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Annual Radiological Environmental Operating Report
	ML19120A280
Person / Time
Site:	Seabrook
Issue date:	04/30/2019
From:	Pelczar J; Framatome, NextEra Energy Seabrook
To:	; Office of Nuclear Reactor Regulation
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ML19120A278	List: ML19120A279; SBK-L-19059, Annual Radiological Environmental Operating Report;
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2018 Annual Radiological Environmental Operating Report

April 2019

SEABROOK STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT For the Period January -December 2018 Docket No. 50-443 Prepared By: NextEra Energy Seabrook, LLC Chemistry Department Seabrook Station And Framatome Inc. Fluence and Radiological Analysis Group Lynchburg, VA 24506 Date: ReviewedBy: Date: Andreas Giotas, NextEra Energy Seabrook, LLC Approved By: Jl.,,,-,p Q Date: David Robinson, NextEra Energy Seabrook, LLC -i-

SEABROOK STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT For the Period January - December 2018 April 2019

Docket No. 50

-443

Prepared By:

NextEra Energy Seabrook, LLC Chemistry Department Seabrook Station And Framatome Inc.

ii

TABLE OF CONTENTS EXECUTIVE

SUMMARY

............................................................................................................................................................

IV LIST OF TABLES

........................................................................................................................................................................ VII LIST OF FIGURES

.................................................................................................................................................................... VIII

1.0 INTRODUCTION

.................................................................................................................................................................. 1 2.0 PLANT OPERATIONS ENVIRONMENTAL MONITORING PROGRAM .................................................................. 2 3.0

SUMMARY

OF PLANT OPERATIONS RADIOLOGICAL ENVIRONMENTAL MONITORING DATA ............

13 3.1 AIR PARTICULATE

...............................................................................................................................................................

14 3.2 CHARCOAL FILTERS .............................................................................................................................................................

23 3.3 M ILK ....................................................................................................................................................................................

26 3.4 SURFACE WATER ................................................................................................................................................................

. 32 3.5 GROUND WATER ................................................................................................................................................................

. 36 3.6 SEDIMENT ............................................................................................................................................................................

42 3.7 FISH .....................................................................................................................................................................................

46 3.8 LOBSTERS ............................................................................................................................................................................

50 3.9 SHELLFISH ...........................................................................................................................................................................

54 3.10 IRISH M OSS ..........................................................................................................................................................................

59 3.11 F OOD CROP ..........................................................................................................................................................................

63 3.12 VEGETATION........................................................................................................................................................................ 66 3.13 DIRECT RADIATION .............................................................................................................................................................

69 4.0 DRY FUEL STORAGE REMP & DATA

SUMMARY

.................................................................................................... 95 4.1 DIRECT RADIATION FROM DFS............................................................................................................................................

95 5.0 PROGRAM DEVIATIONS AND REPORTING ............................................................................................................

10 8 5.1 SAMPLING PROGRAM DEVIATIONS .................................................................................................................................... 108 5.2 COMPARISON OF ACHIEVED LLDS WITH REQUIREMENTS

................................................................................................

. 108 5.3 COMPARISON OF RESULTS AGAINST REPORTING LEVELS .................................................................................................. 108 6.0 QUALITY ASSURANCE PROGRAM ............................................................................................................................

111 6.1 GEL LABORATORIES QA ...................................................................................................................................................

111 6.2 ENVIRONMENTAL TLD QA ...............................................................................................................................................

143 7.0 LAND USE CENSUS

.........................................................................................................................................................

146 ATTACHMENT 1: SAMPLE ANALYSIS DATA LIST FOR 2018 .......................................................................................

148 iii Executi ve Summary Both the plant operations and Dry Fuel Storage Radiological Environmental Monitoring Program s (REMP) for Seabrook Station operated successfully for the period of January through December 2018. This report describes the REMP and its implementation as required by Technical Specifications and as defined in the Offsite Dose Calculation Manual (ODCM). It also contains analytical results, data evaluation, dose assessment (as needed), and data trends for each environmental sample medium. Also included are the results of the Land Use Census, historical data, and the environmental laboratory performance in the Quality Assurance Inter

-comparison Program required by the ODCM.

Radioactivity le vels in the vicinity of Seabrook Station from January 1 through December 31, 2018 in air, water, sediment, milk, fish, food crops, and vegetation, as well as direct radiation measurement s ha ve been analyzed, evaluated, and summarized. The results of the REMP are intended to supplement the results of the radiological effluent monitoring by verifying that any measurable concentration of radioacti ve materials and le vels of radiation are not higher than expected on the basis of the effluent measurement and modeling of the environmental exposure pathways.

Radiation and radioactivity in the environment is monitored within a 10

-mile radius of the site. Two types of samples are taken. The first type, control samples, is collected from areas that are beyond measurable influence of Seabrook Station. These samples are used as reference data. Normal background radiation le vels, or radiation present due to causes other than Seabrook Station, can thus be compared to the environment surrounding the nuclear power station. Indicator samples are the second sample type obtained.

These samples show how much measureable radiation or radioactivity (if any) is contributed to the environment by the site. Indicator samples are taken from areas close to the station where any plant contribution will be at the highest potential concentration. The ODCM minimum required plant operations REMP included the collection for 2018 of at least 576 samples, with a total of 2416 individual measurement analyses. In 2018 , the total number of sample analysis sets (both required and non-required) equaled 847 taken from 98 locations around Seabrook Station. These were collected from aquatic, atmospheric, and terrestrial environments. An estimated 5086 individual measurement analyses were performed on these samples. The plant operations radiological environmental monitoring program is outlined in Table 2.

0-1. Radiation environmental monitoring associated with Dry Fuel Storage (DFS) in 2018 included an additional 20 TLD direct radiation measurements beyond those listed as being part of the REMP. The DFS environmental monitoring program is shown on Table 4.0-1.

Prior to station operation, samples were collected and analyzed to determine the amount of radioactivity present in the area. The resulting values are used as a "pre

-operational baseline." Current analysis results from the indicator samples are compared to both current control sample values and the pre

-operational baseline to determine if changes in radioactivity le vels are attributable to station operations.

A report is required to be submitted to the Nuclear Regulatory Commission when the le vel of radioactivity as a result of plant operations in an environmental sampling medium at a specified location exceeds the reporting level limits specified in the ODCM when a veraged o ver any calendar quarter. Also, when more than one of the radionuclides is detected in the sampling medium, this report shall be submitted if:

Concentration (1)

+ Concentration (2)

+ ... Limit Le vel (1) Limit Le vel (2)

Based on the analytical results of environmental samples during 2018, Seabrook Station reporting le vels were not exceeded.

All off-site radioactivity detected was attributable to either naturally-occurring radionuclides, previous nuclear weapons tests

, the Fukushima Daiichi nuclear accident in Japan on March 11, 2011, or other man-made sources.

In 2018, the maximum whole body dose to the hypothetically exposed individual due to Seabrook Station effluents and operations wa s estimated to be 0.0 823 mrem. This whole body dose is the sum of all the exposure pathways for liquid and gaseous effluents, plus the direct whole body dose from station sources. This total represents approximate ly 0.33% of the whole body dose limits for a member of the public as set forth in 40CFR190.

iv The average effective dose per individual in the U.S. population from ubiquitous or background radiation sources is about 3.11 mSv/

yr (311 mrem/

yr), with another 3.00 mSv/yr (300 mrem/yr) resulting from medical procedures and imaging (NCRP Report No.

160, "Ionizing Radiation Exposure of the Population of the United States" (2009)). The estimate for natural background includes radon gas which has always been present but has not always been included in previous estimates. In some regions of the country, the amount of natural radiation is significantly higher. Residents of Colorado, for example, recei ve an additional 60 mrem/

yr due to the increase in cosmic and terrestrial radiation le vels. In fact, for e very 100 feet abo ve sea le vel, a person will recei ve an additional 1 mrem/

yr from cosmic radiation. In se veral regions of the world, naturally high concentrations of uranium and radium deposits result in doses of se veral thousand mrem/

yr to their residents (CRC Handbook. "Radioecology: Nuclear Energy and the Environment" , F. Ward Whicker and Vincent Schultz, Volume I, 1982).

Analytical results are divided into four categories based on exposure pathways: Airborne, direct radiation, ingestion, and waterborne. Each of these pathways is described below:

The airborne exposure pathway includes airborne iodine and airborne particulate. The 2018 results were similar to previous years, excluding the Fukushima Daiichi event in 2011. There was no notable increase in natural products and no detectable fission products or other plant-related radionuclides in the airborne particulate media during the year.

The direct exposure pathway measures environmental radiation exposures by use of thermoluminescent dosimeters (TLDs). TLD results ha ve indicated a trend that compare s with previous years which reflect the natural variability of background radiation from one location to another. The exposure rate response at some individual monitoring stations has exhibited step changes at some point in the past that appear to be related to changes in local conditions in the area of the dosimeter measurement. These step observations have been noted at various locations (both control and indicator stations) with no correlation with distance from Seabrook Station, leading to the conclusion that the changes in local TLD responses are not related to Seabrook operations. As a result, n o detectable radiation contribution from Seabrook Station sources was identified via TLD environmental measurements off

-site during the course of 2018 from either plant operations or from the spent fuel in the Dry Fuel Storage Facility. The ingestion exposure pathway includes milk, fish , shellfish, terrestrial food products and leafy vegetation samples. The gamma spectroscopy analyses indicated the most prominent positi ve results were for potassium

-40 (K-40) at a ve rage environmental le vels. Other naturally-occurring radionuclides were also periodically detected. However, past world

-wide nuclear events such as atmospheric testing of nuclear weapons and the Fukushima Daiichi nuclear accident did result in detectable fallout of fission related radioactivity (Cs

-137) in milk and leafy vegetation. Neither fish or shellfish nor terrestrial food products (strawberries and tomatoes) had any detectable fission product related radioactivity. No radionuclides related to plant effluents were detected in any of these sample media during 2018. For the one fission product (Cs

-137) detected in milk and leafy vegetation, the concentration falls within the range of past and pre

-operational measurements and can be attributed to past weapons testing fallout.

The waterborne exposure pathway includes surface (ocean) water, drinking water supply, shallow well water, sea algae (Irish Moss) and sediment. Water samples were analyzed for tritium, gross

-beta and gamma-emitting radionuclides. Irish Moss was analyzed for gamma

-emitting radionuclides.

Tritium was not identified in the water samples analyzed. For groundwater, the gross beta activity detected at all locations is similar to what was detected in the pre

-operational program and is consistent with results from previous years of commercial operations. Gamma analysis of samples indicated no plant

-related gamma

-emitting radionuclides abo ve detection limits

. The results of the 2018 REMP continue to clearly demonstrate that there is no significant short term or chronic long

-term radiological impact on the environment in the vicinity of Seabrook Station from plant operations and that there is no detectable impact to members of the public associated with the DFS facility. The REMP monitoring did detect local area fall out related to past global nuclear events, such as atmospheric weapons testing and the Japanese nuclear accident in March 2011, thereby demonstrating the sensitivity and capability of the REMP to detect low level radiological changes in the environment and the likely source. The v

REMP confirmed that plant effluents in 2018 did not contribute measurable radiation exposure to the general public. This finding is consistent with previous years' monitoring conclusions. As a result, no increasing or changing trends in plant related radiological impacts on the environment are found. vi LIST OF TABLES Number Title Page 2.0-1 Plant Operations Radiological Environmental Monitoring Program...

..............................

. 3 2.0-2 Plant Operations Radiological Environmental Monitoring Locations

...............................

4 3.1-1 REMP Summary (Medium: Air Particulates)------------------.

.. 21 3.2-1 REMP Summary (Medium: Charcoal Cartridge) ----------------.

. 24 3.3-1 REMP Summary (Medium: Milk) -----------------------

.. 30 3.4-1 REMP Summary (Medium: Sea Water) -------------------- .. 33 3.5-1 REMP Summary (Medium: Ground Water) ------------------.

.. 39 3.6-1 REMP Summary (Medium: Sediment) --------------------.

... 43 3.7-1 REMP Summary (Medium:

Fish) -----------------------

. 47 3.8-1 REMP Summary (Medium: American Lobster) -----------------

. 51 3.9-1 REMP Summary (Medium: Mussel Body) ------------------.

.... 55 3.9-2 REMP Summary (Medium: Mussel Shell) -------------------.

. 5 8 3.10-1 REMP Summary (Medium: Irish Moss) --------------------

. . 60 3.11-1 REMP Summary (Medium: Food Crop) -------------------.

.... 64 3.12-1 REMP Summary (Medium: Vegetation) --------------------

.. 67 3.13-1 Environmental TLD Measurements

..................................................................................

71 3.13-2 Pre-Operational Environmental TLD Measurements --------------.

.. 73 3.13-3 Facility Related Dose using ANSI/HPS N13.37-2014 Methodology

. . 7 4 4.0-1 Dry Fuel Storage (DFS) TLD Monitoring Locations---------------..

. 98 4.1-1 DFS Environmental TLD Measurements (20 18)---------------

- .... 99 4.1-2 DFS Facility Related Dose using ANSI/HPS N13.37

-2014 Methodology

........ 100 5.2-1 Detection Capabilities for Environmental Sample Analysis... ..........................................

1 09 5.3-1 Reporting Le vels for Radioactivity Concentrations in Environmental Samples

...............

110 6.1-1 20 18 Inter-Lab Radiological Proficiency Testing Results and Acceptance Criteri a ......... 1 17 6.1-2 20 18 Eckert & Ziegler Analytics Performance Evaluation Results

.................................. 128 6.1-3 REMP Intra

-Laboratory Data Summary: Bias & Precision by Matrix -----. .... ...... 13 1 6.1-4 All Radiological Intra

-Lab Data Summary: Bias and Precision Matrix --------.

1 33 6.1-5 20 18 Corrective Action Report Summary -----------------

..........

1 4 1 6.2-1 Percentage of Individual Dosimeters That Passed EDC Internal Criteria ----

--. 143 6.2-2 Mean Dosimeter Analyses (N=6) ------------------------

1 44 6.2-3 Summary of Independent Dosimeter Blind Spike Testing ...------------

144 6.2-4 Summary of Independent Blind Duplicate Dosimeter Testing -----------

. 1 45 7.0-1 20 18 Land Use Census Results

--. 147 vii LIST OF FIGURES Number Title Page Figure 2.1 Radiological Environmental Monitoring Locations within 4 Km of Seabrook Station------

-.------- 7 Figure 2.2 Radiological Environmental Monitoring Locations Between 4 & 12 Km of Seabrook Station-----

--..--- 8 Figure 2.3 Radiological Environmental Monitoring Locations Outside 12 Km of Seabrook Station-------

.. 9 Figure 2.4 Direct Radiation Monitoring Locations Within 4 Km of Seabrook Station----------------.........--- 10 Figure 2.5 Direct Radiation Monitoring Locations Between 4 & 12 Km of Seabrook Station------------------

-.--- 11 Figure 2.6 Direction Radiation Monitoring Locations Outside 12 Km of Seabrook Station---------------

12 Figure 3.1 Gross-Beta Measurements of Air Particulate Filters--------

--. 16 Figure 3.1.1 Gross-Beta Measurements of Air Particulate Filters Quarterly A verages----------------------

--. 17 Figure 3.1.2 Gross-Beta Measurements of Air Particulate Filters Quarterly A verages----------------------

--. 18 Figure 3.1.3 Gross-Beta Measurements of Air Particulate Filters Quarterly A verages----------------------

--. 19 Figure 3.1.4 Gross-Beta on Air Particulate Filters Quarterly A verages------

-- 20 Figure 3.2 I-131 Measurements of Air Charcoal Cartridges -----------.

25 Figure 3.3 Cesium-137 in Milk----------------------

-- 27 Figure 3.3.1 Cesium-137 in Milk Annual A verage Concentrations--------

-. 28 Figure 3.3.2 Cesium-137 in Milk Annual A verage Concentrations------...--.. 2 9 Figure 3.5 Gross-Beta Measurements of Ground Water-----------

-- 3 7 Figure 3.5.1 Gross-Beta Measurements of Ground Water Semi-Annual A verages-------------------...-

--.. 3 8 Figure 3.6 Environmental Radiation Measurements (Using TLDs)------...

.......... 77 Figure 3.6.1 Environmental Radiation Measurements (Using TLDs)----.-..-

--- 78 Figure 3.7 Environmental Radiation Measurements (Using TLDs)---------. . 79 Figure 3.7.1 Environmental Radiation Measurements (Using TLDs)-----...-

--. . 80 Figure 3.8 Environmental Radiation Measurements (Using TLDs)-----.----.. 81 Figure 3.8.1 Environmental Radiation Measurements (Using TLDs)------...

...........

82 Figure 3.9 Environmental Radiation Measurements (Using TLDs)---------- 83 Figure 3.9.1 Environmental Radiation Measurements (Using TLDs)---------- 84 Figure 3.10 Environmental Radiation Measurements (Using TLDs)---------- 85 Figure 3.10.1 Environmental Radiation Measurements (Using TLDs)---------- 86 viii LIST OF FIGURES (Continued)

Figure 3.11 Environmental Radiation Measurements (Using TLDs)--------..- 87 Figure 3.11.1 Environmental Radiation Measurements (Using TLDs)--------..- 88 Figure 3.12 Environmental Radiation Measurements (Using TLDs)-------..-- 89 Figure 3.12.1 Environmental Radiation Measurements (Using TLDs)-------..-- 90 Figure 3.13 Environmental Radiation Measurements (Using TLDs)-------..-- 91 Figure 3.13.1 Environmental Radiation Measurements (Using TLDs)------..--- 92 Figure 3.14 Environmental Radiation Measurements (Using TLDs)--------..- 93 Figure 3.14.1 Environmental Radiation Measurements (Using TLDs)-------..-- 94 Figure 4.0.1 Dry Fuel Storage TLD Environmental Monitoring Locations --

.---..-. 97 Figure 4.1 DFS Control Radiation Measurements (Using TLDs)--------

.--.. 102 Figure 4.2 DFS Environmental Radiation Measurements (Using TLDs)------.- 103 Figure 4.3 DFS Environmental Radiation Measurements (Using TLDs)------- 104 Figure 4.4 DFS Environmental Radiation Measurements (Using TLDs)------- 105 Figure 4.5 DFS Environmental Radiation M easurements (Using TLDs)------- 106 Figure 4.6 DFS Environmental Radiation Measurements (Using TLDs)------- 107 ix ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 1.0 Introduction NextEra Energy Seabrook, LLC's Radiological Environmental Monitoring Program (REMP) consist s of two interconnected sample collection and measurement schedules that look for environmental influences from: (1) plant operations which release to the environment radioactive materials in liquid and gaseous effluents, and direct radiation from plant facilities inside the power block Protected Area, and (2) direct radiation from used fuel placed in the Dry Fuel Storage (DFS) facility located in the West Southwest sector approximately 0.38 miles from the Containment Building. Several monitoring locations provide data that are shared or used in the assessment of both plant and DFS operations

. The plant operations REMP at Seabrook Station has been designed and carried out to achie ve the following specific objecti ve s: To provide an indication of the appearance or accumulation of any radioacti ve material in the environment caused by the operation of the nuclear power station.

To provide assurance to regulatory agencies and the public that the station's environmental impact is known and within anticipated limits.

To verify the adequacy and proper functioning of station effluent controls and monitoring systems.

To provide standby monitoring capability for rapid assessment of risk to the general public in the e vent of unanticipated or accidental releases of radioacti ve material. In July 2008, the plant operations REMP was supplemented with the DFS environmental monitoring for direct radiation when used nuclear fuel assemblies were for the first time transferred to the on-site DFS facility located WSW of the power block.

NextEra Energy Seabrook, LLC staff collected the terrestrial samples. Normandeau Associates, Inc. collected the marine and sediment samples. After initial sample preparation for shipment, the samples were sent to GEL Laboratories, Inc. of Charleston, SC , for analysis.

The Environmental Dosimetry Company , located in Sterling, MA , processed the environmental TLD s for the entire year

. This report is a summary of the findings of the REMP for 2018. It is being provided in compliance with Part A of Seabrook Station

's ODCM and Technical Specification 6.8.1.3.

2.0 Plant Operations Environmental Monitoring Program

Table 2.0-1 outlines the plant operations monitoring program as specified in the Seabrook Station ODCM, Part B, Section 4. Table 2.

0-2 lists the operational sampling stations and their specific locations (distances are measured from the center of the Unit 1 Containment Building). The sampling locations are shown on maps in Figures 2.1 through 2.6. The sampling and analysis program as described a bo ve fulfills the minimum requirements for environmental sample collection and analysis as contained in ODCM Table A.9.1

-1, and includes additional sampling of various pathways and locations beyond the minimum requirements.

Below are listed the two

-letter media codes and what they represent:

AP Air Particulate CF Charcoal Filter TM Milk WG Ground Water WS Surface (Sea) Water SE Sediment FH Fish HA Lobsters MU Mussels (Shellfish

- edible portion only)

MS Mussels (Shellfish

- shell portion only)

TL Direct Radiation (TLD)

AL Irish Moss (algae)

TF Food Crop TG V egetation (broad-leaf)

Table 2.0-1 Plant Operations Radiological Environmental Monitoring Program

Media Sampling Frequency Required Analyses Air Particulate (AP)

-Bi-Weekly Gross Beta

-Quarterly Composite Gamma spectroscopy Charcoal Filter (CF)

-Bi-Weekly I-131 Milk (TM)* -Monthly (Semimonthly Gamma spectroscopy when animals I-131 are on pasture)

Surface (Sea) Water (WS)

-Monthly Gamma spectroscopy

-Quarterly Composite H-3 (composite)

Sediment (SE)

-Semiannually Gamma spectroscopy Fish & In vertebrates -Quarterly or Gamma spectroscopy (FH, HA, MU

) -Semiannually Direct Radiation (TL)

-Quarterly Integrated gamma exposure Irish Moss (AL) -Semiannually Gamma spectroscopy

Ground Water (WG) -Quarterly Gamma spectroscopy Gross Beta H-3 Food Crops (TF) -Monthly/Growing Season Gamma spectroscopy V egetation (TG) -Monthly/Growing Season Gamma spectroscopy I-131

Note that broad leaf vegetation is substituted for milk due to insufficient number of required milk sampling locations in the site area.

Table 2.0-2 Plant Operations Radiological Environmental Monitoring Locations (a) (b) 2018 Approx. Distance From Direction Station Code Station Plant From (Media - Sta. No.) Description Zone (km) Plant AP/CF-01+ PSNH Barge Landing Area 1

2.6 ESE AP/CF-02+ Hampton Marina (Harbor Rd) 1 2.5 E AP/CF-03+ Southwest Boundary (Rock Pile) 1 1.0 SW AP/CF-04+ West Boundary (Plate Yard) 1 1.2 W AP/CF-05 Winnacunnet High School 1 4.0 NNE AP/CF-07+ PSNH Substation 1 5.7 NNW AP/CF-08 E&H Substation 1 3.4 SSE AP/CF-09+ Georgetown Electric Light Co.

2 21.4 SSW TM-15 Hampton Falls, NH 1 6.9 NW WG-01 Seabrook Town Wells 1 5.6 W WG-13 Seabrook Station Well No.13 1 1.0 N WG-14 Brimmer's Lane 1 1.3 NNW WS-01+ Hampt on-Discharge Area 1 5.1 E WS-51+ Ipswich Bay 2 26.2 SSE WS-10

Seabrook Marsh 1 0.1 8 SSE SE-02 Hampton-Discharge Area 1 5.2 E SE-07 Hampton Beach 1 3.3 E SE-0 8+ Seabrook Beach 1 3.3 ESE SE-52 Ipswich Bay 2 26.2 SSE SE-57 Plum Island Beach 2 22.4 SSE FH-03+ Hampt on-Discharge Area 1 5.0 ESE FH-53+ Ipswich Bay 2 23.3 SSE FH-06 Hampton-Discharge Area 1 5.2 E HA-04+ Hampt on-Discharge Area 1 5.1 E HA-54+ Ipswich Bay 2 27.9 SSE MU-06+ Hampton-Discharge Area 1 5.2 E MU-09 Hampton Harbor 1 2.5 E MU-56+ Ipswich Bay 2 28.6 SSE M U-59 Plum Island 2 22.0 SSE MS-06 Hampton-Discharge Area 1 5.2 E MS-56 Ipswich Bay 2 28.6 SSE AL-05 Hampton-Discharge Area 1 5.2 E AL-55 Ipswich Bay 2 28.7 SSE TF-02 Hampton Falls, NH 1 5.0 WNW TF-03 Salisbury, MA 1 5.1 SW TF-06 Ipswich, MA 2 26.0 S Table 2.0-2 (Cont'd) Plant Operations Radiological Environmental Monitoring Locations (a) (b) 2018 Approx. Distance From Direction Station Code Station Plant From (Media - Sta. No.) Description Zone (km) Plant TG-08+ North Access Rd, Site Boundary 1 1.05 W TG-09+ General Office Bld. Site Boundary 1 0.97 SW TG-10+ Georgetown Electric Light Co.

2 21.4 SSW TL-0 1+ Brimmer's Lane, Hampton Falls I 0.97 N TL-0 2+ Landing Road, Hampton I 3.0 NNE TL-0 3+ Glade Path, Hampton Beach I 2.9 NE TL-0 4+ Island Path, Hampton Beach I 2.3 ENE TL-0 5+ Harbor Road, Hampton Beach I 2.5 E TL-0 6+ PSNH Barge Landing Area I 2.7 ESE TL-0 7+ Cross Road, Seabrook Beach I 2.6 SE TL-0 8+ Farm Lane, Seabrook I 1.3 SSE TL-0 9+ Farm Lane, Seabrook I 1.3 S TL-10+ Site Boundary Fence I 1.1 SSW TL-11+ Site Boundary Fence I 1.0 SW TL-12+ Site Boundary Fence I 1.2 WSW TL-13+ Inside Site Boundary I 1.2 W TL-14+ Trailer Park, Seabrook I 1.3 WNW TL-1 5+ Brimmer's Lane, I 1.4 NW Hampton Falls TL-16+ Brimmer's Lane I 1.2 NNW Hampton Falls TL-17+ South Road, North Hampton 0 7.8 N TL-18+ Mill Road, North Hampton 0 7.6 NNE TL-19+ Appledore A venue, 0 7.7 NE North Hampton TL-20+ Ashworth A ve nue, 0 3.2 ENE Hampton Beach TL-21+ Route 1A, Seabrook Beach 0 3.7 SE TL-22+ Cable A venue, Salisbury 0 7.6 SSE Beach TL-23+ Ferry Road, Salisbury 0 8.1 S TL-24+ Ferry Lots Lane, 0 7.2 SSW Salisbury TL-25+ Elm Street, Amesbury 0 7.6 SW TL-26+ Route 107A, Amesbury 0 8.1 WSW TL-27+ Highland St. S. Hampton 0 7.5 W TL-28+ Rte. 150, Kensington 0 7.5 WNW TL-29+ Frying Pan Ln., Hampton Falls 0 7.2 NW TL-30+ Route 27, Hampton 0 7.6 NNW Table 2.0-2 (Cont'd) Plant Operations Radiological Environmental Monitoring Locations (a) (b) 2018 Approx. Distance From Direction Station Code Station Plant From (Media - Sta. No.) Description Zone (km) Plant TL-31+ Alumni Dri ve, Hampton S 3.8 NNE TL-32+ Seabrook Elementary School S 2.0 S TL-33+ Dock Area, Newburyport S 9.8 S TL-34+ Bow Street, Exeter S 12.0 NW TL-35+ Lincoln Ackerman School S 2.3 NNW TL-36+ Route 97, Georgetown 2 22.6 SSW TL-37+ Post Office Plaistow, NH 2 21.5 WSW TL-38+ Emerson St. Hampstead, NH 2 27.7 W TL-39+ Fremont, NH 2 27.0 WNW TL-40+ Newmarket, NH 2 21.6 NNW TL-41 Portsmouth, NH 2 21.0 NNE TL-42 Ipswich, MA 2 22.8 SSE TL-44 Education (Science & Nature) Center S 0.6 SW TL-45 Hampton Fire Station S 4.4 NE TL-46 Seabrook Beach (near Police Station)

S 2.8 ESE TL-47 Hampton Falls, NH S 4.1 WNW ___________________________

Zone indices are: 1 = Indicator Stations; 2 = Control Stations; 0 = Outer Ring TLD; I = Inner Ring TLD; S = Special Interest TLD

+ = Sample Locations required by the Off

-Site Dose Calculation Manual (ODCM)

Note that WS

-10 is the same location as WS

-02 reported in previous annual reports.

(a) Dry Fuel Storage (DFS) locations are listed on Table 4

.0-1.

(b) Table reflects those locations included in the 201 8 sample collection program.

Figure 2.1 Radiological Environmental Monitoring Locations Within 4 Km of Seabrook Station

Figure 2.2 Radiological Environmental Monitoring Locations Between 4 & 12 Km of Seabrook Station

Figure 2.3 Radiological Environmental Monitoring Locations Outside 12 Km of Seabrook Station

Figure 2.4 Direct Radiation Monitoring Locations Within 4 Km of Seabrook Station

Figure 2.5 Direct Radiation Monitoring Locations Between 4 & 12 Km of Seabrook Station

Figure 2.6 Direct Radiation Monitoring Locations Outside 12 Km of Seabrook Station

3.0 Summary of Plant Operations Radiological Environmental Monitoring Data The following pages summarize the analytical results of the plant operations environmental samples collected in 2018. Each environmental media category is presented as a separate subsection. A table that summarizes the data follows a discussion of the sampling requirements and results for each media type. Listed at the top of each table are the units of measurement for each medium. The left

-hand column contains the radionuclide which is being reported, total number of analyses of that radionuclide, and the number of measurements that exceed the required reporting le vel as documented in Table A.9.1

-3 of the ODCM. The latter are classified as "non

-routine" measurements. The next column lists the Lower Limit of Detection (LLD) for those radionuclides that ha ve detection capability requirements specified in the ODCM.

Those sampling stations which are adjacent to the plant and which could conceivably be affected by the operation of Seabrook Station are called "Indicator" or "Zone 1" stations. Distant stations, which are beyond potential plant influences, are called "Control" or "Zone 2" stations.

A set of statistical parameters is calculated for each radionuclide. This set of statistical parameters includes separate analyses for: (1) the indicator stations; (2) the station having the highest annual mean concentration for that radionuclide; and (3) control stations. For each of the three groups of data, these parameters are as follows:

The mean value of all concentrations

, The range of values and The number of positi ve measurements (a concentration which is greater than the MDC for the measurement) divided by t he total number of measurements

.

Each radioactivity measurement datum in this report is based on a single measurement and is reported as a concentration plus or minus a one standard deviation uncertainty. The quoted uncertainty term represents only the random uncertainty associated with the radioacti ve decay process (counting statistics), and not the propagation of all possible uncertainties in the analytical procedure.

contains the data for the samples collected in 2018. The results are organized as follows: (1) by sample type; (2) within each sample type the data are alphabetical by nuclide; and (3) within each radionuclide listing the data are chronologically arranged by end date (date of sample collection).

The radionuclide value concentrations ha ve been corrected for radioacti ve decay. For composite samples, such as air particulates and airborne iodine, the GEL laboratory uses the mid

-point of the collection period as the reference for decay correction until time of analysis

.

3.1 Air Particulate

Air monitoring stations were established at a total of eight locations, six locations required by the ODCM, Table A.9.1

-1, and two additional sites included to supplement the program. Se ven of the locations are indicators, while the remaining one is a control station located more than 21 km away from the plant. Airborne particulate s (AP) are collected by passing the air through a glass

-fiber filter. In 2018, these filters were typically collected bi-weekly and held for a period (typically 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> or more) before being analyzed for gross

-beta activity (indicated as BETA in T able 3.1-1) to allow for the decay of R adon and Thoron daughter products. Continuous automated and real

-time remote monitoring of vital air sampling system parameters is performed with telemetry that detects power outage s, pump failure s, filter degradation, tubing failures and excessi ve filter loading. The telemetry communicates by cellular transmission to a web ser ver that communicates to a shift technician's pager when set

-point thresholds are reached, providing 24/7 alert notification.

This capability provides for timely identification of problems and correcti ve actions that reduce the potential loss of air sampling. If periods of high dust loading during the collection period cause a higher than normal differential pressure drop across the collection filters, the collection period may be reduced to wee kly cycles to reduce the dust loading. There were no recorded collection cycle reductions due to dust loading in 2018. For the year, 215 particulate filters were collected and analyzed for gross beta activity

.

The 2018 gross beta activity analyses for the indicator locations were found to be statistically equivalent to that seen at the control station (positive activity for all samples). The gross beta results are also similar to what was seen in the pre

-operational program and for the last twenty

-nine years of commercial operation, with the exception of the Fukushima Daiichi related spike in 2011. All filter samples from all stations showed similar trends lines (see Figure 3.1) over the course of the year and from previous years (see Figures 3.1.1, 3.1.2, and 3.1.3).

Figure 3.1.4 compares the quarterly average gross beta response of all indicator air sampling stations to the control location over the last 2 4 years, and shows no significant difference in the two data sets. It is also noted that no plant

-related radionuclides (by gamma spectroscopy) were identified in any of the quarterly filter composite samples for 2018. The overall fluctuations at all stations seen in the gross beta activity throughout the year can be attributed to changes in environmental conditions unrelated to plant operations. Natural environmental processes such as wind direction, precipitation, snow cover, and soil temperature and moisture affect concentrations of naturally-occurring radionuclides in the atmosphere directly above land.

Gamma isotopic analyses of particulate filters are summarized on Table 3.1-1. The only radionuclide s detected were naturally-occurring Be-7 , which indicated positive in all air particulate samples and naturally-occurring K-40, which was detected in two samples

. Be-7 is of cosmogenic origin, and its presenc e is consistent with previous years in both the pre-operational and operational periods.

Near the end of 2010, analysis of environmental samples was changed from the AREVA Environmental Laboratory to GEL Laboratory after the AREVA lab discontinued operations. In comparing long term trends in gross beta activity, t he results since 2011 appear to reflect a step increase at the time of the transition between labs. The reason for the step increase is related to the change in the gross beta counting equipment configurations and reference calibration standards used by the AREVA lab and GEL. Both labs use(d) gas proportional counting of the fi lter element. However, AREVA applied a Cs

-137 calibration source while the GEL lab uses a Tc-99 calibration source. In the case of the AREVA data record, the Cs

-137 detection efficiency (typically 34%)

was applied to the "gross" counts to determine the apparent activity. This inherently presumes that the radioactivity in a field sample is all Cs-137. In the case of the GEL data record, the Tc

-99 efficiency (20.6%) is applied to the same "gross" counts as if all the radioactivity in this case is Tc

-99. The end result is two different gross beta radioactivity determinations for the same level of environmental activity. In application, this is not an adverse condition in that the gross beta counting is used as a qualitative indicator of changes in environmental conditions, not as a quantitative measure of the actual radioactivity. Since the comparison of the response curves for each monitoring station, including the control station, are similar over time, the curves indicate that there is no detectable influence from a single nearby point source such as Seabrook Station.

The air particulate sampling program demonstrated no off

-site dose to the public or impact to the environment from this pathway as the result of plant operations. This is consistent with previous years and the pre

-operational program. The REMP Summary Table 3.1

-1 list s the range of analysis results by radionuclide for Indicator and Control Stations for the air particulate environmental media. Attachment 1 to this report list s the individual analysis results for each measurement of air particulates under the Sample Type code AP

.

Air particulate sample collection and analysis deviations from the ODCM required program (if any) ar e described in Section

5.

0.000.010.020.030.040.050.060.070.080.090.100.110.120.000.010.020.030.040.050.060.070.080.090.100.110.12JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecemberpCi/cubic meter 2018AP-01 Barge Landing AreaAP-02 Hampton MarinaAP-03 SW BoundaryAP-04 W BoundaryAP-05 Winnacunnet High SchoolAP-09 Georgetown (Control)AP-07 PSNH Substation, HamptonAP-08 Exeter & Hampton Electric Co.FIGURE 3.1GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERSSEABROOK STATION

00.020.040.060.080.10.120.140.1619861988199019921994199619982000200220042006200820102012201420162018pCi/cubic meterFIGURE 3.1.1 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS QUARTERLY AVERAGES SEABROOK STATIONAP-01 Barge Landing AreaAP-02 Hampton MarinaAP-03 SW BoundaryAP-06/09 Georgetown Substation (Control)5% CriticalityJune, 1989Chernobyl May, 19865% CriticalityJune, 1989Full Power May, 1990Fukushima-Daichii EventMarch 2011

00.020.040.060.080.10.120.140.1619861988199019921994199619982000200220042006200820102012201420162018pCi/cubic meterFIGURE 3.1.2 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS QUARTERLY AVERAGES SEABROOK STATIONAP-04 W BoundaryAP-05 Winnacunnet High SchoolAP-06/09 Georgetown Substation (Control)Chernobyl May, 19865% CriticalityJune, 1989Full Power May, 1990Fukushima-Daichii EventMarch 2011

00.020.040.060.080.10.120.140.1619861988199019921994199619982000200220042006200820102012201420162018pCi/cubic meterFIGURE 3.1.3 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS QUARTERLY AVERAGES SEABROOK STATIONAP-06/09 Georgetown Substation (Control)AP-07 PSNH Substation, HamptonAP-08 Exeter & Hampton Electric Co.Chernobyl May, 19865% CriticalityJune, 1989Full Power May, 1990Fukushima-Daichii EventMarch 2011

00.020.040.060.08 00.020.040.060.081994199619982000200220042006200820102012201420162018pCi/cubic meterFIGURE 3.1.4 GROSS-BETA ON AIR PARTICULATE FILTERS QUARTERLY AVERAGES SEABROOK STATIONIndicatorsControlFukushima-DaichiiEventMarch 2011

Table 3.1-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Air Particulates (AP) UNITS: pCi/cubic meter Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

BETA (215) 0.01 2.2E -2 09 2.3E -2 2.3E -2 (0) ( 8.8 - 43.6)E -3 ( 1.4 - 4.1)E -2 ( 1.4 - 4.1)E -2 (188/ 188)

(27/ 27) (27/ 27) Be-7 (32) 1.0E -1 01 1.1E -1 9.9E -2 (0) ( 5.9 - 14.6)E -2 ( 7.2 - 14.4)E -2 ( 6.2 - 12.0)E -2 (28/ 28) (4/ 4) (4/ 4) K-40 (32) 2.1E -3 05 2.8E -3 1.5E -3 (0) ( -2.0 - 9.1)E -3 ( 1.7 - 3.8)E -3 ( 0.0 - 3.3)E -3 (2/ 28) (0/ 4) (0/ 4) Cr-51 (32) -1.2E -3 09 6.4E -3 6.4E -3 (0) ( -1.8 - 2.5)E -2 ( -5.9 - 24.8)E -3 ( -5.9 - 24.8)E -3 (0/ 28) (0/ 4) (0/ 4) Mn-54 (32) 2.2E -5 05 9.4E -5 -5.4E -5 (0) ( -3.1 - 3.9)E -4 ( -5.1 - 23.7)E -5 ( -3.0 - 1.9)E -4 (0/ 28) (0/ 4) (0/ 4) Co-57 (32) 1.9E -5 02 4.7E -5 1.2E -5 (0) ( -1.9 - 1.6)E -4 ( -7.0 - 12.2)E -5 ( -6.7 - 8.5)E -5 (0/ 28) (0/ 4) (0/ 4) Co-58 (32) -5.5E -5 09 1.6E -4 1.6E -4 (0) ( -8.5 - 4.7)E -4 ( -2.8 - 3.8)E -4 ( -2.8 - 3.8)E -4 (0/ 28) (0/ 4) (0/ 4) Fe-59 (32) -2.4E -4 05 5.1E -4 -5.3E -4 (0) ( -4.7 - 1.9)E -3 ( -1.3 - 1.8)E -3 ( -1.6 - 0.1)E -3 (0/ 28) (0/ 4) (0/ 4) Co-60 (32) -2.2E -5 02 1.0E -4 0.0E 0 (0) ( -2.9 - 2.9)E -4 ( -7.6 - 29.3)E -5 ( -1.2 - 1.2)E -4 (0/ 28) (0/ 4) (0/ 4) Zn-65 (32) -7.6E -5 09 1.3E -4 1.3E -4 (0) ( -1.1 - 0.3)E -3 ( -3.6 - 5.6)E -4 ( -3.6 - 5.6)E -4 (0/ 28) (0/ 4) (0/ 4) Se-75 (32) 3.8E -5 08 1.7E -4 8.0E -5 (0) ( -2.6 - 3.9)E -4 ( -1.5 - 3.9)E -4 ( -6.6 - 22.3)E -5 (0/ 28) (0/ 4) (0/ 4) Nb-95 (32) 4.2E -5 01 3.4E -4 -8.0E -5 (0) ( -7.8 - 6.6)E -4 ( -8.9 - 659.0)E -6 ( -4.0 - 4.1)E -4 (0/ 28) (0/ 4) (0/ 4) Zr-95 (32) -3.8E -5 04 2.8E -4 1.8E -4 (0) ( -9.4 - 8.4)E -4 ( -1.1 - 8.4)E -4 ( -2.6 - 8.3)E -4 (0/ 28) (0/ 4) (0/ 4) Ru-103 (32) -3.0E -4 02 3.4E -4 -2.1E -4 (0) ( -1.5 - 0.7)E -3 ( -5.7 - 70.8)E -5 ( -9.5 - 0.5)E -4 (0/ 28) (0/ 4) (0/ 4) Ru-106 (32) 1.3E -5 09 1.0E -3 1.0E -3 (0) ( -2.6 - 2.9)E -3 ( -5.7 - 29.2)E -4 ( -5.7 - 29.2)E -4 (0/ 28) (0/ 4) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.1-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Air Particulates (AP) UNITS: pCi/cubic meter Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ag-108m (32) 0.0E 0 01 5.4E -5 0.0E 0 (0) ( -1.6 - 2.1)E -4 ( 2.5 - 10.1)E -5 ( -3.5 - 0.9)E -5 (0/ 28) (0/ 4) (0/ 4) Ag-110m (32) -6.0E -5 05 2.0E -4 -4.8E -5 (0) ( -5.0 - 4.0)E -4 ( 4.5 - 40.1)E -5 ( -1.8 - 1.3)E -4 (0/ 28) (0/ 4) (0/ 4) Sb-124 (32) -2.3E -4 04 5.5E -4 2.7E -4 (0) ( -3.9 - 1.7)E -3 ( -1.5 - 16.8)E -4 ( -6.1 - 9.4)E -4 (0/ 28) (0/ 4) (0/ 4) Sb-125 (32) 4.8E -5 08 2.0E -4 -4.1E -5 (0) ( -6.0 - 6.5)E -4 ( 4.7 - 41.1)E -5 ( -4.5 - 4.8)E -4 (0/ 28) (0/ 4) (0/ 4) I-131 (32) -2.6E -1 07 9.7E -3 -4.2E -3 (0) ( -2.3 - 0.2)E 0 ( 0.0 - 3.9)E -2 ( -1.7 - 0.0)E -2 (0/ 28) (0/ 4) (0/ 4) Cs-134 (32) 0.05 3.9E -5 09 1.7E -4 1.7E -4 (0) ( -2.8 - 3.6)E -4 ( 6.2 - 33.6)E -5 ( 6.2 - 33.6)E -5 (0/ 28) (0/ 4) (0/ 4) Cs-137 (32) 0.06 1.4E -5 07 1.1E -4 1.0E -4 (0) ( -2.4 - 2.3)E -4 ( 7.2 - 17.5)E -5 ( -4.8 - 19.7)E -5 (0/ 28) (0/ 4) (0/ 4) Ba-140 (32) 7.5E -3 04 9.9E -2 -9.3E -2 (0) ( -3.1 - 2.0)E -1 ( -4.5 - 16.2)E -2 ( -3.1 - 1.4)E -1 (0/ 28) (0/ 4) (0/ 4) La-140 (32) -2.4E -3 03 1.4E -2 -2.1E -2 (0) ( -1.2 - 1.2)E -1 ( -3.7 - 6.3)E -2 ( -5.3 - 1.5)E -2 (0/ 28) (0/ 4) (0/ 4) Ce-141 (32) -6.9E -4 09 8.7E -5 8.7E -5 (0) ( -3.6 - 1.1)E -3 ( -1.3 - 1.7)E -3 ( -1.3 - 1.7)E -3 (0/ 28) (0/ 4) (0/ 4) Ce-144 (32) 1.1E -4 03 5.3E -4 2.9E -4 (0) ( -8.2 - 12.6)E -4 ( 2.1 - 7.7)E -4 ( -8.2 - 18.9)E -4 (0/ 28) (0/ 4) (0/ 4) Ac-228 (32) 2.9E -4 08 1.0E -3 4.4E -4 (0) ( -1.5 - 2.2)E -3 ( 9.3 - 220.0)E -5 ( -6.8 - 80.6)E -5 (0/ 28) (0/ 4) (0/ 4) Th-228 (32) 2.3E -4 05 2.9E -4 2.3E -4 (0) ( -1.1 - 52.1)E -5 ( 2.3 - 3.5)E -4 ( -9.9 - 51.6)E -5 (0/ 28) (0/ 4) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

3.2 Charcoal Filters Charcoal filter (CF) cartridges are placed in series behind the air particulate glass

-fiber filters at each of the air sampling locations. Monitoring stations were established at a total of eight locations. Se ven of these are indicators and one is a control. Charcoal filters from the air sampling stations were collected and analyzed for I-131 activity to a lower limit of detection (LLD) of 0.07 pCi/m 3 or lower. During 2018, a total of 215 charcoal cartridges from eight locations were analyzed. As described for the air particulate samplers (see Section 3.1), the collection cycles for the charcoal filters were biweekly during 2018. Off-normal conditions, such as observed high differential pressure across the associated particulate filter (none detected in 2018) which might be indicative of excessive dust loading, could prompt switching to a temporary weekly cycle (see Section 3.1). No sample analyses indicated a detectable level for I

-131 that was statistically relevant (positive) at any of t he air sampling locations during the year. Figure 3.2 shows the I

-131 measurement response s in 2018 for all air sampling stations. All analyses were below their respective measurement minimum detectable concentrations (MDC). From initial criticality in June 1989 to the Fukushima Daiichi accident in March 2011, t he Seabrook REMP program had not detected I-131 at any offsite air sample location

s. Following the March

- April, 2011 air concentration spikes of I-131 related to the Fukushima Daiichi accident releases, no detectable I

-131 has been observed.

The pre-operational data for I

-131 are consistent with present (2018) data. Therefore, there are no increasing or decreasing trends related to Seabrook Station operations for airborne I

-131. The potential organ doses from I

-131 in gaseous effluents

, if assumed to be released at the MDA , are well below the 10CFR50, Appendix I dose criteria.

The REMP Summary Table 3.2

-1 list the range of analysis results for iodine (I

-131) at both Indicator and Control Stations. Attachment 1 to this report list s the individual analysis results for each air sample measurement under the Sample Type code CF.

Charcoal filter sample collection and analysis deviations from the ODCM required program (if any) are described in Section

5.

Table 3.2-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Charcoal Cartridge (CF) UNITS: pCi/cubic meter Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

I-131 (215) 0.07 -2.7E -4 09 1.8E -3 1.8E -3 (0) ( -3.2 - 1.5)E -2 ( -1.0 - 3.6)E -2 ( -1.0 - 3.6)E -2 (0/ 188) (0/ 27) (0/ 27)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

-0.04-0.020.000.020.040.060.080.10-0.04-0.020.000.020.040.060.080.10JanFebMarAprMayJunJulAugSepOctNovDecpCi/cubic meter2018FIGURE 3.2 I-131 MEASUREMENTS OF AIR CHARCOAL CARTRIDGES SEABROOK STATIONCF-01 Barge Landing AreaCF-02 Hampton MarinaCF-03 SW BoundaryCF-04 W BoundaryCF-05 Winnacunnet High SchoolCF-08 Exeter & Hampton Electric Co.CF-09 Georgetown (Control)CF-07 PSNH Substation, HamptonAll data < MDC 3.3 Milk Milk samples (TM) were collected semi

-monthly during the pasture season and monthly at other times. Samples are analyzed for low le ve l I-131 and gamma

-emitting radionuclides.

The ODCM (Table A.9.1

-1) requires that milk samples be collected from three locations within 5 km of the plant having the highest dose potential. If there are none, then one sample is required from milking animals in each of three areas between 5 to 8 km from the plant where the doses are calculated to be greater than 1 mrem/yr. Due to the limited in ventory of milk animals in the site area, as reconfirmed by the 2018 Land Use Census, the number of available sample locations required by the ODCM sampling program could not be met (insufficient numbers of milk animals within 5 km, and only one goat milk location

[designated TM

-15] between 5 and 8 km). The ODCM allows for broad leaf vegetation samples to be collected if milk sampling can not be performed in accordance to the REMP requirements. As a result, two site boundary locations and one control vegetation location are sampled to compensate for the limited milk availability (see Section 3.12).

A total of 19 milk samples were collected during the year from one available location. Each sample was analyzed for gamma emitting radionuclides. In addition, all samples were evaluated for low levels of I-131 through an iodine extraction process. The gamma analyses on samples indicated that naturally-occurring K-40 was detectable in all milk samples. Also detected in 14 milk samples was Cs-137 at an averag e concentration of 4.19 pCi/kg (positive measurements only) which falls in the range of past and pre-operational measurements

. The highest single Cs

-137 analysis result in 2018 was 6.81 pCi/kg. Though the Fukushima Daiichi event in March 2011 may have contributed to the Cs

-137 levels observed in milk in 2018, Cs-137 has historically been detected at similar levels in milk before the nuclear accident in Japan. Residual Cs

-137 from past weapons testing fallout has been the major contributor attributed to the currently observed values in milk. Figures 3.3, 3.3.1 and 3.3.2 illustrate the analysis results (without regard to whether individual analysis indicated detectabl e or statistically not detectable concentrations) for Cs-137 in milk o ver the current period (2018) and previous years. Iodine-131 was not positi vely identified at any location for the year. This is consistent with previous years for both the pre

-operational and operational phases of the program. All sample s except for one met the Lower Limit of Detection (LLD) requirements (1 pCi/kg) for I

-131 in milk. The reason for the missed LLD in the milk sample was the short half

-life for I

-131. No increasing or decreasing trends in the radioactivity content of milk were observed. The REMP Summary Table 3.3

-1 list s the range of analysis results by radionuclide for the Indicator Station (Historical Control Stations for the milk have ceased operations). Attachment 1 to this report list s the individual analysis results for each measurement of milk under the Sample Type code TM. Section 5 identifies deviations in the sample measurement program (if any), such as missed lower limits of detection (LLD) requirements

.

5 0 5 10 15 20 25 30JanFebMarAprMayJunJulAugSepOctNovDecpCi/kg 2018FIGURE 3.3 CESIUM-137 IN MILK SEABROOK STATIONTM-15, Hampton Falls NH (Goats)

C s-137 > MDC for all measurements

0 5 10 15 20 25 30 0 5 10 15 20 25 30pCi/kgFIGURE 3.3.1CESIUM-137 IN MILKANNUAL AVERAGE CONCENTRATIONSTM-04, Salisbury MATM-08, Hampton Falls NH (prior to 1995 TM-10)TM-09, Hampton NHTM-15, Hampton Falls NHChernobyl May, 1986SB 5% CriticalityJune, 1989SB Full Power May, 1990Fukushima-Daichii EventMarch 2011

0 5 10 15 20 25 30 0 5 10 15 20 25 30pCi/kg FIGURE 3.3.2 CESIUM-137 IN MILK ANNUAL AVERAGE CONCENTRATIONS TM-16, Kensington NHTM-21, North Andover MA (Control)TM-23, Newbury, MATM-24, North Hampton NHTM-20, Rowley MA (Control)Chernobyl May, 1986 SB 5% Criticality June, 1989 SB Full Power May, 1990 Fukushima-Daichii Event March 2011

Table 3.3-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Milk (TM) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Be-7 (19) -3.0E -1 15 -3.0E -1 NO DATA (0) ( -6.5 - 8.2)E 0 ( -6.5 - 8.2)E 0 (0/ 19) (0/ 19) K-40 (19) 1.7E 3 15 1.7E 3 NO DATA (0) ( 1.5 - 2.1)E 3 ( 1.5 - 2.1)E 3 (19/ 19) (19/ 19) Cr-51 (19) -1.1E 0 15 -1.1E 0 NO DATA (0) ( -9.6 - 6.6)E 0 ( -9.6 - 6.6)E 0 (0/ 19) (0/ 19) Mn-54 (19) -1.4E -1 15 -1.4E -1 NO DATA (0) ( -1.9 - 0.8)E 0 ( -1.9 - 0.8)E 0 (0/ 19) (0/ 19) Co-57 (19) 7.7E -3 15 7.7E -3 NO DATA (0) ( -8.2 - 7.3)E -1 ( -8.2 - 7.3)E -1 (0/ 19) (0/ 19) Co-58 (19) -2.2E -1 15 -2.2E -1 NO DATA (0) ( -1.7 - 0.7)E 0 ( -1.7 - 0.7)E 0 (0/ 19) (0/ 19) Fe-59 (19) -8.3E -2 15 -8.3E -2 NO DATA (0) ( -2.3 - 2.2)E 0 ( -2.3 - 2.2)E 0 (0/ 19) (0/ 19) Co-60 (19) 1.2E -1 15 1.2E -1 NO DATA (0) ( -1.8 - 1.6)E 0 ( -1.8 - 1.6)E 0 (0/ 19) (0/ 19) Zn-65 (19) -2.7E -1 15 -2.7E -1 NO DATA (0) ( -2.1 - 2.7)E 0 ( -2.1 - 2.7)E 0 (0/ 19) (0/ 19) Se-75 (19) -1.4E -1 15 -1.4E -1 NO DATA (0) ( -1.7 - 1.9)E 0 ( -1.7 - 1.9)E 0 (0/ 19) (0/ 19) Nb-95 (19) 4.8E -1 15 4.8E -1 NO DATA (0) ( -5.3 - 15.6)E -1 ( -5.3 - 15.6)E -1 (0/ 19) (0/ 19) Zr-95 (19) -4.5E -3 15 -4.5E -3 NO DATA (0) ( -3.3 - 1.5)E 0 ( -3.3 - 1.5)E 0 (0/ 19) (0/ 19) Ru-103 (19) -1.7E -1 15 -1.7E -1 NO DATA (0) ( -1.2 - 1.6)E 0 ( -1.2 - 1.6)E 0 (0/ 19) (0/ 19) Ru-106 (19) 3.6E -1 15 3.6E -1 NO DATA (0) ( -8.3 - 8.7)E 0 ( -8.3 - 8.7)E 0 (0/ 19) (0/ 19)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.3-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Milk (TM) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ag-108m (19) 2.9E -2 15 2.9E -2 NO DATA (0) ( -1.2 - 1.1)E 0 ( -1.2 - 1.1)E 0 (0/ 19) (0/ 19) Ag-110m (19) -2.5E -1 15 -2.5E -1 NO DATA (0) ( -1.3 - 1.1)E 0 ( -1.3 - 1.1)E 0 (0/ 19) (0/ 19) Sb-124 (19) -2.8E -1 15 -2.8E -1 NO DATA (0) ( -4.3 - 2.7)E 0 ( -4.3 - 2.7)E 0 (0/ 19) (0/ 19) Sb-125 (19) 6.3E -2 15 6.3E -2 NO DATA (0) ( -3.0 - 4.4)E 0 ( -3.0 - 4.4)E 0 (0/ 19) (0/ 19) I-131 (19) 1 -6.5E -2 15 -6.5E -2 NO DATA (0) ( -6.0 - 3.2)E -1 ( -6.0 - 3.2)E -1 (0/ 19) (0/ 19) Cs-134 (19) 15 3.9E -1 15 3.9E -1 NO DATA (0) ( -2.2 - 21.3)E -1 ( -2.2 - 21.3)E -1 (0/ 19) (0/ 19) Cs-137 (19) 18 3.3E 0 15 3.3E 0 NO DATA (0) ( -4.5 - 68.1)E -1 ( -4.5 - 68.1)E -1 (14/ 19) (14/ 19) Ba-140 (19) 15 5.5E -1 15 5.5E -1 NO DATA (0) ( -3.6 - 5.9)E 0 ( -3.6 - 5.9)E 0 (0/ 19) (0/ 19) La-140 (19) 15 -5.2E -1 15 -5.2E -1 NO DATA (0) ( -2.6 - 1.5)E 0 ( -2.6 - 1.5)E 0 (0/ 19) (0/ 19) Ce-141 (19) -1.7E 0 15 -1.7E 0 NO DATA (0) ( -5.3 - 2.7)E 0 ( -5.3 - 2.7)E 0 (0/ 19) (0/ 19) Ce-144 (19) 1.1E -1 15 1.1E -1 NO DATA (0) ( -6.6 - 6.3)E 0 ( -6.6 - 6.3)E 0 (0/ 19) (0/ 19) Ac-228 (18) -4.6E -1 15 -4.6E -1 NO DATA (0) ( -1.0 - 0.6)E 1 ( -1.0 - 0.6)E 1 (0/ 18) (0/ 18) Th-228 (19) 5.5E -1 15 5.5E -1 NO DATA (0) ( -1.8 - 3.5)E 0 ( -1.8 - 3.5)E 0 (0/ 19) (0/ 19)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e.

, > MDC with no uncertain identification) is shown in parentheses

.

3.4 Surface Water Surface water (seawater - WS) grab samples are required at two locations (control and indicator) monthly. The indicator (WS-01) is o ver the vicinity of the plant's submerged discharge structure. The control location (WS-51) is situated in Ipswich Bay, MA, approximately 26.2 k m from the plant. A gamma analysis is performed on each sample. A tritium analysis is performed on the quarterly composite of samples from each ODCM required location. Additional samples were collected from the Seabrook Marsh (WS-10) which borders the immediate plant property. The marsh samples are intended to provide indication of any ground water movement across the site area that might carry contamination into the surface waters of the marsh.

Each of these samples is analyzed for both gamma emitters and tritium.

For 2018, a total of 26 gamma analyses were performed on surface water samples. The only radionuclide s detected were naturally-occurring K-40, which was detected in all samples, and naturally

-occurring Bi

-214, which was detected in one sample. No plant-related nuclides were detected. The present data for gamma emitters in seawater is consistent with that of the pre

-operational program and previous years of operations. Therefore, no increasing or decreasing trends were obser ved. Quarterly composites for the required off

-shore locations (Stations WS

-01 and WS-51) were analyzed for tritium. A total of 8 off-shore samples (composite s) were analyzed in 2018, plus two additional sample s from the non-ODCM required location (WS

-10) situated approximately 600 feet SSE from the Containment Building in Seabrook Marsh. The quarterly composites and WS-10 sample showed no indication of tritium. All samples met the required mini m um LLD (3000 pCi/kg) for tritium in seawater. These results are consistent with pre

-operational tritium data.

The achieved tritium Minimum Detectable Concentration (MDC) for the quarterly off

-shore composite samples averaged 520 pCi/kg, while the marsh area sample s from WS-10 had an MDC of 539 pCi/kg. The calculated dose as the result of plant effluents is not evaluated due to the fact that no plant-related radionuclides were or ha ve been detected in the past. Therefore, no increasing or decreasing trends in dose were obser ved. This sampling program demonstrates that there is no impact to the public or environment, through this pathway from plant operations.

The REMP Summary Table 3.4

-1 list s the range of analysis results by radionuclide for Indicator and Control Stations for the sea water environmental media. Attachment 1 to this report list s the individual analysis results for each measurement of sea water under the Sample Type code WS.

Any sample collection and analysis deviations from the ODCM required program or reportable concentrations that may ha ve occurred during the year are described in Section

5.

Table 3.4-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Sea Water (WS) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

H-3 (10) 3000 9.6E 0 10 8.2E 1 -2.3E 1 (0) ( -2.7 - 1.9)E 2 ( 6.3 - 10.1)E 1 ( -2.5 - 1.5)E 2 (0/ 6) (0/ 2) (0/ 4) Be-7 (26) -8.6E -1 10 1.9E 0 -3.6E 0 (0) ( -8.2 - 8.2)E 0 ( -4.4 - 8.2)E 0 ( -6.1 - 0.8)E 1 (0/ 14) (0/ 2) (0/ 12) K-40 (26) 3.0E 2 01 3.3E 2 3.0E 2 (0) ( 5.1 - 37.6)E 1 ( 2.9 - 3.8)E 2 ( 2.7 - 3.4)E 2 (14/ 14) (12/ 12) (12/ 12) Cr-51 (26) 1.9E 0 10 6.8E 0 -1.1E 0 (0) ( -7.0 - 14.2)E 0 ( 5.9 - 7.7)E 0 ( -1.2 - 0.8)E 1 (0/ 14) (0/ 2) (0/ 12) Mn-54 (26) 15 -2.4E -1 51 -5.2E -2 -5.2E -2 (0) ( -1.2 - 1.2)E 0 ( -8.4 - 8.2)E -1 ( -8.4 - 8.2)E -1 (0/ 14) (0/ 12) (0/ 12) Co-57 (26) -5.1E -2 10 1.8E -1 8.6E -2 (0) ( -1.1 - 0.9)E 0 ( -2.2 - 5.8)E -1 ( -3.9 - 8.6)E -1 (0/ 14) (0/ 2) (0/ 12) Co-58 (26) 15 -1.7E -1 51 5.4E -2 5.4E -2 (0) ( -1.1 - 0.6)E 0 ( -5.2 - 10.0)E -1 ( -5.2 - 10.0)E -1 (0/ 14) (0/ 12) (0/ 12) Fe-59 (26) 30 3.2E -1 01 3.5E -1 -7.2E -2 (0) ( -1.5 - 2.0)E 0 ( -1.5 - 2.0)E 0 ( -1.7 - 2.0)E 0 (0/ 14) (0/ 12) (0/ 12) Co-60 (26) 15 1.5E -1 51 4.0E -1 4.0E -1 (0) ( -6.1 - 12.5)E -1 ( -7.5 - 9.5)E -1 ( -7.5 - 9.5)E -1 (0/ 14) (0/ 12) (0/ 12) Zn-65 (26) 30 -1.9E -1 10 4.0E -1 8.4E -2 (0) ( -1.7 - 1.3)E 0 ( -5.2 - 13.2)E -1 ( -1.6 - 2.1)E 0 (0/ 14) (0/ 2) (0/ 12) Se-75 (26) -4.5E -2 51 1.6E -1 1.6E -1 (0) ( -2.1 - 0.9)E 0 ( -5.2 - 8.5)E -1 ( -5.2 - 8.5)E -1 (0/ 14) (0/ 12) (0/ 12) Nb-95 (26) 15 9.9E -3 10 4.2E -1 1.8E -1 (0) ( -1.3 - 1.3)E 0 ( 2.8 - 5.6)E -1 ( -3.2 - 11.6)E -1 (0/ 14) (0/ 2) (0/ 12) Zr-95 (26) 15 -1.6E -1 51 2.9E -1 2.9E -1 (0) ( -2.6 - 1.2)E 0 ( -1.2 - 1.9)E 0 ( -1.2 - 1.9)E 0 (0/ 14) (0/ 12) (0/ 12) Ru-103 (26) -2.2E -1 10 1.1E -1 -3.8E -1 (0) ( -1.2 - 0.7)E 0 ( -4.2 - 25.4)E -2 ( -1.4 - 0.5)E 0 (0/ 14) (0/ 2) (0/ 12) Ru-106 (26) 4.6E -3 51 8.0E -1 8.0E -1 (0) ( -9.1 - 13.1)E 0 ( -6.1 - 10.0)E 0 ( -6.1 - 10.0)E 0 (0/ 14) (0/ 12) (0/ 12)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.4-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Sea Water (WS) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ag-108m (26) -2.9E -2 10 6.5E -2 -1.5E -1 (0) ( -7.4 - 8.7)E -1 ( -7.4 - 8.7)E -1 ( -7.2 - 4.3)E -1 (0/ 14) (0/ 2) (0/ 12) Ag-110m (26) -1.5E -1 10 6.1E -1 -2.5E -2 (0) ( -9.7 - 11.7)E -1 ( 4.2 - 117.0)E -2 ( -2.4 - 1.5)E 0 (0/ 14) (0/ 2) (0/ 12) Sb-124 (26) 4.2E -1 01 4.4E -1 5.1E -2 (0) ( -1.0 - 2.7)E 0 ( -1.0 - 2.7)E 0 ( -1.8 - 2.0)E 0 (0/ 14) (0/ 12) (0/ 12) Sb-125 (26) 3.6E -1 10 1.1E 0 7.2E -2 (0) ( -3.1 - 2.8)E 0 ( -5.6 - 27.5)E -1 ( -1.1 - 1.4)E 0 (0/ 14) (0/ 2) (0/ 12) I-131 (26) 15 -1.5E -2 51 3.0E -1 3.0E -1 (0) ( -1.8 - 1.7)E 0 ( -9.6 - 18.8)E -1 ( -9.6 - 18.8)E -1 (0/ 14) (0/ 12) (0/ 12) Cs-134 (26) 15 4.5E -2 10 8.0E -2 -1.1E -1 (0) ( -1.3 - 1.5)E 0 ( 5.0 - 11.1)E -2 ( -1.5 - 1.3)E 0 (0/ 14) (0/ 2) (0/ 12) Cs-137 (26) 18 1.7E -1 10 6.0E -1 2.5E -1 (0) ( -2.1 - 1.1)E 0 ( 5.1 - 6.8)E -1 ( -3.0 - 7.8)E -1 (0/ 14) (0/ 2) (0/ 12) Ba-140 (26) 15 -2.1E -1 51 6.4E -1 6.4E -1 (0) ( -4.7 - 3.7)E 0 ( -3.6 - 3.9)E 0 ( -3.6 - 3.9)E 0 (0/ 14) (0/ 12) (0/ 12) La-140 (26) 15 -1.1E 0 51 -9.4E -2 -9.4E -2 (0) ( -2.4 - 0.1)E 0 ( -2.3 - 1.3)E 0 ( -2.3 - 1.3)E 0 (0/ 14) (0/ 12) (0/ 12) Ce-141 (26) -6.4E -1 01 -6.0E -1 -2.2E 0 (0) ( -4.2 - 1.0)E 0 ( -4.2 - 1.0)E 0 ( -8.8 - 0.1)E 0 (0/ 14) (0/ 12) (0/ 12) Ce-144 (26) -1.1E 0 51 2.0E 0 2.0E 0 (0) ( -6.6 - 6.6)E 0 ( -1.8 - 5.5)E 0 ( -1.8 - 5.5)E 0 (0/ 14) (0/ 12) (0/ 12) Pb-212 (26) 4.0E -1 10 9.7E -1 2.9E -1 (0) ( -1.1 - 3.7)E 0 ( 7.1 - 186.0)E -2 ( -3.4 - 2.5)E 0 (0/ 14) (0/ 2) (0/ 12) Pb-214 (26) -1.5E 0 10 6.2E -1 -7.8E -1 (0) ( -5.7 - 4.0)E 0 ( -7.6 - 20.0)E -1 ( -2.9 - 2.5)E 0 (0/ 14) (0/ 2) (0/ 12)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

Table 3.4-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Sea Water (WS) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Bi-214 (26) 1.1E 0 10 1.7E 0 1.2E 0 (0) ( -4.6 - 7.4)E 0 ( 1.7 - 1.7)E 0 ( -6.4 - 36.7)E -1 (1/ 14) (0/ 2) (0/ 12) Ac-228 (26) -2.4E 0 10 -1.0E 0 -1.6E 0 (0) ( -6.8 - 3.9)E 0 ( -2.7 - 0.7)E 0 ( -8.8 - 5.3)E 0 (0/ 14) (0/ 2) (0/ 12) Th-228 (26) 4.0E -1 10 9.7E -1 2.9E -1 (0) ( -1.1 - 3.7)E 0 ( 7.1 - 186.0)E -2 ( -3.4 - 2.5)E 0 (0/ 14) (0/ 2) (0/ 12)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e.

, > MDC with no uncertain identification) is shown in parentheses.

3.5 Ground Water There is no requirement in the ODCM to collect ground water (WG) samples. For the year, quarterly ground water samples were collected when available from three locations. These samples were collected from the town water line (WG-01) supplied to the Site (by the Town of Seabrook)

, from an inacti ve well (WG-13) located approximately 1 km north of the plant, and from a private well 1.3 k m NNW (WG-14). For 2018, a total of 12 samples were collected. All samples were analyzed for gross

-beta activity, gamma-emitters and tritium.

Gross beta activity was detected in 4 of the 12 samples due to naturally-occurring radium and its daughter products. The gross beta activity is consistent with results from previous years of commercial operations. Figures 3.5 and 3.5.1 indicate the current year (2018) and the long

-term measurement history for gross beta in well waters. No tritium or plant-related gamma emitters were detected in any of the ground water samples collected during the year. Table 3.5-1 identifies the results of the search for radionuclides of which only naturally-occurring Pb

-214 was detected in 3 of 12 samples, naturally

-occurring Bi

-214 were detected in 4 of 12 samples and naturally-occurring Ac-228 was detected in 1 of 12 samples

. The dose potential to the public from drinking ground water is not evaluated due to the fact that plant-related radionuclides ha ve not been detected. Therefore , no increasing or decreasing trends were obser ved. There is no impact to the public, through this pathway, from plant operations.

The REMP Summary Table 3.5

-1 list s the range of analysis results by radionuclide for all ground water environmental samples. Attachment 1 to this report list s the individual analysis results for each measurement of ground water under the Sample Type code WG.

Any reportable sample concentrations that may ha ve occurred during the year are described in Section

5.

-2 0 2 4 6 8 10 12 14 16 18 20FebMarAprMayMayJunJulAugSepOctOctNovDecJanpCi/kgFIGURE 3.5 GROSS-BETA MEASUREMENTS OF GROUND WATER SEABROOK STATIONWG-01 Seabrook Town WellsWG-13 Seabrook Station Well No. 13WG-14 Brimmer's Lane 2018

-2 3 8 13 18199019921994199619982000200220042006200820102012201420162018pCi/kgFIGURE 3.5.1 GROSS-BETA MEASUREMENTS OF GROUND WATERSEMI-ANNUAL AVERAGESSEABROOK STATIONWG-01 Seabrook Town WellsWG-14 Brimmer's LaneWG-13 Seabrook Station Well No. 13

Table 3.5-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Ground Water (WG) UNITS: pCi/

kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

BETA (12) 4 3.3E 0 01 5.9E 0 NO DATA (0) ( 1.2 - 8.0)E 0 ( 2.8 - 8.0)E 0 (4/ 12) (3/ 4) H-3 (12) 3000 4.3E 1 13 9.4E 1 NO DATA (0) ( -1.3 - 4.0)E 2 ( -1.3 - 4.0)E 2 (0/ 12) (0/ 4) Be-7 (12) -2.4E 0 01 2.0E 0 NO DATA (0) ( -1.5 - 0.6)E 1 ( -2.9 - 6.3)E 0 (0/ 12) (0/ 4) K-40 (12) 4.7E -1 14 3.0E 0 NO DATA (0) ( -3.0 - 1.4)E 1 ( -1.6 - 1.4)E 1 (0/ 12) (0/ 4) Cr-51 (12) 1.1E 0 13 4.0E 0 NO DATA (0) ( -3.6 - 8.6)E 0 ( 1.4 - 8.6)E 0 (0/ 12) (0/ 4) Mn-54 (12) 15 -1.3E -1 01 2.2E -1 NO DATA (0) ( -9.6 - 4.6)E -1 ( 1.2 - 3.2)E -1 (0/ 12) (0/ 4) Co-57 (12) 8.4E -2 14 1.3E -1 NO DATA (0) ( -5.9 - 8.4)E -1 ( -4.2 - 8.4)E -1 (0/ 12) (0/ 4) Co-58 (12) 15 -9.4E -2 01 3.9E -1 NO DATA (0) ( -7.3 - 5.5)E -1 ( 2.5 - 5.5)E -1 (0/ 12) (0/ 4) Fe-59 (12) 30 2.1E -1 14 3.3E -1 NO DATA (0) ( -1.4 - 2.5)E 0 ( -9.5 - 87.1)E -2 (0/ 12) (0/ 4) Co-60 (12) 15 -2.3E -1 01 2.3E -1 NO DATA (0) ( -1.9 - 0.6)E 0 ( -2.8 - 60.7)E -2 (0/ 12) (0/ 4) Zn-65 (12) 30 2.6E -1 01 8.9E -1 NO DATA (0) ( -1.2 - 2.6)E 0 ( -7.7 - 25.5)E -1 (0/ 12) (0/ 4) Se-75 (12) -7.8E -2 14 2.9E -1 NO DATA (0) ( -1.0 - 1.2)E 0 ( -1.0 - 1.2)E 0 (0/ 12) (0/ 4) Nb-95 (12) 15 -2.8E -2 14 1.9E -1 NO DATA (0) ( -1.6 - 0.9)E 0 ( -2.9 - 9.2)E -1 (0/ 12) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.5-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Ground Water (WG) UNITS: pCi/

kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Zr-95 (12) 15 -1.6E -1 01 1.5E -1 NO DATA (0) ( -2.2 - 1.6)E 0 ( -7.2 - 16.1)E -1 (0/ 12) (0/ 4) Ru-103 (12) -1.8E -1 13 1.1E -2 NO DATA (0) ( -1.4 - 0.9)E 0 ( -1.5 - 1.8)E -1 (0/ 12) (0/ 4) Ru-106 (12) -1.8E 0 14 -4.3E -1 NO DATA (0) ( -6.1 - 4.5)E 0 ( -4.1 - 4.5)E 0 (0/ 12) (0/ 4) Ag-108m (12) -1.7E -1 01 1.7E -1 NO DATA (0) ( -1.4 - 0.6)E 0 ( -8.1 - 55.6)E -2 (0/ 12) (0/ 4) Ag-110m (12) -4.1E -2 13 3.7E -2 NO DATA (0) ( -2.2 - 1.5)E 0 ( -2.8 - 13.1)E -2 (0/ 12) (0/ 4) Sb-124 (12) 5.0E -1 14 9.7E -1 NO DATA (0) ( -1.3 - 3.6)E 0 ( -5.8 - 36.3)E -1 (0/ 12) (0/ 4) Sb-125 (12) -2.1E -1 01 1.2E -1 NO DATA (0) ( -1.9 - 2.2)E 0 ( -1.2 - 2.2)E 0 (0/ 12) (0/ 4) I-131 (12) 15 9.4E -2 13 4.3E -1 NO DATA (0) ( -2.5 - 0.9)E 0 ( -4.1 - 9.4)E -1 (0/ 12) (0/ 4) Cs-134 (12) 15 1.1E -1 14 2.9E -1 NO DATA (0) ( -6.8 - 11.6)E -1 ( -2.4 - 5.7)E -1 (0/ 12) (0/ 4) Cs-137 (12) 18 -4.2E -1 01 -1.5E -2 NO DATA (0) ( -2.3 - 0.6)E 0 ( -5.1 - 5.8)E -1 (0/ 12) (0/ 4) Ba-140 (12) 15 7.4E -1 14 2.4E 0 NO DATA (0) ( -7.3 - 8.1)E 0 ( -1.1 - 8.1)E 0 (0/ 12) (0/ 4) La-140 (12) 15 -5.9E -1 13 -4.3E -2 NO DATA (0) ( -4.6 - 1.1)E 0 ( -1.3 - 0.8)E 0 (0/ 12) (0/ 4) Ce-141 (12) -1.7E 0 01 -5.4E -1 NO DATA (0) ( -7.7 - 1.6)E 0 ( -1.8 - 1.6)E 0 (0/ 12) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e.

, >3 standard deviations with no uncertain identification) is shown in parentheses.

Table 3.5-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Ground Water (WG) UNITS: pCi/

kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ce-144 (12) -2.5E -1 13 1.2E 0 NO DATA (0) ( -1.1 - 0.4)E 1 ( -1.4 - 3.7)E 0 (0/ 12) (0/ 4) Pb-212 (12) 1.1E 0 14 1.6E 0 NO DATA (0) ( -7.9 - 42.5)E -1 ( 5.6 - 20.4)E -1 (0/ 12) (0/ 4) Pb-214 (12) 4.2E 1 14 1.1E 2 NO DATA (0) ( -9.8 - 4070.0)E -1 ( 0.0 - 4.1)E 2 (3/ 12) (2/ 4) Bi-214 (12) 3.9E 1 14 1.1E 2 NO DATA (0) ( -2.7 - 384.0)E 0 ( 0.0 - 3.8)E 2 (4/ 12) (3/ 4) Ac-228 (12) 9.9E -1 01 3.1E 0 NO DATA (0) ( -5.8 - 9.7)E 0 ( -5.8 - 9.7)E 0 (1/ 12) (1/ 4) Th-228 (12) 1.1E 0 14 1.6E 0 NO DATA (0) ( -7.9 - 42.5)E -1 ( 5.6 - 20.4)E -1 (0/ 12) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

3.6 Sediment Semiannual sediment sampling is required at one indicator location, although a total of fi ve locations, three indicators and two controls, are collected. The indicator stations are comprised of two sets of beach sediment cores from Hampton Beach (SE

-07) and Seabrook Beach (SE

-08), plus two sub-tidal sediment core s taken from near the discharge structure (SE-02). The control locations, Plum Island Beach (SE-57) and sub-tidal Ipswich Bay (SE-52), are both located with in Ipswich Bay. A total of 10 samples were collected for the year from all locations. All cores were analyzed as single or whole samples without segmenting.

A gamma analysis was performed on each core

.

Table 3.6-1 identifies the results of the search for radionuclides of which several naturally-occurring were detected.

The naturally-occurring radionuclides include K-40 and nuclides of the Uranium

-238 decay chain (Th-230, Ra-226, Pb-214 and Bi-214) and the Thorium

-232 decay chain (Ac

-228, Th-228, Pb-212, and Tl-208). No plant-related radionuclides were detected in any core. No increasing or decreasing trends were obser ved. This is consistent with the pre

-operational program and with previous years of plant operations. There is no plant related dose to the public or impact to the environment from any pathways associated with this media.

The REMP Summary Table 3.6

-1 list s the range of analysis results by radionuclide for Indicator and Control Stations for the sediment environmental media. Attachment 1 to this report list s the individual analysis results for each measurement of sediment under the Sample Type code SE.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations that may ha ve occurred during the year are described in Section

5.

Table 3.6-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Sediment (SE) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Be-7 (10) -2.1E 1 07 3.1E 1 -7.9E 1 (0) ( -1.5 - 1.0)E 2 ( -4.1 - 10.3)E 1 ( -2.0 - 0.0)E 2 (0/ 6) (0/ 2) (0/ 4) K-40 (10) 1.9E 4 08 2.4E 4 1.4E 4 (0) ( 1.4 - 2.7)E 4 ( 2.1 - 2.7)E 4 ( 1.2 - 1.7)E 4 (6/ 6) (2/ 2) (4/ 4) Cr-51 (10) -5.1E 1 07 -9.0E 0 -1.6E 2 (0) ( -1.3 - 0.8)E 2 ( -9.4 - 7.6)E 1 ( -3.7 - 0.8)E 2 (0/ 6) (0/ 2) (0/ 4) Mn-54 (10) 1.7E 1 52 3.6E 1 1.5E 1 (0) ( -6.8 - 45.3)E 0 ( 3.4 - 3.8)E 1 ( -1.5 - 3.8)E 1 (0/ 6) (0/ 2) (0/ 4) Co-57 (10) -2.4E 0 52 6.7E 0 9.5E -1 (0) ( -1.4 - 1.3)E 1 ( 6.1 - 7.4)E 0 ( -8.5 - 7.4)E 0 (0/ 6) (0/ 2) (0/ 4) Co-58 (10) 1.1E 1 02 1.9E 1 -7.1E 0 (0) ( -7.6 - 40.5)E 0 ( -2.0 - 40.5)E 0 ( -2.9 - 2.5)E 1 (0/ 6) (0/ 2) (0/ 4) Fe-59 (10) 5.5E 0 02 6.4E 1 -3.5E 1 (0) ( -4.7 - 7.6)E 1 ( 5.1 - 7.6)E 1 ( -9.2 - 4.1)E 1 (0/ 6) (0/ 2) (0/ 4) Co-60 (10) -2.9E 0 57 1.2E 1 8.2E 0 (0) ( -2.5 - 1.2)E 1 ( -9.6 - 34.1)E 0 ( -9.6 - 34.1)E 0 (0/ 6) (0/ 2) (0/ 4) Zn-65 (10) 6.1E 0 02 5.9E 1 -1.5E 1 (0) ( -8.3 - 8.2)E 1 ( 3.5 - 8.2)E 1 ( -3.7 - 1.6)E 1 (0/ 6) (0/ 2) (0/ 4) Se-75 (10) 1.5E 0 02 5.9E 0 -4.6E 0 (0) ( -1.1 - 1.4)E 1 ( -2.3 - 14.1)E 0 ( -2.0 - 0.9)E 1 (0/ 6) (0/ 2) (0/ 4) Nb-95 (10) 3.8E 0 02 2.6E 1 4.6E 0 (0) ( -2.2 - 3.5)E 1 ( 1.8 - 3.5)E 1 ( -1.1 - 1.7)E 1 (0/ 6) (0/ 2) (0/ 4) Zr-95 (10) 4.4E 1 02 7.3E 1 1.4E 1 (0) ( 7.3 - 127.0)E 0 ( 2.0 - 12.7)E 1 ( 6.1 - 300.0)E -1 (0/ 6) (0/ 2) (0/ 4) Ru-103 (10) -1.7E 0 02 2.0E 1 -3.1E -1 (0) ( -3.9 - 2.5)E 1 ( 1.5 - 2.5)E 1 ( -3.1 - 2.2)E 1 (0/ 6) (0/ 2) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.6-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Sediment (SE) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ru-106 (10) 1.2E 2 52 1.9E 2 6.0E 1 (0) ( 4.2 - 31.2)E 1 ( 1.7 - 2.0)E 2 ( -1.5 - 2.0)E 2 (0/ 6) (0/ 2) (0/ 4) Ag-108m (10) -3.2E 0 57 1.0E -1 -1.1E 0 (0) ( -1.5 - 0.8)E 1 ( -1.0 - 1.0)E 1 ( -1.0 - 1.0)E 1 (0/ 6) (0/ 2) (0/ 4) Ag-110m (10) -6.8E 0 08 1.6E 1 -1.6E 0 (0) ( -4.1 - 2.3)E 1 ( 8.9 - 23.0)E 0 ( -2.2 - 2.9)E 1 (0/ 6) (0/ 2) (0/ 4) Sb-124 (10) -3.0E 0 08 1.4E 1 -1.7E 1 (0) ( -4.6 - 5.0)E 1 ( -2.1 - 5.0)E 1 ( -4.0 - 0.4)E 1 (0/ 6) (0/ 2) (0/ 4) Sb-125 (10) -8.1E 0 07 8.2E 0 -1.2E 1 (0) ( -3.8 - 3.0)E 1 ( -1.4 - 3.0)E 1 ( -6.0 - 1.8)E 1 (0/ 6) (0/ 2) (0/ 4) I-131 (10) -8.7E 1 52 8.7E 1 -3.9E 1 (0) ( -2.5 - 1.2)E 2 ( -5.3 - 22.7)E 1 ( -3.0 - 2.3)E 2 (0/ 6) (0/ 2) (0/ 4) Cs-134 (10) 150 2.0E 1 52 4.6E 1 3.7E 1 (0) ( 0.0 - 4.9)E 1 ( 0.0 - 9.2)E 1 ( 0.0 - 9.2)E 1 (0/ 6) (0/ 2) (0/ 4) Cs-137 (10) 180 5.1E 0 08 1.9E 1 -4.3E 0 (0) ( -1.5 - 2.2)E 1 ( 1.7 - 2.2)E 1 ( -1.4 - 0.8)E 1 (0/ 6) (0/ 2) (0/ 4) Ba-140 (10) 2.7E 1 07 1.5E 2 9.0E 0 (0) ( -2.8 - 3.6)E 2 ( 1.3 - 1.8)E 2 ( -2.6 - 3.2)E 2 (0/ 6) (0/ 2) (0/ 4) La-140 (10) -3.6E 0 52 8.9E 1 5.5E 0 (0) ( -8.7 - 11.8)E 1 ( 4.2 - 13.5)E 1 ( -1.5 - 1.4)E 2 (0/ 6) (0/ 2) (0/ 4) Ce-141 (10) -1.5E 1 02 1.7E 1 1.4E 0 (0) ( -7.3 - 5.1)E 1 ( -1.7 - 5.1)E 1 ( -2.7 - 3.7)E 1 (0/ 6) (0/ 2) (0/ 4) Ce-144 (10) -2.8E 0 02 4.0E 1 -3.0E 1 (0) ( -4.5 - 7.6)E 1 ( 3.7 - 76.3)E 0 ( -8.3 - 8.6)E 1 (0/ 6) (0/ 2) (0/ 4) Tl-208 (10) 2.1E 2 52 8.3E 2 4.8E 2 (0) ( 9.2 - 55.2)E 1 ( 8.3 - 8.4)E 2 ( 8.5 - 84.2)E 1 (6/ 6) (2/ 2) (4/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.6-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Sediment (SE) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Pb-212 (10) 8.0E 2 52 3.2E 3 1.8E 3 (0) ( 3.3 - 19.9)E 2 ( 3.1 - 3.3)E 3 ( 3.4 - 33.2)E 2 (6/ 6) (2/ 2) (4/ 4) Pb-214 (10) 4.3E 2 52 2.3E 3 1.3E 3 (0) ( 0.0 - 1.5)E 3 ( 2.1 - 2.4)E 3 ( 2.8 - 24.0)E 2 (5/ 6) (2/ 2) (4/ 4) Bi-214 (10) 5.1E 2 52 1.7E 3 1.0E 3 (0) ( 2.3 - 12.8)E 2 ( 1.6 - 1.9)E 3 ( 2.0 - 19.0)E 2 (6/ 6) (2/ 2) (4/ 4) Ra-226 (10) 5.1E 2 52 1.7E 3 1.0E 3 (0) ( 2.3 - 12.8)E 2 ( 1.6 - 1.9)E 3 ( 2.0 - 19.0)E 2 (6/ 6) (2/ 2) (4/ 4) Ac-228 (10) 7.4E 2 52 2.8E 3 1.6E 3 (0) ( 3.0 - 15.4)E 2 ( 2.8 - 2.8)E 3 ( 3.1 - 28.2)E 2 (5/ 6) (2/ 2) (4/ 4) Th-228 (10) 8.0E 2 52 3.2E 3 1.8E 3 (0) ( 3.3 - 19.9)E 2 ( 3.1 - 3.3)E 3 ( 3.4 - 33.2)E 2 (6/ 6) (2/ 2) (4/ 4) Th-230 (10) 5.1E 2 52 1.7E 3 1.0E 3 (0) ( 2.3 - 12.8)E 2 ( 1.6 - 1.9)E 3 ( 2.0 - 19.0)E 2 (6/ 6) (2/ 2) (4/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e.

, > MDC with no uncertain identification) is shown in parentheses

.

3.7 Fish Semiannual fish (FH) and in vertebrate samples are required by the ODCM REMP from two locations. Quarterly collections are attempted to ensure the sampling requirements are met. This section presents the results for fish sampling only. In vertebrate results may be found in Sections 3.8 and 3.9, entitled Lobsters and Shellfish, respecti vely. During the year, a total of 10 fish samples were collected. The fish species available from Station FH

-03 (indicator station) and Station FH-53 (control station) were dominated by Winter and Yellowtail Flounder which are bottom dwelling species. Two sample s of Cunner fish were also collected from sample location FH-06, which is located in the Hampton Bay area of the plant's discharge. Samples of Hake, Atlantic Herring and Sculpin were also collected from Station s FH-03 and FH-53. A gamma analysis was performed on the edible portion of each sample collected. In 2018, the only radionuclide detected was naturally-occurring K-40 (all samples)

. Table 3.7-1 summarizes the results for radionuclides in fish. Similar to past years, n o plant-related radionuclides were detected in any samples. As a result, no increasing or decreasing trends were obser ved. Subsequently, there is no dose to the public or impact to the environment through this pathway due to plant operations. This is consistent with previous years of plant operations, as well as the pre

-operational program. In addition to the required program for fish as defined in the ODCM, sampling was attempted to collect a local fish species (Cunner fish) that reside s in the upper regions of the water column using an alternate collection method from that used for the more prevalent bottom species (Flounder). For 2018, two Cunner sample s were collected from Hampton Bay. The results are listed in Attachment 1 as laboratory numbers 451281003 (5/22/2018) and 466612003 (12/06/2018

). No plant radionuclides were detected in the Cunner fish sample, with only naturally-occurring K-40 being found. The REMP Summary Table 3.7

-1 also list s the range of analysis results by radionuclide for Indicator and Control Stations for all fish environmental media. Attachment 1 to this report list s the individual analysis results for each measurement of fish under the Sample Type code FH.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations that may ha ve occurred during the year are described in Section

5.

Table 3.7-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Fish (FH) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Be-7 (10) -2.3E 1 03 -1.4E 1 -3.7E 1 (0) ( -1.1 - 0.2)E 2 ( -4.0 - 1.7)E 1 ( -7.9 - 1.8)E 1 (0/ 7) (0/ 5) (0/ 3) K-40 (10) 2.9E 3 53 3.3E 3 3.3E 3 (0) ( 2.2 - 3.9)E 3 ( 2.9 - 3.7)E 3 ( 2.9 - 3.7)E 3 (7/ 7) (3/ 3) (3/ 3) Cr-51 (10) 5.2E 0 53 4.1E 1 4.1E 1 (0) ( -1.5 - 1.6)E 2 ( -7.0 - 16.0)E 1 ( -7.0 - 16.0)E 1 (0/ 7) (0/ 3) (0/ 3) Mn-54 (10) 130 1.0E 0 06 4.1E 0 3.7E 0 (0) ( -5.2 - 7.5)E 0 ( 7.5 - 75.2)E -1 ( 1.2 - 5.0)E 0 (0/ 7) (0/ 2) (0/ 3) Co-57 (10) -1.1E 0 53 2.5E -2 2.5E -2 (0) ( -3.9 - 0.4)E 0 ( -2.7 - 2.8)E 0 ( -2.7 - 2.8)E 0 (0/ 7) (0/ 3) (0/ 3) Co-58 (10) 130 -1.7E 0 06 1.8E 0 -4.2E 0 (0) ( -8.5 - 3.7)E 0 ( 2.2 - 3680.0)E -3 ( -8.5 - -1.5)E 0 (0/ 7) (0/ 2) (0/ 3) Fe-59 (10) 260 3.5E 0 03 5.6E 0 -6.7E 0 (0) ( -1.4 - 3.2)E 1 ( -5.8 - 31.5)E 0 ( -1.7 - 0.9)E 1 (0/ 7) (0/ 5) (0/ 3) Co-60 (10) 130 1.2E 0 06 2.7E 0 1.9E 0 (0) ( -1.0 - 0.7)E 1 ( -1.1 - 6.6)E 0 ( -2.4 - 5.8)E 0 (0/ 7) (0/ 2) (0/ 3) Zn-65 (10) 260 1.2E 1 06 2.1E 1 4.3E 0 (0) ( -1.5 - 3.6)E 1 ( 5.9 - 36.1)E 0 ( -1.9 - 2.8)E 1 (0/ 7) (0/ 2) (0/ 3) Se-75 (10) -6.5E -1 53 8.5E -1 8.5E -1 (0) ( -7.3 - 3.2)E 0 ( -3.0 - 4.8)E 0 ( -3.0 - 4.8)E 0 (0/ 7) (0/ 3) (0/ 3) Nb-95 (10) 7.1E 0 06 1.3E 1 3.6E 0 (0) ( -5.4 - 214.0)E -1 ( 4.2 - 21.4)E 0 ( 1.9 - 84.0)E -1 (0/ 7) (0/ 2) (0/ 3) Zr-95 (10) -5.3E 0 53 7.6E 0 7.6E 0 (0) ( -2.0 - 0.0)E 1 ( 1.2 - 16.1)E 0 ( 1.2 - 16.1)E 0 (0/ 7) (0/ 3) (0/ 3) Ru-103 (10) 1.4E 0 53 2.0E 0 2.0E 0 (0) ( -1.1 - 5.2)E 0 ( -3.5 - 7.3)E 0 ( -3.5 - 7.3)E 0 (0/ 7) (0/ 3) (0/ 3)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.7-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Fish (FH) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ru-106 (10) -1.7E 1 53 1.0E 1 1.0E 1 (0) ( -1.4 - 0.5)E 2 ( -2.9 - 33.3)E 0 ( -2.9 - 33.3)E 0 (0/ 7) (0/ 3) (0/ 3) Ag-108m (10) 1.7E 0 03 2.5E 0 -4.6E 0 (0) ( -7.4 - 49.9)E -1 ( 5.1 - 49.9)E -1 ( -1.1 - 0.0)E 1 (0/ 7) (0/ 5) (0/ 3) Ag-110m (10) -2.9E 0 53 4.0E 0 4.0E 0 (0) ( -3.9 - 0.9)E 1 ( -4.0 - 10.0)E 0 ( -4.0 - 10.0)E 0 (0/ 7) (0/ 3) (0/ 3) Sb-124 (10) 2.7E 0 53 8.7E 0 8.7E 0 (0) ( -5.9 - 28.4)E 0 ( 1.0 - 19.6)E 0 ( 1.0 - 19.6)E 0 (0/ 7) (0/ 3) (0/ 3) Sb-125 (10) -1.0E 0 06 9.0E 0 -4.4E 0 (0) ( -1.1 - 1.8)E 1 ( -2.3 - 182.0)E -1 ( -9.8 - -1.0)E 0 (0/ 7) (0/ 2) (0/ 3) I-131 (10) 1.1E 1 53 1.6E 1 1.6E 1 (0) ( -1.6 - 5.2)E 1 ( -4.2 - 32.2)E 0 ( -4.2 - 32.2)E 0 (0/ 7) (0/ 3) (0/ 3) Cs-134 (10) 130 3.6E -1 03 7.7E -1 -3.1E 0 (0) ( -3.8 - 3.9)E 0 ( -3.8 - 3.9)E 0 ( -1.6 - 0.7)E 1 (0/ 7) (0/ 5) (0/ 3) Cs-137 (10) 150 3.0E 0 06 3.6E 0 3.1E 0 (0) ( -3.3 - 5.8)E 0 ( 2.8 - 4.5)E 0 ( 1.8 - 3.8)E 0 (0/ 7) (0/ 2) (0/ 3) Ba-140 (10) -2.6E 1 53 4.8E 1 4.8E 1 (0) ( -7.9 - 0.8)E 1 ( 8.5 - 75.2)E 0 ( 8.5 - 75.2)E 0 (0/ 7) (0/ 3) (0/ 3) La-140 (10) 1.4E 0 53 1.1E 1 1.1E 1 (0) ( -1.5 - 1.9)E 1 ( -1.3 - 23.9)E 0 ( -1.3 - 23.9)E 0 (0/ 7) (0/ 3) (0/ 3) Ce-141 (10) -6.2E 0 06 -2.6E 0 -1.6E 1 (0) ( -1.4 - 0.6)E 1 ( -1.1 - 0.6)E 1 ( -4.3 - -0.2)E 1 (0/ 7) (0/ 2) (0/ 3) Ce-144 (10) 7.6E 0 06 4.5E 1 -1.4E 1 (0) ( -3.1 - 9.1)E 1 ( 0.0 - 9.1)E 1 ( -4.4 - 1.6)E 1 (0/ 7) (0/ 2) (0/ 3) Tl-208 (10) -9.4E -1 06 1.3E 1 -3.6E 0 (0) ( -2.4 - 2.5)E 1 ( 2.3 - 24.7)E 0 ( -1.1 - 0.0)E 1 (0/ 7) (0/ 2) (0/ 3)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.7-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Fish (FH) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Pb-212 (10) 8.7E -1 03 7.6E 0 -3.4E 0 (0) ( -3.4 - 4.1)E 1 ( -3.8 - 41.1)E 0 ( -1.1 - 1.0)E 1 (0/ 7) (0/ 5) (0/ 3) Pb-214 (10) 3.0E 0 03 6.1E 0 2.3E 0 (0) ( -2.1 - 1.2)E 1 ( -1.5 - 11.8)E 0 ( -6.8 - 8.0)E 0 (0/ 7) (0/ 5) (0/ 3) Bi-214 (10) 8.4E 0 53 1.4E 1 1.4E 1 (0) ( -9.0 - 165.0)E -1 ( 5.5 - 26.6)E 0 ( 5.5 - 26.6)E 0 (0/ 7) (0/ 3) (0/ 3) Ra-226 (10) 8.4E 0 53 1.4E 1 1.4E 1 (0) ( -9.0 - 165.0)E -1 ( 5.5 - 26.6)E 0 ( 5.5 - 26.6)E 0 (0/ 7) (0/ 3) (0/ 3) Ac-228 (10) 4.3E 0 03 1.2E 1 1.0E 1 (0) ( -4.4 - 5.8)E 1 ( -3.4 - 5.8)E 1 ( 7.8 - 239.0)E -1 (0/ 7) (0/ 5) (0/ 3) Th-228 (10) 8.7E -1 03 7.6E 0 -3.4E 0 (0) ( -3.4 - 4.1)E 1 ( -3.8 - 41.1)E 0 ( -1.1 - 1.0)E 1 (0/ 7) (0/ 5) (0/ 3) Th-230 (10) 8.4E 0 53 1.4E 1 1.4E 1 (0) ( -9.0 - 165.0)E -1 ( 5.5 - 26.6)E 0 ( 5.5 - 26.6)E 0 (0/ 7) (0/ 3) (0/ 3)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

3.8 Lobsters Semiannual fish and in vertebrate samples were required from two locations. This section provides the results for one type of in vertebrate - Homarus americanus (American lobsters) which is an important commercial food species from local waters

. Lobsters (HA) were collected from an indicator location near the discharge (HA-04) and from a control location (HA-54) within Ipswich Bay. A total of four samples were collected for the year. Fish and shellfish results may be found in Sections 3.7 and 3.9, respectively.

A gamma analysis was performed on each sample. The only radionuclide detected in lobster samples in 2018 was naturally-occurring K-40 (all samples)

. Similar to past years, n o plant-related radionuclides were detected in any sample. Therefore, no increasing or decreasing trends were obser ved. Consequently, there is no dose to the public or impact to the environment from this pathway due to plant operations. This is consistent with previous years as well as the pre-operational program.

The REMP Summary Table 3.8

-1 also lists the range of analysis results by radionuclide for Indicator and Control Stations for all lobster samples. Attachment 1 to this report list s the individual analysis results for each measurement of lobsters under the Sample Type code HA.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations that may ha ve occurred during the year are described in Section

5.

Table 3.8-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: American Lobster (HA) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Be-7 (4) -2.8E 1 54 9.8E 0 9.8E 0 (0) ( -6.3 - 0.6)E 1 ( -1.9 - 21.6)E 0 ( -1.9 - 21.6)E 0 (0/ 2) (0/ 2) (0/ 2) K-40 (4) 2.1E 3 54 2.5E 3 2.5E 3 (0) ( 2.0 - 2.2)E 3 ( 2.4 - 2.5)E 3 ( 2.4 - 2.5)E 3 (2/ 2) (2/ 2) (2/ 2) Cr-51 (4) 1.1E 1 04 1.1E 1 9.1E 0 (0) ( -8.5 - 29.9)E 0 ( -8.5 - 29.9)E 0 ( -3.6 - 5.4)E 1 (0/ 2) (0/ 2) (0/ 2) Mn-54 (4) 130 6.1E 0 04 6.1E 0 2.3E 0 (0) ( 5.1 - 7.1)E 0 ( 5.1 - 7.1)E 0 ( 2.4 - 44.4)E -1 (0/ 2) (0/ 2) (0/ 2) Co-57 (4) 1.0E 0 04 1.0E 0 -4.2E -1 (0) ( 4.0 - 16.7)E -1 ( 4.0 - 16.7)E -1 ( -2.4 - 1.6)E 0 (0/ 2) (0/ 2) (0/ 2) Co-58 (4) 130 -1.9E 0 04 -1.9E 0 -3.6E 0 (0) ( -5.0 - 1.3)E 0 ( -5.0 - 1.3)E 0 ( -3.7 - -3.5)E 0 (0/ 2) (0/ 2) (0/ 2) Fe-59 (4) 260 -5.0E 0 54 1.2E 1 1.2E 1 (0) ( -6.8 - -3.1)E 0 ( 3.8 - 19.7)E 0 ( 3.8 - 19.7)E 0 (0/ 2) (0/ 2) (0/ 2) Co-60 (4) 130 3.0E 0 04 3.0E 0 -4.2E -1 (0) ( -1.2 - 60.7)E -1 ( -1.2 - 60.7)E -1 ( -2.3 - 1.5)E 0 (0/ 2) (0/ 2) (0/ 2) Zn-65 (4) 260 0.0E 0 54 1.3E 1 1.3E 1 (0) ( 0.0 - 0.0)E 0 ( 4.9 - 21.1)E 0 ( 4.9 - 21.1)E 0 (0/ 2) (0/ 2) (0/ 2) Se-75 (4) 1.8E 0 04 1.8E 0 -4.1E 0 (0) ( -7.2 - 10.8)E 0 ( -7.2 - 10.8)E 0 ( -5.3 - -2.9)E 0 (0/ 2) (0/ 2) (0/ 2) Nb-95 (4) 1.2E 0 04 1.2E 0 8.9E -1 (0) ( 8.3 - 15.7)E -1 ( 8.3 - 15.7)E -1 ( -2.8 - 4.5)E 0 (0/ 2) (0/ 2) (0/ 2) Zr-95 (4) 7.4E 0 04 7.4E 0 3.7E 0 (0) ( 3.2 - 11.5)E 0 ( 3.2 - 11.5)E 0 ( 2.1 - 72.8)E -1 (0/ 2) (0/ 2) (0/ 2) Ru-103 (4) -2.4E 0 54 2.6E 0 2.6E 0 (0) ( -4.8 - 0.0)E 0 ( -1.3 - 6.6)E 0 ( -1.3 - 6.6)E 0 (0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.8-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: American Lobster (HA) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ru-106 (4) -3.0E 1 54 -1.4E 0 -1.4E 0 (0) ( -3.8 - -2.3)E 1 ( -4.7 - 4.4)E 1 ( -4.7 - 4.4)E 1 (0/ 2) (0/ 2) (0/ 2) Ag-108m (4) 2.5E 0 04 2.5E 0 1.6E 0 (0) ( 1.7 - 3.3)E 0 ( 1.7 - 3.3)E 0 ( 1.4 - 1.9)E 0 (0/ 2) (0/ 2) (0/ 2) Ag-110m (4) 6.9E -1 04 6.9E -1 -3.8E -1 (0) ( -1.1 - 2.4)E 0 ( -1.1 - 2.4)E 0 ( -7.7 - 6.9)E 0 (0/ 2) (0/ 2) (0/ 2) Sb-124 (4) 5.6E 0 04 5.6E 0 4.9E 0 (0) ( 6.7 - 106.0)E -1 ( 6.7 - 106.0)E -1 ( 4.4 - 5.4)E 0 (0/ 2) (0/ 2) (0/ 2) Sb-125 (4) 2.7E 0 04 2.7E 0 -1.6E 0 (0) ( -4.4 - 58.7)E -1 ( -4.4 - 58.7)E -1 ( -6.0 - 2.9)E 0 (0/ 2) (0/ 2) (0/ 2) I-131 (4) -4.6E 0 54 2.7E 1 2.7E 1 (0) ( -2.1 - 1.2)E 1 ( 0.0 - 5.4)E 1 ( 0.0 - 5.4)E 1 (0/ 2) (0/ 2) (0/ 2) Cs-134 (4) 130 2.0E 0 04 2.0E 0 -1.1E 0 (0) ( -2.1 - 6.0)E 0 ( -2.1 - 6.0)E 0 ( -4.4 - 2.2)E 0 (0/ 2) (0/ 2) (0/ 2) Cs-137 (4) 150 8.4E 0 04 8.4E 0 9.5E -1 (0) ( 4.0 - 12.9)E 0 ( 4.0 - 12.9)E 0 ( -1.9 - 3.8)E 0 (0/ 2) (0/ 2) (0/ 2) Ba-140 (4) 3.1E 0 04 3.1E 0 -8.9E 0 (0) ( -3.3 - 3.9)E 1 ( -3.3 - 3.9)E 1 ( -2.0 - 0.2)E 1 (0/ 2) (0/ 2) (0/ 2) La-140 (4) -8.0E 0 54 -6.9E 0 -6.9E 0 (0) ( -2.3 - 0.7)E 1 ( -1.1 - -0.3)E 1 ( -1.1 - -0.3)E 1 (0/ 2) (0/ 2) (0/ 2) Ce-141 (4) -9.8E 0 54 -8.6E 0 -8.6E 0 (0) ( -1.2 - -0.8)E 1 ( -1.6 - -0.1)E 1 ( -1.6 - -0.1)E 1 (0/ 2) (0/ 2) (0/ 2) Ce-144 (4) 1.5E 1 04 1.5E 1 -9.7E 0 (0) ( 0.0 - 3.0)E 1 ( 0.0 - 3.0)E 1 ( -1.6 - -0.4)E 1 (0/ 2) (0/ 2) (0/ 2) Tl-208 (4) -3.3E 0 54 1.8E 0 1.8E 0 (0) ( -4.7 - -1.9)E 0 ( 0.0 - 3.6)E 0 ( 0.0 - 3.6)E 0 (0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.8-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: American Lobster (HA) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Pb-212 (4) 5.6E 0 04 5.6E 0 -6.6E -1 (0) ( 4.6 - 6.6)E 0 ( 4.6 - 6.6)E 0 ( -1.0 - 0.9)E 1 (0/ 2) (0/ 2) (0/ 2) Pb-214 (4) 7.9E 0 04 7.9E 0 3.4E 0 (0) ( 0.0 - 1.6)E 1 ( 0.0 - 1.6)E 1 ( -1.7 - 8.6)E 0 (0/ 2) (0/ 2) (0/ 2) Bi-214 (4) -5.4E 0 54 8.0E -1 8.0E -1 (0) ( -1.6 - 0.5)E 1 ( -1.2 - 1.4)E 1 ( -1.2 - 1.4)E 1 (0/ 2) (0/ 2) (0/ 2) Ra-226 (4) -5.4E 0 54 8.0E -1 8.0E -1 (0) ( -1.6 - 0.5)E 1 ( -1.2 - 1.4)E 1 ( -1.2 - 1.4)E 1 (0/ 2) (0/ 2) (0/ 2) Ac-228 (4) -2.0E -1 54 3.9E 1 3.9E 1 (0) ( -1.6 - 1.6)E 1 ( 7.3 - 71.1)E 0 ( 7.3 - 71.1)E 0 (0/ 2) (0/ 2) (0/ 2) Th-228 (4) 5.6E 0 04 5.6E 0 -6.6E -1 (0) ( 4.6 - 6.6)E 0 ( 4.6 - 6.6)E 0 ( -1.0 - 0.9)E 1 (0/ 2) (0/ 2) (0/ 2) Th-230 (4) -5.4E 0 54 8.0E -1 8.0E -1 (0) ( -1.6 - 0.5)E 1 ( -1.2 - 1.4)E 1 ( -1.2 - 1.4)E 1 (0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

3.9 Shellfish Semiannual fish and in vertebrate samples are required by the ODCM from two locations. This section provides the results for shellfish (MU) samples only. In 2018, four locations (two indicators and two controls) were included in the sample collections. Fish and lobster results may be found in the Sections 3.7 and 3.8, entitled Fish and Lobsters, respectively.

During the year there were two species of mussels (MU) har vested for analysis. Modiolus (horse mussels) was collected by di ve rs from near the discharge outfall (indicator station MU-06) and from Ipswich Bay (control MU-56). Mytilus (blue mussels) were collected from the intertidal areas of Hampton Harbor (indicator MU-09) and Plum Island (control MU-59). A total of eight samples were collected in 2018 and analyzed for radioactivity in the edible portion or meat of the shellfish.

The only radionuclide s detected in edible shellfish body samples in 2018 were naturally-occurring Be-7 (1 out of 8 samples), K-40 (all 8 samples) and nuclides of the Uranium

-238 decay chain (Th

-230, Ra-226) and the Thorium-232 decay chain (Th

-228, Pb-212, and Tl

-208). Similar to past years, no plant

-related gamma emitting radionuclides were detected in any sample. Therefore, no increasing or decreasing trends were observed. Consequently, there is no dose to the public or impact to the environment from this pathway due to plant operations. This is consistent with the pre

-operational program and with previous years of plant operations.

Additional an alyses were conducted on the Ma y and November shellfish collections from both indic ator (MS-06) and control (MS

-56) locations. Mussel shells (MS) were analyzed for Strontium 89 and 90 (four samples) to see if there was any indication of strontium uptake into the shell. For 2018, no Sr-89/90 was detected in any sample. No shell analyses are required by the REMP as defined in the ODCM

. The REMP Summary Table 3.9

-1 (mussel bodies) and Table 3.9

-2 (mussel shells) list the range of analysis results by radionuclide for Indicator and Control Stations for all shellfish samples. Attachment 1 to this report list s the individual analysis results for each measurement of shellfish under the Sample Type code MU for the edible portions and MS for shells only

. Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations th at may ha ve occurred during the year

, are described in Section

5.

Table 3.9-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Mussel Body (MU)

UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Be-7 (8) 3.1E 1 59 9.7E 1 5.7E 1 (0) ( 0.0 - 7.0)E 1 ( 9.0 - 10.3)E 1 ( 0.0 - 1.0)E 2 (0/ 4) (1/ 2) (1/ 4) K-40 (8) 1.1E 3 59 1.4E 3 1.3E 3 (0) ( 8.9 - 13.7)E 2 ( 1.4 - 1.5)E 3 ( 1.1 - 1.5)E 3 (4/ 4) (2/ 2) (4/ 4) Cr-51 (8) 1.1E 1 09 2.6E 1 6.4E -1 (0) ( -7.4 - 45.4)E 0 ( 6.2 - 45.4)E 0 ( -8.7 - 11.6)E 0 (0/ 4) (0/ 2) (0/ 4) Mn-54 (8) 130 5.2E -1 09 7.3E -1 -1.9E 0 (0) ( -2.0 - 2.7)E 0 ( 5.8 - 8.8)E -1 ( -3.7 - 1.3)E 0 (0/ 4) (0/ 2) (0/ 4) Co-57 (8) 8.9E -1 06 2.1E 0 8.4E -1 (0) ( -1.6 - 2.8)E 0 ( 1.4 - 2.8)E 0 ( -5.1 - 37.1)E -1 (0/ 4) (0/ 2) (0/ 4) Co-58 (8) 130 -5.9E -1 56 5.9E -1 -1.4E 0 (0) ( -3.3 - 1.5)E 0 ( -1.4 - 2.6)E 0 ( -3.7 - 2.6)E 0 (0/ 4) (0/ 2) (0/ 4) Fe-59 (8) 260 -2.4E 0 56 7.6E 0 5.5E 0 (0) ( -4.5 - 1.5)E 0 ( 7.5 - 7.8)E 0 ( 5.7 - 77.5)E -1 (0/ 4) (0/ 2) (0/ 4) Co-60 (8) 130 2.1E 0 09 3.9E 0 1.9E 0 (0) ( -1.9 - 9.6)E 0 ( -1.9 - 9.6)E 0 ( -1.9 - 5.2)E 0 (0/ 4) (0/ 2) (0/ 4) Zn-65 (8) 260 1.6E 0 06 2.4E 0 -5.3E -1 (0) ( -5.3 - 10.2)E 0 ( -5.3 - 10.2)E 0 ( -3.5 - 5.3)E 0 (0/ 4) (0/ 2) (0/ 4) Se-75 (8) 7.9E -1 06 1.8E 0 5.3E -2 (0) ( -1.5 - 2.5)E 0 ( 1.1 - 2.5)E 0 ( -2.8 - 5.4)E 0 (0/ 4) (0/ 2) (0/ 4) Nb-95 (8) 4.4E 0 06 4.9E 0 -3.0E -1 (0) ( 1.0 - 6.8)E 0 ( 3.4 - 6.3)E 0 ( -3.9 - 2.5)E 0 (0/ 4) (0/ 2) (0/ 4) Zr-95 (8) 5.0E 0 06 1.0E 1 2.3E 0 (0) ( -1.3 - 16.0)E 0 ( 4.9 - 16.0)E 0 ( -1.3 - 5.0)E 0 (0/ 4) (0/ 2) (0/ 4) Ru-103 (8) 9.8E -1 09 1.7E 0 -4.5E -1 (0) ( -2.9 - 6.0)E 0 ( -2.6 - 6.0)E 0 ( -2.2 - 1.4)E 0 (0/ 4) (0/ 2) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.9-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Mussel Body (MU) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ru-106 (8) 9.4E 0 09 2.7E 1 -6.6E 0 (0) ( -1.4 - 3.3)E 1 ( 2.1 - 3.3)E 1 ( -3.3 - 3.1)E 1 (0/ 4) (0/ 2) (0/ 4) Ag-108m (8) 1.9E 0 59 3.1E 0 9.3E -1 (0) ( -2.1 - 6.5)E 0 ( 2.6 - 3.6)E 0 ( -2.0 - 3.6)E 0 (0/ 4) (0/ 2) (0/ 4) Ag-110m (8) -2.2E 0 59 1.2E 0 9.1E -1 (0) ( -5.6 - 0.6)E 0 ( 1.0 - 1.3)E 0 ( -2.0 - 14.9)E -1 (0/ 4) (0/ 2) (0/ 4) Sb-124 (8) 3.5E 0 59 6.2E 0 -1.5E -1 (0) ( -9.2 - 118.0)E -1 ( 1.6 - 10.8)E 0 ( -1.3 - 1.1)E 1 (0/ 4) (0/ 2) (0/ 4) Sb-125 (8) 8.0E 0 06 9.0E 0 -4.4E 0 (0) ( -4.9 - 18.7)E 0 ( 2.8 - 15.2)E 0 ( -1.0 - -0.2)E 1 (0/ 4) (0/ 2) (0/ 4) I-131 (8) 3.8E -1 56 3.4E 0 -2.4E 0 (0) ( -1.1 - 1.3)E 1 ( -2.6 - 9.3)E 0 ( -1.8 - 0.9)E 1 (0/ 4) (0/ 2) (0/ 4) Cs-134 (8) 130 -2.2E 0 59 2.3E 0 1.8E 0 (0) ( -4.6 - 1.5)E 0 ( 4.8 - 40.5)E -1 ( 2.8 - 40.5)E -1 (0/ 4) (0/ 2) (0/ 4) Cs-137 (8) 150 1.1E -1 09 2.9E -1 -1.4E 0 (0) ( -1.0 - 1.2)E 0 ( -6.4 - 12.2)E -1 ( -4.6 - 0.8)E 0 (0/ 4) (0/ 2) (0/ 4) Ba-140 (8) 1.0E 1 06 2.1E 1 -5.9E 0 (0) ( -3.3 - 20.7)E 0 ( 2.0 - 2.1)E 1 ( -2.2 - 0.8)E 1 (0/ 4) (0/ 2) (0/ 4) La-140 (8) -7.5E 0 56 2.8E 0 1.4E 0 (0) ( -1.3 - -0.2)E 1 ( 2.5 - 3.0)E 0 ( -4.4 - 4.6)E 0 (0/ 4) (0/ 2) (0/ 4) Ce-141 (8) 1.7E 0 06 2.4E 0 -1.6E 0 (0) ( -2.6 - 7.3)E 0 ( -2.6 - 7.3)E 0 ( -4.2 - 1.6)E 0 (0/ 4) (0/ 2) (0/ 4) Ce-144 (8) -5.7E 0 59 6.5E 0 1.2E 0 (0) ( -1.9 - 1.4)E 1 ( 4.8 - 8.2)E 0 ( -1.3 - 0.8)E 1 (0/ 4) (0/ 2) (0/ 4) Tl-208 (8) 3.0E 0 09 4.0E 0 2.6E 0 (0) ( -3.3 - 11.3)E 0 ( -3.3 - 11.3)E 0 ( -2.1 - 38.5)E -1 (1/ 4) (1/ 2) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.9-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Mussel Body (MU) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Pb-212 (8) 7.7E 0 56 9.8E 0 6.8E 0 (0) ( 1.3 - 15.1)E 0 ( 5.7 - 13.9)E 0 ( -1.7 - 13.9)E 0 (1/ 4) (0/ 2) (0/ 4) Pb-214 (8) 7.8E 0 09 9.2E 0 6.7E 0 (0) ( -5.5 - 23.9)E 0 ( -5.5 - 23.9)E 0 ( 3.0 - 11.0)E 0 (0/ 4) (0/ 2) (0/ 4) Bi-214 (8) 2.1E 1 09 3.1E 1 1.1E 1 (0) ( 9.4 - 45.0)E 0 ( 1.7 - 4.5)E 1 ( 0.0 - 2.2)E 1 (0/ 4) (0/ 2) (0/ 4) Ra-226 (8) 2.1E 1 09 3.1E 1 1.1E 1 (0) ( 9.4 - 45.0)E 0 ( 1.7 - 4.5)E 1 ( 0.0 - 2.2)E 1 (1/ 4) (1/ 2) (0/ 4) Ac-228 (8) -5.7E 0 06 5.2E 0 -8.9E -1 (0) ( -1.9 - 1.3)E 1 ( -2.4 - 12.8)E 0 ( -1.4 - 0.8)E 1 (0/ 4) (0/ 2) (0/ 4) Th-228 (8) 7.7E 0 56 9.8E 0 6.8E 0 (0) ( 1.3 - 15.1)E 0 ( 5.7 - 13.9)E 0 ( -1.7 - 13.9)E 0 (1/ 4) (0/ 2) (0/ 4) Th-230 (8) 2.1E 1 09 3.1E 1 1.1E 1 (0) ( 9.4 - 45.0)E 0 ( 1.7 - 4.5)E 1 ( 0.0 - 2.2)E 1 (1/ 4) (1/ 2) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.9-2 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Mussel Shell (MS) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Sr-89 (4) -5.9E 1 56 -4.2E 1 -4.2E 1 (0) ( -1.3 - 0.1)E 2 ( -6.4 - -2.1)E 1 ( -6.4 - -2.1)E 1 (0/ 2) (0/ 2) (0/ 2) Sr-90 (4) -2.4E 1 56 2.9E 1 2.9E 1 (0) ( -4.5 - -0.2)E 1 ( -1.8 - 7.6)E 1 ( -1.8 - 7.6)E 1 (0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

3.10 Irish Moss There is no REMP technical requirement defined in the ODCM to collect Irish Moss (algae) samples. As a supplement to the required REMP, semiannual Chondrus (Irish Moss) samples were collected from an indicator area (AL-05) near the plant discharge and a control location (AL-55) within Ipswich Bay. If plant-related radionuclides were re-concentrating in the aquatic environment, an early indication of this might be shown in this type of environmental species. Four routine samples (two indicator s and two controls) were collected for the year. A gamma analysis was performed on each sample. Although not required by Table 5.2-1, the LLDs associated with food products were applied to ensure adequate counting statistics. Naturally-occurring K-40 was detected in all samples and Be-7 was detected in two of the four samples

. For the off

-shore indicator station (AL

-05), n o plant-related radionuclides were detected in any sample. Therefore, no plant-related increasing or decreasing trends were observed. Subsequently, there is no dose or impact to the environment from plant operations. This is consistent with the pre-operational program and previous years of plant operations.

The REMP Summary Table 3.10

-1 list s the range of analysis results by radionuclide for Indicator and Control Stations for Irish Moss samples. Attachment 1 list s the individual analysis results for each measurement of Irish moss under the Sample Type code AL.

Any sample collection and analysis deviations from the ODCM defined program, or reportabl e concentrations that may ha ve occurred during the year

, are described in Section

5.

Table 3.10

-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Irish Moss (AL) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Be-7 (4) 1.8E 2 55 6.8E 2 6.8E 2 (0) ( 1.3 - 2.2)E 2 ( 0.0 - 1.4)E 3 ( 0.0 - 1.4)E 3 (1/ 2) (1/ 2) (1/ 2) K-40 (4) 9.4E 3 05 9.4E 3 7.6E 3 (0) ( 8.6 - 10.2)E 3 ( 8.6 - 10.2)E 3 ( 6.2 - 9.0)E 3 (2/ 2) (2/ 2) (2/ 2) Cr-51 (4) -2.1E 1 55 4.4E 1 4.4E 1 (0) ( -3.2 - -0.9)E 1 ( -1.0 - 9.8)E 1 ( -1.0 - 9.8)E 1 (0/ 2) (0/ 2) (0/ 2) Mn-54 (4) -5.2E 0 55 2.5E 0 2.5E 0 (0) ( -1.0 - 0.0)E 1 ( -1.8 - 6.7)E 0 ( -1.8 - 6.7)E 0 (0/ 2) (0/ 2) (0/ 2) Co-57 (4) -1.1E 0 55 3.4E -1 3.4E -1 (0) ( -1.3 - -0.9)E 0 ( -7.1 - 13.9)E -1 ( -7.1 - 13.9)E -1 (0/ 2) (0/ 2) (0/ 2) Co-58 (4) -1.8E 0 55 3.7E 0 3.7E 0 (0) ( -3.3 - -0.4)E 0 ( 3.0 - 4.5)E 0 ( 3.0 - 4.5)E 0 (0/ 2) (0/ 2) (0/ 2) Fe-59 (4) 8.8E 0 55 2.2E 1 2.2E 1 (0) ( 3.0 - 14.6)E 0 ( 2.5 - 441.0)E -1 ( 2.5 - 441.0)E -1 (0/ 2) (0/ 2) (0/ 2) Co-60 (4) 1.5E 0 55 3.4E 0 3.4E 0 (0) ( 2.7 - 27.8)E -1 ( 1.3 - 5.4)E 0 ( 1.3 - 5.4)E 0 (0/ 2) (0/ 2) (0/ 2) Zn-65 (4) 6.3E 0 05 6.3E 0 -9.6E 0 (0) ( -5.0 - 17.6)E 0 ( -5.0 - 17.6)E 0 ( -2.2 - 0.2)E 1 (0/ 2) (0/ 2) (0/ 2) Se-75 (4) -8.3E -1 05 -8.3E -1 -7.5E 0 (0) ( -4.3 - 2.7)E 0 ( -4.3 - 2.7)E 0 ( -7.9 - -7.0)E 0 (0/ 2) (0/ 2) (0/ 2) Nb-95 (4) 8.1E -1 55 8.9E -1 8.9E -1 (0) ( -1.4 - 3.0)E 0 ( 4.8 - 13.1)E -1 ( 4.8 - 13.1)E -1 (0/ 2) (0/ 2) (0/ 2) Zr-95 (4) -2.5E 0 55 7.5E 0 7.5E 0 (0) ( -6.4 - 1.5)E 0 ( 7.0 - 8.0)E 0 ( 7.0 - 8.0)E 0 (0/ 2) (0/ 2) (0/ 2) Ru-103 (4) -1.2E 0 05 -1.2E 0 -4.4E 0 (0) ( -1.6 - -0.8)E 0 ( -1.6 - -0.8)E 0 ( -1.1 - 0.2)E 1 (0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.10

-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Irish Moss (AL) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ru-106 (4) 9.0E 0 05 9.0E 0 -3.7E 1 (0) ( -8.7 - 26.7)E 0 ( -8.7 - 26.7)E 0 ( -8.6 - 1.2)E 1 (0/ 2) (0/ 2) (0/ 2) Ag-108m (4) -1.7E 0 55 2.7E 0 2.7E 0 (0) ( -2.7 - -0.7)E 0 ( 9.3 - 43.8)E -1 ( 9.3 - 43.8)E -1 (0/ 2) (0/ 2) (0/ 2) Ag-110m (4) -1.9E 0 05 -1.9E 0 -2.6E 0 (0) ( -3.1 - -0.7)E 0 ( -3.1 - -0.7)E 0 ( -5.3 - 0.2)E 0 (0/ 2) (0/ 2) (0/ 2) Sb-124 (4) -1.3E 0 05 -1.3E 0 -2.0E 0 (0) ( -2.0 - -0.5)E 0 ( -2.0 - -0.5)E 0 ( -1.1 - 0.7)E 1 (0/ 2) (0/ 2) (0/ 2) Sb-125 (4) -3.3E 0 05 -3.3E 0 -9.6E 0 (0) ( -1.0 - 0.4)E 1 ( -1.0 - 0.4)E 1 ( -1.3 - -0.7)E 1 (0/ 2) (0/ 2) (0/ 2) I-131 (4) 60 1.3E 1 05 1.3E 1 9.3E 0 (0) ( 1.0 - 1.6)E 1 ( 1.0 - 1.6)E 1 ( -1.3 - 20.0)E 0 (0/ 2) (0/ 2) (0/ 2) Cs-134 (4) 60 7.4E 0 05 7.4E 0 1.3E 0 (0) ( 4.2 - 10.6)E 0 ( 4.2 - 10.6)E 0 ( -6.8 - 33.4)E -1 (0/ 2) (0/ 2) (0/ 2) Cs-137 (4) 80 5.4E -1 55 4.5E 0 4.5E 0 (0) ( -7.9 - 18.7)E -1 ( 3.0 - 6.1)E 0 ( 3.0 - 6.1)E 0 (0/ 2) (0/ 2) (0/ 2) Ba-140 (4) 1.4E 1 05 1.4E 1 -1.2E 1 (0) ( 0.0 - 2.8)E 1 ( 0.0 - 2.8)E 1 ( -1.8 - -0.5)E 1 (0/ 2) (0/ 2) (0/ 2) La-140 (4) -1.3E 1 05 -1.3E 1 -1.4E 1 (0) ( -2.3 - -0.4)E 1 ( -2.3 - -0.4)E 1 ( -2.6 - -0.2)E 1 (0/ 2) (0/ 2) (0/ 2) Ce-141 (4) -2.0E 1 55 -1.1E 1 -1.1E 1 (0) ( -2.2 - -1.9)E 1 ( -2.0 - -0.1)E 1 ( -2.0 - -0.1)E 1 (0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.10

-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Irish Moss (AL) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ce-144 (4) -1.3E 1 55 -3.5E 0 -3.5E 0 (0) ( -1.3 - -1.3)E 1 ( -9.8 - 2.9)E 0 ( -9.8 - 2.9)E 0 (0/ 2) (0/ 2) (0/ 2) Ac-228 (4) 4.1E 1 05 4.1E 1 -9.4E 0 (0) ( 2.2 - 80.3)E 0 ( 2.2 - 80.3)E 0 ( -2.4 - 0.5)E 1 (0/ 2) (0/ 2) (0/ 2) Th-228 (4) 2.4E 1 05 2.4E 1 0.0E 0 (0) ( 4.2 - 44.1)E 0 ( 4.2 - 44.1)E 0 ( 0.0 - 0.0)E 0 (0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

3.11 Food Crop There is no requirement for food crop or vegetation samples as long as the required milk locations are available. As noted in Section 3.3, milk sampling at the minimum required number of locations in 2018 was not possible due to the limited in ventory of milk animal sites in the plant vicinity. To compensate for this, vegetation sample s were collected as part of the REMP. Section 3.12 describes the alternate broad leafy vegetation (TG) collections.

In addition to the broad leafy vegetation sampling, nine food crop (TF) samples were collected from three locations listed on Table 2.

0-2 (two indicator station s , TF-02 and TF-03, and one control station

, TF-06) during the growing season months (June, July and August). These include d strawberries in June and July (Lab number s 453142001, 2, & 3 and 455089001, 2 &3) and tomatoes in August (Lab number s 457581001, 2, & 3). A gamma analysis was performed on each sample. Naturally-occurring K-40 was detected in all samples for both indicator and control stations and naturally

-occurring Be

-7 was detected in two out of the nine samples. Similar to past years, n o plant-related radionuclides were detected in any samples. Therefore, no increasing or decreasing trends are identified. Subsequently, there is no dose to the public or impact on the environment through this pathway due to plant operations. This is consistent with the pre

-operational program and with previous years of plant operations.

The following REMP Summary (Table 3.11

-1) list s the range of analysis results by radionuclide for i ndicator and control stations for the Food Crop environmental media. Attachment 1 to this report list s the individual analysis results for each measurement of Food Crops under the Sample Type code TF.

Any sample collection and analysis deviations from the ODCM defined program, or reportable concentrations that may have occurred during the year, are described in Section 5.

Table 3.11

-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Food Crop (TF) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Be-7 (9) 3.4E 1 06 6.9E 1 6.9E 1 (0) ( 7.0 - 66.1)E 0 ( -1.4 - 14.5)E 1 ( -1.4 - 14.5)E 1 (0/ 6) (2/ 3) (2/ 3) K-40 (9) 2.1E 3 03 2.2E 3 1.9E 3 (0) ( 1.6 - 2.8)E 3 ( 1.6 - 2.6)E 3 ( 1.2 - 2.7)E 3 (6/ 6) (3/ 3) (3/ 3) Cr-51 (9) 1.7E 0 06 1.7E 1 1.7E 1 (0) ( -2.1 - 1.9)E 1 ( 1.2 - 2.7)E 1 ( 1.2 - 2.7)E 1 (0/ 6) (0/ 3) (0/ 3) Mn-54 (9) 3.1E 0 02 5.1E 0 -1.0E 0 (0) ( -6.1 - 72.4)E -1 ( 1.1 - 7.2)E 0 ( -2.8 - 0.2)E 0 (0/ 6) (0/ 3) (0/ 3) Co-57 (9) -2.6E -1 02 1.1E 0 -9.2E -2 (0) ( -3.4 - 1.5)E 0 ( 2.4 - 15.0)E -1 ( -1.2 - 1.2)E 0 (0/ 6) (0/ 3) (0/ 3) Co-58 (9) -2.4E -1 06 8.1E -1 8.1E -1 (0) ( -2.4 - 4.3)E 0 ( -2.7 - 21.6)E -1 ( -2.7 - 21.6)E -1 (0/ 6) (0/ 3) (0/ 3) Fe-59 (9) -5.8E -2 02 2.0E 0 1.2E 0 (0) ( -9.9 - 11.6)E 0 ( -4.3 - 11.6)E 0 ( -1.6 - 315.0)E -2 (0/ 6) (0/ 3) (0/ 3) Co-60 (9) -3.8E -1 06 1.1E 0 1.1E 0 (0) ( -2.7 - 1.8)E 0 ( -1.7 - 2.7)E 0 ( -1.7 - 2.7)E 0 (0/ 6) (0/ 3) (0/ 3) Zn-65 (9) -7.4E -1 06 3.0E 0 3.0E 0 (0) ( -4.1 - 4.7)E 0 ( -7.9 - 89.4)E -1 ( -7.9 - 89.4)E -1 (0/ 6) (0/ 3) (0/ 3) Se-75 (9) -1.3E 0 06 1.2E -2 1.2E -2 (0) ( -3.8 - 1.8)E 0 ( -2.2 - 1.3)E 0 ( -2.2 - 1.3)E 0 (0/ 6) (0/ 3) (0/ 3) Nb-95 (9) -1.1E 0 06 1.3E 0 1.3E 0 (0) ( -3.9 - 1.7)E 0 ( 9.6 - 18.9)E -1 ( 9.6 - 18.9)E -1 (0/ 6) (0/ 3) (0/ 3) Zr-95 (9) 4.4E -1 03 3.4E 0 1.9E 0 (0) ( -3.7 - 11.4)E 0 ( -9.8 - 114.0)E -1 ( -3.5 - 4.6)E 0 (0/ 6) (0/ 3) (0/ 3) Ru-103 (9) 3.8E -1 02 1.0E 0 1.4E -1 (0) ( -2.7 - 1.4)E 0 ( 7.1 - 14.0)E -1 ( -4.0 - 9.1)E -1 (0/ 6) (0/ 3) (0/ 3)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.11

-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Food Crop (TF) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations ------------------------

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ru-106 (9) 7.5E 0 06 1.6E 1 1.6E 1 (0) ( -1.4 - 2.0)E 1 ( -4.4 - 33.9)E 0 ( -4.4 - 33.9)E 0 (0/ 6) (0/ 3) (0/ 3) Ag-108m (9) 2.4E -1 03 6.2E -1 -1.2E 0 (0) ( -4.0 - 15.8)E -1 ( -4.0 - 15.8)E -1 ( -1.8 - -0.6)E 0 (0/ 6) (0/ 3) (0/ 3) Ag-110m (9) 7.0E -3 02 1.1E -2 -8.0E -1 (0) ( -2.5 - 2.3)E 0 ( -1.9 - 1.9)E 0 ( -3.2 - 0.6)E 0 (0/ 6) (0/ 3) (0/ 3) Sb-124 (9) 1.0E -1 03 5.8E -1 -2.5E 0 (0) ( -6.1 - 6.3)E 0 ( -3.9 - 4.5)E 0 ( -1.2 - 0.3)E 1 (0/ 6) (0/ 3) (0/ 3) Sb-125 (9) -3.4E -1 03 -4.3E -2 -3.7E 0 (0) ( -8.3 - 12.5)E 0 ( -8.3 - 12.5)E 0 ( -6.7 - -1.9)E 0 (0/ 6) (0/ 3) (0/ 3) I-131 (9) 60 -2.7E 0 02 -1.1E 0 -1.5E 0 (0) ( -6.3 - 2.7)E 0 ( -5.0 - 2.7)E 0 ( -4.0 - 1.2)E 0 (0/ 6) (0/ 3) (0/ 3) Cs-134 (9) 60 2.7E -1 02 1.6E 0 -3.6E 0 (0) ( -2.4 - 5.0)E 0 ( -2.3 - 5.0)E 0 ( -5.9 - -0.2)E 0 (0/ 6) (0/ 3) (0/ 3) Cs-137 (9) 80 3.6E -2 06 1.8E 0 1.8E 0 (0) ( -5.9 - 2.4)E 0 ( -5.6 - 370.0)E -2 ( -5.6 - 370.0)E -2 (0/ 6) (0/ 3) (0/ 3) Ba-140 (9) 1.0E 1 02 2.1E 1 -2.4E 0 (0) ( -5.8 - 28.2)E 0 ( 9.1 - 28.2)E 0 ( -6.1 - -0.2)E 0 (0/ 6) (0/ 3) (0/ 3) La-140 (9) -6.3E -1 02 8.7E -1 -1.2E 0 (0) ( -4.0 - 4.1)E 0 ( -4.0 - 4.1)E 0 ( -3.3 - 0.7)E 0 (0/ 6) (0/ 3) (0/ 3) Ce-141 (9) -2.9E 0 06 -2.0E 0 -2.0E 0 (0) ( -1.4 - 0.3)E 1 ( -4.5 - 1.4)E 0 ( -4.5 - 1.4)E 0 (0/ 6) (0/ 3) (0/ 3) Ce-144 (9) 8.8E 0 02 1.0E 1 2.7E 0 (0) ( -2.7 - 22.8)E 0 ( 9.6 - 11.8)E 0 ( -5.4 - 15.3)E 0 (0/ 6) (0/ 3) (0/ 3) Ac-228 (9) 1.8E 0 03 3.9E 0 2.9E 0 (0) ( -2.0 - 3.3)E 1 ( -5.9 - 16.4)E 0 ( -4.6 - 16.8)E 0 (0/ 6) (0/ 3) (0/ 3) Th-228 (9) -1.7E 0 02 -4.8E -1 -3.6 E 0 (0) ( -1.7 - 0.6)E 1 ( -2.1 - 1.1)E 0 ( -4.7 - -2.6)E 0 (0/ 6) (0/ 3) (0/ 3)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

3.12 Vegetation In lieu of milk sampling, the ODCM, Table A.9.1

-1, requires that broad leafy vegetation (TG) samples grown in the nearest of two different offsite locations with the highest D/Q, and from one control location 15-30 km distant in the least prevalent wind direction, be collected when available (growing season). Offsite locations are defined in the UFSAR as the land bey ond a 3000-foot radius of the two Containment Building centerlines. The analysis of garden locations in the Land Use Census provides a ranking of potential sampling sites for use in determining sampling locations in the general population. Since sampling of broad leaf garden vegetables at high D/Q locations is not feasible due to uncertain availability, other types of broad leafy vegetation were utilized.

Two locations at the site boundary with a maximum D/Q (higher values than determined in the 2018 Land Use Census garden listing) were selected o ver ranked D/Q gardens in the general population. These two Indicator locations (TG-08 and TG-09) are on site property in areas with available sample media. A third far-field control location (TG-10) was selected in Georgetown, MA. Samples consisted of tree lea ve s , as broad leaf ve getation provide s increased reliability for sample availability. For 2018, a total of 18 monthly (growing season) broad leaf vegetation samples were collected and analyzed by gamma spectroscopy

. A gamma analysis was performed on each sample. Naturally-occurring K-40 and Be-7 were detected in all samples for both indicator and control stations. Naturally-occurring Ac-228/Th-228 was detected in 1 out of 18 samples.

Fission product related Cs

-137 was detected positive in 3 of the control samples from location TG

-10 at an average concentration of 187 pCi/kg. Cesium

-137 has been detected in broad leafy vegetation in past years at comparable activity levels as detected in 2018, and evaluated as to the source. The conclusion of the assessment was that world

-wide fallout from events un

-related to Seabrook operations, such as the March 11, 2011 Fukushima Daiichi accident in Japan and past atmospheric nuclear weapons testing, have led to Cs

-137 being deposited on the ground surface in the northeast United States with subsequent root uptake into leaves of long

-lived vegetation. This conclusion continues to be supported by the fact that Seabrook Station had no detectable Cs

-137 in any gaseous effluents in recent years, including 2018, and by the prevalence of detectable Cs

-137 at the control location compared to in

-close indicator sampling points. Utilizing the results of broad leaf vegetation sampling for broad leaf food products, it is concluded that there was no dose impact to the public or to the environment through this food ingestion pathway from Seabrook plant operations.

The following REMP Summary (Table 3.12

-1) list s the range of analysis results by radionuclide for indicator and control stations for the broad leaf vegetation environmental media. Attachment 1 to this report list s the individual analysis results for each measurement of broad leaf vegetation under the Sample Type code TG.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations that may ha ve occurred during the year

, are described in Section

5.

Table 3.12

-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Vegetation (TG) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LLD (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Be-7 (18) 1.4E 3 10 2.1E 3 2.1E 3 (0) ( 2.2 - 33.4)E 2 ( 6.1 - 52.8)E 2 ( 6.1 - 52.8)E 2 (12/ 12) (6/ 6) (6/ 6) K-40 (18) 4.0E 3 09 4.1E 3 3.5E 3 (0) ( 2.6 - 5.5)E 3 ( 2.6 - 5.5)E 3 ( 2.3 - 5.5)E 3 (12/ 12) (6/ 6) (6/ 6) Cr-51 (18) -2.1E 1 09 -6.3E 0 -1.5E 1 (0) ( -1.4 - 0.8)E 2 ( -1.0 - 0.8)E 2 ( -8.1 - 5.3)E 1 (0/ 12) (0/ 6) (0/ 6) Mn-54 (18) 2.5E 0 08 3.3E 0 2.4E 0 (0) ( -4.1 - 11.0)E 0 ( -4.1 - 11.0)E 0 ( -1.4 - 6.7)E 0 (0/ 12) (0/ 6) (0/ 6) Co-57 (18) -2.4E -1 09 3.5E -1 -5.7E -2 (0) ( -6.7 - 5.8)E 0 ( -2.8 - 3.2)E 0 ( -6.2 - 9.3)E 0 (0/ 12) (0/ 6) (0/ 6) Co-58 (18) 4.2E 0 08 5.7E 0 1.0E 0 (0) ( -6.7 - 17.8)E 0 ( -2.3 - 178.0)E -1 ( -6.5 - 8.2)E 0 (0/ 12) (0/ 6) (0/ 6) Fe-59 (18) -4.2E -1 09 1.7E -1 -1.2E 0 (0) ( -1.4 - 2.0)E 1 ( -1.4 - 1.1)E 1 ( -9.1 - 5.0)E 0 (0/ 12) (0/ 6) (0/ 6) Co-60 (18) 2.3E 0 09 3.8E 0 2.1E 0 (0) ( -8.9 - 19.9)E 0 ( -3.3 - 19.9)E 0 ( -6.0 - 8.0)E 0 (0/ 12) (0/ 6) (0/ 6) Zn-65 (18) -4.5E -1 09 6.2E 0 -1.7E 0 (0) ( -3.3 - 1.6)E 1 ( -1.4 - 1.6)E 1 ( -1.9 - 1.5)E 1 (0/ 12) (0/ 6) (0/ 6) Se-75 (18) -6.7E -1 10 4.7E -1 4.7E -1 (0) ( -1.6 - 1.6)E 1 ( -4.6 - 14.0)E 0 ( -4.6 - 14.0)E 0 (0/ 12) (0/ 6) (0/ 6) Nb-95 (18) 2.7E -1 08 1.7E 0 -1.4E -1 (0) ( -8.5 - 13.3)E 0 ( -6.8 - 13.3)E 0 ( -1.1 - 0.9)E 1 (0/ 12) (0/ 6) (0/ 6) Zr-95 (18) 1.8E 0 08 4.0E 0 -2.5E 0 (0) ( -1.3 - 1.4)E 1 ( -1.0 - 1.4)E 1 ( -2.4 - 2.0)E 1 (0/ 12) (0/ 6) (0/ 6) Ru-103 (18) 1.1E 0 08 2.6E 0 9.5E -1 (0) ( -7.9 - 9.6)E 0 ( -3.2 - 9.6)E 0 ( -3.8 - 12.3)E 0 (0/ 12) (0/ 6) (0/ 6) Ru-106 (18) 4.2E 0 08 2.3E 1 1.3E 0 (0) ( -1.0 - 1.4)E 2 ( -1.0 - 1.4)E 2 ( -4.6 - 11.0)E 1 (0/ 12) (0/ 6) (0/ 6)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e., > MDC with no uncertain identification) is shown in parentheses

.

Table 3.12

-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 20 18) MEDIUM: Vegetation (TG) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations

Radionuclides Mean Station Mean Mean (No. Analyses)

Required Range Range Range (Non-Routine*) LL D (No. Detected**)

(No. Detected**)

_______________________________________________________________________________________________________

Ag-108m (18) 9.7E -1 08 1.8E 0 -8.4E -1 (0) ( -4.4 - 15.7)E 0 ( -3.8 - 15.7)E 0 ( -4.1 - 4.4)E 0 (0/ 12) (0/ 6) (0/ 6) Ag-110m (18) -6.5E -1 08 3.9E -1 -1.8E 0 (0) ( -1.5 - 1.0)E 1 ( -1.5 - 1.0)E 1 ( -7.6 - 3.6)E 0 (0/ 12) (0/ 6) (0/ 6) Sb-124 (18) -1.0E 0 10 3.9E 0 3.9E 0 (0) ( -2.5 - 2.0)E 1 ( -3.9 - 14.8)E 0 ( -3.9 - 14.8)E 0 (0/ 12) (0/ 6) (0/ 6) Sb-125 (18) 6.6E -1 08 7.4E 0 -4.9E 0 (0) ( -3.4 - 3.3)E 1 ( -2.1 - 3.3)E 1 ( -1.1 - 0.2)E 1 (0/ 12) (0/ 6) (0/ 6) I-131 (18) 60 -1.5E 0 10 2.7E 0 2.7E 0 (0) ( -8.7 - 5.8)E 0 ( -1.3 - 2.3)E 1 ( -1.3 - 2.3)E 1 (0/ 12) (0/ 6) (0/ 6) Cs-134 (18) 60 1.9E 0 10 4.4E 0 4.4E 0 (0) ( -1.2 - 1.4)E 1 ( -5.1 - 9.1)E 0 ( -5.1 - 9.1)E 0 (0/ 12) (0/ 6) (0/ 6) Cs-137 (18) 80 3.0E 0 10 9.3E 1 9.3E 1 (0) ( -1.5 - 1.1)E 1 ( -1.2 - 38.0)E 1 ( -1.2 - 38.0)E 1 (0/ 12) (3/ 6) (3/ 6) Ba-140 (18) 2.5E 1 09 3.1E 1 -6.2E 0 (0) ( -3.1 - 66.8)E 0 ( 1.3 - 6.7)E 1 ( -4.1 - 2.2)E 1 (0/ 12) (0/ 6) (0/ 6) La-140 (18) -7.8E -1 08 2.3E 0 -4.0E 0 (0) ( -1.9 - 1.4)E 1 ( -8.0 - 7.6)E 0 ( -1.1 - 0.5)E 1 (0/ 12) (0/ 6) (0/ 6) Ce-141 (18) -1.3E 1 10 3.8E 0 3.8E 0 (0) ( -5.6 - 0.4)E 1 ( -2.0 - 11.3)E 0 ( -2.0 - 11.3)E 0 (0/ 12) (0/ 6) (0/ 6) Ce-144 (18) -1.3E 1 10 4.1E 0 4.1E 0 (0) ( -5.2 - 2.6)E 1 ( -2.6 - 3.1)E 1 ( -2.6 - 3.1)E 1 (0/ 12) (0/ 6) (0/ 6) Ac-228 (18) 6.6E 1 08 8.7E 1 2.7E 1 (0) ( -1.6 - 17.3)E 1 ( -1.6 - 17.3)E 1 ( 0.0 - 1.0)E 2 (1/ 12) (1/ 6) (0/ 6) Th-228 (18) 9.8E 0 08 1.1E 1 3.2E -2 (0) ( -1.9 - 6.0)E 1 ( -1.9 - 6.0)E 1 ( -2.4 - 3.4)E 1 (1/ 12) (1/ 6) (0/ 6)

Non-Routine refers to those radionuclides that exceeded the Reporting Le vels in ODCM Table A.9.1

-3. ** The fraction of detectable measurements (i.e.

, > MDC with no uncertain identification) is shown in parentheses

.

3.13 Direct Radiation Direct gamma radiation exposure was measured with thermoluminescent dosimeters (TLDs). Two TLD badges are placed at each of the designated monitoring stations. Each TLD badge has three CaSO 4:Tm elements. The badges were collected and read on a quarterly schedule. A location result is an a verage of six independent readings per quarter. A total of forty-six stations are located offsite, forty of which are required by the ODCM. The exposure rates were normalized to a standard 91-day quarter so that quarterly results from any monitoring location can be compared to another location based on an equivalent time period of exposure.

A summary of the 2018 data for the plant operational REMP is shown in Table 3.

13-1. Figures 3.6 through 3.14 provide a comparison of quarterly TLD location responses in 2018 and illustrate the naturally variation in exposure rates quarter to quarter. Figures 3.6.1 through 3.14.1 provide a long term trend line for each of the environmental TLD locations

. The exposure rate response at individual monitoring stations have occasionally exhibited step changes at some point in the past that are related to changes in local conditions in the area of the dosimeter measurement. As a n example, the outer ring TL-33 (a parking lot located 9.8 km south of the plant) was observed for several quarters in the recent past to approach or exceed the normal expected environmental fluctuations base d on observed history.

The average TLD exposure rate from the 2nd quarter 2011 through the 4th quarter of 2013 is reported as 21.8 mR/quarter. For the 7 prior quarters (3rd quarter 2009 to the 1 st quarter 2011), the average TLD response was 18.6 mR/quarter, or approximatel y 17% lower than the most recent trend history. Since no other TLDs in the same sector or closer to the plant showed an average increase in measure d response above the expected, the change at TL

-33 was attributed to a local change in the background radiation associated with parking lot modifications and not with Seabrook Station operations

. Field investigations of TL

-33 indicated that the parking lot appeared to be re-graded with new fill/gravel material which could have increased the natural concentration of background radiation that the TLD measures. The expected background exposure level for location TL

-33 was re-indexed to 20.6 mR/quarter in 2013 to reflect the observed change in background radiation. Two other locations (TL-01 and TL-69) also indicated changes in background exposure rates trends over time (unrelated to Seabrook operations) and had their expected background exposure levels re

-indexed to 17.4 mR/quarter and 13.7 mR/quarter, respectively, in 2013. O verall, the REMP direct radiation program showed no statistically significant indication of increased direct radiation abo ve the variable background measured exposure rate in unrestricted areas. This is demonstrated by the fact that indicator location res ults (as a group) are statistically the same as control locations. The 2018 annual mean of all indicator locations wa s 16.2 mR/91-day quarter while the mean of all control locations was 17.3 mR/91-day quarter. This indicates that collectively there is no statistical difference in the annual direct dose as a function of distance from the plant. As a result, no direct radiation dose beyond the site boundary was attributed to station operation during 2018. Starting in 2015, a supplemental analytical method was implemented to evaluate the TLD measurements

. Using the method described in ANSI/HPS N13.37

-2014, quarterly and annual baseline dose for each TLD location was determined using appropriate statistical analytical methods considering data from 2004 through 201

4. Quarterly and annual dose for 20 18 was compared to baseline values to determine if an Investigation Level had been exceeded for evaluation of potential dose to a member of the public. An Investigation Level is considered to be exceeded under the following conditions:

Quarterly: If M Q > (B Q + MDD Q), then F Q = M Q - B Q Where: M Q is the normalized quarterly field measurement result B Q is the quarterly baseline background dose MDD Q is the quarterly minimum differential dose and F Q is the quarterly facility related dose

Or: Annually: If M A > (B A + MDD A), then F A = M A - B A Where: M A is the sum of the four normalized quarterly measurement values B A is the annual baseline background dose MDD A is the annual minimum differential dose F A is the annual facility related dose Table 3.13

-3 summarizes the evaluation of the TLD measurements using the methodology described in ANSI/HPS N13.37

-2014. As noted in Table 3.13

-3, TLD location TL

-24 (Ferry Lots Lane, Salisbury) was found to have a calculated annual facility dose of 10 mR when comparing the measured TLD value against the annual baseline value. However, this dose was determined not to be facility related due to the distance of this TLD location with respect to the plant (7.2 km) and the lack of any observed dose for TLD locations closer to the plant. The observed dose is likely a result of a change in the environment at the TLD location. This same TLD location was found to have a calculated quarterly and annual facility dose during 2016. Additionally, Figure 3.10.1 shows a step increase in the quarterly TLD measurements for this location starting in 2015. For this reason, the quarterly and annual baseline values for this location have be en adjusted to incorporate the latest four years of data. Updating the quarterly and annual baseline calculations to utilize data from 2008

- 2018, results in a quarterly baseline value of 16.0 mR and an annual baseline value of 63.9 mR. Using these updated baseline values results in no detectable quarterly or annual dose. These updated baseline values for location TL

-24 will continue to be used in future assessments.

The direct radiation

-monitoring program demonstrated that no increasing or decreasing trends were detected. Therefore, there was no offsite dose to the public or impact to the environment from the operation of the plant. Any TLD collection and analysis deviations from the ODCM required program that may ha ve occurred during the year are described in Section

5.

TABLE 3.13-1 Environmental TLD Measurements Net Exposure in mR/Standard Quarter (91 days) 2018 QtrSta.Ave.No.DescriptionExp. S.D.Exp. S.D.Exp.S.D.Exp. S.D.Exp.TL-01Brimmer's Lane17.9 +0.918.4 +0.817.7 +0.717.7 +0.817.9TL-02Landing Road14.7 +0.914.0 +0.613.2 +0.614.2 +0.614.0TL-03Glade Path15.3 +0.914.5 +0.713.8 +0.514.2 +0.714.5TL-04Island Path15.1 +1.015.1 +0.914.4 +0.614.9 +0.714.9TL-05Harbor Road15.6 +0.714.9 +0.814.1 +0.614.4 +0.514.8TL-06Barge Landing14.5 +0.715.4 +0.713.7 +0.514.9 +0.614.6TL-07Cross Road13.0 +0.613.8 +0.612.0 +0.513.0 +0.713.0TL-08Farm Lane15.7 +0.916.0 +0.714.6 +0.715.3 +0.715.4TL-09Farm Lane16.0 +0.816.8 +0.715.7 +0.616.2 +0.816.2TL-10Site Boundary15.6 +0.717.0 +0.615.4 +0.716.1 +0.816.0TL-11Site Boundary17.5 +1.019.3 +0.817.4 +0.917.9 +0.818.0TL-12Site Boundary17.8 +1.018.9 +0.817.8 +0.718.5 +0.918.3TL-13Inside Site Boundary18.7 +0.919.2 +0.917.2 +0.718.3 +0.818.4TL-14Trailer Park16.1 +0.715.8 +0.914.9 +0.516.1 +0.715.7TL-15Brimmer's Lane17.8 +0.918.3 +1.017.9 +0.918.6 +1.118.2TL-16Brimmer's Lane16.3 +0.716.9 +0.716.0 +0.616.2 +1.016.4TL-17South Road15.8 +0.716.4 +0.715.8 +0.615.4 +0.915.9TL-18Mill Road16.2 +0.917.1 +0.816.8 +0.617.6 +0.716.9TL-19Appledore Avenue15.2 +0.815.5 +0.814.9 +0.715.2 +0.515.2TL-20Ashworth Avenue17.5 +0.816.7 +0.816.2 +0.617.4 +0.717.0TL-21Route 1A18.1 +0.819.1 +0.817.7 +0.618.6 +0.718.4TL-22Cable Avenue15.6 +0.816.4 +0.814.7 +0.515.5 +0.715.6TL-23Ferry Road15.9 +0.715.7 +0.815.2 +0.615.1 +0.715.5TL-24Ferry Lots Lane17.5 +0.818.0 +0.917.8 +0.717.3 +0.817.7TL-25Elm Street16.0 +0.716.0 +0.815.3 +0.615.8 +0.715.8TL-26Route 107A14.5 +0.715.5 +0.815.0 +0.515.1 +0.615.0TL-27Highland Street15.9 +1.016.2 +0.615.8 +0.515.9 +0.616.0TL-28Route 15016.8 +0.617.2 +0.716.4 +0.617.6 +0.717.0TL-29Frying Pan Lane15.6 +0.716.1 +0.715.0 +0.515.5 +0.615.6TL-30Route 2715.6 +0.617.3 +0.916.8 +0.717.0 +0.616.7TL-31Alumni Drive13.8 +0.615.1 +0.714.5 +0.714.7 +0.614.5TL-32SB Elementary School17.4 +0.818.3 +1.017.4 +0.617.7 +0.617.7TL-33Dock Area12.5 +0.511.4 +0.611.6 +0.511.0 +0.511.6TL-34Bow Street20.4 +0.920.2 +1.019.9 +0.820.4 +0.720.2TL-35Lincoln Ack. School17.1 +0.918.2 +0.818.1 +0.618.3 +0.817.9TL-36Route 97(Control)15.7 +0.715.1 +0.714.7 +0.714.5 +0.815.0TL-37Plaistow, NH (Control)17.9 +0.717.9 +0.818.0 +0.817.8 +0.817.9TL-38Hampstead, NH (Control)17.9 +0.918.6 +0.718.3 +0.818.4 +0.818.3 2nd Quarter 3rd Quarter 4th Quarter 1st Quarter

TABLE 3.13-1 (Continued)

Environmental TLD Measurements Net Exposure in mR/Standard Quarter (91 days) 2018 Qtr.Sta.Ave.No.DescriptionExp. S.D.Exp. S.D.Exp.S.D.Exp. S.D.Exp.TL-39Fremont, NH (Control)20.3 +0.921.4 +1.021.0 +0.920.6 +0.920.8TL-40Newmarket, NH (Control)16.3 +1.018.1 +0.917.3 +0.617.1 +0.717.2TL-41Portsmouth, NH (Control)17.5 +0.817.8 +0.816.7 +0.817.1 +0.817.3TL-42Ipswich, MA (Control)14.9 +0.714.1 +0.814.1 +0.913.9 +0.914.3TL-44SB Education Center14.9 +1.116.0 +0.815.0 +0.614.7 +0.715.2TL-45Hampton Fire Station15.9 +1.116.8 +0.816.7 +0.616.2 +0.716.4TL-46SB Police Station16.7 +0.716.7 +0.816.6 +0.616.7 +0.716.7TL-47Route 8416.7 +0.717.3 +0.816.2 +1.016.2 +0.816.6Mean of Indicators16.116.615.816.216.2Mean of Controls17.217.617.217.117.3 2nd Quarter 4th Quarter 3rd Quarter 1st Quarter

Table 3.13

-2 Pre-Operational Environmental TLD Measurements Net Exp o sure in mR/Standard Quarter (91 days)

Qtr. Ave 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Over Yr Exp. Exp. Exp. Exp. Exp. 1982 Mean of Indicators

-- 17.1 18.1 17.5 17.6 Mean of Controls

-- 16.9 18.1 17.9 16.8 1983 Mean of Indicators 16.7 17.1 18.8 17.9 17.6 Mean of Controls 16.9 17.5 18.7 18.4 17.9 1984 Mean of Indicators 16.1 17.1 16.9 17.5 17.0 Mean of Controls 17.6 17.4 15.8 18.7 17.4 1985 Mean of Indicators 16.9 18.0 18.9 16.1 17.4 Mean of Controls 16.8 17.7 18.9 16.1 17.4 1986 Mean of Indicators 14.0 15.5 15.3 15.0 15.0 Mean of Controls 13.9 18.0 16.8 15.1 16.0 1987 Mean of Indicators 12.7 14.8 15.0 14.4 14.2 Mean of Controls 13.0 14.8 15.3 15.0 14.6 1988 Mean of Indicators 13.5 14.1 14.7 14.9 14.3 Mean of Controls 13.3 14.4 18.1 14.6 15.1 1989 Mean of Indicators 14.4 14.3 -- -- 14.4 Mean of Controls 14.0 14.4 -- -- 14.2 All Pre-Operational Mean of Indicators 14.9 16.0 16.8 16.2 15.9 Mean of Controls 15.1 16.4 17.4 16.5 16.2 Table 3.13

-3 Facility Related Dose using ANSI/HPS N13.37

-2014 Methodology Quarterly Ave.

Quarterly Facility Dose Annual 2018 Annual Facility Dose Baseline, B Q 20 18 Quarterly Monitoring Data, M Q (mR/qtr) F Q = M Q - (B Q+MDD Q) Baseline, B A Annual TLD Data, M A F A = M A - (B A+MDD A) mR 1 2 3 4 1 2 3 4 mR mR TL-01 Brimmer's Lane 18.6 17.9 18.4 17.7 17.7 ND ND ND ND 74.5 71.6 ND TL-02 Landing Road 13.8 14.7 14.0 13.2 14.2 ND ND ND ND 55.1 56.2 ND TL-03 Glade Path 14.9 15.3 14.5 13.8 14.2 ND ND ND ND 59.5 57.7 ND TL-04 Island Path 15.9 15.1 15.1 14.4 14.9 ND ND ND ND 63.7 59.4 ND TL-05 Harbor Road 14.6 15.6 14.9 14.1 14.4 ND ND ND ND 58.1 59.0 ND TL-06 Barge Landing 14.6 14.5 15.4 13.7 14.9 ND ND ND ND 58.6 58.5 ND TL-07 Cross Road 12.5 13.0 13.8 12.0 13.0 ND ND ND ND 50.0 51.9 ND TL-08 Farm Lane 15.8 15.7 16.0 14.6 15.3 ND ND ND ND 63.1 61.6 ND TL-09 Farm Lane 16.3 16.0 16.8 15.7 16.2 ND ND ND ND 65.3 64.7 ND TL-10 Site Boundary 17.2 15.6 17.0 15.4 16.1 ND ND ND ND 68.7 64.1 ND TL-11 Site Boundary 17.5 17.5 19.3 17.4 17.9 ND ND ND ND 69.9 72.0 ND TL-12 Site Boundary 18.2 17.8 18.9 17.8 18.5 ND ND ND ND 72.6 73.1 ND TL-13 Inside Site Boundary 19.2 18.7 19.2 17.2 18.3 ND ND ND ND 77.0 73.5 ND TL-14 Trailer Park 15.9 16.1 15.8 14.9 16.1 ND ND ND ND 63.5 62.9 ND TL-15 Brimmer's Lane 18.8 17.8 18.3 17.9 18.6 ND ND ND ND 75.0 72.7 ND TL-16 Brimmer's Lane 16.2 16.3 16.9 16.0 16.2 ND ND ND ND 64.8 65.4 ND TL-17 South Road 16.3 15.8 16.4 15.8 15.4 ND ND ND ND 65.2 63.4 ND TL-18 Mill Road 15.5 16.2 17.1 16.8 17.6 ND ND ND ND 62.0 67.7 ND TL-19 Appledore Avenue 15.5 15.2 15.5 14.9 15.2 ND ND ND ND 62.1 60.8 ND TL-20 Ashworth Avenue 17.5 17.5 16.7 16.2 17.4 ND ND ND ND 70.2 67.8 ND TL-21 Route 1A 16.6 18.1 19.1 17.7 18.6 ND ND ND ND 66.3 73.5 ND TL-22 Cable Avenue 16.3 15.6 16.4 14.7 15.5 ND ND ND ND 65.4 62.3 ND TL-23 Ferry Road 15.7 15.9 15.7 15.2 15.1 ND ND ND ND 62.7 61.8 ND Table 3.13

-3 (Cont'd)

Facility Related Dose using ANSI/HPS N13.37

-2014 Methodology Quarterly Ave.

Quarterly Facility Dose Annual 20 18 Annual Facility Dose Baseline B Q 20 18 Quarterly Monitoring Data, M Q (mR/qtr) F Q = M Q - (B Q+MDD Q) Baseline B A Annual TLD Data, M A F A = M A - (B A+MDD A) mR 1 2 3 4 1 2 3 4 mR mR TL-24 Ferry Lots Lane 15.1 17.5 18.0 17.8 17.3 ND ND ND ND 60.4 70.4 (1) TL-25 Elm Street 15.6 16.0 16.0 15.3 15.8 ND ND ND ND 62.3 63.1 ND TL-26 Route 107A 15.4 14.5 15.5 15.0 15.1 ND ND ND ND 61.8 60.3 ND TL-27 Highland Street 16.1 15.9 16.2 15.8 15.9 ND ND ND ND 64.3 63.9 ND TL-28 Route 150 16.2 16.8 17.2 16.4 17.6 ND ND ND ND 64.9 68.0 ND TL-29 Frying Pan Lane 15.4 15.6 16.1 15.0 15.5 ND ND ND ND 61.6 62.2 ND TL-30 Route 27 15.7 15.6 17.3 16.8 17.0 ND ND ND ND 62.9 66.7 ND TL-31 Alumni Drive 14.3 13.8 15.1 14.5 14.7 ND ND ND ND 57.0 58.0 ND TL-32 SB Elementary School 17.8 17.4 18.3 17.4 17.7 ND ND ND ND 71.2 70.9 ND TL-33 Dock Area 21.4 12.5 11.4 11.6 11.0 ND ND ND ND 84.4 46.4 ND TL-34 Bow Street 19.5 20.4 20.2 19.9 20.4 ND ND ND ND 78.2 80.8 ND TL-35 Lincoln Ack. School 18.2 17.1 18.2 18.1 18.3 ND ND ND ND 72.6 71.7 ND TL-36 Route 97(Control) 15.4 15.7 15.1 14.7 14.5 ND ND ND ND 61.9 60.0 ND TL-37 Plaistow, NH (Control) 18.0 17.9 17.9 18.0 17.8 ND ND ND ND 72.0 71.7 ND TL-38 Hampstead, NH (Control) 19.8 17.9 18.6 18.3 18.4 ND ND ND ND 79.3 73.2 ND TL-39 Fremont, NH (Control) 21.3 20.3 21.4 21.0 20.6 ND ND ND ND 85.2 83.2 ND TL-40 Newmarket, NH (Control) 16.7 16.3 18.1 17.3 17.1 ND ND ND ND 66.9 68.8 ND TL-41 Portsmouth, NH (Control) 16.9 17.5 17.8 16.7 17.1 ND ND ND ND 67.6 69.1 ND TL-42 Ipswich, MA (Control) 14.3 14.9 14.1 14.1 13.9 ND ND ND ND 57.2 57.0 ND TL-44 SB Education Center 14.8 14.9 16.0 15.0 14.7 ND ND ND ND 59.0 60.6 ND

Table 3.13

-3 (Cont'd)

Facility Related Dose using ANSI/HPS N13.37

-2014 Methodology Quarterly Ave.

Quarterly Facility Dose Annual 20 18 Annual Facility Dose Baseline B Q 20 18 Quarterly Monitoring Data, M Q (mR/qtr) F Q = M Q - (B Q+MDD Q) Baseline B A Annual TLD Data, M A F A = M A - (B A+MDD A) mR 1 2 3 4 1 2 3 4 mR mR TL-45 Hampton Fire Station 16.9 15.9 16.8 16.7 16.2 ND ND ND ND 67.7 65.6 ND TL-46 SB Police Station 16.7 16.7 16.7 16.6 16.7 ND ND ND ND 66.7 66.6 ND TL-47 Route 84 15.6 16.7 17.3 16.2 16.2 ND ND ND ND 62.4 66.4 ND MDD Q = 4.46 = minimum differential exposure, quarterly, 3 times 90th percentile S Q determined from analysis in mR.

MDD A = 8.89 = minimum differential exposure, annual, 3 times 90th percentile S A determined from analysis in mR.

B Q = Quarterly baseline exposure (mR).

M Q = location's 91 day standard quarterly exposure (mR).

L Q = Quarterly Investigative Level exposure (mR).

B A = Quarterly baseline background average exposure (mR).

M A = Annual monitoring data, determined by summing the quarterly data over all four quarters (mR).

L A = Annual Investigative Level exposure (mR).

ND = Facility contribution to exposure "Not Detected" (1) An annual dose of 10.0 mR was calculated for location TL-24 using the ANSI/HPS N13.37

-2014 methodology and the baseline values calculated using data from 2004 to 2014. However, this dose was determined not to be facility related due to the distance of this TLD location with respect to the plant (7.2 km) and the lack of any observed dose for TLD locations closer to the plant. The observed dose is likely a result of a change in the environment at the TLD location. Figure 3.10.1 shows a step increase in the quarterly TLD values for this location starting in 2015. For this reason, the quarterly and annual baseline values for this location have been adjusted to incorporate the most recent four years of data. Updating the quarterly and annual baseline calculations to utilize data from 2008

- 2018, results in a quarterly baseline value of 16.0 mR and an annual baseline value of 63.9 mR. Using these updated values results in no detectable quarterly or annual dose when compared to the baseline values. These updated baseline values for location TL

-24 will continue to be used in future assessments.

0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018FIGURE 3.6 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-01 Brimmer's LaneTL-02 Landing RoadTL-03 Glade PathTL-04 Island PathTL-05 Harbor Road 0 10 20 30 0 10 20 3019861988199019921994199619982000200220042006200820102012201420162018mR per QuarterFIGURE 3.6.1ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-01 Brimmer's LaneTL-02 Landing RoadTL-03 Glade PathTL-04 Island PathTL-05 Harbor Road 0.010.020.030.040.00.010.020.030.040.0Qtr-1Qtr-2Qtr-3Qtr-4mR per Quarter 2018FIGURE 3.7ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-06 Barge LandingTL-07 Cross RoadTL-08 Farm LaneTL-09 Farm LaneTL-10 Site Boundary 0 10 20 30 0 10 20 3019861988199019921994199619982000200220042006200820102012201420162018mR per QuarterFIGURE 3.7.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)SEABROOK STATIONTL-06 Barge LandingTL-07 Cross RoadTL-08 Farm LaneTL-09 Farm LaneTL-10 Site Boundary 0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018FIGURE 3.8 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)SEABROOK STATIONTL-11 Site BoundaryTL-12 Site BoundaryTL-13 Inside Site BoundaryTL-14 Trailer ParkTL-15 Brimmer's Lane 0 10 20 30 0 10 20 3019861988199019921994199619982000200220042006200820102012201420162018mR per QuarterFIGURE 3.8.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-11 Site BoundaryTL-12 Site BoundaryTL-13 Inside Site BoundaryTL-14 Trailer ParkTL-15 Brimmer's Lane 0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018FIGURE 3.9ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-16 Brimmer's LaneTL-17 South RoadTL-18 Mill RoadTL-19 Appledore AvenueTL-20 Ashworth Avenue

0 10 20 30 0 10 20 3019861988199019921994199619982000200220042006200820102012201420162018mR per QuarterFIGURE 3.9.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-16 Brimmer's LaneTL-17 South RoadTL-18 Mill RoadTL-19 Appledore AvenueTL-20 Ashworth Avenue 0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018FIGURE 3.10ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-21 Route 1ATL-22 Cable AvenueTL-23 Ferry RoadTL-24 Ferry Lots LaneTL-25 Elm Street 0 10 20 30 0 10 20 3019861988199019921994199619982000200220042006200820102012201420162018mR per QuarterFIGURE 3.10.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)SEABROOK STATIONTL-21 Route 1ATL-22 Cable AvenueTL-23 Ferry RoadTL-24 Ferry Lots LaneTL-25 Elm Street 0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018FIGURE 3.11 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-26 Route 107ATL-27 Highland StreetTL-28 Route 150TL-29 Frying Pan LaneTL-30 Route 27 0 10 20 30 0 10 20 3019861988199019921994199619982000200220042006200820102012201420162018mR per QuarterFIGURE 3.11.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-26 Route 107ATL-27 Highland StreetTL-28 Route 150TL-29 Frying Pan LaneTL-30 Route 27 0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018FIGURE 3.12 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-31 Alumni DriveTL-32 SB Elementarty SchoolTL-33 Dock AreaTL-34 Bow StreetTL-35 Lincoln Ackerman School 0 10 20 30 0 10 20 3019861988199019921994199619982000200220042006200820102012201420162018mR per QuarterFIGURE 3.12.1ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-31 Alumni DriveTL-32 SB Elementary SchoolTL-33 Dock AreaTL-34 Bow StreetTL-35 Lincoln Ackerman School 0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018FIGURE 3.13 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-36 Route 97 (Control)TL-37 Plaistow, NH (Control)TL-38 Hampstead NH (Control)TL-39 Fremont, NH (Control)TL-40 Newmarket, NH (Control) 0 10 20 30 0 10 20 30 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018mR per QuarterFIGURE 3.13.1ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-36 Route 97 (Control)TL-37 Plaistow, NH (Control)TL-38 Hampstead NH (Control)TL-39 Fremont, NH (Control)TL-40 Newmarket, NH (Control) 0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018FIGURE 3.14 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-41 Portsmouth, NH (Control)TL-42 Ipswich, MA (Control)TL-44 SB Education CenterTL-45 Hampton Fire StationTL-46 SB Beach Police StationTL-47 Hampton Falls, Route 84

0 10 20 30 0 10 20 3019861988199019921994199619982000200220042006200820102012201420162018mR per QuarterFIGURE 3.14.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-41 Portsmouth, NH (Control)TL-42 Ipswich, MA (Control)TL-43 Rocks Road LandingTL-44 SB Education CenterTL-45 Hampton Fire StationTL-46 SB Beach Police StationTL-47 Hampton Falls, Route 84 4.0 Dry Fuel Storage REMP & Data Summary The Dry Fuel Storage (DFS) radiological environmental monitoring program required by ODCM Control C.9.4.1 provides representative measurements of direct (including scattered) radiation exposure at those locations that have the highest potential for dose to members of the public resulting from dry fuel storage operations. The design of the storage facility is such that there are no liquid or gaseous effluents released to the environment from the DFS and, therefore, no associated exposure pathways for liquids and gases requiring the collection and analysis of such sample media. As a result, only direct (including scattered) radiation from the DFS modules need to be monitored for integrated exposures in areas where doses to members of the public need to be limited.

At locations near the DFS where members of the public might be present (off

-site areas near the site boundary and on-site special use locations, i.e., the Science and Nature Center

, the Fitness Center located in the High Rise office building east of the DFS facility and the Firing Range located on the west site boundary), TLDs were placed at least 1 year (4 quarterly measurements) prior to used fuel bein g placed into storage. The DFS received its first load of fuel for storage on July 28, 2008. A total of 6 fuel canisters were placed in the NUHOMS

© Horizontal Storage Modules (HSM) on the DFS pad during 2008 with the last one being loaded on September 4, 2008. A second fuel transfer campaign was conducted during August and September, 201 3 , with an additional 8 fuel canisters placed into storage, and a third fuel transfer campaign during August - October of 2017 with an additional 8 fuel canisters bringing the total to 22 canisters in storage

.

The DFS radiological environmental monitoring stations are listed in Table 4.0

-1. At the end of 2013, TLD location SB

-35, which was located inside the old Fitness Center, and location TL

-67 (first quarter of 2014), which was located outside the old Fitness Center south of the DFS, were removed from the program due to the relocation of the fitness center to the High Rise Office Building. TLD locations SB

-32 and SB-33 now provide monitoring for the new Fitness Center location. The measurement locations with respect to the Seabrook site area are shown on Figure 4.0.1. 4.1 Direct Radiation from DFS As with the plant operations TLD program described in Section 3.13, the DFS TLD exposure rates were normalized to a standard 91-day quarter. A summary of the 2018 data for the DFS REMP is shown in Table 4.1-1. Figures 4.1, 4.2 and 4.3 show the quarterly 2018 TLD trend lines for the control and indicator monitoring locations. Figures 4.4, 4.5 and 4.6 provide a compar ison of long term trend lines (18 years) for the same control locations, site boundary and special use sites

.

Overall, the direct radiation program showed no statistically significant indication of increased direct radiation above the variable background measured exposure rate in unrestricted areas. The 2018 annual mean of all indicator locations for the DFS was 16.8 mR/91-day quarter while the mean of all control locations was 17.3 mR/91-day quarter. There was no notable difference detected in the annual exposure rates in areas were members of the public could occupy (site boundary and inside special use locations) and the control locations

. Starting in the 4 th quarter of 2013, location TL-67 indicate d a notable measurement increase in exposure rate following the expansion of fuel storage in the DFS facility in the third quarter of 2013. However, by late November, 2013, the fitness center operations had been transferred from its original location south of the DFS to the High Rise Office Building east of the DFS, thereby ending use of the original fitness center facility and its parking lot by members of the public.

Starting in 2015, an additional analytical method was implemented to evaluate the TLD measurements. Using the method described in ANSI/HPS N13.37

-2014, quarterly and annual baseline dose for each DFS TLD location was determined using appropriate statistical analytical methods considering data from 2004 through 201

4. Quarterly and annual dose for 20 18 was compared to baseline values to determine if an Investigation Level had been exceeded for evaluation of potential dose to a member of the public. An Investigation Level is considered to be exceeded under the following conditions:

Quarterly: If M Q > (B Q + MDD Q), then F Q = M Q - B Q Where: M Q is the normalized quarterly field measurement result B Q is the quarterly baseline background dose MDD Q is the quarterly minimum differential dose and F Q is the quarterly facility related dose or: Annually: If M A > (B A + MDD A), then F A = M A - B A Where: M A is the sum of the four normalized quarterly measurement values B A is the annual baseline background dose MDD A is the annual minimum differential dose F A is the annual facility related dose Table 4.1-2 summarizes the evaluation of the TLD measurements using the methodology described in ANSI/HPS N13.37

-2014. No TLD location exceeded the quarterly or annual investigation level in 2018

. Therefore, no evaluation of dose to a member of the public from direct or scattered radiation was performed.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations that may have occurred during the year are described in Section 5

.

Figure 4.0.

1 Dry Fuel Storage TLD Environmental Monitoring Locations

Table 4.0-1 Dry Fuel Storage (DFS) TLD Monitoring Locations Site Designation Code TLD Sample Location Description(3) Distance From DFS Pad (km) Direction From DFS Pad TL-44 On-site, outside Science & Nature Center (1)(2) 0.21 ESE SB-36 On-site, inside Science & Nature Center 0.24 SE SB-32 High-Rise Building, 3 rd Floor(1) 0.23 E SB-33 High-Rise Building, 1 st Floor (new Fitness Center)

(1) 0.23 E TL-68 Nearby site boundary (firing range) to DFS 0.45 W TL-69 Nearby site boundary (Rocks Rd) to DFS 0.47 W TL-10 Site Boundary Fence (2) 0.77 S TL-11 Site Boundary Fence (2) 0.52 SSW TL-12 Site Boundary fence (2) 0.53 WSW TL-13 Inside Site Boundary (2) 0.61 WNW TL-14 Trailer Park, Seabrook (2) 0.94 NW TL-36 Rt 97, Georgetown (Control) (2) 22 SSW TL-37 Plaistow, NH (Control) (2) 21 WSW TL-38 Hampstead, NH (Control) (2) 27 W TL-39 Fremont, NH (Control) (2) 27 WNW TL-40 Newmarket, NH (Control) (2) 22 NNW TL-41 Portsmouth, NH (Control) (1)(2) 22 NNE TL-42 Ipswich, MA (Control) (1)(2) 22 SSE (1) This location is not part of the required DFS radiological monitoring program as defined in Table A.9.4

-1 of the Seabrook ODCM. (2) Shared environmental monitoring locations for both Seabrook Station REMP and DFS monitoring.

(3) TL-67 and SB-35 locations were removed in 2014 due to relocation of the Fitness Center to the High Rise office building.

TABLE 4.1-1 DFS Environmental TLD Measurements Net Exposures in mR/Standard Quarter (91 days) 2018 Sta.Qtr AveNo.DescriptionExp. S.D.Exp. S.D.Exp.S.D.Exp. S.D.Exp.TL-44Outside Science & Nature C.(1)14.9 +1.116.0 +0.815.0 +0.614.7 +0.715.2SB-36Inside Science & Nature C.16.8 +1.217.2 +1.214.9 +0.516.0 +0.916.2SB-32High-Rise 3rd Floor (1)14.8 +0.614.8 +0.713.7 +0.513.8 +0.614.3SB-33High-Rise 1st Fl.(Fitness Cntr)(1)19.9 +1.020.6 +1.119.0 +0.619.8 +0.619.8TL-68Nearby Site Boundary to DFS18.9 +0.718.4 +1.018.5 +0.918.2 +0.818.5TL-69Nearby Site Boundary to DFS14.8 +0.914.8 +0.714.5 +0.614.8 +0.714.7TL-10Site Boundary Fence (2)15.6 +0.717.0 +0.615.4 +0.716.1 +0.816.0TL-11Site Boundary Fence (2)17.5 +1.019.3 +0.817.4 +0.917.9 +0.818.0TL-12Site Boundary Fence (2)17.8 +1.018.9 +0.817.8 +0.718.5 +0.918.3TL-13Inside Site Boundary (2)18.7 +0.919.2 +0.917.2 +0.718.3 +0.818.4TL-14Trailer Park Seabrook (2)16.1 +0.715.8 +0.914.9 +0.516.1 +0.715.7TL-36Rt 97, Georgetown (control)(2)15.7 +0.715.1 +0.714.7 +0.714.5 +0.815.0TL-37Plaistow, NH (Control)(2)17.9 +0.717.9 +0.818.0 +0.817.8 +0.817.9TL-38Hampstead, NH (Control)(2)17.9 +0.918.6 +0.718.3 +0.818.4 +0.818.3TL-39Fremont, NH (Control)(2)20.3 +0.921.4 +1.021.0 +0.920.6 +0.920.8TL-40Newmarket, NH (Control)(2)16.3 +1.018.1 +0.917.3 +0.617.1 +0.717.2TL-41Portsmouth, NH (Control)(1)(2)17.5 +0.817.8 +0.816.7 +0.817.1 +0.817.3TL-42Ipswich, MA (Control)(1)(2)14.9 +0.714.1 +0.814.1 +0.913.9 +0.914.3Mean of Indicators16.917.516.216.716.8Mean of Controls17.217.617.217.117.3(1) This location is not part of the DFS required program defined by the ODCM.(2) Shared environmental monitoring locations for both plant REMP and DFS monitoring. 3rd Quarter 4th Quarter 1st Quarter 2nd Quarter Table 4.1-2 DFS Facility Related Dose using ANSI/HPS N13.37

-2014 Methodology Quarterly Ave. Baseline, B Q 20 18 Quarterly Monitoring Data, M Q (mR/qtr) Quarterly Facility Dose F Q = M Q - (B Q+MDD Q) Annual Baseline, B A 20 18 Annual TLD Data, M A Annual Facility Dose F A = M A - (B A+MDD A) mR 1 2 3 4 1 2 3 4 mR mR TL-44 On-site, outside Science & Nature Center 14.8 14.9 16.0 15.0 14.7 ND ND ND ND 59.0 60.6 ND SB-36 On-site, inside Science & Nature Center 16.2 16.8 17.2 14.9 16.0 ND ND ND ND 64.7 65.0 ND SB-32 High-Rise Building, 3rd floor 14.0 14.8 14.8 13.7 13.8 ND ND ND ND 55.7 57.2 ND SB-33 High-Rise Building 1st floor, Fitness Center 17.5 19.9 20.6 19.0 19.8 ND ND ND ND 69.2 79.3 ND TL-68 Nearby site boundary (firing Range) 17.7 18.9 18.4 18.5 18.2 ND ND ND ND 70.8 74.0 ND TL-69 Nearby site boundary (Rocks Rd) 14.6 14.8 14.8 14.5 14.8 ND ND ND ND 58.2 58.9 ND TL-10 Site Boundary 17.2 15.6 17.0 15.4 16.1 ND ND ND ND 68.7 64.1 ND TL-11 Site Boundary 17.5 17.5 19.3 17.4 17.9 ND ND ND ND 69.9 72.0 ND TL-12 Site Boundary 18.2 17.8 18.9 17.8 18.5 ND ND ND ND 72.6 73.1 ND TL-13 Inside Site Boundary 19.2 18.7 19.2 17.2 18.3 ND ND ND ND 77.0 73.5 ND TL-14 Trailer Park 15.9 16.1 15.8 14.9 16.1 ND ND ND ND 63.5 62.9 ND TL-36 Route 97(Control) 15.4 15.7 15.1 14.7 14.5 ND ND ND ND 61.9 60.0 ND TL-37 Plaistow, NH (Control) 18.0 17.9 17.9 18.0 17.8 ND ND ND ND 72.0 71.7 ND TL-38 Hampstead, NH (Control) 19.8 17.9 18.6 18.3 18.4 ND ND ND ND 79.3 73.2 ND TL-39 Fremont, NH (Control) 21.3 20.3 21.4 21.0 20.6 ND ND ND ND 85.2 83.2 ND TL-40 Newmarket, NH (Control) 16.7 16.3 18.1 17.3 17.1 ND ND ND ND 66.9 68.8 ND TL-41 Portsmouth, NH (Control) 16.9 17.5 17.8 16.7 17.1 ND ND ND ND 67.6 69.1 ND TL-42 Ipswich, MA (Control) 14.3 14.9 14.1 14.1 13.9 ND ND ND ND 57.2 57.0 ND -100-Table 4.1-2 (cont'd) DFS Facility Related Dose using ANSI/HPS N13.37

-2014 Methodology MDD Q = 4.48 = minimum differential exposure, quarterly, 3 times 90th percentile S Q determined from analysis in mR.

MDD A = 10.17 = minimum differential exposure, annual, 3 times 90th percentile S A determined from analysis in mR.

B Q = Quarterly baseline exposure (mR).

M Q = location's 91 day standard quarterly exposure (mR).

L Q = Quarterly Investigative Level exposure (mR).

B A = Quarterly baseline background average exposure (mR).

M A = Annual monitoring data, determined by summing the quarterly data over all four quarters (mR). L A = Annual Investigative Level exposure (mR).

ND = Facility contribution to exposure "Not Detected" -10 1-0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018 FIGURE 4.1 DFS CONTROL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION TL-41 Portsmouth, NH (Control)TL-42 Ipswich, MA (Control)TL-36 Route 97 (Control)TL-37 Plaistow, NH (Control)TL-38 Hampstead NH (Control)TL-39 Fremont, NH (Control)Control Average 7 stationsTL-40 Newmarket, NH (Control)

-102-0 10 20 30 400.010.020.030.040.0Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018 FIGURE 4.2 DFS ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION TL-10 Site Boundary FenceTL-12 Site Boundary FenceTL-13 Inside Site BoundaryTL-14 Trailer ParkControl Average 7 stationsTL-11 Site Boundary Fence

-103-0 10 20 30 40 0 10 20 30 40Qtr. 1Qtr. 2Qtr. 3Qtr. 4mR per Quarter 2018FIGURE 4.3 DFS ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) SEABROOK STATIONTL-44 Outside Science & Nature CenterSB-36 Inside Science & Nature CenterTL-68 Near Site Boundary to DFSTL-69 Near Site Boundary to DFSControl Average 7 stationsSB-32 High-Rise 3rd Fl.SB-33 High-Rise 1st Fl. (new Fitness Cntr.)

-104-0 10 20 30 0 10 20 302000200120022003200420052006200720082009201020112012201320142015201620172018mR per Quarter years FIGURE 4.4 DFS CONTROL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION TL-41 Portsmouth, NH (Control)TL-42 Ipswich, MA (Control)TL-36 Route 97 (Control)TL-37 Plaistow, NH (Control)TL-38 Hampstead NH (Control)TL-39 Fremont, NH (Control)Control Average 7 stationsTL-40 Newmarket, NH (Control)First DFS loading, July 2008 2nd DFS loading, Completed Sept.

2013 3rd DFS loading, Completed Oct.

2017 -105-0 10 20 30 0 10 20 302000200120022003200420052006200720082009201020112012201320142015201620172018mR per Quarter years FIGURE 4.5 DFS RADIATION MEASUREMENTS TRENDS (USING TLDs)

SEABROOK STATION TL-10 Site Boundary FenceTL-11 Site Boundary FenceTL-12 Site Boundary FenceTL-13 Inside Site BoundaryTL-14 Trailer ParkTL-39 Fremont, NH (Control)Control Average 7 stationsTL-40 Newmarket, NH (Control)First DFS loading, July 2008 2nd DFS loading, Completed Sept.

2013 3rd DFS loading, Completed Oct.

2017 -106-0 10 20 30 0 10 20 30 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018mR per Quarter years FIGURE 4.6 DFS RADIATION MEASUREMENTS TRENDS (USING TLDs)

SEABROOK STATION TL-44 Outside Science & Nature CenterSB-36 Inside Science & Nature CenterTL-67 Outside Old Fitness CenterSB-35 Inside Old Fitness CenterTL-68 Near Site Boundary to DFSTL-69 Near Site Boundary to DFSControl Average 7 stationsTL-40 Newmarket, NH (Control)TL-39 Fremont, NH (Control)SB-32 High-Rise 3rd Fl.SB-33 High-Rise 1st Fl. (new Fitness Cntr.)First DFS loading, July 2008 2nd DFS loading, Completed Sept.

2013 3rd DFS loading, Completed Oct. 2017 -107-5.0 Program Deviations and Reporting 5.1 Sampling Program Deviations Table A.9.1

-1 of the Offsite Dose Calculation Manual (ODCM) allows for deviations in the REMP sampling schedule "if specimens are unobtainable due to circumstances such as hazardous conditions, seasonal unavailability and malfunction of automatic sampling equipment." All deviations from the sampling schedule shall be documented each year in the Radiological Environmental Operating Report. The deviations for 20 18 are as follows:

No sample was obtained for air monitoring location AP/CF-03 for the period of 9/11/18 -9/26/18 due to equipment being out of service, Air monitoring location AP/CF-08 had limited sample collection for the period of 6/6/18

- 6/20/18 due to the unit being found shut off. The out of service time did not impact the ability to collect sufficient sample volume over the collection cycle for this analysis.

5.2 Comparison of Achie ved LLDs with Requirements Table A.9.1

-2 of the ODCM indicates the required Lower Limits of Detection (LLDs) for environmental sample analyses. (This table is duplicated in Table 5.2-1 of this report.) Occasionally an LLD for short-lived radionuclides is not achieved due to low sample volume or delays between sample collection and time of analysis. In such case s, ODCM Table A.9.1-2 requires a discussion of the event in the annual Radiological Environmental Operating Report.

For each analysis having an LLD requirement in ODCM Table A.9.1

-2, the a posteriori (after the fact) Minimum Detectable Concentration (MDC) calculated for that analysis was compared with the required LLD. During 2018, 1328 analyses had an LLD requirement listed in Table 5.2-1. All analyses except for one I-131 analysis of a milk sample taken in September (LSN 459423001) met the required LLDs.

The reason for the missed LLD in the milk sample was the short half

-life for I

-131.

5.3 Comparison of Results against Reporting Le ve ls Seabrook Station ODCM Section 10.1 requires the notification of the NRC by special report within 30 days of receipt from the environmental laboratory whene ver a Reporting Le vel in Table 5.3-1 is exceeded. Reporting Le vels are the environmental concentrations that relate to the ALARA design dose objecti ve s of 10 CFR 50, Appendix I. It should be noted that environmental concentrations are a veraged o ve r calendar quarters for the purposes of this comparison, and that Reporting Le vels apply only to measured le vels of radioactivity due to plant effluents. During 2018, no Reporting Le vels were exceeded.

-108-Table 5.2-1 DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS a Lower Limit of Detection (LLD)

Analysis Water (pCi/kg) Airborne Particulate or Gas (pCi/m

3) Fish and In vertebrates (pCi/kg, wet)

Milk (pCi/kg) Food Products (pCi/kg, wet)

Sediment (pCi/kg, dry)

Gross Beta H-3 Mn-54 Fe-59 Co-58, 60 Zn-65 Zr-Nb-95 I-131 Cs-134 Cs-137 Ba-La-140 4 3,000 15 30 15 30 15 c 15 15 18 15 c 0.01

0.07 0.05 0.06 130 260 130 260 130 150 1 15 18 15 60 b 60 80 150 180 a. Reference Seabrook Station ODCM, Table A.9.1-2 for clarifications

. b. Broad leaf vegetation only.

c. Parent only.

-109-Table 5.3-1 REPORTING LE VELS FOR RADIOACTIVITY CONCENTRATIONS IN ENVIRONMENTAL SAMPLES a Analysis Water (pCi/kg) Airborne Particulate or Gas (pCi/m 3) Fish and In vertebrates (pCi/kg, wet)

Milk (pCi/kg) Food Products (pCi/kg, wet)

H-3 30,000 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-Nb-95 I-131 Cs-134 Cs-137 Ba-La-140 1,000 400 1,000 300 300 400 100 30 50 200 0.9 10 20 30,000 10,000 30,000 10,000 20,000 1,000 2,000 3 60 70 300 100 b 1,000 2,000 a. Reference Seabrook Station ODCM Table A.9.1

-3 for clarifications.

b. Broad leaf vegetation only.

-110-6.0 QUALITY ASSURANCE PROGRAM 6.1 GEL Laboratories QA GEL's primary goals are to ensure that all measurement data generated are scientifically and legally defensible, of known and acceptable quality per the data quality objectives (DQOs), and thoroughly documented to provide sound support for environmental decisions. In addition, GEL continues to ensure compliance with all contractual requirements, environmental standards, and regulations established by local, state and federal authorities.

GEL administers the QA program in accordance with their Quality Assurance Plan, GL

-QS-B-001. The Quality Systems include all quality assurance (QA) policies and quality control (QC) procedures necessary to plan, implement, and assess the work that GEL performs. GEL's QA Program establishes a quality management system (QMS) that governs all of the activities of the organization.

The results of GEL's assessment of their laboratory activities listed in this section entails their quality assurance program for the proficiency testing (PT) and environmental monitoring aspects of GEL for 20 18. GEL's QA Program is designed to monitor the quality of analytical processing associated with environmental, radiobioassay, effluent (10 CFR Part 50), and waste (10 CFR Part 61) sample analysis.

This summary was extracted from GEL Laboratories report entitled "20 18 Annual Quality Assurance Report for the Radiological Environmental Monitoring Program (REMP)", Revision 1, dated March 8, 2019, and includes:

Intra-laboratory QC results analyzed during 2 0 18. Inter-laboratory QC results analyzed during 20 18 where known values were available.

Quality Assurance Programs for Inter

-laboratory, Intra

-laboratory and Third Party Cross Check

In addition to internal and client audits, GEL's laboratory participates in annual performance evaluation studies conducted by independent providers. GEL routinely participates in the following types of performance audits:

Proficiency testing and other inter

-laboratory comparisons

, Performance requirements necessary to retain Certifications

, Evaluation of recoveries of certified reference and in

-house secondary reference materials using statistical process control data and Evaluation of relative percent difference between measurements through statistical process control (SPC) data.

GEL also participate s in a number of proficiency testing programs for federal and state agencies and as required by contracts. It is GEL's policy that no proficiency evaluation samples be analyzed in any special manner. GEL's annual performance evaluation participation generally includes a combination of studies that support the following:

US Environmental Protection Agency (EPA) Discharge Monitoring Report, Quality Assurance Program (DMR

-QA) - An annual national program sponsored by the EPA for laboratories engaged in the analysis of samples associated with the NPDES monitoring program. Participation is mandatory for all holders of NPDES permits. The permit holder must analyze for all of the parameters listed on the discharge permit. Parameters include general chemistry, metals, BOD/COD, oil and grease, ammonia, nitrates, etc.

Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP)

- A semiannual program developed by the DOE in support of DOE contractors performing waste

-111-analyses. Participation is required for all laboratories that perform environmental analytical measurements in support of environmental management activities. This program includes radioactive isotopes in water, soil, vegetation and air filters.

ERA's MRAD

-Multimedia Radiochemistry Proficiency test program

- This program is for labs seeking certification for radionuclides in wastewater and solid waste. The program is conducted in strict compliance with USEPA National Standards for Water Proficiency study.

ERA's InterLab RadChem Proficiency Testing Program for radiological analyses

- This program completes the process of replacing the USEPA EMSL

-LV Nuclear Radiation Assessment Division program, which was discontinued in 1998. Laboratories seeking certification for radionuclide analysis in drinking water also use the study. This program is conducted in strict compliance with the USEPA National Standards for Water Proficiency Testing Studies. This program encompasses Uranium by EPA method 200.8 (for drinking water certification in Utah/Primary NELAP), gamma emitters, Gross Alpha/Beta, Iodine

-131, naturally

-occurring radioactive isotopes, Strontium-89/90, and Tritium.

ERA's Water Pollution (WP) biannual program for waste methodologies, which includes parameters for both organic and inorganic analytes.

ERA's Water Supply (WS) biannual program for drinking water methodologies, which includes parameters for organic and inorganic analytes.

Environmental Cross

-Check Program administered by Eckert & Ziegler Analytics, Inc. - This program encompasses radionuclides in water, soil, milk, naturally

-occurring radioactive isotopes in soil and air filters.

GEL procures single

-blind performance evaluation samples from Eckert & Ziegler Analytics to verify the analysis of sample matrices processed at GEL. Samples are received on a quarterly basis. GEL's Third

-

Party Cross

-Check Program provides environmental matrices encountered in a typical nuclear utility REMP. The Third

-Party Cross

-Check Program is intended to meet or exceed the inter

-laboratory comparison program requirements discussed in NRC Regulatory Guide 4.15. Once performance evaluation samples have been prepared in accordance with the instructions provided by the program test (PT) provider, samples are managed and analyzed in the same manner as environmental samples from GEL's clients.

Quality Assurance Program for Internal and External Audits

During each annual reporting period, at least one internal assessment of each area of the laboratory is conducted in accordance with the pre

-established schedule from Standard Operating Procedure for the Conduct of Quality Audits, GL

-QS-E-001. The annual internal audit plan is reviewed for adequacy and includes the scheduled frequency and scope of quality control actions necessary to GEL's QA program. Internal audits are conducted at least annually in accordance with a schedule approved by the Quality Systems Director. Supplier audits are contingent upon the categorization of the supplier, and may or may not be conducted prior to the use of a supplier or subcontractor. Type I suppliers and subcontractors, regardless of how they were initially qualified, are re

-evaluated at least once every three years.

In addition, prospective customers audit GEL during pre

-contract audits. GEL hosts several external audits each year for both our clients and other programs. These programs include environmental monitoring, waste characterization, and radiobioassay. The following list of programs may audit GEL at least annually or up to every three years depending on the program:

TNI, The NELAC Institute, National Environmental Laboratory Accreditation Program (NELAP); DOECAP, U.S. Department of Energy Consolidated Audit Program

DOELAP, U.S. Department of Energy Laboratory Accreditation Program; -112-DOE QSAS, U.S. Department of Energy, Quality Systems for Analytical Services

ISO/IEC 17025: 2005

A2LA, American Association for Laboratory Accreditation

DOD ELAP, US Department of Defense Environmental Laboratory Accreditation Program; NUPIC, Nuclear Procurement Issues Committee

South Carolina Department of Health and Environmental Control (SC DHEC)

. The annual radiochemistry laboratory internal audit (1 8-RAD-001) was conducted in May, 201 8. One (1) observation and five (5) recommendation s resulted from this assessment. By June 201 8, the appropriate laboratory staff addressed the observation and recommendation

s. Performance Evaluation Acceptance Criteria for Environmental Sample Analysis GEL utilized an acceptance protocol based upon two performance models. For those inter

-laboratory programs that already have established performance criteria for bias (i.e., MAPEP, and ERA/ELAP), GEL will utilize the criteria for the specific program. For intra

-laboratory or third party quality control programs that do not have a specific acceptance criteria (i.e. the Eckert

-Ziegler Analytics Environmental Cross

-check Program), results will be evaluated in accordance with GEL's internal acceptance criteria.

Performance Evaluation Samples

Performance Evaluation (PE) results and internal quality control sample results are evaluated in accordance with GEL acceptance criteria. The first criterion concerns bias, which is defined as the deviation of any one result from the known value. The second criterion concerns precision, which deals with the ability of the measurement to be replicated by comparison of an individual result with the mean of all results for a given sample set.

GEL also evaluates its analytical performance on a regular basis through statistical process control (SPC) acceptance criteria. Where feasible, this criterion is applied to both measures of precision and accuracy and is specific to sample matrix. GEL establishes environmental process control limits at least annually.

For Radiochemistry analysis, quality control evaluation is based on static limits rather than those that are statistically derived. Current process control limits are maintained in GEL's AlphaLIMS. GEL also measures precision with matrix duplicates and/or matrix spike duplicates. The upper and lower control limits (UCL and LCL respectively) for precision are plus or minus three times the standard deviation from the mean of a series of relative percent differences. The static precision criteria for radiochemical analyses are 0 - 20%, for activity levels exceeding the contract required detection limit (CRDL).

Quality Control Program for Environmental Sample Analysis GEL's internal QA Program is designed to include QC functions such as instrumentation calibration checks (to insure proper instrument response), blank samples, instrumentation backgrounds, duplicates, as well as overall staff qualification analyses and statistical process controls. Both quality control and qualification analyses samples are used to be as similar as the matrix type of those samples submitted for analysis by the various laboratory clients. These performance test samples (or performance evaluation samples) are either actual samples submitted in duplicate in order to evaluate the precision of laboratory measurements, or fortified blank samples, which have been given a known quantity of a radioisotope that is in the interest to GEL's clients.

Accuracy (or Bias) is measured through laboratory control samples and/or matrix spikes, as well as surrogates and internal standards. The UCLs and LCLs for accuracy are plus or minus three times the standard deviation from the mean of a series of recoveries. The static limit for radiochemical analyses is 75 - 125%. Specific instructions for out

-of-control situations are provided in the applicable analytical SOP.

GEL's Laboratory Control Standard (LCS) is an aliquot of reagent water or other blank matrix to which known quantities of the method analytes are added in the laboratory. The LCS is analyzed exactly like a

-113-sample, and its purpose is to determine whether the methodology is in control, and whether the laboratory is capable of making accurate and precise measurements. Some methods may refer to these samples as Laboratory Fortified Blanks (LFB). The requirement for recovery is between 75 and 125% for radiological analyses excluding drinking water matrix.

Bias (%) = (observed concentration)

100 % (known concentration)

Precision is a data quality indicator of the agreement between measurements of the same property, obtained under similar conditions, and how well they conform to themselves. Precision is usually expressed as standard deviation, variance or range in either absolute or relative (percentage) terms.

GEL's laboratory duplicate (DUP or LCSD) is an aliquot of a sample taken from the same container and processed in the same manner under identical laboratory conditions. The aliquot is analyzed independently from the parent sample and the results are compared to measure precision and accuracy.

If a sample duplicate is analyzed, it will be reported as Relative Percent Difference (RPD). The RPD must be 20 percent or less, if both samples are greater than 5 times the MDC. If both results are less than 5 times MDC, then the RPD must be equal to or less than 100%. If one result is above the MDC and the other is below the MDC, then the RPD can be calculated using the MDC for the result of the one below the MDC. The RPD must be 100% or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC, the RPD must be less than or equal to 20%. If both results are below MDC, then the limits on % RPD are not applicable.

Difference (%) = (high duplicate result

- low duplicate result)

100 % (average of results)

Summary of Data Results

During 20 18, forty-five (4 5) radioisotopes associated with seven (7) matrix types were analyzed under GEL's Performance Evaluation program in participation with ERA, MAPEP, and Eckert & Ziegler Analytics. Matrix types were representative of client analyses performed during 20

18. Of the four hundred fifty-two (45 2) total results reported, 98.4% (4 45 of 4 5 2) were found to be acceptable. The list below contains the type of matrix evaluated by GEL

Air Filter

, Cartridge , Water, Milk , Soil , Liquid and Vegetation

. A summary list of all Inter

-laboratory radiological proficiency test results and their evaluation against their acceptance criteria is provided in Table 6.1

-1. This list reflects GEL's participation in the MAPEP Monitoring Program, the ERA MRaD PT Program, the ERA PT Program, and the Eckert & Ziegler Analytics Environmental Cross

-Check Program.

Summaries of GEL's Intra

-laboratory test result s for bias and precision by sample matrix are provided in Table 6.1-3 (REMP Related) and Table 6.1

-4 (All Samples).

-114-Summary of Participation in the Eckert & Ziegler Analytics Environmental Cross

-Check Program Eckert & Ziegler Analytics provided samples for ninety-two (92) individual environmental analyses. The accuracy of each result reported to Eckert &

Ziegler Analytics, Inc. is measured by the ratio of GEL's result to the known value. All results fell within GEL's acceptance criteria (100%).

Table 6.1-2 list the results specific to the Eckert & Ziegler Analytics sample provided in 20

18. No corrective action reports were noted for these results.

Summary of Participation in the MAPEP Monitoring Program MAPEP Series 3 8 and 3 9 were analyzed by the laboratory. All one hundred twenty

-four (124) analyses fell within the PT provider's acceptance criteria (100% within acceptance). No corrective action reports were noted for these results.

Summary of Participation in the ERA MRaD PT Program The ERA MRad program provided samples (MRAD

-2 8 and MRAD-2 9) for one hundred eighty-seven (18 7) individual environmental analyses. Of the 187 analyses, 97.3% (182 out of 187) of all results fell within the PT provider's acceptance criteria

. CARR180522

-1154 documents the unacceptable results of Uranium-234, Uranium

-238, Uranium

-Mass and Cobalt

-60 in vegetation of ERA MRAD-28 and CARR 181120-1190 documents the unacceptable result of Iron

-55 in water of ERA MRAD

-29. All corrective actions are provided in Table 6.1

-5. Summary of Participation in the ERA PT Program

The ERA program provided samples (RAD-112 and RAD

-11 4) for forty-nine (49) individual environmental analyses. Of the 49 analyses, 95.9% (4 7 out of 49) of all results fell within the PT provider's acceptance criteria.

CARR180226

-1150 documents the unacceptable result of the Natural Uranium (and mass) via KPA of ERA Study 112. All corrective actions are provided in Table 6.1

-5. Corrective Action Request and Report (CARR)

There are two categories of corrective action at GEL. One is corrective action implemented at the analytical and data review level in accordance with the analytical standard operating procedures (SOP). The other is formal corrective action documented by the Quality Systems Team in accordance with GEL's standard operating procedure GL

-QS-E-002. A formal corrective action is initiated when a nonconformance reoccurs or is so significant that permanent elimination or prevention of the problem is required. Formal corrective action investigations include root cause analysis.

GEL includes quality requirements in most analytical standard operating procedures to ensure that data are reported only if the quality control criteria are met or the quality control measures that did not meet the acceptance criteria are documented. A formal corrective action is implemented according to GEL's standard operating procedure GL

-QS-E-002 for Conducting Corrective/Preventive Action and Identifying Opportunities for Improvement. Recording and documentation is performed following guidelines stated in GEL's standard operating procedure GL

-QS-E-012 for Client NCR Database Operation.

Any employee at GEL can identify and report a nonconformance and request that corrective action be taken. Any GEL employee can participate on a corrective action team as requested by the QS team or Group Leaders. The steps for conducting corrective action are detailed in GEL's standard operating procedure GL

-QS-E-002. In the event that correctness or validity of the laboratory's test results in doubt, the laboratory will take corrective action. If investigations show that the results have been impacted, affected clients will be informed of the issue in writing within five (5) calendar days of the discovery.

-115-Table 6.1-5 provides the status of CARRs for radiological performance testing during 20

18. GEL has determined that causes of the failures did not impact any data reported to its clients.

-116-Table 6.1-1 20 18 INTER-LAB RADIOLOGICAL PROFICIENCY TESTING RESULTS AND ACCEPTANCE CRITERIA PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Barium-133 97.6 95.1 80.2 - 105 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Cesium-134 64.9 65.6 53.4 - 72.2 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Cesium-137 117 112 101 - 126 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Cobalt-60 122 114 103 - 128 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Zinc-65 320 277 249 - 324 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Gross Alpha 67.7 72.4 38.1 - 89.2 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Gross Alpha 66.4 72.4 38.1 - 89.2 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Gross Beta 47.6 54.8 37.5 - 61.7 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Radium-226 16.2 14.2 10.6 - 16.3 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Radium-226 16.3 14.2 10.6 - 16.3 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Radium-226 5 4.21 2.43 - 5.81 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Radium-228 4.44 4.21 2.43 - 5.81 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Radium-228 65.4 58.6 47.8 - 64.5 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Uranium (Nat) 56.4 58.6 47.8-64.5 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Uranium (Nat) 65.4 58.6 47.8 - 64.5 Not Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water µg/L Uranium (Nat) mass 97.6 86.2 70.3 - 94.9 Not Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water µg/L Uranium (Nat) mass 93.3 86.2 70.3 - 94.9 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Tritium 20000 21200 18600 - 23300 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Tritium 20200 21200 18600 - 23300 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Strontium-89 59.7 65.2 52.9 - 73.2 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Strontium-89 68.6 65.2 52.9 - 73.2 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Strontium-90 36.1 39.2 28.8 - 45.1 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Strontium-90 36.9 39.2 28.8 - 45.1 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Iodine-131 25.3 28.1 23.4 - 33.0 Acceptable ERA 1st / 2018 2/26/18 RAD-112 Water pCi/L Iodine-131 28.7 28.1 23.4 - 33.0 Acceptable EZA 1st / 2018 05/11/18 E12100 Cartridge pCi Iodine-131 9.20E+01 8.52E+01 0.97 Acceptable EZA 1st / 2018 05/11/18 E12101 Milk pCi/L Strontium-89 9.16E+01 9.01E+01 1.02 Acceptable EZA 1st / 2018 05/11/18 E12101 Milk pCi/L Strontium-90 8.00E+01 1.25E+02 0.64 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Iodine-131 1.05E+02 1.08E+02 0.97 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Cerium-141 7.23E+01 7.70E+01 0.94 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Cobalt-58 1.11E+02 1.14E+02 0.97 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Cobalt-60 1.90E+02 1.87E+02 1.02 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Chromium-51 3.00E+02 3.26E+02 0.92 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Cesium-134 1.58E+02 1.80E+02 0.88 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Cesium-137 1.75E+02 1.72E+02 1.02 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Manganese-54 1.36E+02 1.31E+02 1.04 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Iron-59 1.52E+02 1.39E+02 1.10 Acceptable EZA 1st / 2018 05/11/18 E12102 Milk pCi/L Zinc-65 2.73E+02 2.44E+02 1.12 Acceptable EZA 1st / 2018 05/11/18 E12103 Water pCi/L Iodine-131 9.37E+01 9.10E+01 1.03 Acceptable

-117-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation EZA 1st / 2018 05/11/18 E12103 Water pCi/L Cerium-141 7.86E+01 7.34E+01 1.07 Acceptable EZA 1st / 2018 05/11/18 E12103 Water pCi/L Chromium-51 3.44E+02 3.10E+02 1.11 Acceptable EZA 1st / 2018 05/11/18 E12103 Water pCi/L Cesium-134 1.61E+02 1.71E+02 0.94 Acceptable EZA 1st / 2018 05/11/18 E12103 Water pCi/L Cesium-137 1.64E+02 1.64E+02 1.00 Acceptable EZA 1st / 2018 05/11/18 E12103 Water pCi/L Cobalt-58 1.92E+02 1.78E+02 1.08 Acceptable EZA 1st / 2018 05/11/18 E12103 Water pCi/L Manganese-54 1.36E+02 1.25E+02 1.09 Acceptable EZA 1st / 2018 05/11/18 E12103 Water pCi/L Iron-59 1.48E+02 1.32E+02 1.12 Acceptable EZA 1st / 2018 05/11/18 E12103 Water pCi/L Zinc-65 2.53E+02 2.33E+02 1.09 Acceptable EZA 1st / 2018 05/11/18 E12103 Water pCi/L Cobalt-60 1.92E+02 1.78E+02 1.08 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Actinium-228 1300 1240 818 - 1560 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Americium-241 97 74.7 40.3 - 106 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Bismuth-212 1410 1240 355 - 1850 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Bismuth-214 1200 1760 845 - 2620 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Cesium-134 4780 5330 3640 - 6370 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Cesium-137 4150 4210 3180 - 5320 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Cobalt-60 7880 8060 6350 - 9950 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Lead-212 1210 1240 865 - 1570 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Lead-214 1470 1850 777 - 2910 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Plutonium-238 1460 1470 733 - 2230 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Plutonium-239 1240 1330 725 - 1910 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Potassium-40 10300 10600 7300 - 12700 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Strontium-90 2950 4500 1400 - 7010 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Thorium-234 2240 1800 680 - 3080 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-234 2190 1820 853 - 2380 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-234 1830 1820 853 - 2380 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-234 1160 1820 853 - 2380 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-238 1530 1800 988 - 2420 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-238 2000 1800 988 - 2420 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-238 2020 1800 988 - 2420 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-Total 4670 3700 2050 - 4780 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-Total 4210 3700 2050 - 4780 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-Total 4020 3700 2050 - 4780 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-Total 2690 3700 2050 - 4780 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil µg/kg U-Total (mass) 6030 5400 2440 - 7290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil µg/kg U-Total (mass) 4880 5400 2440 - 7290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil µg/kg U-Total (mass) 6050 5400 2440 - 7290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil µg/kg U-Total (mass) 6970 5400 2440 - 7290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Zinc-65 2150 1990 1590 - 2710 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Americium-241 3900 3880 2400 - 5480 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Cesium-134 2150 1950 1290 - 2600 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Cesium-137 2720 2160 1660 - 2910 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Cobalt-60 672 491 385 - 642 Not Acceptable

-118-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Curium-244 2620 2630 1480 - 3270 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Manganese-54 <32.9 <300 <300 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Plutonium-238 2370 2020 1400 - 2600 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Plutonium-239 4760 4160 2880 - 5270 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Potassium-40 37500 30900 23200 - 39100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Strontium-90 3220 3330 1880 - 4340 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-234 5220 4050 2850 - 5170 Not Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-238 5150 4010 2830 - 5020 Not Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-Total 10800 8240 5260 - 11100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. µg/kg U-Total (mass) 15500 12100 9290 - 15000 Not Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Zinc-65 3420 2400 1790 - 3560 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-Total 5690 6290 4260 - 7830 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-Total 6238 6290 4260 - 7830 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. µg/kg U-Total (mass) 8910 9250 6200 - 11700 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. µg/kg U-Total (mass) 8440 9250 6200 - 11700 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. µg/kg U-Total (mass) 9030 9250 6200 - 11700 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Zinc-65 907 853 615 - 1200 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Americium-241 80.6 76.4 47.1 - 103 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Cesium-134 1140 1100 700 - 1360 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Cesium-137 1490 1390 1040 - 1830 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Cobalt-60 1120 1030 797 - 1290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Iron-55 242 256 79.4 - 500 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Manganese-54 <7.53 <50.0 0.00 - 50.0 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Plutonium-238 54.1 54.3 37.2 - 71.4 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Plutonium-239 58.2 62 44.9 - 81.0 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Strontium-90 52.2 52.4 25.6 - 78.5 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-234 71.1 73.1 45.3 - 110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-234 79 73.1 45.3 - 110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-238 70.7 72.4 46.8 - 100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-238 77.1 72.4 46.8 - 100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-Total 154 149 82.5 - 227 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-Total 145 149 82.5 - 227 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-Total 159.5 149 82.5 - 227 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter µg/Filter U-Total (mass) 230 217 139 - 306 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter µg/Filter U-Total (mass) 212 217 139 - 306 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter µg/Filter U-Total (mass) 231 217 139 - 306 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Zinc-65 1160 984 705 - 1360 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Gross Alpha 112 85.5 28.6 - 133 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Gross Beta 54.9 45.2 28.6 - 65.9 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Americium-241 150 140 94.3 - 188 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Cesium-134 2380 2510 1840 - 2880 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Cesium-137 1480 1400 1190 - 1680 Acceptable

-119-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Cobalt-60 2570 2540 2210 - 2970 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Iron-55 923 984 587 - 1340 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Manganese-54 <6.36 <100 0.00 - 100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Plutonium-238 108 128 94.7 - 159 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Plutonium-239 73.3 85.8 66.6 - 108 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Strontium-90 685 714 465 - 944 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-234 82.1 90.3 67.8 - 116 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-234 92 90.3 67.8 - 116 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-234 87.1 90.3 67.8 - 116 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-238 86.7 89.5 68.2 - 110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-238 84.1 89.5 68.2 - 110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-238 98 89.5 68.2 - 110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-Total 181 184 135 - 238 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-Total 173 184 135 - 238 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-Total 180 184 135 - 238 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-Total 185 184 135 - 238 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water µg/L U-Total (mass) 270 268 214 - 324 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water µg/L U-Total (mass) 260 268 214 - 324 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water µg/L U-Total (mass) 252 268 214 - 324 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water µg/L U-Total (mass) 276 268 214 - 324 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Zinc-65 2160 1960 1630 - 2470 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Gross Alpha 125 89.5 31.8 - 139 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Gross Beta 59.6 61 34.9 - 90.4 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Tritium 18900 19400 13000 - 27700 Acceptable EZA 2nd/2018 07/07/18 E12100 Cartridge pCi Iodine-131 7.22E+01 7.16E+01 1.01 Acceptable EZA 2nd/2018 07/07/18 E12101 Milk pCi/L Strontium-89 9.58E+01 8.46E+01 1.13 Acceptable EZA 2nd/2018 07/07/18 E12101 Milk pCi/L Strontium-90 8.47E+00 1.14E+01 0.74 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Iodine-131 7.89E+01 7.19E+01 1.10 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Cerium-141 9.01E+01 8.22E+01 1.10 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Cobalt-58 9.26E+01 8.90E+01 1.04 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Cobalt-60 1.18E+02 1.13E+02 1.04 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Chromium-51 2.58E+02 2.39E+02 1.08 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Cesium-134 1.10E+02 1.14E+02 0.97 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Cesium-137 1.04E+02 9.88E+01 1.05 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Manganese-54 1.42E+02 1.30E+02 1.09 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Iron-59 8.87E+01 8.60E+01 1.03 Acceptable EZA 2nd/2018 07/07/18 E12102 Milk pCi/L Zinc-65 1.83E+02 1.57E+02 1.16 Acceptable EZA 2nd/2018 07/07/18 E12103 Water pCi/L Iodine-131 7.31E+01 7.44E+01 0.98 Acceptable EZA 2nd/2018 07/07/18 E12103 Water pCi/L Cerium-141 1.02E+02 8.58E+01 1.19 Acceptable EZA 2nd/2018 07/07/18 E12103 Water pCi/L Chromium-51 2.73E+02 2.49E+02 1.10 Acceptable EZA 2nd/2018 07/07/18 E12103 Water pCi/L Cesium-134 1.06E+02 1.19E+02 0.89 Acceptable EZA 2nd/2018 07/07/18 E12103 Water pCi/L Cesium-137 9.86E+01 1.03E+02 0.96 Acceptable

-120-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation EZA 2nd/2018 07/07/18 E12103 Water pCi/L Cobalt-58 9.76E+01 9.29E+01 1.05 Acceptable EZA 2nd/2018 07/07/18 E12103 Water pCi/L Manganese-54 1.47E+02 1.35E+02 1.09 Acceptable EZA 2nd/2018 07/07/18 E12103 Water pCi/L Iron-59 1.08E+02 8.97E+01 1.20 Acceptable EZA 2nd/2018 07/07/18 E12103 Water pCi/L Zinc-65 1.97E+02 1.64E+02 1.20 Acceptable EZA 2nd/2018 07/07/18 E12103 Water pCi/L Cobalt-60 1.22E+02 1.18E+02 1.03 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Americium-241 1.84 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Cesium-134 1.85 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Cesium-137 4.85 4.6 Sens. Eval.

- Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Cobalt-57 798 826 578-1074 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Cobalt-60 581 560 392-728 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Iron-55 67 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Manganese-54 1060 1010 707-1313 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Nickel-63 1.05 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Plutonium-238 42.7 45.2 31.6-58.8 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Pu-239/240 46.9 50.8 35.6-66.0 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Potassium-40 649 577 404-750 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Strontium-90 -1.08 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Technetium

-99 890 980 686-1274 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg U-234/233 58.9 52.9 37.0-68.8 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Uranium-238 134 141 99-183 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaS38 Soil Bq/Kg Zinc-65 1060 960 672-1248 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Americium-241 0.685 0.709 0.496-0.922 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Cesium-134 9.140 10.2 7.1-13.3 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Cesium-137 12.8 12.2 8.5-15.9 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Cobalt-57 -0.042 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Cobalt-60 12.1 11.5 8.1-15.0 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Hydrogen-3 1.14 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Iron-55 11.90 11.1 7.8-14.1 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Manganese-54 9.35E-04 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Nickel-63 14.5 14.0 9.8-18.2 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Plutonium-238 0.014 0.023 Sens. Eval.

- Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Pu-239/240 0.586 0.600 0.420-0.780 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Potassium-40 -0.23 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Radium-226 0.249 0.257 0.180-0.334 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Strontium-90 10.70 11.400 8.0-14.8 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Technetium

-99 3.84 4.4 3.06-5.68 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Uranium- 234/233 0.45 0.43 0.301-0.559 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Uranium-238 0.48 0.44 0.306-0.568 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-MaW38 Water Bq/L Zinc-65 15.7 14.30 0.0-18.6 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter ug/sample Uranium-235 0.076 0.0739 0.0517-0.0961 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter ug/sample Uranium-238 10.60 10.4 7.3-13.5 Acceptable

-121-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter ug/sample Uranium-Total 10.68 10.5 7.4-13.7 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Americium-241 0.0646 0.0670 0.047-0.087 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Cesium-134 0.72 0.675 0.473-0.878 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Cesium-137 -0.023 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Cobalt-57 1.22 1.18 0.83-1.53 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Cobalt-60 0.010 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Manganese-54 1.08 1.03 0.72-1.34 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Plutonium-238 0.0440 0.0445 0.0312-0.0579 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Pu-239/240 0.0010 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Strontium-90 0.840 1.010 0.71-1.31 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Uranium- 234/233 0.121 0.124 0.087-0.161 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Uranium-238 0.126 0.128 0.090-0.166 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdF38 Filter Bq/sample Zinc-65 1.54 1.33 0.93-1.73 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Americium-241 0.107 0.106 0.074-0.138 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Cesium-134 3.17 3.23 2.26-4.2 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Cesium-137 4.03 3.67 2.57-4.77 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Cobalt-57 4.76 4.42 3.09-5.75 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Cobalt-60 2.49 2.3 1.60-2.98 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Manganese-54 3.02 2.66 1.86-3.46 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Plutonium-238 0.0005 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Pu-239/240 0.0679 0.0770 0.054-0.1 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Strontium-90 0.61 0.675 0.473-0.878 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Uranium- 234/233 0.21 0.179 0.125-0.233 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Uranium-238 0.197 0.186 0.130-0.242 Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-RdV38 Veg. Bq/sample Zinc-65 0.02 False Pos Test

Acceptable MAPEP 2nd/2018 05/31/18 MAPEP- 18-XaW38 Water Bq/L Iodine-129 2.00 1.93 1.35-2.51 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Barium-133 28.5 25.6 19.9 - 29.4 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Cesium-134 15.9 15.7 11.4 - 18.2 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Cesium-137 196 192 173 - 213 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Cobalt-60 122 119 107 - 133 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Zinc-65 196 177 159 - 208 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Gross Alpha 15.5 16 7.79 - 22.6 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Gross Alpha 18.2 16 7.79 - 22.6 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Gross Beta 43.6 49 33.2 - 56.1 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Radium-226 8.44 9.08 6.81 - 10.6 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Radium-228 2.72 2.28 1.07 - 3.60 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Radium-228 3.3 2.28 1.07 - 3.60 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Uranium (Nat) 53.8 51.8 42.2 - 57.1 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Uranium (Nat) 50.3 51.8 42.2 - 57.1 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water µg/L Uranium (Nat) mass 80.3 75.5 61.5 - 83.2 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water µg/L Uranium (Nat) mass 78.36 75.5 61.5 - 83.2 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water µg/L Uranium (Nat) mass 77.8 75.5 61.5 - 83.2 Acceptable

-122-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Tritium 19900 20400 17900 - 22400 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Tritium 21200 20400 17900 - 22400 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Strontium-89 61.5 62.7 50.7 - 70.6 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Strontium-89 69 62.7 50.7 - 70.6 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Strontium-90 34.4 40.1 29.5 - 46.1 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Strontium-90 36.2 40.1 29.5 - 46.1 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Iodine-131 25.6 28.1 23.4 - 33.0 Acceptable ERA 3rd / 2018 08/23/18 RAD-114 Water pCi/L Iodine-131 28.7 28.1 23.4 - 33.0 Acceptable EZA 3rd/2018 11/12/18 E12240 Cartridge pCi Iodine-131 7.95E+01 8.03E+01 0.99 Acceptable EZA 3rd/2018 11/12/18 E12241 Milk pCi/L Strontium-89 8.57E+01 8.17E+01 1.05 Acceptable EZA 3rd/2018 11/12/18 E12241 Milk pCi/L Strontium-90 9.22E+00 1.48E+01 0.62 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Iodine-131 7.18E+01 5.82E+01 1.23 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cerium-141 1.43E+02 1.28E+02 1.12 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Chromium-51 2.54E+02 2.65E+02 0.96 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cesium-134 1.18E+02 1.23E+02 0.96 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cesium-137 1.53E+02 1.47E+02 1.04 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cobalt-58 1.54E+02 1.44E+02 1.07 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Manganese-54 1.84E+02 1.67E+02 1.09 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Iron-59 1.20E+02 1.19E+02 1.01 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Zinc-65 2.44E+02 2.01E+02 1.22 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cobalt-60 2.02E+02 1.90E+02 1.06 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Iodine-131 6.76E+01 6.25E+01 1.08 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cerium-141 1.48E+02 1.33E+02 1.11 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Chromium-51 2.92E+02 2.75E+02 1.06 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cesium-134 1.20E+02 1.28E+02 0.94 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cesium-137 1.64E+02 1.54E+02 1.07 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cobalt-58 1.53E+02 1.50E+02 1.02 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Manganese-54 1.91E+02 1.74E+02 1.1 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Iron-59 1.39E+02 1.24E+02 1.12 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Zinc-65 2.41E+02 2.09E+02 1.15 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cobalt-60 2.09E+02 1.98E+02 1.06 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Actinium-228 3740 3280 2030 - 4540 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Americium-241 891 937 459 - 1420 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Bismuth-212 3990 3400 1810 - 4990 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Bismuth-214 1310 1370 841 - 1900 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Cesium-134 5710 5400 3200 - 7600 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Cesium-137 4160 3910 2340 - 5480 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Cobalt-60 4940 4890 3410 - 6370 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Lead-212 4250 3380 2050 - 4720 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Lead-214 1590 1450 883 - 2020 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Manganese-54 <32.8 <1000 <1000 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Plutonium-238 1090 1150 662 - 1650 Acceptable

-123-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Plutonium-239 735 756 561 - 950 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Potassium-40 24800 24300 17300 - 31400 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Strontium-90 4580 4340 2240 - 6440 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Thorium-234 1610 1470 549 - 2390 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-234 1730 1050 105 - 2370 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-234 1230 1050 105 - 2370 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-234 1060 1050 105 - 2370 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-238 1210 1030 103 - 2740 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-238 1100 1030 103 - 2740 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-238 660 1030 103 - 2740 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-Total 2320 2030 203 - 4560 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-Total 1890 2030 203 - 4560 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-Total 2830 2030 203 - 4560 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg U-Total (mass) 2010 2420 242 - 6320 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg U-Total (mass) 3300 2420 242 - 6320 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil µg/kg U-Total (mass) 2010 2420 242 - 6320 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil µg/kg U-Total (mass) 3620 2420 242 - 6320 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil µg/kg Zinc-65 4310 4020 2650 - 5380 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Americium-241 1770 1750 1080 - 2470 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Cesium-134 2000 1970 1310 - 2620 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Cesium-137 692 613 471 - 825 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Cobalt-60 1930 1810 1420 - 2370 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Curium-244 4840 4840 2730 - 6020 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Manganese-54 <52.1 <300 <300 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Plutonium-238 3280 3240 2240 - 4180 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Plutonium-239 3170 3070 2120 - 3890 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Potassium-40 38600 34500 25900 - 43700 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Strontium-90 6220 5930 3340 - 7730 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Uranium-234 1800 1670 1170 - 2130 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Uranium-238 1780 1660 1170 - 2080 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Uranium-Total 3710 3390 2170 - 4570 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg U-Total (mass) 5360 4990 3830 - 6180 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Zinc-65 2380 2230 1660 - 3310 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Americium-241 62 64.1 45.8 - 85.5 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Cesium-134 862 921 597 - 1130 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Cesium-137 373 373 306 - 489 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Cobalt-60 1200 1130 960 - 1440 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Iron-55 899 910 332 - 1450 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Manganese-54 <5.41 <50.0 <50.0 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Plutonium-238 34.5 34.9 26.3 - 42.9 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Plutonium-239 11.7 11.2 8.37 - 13.5 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Strontium-90 87.6 89.4 56.5 - 122 Acceptable

-124-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-234 55.1 52.1 38.6 - 61.0 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-234 49 52.1 38.6 - 61.0 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-238 51.1 51.6 39.0 - 61.6 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-238 47.4 51.6 39.0 - 61.6 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-Total 102.5 106 77.4 - 126 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-Total 103 106 77.4 - 126 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter µg/Filter U-Total (mass) 153 156 125 - 183 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter µg/Filter U-Total (mass) 142 156 125 - 183 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Zinc-65 771 660 541 - 1010 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Gross Alpha 54.2 55.3 28.9 - 91.1 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Gross Beta 75.6 86.5 52.4 - 131 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Americium-241 164 172 118 - 220 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Cesium-134 2200 2310 1740 - 2540 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Cesium-137 910 898 769 - 1020 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Cesium-137 910 898 769 - 1020 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Cobalt-60 1630 1510 1300 - 1730 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Iron-55 2610 1580 928 - 2300 Not Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Manganese-54 <6.61 <100 <100 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Plutonium-238 108 141 84.8 - 183 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Plutonium-239 125 163 101 - 201 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Strontium-90 321 275 198 - 340 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-234 94 91.6 69.7 - 105 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-234 95.8 91.6 69.7 - 105 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-234 84.6 91.6 69.7 - 105 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-238 93.3 90.8 70.4 - 107 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-238 88.3 90.8 70.4 - 107 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-238 88.5 90.8 70.4 - 107 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-238 93.3 90.8 70.4 - 107 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-Total 184.3 187 146 - 213 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-Total 178 187 146 - 213 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water µg/L U-Total (mass) 265 273 221 - 310 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Zinc-65 1990 1790 1590 - 2260 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Gross Alpha 166 183 66.8 - 252 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Gross Beta 91 99.4 49.7 - 137 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Tritium 3030 3020 2280 - 3680 Acceptable EZA 4th/2018 01/23/19 E12346 Cartridge pCi Iodine-131 8.92E+01 8.98E+01 0.99 Acceptable EZA 4th/2018 01/23/19 E12347 Milk pCi/L Strontium-89 8.67E+01 9.19E+01 0.94 Acceptable EZA 4th/2018 01/23/19 E12347 Milk pCi/L Strontium-90 1.07E+01 1.33E+01 0.80 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Iodine-131 9.58E+01 9.33E+01 1.03 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cerium-141 1.37E+02 1.33E+02 1.03 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Chromium-51 2.66E+02 2.98E+02 0.89 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cesium-134 1.52E+02 1.71E+02 0.89 Acceptable

-125-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cesium-137 1.25E+02 1.21E+02 1.03 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cobalt-58 1.19E+02 1.19E+02 1.00 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Manganese-54 1.70E+02 1.54E+02 1.10 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Iron-59 1.25E+02 1.14E+02 1.09 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Zinc-65 2.75E+02 2.64E+02 1.04 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cobalt-60 2.12E+02 2.12E+02 1.00 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Iodine-131 8.19E+01 8.04E+01 1.02 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cerium-141 1.26E+02 1.24E+02 1.02 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Chromium-51 3.20E+02 2.78E+02 1.15 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cesium-134 1.41E+02 1.60E+02 0.88 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cesium-137 1.21E+02 1.13E+02 1.07 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cobalt-58 1.09E+02 1.11E+02 0.99 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Manganese-54 1.51E+02 1.44E+02 1.05 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Iron-59 1.16E+02 1.07E+02 1.09 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Zinc-65 2.76E+02 2.46E+02 1.12 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cobalt-60 2.06E+02 1.98E+02 1.04 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Americium-241 55.4 55.5 38.9-72.2 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Cesium-134 693.00 781 547-1015 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Cesium-137 598 572 400-744 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Cobalt-57 1080 958 671-1245 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Cobalt-60 595.000 608 426-790 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Iron-55 434 512 358-666 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Manganese-54 0.24 False Pos Test

Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Nickel-63 793 765 536-995 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Plutonium-238 55.2 57.0 39.9-74.1 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Pu-239/240 -0.33 0.34 Sens. Eval

- Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Potassium-40 556 566 396-736 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Strontium-90 162 193 135-251 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Technetium

-99 239 252 176-328 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg U-234/233 113 160 112-208 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Uranium-238 224 276 193-359 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaS39 Soil Bq/Kg Zinc-65 537.0 500 350-650 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Americium-241 0.007 False Pos Test

Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Cesium-134 7.94 8.7 6.1-11.3 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Cesium-137 7.41 6.9 4.8-9.0 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Cobalt-57 15.1 14.9 10.4-19.4 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Cobalt-60 0.0408 False Pos Test

Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Hydrogen-3 331 338 237-439 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Iron-55 8.41 9.0 6.3-11.7 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Manganese-54 13.2 12.5 8.8-16.3 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Nickel-63 6.14 7.0 4.9-9.1 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Plutonium-238 0.591 0.67 0.472-0.876 Acceptable

-126-PT Provider Quarter /

Year Report Received Date Sample Number Sample Media Units Analyte / Nuclide Reported Value Assigned Value Acceptance Limits Performance Evaluation MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Pu-239/240 0.801 0.928 0.650-1.206 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Potassium-40 0.884 False Pos Test Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Radium-226 0.566 0.44 0.309-0.575 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Strontium-90 8.24 9.41 6.59-12.23 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Technetium

-99 3.87 3.39 2.73-4.41 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Uranium- 234/233 2.13 2.11 1.48-2.74 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Uranium-238 2.170 2.180 1.53-2.83 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-MaW39 Water Bq/L Zinc-65 8.52 7.53 5.27-9.79 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter ug/sample Uranium-235 0.0936 0.0913 0.0650 -0.1208 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter ug/sample Uranium-238 13.4 12.7 8.9 - 16.5 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter ug/sample Uranium-Total 13.5 12.8 9.0 - 16.6 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Americium-241 0.0919 0.0913 0.0639 -0.1187 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Cesium-134 0.431 0.444 0.311 - 0.577 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Cesium-137 0.338 0.345 0.242 - 0.449 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Cobalt-57 0.598 0.592 0.414 - 0.770 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Cobalt-60 0.338 0.294 0.206 - 0.382 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Manganese-54 0.326 0.266 0.186 - 0.346 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Plutonium-238 0.000398 0.0011 Sens. Eval.** Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Pu-239/240 0.0672 0.0698 0.0489 -0.0907 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Strontium-90 -0.026 False Pos Test

Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Uranium 234/233 0.148 0.152 0.106 - 0.198 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Uranium-238 0.150 0.158 0.111 - 0.205 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdF38 Filter Bq/sample Zinc-65 0.229 0.201 Sens. Eval.** Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Americium-241 0.0851 0.0930 0.065-0.121 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Cesium-134 1.74 1.94 1.36-2.52 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Cesium-137 2.42 2.36 1.65-3.07 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Cobalt-57 3.24 3.31 2.32-4.30 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Cobalt-60 1.69 1.68 1.18-2.18 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Manganese-54 2.59 2.53 1.77-3.29 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Plutonium-238 0.0680 0.070 0.049-0.091 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Pu-239/240 0.0605 0.0620 0.043-0.081 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Strontium-90 0.718 0.791 0.554-1.028 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Uranium- 234/233 0.136 0.138 0.097-0.179 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Uranium-238 0.140 0.143 0.100-0.186 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-RdV38 Veg. Bq/sample Zinc-65 1.51 1.37 0.96-1.78 Acceptable MAPEP 4th/2018 12/03/18 MAPEP- 18-XaW39 Alk. Water Bq/L Iodine-129 1.63 1.62 1.13-2.11 Acceptable

This test is to monitor if laboratories are reporting false positives for those isotopes. Reporting below a certain activity exhibits the lab's acceptable performance.

- Sensitivity evaluations are introduced to examine the ability of the laboratory to determine activity levels for certain isotopes at low levels. Proper identification of the isotope is considered an acceptable performance.

-127-Table 6.1-2 20 18 ECKERT & ZIEGLER ANALYTICS PERFORMANCE EVALUATION RESULTS PT Provider Quarter / Year Report Received Date Sample Number Sample Media Unit Analyte / Nuclide GEL Value Known value Acceptance Range/ Ratio Evaluation EZA 1st / 2018 05/11/18 E12171 Cartridge pCi Iodine-131 9.20E+01 8.52E+01 0.97 Acceptable EZA 1st / 2018 05/11/18 E12172 Milk pCi/L Strontium-89 9.16E+01 9.01E+01 1.02 Acceptable EZA 1st / 2018 05/11/18 E12172 Milk pCi/L Strontium-90 8.00E+01 1.25E+02 0.64 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Iodine-131 1.05E+02 1.08E+02 0.97 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Cerium-141 7.23E+01 7.70E+01 0.94 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Cobalt-58 1.11E+02 1.14E+02 0.97 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Cobalt-60 1.90E+02 1.87E+02 1.02 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Chromium-51 3.00E+02 3.26E+02 0.92 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Cesium-134 1.58E+02 1.80E+02 0.88 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Cesium-137 1.75E+02 1.72E+02 1.02 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Manganese-54 1.36E+02 1.31E+02 1.04 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Iron-59 1.52E+02 1.39E+02 1.10 Acceptable EZA 1st / 2018 05/11/18 E12173 Milk pCi/L Zinc-65 2.73E+02 2.44E+02 1.12 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Iodine-131 9.37E+01 9.10E+01 1.03 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Cerium-141 7.86E+01 7.34E+01 1.07 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Chromium-51 3.44E+02 3.10E+02 1.11 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Cesium-134 1.61E+02 1.71E+02 0.94 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Cesium-137 1.64E+02 1.64E+02 1.00 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Cobalt-58 1.92E+02 1.78E+02 1.08 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Manganese-54 1.36E+02 1.25E+02 1.09 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Iron-59 1.48E+02 1.32E+02 1.12 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Zinc-65 2.53E+02 2.33E+02 1.09 Acceptable EZA 1st / 2018 05/11/18 E12174 Water pCi/L Cobalt-60 1.92E+02 1.78E+02 1.08 Acceptable EZA 2nd/2018 07/07/18 E12171 Cartridge pCi Iodine-131 7.22E+01 7.16E+01 1.01 Acceptable EZA 2nd/2018 07/07/18 E12172 Milk pCi/L Strontium-89 9.58E+01 8.46E+01 1.13 Acceptable EZA 2nd/2018 07/07/18 E12172 Milk pCi/L Strontium-90 8.47E+00 1.14E+01 0.74 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Iodine-131 7.89E+01 7.19E+01 1.10 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cerium-141 9.01E+01 8.22E+01 1.10 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cobalt-58 9.26E+01 8.90E+01 1.04 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cobalt-60 1.18E+02 1.13E+02 1.04 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Chromium-51 2.58E+02 2.39E+02 1.08 Acceptable

-128-PT Provider Quarter / Year Report Received Date Sample Number Sample Media Unit Analyte / Nuclide GEL Value Known value Acceptance Range/ Ratio Evaluation EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cesium-134 1.10E+02 1.14E+02 0.97 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cesium-137 1.04E+02 9.88E+01 1.05 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Manganese-54 1.42E+02 1.30E+02 1.09 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Iron-59 8.87E+01 8.60E+01 1.03 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Zinc-65 1.83E+02 1.57E+02 1.16 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Iodine-131 7.31E+01 7.44E+01 0.98 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cerium-141 1.02E+02 8.58E+01 1.19 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Chromium-51 2.73E+02 2.49E+02 1.10 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cesium-134 1.06E+02 1.19E+02 0.89 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cesium-137 9.86E+01 1.03E+02 0.96 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cobalt-58 9.76E+01 9.29E+01 1.05 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Manganese-54 1.47E+02 1.35E+02 1.09 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Iron-59 1.08E+02 8.97E+01 1.20 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Zinc-65 1.97E+02 1.64E+02 1.20 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cobalt-60 1.22E+02 1.18E+02 1.03 Acceptable EZA 3rd/2018 11/12/18 E12240 Cartridge pCi Iodine-131 7.95E+01 8.03E+01 0.99 Acceptable EZA 3rd/2018 11/12/18 E12241 Milk pCi/L Strontium-89 8.57E+01 8.17E+01 1.05 Acceptable EZA 3rd/2018 11/12/18 E12241 Milk pCi/L Strontium-90 9.22E+00 1.48E+01 0.62 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Iodine-131 7.18E+01 5.82E+01 1.23 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cerium-141 1.43E+02 1.28E+02 1.12 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Chromium-51 2.54E+02 2.65E+02 0.96 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cesium-134 1.18E+02 1.23E+02 0.96 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cesium-137 1.53E+02 1.47E+02 1.04 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cobalt-58 1.54E+02 1.44E+02 1.07 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Manganese-54 1.84E+02 1.67E+02 1.09 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Iron-59 1.20E+02 1.19E+02 1.01 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Zinc-65 2.44E+02 2.01E+02 1.22 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cobalt-60 2.02E+02 1.90E+02 1.06 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Iodine-131 6.76E+01 6.25E+01 1.08 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cerium-141 1.48E+02 1.33E+02 1.11 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Chromium-51 2.92E+02 2.75E+02 1.06 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cesium-134 1.20E+02 1.28E+02 0.94 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cesium-137 1.64E+02 1.54E+02 1.07 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cobalt-58 1.53E+02 1.50E+02 1.02 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Manganese-54 1.91E+02 1.74E+02 1.1 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Iron-59 1.39E+02 1.24E+02 1.12 Acceptable

-129-PT Provider Quarter / Year Report Received Date Sample Number Sample Media Unit Analyte / Nuclide GEL Value Known value Acceptance Range/ Ratio Evaluation EZA 3rd/2018 11/12/18 E12243 Water pCi/L Zinc-65 2.41E+02 2.09E+02 1.15 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cobalt-60 2.09E+02 1.98E+02 1.06 Acceptable EZA 4th/2018 01/23/19 E12346 Cartridge pCi Iodine-131 8.92E+01 8.98E+01 0.99 Acceptable EZA 4th/2018 01/23/19 E12347 Milk pCi/L Strontium-89 8.67E+01 9.19E+01 0.94 Acceptable EZA 4th/2018 01/23/19 E12347 Milk pCi/L Strontium-90 1.07E+01 1.33E+01 0.80 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Iodine-131 9.58E+01 9.33E+01 1.03 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cerium-141 1.37E+02 1.33E+02 1.03 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Chromium-51 2.66E+02 2.98E+02 0.89 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cesium-134 1.52E+02 1.71E+02 0.89 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cesium-137 1.25E+02 1.21E+02 1.03 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cobalt-58 1.19E+02 1.19E+02 1.00 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Manganese-54 1.70E+02 1.54E+02 1.10 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Iron-59 1.25E+02 1.14E+02 1.09 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Zinc-65 2.75E+02 2.64E+02 1.04 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cobalt-60 2.12E+02 2.12E+02 1.00 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Iodine-131 8.19E+01 8.04E+01 1.02 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cerium-141 1.26E+02 1.24E+02 1.02 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Chromium-51 3.20E+02 2.78E+02 1.15 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cesium-134 1.41E+02 1.60E+02 0.88 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cesium-137 1.21E+02 1.13E+02 1.07 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cobalt-58 1.09E+02 1.11E+02 0.99 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Manganese-54 1.51E+02 1.44E+02 1.05 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Iron-59 1.16E+02 1.07E+02 1.09 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Zinc-65 2.76E+02 2.46E+02 1.12 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cobalt-60 2.06E+02 1.98E+02 1.04 Acceptable

-130-Table 6.1-3 REMP INTRA

-LABORATORY DATA

SUMMARY

BIAS AND PRECISION BY MATRIX 2018 Total All REMP Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA MILK Gas Flow Sr 2nd count 34 0 39 0 Gas Flow Total Strontium 18 0 20 0 Gamma Spec Liquid RAD A

-013 with Ba, La 28 0 73 0 SOLID Gamma Spec Solid RAD A

-013 9 0 11 0 LSC Nickel 63 3 0 3 0 Gas Flow Sr 2nd count 4 0 6 0 Gas Flow Total Strontium 3 0 4 0 Gamma Spec Solid RAD A

-013 with Iodine 16 0 32 0 FILTER Gamma Iodine 131 RAD A

-013 0 0 1 0 Gamma Spec Filter RAD A

-013 0 0 1 0 Gas Flow Sr 2nd Count 6 0 6 0 Gross A & B 446 0 300 0 Gamma Spec Filter 27 0 66 0 LIQUID Alpha Spec Uranium 7 0 9 0 Tritium 155 0 205 0 LSC Iron-55 15 0 20 0 LSC Nickel 63 14 0 14 0 Gamma Iodine

-131 21 0 21 0 Alpha Spec Plutonium 9 0 9 0 Gas Flow Sr 2nd count 10 0 9 0 Alpha Spec Am241 Curium 9 0 9 0 Gas Flow Total Strontium 11 0 13 0 Gross Alpha Non Vol Beta 33 0 62 0 Gamma Spec Liquid RAD A

-013 with Ba, La 50 0 118 0 Gamma Spec Liquid RAD A

-013 with Iodine 21 0 92 0 TISSUE Gamma Spec Solid RAD A

-013 34 0 35 0 Gas Flow Sr 2nd count 10 0 9 0 Gas Flow Total Strontium 8 0 8 0 Gamma Spec Solid RAD A

-013 with Iodine 16 0 14 0 SEA WATER LSC Iron-55 1 0 1 0 -131-2018 Total All REMP Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA MILK LSC Nickel 63 1 0 1 0 Gas Flow Total Strontium 1 0 1 0 Gross Alpha Non Vol Beta 1 0 1 0 Gamma Spec Liquid RAD A

-013 with Iodine 1 0 1 0 VEGETATION Gamma Spec Solid RAD A

-013 9 0 11 0 Gas Flow Sr 2nd count 16 0 16 0 Gas Flow Total Strontium 2 0 2 0 Gamma Spec Solid RAD A

-013 with Iodine 75 0 91 0 AIR CHARCOAL Gamma Iodine 131 RAD A-013 356 0 561 0 Carbon-14 (Ascarite/Soda Lime Filter per Liter) 28 0 28 0 DRINKING WATER Tritium 29 0 34 0 LSC Iron-55 15 0 15 0 LSC Nickel 63 15 0 15 0 Gamma Iodine

-131 20 0 15 0 Gas Flow Sr 2nd count 6 0 5 0 Gas Flow Total Strontium 14 0 12 0 Gross Alpha Non Vol Beta 50 0 60 0 Gamma Spec Liquid RAD A

-013 with Ba, La 15 0 43 0 Gamma Spec Liquid RAD A

-013 with Iodine 0 0 8 0 Total 1672 0 2130 0 Note 1: The RPD must be 20 percent or less, if both samples are greater than 5 times the MDC. If both results are less than 5 times MDC, then the RPD must be equal to or less than 100%. If one result is above the MDC and the other is below the MDC, then the RPD can be calculated using the MDC for the result of the one below the MDC. The RPD must be 100% or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC, the RPD must be less than or equal to 20%. If both results are below MDC, then the limits on % RPD are not applicable.

-132-Table 6.1-4 ALL RADIOLOGICAL INTRA

-LABORATORY DATA

SUMMARY

BIAS AND PRECISION BY MATRIX 2018 Total All RAD Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA MILK Gamma Spec Liquid RAD A

-013 3 0 3 0 Gamma Iodine

-129 4 0 4 0 Gamma Iodine

-131 9 0 95 0 Gas Flow Sr 2nd count 34 0 39 0 Gas Flow Strontium 90 8 0 8 0 Gas Flow Total Strontium 18 0 20 0 Gamma Spec Liquid RAD A

-013 with Ba, La 28 0 73 0 Gamma Spec Liquid RAD A

-013 with Iodine 3 0 4 0 SOLID Gamma Percent Leach 5 0 0 0 Gas Flow Radium 228 85 0 91 0 Tritium 258 0 283 0 Tritium by Pyrolysis 9 0 19 0 Carbon-14 178 0 218 0 Carbon-14 by Pyrolysis 9 0 18 0 LSC Iron-55 105 0 107 0 Alpha Spec Polonium Solid 65 0 95 0 Gamma Nickel 59 RAD A

-022 114 0 120 0 LSC Chlorine

-36 in Solids 4 0 5 0 Gamma Spec Ra226 RAD A

-013 23 0 27 0 Gamma Spec Solid RAD A

-013 926 0 1282 0 LSC Nickel 63 186 0 190 0 LSC Plutonium 222 0 226 0 Technetium

-99 406 0 440 0 Gamma Spec Filter RAD A

-013 0 0 1 0 Gamma Spec Liquid RAD A

-013 3 0 3 0 Gross Alpha Beta Soil Leach 23 0 24 0 ICP-MS Technetium

-99 in Soil 7 0 4 0 LSC Selenium 79 14 0 13 0 Total Activity, 2 0 2 0 Tritium 16 0 14 0 Alpha Spec Am243 65 0 71 0 Gamma Iodine

-129 109 0 122 0 -133-2018 Total All RAD Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA Gross Alpha/Beta 0 0 2 0 Gas Flow Lead 210 2 0 4 0 Total Uranium KPA 3 0 8 0 Alpha Spec Uranium 424 0 499 0 LSC Promethium 147 12 0 18 0 LSC, Rapid Strontium 89 and 90 51 0 61 0 Alpha Spec Thorium 360 0 422 0 Gas Flow Radium 228 0 0 20 0 ICP-MS Uranium

-233, 234 in Solid 29 0 34 0 Alpha Spec Plutonium 455 0 488 0 ICP-MS Technetium

-99 Prep in Soil 7 0 7 0 LSC Calcium 45 1 0 1 0 Alpha Spec Neptunium 347 0 358 0 Alpha Spec Plutonium 114 0 128 0 Alpha Spec Radium 226 21 0 32 0 Gas Flow Sr 2nd count 22 0 30 0 Gas Flow Strontium 90 244 0 248 0 Gas Flow Total Radium 3 0 0 0 Lucas Cell Radium 226 107 0 126 0 Alpha Spec Am241 Curium 312 0 329 0 Alpha Spec Total Uranium 21 0 32 0 Gas Flow Total Strontium 89 0 92 0 Gross Alpha Beta (F,U) Am Calibration 4 0 4 0 Gross Alpha Non Vol Beta 3 0 3 0 ICP-MS Uranium

-233, 234 Prep in Solid 35 0 37 0 ICP-MS Uranium

-235, 236, 238 in Solid 48 0 34 0 Alpha Spec Polonium Solid 0 0 1 0 Gamma Spec Solid RAD A

-013 with Iodine 16 0 32 0 GFC Chlorine

-36 in Solids 7 0 11 0 Gamma Spec Solid RAD A

-013 (pCi/Sample) 7 0 7 0 Technetium

-99 3 0 3 0 Tritium 5 0 5 0 Alpha Spec Am241 (pCi/Sample) 6 0 8 0 ICP-MS Uranium

-234, 235, 236, 238 in Solid 154 0 145 0 ICP-MS Uranium

-235, 236, 238 Prep in Solid 34 0 36 0 Alpha Spec Thorium 3 0 6 0 Gross Alpha/Beta (Am/Cs Calibration) Solid 4 0 4 0 ICP-MS U-234, 235, 236, 238 Prep per sample 5 0 4 0 Alpha Spec Uranium 0 0 1 0 -134-2018 Total All RAD Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA Gross Alpha/Beta 352 0 478 0 Alpha Spec Neptunium 3 0 3 0 Alpha Spec Plutonium 4 0 6 0 Gas Flow Strontium 90 3 0 4 0 Gross Alpha/Beta (Americium Calibration) Solid 8 0 9 0 ICP-MS Uranium

-234, 235, 236, 238 Prep in Solid 73 0 70 0 Gross Alpha Beta (F,U) 14 0 17 0 FILTER Alpha Spec Uranium 7 0 17 0 Alpha Spec Polonium 0 0 3 0 Gamma I-131, filter 4 0 4 0 LSC Plutonium Filter 72 0 104 0 Tritium 52 0 165 0 Tritium by Pyrolysis 2 0 2 0 Carbon-14 15 0 85 0 Carbon-14 by Pyrolysis 2 0 2 0 ICP-MS Tc-99 in Filter 0 0 4 0 Nickel-63 0 0 30 0 LSC Iron-55 51 0 75 0 Gamma Nickel 59 RAD A

-022 66 0 86 0 Alpha Spec Californium FPL 0 0 1 0 Gamma Iodine 131 RAD A

-013 0 0 1 0 LSC Nickel 63 57 0 73 0 Technetium

-99 18 0 76 0 Gamma Spec Filter RAD A

-013 124 0 188 0 ICP-MS Tc-99 Prep in Filter 0 0 4 0 LSC Chlorine

-36 in Filters 0 0 1 0 Alphaspec Np Filter per Liter 17 0 34 0 Alphaspec Pu Filter per Liter 23 0 26 0 Gamma Iodine

-125 2 0 0 0 Gamma Iodine

-129 2 0 62 0 Alpha Spec Am243 12 0 18 0 Total Uranium KPA 3 0 8 0 Alpha Spec Uranium 55 0 86 0 LSC Promethium 147 3 0 6 0 LSC, Rapid Strontium 89 and 90 69 0 89 0 Alpha Spec Thorium 35 0 54 0 Gas Flow Radium 228 0 0 1 0 Alpha Spec Plutonium 72 0 121 0 ICP-MS Uranium

-233, 234 in Filter 0 0 3 0 -135-2018 Total All RAD Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA Alpha Spec Neptunium 54 0 69 0 Alpha Spec Plutonium 68 0 101 0 Alpha Spec Plutonium 6 0 7 0 Alpha Spec Polonium,(Filter/Liter) 0 0 2 0 Alpha Spec Radium 226 0 0 4 0 Alpha/Beta (Americium Calibration) 1 0 4 0 Gas Flow Sr 2nd Count 50 0 66 0 Gas Flow Strontium 90 67 0 98 0 LSC Plutonium 241 Filter per Liter 27 0 39 0 Lucas Cell Radium

-226 0 0 1 0 Alpha Spec Am241Curium 105 0 166 0 Gas Flow Total Strontium 0 0 1 0 ICP-MS Uranium

-233, 234 Prep in Filter 0 0 3 0 ICP-MS Uranium

-235, 236, 238 in Filter 0 0 4 0 Total Activity in Filter, 0 0 2 0 Alphaspec Am241 Curium Filter per Liter 24 0 40 0 Tritium 79 0 105 0 Gamma Spec Filter RAD A

-013 Direct Count 2 0 7 0 Carbon-14 27 0 32 0 GFC Chlorine

-36 in Filters PL 1 0 1 0 Gross A & B (Americium Calibration) Liquid 1 0 35 0 Direct Count

-Gross Alpha/Beta 70 0 0 0 Gross Alpha/Beta 30 0 40 0 ICP-MS Uranium

-234, 235, 236, 238 in Filter 4 0 10 0 ICP-MS Uranium

-235, 236, 238 Prep in Filter 0 0 4 0 Alpha Spec U 22 0 51 0 Gross A & B 491 0 353 0 LSC Iron-55 5 0 13 0 Technetium

-99 25 0 35 0 Gas Flow Sr

-90 21 0 41 0 LSC Nickel 63 30 0 48 0 Gamma Spec Charcoal 7 0 8 0 Gas Flow Pb

-210 14 0 32 0 Gas Flow Ra

-228 17 0 32 0 Gross Alpha Beta (Flame, Unflame) 5 0 5 0 Direct Count

- Alpha/Beta (Americium Calibration) 6 0 0 0 Gamma Iodine 129 29 0 30 0 ICP-MS Uranium

-234, 235, 236, 238 Prep in Filter 2 0 5 0 Gamma Spec Filter 64 0 122 0 Lucas Cell Ra

-226 14 0 25 0 -136-2018 Total All RAD Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA Alpha Spec Thorium 18 0 38 0 Gross Alpha Beta Am/Cs Cal(Fl, Unfl) 2 0 2 0 LIQUID Alpha Spec Uranium 456 0 686 0 Alpha Spec Polonium 10 0 18 0 Gas Flow Radium 228 1 0 1 0 Tritium 1080 0 1204 0 Carbon-14 146 0 170 0 Plutonium 90 0 102 0 Chlorine-36 in Liquids 4 0 4 0 Iodine-131 4 0 1 0 LSC Iron-55 89 0 136 0 Alpha Spec Polonium Solid 1 0 1 0 Gamma Nickel 59 RAD A

-022 10 0 29 0 Gamma Iodine 131 RAD A

-013 2 0 2 0 Gamma Spec Solid RAD A

-013 1 0 1 0 LSC Nickel 63 130 0 171 0 LSC Radon 222 14 0 12 0 Technetium

-99 442 0 514 0 Direct Tritium 1 0 1 0 Gamma Spec Liquid RAD A

-013 711 0 782 0 Alpha Spec Total U RAD A

-011 25 0 34 0 LSC Selenium 79 33 0 34 0 Total Activity, 3 0 4 0 Alpha Spec Am243 23 0 26 0 Gamma Iodine

-129 128 0 144 0 Gamma Iodine

-131 21 0 21 0 ICP-MS Technetium

-99 in Water 5 0 13 0 Gas Flow Lead 210 22 0 33 0 Total Uranium KPA 29 0 78 0 LSC Promethium 147 18 0 19 0 LSC, Rapid Strontium 89 and 90 6 0 10 0 Alpha Spec Polonium 1 0 0 0 Alpha Spec Thorium 212 0 292 0 Gas Flow Radium 228 377 0 416 0 Gas Flow Radium 228 9 0 8 0 Alpha Spec Plutonium 363 0 470 0 LSC Sulfur 35 13 0 13 0 Alpha Spec Neptunium 129 0 191 0 Alpha Spec Plutonium 23 0 28 0 -137-2018 Total All RAD Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA Alpha Spec Radium 226 39 0 47 0 Gas Flow Sr 2nd count 89 0 128 0 Gas Flow Strontium 90 458 0 559 0 Gas Flow Total Radium 58 0 87 0 ICP-MS Technetium

-99 Prep in Water 5 0 13 0 ICP-MS Uranium

-233, 234 in Liquid 16 0 17 0 LSC Calcium 45 12 0 12 0 Lucas Cell Radium 226 330 0 353 0 Lucas Cell Radium

-226 7 0 6 0 Chlorine-36 in Liquids 11 0 14 0 Alpha Spec Am241 Curium 294 0 390 0 Gas Flow Total Strontium 82 0 94 0 Gross Alpha Non Vol Beta 859 0 1095 0 LSC Phosphorus

-32 4 0 4 0 ICP-MS Uranium

-233, 234 Prep in Liquid 16 0 17 0 Tritium in Drinking Water by EPA 906.0 3 0 3 0 Gamma Spec Liquid RAD A

-013 with Ba, La 50 0 127 0 Gamma Spec Liquid RAD A

-013 with Iodine 110 0 188 0 Gas Flow Strontium 89 & 90 2 0 1 0 ICP-MS Uranium

-235, 236, 238 in Liquid 20 0 18 0 Gas Flow Total Alpha Radium 6 0 2 0 Gross Alpha Co

-precipitation 3 0 10 0 ICP-MS Uranium

-235, 236, 238 Prep in Liquid 18 0 19 0 Gross Alpha/Beta 0 0 4 0 ICP-MS Uranium-234, 235, 236, 238 in Liquid 100 0 104 0 Gross Alpha Beta (Flame, Unflame) 193 0 197 0 Gross Alpha Beta (Americium Calibration) Liquid 34 0 81 0 ICP-MS Uranium

-234, 235, 236, 238 Prep in Liquid 51 0 53 0 Alpha/Beta (Americium Calibration) Drinking Water 18 0 21 0 ECLS-R-GA NJ 48 Hr Rapid Gross Alpha 2 0 2 0 TISSUE Gamma Spec Solid RAD A

-013 48 0 63 0 Alpha Spec Uranium 4 0 7 0 Alpha Spec Plutonium 10 0 10 0 Gas Flow Sr 2nd count 10 0 9 0 Gas Flow Strontium 90 14 0 14 0 Alpha Spec Am241 Curium 4 0 4 0 Gas Flow Total Strontium 8 0 8 0 Gamma Spec Solid RAD A

-013 with Iodine 16 0 14 0 Gross Alpha/Beta 0 0 1 0 -138-2018 Total All RAD Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA SEA WATER LSC Iron-55 1 0 1 0 LSC Nickel 63 1 0 1 0 Gas Flow Total Strontium 1 0 1 0 Gross Alpha Non Vol Beta 1 0 1 0 Gamma Spec Liquid RAD A

-013 with Iodine 1 0 1 0 VEGETATION Carbon-14 5 0 5 0 Gamma Nickel 59 RAD A

-022 1 0 1 0 Gamma Spec Solid RAD A

-013 24 0 27 0 LSC Nickel 63 1 0 1 0 LSC Plutonium 1 0 1 0 Technetium

-99 1 0 1 0 Tritium 1 0 1 0 Gamma Iodine

-129 1 0 1 0 Gas Flow Lead 210 2 0 4 0 Alpha Spec Uranium 16 0 21 0 Alpha Spec Thorium 7 0 8 0 Alpha Spec Plutonium 17 0 15 0 Alpha Spec Neptunium 1 0 1 0 Alpha Spec Plutonium 1 0 1 0 Gas Flow Sr 2nd count 16 0 16 0 Gas Flow Strontium 90 15 0 13 0 Gas Flow Total Radium 3 0 3 0 Lucas Cell Radium 226 0 0 1 0 Alpha Spec Am241 Curium 7 0 5 0 Gas Flow Total Strontium 2 0 2 0 Gamma Spec Solid RAD A

-013 with Iodine 75 0 91 0 Gamma Spec Solid RAD A

-013 (pCi/Sample) 2 0 2 0 Alpha Spec Am241 (pCi/Sample) 2 0 2 0 Alpha Spec Uranium 0 0 2 0 Gross Alpha/Beta 3 0 4 0 Alpha Spec Plutonium 0 0 2 0 Gas Flow Strontium 90 4 0 2 0 AIR CHARCOAL Carbon-14 1 0 11 0 Carbon-14 1 0 1 0 Gamma Iodine 131 RAD A

-013 356 0 561 0 Gamma Iodine

-125 1 0 0 0 Gamma Iodine-129 29 0 9 0 -139-2018 Total All RAD Intra

-Laboratory Data Bias Criteria (+ /

- 25%) Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE CRITERIA CRITERIA CRITERIA CRITERIA Carbon-14 12 0 10 0 Carbon-14 (Ascarite/Soda Lime Filter per Liter) 28 0 28 0 Gamma Spec Charcoal 8 0 8 0 Gamma Iodine 129 12 0 12 0 Gamma Spec Filter 4 0 4 0 DRINKING WATER Alpha Spec Uranium 1 0 1 0 Tritium 29 0 34 0 Iodine-131 0 0 19 0 LSC Iron-55 15 0 15 0 LSC Nickel 63 15 0 15 0 LSC Radon 222 24 0 23 0 Gamma Spec Liquid RAD A

-013 6 0 7 0 Gamma Iodine

-129 2 0 3 0 Gamma Iodine

-131 20 0 15 0 Total Uranium KPA 5 0 10 0 Gas Flow Radium 228 35 0 46 0 Gas Flow Sr 2nd count 6 0 5 0 Gas Flow Strontium 90 7 0 17 0 Lucas Cell Radium

-226 32 0 40 0 Gamma Spec Drinking Water RAD A

-013 18 0 29 0 Gas Flow Total Strontium 14 0 12 0 Gross Alpha Non Vol Beta 147 0 181 0 Tritium in Drinking Water by EPA 906.0 48 0 62 0 Gamma Spec Liquid RAD A

-013 with Ba, La 15 0 43 0 Gamma Spec Liquid RAD A

-013 with Iodine 0 0 8 0 Gas Flow Strontium 89 & 90 8 0 6 0 Gas Flow Total Alpha Radium 0 0 1 0 Alpha/Beta (Americium Calibration) Drinking Water 15 0 14 0 ECLS-R-GA NJ 48 Hr Rapid Gross Alpha 6 0 5 0 Total 17276 0 21556 0 Note 1: The RPD must be 20 percent or less, if both samples are greater than 5 times the MDC. If both results are less than 5 times MDC, then the RPD must be equal to or less than 100%. If one result is above the MDC and the other is below the MDC, then the RPD can be calculated using the MDC for the result of the one below the MDC. The RPD must be 100% or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC, the RPD must be less than or equal to 20%. If both results are below MDC, then the limits on % RPD are not applicable.

-140-Table 6.1-5 20 18 CORRECTIVE ACTION REPORT

SUMMARY

CORRECTIVE ACTION ID#

& PE FAILURE DISPOSITION CARR180226

-1150 ISO Documentation of PT Failures in RAD 112 for Uranium Root Cause Analysis Natural Uranium (and mass) via KPA

- ASTM D1574

-97, -02 After a review of the data, it was determined that an unknown error occurred during the preparation and/or analysis of these samples because all quality control criteria were met for the batch. Both reported values fell slightly above the acceptance criteria of the study. Permanent Corrective/Preventive Actions or Improvements The laboratory must assume unidentified random errors caused the biases because all quality control criteria were met for the batches. The sample was re

-analyzed after the "Not Acceptable" rating was received and a result that fell within the acceptance range was obtained. CARR180522

-1154 ISO Documentation of PT Failures in MRAD-28 for Uranium

-234, Uranium

-238, Uranium-Total (mass), and Cobalt

-60 in Vegetation Root Cause Analysis Cobalt The data was reviewed and no anomalies noted. The Duplicate result of the original analysis met the acceptance criteria of the study. The laboratory analyzed a separate aliquot of the sample and while the Co

-60 was within limits, the results in general demonstrated a high bias.

Uranium The data was reviewed and no anomalies noted. A reanalysis was performed and results were within acceptance limits. A homogenization issue is suspected due to additional high bias in other alpha spec parameters.

Permanent Corrective/Preventive Actions or Improvements

The laboratory will continue to monitor the recoveries of these parameters in both methods for vegetation to ensure that there are no continued issues as well as evaluating the homogenization process. The sample was reanalyzed according to the same procedures as the original results and reanalysis results for the isotopes were within acceptance limits. -141-CORRECTIVE ACTION ID#

& PE FAILURE DISPOSITION CARR181120

-1190 ISO Documentation of PT Failure in MRAD- 29 for Fe-55 in water. Root Cause Analysis Iron-55 The data was reviewed and no errors were noted. The laboratory analyzed a separate aliquot of the sample which met replication criteria with in the analysis batch. All other QC met criteria. Due to the high bias being nearly twice the reference value, it is suspected that the laboratory recoded an incorrect aliquot during the analysis process. The typical aliquot for this PT analysis is 20 mL and an aliquot of 10 mL was recorded as the aliquot used.

A reanalysis was performed and results were within acceptance limits The laboratory will continue to monitor the recoveries of this parameters to ensure that there are no continued issues in the process.

Permanent Corrective/Preventive Actions or Improvements None needed at this time. The laboratory must assume unidentified random errors caused the biases because all quality control criteria were met for the batches

. -142-6.2 Environmental TLD QA Environmental dosimetry services for the reporting period of January

- December, 2018 were provided through Stanford Dosimetry, with TLD processing by the Environmental Dosimetry Company (EDC), Sterling, Massachusetts. The TLD systems at the Environmental Dosimetry Company (EDC) are calibrated and operated to ensure consistent and accurate evaluation of TLDs. The quality of the dosimetric results reported to EDC clients is ensured by in

-house performance testing and independent performance testing by EDC clients.

The purpose of the dosimetry quality assurance program is to provide performance documentation of the routine processing of EDC dosimeters. Performance testing provides a statistical measure of the bias and precision of dosimetry processing against a reliable standard, which in turn points out any trends or performance changes.

Dosimetry quality control tests are performed on EDC Panasonic 814 Environmental dosimeters. These tests include: (1) the in

-house testing program conducted by the EDC QA Officer and (2) independent test perform by EDC clients. In-house test are performed using six pairs of 814 dosimeters, a pair is reported as an individual result and six pairs are reported as the mean result.

Excluded from this report are instrumentation checks. Although instrumentation checks represent an important aspect of the quality assurance program, they are not included as process checks in this report. Instrumentation checks represent between 5

-10% of the TLDs processed.

Table 6.2-1 provides a summary of individual dosimeter results evaluated against the EDC internal acceptance criteria for high

-energy photons (Cs

-137) only.

The internal acceptance (tolerance) criteria for the Panasonic Environmental dosimeters are: +/- 15% for bias and +/- 12.8% for precision.

During this period, 100% (72/72) of the individual dosimeters, evaluated against these criteria met the tolerance limits for accuracy and 100% (72/72) met the criterion for precision.

Table 6.2-2 provides the Bias + Standard deviation results for each group (N=6) of dosimeters evaluated against the internal tolerance criteria. Overall, 100% (12/12) of the dosimeter sets evaluated against the internal tolerance performance criteria met these criteria.

Table 6.2-3 presents the independent blind spike results for irradiated dosimeters provided by client utilities during this annual period. All results passed the performance acceptance criterion.

Table 6.2-4 presents the independent blind duplicate results for dosimeters co

-located with field dosimeters provided by the client utility (Seabrook Station) during the annual period. All results passed the performance criteria of agreement to within 20% (within 3-sigma) of the field dosimeter.

TABLE 6.2-1 PERCENTAGE OF INDIVIDUAL DOSIMETERS THAT PASSED EDC INTERNAL CRITERIA JANUARY - DECEMBER 2018(1), (2) Dosimeter Type Number Tested % Passed Bias Criteria

% Passed Precision Criteria Panasonic Environmental 72 100 100 (1)This table summarizes results of tests conducted by EDC. (2)Environmental dosimeter results are free in air.

-143-TABLE 6.2-2 MEAN DOSIMETER ANALYSES (N=6)

JANUARY - DECEMBER 2018(1), (2) Process Date Exposure Level Mean Bias %

Standard Deviation

% Tolerance Limit +/-15% 4/30/2018 27 3.5 2.3 Pass 5/02/2018 44 8.0 1.5 Pass 5/03/2018 99 4.6 2.2 Pass 7/27/2018 55 1.0 0.8 Pass 7/30/2018 72 2.5 1.5 Pass 8/2/2018 113 4.0 1.7 Pass 10/29/2018 34 2.6 1.2 Pass 11/03/2018 67 1.7 1.5 Pass 11/17/2018 109 5.0 0.9 Pass 1/23/2019 107 1.3 1.1 Pass 1/26/2019 123 -0.3 2.0 Pass 2/04/2019 39 1.0 1.1 Pass (1) This table summarizes results of tests conducted by EDC for TLDs issued in 20 18. (2) Environmental dosimeter results are free in air.

TABLE 6.2-3

SUMMARY

OF INDEPENDENT BLIND SPIKE DOSIMETER TESTING JANUARY - DECEMBER 2018(1), (2) Issuance Period Client Mean Bias %

Standard Deviation %

Pass / Fail 1 st Qtr. 2018 Millstone 2.4 1.9 Pass 2nd Qtr.2018 Millstone 8.2 1.4 Pass 2nd Qtr.2018 Seabrook 2.6 0.9 Pass 2nd Qtr.2018 SONGS -3.9 1.3 Pass 3 rd Qtr. 2018 Millstone 2.6 0.9 Pass 3 rd Qtr. 2018 PSEG(PNNL)

-4.8 1.3 Pass 4 th Qtr.2018 Millstone 1.0 1.2 Pass 4 th Qtr.2018 Seabrook 6.8 1.1 Pass (1) Performance criterion is +/- 15%. (2) Blind spike irradiations using Cs

-137. -144-TABLE 6.2-4

SUMMARY

OF INDEPENDENT BLIND DUPLICATE DOSIMETER TESTING JANUARY - DECEMBER 2018(1) Issuance Period Client Number Tested Mean Bias % Standard Deviation % % Passed Precision Criteria 1 st Qtr. 2018 Seabrook 12 -3.7 4.2 100 2 nd Qtr. 2018 Seabrook 6 -2.5 2.8 100 3 rd Qtr. 2018 Seabrook 12 -2.2 3.1 100 4 th Qtr. 2018 Seabrook 6 1.4 2.5 100 (1) Performance criterion is Bias % within

+ 20% for each test dosimeter.

-145-7.0 Land Use Census The Offsite Dose Calculation Manual (ODCM Control 9.2.1) requires that a Land Use Census be conducted annually to identify the location of the nearest residence, milk animal and nearest garden of greater than 50 square meters producing broad leaf vegetation in each of the 16 meteorological sectors within fi ve miles of the plant. The 2018 census was completed in accordance with the requirements of the ODCM.

In 2018, a global positioning system was used to determine locations in the off

-site environs with respect to the center of the site (Unit 1 Containment).

The nearest resident, garden and milk animal locations identified in the 2018 Land Use Census and their distances are shown in Table 7.0-1. There were no changes in nearest resident locations from last year's land use census. There were five sectors which had a new nearest garden location different from last year's land use census. The new nearest garden locations are in the NE, SW, WNW, NW and NNW sectors, at 4,398 m, 1,734 m, 3,082 m, 3, 143 m and 2, 071 m respectively.

There were no new milk locations identified within 5 miles (8 km) of the plant that were different from those reported in last year's land use census. As a result, there still remains an insufficient number of milk producing locations to qualify milk sampling as a REMP media per the requirements of ODCM Table A.9.1-1.

The results of this year's census also showed that the sampling locations used in the REMP continue to ha ve the highest calculated dose commitment s of available locations. In 2018, broad leaf vegetation continued as part of the sample collection and analysis program due to the absence of sufficient milk producing locations to provide REMP samples. Sampling locations for broad leaf vegetation are at the site boundary near points of highest predicted D/Q. This option continues, as opposed to public owned vegetable gardens located by the land use census, in order to ensure adequate availability of samples for REMP analysis from locations with the highest potential for detecting plant effluents

.

-146-Table 7.0-1 2018 Land Use Census Results (Within 5 Miles)

Nearest Nearest Nearest Residence Garden Milk Animal Sector (km) (km) (km) N 2.7 8 3.9 9 NNE 3.09 3.20 NE 2.9 2 4.40 a ENE 2.3 1 2.53 E 2.56 --- ESE 2.4 3 --- SE 2.36 4.69 SSE 1.6 5 --- S 1.2 1 1.2 5 SSW 1.1 2 1.2 2 SW 1.1 3 1.73 a WSW 1.87 2.33 W 1.25 1.55 WNW 1.1 1 3.08 a NW 1.2 2 3.14 a 6.9 3 NNW 1.0 4 2.07 a 5.32 b a New locations in 2018. b Location has no milking goats. Therefore, it is not a viable REMP sampling location.

-147-

Attachment 1

Sample Analysis Data List for 2018

FLAGS A blank Flag field indicates that the measured activity is considered positive as it is greater than the MDC and has no other qualifiers noted.

U: Target isotope was analyzed for but not detected above the MDC and LLD.

UI: Uncertain identification for gamma spectroscopy.

X: Lab-specific qualifier:

(1) False positive due to the presence of radon gas in the water.

M: Reported result is less than the LLD and greater than the MDC.

DL: Measured MDC is greater than the LLD. DL*: Near miss of MDC being within round

-off difference of being greater than the LLD.

-148-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) AL 05 451248001 5/14/2018 Ac-228 2.22E+00 1.53E+01 2.87E+01 U AL 05 451248001 5/14/2018 Ag-108m -6.68E-01 1.39E+00 4.52E+00 U AL 05 451248001 5/14/2018 Ag-110m -6.75E-01 2.58E+00 8.65E+00 U AL 05 451248001 5/14/2018 Ba-140 2.84E+01 1.75E+01 5.56E+01 U AL 05 451248001 5/14/2018 Be-7 1.32E+02 3.51E+01 5.42E+01 AL 05 451248001 5/14/2018 Ce-141 -2.17E+01 7.22E+00 1.02E+01 U AL 05 451248001 5/14/2018 Ce-144 -1.32E+01 1.01E+01 3.02E+01 U AL 05 451248001 5/14/2018 Co-57 -9.44E-01 1.28E+00 4.01E+00 U AL 05 451248001 5/14/2018 Co-58 -4.16E-01 2.02E+00 6.59E+00 U AL 05 451248001 5/14/2018 Co-60 2.72E-01 2.29E+00 7.53E+00 U AL 05 451248001 5/14/2018 Cr-51 -9.28E+00 1.90E+01 6.32E+01 U AL 05 451248001 5/14/2018 Cs-134 4.17E+00 2.44E+00 7.21E+00 U AL 05 451248001 5/14/2018 Cs-137 1.87E+00 1.93E+00 6.23E+00 U AL 05 451248001 5/14/2018 Fe-59 2.99E+00 5.63E+00 1.89E+01 U AL 05 451248001 5/14/2018 I-131 1.02E+01 8.43E+00 2.79E+01 U AL 05 451248001 5/14/2018 K-40 8.55E+03 4.22E+02 5.95E+01 AL 05 451248001 5/14/2018 La-140 -3.54E+00 4.55E+00 1.22E+01 U AL 05 451248001 5/14/2018 Mn-54 -3.21E-01 1.78E+00 6.02E+00 U AL 05 451248001 5/14/2018 Nb-95 2.98E+00 2.34E+00 7.40E+00 U AL 05 451248001 5/14/2018 Ru-103 -8.16E-01 2.16E+00 7.00E+00 U AL 05 451248001 5/14/2018 Ru-106 -8.71E+00 1.64E+01 5.18E+01 U AL 05 451248001 5/14/2018 Sb-124 -5.26E-01 3.98E+00 1.26E+01 U AL 05 45 1248001 5/14/2018 Sb-125 3.69E+00 4.37E+00 1.45E+01 U AL 05 451248001 5/14/2018 Se-75 2.65E+00 2.29E+00 7.21E+00 U AL 05 451248001 5/14/2018 Th-228 4.17E+00 5.97E+00 1.09E+01 U AL 05 451248001 5/14/2018 Zn-65 -4.96E+00 6.29E+00 1.75E+01 U AL 05 451248001 5/14/2018 Zr-95 1.47E+00 3.90E+00 1.25E+01 U AL 05 464587001 11/12/2018 Ac-228 8.03E+01 5.85E+01 1.44E+02 U AL 05 464587001 11/12/2018 Ag-108m -2.69E+00 5.91E+00 1.91E+01 U AL 05 464587001 11/12/2018 Ag-110m -3.05E+00 8.89E+00 2.90E+01 U AL 05 464587001 11/12/2018 Ba-140 0.00E+00 9.08E+01 1.72E+02 U AL 05 464587001 11/12/2018 Be-7 2.20E+02 1.01E+02 2.20E+02 U AL 05 464587001 11/12/2018 Ce-141 -1.88E+01 1.18E+01 3.25E+01 U AL 05 464587001 11/12/2018 Ce-144 -1.32E+01 3.66E+01 1.17E+02 U AL 05 464587001 11/12/2018 Co-57 -1.33E+00 4.49E+00 1.45E+01 U AL 05 464587001 11/12/2018 Co-58 -3.28E+00 7.51E+00 2.26E+01 U AL 05 464587001 11/12/2018 Co-60 2.78E+00 7.29E+00 2.51E+01 U AL 05 464587001 11/12/2018 Cr-51 -3.20E+01 6.09E+01 2.00E+02 U AL 05 464587001 11/12/2018 Cs-134 1.06E+01 9.68E+00 3.29E+01 U AL 05 464587001 11/12/2018 Cs-137 -7.92E-01 8.03E+00 2.58E+01 U AL 05 464587001 11/12/2018 Fe-59 1.46E+01 2.31E+01 8.00E+01 U AL 05 464587001 11/12/2018 I-131 1.62E+01 1.44E+01 5.08E+01 U AL 05 464587001 11/12/2018 K-40 1.02E+04 6.84E+02 2.06E+02 AL 05 464587001 11/12/2018 La-140 -2.26E+01 2.03E+01 5.28E+01 U AL 05 464587001 11/12/2018 Mn-54 -1.01E+01 9.41E+00 2.46E+01 U AL 05 464587001 11/12/2018 Nb-95 -1.37E+00 9.56E+00 3.02E+01 U AL 05 464587001 11/12/2018 Ru-103 -1.61E+00 7.04E+00 2.29E+01 U AL 05 464587001 11/12/2018 Ru-106 2.67E+01 6.85E+01 2.30E+02 U AL 05 464587001 11/12/2018 Sb-124 -2.03E+00 1.57E+01 4.88E+01 U AL 05 464587001 11/12/2018 Sb-125 -1.02E+01 1.85E+01 5.91E+01 U -149-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) AL 05 464587001 11/12/2018 Se-75 -4.30E+00 8.84E+00 2.66E+01 U AL 05 464587001 11/12/2018 Th-228 4.41E+01 2.46E+01 4.99E+01 U AL 05 464587001 11/12/2018 Zn-65 1.76E+01 2.38E+01 8.23E+01 U AL 05 464587001 11/12/2018 Zr-95 -6.40E+00 1.45E+01 4.42E+01 U AL 55 451248002 5/14/2018 Ac-228 -2.42E+01 1.58E+01 3.12E+01 U AL 55 451248002 5/14/2018 Ag-108m 4.38E+00 2.18E+00 5.95E+00 U AL 55 451248002 5/14/2018 Ag-110m -5.34E+00 3.28E+00 9.61E+00 U AL 55 451248002 5/14/2018 Ba-140 -1.82E+01 2.03E+01 6.19E+01 U AL 55 451248002 5/14/2018 Be-7 0.00E+00 3.78E+01 6.51E+01 U AL 55 451248002 5/14/2018 Ce-141 -1.32E+00 3.55E+00 1.20E+01 U AL 55 451248002 5/14/2018 Ce-144 2.88E+00 1.05E+01 3.61E+01 U AL 55 451248002 5/14/2018 Co-57 -7.14E-01 1.40E+00 4.72E+00 U AL 55 451248002 5/14/2018 Co-58 4.52E+00 2.72E+00 8.77E+00 U AL 55 451248002 5/14/2018 Co-60 1.31E+00 2.22E+00 7.29E+00 U AL 55 451248002 5/14/2018 Cr-51 -1.03E+01 2.33E+01 7.59E+01 U AL 55 451248002 5/14/2018 Cs-134 3.34E+00 3.45E+00 8.23E+00 U AL 55 451248002 5/14/2018 Cs-137 3.00E+00 4.26E+00 6.83E+00 U AL 55 451248002 5/14/2018 Fe-59 2.51E-01 6.26E+00 2.06E+01 U AL 55 451248002 5/14/2018 I-131 -1.33E+00 9.80E+00 3.20E+01 U AL 55 451248002 5/14/2018 K-40 8.99E+03 4.57E+02 5.75E+01 AL 55 451248002 5/14/2018 La-140 -2.49E+00 6.18E+00 1.65E+01 U AL 55 451248002 5/14/2018 Mn-54 -1.76E+00 2.26E+00 7.30E+00 U AL 55 451248002 5/14/2018 Nb-95 4.79E-01 3.55E+00 8.39E+00 U AL 55 451248002 5/14/2018 Ru-103 1.72E+00 2.61E+00 8.43E+00 U AL 55 451248002 5/14/2018 Ru-106 1.21E+01 1.88E+01 6.01E+01 U AL 55 451248002 5/14/2018 Sb-124 6.53E+00 4.59E+00 1.58E+01 U AL 55 451248002 5/14/2018 Sb-125 -6.73E+00 5.33E+00 1.60E+01 U AL 55 451248002 5/14/2018 Se-75 -7.90E+00 4.38E+00 8.21E+00 U AL 55 451248002 5/14/2018 Th-228 0.00E+00 7.25E+00 1.23E+01 U AL 55 451248002 5/14/2018 Zn-65 2.32E+00 5.32E+00 1.76E+01 U AL 55 451248002 5/14/2018 Zr-95 6.99E+00 4.59E+00 1.50E+01 U AL 55 464587002 11/12/2018 Ac-228 5.44E+00 4.13E+01 1.07E+02 U AL 55 464587002 11/12/2018 Ag-108m 9.31E-01 4.63E+00 1.53E+01 U AL 55 464587002 11/12/2018 Ag-110m 1.75E-01 8.99E+00 2.99E+01 U AL 55 464587002 11/12/2018 Ba-140 -5.24E+00 3.37E+01 1.07E+02 U AL 55 464587002 11/12/2018 Be-7 1.36E+03 1.39E+02 1.33E+02 AL 55 464587002 11/12/2018 Ce-141 -1.99E+01 1.27E+01 3.20E+01 U AL 55 464587002 11/12/2018 Ce-144 -9.84E+00 3.55E+01 1.10E+02 U AL 55 464587002 11/12/2018 Co-57 1.39E+00 4.58E+00 1.47E+01 U AL 55 464587002 11/12/2018 Co-58 2.95E+00 6.17E+00 2.13E+01 U AL 55 464587002 11/12/2018 Co-60 5.39E+00 5.75E+00 2.05E+01 U AL 55 464587002 11/12/2018 Cr-51 9.84E+01 6.37E+01 2.14E+02 U AL 55 464587002 11/12/2018 Cs-134 -6.82E-01 7.11E+00 2.36E+01 U AL 55 464587002 11/12/2018 Cs-137 6.05E+00 5.87E+00 1.91E+01 U AL 55 464587002 11/12/2018 Fe-59 4.41E+01 2.25E+01 5.77E+01 U AL 55 464587002 11/12/2018 I-131 2.00E+01 1.44E+01 4.86E+01 U AL 55 464587002 11/12/2018 K-40 6.21E+03 4.49E+02 2.53E+02 AL 55 464587002 11/12/2018 La-140 -2.55E+01 1.43E+01 3.09E+01 U AL 55 464587002 11/12/2018 Mn-54 6.67E+00 6.33E+00 2.22E+01 U -150-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) AL 55 464587002 11/12/2018 Nb-95 1.31E+00 8.32E+00 2.54E+01 U AL 55 464587002 11/12/2018 Ru-103 -1.05E+01 6.96E+00 1.83E+01 U AL 55 464587002 11/12/2018 Ru-106 -8.64E+01 6.49E+01 1.73E+02 U AL 55 464587002 11/12/2018 Sb-124 -1.06E+01 1.20E+01 3.18E+01 U AL 55 464587002 11/12/2018 Sb-125 -1.25E+01 1.50E+01 4.48E+01 U AL 55 464587002 11/12/2018 Se-75 -7.00E+00 7.37E+00 2.29E+01 U AL 55 464587002 11/12/2018 Th-228 0.00E+00 2.16E+01 5.19E+01 U AL 55 464587002 11/12/2018 Zn-65 -2.16E+01 1.43E+01 3.53E+01 U AL 55 464587002 11/12/2018 Zr-95 7.98E+00 1.08E+01 3.70E+01 U -151-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 01 441050001 1/3/2018 BETA 2.50E-02 1.19E-03 7.02E-04 AP 01 441742001 1/16/2018 BETA 2.70E-02 1.29E-03 8.06E-04 AP 01 442981001 1/31/2018 BETA 2.89E-02 1.25E-03 6.58E-04 AP 01 443986001 2/14/2018 BETA 2.18E-02 1.00E-03 8.73E-04 AP 01 444963001 2/28/2018 BETA 2.65E-02 1.11E-03 9.85E-04 AP 01 446154001 3/12/2018 BETA 1.01E-02 8.65E-04 9.13E-04 AP 01 447013001 3/28/2018 BETA 1.84E-02 1.02E-03 1.04E-03 AP 01 450999001 3/28/2018 Ac-228 3.17E-04 4.80E-04 1.69E-03 U AP 01 450999001 3/28/2018 Ag-108m 1.01E-04 7.28E-05 2.55E-04 U AP 01 450999001 3/28/2018 Ag-110m -4.81E-05 1.46E-04 4.72E-04 U AP 01 450999001 3/28/2018 Ba-140 9.34E-02 9.86E-02 3.42E-01 U AP 01 450999001 3/28/2018 Be-7 1.03E-01 9.74E-03 9.59E-03 AP 01 450999001 3/28/2018 Ce-141 8.63E-04 8.84E-04 2.93E-03 U AP 01 450999001 3/28/2018 Ce-144 -2.15E-05 4.72E-04 1.40E-03 U AP 01 450999001 3/28/2018 Co-57 1.56E-04 1.07E-04 2.03E-04 U AP 01 450999001 3/28/2018 Co-58 2.20E-04 2.25E-04 8.05E-04 U AP 01 450999001 3/28/2018 Co-60 -1.58E-04 1.21E-04 2.90E-04 U AP 01 450999001 3/28/2018 Cr-51 4.93E-03 8.32E-03 2.89E-02 U AP 01 450999001 3/28/2018 Cs-134 5.00E-06 9.43E-05 3.01E-04 U AP 01 450999001 3/28/2018 Cs-137 -2.60E-05 8.54E-05 2.64E-04 U AP 01 450999001 3/28/2018 Fe-59 -1.04E-03 8.54E-04 2.16E-03 U AP 01 450999001 3/28/2018 I-131 0.00E+00 8.64E-01 0.00E+00 UI AP 01 450999001 3/28/2018 K-40 1.37E-03 1.77E-03 6.63E-03 U AP 01 450999001 3/28/2018 La-140 -4.04E-02 4.88E-02 1.13E-01 U AP 01 450999001 3/28/2018 Mn-54 -9.52E-06 1.30E-04 3.80E-04 U AP 01 450999001 3/28/2018 Nb-95 6.59E-04 3.60E-04 7.57E-04 U AP 01 450999001 3/28/2018 Ru-103 -9.99E-04 5.45E-04 1.30E-03 U AP 01 450999001 3/28/2018 Ru-106 -9.05E-04 9.80E-04 2.78E-03 U AP 01 450999001 3/28/2018 Sb-124 4.57E-04 8.33E-04 2.91E-03 U AP 01 450999001 3/28/2018 Sb-125 4.77E-05 2.34E-04 7.90E-04 U AP 01 450999001 3/28/2018 Se-75 1.52E-04 1.76E-04 6.19E-04 U AP 01 450999001 3/28/2018 Th-228 0.00E+00 3.59E-04 5.68E-04 U AP 01 450999001 3/28/2018 Zn-65 -4.11E-04 2.61E-04 5.78E-04 U AP 01 450999001 3/28/2018 Zr-95 6.12E-04 4.65E-04 1.65E-03 U AP 01 448060001 4/11/2018 BETA 2.40E-02 1.10E-03 1.13E-03 AP 01 449083001 4/27/2018 BETA 1.94E-02 9.33E-04 7.92E-04 AP 01 449980001 5/9/2018 BETA 2.00E-02 1.11E-03 1.15E-03 AP 01 451344001 5/23/2018 BETA 1.55E-02 9.11E-04 9.29E-04 AP 01 452120001 6/6/2018 BETA 1.75E-02 9.82E-04 9.46E-04 AP 01 453225001 6/20/2018 BETA 1.76E-02 9.91E-04 9.38E-04 AP 01 457762001 6/20/2018 Ac-228 6.37E-04 8.02E-04 2.82E-03 U AP 01 457762001 6/20/2018 Ag-108m 4.48E-05 1.02E-04 3.55E-04 U AP 01 457762001 6/20/2018 Ag-110m 2.76E-04 2.46E-04 9.38E-04 U AP 01 457762001 6/20/2018 Ba-140 7.08E-02 1.86E-01 6.43E-01 U AP 01 457762001 6/20/2018 Be-7 1.31E-01 1.55E-02 1.45E-02 AP 01 457762001 6/20/2018 Ce-141 -2.42E-03 1.73E-03 4.66E-03 U AP 01 457762001 6/20/2018 Ce-144 7.00E-04 6.81E-04 2.35E-03 U AP 01 457762001 6/20/2018 Co-57 3.47E-05 9.83E-05 3.09E-04 U -152-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 01 457762001 6/20/2018 Co-58 -5.59E-04 4.09E-04 8.57E-04 U AP 01 457762001 6/20/2018 Co-60 -1.87E-04 1.70E-04 3.85E-04 U AP 01 457762001 6/20/2018 Cr-51 2.45E-02 3.62E-02 5.16E-02 U AP 01 457762001 6/20/2018 Cs-134 -1.53E-04 1.74E-04 4.55E-04 U AP 01 457762001 6/20/2018 Cs-137 2.75E-05 1.52E-04 5.05E-04 U AP 01 457762001 6/20/2018 Fe-59 -1.60E-03 1.53E-03 3.84E-03 U AP 01 457762001 6/20/2018 I-131 -5.78E-01 2.31E+00 0.00E+00 U AP 01 457762001 6/20/2018 K-40 4.16E-03 2.31E-03 9.26E-03 U AP 01 457762001 6/20/2018 La-140 3.49E-02 9.84E-02 3.42E-01 U AP 01 457762001 6/20/2018 Mn-54 -1.74E-05 1.40E-04 4.34E-04 U AP 01 457762001 6/20/2018 Nb-95 2.99E-04 4.49E-04 1.57E-03 U AP 01 457762001 6/20/2018 Ru-103 -3.83E-04 9.37E-04 2.96E-03 U AP 01 457762001 6/20/2018 Ru-106 5.80E-04 1.20E-03 4.19E-03 U AP 01 457762001 6/20/2018 Sb-124 -1.53E-03 1.85E-03 5.63E-03 U AP 01 457762001 6/20/2018 Sb-125 -5.96E-04 3.18E-04 6.63E-04 U AP 01 457762001 6/20/2018 Se-75 -3.20E-06 2.74E-04 8.59E-04 U AP 01 457762001 6/20/2018 Th-228 4.55E-04 2.95E-04 8.45E-04 U AP 01 457762001 6/20/2018 Zn-65 -7.65E-04 5.14E-04 1.16E-03 U AP 01 457762001 6/20/2018 Zr-95 -3.14E-04 7.60E-04 2.25E-03 U AP 01 454068001 7/3/2018 BETA 2.30E-02 1.21E-03 1.08E-03 AP 01 455084001 7/18/2018 BETA 2.89E-02 1.26E-03 9.89E-04 AP 01 456459001 8/1/2018 BETA 1.76E-02 9.18E-04 8.53E-04 AP 01 457694001 8/15/2018 BETA 3.28E-02 1.25E-03 8.54E-04 AP 01 458640001 8/29/2018 BETA 3.23E-02 1.28E-03 8.68E-04 AP 01 459429001 9/11/2018 BETA 2.41E-02 1.13E-03 9.51E-04 AP 01 460470001 9/26/2018 BETA 1.53E-02 8.51E-04 8.39E-04 AP 01 465128001 9/26/2018 Ac-228 -6.10E-04 5.41E-04 1.48E-03 U AP 01 465128001 9/26/2018 Ag-108m 2.53E-05 6.13E-05 2.13E-04 U AP 01 465128001 9/26/2018 Ag-110m -2.47E-04 2.12E-04 5.44E-04 U AP 01 465128001 9/26/2018 Ba-140 9.63E-02 1.67E-01 5.77E-01 U AP 01 465128001 9/26/2018 Be-7 1.44E-01 1.36E-02 9.17E-03 AP 01 465128001 9/26/2018 Ce-141 1.09E-03 1.29E-03 4.28E-03 U AP 01 465128001 9/26/2018 Ce-144 2.10E-04 5.88E-04 1.94E-03 U AP 01 465128001 9/26/2018 Co-57 -8.36E-05 7.05E-05 2.02E-04 U AP 01 465128001 9/26/2018 Co-58 9.74E-05 1.96E-04 6.79E-04 U AP 01 465128001 9/26/2018 Co-60 -3.80E-05 1.19E-04 3.75E-04 U AP 01 465128001 9/26/2018 Cr-51 -9.46E-03 1.06E-02 3.32E-02 U AP 01 465128001 9/26/2018 Cs-134 1.12E-04 1.03E-04 3.70E-04 U AP 01 465128001 9/26/2018 Cs-137 -1.55E-05 7.78E-05 2.46E-04 U AP 01 465128001 9/26/2018 Fe-59 -8.11E-04 1.23E-03 3.76E-03 U AP 01 465128001 9/26/2018 I-131 -1.09E+00 1.63E+00 0.00E+00 U AP 01 465128001 9/26/2018 K-40 0.00E+00 2.22E-03 2.11E-03 U AP 01 465128001 9/26/2018 La-140 -6.29E-02 5.82E-02 1.32E-01 U AP 01 465128001 9/26/2018 Mn-54 -2.35E-04 1.32E-04 2.67E-04 U AP 01 465128001 9/26/2018 Nb-95 4.19E-04 3.55E-04 1.16E-03 U AP 01 465128001 9/26/2018 Ru-103 -4.01E-04 6.3 6E-04 1.97E-03 U AP 01 465128001 9/26/2018 Ru-106 3.05E-04 1.02E-03 3.41E-03 U AP 01 465128001 9/26/2018 Sb-124 -4.26E-05 6.95E-04 2.22E-03 U AP 01 465128001 9/26/2018 Sb-125 6.54E-04 3.16E-04 1.07E-03 U -153-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 01 465128001 9/26/2018 Se-75 -1.17E-04 2.31E-04 6.87E-04 U AP 01 465128001 9/26/2018 Th-228 2.52E-04 2.44E-04 5.92E-04 U AP 01 465128001 9/26/2018 Zn-65 1.13E-04 3.22E-04 1.12E-03 U AP 01 465128001 9/26/2018 Zr-95 -4.83E-04 6.30E-04 1.69E-03 U AP 01 461647001 10/10/2018 BETA 1.94E-02 9.71E-04 8.74E-04 AP 01 462687001 10/24/2018 BETA 1.93E-02 9.87E-04 9.05E-04 AP 01 463994001 11/7/2018 BETA 1.49E-02 8.64E-04 8.80E-04 AP 01 465452001 11/21/2018 BETA 1.96E-02 9.84E-04 9.78E-04 AP 01 466541001 12/5/2018 BETA 1.51E-02 8.44E-04 8.21E-04 AP 01 467531001 12/19/2018 BETA 2.82E-02 1.17E-03 9.38E-04 AP 01 469370001 12/19/2018 Ac-228 3.24E-04 4.68E-04 8.34E-04 U AP 01 469370001 12/19/2018 Ag-108m 4.61E-05 5.74E-05 1.98E-04 U AP 01 469370001 12/19/2018 Ag-110m 5.47E-05 1.30E-04 4.53E-04 U AP 01 469370001 12/19/2018 Ba-140 -6.42E-03 1.85E-02 5.85E-02 U AP 01 469370001 12/19/2018 Be-7 7.17E-02 6.70E-03 4.91E-03 AP 01 469370001 12/19/2018 Ce-141 -3.00E-04 4.96E-04 1.52E-03 U AP 01 469370001 12/19/2018 Ce-144 -3.63E-04 4.40E-04 1.32E-03 U AP 01 469370001 12/19/2018 Co-57 -8.31E-06 5.36E-05 1.57E-04 U AP 01 469370001 12/19/2018 Co-58 8.91E-05 1.50E-04 5.29E-04 U AP 01 469370001 12/19/2018 Co-60 -8.46E-05 7.39E-05 1.71E-04 U AP 01 469370001 12/19/2018 Cr-51 1.39E-03 3.87E-03 1.33E-02 U AP 01 469370001 12/19/2018 Cs-134 -2.63E-05 1.08E-04 3.14E-04 U AP 01 469370001 12/19/2018 Cs-137 -8.96E-05 1.21E-04 2.90E-04 U AP 01 469370001 12/19/2018 Fe-59 1.14E-04 5.53E-04 1.87E-03 U AP 01 469370001 12/19/2018 I-131 5.99E-02 5.09E-02 1.76E-01 U AP 01 469370001 12/19/2018 K-40 1.63E-03 1.98E-03 3.16E-03 U AP 01 469370001 12/19/2018 La-140 -1.78E-03 8.06E-03 2.49E-02 U AP 01 469370001 12/19/2018 Mn-54 2.98E-04 1.68E-04 3.56E-04 U AP 01 469370001 12/19/2018 Nb-95 -8.87E-06 1.55E-04 5.26E-04 U AP 01 469370001 12/19/2018 Ru-103 9.29E-05 2.45E-04 8.23E-04 U AP 01 469370001 12/19/2018 Ru-106 -5.71E-04 7.44E-04 2.16E-03 U AP 01 469370001 12/19/2018 Sb-124 -1.15E-04 4.87E-04 1.58E-03 U AP 01 469370001 12/19/2018 Sb-125 2.12E-05 1.82E-04 6.05E-04 U AP 01 469370001 12/19/2018 Se-75 -3.15E-05 1.25E-04 4.21E-04 U AP 01 469370001 12/19/2018 Th-228 9.61E-05 2.57E-04 3.79E-04 U AP 01 469370001 12/19/2018 Zn-65 2.43E-04 2.06E-04 7.50E-04 U AP 01 469370001 12/19/2018 Zr-95 1.18E-05 2.84E-04 9.70E-04 U AP 01 468040001 1/2/2019 BETA 2.17E-02 1.04E-03 9.61E-04 AP 02 441050002 1/3/2018 BETA 2.01E-02 1.06E-03 6.93E-04 AP 02 441742002 1/16/2018 BETA 2.68E-02 1.28E-03 7.98E-04 AP 02 442981002 1/31/2018 BETA 2.56E-02 1.18E-03 6.58E-04 AP 02 443986002 2/14/2018 BETA 1.91E-02 9.10E-04 7.54E-04 AP 02 444963002 2/28/2018 BETA 2.54E-02 1.07E-03 8.55E-04 AP 02 446154002 3/12/2018 BETA 8.93E-03 8.11E-04 8.99E-04 M AP 02 447013002 3/28/2018 BETA 1.60E-02 8.74E-04 8.30E-04 AP 02 450999002 3/28/2018 Ac-228 1.34E-03 7.72E-04 2.21E-03 U -154-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 02 450999002 3/28/2018 Ag-108m 2.07E-04 9.62E-05 2.82E-04 U AP 02 450999002 3/28/2018 Ag-110m 1.23E-04 1.79E-04 6.22E-04 U AP 02 450999002 3/28/2018 Ba-140 0.00E+00 1.56E-01 2.70E-01 U AP 02 450999002 3/28/2018 Be-7 9.09E-02 1.07E-02 9.49E-03 AP 02 450999002 3/28/2018 Ce-141 -2.06E-03 1.24E-03 3.44E-03 U AP 02 450999002 3/28/2018 Ce-144 -2.04E-04 5.73E-04 1.93E-03 U AP 02 450999002 3/28/2018 Co-57 -6.98E-05 7.17E-05 2.01E-04 U AP 02 450999002 3/28/2018 Co-58 -1.30 E-04 3.18E-04 9.73E-04 U AP 02 450999002 3/28/2018 Co-60 2.04E-04 1.45E-04 5.46E-04 U AP 02 450999002 3/28/2018 Cr-51 -1.30E-02 1.06E-02 3.10E-02 U AP 02 450999002 3/28/2018 Cs-134 -1.42E-04 1.11E-04 2.67E-04 U AP 02 450999002 3/28/2018 Cs-137 -9.84E-05 1.20E-04 3.49E-04 U AP 02 450999002 3/28/2018 Fe-59 -1.25E-03 1.20E-03 3.07E-03 U AP 02 450999002 3/28/2018 I-131 0.00E+00 8.87E-01 0.00E+00 UI AP 02 450999002 3/28/2018 K-40 -2.04E-03 1.78E-03 5.73E-03 U AP 02 450999002 3/28/2018 La-140 4.84E-03 4.81E-02 1.63E-01 U AP 02 450999002 3/28/2018 Mn-54 -3.08E-04 1.65E-04 3.50E-04 U AP 02 450999002 3/28/2018 Nb-95 3.95E-04 5.90E-04 9.50E-04 U AP 02 450999002 3/28/2018 Ru-103 4.07E-04 5.34E-04 1.86E-03 U AP 02 450999002 3/28/2018 Ru-106 1.49E-04 1.02E-03 3.37E-03 U AP 02 450999002 3/28/2018 Sb-124 -5.70E-05 1.12E-03 3.70E-03 U AP 02 450999002 3/28/2018 Sb-125 8.73E-05 2.44E-04 8.00E-04 U AP 02 450999002 3/28/2018 Se-75 -2.17E-04 1.99E-04 5.71E-04 U AP 02 450999002 3/28/2018 Th-228 5.21E-04 3.34E-04 6.16E-04 U AP 02 450999002 3/28/2018 Zn-65 -2.38E-04 2.72E-04 6.91E-04 U AP 02 450999002 3/28/2018 Zr-95 -8.14E-05 5.55E-04 1.76E-03 U AP 02 448060002 4/11/2018 BETA 1.49E-02 8.80E-04 9.35E-04 AP 02 449083002 4/27/2018 BETA 1.81E-02 8.93E-04 7.73E-04 AP 02 449980002 5/9/2018 BETA 2.14E-02 1.13E-03 1.03E-03 AP 02 451344002 5/23/2018 BETA 1.47E-02 8.72E-04 8.92E-04 AP 02 452120002 6/6/2018 BETA 1.48E-02 8.85E-04 8.95E-04 AP 02 453225002 6/20/2018 BETA 2.19E-02 1.18E-03 1.14E-03 AP 02 457762002 6/20/2018 Ac-228 -5.70E-04 5.08E-04 1.55E-03 U AP 02 457762002 6/20/2018 Ag-108m -1.31E-04 9.89E-05 2.61E-04 U AP 02 457762002 6/20/2018 Ag-110m 1.45E-04 2.79E-04 9.86E-04 U AP 02 457762002 6/20/2018 Ba-140 -1.38E-01 1.77E-01 5.01E-01 U A P 02 457762002 6/20/2018 Be-7 1.30E-01 1.43E-02 1.22E-02 AP 02 457762002 6/20/2018 Ce-141 8.59E-04 1.32E-03 4.62E-03 U AP 02 457762002 6/20/2018 Ce-144 -5.23E-04 6.27E-04 2.00E-03 U AP 02 457762002 6/20/2018 Co-57 1.22E-04 7.69E-05 2.72E-04 U AP 02 457762002 6/20/2018 Co-58 1.45E-04 3.20E-04 1.14E-03 U AP 02 457762002 6/20/2018 Co-60 -7.63E-05 2.14E-04 6.72E-04 U AP 02 457762002 6/20/2018 Cr-51 -8.04E-03 1.17E-02 3.07E-02 U AP 02 457762002 6/20/2018 Cs-134 -7.57E-05 1.42E-04 4.06E-04 U AP 02 457762002 6/20/2018 Cs-137 2.33E-04 1.26E-04 4.58E-04 U AP 02 457762002 6/20/2018 Fe-59 -6.78E-05 1.19E-03 3.93E-03 U AP 02 457762002 6/20/2018 I-131 -1.10E+00 2.16E+00 0.00E+00 U AP 02 457762002 6/20/2018 K-40 7.35E-04 2.04E-03 8.07E-03 U AP 02 457762002 6/20/2018 La-140 -6.69E-02 6.69E-02 1.47E-01 U -155-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 02 457762002 6/20/2018 Mn-54 -4.33E-05 1.42E-04 4.62E-04 U AP 02 457762002 6/20/2018 Nb-95 -7.79E-04 4.96E-04 1.11E-03 U AP 02 457762002 6/20/2018 Ru-103 7.08E-04 6.36E-04 2.28E-03 U AP 02 457762002 6/20/2018 Ru-106 -3.80E-04 1.29E-03 3.96E-03 U AP 02 457762002 6/20/2018 Sb-124 -5.37E-05 9.87E-04 3.16E-03 U AP 02 457762002 6/20/2018 Sb-125 1.83E-05 2.87E-04 9.46E-04 U AP 02 457762002 6/20/2018 Se-75 2.26E-06 2.27E-04 7.61E-04 U AP 02 457762002 6/20/2018 Th-228 3.60E-05 2.75E-04 6.79E-04 U AP 02 457762002 6/20/2018 Zn-65 9.62E-05 3.70E-04 1.28E-03 U AP 02 457762002 6/20/2018 Zr-95 -1.99E-04 4.57E-04 1.29E-03 U AP 02 454068002 7/3/2018 BETA 2.55E-02 1.20E-03 1.02E-03 AP 02 455084002 7/18/2018 BETA 2.55E-02 1.15E-03 8.88E-04 AP 02 456459002 8/1/2018 BETA 2.25E-02 1.21E-03 1.13E-03 AP 02 457694002 8/15/2018 BETA 3.25E-02 1.30E-03 9.77E-04 AP 02 458640002 8/29/2018 BETA 3.17E-02 1.30E-03 9.50E-04 AP 02 459429002 9/11/2018 BETA 2.86E-02 1.42E-03 1.30E-03 AP 02 460470002 9/26/2018 BETA 1.61E-02 9.07E-04 9.17E-04 AP 02 465128002 9/26/2018 Ac-228 7.54E-04 5.05E-04 1.51E-03 U AP 02 465128002 9/26/2018 Ag-108m 7.41E-05 7.18E-05 2.42E-04 U AP 02 465128002 9/26/2018 Ag-110m -4.03E-04 1.95E-04 4.37E-04 U AP 02 465128002 9/26/2018 Ba-140 -2.33E-01 1.90E-01 5.22E-01 U AP 02 465128002 9/26/2018 Be-7 1.46E-01 1.22E-02 1.01E-02 AP 02 465128002 9/26/2018 Ce-141 -1.77E-03 1.52E-03 4.06E-03 U AP 02 465128002 9/26/2018 Ce-144 1.27E-04 5.38E-04 1.58E-03 U AP 02 465128002 9/26/2018 Co-57 9.41E-05 7.83E-05 2.33E-04 U AP 02 465128002 9/26/2018 Co-58 -1.20E-04 2.91E-04 9.36E-04 U AP 02 465128002 9/26/2018 Co-60 -8.17E-06 1.25E-04 3.99E-04 U AP 02 465128002 9/26/2018 Cr-51 -1.83E-02 1.27E-02 3.66E-02 U AP 02 465128002 9/26/2018 Cs-134 -8.34E-07 1.16E-04 3.87E-04 U AP 02 465128002 9/26/2018 Cs-137 8.90E-05 9.95E-05 3.49E-04 U AP 02 465128002 9/26/2018 Fe-59 -1.16E-03 1.38E-03 4.09E-03 U AP 02 465128002 9/26/2018 I-131 0.00E+00 2.25E+00 0.00E+00 UI AP 02 465128002 9/26/2018 K-40 9.11E-03 2.32E-03 2.65E-03 AP 02 465128002 9/26/2018 La-140 1.19E-01 8.30E-02 3.03E-01 U AP 02 465128002 9/26/2018 Mn-54 -4.68E-05 1.11E-04 3.54E-04 U AP 02 465128002 9/26/2018 Nb-95 1.48E-04 2.77E-04 9.63E-04 U AP 02 465128002 9/26/2018 Ru-103 -5.66E-05 6.96E-04 1.88E-03 U AP 02 465128002 9/26/2018 Ru-106 8.65E-04 9.84E-04 3.27E-03 U AP 02 465128002 9/26/2018 Sb-124 7.68E-04 9.28E-04 3.33E-03 U AP 02 465128002 9/26/2018 Sb-125 -7.40E-05 2.18E-04 6.93E-04 U AP 02 465128002 9/26/2018 Se-75 2.04E-04 1.96E-04 6.66E-04 U AP 02 465128002 9/26/2018 Th-228 2.99E-04 2.29E-04 4.12E-04 U AP 02 465128002 9/26/2018 Zn-65 9.11E-05 2.54E-04 8.57E-04 U AP 02 465128002 9/26/2018 Zr-95 2.40E-04 4.39E-04 1.54E-03 U AP 02 461647002 10/10/2018 BETA 2.08E-02 1.05E-03 9.70E-04 AP 02 462687002 10/24/2018 BETA 1.79E-02 9.81E-04 9.71E-04 AP 02 463994002 11/7/2018 BETA 1.64E-02 9.78E-04 9.91E-04 AP 02 465452002 11/21/2018 BETA 2.00E-02 1.08E-03 1.10E-03 -156-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 02 466541002 12/5/2018 BETA 1.39E-02 8.97E-04 1.12E-03 AP 02 467531002 12/19/2018 BETA 3.33E-02 1.37E-03 1.10E-03 AP 02 469370002 12/19/2018 Ac-228 -1.50E-03 5.92E-04 1.17E-03 U AP 02 469370002 12/19/2018 Ag-108m -9.67E-05 8.87E-05 2.16E-04 U AP 02 469370002 12/19/2018 Ag-110m -9.15E-05 1.79E-04 5.57E-04 U AP 02 469370002 12/19/2018 Ba-140 3.26E-02 2.11E-02 6.82E-02 U AP 02 469370002 12/19/2018 Be-7 6.99E-02 6.73E-03 5.67E-03 AP 02 469370002 12/19/2018 Ce-141 9.00E-04 1.42E-03 1.60E-03 U AP 02 469370002 12/19/2018 Ce-144 4.71E-04 5.04E-04 1.63E-03 U AP 02 469370002 12/19/2018 Co-57 4.10E-05 6.10E-05 1.98E-04 U AP 02 469370002 12/19/2018 Co-58 6.78E-05 1.65E-04 5.40E-04 U AP 02 469370002 12/19/2018 Co-60 2.93E-04 1.62E-04 4.88E-04 U AP 02 469370002 12/19/2018 Cr-51 -4.40E-03 4.74E-03 1.44E-02 U AP 02 469370002 12/19/2018 Cs-134 1.33E-04 1.11E-04 4.00E-04 U AP 02 469370002 12/19/2018 Cs-137 -1.16E-04 9.77E-05 2.81E-04 U AP 02 469370002 12/19/2018 Fe-59 -3.43E-05 7.88E-04 2.55E-03 U AP 02 469370002 12/19/2018 I-131 -9.43E-03 6.01E-02 1.95E-01 U AP 02 469370002 12/19/2018 K-40 3.08E-03 1.90E-03 6.70E-03 U AP 02 469370002 12/19/2018 La-140 -4.94E-03 1.24E-02 3.32E-02 U AP 02 469370002 12/19/2018 Mn-54 1.36E-04 1.33E-04 4.68E-04 U AP 02 4 69370002 12/19/2018 Nb-95 7.57E-05 2.32E-04 7.96E-04 U AP 02 469370002 12/19/2018 Ru-103 3.13E-04 3.94E-04 1.26E-03 U AP 02 469370002 12/19/2018 Ru-106 -7.65E-04 9.81E-04 3.07E-03 U AP 02 469370002 12/19/2018 Sb-124 -5.53E-04 6.57E-04 1.85E-03 U AP 02 469370002 12/19/2018 Sb-125 0.00E+00 8.41E-04 7.92E-04 U AP 02 469370002 12/19/2018 Se-75 -3.04E-05 1.51E-04 4.99E-04 U AP 02 469370002 12/19/2018 Th-228 2.33E-04 2.58E-04 6.46E-04 U AP 02 469370002 12/19/2018 Zn-65 -1.39E-04 2.94E-04 8.95E-04 U AP 02 469370002 12/19/2018 Zr-95 3.80E-04 3.78E-04 1.25E-03 U AP 02 468040002 1/2/2019 BETA 2.43E-02 1.19E-03 1.12E-03 AP 03 441050003 1/3/2018 BETA 2.01E-02 1.06E-03 6.95E-04 AP 03 441742003 1/16/2018 BETA 2.52E-02 1.24E-03 8.01E-04 AP 03 442981003 1/31/2018 BETA 2.46E-02 1.15E-03 6.57E-04 AP 03 443986003 2/14/2018 BETA 1.99E-02 9.61E-04 9.60E-04 AP 03 444963003 2/28/2018 BETA 2.47E-02 1.08E-03 9.06E-04 AP 03 446154003 3/12/2018 BETA 1.26E-02 1.19E-03 1.35E-03 AP 03 447013003 3/28/2018 BETA 1.37E-02 7.93E-04 9.51E-04 AP 03 450999003 3/28/2018 Ac-228 6.79E-04 5.47E-04 1.91E-03 U AP 03 450999003 3/28/2018 Ag-108m 4.43E-05 8.26E-05 2.79E-04 U AP 03 450999003 3/28/2018 Ag-110m -2.11E-04 1.74E-04 4.56E-04 U AP 03 450999003 3/28/2018 Ba-140 5.26E-02 1.03E-01 3.47E-01 U AP 03 450999003 3/28/2018 Be-7 9.14E-02 9.73E-03 8.05E-03 AP 03 450999003 3/28/2018 Ce-141 -1.21E-03 1.13E-03 3.17E-03 U AP 03 450999003 3/28/2018 Ce-144 7.66E-04 5.61E-04 1.83E-03 U AP 03 450999003 3/28/2018 Co-57 2.09E-05 7.31E-05 2.34E-04 U AP 03 450999003 3/28/2018 Co-58 -1.71E-04 3.50E-04 9.59E-04 U AP 03 450999003 3/28/2018 Co-60 5.49E-06 1.43E-04 4.65E-04 U -157-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 03 450999003 3/28/2018 Cr-51 2.66E-03 8.93E-03 3.03E-02 U AP 03 450999003 3/28/2018 Cs-134 2.36E-06 1.12E-04 3.77E-04 U AP 03 450999003 3/28/2018 Cs-137 -4.16E-05 9.08E-05 2.68E-04 U AP 03 450999003 3/28/2018 Fe-59 8.89E-04 1.07E-03 3.82E-03 U AP 03 450999003 3/28/2018 I-131 -7.23E-01 8.28E-01 0.00E+00 U AP 03 450999003 3/28/2018 K-40 1.74E-03 1.76E-03 6.45E-03 U AP 03 450999003 3/28/2018 La-140 6.28E-02 3.99E-02 1.60E-01 U AP 03 450999003 3/28/2018 Mn-54 -8.11E-06 1.33E-04 4.45E-04 U AP 03 450999003 3/28/2018 Nb-95 -1.08E-04 3.47E-04 1.09E-03 U AP 03 450999003 3/28/2018 Ru-103 1.70E-04 6.27E-04 1.87E-03 U AP 03 450999003 3/28/2018 Ru-106 2.21E-03 1.30E-03 4.43E-03 U AP 03 450999003 3/28/2018 Sb-124 -2.64E-04 8.25E-04 2.59E-03 U AP 03 450999003 3/28/2018 Sb-125 1.98E-04 2.65E-04 9.06E-04 U AP 03 450999003 3/28/2018 Se-75 5.83E-05 1.78E-04 6.08E-04 U AP 03 450999003 3/28/2018 Th-228 1.34E-04 1.71E-04 6.07E-04 U AP 03 450999003 3/28/2018 Zn-65 1.08E-04 2.29E-04 8.10E-04 U AP 03 450999003 3/28/2018 Zr-95 -6.18E-04 5.20E-04 1.44E-03 U AP 03 448060003 4/11/2018 BETA 2.63E-02 1.23E-03 1.10E-03 AP 03 449083003 4/27/2018 BETA 1.90E-02 8.67E-04 7.29E-04 AP 03 449980003 5/9/2018 BETA 2.50E-02 1.30E-03 1.26E-03 AP 03 451344003 5/23/2018 BETA 1.63E-02 9.71E-04 1.02E-03 AP 03 452120003 6/6/2018 BETA 1.64E-02 9.95E-04 1.06E-03 AP 03 453225003 6/20/2018 BETA 1.83E-02 9.56E-04 8.65E-04 AP 03 457762003 6/20/2018 Ac-228 2.30E-04 5.91E-04 2.19E-03 U AP 03 457762003 6/20/2018 Ag-108m -8.79E-05 9.74E-05 2.63E-04 U AP 03 457762003 6/20/2018 Ag-110m 2.72E-06 2.17E-04 7.33E-04 U AP 03 457762003 6/20/2018 Ba-140 1.09E-01 2.13E-01 7.38E-01 U AP 03 457762003 6/20/2018 Be-7 9.33E-02 1.20E-02 1.42E-02 AP 03 457762003 6/20/2018 Ce-141 -4.36E-04 1.29E-03 4.14E-03 U AP 03 457762003 6/20/2018 Ce-144 2.09E-04 5.40E-04 1.85E-03 U AP 03 4577620 03 6/20/2018 Co-57 -1.88E-04 8.79E-05 2.00E-04 U AP 03 457762003 6/20/2018 Co-58 -9.17E-05 2.99E-04 9.62E-04 U AP 03 457762003 6/20/2018 Co-60 -1.45E-04 1.87E-04 5.04E-04 U AP 03 457762003 6/20/2018 Cr-51 -1.16E-02 1.35E-02 4.19E-02 U AP 03 457762003 6/20/2018 Cs-134 3.04E-04 1.37E-04 5.46E-04 U AP 03 457762003 6/20/2018 Cs-137 -5.06E-05 1.19E-04 3.55E-04 U AP 03 457762003 6/20/2018 Fe-59 1.38E-03 2.27E-03 7.68E-03 U AP 03 457762003 6/20/2018 I-131 0.00E+00 2.25E+00 0.00E+00 UI AP 03 457762003 6/20/2018 K-40 3.16E-03 2.52E-03 9.87E-03 U AP 03 457762003 6/20/2018 La-140 1.04E-02 1.02E-01 3.49E-01 U AP 03 457762003 6/20/2018 Mn-54 3.04E-06 1.37E-04 4.67E-04 U AP 03 457762003 6/20/2018 Nb-95 -5.95E-04 5.60E-04 1.48E-03 U AP 03 457762003 6/20/2018 Ru-103 -1.20E-03 7.51E-04 1.72E-03 U AP 03 457762003 6/20/2018 Ru-106 2.90E-03 1.30E-03 4.88E-03 U AP 03 457762003 6/20/2018 Sb-124 3.62E-05 7.85E-04 2.67E-03 U AP 03 457762003 6/20/2018 Sb-125 -1.88E-04 3.40E-04 9.33E-04 U AP 03 457762003 6/20/2018 Se-75 4.91E-05 1.94E-04 6.32E-04 U AP 03 457762003 6/20/2018 Th-228 4.14E-04 3.62E-04 8.00E-04 U AP 03 457762003 6/20/2018 Zn-65 2.69E-04 4.34E-04 1.55E-03 U -158-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 03 457762003 6/20/2018 Zr-95 8.11E-04 7.98E-04 2.84E-03 U AP 03 454068003 7/3/2018 BETA 2.96E-02 1.36E-03 1.18E-03 AP 03 455084003 7/18/2018 BETA 2.13E-02 9.76E-04 7.87E-04 AP 03 456459003 8/1/2018 BETA 2.08E-02 1.02E-03 8.30E-04 AP 03 457694003 8/15/2018 BETA 4.18E-02 1.55E-03 1.07E-03 AP 03 458640003 8/29/2018 BETA 3.02E-02 1.19E-03 8.49E-04 AP 03 459429003 9/10/2018 BETA 2.72E-02 1.23E-03 9.53E-04 AP 03 465128003 9/26/2018 Ac-228 -6.21E-04 6.45E-04 1.96E-03 U AP 03 465128003 9/26/2018 Ag-108m 8.38E-05 1.03E-04 3.69E-04 U AP 03 465128003 9/26/2018 Ag-110m -4.99E-04 3.01E-04 6.17E-04 U AP 03 465128003 9/26/2018 Ba-140 8.13E-02 2.21E-01 7.67E-01 U AP 03 465128003 9/26/2018 Be-7 1.40E-01 1.69E-02 1.12E-02 AP 03 465128003 9/26/2018 Ce-141 -8.44E-06 1.58E-03 5.07E-03 U AP 03 465128003 9/26/2018 Ce-144 6.67E-04 7.00E-04 2.37E-03 U AP 03 465128003 9/26/2018 Co-57 7.78E-05 8.62E-05 2.94E-04 U AP 03 465128003 9/26/2018 Co-58 -8.49E-04 4.41E-04 7.49E-04 U AP 03 465128003 9/26/2018 Co-60 1.21E-04 1.89E-04 6.89E-04 U AP 03 465128003 9/26/2018 Cr-51 8.00E-03 1.47E-02 5.22E-02 U AP 03 465128003 9/26/2018 Cs-134 7.05E-05 1.13E-04 4.11E-04 U AP 03 465128003 9/26/2018 Cs-137 1.64E-04 1.40E-04 5.08E-04 U AP 03 465128003 9/26/2018 Fe-59 -1.31E-03 1.23E-03 2.51E-03 U AP 03 465128003 9/26/2018 I-131 0.00E+00 2.60E+00 0.00E+00 UI AP 03 465128003 9/26/2018 K-40 4.18E-03 2.78E-03 1.08E-02 U AP 03 465128003 9/26/2018 La-140 -3.67E-02 6.82E-02 1.88E-01 U AP 03 465128003 9/26/2018 Mn-54 4.20E-05 1.81E-04 6.07E-04 U AP 03 465128003 9/26/2018 Nb-95 -4.13E-05 5.50E-04 1.78E-03 U AP 03 465128003 9/26/2018 Ru-103 -6.03E-04 9.15E-04 2.82E-03 U AP 03 465128003 9/26/2018 Ru-106 -6.16E-04 1.55E-03 4.88E-03 U AP 03 465128003 9/26/2018 Sb-124 -1.11E-03 1.17E-03 2.71E-03 U AP 03 465128003 9/26/2018 Sb-125 1.90E-04 3.22E-04 1.14E-03 U AP 03 465128003 9/26/2018 Se-75 2.55E-04 2.54E-04 8.10E-04 U AP 03 465128003 9/26/2018 Th-228 3.36E-05 2.40E-04 8.12E-04 U AP 03 465128003 9/26/2018 Zn-65 -4.08E-04 3.78E-04 8.33E-04 U AP 03 465128003 9/26/2018 Zr-95 5.35E-04 5.78E-04 2.16E-03 U AP 03 461647003 10/10/2018 BETA 2.08E-02 1.06E-03 9.77E-04 AP 03 462687003 10/24/2018 BETA 1.78E-02 8.77E-04 7.94E-04 AP 03 463994003 11/7/2018 BETA 1.36E-02 7.85E-04 8.15E-04 AP 03 465452003 11/21/2018 BETA 1.60E-02 8.41E-04 8.17E-04 AP 03 466541003 12/5/2018 BETA 1.48E-02 8.84E-04 9.73E-04 AP 03 467531003 12/19/2018 BETA 2.47E-02 1.06E-03 9.16E-04 AP 03 469370003 12/19/2018 Ac-228 6.15E-04 5.43E-04 1.79E-03 U AP 03 469370003 12/19/2018 Ag-108m -5.94E-05 7.48E-05 2.24E-04 U AP 03 469370003 12/19/2018 Ag-110m 1.46E-05 1.40E-04 4.68E-04 U AP 03 469370003 12/19/2018 Ba-140 -4.58E-02 2.30E-02 5.04E-02 U AP 03 469370003 12/19/2018 Be-7 5.89E-02 5.98E-03 6.32E-03 AP 03 469370003 12/19/2018 Ce-141 2.22E-04 4.95E-04 1.58E-03 U AP 03 469370003 12/19/2018 Ce-144 4.59E-04 4.40E-04 1.43E-03 U -159-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 03 469370003 12/19/2018 Co-57 2.00E-05 6.08E-05 1.95E-04 U AP 03 469370003 12/19/2018 Co-58 2.43E-04 2.04E-04 7.25E-04 U AP 03 469370003 12/19/2018 Co-60 -5.06E-05 1.08E-04 3.18E-04 U AP 03 469370003 12/19/2018 Cr-51 3.90E-04 3.57E-03 1.19E-02 U AP 03 469370003 12/19/2018 Cs-134 1.21E-04 1.18E-04 4.18E-04 U AP 03 469370003 12/19/2018 Cs-137 2.17E-04 1.10E-04 3.85E-04 U AP 03 469370003 12/19/2018 Fe-59 2.37E-04 5.88E-04 2.00E-03 U AP 03 469370003 12/19/2018 I-131 3.14E-02 6.64E-02 2.23E-01 U AP 03 469370003 12/19/2018 K-40 2.08E-03 1.72E-03 6.25E-03 U AP 03 469370003 12/19/2018 La-140 1.81E-02 9.06E-03 3.42E-02 U AP 03 469370003 12/19/2018 Mn-54 -4.73E-05 8.89E-05 2.75E-04 U AP 03 469370003 12/19/2018 Nb-95 1.58E-04 2.12E-04 7.45E-04 U AP 03 469370003 12/19/2018 Ru-103 -2.15E-04 2.90E-04 8.57E-04 U AP 03 469370003 12/19/2018 Ru-106 -9.34E-04 8.11E-04 2.10E-03 U AP 03 469370003 12/19/2018 Sb-124 -4.42E-04 4.98E-04 1.33E-03 U AP 03 469370003 12/19/2018 Sb-125 4.52E-05 2.27E-04 7.51E-04 U AP 03 469370003 12/19/2018 Se-75 4.89E-05 1.30E-04 4.46E-04 U AP 03 469370003 12/19/2018 Th-228 3.87E-04 3.22E-04 5.96E-04 U AP 03 469370003 12/19/2018 Zn-65 -3.72E-04 2.55E-04 5.95E-04 U AP 03 469370003 12/19/2018 Zr-95 -1.18E-04 3.52E-04 1.14E-03 U AP 03 468040003 1/2/2019 BETA 2.15E-02 1.02E-03 9.55E-04 AP 04 441050004 1/3/2018 BETA 1.87E-02 1.01E-03 6.80E-04 AP 04 441742004 1/16/2018 BETA 2.83E-02 1.31E-03 7.86E-04 AP 04 442981004 1/31/2018 BETA 2.31E-02 1.10E-03 6.41E-04 AP 04 443986004 2/14/2018 BETA 1.74E-02 8.67E-04 8.07E-04 AP 04 444963004 2/28/2018 BETA 2.67E-02 1.08E-03 7.68E-04 AP 04 446154004 3/12/2018 BETA 9.38E-03 8.18E-04 8.76E-04 M AP 04 447013004 3/28/2018 BETA 1.66E-02 8.51E-04 7.94E-04 AP 04 450999004 3/28/2018 Ac-228 4.74E-05 6.72E-04 2.14E-03 U AP 04 450999004 3/28/2018 Ag-108m 1.61E-04 8.02E-05 2.81E-04 U AP 04 450999004 3/28/2018 Ag-110m -1.81E-04 1.69E-04 4.48E-04 U AP 04 450999004 3/28/2018 Ba-140 1.62E-01 1.02E-01 3.64E-01 U AP 04 450999004 3/28/2018 Be-7 9.82E-02 1.01E-02 1.19E-02 AP 04 450999004 3/28/2018 Ce-141 -3.39E-04 1.08E-03 3.21E-03 U AP 04 450999004 3/28/2018 Ce-144 -2.00E-04 6.12E-04 1.88E-03 U AP 04 450999004 3/28/2018 Co-57 1.01E-06 7.95E-05 2.51E-04 U AP 04 450999004 3/28/2018 Co-58 -2.87E-04 2.47E-04 6.51E-04 U AP 04 450999004 3/28/2018 Co-60 -5.94E-05 1.17E-04 3.34E-04 U AP 04 450999004 3/28/2018 Cr-51 1.30E-03 1.03E-02 3.45E-02 U AP 04 450999004 3/28/2018 Cs-134 2.69E-04 1.10E-04 4.31E-04 U AP 04 450999004 3/28/2018 Cs-137 -7.66E-05 8.54E-05 2.50E-04 U AP 04 450999004 3/28/2018 Fe-59 9.92E-04 1.16E-03 4.14E-03 U AP 04 450999004 3/28/2018 I-131 0.00E+00 1.03E+00 0.00E+00 UI AP 04 450999004 3/28/2018 K-40 3.70E-03 2.40E-03 5.42E-03 U AP 04 450999004 3/28/2018 La-140 2.55E-02 3.75E-02 1.40E-01 U AP 04 450999004 3/28/2018 Mn-54 1.47E-05 1.22E-04 4.11E-04 U AP 04 450999004 3/28/2018 Nb-95 -1.09E-04 3.47E-04 9.73E-04 U AP 04 450999004 3/28/2018 Ru-103 -9.92E-04 6.65E-04 1.68E-03 U -160-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 04 450999004 3/28/2018 Ru-106 -1.03E-03 1.10E-03 2.97E-03 U AP 04 450999004 3/28/2018 Sb-124 3.96E-04 1.02E-03 3.60E-03 U AP 04 450999004 3/28/2018 Sb-125 5.73E-05 2.61E-04 8.66E-04 U AP 04 450999004 3/28/2018 Se-75 1.57E-04 2.03E-04 7.04E-04 U AP 04 450999004 3/28/2018 Th-228 0.00E+00 4.20E-04 7.13E-04 U AP 04 450999004 3/28/2018 Zn-65 0.00E+00 0.00E+00 1.20E-03 U AP 04 450999004 3/28/2018 Zr-95 8.41E-04 5.96E-04 2.17E-03 U AP 04 448060004 4/11/2018 BETA 2.19E-02 1.06E-03 9.48E-04 AP 04 449083004 4/27/2018 BETA 2.36E-02 1.10E-03 9.31E-04 AP 04 449980004 5/9/2018 BETA 2.28E-02 1.18E-03 1.10E-03 AP 04 451344004 5/23/2018 BETA 1.67E-02 9.21E-04 9.00E-04 AP 04 452120004 6/6/2018 BETA 1.89E-02 9.85E-04 8.82E-04 AP 04 453225004 6/20/2018 BETA 1.62E-02 9.01E-04 8.66E-04 AP 04 457762004 6/20/2018 Ac-228 8.09E-07 4.76E-04 1.38E-03 U AP 04 457762004 6/20/2018 Ag-108m -5.05E-05 5.88E-05 1.79E-04 U AP 04 457762004 6/20/2018 Ag-110m -1.04E-04 1.55E-04 4.43E-04 U AP 04 457762004 6/20/2018 Ba-140 1.38E-01 1.24E-01 4.35E-01 U AP 04 457762004 6/20/2018 Be-7 1.08E-01 1.01E-02 6.51E-03 AP 04 457762004 6/20/2018 Ce-141 -1.96E-03 1.18E-03 2.97E-03 U AP 04 457762004 6/20/2018 Ce-144 1.26E-03 6.77E-04 1.52E-03 U AP 04 457762004 6/20/2018 Co-57 -1.17E-05 5.95E-05 1.92E-04 U AP 04 457762004 6/20/2018 Co-58 -4.58E-04 2.63E-04 5.77E-04 U AP 04 457762004 6/20/2018 Co-60 -4.15E-05 1.03E-04 3.21E-04 U AP 04 457762004 6/20/2018 Cr-51 4.32E-03 9.84E-03 3.42E-02 U AP 04 45776 2004 6/20/2018 Cs-134 3.49E-04 1.82E-04 4.12E-04 U AP 04 457762004 6/20/2018 Cs-137 -2.35E-05 8.56E-05 2.71E-04 U AP 04 457762004 6/20/2018 Fe-59 1.93E-03 1.19E-03 4.27E-03 U AP 04 457762004 6/20/2018 I-131 0.00E+00 1.44E+00 0.00E+00 UI AP 04 457762004 6/20/2018 K-40 3.64E-03 2.12E-03 3.96E-03 U AP 04 457762004 6/20/2018 La-140 -6.93E-02 4.48E-02 7.67E-02 U AP 04 457762004 6/20/2018 Mn-54 2.78E-05 1.04E-04 3.08E-04 U AP 04 457762004 6/20/2018 Nb-95 -2.14E-04 2.46E-04 6.87E-04 U AP 04 457762004 6/20/2018 Ru-103 -2.76E-04 4.83E-04 1.51E-03 U AP 04 457762004 6/20/2018 Ru-106 -3.82E-04 8.28E-04 2.57E-03 U AP 04 457762004 6/20/2018 Sb-124 -1.48E-04 6.11E-04 1.87E-03 U AP 04 457762004 6/20/2018 Sb-125 1.35E-04 1.90E-04 6.65E-04 U AP 04 457762004 6/20/2018 Se-75 -5.00E-05 1.73E-04 5.27E-04 U AP 04 457762004 6/20/2018 Th-228 2.99E-04 2.65E-04 5.15E-04 U AP 04 457762004 6/20/2018 Zn-65 2.71E-04 2.85E-04 9.73E-04 U AP 04 457762004 6/20/2018 Zr-95 4.40E-04 3.94E-04 1.40E-03 U AP 04 454068004 7/3/2018 BETA 3.00E-02 1.28E-03 9.20E-04 AP 04 455084004 7/18/2018 BETA 2.26E-02 1.01E-03 8.50E-04 AP 04 456459004 8/1/2018 BETA 1.93E-02 9.71E-04 8.26E-04 AP 04 457694004 8/15/2018 BETA 3.64E-02 1.36E-03 8.70E-04 AP 04 458640004 8/29/2018 BETA 3.85E-02 1.50E-03 1.10E-03 AP 04 459429004 9/11/2018 BETA 2.63E-02 1.17E-03 9.23E-04 AP 04 460470004 9/26/2018 BETA 1.94E-02 1.05E-03 1.03E-03 -161-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 04 465128004 9/26/2018 Ac-228 1.07E-04 3.93E-04 1.26E-03 U AP 04 465128004 9/26/2018 Ag-108m 1.15E-05 6.34E-05 1.82E-04 U AP 04 465128004 9/26/2018 Ag-110m 1.23E-04 1.33E-04 4.51E-04 U AP 04 465128004 9/26/2018 Ba-140 1.43E-01 2.33E-01 4.09E-01 U AP 04 465128004 9/26/2018 Be-7 1.30E-01 9.60E-03 7.09E-03 AP 04 465128004 9/26/2018 Ce-141 1.20E-04 1.39E-0 3 3.14E-03 U AP 04 465128004 9/26/2018 Ce-144 8.08E-04 4.56E-04 1.43E-03 U AP 04 465128004 9/26/2018 Co-57 -1.07E-05 5.28E-05 1.66E-04 U AP 04 465128004 9/26/2018 Co-58 -1.24E-04 1.95E-04 5.78E-04 U AP 04 465128004 9/26/2018 Co-60 -5.09E-05 7.79E-05 2.36E-04 U AP 04 465128004 9/26/2018 Cr-51 -3.34E-03 8.47E-03 2.80E-02 U AP 04 465128004 9/26/2018 Cs-134 -8.50E-05 7.76E-05 2.11E-04 U AP 04 465128004 9/26/2018 Cs-137 -1.07E-05 8.03E-05 2.30E-04 U AP 04 465128004 9/26/2018 Fe-59 -5.10E-04 6.97E-04 2.13E-03 U AP 04 465128004 9/26/2018 I-131 0.00E+00 1.41E+00 0.00E+00 UI AP 04 465128004 9/26/2018 K-40 3.94E-03 1.54E-03 2.30E-03 AP 04 465128004 9/26/2018 La-140 2.52E-02 3.57E-02 1.30E-01 U AP 04 465128004 9/26/2018 Mn-54 -1.36E-05 8.90E-05 2.81E-04 U AP 04 465128004 9/26/2018 Nb-95 2.22E-04 2.50E-04 8.43E-04 U AP 04 465128004 9/26/2018 Ru-103 1.46E-04 3.85E-04 1.31E-03 U AP 04 465128004 9/26/2018 Ru-106 -7.86E-05 7.19E-04 2.07E-03 U AP 04 465128004 9/26/2018 Sb-124 1.68E-03 9.12E-04 2.69E-03 U AP 04 465128004 9/26/2018 Sb-125 -8.21E-05 1.76E-04 5.68E-04 U AP 04 465128004 9/26/2018 Se-75 -5.76E-05 1.41E-04 4.70E-04 U AP 04 465128004 9/26/2018 Th-228 0.00E+00 2.16E-04 3.37E-04 U AP 04 465128004 9/26/2018 Zn-65 2.07E-04 2.23E-04 7.31E-04 U AP 04 465128004 9/26/2018 Zr-95 -6.33E-05 3.80E-04 1.21E-03 U AP 04 461647004 10/10/2018 BETA 2.02E-02 1.01E-03 8.85E-04 AP 04 462687004 10/24/2018 BETA 2.24E-02 1.17E-03 1.12E-03 AP 04 463994004 11/7/2018 BETA 1.35E-02 8.31E-04 8.65E-04 AP 04 465452004 11/21/2018 BETA 1.82E-02 9.51E-04 8.64E-04 AP 04 466541004 12/5/2018 BETA 1.61E-02 9.06E-04 9.02E-04 AP 04 467531004 12/19/2018 BETA 3.06E-02 1.22E-03 8.97E-04 AP 04 469370004 12/19/2018 Ac-228 8.12E-04 5.17E-04 1.73E-03 U AP 04 469370004 12/19/2018 A g-108m 2.84E-05 9.54E-05 2.92E-04 U AP 04 469370004 12/19/2018 Ag-110m -2.76E-04 2.08E-04 5.17E-04 U AP 04 469370004 12/19/2018 Ba-140 -4.52E-02 2.62E-02 6.64E-02 U AP 04 469370004 12/19/2018 Be-7 7.74E-02 6.36E-03 4.79E-03 AP 04 469370004 12/19/2018 Ce-141 5.88E-04 5.93E-04 1.94E-03 U AP 04 469370004 12/19/2018 Ce-144 -2.92E-04 4.79E-04 1.58E-03 U AP 04 469370004 12/19/2018 Co-57 -1.56E-08 6.49E-05 2.23E-04 U AP 04 469370004 12/19/2018 Co-58 -1.26E-04 2.10E-04 6.66E-04 U AP 04 469370004 12/19/2018 Co-60 -2.33E-04 1.35E-04 2.83E-04 U AP 04 469370004 12/19/2018 Cr-51 -7.29E-05 4.97E-03 1.64E-02 U AP 04 469370004 12/19/2018 Cs-134 4.80E-05 1.30E-04 4.47E-04 U AP 04 469370004 12/19/2018 Cs-137 1.42E-04 1.18E-04 3.94E-04 U AP 04 469370004 12/19/2018 Fe-59 -6.50E-04 6.27E-04 1.76E-03 U AP 04 469370004 12/19/2018 I-131 1.17E-02 6.96E-02 2.31E-01 U AP 04 469370004 12/19/2018 K-40 0.00E+00 2.20E-03 2.70E-03 U -162-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 04 469370004 12/19/2018 La-140 1.89E-02 9.75E-03 3.54E-02 U AP 04 469370004 12/19/2018 Mn-54 1.95E-04 1.32E-04 4.64E-04 U AP 04 469370004 12/19/2018 Nb-95 -5.78E-05 2.20E-04 7.29E-04 U AP 04 469370004 12/19/2018 Ru-103 -4.10E-04 4.02E-04 1.01E-03 U AP 04 469370004 12/19/2018 Ru-106 7.45E-04 9.87E-04 3.29E-03 U AP 04 469370004 12/19/2018 Sb-124 2.57E-04 5.64E-04 1.93E-03 U AP 04 469370004 12/19/2018 Sb-125 1.63E-04 2.77E-04 9.25E-04 U AP 04 469370004 12/19/2018 Se-75 -2.40E-04 1.76E-04 5.18E-04 U AP 04 469370004 12/19/2018 Th-228 2.69E-04 3.20E-04 6.54E-04 U AP 04 469370004 12/19/2018 Zn-65 0.00E+00 3.44E-04 8.74E-04 U AP 04 469370004 12/19/2018 Zr-95 -1.07E-04 3.89E-04 1.29E-03 U AP 04 468040004 1/2/2019 BETA 1.97E-02 1.01E-03 9.34E-04 AP 05 441050005 1/3/2018 BETA 2.09E-02 1.07E-03 6.83E-04 AP 05 441742005 1/16/2018 BETA 2.71E-02 1.28E-03 7.84E-04 AP 05 442981005 1/31/2018 BETA 2.84E-02 1.23E-03 6.45E-04 AP 05 443986005 2/14/2018 BETA 2.12E-02 9.74E-04 8.50E-04 AP 05 444963005 2/28/2018 BETA 2.86E-02 1.15E-03 9.83E-04 AP 05 446154005 3/12/2018 BETA 1.09E-02 9.12E-04 9.43E-04 AP 05 447013005 3/28/2018 BETA 2.18E-02 1.12E-03 1.06E-03 AP 05 450999005 3/28/2018 Ac-228 1.27E-04 4.94E-04 1.62E-03 U AP 05 450999005 3/28/2018 Ag-108m -1.01E-04 8.33E-05 2.32E-04 U AP 05 450999005 3/28/2018 Ag-110m 4.01E-04 2.02E-04 7.54E-04 U AP 05 450999005 3/28/2018 Ba-140 9.50E-02 1.10E-01 3.86E-01 U AP 05 450999005 3/28/2018 Be-7 9.62E-02 1.03E-02 1.10E-02 AP 05 450999005 3/28/2018 Ce-141 2.11E-04 1.05E-03 3.39E-03 U AP 05 450999005 3/28/2018 Ce-144 -3.15E-04 5.88E-04 1.80E-03 U AP 05 450999005 3/28/2018 Co-57 -4.50E-05 7.20E-05 2.18E-04 U AP 05 450999005 3/28/2018 Co-58 3.65E-04 2.36E-04 8.56E-04 U AP 05 450999005 3/28/2018 Co-60 5.16E-05 1.29E-04 4.49E-04 U AP 05 450999005 3/28/2018 Cr-51 1.54E-03 9.49E-03 3.25E-02 U AP 05 450999005 3/28/2018 Cs-134 6.56E-05 1.36E-04 4.57E-04 U AP 05 450999005 3/28/2018 Cs-137 -4.16E-06 1.00E-04 3.21E-04 U AP 05 450999005 3/28/2018 Fe-59 1.29E-03 1.02E-03 3.84E-03 U AP 05 450999005 3/28/2018 I-131 0.00E+00 9.24E-01 0.00E+00 UI AP 05 450999005 3/28/2018 K-40 3.78E-03 2.33E-03 8.38E-03 U AP 05 450999005 3/28/2018 La-140 -5.30E-02 3.30E-02 0.00E+00 U AP 05 450999005 3/28/2018 Mn-54 -5.09E-05 1.28E-04 3.79E-04 U AP 05 450999005 3/28/2018 Nb-95 -5.48E-04 4.55E-04 1.08 E-03 U AP 05 450999005 3/28/2018 Ru-103 2.15E-04 5.28E-04 1.80E-03 U AP 05 450999005 3/28/2018 Ru-106 1.41E-03 1.18E-03 4.12E-03 U AP 05 450999005 3/28/2018 Sb-124 -9.97E-04 1.06E-03 2.66E-03 U AP 05 450999005 3/28/2018 Sb-125 1.05E-04 2.81E-04 9.58E-04 U AP 05 450999005 3/28/2018 Se-75 5.45E-05 1.87E-04 6.49E-04 U AP 05 450999005 3/28/2018 Th-228 3.30E-04 3.01E-04 5.35E-04 U AP 05 450999005 3/28/2018 Zn-65 2.09E-04 3.85E-04 1.22E-03 U AP 05 450999005 3/28/2018 Zr-95 -2.67E-04 7.21E-04 2.20E-03 U AP 05 448060005 4/11/2018 BETA 2.26E-02 1.06E-03 1.11E-03 -163-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 05 449083005 4/27/2018 BETA 2.01E-02 9.35E-04 7.69E-04 AP 05 449980005 5/9/2018 BETA 2.17E-02 1.13E-03 1.10E-03 AP 05 451344005 5/23/2018 BETA 1.51E-02 8.65E-04 8.62E-04 AP 05 452120005 6/6/2018 BETA 1.52E-02 8.76E-04 8.63E-04 AP 05 453225005 6/20/2018 BETA 2.05E-02 9.96E-04 8.33E-04 AP 05 457762005 6/20/2018 Ac-228 2.57E-04 3.98E-04 1.36E-03 U AP 05 457762005 6/20/2018 Ag-108m 3.74E-05 6.70E-05 2.25E-04 U AP 05 457762005 6/20/2018 Ag-110m 4.49E-05 1.79E-04 5.41E-04 U AP 05 457762005 6/20/2018 Ba-140 -1.12E-01 1.58E-01 4.76E-01 U AP 05 457762005 6/20/2018 Be-7 1.15E-01 9.79E-03 7.35E-03 AP 05 457762005 6/20/2018 Ce-141 -4.17E-04 8.39E-04 2.57E-03 U AP 05 457762005 6/20/2018 Ce-144 7.46E-05 3.73E-04 1.19E-03 U AP 05 457762005 6/20/2018 Co-57 6.52E-05 4.86E-05 1.57E-04 U AP 05 457762005 6/20/2018 Co-58 -2.09E-04 2.69E-04 7.04E-04 U AP 05 457762005 6/20/2018 Co-60 -1.70E-05 7.75E-05 2.40E-04 U AP 05 457762005 6/20/2018 Cr-51 -1.01E-02 9.32E-03 2.84E-02 U AP 05 457762005 6/20/2018 Cs-134 1.13E-04 9.26E-05 3.31E-04 U AP 05 457762005 6/20/2018 Cs-137 -3.17E-05 9.70E-05 2.99E-04 U AP 05 457762005 6/20/2018 Fe-59 2.93E-04 1.13E-03 3.79E-03 U AP 05 457762005 6/20/2018 I-131 0.00E+00 1.15E+00 0.00E+00 UI AP 05 457762005 6/20/2018 K-40 1.72E-03 1.52E-03 2.72E-03 U AP 05 457762005 6/20/2018 La-140 6.30E-03 5.89E-02 2.00E-01 U AP 05 457762005 6/20/2018 Mn-54 8.00E-05 1.01E-04 3.54E-04 U AP 05 457762005 6/20/2018 Nb-95 -4.32E-05 2.79E-04 9.29E-04 U AP 05 457762005 6/20/2018 Ru-103 1.81E-04 5.49E-04 1.81E-03 U AP 05 457762005 6/20/2018 Ru-106 -3.16E-04 9.00E-04 2.78E-03 U AP 05 457762005 6/20/2018 Sb-124 -1.99E-04 3.75E-04 1.04E-03 U AP 05 457762005 6/20/2018 Sb-125 -4.74E-05 1.77E-04 5.66E-04 U AP 05 457762005 6/20/2018 Se-75 -1.24E-05 1.31E-04 4.41E-04 U AP 05 457762005 6/20/2018 Th-228 2.31E-04 2.39E-04 3.19E-04 U AP 05 457762005 6/20/2018 Zn-65 -3.98E-04 2.90E-04 7.62E-04 U AP 05 457762005 6/20/2018 Zr-95 3.40E-04 4.93E-04 1.57E-03 U AP 05 454068005 7/3/2018 BETA 2.75E-02 1.21E-03 9.33E-04 AP 05 455084005 7/18/2018 BETA 2.98E-02 1.30E-03 1.02E-03 AP 05 456459005 8/1/2018 BETA 1.78E-02 9.45E-04 8.89E-04 AP 05 457694005 8/15/2018 BETA 3.25E-02 1.27E-03 8.81E-04 AP 05 458640005 8/29/2018 BETA 3.60E-02 1.37E-03 8.95E-04 AP 05 459429005 9/12/2018 BETA 2.33E-02 1.07E-03 8.92E-04 AP 05 460470005 9/26/2018 BETA 1.87E-02 9.96E-04 9.14E-04 AP 05 465128005 9/26/2018 Ac-228 9.62E-04 4.60E-04 1.55E-03 U AP 05 465128005 9/26/2018 Ag-108m 2.00E-05 6.28E-05 2.10E-04 U AP 05 465128005 9/26/2018 Ag-110m 5.67E-05 1.58E-04 4.85E-04 U AP 05 465128005 9/26/2018 Ba-140 1.44E-02 1.79E-01 5.37E-01 U AP 05 465128005 9/26/2018 Be-7 1.25E-01 1.06E-02 8.83E-03 AP 05 465128005 9/26/2018 Ce-141 -8.93E-04 8.68E-04 2.52E-03 U AP 05 465128005 9/26/2018 Ce-144 -1.01E-04 3.82E-04 1.20E-03 U AP 05 465128005 9/26/2018 Co-57 -8.90E-06 5.41E-05 1.51E-04 U AP 05 465128005 9/26/2018 Co-58 3.00E-04 2.44E-04 8.69E-04 U -164-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 05 465128005 9/26/2018 Co-60 -9.34E-05 1.08E-04 3.02E-04 U AP 05 465128005 9/26/2018 Cr-51 6.13E-05 8.95E-03 3.00E-02 U AP 05 465128005 9/26/2018 Cs-134 0.00E+00 1.70E-04 3.89E-04 U AP 05 465128005 9/26/2018 Cs-137 1.08E-04 9.87E-05 3.04E-04 U AP 05 465128005 9/26/2018 Fe-59 1.78E-03 1.33E-03 3.40E-03 U AP 05 465128005 9/26/2018 I-131 0.00E+00 1.29E+00 0.00E+00 UI AP 05 465128005 9/26/2018 K-40 2.69E-03 1.88E-03 3.54E-03 U AP 05 465128005 9/26/2018 La-140 2.09E-02 4.63E-02 1.66E-01 U AP 05 465128005 9/26/2018 Mn-54 1.08E-04 1.13E-04 3.98E-04 U AP 05 465128005 9/26/2018 Nb-95 -6.07E-05 2.76E-04 9.15E-04 U AP 05 465128005 9/26/2018 Ru-103 4.86E-04 4.40E-04 1.51E-03 U AP 05 465128005 9/26/2018 Ru-106 -1.11E-03 9.26E-04 2.51E-03 U AP 05 465128005 9/26/2018 Sb-124 -1.29E-03 6.88E-04 1.08E-03 U AP 05 465128005 9/26/2018 Sb-125 1.18E-04 2.11E-04 7.11E-04 U AP 05 465128005 9/26/2018 Se-75 -2.61E-04 1.65E-04 4.76E-04 U AP 05 465128005 9/26/2018 Th-228 2.53E-04 2.28E-04 3.38E-04 U AP 05 465128005 9/26/2018 Zn-65 -4.93E-05 2.64E-04 8.49E-04 U AP 05 465128005 9/26/2018 Zr-95 -2.91E-04 5.24E-04 1.68E-03 U AP 05 461647005 10/10/2018 BETA 2.15E-02 1.04E-03 9.02E-04 AP 05 462687005 10/24/2018 BETA 1.83E-02 1.00E-03 9.75E-04 AP 05 463994005 11/7/2018 BETA 1.73E-02 9.75E-04 9.68E-04 AP 05 465452005 11/21/2018 BETA 1.95E-02 1.04E-03 1.08E-03 AP 05 466541005 12/5/2018 BETA 1.55E-02 9.02E-04 9.06E-04 AP 05 467531005 12/19/2018 BETA 2.95E-02 1.25E-03 1.03E-03 AP 05 469370005 12/19/2018 Ac-228 -3.35E-04 5.64E-04 1.65E-03 U AP 05 469370005 12/19/2018 Ag-108m -1.08E-05 7.26E-05 2.39E-04 U AP 05 469370005 12/19/2018 Ag-110m 2.85E-04 1.76E-04 6.09E-04 U AP 05 469370005 12/19/2018 Ba-140 2.51E-03 2.33E-02 7.70E-02 U AP 05 469370005 12/19/2018 Be-7 8.05E-02 6.87E-03 5.38E-03 AP 05 469370005 12/19/2018 Ce-141 -5.21E-04 5.28E-04 1.49E-03 U AP 05 469370005 12/19/2018 Ce-144 8.77E-05 4.54E-04 1.52E-03 U AP 05 469370005 12/19/2018 Co-57 -2.00E-05 5.87E-05 1.77E-04 U AP 05 469370005 12/19/2018 Co-58 1.31E-04 2.25E-04 7.93E-04 U AP 05 469370005 12/19/2018 Co-60 7.05E-05 1.30E-04 4.49E-04 U AP 05 469370005 12/19/2018 Cr-51 3.41E-04 4.24E-03 1.46E-02 U AP 05 469370005 12/19/2018 Cs-134 1.44E-04 1.19E-04 4.30E-04 U AP 05 469370005 12/19/2018 Cs-137 -1.07E-04 1.11E-04 3.12E-04 U AP 05 469370005 12/19/2018 Fe-59 -1.34E-03 7.39E-04 1.54E-03 U AP 05 469370005 12/19/2018 I-131 -5.34E-02 7.15E-02 2.11E-01 U AP 05 469370005 12/19/2018 K-40 3.18E-03 1.91E-03 7.02E-03 U AP 05 469370005 12/19/2018 La-140 -7.43E-03 7.19E-03 1.81E-02 U AP 05 469370005 12/19/2018 Mn-54 2.37E-04 1.28E-04 4.60E-04 U AP 05 469370005 12/19/2018 Nb-95 -2.90E-04 2.90E-04 7.81E-04 U AP 05 469370005 12/19/2018 Ru-103 -3.19E-04 3.33E-04 9.82E-04 U AP 05 469370005 12/19/2018 Ru-106 6.16E-04 8.79E-04 3.01E-03 U AP 05 469370005 12/19/2018 Sb-124 2.50E-04 6.89E-04 2.41E-03 U AP 05 469370005 12/19/2018 Sb-125 1.91E-04 2.40E-04 8.34E-04 U AP 05 469370005 12/19/2018 Se-75 3.38E-04 1.59E-04 5.13E-04 U AP 05 469370005 12/19/2018 Th-228 3.50E-04 2.36E-04 5.42E-04 U -165-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 05 469370005 12/19/2018 Zn-65 -3.00E-04 3.25E-04 9.22E-04 U AP 05 469370005 12/19/2018 Zr-95 2.24E-04 4.23E-04 1.41E-03 U AP 05 468040005 1/2/2019 BETA 2.18E-02 1.10E-03 1.04E-03 AP 07 441050006 1/3/2018 BETA 1.30E-02 8.25E-04 6.44E-04 AP 07 441742006 1/16/2018 BETA 2.75E-02 1.26E-03 7.48E-04 AP 07 442981006 1/31/2018 BETA 2.51E-02 1.13E-03 6.14E-04 AP 07 443986006 2/14/2018 BETA 2.37E-02 9.74E-04 7.05E-04 AP 07 444963006 2/28/2018 BETA 2.66E-02 1.05E-03 8.03E-04 AP 07 446154006 3/12/2018 BETA 8.78E-03 7.80E-04 8.48E-04 M AP 07 447013006 3/28/2018 BETA 1.72E-02 8.78E-04 7.87E-04 AP 07 450999006 3/28/2018 Ac-228 -9.36E-05 4.29E-04 1.43E-03 U AP 07 450999006 3/28/2018 Ag-108m 3.34E-05 7.37E-05 2.32E-04 U AP 07 450999006 3/28/2018 Ag-110m -2.91E-04 1.60E-04 3.38E-04 U AP 07 450999006 3/28/2018 Ba-140 6.62E-02 8.04E-02 2.83E-01 U AP 07 450999006 3/28/2018 Be-7 1.09E-01 9.00E-03 7.14E-03 AP 07 450999006 3/28/2018 Ce-141 -1.19E-03 8.65E-04 2.39E-03 U AP 07 450999006 3/28/2018 Ce-144 4.74E-04 4.10E-04 1.37E-03 U AP 07 450999006 3/28/2018 Co-57 1.46E-05 5.68E-05 1.85E-04 U AP 07 450999006 3/28/2018 Co-58 9.18E-05 1.91E-04 6.57E-04 U AP 07 450999006 3/28/2018 Co-60 -8.88E-05 1.10E-04 2.96E-04 U AP 07 450999006 3/28/2018 Cr-51 6.87E-03 8.07E-03 2.84E-02 U AP 07 450999006 3/28/2018 Cs-134 -8.68E-05 9.58E-05 2.73E-04 U AP 07 450999006 3/28/2018 Cs-137 7.19E-05 7.55E-05 2.67E-04 U AP 07 450999006 3/28/2018 Fe-59 -4.61E-04 1.03E-03 3.10E-03 U AP 07 450999006 3/28/2018 I-131 0.00E+00 7.23E-01 0.00E+00 UI AP 07 450999006 3/28/2018 K-40 0.00E+00 1.93E-03 2.74E-03 U AP 07 450999006 3/28/2018 La-140 -2.43E-02 3.57E-02 1.06E-01 U AP 07 450999006 3/28/2018 Mn-54 0.00E+00 1.24E-04 2.47E-04 U AP 07 450999006 3/28/2018 Nb-95 -4.81E-05 2.47E-04 7.95E-04 U AP 07 450999006 3/28/2018 Ru-103 -4.49E-04 4.24E-04 1.25E-03 U AP 07 450999006 3/28/2018 Ru-106 2.12E-04 7.84E-04 2.67E-03 U AP 07 450999006 3/28/2018 Sb-124 -6.45E-04 5.22E-04 1.10E-03 U AP 07 450999006 3/28/2018 Sb-125 -1.63E-04 2.17E-04 6.87E-04 U AP 07 450999006 3/28/2018 Se-75 -1.09E-04 1.93E-04 5.22E-04 U AP 07 450999006 3/28/2018 Th-228 0.00E+00 2.60E-04 5.54E-04 U AP 07 450999006 3/28/2018 Zn-65 -7.76E-05 2.2 0E-04 6.63E-04 U AP 07 450999006 3/28/2018 Zr-95 -7.38E-05 4.51E-04 1.29E-03 U AP 07 448060006 4/11/2018 BETA 1.99E-02 9.60E-04 8.57E-04 AP 07 449083006 4/27/2018 BETA 2.07E-02 9.12E-04 7.13E-04 AP 07 449980006 5/9/2018 BETA 2.33E-02 1.12E-03 9.44E-04 AP 07 451344006 5/23/2018 BETA 1.63E-02 8.70E-04 8.13E-04 AP 07 452120006 6/6/2018 BETA 1.49E-02 8.43E-04 8.15E-04 AP 07 453225006 6/20/2018 BETA 2.07E-02 1.10E-03 1.03E-03 AP 07 457762006 6/20/2018 Ac-228 -5.81E-04 6.48E-04 1.88E-03 U AP 07 457762006 6/20/2018 Ag-108m 2.74E-06 9.42E-05 3.09E-04 U AP 07 457762006 6/20/2018 Ag-110m -1.52E-04 2.85E-04 8.88E-04 U -166-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 07 457762006 6/20/2018 Ba-140 1.95E-01 2.04E-01 7.14E-01 U AP 07 457762006 6/20/2018 Be-7 1.22E-01 1.39E-02 1.01E-02 AP 07 457762006 6/20/2018 Ce-141 -2.57E-03 1.63E-03 4.12E-03 U AP 07 457762006 6/20/2018 Ce-144 -3.04E-04 6.95E-04 2.11E-03 U AP 07 457762006 6/20/2018 Co-57 1.49E-04 7.79E-05 2.55E-04 U AP 07 457762006 6/20/2018 Co-58 -2.58E-04 3.43E-04 1.01E-03 U AP 07 457762006 6/20/2018 Co-60 5.03E-05 1.30E-04 4.58E-04 U AP 07 457762006 6/20/2018 Cr-51 -7.83E-03 1.19E-02 3.68E-02 U AP 07 457762006 6/20/2018 Cs-134 -2.76E-04 1.49E-04 2.96E-04 U AP 07 457762006 6/20/2018 Cs-137 1.75E-04 1.28E-04 4.60E-04 U AP 07 457762006 6/20/2018 Fe-59 -1.41E-03 1.46E-03 3.83E-03 U AP 07 457762006 6/20/2018 I-131 0.00E+00 2.42E+00 0.00E+00 UI AP 07 457762006 6/20/2018 K-40 0.00E+00 2.35E-03 2.70E-03 U AP 07 457762006 6/20/2018 La-140 8.25E-02 5.67E-02 2.48E-01 U AP 07 457762006 6/20/2018 Mn-54 5.11E-05 1.24E-04 4.43E-04 U AP 07 457762006 6/20/2018 Nb-95 5.82E-04 4.41E-04 1.63E-03 U AP 07 457762006 6/20/2018 Ru-103 -9.83E-04 7.26E-04 1.79E-03 U AP 07 457762006 6/20/2018 Ru-106 -9.53E-04 1.33E-03 3.76E-03 U AP 07 4577 62006 6/20/2018 Sb-124 6.19E-04 1.15E-03 4.26E-03 U AP 07 457762006 6/20/2018 Sb-125 -4.96E-06 3.61E-04 1.18E-03 U AP 07 457762006 6/20/2018 Se-75 -1.21E-05 1.96E-04 6.56E-04 U AP 07 457762006 6/20/2018 Th-228 3.89E-04 2.74E-04 6.45E-04 U AP 07 457762006 6/20/2018 Zn-65 1.66E-04 3.90E-04 1.24E-03 U AP 07 457762006 6/20/2018 Zr-95 -9.43E-04 6.99E-04 1.79E-03 U AP 07 454068006 7/3/2018 BETA 2.50E-02 1.12E-03 9.19E-04 AP 07 455084006 7/18/2018 BETA 2.72E-02 1.12E-03 7.95E-04 AP 07 456459006 8/1/2018 BETA 2.13E-02 1.11E-03 1.02E-03 AP 07 457694006 8/15/2018 BETA 3.18E-02 1.21E-03 8.73E-04 AP 07 458640006 8/29/2018 BETA 3.11E-02 1.22E-03 8.44E-04 AP 07 459429006 9/12/2018 BETA 3.06E-02 1.33E-03 1.08E-03 AP 07 460470006 9/26/2018 BETA 1.81E-02 9.34E-04 8.60E-04 AP 07 465128006 9/26/2018 Ac-228 4.25E-04 6.60E-04 2.42E-03 U AP 07 465128006 9/26/2018 Ag-108m -2.38E-05 1.25E-04 4.12E-04 U AP 07 465128006 9/26/2018 Ag-110m -2.16E-06 2.33E-04 7.80E-04 U AP 07 465128006 9/26/2018 Ba-140 -1.14E-01 2.49E-01 7.56E-01 U AP 07 465128006 9/26/2018 Be-7 1.20E-01 1.38E-02 1.57E-02 AP 07 465128006 9/26/2018 Ce-141 -2.06E-04 1.54E-03 5.23E-03 U AP 07 465128006 9/26/2018 Ce-144 -1.58E-04 7.65E-04 2.59E-03 U AP 07 465128006 9/26/2018 Co-57 -6.15E-05 9.87E-05 3.25E-04 U AP 07 465128006 9/26/2018 Co-58 -3.06E-04 4.51E-04 1.33E-03 U AP 07 465128006 9/26/2018 Co-60 5.00E-05 1.26E-04 4.43E-04 U AP 07 465128006 9/26/2018 Cr-51 -4.01E-03 1.89E-02 6.16E-02 U AP 07 465128006 9/26/2018 Cs-134 2.93 E-04 2.18E-04 7.79E-04 U AP 07 465128006 9/26/2018 Cs-137 1.26E-04 1.27E-04 4.45E-04 U AP 07 465128006 9/26/2018 Fe-59 1.98E-05 1.32E-03 4.37E-03 U AP 07 465128006 9/26/2018 I-131 0.00E+00 3.36E+00 0.00E+00 UI AP 07 465128006 9/26/2018 K-40 1.74E-03 2.30E-03 8.95E-03 U AP 07 465128006 9/26/2018 La-140 -1.20E-01 8.94E-02 1.64E-01 U AP 07 465128006 9/26/2018 Mn-54 -4.69E-05 1.80E-04 5.88E-04 U -167-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 07 465128006 9/26/2018 Nb-95 1.07E-04 4.86E-04 1.67E-03 U AP 07 465128006 9/26/2018 Ru-103 -1.50E-03 9.96E-04 2.50E-03 U AP 07 465128006 9/26/2018 Ru-106 -2.56E-03 1.50E-03 3.19E-03 U AP 07 465128006 9/26/2018 Sb-124 -6.08E-05 7.61E-04 2.36E-03 U AP 07 465128006 9/26/2018 Sb-125 -2.53E-04 3.57E-04 1.07E-03 U AP 07 465128006 9/26/2018 Se-75 3.21E-04 2.97E-04 1.02E-03 U AP 07 465128006 9/26/2018 Th-228 4.97E-04 3.17E-04 8.75E-04 U AP 07 465128006 9/26/2018 Zn-65 -1.60E-06 4.18E-04 1.38E-03 U AP 07 465128006 9/26/2018 Zr-95 -3.07E-04 7.05E-04 2.24E-03 U AP 07 461647006 10/10/2018 BETA 1.93E-02 9.49E-04 8.55E-04 AP 07 462687006 10/24/2018 BETA 1.77E-02 9.21E-04 8.76E-04 AP 07 463994006 11/7/2018 BETA 1.64E-02 9.34E-04 9.08E-04 AP 07 465452006 11/21/2018 BETA 2.04E-02 1.04E-03 1.02E-03 AP 07 466541006 12/5/2018 BETA 1.32E-02 8.31E-04 1.01E-03 AP 07 467531006 12/19/2018 BETA 3.40E-02 1.32E-03 9.97E-04 AP 07 469370006 12/19/2018 Ac-228 8.79E-04 7.22E-04 8.85E-04 U AP 07 469370006 12/19/2018 Ag-108m -1.04E-04 6.64E-05 1.81E-04 U AP 07 469370006 12/19/2018 Ag-110m 8.11E-06 1.55E-04 4.97E-04 U AP 07 469370006 12/19/2018 Ba-140 2.00E-02 1.83E-02 6.34E-02 U AP 07 469370006 12/19/2018 Be-7 6.92E-02 5.73E-03 4.12E-03 AP 07 469370006 12/19/2018 Ce-141 -7.50E-04 4.36E-04 1.14E-03 U AP 07 469370006 12/19/2018 Ce-144 -1.69E-04 4.35E-04 1.38E-03 U AP 07 469370006 12/19/2018 Co-57 4.95E-05 4.89E-05 1.64E-04 U AP 07 469370006 12/19/2018 Co-58 2.21E-04 1.73E-04 6.03E-04 U AP 07 469370006 12/19/2018 Co-60 4.86E-05 1.09E-04 3.77E-04 U AP 07 469370006 12/19/2018 Cr-51 -6.27E-03 3.67E-03 1.02E-02 U AP 07 469370006 12/19/2018 Cs-134 -3.86E-05 9.21E-05 2.80E-04 U AP 07 469370006 12/19/2018 Cs-137 8.15E-05 9.01E-05 3.09E-04 U AP 07 469370006 12/19/2018 Fe-59 -6.93E-04 5.37E-04 1.44E-03 U AP 07 469370006 12/19/2018 I-131 3.89E-02 4.98E-02 1.74E-01 U AP 07 469370006 12/19/2018 K-40 2.24E-03 1.74E-03 3.04E-03 U AP 07 469370006 12/19/2018 La-140 -7.79E-03 7.54E-03 1.99E-02 U AP 07 469370006 12/19/2018 Mn-54 7.16E-05 8.92E-05 2.83E-04 U AP 07 469370006 12/19/2018 Nb-95 1.56E-04 1.72E-04 5.91E-04 U AP 07 469370006 12/19/2018 Ru-103 -2.42E-04 2.46E-04 7.26E-04 U AP 07 469370006 12/19/2018 Ru-106 -2.74E-04 6.61E-04 2.05E-03 U AP 07 469370006 12/19/2018 Sb-124 1.90E-04 4.34E-04 1.51E-03 U AP 07 469370006 12/19/2018 Sb-125 -7.02E-05 2.25E-04 7.38E-04 U AP 07 469370006 12/19/2018 Se-75 -1.30E-04 1.56E-04 4.50E-04 U AP 07 469370006 12/19/2018 Th-228 2.52E-04 2.01E-04 4.73E-04 U AP 07 469370006 12/19/2018 Zn-65 4.52E-05 2.46E-04 8.41E-04 U AP 07 469370006 12/19/2018 Zr-95 4.96E-05 3.34E-04 1.09E-03 U AP 07 468040006 1/2/2019 BETA 2.48E-02 1.14E-03 1.01E-03 AP 08 441050007 1/3/2018 BETA 2.14E-02 1.09E-03 6.81E-04 AP 08 441742007 1/16/2018 BETA 2.68E-02 1.28E-03 7.90E-04 AP 08 442981007 1/31/2018 BETA 2.52E-02 1.16E-03 6.51E-04 AP 08 443986007 2/14/2018 BETA 2.23E-02 1.00E-03 9.47E-04 -168-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 08 444963007 2/28/2018 BETA 2.73E-02 1.12E-03 8.89E-04 AP 08 446154007 3/12/2018 BETA 9.16E-03 8.23E-04 9.04E-04 M AP 08 447013007 3/28/2018 BETA 1.62E-02 8.76E-04 9.94E-04 AP 08 450999007 3/28/2018 Ac-228 9.29E-05 4.59E-04 1.55E-03 U AP 08 450999007 3/28/2018 Ag-108m 3.51E-05 6.06E-05 2.12E-04 U AP 08 450999007 3/28/2018 Ag-110m -1.73E-04 1.57E-04 4.13E-04 U AP 08 450999007 3/28/2018 Ba-140 -1.89E-03 7.70E-02 2.56E-01 U AP 08 450999007 3/28/2018 Be-7 9.84E-02 9.37E-03 6.65E-03 AP 08 450999007 3/28/2018 Ce-141 1.34E-04 7.61E-04 2.47E-03 U AP 08 450999007 3/28/2018 Ce-144 -8.19E-04 4.64E-04 1.18E-03 U AP 08 450999007 3/28/2018 Co-57 -4.60E-07 5.50E-05 1.78E-04 U AP 08 450999007 3/28/2018 Co-58 -1.69E-04 1.64E-04 4.13E-04 U AP 08 450999007 3/28/2018 Co-60 1.62E-04 9.84E-05 3.81E-04 U AP 08 450999007 3/28/2018 Cr-51 1.70E-02 8.87E-03 3.04E-02 U AP 08 450999007 3/28/2018 Cs-134 -4.60E-05 9.46E-05 2.87E-04 U AP 08 450999007 3/28/2018 Cs-137 -9.01E-07 5.94E-05 1.95E-04 U AP 08 450999007 3/28/2018 Fe-59 4.56E-04 8.72E-04 2.97E-03 U AP 08 450999007 3/28/2018 I-131 0.00E+00 6.04E-01 0.00E+00 UI AP 08 450999007 3/28/2018 K-40 0.00E+00 1.83E-03 3.02E-03 U AP 08 450999007 3/28/2018 La-140 -7.11E-02 3.64E-02 5.01E-02 U AP 08 450999007 3/28/2018 Mn-54 -3.74E-05 1.06E-04 3.27E-04 U AP 08 450999007 3/28/2018 Nb-95 -9.50E-05 2.50E-04 7.78E-04 U AP 08 450999007 3/28/2018 Ru-103 -6.11E-04 4.26E-04 1.14E-03 U AP 08 450999007 3/28/2018 Ru-106 -4.72E-05 8.43E-04 2.77E-03 U AP 08 450999007 3/28/2018 Sb-124 3.16E-04 6.82E-04 2.44E-03 U AP 08 450999007 3/28/2018 Sb-125 1.82E-04 1.93E-04 6.87E-04 U AP 08 450999007 3/28/2018 Se-75 2.01E-04 1.60E-04 5.25E-04 U AP 08 450999007 3/28/2018 Th-228 4.37 E-04 2.43E-04 5.18E-04 U AP 08 450999007 3/28/2018 Zn-65 3.05E-04 2.18E-04 8.14E-04 U AP 08 450999007 3/28/2018 Zr-95 -3.61E-04 4.60E-04 1.34E-03 U AP 08 448060007 4/11/2018 BETA 2.26E-02 1.18E-03 1.15E-03 AP 08 449083007 4/27/2018 BETA 1.97E-02 9.15E-04 7.80E-04 AP 08 449980007 5/9/2018 BETA 2.97E-02 1.47E-03 1.35E-03 AP 08 451344007 5/23/2018 BETA 2.14E-02 1.15E-03 1.11E-03 AP 08 452120007 6/6/2018 BETA 1.84E-02 1.09E-03 1.14E-03 AP 08 453225007 6/8/2018 BETA 2.13E-02 2.91E-03 5.22E-03 AP 08 457762007 6/20/2018 Ac-228 1.21E-03 9.38E-04 3.05E-03 U AP 08 457762007 6/20/2018 Ag-108m -1.58E-04 1.33E-04 3.92E-04 U AP 08 457762007 6/20/2018 Ag-110m -4.82E-04 4.53E-04 1.24E-03 U AP 08 457762007 6/20/2018 Ba-140 -3.14E-01 4.22E-01 1.30E+00 U AP 08 457762007 6/20/2018 Be-7 1.12E-01 1.62E-02 1.94E-02 AP 08 457762007 6/20/2018 Ce-141 -3.63E-03 2.47E-03 6.66E-03 U AP 08 457762007 6/20/2018 Ce-144 6.83E-04 7.97E-04 2.70E-03 U AP 08 457762007 6/20/2018 Co-57 7.66E-05 9.14E-05 3.12E-04 U AP 08 457762007 6/20/2018 Co-58 3.85E-04 4.91E-04 1.71E-03 U AP 08 457762007 6/20/2018 Co-60 -2.90E-04 2.39E-04 6.24E-04 U AP 08 457762007 6/20/2018 Cr-51 -1.13E-02 2.63E-02 7.92E-02 U AP 08 457762007 6/20/2018 Cs-134 -2.73E-04 2.69E-04 7.55E-04 U -169-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 08 457762007 6/20/2018 Cs-137 -1.14E-04 1.77E-04 5.33E-04 U AP 08 457762007 6/20/2018 Fe-59 -4.72E-03 2.49E-03 5.38E-03 U AP 08 457762007 6/20/2018 I-131 -2.33E+00 4.95E+00 0.00E+00 U AP 08 457762007 6/20/2018 K-40 6.01E-04 2.94E-03 1.06E-02 U AP 08 457762007 6/20/2018 La-140 8.93E-02 1.79E-01 6.21E-01 U AP 08 457762007 6/20/2018 Mn-54 3.86E-04 2.77E-04 9.31E-04 U AP 08 457762007 6/20/2018 Nb-95 4.21E-04 6.39E-04 2.18E-03 U AP 08 457762007 6/20/2018 Ru-103 -1.15E-04 1.30E-03 4.32E-03 U AP 08 45776 2007 6/20/2018 Ru-106 -1.01E-03 1.94E-03 6.04E-03 U AP 08 457762007 6/20/2018 Sb-124 -3.90E-03 2.02E-03 2.81E-03 U AP 08 457762007 6/20/2018 Sb-125 4.66E-05 4.85E-04 1.65E-03 U AP 08 457762007 6/20/2018 Se-75 2.51E-04 3.70E-04 1.21E-03 U AP 08 457762007 6/20/2018 Th-228 2.42E-04 4.92E-04 7.81E-04 U AP 08 457762007 6/20/2018 Zn-65 -1.09E-03 7.19E-04 1.43E-03 U AP 08 457762007 6/20/2018 Zr-95 -7.79E-04 1.29E-03 3.90E-03 U AP 08 454068007 7/3/2018 BETA 3.16E-02 1.52E-03 1.36E-03 AP 08 455084007 7/18/2018 BETA 2.27E-02 1.04E-03 8.47E-04 AP 08 456459007 8/1/2018 BETA 2.18E-02 1.09E-03 9.07E-04 AP 08 457694007 8/15/2018 BETA 4.36E-02 1.68E-03 1.21E-03 AP 08 458640007 8/29/2018 BETA 3.62E-02 1.40E-03 9.79E-04 AP 08 459429007 9/11/2018 BETA 3.02E-02 1.38E-03 1.08E-03 AP 08 460470007 9/26/2018 BETA 1.76E-02 9.94E-04 1.01E-03 AP 08 465128007 9/26/2018 Ac-228 5.16E-04 5.88E-04 2.22E-03 U AP 08 465128007 9/26/2018 Ag-108m 2.74E-05 7.82E-05 2.66E-04 U AP 08 465128007 9/26/2018 Ag-110m -2.38E-05 2.28E-04 7.59E-04 U AP 08 465128007 9/26/2018 Ba-140 -2.14E-01 2.35E-01 6.65E-01 U AP 08 465128007 9/26/2018 Be-7 1.27E-01 1.39E-02 1.31E-02 AP 08 465128007 9/26/2018 Ce-141 -2.17E-03 1.41E-03 3.98E-03 U AP 08 465128007 9/26/2018 Ce-144 -2.03E-04 6.17E-04 2.06E-03 U AP 08 465128007 9/26/2018 Co-57 7.12E-05 8.16E-05 2.90E-04 U AP 08 465128007 9/26/2018 Co-58 4.67E-04 3.77E-04 1.41E-03 U AP 08 465128007 9/26/2018 Co-60 1.37E-04 1.99E-04 7.09E-04 U AP 08 465128007 9/26/2018 Cr-51 1.47E-04 1.54E-02 5.10E-02 U AP 08 465128007 9/26/2018 Cs-134 -8.23E-05 1.50E-04 4.29E-04 U AP 08 465128007 9/26/2018 Cs-137 -2.43E-04 1.59E-04 3.74E-04 U AP 08 465128007 9/26/2018 Fe-59 1.26E-03 1.23E-03 4.72E-03 U AP 08 465128007 9/26/2018 I-131 -1.65E+00 2.22E+00 0.00E+00 U AP 08 465128007 9/26/2018 K-40 1.06E-03 2.23E-03 8.45E-03 U AP 08 465128007 9/26/2018 La-140 -1.37E-03 5.01E-02 1.62E-01 U AP 08 465128007 9/26/2018 Mn-54 -1.57E-04 1.69E-04 4.94E-04 U AP 08 465128007 9/26/2018 Nb-95 -1.96E-05 3.91E-04 1.21E-03 U AP 08 465128007 9/26/2018 Ru-103 -1.53E-03 8.54E-04 1.86E-03 U AP 08 465128007 9/26/2018 Ru-106 2.09E-03 1.42E-03 4.97E-03 U AP 08 465128007 9/26/2018 Sb-124 -1.17E-03 1.72E-03 4.78E-03 U AP 08 465128007 9/26/2018 Sb-125 1.60E-04 2.79E-04 9.65E-04 U AP 08 465128007 9/26/2018 Se-75 -1.46E-04 3.25E-04 7.31E-04 U AP 08 465128007 9/26/2018 Th-228 -1.09E-05 2.04E-04 6.80E-04 U AP 08 465128007 9/26/2018 Zn-65 -1.35E-04 3.92E-04 1.24E-03 U AP 08 465128007 9/26/2018 Zr-95 -6.75E-04 7.35E-04 1.92E-03 U -170-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 08 461647007 10/10/2018 BETA 2.65E-02 1.28E-03 1.13E-03 AP 08 462687007 10/24/2018 BETA 1.85E-02 9.39E-04 8.73E-04 AP 08 463994007 11/7/2018 BETA 1.49E-02 8.52E-04 8.75E-04 AP 08 465452007 11/21/2018 BETA 1.61E-02 8.72E-04 8.64E-04 AP 08 466541007 12/5/2018 BETA 1.58E-02 9.14E-04 9.79E-04 AP 08 467531007 12/19/2018 BETA 2.59E-02 1.08E-03 9.12E-04 AP 08 469370007 12/19/2018 Ac-228 2.20E-03 8.65E-04 2.84E-03 U AP 08 469370007 12/19/2018 Ag-108m 8.92E-05 1.09E-04 3.82E-04 U AP 08 469370007 12/19/2018 Ag-110m -3.51E-05 2.71E-04 8.52E-04 U AP 08 469370007 12/19/2018 Ba-140 6.14E-02 4.64E-02 1.28E-01 U AP 08 469370007 12/19/2018 Be-7 6.83E-02 8.24E-03 9.09E-03 AP 08 469370007 12/19/2018 Ce-141 -1.57E-03 8.01E-04 1.98E-03 U AP 08 469370007 12/19/2018 Ce-144 -2.46E-04 6.24E-04 1.85E-03 U AP 08 469370007 12/19/2018 Co-57 3.25E-05 7.28E-05 2.46E-04 U AP 08 469370007 12/19/2018 Co-58 -5.09E-04 3.38E-04 6.30E-04 U AP 08 469370007 12/19/2018 Co-60 -1.84E-04 1.40E-04 3.14E-04 U AP 08 469370007 12/19/2018 Cr-51 1.41E-03 6.08E-03 1.91E-02 U AP 08 469370007 12/19/2018 Cs-134 3.55E-04 3.72E-04 6.81E-04 U AP 08 469370007 12/19/2018 Cs-137 3.79E-06 1.65E-04 5.40E-04 U AP 08 469370007 12/19/2018 Fe-59 -1.78E-04 7.70E-04 2.51E-03 U AP 08 469370007 12/19/2018 I-131 1.52E-01 9.60E-02 3.35E-01 U AP 08 469370007 12/19/2018 K-40 0.00E+00 3.65E-03 5.43E-03 U AP 08 469370007 12/19/2018 La-140 -1.70E-02 1.51E-02 3.92E-02 U AP 08 469370007 12/19/2018 Mn-54 -1.22E-05 1.92E-04 6.13E-04 U AP 08 469370007 12/19/2018 Nb-95 5.52E-04 5.67E-04 1.09E-03 U AP 08 469370007 12/19/2018 Ru-103 1.81E-04 3.87E-04 1.34E-03 U AP 08 469370007 12/19/2018 Ru-106 2.11E-04 1.64E-03 5.46E-03 U AP 08 469370007 12/19/2018 Sb-124 1.12E-03 9.84E-04 3.62E-03 U AP 08 469370007 12/19/2018 Sb-125 4.11E-04 3.31E-04 1.17E-03 U AP 08 469370007 12/19/2018 Se-75 3.93E-04 2.25E-04 7.32E-04 U AP 08 469370007 12/19/2018 Th-228 0.00E+00 3.40E-04 5.33E-04 U AP 08 469370007 12/19/2018 Zn-65 1.37E-04 4.22E-04 1.46E-03 U AP 08 469370007 12/19/2018 Zr-95 1.33E-04 7.49E-04 2.37E-03 U AP 08 468040007 1/2/2019 BETA 2.06E-02 9.88E-04 9.37E-04 AP 09 441050008 1/3/2018 BETA 2.07E-02 1.04E-03 6.43E-04 AP 09 441742008 1/16/2018 BETA 2.62E-02 1.22E-03 7.37E-04 AP 09 442981008 1/31/2018 BETA 2.44E-02 1.10E-03 6.00E-04 AP 09 443986008 2/14/2018 BETA 2.14E-02 9.23E-04 7.57E-04 AP 09 444963008 2/28/2018 BETA 2.69E-02 1.04E-03 7.12E-04 AP 09 446154008 3/12/2018 BETA 3.07E-02 3.28E-03 4.13E-03 AP 09 447013008 3/27/2018 BETA 1.40E-02 8.00E-04 8.21E-04 AP 09 450999008 3/28/2018 Ac-228 -6.83E-05 4.74E-04 1.44E-03 U AP 09 450999008 3/28/2018 Ag-108m 9.31E-08 5.56E-05 1.87E-04 U AP 09 450999008 3/28/2018 Ag-110m -2.77E-05 1.87E-04 5.85E-04 U AP 09 450999008 3/28/2018 Ba-140 -2.19E-01 1.18E-01 2.66E-01 U AP 09 450999008 3/28/2018 Be-7 1.00E-01 1.04E-02 1.02E-02 -171-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 09 450999008 3/28/2018 Ce-141 -1.68E-04 1.05E-03 3.36E-03 U AP 09 450999008 3/28/2018 Ce-144 -7.01E-04 5.39E-04 1.50E-03 U AP 09 450999008 3/28/2018 Co-57 8.50E-05 6.01E-05 2.05E-04 U AP 09 450999008 3/28/2018 Co-58 3.80E-04 2.57E-04 5.56E-04 U AP 09 450999008 3/28/2018 Co-60 -1.24E-04 1.19E-04 3.07E-04 U AP 09 450999008 3/28/2018 Cr-51 6.25E-03 7.59E-03 2.72E-02 U AP 09 450999008 3/28/2018 Cs-134 1.06E-04 1.15E-04 4.07E-04 U AP 09 450999008 3/28/2018 Cs-137 -4.78E-05 9.61E-05 2.92E-04 U AP 09 450999008 3/28/2018 Fe-59 -3.96E-04 9.85E-04 3.12E-03 U AP 09 450999008 3/28/2018 I-131 0.00E+00 2.67E+00 0.00E+00 UI AP 09 450999008 3/28/2018 K-40 3.34E-03 2.20E-03 8.22E-03 U AP 09 450999008 3/28/2018 La-140 1.52E-02 4.95E-02 1.70E-01 U AP 09 450999008 3/28/2018 Mn-54 -1.46E-04 1.16E-04 2.79E-04 U AP 09 450999008 3/28/2018 Nb-95 -3.96E-04 3.15E-04 7.97E-04 U AP 09 450999008 3/28/2018 Ru-103 5.37E-05 4.77E-04 1.61E-03 U AP 09 450999008 3/28/2018 Ru-106 -5.65E-04 9.69E-04 2.93E-03 U AP 09 450999008 3/28/2018 Sb-124 -6.06E-04 1.08E-03 2.96E-03 U AP 09 450999008 3/28/2018 Sb-125 4.79E-04 2.57E-04 9.10E-04 U AP 09 450999008 3/28/2018 Se-75 -6.57E-05 1.96E-04 5.92E-04 U AP 09 450999008 3/28/2018 Th-228 2.68E-04 2.53E-04 5.50E-04 U AP 09 450999008 3/28/2018 Zn-65 -3.60E-04 3.04E-04 8.07E-04 U AP 09 450999008 3/28/2018 Zr-95 3.73E-04 6.36E-04 2.16E-03 U AP 09 448060008 4/11/2018 BETA 2.23E-02 1.04E-03 8.86E-04 AP 09 449083008 4/27/2018 BETA 2.38E-02 1.11E-03 9.53E-04 AP 09 449980008 5/9/2018 BETA 2.63E-02 1.27E-03 1.12E-03 AP 09 451344008 5/23/2018 BETA 1.64E-02 9.36E-04 9.44E-04 AP 09 452120008 6/6/2018 BETA 1.70E-02 9.59E-04 9.18E-04 AP 09 453225008 6/20/2018 BETA 1.78E-02 9.59E-04 8.95E-04 AP 09 457762008 6/20/2018 Ac-228 4.13E-04 4.31E-04 1.76E-03 U AP 09 457762008 6/20/2018 Ag-108m 7.07E-06 1.09E-04 3.65E-04 U AP 09 457762008 6/20/2018 Ag-110m 1.26E-04 2.11E-04 7.41E-04 U AP 09 457762008 6/20/2018 Ba-140 1.38E-01 2.08E-01 7.27E-01 U AP 09 457762008 6/20/2018 Be-7 1.15E-01 1.30E-02 1.19E-02 AP 09 457762008 6/20/2018 Ce-141 -1.26E-03 1.80E-03 5.34E-03 U AP 09 457762008 6/20/2018 Ce-144 -8.20E-04 7.61E-04 2.12E-03 U AP 09 457762008 6/20/2018 Co-57 -6.65E-05 9.52E-05 2.82E-04 U AP 09 457762008 6/20/2018 Co-58 -2.82E-04 3.88E-04 1.08E-03 U AP 09 457762008 6/20/2018 Co-60 1.00E-05 1.41E-04 4.78E-04 U AP 09 457762008 6/20/2018 Cr-51 -5.94E-03 1.37E-02 4.45E-02 U AP 09 457762008 6/20/2018 Cs-134 1.90E-04 1.51E-04 5.54E-04 U AP 09 457762008 6/20/2018 Cs-137 1.97E-04 1.32E-04 4.82E-04 U AP 09 457762008 6/20/2018 Fe-59 -1.61E-03 1.50E-03 3.99E-03 U AP 09 457762008 6/20/2018 I-131 0.00E+00 2.40E+00 0.00E+00 UI AP 09 457762008 6/20/2018 K-40 0.00E+00 3.31E-03 5.30E-03 U AP 09 457762008 6/20/2018 La-140 -5.31E-02 9.13E-02 2.62E-01 U AP 09 457762008 6/20/2018 Mn-54 1.92E-04 1.42E-04 5.32E-04 U AP 09 457762008 6/20/2018 Nb-95 -1.23E-04 3.53E-04 1.06E-03 U AP 09 457762008 6/20/2018 Ru-103 -9.48E-04 7.69E-04 2.04E-03 U AP 09 457762008 6/20/2018 Ru-106 2.92E-03 1.77E-03 3.22E-03 U -172-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 09 457762008 6/20/2018 Sb-124 9.43E-04 1.32E-03 4.88E-03 U AP 09 457762008 6/20/2018 Sb-125 -2.75E-04 3.29E-04 9.83E-04 U AP 09 457762008 6/20/2018 Se-75 2.23E-04 2.39E-04 8.53E-04 U AP 09 457762008 6/20/2018 Th-228 5.16E-04 3.39E-04 8.31E-04 U AP 09 457762008 6/20/2018 Zn-65 4.17E-04 3.04E-04 1.23E-03 U AP 09 457762008 6/20/2018 Zr-95 8.30E-04 7.50E-04 2.71E-03 U AP 09 454068008 7/3/2018 BETA 2.85E-02 1.28E-03 9.60E-04 AP 09 455084008 7/17/2018 BETA 2.52E-02 1.13E-03 9.49E-04 AP 09 456459008 8/1/2018 BETA 1.98E-02 9.75E-04 8.13E-04 AP 09 457694008 8/15/2018 BETA 3.58E-02 1.37E-03 9.05E-04 AP 09 458640008 8/29/2018 BETA 4.13E-02 1.60E-03 1.17E-03 AP 09 459429008 9/11/2018 BETA 2.66E-02 1.21E-03 9.67E-04 AP 09 460470008 9/26/2018 BETA 2.04E-02 1.10E-03 1.06E-03 AP 09 465128008 9/26/2018 Ac-228 8.06E-04 5.26E-04 1.97E-03 U AP 09 465128008 9/26/2018 Ag-108m -3.53E-05 9.84E-05 3.16E-04 U AP 09 465128008 9/26/2018 Ag-110m -1.78E-04 2.39E-04 6.55E-04 U AP 09 465128008 9/26/2018 Ba-140 -3.12E-01 2.19E-01 5.54E-01 U AP 09 465128008 9/26/2018 Be-7 1.20E-01 1.38E-02 1.17E-02 AP 09 465128008 9/26/2018 Ce-141 1.66E-03 1.42E-03 4.72E-03 U AP 09 465128008 9/26/2018 Ce-144 1.89E-03 1.00E-03 1.99E-03 U AP 09 465128008 9/26/2018 Co-57 -2.95E-05 8.05E-05 2.50E-04 U AP 09 465128008 9/26/2018 Co-58 1.92E-04 3.23E-04 1.12E-03 U AP 09 465128008 9/26/2018 Co-60 -8.25E-06 1.60E-04 5.32E-04 U AP 09 465128008 9/26/2018 Cr-51 2.48E-02 1.56E-02 5.48E-02 U AP 09 465128008 9/26/2018 Cs-134 6.19E-05 1.63E-04 5.43E-04 U AP 09 465128008 9/26/2018 Cs-137 1.33E-04 1.38E-04 4.82E-04 U AP 09 465128008 9/26/2018 Fe-59 7.67E-05 1.56E-03 5.28E-03 U AP 09 465128008 9/26/2018 I-131 0.00E+00 2.08E+00 0.00E+00 UI AP 09 465128008 9/26/2018 K-40 0.00E+00 2.36E-03 4.68E-03 U AP 09 465128008 9/26/2018 La-140 -4.83E-02 1.00E-01 2.97E-01 U AP 09 465128008 9/26/2018 Mn-54 -3.04E-04 2.26E-04 4.50E-04 U AP 09 465128008 9/26/2018 Nb-95 -2.07E-04 3.75E-04 1.09E-03 U AP 09 465128008 9/26/2018 Ru-103 3.65E-05 6.98E-04 2.32E-03 U AP 09 465128008 9/26/2018 Ru-106 1.82E-03 1.32E-03 4.70E-03 U AP 09 465128008 9/26/2018 Sb-124 6.78E-04 9.17E-04 3.49E-03 U AP 09 465128008 9/26/2018 Sb-125 -4.51E-04 3.14E-04 8.33E-04 U AP 09 465128008 9/26/2018 Se-75 1.71E-04 2.48E-04 8.71E-04 U AP 09 465128008 9/26/2018 Th-228 -9.94E-05 2.00E-04 6.82E-04 U AP 09 465128008 9/26/2018 Zn-65 -1.06E-04 3.88E-04 1.25E-03 U AP 09 465128008 9/26/2018 Zr-95 -2.58E-04 7.91E-04 2.42E-03 U AP 09 461647008 10/10/2018 BETA 2.17E-02 1.07E-03 9.16E-04 AP 09 462687008 10/24/2018 BETA 2.32E-02 1.23E-03 1.18E-03 AP 09 463994008 11/7/2018 BETA 1.56E-02 8.98E-04 8.84E-04 AP 09 465452008 11/21/2018 BETA 2.10E-02 1.01E-03 8.54E-04 AP 09 466541008 12/5/2018 BETA 1.45E-02 8.69E-04 9.12E-04 AP 09 467531008 12/19/2018 BETA 2.75E-02 1.15E-03 8.91E-04 AP 09 469370008 12/19/2018 Ac-228 5.98E-04 7.25E-04 1.91E-03 U -173-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) AP 09 469370008 12/19/2018 Ag-108m 9.36E-06 7.73E-05 2.56E-04 U AP 09 469370008 12/19/2018 Ag-110m -1.12E-04 2.22E-04 7.02E-04 U AP 09 469370008 12/19/2018 Ba-140 1.96E-02 2.25E-02 7.67E-02 U AP 09 469370008 12/19/2018 Be-7 6.22E-02 6.98E-03 5.05E-03 AP 09 469370008 12/19/2018 Ce-141 1.14E-04 6.91E-04 1.12E-03 U AP 09 469370008 12/19/2018 Ce-144 8.05E-04 4.27E-04 1.37E-03 U AP 09 469370008 12/19/2018 Co-57 5.78E-05 4.87E-05 1.61E-04 U AP 09 469370008 12/19/2018 Co-58 3.35E-04 2.57E-04 9.13E-04 U AP 09 469370008 12/19/2018 Co-60 1.18E-04 1.42E-04 5.01E-04 U AP 09 469370008 12/19/2018 Cr-51 4.05E-04 3.89E-03 1.31E-02 U AP 09 469370008 12/19/2018 Cs-134 3.36E-04 1.61E-04 5.62E-04 U AP 09 469370008 12/19/2018 Cs-137 1.20E-04 1.33E-04 4.45E-04 U AP 09 4 69370008 12/19/2018 Fe-59 -1.82E-04 6.79E-04 2.15E-03 U AP 09 469370008 12/19/2018 I-131 -1.69E-02 6.64E-02 2.16E-01 U AP 09 469370008 12/19/2018 K-40 2.68E-03 2.54E-03 3.91E-03 U AP 09 469370008 12/19/2018 La-140 5.17E-04 8.70E-03 2.95E-02 U AP 09 469370008 12/19/2018 Mn-54 4.03E-05 1.28E-04 3.94E-04 U AP 09 469370008 12/19/2018 Nb-95 4.05E-04 2.76E-04 9.79E-04 U AP 09 469370008 12/19/2018 Ru-103 1.42E-05 3.23E-04 1.06E-03 U AP 09 469370008 12/19/2018 Ru-106 -1.55E-05 1.23E-03 3.93E-03 U AP 09 469370008 12/19/2018 Sb-124 5.77E-05 6.84E-04 2.32E-03 U AP 09 469370008 12/19/2018 Sb-125 8.48E-05 2.42E-04 8.14E-04 U AP 09 469370008 12/19/2018 Se-75 -7.01E-06 1.37E-04 4.61E-04 U AP 09 469370008 12/19/2018 Th-228 2.45E-04 2.17E-04 5.42E-04 U AP 09 469370008 12/19/2018 Zn-65 5.57E-04 3.37E-04 1.22E-03 U AP 09 469370008 12/19/2018 Zr-95 -2.32E-04 3.75E-04 1.17E-03 U AP 09 468040008 1/2/2019 BETA 2.09E-02 1.02E-03 9.00E-04 -174-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) CF 01 441050009 1/3/2018 I-131 -7.21E-03 7.06E-03 1.82E-02 U CF 01 441742009 1/16/2018 I-131 -5.30E-04 3.64E-03 1.19E-02 U CF 01 442981009 1/31/2018 I-131 1.98E-03 2.15E-03 8.13E-03 U CF 01 443986009 2/14/2018 I-131 -1.32E-03 4.02E-03 1.30E-02 U CF 01 444963009 2/28/2018 I-131 -2.68E-03 5.42E-03 1.55E-02 U CF 01 446154009 3/12/2018 I-131 4.37E-03 4.72E-03 1.68E-02 U CF 01 447013009 3/28/2018 I-131 -1.27E-03 2.14E-03 5.59E-03 U CF 01 448060009 4/11/2018 I-131 1.04E-03 3.55E-03 1.22E-02 U CF 01 449083009 4/27/2018 I-131 -1.07E-03 2.26E-03 6.53E-03 U CF 01 449980009 5/9/2018 I-131 -3.43E-03 4.96E-03 1.25E-02 U CF 01 451344009 5/23/2018 I-131 -1.65E-03 5.42E-03 1.69E-02 U CF 01 45 2120009 6/6/2018 I-131 2.81E-03 5.50E-03 2.00E-02 U CF 01 453225009 6/20/2018 I-131 -9.32E-04 2.54E-03 8.16E-03 U CF 01 454068009 7/3/2018 I-131 1.29E-03 2.47E-03 8.55E-03 U CF 01 455084009 7/18/2018 I-131 3.18E-03 3.30E-03 1.23E-02 U CF 01 456459009 8/1/2018 I-131 -2.25E-03 3.95E-03 1.17E-02 U CF 01 457694009 8/15/2018 I-131 -6.01E-03 4.49E-03 9.99E-03 U CF 01 458640009 8/29/2018 I-131 -3.43E-03 5.62E-03 1.66E-02 U CF 01 459429009 9/11/2018 I-131 -4.10E-03 4.93E-03 9.65E-03 U CF 01 460470009 9/26/2018 I-131 -1.76E-03 3.48E-03 1.07E-02 U CF 01 461647009 10/10/2018 I-131 1.31E-03 2.83E-03 1.05E-02 U CF 01 462687009 10/24/2018 I-131 -2.44E-03 2.51E-03 6.03E-03 U CF 01 463994009 11/7/2018 I-131 -3.15E-03 1.85E-03 3.48E-03 U CF 01 465452009 11/21/2018 I-131 1.37E-03 4.62E-03 1.61E-02 U CF 01 466541009 12/5/2018 I-131 -1.17E-03 3.57E-03 1.10E-02 U CF 01 467531009 12/19/2018 I-131 2.06E-03 2.10E-03 7.78E-03 U CF 01 468040009 1/2/2019 I-131 -1.19E-03 1.57E-03 4.27E-03 U CF 02 441050010 1/3/2018 I-131 -1.95E-05 4.10E-03 1.35E-02 U CF 02 441742010 1/16/2018 I-131 -2.29E-03 3.01E-03 8.44E-03 U CF 02 442981010 1/31/2018 I-131 -5.03E-03 3.35E-03 7.81E-03 U CF 02 443986010 2/14/2018 I-131 5.32E-04 2.87E-03 1.01E-02 U CF 02 444963010 2/28/2018 I-131 -3.82E-03 3.52E-03 9.29E-03 U CF 02 446154010 3/12/2018 I-131 4.14E-03 3.50E-03 1.30E-02 U CF 02 447013010 3/28/2018 I-131 -1.33E-05 2.81E-03 9.26E-03 U CF 02 448060010 4/11/2018 I-131 1.57E-03 2.13E-03 7.80E-03 U CF 02 449083010 4/27/2018 I-131 2.53E-04 3.12E-03 1.06E-02 U CF 02 449980010 5/9/2018 I-131 2.16E-03 5.72E-03 1.97E-02 U CF 02 451344010 5/23/2018 I-131 -2.21E-03 3.44E-03 9.88E-03 U CF 02 452120010 6/6/2018 I-131 1.65E-03 2.66E-03 1.02E-02 U CF 02 453225010 6/20/2018 I-131 -9.77E-04 2.13E-03 6.66E-03 U CF 02 454068010 7/3/2018 I-131 2.17E-03 2.17E-03 7.75E-03 U CF 02 455084010 7/18/2018 I-131 -7.35E-03 7.25E-03 2.00E-02 U CF 02 456459010 8/1/2018 I-131 -1.64E-03 4.95E-03 1.59E-02 U CF 02 457694010 8/15/2018 I-131 -3.14E-03 4.28E-03 1.21E-02 U CF 02 458640010 8/29/2018 I-131 1.85E-03 3.21E-03 1.21E-02 U CF 02 459429010 9/11/2018 I-131 1.53E-03 5.36E-03 1.89E-02 U CF 02 460470010 9/26/2018 I-131 5.29E-04 2.96E-03 1.02E-02 U CF 02 461647010 10/10/2018 I-131 -1.23E-03 2.94E-03 8.85E-03 U CF 02 462687010 10/24/2018 I-131 -8.46E-04 3.57E-03 1.18E-02 U CF 02 463994010 11/7/2018 I-131 7.98E-04 1.72E-03 6.12E-03 U -175-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) CF 02 465452010 11/21/2018 I-131 2.56E-03 3.80E-03 1.51E-02 U CF 02 466541010 12/5/2018 I-131 -9.77E-05 4.78E-03 1.59E-02 U CF 02 467531010 12/19/2018 I-131 -1.54E-03 1.84E-03 5.36E-03 U CF 02 468040010 1/2/2019 I-131 3.34E-03 2.54E-03 9.33E-03 U CF 03 441050011 1/3/2018 I-131 -3.12E-03 7.66E-03 2.40E-02 U CF 03 441742011 1/16/2018 I-131 -1.28E-03 2.81E-03 8.71E-03 U CF 03 442981011 1/31/2018 I-131 1.22E-03 3.61E-03 1.22E-02 U CF 03 443986011 2/14/2018 I-131 2.55E-03 3.49E-03 1.33E-02 U CF 03 444963011 2/28/2018 I-131 -2.31E-03 3.08E-03 9.14E-03 U CF 03 446154011 3/12/2018 I-131 1.51E-02 7.73E-03 2.88E-02 U CF 03 447013011 3/28/2018 I-131 -2.53E-03 3.49E-03 8.69E-03 U CF 03 448060011 4/11/2018 I-131 1.03E-03 2.13E-03 7.33E-03 U CF 03 449083011 4/27/2018 I-131 2.61E-03 3.12E-03 1.17E-02 U CF 03 449980011 5/9/2018 I-131 -7.58E-04 3.75E-03 1.23E-02 U CF 03 451344011 5/23/2018 I-131 -4.08E-03 2.78E-03 4.54E-03 U CF 03 452120011 6/6/2018 I-131 -1.65E-03 4.31E-03 1.37E-02 U CF 03 453225011 6/20/2018 I-131 4.06E-05 2.03E-03 6.59E-03 U CF 03 454068011 7/3/2018 I-131 -1.54E-03 1.98E-03 5.90E-03 U CF 03 455084011 7/18/2018 I-131 -3.71E-03 2.99E-03 6.25E-03 U CF 03 456459011 8/1/2018 I-131 -7.81E-03 4.45E-03 9.10E-03 U CF 03 457694011 8/15/2018 I-131 7.40E-04 3.74E-03 1.30E-02 U CF 03 458640011 8/29/2018 I-131 3.83E-03 4.34E-03 1.63E-02 U CF 03 459429011 9/10/2018 I-131 6.82E-03 7.04E-03 2.63E-02 U CF 03 461647011 10/10/2018 I-131 -2.79E-03 3.46E-03 9.13E-03 U CF 03 462687011 10/24/2018 I-131 1.36E-04 2.03E-03 6.92E-03 U CF 03 463994011 11/7/2018 I-131 -1.53E-04 1.32E-03 4.41E-03 U CF 03 465452011 11/21/2018 I-131 -3.29E-03 2.81E-03 5.57E-03 U CF 03 466541011 12/5/2018 I-131 -1.05E-03 3.61E-03 1.17E-02 U CF 03 467531011 12/19/2018 I-131 6.43E-04 2.00E-03 6.33E-03 U CF 03 468040011 1/2/2019 I-131 1.53E-03 1.95E-03 7.05E-03 U CF 04 441050012 1/3/2018 I-131 -6.88E-03 3.97E-03 6.99E-03 U CF 04 441742012 1/16/2018 I-131 -2.58E-03 3.39E-03 9.28E-03 U CF 04 442981012 1/31/2018 I-131 4.49E-04 3.28E-03 1.11E-02 U CF 04 443986012 2/14/2018 I-131 -2.56E-04 4.36E-03 1.43E-02 U CF 04 444963012 2/28/2018 I-131 3.23E-03 2.61E-03 1.01E-02 U CF 04 446154012 3/12/2018 I-131 -3.29E-03 3.15E-03 7.67E-03 U CF 04 447013012 3/28/2018 I-131 3.96E-03 5.05E-03 1.89E-02 U CF 04 448060012 4/11/2018 I-131 -2.02E-03 2.76E-03 8.41E-03 U CF 04 449083012 4/27/2018 I-131 2.98E-03 4.02E-03 1.44E-02 U CF 04 449980012 5/9/2018 I-131 6.14E-03 6.90E-03 2.60E-02 U CF 04 451344012 5/23/2018 I-131 -6.20E-03 3.43E-03 5.21E-03 U CF 04 452120012 6/6/2018 I-131 -3.45E-03 3.01E-03 6.78E-03 U CF 04 453225012 6/20/2018 I-131 -1.34E-03 1.80E-03 5.41E-03 U CF 04 454068012 7/3/2018 I-131 -1.37E-03 1.86E-03 5.74E-03 U CF 04 455084012 7/18/2018 I-131 -8.37E-04 3.45E-03 1.10E-02 U CF 04 456459012 8/1/2018 I-131 4.83E-03 5.89E-03 2.21E-02 U CF 04 457694012 8/15/2018 I-131 -1.58E-03 4.94E-03 1.54E-02 U CF 04 458640012 8/29/2018 I-131 5.44E-04 8.81E-04 4.06E-03 U CF 04 459429012 9/11/2018 I-131 1.28E-02 7.62E-03 2.00E-02 U -176-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) CF 04 460470012 9/26/2018 I-131 -1.06E-03 2.74E-03 8.31E-03 U CF 04 461647012 10/10/2018 I-131 -1.29E-03 3.45E-03 1.10E-02 U CF 04 462687012 10/24/2018 I-131 5.85E-03 6.40E-03 1.42E-02 U CF 04 463994012 11/7/2018 I-131 5.65E-03 3.44E-03 1.62E-02 U CF 04 465452012 11/21/2018 I-131 2.77E-03 3.70E-03 1.39E-02 U CF 04 466541012 12/5/2018 I-131 2.61E-03 5.78E-03 1.99E-02 U CF 04 467531012 12/19/2018 I-131 2.38E-03 2.70E-03 9.52E-03 U CF 04 468040012 1/2/2019 I-131 -2.29E-03 2.10E-03 5.06E-03 U CF 05 441050013 1/3/2018 I-131 2.23E-03 3.42E-03 1.26E-02 U CF 05 441742013 1/16/2018 I-131 -3.55E-03 3.18E-03 8.26E-03 U CF 05 442981013 1/31/2018 I-131 -8.23E-04 2.79E-03 8.23E-03 U CF 05 443986013 2/14/2018 I-131 -4.55E-04 3.32E-03 1.08E-02 U CF 05 444963013 2/28/2018 I-131 -3.23E-04 3.12E-03 1.02E-02 U CF 05 446154013 3/12/2018 I-131 4.71E-03 4.69E-03 1.71E-02 U CF 05 447013013 3/28/2018 I-131 -2.30E-05 2.26E-03 7.59E-03 U CF 05 448060013 4/11/2018 I-131 -3.75E-03 2.73E-03 7.21E-03 U CF 05 449083013 4/27/2018 I-131 4.15E-03 3.27E-03 1.27E-02 U CF 05 449980013 5/9/2018 I-131 1.34E-03 3.94E-03 1.38E-02 U CF 05 451344013 5/23/2018 I-131 -1.84E-04 4.00E-03 1.36E-02 U CF 05 452120013 6/6/2018 I-131 -4.19E-03 3.74E-03 9.65E-03 U CF 05 453225013 6/20/2018 I-131 -2.19E-03 1.58E-03 4.32E-03 U CF 05 454068013 7/3/2018 I-131 -6.38E-04 2.08E-03 6.74E-03 U CF 05 455084013 7/18/2018 I-131 6.71E-04 3.76E-03 1.31E-02 U CF 05 456459013 8/1/2018 I-131 -1.06E-03 3.54E-03 1.10E-02 U CF 05 457694013 8/15/2018 I-131 6.25E-03 4.09E-03 1.65E-02 U CF 05 45864001 3 8/29/2018 I-131 6.59E-03 5.48E-03 2.07E-02 U CF 05 459429013 9/12/2018 I-131 -8.30E-03 5.43E-03 1.15E-02 U CF 05 460470013 9/26/2018 I-131 -1.99E-03 3.26E-03 9.62E-03 U CF 05 461647013 10/10/2018 I-131 -2.21E-05 3.84E-03 1.27E-02 U CF 05 462687013 10/24/2018 I-131 -4.14E-03 2.51E-03 5.65E-03 U CF 05 463994013 11/7/2018 I-131 -1.50E-03 2.38E-03 7.24E-03 U CF 05 465452013 11/21/2018 I-131 -1.71E-04 2.88E-03 9.92E-03 U CF 05 466541013 12/5/2018 I-131 3.88E-04 3.38E-03 1.18E-02 U CF 05 467531013 12/19/2018 I-131 -3.64E-04 2.15E-03 7.11E-03 U CF 05 468040013 1/2/2019 I-131 2.79E-03 2.04E-03 7.68E-03 U CF 07 441050014 1/3/2018 I-131 2.92E-03 5.23E-03 1.83E-02 U CF 07 441742014 1/16/2018 I-131 7.82E-04 3.30E-03 1.13E-02 U CF 07 442981014 1/31/2018 I-131 -8.91E-04 2.10E-03 6.66E-03 U CF 07 443986014 2/14/2018 I-131 -7.29E-03 4.62E-03 9.25E-03 U CF 07 444963014 2/28/2018 I-131 -2.49E-04 2.76E-03 8.90E-03 U CF 07 446154014 3/12/2018 I-131 -4.37E-04 4.02E-03 1.13E-02 U CF 07 447013014 3/28/2018 I-131 2.53E-04 2.10E-03 7.47E-03 U CF 07 448060014 4/11/2018 I-131 4.48E-03 3.67E-03 8.24E-03 U CF 07 449083014 4/27/2018 I-131 -4.81E-04 3.31E-03 1.09E-02 U CF 07 449980014 5/9/2018 I-131 2.37E-04 3.76E-03 1.27E-02 U CF 07 451344014 5/23/2018 I-131 2.86E-04 3.07E-03 1.06E-02 U CF 07 452120014 6/6/2018 I-131 2.69E-03 3.38E-03 1.26E-02 U CF 07 453225014 6/20/2018 I-131 -1.49E-03 1.46E-03 4.15E-03 U CF 07 454068014 7/3/2018 I-131 3.23E-03 2.32E-03 8.26E-03 U -177-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) CF 07 455084014 7/18/2018 I-131 -2.41E-03 1.73E-03 4.58E-03 U CF 07 456459014 8/1/2018 I-131 -9.84E-04 5.70E-03 1.90E-02 U CF 07 457694014 8/15/2018 I-131 4.27E-03 3.42E-03 1.36E-02 U CF 07 458640014 8/29/2018 I-131 -3.25E-03 4.29E-03 1.17E-02 U CF 07 459429014 9/12/2018 I-131 4.00E-03 4.39E-03 1.66E-02 U CF 07 460470014 9/26/2018 I-131 4.98E-03 3.00E-03 1.19E-02 U CF 07 461647014 10/10/2018 I-131 -1.09E-03 4.00E-03 1.28E-02 U CF 07 462687014 10/24/2018 I-131 8.87E-04 4.11E-03 1.31E-02 U CF 07 463994014 11/7/2018 I-131 5.69 E-04 2.43E-03 8.28E-03 U CF 07 465452014 11/21/2018 I-131 1.13E-04 4.43E-03 1.51E-02 U CF 07 466541014 12/5/2018 I-131 1.81E-03 4.36E-03 1.55E-02 U CF 07 467531014 12/19/2018 I-131 -1.87E-04 2.00E-03 6.58E-03 U CF 07 468040014 1/2/2019 I-131 -5.20E-03 2.36E-03 2.81E-03 U CF 08 441050015 1/3/2018 I-131 1.52E-03 4.96E-03 1.74E-02 U CF 08 441742015 1/16/2018 I-131 1.01E-03 2.61E-03 9.18E-03 U CF 08 442981015 1/31/2018 I-131 -2.24E-03 2.06E-03 5.44E-03 U CF 08 443986015 2/14/2018 I-131 2.19E-03 3.79E-03 1.32E-02 U CF 08 444963015 2/28/2018 I-131 -2.07E-03 2.62E-03 7.55E-03 U CF 08 446154015 3/12/2018 I-131 -3.14E-03 2.76E-03 6.16E-03 U CF 08 447013015 3/28/2018 I-131 9.22E-04 3.26E-03 1.15E-02 U CF 08 448060015 4/11/2018 I-131 1.86E-03 2.91E-03 1.04E-02 U CF 08 449083015 4/27/2018 I-131 1.16E-03 3.27E-03 1.16E-02 U CF 08 449980015 5/9/2018 I-131 1.99E-03 3.54E-03 1.30E-02 U CF 08 451344015 5/23/2018 I-131 -5.54E-03 4.37E-03 8.84E-03 U CF 08 452120015 6/6/2018 I-131 1.84E-03 3.43E-03 1.24E-02 U CF 08 453225015 6/8/2018 I-131 -3.22E-02 2.22E-02 5.81E-02 U CF 08 454068015 7/3/2018 I-131 1.37E-03 2.33E-03 7.92E-03 U CF 08 455084015 7/18/2018 I-131 9.84E-04 3.96E-03 1.24E-02 U CF 08 456459015 8/1/2018 I-131 -2.50E-03 3.15E-03 8.36E-03 U CF 08 457694015 8/15/2018 I-131 -1.09E-03 4.65E-03 1.50E-02 U CF 08 458640015 8/29/2018 I-131 8.45E-03 5.21E-03 2.07E-02 U CF 08 459429015 9/11/2018 I-131 -7.34E-03 7.63E-03 2.03E-02 U CF 08 460470015 9/26/2018 I-131 -4.34E-03 3.37E-03 6.77E-03 U CF 08 461647015 10/10/2018 I-131 3.93E-03 3.07E-03 1.22E-02 U CF 08 462687015 10/24/2018 I-131 -2.75E-03 2.17E-03 5.65E-03 U CF 08 463994015 11/7/2018 I-131 7.55E-05 1.86E-03 6.18E-03 U CF 08 465452015 11/21/2018 I-131 -2.68E-03 3.43E-03 9.27E-03 U CF 08 466541015 12/5/2018 I-131 1.40E-03 3.51E-03 1.24E-02 U CF 08 467531015 12/19/2018 I-131 4.11E-04 1.45E-03 5.13E-03 U CF 08 468040015 1/2/2019 I-131 -3.48E-03 2.00E-03 4.23E-03 U CF 09 441050016 1/3/2018 I-131 1.08E-03 3.13E-03 1.09E-02 U CF 09 441742016 1/16/2018 I-131 -3.51E-03 3.23E-03 6.33E-03 U CF 09 442981016 1/31/2018 I-131 2.93E-03 3.41E-03 1.27E-02 U CF 09 443986016 2/14/2018 I-131 1.56E-05 2.32E-03 7.68E-03 U CF 09 444963016 2/28/2018 I-131 3.92E-03 4.49E-03 1.69E-02 U CF 09 446154016 3/12/2018 I-131 3.60E-02 2.52E-02 4.78E-02 U CF 09 447013016 3/27/2018 I-131 4.45E-03 3.28E-03 1.28E-02 U CF 09 448060016 4/11/2018 I-131 1.38E-03 2.48E-03 8.71E-03 U CF 09 449083016 4/27/2018 I-131 -7.33E-03 3.67E-03 5.56E-03 U -178-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m 3) (pCi/m 3) (pCi/m 3) CF 09 449980016 5/9/2018 I-131 -1.03E-02 6.79E-03 1.27E-02 U CF 09 451344016 5/23/2018 I-131 1.66E-03 4.35E-03 1.55E-02 U CF 09 452120016 6/6/2018 I-131 -3.56E-04 3.20E-03 1.06E-02 U CF 09 453225016 6/20/2018 I-131 1.12E-03 2.19E-03 7.66E-03 U CF 09 454068016 7/3/2018 I-131 1.40E-03 1.66E-03 5.99E-03 U CF 09 455084016 7/17/2018 I-131 5.97E-04 7.61E-03 2.64E-02 U CF 09 456459016 8/1/2018 I-131 2.44E-03 3.46E-03 1.26E-02 U CF 09 457694016 8/15/2018 I-131 2.17E-04 2.77E-03 9.46E-03 U CF 09 458640016 8/29/2018 I-131 -9.00E-04 3.11E-03 9.90E-03 U CF 09 459429016 9/11/2018 I-131 9.61E-03 7.91E-03 2.92E-02 U CF 09 460470016 9/26/2018 I-131 -3.47E-03 1.91E-03 3.50E-03 U CF 09 461647016 10/10/2018 I-131 3.42E-03 2.73E-03 1.09E-02 U CF 09 462687016 10/24/2018 I-131 3.87E-03 2.94E-03 1.08E-02 U CF 09 463994016 11/7/2018 I-131 -5.91E-04 3.35E-03 1.11E-02 U CF 09 465452016 11/21/2018 I-131 2.57E-03 4.48E-03 1.70E-02 U CF 09 466541016 12/5/2018 I-131 1.43E-03 3.69E-03 1.32E-02 U CF 09 467531016 12/19/2018 I-131 -2.73E-03 2.08E-03 5.58E-03 U CF 09 468040016 1/2/2019 I-131 -3.90E-04 1.72E-03 5.57E-03 U -179-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH 03 457587001 8/14/2018 Ac-228 1.26E+01 1.70E+01 3.81E+01 U FH 03 457587001 8/14/2018 Ag-108m 5.13E-01 1.70E+00 5.76E+00 U FH 03 457587001 8/14/2018 Ag-110m 2.18E+00 3.20E+00 1.13E+01 U FH 03 457587001 8/14/2018 Ba-140 -1.29E+01 1.13E+01 3.20E+01 U FH 03 457587001 8/14/2018 Be-7 -4.00E+01 2.19E+01 5.30E+01 U FH 03 457587001 8/14/2018 Bi-214 1.65E+01 7.28E+00 1.96E+01 U FH 03 457587001 8/14/2018 Ce-141 -5.82E+00 4.12E+00 1.09E+01 U FH 03 457587001 8/14/2018 Ce-144 -1.72E+01 1.33E+01 3.80E+01 U FH 03 457587001 8/14/2018 Co-57 4.31E-01 1.56E+00 5.11E+00 U FH 03 457587001 8/14/2018 Co-58 -4.54E+00 3.03E+00 7.05E+00 U FH 03 457587001 8/14/2018 Co-60 1.42E+00 2.68E+00 9.21E+00 U FH 03 457587001 8/14/2018 Cr-51 1.91E+01 2.13E+01 7.36E+01 U FH 03 457587001 8/14/2018 Cs-134 3.89E+00 3.12E+00 9.65E+00 U FH 03 457587001 8/14/2018 Cs-137 -3.34E+00 2.44E+00 6.43E+00 U FH 03 457587001 8/14/2018 Fe-59 -3.00E-01 5.76E+00 1.81E+01 U FH 03 457587001 8/14/2018 I-131 6.38E+00 5.89E+00 1.21E+01 U FH 03 457587001 8/14/2018 K-40 3.15E+03 2.06E+02 7.90E+01 FH 03 457587001 8/14/2018 La-140 2.10E+00 3.57E+00 1.24E+01 U FH 03 457587001 8/14/2018 Mn-54 1.60E+00 2.19E+00 7.74E+00 U FH 03 457587001 8/14/2018 Nb-95 3.44E+00 5.46E+00 6.69E+00 U FH 03 457587001 8/14/2018 Pb-212 1.45E+00 6.70E+00 1.46E+01 U FH 03 457587001 8/14/2018 Pb-214 8.76E+00 5.71E+00 1.79E+01 U FH 03 457587001 8/14/2018 Ra-226 1.65E+01 7.28E+00 1.96E+01 U FH 03 457587001 8/14/2018 Ru-103 3.57E-01 2.28E+00 7.56E+00 U FH 03 457587001 8/14/2018 Ru-106 4.89E+01 2.39E+01 7.93E+01 U FH 03 457587001 8/14/2018 Sb-124 -5.92E+00 5.29E+00 1.27E+01 U FH 03 457587001 8/14/2018 Sb-125 -4.59E+00 4.99E+00 1.50E+01 U FH 03 457587001 8/14/2018 Se-75 0.00E+00 7.58E+00 8.84E+00 U FH 03 457587001 8/14/2018 Th-228 1.45E+00 6.70E+00 1.46E+01 U FH 03 457587001 8/14/2018 Th-230 1.65E+01 7.27E+00 1.96E+01 U FH 03 457587001 8/14/2018 Tl-208 -2.77E+00 2.95E+00 7.88E+00 U FH 03 457587001 8/14/2018 Zn-65 9.24E+00 6.74E+00 2.09E+01 U FH 03 457587001 8/14/2018 Zr-95 -9.72E-01 4.73E+00 1.30E+01 U FH 03 451281001 5/21/2018 Ac-228 -3.39E+01 1.61E+01 3.61E+01 U FH 03 451281001 5/21/2018 Ag-108m 3.17E+00 2.81E+00 9.88E+00 U FH 03 451281001 5/21/2018 Ag-110m 6.21E-01 5.85E+00 1.97E+01 U FH 03 451281001 5/21/2018 Ba-140 -9.75E+00 2.66E+01 7.02E+01 U FH 03 451281001 5/21/2018 Be-7 -8.61E-01 3.35E+01 1.08E+02 U FH 03 451281001 5/21/2018 Bi-214 1.63E+01 1.31E+01 3.12E+01 U FH 03 451281001 5/21/2018 Ce-141 -1.39E+01 8.13E+00 2.11E+01 U FH 03 451281001 5/21/2018 Ce-144 2.21E+01 2.14E+01 7.02E+01 U FH 03 451281001 5/21/2018 Co-57 4.45E-01 2.75E+00 8.79E+00 U FH 03 451281001 5/21/2018 Co-58 -8.50E+00 4.98E+00 1.19E+01 U FH 03 451281001 5/21/2018 Co-60 6.30E+00 4.36E+00 1.64E+01 U FH 03 451281001 5/21/2 018 Cr-51 -2.31E+01 3.87E+01 1.21E+02 U FH 03 451281001 5/21/2018 Cs-134 3.11E+00 5.02E+00 1.76E+01 U FH 03 451281001 5/21/2018 Cs-137 5.78E+00 3.86E+00 1.42E+01 U FH 03 451281001 5/21/2018 Fe-59 -5.81E+00 9.11E+00 2.65E+01 U FH 03 451281001 5/21/2018 I-131 -2.25E+00 1.25E+01 4.04E+01 U FH 03 451281001 5/21/2018 K-40 3.22E+03 2.81E+02 1.34E+02 -180-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH 03 451281001 5/21/2018 La-140 1.90E+01 9.56E+00 3.94E+01 U FH 03 451281001 5/21/2018 Mn-54 9.80E-01 4.21E+00 1.43E+01 U FH 03 451281001 5/21/2018 Nb-95 2.39E+00 3.30E+00 1.20E+01 U FH 03 451281001 5/21/2018 Pb-212 -1.26E+00 6.82E+00 2.35E+01 U FH 03 451281001 5/21/2018 Pb-214 4.55E+00 9.01E+00 3.15E+01 U FH 03 451281001 5/21/2018 Ra-226 1.63E+01 1.31E+01 3.12E+01 U FH 03 451281001 5/21/2018 Ru-103 5.16E+00 3.87E+00 1.37E+01 U FH 03 451281001 5/21/2018 Ru-106 -9.18E+00 3.06E+01 9.26E+01 U FH 03 451281001 5/21/2018 Sb-124 1.45E-01 5.50E+00 1.85E+01 U FH 03 451281001 5/21/2018 Sb-125 -1.12E+01 9.77E+00 2.69E+01 U FH 03 451281001 5/21/2018 Se-75 3.19E+00 4.90E+00 1.69E+01 U FH 03 451281001 5/21/2018 Th-228 -1.26E+00 6.82E+00 2.35E+01 U FH 03 451281001 5/21/2018 Th-230 1.63E+01 1.31E+01 3.12E+01 U FH 03 451281001 5/21/2018 Tl-208 -5.31E+00 4.79E+00 1.48E+01 U FH 03 451281001 5/21/2018 Zn-65 -1.53E+01 1.09E+01 2.70E+01 U FH 03 451281001 5/21/2018 Zr-95 -4.57E+00 7.98E+00 2.50E+01 U FH 03 466612001 11/12/2018 Ac-228 -8.23E+00 1.34E+01 4.05E+01 U FH 03 466612001 11/12/2018 Ag-108m 3.03E+00 2.69E+00 8.21E+00 U FH 03 466612001 11/12/2018 Ag-110m -5.54E-01 4.11E+00 1.36E+01 U FH 03 466612001 11/12/2018 Ba-140 -5.75E+01 5.59E+01 1.60E+02 U FH 03 466612001 11/12/2018 Be-7 1.73E+01 3.38E+01 1.12E+02 U FH 03 466612001 11/12/2018 Bi-214 6.27E+00 6.65E+00 2.08E+01 U FH 03 466612001 11/12/2018 Ce-141 -8.78E+00 7.64E+00 2.41E+01 U FH 03 466612001 11/12/2018 Ce-144 6.92E+00 1.58E+01 5.49E+01 U FH 03 466612001 11/12/2018 Co-57 -1.70E+00 2.02E+00 6.58E+00 U FH 03 466612001 11/12/2018 Co-58 5.93E-01 3.44E+00 1.17E+01 U FH 03 466612001 11/12/2018 Co-60 2.48E+00 2.78E+00 9.85E+00 U FH 03 466612001 11/12/2018 Cr-51 3.66E+01 4.76E+01 1.61E+02 U FH 03 466612001 11/12/2018 Cs-134 9.14E-01 3.70E+00 1.27E+01 U FH 03 466612001 11/12/2018 Cs-137 4.03E+00 3.10E+00 1.04E+01 U FH 03 466612001 11/12/2018 Fe-59 3.15E+01 1.31E+01 4.28E+01 U FH 03 466612001 11/12/2018 I-131 5.16E+01 4.51E+01 1.52E+02 U FH 03 466612001 11/12/2018 K-40 3.18E+03 2.18E+02 1.08E+02 FH 03 466612001 11/12/2018 La-140 6.14E+00 1.84E+01 6.16E+01 U FH 03 466612001 11/12/2018 Mn-54 4.49E+00 3.80E+00 1.31E+01 U FH 03 466612001 11/12/2018 Nb-95 3.94E+00 3.95E+00 1.39E+01 U FH 03 466612001 11/12/2018 Pb-212 -3.82E+00 5.73E+00 1.73E+01 U FH 03 466612001 11/12/2018 Pb-214 -1.51E+00 7.77E+00 2.24E+01 U FH 03 466612001 11/12/2018 Ra-226 6.27E+00 6.65E+00 2.08E+01 U FH 03 466612001 11/12/2018 Ru-103 1.80E+00 4.63E+00 1.53E+01 U FH 03 466612001 11/12/2018 Ru-106 -8.94E+00 2.41E+01 7.39E+01 U FH 03 466612001 11/12/2018 Sb-124 1.84E+00 8.52E+00 2.81E+01 U FH 03 466612001 11/12/2018 Sb-125 -6.79E+00 7.43E+00 1.91E+01 U FH 03 466612001 11/12/2018 Se-75 -3.75E+00 4.15E+00 1.30E+01 U FH 03 466612001 11/12/2018 Th-228 -3.82E+00 5.73E+00 1.73E+01 U FH 03 466612001 11/12/2018 Th-230 6.27E+00 6.65E+00 2.08E+01 U FH 03 466612001 11/12/201 8 Tl-208 1.43E+00 4.00E+00 1.15E+01 U FH 03 466612001 11/12/2018 Zn-65 1.48E+01 6.91E+00 2.06E+01 U FH 03 466612001 11/12/2018 Zr-95 -8.89E-02 6.96E+00 2.35E+01 U -181-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH 03 466612004 11/12/2018 Ac-228 2.93E+01 1.37E+01 3.45E+01 U FH 03 466612004 11/12/2018 Ag-108m 7.13E-01 1.74E+00 5.82E+00 U FH 03 466612004 11/12/2018 Ag-110m 5.68E-01 2.97E+00 1.02E+01 U FH 03 466612004 11/12/2018 Ba-140 7.89E+00 3.64E+01 1.20E+02 U FH 03 466612004 11/12/2018 Be-7 -3.58E+01 2.72E+01 7.59E+01 U FH 03 466612004 11/12/2018 Bi-214 6.83E+00 9.53E+00 1.98E+01 U FH 03 466612004 11/12/2018 Ce-141 -8.02E+00 5.54E+00 1.67E+01 U FH 03 466612004 11/12/2018 Ce-144 -1.85E+01 1.29E+01 3.93E+01 U FH 03 466612004 11/12/2018 Co-57 -1.27E+00 1.85E+00 5.45E+00 U FH 03 466612004 11/12/2018 Co-58 -2.06E+00 2.76E+00 8.68E+00 U FH 03 466612004 11/12/2018 Co-60 2.68E+00 2.55E+00 9.07E+00 U FH 03 466612004 11/12/2018 Cr-51 -2.85E+01 3.51E+01 1.09E+02 U FH 03 466612004 11/12/2018 Cs-134 -2.45E-01 2.58E+00 8.10E+00 U FH 03 466612004 11/12/2018 Cs-137 3.66E+00 2.66E+00 8.94E+00 U FH 03 466612004 11/12/2018 Fe-59 5.34E+00 7.69E+00 2.68E+01 U FH 03 466612004 11/12/2018 I-131 3.10E+01 3.34E+01 1.14E+02 U FH 03 466612004 11/12/2018 K-40 2.64E+03 1.69E+02 6.70E+01 FH 03 466612004 11/12/2018 La-140 7.96E-01 9.79E+00 3.25E+01 U FH 03 466612004 11/12/2018 Mn-54 -2.85E+00 2.42E+00 6.61E+00 U FH 03 466612004 11/12/2018 Nb-95 -5.37E-01 3.72E+00 1.17E+01 U FH 03 466612004 11/12/2018 Pb-212 7.62E-01 6.22E+00 1.12E+01 U FH 03 466612004 11/12/2018 Pb-214 1.18E+01 7.81E+00 1.67E+01 U FH 03 466612004 11/12/2018 Ra-226 6.83E+00 9.53E+00 1.98E+01 U FH 03 466612004 11/12/2018 Ru-103 2.63E+00 3.61E+00 1.21E+01 U FH 03 466612004 11/12/2018 Ru-106 3.51E+00 1.65E+01 5.41E+01 U FH 03 466612004 11/12/2018 Sb-124 -4.38E-01 5.69E+00 1.82E+01 U FH 03 466612004 11/12/2018 Sb-125 -4.45E+00 5.36E+00 1.62E+01 U FH 03 466612004 11/12/2018 Se-75 -3.04E-01 2.72E+00 9.04E+00 U FH 03 466612004 11/12/2018 Th-228 7.62E-01 6.22E+00 1.12E+01 U FH 03 466612004 11/12/2018 Th-230 6.83E+00 9.53E+00 1.98E+01 U FH 03 466612004 11/12/2018 Tl-208 -2.61E+00 2.74E+00 8.03E+00 U FH 03 466612004 11/12/2018 Zn-65 1.27E+01 6.90E+00 2.39E+01 U FH 03 466612004 11/12/2018 Zr-95 -2.74E-01 6.34E+00 2.01E+01 U FH 03 444668001 2/21/2018 Ac-228 5.80E+01 4.68E+01 1.61E+02 U FH 03 444668001 2/21/2018 Ag-108m 4.99E+00 8.48E+00 2.59E+01 U FH 03 444668001 2/21/2018 Ag-110m 9.47E+00 1.16E+01 4.14E+01 U FH 03 444668001 2/21/2018 Ba-140 -7.93E+01 5.95E+01 1.62E+02 U FH 03 444668001 2/21/2018 Be-7 -8.39E+00 7.47E+01 2.40E+02 U FH 03 444668001 2/21/2018 Bi-214 3.03E+00 2.43E+01 7.43E+01 U FH 03 444668001 2/21/2018 Ce-141 -1.96E+00 1.26E+01 4.26E+01 U FH 03 444668001 2/21/2018 Ce-144 -3.05E+01 4.51E+01 1.48E+02 U FH 03 444668001 2/21/2018 Co-57 -3.88E+00 5.50E+00 1.80E+01 U FH 03 444668001 2/21/2018 Co-58 -8.38E-01 9.88E+00 3.31E+01 U FH 03 444668001 2/21/2018 Co-60 -1.03E+01 1.23E+01 2.76E+01 U FH 03 444668001 2/21/2018 Cr-51 1.61E+02 8.94E+01 2.81E+02 U FH 03 444668001 2/21/2018 Cs-134 -3.81E+00 1.20E+01 3.64E+01 U FH 03 444668001 2/21/2018 Cs-137 3.88E+00 1.11E+01 3.61E+01 U FH 03 444668001 2/21/2018 Fe-59 -2.76E+00 2.30E+01 7.56E+01 U FH 03 444668001 2/21/2018 I-131 -1.60E+01 1.65E+01 4.90E+01 U FH 03 444668001 2/21/2018 K-40 3.85E+03 3.97E+02 2.83E+02 -182-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH 03 444668001 2/21/2018 La-140 -1.51E+01 1.49E+01 3.66E+01 U FH 03 444668001 2/21/2018 Mn-54 -5.15E+00 9.14E+00 2.90E+01 U FH 03 444668001 2/21/2018 Nb-95 1.47E+01 7.41E+00 2.45E+01 U FH 03 444668001 2/21/2018 Pb-212 4.11E+01 2.71E+01 5.55E+01 U FH 03 444668001 2/21/2018 Pb-214 7.03E+00 2.06E+01 6.89E+01 U FH 03 444668001 2/21/2018 Ra-226 3.03E+00 2.43E+01 7.43E+01 U FH 03 444668001 2/21/2018 Ru-103 -8.76E-01 7.95E+00 2.54E+01 U FH 03 444668001 2/21/2018 Ru-106 -3.66E+01 7.37E+01 2.21E+02 U FH 03 444668001 2/21/2018 Sb-124 2.84E+01 2.72E+01 9.77E+01 U FH 03 444668001 2/21/2018 Sb-125 1.84E+00 2.10E+01 6.90E+01 U FH 03 444668001 2/21/2018 Se-75 1.90E+00 1.08E+01 3.62E+01 U FH 03 444668001 2/21/2018 Th-228 4.11E+01 2.71E+01 5.55E+01 U FH 03 444668001 2/21/2018 Th-230 3.03E+00 2.43E+01 7.42E+01 U FH 03 444668001 2/21/2018 Tl-208 -2.43E+01 1.27E+01 3.02E+01 U FH 03 444668001 2/21/2018 Zn-65 1.75E+01 2.32E+01 8.10E+01 U FH 03 444668001 2/21/2018 Zr-95 -9.22E+00 1.99E+01 5.97E+01 U FH 06 451281003 5/22/2018 Ac-228 1.56E+01 1.53E+01 5.52E+01 U FH 06 451281003 5/22/2018 Ag-108m -1.02E-01 2.50E+00 8.35E+00 U FH 06 451281003 5/22/2018 Ag-110m 6.72E+00 4.32E+00 1.58E+01 U FH 06 451281003 5/22/2018 Ba-140 9.50E-01 2.19E+01 7.27E+01 U FH 06 451281003 5/22/2018 Be-7 1.48E+01 2.15E+01 7.62E+01 U FH 06 451281003 5/22/2018 Bi-214 -9.01E-01 7.90E+00 2.66E+01 U FH 06 451281003 5/22/2018 Ce-141 -1.07E+01 6.08E+00 1.62E+01 U FH 06 451281003 5/22/2018 Ce-144 0.00E+00 2.58E+01 4.52E+01 U FH 06 451281003 5/22/2018 Co-57 -1.58E+00 2.07E+00 6.29E+00 U FH 06 451281003 5/22/2018 Co-58 3.68E+00 2.64E+00 9.91E+00 U FH 06 451281003 5/22/2018 Co-60 -1.09E+00 4.22E+00 1.34E+01 U FH 06 45128 1003 5/22/2018 Cr-51 2.50E+01 2.93E+01 1.04E+02 U FH 06 451281003 5/22/2018 Cs-134 -3.69E+00 3.90E+00 1.07E+01 U FH 06 451281003 5/22/2018 Cs-137 4.46E+00 5.40E+00 9.94E+00 U FH 06 451281003 5/22/2018 Fe-59 1.08E+01 8.45E+00 3.16E+01 U FH 06 451281003 5/22/2018 I-131 2.32E+00 9.41E+00 3.25E+01 U FH 06 451281003 5/22/2018 K-40 2.34E+03 2.13E+02 1.26E+02 FH 06 451281003 5/22/2018 La-140 -6.62E+00 7.73E+00 1.97E+01 U FH 06 451281003 5/22/2018 Mn-54 7.45E-01 3.29E+00 9.70E+00 U FH 06 451281003 5/22/2018 Nb-95 4.22E+00 3.80E+00 1.33E+01 U FH 06 451281003 5/22/2018 Pb-212 2.05E+00 7.51E+00 1.99E+01 U FH 06 451281003 5/22/2018 Pb-214 1.13E+01 8.21E+00 2.31E+01 U FH 06 451281003 5/22/2018 Ra-226 -9.01E-01 7.90E+00 2.66E+01 U FH 06 451281003 5/22/2018 Ru-103 1.61E+00 2.86E+00 1.00E+01 U FH 06 451281003 5/22/2018 Ru-106 2.13E+01 2.67E+01 9.33E+01 U FH 06 451281003 5/22/2018 Sb-124 -5.68E-01 6.66E+00 2.10E+01 U FH 06 451281003 5/22/2018 Sb-125 -2.34E-01 7.10E+00 2.37E+01 U FH 06 451281003 5/22/2018 Se-75 1.70E+00 3.64E+00 1.18E+01 U FH 06 451281003 5/22/2018 Th-228 2.05E+00 7.51E+00 1.99E+01 U FH 06 451281003 5/22/2018 Th-230 -9.01E-01 7.90E+00 2.66E+01 U FH 06 451281003 5/22/2018 Tl-208 2.25E+00 4.11E+00 1.43E+01 U FH 06 451281003 5/22/2018 Zn-65 5.93E+00 8.60E+00 3.05E+01 U FH 06 451281003 5/22/2018 Zr-95 -2.57E+00 5.88E+00 1.77E+01 U -183-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH 06 466612003 12/6/2018 Ac-228 -4.35E+01 6.68E+01 2.02E+02 U FH 06 466612003 12/6/2018 Ag-108m -7.37E-01 1.20E+01 3.92E+01 U FH 06 466612003 12/6/2018 Ag-110m -3.92E+01 2.36E+01 5.93E+01 U FH 06 466612003 12/6/2018 Ba-140 -2.79E+01 7.49E+01 2.32E+02 U FH 06 466612003 12/6/2018 Be-7 -1.07E+02 1.02E+02 2.89E+02 U FH 06 466612003 12/6/2018 Bi-214 1.08E+01 3.79E+01 1.17E+02 U FH 06 466612003 12/6/2018 Ce-141 5.60E+00 1.61E+01 5.26E+01 U FH 06 466612003 12/6/2018 Ce-144 9.05E+01 5.54E+01 1.83E+02 U FH 06 466612003 12/6/2018 Co-57 1.71E-01 6.89E+00 2.25E+01 U FH 06 466612003 12/6/2018 Co-58 2.16E-03 1.09E+01 3.62E+01 U FH 06 466612003 12/6/2018 Co-60 6.58E+00 1.09E+01 3.58E+01 U FH 06 466612003 12/6/2018 Cr-51 -1.54E+02 1.48E+02 3.96E+02 U FH 06 466612003 12/6/2018 Cs-134 2.37E+00 1.43E+01 4.71E+01 U FH 06 466612003 12/6/2018 Cs-137 2.82E+00 1.57E+01 5.04E+01 U FH 06 466612003 12/6/2018 Fe-59 -1.43E+01 3.32E+01 1.02E+02 U FH 06 466612003 12/6/2018 I-131 1.43E+00 2.28E+01 7.60E+01 U FH 06 466612003 12/6/2018 K-40 2.16E+03 4.78E+02 5.39E+02 FH 06 466612003 12/6/2018 La-140 3.60E+00 3.11E+01 1.04E+02 U FH 06 466612003 12/6/2018 Mn-54 7.52E+00 1.49E+01 4.61E+01 U FH 06 466612003 12/6/2018 Nb-95 2.14E+01 1.47E+01 5.21E+01 U FH 06 466612003 12/6/2018 Pb-212 -3.42E+01 2.47E+01 6.76E+01 U FH 06 466612003 12/6/2018 Pb-214 -2.06E+01 3.08E+01 8.75E+01 U FH 06 466612003 12/6/2018 Ra-226 1.08E+01 3.79E+01 1.17E+02 U FH 06 466612003 12/6/2018 Ru-103 -1.06E+00 1.42E+01 4.57E+01 U FH 06 466612003 12/6/2018 Ru-106 -1.37E+02 1.09E+02 2.76E+02 U FH 06 466612003 12/6/2018 Sb-124 -4.69E+00 3.61E+01 1.28E+02 U FH 06 466612003 12/6/2018 Sb-125 1.82E+01 2.87E+01 9.82E+01 U FH 06 466612003 12/6/2018 Se-75 -7.31E+00 1.37E+01 3.97E+01 U FH 06 466612003 12/6/2018 Th-228 -3.42E+01 2.47E+01 6.76E+01 U FH 06 466612003 12/6/2018 Th-230 1.08E+01 3.79E+01 1.17E+02 U FH 06 466612003 12/6/2018 Tl-208 2.47E+01 1.57E+01 5.30E+01 U FH 06 466612003 12/6/2018 Zn-65 3.61E+01 3.35E+01 1.17E+02 U FH 06 466612003 12/6/2018 Zr-95 -1.95E+01 2.90E+01 8.26E+01 U FH 53 466612002 11/30/2018 Ac-228 2.39E+01 6.89E+01 1.35E+02 U FH 53 466612002 11/30/2018 Ag-108m -1.12E+01 7.59E+00 2.08E+01 U FH 53 466612002 11/30/2018 Ag-110m 9.95E+00 1.00E+01 3.63E+01 U FH 53 466612002 11/30/2018 Ba-140 5.95E+01 6.85E+01 2.14E+02 U FH 53 466612002 11/30/2018 Be-7 -7.90E+01 6.61E+01 1.83E+02 U FH 53 466612002 11/30/2018 Bi-214 2.66E+01 3.12E+01 7.41E+01 U FH 53 466612002 11/30/2018 Ce-141 -4.28E+01 1.93E+01 4.45E+01 U FH 53 466612002 11/30/2018 Ce-144 -4.36E+01 4.86E+01 1.45E+02 U FH 53 466612002 11/30/2018 Co-57 -5.65E-02 5.93E+00 1.91E+01 U FH 53 466612002 11/30/2018 Co-58 -2.56E+00 8.69E+00 2.86E+01 U FH 53 466612002 11/30/2018 Co-60 5.76E+00 9.58E+00 3.31E+01 U FH 53 466612002 11/30/2018 Cr-51 1.60E+02 9.05E+01 3.08E+02 U FH 53 466612002 11/30/2018 Cs-134 -1.58E+01 9.76E+00 2.41E+01 U FH 53 466612002 11/30/2018 Cs-137 1.83E+00 8.88E+00 2.89E+01 U FH 53 466612002 11/30/2018 Fe-59 -1.68E+01 2.11E+01 6.27E+01 U FH 53 466612002 11/30/2018 I-131 3.22E+01 2.79E+01 9.63E+01 U FH 53 466612002 11/30/2018 K-40 2.89E+03 3.31E+02 2.69E+02 -184-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH 53 466612002 11/30/2018 La-140 2.39E+01 1.88E+01 7.06E+01 U FH 53 466612002 11/30/2018 Mn-54 4.97E+00 9.84E+00 3.41E+01 U FH 53 466612002 11/30/2018 Nb-95 2.18E+00 1.11E+01 2.60E+01 U FH 53 466612002 11/30/2018 Pb-212 -8.93E+00 1.69E+01 5.23E+01 U FH 53 466612002 11/30/2018 Pb-214 -6.79E+00 2.06E+01 6.39E+01 U FH 53 466612002 11/30/2018 Ra-226 2.66E+01 3.12E+01 7.41E+01 U FH 53 466612002 11/30/2018 Ru-103 -3.53E+00 9.12E+00 2.87E+01 U FH 53 466612002 11/30/2018 Ru-106 3.33E+01 7.04E+01 2.35E+02 U FH 53 466612002 11/30/2018 Sb-124 1.96E+01 1.75E+01 6.77E+01 U FH 53 466612002 11/30/2018 Sb-125 -9.79E+00 2.33E+01 7.45E+01 U FH 53 466612002 11/30/2018 Se-75 4.78E+00 1.04E+01 3.59E+01 U FH 53 466612002 11/30/2018 Th-228 -8.93E+00 1.69E+01 5.23E+01 U FH 53 466612002 11/30/2018 Th-230 2.66E+01 3.12E+01 7.41E+01 U FH 53 466612002 11/30/2018 Tl-208 -1.12E+01 1.03E+01 2.82E+01 U FH 53 466612002 11/30/2018 Zn-65 2.78E+01 1.76E+01 6.42E+01 U FH 53 466612002 11/30/2018 Zr-95 1.61E+01 1.60E+01 5.73E+01 U FH 53 451281002 5/14/2018 Ac-228 6.27E+00 1.74E+01 5.74E+01 U FH 53 451281002 5/14/2018 Ag-108m -2.29E+00 2.93E+00 9.39E+00 U FH 53 451281002 5/14/2018 Ag-110m 5.88E+00 6.30E+00 2.16E+01 U FH 53 451281002 5/14/2018 Ba-140 7.52E+01 4.30E+01 1.50E+02 U FH 53 451281002 5/14/2018 Be-7 -5.06E+01 3.99E+01 1.18E+02 U FH 53 451281002 5/14/2018 Bi-214 5.51E+00 1.27E+01 3.76E+01 U FH 53 451281002 5/14/2018 Ce-141 -1.62E+00 4.73E+00 1.58E+01 U FH 53 451281002 5/14/2018 Ce-144 -1.33E+01 1.33E+01 4.24E+01 U FH 53 451281002 5/14/2018 Co-57 2.80E+00 1.75E+00 5.69E+00 U FH 53 451281002 5/14/2018 Co-58 -8.46E+00 6.41E+00 1.44E+01 U FH 53 451281002 5/14/2018 Co-60 -2.42E+00 8.25E+00 1.89E+01 U FH 53 451281002 5/14/2018 Cr-51 -6.95E+01 4.80E+01 1.29E+02 U FH 53 451281002 5/14/2018 Cs-134 6.86E+00 5.66E+00 1.80E+01 U FH 53 451281002 5/14/2018 Cs-137 3.73E+00 6.12E+00 1.94E+01 U FH 53 451281002 5/14/2018 Fe-59 -1.19E+01 1.29E+01 3.88E+01 U FH 53 451281002 5/14/2018 I-131 1.90E+01 2.50E+01 8.14E+01 U FH 53 451281002 5/14/2018 K-40 3.34E+03 2.55E+02 1.25E+02 FH 53 451281002 5/14/2018 La-140 9.49E+00 1.95E+01 6.70E+01 U FH 53 451281002 5/14/2018 Mn-54 1.18E+00 4.39E+00 1.30E+01 U FH 53 451281002 5/14/2018 Nb-95 8.40E+00 5.70E+00 1.96E+01 U FH 53 451281002 5/14/2018 Pb-212 -1.08E+01 6.53E+00 1.53E+01 U FH 53 451281002 5/14/2018 Pb-214 7.96E+00 1.28E+01 3.29E+01 U FH 53 451281002 5/14/2018 Ra-226 5.51E+00 1.27E+01 3.76E+01 U FH 53 451281002 5/14/2018 Ru-103 7.31E+00 5.54E+00 1.93E+01 U FH 53 451281002 5/14/2018 Ru-106 0.00E+00 7.43E+01 1.15E+02 U FH 53 451281002 5/14/2018 Sb-124 5.44E+00 1.42E+01 4.81E+01 U FH 53 451281002 5/14/2018 Sb-125 -2.56E+00 9.20E+00 3.10E+01 U FH 53 451281002 5/14/2018 Se-75 7.63E-01 4.06E+00 1.33E+01 U FH 53 451281002 5/14/2018 Th-228 -1.08E+01 6.53E+00 1.53E+01 U FH 53 451281002 5/14/2018 Th-230 5.51E+00 1.27E+01 3.76E+01 U FH 53 451281002 5/14/2018 Tl-208 4.66E-01 4.07E+00 1.23E+01 U FH 53 451281002 5/14/2018 Zn-65 -1.86E+01 1.21E+01 3.23E+01 U FH 53 451281002 5/14/2018 Zr-95 5.59E+00 8.64E+00 2.95E+01 U -185-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH 53 457587002 8/14/2018 Ac-228 7.81E-01 8.27E+00 2.51E+01 U FH 53 457587002 8/14/2018 Ag-108m -3.07E-01 1.68E+00 5.64E+00 U FH 53 457587002 8/14/2018 Ag-110m -3.96E+00 3.36E+00 9.52E+00 U FH 53 457587002 8/14/2018 Ba-140 8.54E+00 8.88E+00 3.10E+01 U FH 53 457587002 8/14/2018 Be-7 1.78E+01 1.72E+01 5.95E+01 U FH 53 457587002 8/14/2018 Bi-214 1.02E+01 5.35E+00 1.73E+01 U FH 53 457587002 8/14/2018 Ce-141 -2.16E+00 3.17E+00 9.70E+00 U FH 53 457587002 8/14/2018 Ce-144 1.62E+01 1.26E+01 4.08E+01 U FH 53 457587002 8/14/2018 Co-57 -2.67E+00 1.67E+00 4.61E+00 U FH 53 457587002 8/14/2018 Co-58 -1.54E+00 1.94E+00 5.78E+00 U FH 53 457587002 8/14/2018 Co-60 2.30E+00 2.14E+00 7.45E+00 U FH 53 457587002 8/14/2018 Cr-51 3.25E+01 1.70E+01 5.74E+01 U FH 53 457587002 8/14/2018 Cs-134 -3.80E-01 2.18E+00 7.05E+00 U FH 53 457587002 8/14/2018 Cs-137 3.83E+00 2.47E+00 8.38E+00 U FH 53 457587002 8/14/2018 Fe-59 8.57E+00 5.29E+00 1.80E+01 U FH 53 457587002 8/14/2018 I-131 -4.22E+00 3.94E+00 1.15E+01 U FH 53 457587002 8/14/2018 K-40 3.70E+03 2.21E+02 6.80E+01 FH 53 457587002 8/14/2018 La-140 -1.30E+00 2.61E+00 8.02E+00 U FH 53 457587002 8/14/2018 Mn-54 4.95E+00 2.25E+00 6.23E+00 U FH 53 457587002 8/14/2018 Nb-95 1.86E-01 2.13E+00 7.03E+00 U FH 53 457587002 8/14/2018 Pb-212 9.61E+00 5.87E+00 1.30E+01 U FH 53 457587002 8/14/2018 Pb-214 5.81E+00 5.07E+00 1.69E+01 U FH 53 457587002 8/14/2018 Ra-226 1.02E+01 5.35E+00 1.73E+01 U FH 53 457587002 8/14/2018 Ru-103 2.20E+00 2.17E+00 7.49E+00 U FH 53 457587002 8/14/2018 Ru-106 -2.94E+00 1.65E+01 5.42E+01 U FH 53 457587002 8/14/2018 Sb-124 1.01E+00 3.96E+00 1.37E+01 U FH 53 457587002 8/14/2018 Sb-125 -9.70E-01 4.70E+00 1.57E+01 U FH 53 457587002 8/14/2018 Se-75 -3.00E+00 2.81E+00 7.57E+00 U FH 53 457587002 8/14/2018 Th-228 9.61E+00 5.87E+00 1.30E+01 U FH 53 457587002 8/14/2018 Th-230 1.02E+01 5.35E+00 1.73E+01 U FH 53 457587002 8/14/2018 Tl-208 0.00E+00 4.22E+00 6.62E+00 U FH 53 457587002 8/14/2018 Zn-65 3.69E+00 5.67E+00 1.89E+01 U FH 53 457587002 8/14/2018 Zr-95 1.19E+00 3.59E+00 1.21E+01 U -186-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) HA 04 451266001 5/15/2018 Ac-228 1.55E+01 1.71E+01 6.40E+01 U HA 04 451266001 5/15/2018 Ag-108m 1.66E+00 3.00E+00 1.05E+01 U HA 04 451266001 5/15/2018 Ag-110m -1.05E+00 5.27E+00 1.74E+01 U HA 04 451266001 5/15/2018 Ba-140 3.86E+01 3.69E+01 1.34E+02 U HA 04 451266001 5/15/2018 Be-7 6.32E+00 2.61E+01 8.98E+01 U HA 04 451266001 5/15/2018 Bi-214 5.17E+00 9.25E+00 3.25E+01 U HA 04 451266001 5/15/2018 Ce-141 -1.17E+01 7.17E+00 1.83E+01 U HA 04 451266001 5/15/2018 Ce-144 0.00E+00 3.11E+01 6.28E+01 U HA 04 451266001 5/15/2018 Co-57 3.98E-01 2.60E+00 8.67E+00 U HA 04 451266001 5/15/2018 Co-58 -4.96E+00 5.07E+00 1.32E+01 U HA 04 451266001 5/15/2018 Co-60 -1.15E-01 4.60E+00 1.50E+01 U HA 04 451266001 5/15/2018 Cr-51 -8.53E+00 4.26E+01 1.43E+02 U HA 04 451266001 5/15/2018 Cs-134 6.03E+00 4.17E+00 1.01E+01 U HA 04 451266001 5/15/2018 Cs-137 3.97E+00 4.18E+00 1.48E+01 U HA 04 451266001 5/15/2018 Fe-59 -6.81E+00 1.21E+01 3.69E+01 U HA 04 451266001 5/15/2018 I-131 1.17E+01 2.75E+01 8.74E+01 U HA 04 451266001 5/15/2018 K-40 2.23E+03 2.35E+02 2.19E+02 HA 04 451266001 5/15/2018 La-140 6.87E+00 6.84E+00 3.10E+01 U HA 04 451266001 5/15/2018 Mn-54 5.10E+00 4.63E+00 1.63E+01 U HA 04 451266001 5/15/2018 Nb-95 1.57E+00 4.78E+00 1.60E+01 U HA 04 451266001 5/15/2018 Pb-212 6.60E+00 8.40E+00 2.32E+01 U HA 04 451266001 5/15/2018 Pb-214 1.57E+01 1.26E+01 3.31E+01 U HA 04 451266001 5/15/2018 Ra-226 5.17E+00 9.25E+00 3.25E+01 U HA 04 451266001 5/15/2018 Ru-103 0.00E+00 6.00E+00 8.52E+00 U HA 04 451266001 5/15/2018 Ru-106 -3.77E+01 3.89E+01 1.00E+02 U HA 04 451266001 5/15/2018 Sb-124 1.06E+01 1.58E+01 5.59E+01 U HA 04 451266001 5/15/2018 Sb-125 -4.41E-01 7.97E+00 2.66E+01 U HA 04 451266001 5/15/2018 Se-75 -7.19E+00 5.67E+00 1.48E+01 U HA 04 451266001 5/15/2018 Th-228 6.60E+00 8.40E+00 2.32E+01 U HA 04 451266001 5/15/2018 Th-230 5.17E+00 9.25E+00 3.25E+01 U HA 04 451266001 5/15/2018 Tl-208 -1.85E+00 3.83E+00 1.20E+01 U HA 04 451266001 5/15/2018 Zn-65 0.00E+00 1.05E+01 1.84E+01 U HA 04 451266001 5/15/2018 Zr-95 1.15E+01 1.27E+01 4.00E+01 U HA 04 466603001 11/25/2018 Ac-228 -1.59E+01 2.34E+01 6.86E+01 U HA 04 466603001 11/25/2018 Ag-108m 3.33E+00 4.27E+00 1.45E+01 U HA 04 466603001 11/25/2018 Ag-110m 2.42E+00 7.31E+00 2.42E+01 U HA 04 466603001 11/25/2018 Ba-140 -3.25E+01 6.09E+01 1.85E+02 U HA 04 466603001 11/25/2018 Be-7 -6.32E+01 5.48E+01 1.53E+02 U HA 04 466603001 11/25/2018 Bi-214 -1.60E+01 1.51E+01 4.23E+01 U HA 0 4 466603001 11/25/2018 Ce-141 -7.90E+00 1.08E+01 3.19E+01 U HA 04 466603001 11/25/2018 Ce-144 3.04E+01 2.85E+01 9.21E+01 U HA 04 466603001 11/25/2018 Co-57 1.67E+00 3.31E+00 1.07E+01 U HA 04 466603001 11/25/2018 Co-58 1.25E+00 5.02E+00 1.72E+01 U HA 04 466603001 11/25/2018 Co-60 6.07E+00 6.32E+00 2.21E+01 U HA 04 466603001 11/25/2018 Cr-51 2.99E+01 5.88E+01 2.00E+02 U HA 04 466603001 11/25/2018 Cs-134 -2.06E+00 5.32E+00 1.70E+01 U HA 04 466603001 11/25/2018 Cs-137 1.29E+01 8.54E+00 1.62E+01 U HA 04 466603001 11/25/2018 Fe-59 -3.14E+00 1.25E+01 3.93E+01 U HA 04 466603001 11/25/2018 I-131 -2.09E+01 2.67E+01 8.16E+01 U HA 04 466603001 11/25/2018 K-40 1.97E+03 2.11E+02 1.93E+02 -187-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) HA 04 466603001 11/25/2018 La-140 -2.29E+01 1.57E+01 3.46E+01 U HA 04 466603001 11/25/2018 Mn-54 7.05E+00 5.13E+00 1.83E+01 U HA 04 466603001 11/25/2018 Nb-95 8.32E-01 6.33E+00 2.14E+01 U HA 04 466603001 11/25/2018 Pb-212 4.57E+00 1.45E+01 3.55E+01 U HA 04 466603001 11/25/2018 Pb-214 0.00E+00 2.17E+01 4.30E+01 U HA 04 466603001 11/25/2018 Ra-226 -1.60E+01 1.51E+01 4.23E+01 U HA 04 466603001 11/25/2018 Ru-103 -4.75E+00 7.96E+00 2.43E+01 U HA 04 466603001 11/25/2018 Ru-106 -2.30E+01 4.80E+01 1.35E+02 U HA 04 466603001 11/25/2018 Sb-124 6.67E-01 1.39E+01 4.65E+01 U HA 04 466603001 11/25/2018 Sb-125 5.87E+00 1.46E+01 4.85E+01 U HA 04 466603001 11/25/2018 Se-75 1.08E+01 6.85E+00 2.33E+01 U HA 04 466603001 11/25/2018 Th-228 4.57E+00 1.45E+01 3.55E+01 U HA 04 466603001 11/25/2018 Th-230 -1.60E+01 1.51E+01 4.23E+01 U HA 04 466603001 11/25/2018 Tl-208 -4.65E+00 7.19E+00 2.13E+01 U HA 04 466603001 11/25/2018 Zn-65 0.00E+00 2.11E+01 2.68E+01 U HA 04 466603001 11/25/2018 Zr-95 3.21E+00 9.62E+00 3.32E+01 U HA 54 451266002 5/21/2018 Ac-228 7.28E+00 1.51E+01 5.50E+01 U HA 54 451266002 5/21/2018 Ag-108m 1.91E+00 2.64E+00 9.22E+00 U HA 54 451266002 5/21/2018 Ag-110m -7.69E+00 4.14E+00 7.79E+00 U HA 54 451266002 5/21/2018 Ba-140 -1.98E+01 2.72E+01 8.03E+01 U HA 54 451266002 5/21/2018 Be-7 -1.91E+00 2.67E+01 8.71E+01 U HA 54 451266002 5/21/2018 Bi-214 1.38E+01 1.20E+01 2.66E+01 U HA 54 451266002 5/21/2018 Ce-141 -9.41E-01 4.87E+00 1.53E+01 U HA 54 451266002 5/21/2018 Ce-144 -1.57E+01 1.95E+01 5.81E+01 U HA 54 451266002 5/21/2018 Co-57 -2.44E+00 2.24E+00 6.39E+00 U HA 54 451266002 5/21/2018 Co-58 -3.71E+00 3.98E+00 1.18E+01 U HA 54 451266002 5/21/2018 Co-60 -2.34E+00 3.65E+00 1.04E+01 U HA 54 451266002 5/21/2018 Cr-51 -3.55E+01 3.13E+01 9.13E+01 U HA 54 451266002 5/21/2018 Cs-134 -4.44E+00 3.09E+00 7.49E+00 U HA 54 451266002 5/21/2018 Cs-137 -1.89E+00 3.94E+00 1.19E+01 U HA 54 451266002 5/21/2018 Fe-59 3.77E+00 9.88E+00 3.06E+01 U HA 54 451266002 5/21/2018 I-131 0.00E+00 1.78E+01 2.98E+01 U HA 54 451266002 5/21/2018 K-40 2.43E+03 2.17E+02 1.19E+02 HA 54 451266002 5/21/2018 La-140 -2.51E+00 7.02E+00 2.01E+01 U HA 54 451266002 5/21/2018 Mn-54 2.39E-01 2.25E+00 6.90E+00 U HA 54 451266002 5/21/2018 Nb-95 4.54E+00 4.28E+00 9.48E+00 U HA 54 451266002 5/21/2018 Pb-212 -1.03E+01 6.13E+00 1.82E+01 U HA 54 451266002 5/21/2018 Pb-214 8.55E+00 8.89E+00 2.86E+01 U HA 54 451266002 5/21/2018 Ra-226 1.38E+01 1.20E+01 2.66E+01 U HA 54 451266002 5/21/2018 Ru-103 -1.32E+00 3.67E+00 1.15E+01 U HA 54 451266002 5/21/2018 Ru-106 4.39E+01 3.26E+01 1.15E+02 U HA 54 451266002 5/21/2018 Sb-124 4.37E+00 7.97E+00 2.96E+01 U HA 54 451266002 5/21/2018 Sb-125 2.90E+00 6.96E+00 2.40E+01 U HA 54 451266002 5/21/2018 Se-75 -2.90E+00 4.60E+00 1.32E+01 U HA 54 451266002 5/21/2018 Th-228 -1.03E+01 6.13E+00 1.82E+01 U HA 54 451266002 5/21/2018 Th-230 1.38E+01 1.20E+01 2.66E+01 U HA 54 451266002 5/21/2018 Tl-208 3.59E+00 3.09E+00 8.89E+00 U HA 54 451266002 5/21/2018 Zn-65 4.90E+00 6.94E+00 2.50E+01 U HA 54 451266002 5/21/2018 Zr-95 7.28E+00 6.87E+00 2.42E+01 U -188-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) HA 54 466603002 11/18/2018 Ac-228 7.11E+01 3.42E+01 8.55E+01 U HA 54 466603002 11/18/2018 Ag-108m 1.36E+00 3.84E+00 1.31E+01 U HA 54 466603002 11/18/2018 Ag-110m 6.93E+00 7.69E+00 2.59E+01 U HA 54 466603002 11/18/2018 Ba-140 1.99E+00 5.72E+01 1.89E+02 U HA 54 466603002 11/18/2018 Be-7 2.16E+01 5.12E+01 1.74E+02 U HA 54 466603002 11/18/2018 Bi-214 -1.22E+01 1.25E+01 3.40E+01 U HA 54 466603002 11/18/2018 Ce-141 -1.62E+01 1.04E+01 2.84E+01 U HA 54 466603002 11/18/2018 Ce-144 -3.67E+00 2.45E+01 7.88E+01 U HA 54 466603002 11/18/2018 Co-57 1.61E+00 3.14E+00 1.04E+01 U HA 54 466603002 11/18/2018 Co-58 -3.50E+00 5.51E+00 1.62E+01 U HA 54 466603002 11/18/2018 Co-60 1.51E+00 4.49E+00 1.39E+01 U HA 54 466603002 11/18/2018 Cr-51 5.37E+01 6.12E+01 2.14E+02 U HA 54 466603002 11/18/2018 Cs-134 2.16E+00 4.79E+00 1.60E+01 U HA 54 466603002 11/18/2018 Cs-137 3.79E+00 7.79E+00 1.46E+01 U HA 54 466603002 11/18/2018 Fe-59 1.97E+01 1.26E+01 4.60E+01 U HA 54 466603002 11/18/2018 I-131 5.44E+01 4.05E+01 1.41E+02 U HA 54 46 6603002 11/18/2018 K-40 2.54E+03 2.23E+02 1.51E+02 HA 54 466603002 11/18/2018 La-140 -1.12E+01 1.66E+01 4.55E+01 U HA 54 466603002 11/18/2018 Mn-54 4.44E+00 5.32E+00 1.79E+01 U HA 54 466603002 11/18/2018 Nb-95 -2.76E+00 5.35E+00 1.61E+01 U HA 54 466603002 11/18/2018 Pb-212 8.99E+00 1.34E+01 3.11E+01 U HA 54 466603002 11/18/2018 Pb-214 -1.66E+00 1.12E+01 3.41E+01 U HA 54 466603002 11/18/2018 Ra-226 -1.22E+01 1.25E+01 3.40E+01 U HA 54 466603002 11/18/2018 Ru-103 6.59E+00 6.81E+00 2.35E+01 U HA 54 466603002 11/18/2018 Ru-106 -4.67E+01 4.48E+01 1.29E+02 U HA 54 466603002 11/18/2018 Sb-124 5.43E+00 1.31E+01 4.52E+01 U HA 54 466603002 11/18/2018 Sb-125 -6.02E+00 1.06E+01 3.37E+01 U HA 54 466603002 11/18/2018 Se-75 -5.34E+00 6.12E+00 1.75E+01 U HA 54 466603002 11/18/2018 Th-228 8.99E+00 1.34E+01 3.11E+01 U HA 54 466603002 11/18/2018 Th-230 -1.22E+01 1.25E+01 3.40E+01 U HA 54 466603002 11/18/2018 Tl-208 0.00E+00 7.84E+00 1.42E+01 U HA 54 466603002 11/18/2018 Zn-65 2.11E+01 1.07E+01 3.34E+01 U HA 54 466603002 11/18/2018 Zr-95 2.05E-01 9.45E+00 2.71E+01 U -189-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) MU 06 451258001 5/14/2018 Ac-228 -2.38E+00 1.21E+01 4.07E+01 U MU 06 451258001 5/14/2018 Ag-108m 2.69E+00 2.27E+00 7.14E+00 U MU 06 451258001 5/14/2018 Ag-110m 5.50E-01 3.06E+00 9.88E+00 U MU 06 451258001 5/14/2018 Ba-140 2.03E+01 2.45E+01 8.42E+01 U MU 06 451258001 5/14/2018 Be-7 0.00E+00 3.95E+01 7.02E+01 U MU 06 451258001 5/14/2018 Bi-214 1.31E+01 8.89E+00 1.73E+01 U MU 06 451258001 5/14/2018 Ce-141 7.34E+00 4.77E+00 1.54E+01 U MU 06 451258001 5/14/2018 Ce-144 -1.88E+01 1.43E+01 3.64E+01 U MU 06 451258001 5/14/2018 Co-57 1.39E+00 1.81E+00 5.91E+00 U MU 06 451258001 5/14/2018 Co-58 9.46E-01 2.76E+00 9.05E+00 U MU 06 451258001 5/14/2018 Co-60 7.95E-01 2.96E+00 1.00E+01 U MU 06 45125 8001 5/14/2018 Cr-51 -1.95E+00 2.74E+01 9.23E+01 U MU 06 451258001 5/14/2018 Cs-134 -1.46E+00 2.65E+00 7.95E+00 U MU 06 451258001 5/14/2018 Cs-137 -1.04E+00 2.48E+00 7.72E+00 U MU 06 451258001 5/14/2018 Fe-59 -4.47E+00 6.39E+00 1.97E+01 U MU 06 451258001 5/14/2018 I-131 1.28E+01 1.78E+01 5.17E+01 U MU 06 451258001 5/14/2018 K-40 1.26E+03 1.22E+02 8.78E+01 MU 06 451258001 5/14/2018 La-140 -8.23E+00 9.83E+00 2.77E+01 U MU 06 451258001 5/14/2018 Mn-54 2.65E+00 2.22E+00 7.04E+00 U MU 06 451258001 5/14/2018 Nb-95 3.44E+00 3.04E+00 1.03E+01 U MU 06 451258001 5/14/2018 Pb-212 1.33E+00 6.60E+00 1.50E+01 U MU 06 451258001 5/14/2018 Pb-214 8.69E+00 9.32E+00 2.10E+01 U MU 06 451258001 5/14/2018 Ra-226 1.31E+01 8.89E+00 1.73E+01 U MU 06 451258001 5/14/2018 Ru-103 -2.87E+00 2.80E+00 8.21E+00 U MU 06 451258001 5/14/2018 Ru-106 -1.36E+01 2.00E+01 6.05E+01 U MU 06 451258001 5/14/2018 Sb-124 1.18E+01 7.84E+00 2.86E+01 U MU 06 451258001 5/14/2018 Sb-125 1.52E+01 7.50E+00 1.90E+01 U MU 06 451258001 5/14/2018 Se-75 1.12E+00 2.89E+00 1.00E+01 U MU 06 451258001 5/14/2018 Th-228 1.33E+00 6.60E+00 1.50E+01 U MU 06 451258001 5/14/2018 Th-230 1.31E+01 8.89E+00 1.73E+01 U MU 06 451258001 5/14/2018 Tl-208 -1.71E+00 3.34E+00 9.97E+00 U MU 06 451258001 5/14/2018 Zn-65 1.02E+01 6.47E+00 2.14E+01 U MU 06 451258001 5/14/2018 Zr-95 4.90E+00 5.33E+00 1.81E+01 U MU 06 464596001 11/12/2018 Ac-228 1.28E+01 1.07E+01 3.75E+01 U MU 06 464596001 11/12/2018 Ag-108m 5.81E-01 1.92E+00 6.30E+00 U MU 06 464596001 11/12/2018 Ag-110m -8.84E-01 2.71E+00 8.75E+00 U MU 06 464596001 11/12/2018 Ba-140 2.07E+01 1.36E+01 4.60E+01 U MU 06 464596001 11/12/2018 Be-7 1.90E+01 2.34E+01 7.74E+01 U MU 06 464596001 11/12/2018 Bi-214 9.40E+00 9.98E+00 1.94E+01 U MU 06 464596001 11/12/2018 Ce-141 -2.63E+00 3.74E+00 1.19E+01 U MU 06 464596001 11/12/2018 Ce-144 -4.21E+00 1.25E+01 4.09E+01 U MU 06 464596001 11/12/2018 Co-57 2.81E+00 1.68E+00 5.60E+00 U MU 06 464596001 11/12/2018 Co-58 -1.54E+00 2.54E+00 8.05E+00 U MU 06 464596001 11/12/2018 Co-60 4.56E-02 2.56E+00 8.39E+00 U MU 06 464596001 11/12/2018 Cr-51 -7.41E+00 2.06E+01 6.53E+01 U MU 06 464596001 11/12/2018 Cs-134 -4.21E+00 2.37E+00 5.77E+00 U MU 06 464596001 11/12/2018 Cs-137 8.96E-01 2.22E+00 7.73E+00 U MU 06 464596001 11/12/2018 Fe-59 1.51E+00 5.61E+00 1.90E+01 U MU 06 464596001 11/12/2018 I-131 -1.13E+01 6.51E+00 1.42E+01 U MU 06 464596001 11/12/2018 K-40 1.06E+03 8.95E+01 6.62E+01 -190-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) MU 06 464596001 11/12/2018 La-140 -1.63E+00 3.85E+00 1.15E+01 U MU 06 464596001 11/12/2018 Mn-54 -2.04E+00 1.83E+00 5.18E+00 U MU 06 464596001 11/12/2018 Nb-95 6.26E+00 3.40E+00 1.05E+01 U MU 06 464596001 11/12/2018 Pb-212 1.51E+01 6.78E+00 1.06E+01 MU 06 464596001 11/12/2018 Pb-214 4.24E+00 6.07E+00 1.74E+01 U MU 06 464596001 11/12/2018 Ra-226 9.40E+00 9.98E+00 1.94E+01 U MU 06 464596001 11/12/2018 Ru-103 3.42E+00 2.55E+00 8.56E+00 U MU 06 464596001 11/12/2018 Ru-106 -3.28E+00 1.82E+01 6.11E+01 U MU 06 464596001 11/12/2018 Sb-124 -9.19E-01 6.97E+00 1.51E+01 U MU 06 464596001 11/12/2018 Sb-125 2.81E+00 5.78E+00 1.91E+01 U MU 06 464596001 11/12/2018 Se-75 2.53E+00 2.68E+00 9.01E+00 U MU 06 464596001 11/12/2018 Th-228 1.51E+01 6.78E+00 1.06E+01 MU 06 464596001 11/12/2018 Th-230 9.40E+00 9.98E+00 1.94E+01 U MU 06 464 596001 11/12/2018 Tl-208 5.74E+00 2.91E+00 6.95E+00 U MU 06 464596001 11/12/2018 Zn-65 -5.33E+00 4.40E+00 1.18E+01 U MU 06 464596001 11/12/2018 Zr-95 1.60E+01 7.36E+00 1.80E+01 U MU 09 451254001 5/15/2018 Ac-228 -1.38E+01 1.57E+01 4.39E+01 U MU 09 451254001 5/15/2018 Ag-108m 6.46E+00 3.69E+00 7.85E+00 U MU 09 451254001 5/15/2018 Ag-110m -2.95E+00 3.67E+00 1.05E+01 U MU 09 451254001 5/15/2018 Ba-140 3.54E+00 2.39E+01 7.95E+01 U MU 09 451254001 5/15/2018 Be-7 6.99E+01 4.33E+01 7.70E+01 U MU 09 451254001 5/15/2018 Bi-214 4.50E+01 8.17E+00 1.56E+01 X (1) MU 09 451254001 5/15/2018 Ce-141 3.59E+00 7.18E+00 1.73E+01 U MU 09 451254001 5/15/2018 Ce-144 1.36E+01 1.55E+01 5.38E+01 U MU 09 451254001 5/15/2018 Co-57 8.94E-01 2.07E+00 7.20E+00 U MU 09 451254001 5/15/2018 Co-58 1.53E+00 3.34E+00 1.01E+01 U MU 09 451254001 5/15/2018 Co-60 9.59E+00 3.48E+00 1.06E+01 U MU 09 451254001 5/15/2018 Cr-51 6.23E+00 2.97E+01 1.01E+02 U MU 09 451254001 5/15/2018 Cs-134 -4.61E+00 2.97E+00 7.14E+00 U MU 09 451254001 5/15/2018 Cs-137 1.22E+00 2.21E+00 6.94E+00 U MU 09 451254001 5/15/2018 Fe-59 -1.99E+00 6.63E+00 2.01E+01 U MU 09 451254001 5/15/2018 I-131 -5.12E+00 1.62E+01 5.30E+01 U MU 09 451254001 5/15/2018 K-40 1.37E+03 1.43E+02 1.32E+02 MU 09 451254001 5/15/2018 La-140 -1.31E+01 9.67E+00 2.34E+01 U MU 09 451254001 5/15/2018 Mn-54 5.84E-01 2.58E+00 8.51E+00 U MU 09 451254001 5/15/2018 Nb-95 6.84E+00 3.58E+00 1.23E+01 U MU 09 451254001 5/15/2018 Pb-212 5.61E+00 6.10E+00 1.75E+01 U MU 09 451254001 5/15/2018 Pb-214 2.39E+01 1.06E+01 2.51E+01 U MU 09 451254001 5/15/2018 Ra-226 4.50E+01 8.17E+00 1.56E+01 MU 09 451254001 5/15/2018 Ru-103 5.99E+00 5.40E+00 9.85E+00 U MU 09 451254001 5/15/2018 Ru-106 3.32E+01 2.32E+01 8.09E+01 U MU 09 451254 001 5/15/2018 Sb-124 2.71E+00 6.16E+00 2.21E+01 U MU 09 451254001 5/15/2018 Sb-125 1.87E+01 8.45E+00 2.28E+01 U MU 09 451254001 5/15/2018 Se-75 9.64E-01 3.25E+00 1.11E+01 U MU 09 451254001 5/15/2018 Th-228 5.61E+00 6.10E+00 1.75E+01 U MU 09 451254001 5/15/2018 Th-230 4.50E+01 8.17E+00 1.56E+01 MU 09 451254001 5/15/2018 Tl-208 1.13E+01 3.90E+00 7.03E+00 MU 09 451254001 5/15/2018 Zn-65 2.90E+00 6.73E+00 2.02E+01 U MU 09 451254001 5/15/2018 Zr-95 -1.33E+00 6.55E+00 2.08E+01 U -191-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) MU 09 464611001 11/13/2018 Ac-228 -1.94E+01 1.42E+01 4.07E+01 U MU 09 464611001 11/13/2018 Ag-108m -2.09E+00 2.02E+00 6.03E+00 U MU 09 464611001 11/13/2018 Ag-110m -5.58E+00 4.24E+00 1.14E+01 U MU 09 464611001 11/13/2018 Ba-140 -3.31E+00 1.62E+01 5.29E+01 U MU 09 464611001 11/13/2018 Be-7 3.41E+01 2.75E+01 9.40E+01 U MU 09 464611001 11/13/2018 Bi-214 1.69E+01 9.50E+00 1.87E+01 U MU 09 464611001 11/13/2018 Ce-141 -1.63E+00 4.65E+00 1.47E+01 U MU 09 464611001 11/13/2018 Ce-144 -1.32E+01 1.76E+01 5.39E+01 U MU 09 464611001 11/13/2018 Co-57 -1.55E+00 2.11E+00 6.46E+00 U MU 09 464611001 11/13/2018 Co-58 -3.31E+00 2.27E+00 5.51E+00 U MU 09 464611001 11/13/2018 Co-60 -1.86E+00 2.71E+00 7.88E+00 U MU 09 464611001 11/13/2018 Cr-51 4.54E+01 2.98E+01 1.01E+02 U MU 09 464611001 11/13/2018 Cs-134 1.54E+00 3.14E+00 1.06E+01 U MU 09 464611001 11/13/2018 Cs-137 -6.39E-01 2.43E+00 7.77E+00 U MU 09 464611001 11/13/2018 Fe-59 -4.53E+00 5.48E+00 1.53E+01 U MU 09 464611001 11/13/2018 I-131 5.12E+00 6.13E+00 2.11E+01 U MU 09 464611001 11/13/2018 K-40 8.94E+02 1.15E+02 9.16E+01 MU 09 464611001 11/13/2018 La-140 -6.91E+00 4.05E+00 6.80E+00 U MU 09 464611001 11/13/2018 Mn-54 8.81E-01 2.69E+00 7.99E+00 U MU 09 464611001 11/13/2018 Nb-95 9.96E-01 2.65E+00 8.92E+00 U MU 09 464611001 11/13/2018 Pb-212 8.74E+00 6.11E+00 1.96E+01 U MU 09 464611001 11/13/2018 Pb-214 -5.48E+00 6.77E+00 1.94E+01 U MU 09 464611001 11/13/2018 Ra-226 1.69E+01 9.50E+00 1.87E+01 U MU 09 464611001 11/13/2018 Ru-103 -2.62E+00 3.05E+00 9.38E+00 U MU 09 464611001 11/13/2018 Ru-106 2.14E+01 2.55E+01 8.72E+01 U MU 09 464611001 11/13/2018 Sb-124 3.83E-01 6.67E+00 2.24E+01 U MU 09 464611001 11/13/2018 Sb-125 -4.87E+00 6.70E+00 2.10E+01 U MU 09 464611001 11/13/2018 Se-75 -1.47E+00 3.54E+00 1.17E+01 U MU 09 464611001 11/13/2018 Th-228 8.74E+00 6.11E+00 1.96E+01 U MU 09 464611001 11/13/2018 Th-230 1.69E+01 9.50E+00 1.87E+01 U MU 09 464611001 11/13/2018 Tl-208 -3.29E+00 3.30E+00 1.04E+01 U MU 09 464611001 11/13/2018 Zn-65 -1.18E+00 6.55E+00 2.06E+01 U MU 09 464611001 11/13/2018 Zr-95 4.55E-01 5.13E+00 1.69E+01 U MU 56 451258002 5/14/2018 Ac-228 -1.43E+01 9.66E+00 2.66E+01 U MU 56 451258002 5/14/2018 Ag-108m -4.12E-01 1.84E+00 5.99E+00 U MU 56 451258002 5/14/2018 Ag-110m 1.49E+00 2.74E+00 9.64E+00 U MU 56 451258002 5/14/2018 Ba-140 7.78E+00 2.25E+01 7.54E+01 U MU 56 451258002 5/14/2018 Be-7 0.00E+00 4.07E+01 7.61E+01 U MU 56 451258002 5/14/2018 Bi-214 0.00E+00 8.66E+00 1.41E+01 U MU 56 451258002 5/14/2018 Ce-141 1.56E+00 4.57E+00 1.48E+01 U MU 56 451258002 5/14/2018 Ce-144 -1.32E+01 1.22E+01 3.58E+01 U MU 56 451258002 5/14/2018 Co-57 2.59E-01 1.51E+00 4.92E+00 U MU 56 451258002 5/14/2018 Co-58 2.57E+00 2.64E+00 9.38E+00 U MU 56 451258002 5/14/2018 Co-60 5.17E+00 4.28E+00 1.04E+01 U MU 56 45125 8002 5/14/2018 Cr-51 7.36E+00 2.41E+01 8.27E+01 U MU 56 451258002 5/14/2018 Cs-134 2.77E-01 2.04E+00 7.02E+00 U MU 56 451258002 5/14/2018 Cs-137 -9.50E-01 2.23E+00 6.83E+00 U MU 56 451258002 5/14/2018 Fe-59 7.75E+00 1.22E+01 2.38E+01 U MU 56 451258002 5/14/2018 I-131 9.34E+00 1.25E+01 4.34E+01 U MU 56 451258002 5/14/2018 K-40 1.33E+03 1.27E+02 9.24E+01 -192-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) MU 56 451258002 5/14/2018 La-140 2.50E+00 6.84E+00 2.34E+01 U MU 56 451258002 5/14/2018 Mn-54 -1.50E+00 2.21E+00 6.97E+00 U MU 56 451258002 5/14/2018 Nb-95 9.78E-02 2.77E+00 8.81E+00 U MU 56 451258002 5/14/2018 Pb-212 5.66E+00 6.36E+00 1.17E+01 U MU 56 451258002 5/14/2018 Pb-214 1.10E+01 7.75E+00 1.47E+01 U MU 56 451258002 5/14/2018 Ra-226 0.00E+00 8.66E+00 1.41E+01 U MU 56 451258002 5/14/2018 Ru-103 -2.15E+00 2.91E+00 8.88E+00 U MU 56 451258002 5/14/2018 Ru-106 -7.78E+00 2.08E+01 6.49E+01 U MU 56 451258002 5/14/2018 Sb-124 -1.32E+01 5.74E+00 3.60E+00 U MU 56 451258002 5/14/2018 Sb-125 -1.51E+00 5.49E+00 1.78E+01 U MU 56 451258002 5/14/2018 Se-75 5.37E+00 2.93E+00 9.89E+00 U MU 56 451258002 5/14/2018 Th-228 5.66E+00 6.36E+00 1.17E+01 U MU 56 451258002 5/14/2018 Th-230 0.00E+00 8.66E+00 1.41E+01 U MU 56 451258002 5/14/2018 Tl-208 2.93E+00 3.10E+00 8.35E+00 U MU 56 451258002 5/14/2018 Zn-65 -2.37E+00 7.04E+00 1.96E+01 U MU 56 451258002 5/14/2018 Zr-95 -1.30E+00 4.36E+00 1.34E+01 U MU 56 464596002 11/12/2018 Ac-228 6.21E+00 1.40E+01 3.30E+01 U MU 56 464596002 11/12/2018 Ag-108m -1.97E+00 2.14E+00 5.64E+00 U MU 56 464596002 11/12/2018 Ag-110m -1.99E-01 2.94E+00 9.82E+00 U MU 56 464596002 11/12/2018 Ba-140 3.55E+00 1.26E+01 3.78E+01 U MU 56 464596002 11/12/2018 Be-7 3.27E+01 2.26E+01 7.62E+01 U MU 56 464596002 11/12/2018 Bi-214 5.50E+00 8.81E+00 1.87E+01 U MU 56 464596002 11/12/2018 Ce-141 -4.20E+00 3.87E+00 1.13E+01 U MU 56 464596002 11/12/2018 Ce-144 5.13E+00 1.23E+01 4.00E+01 U MU 56 464596002 11/12/2018 Co-57 -5.09E-01 1.59E+00 5.01E+00 U MU 56 464596002 11/12/2018 Co-58 -1.39E+00 2.27E+00 7.21E+00 U MU 56 464596002 11/12/2018 Co-60 -1.89E+00 2.45E+00 7.04E+00 U MU 56 464596002 11/12/2018 Cr-51 -7.75E+00 2.08E+01 6.85E+01 U MU 56 464596002 11/12/2018 Cs-134 2.30E+00 2.21E+00 7.91E+00 U MU 56 464596002 11/12/2018 Cs-137 -7.22E-01 2.41E+00 7.13E+00 U MU 56 464596002 11/12/2018 Fe-59 7.51E+00 4.94E+00 1.77E+01 U MU 56 464596002 11/12/2018 I-131 -2.60E+00 5.18E+00 1.67E+01 U MU 56 464596002 11/12/2018 K-40 1.05E+03 1.04E+02 9.54E+01 MU 56 464596002 11/12/2018 La-140 3.00E+00 3.86E+00 1.38E+01 U MU 56 464596002 11/12/2018 Mn-54 1.30E+00 2.02E+00 7.13E+00 U MU 56 464596002 11/12/2018 Nb-95 1.11E-01 2.05E+00 6.30E+00 U MU 56 464596002 11/12/2018 Pb-212 1.39E+01 7.73E+00 1.53E+01 U MU 56 464596002 11/12/2018 Pb-214 3.46E+00 5.71E+00 1.74E+01 U MU 56 464596002 11/12/2018 Ra-226 5.50E+00 8.81E+00 1.87E+01 U MU 56 464596002 11/12/2018 Ru-103 -2.13E+00 2.26E+00 6.65E+00 U MU 56 464596002 11/12/2018 Ru-106 -1.71E+01 1.72E+01 4.80E+01 U MU 56 464596002 11/12/2018 Sb-124 1.89E-01 4.26E+00 1.45E+01 U MU 56 46459600 2 11/12/2018 Sb-125 -1.02E+01 6.05E+00 1.60E+01 U MU 56 464596002 11/12/2018 Se-75 -2.81E+00 2.74E+00 8.59E+00 U MU 56 464596002 11/12/2018 Th-228 1.39E+01 7.73E+00 1.53E+01 U MU 56 464596002 11/12/2018 Th-230 5.50E+00 8.81E+00 1.87E+01 U MU 56 464596002 11/12/2018 Tl-208 -2.11E-01 2.29E+00 7.20E+00 U MU 56 464596002 11/12/2018 Zn-65 5.26E+00 4.88E+00 1.73E+01 U MU 56 464596002 11/12/2018 Zr-95 5.02E+00 3.96E+00 1.42E+01 U -193-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) MU 59 451254002 5/17/2018 Ac-228 -3.75E+00 1.06E+01 3.49E+01 U MU 59 451254002 5/17/2018 Ag-108m 2.56E+00 1.84E+00 6.37E+00 U MU 59 451254002 5/17/2018 Ag-110m 1.00E+00 3.39E+00 1.17E+01 U MU 59 451254002 5/17/2018 Ba-140 -2.16E+01 2.31E+01 6.78E+01 U MU 59 451254002 5/17/2018 Be-7 9.04E+01 3.60E+01 6.74E+01 MU 59 451254002 5/17/2018 Bi-214 1.55E+01 9.08E+00 2.09E+01 U MU 59 451254002 5/17/2018 Ce-141 -7.60E-02 4.90E+00 1.57E+01 U MU 59 451254002 5/17/2018 Ce-144 8.23E+00 1.31E+01 4.31E+01 U MU 59 451254002 5/17/2018 Co-57 -1.16E-01 1.84E+00 5.92E+00 U MU 59 451254002 5/17/2018 Co-58 -3.74E+00 2.31E+00 5.89E+00 U MU 59 451254002 5/17/2018 Co-60 1.76E+00 1.88E+00 6.91E+00 U MU 59 451254002 5/17/2018 Cr-51 1.16E+01 2.64E+01 9.11E+01 U MU 59 451254002 5/17/2018 Cs-134 4.75E-01 2.61E+00 8.28E+00 U MU 59 451254002 5/17/2018 Cs-137 7.75E-01 2.26E+00 7.49E+00 U MU 59 451254002 5/17/2018 Fe-59 5.99E+00 6.63E+00 2.33E+01 U MU 59 451254002 5/17/2018 I-131 -1.78E+01 1.37E+01 3.86E+01 U MU 59 451254002 5/17/2018 K-40 1.41E+03 1.18E+02 8.25E+01 MU 59 451254002 5/17/2018 La-140 4.55E+00 6.56E+00 2.33E+01 U MU 59 451254002 5/17/2018 Mn-54 -3.57E+00 1.96E+00 4.60E+00 U MU 59 451254002 5/17/2018 Nb-95 -3.86E+00 2.91E+00 7.53E+00 U MU 59 451254002 5/17/2018 Pb-212 9.14E+00 7.19E+00 1.50E+01 U MU 59 451254002 5/17/2018 Pb-214 9.28E+00 8.47E+00 2.17E+01 U MU 59 451254002 5/17/2018 Ra-226 1.55E+01 9.08E+00 2.09E+01 U MU 59 451254002 5/17/2018 Ru-103 1.42E+00 2.86E+00 9.68E+00 U MU 59 451254002 5/17/2018 Ru-106 -3.28E+01 2.07E+01 5.14E+01 U MU 59 451254002 5/17/2018 Sb-124 1.08E+01 6.63E+00 2.49E+01 U MU 59 451254002 5/17/2018 Sb-125 -4.15E+00 5.61E+00 1.74E+01 U MU 59 451254002 5/17/2018 Se-75 4.11E-01 2.82E+00 9.71E+00 U MU 59 451254002 5/17/2018 Th-228 9.14E+00 7.19E+00 1.50E+01 U MU 59 451254002 5/17/2018 Th-230 1.55E+01 9.08E+00 2.09E+01 U MU 59 451254002 5/17/2018 Tl-208 3.85E+00 2.81E+00 8.81E+00 U MU 59 451254002 5/17/2018 Zn-65 -1.47E+00 5.85E+00 1.89E+01 U MU 59 451254002 5/17/2018 Zr-95 2.57E+00 4.63E+00 1.55E+01 U MU 59 464611002 11/13/2018 Ac-228 8.28E+00 1.12E+01 3.59E+01 U MU 59 464611002 11/13/2018 Ag-108m 3.56E+00 1.92E+00 6.67E+00 U MU 59 464611002 11/13/2018 Ag-110m 1.33E+00 3.16E+00 1.11E+01 U MU 59 464611002 11/13/2018 Ba-140 -1.32E+01 1.27E+01 3.65E+01 U MU 59 464611002 11/13/2018 Be-7 1.03E+02 3.58E+01 1.06E+02 U MU 59 464611002 11/13/2018 Bi-214 2.23E+01 1.22E+01 2.34E+01 U MU 59 464611002 11/13/2018 Ce-141 -3.64E+00 3.83E+00 1.16E+01 U MU 59 464611002 11/13/2018 Ce-144 4.83E+00 1.22E+01 4.08E+01 U MU 59 464611002 11/13/2018 Co-57 3.71E+00 1.24E+00 5.16E+00 U MU 59 464611002 11/13/2018 Co-58 -3.20E+00 2.43E+00 6.04E+00 U MU 59 464611002 11/13/2018 Co-60 2.58E+00 2.48E+00 9.03E+00 U MU 59 464611002 11/13/2018 Cr-51 -8.67E+00 1.82E+01 6.01E+01 U MU 59 46 4611002 11/13/2018 Cs-134 4.05E+00 4.31E+00 9.43E+00 U MU 59 464611002 11/13/2018 Cs-137 -4.57E+00 2.55E+00 5.88E+00 U MU 59 464611002 11/13/2018 Fe-59 5.71E-01 7.00E+00 2.35E+01 U MU 59 464611002 11/13/2018 I-131 1.50E+00 5.02E+00 1.73E+01 U MU 59 464611002 11/13/2018 K-40 1.45E+03 1.38E+02 9.47E+01 -194-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) MU 59 464611002 11/13/2018 La-140 -4.39E+00 6.09E+00 1.74E+01 U MU 59 464611002 11/13/2018 Mn-54 -3.70E+00 2.78E+00 6.65E+00 U MU 59 464611002 11/13/2018 Nb-95 2.47E+00 2.36E+00 8.18E+00 U MU 59 464611002 11/13/2018 Pb-212 -1.67E+00 5.16E+00 1.50E+01 U MU 59 464611002 11/13/2018 Pb-214 3.03E+00 5.40E+00 1.82E+01 U MU 59 464611002 11/13/2018 Ra-226 2.23E+01 1.22E+01 2.34E+01 U MU 59 464611002 11/13/2018 Ru-103 1.07E+00 2.15E+00 7.40E+00 U MU 59 464611002 11/13/2018 Ru-106 3.11E+01 2.50E+01 8.56E+01 U MU 59 464611002 11/13/2018 Sb-124 1.61E+00 6.92E+00 2.30E+01 U MU 59 464611002 11/13/2018 Sb-125 -1.58E+00 5.38E+00 1.76E+01 U MU 59 464611002 11/13/2018 Se-75 -2.76E+00 2.84E+00 8.02E+00 U MU 59 464611002 11/13/2018 Th-228 -1.67E+00 5.16E+00 1.50E+01 U MU 59 464611002 11/13/2018 Th-230 2.23E+01 1.22E+01 2.34E+01 U MU 59 464611002 11/13/2018 Tl-208 3.66E+00 3.00E+00 9.75E+00 U MU 59 464611002 11/13/2018 Zn-65 -3.52E+00 5.35E+00 1.63E+01 U MU 59 464611002 11/13/2018 Zr-95 2.80E+00 4.42E+00 1.50E+01 U MS 06 451258004 5/14/2018 Sr-89 1.04E+01 2.12E+01 6.24E+01 U MS 06 451258004 5/14/2018 Sr-90 -2.34E+00 5.66E+00 1.88E+01 U MS 06 464596004 11/12/2018 Sr-89 -1.28E+02 4.39E+01 1.43E+02 U MS 06 464596004 11/12/2018 Sr-90 -4.51E+01 2.70E+01 1.03E+02 U MS 56 451258005 5/14/2018 Sr-89 -2.08E+01 2.02E+01 6.78E+01 U MS 56 451258005 5/14/2018 Sr-90 -1.77E+01 6.38E+00 2.26E+01 U MS 56 464596005 11/12/2018 Sr-89 -6.35E+01 4.83E+01 9.42E+01 U MS 56 464596005 11/12/2018 Sr-90 7.55E+01 4.22E+01 1.23E+02 U -195-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) SE 02 451279001 5/14/2018 Ac-228 1.54E+03 1.60E+02 1.72E+02 SE 02 451279001 5/14/2018 Ag-108m -1.50E+01 1.01E+01 3.05E+01 U SE 02 451279001 5/14/2018 Ag-110m 0.00E+00 3.34E+01 6.83E+01 U SE 02 451279001 5/14/2018 Ba-140 3.56E+02 2.81E+02 9.77E+02 U SE 02 451279001 5/14/2018 Be-7 7.46E+01 1.42E+02 5.02E+02 U SE 02 451279001 5/14/2018 Bi-214 6.95E+02 8.10E+01 9.12E+01 SE 02 451279001 5/14/2018 Ce-141 -1.70E+01 2.79E+01 9.80E+01 U SE 02 451279001 5/14/2018 Ce-144 3.69E+00 6.74E+01 2.29E+02 U SE 02 451279001 5/14/2018 Co-57 1.30E+01 8.98E+00 3.26E+01 U SE 02 451279001 5/14/2018 Co-58 4.05E+01 1.92E+01 6.26E+01 U SE 02 451279001 5/14/2018 Co-60 -2.52E+01 1.50E+01 3.99E+01 U SE 02 451279001 5/14/2018 Cr-51 -6.31E+01 1.79E+02 6.42E+02 U SE 02 451279001 5/14/2018 Cs-134 0.00E+00 3.37E+01 6.03E+01 U SE 02 451279001 5/14/2018 Cs-137 -4.83E+00 1.20E+01 4.18E+01 U SE 02 451279001 5/14/2018 Fe-59 7.61E+01 4.87E+01 1.67E+02 U SE 02 451279001 5/14/2018 I-131 -2.50E+02 2.02E+02 6.42E+02 U SE 02 451279001 5/14/2018 K-40 1.38E+04 1.00E+03 3.05E+02 SE 02 451279001 5/14/2018 La-140 -8.05E+00 7.66E+01 2.52E+02 U SE 02 451279001 5/14/2018 Mn-54 1.18E+01 1.35E+01 4.80E+01 U SE 02 451279001 5/14/2018 Nb-95 3.46E+01 1.97E+01 6.33E+01 U SE 02 451279001 5/14/2018 Pb-212 1.26E+03 7.70E+0 1 6.34E+01 SE 02 451279001 5/14/2018 Pb-214 0.00E+00 8.79E+01 2.14E+02 U SE 02 451279001 5/14/2018 Ra-226 6.95E+02 8.10E+01 9.12E+01 SE 02 451279001 5/14/2018 Ru-103 1.48E+01 1.83E+01 6.48E+01 U SE 02 451279001 5/14/2018 Ru-106 8.52E+01 1.06E+02 3.67E+02 U SE 02 451279001 5/14/2018 Sb-124 -4.62E+01 3.95E+01 1.06E+02 U SE 02 451279001 5/14/2018 Sb-125 -3.81E+01 2.91E+01 9.06E+01 U SE 02 451279001 5/14/2018 Se-75 1.41E+01 1.55E+01 5.80E+01 U SE 02 451279001 5/14/2018 Th-228 1.26E+03 7.70E+01 6.34E+01 SE 02 451279001 5/14/2018 Th-230 6.95E+02 8.10E+01 9.12E+01 SE 02 451279001 5/14/2018 Tl-208 3.08E+02 3.43E+01 3.99E+01 SE 02 451279001 5/14/2018 Zn-65 3.52E+01 3.47E+01 1.08E+02 U SE 02 451279001 5/14/2018 Zr-95 1.98E+01 2.94E+01 1.05E+02 U SE 02 464618001 11/12/2018 Ac-228 1.51E+03 1.72E+02 2.02E+02 SE 02 464618001 11/12/2018 Ag-108m -2.24E-01 1.31E+01 4.60E+01 U SE 02 464618001 11/12/2018 Ag-110m -2.99E+01 2.15E+01 6.04E+01 U SE 02 464618001 11/12/2018 Ba-140 -9.42E+01 2.35E+02 7.98E+02 U SE 02 464618001 11/12/2018 Be-7 -7.17E+01 1.84E+02 6.32E+02 U SE 02 464618001 11/12/2018 Bi-214 1.28E+03 1.01E+02 8.76E+01 SE 02 464618001 11/12/2018 Ce-141 5.13E+01 4.57E+01 1.59E+02 U SE 02 464618001 11/12/2018 Ce-144 7.63E+01 1.13E+02 4.00E+02 U SE 02 464618001 11/12/2018 Co-57 -2.98E+00 1.42E+01 4.98E+01 U SE 02 464618001 11/12/2018 Co-58 -2.00E+00 1.85E+01 6.18E+01 U SE 02 464618001 11/12/2018 Co-60 1.16E+01 1.59E+01 5.68E+01 U SE 02 464618001 11/12/2018 Cr-51 -5.00E+01 2.70E+02 8.97E+02 U SE 02 464618001 11/12/2018 Cs-134 0.00E+00 3.44E+01 8.22E+01 U SE 02 464618001 11/12/2018 Cs-137 1.29E-01 1.75E+01 5.99E+01 U SE 02 464618001 11/12/2018 Fe-59 5.14E+01 4.95E+01 1.69E+02 U SE 02 464618001 11/12/2018 I-131 -3.75E+01 1.71E+02 5.85E+02 U S E 02 464618001 11/12/2018 K-40 1.36E+04 1.08E+03 5.05E+02 -196-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) SE 02 464618001 11/12/2018 La-140 1.18E+02 8.44E+01 2.80E+02 U SE 02 464618001 11/12/2018 Mn-54 4.53E+01 2.18E+01 7.13E+01 U SE 02 464618001 11/12/2018 Nb-95 1.81E+01 2.35E+01 7.86E+01 U SE 02 464618001 11/12/2018 Pb-212 1.99E+03 1.24E+02 9.81E+01 SE 02 464618001 11/12/2018 Pb-214 1.48E+03 1.22E+02 1.12E+02 SE 02 464618001 11/12/2018 Ra-226 1.28E+03 1.01E+02 8.76E+01 SE 02 464618001 11/12/2018 Ru-103 2.51E+01 2.33E+01 8.23E+01 U SE 02 464618001 11/12/2018 Ru-106 1.48E+02 1.55E+02 5.44E+02 U SE 02 464618001 11/12/2018 Sb-124 -6.15E-01 3.67E+01 1.23E+02 U SE 02 464618001 11/12/2018 Sb-125 -2.71E+01 4.30E+01 1.46E+02 U SE 02 464618001 11/12/2018 Se-75 -2.27E+00 2.63E+01 8.41E+01 U SE 02 464618001 11/12/2018 Th-228 1.99E+03 1.24E+02 9.81E+01 SE 02 464618001 11/12/2018 Th-230 1.28E+03 1.01E+02 8.76E+01 SE 02 464618001 11/12/2018 Tl-208 5.52E+02 4.87E+01 4.49E+01 SE 02 464618001 11/12/2018 Zn-65 8.21E+01 3.70E+01 1.08E+02 U SE 02 464618001 11/12/2018 Zr-95 1.27E+02 5.18E+01 1.63E+02 U SE 07 451263001 5/16/2018 Ac-228 2.98E+02 1.25E+02 3.09E+02 U SE 07 451263001 5/16/2018 Ag-108m -1.29E+00 9.41E+00 3.30E+01 U SE 07 451263001 5/16/2018 Ag-110m -4.05E+01 2.17E+01 5.26E+01 U SE 07 451263001 5/16/2018 Ba-140 1.79E+02 2.36E+02 8.56E+02 U SE 07 451263001 5/16/2018 Be-7 1.03E+02 1.26E+02 4.65E+02 U SE 07 451263001 5/16/2018 Bi-214 2.25E+02 5.95E+01 8.03E+01 SE 07 451263001 5/16/2018 Ce-141 -7.31E+01 3.66E+01 1.04E+02 U SE 07 451263001 5/16/2018 Ce-144 -2.95E+01 6.93E+01 2.42E+02 U SE 07 451263001 5/16/2018 Co-57 -7.12E+00 8.28E+00 2.79E+01 U SE 07 451263001 5/16/2018 Co-58 -5.95E-02 1.59E+01 5.64E+01 U SE 07 451263001 5/16/2018 Co-60 -5.36E+00 1.40E+01 4.41E+01 U SE 07 451263001 5/16/2018 Cr-51 -9.39E+01 1.90E+02 6.70E+02 U SE 07 451263001 5/16/2018 Cs-134 4.87E+01 1.96E+01 6.63E+01 U SE 07 451263001 5/16/2018 Cs-137 -1.53E+01 1.45E+01 3.60E+01 U SE 07 451263001 5/16/2018 Fe-59 -2.12E+01 5.11E+01 1.68E+02 U SE 07 451263001 5/16/2018 I-131 4.03E+00 1.83E+02 6.60E+02 U SE 07 451263001 5/16/2018 K-40 1.96E+04 1.38E+03 2.47E+02 SE 07 451263001 5/16/2018 La-140 8.53E+01 8.44E+01 3.12E+02 U SE 07 451263001 5/16/2018 Mn-54 -6.80E+00 1.34E+01 4.49E+01 U SE 07 451263001 5/16/2018 Nb-95 -1.94E+00 1.89E+01 6.23E+01 U SE 07 451263001 5/16/2018 Pb-212 3.74E+02 5.09E+01 6.55E+01 SE 07 451263001 5/16/2018 Pb-214 1.92E+02 6.77E+01 9.40E+01 SE 07 451263001 5/16/2018 Ra-226 2.25E+02 5.95E+01 8.03E+01 SE 07 451263001 5/16/2018 Ru-103 -2.58E+01 1.88E+01 5.44E+01 U SE 07 451263001 5/16/2018 Ru-106 7.14E+01 1.27E+02 4.48E+02 U SE 07 451263001 5/16/2018 Sb-124 -3.15E+00 2.77E+01 8.68E+01 U SE 07 451263001 5/16/2018 Sb-125 2.99E+01 3.33E+01 1.23E+02 U SE 07 451263001 5/16/2018 S e-75 6.71E+00 1.53E+01 5.80E+01 U SE 07 451263001 5/16/2018 Th-228 3.74E+02 5.09E+01 6.55E+01 SE 07 451263001 5/16/2018 Th-230 2.25E+02 5.95E+01 8.03E+01 SE 07 451263001 5/16/2018 Tl-208 9.65E+01 4.26E+01 4.00E+01 SE 07 451263001 5/16/2018 Zn-65 3.51E+01 4.05E+01 1.32E+02 U SE 07 451263001 5/16/2018 Zr-95 5.40E+01 2.89E+01 1.06E+02 U -197-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) SE 07 464624001 11/13/2018 Ac-228 3.44E+02 7.44E+01 1.12E+02 SE 07 464624001 11/13/2018 Ag-108m -1.88E-01 7.61E+00 2.65E+01 U SE 07 464624001 11/13/2018 Ag-110m -1.96E+00 1.33E+01 4.55E+01 U SE 07 464624001 11/13/2018 Ba-140 1.26E+02 1.37E+02 4.81E+02 U SE 07 464624001 11/13/2018 Be-7 -4.11E+01 9.75E+01 3.27E+02 U SE 07 464624001 11/13/2018 Bi-214 2.45E+02 5.05E+01 6.29E+01 SE 07 464624001 11/13/2018 Ce-141 -2.50E+01 2.27E+01 7.20E+01 U SE 07 464624001 11/13/2018 Ce-144 -1.55E+01 5.05E+01 1.75E+02 U SE 07 464624001 11/13/2018 Co-57 -3.73E+00 6.49E+00 2.22E+01 U SE 07 464624001 11/13/2018 Co-58 3.98E+00 1.17E+01 4.15E+01 U SE 07 464624001 11/13/2018 Co-60 6.35E+00 1.24E+01 4.24E+01 U SE 07 464624001 11/13/2018 Cr-51 7.60E+01 1.41E+02 4.66E+02 U SE 07 464624001 11/13/2018 Cs-134 1.22E+01 1.18E+01 3.88E+01 U SE 07 464624001 11/13/2018 Cs-137 1.18E+01 1.01E+01 3.51E+01 U SE 07 464624001 11/13/2018 Fe-59 -4.71E+01 3.49E+01 1.01E+02 U SE 07 464624001 11/13/2018 I-131 -1.71E+02 8.99E+01 2.54E+02 U SE 07 464624001 11/13/2018 K-40 2.01E+04 1.27E+03 3.12E+02 SE 07 464624001 11/13/2018 La-140 -5.60E+01 5.36E+01 1.47E+02 U SE 07 464624001 11/13/2018 Mn-54 1.34E+01 1.17E+01 4.19E+01 U SE 07 464624001 11/13/2018 Nb-95 -2.15E+01 1.33E+01 3.88E+01 U SE 07 464624001 11/13/2018 Pb-212 3.25E+02 5.34E+01 5.91E+01 SE 07 464624001 11/13/2018 Pb-214 2.57E+02 5.34E+01 6.63E+01 SE 07 464624001 11/13/2018 Ra-226 2.45E+02 5.05E+01 6.29E+01 SE 07 464624001 11/13/2018 Ru-103 -3.89E+01 1.57E+01 3.49E+01 U SE 07 464624001 11/13/2018 Ru-106 5.11E+01 9.02E+01 3.11E+02 U SE 07 464624001 11/13/2018 Sb-124 3.41E+00 2.24E+01 7.77E+01 U SE 07 464624001 11/13/2018 Sb-125 -1.35E+01 2.58E+01 8.72E+01 U SE 07 464624001 11/13/2018 Se-75 -1.05E+01 1.19E+01 4.10E+01 U SE 07 464624001 11/13/2018 Th-228 3.25E+02 5.34E+01 5.91E+01 SE 07 464624001 11/13/2018 Th-230 2.45E+02 5.05E+01 6.29E+01 SE 07 464624001 11/13/2018 Tl-208 1.02E+02 1.88E+01 3.64E+01 SE 07 464624001 11/13/2018 Zn-65 -3.09E+01 4.74E+01 8.95E+01 U SE 07 464624001 11/13/2018 Zr-95 1.98E+01 2.92E+01 7.24E+01 U SE 08 451263002 5/16/2018 Ac-228 3.27E+02 9.60E+01 1.52E+02 SE 08 451263002 5/16/2018 Ag-108m 8.46E+00 8.01E+00 2.93E+01 U SE 08 451263002 5/16/2018 Ag-110m 2.30E+01 1.55E+01 5.36E+01 U SE 08 451263002 5/16/2018 Ba-140 -1.25E+02 1.84E+02 6.10E+02 U SE 08 451263002 5/16/2018 Be-7 -3.51E+01 9.19E+01 3.17E+02 U SE 08 451263002 5/16/2018 Bi-214 3.05E+02 6.29E+01 7.01E+01 SE 08 451263002 5/16/2018 Ce-141 -6.16E+00 2.41E+01 8.58E+01 U SE 08 451263002 5/16/2018 Ce-144 -7.17E+00 5.08E+01 1.83E+02 U SE 08 451263002 5/16/2018 Co-57 -1.36E+01 7.17E+00 2.15E+01 U SE 08 451263002 5/16/2018 Co-58 2.88E+01 1.65E+01 5.59E+01 U SE 08 451263002 5/16/2018 Co-60 -7.35E+00 1.03E+01 3.21E+01 U SE 08 451263002 5/16/2018 Cr-51 -1.32E+02 1.50E+02 5.23E+02 U SE 08 451263002 5/16/2018 Cs-134 2.08E+01 1.35E+01 4.64E+01 U SE 08 451263002 5/16/2018 Cs-137 1.66E+01 1.07E+01 3.76E+01 U SE 08 451263002 5/16/2018 Fe-59 2.12E+00 3.65E+01 1.27E+02 U SE 08 451263002 5/16/2018 I-131 1.21E+02 1.45E+02 5.39E+02 U SE 08 451263002 5/16/2018 K-40 2.66E+04 1.59E+03 2.53E+02 -198-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) SE 08 451263002 5/16/2018 La-140 -7.33E+01 5.59E+01 1.41E+02 U SE 08 451263002 5/16/2018 Mn-54 1.61E+01 2.37E+01 3.90E+01 U SE 08 451263002 5/16/2018 Nb-95 -1.07E+00 1.59E+01 4.73E+01 U SE 08 451263002 5/16/2018 Pb-212 4.41E+02 4.18E+01 4.96E+01 SE 08 451263002 5/16/2018 Pb-214 4.01E+02 5.98E+01 5.59E+01 SE 08 451263002 5/16/2018 Ra-226 3.05E+02 6.29E+01 7.01E+01 SE 08 451263002 5/16/2018 Ru-103 7.50E+00 1.48E+01 5.35E+01 U SE 08 451263002 5/16/2018 Ru-106 4.19E+01 9.03E+01 3.18E+02 U SE 08 451263002 5/16/2018 Sb-124 -2.12E+01 1.96E+01 4.71E+01 U SE 08 451263002 5/16/2018 Sb-125 -5.81E+00 2.23E+01 7.90E+01 U SE 08 451263002 5/16/2018 Se-75 -1.66E+00 1.22E+01 4.11E+01 U SE 08 451263002 5/16/2018 Th-228 4.41E+02 4.18E+01 4.96E+01 SE 08 451263002 5/16/2018 Th-230 3.05E+02 6.29E+01 7.01E+01 SE 08 451263002 5/16/2018 Tl-208 1.18E+02 2.72E+01 3.26E+01 SE 08 451263002 5/16/2018 Zn-65 -1.69E+00 3.12E+01 9.47E+01 U SE 08 451263002 5/16/2018 Zr-95 3.47E+01 2.62E+01 8.46E+01 U SE 08 464624002 11/13/2018 Ac-228 4.18E+02 1.12E+02 1.55E+0 2 SE 08 464624002 11/13/2018 Ag-108m -1.08E+01 1.02E+01 2.94E+01 U SE 08 464624002 11/13/2018 Ag-110m 8.85E+00 1.78E+01 6.20E+01 U SE 08 464624002 11/13/2018 Ba-140 -2.81E+02 1.86E+02 5.23E+02 U SE 08 464624002 11/13/2018 Be-7 -1.54E+02 1.30E+02 3.90E+02 U SE 08 464624002 11/13/2018 Bi-214 2.80E+02 5.77E+01 7.35E+01 SE 08 464624002 11/13/2018 Ce-141 -2.21E+01 2.29E+01 7.87E+01 U SE 08 464624002 11/13/2018 Ce-144 -4.47E+01 5.33E+01 1.86E+02 U SE 08 464624002 11/13/2018 Co-57 1.52E-01 7.48E+00 2.75E+01 U SE 08 464624002 11/13/2018 Co-58 -7.56E+00 1.51E+01 5.02E+01 U SE 08 464624002 11/13/2018 Co-60 2.45E+00 1.41E+01 4.68E+01 U SE 08 464624002 11/13/2018 Cr-51 -4.27E+01 1.57E+02 5.34E+02 U SE 08 464624002 11/13/2018 Cs-134 3.89E+01 1.62E+01 5.29E+01 U SE 08 464624002 11/13/2018 Cs-137 2.20E+01 1.33E+01 4.42E+01 U SE 08 464624002 11/13/2018 Fe-59 -2.81E+01 3.44E+01 1.06E+02 U SE 08 464624002 11/13/2018 I-131 -1.86E+02 1.08E+02 2.86E+02 U SE 08 464624002 11/13/2018 K-40 2.06E+04 1.22E+03 3.66E+02 SE 08 464624002 11/13/2018 La-140 -8.73E+01 6.41E+01 1.65E+02 U SE 08 464624002 11/13/2018 Mn-54 2.35E+01 1.41E+01 4.85E+01 U SE 08 464624002 11/13/2018 Nb-95 -5.17E+00 1.57E+01 5.32E+01 U SE 08 464624002 11/13/2018 Pb-212 4.25E+02 4.31E+01 5.64E+01 SE 08 464624002 11/13/2018 Pb-214 2.69E+02 6.09E+01 1.33E+02 SE 08 464624002 11/13/2018 Ra-226 2.80E+02 5.77E+01 7.35E+01 SE 08 464624002 11/13/2018 Ru-103 7.33E+00 1.56E+01 5.32E+01 U SE 08 464624002 11/13/2018 Ru-106 3.12E+02 7.66E+01 3.30E+02 U SE 08 464624002 11/13/2018 Sb-124 5.00E+01 3.39E+01 1.21E+02 U SE 08 464624002 11/13/2018 Sb-125 6.25E+00 2.82E+01 9.63E+01 U SE 08 464624002 11/13/2018 Se-75 2.45E+00 1.40E+01 4.94E+01 U SE 08 464624002 11/13/2018 Th-228 4.25E+02 4.31E+01 5.64E+01 SE 08 464624002 11/13/2018 Th-230 2.80E+02 5.77E+01 7.35E+01 SE 08 464624002 11/13/2018 Tl-208 9.20E+01 2.48E+01 4.07E+01 SE 08 464624002 11/13/2018 Zn-65 -8.30E+01 4.42E+01 1.05E+02 U SE 08 464624002 11/13/2018 Zr-95 7.34E+00 2.78E+01 9.73E+01 U -199-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) SE 52 451279002 5/14/2018 Ac-228 2.77E+03 2.52E+02 1.81E+02 SE 52 451279002 5/14/2018 Ag-108m -9.58E+00 1.31E+01 4.33E+01 U SE 52 451279002 5/14/2018 Ag-110m 2.94E+01 2.49E+01 8.75E+01 U SE 52 451279002 5/14/2018 Ba-140 -2.45E+02 3.65E+02 1.18E+03 U SE 52 451279002 5/14/2018 Be-7 0.00E+00 4.47E+02 7.09E+02 U SE 52 451279002 5/14/2018 Bi-214 1.90E+03 1.39E+02 1.06E+02 SE 52 451279002 5/14/2018 Ce-141 0.00E+00 1.37E+02 1.57E+02 U SE 52 451279002 5/14/2018 Ce-144 -5.27E+01 1.16E+02 3.64E+02 U SE 52 451279002 5/14/2018 Co-57 7.41E+00 1.32E+01 4.66E+01 U SE 52 451279002 5/14/2018 Co-58 -2.18E+01 2.45E+01 6.87E+01 U SE 52 451279002 5/14/2018 Co-60 7.15E+00 1.59E+01 5.39E+01 U SE 52 451279002 5/14/2018 Cr-51 -3.67E+02 2.92E+02 9.59E+02 U SE 52 451279002 5/14/2018 Cs-134 9.23E+01 4.09E+01 9.28E+01 U SE 52 451279002 5/14/2018 Cs-137 -1.43E+01 1.89E+01 5.59E+01 U SE 52 451279002 5/14/2018 Fe-59 -3.25E+01 4.43E+01 1.38E+02 U SE 52 451279002 5/14/2018 I-131 2.27E+02 2.82E+02 1.01E+03 U SE 52 451279002 5/14/2018 K-40 1.21E+04 9.66E+02 5.18E+02 SE 52 451279002 5/14/2018 La-140 4.20E+01 1.17E+02 3.59E+02 U SE 52 451279002 5/14/2018 Mn-54 3.39E+01 1.84E+01 6.30E+01 U SE 52 451279002 5/14/2018 Nb-95 3.36E+00 2.85E+01 8.86E+01 U SE 52 451279002 5/14/2018 Pb-212 3.32E+03 1.74E+02 1.02E+02 SE 52 451279002 5/14/2018 Pb-214 2.40E+03 1.65E+02 1.17E+02 SE 52 451279002 5/14/2018 Ra-226 1.90E+03 1.39E+02 1.06E+02 SE 52 451279002 5/14/2018 Ru-103 -3.14E+01 2.62E+01 8.10E+01 U SE 52 451279002 5/14/2018 Ru-106 2.03E+02 1.55E+02 5.24E+02 U SE 52 451279002 5/14/2018 Sb-124 0.00E+00 0.00E+00 1.35E+02 U SE 52 451279002 5/14/2018 Sb-125 1.78E+01 4.33E+01 1.52E+02 U SE 52 451279002 5/14/2018 Se-75 -2.01E+01 2.36E+01 8.24E+01 U SE 52 451279002 5/14/2018 Th-228 3.32E+03 1.74E+02 1.02E+02 SE 52 451279002 5/14/2018 Th-230 1.90E+03 1.39E+02 1.06E+02 SE 52 451279002 5/14/2018 Tl-208 8.42E+02 6.84E+01 5.72E+01 SE 52 451279002 5/14/2018 Zn-65 -3.74E+01 4.83E+01 1.30E+02 U SE 52 451279002 5/14/2018 Zr-95 3.00E+01 4.05E+01 1.45E+02 U SE 52 464618002 11/12/2018 Ac-228 2.82E+03 2.26E+02 1.27E+02 SE 52 464618002 11/12/2018 Ag-108m 4.92E+00 9.55E+00 3.50E+01 U SE 52 464618002 11/12/2018 Ag-110m -2.22E+01 1.97E+01 5.64E+01 U SE 52 464618002 11/12/2018 Ba-140 3.23E+02 1.97E+02 6.80E+02 U SE 52 464618002 11/12/2018 Be-7 -1.15E+02 1.20E+02 4.02E+02 U SE 52 464618002 11/12/2018 Bi-214 1.58E+03 1.06E+02 8.22E+01 SE 52 464618002 11/12/2018 Ce-141 -4.57E+00 2.84E+01 1.02E+02 U SE 52 464618002 11/12/2018 Ce-144 -8.33E+01 6.81E+01 2.33E+02 U SE 52 464618002 11/12/2018 Co-57 6.07E+00 8.17E+00 2.99E+01 U SE 52 464618002 11/12/2018 Co-58 -2.91E+01 1.80E+01 4.92E+01 U SE 52 464618002 11/12/2018 Co-60 1.00E+00 1.39E+01 4.76E+01 U SE 52 464618002 11/12/2018 Cr-51 7.62E+01 1.74E+02 5.93E+02 U SE 52 464618002 11/12/2018 Cs-134 0.00E+00 4.09E+01 6.67E+01 U SE 52 464618002 11/12/2018 Cs-137 1.23E+00 1.52E+01 4.72E+01 U SE 52 464618002 11/12/2018 Fe-59 -9.18E+01 4.13E+01 1.02E+02 U SE 52 464618002 11/12/2018 I-131 -5.28E+01 1.12E+02 4.01E+02 U SE 52 464618002 11/12/2018 K-40 1.31E+04 8.86E+02 3.75E+02 -200-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) SE 52 464618002 11/12/2018 La-140 1.35E+02 7.34E+01 2.05E+02 U SE 52 464618002 11/12/2018 Mn-54 3.83E+01 2.89E+01 4.51E+01 U SE 52 464618002 11/12/2018 Nb-95 1.74E+01 1.83E+01 5.75E+01 U SE 52 464618002 11/12/2018 Pb-212 3.10E+03 2.23E+02 6.61E+01 SE 52 464618002 11/12/2018 Pb-214 2.12E+03 1.23E+02 7.88E+01 SE 52 464618002 11/12/2018 Ra-226 1.58E+03 1.06E+02 8.22E+01 SE 52 464618002 11/12/2018 Ru-103 4.57E+00 1.66E+01 5.96E+01 U SE 52 464618002 11/12/2018 Ru-106 1.67E+02 1.13E+02 3.96E+02 U SE 52 464618002 11/12/2018 Sb-124 -3.07E+01 2.91E+01 7.88E+01 U SE 52 464618002 11/12/2018 Sb-125 -5.97E+01 3.28E+01 9.94E+01 U SE 52 464618002 11/12/2018 Se-75 8.98E+00 1.63E+01 5.61E+01 U SE 52 464618002 11/12/2018 Th-228 3.10E+03 2.23E+02 6.61E+01 SE 52 464618002 11/12/2018 Th-230 1.58E+03 1.06E+02 8.22E+01 SE 52 464618002 11/12/2018 Tl-208 8.27E+02 5.66E+01 4.14E+01 SE 52 464618002 11/12/2018 Zn-65 -2.29E+01 3.01E+01 8.43E+01 U SE 52 464618002 11/12/2018 Zr-95 6.05E-01 3.54E+01 1.08E+02 U SE 57 451263003 5/17/2018 Ac-228 3.10E+02 1.02E+02 1.25E+02 SE 57 451263003 5/17/2018 Ag-108m -1.02E+01 7.92E+00 2.46E+01 U SE 57 451263003 5/17/2018 Ag-110m 1.18E+00 1.36E+01 4.75E+01 U SE 57 451263003 5/17/2018 Ba-140 2.13E+02 1.54E+02 5.47E+02 U SE 57 451263003 5/17/2018 Be-7 -1.99E+02 1.01E+02 2.68E+02 U SE 57 451263003 5/17/2018 Bi-214 1.99E+02 5.11E+01 5.88E+01 SE 57 451263003 5/17/2018 Ce-141 3.68E+01 2.22E+01 7.20E+01 U SE 57 451263003 5/17/2018 Ce-144 -6.94E+01 5.07E+01 1.60E+02 U SE 57 451263003 5/17/2018 Co-57 -8.45E+00 6.12E+00 1.95E+01 U SE 57 451263003 5/17/2018 Co-58 -2.09E+00 1.11E+01 3.84E+01 U SE 57 451263003 5/17/2018 Co-60 -9.60E+00 1.13E+01 3.39E+01 U SE 57 451263003 5/17/2018 Cr-51 0.00E+00 2.13E+02 4.18E+02 U SE 57 451263003 5/17/2018 Cs-134 3.12E+01 1.29E+01 4.31E+01 U SE 57 451263003 5/17/2018 Cs-137 8.28E+00 1.02E+01 3.53E+01 U SE 57 451263003 5/17/2018 Fe-59 4.08E+01 3.36E+01 1.18E+02 U SE 57 451263003 5/17/2018 I-131 -2.80E+01 1.20E+02 4.22E+02 U SE 57 451263003 5/17/2018 K-40 1.56E+04 9.29E+02 1.89E+02 SE 57 451263003 5/17/2018 La-140 -1.01E+01 5.04E+01 1.68E+02 U SE 57 451263003 5/17/2018 Mn-54 1.37E+00 9.44E+00 3.33E+01 U SE 57 451263003 5/17/2018 Nb-95 -1.13E+01 1.39E+01 4.61E+01 U SE 57 451263003 5/17/2018 Pb-212 3.42E+02 3.46E+01 4.09E+01 SE 57 451263003 5/17/2018 Pb-214 2.76E+02 4.13E+01 6.11E+01 SE 57 451263003 5/17/2018 Ra-226 1.99E+02 5.11E+01 5.88E+01 SE 57 451263003 5/17/2018 Ru-103 2.16E+01 2.33E+01 4.88E+01 U SE 57 451263003 5/17/2018 Ru-106 1.88E+01 8.27E+01 2.82E+02 U SE 57 451263003 5/17/2018 Sb-124 3.96E+00 1.94E+01 6.76E+01 U SE 57 451263003 5/17/2018 Sb-125 -1.01E+01 2.47E+01 7.91E+01 U SE 57 451263003 5/17/2018 Se-75 -1.21E+01 1.28E+01 4.20E+01 U SE 57 451263003 5/17/2018 Th-228 3.42E+02 3.46E+01 4.09E+01 SE 57 451263003 5/17/2018 Th-230 1.99E+02 5.11E+01 5.88E+01 SE 57 451263003 5/17/2018 Tl-208 8.45E+01 2.51E+01 2.94E+01 SE 57 451263003 5/17/2018 Zn-65 -1.34E+01 3.08E+01 8.75E+01 U SE 57 451263003 5/17/2018 Zr-95 1.67E+01 2.21E+01 8.00E+01 U -201-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) SE 57 464624003 11/14/2018 Ac-228 5.31E+02 1.57E+02 1.85E+02 SE 57 464624003 11/14/2018 Ag-108m 1.04E+01 1.30E+01 4.66E+01 U SE 57 464624003 11/14/2018 Ag-110m -1.47E+01 2.00E+01 5.89E+01 U SE 57 464624003 11/14/2018 Ba-140 -2.55E+02 1.89E+02 5.54E+02 U SE 57 464624003 11/14/2018 Be-7 0.00E+00 6.13E+02 4.94E+02 U SE 57 464624003 11/14/2018 Bi-214 4.37E+02 7.90E+01 9.87E+01 SE 57 464624003 11/14/2018 Ce-141 -2.65E+01 2.99E+01 8.87E+01 U SE 57 464624003 11/14/2018 Ce-144 8.59E+01 1.12E+02 2.31E+02 U SE 57 464624003 11/14/2018 Co-57 -1.22E+00 8.24E+00 2.78E+01 U SE 57 464624003 11/14/2018 Co-58 2.46E+01 2.10E+01 7.26E+01 U SE 57 464624003 11/14/2018 Co-60 3.41E+01 1.52E+01 5.63E+01 U SE 57 464624003 11/14/2018 Cr-51 -3.63E+02 2.23E+02 6.01E+02 U SE 57 464624003 11/14/2018 Cs-134 2.48E+01 2.04E+01 6.68E+01 U SE 57 464624003 11/14/2018 Cs-137 -1.26E+01 1.47E+01 4.50E+01 U SE 57 464624003 11/14/2018 Fe-59 -5.52E+01 5.33E+01 1.63E+02 U SE 57 464624003 11/14/2018 I-131 -3.01E+02 1.31E+02 3.35E+02 U SE 57 464624003 11/14/2018 K-40 1.70E+04 1.18E+03 4.68E+02 SE 57 464624003 11/14/2018 La-140 -1.45E+02 8.94E+01 1.91E+02 U SE 57 464624003 11/14/2018 Mn-54 -1.53E+01 1.92E+01 5.42E+01 U SE 57 464624003 11/14/2018 Nb-95 8.91E+00 2.03E+01 6.90E+01 U SE 57 464624003 11/14/2018 Pb-212 4.02E+02 5.76E+01 7.51E+01 SE 57 464624003 11/14/2018 Pb-214 4.00E+02 6.75E+01 1.84E+02 SE 57 464624003 11/14/2018 Ra-226 4.37E+02 7.90E+01 9.87E+01 SE 57 464624003 11/14/2018 Ru-103 3.97E+00 1.74E+01 6.13E+01 U SE 57 464624003 11/14/2018 Ru-106 -1.49E+02 1.44E+02 4.36E+02 U SE 57 464624003 11/14/2018 Sb-124 -3.97E+01 3.43E+01 7.85E+01 U SE 57 464624003 11/14/2018 Sb-125 3.59E+00 3.40E+01 1.20E+02 U SE 57 464624003 11/14/2018 Se-75 4.96E+00 1.79E+01 6.02E+01 U SE 57 464624003 11/14/2018 Th-228 4.02E+02 5.76E+01 7.51E+01 SE 57 464624003 11/14/2018 Th-230 4.37E+02 7.90E+01 9.87E+01 SE 57 464624003 11/14/2018 Tl-208 1.55E+02 3.77E+01 4.63E+01 SE 57 464624003 11/14/2018 Zn-65 1.56E+01 3.83E+01 1.34E+02 U SE 57 464624003 11/14/2018 Zr-95 1.03E+01 3.36E+01 1.14E+02 U -202-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TF 02 453142001 6/19/2018 Ac-228 -2.04E+01 1.24E+01 3.06E+01 U TF 02 453142001 6/19/2018 Ag-108m -3.29E-01 1.45E+00 4.75E+00 U TF 02 453142001 6/19/2018 Ag-110m 2.41E-02 2.57E+00 8.27E+00 U TF 02 453142001 6/19/2018 Ba-140 9.08E+00 8.91E+00 3.01E+01 U TF 02 453142001 6/19/2018 Be-7 2.41E+01 1.58E+01 5.29E+01 U TF 02 453142001 6/19/2018 Ce-141 -9.02E+00 4.36E+00 9.00E+00 U TF 02 453142001 6/19/2018 Ce-144 9.70E+00 1.02E+01 3.52E+01 U TF 02 453142001 6/19/2018 Co-57 1.44E+00 1.42E+00 4.88E+00 U TF 02 453142001 6/19/2018 Co-58 -2.37E+00 1.92E+00 5.31E+00 U TF 02 453142001 6/19/2018 Co-60 -5.73E-01 2.38E+00 6.84E+00 U TF 02 453142001 6/19/2018 Cr-51 1.92E+01 1.54E+01 5.22E+01 U TF 02 453142001 6/19/2018 Cs-134 5.01E+00 2.76E+00 6.87E+00 U TF 02 453142001 6/19/2018 Cs-137 2.03E+00 1.77E+00 6.02E+00 U TF 02 453142001 6/19/2018 Fe-59 -1.19E+00 3.41E+00 1.04E+01 U TF 02 453142001 6/19/2018 I-131 -4.96E+00 2.91E+00 8.06E+00 U TF 02 453142001 6/19/2018 K-40 1.55E+03 1.17E+02 4.75E+01 TF 02 453142001 6/19/2018 La-140 -3.95E+00 3.14E+00 8.59E+00 U TF 02 453142001 6/19/2018 Mn-54 1.11E+00 1.77E+00 5.91E+00 U TF 02 453142001 6/19/2018 Nb-95 -3.42E+00 2.01E+00 5.10E+00 U TF 02 453142001 6/19/2018 Ru-103 9.91E-01 1.72E+00 5.80E+00 U TF 02 453142001 6/19/2018 Ru-106 9.98E+00 1.65E+01 5.54E+01 U TF 02 453142001 6/19/2018 Sb-124 -1.36E+00 3.97E+00 1.27E+01 U TF 02 453142001 6/19/2018 Sb-125 -9.92E-01 4.37E+00 1.43E+01 U TF 02 453142001 6/19/2018 Se-75 -3.79E+00 2.30E+00 6.67E+00 U TF 02 453142001 6/19/2018 Th-228 -2.09E+00 3.89E+00 1.19E+01 U TF 02 4 53142001 6/19/2018 Zn-65 -2.73E+00 4.66E+00 1.31E+01 U TF 02 453142001 6/19/2018 Zr-95 -5.40E-01 3.40E+00 9.54E+00 U TF 02 455089001 7/17/2018 Ac-228 3.27E+01 2.31E+01 5.44E+01 U TF 02 455089001 7/17/2018 Ag-108m 1.00E-01 2.71E+00 9.09E+00 U TF 02 455089001 7/17/2018 Ag-110m 1.94E+00 4.35E+00 1.51E+01 U TF 02 455089001 7/17/2018 Ba-140 2.82E+01 1.57E+01 4.92E+01 U TF 02 455089001 7/17/2018 Be-7 6.61E+01 3.61E+01 7.46E+01 U TF 02 455089001 7/17/2018 Ce-141 3.29E+00 4.53E+00 1.50E+01 U TF 02 455089001 7/17/2018 Ce-144 9.55E+00 1.62E+01 5.39E+01 U TF 02 455089001 7/17/2018 Co-57 1.50E+00 2.07E+00 6.90E+00 U TF 02 455089001 7/17/2018 Co-58 4.30E+00 3.76E+00 1.25E+01 U TF 02 455089001 7/17/2018 Co-60 -4.37E-01 3.83E+00 1.24E+01 U TF 02 455089001 7/17/2018 Cr-51 9.17E+00 2.71E+01 9.36E+01 U TF 02 455089001 7/17/2018 Cs-134 2.21E+00 4.16E+00 1.37E+01 U TF 02 455089001 7/17/2018 Cs-137 1.34E+00 2.94E+00 9.81E+00 U TF 02 455089001 7/17/2018 Fe-59 1.16E+01 8.68E+00 2.75E+01 U TF 02 455089001 7/17/2018 I-131 2.72E+00 4.98E+00 1.72E+01 U TF 02 455089001 7/17/2018 K-40 2.80E+03 2.19E+02 1.16E+02 TF 02 455089001 7/17/2018 La-140 2.51E+00 5.52E+00 1.67E+01 U TF 02 455089001 7/17/2018 Mn-54 6.86E+00 3.26E+00 1.04E+01 U TF 02 455089001 7/17/2018 Nb-95 -7.55E-01 2.84E+00 8.87E+00 U TF 02 455089001 7/17/2018 Ru-103 7.05E-01 3.01E+00 1.01E+01 U TF 02 455089001 7/17/2018 Ru-106 1.69E+01 2.79E+01 9.37E+01 U TF 02 455089001 7/17/2018 Sb-124 6.29E+00 6.97E+00 2.30E+01 U TF 02 455089001 7/17/2018 Sb-125 2.72E+00 7.00E+00 2.39E+01 U -203-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TF 02 455089001 7/17/2018 Se-75 1.78E+00 3.88E+00 1.24E+01 U TF 02 455089001 7/17/2018 Th-228 1.09E+00 1.19E+01 2.00E+01 U TF 02 455089001 7/17/2018 Zn-65 -4.08E+00 8.82E+00 2.83E+01 U TF 02 455089001 7/17/2018 Zr-95 -3.40E+00 5.87E+00 1.78E+01 U TF 02 457581001 8/14/2018 Ac-228 -1.31E+01 1.42E+01 4.10E+01 U TF 02 457581001 8/14/2018 Ag-108m -1.69E-01 2.37E+00 7.65E+00 U TF 02 457581001 8/14/2018 Ag-110m -1.93E+00 4.02E+00 1.27E+01 U TF 02 457581001 8/14/2018 Ba-140 2.53E+01 1.45E+01 4.83E+01 U TF 02 457581001 8/14/2018 Be-7 2.99E+01 3.49E+01 8.08E+01 U TF 02 457581001 8/14/2018 Ce-141 -2.09E-01 3.72E+00 1.16E+01 U TF 02 457581001 8/14/2018 Ce-144 1.18E+01 1.41E+01 4.53E+01 U TF 02 457581001 8/14/2018 Co-57 2.35E-01 1.58E+00 5.04E+00 U TF 02 457581001 8/14/2018 Co-58 -1.51E+00 3.03E+00 9.63E+00 U TF 02 457581001 8/14/2018 Co-60 -8.90E-01 2.99E+00 9.74E+00 U TF 02 457581001 8/14/2018 Cr-51 1.86E+01 2.35E+01 7.96E+01 U TF 02 457581001 8/14/2018 Cs-134 -2.31E+00 3.17E+00 9.82E+00 U TF 02 457581001 8/14/2018 Cs-137 -5.92E+00 2.90E+00 6.95E+00 U TF 02 457581001 8/14/2018 Fe-59 -4.28E+00 6.28E+00 1.87E+01 U TF 02 457581001 8/14/2018 I-131 -1.17E+00 5.02E+00 1.63E+01 U TF 02 457581001 8/14/2018 K-40 1.80E+03 1.41E+02 9.22E+01 TF 02 457581001 8/14/2018 La-140 4.05E+00 4.64E+00 1.68E+01 U TF 02 457581001 8/14/2018 Mn-54 7.24E+00 3.31E+00 1.12E+01 U TF 02 457581001 8/14/2018 Nb-95 -4.45E-01 3.02E+00 9.24E+00 U TF 02 457581001 8/14/2018 Ru-103 1.40E+00 2.25E+00 6.89E+00 U TF 02 457581001 8/14/2018 Ru-106 2.03E+01 2.54E+01 8.91E+01 U TF 02 457581001 8/14/2018 Sb-124 -6.07E+00 6.26E+00 1.68E+01 U TF 02 457581001 8/14/2018 Sb-125 -3.63E+00 6.65E+00 2.07E+01 U TF 02 457581001 8/14/2018 Se-75 -2.01E+00 3.15E+00 1.02E+01 U TF 02 457581001 8/14/2018 Th-228 -4.28E-01 4.71E+00 1.52E+01 U TF 02 457581001 8/14/2018 Zn-65 -2.32E+00 6.95E+00 1.87E+01 U TF 02 457581001 8/14/2018 Zr-95 -3.73E+00 5.63E+00 1.46E+01 U TF 03 453142002 6/19/2018 Ac-228 1.64E+01 9.67E+00 2.82E+01 U TF 03 453142002 6/19/2018 Ag-108m 6.70E-01 1.27E+00 4.24E+00 U TF 03 453142002 6/19/2018 Ag-110m 2.31E+00 2.56E+00 8.82E+00 U TF 03 453142002 6/19/2018 Ba-140 -5.79E+00 7.83E+00 2.36E+01 U TF 03 453142002 6/19/2018 Be-7 7.04E+00 1.43E+01 4.72E+01 U TF 03 453142002 6/19/2018 Ce-141 2.92E+00 2.76E+00 8.10E+00 U TF 03 453142002 6/19/2018 Ce-144 1.86E+00 9.84E+00 3.10E+01 U TF 03 453142002 6/19/2018 Co-57 7.40E-01 1.30E+00 4.15E+00 U TF 03 453142002 6/19/2018 Co-58 1.82E-01 1.62E+00 5.49E+00 U TF 03 453142002 6/19/2018 Co-60 4.75E-01 1.95E+00 6.43E+00 U TF 03 453142002 6/19/2018 Cr-51 1.58E-01 1.39E+01 4.62E+01 U TF 03 453142002 6/19/2018 Cs-134 -2.44E+00 2.08E+00 6.07E+00 U TF 03 453142002 6/19/2018 Cs-137 0.00E+00 2.27E+00 6.06E+00 U TF 03 453142002 6/19/2018 Fe-59 -5.06E-01 4.86E+00 1.39E+01 U TF 03 453142002 6/19/2018 I-131 -1.79E+00 2.71E+00 8.55E+00 U TF 03 453142002 6/19/2018 K-40 1.58E+03 1.18E+02 4.59E+01 TF 03 453142002 6/19/2018 La-140 -1.93E+00 2.65E+00 8.13E+00 U TF 03 453142002 6/19/2018 Mn-54 1.21E+00 1.60E+00 5.53E+00 U -204-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TF 03 453142002 6/19/2018 Nb-95 -3.91E+00 2.65E+00 6.43E+00 U TF 03 453142002 6/19/2018 Ru-103 1.07E+00 1.55E+00 5.15E+00 U TF 03 453142002 6/19/2018 Ru-106 -1.38E+01 1.68E+01 4.98E+01 U TF 03 453142002 6/19/2018 Sb-124 1.14E+00 3.27E+00 1.09E+01 U TF 03 453142002 6/19/2018 Sb-125 -4.32E+00 4.34E+00 1.30E+01 U TF 03 453142002 6/19/2018 Se-75 -8.83E-01 2.23E+00 7.35E+00 U TF 03 453142002 6/19/2018 Th-228 1.96E+00 5.60E+00 1.22E+01 U TF 03 453142002 6/19/2018 Zn-65 1.50E+00 4.00E+00 1.35E+01 U TF 03 453142002 6/19/2018 Zr-95 -1.19E-01 2.83E+00 9.53E+00 U TF 03 455089002 7/17/2018 Ac-228 1.31E+00 1.60E+01 4.83E+01 U TF 03 455089002 7/17/2018 Ag-108m -4.03E-01 2.36E+00 7.51E+00 U TF 03 455089002 7/17/2018 Ag-110m -2.54E+00 4.33E+00 1.39E+01 U TF 03 455089002 7/17/2018 Ba-140 4.10E+00 1.32E+01 4.27E+01 U TF 03 455089002 7/17/2018 Be-7 1.84E+01 2.60E+01 8.51E+01 U TF 03 455089002 7/17/2018 Ce-141 -1.39E+01 6.61E+00 1.53E+01 U TF 03 455089002 7/17/2018 Ce-144 -2.66E+00 1.79E+01 5.94E+01 U TF 03 455089002 7/17/2018 Co-57 -3.39E+00 2.65E+00 8.17E+00 U TF 03 455089002 7/17/2018 Co-58 -1.99E+00 2.82E+00 8.91E+00 U TF 03 455089002 7/17/2018 Co-60 -2.65E+00 3.30E+00 9.86E+00 U TF 03 455089002 7/17/2018 Cr-51 -2.05E+01 2.38E+01 7.28E+01 U TF 03 455089002 7/17/2018 Cs-134 1.60E-01 2.96E+00 1.00E+01 U TF 03 455089002 7/17/2018 Cs-137 3.23E-01 2.54E+00 8.67E+00 U TF 03 455089002 7/17/2018 Fe-59 -9.94E+00 7.03E+00 1.97E+01 U TF 03 455089002 7/17/2018 I-131 -6.32E+00 5.43E+00 1.39E+01 U TF 03 455089002 7/17/2018 K-40 2.58E+03 1.82E+02 9.64E+01 TF 03 455089002 7/17/2018 La-140 -1.81E+00 4.95E+00 1.54E+01 U TF 03 455089002 7/17/2018 Mn-54 3.05E+00 2.74E+00 9.52E+00 U TF 03 455089002 7/17/2018 Nb-95 1.67E+00 3.06E+00 1.05E+01 U TF 03 455089002 7/17/2018 Ru-103 -2.65E+00 2.86E+00 8.40E+00 U TF 03 455089002 7/17/2018 Ru-106 1.43E+01 2.89E+01 8.92E+01 U TF 03 455089002 7/17/2018 Sb-124 4.50E+00 6.42E+00 2.22E+01 U TF 03 455089002 7/17/2018 Sb-125 1.25E+01 7.93E+00 2.58E+01 U TF 03 455089002 7/17/2018 Se-75 -2.21E+00 3.64E+00 1.15E+01 U TF 03 455089002 7/17/2018 Th-228 -1.66E+01 7.69E+00 1.75E+01 U TF 03 455089002 7/17/2018 Zn-65 4.69E+00 7.64E+00 2.33E+01 U TF 03 455089002 7/17/2018 Zr-95 1.14E+01 6.18E+00 1.93E+01 U TF 03 457581002 8/14/2018 Ac-228 -5.94E+00 1.14E+01 3.67E+01 U TF 03 457581002 8/14/2018 Ag-108m 1.58E+00 1.95E+00 6.78E+00 U TF 03 457581002 8/14/2018 Ag-110m 2.38E-01 3.37E+00 1.08E+01 U TF 03 457581002 8/14/2018 Ba-140 6.82E-02 1.18E+01 3.91E+01 U TF 03 457581002 8/14/2018 Be-7 6.10E+01 2.50E+01 8.13E+01 U TF 03 457581002 8/14/2018 Ce-141 -2.51E-01 3.57E+00 1.15E+01 U TF 03 457581002 8/14/2018 Ce-144 2.28E+01 1.46E+01 4.74E+01 U TF 03 457581002 8/14/2018 Co-57 -2.07E+00 1.64E+00 4.69E+00 U TF 03 457581002 8/14/2018 Co-58 -4.58E-02 2.54E+00 8.17E+00 U TF 03 457581002 8/14/2018 Co-60 1.81E+00 2.20E+00 8.04E+00 U TF 03 457581002 8/14/2018 Cr-51 -1.62E+01 2.03E+01 6.51E+01 U TF 03 457581002 8/14/2018 Cs-134 -1.04E+00 2.01E+00 5.95E+00 U TF 03 457581002 8/14/2018 Cs-137 2.44E+00 2.34E+00 8.13E+00 U -205-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TF 03 457581002 8/14/2018 Fe-59 3.97E+00 5.87E+00 2.07E+01 U TF 03 457581002 8/14/2018 I-131 -4.74E+00 4.26E+00 1.29E+01 U TF 03 457581002 8/14/2018 K-40 2.46E+03 1.89E+02 7.72E+01 TF 03 457581002 8/14/2018 La-140 -2.66E+00 4.09E+00 1.18E+01 U TF 03 457581002 8/14/2018 Mn-54 -6.09E-01 2.68E+00 8.42E+00 U TF 03 457581002 8/14/2018 Nb-95 1.69E-01 2.26E+00 6.58E+00 U TF 03 457581002 8/14/2018 Ru-103 7.69E-01 2.07E+00 7.07E+00 U TF 03 457581002 8/14/2018 Ru-106 -2.74E+00 2.04E+01 6.59E+01 U TF 03 457581002 8/14/2018 Sb-124 -3.90E+00 3.91E+00 8.61E+00 U TF 03 457581002 8/14/2018 Sb-125 -8.31E+00 6.14E+00 1.76E+01 U TF 03 457581002 8/14/2018 Se-75 -9.22E-01 2.57E+00 7.74E+00 U TF 03 457581002 8/14/2018 Th-228 6.00E+00 4.64E+00 1.40E+01 U TF 03 457581002 8/14/2018 Zn-65 -1.49E+00 6.46E+00 2.04E+01 U TF 03 457581002 8/14/2018 Zr-95 -9.77E-01 4.09E+00 1.29E+01 U TF 06 453142003 6/19/2018 Ac-228 -4.57E+00 8.77E+00 2.52E+01 U TF 06 453142003 6/19/2018 Ag-108m -1.11E+00 1.43E+00 4.37E+00 U TF 06 453142003 6/19/2018 Ag-110m 2.34E-01 1.95E+00 6.52E+00 U TF 06 453142003 6/19/2018 Ba-140 -1.01E+00 8.05E+00 2.56E+01 U TF 06 453142003 6/19/2018 Be-7 7.44E+01 2.56E+01 4.43E+01 TF 06 453142003 6/19/2018 Ce-141 1.42E+00 2.70E+00 8.53E+00 U TF 06 453142003 6/19/2018 Ce-144 -5.38E+00 9.40E+00 2.86E+01 U TF 06 453142003 6/19/2018 Co-57 -1.23E+00 1.41E+00 4.23E+00 U TF 06 453142003 6/19/2018 Co-58 -2.70E-01 1.55E+00 5.11E+00 U TF 06 453142003 6/19/2018 Co-60 -1.74E+00 1.92E+00 5.43E+00 U TF 06 453142003 6/19/2018 Cr-51 1.15E+01 1.42E+01 4.77E+01 U TF 06 453142003 6/19/2018 Cs-134 -1.76E-01 1.88E+00 6.26E+00 U TF 06 453142003 6/19/2018 Cs-137 -5.63E-02 1.65E+00 5.60E+00 U TF 06 453142003 6/19/2018 Fe-59 5.42E-01 3.79E+00 1.25E+01 U TF 06 453142003 6/19/2018 I-131 -1.76E+00 2.90E+00 9.19E+00 U TF 06 453142003 6/19/2018 K-40 1.17E+03 9.89E+01 6.89E+01 TF 06 453142003 6/19/2018 La-140 7.03E-01 2.99E+00 1.02E+01 U TF 06 453142003 6/19/2018 Mn-54 2.25E-01 1.60E+00 5.39E+00 U TF 06 453142003 6/19/2018 Nb-95 1.89E+00 2.02E+00 6.31E+00 U TF 06 453142003 6/19/2018 Ru-103 -3.96E-01 1.72E+00 4.84E+00 U TF 06 453142003 6/19/2018 Ru-106 -4.37E+00 1.54E+01 4.77E+01 U TF 06 453142003 6/19/2018 Sb-124 2.95E+00 3.87E+00 1.37E+01 U TF 06 453142003 6/19/2018 Sb-125 -1.90E+00 4.66E+00 1.48E+01 U TF 06 453142003 6/19/2018 Se-75 -2.20E+00 2.13E+00 6.67E+00 U TF 06 453142003 6/19/2018 Th-228 -2.64E+00 3.92E+00 1.12E+01 U TF 06 453142003 6/19/2018 Zn-65 8.94E+00 4.68E+00 1.56E+01 U TF 06 453142003 6/19/2018 Zr-95 4.64E+00 3.39E+00 1.07E+01 U TF 06 455089003 7/17/2018 Ac-228 1.68E+01 1.07E+01 3.27E+01 U TF 06 455089003 7/17/2018 Ag-108m -1.80E+00 2.23E+00 6.15E+00 U TF 06 455089003 7/17/2018 Ag-110m -3.21E+00 3.55E+00 9.52E+00 U TF 06 455089003 7/17/2018 Ba-140 -6.08E+00 1.28E+01 3.68E+01 U TF 06 455089003 7/17/2018 Be-7 1.45E+02 3.59E+01 6.04E+01 TF 06 455089003 7/17/2018 Ce-141 -2.82E+00 3.14E+00 1.03E+01 U TF 06 455089003 7/17/2018 Ce-144 -1.84E+00 1.10E+01 3.76E+01 U TF 06 455089003 7/17/2018 Co-57 1.24E+00 1.53E+00 5.28E+00 U -206-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TF 06 455089003 7/17/2018 Co-58 5.36E-01 2.00E+00 6.83E+00 U TF 06 455089003 7/17/2018 Co-60 2.70E+00 2.45E+00 8.35E+00 U TF 06 455089003 7/17/2018 Cr-51 2.68E+01 1.98E+01 6.50E+01 U TF 06 455089003 7/17/2018 Cs-134 -4.85E+00 3.01E+00 7.54E+00 U TF 06 455089003 7/17/2018 Cs-137 1.87E+00 2.38E+00 7.73E+00 U TF 06 455089003 7/17/2018 Fe-59 3.15E+00 4.87E+00 1.65E+01 U TF 06 455089003 7/17/2018 I-131 1.17E+00 3.48E+00 1.15E+01 U TF 06 455089003 7/17/2018 K-40 2.66E+03 1.66E+02 6.31E+01 TF 06 455089003 7/17/2018 La-140 -1.08E+00 3.26E+00 1.01E+01 U TF 06 455089003 7/17/2018 Mn-54 -2.81E+00 2.48E+00 7.59E+00 U TF 06 455089003 7/17/2018 Nb-95 1.18E+00 2.01E+00 6.94E+00 U TF 06 455089003 7/17/2018 Ru-103 9.08E-01 2.13E+00 6.98E+00 U TF 06 455089003 7/17/2018 Ru-106 1.90E+01 1.91E+01 6.25E+01 U TF 06 455089003 7/17/2018 Sb-124 -1.23E+01 5.96E+00 1.22E+01 U TF 06 455089003 7/17/2018 Sb-125 -6.65E+00 5.65E+00 1.67E+01 U TF 06 455089003 7/17/2018 Se-75 9.46E-01 2.74E+00 9.21E+00 U TF 06 455089003 7/17/2018 Th-228 -3.50E+00 4.17E+00 1.24E+01 U TF 06 455089003 7/17/2018 Zn-65 7.44E-01 4.26E+00 1.42E+01 U TF 06 455089003 7/17/2018 Zr-95 -3.48E+00 3.89E+00 1.23E+01 U TF 06 457581003 8/14/2018 Ac-228 -3.51E+00 1.14E+01 3.83E+01 U TF 06 457581003 8/14/2018 Ag-108m -5.89E-01 2.09E+00 6.72E+00 U TF 06 457581003 8/14/2018 Ag-110m 5.90E-01 3.38E+00 1.14E+01 U TF 06 457581003 8/14/2018 Ba-140 -1.59E-01 1.13E+01 3.63E+01 U TF 06 457581003 8/14/2018 Be-7 -1.35E+01 1.96E+01 5.93E+01 U TF 06 457581003 8/14/2018 Ce-141 -4.52E+00 3.61E+00 9.24E+00 U TF 06 457581003 8/14/2018 Ce-144 1.53E+01 1.20E+01 4.05E+01 U TF 06 457581003 8/14/2018 Co-57 -2.87E-01 1.55E+00 5.09E+00 U TF 06 457581003 8/14/2018 Co-58 2.16E+00 2.75E+00 9.59E+00 U TF 06 457581003 8/14/2018 Co-60 2.30E+00 3.03E+00 1.08E+01 U TF 06 457581003 8/14/2018 Cr-51 1.34E+01 2.10E+01 7.28E+01 U TF 06 457581003 8/14/2018 Cs-134 -5.86E+00 3.11E+00 7.66E+00 U TF 06 457581003 8/14/2018 Cs-137 3.70E+00 3.00E+00 9.73E+00 U TF 06 457581003 8/14/2018 Fe-59 -1.63E-02 7.37E+00 2.38E+01 U TF 06 457581003 8/14/2018 I-131 -4.03E+00 3.86E+00 1.15E+01 U TF 06 457581003 8/14/2018 K-40 1.89E+03 1.57E+02 8.66E+01 TF 06 457581003 8/14/2018 La-140 -3.28E+00 3.22E+00 7.63E+00 U TF 06 457581003 8/14/2018 Mn-54 -4.69E-01 2.55E+00 8.31E+00 U TF 06 457581003 8/14/2018 Nb-95 9.63E-01 2.53E+00 8.70E+00 U TF 06 457581003 8/14/2018 Ru-103 -1.06E-01 2.33E+00 7.55E+00 U TF 06 457581003 8/14/2018 Ru-106 3.39E+01 1.95E+01 6.81E+01 U TF 06 457581003 8/14/2018 Sb-124 1.86E+00 5.94E+00 2.04E+01 U TF 06 457581003 8/14/2018 Sb-125 -2.65E+00 6.23E+00 1.98E+01 U TF 06 457581003 8/14/2018 Se-75 1.29E+00 2.43E+00 8.53E+00 U TF 06 457581003 8/14/2018 Th-228 -4.65E+00 4.72E+00 1.40E+01 U TF 06 457581003 8/14/2018 Zn-65 -7.92E-01 8.14E+00 2.60E+01 U TF 06 457581003 8/14/2018 Zr-95 4.61E+00 4.93E+00 1.74E+01 U -207-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 08 451320001 5/22/2018 Ac-228 -1.56E+01 2.31E+01 6.88E+01 U TG 08 451320001 5/22/2018 Ag-108m -1.28E+00 2.99E+00 9.42E+00 U TG 08 451320001 5/22/2018 Ag-110m -4.27E-01 5.02E+00 1.66E+01 U TG 08 451320001 5/22/2018 Ba-140 1.06E+01 2.36E+01 6.96E+01 U TG 08 451320001 5/22/2018 Be-7 2.22E+02 6.63E+01 1.18E+02 TG 08 451320001 5/22/2018 Ce-141 -3.44E+00 8.45E+00 2.12E+01 U TG 08 451320001 5/22/2018 Ce-144 -4.11E+01 2.52E+01 6.81E+01 U TG 08 451320001 5/22/2018 Co-57 2.57E+00 2.99E+00 9.56E+00 U TG 08 451320001 5/22/2018 Co-58 2.13E+00 4.07E+00 1.39E+01 U TG 08 451320001 5/22/2018 Co-60 -8.91E+00 7.78E+00 1.85E+01 U TG 08 451320001 5/22/2018 Cr-51 1.86E+01 3.66E+01 1.23E+02 U TG 08 451320001 5/22/2018 Cs-134 -5.21E+00 5.64E+00 1.51E+01 U TG 08 451320001 5/22/2018 Cs-137 1.00E+00 4.14E+00 1.42E+01 U TG 08 451320001 5/22/2018 Fe-59 -2.20E+00 9.35E+00 2.99E+01 U TG 08 451320001 5/22/2018 I-131 7.31E-01 8.61E+00 2.85E+01 U TG 08 451320001 5/22/2018 K-40 4.05E+03 2.95E+02 9.90E+01 TG 08 451320001 5/22/2018 La-140 -8.00E+00 8.42E+00 2.49E+01 U TG 08 451320001 5/22/2018 Mn-54 6.45E+00 3.98E+00 1.37E+01 U TG 08 451320001 5/22/2018 Nb-95 8.95E+00 6.20E+00 1.38E+01 U TG 08 451320001 5/22/2018 Ru-103 -6.29E-01 4.18E+00 1.34E+01 U TG 08 451320001 5/22/2018 Ru-106 -1.24E+01 3.54E+01 1.09E+02 U TG 08 451320001 5/22/2018 Sb-124 1.22E+01 8.90E+00 3.27E+01 U TG 08 451320001 5/22/2018 Sb-125 1.56E+01 1.65E+01 3.44E+01 U TG 08 451320001 5/22/2018 Se-75 -4.53E+00 4.68E+00 1.47E+01 U TG 08 451320001 5/22/2018 Th-228 -7.38E+00 9.55E+00 2.71E+01 U TG 08 451320001 5/22/2018 Zn-65 9.37E+00 1.06E+01 3.57E+01 U TG 08 451320001 5/22/2018 Zr-95 3.97E+00 7.78E+00 2.67E+01 U TG 08 453142004 6/19/2018 Ac-228 5.59E+01 5.04E+01 8.10E+01 U TG 08 453142004 6/19/2018 Ag-108m -2.45E+00 4.44E+00 1.46E+01 U TG 08 453142004 6/19/2018 Ag-110m 4.72E+00 7.71E+00 2.55E+01 U TG 08 453142004 6/19/2018 Ba-140 5.88E+01 2.85E+01 9.10E+01 U TG 08 453142004 6/19/2018 Be-7 5.05E+02 9.09E+01 1.28E+02 TG 08 453142004 6/19/2018 Ce-141 -1.57E+01 1.18E+01 2.46E+01 U TG 08 453142004 6/19/2018 Ce-144 1.56E+00 2.81E+01 9.09E+01 U TG 08 453142004 6/19/2018 Co-57 5.78E+00 3.72E+00 1.17E+01 U TG 08 453142004 6/19/2018 Co-58 -2.27E-01 4.99E+00 1.62E+01 U TG 08 453142004 6/19/2018 Co-60 8.38E-01 5.48E+00 1.87E+01 U TG 08 453142004 6/19/2018 Cr-51 -2.83E+01 4.32E+01 1.44E+02 U TG 08 453142004 6/19/2018 Cs-134 1.33E+01 6.53E+00 2.08E+01 U TG 08 453142004 6/19/2018 Cs-137 6.89E+00 5.69E+00 1.90E+01 U TG 08 453142004 6/19/2018 Fe-59 -1.05E+01 1.19E+01 3.48E+01 U TG 08 453142004 6/19/2018 I-131 -8.28E-01 8.27E+00 2.81E+01 U TG 08 453142004 6/19/2018 K-40 4.30E+03 2.94E+02 1.89E+02 TG 08 453142004 6/19/2018 La-140 7.15E+00 1.42E+01 2.50E+01 U TG 08 453142004 6/19/2018 Mn-54 -4.14E+00 5.51E+00 1.69E+01 U TG 08 453142004 6/19/2018 Nb-95 1.33E+01 6.14E+00 1.93E+01 U TG 08 453142004 6/19/2018 Ru-103 1.30E+00 4.70E+00 1.59E+01 U TG 08 453142004 6/19/2018 Ru-106 -9.98E+01 5.15E+01 1.37E+02 U TG 08 453142004 6/19/2018 Sb-124 6.23E+00 1.09E+01 3.75E+01 U TG 08 453142004 6/19/2018 Sb-125 4.82E-01 1.30E+01 4.39E+01 U -208-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 08 453142004 6/19/2018 Se-75 9.06E-01 6.43E+00 2.02E+01 U TG 08 453142004 6/19/2018 Th-228 -1.84E+01 1.39E+01 3.38E+01 U TG 08 453142004 6/19/2018 Zn-65 -4.91E-01 1.24E+01 3.93E+01 U TG 08 453142004 6/19/2018 Zr-95 1.40E+01 9.75E+00 3.23E+01 U TG 08 455089004 7/17/2018 Ac-228 1.37E+02 4.92E+01 5.54E+01 TG 08 455089004 7/17/2018 Ag-108m -1.30E-01 3.29E+00 1.09E+01 U TG 08 455089004 7/17/2018 Ag-110m 9.87E+00 6.31E+00 2.11E+01 U TG 08 455089004 7/17/2018 Ba-140 0.00E+00 4.04E+01 5.36E+01 U TG 08 455089004 7/17/2018 Be-7 1.02E+03 9.92E+01 1.10E+02 TG 08 455089004 7/17/2018 Ce-141 -1.60E+01 9.87E+00 1.87E+01 U TG 08 455089004 7/17/2018 Ce-144 1.58E+01 2.26E+01 7.28E+01 U TG 08 455089004 7/17/2018 Co-57 -1.15E+00 2.87E+00 9.11E+00 U TG 08 455089004 7/17/2018 Co-58 7.13E+00 4.50E+00 1.51E+01 U TG 08 455089004 7/17/2018 Co-60 6.51E+00 5.16E+00 1.73E+01 U TG 08 455089004 7/17/2018 Cr-51 -3.66E+01 3.62E+01 1.15E+02 U TG 08 455089004 7/17/2018 Cs-134 -3.16E+00 5.54E+00 1.69E+01 U TG 08 455089004 7/17/2018 Cs-137 5.29E+00 4.69E+00 1.52E+01 U TG 08 455089004 7/17/2018 Fe-59 2.00E+01 1.03E+01 3.34E+01 U TG 08 455089004 7/17/2018 I-131 -8.17E-02 6.34E+00 2.12E+01 U TG 08 455089004 7/17/2018 K-40 3.83E+03 2.69E+02 1.54E+02 TG 08 455089004 7/17/2018 La-140 7.61E+00 7.00E+00 2.14E+01 U TG 08 455089004 7/17/2018 Mn-54 -4.05E-01 4.30E+00 1.45E+01 U TG 08 455089004 7/17/2018 Nb-95 -5.01E+00 4.77E+00 1.39E+01 U TG 08 455089004 7/17/2018 Ru-103 9.56E+00 5.82E+00 1.25E+01 U TG 08 455089004 7/17/2018 Ru-106 -9.13E+00 3.88E+01 1.24E+02 U TG 08 455089004 7/17/2018 Sb-124 -7.05E+00 1.00E+01 3.17E+01 U TG 08 455089004 7/17/2018 Sb-125 -2.13E+01 1.14E+01 3.17E+01 U TG 08 455089004 7/17/2018 Se-75 -3.15E+00 4.85E+00 1.61E+01 U TG 08 455089004 7/17/2018 Th-228 3.16E+01 1.47E+01 2.29E+01 TG 08 455089004 7/17/2018 Zn-65 -5.41E+00 1.01E+01 3.24E+01 U TG 08 455089004 7/17/2018 Zr-95 -5.71E+00 7.76E+00 2.34E+01 U TG 08 457581004 8/14/2018 Ac-228 8.93E+01 5.13E+01 9.58E+01 U TG 08 457581004 8/14/2018 Ag-108m 3.04E+00 4.08E+00 1.38E+01 U TG 08 457581004 8/14/2018 Ag-110m 2.19E+00 7.46E+00 2.40E+01 U TG 08 457581004 8/14/2018 Ba-140 5.21E+00 2.40E+01 7.95E+01 U TG 08 457581004 8/14/2018 Be-7 2.78E+03 1.87E+02 1.42E+02 TG 08 457581004 8/14/2018 Ce-141 3.40E+00 1.22E+01 2.25E+01 U TG 08 457581004 8/14/2018 Ce-144 -1.36E+01 2.67E+01 7.62E+01 U TG 08 457581004 8/14/2018 Co-57 -6.71E+00 3.84E+00 9.52E+00 U TG 08 457581004 8/14/2018 Co-58 2.91E+00 5.49E+00 1.62E+01 U TG 08 457581004 8/14/2018 Co-60 9.58E+00 6.46E+00 2.21E+01 U TG 08 457581004 8/14/2018 Cr-51 -1.47E+01 4.25E+01 1.42E+02 U TG 08 457581004 8/14/2018 Cs-134 6.03E+00 5.81E+00 1.92E+01 U TG 08 457581004 8/14/2018 Cs-137 -1.50E+01 8.21E+00 1.72E+01 U TG 08 457581004 8/14/2018 Fe-59 5.33E+00 1.17E+01 3.99E+01 U TG 08 457581004 8/14/2018 I-131 -8.70E+00 9.25E+00 2.91E+01 U TG 08 457581004 8/14/2018 K-40 5.08E+03 3.30E+02 1.47E+02 TG 08 457581004 8/14/2018 La-140 3.73E+00 9.39E+00 2.82E+01 U TG 08 457581004 8/14/2018 Mn-54 8.40E+00 6.40E+00 1.21E+01 U -209-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 08 457581004 8/14/2018 Nb-95 1.21E+00 4.91E+00 1.59E+01 U TG 08 457581004 8/14/2018 Ru-103 4.72E+00 4.92E+00 1.66E+01 U TG 08 457581004 8/14/2018 Ru-106 6.93E+01 4.54E+01 1.50E+02 U TG 08 457581004 8/14/2018 Sb-124 1.04E+01 1.11E+01 3.88E+01 U TG 08 457581004 8/14/2018 Sb-125 2.22E+01 1.87E+01 3.93E+01 U TG 08 457581004 8/14/2018 Se-75 -2.86E+00 5.75E+00 1.92E+01 U TG 08 457581004 8/14/2018 Th-228 -1.92E+01 1.14E+01 2.94E+01 U TG 08 457581004 8/14/2018 Zn-65 -1.95E+01 1.19E+01 2.63E+01 U TG 08 457581004 8/14/2018 Zr-95 -1.02E+01 8.46E+00 2.36E+01 U TG 08 459446001 9/12/2018 Ac-228 1.73E+02 8.19E+01 1.83E+02 U TG 08 459446001 9/12/2018 Ag-108m 1.57E+01 1.06E+01 3.25E+01 U TG 08 459446001 9/12/2018 Ag-110m -1.46E+01 1.62E+01 4.96E+01 U TG 08 459446001 9/12/2018 Ba-140 4.02E+01 5.11E+01 1.71E+02 U TG 08 459446001 9/12/2018 Be-7 8.07E+02 1.66E+02 2.92E+02 TG 08 459446001 9/12/2018 Ce-141 -1.88E+01 1.46E+01 4.52E+01 U TG 08 459446001 9/12/2018 Ce-144 -2.78E+01 4.99E+01 1.66E+02 U TG 08 459446001 9/12/2018 Co-57 -5.53E+00 6.89E+00 2.26E+01 U TG 08 459446001 9/12/2018 Co-58 1.78E+01 1.17E+01 4.06E+01 U TG 08 459446001 9/12/2018 Co-60 2.41E+00 9.26E+00 3.11E+01 U TG 08 459446001 9/12/2018 Cr-51 -1.43E+02 9.47E+01 2.69E+02 U TG 08 459446001 9/12/2018 Cs-134 -1.15E+01 1.21E+01 3.70E+01 U TG 08 459446001 9/12/2018 Cs-137 1.09E+01 1.09E+01 3.35E+01 U TG 08 459446001 9/12/2018 Fe-59 -6.91E+00 2.21E+01 7.06E+01 U TG 08 459446001 9/12/2018 I-131 4.15E+00 1.78E+01 5.91E+01 U TG 08 459446001 9/12/2018 K-40 4.06E+03 4.74E+02 3.88E+02 TG 08 459446001 9/12/2018 La-140 5.83E+00 1.23E+01 4.29E+01 U TG 08 459446001 9/12/2018 Mn-54 1.10E+01 8.62E+00 3.07E+01 U TG 08 459446001 9/12/2018 Nb-95 -6.77E+00 1.06E+01 3.40E+01 U TG 08 459446001 9/12/2018 Ru-103 -3.16E+00 1.05E+01 3.31E+01 U TG 08 459446001 9/12/2018 Ru-106 1.43E+02 9.97E+01 3.31E+02 U TG 08 459446001 9/12/2018 Sb-124 -2.48E+01 2.50E+01 6.53E+01 U TG 08 459446001 9/12/2018 Sb-125 3.28E+01 2.71E+01 8.38E+01 U TG 08 459446001 9/12/2018 S e-75 5.80E+00 1.17E+01 3.98E+01 U TG 08 459446001 9/12/2018 Th-228 6.01E+01 3.11E+01 6.56E+01 U TG 08 459446001 9/12/2018 Zn-65 -3.30E+01 2.37E+01 6.34E+01 U TG 08 459446001 9/12/2018 Zr-95 1.43E+01 1.74E+01 6.12E+01 U TG 08 461676001 10/10/2018 Ac-228 8.01E+01 4.07E+01 8.30E+01 U TG 08 461676001 10/10/2018 Ag-108m -3.84E+00 3.47E+00 1.08E+01 U TG 08 461676001 10/10/2018 Ag-110m 5.95E-01 5.55E+00 1.77E+01 U TG 08 461676001 10/10/2018 Ba-140 -3.13E+00 1.68E+01 5.50E+01 U TG 08 461676001 10/10/2018 Be-7 3.34E+03 1.79E+02 1.04E+02 TG 08 461676001 10/10/2018 Ce-141 5.87E-01 6.35E+00 2.06E+01 U TG 08 461676001 10/10/2018 Ce-144 2.59E+01 2.47E+01 7.42E+01 U TG 08 461676001 10/10/2018 Co-57 0.00E+00 4.78E+00 9.36E+00 U TG 08 461676001 10/10/2018 Co-58 4.19E+00 3.88E+00 1.28E+01 U TG 08 461676001 10/10/2018 Co-60 -5.34E+00 4.70E+00 1.39E+01 U TG 08 461676001 10/10/2018 Cr-51 -9.55E+00 3.36E+01 1.14E+02 U TG 08 461676001 10/10/2018 Cs-134 1.44E+01 7.45E+00 1.64E+01 U TG 08 461676001 10/10/2018 Cs-137 1.05E+01 4.85E+00 1.51E+01 U -210-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 08 461676001 10/10/2018 Fe-59 -1.18E+01 8.28E+00 2.40E+01 U TG 08 461676001 10/10/2018 I-131 2.35E+00 6.16E+00 2.10E+01 U TG 08 461676001 10/10/2018 K-40 2.89E+03 2.32E+02 1.22E+02 TG 08 461676001 10/10/2018 La-140 -2.56E+00 6.51E+00 2.05E+01 U TG 08 461676001 10/10/2018 Mn-54 -1.42E+00 3.99E+00 1.25E+01 U TG 08 461676001 10/10/2018 Nb-95 -1.56E+00 5.63E+00 1.43E+01 U TG 08 461676001 10/10/2018 Ru-103 3.91E+00 3.77E+00 1.26E+01 U TG 08 461676001 10/10/2018 Ru-106 4.92E+01 4.04E+01 1.33E+02 U TG 08 461676001 10/10/2018 Sb-124 -5.51E+00 8.82E+00 2.67E+01 U TG 08 461676001 10/10/2018 Sb-125 -5.65E+00 1.05E+01 3.42E+01 U TG 08 461676001 10/10/2018 Se-75 -1.61E+00 5.63E+00 1.73E+01 U TG 08 461676001 10/10/2018 Th-228 2.13E+01 1.56E+01 2.98E+01 U TG 08 461676001 10/10/2018 Zn-65 6.55E+00 1.00E+01 3.07E+01 U TG 08 461676001 10/10/2018 Zr-95 7.54E+00 8.34E+00 2.48E+01 U TG 09 451320002 5/22/2018 Ac-228 2.84E+01 3.20E+01 6.56E+01 U TG 09 451320002 5/22/2018 Ag-108m 9.57E-01 3.16E+00 1.07E+01 U TG 09 451320002 5/22/2018 Ag-110m -3.55E+00 5.15E+00 1.52E+01 U TG 09 451320002 5/22/2018 Ba-140 2.64E+01 1.99E+01 6.78E+01 U TG 09 451320002 5/22/2018 Be-7 6.96E+02 8.93E+01 9.81E+01 TG 09 451320002 5/22/2018 Ce-141 -1.21E+01 6.36E+00 1.69E+01 U TG 09 451320002 5/22/2018 Ce-144 -9.41E-01 1.98E+01 6.42E+01 U TG 09 451320002 5/22/2018 Co-57 3.23E+00 2.56E+00 8.38E+00 U TG 09 451320002 5/22/2018 Co-58 4.58E+00 4.53E+00 1.39E+01 U TG 09 451320002 5/22/2018 Co-60 1.77E+00 4.09E+00 1.40E+01 U TG 09 451320002 5/22/2018 Cr-51 3.97E+01 3.88E+01 1.09E+02 U TG 09 451320002 5/22/2018 Cs-134 -1.17E+00 4.43E+00 1.40E+01 U TG 09 451320002 5/22/2018 Cs-137 9.23E+00 5.04E+00 9.79E+00 U TG 09 451320002 5/22/2018 Fe-59 1.09E+01 8.88E+00 3.12E+01 U TG 09 451320002 5/22/2018 I-131 -1.15E+00 6.95E+00 2.34E+01 U TG 09 451320002 5/22/2018 K-40 4.00E+03 2.59E+02 7.07E+01 TG 09 451320002 5/22/2018 La-140 3.14E+00 6.36E+00 2.19E+01 U TG 09 451320002 5/22/2018 Mn-54 5.81E+00 3.77E+00 1.27E+01 U TG 09 451320002 5/22/2018 Nb-95 -8.53E+00 6.21E+00 1.30E+01 U TG 09 451320002 5/22/2018 Ru-103 3.12E+00 3.64E+00 1.25E+01 U TG 09 451320002 5/22/2018 Ru-106 -5.55E+01 4.16E+01 1.08E+02 U TG 09 451320002 5/22/2018 Sb-124 -1.51E+01 9.25E+00 2.06E+01 U TG 09 451320002 5/22/2018 Sb-125 -1.41E+00 8.31E+00 2.77E+01 U TG 09 451320002 5/22/2018 Se-75 4.25E-01 4.43E+00 1.28E+01 U TG 09 451320002 5/22/2018 Th-228 1.23E+01 1.09E+01 2.34E+01 U TG 09 451320002 5/22/2018 Zn-65 1.60E+01 8.83E+00 2.49E+01 U TG 09 451320002 5/22/2018 Zr-95 1.90E+00 7.10E+00 2.34E+01 U TG 09 453142005 6/19/2018 Ac-228 6.48E+01 5.61E+01 9.21E+01 U TG 09 453142005 6/19/2018 Ag-108m -4.43E+00 4.52E+00 1.19E+01 U TG 09 453142005 6/19/2018 Ag-110m -9.47E+00 7.26E+00 2.17E+01 U TG 09 453142005 6/19/2018 Ba-140 1.30E+01 2.71E+01 8.75E+01 U TG 09 453142005 6/19/2018 Be-7 6.67E+02 1.04E+02 1.44E+02 TG 09 453142005 6/19/2018 Ce-141 1.86E+00 8.38E+00 2.80E+01 U TG 09 453142005 6/19/2018 Ce-144 2.36E+01 3.18E+01 1.06E+02 U TG 09 453142005 6/19/2018 Co-57 7.41E-01 4.05E+00 1.36E+01 U -211-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 09 453142005 6/19/2018 Co-58 2.28E+00 5.21E+00 1.78E+01 U TG 09 453142005 6/19/2018 Co-60 1.09E+00 6.62E+00 1.93E+01 U TG 09 453142005 6/19/2018 Cr-51 -2.66E+01 4.63E+01 1.47E+02 U TG 09 453142005 6/19/2018 Cs-134 -3.08E+00 5.77E+00 1.89E+01 U TG 09 453142005 6/19/2018 Cs-137 -1.51E+00 5.44E+00 1.82E+01 U TG 09 453142005 6/19/2018 Fe-59 7.84E+00 1.09E+01 3.70E+01 U TG 09 453142005 6/19/2018 I-131 -2.45E+00 8.35E+00 2.67E+01 U TG 09 453142005 6/19/2018 K-40 5.11E+03 3.29E+02 1.96E+02 TG 09 453142005 6/19/2018 La-140 1.36E+01 9.10E+00 3.08E+01 U TG 09 453142005 6/19/2018 Mn-54 0.00E+00 1.57E+01 1.63E+01 U TG 09 453142005 6/19/2018 Nb-95 9.77E+00 6.12E+00 2.03E+01 U TG 09 453142005 6/19/2018 Ru-103 -7.35E+00 5.52E+00 1.58E+01 U TG 09 453142005 6/19/2018 Ru-106 -5.32E+01 4.55E+01 1.42E+02 U TG 09 453142005 6/19/2018 Sb-124 2.01E+01 1.29E+01 4.38E+01 U TG 09 453142005 6/19/2018 Sb-125 6.25E+00 1.32E+01 4.28E+01 U TG 09 453142005 6/19/2018 Se-75 1.58E+01 7.31E+00 2.21E+01 U TG 09 453142005 6/19/2018 Th-228 7.73E+00 1.69E+01 2.77E+01 U TG 09 453142005 6/19/2018 Zn-65 1.37E+01 1.25E+01 4.22E+01 U TG 09 453142005 6/19/2018 Zr-95 2.00E+00 9.59E+00 3.26E+01 U TG 09 455089005 7/17/2018 Ac-228 6.14E+01 6.41E+01 6.86E+01 U TG 09 455089005 7/17/2018 Ag-108m 1.97E+00 5.07E+00 1.71E+01 U TG 09 455089005 7/17/2018 Ag-110m -1.23E+01 8.68E+00 2.39E+01 U TG 09 455089005 7/17/2018 Ba-140 3.15E+01 2.76E+01 9.17E+01 U TG 09 455089005 7/17/2018 Be-7 7.60E+02 1.04E+02 1.56E+02 TG 09 455089005 7/17/2018 Ce-141 -1.40E+01 9.41E+00 2.75E+01 U TG 09 455089005 7/17/2018 Ce-144 -4.00E+01 4.60E+01 1.03E+02 U TG 09 455089005 7/17/2018 Co-57 2.53E+00 4.23E+00 1.39E+01 U TG 09 455089005 7/17/2018 Co-58 -2.20E+00 6.13E+00 1.92E+01 U TG 09 455089005 7/17/2018 Co-60 -7.50E-01 6.63E+00 2.17E+01 U TG 09 455089005 7/17/2018 Cr-51 8.39E+01 5.62E+01 1.71E+02 U TG 09 455089005 7/17/2018 Cs-134 4.87E+00 7.11E+00 2.32E+01 U TG 09 455089005 7/17/2018 Cs-137 9.24E+00 1.44E+01 1.97E+01 U TG 09 455089005 7/17/2018 Fe-59 -3.75E+00 1.32E+01 4.36E+01 U TG 09 455089005 7/17/2018 I-131 -5.17E+00 1.02E+01 3.02E+01 U TG 09 455089005 7/17/2018 K-40 4.38E+03 3.18E+02 2.16E+02 TG 09 455089005 7/17/2018 La-140 -1.91E+01 1.08E+01 2.73E+01 U TG 09 455089005 7/17/2018 Mn-54 -1.43E+00 5.70E+00 1.79E+01 U TG 09 455089005 7/17/2018 Nb-95 4.10E+00 9.18E+00 2.19E+01 U TG 09 455089005 7/17/2018 Ru-103 3.46E+00 5.73E+00 1.92E+01 U TG 09 455089005 7/17/2018 Ru-106 4.88E+01 5.64E+01 1.86E+02 U TG 09 455089005 7/17/2018 Sb-124 -1.41E+01 1.34E+01 3.80E+01 U TG 09 455089005 7/17/2018 Sb-125 -3.42E+01 2.77E+01 4.74E+01 U TG 09 455089005 7/17/2018 Se-75 1.21E-01 7.59E+00 2.37E+01 U TG 09 455089005 7/17/2018 Th-228 0.00E+00 2.73E+01 4.29E+01 U TG 09 455089005 7/17/2018 Zn-65 -1.36E+01 1.56E+01 4.24E+01 U TG 09 455089005 7/17/2018 Zr-95 9.41E+00 1.04E+01 3.41E+01 U TG 09 457581005 8/14/2018 Ac-228 1.64E+01 3.58E+01 6.39E+01 U TG 09 457581005 8/14/2018 Ag-108m -2.11E+00 3.15E+00 8.94E+00 U TG 09 457581005 8/14/2018 Ag-110m 9.91E+00 5.47E+00 1.79E+01 U -212-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 09 457581005 8/14/2018 Ba-140 1.38E+01 1.78E+01 6.03E+01 U TG 09 457581005 8/14/2018 Be-7 3.08E+03 1.70E+02 9.75E+01 TG 09 457581005 8/14/2018 Ce-141 -2.54E+01 9.77E+00 1.74E+01 U TG 09 457581005 8/14/2018 Ce-144 -7.78E+00 2.04E+01 6.50E+01 U TG 09 457581005 8/14/2018 Co-57 -2.33E+00 2.62E+00 8.05E+00 U TG 09 457581005 8/14/2018 Co-58 6.59E+00 4.19E+00 1.38E+01 U TG 09 457581005 8/14/2018 Co-60 -3.30E+00 3.97E+00 1.20E+01 U TG 09 457581005 8/14/2018 Cr-51 2.20E+01 3.35E+01 1.16E+02 U TG 09 457581005 8/14/2018 Cs-134 2.07E+00 4.57E+00 1.50E+01 U TG 09 457581005 8/14/2018 Cs-137 -1.25E+00 3.41E+00 1.08E+01 U TG 09 457581005 8/14/2018 Fe-59 -1.40E+01 8.52E+00 2.31E+01 U TG 09 457581005 8/14/2018 I-131 -7.45E+00 6.92E+00 2.16E+01 U TG 09 457581005 8/14/2018 K-40 5.51E+03 3.55E+02 1.06E+02 TG 09 457581005 8/14/2018 La-140 -4.53E+00 5.70E+0 0 1.64E+01 U TG 09 457581005 8/14/2018 Mn-54 -2.45E+00 4.17E+00 1.27E+01 U TG 09 457581005 8/14/2018 Nb-95 -6.20E+00 4.53E+00 1.26E+01 U TG 09 457581005 8/14/2018 Ru-103 -5.54E-01 3.53E+00 1.16E+01 U TG 09 457581005 8/14/2018 Ru-106 6.11E+01 3.39E+01 1.12E+02 U TG 09 457581005 8/14/2018 Sb-124 1.10E+01 6.90E+00 2.55E+01 U TG 09 457581005 8/14/2018 Sb-125 -1.20E+00 9.89E+00 2.96E+01 U TG 09 457581005 8/14/2018 Se-75 -1.82E+00 4.99E+00 1.53E+01 U TG 09 457581005 8/14/2018 Th-228 1.28E+01 1.33E+01 1.86E+01 U TG 09 457581005 8/14/2018 Zn-65 4.46E+00 8.88E+00 3.05E+01 U TG 09 457581005 8/14/2018 Zr-95 1.09E+00 5.92E+00 1.93E+01 U TG 09 459446002 9/12/2018 Ac-228 1.13E+02 6.21E+01 1.39E+02 U TG 09 459446002 9/12/2018 Ag-108m 4.78E+00 7.25E+00 2.41E+01 U TG 09 459446002 9/12/2018 Ag-110m 1.28E+00 1.09E+01 3.65E+01 U TG 09 459446002 9/12/2018 Ba-140 3.65E+01 4.16E+01 1.38E+02 U TG 09 459446002 9/12/2018 Be-7 1.16E+03 1.68E+02 2.24E+02 TG 09 459446002 9/12/2018 Ce-141 -5.60E+01 2.15E+01 3.88E+01 U TG 09 459446002 9/12/2018 Ce-144 -4.25E+01 4.80E+01 1.42E+02 U TG 09 459446002 9/12/2018 Co-57 7.52E-01 6.29E+00 2.00E+01 U TG 09 459446002 9/12/2018 Co-58 -6.73E+00 8.05E+00 2.47E+01 U TG 09 459446002 9/12/2018 Co-60 1.99E+01 9.87E+00 3.42E+01 U TG 09 459446002 9/12/2018 Cr-51 -9.96E+01 9.34E+01 2.39E+02 U TG 09 459446002 9/12/2018 Cs-134 -1.17E+00 9.46E+00 2.75E+01 U TG 09 459446002 9/12/2018 Cs-137 3.44E-01 9.61E+00 2.88E+01 U TG 09 459446002 9/12/2018 Fe-59 1.88E+00 1.66E+01 5.45E+01 U TG 09 459446002 9/12/2018 I-131 5.76E+00 1.56E+01 5.19E+01 U TG 09 459446002 9/12/2018 K-40 2.63E+03 2.77E+02 2.89E+02 TG 09 459446002 9/12/2018 La-140 -1.10E+01 1.39E+01 4.15E+01 U TG 09 459446002 9/12/2018 Mn-54 9.74E+00 8.65E+00 2.99E+01 U TG 09 459446002 9/12/2018 Nb-95 -5.43E+00 1.09E+01 3.02E+01 U TG 09 459446002 9/12/2018 Ru-103 -7.88E+00 8.24E+00 2.42E+01 U TG 09 459446002 9/12/2018 Ru-106 -9.55E+01 8.46E+01 2.05E+02 U TG 09 459446002 9/12/2018 Sb-124 1.06E+01 1.86E+01 6.54E+01 U TG 09 459446002 9/12/2018 Sb-125 -1.62E+01 2.08E+01 6.36E+01 U TG 09 459446002 9/12/2018 Se-75 -1.55E+01 1.26E+01 3.16E+01 U TG 09 459446002 9/12/2018 Th-228 0.00E+00 3.56E+01 6.27E+01 U TG 09 459446002 9/12/2018 Zn-65 1.63E+01 2.04E+01 6.27E+01 U -213-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 09 459446002 9/12/2018 Zr-95 -1.32E+01 1.50E+01 4.63E+01 U TG 09 461676002 10/10/2018 Ac-228 -1.60E+01 3.26E+01 7.72E+01 U TG 09 461676002 10/10/2018 Ag-108m -5.20E-01 4.24E+00 1.41E+01 U TG 09 461676002 10/10/2018 Ag-110m 3.93E+00 6.33E+00 2.08E+01 U TG 09 461676002 10/10/2018 Ba-140 6.68E+01 4.96E+01 7.41E+01 U TG 09 461676002 10/10/2018 Be-7 1.69E+03 1.32E+02 1.51E+02 TG 09 461676002 10/10/2018 Ce-141 4.44E+00 9.07E+00 2.66E+01 U TG 09 461676002 10/10/2018 Ce-144 -5.18E+01 3.36E+01 9.49E+01 U TG 09 461676002 10/10/2018 Co-57 -2.80E+00 4.19E+00 1.29E+01 U TG 09 461676002 10/10/2018 Co-58 1.24E+01 5.93E+00 1.87E+01 U TG 09 461676002 10/10/2018 Co-60 4.01E+00 5.66E+00 1.95E+01 U TG 09 461676002 10/10/2018 Cr-51 -5.69E+01 4.39E+01 1.36E+02 U TG 09 461676002 10/10/2018 Cs-134 7.11E+00 6.05E+00 1.99E+01 U TG 09 461676002 10/10/2018 Cs-137 0.00E+00 7.81E+00 1.66E+01 U TG 09 461676002 10/10/2018 Fe-59 -1.86E+00 1.00E+01 3.35E+01 U TG 09 461676002 10/10/2018 I-131 -5.40E+00 7.65E+00 2.48E+01 U TG 09 461676002 10/10/2018 K-40 2.68E+03 2.40E+02 1.77E+02 TG 09 461676002 10/10/2018 La-140 -5.19E+00 8.12E+00 2.51E+01 U TG 09 461676002 10/10/2018 Mn-54 -1.55E+00 4.95E+00 1.56E+01 U TG 09 461676002 10/10/2018 Nb-95 -5.34E-01 5.22E+00 1.67E+01 U TG 09 461676002 10/10/2018 Ru-103 6.12E+00 5.06E+00 1.69E+01 U TG 09 461676002 10/10/2018 Ru-106 5.11E+00 4.78E+01 1.57E+02 U TG 09 461676002 10/10/2018 Sb-124 -1.65E+01 1.15E+01 3.01E+01 U TG 09 461676002 10/10/2018 Sb-125 1.05E+01 1.41E+01 4.76E+01 U TG 09 461676002 10/10/2018 Se-75 -1.62E+00 6.53E+00 2.21E+01 U TG 09 461676002 10/10/2018 Th-228 1.66E+01 2.03E+01 2.99E+01 U TG 09 461676002 10/10/2018 Zn-65 2.67E-01 1.11E+01 3.76E+01 U TG 09 461676002 10/10/2018 Zr-95 -3.97E+00 9.74E+00 3.07E+01 U TG 10 451320003 5/22/2018 Ac-228 1.17E+01 1.89E+01 4.92E+01 U TG 10 451320003 5/22/2018 Ag-108m 1.99E+00 2.78E+00 9.14E+00 U TG 10 451320003 5/22/2018 Ag-110m -6.93E+00 4.31E+00 1.20E+01 U TG 10 451320003 5/22/2018 Ba-140 -1.27E+01 1.78E+01 5.43E+01 U TG 10 451320003 5/22/2018 Be-7 6.11E+02 7.18E+01 7.79E+01 TG 10 451320003 5/22/2018 Ce-141 -2.02E+00 4.90E+00 1.48E+01 U TG 10 451320003 5/22/2018 Ce-144 2.22E+01 1.66E+01 5.57E+01 U TG 10 451320003 5/22/2018 Co-57 2.80E-01 1.97E+00 6.79E+00 U TG 10 451320003 5/22/2018 Co-58 -1.18E+00 3.17E+00 1.04E+01 U TG 10 451320003 5/22/2018 Co-60 6.58E-01 2.95E+00 9.75E+00 U TG 10 451320003 5/22/2018 Cr-51 1.46E+01 2.91E+01 9.69E+01 U TG 10 451320003 5/22/2018 Cs-134 6.47E+00 3.73E+00 1.06E+01 U TG 10 451320003 5/22/2018 Cs-137 1.32E+02 1.09E+01 1.08E+01 TG 10 451320003 5/22/2018 Fe-59 4.91E+00 6.44E+00 2.19E+01 U TG 10 451320003 5/22/2018 I-131 -2.36E+00 6.75E+00 2.18E+01 U TG 10 451320003 5/22/2018 K-40 2.34E+03 1.58E+02 6.13E+01 TG 10 451320003 5/22/2018 La-140 5.11E+00 4.51E+00 1.47E+01 U TG 10 451320003 5/22/2018 Mn-54 -1.26E+00 3.02E+00 9.85E+00 U TG 10 451320003 5/22/2018 Nb-95 2.34E+00 2.92E+00 1.01E+01 U TG 10 451320003 5/22/2018 Ru-103 -2.91E+00 3.28E+00 9.89E+00 U TG 10 451320003 5/22/2018 Ru-106 -2.89E+01 2.78E+01 8.03E+01 U -214-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 10 451320003 5/22/2018 Sb-124 -6.23E-01 6.22E+00 2.07E+01 U TG 10 451320003 5/22/2018 Sb-125 -1.12E+01 8.79E+00 2.58E+01 U TG 10 451320003 5/22/2018 Se-75 -4.56E+00 4.60E+00 1.18E+01 U TG 10 451320003 5/22/2018 Th-228 1.18E+01 8.79E+00 1.91E+01 U TG 10 451320003 5/22/2018 Zn-65 5.33E+00 6.60E+00 2.02E+01 U TG 10 451320003 5/22/2018 Zr-95 -3.18E+00 5.25E+00 1.69E+01 U TG 10 453142006 6/19/2018 Ac-228 2.91E+01 4.35E+01 7.74E+01 U TG 10 453142006 6/19/2018 Ag-108m -1.29E+00 3.63E+00 1.20E+01 U TG 10 453142006 6/19/2018 Ag-110m 3.63E+00 6.41E+00 1.89E+01 U TG 10 453142006 6/19/2018 Ba-140 6.12E+00 2.21E+01 7.38E+01 U TG 10 453142006 6/19/2018 Be-7 7.53E+02 9.61E+01 1.18E+02 TG 10 453142006 6/19/2018 Ce-141 1.10E+01 1.36E+01 1.92E+01 U TG 10 453142006 6/19/2018 Ce-144 1.55E+01 2.30E+01 7.50E+01 U TG 10 453142006 6/19/2018 Co-57 -3.41E-01 3.00E+00 9.75E+00 U TG 10 453142006 6/19/2018 Co-58 8.20E+00 5.15E+00 1.67E+01 U TG 10 453142006 6/19/2018 Co-60 -6.37E-01 4.09E+00 1.34E+01 U TG 10 453142006 6/19/2018 Cr-51 -2.32E+01 3.47E+01 1.15E+02 U TG 10 453142006 6/19/2018 Cs-134 7.14E+00 8.62E+00 1.66E+01 U TG 10 453142006 6/19/2018 Cs-137 -1.31E+00 7.60E+00 1.60E+01 U TG 10 453142006 6/19/2018 Fe-59 -4.57E+00 8.69E+00 2.82E+01 U TG 10 453142006 6/19/2018 I-131 2.88E+00 7.81E+00 2.42E+01 U TG 10 453142006 6/19/2018 K-40 5.45E+03 3.45E+02 1.53E+02 TG 10 453142006 6/19/2018 La-140 -3.32E+00 7.21E+00 2.25E+01 U TG 10 453142006 6/19/201 8 Mn-54 -1.43E+00 4.66E+00 1.47E+01 U TG 10 453142006 6/19/2018 Nb-95 5.14E+00 4.96E+00 1.63E+01 U TG 10 453142006 6/19/2018 Ru-103 2.36E+00 3.78E+00 1.28E+01 U TG 10 453142006 6/19/2018 Ru-106 1.10E+02 4.72E+01 1.45E+02 U TG 10 453142006 6/19/2018 Sb-124 -6.77E-01 1.09E+01 3.54E+01 U TG 10 453142006 6/19/2018 Sb-125 -7.81E+00 1.08E+01 3.47E+01 U TG 10 453142006 6/19/2018 Se-75 -2.15E+00 5.88E+00 1.81E+01 U TG 10 453142006 6/19/2018 Th-228 -2.37E+01 1.24E+01 2.79E+01 U TG 10 453142006 6/19/2018 Zn-65 -1.33E+01 1.12E+01 3.40E+01 U TG 10 453142006 6/19/2018 Zr-95 -2.42E+01 9.63E+00 2.04E+01 U TG 10 455089006 7/17/2018 Ac-228 5.78E+00 3.41E+01 5.84E+01 U TG 10 455089006 7/17/2018 Ag-108m -4.09E+00 3.74E+00 1.14E+01 U TG 10 455089006 7/17/2018 Ag-110m 2.62E+00 6.54E+00 2.24E+01 U TG 10 455089006 7/17/2018 Ba-140 2.24E+01 2.13E+01 6.96E+01 U TG 10 455089006 7/17/2018 Be-7 1.16E+03 1.03E+02 1.22E+02 TG 10 455089006 7/17/2018 Ce-141 -1.30E+00 6.43E+00 2.18E+01 U TG 10 455089006 7/17/2018 Ce-144 -1.64E+01 2.27E+01 7.54E+01 U TG 10 455089006 7/17/2018 Co-57 -3.99E+00 3.06E+00 9.75E+00 U TG 10 455089006 7/17/2018 Co-58 3.58E+00 4.66E+00 1.51E+01 U TG 10 455089006 7/17/2018 Co-60 6.19E+00 5.16E+00 1.75E+01 U TG 10 455089006 7/17/2018 Cr-51 -4.77E+01 3.63E+01 1.10E+02 U TG 10 455089006 7/17/2018 Cs-134 5.98E+00 5.44E+00 1.75E+01 U TG 10 455089006 7/17/2018 Cs-137 1.08E+01 5.83E+00 1.81E+01 U TG 10 455089006 7/17/2018 Fe-59 2.53E+00 9.68E+00 2.90E+01 U TG 10 455089006 7/17/2018 I-131 4.12E+00 7.03E+00 2.34E+01 U TG 10 455089006 7/17/2018 K-40 3.40E+03 2.34E+02 1.36E+02 -215-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 10 455089006 7/17/2018 La-140 -3.91E+00 6.95E+00 2.16E+01 U TG 10 455089006 7/17/2018 Mn-54 1.29E+00 4.60E+00 1.58E+01 U TG 10 455089006 7/17/2018 Nb-95 -1.05E+01 7.27E+00 1.59E+01 U TG 10 455089006 7/17/2018 Ru-103 -2.05E+00 4.49E+00 1.43E+01 U TG 10 455089006 7/17/2018 Ru-106 -4.64E+01 4.27E+01 1.27E+02 U TG 10 455089006 7/17/2018 Sb-124 1.41E+01 1.04E+01 3.56E+01 U TG 10 455089006 7/17/2018 Sb-125 -1.14E+00 1.13E+01 3.68E+01 U TG 10 455089006 7/17/2018 Se-75 -3.44E+00 5.41E+00 1.76E+01 U TG 10 455089006 7/17/2018 Th-228 5.43E-01 1.19E+01 2.82E+01 U TG 10 455089006 7/17/2018 Zn-65 1.39E+01 9.96E+00 3.36E+01 U TG 10 455089006 7/17/2018 Zr-95 -1.15E+01 8.65E+00 2.43E+01 U TG 10 457581006 8/14/2018 Ac-228 0.00E+00 4.54E+01 6.30E+01 U TG 10 457581006 8/14/2018 Ag-108m -3.04E+00 4.89E+00 1.58E+01 U TG 10 457581006 8/14/2018 Ag-110m -7.57E+00 8.16E+00 2.36E+01 U TG 10 457581006 8/14/2018 Ba-140 -1.39E+01 2.71E+01 8.63E+01 U TG 10 457581006 8/14/2018 Be-7 5.28E+03 2.91E+02 1.50E+02 TG 10 457581006 8/14/2018 Ce-141 1.24E+00 8.22E+00 2.66E+01 U TG 10 457581006 8/14/2018 Ce-144 3.06E+01 3.44E+01 1.04E+02 U TG 10 457581006 8/14/2018 Co-57 6.39E-01 3.77E+00 1.23E+01 U TG 10 457581006 8/14/2018 Co-58 -1.29E+00 5.54E+00 1.75E+01 U TG 10 457581006 8/14/2018 Co-60 -6.04E+00 6.02E+00 1.76E+01 U TG 10 457581006 8/14/2018 Cr-51 -3.64E+00 5.44E+01 1.85E+02 U TG 10 457581006 8/14/2018 Cs-134 2.56E+00 5.38E+00 1.79E+01 U TG 10 457581006 8/14/2018 Cs-137 3.80E+02 2.57E+01 1.41E+01 TG 10 457581006 8/14/2018 Fe-59 4.96E+00 1.11E+01 3.87E+01 U TG 10 457581006 8/14/2018 I-131 1.64E+00 1.04E+01 3.54E+01 U TG 10 457581006 8/14/2018 K-40 3.64E+03 2.93E+02 1.49E+02 TG 10 457581006 8/14/2018 La-140 -1.05E+01 9.03E+00 2.40E+01 U TG 10 457581006 8/14/2018 Mn-54 6.72E+00 5.09E+00 1.72E+01 U TG 10 457581006 8/14/2018 Nb-95 -9.81E+00 9.00E+00 1.65E+01 U TG 10 457581006 8/14/2018 Ru-103 -1.64E-01 4.63E+00 1.54E+01 U TG 10 457581006 8/14/2018 Ru-106 -1.93E+01 4.78E+01 1.52E+02 U TG 10 457581006 8/14/2018 Sb-124 1.48E+01 1.36E+01 4.81E+01 U TG 10 457581006 8/14/2018 Sb-125 2.20E+00 1.48E+01 4.99E+01 U TG 10 457581006 8/14/2018 Se-75 -1.90E+00 7.74E+00 2.38E+01 U TG 10 457581006 8/14/2018 Th-228 -1.34E+01 1.30E+01 3.33E+01 U TG 10 457581006 8/14/2018 Zn-65 -1.92E+01 1.59E+01 4.14E+01 U TG 10 457581006 8/14/2018 Zr-95 0.00E+00 4.59E+01 2.52E+01 U TG 10 459446003 9/12/2018 Ac-228 1.02E+02 7.68E+01 1.46E+02 U TG 10 459446003 9/12/2018 Ag-108m -2.98E+00 6.42E+00 2.10E+01 U TG 10 459446003 9/12/2018 Ag-110m 0.00E+00 1.90E+01 4.10E+01 U TG 10 459446003 9/12/2018 Ba-140 1.77E+00 3.86E+01 1.29E+02 U TG 10 459446003 9/12/2018 Be-7 8.17E+02 1.83E+02 2.11E+02 TG 10 459446003 9/12/2018 Ce-141 1.13E+01 1.21E+01 3.97E+01 U TG 10 459446003 9/12/2018 Ce-144 -2.58E+01 4.52E+01 1.41E+02 U TG 10 459446003 9/12/2018 Co-57 9.27E+00 6.38E+00 2.06E+01 U TG 10 459446003 9/12/2018 Co-58 -6.53E+00 8.60E+00 2.58E+01 U TG 10 459446003 9/12/2018 Co-60 4.32E+00 7.33E+00 2.61E+01 U TG 10 459446003 9/12/2018 Cr-51 -8.07E+01 6.49E+01 1.99E+02 U -216-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TG 10 459446003 9/12/2018 Cs-134 9.08E+00 1.02E+01 3.44E+01 U TG 10 459446003 9/12/2018 Cs-137 -1.20E+01 9.19E+00 2.61E+01 U TG 10 459446003 9/12/2018 Fe-59 -6.12E+00 1.61E+01 4.88E+01 U TG 10 459446003 9/12/2018 I-131 2.29E+01 1.57E+01 5.35E+01 U TG 10 459446003 9/12/2018 K-40 3.22E+03 3.39E+02 3.05E+02 TG 10 459446003 9/12/2018 La-140 -2.83E+00 1.25E+01 4.04E+01 U TG 10 459446003 9/12/2018 Mn-54 3.25E+00 7.51E+00 2.52E+01 U TG 10 459446003 9/12/2018 Nb-95 9.28E+00 9.89E+00 3.07E+01 U TG 10 459446003 9/12/2018 Ru-103 1.23E+01 8.25E+00 2.83E+01 U TG 10 459446003 9/12/2018 Ru-106 -2.38E+01 7.16E+01 2.31E+02 U TG 10 459446003 9/12/2018 Sb-124 -2.01E-01 2.40E+01 6.99E+01 U TG 10 459446003 9/12/2018 Sb-125 -5.39E+00 1.98E+01 6.57E+01 U TG 10 459446003 9/12/2018 Se-75 8.90E-01 9.65E+00 3.03E+01 U TG 10 459446003 9/12/2018 Th-228 3.43E+01 2.28E+01 4.76E+01 U TG 10 459446003 9/12/2018 Zn-65 -1.18E+01 1.97E+01 5.47E+01 U TG 10 459446003 9/12/2018 Zr-95 3.83E+00 1.46E+01 4.86E+01 U TG 10 461676003 10/10/2018 Ac-228 1.36E+01 5.37E+01 1.15E+02 U TG 10 461676003 10/10/2018 Ag-108m 4.40E+00 5.78E+00 1.90E+01 U TG 10 461676003 10/10/2018 Ag-110m -2.47E+00 8.61E+00 2.81E+01 U TG 10 461676003 10/10/2018 Ba-140 -4.11E+01 3.03E+01 8.60E+01 U TG 10 461676003 10/10/2018 Be-7 3.76E+03 2.28E+02 1.64E+02 TG 10 461676003 10/10/2018 Ce-141 2.67E+00 1.57E+01 2.97E+01 U TG 10 461676003 10/10/2018 Ce-144 -1.30E+00 3.68E+01 1.15E+02 U TG 10 461676003 10/10/2018 Co-57 -6.20E+00 5.13E+00 1.50E+01 U TG 10 461676003 10/10/2018 Co-58 3.26E+00 6.44E+00 2.19E+01 U TG 10 461676003 10/10/2018 Co-60 7.95E+00 6.55E+00 2.21E+01 U TG 10 461676003 10/10/2018 Cr-51 5.30E+01 5.57E+01 1.85E+02 U TG 10 461676003 10/10/2018 Cs-134 -5.12E+00 7.22E+00 2.30E+01 U TG 10 461676003 10/10/2018 Cs-137 4.87E+01 1.22E+01 2.05E+01 M TG 10 461676003 10/10/2018 Fe-59 -9.05E+00 1.39E+01 4.31E+01 U TG 10 461676003 10/10/2018 I-131 -1.32E+01 1.39E+01 3.12E+01 U TG 10 461676003 10/10/2018 K-40 3.14E+03 2.79E+02 2.31E+02 TG 10 461676003 10/10/2018 La-140 -8.55E+00 1.05E+01 3.25E+01 U TG 10 461676003 10/10/2018 Mn-54 5.80E+00 6.24E+00 2.12E+01 U TG 10 4616 76003 10/10/2018 Nb-95 2.70E+00 6.68E+00 2.27E+01 U TG 10 461676003 10/10/2018 Ru-103 -3.81E+00 5.92E+00 1.83E+01 U TG 10 461676003 10/10/2018 Ru-106 1.60E+01 5.74E+01 1.84E+02 U TG 10 461676003 10/10/2018 Sb-124 -3.87E+00 1.48E+01 4.80E+01 U TG 10 461676003 10/10/2018 Sb-125 -6.14E+00 1.72E+01 5.52E+01 U TG 10 461676003 10/10/2018 Se-75 1.40E+01 8.62E+00 2.79E+01 U TG 10 461676003 10/10/2018 Th-228 -9.35E+00 1.87E+01 4.73E+01 U TG 10 461676003 10/10/2018 Zn-65 1.50E+01 1.48E+01 4.96E+01 U TG 10 461676003 10/10/2018 Zr-95 1.98E+01 1.42E+01 3.69E+01 U -217-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 441641001 1/11/2018 Ac-228 4.35E+00 4.89E+00 1.06E+01 U TM 15 441641001 1/11/2018 Ag-108m 5.34E-01 6.31E-01 1.81E+00 U TM 15 441641001 1/11/2018 Ag-110m 3.28E-01 1.12E+00 3.18E+00 U TM 15 441641001 1/11/2018 Ba-140 4.47E+00 2.94E+00 9.66E+00 U TM 15 441641001 1/11/2018 Be-7 -4.64E+00 5.17E+00 1.68E+01 U TM 15 441641001 1/11/2018 Ce-141 -1.37E+00 1.11E+00 3.25E+00 U TM 15 441641001 1/11/2018 Ce-144 4.14E+00 4.26E+00 1.33E+01 U TM 15 441641001 1/11/2018 Co-57 -2.08E-01 5.34E-01 1.67E+00 U TM 15 441641001 1/11/2018 Co-58 4.46E-01 7.74E-01 2.24E+00 U TM 15 441641001 1/11/2018 Co-60 1.32E+00 8.58E-01 2.79E+00 U TM 15 441641001 1/11/2018 Cr-51 -2.85E-02 5.52E+00 1.80E+01 U TM 15 441641001 1/11/2018 Cs-134 8.09E-01 7.75E-01 2.46E+00 U TM 15 441641001 1/11/2018 Cs-137 -4.48E-01 6.60E-01 2.11E+00 U TM 15 441641001 1/11/2018 Fe-59 2.22E+00 1.75E+00 5.80E+00 U TM 15 441641001 1/11/2018 I-131 -1.04E-01 2.33E-01 7.82E-01 U TM 15 441641001 1/11/2018 K-40 2.04E+03 1.07E+02 2.28E+01 TM 15 441641001 1/11/2018 La-140 2.81E-02 9.36E-01 3.02E+00 U TM 15 441641001 1/11/2018 Mn-54 3.18E-01 6.75E-01 2.21E+00 U TM 15 441641001 1/11/2018 Nb-95 1.56E+00 8.06E-01 2.50E+00 U TM 15 441641001 1/11/2018 Ru-103 1.08E+00 7.04E-01 2.08E+00 U TM 15 441641001 1/11/2018 Ru-106 8.72E+00 5.94E+00 1.94E+01 U TM 15 441641001 1/11/2018 Sb-124 1.47E-02 1.41E+00 4.71E+00 U TM 15 441641001 1/11/2018 Sb-125 -2.79E+00 1.87E+00 5.32E+00 U TM 15 441641001 1/11/2018 Se-75 1.28E-01 7.70E-01 2.56E+00 U TM 15 441641001 1/11/2018 Th-228 3.46E+00 2.26E+00 4.15E+00 U TM 15 441641001 1/11/2018 Zn-65 -2.13E+00 1.92E+00 5.97E+00 U TM 15 441641001 1/11/2018 Zr-95 1.50E+00 1.21E+00 3.94E+00 U TM 15 442963001 1/31/2018 Ac-228 -6.12E+00 3.46E+00 7.60E+00 U TM 15 442963001 1/31/2018 Ag-108m -9.04E-02 4.12E-01 1.35E+00 U TM 15 442963001 1/31/2018 Ag-110m -1.34E+00 7.73E-01 2.25E+00 U TM 15 442963001 1/31/2018 Ba-140 -2.79E+00 3.25E+00 1.01E+01 U TM 15 442963001 1/31/2018 Be-7 8.18E+00 4.86E+00 1.53E+01 U TM 15 442963001 1/31/2018 Ce-141 1.52E-02 1.00E+00 2.94E+00 U TM 15 442963001 1/31/2018 Ce-144 -5.40E+00 3.44E+00 9.98E+00 U TM 15 442963001 1/31/2018 Co-57 1.54E-01 4.16E-01 1.34E+00 U TM 15 442963001 1/31/2018 Co-58 6.63E-01 5.45E-01 1.83E+00 U TM 15 442963001 1/31/2018 Co-60 4.72E-01 6.06E-01 2.00E+00 U TM 15 442963001 1/31/2018 Cr-51 1.27E+00 4.94E+00 1.67E+01 U TM 15 442963001 1/31/2018 Cs-134 7.35E-01 5.80E-01 1.75E+00 U TM 15 442963001 1/31/2018 Cs-137 7.24E-01 5.80E-01 1.84E+00 U TM 15 442963001 1/31/2018 Fe-59 -2.86E-01 1.27E+00 4.16E+00 U TM 15 442963001 1/31/2018 I-131 -1.62E-01 1.88E-01 5.52E-01 U TM 15 442963001 1/31/2018 K-40 2.00E+03 9.40E+01 1.40E+01 TM 15 442963001 1/31/2018 La-140 -2.01E+00 1.04E+00 2.57E+00 U TM 15 442963001 1/31/2018 Mn-54 3.54E-01 4.99E-01 1.70E+00 U TM 15 442963001 1/31/2018 Nb-95 8.12E-01 6.37E-01 2.00E+00 U TM 15 442963001 1/31/2018 Ru-103 -1.17E+00 6.94E-01 1.75E+00 U TM 15 442963001 1/31/2018 Ru-106 4.94E+00 4.46E+00 1.43E+01 U TM 15 442963001 1/31/2018 Sb-124 -5.06E-01 9.59E-01 3.12E+00 U TM 15 442963001 1/31/2018 Sb-125 6.60E-01 1.30E+00 4.32E+00 U -218-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 442963001 1/31/2018 Se-75 6.58E-01 6.47E-01 2.18E+00 U TM 15 442963001 1/31/2018 Th-228 1.26E-02 2.01E+00 3.32E+00 U TM 15 442963001 1/31/2018 Zn-65 -1.63E+00 1.46E+00 3.89E+00 U TM 15 442963001 1/31/2018 Zr-95 3.73E-01 9.82E-01 3.14E+00 U TM 15 444986001 2/28/2018 Ac-228 1.60E+00 4.62E+00 9.27E+00 U TM 15 444986001 2/28/2018 Ag-108m -3.56E-01 4.92E-01 1.59E+00 U TM 15 444986001 2/28/2018 Ag-110m 2.53E-01 8.68E-01 2.97E+00 U TM 15 444986001 2/28/2018 Ba-140 5.92E+00 3.71E+00 8.84E+00 U TM 15 444986001 2/28/2018 Be-7 -2.11E+00 4.63E+00 1.51E+01 U TM 15 444986001 2/28/2018 Ce-141 -2.05E+00 1.51E+00 3.10E+00 U TM 15 444986001 2/28/2018 Ce-144 -2.31E+00 3.82E+00 1.21E+01 U TM 15 444986001 2/28/2018 Co-57 2.70E-01 4.87E-01 1.59E+00 U TM 15 444986001 2/28/2018 Co-58 -8.57E-01 6.79E-01 1.96E+00 U TM 15 444986001 2/28/2018 Co-60 -8.13E-01 7.81E-01 2.29E+00 U TM 15 444986001 2/28/2018 Cr-51 -6.76E+00 5.48E+00 1.74E+01 U TM 15 444986001 2/28/2018 Cs-134 2.13E+00 8.16E-01 2.15E+00 U TM 15 444986001 2/28/2018 Cs-137 2.67E+00 1.33E+00 1.90E+00 UI M TM 15 444986001 2/28/2018 Fe-59 8.28E-01 1.41E+00 4.75E+00 U TM 15 444986001 2/28/2018 I-131 -2.77E-01 1.52E-01 4.40E-01 U TM 15 444986001 2/28/2018 K-40 1.82E+03 1.06E+02 1.85E+01 TM 15 444986001 2/28/2018 La-140 3.51E-01 9.15E-01 3.01E+00 U TM 15 444986001 2/28/2018 Mn-54 -1.93E+00 1.00E+00 1.79E+00 U TM 15 444986001 2/28/2018 Nb-95 4.97E-01 5.97E-01 1.93E+00 U TM 15 444986001 2/28/2018 Ru-103 -4.19E-01 6.03E-01 1.93E+00 U TM 15 444986001 2/28/2018 Ru-106 5.01E+00 5.38E+00 1.76E+01 U TM 15 444986001 2/28/2018 Sb-124 -2.47E+00 1.39E+00 3.49E+00 U TM 15 444986001 2/28/2018 Sb-125 1.38E+00 1.48E+00 4.96E+00 U TM 15 444986001 2/28/2018 Se-75 -1.71E+00 8.90E-01 2.33E+00 U TM 15 444986001 2/28/2018 Th-228 -8.20E-01 1.71E+00 4.01E+00 U TM 15 444986001 2/28/2018 Zn-65 2.73E+00 1.67E+00 5.44E+00 U TM 15 444986001 2/28/2018 Zr-95 -2.27E-01 1.15E+00 3.67E+00 U TM 15 446140001 3/15/2018 Ac-228 1.03E+00 4.24E+00 6.28E+00 U TM 15 446140001 3/15/2018 Ag-108m -6.82E-01 4.46E-01 1.32E+00 U TM 15 446140001 3/15/2018 Ag-110m -1.08E+00 6.78E-01 2.01E+00 U TM 15 446140001 3/15/2018 Ba-140 1.14E+00 2.19E+00 7.18E+00 U TM 15 446140001 3/15/2018 Be-7 -4.71E+00 3.98E+00 1.22E+01 U TM 15 446140001 3/15/2018 Ce-141 -2.71E+00 1.35E+00 2.62E+00 U TM 15 446140001 3/15/2018 Ce-144 9.67E-01 3.09E+00 9.92E+00 U TM 15 446140001 3/15/2018 Co-57 5.80E-02 4.08E-01 1.31E+00 U TM 15 446140001 3/15/2018 Co-58 2.29E-01 5.23E-01 1.59E+00 U TM 15 446140001 3/15/2018 Co-60 -4.60E-01 5.26E-01 1.62E+00 U TM 15 446140001 3/15/2018 Cr-51 -1.31E+00 4.18E+00 1.40E+01 U TM 15 446140001 3/15/2018 Cs-134 -9.52E-03 5.27E-01 1.79E+00 U TM 15 446140001 3/15/2018 Cs-137 5.35E+00 1.04E+00 1.63E+00 M TM 15 446140001 3/15/2018 Fe-59 -8.21E-01 1.17E+00 3.75E+00 U TM 15 446140001 3/15/2018 I-131 7.36E-03 1.76E-01 5.82E-01 U TM 15 446140001 3/15/2018 K-40 1.66E+03 7.95E+01 1.45E+01 TM 15 446140001 3/15/2018 La-140 3.90E-01 8.04E-01 2.62E+00 U TM 15 446140001 3/15/2018 Mn-54 -4.75E-01 4.94E-01 1.59E+00 U -219-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 446140001 3/15/2018 Nb-95 -9.32E-02 5.32E-01 1.67E+00 U TM 15 446140001 3/15/2018 Ru-103 3.36E-02 5.21E-01 1.53E+00 U TM 15 446140001 3/15/2018 Ru-106 3.28E+00 4.31E+00 1.40E+01 U TM 15 446140001 3/15/2018 Sb-124 5.64E-01 9.47E-01 3.26E+00 U TM 15 446140001 3/15/2018 Sb-125 7.92E-01 1.27E+00 4.21E+00 U TM 15 446140001 3/15/2018 Se-75 2.98E-01 5.92E-01 2.02E+00 U TM 15 446140001 3/15/2018 Th-228 -1.02E+00 1.29E+00 3.13E+00 U TM 15 446140001 3/15/2018 Zn-65 1.03E+00 1.32E+00 4.39E+00 U TM 15 446140001 3/15/2018 Zr-95 4.79E-01 9.26E-01 2.96E+00 U TM 15 447996001 4/11/2018 Ac-228 7.32E-01 5.73E+00 9.16E+00 U TM 15 447996001 4/11/2018 Ag-108m -7.19E-01 5.59E-01 1.65E+00 U TM 15 447996001 4/11/2018 Ag-110m -6.28E-01 8.99E-01 2.91E+00 U TM 15 447996001 4/11/2018 Ba-140 1.34E+00 3.06E+00 9.83E+00 U TM 15 447996001 4/11/2018 Be-7 1.76E+00 5.31E+00 1.71E+01 U TM 15 447996001 4/11/2018 Ce-141 -2.67E+00 1.68E+00 3.49E+00 U TM 15 447996001 4/11/2018 Ce-144 1.24E+00 4.06E+00 1.36E+01 U TM 15 447996001 4/11/2018 Co-57 2.76E-01 5.54E-01 1.86E+00 U TM 15 447996001 4/11/2018 Co-58 0.00E+00 1.12E+00 1.97E+00 U TM 15 447996001 4/11/2018 Co-60 -2.82E-01 6.77E-01 2.17E+00 U TM 15 447996001 4/11/2018 Cr-51 -5.92E+00 5.53E+00 1.70E+01 U TM 15 447996001 4/11/2018 Cs-134 -2.20E-01 9.04E-01 2.20E+00 U TM 15 447996001 4/11/2018 Cs-137 6.81E+00 1.50E+00 2.01E+00 M TM 15 447996001 4/11/2018 Fe-59 1.35E+00 1.59E+00 5.29E+00 U TM 15 447996001 4/11/2018 I-131 1.36E-01 2.28E-01 7.82E-01 U TM 15 447996001 4/11/2018 K-40 1.95E+03 9.42E+01 1.84E+01 TM 15 447996001 4/11/2018 La-140 1.51E+00 9.21E-01 3.02E+00 U TM 15 447996001 4/11/2018 Mn-54 -6.74E-01 8.54E-01 2.03E+00 U TM 15 447996001 4/11/2018 Nb-95 8.01E-01 6.60E-01 2.20E+00 U TM 15 447996001 4/11/2018 Ru-103 -5.02E-01 6.76E-01 2.09E+00 U TM 15 447996001 4/11/2018 Ru-106 3.41E+00 5.47E+00 1.87E+01 U TM 15 447996001 4/11/2018 Sb-124 -8.67E-01 1.19E+00 3.61E+00 U TM 15 447996001 4/11/2018 Sb-125 -1.61E+00 1.65E+00 5.04E+00 U TM 15 447996001 4/11/2018 Se-75 -6.85E-01 8.75E-01 2.47E+00 U TM 15 447996001 4/11/2018 Th-228 -7.55E-01 1.59E+00 3.82E+00 U TM 15 447996001 4/11/2018 Zn-65 -9.21E-01 1.44E+00 4.61E+00 U TM 15 447996001 4/11/2018 Zr-95 -3.25E+00 1.50E+00 3.37E+00 U TM 15 449087001 4/27/2018 Ac-228 6.32E+00 5.42E+00 8.26E+00 U TM 15 449087001 4/27/2018 Ag-108m 1.61E-01 4.69E-01 1.49E+00 U TM 15 449087001 4/27/2018 Ag-110m -7.82E-01 7.87E-01 2.49E+00 U TM 15 449087001 4/27/2018 Ba-140 -3.61E+00 2.85E+00 8.51E+00 U TM 15 449087001 4/27/2018 Be-7 -1.42E-01 4.24E+00 1.39E+01 U TM 15 449087001 4/27/2018 Ce-141 -2.83E+00 1.44E+00 2.76E+00 U TM 15 449087001 4/27/2018 Ce-144 2.38E-01 3.29E+00 1.06E+01 U TM 15 449087001 4/27/2018 Co-57 -7.05E-01 4.62E-01 1.35E+00 U TM 15 449087001 4/27/2018 Co-58 -7.51E-01 5.36E-01 1.63E+00 U TM 15 449087001 4/27/2018 Co-60 -2.13E-01 6.08E-01 1.95E+00 U TM 15 449087001 4/27/2018 Cr-51 6.58E+00 4.86E+00 1.60E+01 U TM 15 449087001 4/27/2018 Cs-134 2.01E-01 5.78E-01 1.98E+00 U TM 15 449087001 4/27/2018 Cs-137 5.47E+00 1.44E+00 1.93E+00 M -220-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 449087001 4/27/2018 Fe-59 -2.03E+00 1.44E+00 4.26E+00 U TM 15 449087001 4/27/2018 I-131 -7.88E-02 2.00E-01 6.49E-01 U TM 15 449087001 4/27/2018 K-40 1.56E+03 8.20E+01 1.77E+01 TM 15 449087001 4/27/2018 La-140 -6.55E-01 1.63E+00 2.64E+00 U TM 15 449087001 4/27/2018 Mn-54 -3.58E-01 6.52E-01 1.83E+00 U TM 15 449087001 4/27/2018 Nb-95 -1.78E-01 5.95E-01 1.65E+00 U TM 15 449087001 4/27/2018 Ru-103 -1.62E-01 5.05E-01 1.63E+00 U TM 15 449087001 4/27/2018 Ru-106 -1.40E+00 4.82E+00 1.53E+01 U TM 15 449087001 4/27/2018 Sb-124 -4.11E-01 1.13E+00 3.71E+00 U TM 15 449087001 4/27/2018 Sb-125 1.41E-01 1.37E+00 4.54E+00 U TM 15 449087001 4/27/2018 Se-75 -6.37E-01 6.28E-01 2.04E+00 U TM 15 449087001 4/27/2018 Th-228 1.76E+00 2.20E+00 2.89E+00 U TM 15 449087001 4/27/2018 Zn-65 1.32E+00 1.40E+00 4.66E+00 U TM 15 449087001 4/27/2018 Zr-95 9.16E-01 1.20E+00 3.45E+00 U TM 15 450029001 5/9/2018 Ac-228 1.13E-01 3.14E+00 7.90E+00 U TM 15 450029001 5/9/2018 Ag-108m -2.27E-01 4.34E-01 1.41E+00 U TM 15 450029001 5/9/2018 Ag-110m 4.93E-03 7.20E-01 2.43E+00 U TM 15 450029001 5/9/2018 Ba-140 -3.33E+00 2.90E+00 8.83E+00 U TM 15 450029001 5/9/2018 Be-7 -3.59E+00 4.57E+00 1.45E+01 U TM 15 450029001 5/9/2018 Ce-141 -4.53E+00 1.73E+00 2.96E+00 U TM 15 450029001 5/9/2018 Ce-144 1.82E+00 3.36E+00 1.08E+01 U TM 15 450029001 5/9/2018 Co-57 6.36E-02 4.40E-01 1.43E+00 U TM 15 450029001 5/9/2018 Co-58 -6.13E-02 4.89E-01 1.66E+00 U TM 15 450029001 5/9/2018 Co-60 -4.92E-02 6.01E-01 1.96E+00 U TM 15 450029001 5/9/2018 Cr-51 2.25E+00 5.36E+00 1.64E+01 U TM 15 450029001 5/9/2018 Cs-134 8.44E-02 6.07E-01 1.93E+00 U TM 15 450029001 5/9/2018 Cs-137 3.57E+00 9.13E-01 1.77E+00 M TM 15 450029001 5/9/2018 Fe-59 1.01E+00 1.38E+00 4.63E+00 U TM 15 450029001 5/9/2018 I-131 2.71E-02 1.21E-01 4.01E-01 U TM 15 450029001 5/9/2018 K-40 1.57E+03 8.40E+01 1.53E+01 TM 15 450029001 5/9/2018 La-140 -3.99E-01 8.07E-01 2.50E+00 U TM 15 450029001 5/9/2018 Mn-54 -2.88E-01 5.03E-01 1.66E+00 U TM 15 450029001 5/9/2018 Nb-95 -1.36E-02 5.77E-01 1.83E+00 U TM 15 450029001 5/9/2018 Ru-103 5.29E-01 5.71E-01 1.70E+00 U TM 15 450029001 5/9/2018 Ru-106 -2.87E+00 4.94E+00 1.55E+01 U TM 15 450029001 5/9/2018 Sb-124 -6.52E-02 1.22E+00 3.89E+00 U TM 15 450029001 5/9/2018 Sb-125 1.88E+00 1.45E+00 4.75E+00 U TM 15 450029001 5/9/2018 Se-75 -4.96E-01 9.00E-01 2.37E+00 U TM 15 450029001 5/9/2018 Th-228 2.99E+00 1.92E+00 3.56E+00 U TM 15 450029001 5/9/2018 Zn-65 -1.73E+00 1.38E+00 4.17E+00 U TM 15 450029001 5/9/2018 Zr-95 2.30E-01 9.50E-01 3.05E+00 U TM 15 451345001 5/23/2018 Ac-228 -1.27E+00 3.01E+00 7.17E+00 U TM 15 451345001 5/23/2018 Ag-108m -2.48E-01 4.13E-01 1.20E+00 U TM 15 451345001 5/23/2018 Ag-110m -9.58E-01 6.96E-01 1.99E+00 U TM 15 451345001 5/23/2018 Ba-140 6.63E-01 2.98E+00 9.83E+00 U TM 15 451345001 5/23/2018 Be-7 4.30E+00 4.15E+00 1.37E+01 U TM 15 451345001 5/23/2018 Ce-141 -1.85E+00 9.90E-01 2.74E+00 U TM 15 451345001 5/23/2018 Ce-144 4.46E+00 3.11E+00 9.59E+00 U TM 15 451345001 5/23/2018 Co-57 -5.59E-01 4.00E-01 1.18E+00 U -221-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 451345001 5/23/2018 Co-58 -6.60E-02 4.91E-01 1.56E+00 U TM 15 451345001 5/23/2018 Co-60 2.46E-01 5.02E-01 1.68E+00 U TM 15 451345001 5/23/2018 Cr-51 -1.38E-01 4.52E+00 1.53E+01 U TM 15 451345001 5/23/2018 Cs-134 2.22E-01 5.09E-01 1.64E+00 U TM 15 451345001 5/23/2018 Cs-137 3.72E+00 1.06E+00 1.54E+00 M TM 15 451345001 5/23/2018 Fe-59 -1.58E+00 1.26E+00 3.89E+00 U TM 15 451345001 5/23/2018 I-131 -3.38E-01 2.78E-01 8.77E-01 U TM 15 451345001 5/23/2018 K-40 1.69E+03 9.16E+01 1.43E+01 TM 15 451345001 5/23/2018 La-140 -5.32E-01 8.51E-01 2.64E+00 U TM 15 451345001 5/23/2018 Mn-54 -4.96E-01 4.64E-01 1.38E+00 U TM 15 451345001 5/23/2018 Nb-95 -3.60E-01 5.13E-01 1.58E+00 U TM 15 451345001 5/23/2018 Ru-103 -4.23E-01 5.47E-01 1.55E+00 U TM 15 451345001 5/23/2018 Ru-106 -5.17E+00 4.55E+00 1.31E+01 U TM 15 451345001 5/23/2018 Sb-124 3.10E-01 1.01E+00 3.32E+00 U TM 15 451345001 5/23/2018 Sb-125 1.60E+00 1.21E+00 3.93E+00 U TM 15 451345001 5/23/2018 Se-75 -1.28E-01 5.80E-01 1.97E+00 U TM 15 451345001 5/23/2018 Th-228 1.78E+00 1.61E+00 3.14E+00 U TM 15 451345001 5/23/2018 Zn-65 6.84E-01 1.14E+00 3.85E+00 U TM 15 451345001 5/23/2018 Zr-95 -4.32E-01 8.68E-01 2.72E+00 U TM 15 452125001 6/6/2018 Ac-228 -4.17E+00 3.70E+00 7.98E+00 U TM 15 452125001 6/6/2018 Ag-108m 2.39E-01 4.64E-01 1.42E+00 U TM 15 452125001 6/6/2018 Ag-110m -5.95E-01 7.63E-01 2.32E+00 U TM 15 452125001 6/6/2018 Ba-140 3.09E+00 2.80E+00 9.27E+00 U TM 15 452125001 6/6/2018 Be-7 -9.42E-01 4.17E+00 1.38E+01 U TM 15 452125001 6/6/2018 Ce-141 1.48E+00 1.61E+00 2.79E+00 U TM 15 452125001 6/6/2018 Ce-144 1.13E-01 3.12E+00 1.01E+01 U TM 15 452125001 6/6/2018 Co-57 -1.35E-01 4.25E-01 1.37E+00 U TM 15 452125001 6/6/2018 Co-58 -1.22E+00 5.97E-01 1.52E+00 U TM 15 452125001 6/6/2018 Co-60 -8.94E-02 5.63E-01 1.86E+00 U TM 15 452125001 6/6/2018 Cr-51 -2.22E+00 4.53E+00 1.52E+01 U TM 15 452125001 6/6/2018 Cs-134 2.29E-01 5.33E-01 1.74E+00 U TM 15 452125001 6/6/2018 Cs-137 0.00E+00 1.11E+00 1.49E+00 U TM 15 452125001 6/6/2018 Fe-59 1.90E+00 1.38E+00 4.60E+00 U TM 15 452125001 6/6/2018 I-131 -2.16E-01 2.02E-01 6.11E-01 U TM 15 452125001 6/6/2018 K-40 1.54E+03 8.20E+01 1.34E+01 TM 15 452125001 6/6/2018 La-140 9.22E-02 7.99E-01 2.63E+00 U TM 15 452125001 6/6/2018 Mn-54 1.97E-01 5.48E-01 1.77E+00 U TM 15 452125001 6/6/2018 Nb-95 1.38E+00 7.83E-01 1.67E+00 U TM 15 452125001 6/6/2018 Ru-103 -1.07E-01 5.74E-01 1.70E+00 U TM 15 452125001 6/6/2018 Ru-106 1.72E+00 4.33E+00 1.43E+01 U TM 15 452125001 6/6/2018 Sb-124 -1.98E+00 1.20E+00 3.14E+00 U TM 15 452125001 6/6/2018 Sb-125 1.12E+00 1.34E+00 4.11E+00 U TM 15 452125001 6/6/2018 Se-75 -6.54E-01 7.37E-01 2.20E+00 U TM 15 452125001 6/6/2018 Th-228 2.20E-02 2.02E+00 3.50E+00 U TM 15 452125001 6/6/2018 Zn-65 6.49E-01 1.33E+00 4.53E+00 U TM 15 452125001 6/6/2018 Zr-95 1.05E+00 9.85E-01 3.21E+00 U TM 15 453239001 6/20/2018 Ac-228 4.84E-01 4.21E+00 7.96E+00 U TM 15 453239001 6/20/2018 Ag-108m 3.66E-01 1.05E+00 1.86E+00 U TM 15 453239001 6/20/2018 Ag-110m -4.93E-01 7.83E-01 2.55E+00 U -222-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 453239001 6/20/2018 Ba-140 -3.10E+00 4.70E+00 1.46E+01 U TM 15 453239001 6/20/2018 Be-7 -9.88E-01 5.70E+00 1.84E+01 U TM 15 453239001 6/20/2018 Ce-141 -2.75E+00 1.31E+00 3.80E+00 U TM 15 453239001 6/20/2018 Ce-144 -1.51E+00 3.72E+00 1.26E+01 U TM 15 453239001 6/20/2018 Co-57 2.59E-01 5.01E-01 1.72E+00 U TM 15 453239001 6/20/2018 Co-58 -1.73E+00 7.85E-01 2.11E+00 U TM 15 453239001 6/20/2018 Co-60 7.89E-02 6.06E-01 1.98E+00 U TM 15 453239001 6/20/2018 Cr-51 -9.58E+00 7.11E+00 2.17E+01 U TM 15 453239001 6/20/2018 Cs-134 -1.87E-01 7.22E-01 2.12E+00 U TM 15 453239001 6/20/2018 Cs-137 4.23E+00 1.19E+00 1.97E+00 M TM 15 453239001 6/20/2018 Fe-59 -2.61E-01 1.51E+00 4.94E+00 U TM 15 453239001 6/20/2018 I-131 -2.34E-01 2.27E-01 7.36E-01 U TM 15 453239001 6/20/2018 K-40 1.74E+03 8.89E+01 1.79E+01 TM 15 453239001 6/20/2018 La-140 -1.64E+00 1.27E+00 3.55E+00 U TM 15 453239001 6/20/2018 Mn-54 -1.24E-01 5.99E-01 2.00E+00 U TM 15 453239001 6/20/2018 Nb-95 8.98E-01 1.01E+00 2.07E+00 U TM 15 453239001 6/20/2018 Ru-103 1.56E+00 8.80E-01 2.13E+00 U TM 15 453239001 6/20/2018 Ru-106 -7.95E+00 5.57E+00 1.59E+01 U TM 15 453239001 6/20/2018 Sb-124 1.71E+00 1.29E+00 4.27E+00 U TM 15 453239001 6/20/2018 Sb-125 3.59E-01 1.59E+00 5.20E+00 U TM 15 453239001 6/20/2018 Se-75 -3.54E-01 8.19E-01 2.70E+00 U TM 15 453239001 6/20/2018 Th-228 1.89E+00 2.14E+00 3.90E+00 U TM 15 453239001 6/20/2018 Zn-65 -1.05E-01 1.38E+00 4.54E+00 U TM 15 453239001 6/20/2018 Zr-95 -1.63E+00 1.16E+00 3.55E+00 U TM 15 454059001 7/3/2018 Ac-228 -7.26E+00 3.55E+00 7.00E+00 U TM 15 454059001 7/3/2018 Ag-108m -1.26E-01 3.93E-01 1.30E+00 U TM 15 454059001 7/3/2018 Ag-110m -2.46E-01 6.70E-01 2.09E+00 U TM 15 454059001 7/3/2018 Ba-140 -2.34E+00 5.37E+00 1.11E+01 U TM 15 454059001 7/3/2018 Be-7 2.66E+00 4.23E+00 1.41E+01 U TM 15 454059001 7/3/2018 Ce-141 -1.71E+00 1.06E+00 2.84E+00 U TM 15 454059001 7/3/2018 Ce-144 5.69E+00 5.85E+00 9.29E+00 U TM 15 454059001 7/3/2018 Co-57 -9.30E-02 3.81E-01 1.24E+00 U TM 15 454059001 7/3/2018 Co-58 -2.87E-01 5.04E-01 1.57E+00 U TM 15 454059001 7/3/2018 Co-60 1.89E-02 5.13E-01 1.70E+00 U TM 15 454059001 7/3/2018 Cr-51 1.27E+00 4.59E+00 1.57E+01 U TM 15 454059001 7/3/2018 Cs-134 4.18E-02 5.08E-01 1.63E+00 U TM 15 454059001 7/3/2018 Cs-137 2.72E+00 1.22E+00 1.52E+00 M TM 15 454059001 7/3/2018 Fe-59 -1.88E+00 1.78E+00 4.14E+00 U TM 15 454059001 7/3/2018 I-131 1.94E-01 1.67E-01 5.53E-01 U TM 15 454059001 7/3/2018 K-40 1.66E+03 8.40E+01 1.39E+01 TM 15 454059001 7/3/2018 La-140 -2.63E+00 1.10E+00 2.44E+00 U TM 15 454059001 7/3/2018 Mn-54 4.37E-01 4.99E-01 1.60E+00 U TM 15 454059001 7/3/2018 Nb-95 5.19E-01 5.06E-01 1.63E+00 U TM 15 454059001 7/3/2018 Ru-103 -1.31E-01 5.53E-01 1.63E+00 U TM 15 454059001 7/3/2018 Ru-106 1.07E-01 4.11E+00 1.34E+01 U TM 15 454059001 7/3/2018 Sb-124 1.34E+00 1.10E+00 3.65E+00 U TM 15 454059001 7/3/2018 Sb-125 -1.43E+00 1.78E+00 3.93E+00 U TM 15 454059001 7/3/2018 Se-75 -6.19E-01 6.64E-01 1.98E+00 U TM 15 454059001 7/3/2018 Th-228 3.13E-01 1.72E+00 3.22E+00 U TM 15 454059001 7/3/2018 Zn-65 -3.38E-01 1.19E+00 3.64E+00 U -223-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 454059001 7/3/2018 Zr-95 -1.72E+00 9.55E-01 2.59E+00 U TM 15 455091001 7/18/2018 Ac-228 4.40E-01 4.48E+00 5.23E+00 U TM 15 455091001 7/18/2018 Ag-108m 1.33E-01 3.99E-01 1.19E+00 U TM 15 455091001 7/18/2018 Ag-110m -4.76E-01 6.61E-01 2.15E+00 U TM 15 455091001 7/18/2018 Ba-140 -3.09E+00 3.58E+00 1.11E+01 U TM 15 455091001 7/18/2018 Be-7 -3.69E+00 4.30E+00 1.35E+01 U TM 15 455091001 7/18/2018 Ce-141 2.69E+00 1.13E+00 2.76E+00 U TM 15 455091001 7/18/2018 Ce-144 2.60E+00 2.96E+00 9.43E+00 U TM 15 455091001 7/18/2018 Co-57 3.60E-01 3.85E-01 1.23E+00 U TM 15 455091001 7/18/2018 Co-58 -2.35E-01 5.02E-01 1.67E+00 U TM 15 455091001 7/18/2018 Co-60 3.35E-01 5.39E-01 1.78E+00 U TM 15 455091001 7/18/2018 Cr-51 8.63E-02 4.68E+00 1.58E+01 U TM 15 455091001 7/18/2018 Cs-134 1.56E-01 4.93E-01 1.68E+00 U TM 15 455091001 7/18/2018 Cs-137 3.14E+00 9.58E-01 1.45E+00 M TM 15 455091001 7/18/2018 Fe-59 -5.04E-01 1.28E+00 4.17E+00 U TM 15 455091001 7/18/2018 I-131 1.83E-01 1.49E-01 4.92E-01 U TM 15 455091001 7/18/2018 K-40 1.59E+03 8.16E+01 1.48E+01 TM 15 455091001 7/18/2018 La-140 -2.19E+00 1.21E+00 3.10E+00 U TM 15 455091001 7/18/2018 Mn-54 -8.82E-02 4.43E-01 1.49E+00 U TM 15 455091001 7/18/2018 Nb-95 -1.51E-01 5.30E-01 1.66E+00 U TM 15 4550910 01 7/18/2018 Ru-103 -5.79E-01 5.79E-01 1.59E+00 U TM 15 455091001 7/18/2018 Ru-106 -2.78E+00 4.50E+00 1.25E+01 U TM 15 455091001 7/18/2018 Sb-124 1.06E+00 1.07E+00 3.70E+00 U TM 15 455091001 7/18/2018 Sb-125 -1.80E+00 1.32E+00 3.53E+00 U TM 15 455091001 7/18/2018 Se-75 -1.07E-01 5.66E-01 1.93E+00 U TM 15 455091001 7/18/2018 Th-228 -1.42E+00 1.52E+00 3.07E+00 U TM 15 455091001 7/18/2018 Zn-65 -1.00E+00 1.21E+00 3.82E+00 U TM 15 455091001 7/18/2018 Zr-95 -8.44E-03 9.11E-01 2.89E+00 U TM 15 456461001 8/1/2018 Ac-228 -1.01E+01 4.66E+00 9.77E+00 U TM 15 456461001 8/1/2018 Ag-108m -1.20E+00 5.79E-01 1.57E+00 U TM 15 456461001 8/1/2018 Ag-110m -2.46E-01 8.84E-01 2.79E+00 U TM 15 456461001 8/1/2018 Ba-140 1.38E+00 3.06E+00 9.09E+00 U TM 15 456461001 8/1/2018 Be-7 3.74E+00 4.80E+00 1.59E+01 U TM 15 456461001 8/1/2018 Ce-141 -3.05E+00 1.80E+00 3.52E+00 U TM 15 456461001 8/1/2018 Ce-144 -6.58E+00 4.26E+00 1.33E+01 U TM 15 456461001 8/1/2018 Co-57 -5.00E-01 5.41E-01 1.79E+00 U TM 15 456461001 8/1/2018 Co-58 -6.26E-01 6.26E-01 1.88E+00 U TM 15 456461001 8/1/2018 Co-60 -1.77E+00 1.26E+00 2.30E+00 U TM 15 456461001 8/1/2018 Cr-51 1.09E+00 5.29E+00 1.78E+01 U TM 15 456461001 8/1/2018 Cs-134 6.17E-01 6.88E-01 2.24E+00 U TM 15 456461001 8/1/2018 Cs-137 3.20E+00 1.20E+00 2.05E+00 M TM 15 456461001 8/1/2018 Fe-59 -1.19E+00 1.43E+00 4.63E+00 U TM 15 456461001 8/1/2018 I-131 1.23E-01 1.27E-01 4.21E-01 U TM 15 456461001 8/1/2018 K-40 1.66E+03 9.03E+01 1.85E+01 TM 15 456461001 8/1/2018 La-140 1.11E+00 9.04E-01 3.09E+00 U TM 15 456461001 8/1/2018 Mn-54 7.57E-01 6.67E-01 2.06E+00 U TM 15 456461001 8/1/2018 Nb-95 -5.32E-01 6.40E-01 1.96E+00 U TM 15 456461001 8/1/2018 Ru-103 -5.65E-01 5.92E-01 1.84E+00 U TM 15 456461001 8/1/2018 Ru-106 8.71E-01 5.19E+00 1.70E+01 U -224-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 456461001 8/1/2018 Sb-124 5.56E-02 1.33E+00 4.43E+00 U TM 15 456461001 8/1/2018 Sb-125 -9.14E-01 1.50E+00 4.82E+00 U TM 15 456461001 8/1/2018 Se-75 -1.10E+00 8.23E-01 2.56E+00 U TM 15 456461001 8/1/2018 Th-228 2.72E+00 2.71E+00 4.35E+00 U TM 15 456461001 8/1/2018 Zn-65 -2.03E+00 1.57E+00 4.85E+00 U TM 15 456461001 8/1/2018 Zr-95 5.52E-01 1.09E+00 3.56E+00 U TM 15 457693001 8/15/2018 Ac-228 1.77E+00 4.03E+00 7.74E+00 U TM 15 457693001 8/15/2018 Ag-108m 1.07E+00 7.45E-01 1.50E+00 U TM 15 457693001 8/15/2018 Ag-110m -1.32E-01 8.01E-01 2.67E+00 U TM 15 457693001 8/15/2018 Ba-140 2.53E+00 3.12E+00 1.01E+01 U TM 15 457693001 8/15/2018 Be-7 -3.46E+00 4.84E+00 1.52E+01 U TM 15 457693001 8/15/2018 Ce-141 -5.26E+00 1.81E+00 2.69E+00 U TM 15 457693001 8/15/2018 Ce-144 -1.35E+00 3.10E+00 9.61E+00 U TM 15 457693001 8/15/2018 Co-57 -8.15E-01 4.42E-01 1.22E+00 U TM 15 457693001 8/15/2018 Co-58 3.34E-01 5.84E-01 1.99E+00 U TM 15 457693001 8/15/2018 Co-60 1.00E+00 6.50E-01 2.11E+00 U TM 15 457693001 8/15/2018 Cr-51 1.58E+00 4.85E+00 1.62E+01 U TM 15 457693001 8/15/2018 Cs-134 3.38E-01 6.49E-01 2.06E+00 U TM 15 457693001 8/15/2018 Cs-137 5.05E+00 9.91E-01 1.73E+00 M TM 15 457693001 8/15/2018 Fe-59 -3.33E-01 1.45E+00 4.15E+00 U TM 15 457693001 8/15/2018 I-131 -2.14E-01 2.86E-01 5.80E-01 U TM 15 457693001 8/15/2018 K-40 1.62E+03 7.78E+01 1.55E+01 TM 15 457693001 8/15/2018 La-140 3.18E-01 9.12E-01 2.97E+00 U TM 15 457693001 8/15/2018 Mn-54 -6.27E-01 5.28E-01 1.64E+00 U TM 15 457693001 8/15/2018 Nb-95 8.54E-01 6.05E-01 2.02E+00 U TM 15 457693001 8/15/2018 Ru-103 -6.72E-01 7.02E-01 1.91E+00 U TM 15 457693001 8/15/2018 Ru-106 -6.72E+00 5.49E+00 1.61E+01 U TM 15 457693001 8/15/2018 Sb-124 1.18E+00 1.12E+00 3.88E+00 U TM 15 457693001 8/15/2018 Sb-125 -2.96E+00 1.69E+00 4.20E+00 U TM 15 457693001 8/15/2018 Se-75 -8.82E-01 9.47E-01 2.21E+00 U TM 15 457693001 8/15/2018 Th-228 4.00E-01 1.74E+00 2.75E+00 U TM 15 457693001 8/15/2018 Zn-65 -2.11E+00 1.48E+00 4.35E+00 U TM 15 457693001 8/15/2018 Zr-95 1.38E+00 1.06E+00 3.56E+00 U TM 15 459423001 9/12/2018 Ac-228 0.00E+00 4.85E+00 8.00E+00 U TM 15 459423001 9/12/2018 Ag-108m 5.82E-01 4.90E-01 1.62E+00 U TM 15 459423001 9/12/2018 Ag-110m 2.31E-02 8.60E-01 2.57E+00 U TM 15 459423001 9/12/2018 Ba-140 1.92E+00 4.26E+00 1.41E+01 U TM 15 459423001 9/12/2018 Be-7 2.72E+00 4.90E+00 1.63E+01 U TM 15 459423001 9/12/2018 Ce-141 2.11E+00 2.13E+00 3.48E+00 U TM 15 459423001 9/12/2018 Ce-144 -7.89E-01 3.62E+00 1.17E+01 U TM 15 459423001 9/12/2018 Co-57 3.70E-01 4.71E-01 1.53E+00 U TM 15 459423001 9/12/2018 Co-58 -3.16E-01 6.65E-01 2.06E+00 U TM 15 459423001 9/12/2018 Co-60 1.45E+00 7.76E-01 2.45E+00 U TM 15 459423001 9/12/2018 Cr-51 -3.68E+00 5.96E+00 1.98E+01 U TM 15 459423001 9/12/2018 Cs-134 -1.13E-01 6.70E-01 2.11E+00 U TM 15 459423001 9/12/2018 Cs-137 4.15E+00 1.47E+00 1.91E+00 M TM 15 459423001 9/12/2018 Fe-59 -2.34E+00 1.71E+00 5.15E+00 U TM 15 459423001 9/12/2018 I-131 -5.98E-01 3.92E-01 1.21E+00 U DL TM 15 459423001 9/12/2018 K-40 1.83E+03 1.06E+02 1.96E+01 -225-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 459423001 9/12/2018 La-140 3.98E-01 1.29E+00 4.22E+00 U TM 15 459423001 9/12/2018 Mn-54 -3.64E-01 5.82E-01 1.93E+00 U TM 15 459423001 9/12/2018 Nb-95 1.17E+00 6.88E-01 2.14E+00 U TM 15 459423001 9/12/2018 Ru-103 7.94E-02 7.52E-01 2.23E+00 U TM 15 459423001 9/12/2018 Ru-106 3.61E+00 5.87E+00 1.72E+01 U TM 15 459423001 9/12/2018 Sb-124 -2.53E+00 1.46E+00 3.70E+00 U TM 15 459423001 9/12/2018 Sb-125 3.73E+00 1.72E+00 5.22E+00 U TM 15 459423001 9/12/2018 Se-75 -2.04E-01 8.50E-01 2.41E+00 U TM 15 459423001 9/12/2018 Th-228 0.00E+00 2.31E+00 3.27E+00 U TM 15 459423001 9/12/2018 Zn-65 6.50E-01 1.46E+00 4.90E+00 U TM 15 459423001 9/12/2018 Zr-95 -4.60E-01 1.17E+00 3.67E+00 U TM 15 460463001 9/26/2018 Ac-228 8.67E-01 3.71E+00 8.62E+00 U TM 15 460463001 9/26/2018 Ag-108m 2.83E-01 4.68E-01 1.40E+00 U TM 15 460463001 9/26/2018 Ag-110m 4.72E-02 7.36E-01 2.49E+00 U TM 15 460463001 9/26/2018 Ba-140 1.95E+00 2.91E+00 9.56E+00 U TM 15 460463001 9/26/2018 Be-7 -2.95E+00 4.48E+00 1.43E+01 U TM 15 460463001 9/26/2018 Ce-141 -5.01E-01 9.79E-01 2.83E+00 U TM 15 460463001 9/26/2018 Ce-144 -6.34E+00 3.58E+00 1.01E+01 U TM 15 460463001 9/26/2018 Co-57 5.51E-01 4.36E-01 1.38E+00 U TM 15 460463001 9/26/2018 Co-58 1.68E-01 5.73E-01 1.96E+00 U TM 15 460463001 9/26/2018 Co-60 1.56E+00 7.46E-01 2.27E+00 U TM 15 460463001 9/26/2018 Cr-51 1.43E-01 5.13E+00 1.73E+01 U TM 15 460463001 9/26/2018 Cs-134 6.09E-02 5.75E-01 1.96E+00 U TM 15 460463001 9/26/2018 Cs-137 3.27E+00 9.98E-01 1.85E+00 M TM 15 460463001 9/26/2018 Fe-59 1.66E+00 1.67E+00 4.94E+00 U TM 15 460463001 9/26/2018 I-131 3.16E-01 2.74E-01 8.98E-01 U TM 15 460463001 9/26/2018 K-40 1.69E+03 8.90E+01 1.70E+01 TM 15 460463001 9/26/2018 La-140 -5.18E-01 9.72E-01 2.99E+00 U TM 15 460463001 9/26/2018 Mn-54 -5.38E-01 6.60E-01 1.71E+00 U TM 15 460463001 9/26/2018 Nb-95 -8.28E-02 6.01E-01 1.90E+00 U TM 15 460463001 9/26/2018 Ru-103 -4.53E-02 5.72E-01 1.67E+00 U TM 15 460463001 9/26/2018 Ru-106 3.59E+00 4.93E+00 1.61E+01 U TM 15 460463001 9/26/2018 Sb-124 2.71E+00 1.41E+00 4.72E+00 U TM 15 460463001 9/26/2018 Sb-125 -1.06E+00 1.54E+00 4.39E+00 U TM 15 460463001 9/26/2018 Se-75 1.10E+00 7.04E-01 2.31E+00 U TM 15 460463001 9/26/2018 Th-228 -1.78E+00 1.48E+00 3.61E+00 U TM 15 460463001 9/26/2018 Zn-65 7.28E-02 1.40E+00 4.64E+00 U TM 15 460463001 9/26/2018 Zr-95 1.06E+00 1.05E+00 3.37E+00 U TM 15 461644001 10/10/2018 Ag-108m -1.95E-01 5.59E-01 1.64E+00 U TM 1 5 461644001 10/10/2018 Ag-110m 2.14E-01 8.80E-01 3.00E+00 U TM 15 461644001 10/10/2018 Ba-140 4.10E+00 4.00E+00 1.31E+01 U TM 15 461644001 10/10/2018 Be-7 -6.48E+00 5.41E+00 1.66E+01 U TM 15 461644001 10/10/2018 Ce-141 -1.18E+00 1.12E+00 3.42E+00 U TM 15 461644001 10/10/2018 Ce-144 -3.45E+00 4.75E+00 1.23E+01 U TM 15 461644001 10/10/2018 Co-57 -4.64E-01 5.04E-01 1.58E+00 U TM 15 461644001 10/10/2018 Co-58 -5.38E-01 7.03E-01 2.13E+00 U TM 15 461644001 10/10/2018 Co-60 -1.54E-01 7.08E-01 2.29E+00 U TM 15 461644001 10/10/2018 Cr-51 4.46E-01 5.91E+00 2.01E+01 U TM 15 461644001 10/10/2018 Cs-134 4.48E-01 6.83E-01 2.20E+00 U -226-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 461644001 10/10/2018 Cs-137 3.63E+00 1.38E+00 1.98E+00 M TM 15 461644001 10/10/2018 Fe-59 -2.43E-02 1.66E+00 5.52E+00 U TM 15 461644001 10/10/2018 I-131 -1.41E-01 2.31E-01 7.44E-01 U TM 15 461644001 10/10/2018 K-40 1.86E+03 1.09E+02 1.85E+01 TM 15 461644001 10/10/2018 La-140 -2.07E+00 1.31E+00 3.46E+00 U TM 15 461644001 10/10/2018 Mn-54 5.30E-01 5.94E-01 2.03E+00 U TM 15 461644001 10/10/2018 Nb-95 1.46E+00 1.09E+00 2.06E+00 U TM 15 461644001 10/10/2018 Ru-103 -6.08E-01 7.14E-01 2.26E+00 U TM 15 461644001 10/10/2018 Ru-106 -8.25E+00 5.87E+00 1.71E+01 U TM 15 461644001 10/10/2018 Sb-124 -4.31E+00 1.89E+00 4.18E+00 U TM 15 461644001 10/10/2018 Sb-125 4.38E+00 1.91E+00 5.31E+00 U TM 15 461644001 10/10/2018 Se-75 6.27E-01 8.59E-01 2.68E+00 U TM 15 461644001 10/10/2018 Th-228 -3.44E-01 1.64E+00 4.08E+00 U TM 15 461644001 10/10/2018 Zn-65 -3.04E-01 1.62E+00 5.33E+00 U TM 15 461644001 10/10/2018 Zr-95 -7.99E-02 1.21E+00 3.86E+00 U TM 15 463999001 11/7/2018 Ac-228 -6.33E-01 3.25E+00 8.01E+00 U TM 15 463999001 11/7/2018 Ag-108m 5.10E-01 4.63E-01 1.53E+00 U TM 15 463999001 11/7/2018 Ag-110m 1.90E-01 7.45E-01 2.40E+00 U TM 15 463999001 11/7/2018 Ba-140 3.21E+00 2.71E+00 8.90E+00 U TM 15 463999001 11/7/2018 Be-7 -2.59E+00 4.51E+00 1.46E+01 U TM 15 463999001 11/7/2018 Ce-141 -6.85E-01 1.04E+00 3.22E+00 U TM 15 463999001 11/7/2018 Ce-144 6.30E+00 3.99E+00 1.21E+01 U TM 15 463999001 11/7/2018 Co-57 5.37E-01 5.23E-01 1.65E+00 U TM 15 463999001 11/7/2018 Co-58 5.84E-01 6.02E-01 1.95E+00 U TM 15 463999001 11/7/2018 Co-60 -1.01E-01 6.65E-01 1.94E+00 U TM 15 463999001 11/7/2018 Cr-51 -5.09E-01 4.81E+00 1.62E+01 U TM 15 463999001 11/7/2018 Cs-134 -4.46E-03 5.92E-01 1.90E+00 U TM 15 463999001 11/7/2018 Cs-137 9.44E-01 5.91E-01 1.88E+00 U TM 15 463999001 11/7/2018 Fe-59 -5.95E-01 1.53E+00 4.47E+00 U TM 15 463999001 11/7/2018 I-131 1.45E-01 2.15E-01 7.13E-01 U TM 15 463999001 11/7/2018 K-40 2.10E+03 1.23E+02 1.29E+01 TM 15 463999001 11/7/2018 La-140 -8.49E-01 7.48E-01 2.19E+00 U TM 15 463999001 11/7/2018 Mn-54 2.97E-01 5.59E-01 1.81E+00 U TM 15 463999001 11/7/2018 Nb-95 2.16E-01 5.80E-01 1.89E+00 U TM 15 463999001 11/7/2018 Ru-103 -8.88E-01 6.07E-01 1.59E+00 U TM 15 463999001 11/7/2018 Ru-106 7.48E+00 4.79E+00 1.54E+01 U TM 15 463999001 11/7/2018 Sb-124 -4.46E-01 1.08E+00 3.44E+00 U TM 15 463999001 11/7/2018 Sb-125 -6.67E-01 1.34E+00 4.38E+00 U TM 15 463999001 11/7/2018 Se-75 3.23E-01 7.15E-01 2.45E+00 U TM 15 463999001 11/7/2018 Th-228 -1.71E+00 1.68E+00 3.63E+00 U TM 15 463999001 11/7/2018 Zn-65 1.88E+00 1.48E+00 4.95E+00 U TM 15 463999001 11/7/2018 Zr-95 1.04E-01 9.99E-01 3.24E+00 U TM 15 466555001 12/5/2018 Ac-228 3.62E+00 2.69E+00 8.98E+00 U TM 15 466555001 12/5/2018 Ag-108m 5.16E-01 5.26E-01 1.75E+00 U TM 15 466555001 12/5/2018 Ag-110m 1.09E+00 1.58E+00 2.75E+00 U TM 15 466555001 12/5/2018 Ba-140 -3.07E+00 2.91E+00 8.93E+00 U TM 15 466555001 12/5/2018 Be-7 7.28E+00 5.24E+00 1.71E+01 U TM 15 466555001 12/5/2018 Ce-141 -5.01E+00 1.88E+00 3.12E+00 U TM 15 466555001 12/5/2018 Ce-144 2.16E+00 3.81E+00 1.24E+01 U -227-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TM 15 466555001 12/5/2018 Co-57 7.26E-01 5.17E-01 1.64E+00 U TM 15 466555001 12/5/2018 Co-58 1.09E-01 6.55E-01 2.09E+00 U TM 15 466555001 12/5/2018 Co-60 -3.34E-01 7.29E-01 2.33E+00 U TM 15 466555001 12/5/2018 Cr-51 -5.09E+00 5.10E+00 1.65E+01 U TM 15 466555001 12/5/2018 Cs-134 1.94E+00 9.53E-01 2.15E+00 U TM 15 466555001 12/5/2018 Cs-137 4.28E+00 1.11E+00 1.94E+00 M TM 15 466555001 12/5/2018 Fe-59 1.29E+00 1.63E+00 4.87E+00 U TM 15 466555001 12/5/2018 I-131 -8.91E-03 2.46E-01 7.89E-01 U TM 15 466555001 12/5/2018 K-40 1.62E+03 9.56E+01 1.87E+01 TM 15 466555001 12/5/2018 La-140 -5.16E-01 8.71E-01 2.66E+00 U TM 15 466555001 12/5/2018 Mn-54 4.83E-01 6.03E-01 2.07E+00 U TM 15 466555001 12/5/2018 Nb-95 4.44E-01 6.45E-01 2.08E+00 U TM 15 466555001 12/5/2018 Ru-103 -2.88E-01 6.30E-01 1.81E+00 U TM 15 466555001 12/5/2018 Ru-106 -7.59E-01 5.25E+00 1.69E+01 U TM 15 466555001 12/5/2018 Sb-124 -6.98E-01 1.31E+00 4.01E+00 U TM 15 466555001 12/5/2018 Sb-125 -1.61E+00 1.59E+00 5.02E+00 U TM 15 466555001 12/5/2018 Se-75 1.85E+00 8.97E-01 2.59E+00 U TM 15 466555001 12/5/2018 Th-228 2.92E+00 2.35E+00 3.94E+00 U TM 15 466555001 12/5/2018 Zn-65 -1.87E+00 1.67E+00 5.14E+00 U TM 15 466555001 12/5/2018 Zr-95 7.84E-02 1.12E+00 3.58E+00 U -228-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WG 01 446065001 3/12/2018 Ac-228 -5.80E+00 3.70E+00 7.76E+00 U WG 01 446065001 3/12/2018 Ag-108m -8.11E-02 4.01E-01 1.32E+00 U WG 01 446065001 3/12/2018 Ag-110m 2.43E-01 6.11E-01 2.08E+00 U WG 01 446065001 3/12/2018 Ba-140 4.56E-01 2.52E+00 8.25E+00 U WG 01 446065001 3/12/2018 Be-7 6.31E+00 4.30E+00 1.39E+01 U WG 01 446065001 3/12/2018 BET A 6.17E+00 1.36E+00 2.80E+00 WG 01 446065001 3/12/2018 Bi-214 6.08E+00 2.65E+00 3.22E+00 X (1) WG 01 446065001 3/12/2018 Ce-141 -1.82E+00 9.56E-01 2.60E+00 U WG 01 446065001 3/12/2018 Ce-144 1.61E+00 3.08E+00 9.86E+00 U WG 01 446065001 3/12/2018 Co-57 2.52E-01 4.27E-01 1.27E+00 U WG 01 446065001 3/12/2018 Co-58 2.53E-01 4.41E-01 1.52E+00 U WG 01 446065001 3/12/2018 Co-60 2.45E-02 5.32E-01 1.74E+00 U WG 01 446065001 3/12/2018 Cr-51 -5.85E-01 4.37E+00 1.47E+01 U WG 01 446065001 3/12/2018 Cs-134 -3.69E-01 4.79E-01 1.55E+00 U WG 01 446065001 3/12/2018 Cs-137 5.84E-01 5.10E-01 1.65E+00 U WG 01 446065001 3/12/2018 Fe-59 2.50E+00 1.54E+00 3.18E+00 U WG 01 446065001 3/12/2018 H-3 1.50E+01 1.15E+02 3.77E+02 U WG 01 446065001 3/12/2018 I-131 7.65E-01 9.12E-01 3.05E+00 U WG 01 446065001 3/12/2018 K-40 2.64E+00 1.50E+01 1.65E+01 U WG 01 446065001 3/12/2018 La-140 5.39E-01 9.62E-01 2.81E+00 U WG 01 446065001 3/12/2018 Mn-54 3.17E-01 4.49E-01 1.54E+00 U WG 01 446065001 3/12/2018 Nb-95 1.53E-01 5.44E-01 1.74E+00 U WG 01 446065001 3/12/2018 Pb-212 1.16E+00 1.68E+00 2.58E+00 U WG 01 446065001 3/12/2018 Pb-214 7.53E+00 2.39E+00 4.50E+00 X (1) WG 01 446065001 3/12/2018 Ru-103 9.48E-01 5.71E-01 1.66E+00 U WG 01 446065001 3/12/2018 Ru-106 -1.79E+00 4.36E+00 1.38E+01 U WG 01 446065001 3/12/2018 Sb-124 5.00E-02 1.17E+00 3.76E+00 U WG 01 446065001 3/12/2018 Sb-125 6.54E-01 1.25E+00 4.16E+00 U WG 01 446065001 3/12/2018 Se-75 -3.30E-01 8.39E-01 2.04E+00 U WG 01 446065001 3/12/2018 Th-228 1.16E+00 1.68E+00 2.58E+00 U WG 01 446065001 3/12/2018 Zn-65 2.55E+00 1.23E+00 3.61E+00 U WG 01 446065001 3/12/2018 Zr-95 1.55E-02 8.45E-01 2.69E+00 U WG 01 452123001 6/6/2018 Ac-228 3.60E+00 4.27E+00 8.36E+00 U WG 01 452123001 6/6/2018 Ag-108m -6.37E-02 4.54E-01 1.50E+00 U WG 01 452123001 6/6/2018 Ag-110m -2.17E+00 1.34E+00 2.29E+00 U WG 01 452123001 6/6/2018 Ba-140 -1.67E+00 2.88E+00 9.19E+00 U WG 01 452123001 6/6/2018 Be-7 1.21E+00 4.54E+00 1.51E+01 U WG 01 452123001 6/6/2018 BETA 2.77E+00 9.96E-01 2.99E+00 U WG 01 452123001 6/6/2018 Bi-214 0.00E+00 2.90E+00 3.30E+00 U WG 01 452123001 6/6/2018 Ce-141 -1.74E+00 1.10E+00 3.40E+00 U WG 01 452123001 6/6/2018 Ce-144 2.55E+00 3.82E+00 1.31E+01 U WG 01 452123001 6/6/2018 Co-57 5.37E-01 4.91E-01 1.66E+00 U WG 01 452123001 6/6/2018 Co-58 3.41E-01 5.42E-01 1.78E+00 U WG 01 452123001 6/6/2018 Co-60 6.07E-01 6.12E-01 2.10E+00 U WG 01 452123001 6/6/2018 Cr-51 -3.56E+00 5.40E+00 1.76E+01 U WG 01 452123001 6/6/2018 Cs-134 -5.59E-01 9.23E-01 2.01E+00 U WG 01 452123001 6/6/2018 Cs-137 -2.57E-01 5.53E-01 1.76E+00 U WG 01 452123001 6/6/2018 Fe-59 -3.43E-01 1.21E+00 3.76E+00 U WG 01 452123001 6/6/2018 H-3 -4.18E+01 1.53E+02 5.09E+02 U -229-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WG 01 452123001 6/6/2018 I-131 6.99E-01 1.08E+00 3.64E+00 U WG 01 452123001 6/6/2018 K-40 3.59E+00 1.49E+01 1.76E+01 U WG 01 452123001 6/6/2018 La-140 -1.68E-01 9.54E-01 3.16E+00 U WG 01 452123001 6/6/2018 Mn-54 1.17E-01 4.95E-01 1.61E+00 U WG 01 452123001 6/6/2018 Nb-95 -1.62E+00 1.16E+00 1.92E+00 U WG 01 452123001 6/6/2018 Pb-212 5.77E-01 2.06E+00 4.02E+00 U WG 01 452123001 6/6/2018 Pb-214 4.43E+00 2.61E+00 5.05E+00 U WG 01 452123001 6/6/2018 Ru-103 -4.58E-01 6.13E-01 1.94E+00 U WG 01 452123001 6/6/2018 Ru-106 -1.46E+00 5.06E+00 1.63E+01 U WG 01 452123001 6/6/2018 Sb-124 9.71E-01 1.37E+00 4.71E+00 U WG 01 452123001 6/6/2018 Sb-125 -1.19E+00 1.47E+00 4.68E+00 U WG 01 452123001 6/6/2018 Se-75 1.02E-01 7.12E-01 2.41E+00 U WG 01 452123001 6/6/2018 Th-228 5.77E-01 2.06E+00 4.02E+00 U WG 01 452123001 6/6/2018 Zn-65 -7.72E-01 1.34E+00 3.58E+00 U WG 01 452123001 6/6/2018 Zr-95 -7.21E-01 9.97E-01 3.08E+00 U WG 01 459451001 9/12/2018 Ac-228 9.68E+00 3.44E+00 6.57E+00 WG 01 459451001 9/12/2018 Ag-108m 2.56E-01 4.78E-01 1.50E+00 U WG 01 459451001 9/12/2018 Ag-110m 7.81E-01 6.73E-01 2.26E+00 U WG 01 459451001 9/12/2018 Ba-140 2.30E+00 4.13E+00 1.34E+01 U WG 01 459451001 9/12/2018 Be-7 3.31E+00 9.45E+00 1.68E+01 U WG 01 459451001 9/12/2018 BETA 6.71E+00 1.33E+00 2.47E+00 WG 01 459451001 9/12/2018 Bi-214 -2.73E+00 2.07E+00 4.11E+00 U WG 01 459451001 9/12/2018 Ce-141 1.59E+00 2.25E+00 3.46E+00 U WG 01 459451001 9/12/2018 Ce-144 -8.13E-01 4.03E+00 1.16E+01 U WG 01 459451001 9/12/2018 Co-57 -5.89E-01 4.98E-01 1.47E+00 U WG 01 459451001 9/12/2018 Co-58 4.14E-01 5.71E-01 1.93E+00 U WG 01 459451001 9/12/2018 Co-60 -2.80E-02 5.69E-01 1.82E+00 U WG 01 459451001 9/12/2018 Cr-51 -1.92E+00 5.93E+00 1.95E+01 U WG 01 459451001 9/12/2018 Cs-134 5.62E-01 5.40E-01 1.83E+00 U WG 01 459451001 9/12/2018 Cs-137 -5.08E-01 5.13E-01 1.63E+00 U WG 01 459451001 9/12/2018 Fe-59 -2.63E-01 1.22E+00 3.94E+00 U WG 01 459451001 9/12/2018 H-3 8.67E+01 1.24E+02 3.95E+02 U WG 01 459451001 9/12/2018 I-131 2.03E-01 1.92E+00 6.32E+00 U WG 01 459451001 9/12/2018 K-40 9.51E+00 1.03E+01 2.71E+01 U WG 01 459451001 9/12/2018 La-140 -2.59E+00 1.55E+00 4.25E+00 U WG 01 459451001 9/12/2018 Mn-54 1.93E-01 5.17E-01 1.74E+00 U WG 01 459451001 9/12/2018 Nb-95 2.45E-01 5.73E-01 1.94E+00 U WG 01 459451001 9/12/2018 Pb-212 4.25E+00 2.54E+00 4.50E+00 U WG 01 459451001 9/12/2018 Pb-214 3.75E+00 3.24E+00 4.72E+00 U WG 01 459451001 9/12/2018 Ru-103 -2.04E-01 6.34E-01 2.02E+00 U WG 01 459451001 9/12/2018 Ru-106 -4.38E+00 4.80E+00 1.43E+01 U WG 01 459451001 9/12/2018 Sb-124 -1.14E+00 1.40E+00 4.35E+00 U WG 01 459451001 9/12/2018 Sb-125 2.18E+00 1.44E+00 4.59E+00 U WG 01 459451001 9/12/2018 Se-75 1.55E-01 7.32E-01 2.46E+00 U WG 01 459451001 9/12/2018 Th-228 4.25E+00 2.54E+00 4.50E+00 U WG 01 459451001 9/12/2018 Zn-65 1.86E+00 1.09E+00 3.40E+00 U WG 01 459451001 9/12/2018 Zr-95 1.61E+00 1.01E+00 3.37E+00 U WG 01 466553001 12/5/2018 Ac-228 5.10E+00 3.05E+00 5.90E+00 U WG 01 466553001 12/5/2018 Ag-108m 5.56E-01 6.07E-01 1.12E+00 U -230-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WG 01 466553001 12/5/2018 Ag-110m 5.20E-01 5.01E-01 1.65E+00 U WG 01 466553001 12/5/2018 Ba-140 6.92E-01 1.93E+00 6.50E+00 U WG 01 466553001 12/5/2018 Be-7 -2.86E+00 3.30E+00 1.06E+01 U WG 01 466553001 12/5/2018 BETA 7.96E+00 1.42E+00 3.11E+00 WG 01 466553001 12/5/2018 Bi-214 1.38E+01 2.43E+00 2.55E+00 WG 01 466553001 12/5/2018 Ce-141 -1.84E-01 7.07E-01 2.26E+00 U WG 01 466553001 12/5/2018 Ce-144 1.32E-01 2.64E+00 8.52E+00 U WG 01 466553001 12/5/2018 Co-57 -5.19E-02 3.46E-01 1.12E+00 U WG 01 466553001 12/5/2018 Co-58 5.46E-01 3.84E-01 1.26E+00 U WG 01 466553001 12/5/2018 Co-60 3.18E-01 3.76E-01 1.30E+00 U WG 01 466553001 12/5/2018 Cr-51 3.34E+00 3.67E+00 1.26E+01 U WG 01 466553001 12/5/2018 Cs-134 7.42E-02 4.23E-01 1.39E+00 U WG 01 466553001 12/5/2018 Cs-137 1.21E-01 3.88E-01 1.29E+00 U WG 01 466553001 12/5/2018 Fe-59 -1.39E+00 8.96E-01 2.41E+00 U WG 01 466553001 12/5/2018 H-3 6.11E+01 1.26E+02 4.08E+02 U WG 01 466553001 12/5/2018 I-131 -5.45E-01 7.06E-01 2.32E+00 U WG 01 466553001 12/5/2018 K-40 -3.00E+01 1.17E+01 1.84E+01 U WG 01 466553001 12/5/2018 La-140 8.84E-01 7.08E-01 2.41E+00 U WG 01 466553001 12/5/2018 Mn-54 2.49E-01 3.60E-01 1.19E+00 U WG 01 466553001 12/5/2018 Nb-95 -7.59E-03 4.56E-01 1.33E+00 U WG 01 466553001 12/5/2018 Pb-212 -7.93E-01 1.26E+00 2.97E+00 U WG 01 466553001 12/5/2018 Pb-214 1.43E+01 2.26E+00 4.90E+00 WG 01 466553001 12/5/2018 Ru-103 -6.59E-01 4.31E-01 1.28E+00 U WG 01 466553001 12/5/2018 Ru-106 -1.70E+00 3.31E+00 1.06E+01 U WG 01 466553001 12/5/2018 Sb-124 -1.28E+00 8.38E-01 2.26E+00 U WG 01 466 553001 12/5/2018 Sb-125 -1.17E+00 1.14E+00 3.22E+00 U WG 01 466553001 12/5/2018 Se-75 4.38E-01 5.72E-01 1.80E+00 U WG 01 466553001 12/5/2018 Th-228 -7.93E-01 1.26E+00 2.97E+00 U WG 01 466553001 12/5/2018 Zn-65 -8.33E-02 9.02E-01 2.53E+00 U WG 01 466553001 12/5/2018 Zr-95 -2.88E-01 6.99E-01 2.23E+00 U WG 13 446065002 3/12/2018 Ac-228 4.68E+00 3.95E+00 7.17E+00 U WG 13 446065002 3/12/2018 Ag-108m -3.52E-01 4.00E-01 1.28E+00 U WG 13 446065002 3/12/2018 Ag-110m -1.49E-02 6.81E-01 2.16E+00 U WG 13 446065002 3/12/2018 Ba-140 -1.49E+00 2.38E+00 7.59E+00 U WG 13 446065002 3/12/2018 Be-7 -1.48E+01 8.09E+00 1.33E+01 U WG 13 446065002 3/12/2018 BETA 2.09E+00 1.07E+00 2.97E+00 U WG 13 446065002 3/12/2018 Bi-214 2.92E+01 2.98E+00 3.06E+00 X (1) WG 13 446065002 3/12/2018 Ce-141 -1.43E+00 1.43E+00 2.69E+00 U WG 13 446065002 3/12/2018 Ce-144 3.74E+00 3.29E+00 1.05E+01 U WG 13 446065002 3/12/2018 Co-57 -1.01E-01 4.15E-01 1.35E+00 U WG 13 446065002 3/12/2018 Co-58 -9.76E-02 4.65E-01 1.47E+00 U WG 13 446065002 3/12/2018 Co-60 2.80E-02 5.04E-01 1.67E+00 U WG 13 446065002 3/12/2018 Cr-51 1.35E+00 4.38E+00 1.50E+01 U WG 13 446065002 3/12/2018 Cs-134 -4.24E-01 5.48E-01 1.67E+00 U WG 13 446065002 3/12/2018 Cs-137 -2.18E+00 1.18E+00 2.10E+00 U WG 13 446065002 3/12/2018 Fe-59 -4.06E-01 9.80E-01 3.22E+00 U WG 13 446065002 3/12/2018 H-3 -1.28E+02 1.11E+02 3.78E+02 U WG 13 446065002 3/12/2018 I-131 8.50E-01 9.08E-01 3.07E+00 U WG 13 446065002 3/12/2018 K-40 -4.10E+00 8.95E+00 2.09E+01 U WG 13 446065002 3/12/2018 La-140 3.15E-01 8.82E-01 2.91E+00 U -231-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WG 13 446065002 3/12/2018 Mn-54 2.69E-01 4.96E-01 1.60E+00 U WG 13 446065002 3/12/2018 Nb-95 3.66E-01 6.93E-01 1.55E+00 U WG 13 446065002 3/12/2018 Pb-212 0.00E+00 1.69E+00 2.55E+00 U WG 13 446065 002 3/12/2018 Pb-214 3.49E+01 3.31E+00 3.23E+00 X (1) WG 13 446065002 3/12/2018 Ru-103 1.78E-01 6.66E-01 1.59E+00 U WG 13 446065002 3/12/2018 Ru-106 -6.11E+00 4.18E+00 1.21E+01 U WG 13 446065002 3/12/2018 Sb-124 -6.93E-01 1.20E+00 3.71E+00 U WG 13 446065002 3/12/2018 Sb-125 -9.30E-01 1.26E+00 4.09E+00 U WG 13 446065002 3/12/2018 Se-75 -8.04E-01 6.80E-01 1.98E+00 U WG 13 446065002 3/12/2018 Th-228 0.00E+00 1.69E+00 2.55E+00 U WG 13 446065002 3/12/2018 Zn-65 -5.02E-01 1.13E+00 3.23E+00 U WG 13 446065002 3/12/2018 Zr-95 1.17E+00 9.12E-01 2.68E+00 U WG 13 452123002 6/6/2018 Ac-228 1.51E-01 3.95E+00 5.77E+00 U WG 13 452123002 6/6/2018 Ag-108m 4.87E-01 4.07E-01 1.34E+00 U WG 13 452123002 6/6/2018 Ag-110m -2.84E-02 6.19E-01 2.08E+00 U WG 13 452123002 6/6/2018 Ba-140 -7.26E+00 4.38E+00 7.89E+00 U WG 13 452123002 6/6/2018 Be-7 6.12E+00 5.90E+00 1.34E+01 U WG 13 452123002 6/6/2018 BETA 2.08E+00 1.10E+00 3.46E+00 U WG 13 452123002 6/6/2018 Bi-214 0.00E+00 2.90E+00 4.23E+00 U WG 13 452123002 6/6/2018 Ce-141 8.52E-01 1.49E+00 2.43E+00 U WG 13 452123002 6/6/2018 Ce-144 2.06E+00 2.97E+00 9.55E+00 U WG 13 452123002 6/6/2018 Co-57 1.95E-01 3.83E-01 1.24E+00 U WG 13 452123002 6/6/2018 Co-58 1.11E-01 5.20E-01 1.58E+00 U WG 13 452123002 6/6/2018 Co-60 -1.88E+00 8.22E-01 1.50E+00 U WG 13 452123002 6/6/2018 Cr-51 8.57E+00 4.96E+00 1.60E+01 U WG 13 452123002 6/6/2018 Cs-134 1.16E+00 6.61E-01 1.76E+00 U WG 13 452123002 6/6/2018 Cs-137 1.39E-01 5.03E-01 1.63E+00 U WG 13 452123002 6/6/2018 Fe-59 1.07E-01 1.02E+00 3.39E+00 U WG 13 452123002 6/6/2018 H-3 9.68E+01 1.60E+02 5.10E+02 U WG 13 452123002 6/6/2018 I-131 9.44E-01 9.70E-01 3.25E+00 U WG 13 452123002 6/6/2018 K-40 6.25E-01 1.34E+01 1.57E+01 U WG 13 452123002 6/6/2018 La-140 6.33E-02 8.92E-01 2.88E+00 U WG 13 452123002 6/6/2018 Mn-54 -2.67E-01 4.57E-01 1.50E+00 U WG 13 452123002 6/6/2018 Nb-95 -1.42E-03 5.07E-01 1.61E+00 U WG 13 452123002 6/6/2018 Pb-212 1.58E+00 2.24E+00 2.70E+00 U WG 13 452123002 6/6/2018 Pb-214 0.00E+00 2.48E+00 4.22E+00 U WG 13 452123002 6/6/2018 Ru-103 3.45E-02 5.56E-01 1.63E+00 U WG 13 452123002 6/6/2018 Ru-106 3.69E+00 4.34E+00 1.41E+01 U WG 13 452123002 6/6/2018 Sb-124 1.96E+00 1.26E+00 4.31E+00 U WG 13 452123002 6/6/2018 Sb-125 -1.00E+00 1.22E+00 3.88E+00 U WG 13 452123002 6/6/2018 Se-75 -5.89E-01 5.94E-01 1.93E+00 U WG 13 452123002 6/6/2018 Th-228 1.58E+00 2.24E+00 2.70E+00 U WG 13 452123002 6/6/2018 Zn-65 -2.29E-01 9.60E-01 3.14E+00 U WG 13 452123002 6/6/2018 Zr-95 -1.02E-01 8.77E-01 2.77E+00 U WG 13 459451002 9/12/2018 Ac-228 0.00E+00 3.94E+00 4.81E+00 U WG 13 459451002 9/12/2018 Ag-108m -4.48E-02 3.70E-01 1.23E+00 U WG 13 459451002 9/12/2018 Ag-110m 6.03E-02 6.04E-01 1.93E+00 U WG 13 459451002 9/12/2018 Ba-140 2.56E+00 5.51E+00 1.11E+01 U WG 13 459451002 9/12/2018 Be-7 -5.59E+00 4.20E+00 1.27E+01 U -232-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WG 13 459451002 9/12/2018 BETA 2.48E+00 1.19E+00 3.34E+00 U WG 13 459451002 9/12/2018 Bi-214 2.34E-01 2.47E+00 2.86E+00 U WG 13 459451002 9/12/2018 Ce-141 2.97E-01 9.94E-01 2.98E+00 U WG 13 459451002 9/12/2018 Ce-144 -1.35E+00 3.03E+00 9.70E+00 U WG 13 459451002 9/12/2018 Co-57 4.11E-02 3.81E-01 1.24E+00 U WG 13 459451002 9/12/2018 Co-58 -5.85E-01 5.05E-01 1.47E+00 U WG 13 459451002 9/12/2018 Co-60 -1.93E-01 4.40E-01 1.41E+00 U WG 13 459451002 9/12/2018 Cr-51 3.89E+00 4.91E+00 1.68E+01 U WG 13 459451002 9/12/2018 Cs-134 4.06E-01 4.62E-01 1.51E+00 U WG 13 459451002 9/12/2018 Cs-137 -1.26E+00 1.05E+00 2.11E+00 U WG 13 459451002 9/12/2018 Fe-59 -1.23E-01 9.71E-01 3.24E+00 U WG 13 459451002 9/12/2018 H-3 7.96E+00 1.28E+02 4.19E+02 U WG 13 459451002 9/12/2018 I-131 3.20E-01 1.54E+00 5.22E+00 U WG 13 459451002 9/12/2018 K-40 1.12E+01 1.07E+01 1.39E+01 U WG 13 459451002 9/12/2018 La-140 7.91E-01 1.23E+00 4.09E+00 U WG 13 459451002 9/12/2018 Mn-54 4.55E-01 4.59E-01 1.48E+00 U WG 13 459451002 9/12/2018 Nb-95 -2.52E-01 4.73E-01 1.47E+00 U WG 13 459451002 9/12/2018 Pb-212 0.00E+00 1.97E+00 2.48E+00 U WG 13 459451002 9/12/2018 Pb-214 -9.75E-01 1.77E+00 3.52E+00 U WG 13 459451002 9/12/2018 Ru-103 -1.53E-01 5.50E-01 1.61E+00 U WG 13 459451002 9/12/2018 Ru-106 -4.22E+00 3.88E+00 1.17E+01 U WG 13 459451002 9/12/2018 Sb-124 1.69E+00 1.27E+00 4.21E+00 U WG 13 459451002 9/12/2018 Sb-125 2.61E-01 1.15E+00 3.87E+00 U WG 13 459451002 9/12/2018 Se-75 -8.94E-01 6.78E-01 1.94E+00 U WG 13 459451002 9/12/2018 Th-228 0.00E+00 1.97E+00 2.48E+00 U WG 13 459451002 9/12/2018 Zn-65 4.21E-01 8.75E-01 2.98E+00 U WG 13 459451002 9/12/2018 Zr-95 -4.04E-01 8.82E-01 2.77E+00 U WG 13 466553002 12/5/2018 Ac-228 -3.50E+00 3.19E+00 7.03E+00 U WG 13 466553002 12/5/2018 Ag-108m 9.65E-02 3.96E-01 1.33E+00 U WG 13 466553002 12/5/2018 Ag-110m 1.31E-01 5.99E-01 1.93E+00 U WG 13 466553002 12/5/2018 Ba-140 3.68E+00 2.29E+00 7.43E+00 U WG 13 466553002 12/5/2018 Be-7 1.49E+00 3.68E+00 1.24E+01 U WG 13 466553002 12/5/2018 BETA 1.17E+00 1.10E+00 3.39E+00 U WG 13 466553002 12/5/2018 Bi-214 0.00E+00 2.33E+00 4.24E+00 U WG 13 466553002 12/5/2018 Ce-141 -3.72E+00 1.24E+00 2.57E+00 U WG 13 466553002 12/5/2018 Ce-144 2.83E-01 3.12E+00 1.01E+01 U WG 13 466553002 12/5/2018 Co-57 1.94E-01 4.21E-01 1.36E+00 U WG 13 466553002 12/5/2018 Co-58 -2.05E-01 4.48E-01 1.23E+00 U WG 13 466553002 12/5/2018 Co-60 -2.35E-02 4.56E-01 1.52E+00 U WG 13 466553002 12/5/2018 Cr-51 2.15E+00 4.32E+00 1.48E+01 U WG 13 466553002 12/5/2018 Cs-134 -6.76E-01 5.55E-01 1.40E+00 U WG 13 466553002 12/5/2018 Cs-137 3.43E-01 4.29E-01 1.42E+00 U WG 13 466553002 12/5/2018 Fe-59 1.07E+00 8.94E-01 3.06E+00 U WG 13 466553002 12/5/2018 H-3 4.01E+02 1.44E+02 4.12E+02 U WG 13 466553002 12/5/2018 I-131 -4.06E-01 7.96E-01 2.64E+00 U WG 13 466553002 12/5/2018 K-40 0.00E+00 1.60E+01 1.31E+01 U WG 13 466553002 12/5/2018 La-140 -1.34E+00 7.25E-01 1.81E+00 U WG 13 466553002 12/5/2018 Mn-54 -5.15E-01 4.67E-01 1.37E+00 U WG 13 466553002 12/5/2018 Nb-95 0.00E+00 7.26E-01 1.43E+00 U WG 13 466553002 12/5/2018 Pb-212 4.44E-01 1.72E+00 3.57E+00 U -233-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WG 13 466553002 12/5/2018 Pb-214 3.49E+00 2.60E+00 4.20E+00 U WG 13 466553002 12/5/2018 Ru-103 -1.69E-02 5.70E-01 1.34E+00 U WG 13 466553002 12/5/2018 Ru-106 -3.89E+00 4.01E+00 1.23E+01 U WG 13 466553002 12/5/2018 Sb-124 5.73E-01 8.44E-01 2.87E+00 U WG 13 466553002 12/5/2018 Sb-125 1.70E+00 1.24E+00 4.09E+00 U WG 13 466553002 12/5/2018 Se-75 -1.60E-01 5.79E-01 1.98E+00 U WG 13 466553002 12/5/2018 Th-228 4.44E-01 1.72E+00 3.57E+00 U WG 13 466553002 12/5/2018 Zn-65 -3.40E-01 8.62E-01 2.84E+00 U WG 13 466553002 12/5/2018 Zr-95 -2.21E+00 1.33E+00 2.52E+00 U WG 14 446065003 3/12/2018 Ac-228 0.00E+00 3.46E+00 7.01E+00 U WG 14 446065003 3/12/2018 Ag-108m -2.33E-01 4.20E-01 1.37E+00 U WG 14 446065003 3/12/2018 Ag-110m -4.13E-01 6.98E-01 2.30E+00 U WG 14 446065003 3/12/2018 Ba-140 -4.05E-01 2.57E+00 8.41E+00 U WG 14 446065003 3/12/2018 Be-7 -1.08E+01 5.11E+00 1.36E+01 U WG 14 446065003 3/12/2018 BETA 1.43E+00 9.67E-01 2.83E+00 U WG 14 446065003 3/12/2018 Bi-214 0.00E+00 3.13E+00 5.21E+00 U WG 14 446065003 3/12/2018 Ce-141 -3.58E+00 1.72E+00 2.95E+00 U WG 14 446065003 3/12/2018 Ce-144 -8.40E-02 3.42E+00 1.11E+01 U WG 14 446065003 3/12/2018 Co-57 1.35E-02 4.53E-01 1.48E+00 U WG 14 446065003 3/12/2018 Co-58 -3.34E-01 5.40E-01 1.65E+00 U WG 14 446065003 3/12/2018 Co-60 -5.17E-01 8.02E-01 1.93E+00 U WG 14 446065003 3/12/2018 Cr-51 -2.93E+00 5.21E+00 1.56E+01 U WG 14 446065003 3/12/2018 Cs-134 -2.36E-01 5.19E-01 1.61E+00 U WG 14 446065003 3/12/2018 Cs-137 -1.51E-01 5.71E-01 1.83E+00 U WG 14 446065003 3/12/2018 Fe-59 3.04E-01 1.34E+00 3.98E+00 U WG 14 446065003 3/12/2018 H-3 -4.66E+01 1.10E+02 3.67E+02 U WG 14 446065003 3/12/2018 I-131 3.63E-01 9.33E-01 3.17E+00 U WG 14 446065003 3/12/2018 K-40 1.34E+01 1.41E+01 1.87E+01 U WG 14 446065003 3/12/2018 La-140 -8.29E-01 1.02E+00 3.07E+00 U WG 14 446065003 3/12/2018 Mn-54 -2.70E-01 5.37E-01 1.66E+00 U WG 14 446065003 3/12/2018 Nb-95 1.45E-01 5.28E-01 1.71E+00 U WG 14 446065003 3/12/2018 Pb-212 1.85E+00 2.34E+00 3.59E+00 U WG 14 446065003 3/12/2018 Pb-214 0.00E+00 2.91E+00 3.83E+00 U WG 14 446065003 3/12/2018 Ru-103 -1.41E+00 1.08E+00 1.77E+00 U WG 14 446065003 3/12/2018 Ru-106 -4.06E+00 4.57E+00 1.40E+01 U WG 14 446065003 3/12/2018 Sb-124 -1.65E-01 1.69E+00 4.72E+00 U WG 14 446065003 3/12/2018 Sb-125 -1.89E+00 1.40E+00 4.24E+00 U WG 14 446065003 3/12/2018 Se-75 -1.01E+00 7.76E-01 2.21E+00 U WG 14 446065003 3/12/2018 Th-228 1.85E+00 2.34E+00 3.59E+00 U WG 14 446065003 3/12/2018 Zn-65 1.89E-01 1.10E+00 3.69E+00 U WG 14 446065003 3/12/2018 Zr-95 -7.39E-02 9.22E-01 2.94E+00 U WG 14 452123003 6/6/2018 Ac-228 -3.60E-01 3.97E+00 7.09E+00 U WG 14 452123003 6/6/2018 Ag-108m -9.99E-02 3.83E-01 1.27E+00 U WG 14 452123003 6/6/2018 Ag-110m -4.44E-01 6.66E-01 2.03E+00 U WG 14 452123003 6/6/2018 Ba-140 -1.11E+00 2.42E+00 7.83E+00 U WG 14 452123003 6/6/2018 Be-7 -4.80E+00 3.95E+00 1.21E+01 U WG 14 452123003 6/6/2018 BETA 1.32E+00 7.56E-01 2.33E+00 U WG 14 452123003 6/6/2018 Bi-214 9.09E+00 2.41E+00 3.09E+00 WG 14 452123003 6/6/2018 Ce-141 -7.71E+00 2.19E+00 2.57E+00 U -234-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WG 14 452123003 6/6/2018 Ce-144 2.27E+00 3.18E+00 9.58E+00 U WG 14 452123003 6/6/2018 Co-57 -4.19E-01 4.03E-01 1.25E+00 U WG 14 452123003 6/6/2018 Co-58 -6.53E-01 4.76E-01 1.35E+00 U WG 14 452123003 6/6/2018 Co-60 -4.11E-01 4.25E-01 1.29E+00 U WG 14 452123003 6/6/2018 Cr-51 2.47E+00 4.12E+00 1.41E+01 U WG 14 452123003 6/6/2018 Cs-134 2.83E-01 5.24E-01 1.53E+00 U WG 14 452123003 6/6/2018 Cs-137 -2.33E+00 1.16E+00 1.98E+00 U WG 14 452123003 6/6/2018 Fe-59 -9.48E-02 1.02E+00 3.16E+00 U WG 14 452123003 6/6/2018 H-3 1.39E+01 1.50E+02 4.92E+02 U WG 14 452123003 6/6/2018 I-131 -2.61E-01 8.96E-01 3.01E+00 U WG 14 452123003 6/6/2018 K-40 1.05E+00 1.35E+01 1.38E+01 U WG 14 452123003 6/6/2018 La-140 -1.20E+00 9.55E-01 2.74E+00 U WG 14 452123003 6/6/2018 Mn-54 -7.95E-01 5.05E-01 1.39E+00 U WG 14 452123003 6/6/2018 Nb-95 -2.92E-01 4.71E-01 1.46E+00 U WG 14 452123003 6/6/2018 Pb-212 5.60E-01 1.74E+00 3.34E+00 U WG 14 452123003 6/6/2018 Pb-214 0.00E+00 2.20E+00 4.52E+00 U WG 14 452123003 6/6/2018 Ru-103 -5.10E-01 5.58E-01 1.56E+00 U WG 14 452123003 6/6/2018 Ru-106 4.53E+00 4.20E+00 1.38E+01 U WG 14 452123003 6/6/2018 Sb-124 -5.75E-01 1.03E+00 3.17E+00 U WG 14 452123003 6/6/2018 Sb-125 -5.68E-01 1.16E+00 3.82E+00 U WG 14 452123003 6/6/2018 Se-75 1.38E-02 5.73E-01 1.79E+00 U WG 14 452123003 6/6/2018 Th-228 5.60E-01 1.74E+00 3.34E+00 U WG 14 452123003 6/6/2018 Zn-65 -1.22E+00 1.09E+00 2.87E+00 U WG 14 452123003 6/6/2018 Zr-95 -1.38E+00 8.75E-01 2.42E+00 U WG 14 459451003 9/12/2018 Ac-228 -2.91E+00 2.80E+00 6.65E+00 U WG 14 459451003 9/12/2018 Ag-108m -1.19E+00 6.68E-01 1.26E+00 U WG 14 459451003 9/12/2018 Ag-110m -6.61E-01 5.96E-01 1.79E+00 U WG 14 459451003 9/12/2018 Ba-140 3.00E+00 3.45E+00 1.16E+01 U WG 14 459451003 9/12/2018 Be-7 3.55E+00 4.06E+00 1.37E+01 U WG 14 459451003 9/12/2018 BETA 1.59E+00 8.36E-01 2.26E+00 U WG 14 459451003 9/12/2018 Bi-214 3.43E+01 3.16E+00 2.91E+00 WG 14 459451003 9/12/2018 Ce-141 -1.62E+00 1.12E+00 3.29E+00 U WG 14 459451003 9/12/2018 Ce-144 -2.18E+00 3.40E+00 1.07E+01 U WG 14 459451003 9/12/2018 Co-57 8.99E-02 4.28E-01 1.38E+00 U WG 14 459451003 9/12/2018 Co-58 -7.33E-01 4.79E-01 1.37E+00 U WG 14 459451003 9/12/2018 Co-60 -7.08E-01 8.02E-01 1.62E+00 U WG 14 459451003 9/12/2018 Cr-51 -4.86E-01 5.05E+00 1.73E+01 U WG 14 459451003 9/12/2018 Cs-134 5.38E-01 4.65E-01 1.53E+00 U WG 14 459451003 9/12/2018 Cs-137 1.51E-01 4.73E-01 1.42E+00 U WG 14 459451003 9/12/2018 Fe-59 8.71E-01 9.46E-01 3.10E+00 U WG 14 459451003 9/12/2018 H-3 -3.57E+01 1.22E+02 4.06E+02 U WG 14 459451003 9/12/2018 I-131 -2.47E+00 1.69E+00 5.23E+00 U WG 14 459451003 9/12/2018 K-40 -1.58E+01 9.64E+00 2.30E+01 U WG 14 459451003 9/12/2018 La-140 -4.56E+00 1.67E+00 2.77E+00 U WG 14 459451003 9/12/2018 Mn-54 -3.49E-01 4.33E-01 1.35E+00 U WG 14 459451003 9/12/2018 Nb-95 9.23E-01 5.06E-01 1.61E+00 U WG 14 459451003 9/12/2018 Pb-212 2.04E+00 1.77E+00 2.75E+00 U WG 14 459451003 9/12/2018 Pb-214 3.41E+01 3.25E+00 3.51E+00 WG 14 459451003 9/12/2018 Ru-103 -5.49E-01 5.34E-01 1.70E+00 U WG 14 459451003 9/12/2018 Ru-106 -1.31E+00 3.63E+00 1.19E+01 U -235-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WG 14 459451003 9/12/2018 Sb-124 3.63E+00 1.92E+00 3.95E+00 U WG 14 459451003 9/12/2018 Sb-125 1.23E+00 1.24E+00 4.16E+00 U WG 14 459451003 9/12/2018 Se-75 1.15E+00 7.48E-01 2.26E+00 U WG 14 4594 51003 9/12/2018 Th-228 2.04E+00 1.77E+00 2.75E+00 U WG 14 459451003 9/12/2018 Zn-65 2.71E-01 9.37E-01 2.72E+00 U WG 14 459451003 9/12/2018 Zr-95 -8.28E-02 8.18E-01 2.68E+00 U WG 14 466553003 12/5/2018 Ac-228 1.18E+00 3.58E+00 9.86E+00 U WG 14 466553003 12/5/2018 Ag-108m -1.39E+00 7.04E-01 1.96E+00 U WG 14 466553003 12/5/2018 Ag-110m 1.50E+00 1.08E+00 3.19E+00 U WG 14 466553003 12/5/2018 Ba-140 8.10E+00 5.44E+00 1.17E+01 U WG 14 466553003 12/5/2018 Be-7 -1.20E+01 6.93E+00 1.98E+01 U WG 14 466553003 12/5/2018 BETA 4.38E+00 1.09E+00 2.32E+00 WG 14 466553003 12/5/2018 Bi-214 3.84E+02 1.80E+01 4.04E+00 WG 14 466553003 12/5/2018 Ce-141 -1.82E+00 1.47E+00 4.35E+00 U WG 14 466553003 12/5/2018 Ce-144 -1.12E+01 5.70E+00 1.55E+01 U WG 14 466553003 12/5/2018 Co-57 8.42E-01 6.51E-01 1.99E+00 U WG 14 466553003 12/5/2018 Co-58 -1.83E-01 7.77E-01 2.29E+00 U WG 14 466553003 12/5/2018 Co-60 4.55E-02 8.21E-01 2.34E+00 U WG 14 466553003 12/5/2018 Cr-51 7.60E-01 6.53E+00 2.18E+01 U WG 14 466553003 12/5/2018 Cs-134 5.72E-01 7.53E-01 2.55E+00 U WG 14 466553003 12/5/2018 Cs-137 3.05E-01 8.14E-01 2.32E+00 U WG 14 466553003 12/5/2018 Fe-59 2.50E-01 1.42E+00 4.71E+00 U WG 14 466553003 12/5/2018 H-3 8.47E+01 1.28E+02 4.09E+02 U WG 14 466553003 12/5/2018 I-131 6.71E-01 1.28E+00 4.26E+00 U WG 14 466553003 12/5/2018 K-40 1.35E+01 1.38E+01 3.00E+01 U WG 14 466553003 12/5/2018 La-140 1.07E+00 1.27E+00 4.13E+00 U WG 14 466553003 12/5/2018 Mn-54 -9.55E-01 8.09E-01 2.21E+00 U WG 14 466553003 12/5/2018 Nb-95 0.00E+00 1.51E+00 3.06E+00 U WG 14 466553003 12/5/2018 Pb-212 1.87E+00 2.08E+00 4.19E+00 U WG 14 466553003 12/5/2018 Pb-214 4.07E+02 1.80E+01 5.37E+00 WG 14 466553003 12/5/2018 Ru-103 6.29E-01 1.10E+00 2.31E+00 U WG 14 4665530 03 12/5/2018 Ru-106 -8.65E-01 5.77E+00 1.84E+01 U WG 14 466553003 12/5/2018 Sb-124 9.86E-01 1.57E+00 5.36E+00 U WG 14 466553003 12/5/2018 Sb-125 -1.81E+00 2.04E+00 6.43E+00 U WG 14 466553003 12/5/2018 Se-75 9.88E-01 9.61E-01 3.18E+00 U WG 14 466553003 12/5/2018 Th-228 1.87E+00 2.08E+00 4.19E+00 U WG 14 466553003 12/5/2018 Zn-65 1.01E+00 1.63E+00 4.80E+00 U WG 14 466553003 12/5/2018 Zr-95 5.43E-01 1.28E+00 3.86E+00 U -236-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 01 442388001 1/18/2018 Ac-228 -2.07E+00 3.59E+00 6.54E+00 U WS 01 442388001 1/18/2018 Ag-108m -1.86E-01 3.70E-01 1.21E+00 U WS 01 442388001 1/18/2018 Ag-110m -9.74E-01 7.17E-01 1.73E+00 U WS 01 442388001 1/18/2018 Ba-140 0.00E+00 5.06E+00 8.15E+00 U UI WS 01 442388001 1/18/2018 Be-7 -4.22E-01 3.76E+00 1.25E+01 U WS 01 442388001 1/18/2018 Bi-214 -8.09E-01 1.97E+00 3.73E+00 U WS 01 442388001 1/18/2018 Ce-141 6.38E-01 8.26E-01 2.65E+00 U WS 01 442388001 1/18/2018 Ce-144 -6.64E+00 3.33E+00 9.07E+00 U WS 01 442388001 1/18/2018 Co-57 -2.14E-01 3.92E-01 1.25E+00 U WS 01 442388001 1/18/2018 Co-58 1.73E-01 4.67E-01 1.52E+00 U WS 01 442388001 1/18/2018 Co-60 1.14E-02 4.99E-01 1.66E+00 U WS 01 442388001 1/18/2018 Cr-51 -2.66E+00 4.16E+00 1.38E+01 U WS 01 442388001 1/18/2018 Cs-134 -2.01E-02 4.97E-01 1.59E+00 U WS 01 442388001 1/18/2018 Cs-137 1.36E-01 4.46E-01 1.47E+00 U WS 01 442388001 1/18/2018 Fe-59 8.68E-01 1.15E+00 3.51E+00 U WS 01 442388001 1/18/2018 I-131 6.10E-01 9.29E-01 2.86E+00 U WS 01 442388001 1/18/2018 K-40 3.57E+02 2.37E+01 1.59E+01 WS 01 442388001 1/18/2018 La-140 -2.69E-01 7.70E-01 2.45E+00 U WS 01 442388001 1/18/2018 Mn-54 -6.86E-01 7.54E-01 1.31E+00 U WS 01 442388001 1/18/2018 Nb-95 -3.70E-01 4.41E-01 1.34E+00 U WS 01 442388001 1/18/2018 Pb-212 0.00E+00 2.19E+00 3.40E+00 U WS 01 442388001 1/18/2018 Pb-214 -3.82E+00 2.02E+00 3.39E+00 U WS 01 442388001 1/18/2018 Ru-103 -9.53E-01 5.70E-01 1.44E+00 U WS 01 442388001 1/18/2018 Ru-106 -2.50E+00 3.95E+00 1.25E+01 U WS 01 442388001 1/18/2018 Sb-124 4.86E-02 9.56E-01 2.74E+00 U WS 01 442388001 1/18/2018 Sb-125 -3.10E+00 1.89E+00 3.92E+00 U WS 01 442388001 1/18/2018 Se-75 8.67E-01 6.26E-01 1.92E+00 U WS 01 442388001 1/18/2018 Th-228 0.00E+00 2.19E+00 3.40E+00 U WS 01 442388001 1/18/2018 Zn-65 7.40E-01 1.08E+00 3.30E+00 U WS 01 442388001 1/18/2018 Zr-95 3.45E-01 8.17E-01 2.67E+00 U WS 01 444567001 2/14/2018 Ac-228 -4.48E+00 3.25E+00 6.32E+00 U WS 01 444567001 2/14/2018 Ag-108m -7.10E-01 4.06E-01 1.18E+00 U WS 01 444567001 2/14/2018 Ag-110m -1.16E-01 5.65E-01 1.78E+00 U WS 01 444567001 2/14/2018 Ba-140 -2.11E+00 2.85E+00 9.05E+00 U WS 01 444567001 2/14/2018 Be-7 1.58E+00 3.79E+00 1.27E+01 U WS 01 444567001 2/14/2018 Bi-214 1.65E+00 2.28E+00 2.83E+00 U WS 01 444567001 2/14/2018 Ce-141 -4.18E+00 1.30E+00 2.52E+00 U WS 01 444567001 2/14/2018 Ce-144 2.34E+00 2.81E+00 9.08E+00 U WS 01 444567001 2/14/2018 Co-57 8.94E-01 4.30E-01 1.27E+00 U WS 01 444567001 2/14/2018 Co-58 -7.83E-01 4.53E-01 1.22E+00 U WS 01 444567001 2/14/2018 Co-60 -2.81E-01 4.45E-01 1.42E+00 U WS 01 444567001 2/14/2018 Cr-51 -7.03E+00 4.56E+00 1.40E+01 U WS 01 444567001 2/14/2018 Cs-134 9.32E-01 4.93E-01 1.54E+00 U WS 01 444567001 2/14/2018 Cs-137 1.06E+00 9.86E-01 1.35E+00 U WS 01 444567001 2/14/2018 Fe-59 -4.52E-02 9.60E-01 2.84E+00 U WS 01 444567001 2/14/2018 I-131 1.68E+00 1.22E+00 4.03E+00 U WS 01 444567001 2/14/2018 K-40 3.60E+02 2.43E+01 1.26E+01 WS 01 444567001 2/14/2018 La-140 -2.27E+00 1.11E+00 2.77E+00 U WS 01 444567001 2/14/2018 Mn-54 1.42E-01 4.07E-01 1.31E+00 U WS 01 444567001 2/14/2018 Nb-95 -2.65E-03 4.85E-01 1.56E+00 U -237-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 01 444567001 2/14/2018 Pb-212 -3.94E-01 1.36E+00 3.10E+00 U WS 01 444567001 2/14/2018 Pb-214 -1.66E+00 1.69E+00 3.19E+00 U WS 01 444567001 2/14/2018 Ru-103 -8.68E-02 5.11E-01 1.51E+00 U WS 01 444567001 2/14/2018 Ru-106 -3.50E+00 3.60E+00 1.11E+01 U WS 01 444567001 2/14/2018 Sb-124 -1.02E+00 1.14E+00 3.42E+00 U WS 01 444567001 2/14/2018 Sb-125 -3.54E-01 1.10E+00 3.66E+00 U WS 01 444567001 2/14/2018 Se-75 3.92E-01 5.92E-01 1.85E+00 U WS 01 444567001 2/14/2018 Th-228 -3.94E-01 1.36E+00 3.10E+00 U WS 01 444567001 2/14/2018 Zn-65 -3.60E-02 9.50E-01 2.81E+00 U WS 01 444567001 2/14/2018 Zr-95 -2.63E+00 1.66E+00 2.55E+00 U WS 01 446138001 3/12/2018 Ac-228 -4.21E+00 3.41E+00 6.96E+00 U WS 01 446138001 3/12/2018 Ag-108m -2.24E-01 3.77E-01 1.23E+00 U WS 01 446138001 3/12/2018 Ag-110m 6.63E-02 6.18E-01 1.97E+00 U WS 01 446138001 3/12/2018 Ba-140 3.16E+00 2.70E+00 8.90E+00 U WS 01 446138001 3/12/2018 Be-7 -8.17E+00 7.55E+00 1.35E+01 U WS 01 446138001 3/12/2018 Bi-214 1.76E+00 2.32E+00 3.82E+00 U WS 01 446138001 3/12/2018 Ce-141 -2.35E+00 1.49E+00 2.75E+00 U WS 01 446138001 3/12/2018 Ce-144 -1.57E+00 3.09E+00 9.85E+00 U WS 01 446138001 3/12/2018 Co-57 4.12E-01 4.02E-01 1.30E+00 U WS 01 446138001 3/12/2018 Co-58 2.23E-01 4.85E-01 1.57E+00 U WS 01 446138001 3/12/2018 Co-60 6.19E-02 4.65E-01 1.55E+00 U WS 01 446138001 3/12/2018 Cr-51 -6.21E+00 4.63E+00 1.46E+01 U WS 01 446138001 3/12/2018 Cs-134 -8.92E-01 5.45E-01 1.49E+00 U WS 01 446138001 3/12/2018 Cs-137 -2.05E+00 1.15E+00 2.00E+00 U WS 01 446138001 3/12/2018 Fe-59 -8.27E-01 9.74E-01 3.09E+00 U WS 01 446138001 3/12/2018 I-131 -1.78E+00 1.04E+00 3.06E+00 U WS 01 446138001 3/12/2018 K-40 3.43E+02 2.43E+01 1.55E+01 WS 01 446138001 3/12/2018 La-140 -1.11E+00 8.37E-01 2.35E+00 U WS 01 446138001 3/12/2018 Mn-54 -9.11E-02 4.57E-01 1.45E+00 U WS 01 446138001 3/12/2018 Nb-95 0.00E+00 8.91E-01 1.44E+00 U WS 01 446138001 3/12/2018 Pb-212 8.62E-01 1.79E+00 3.43E+00 U WS 01 446138001 3/12/2018 Pb-214 -4.40E-01 1.77E+00 3.46E+00 U WS 01 446138001 3/12/2018 Ru-103 6.85E-01 5.42E-01 1.62E+00 U WS 01 446138001 3/12/2018 Ru-106 9.14E+00 4.70E+00 1.46E+01 U WS 01 446138001 3/12/2018 Sb-124 3.54E-01 1.07E+00 3.51E+00 U WS 01 446138001 3/12/2018 Sb-125 5.25E-01 1.19E+00 4.01E+00 U WS 01 446138001 3/12/2018 Se-75 8.63E-01 6.96E-01 2.14E+00 U WS 01 446138001 3/12/2018 Th-228 8.62E-01 1.79E+00 3.43E+00 U WS 01 446138001 3/12/2018 Zn-65 -6.60E-01 9.45E-01 3.03E+00 U WS 01 446138001 3/12/2018 Zr-95 3.18E-01 7.47E-01 2.44E+00 U WS 01 451294001 3/12/2018 H-3 1.93E+02 1.47E+02 4.47E+02 U WS 01 448108001 4/11/2018 Ac-228 -2.75E+00 3.58E+00 6.37E+00 U WS 01 448108001 4/11/2018 Ag-108m 7.26E-01 4.48E-01 1.45E+00 U WS 01 448108001 4/11/2018 Ag-110m -3.45E-01 5.72E-01 1.76E+00 U WS 01 448108001 4/11/2018 Ba-140 -1.78E+00 2.44E+00 7.74E+00 U WS 01 448108001 4/11/2018 Be-7 6.80E-02 3.95E+00 1.32E+01 U WS 01 448108001 4/11/2018 Bi-214 2.28E+00 2.04E+00 3.06E+00 U -238-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 01 448108001 4/11/2018 Ce-141 9.23E-01 9.99E-01 3.15E+00 U WS 01 448108001 4/11/2018 Ce-144 6.56E+00 5.38E+00 1.09E+01 U WS 01 448108001 4/11/2018 Co-57 -4.98E-01 4.72E-01 1.43E+00 U WS 01 448108001 4/11/2018 Co-58 1.59E-01 4.73E-01 1.39E+00 U WS 01 448108001 4/11/2018 Co-60 -1.02E-01 4.51E-01 1.49E+00 U WS 01 448108001 4/11/2018 Cr-51 3.60E+00 4.72E+00 1.60E+01 U WS 01 448108001 4/11/2018 Cs-134 1.54E+00 8.18E-01 1.76E+00 U WS 01 448108001 4/11/2018 Cs-137 -1.55E-01 4.66E-01 1.50E+00 U WS 01 448108001 4/11/2018 Fe-59 1.98E+00 1.02E+00 3.37E+00 U WS 01 448108001 4/11/2018 I-131 5.83E-01 9.90E-01 3.39E+00 U WS 01 448108001 4/11/2018 K-40 3.05E+02 2.44E+01 1.23E+01 WS 01 448108001 4/11/2018 La-140 0.00E+00 2.54E+00 2.61E+00 U WS 01 448108001 4/11/2018 Mn-54 -6.41E-01 5.24E-01 1.33E+00 U WS 01 448108001 4/11/2018 Nb-95 2.03E-01 4.90E-01 1.61E+00 U WS 01 448108001 4/11/2018 Pb-212 5.96E-01 1.88E+00 3.32E+00 U WS 01 448108001 4/11/2018 Pb-214 -5.35E+00 2.03E+00 3.54E+00 U WS 01 448108001 4/11/2018 Ru-103 4.33E-02 5.48E-01 1.63E+00 U WS 01 448108001 4/11/2018 Ru-106 4.00E+00 4.58E+00 1.37E+01 U WS 01 448108001 4/11/2018 Sb-124 1.24E+00 1.10E+00 3.77E+00 U WS 01 448108001 4/11/2018 Sb-125 5.03E-02 1.25E+00 4.17E+00 U WS 01 448108001 4/11/2018 Se-75 7.34E-01 6.14E-01 2.07E+00 U WS 01 448108001 4/11/2018 Th-228 5.96E-01 1.89E+00 3.32E+00 U WS 01 448108001 4/11/2018 Zn-65 1.24E-01 1.00E+00 3.03E+00 U WS 01 448108001 4/11/2018 Zr-95 1.22E+00 9.13E-01 2.97E+00 U WS 01 450612001 5/14/2018 Ac-228 3.87E+00 4.68E+00 8.24E+00 U WS 01 450612001 5/14/2018 Ag-108m 1.32E-01 4.77E-01 1.56E+00 U WS 01 450612001 5/14/2018 Ag-110m 1.45E-02 6.97E-01 2.32E+00 U WS 01 450612001 5/14/2018 Ba-140 -6.08E-01 3.03E+00 9.62E+00 U WS 01 450612001 5/14/2018 Be-7 1.76E+00 4.69E+00 1.53E+01 U WS 01 450612001 5/14/2018 Bi-214 5.23E-01 2.74E+00 4.12E+00 U WS 01 450612001 5/14/2018 Ce-141 0.00E+00 1.96E+00 2.86E+00 U WS 01 450612001 5/14/2018 Ce-144 -2.62E+00 3.81E+00 1.16E+01 U WS 01 450612001 5/14/2018 Co-57 4.92E-01 4.98E-01 1.56E+00 U WS 01 450612001 5/14/2018 Co-58 -1.97E-01 5.11E-01 1.67E+00 U WS 01 450612001 5/14/2018 Co-60 7.40E-01 5.77E-01 1.90E+00 U WS 01 450612001 5/14/2018 Cr-51 1.42E+01 7.79E+00 1.67E+01 U WS 01 450612001 5/14/2018 Cs-134 6.53E-01 5.71E-01 1.92E+00 U WS 01 450612001 5/14/2018 Cs-137 4.63E-01 5.41E-01 1.85E+00 U WS 01 450612001 5/14/2018 Fe-59 -2.41E-01 1.17E+00 3.78E+00 U WS 01 450612001 5/14/2018 I-131 -4.28E-01 1.09E+00 3.54E+00 U WS 01 450612001 5/14/2018 K-40 3.34E+02 2.55E+01 1.78E+01 WS 01 450612001 5/14/2018 La-140 -5.02E-01 9.41E-01 3.02E+00 U WS 01 450612001 5/14/2018 Mn-54 -1.08E-01 4.93E-01 1.63E+00 U WS 01 450612001 5/14/2018 Nb-95 -1.32E+00 9.14E-01 1.76E+00 U WS 01 450612001 5/14/2018 Pb-212 3.70E+00 2.25E+00 4.08E+00 U WS 01 450612001 5/14/2018 Pb-214 -1.09E+00 2.16E+00 4.26E+00 U WS 01 450612001 5/14/2018 Ru-103 -6.88E-01 6.08E-01 1.82E+00 U WS 01 450612001 5/14/2018 Ru-106 -6.86E+00 4.94E+00 1.39E+01 U WS 01 450612001 5/14/2018 Sb-124 8.67E-01 1.26E+00 4.33E+00 U WS 01 450612001 5/14/2018 Sb-125 9.09E-01 1.42E+00 4.65E+00 U -239-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 01 450612001 5/14/2018 Se-75 -5.36E-01 6.90E-01 2.24E+00 U WS 01 450612001 5/14/2018 Th-228 3.70E+00 2.25E+00 4.08E+00 U WS 01 450612001 5/14/2018 Zn-65 -1.63E+00 1.19E+00 3.41E+00 U WS 01 450612001 5/14/2018 Zr-95 1.12E+00 1.04E+00 3.50E+00 U WS 01 452646001 6/12/2018 Ac-228 -3.67E+00 3.07E+00 5.81E+00 U WS 01 452646001 6/12/2018 Ag-108m -2.18E-01 3.33E-01 1.09E+00 U WS 01 452646001 6/12/2018 Ag-110m -1.93E-01 5.49E-01 1.72E+00 U WS 01 452646001 6/12/2018 Ba-140 -2.56E+00 2.27E+00 6.98E+00 U WS 01 452646001 6/12/2018 Be-7 2.56E+00 3.30E+00 1.11E+01 U WS 01 452646001 6/12/2018 Bi-214 0.00E+00 1.64E+00 3.04E+00 U WS 01 452646001 6/12/2018 Ce-141 2.16E-01 1.43E+00 2.33E+00 U WS 01 452646001 6/12/2018 Ce-144 -2.48E+00 2.57E+00 7.99E+00 U WS 01 452646001 6/12/2018 Co-57 -2.73E-01 3.31E-01 1.04E+00 U WS 01 452646001 6/12/2018 Co-58 -8.39E-01 7.27E-01 1.23E+00 U WS 01 452646001 6/12/2018 Co-60 2.97E-01 4.28E-01 1.44E+00 U WS 01 452646001 6/12/2018 Cr-51 8.34E+00 4.07E+00 1.28E+01 U WS 01 452646001 6/12/2018 Cs-134 -5.19E-01 4.58E-01 1.36E+00 U WS 01 452646001 6/12/2018 Cs-137 -1.64E-01 3.87E-01 1.24E+00 U WS 01 452646001 6/12/2018 Fe-59 1.03E+00 8.60E-01 2.91E+00 U WS 01 452646001 6/12/2018 I-131 -5.32E-01 9.91E-01 2.96E+00 U WS 01 452646001 6/12/2018 K-40 3.11E+02 2.22E+01 1.22E+01 WS 01 452646001 6/12/2018 La-140 -7.79E-01 7.86E-01 2.36E+00 U WS 01 452646001 6/12/2018 Mn-54 -1.42E-02 3.91E-01 1.25E+00 U WS 01 452646001 6/12/2018 Nb-95 -5.56E-01 6.33E-01 1.36E+00 U WS 01 452646001 6/12/2018 Pb-212 1.59E-01 1.63E+00 2.14E+00 U WS 01 452646001 6/12/2018 Pb-214 0.00E+00 1.91E+00 2.97E+00 U WS 01 452646001 6/12/2018 Ru-103 1.03E-01 4.43E-01 1.33E+00 U WS 01 452646001 6/12/2018 Ru-106 3.44E-01 3.20E+00 1.05E+01 U WS 01 452646001 6/12/2018 Sb-124 -5.81E-01 1.03E+00 3.21E+00 U WS 01 452646001 6/12/2018 Sb-125 -5.49E-01 9.67E-01 3.18E+00 U WS 01 452646001 6/12/2018 Se-75 2.95E-01 5.66E-01 1.64E+00 U WS 01 452646001 6/12/2018 Th-228 1.59E-01 1.63E+00 2.14E+00 U WS 01 452646001 6/12/2018 Zn-65 -5.60E-01 8.69E-01 2.83E+00 U WS 01 452646001 6/12/2018 Zr-95 5.41E-01 6.93E-01 2.27E+00 U WS 01 457764001 6/12/2018 H-3 1.05E+02 1.82E+02 5.82E+02 U WS 01 454753001 7/10/2018 Ac-228 1.87E+00 3.38E+00 5.61E+00 U WS 01 454753001 7/10/2018 Ag-108m -7.83E-02 3.03E-01 1.02E+00 U WS 01 454753001 7/10/2018 Ag-110m -5.79E-01 5.19E-01 1.57E+00 U WS 01 454753001 7/10/2018 Ba-140 3.38E+00 4.38E+00 1.47E+01 U WS 01 454753001 7/10/2018 Be-7 -2.98E+00 3.67E+00 1.19E+01 U WS 01 454753001 7/10/2018 Bi-214 -1.77E+00 1.70E+00 2.80E+00 U WS 01 454753001 7/10/2018 Ce-141 1.04E+00 1.06E+00 3.11E+00 U WS 01 454753001 7/10/2018 Ce-144 6.60E-01 2.63E+00 8.46E+00 U WS 01 454753001 7/10/2018 Co-57 -5.61E-03 3.51E-01 1.13E+00 U WS 01 454753001 7/10/2018 Co-58 6.04E-01 4.73E-01 1.39E+00 U WS 01 454753001 7/10/2018 Co-60 4.32E-02 3.91E-01 1.18E+00 U WS 01 454753001 7/10/2018 Cr-51 1.42E+00 4.90E+00 1.68E+01 U WS 01 454753001 7/10/2018 Cs-134 3.67E-01 4.05E-01 1.33E+00 U -240-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 01 454753001 7/10/2018 Cs-137 -1.30E-01 3.46E-01 1.13E+00 U WS 01 454753001 7/10/2018 Fe-59 -2.40E-01 9.16E-01 2.90E+00 U WS 01 454753001 7/10/2018 I-131 -1.47E+00 2.57E+00 8.59E+00 U WS 01 454753001 7/10/2018 K-40 2.91E+02 2.10E+01 1.05E+01 WS 01 454753001 7/10/2018 La-140 -2.37E+00 1.38E+00 3.88E+00 U WS 01 454753001 7/10/2018 Mn-54 1.00E-01 3.53E-01 1.16E+00 U WS 01 454753001 7/10/2018 Nb-95 1.06E+00 7.46E-01 1.29E+00 U WS 01 454753001 7/10/2018 Pb-212 5.56E-02 1.56E+00 2.68E+00 U WS 01 454753001 7/10/2018 Pb-214 -2.63E+00 1.60E+00 2.99E+00 U WS 01 454753001 7/10/2018 Ru-103 -6.95E-01 5.19E-01 1.60E+00 U WS 01 454753001 7/10/2018 Ru-106 -9.05E+00 3.87E+00 9.93E+00 U WS 01 454753001 7/10/2018 Sb-124 -5.72E-01 9.50E-01 2.81E+00 U WS 01 454753001 7/10/2018 Sb-125 1.77E+00 1.02E+00 3.28E+00 U WS 01 454753001 7/10/2018 Se-75 -2.11E-01 5.68E-01 1.75E+00 U WS 01 454753001 7/10/2018 Th-228 5.56E-02 1.56E+00 2.68E+00 U WS 01 454753001 7/10/2018 Zn-65 -1.53E-01 8.30E-01 2.64E+00 U WS 01 454753001 7/10/2018 Zr-95 -3.59E-01 8.25E-01 2.37E+00 U WS 01 457692001 8/14/2018 Ac-228 0.00E+00 4.54E+00 5.67E+00 U WS 01 457692001 8/14/2018 Ag-108m -4.40E-01 4.03E-01 1.26E+00 U WS 01 457692001 8/14/2018 Ag-110m -1.04E-01 6.30E-01 1.99E+00 U WS 01 457692001 8/14/2018 Ba-140 -1.79E+00 2.70E+00 8.62E+00 U WS 01 457692001 8/14/2018 Be-7 -4.26E+00 4.17E+00 1.31E+01 U WS 01 457692001 8/14/2018 Bi-214 3.50E+00 2.50E+00 4.12E+00 U WS 01 457692001 8/14/2018 Ce-141 1.56E-01 9.18E-01 2.95E+00 U WS 01 457692001 8/14/2018 Ce-144 -4.24E+00 3.47E+00 1.04E+01 U WS 01 457692001 8/14/2018 Co-57 -5.19E-01 4.55E-01 1.38E+00 U WS 01 457692001 8/14/2018 Co-58 -4.31E-01 4.87E-01 1.47E+00 U WS 01 457692001 8/14/2018 Co-60 1.23E-01 4.50E-01 1.52E+00 U WS 01 457692001 8/14/2018 Cr-51 -3.38E+00 4.72E+00 1.56E+01 U WS 01 457692001 8/14/2018 Cs-134 1.14E+00 5.90E-01 1.84E+00 U WS 01 457692001 8/14/2018 Cs-137 4.25E-01 4.77E-01 1.51E+00 U WS 01 457692001 8/14/2018 Fe-59 1.68E+00 1.04E+00 3.41E+00 U WS 01 457692001 8/14/2018 I-131 1.49E+00 1.10E+00 3.64E+00 U WS 01 457692001 8/14/2018 K-40 3.76E+02 2.80E+01 1.29E+01 WS 01 457692001 8/14/2018 La-140 -6.43E-01 9.06E-01 2.80E+00 U WS 01 457692001 8/14/2018 Mn-54 -5.30E-01 4.58E-01 1.33E+00 U WS 01 457692001 8/14/2018 Nb-95 1.26E+00 1.03E+00 1.50E+00 U WS 01 457692001 8/14/2018 Pb-212 -9.31E-01 1.44E+00 3.71E+00 U WS 01 457692001 8/14/2018 Pb-214 -9.05E-01 2.07E+00 3.82E+00 U WS 01 457692001 8/14/2018 Ru-103 3.75E-02 4.80E-01 1.60E+00 U WS 01 457692001 8/14/2018 Ru-106 3.95E+00 3.98E+00 1.31E+01 U WS 01 457692001 8/14/2018 Sb-124 6.67E-01 1.15E+00 3.84E+00 U WS 01 457692001 8/14/2018 Sb-125 2.71E+00 1.38E+00 4.35E+00 U WS 01 457692001 8/14/2018 Se-75 -1.52E-01 5.98E-01 2.04E+00 U WS 01 457692001 8/14/2018 Th-228 -9.31E-01 1.44E+00 3.71E+00 U WS 01 457692001 8/14/2018 Zn-65 5.22E-01 1.02E+00 3.48E+00 U WS 01 457692001 8/14/2018 Zr-95 2.98E-02 8.59E-01 2.78E+00 U WS 01 459720001 9/12/2018 Ac-228 -6.75E+00 4.09E+00 8.33E+00 U WS 01 459720001 9/12/2018 Ag-108m 6.30E-01 1.15E+00 1.72E+00 U -241-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 01 459720001 9/12/2018 Ag-110m -8.84E-01 9.65E-01 2.61E+00 U WS 01 459720001 9/12/2018 Ba-140 -1.16E+00 4.72E+00 1.50E+01 U WS 01 459720001 9/12/2018 Be-7 -4.53E+00 5.76E+00 1.79E+01 U WS 01 459720001 9/12/2018 Bi-214 -4.59E+00 2.31E+00 4.65E+00 U WS 01 459720001 9/12/2018 Ce-141 5.61E-01 1.22E+00 3.52E+00 U WS 01 459720001 9/12/2018 Ce-144 -4.52E+00 3.62E+00 1.07E+01 U WS 01 459720001 9/12/2018 Co-57 -1.97E-01 5.68E-01 1.40E+00 U WS 01 459720001 9/12/2018 Co-58 3.74E-01 5.99E-01 2.02E+00 U WS 01 459720001 9/12/2018 Co-60 -6.08E-01 6.10E-01 1.92E+00 U WS 01 459720001 9/12/2018 Cr-51 3.34E+00 6.23E+00 2.08E+01 U WS 01 459720001 9/12/2018 Cs-134 -4.81E-01 7.05E-01 1.97E+00 U WS 01 459720001 9/12/2018 Cs-137 -7.08E-01 5.93E-01 1.85E+00 U WS 01 459720001 9/12/2018 Fe-59 -1.50E+00 1.50E+00 4.55E+00 U WS 01 459720001 9/12/2018 I-131 4.76E-01 1.96E+00 6.48E+00 U WS 01 459720001 9/12/2018 K-40 2.94E+02 2.50E+01 1.89E+01 WS 01 459720001 9/12/2018 La-140 -7.50E-02 1.62E+00 4.66E+00 U WS 01 459720001 9/12/2018 Mn-54 1.89E-01 5.68E-01 1.90E+00 U WS 01 459720001 9/12/2018 Nb-95 -5.57E-01 6.49E-01 2.07E+00 U WS 01 459720001 9/12/2018 Pb-212 3.41E-02 2.18E+00 3.13E+00 U WS 01 459720001 9/12/2018 Pb-214 -2.54E+00 2.23E+00 4.32E+00 U WS 01 459720001 9/12/2018 Ru-103 -2.60E-01 7.26E-01 2.30E+00 U WS 01 459720001 9/12/2018 Ru-106 -2.99E-01 5.13E+00 1.74E+01 U WS 01 459720001 9/12/2018 Sb-124 2.74E+00 1.61E+00 5.37E+00 U WS 01 459720001 9/12/2018 Sb-125 1.66E+00 1.63E+00 5.07E+00 U WS 01 459720001 9/12/2018 Se-75 -2.53E-02 7.52E-01 2.52E+00 U WS 01 459720001 9/12/2018 Th-228 3.41E-02 2.18E+00 3.13E+00 U WS 01 459720001 9/12/2018 Zn-65 -3.26E-01 1.33E+00 4.26E+00 U WS 01 459720001 9/12/2018 Zr-95 -1.17E+00 1.19E+00 3.75E+00 U WS 01 465130001 9/12/2018 H-3 -2.71E+02 1.73E+02 6.08E+02 U WS 01 462208001 10/16/2018 Ac-228 -6.68E+00 4.40E+00 8.30E+00 U WS 01 462208001 10/16/2018 Ag-108m 6.47E-01 5.44E-01 1.80E+00 U WS 01 462208001 10/16/2018 Ag-110m 2.30E-01 7.82E-01 2.56E+00 U WS 01 462208001 10/16/2018 Ba-140 -4.66E+00 3.34E+00 1.00E+01 U WS 01 462208001 10/16/2018 Be-7 7.50E+00 5.59E+00 1.83E+01 U WS 01 462208001 10/16/2018 Bi-214 7.39E+00 2.71E+00 3.51E+00 WS 01 462208001 10/16/2018 Ce-141 -1.99E+00 1.84E+00 4.09E+00 U WS 01 462208001 10/16/2018 Ce-144 -4.03E+00 4.80E+00 1.49E+01 U WS 01 462208001 10/16/2018 Co-57 -1.05E+00 6.57E-01 1.91E+00 U WS 01 462208001 10/16/2018 Co-58 -2.36E-01 6.20E-01 1.98E+00 U WS 01 462208001 10/16/2018 Co-60 1.25E+00 6.62E-01 2.19E+00 U WS 01 462208001 10/16/2018 Cr-51 -2.55E-02 5.75E+00 1.94E+01 U WS 01 462208001 10/16/2018 Cs-134 -6.06E-02 6.25E-01 2.03E+00 U WS 01 462208001 10/16/2018 Cs-137 7.60E-01 6.50E-01 2.14E+00 U WS 01 462208001 10/16/2018 Fe-59 1.64E+00 1.48E+00 4.81E+00 U WS 01 462208001 10/16/2018 I-131 1.10E-01 1.32E+00 3.92E+00 U WS 01 462208001 10/16/2018 K-40 3.38E+02 2.81E+01 1.78E+01 WS 01 462208001 10/16/2018 La-140 1.18E-01 9.69E-01 3.25E+00 U WS 01 462208001 10/16/2018 Mn-54 1.19E+00 1.12E+00 1.82E+00 U WS 01 462208001 10/16/2018 Nb-95 -1.27E+00 7.01E-01 1.92E+00 U -242-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 01 462208001 10/16/2018 Pb-212 -1.10E+00 2.13E+00 4.74E+00 U WS 01 462208001 10/16/2018 Pb-214 -5.71E+00 2.86E+00 5.18E+00 U WS 01 462208001 10/16/2018 Ru-103 7.25E-01 7.24E-01 2.14E+00 U WS 01 462208001 10/16/2018 Ru-106 1.31E+01 6.17E+00 1.90E+01 U WS 01 462208001 10/16/2018 Sb-124 1.40E+00 1.36E+00 4.66E+00 U WS 01 462208001 10/16/2018 Sb-125 1.42E+00 1.63E+00 5.46E+00 U WS 01 462208001 10/16/2018 Se-75 5.58E-01 8.48E-01 2.88E+00 U WS 01 462208001 10/16/2018 Th-228 -1.10E+00 2.13E+00 4.74E+00 U WS 01 462208001 10/16/2018 Zn-65 -9.60E-01 1.71E+00 4.58E+00 U WS 01 462208001 10/16/2018 Zr-95 -2.71E-01 1.09E+00 3.51E+00 U WS 01 464693001 11/12/2018 Ac-228 -2.96E+00 3.62E+00 8.32E+00 U WS 01 464693001 11/12/2018 Ag-108m -5.59E-01 4.94E-01 1.50E+00 U WS 01 464693001 11/12/2018 Ag-110m -5.19E-01 7.02E-01 2.22E+00 U WS 01 464693001 11/12/2018 Ba-140 2.43E+00 3.02E+00 9.73E+00 U WS 01 464693001 11/12/2018 Be-7 -7.39E+00 5.32E+00 1.55E+01 U WS 01 464693001 11/12/2018 Bi-214 1.30E-02 2.36E+00 3.80E+00 U WS 01 464693001 11/12/2018 Ce-141 -3.02E+00 1.62E+00 3.00E+00 U WS 01 464693001 11/12/2018 Ce-144 -4.03E-01 3.25E+00 1.02E+01 U WS 01 464693001 11/12/2018 Co-57 -2.63E-01 4.24E-01 1.32E+00 U WS 01 464693001 11/12/2018 Co-58 -7.80E-02 5.83E-01 1.93E+00 U WS 01 464693001 11/12/2018 Co-60 1.29E-02 6.04E-01 1.78E+00 U WS 01 464693001 11/12/2018 Cr-51 1.84E+00 5.21E+00 1.73E+01 U WS 01 464693001 11/12/2018 Cs-134 -1.32E+00 1.19E+00 2.12E+00 U WS 01 464693001 11/12/2018 Cs-137 9.85E-01 6.25E-01 2.06E+00 U WS 01 464693001 11/12/2018 Fe-59 5.31E-01 1.26E+00 4.13E+00 U WS 01 464693001 11/12/2018 I-131 -1.86E-01 1.05E+00 3.43E+00 U WS 01 464693001 11/12/2018 K-40 3.22E+02 2.61E+01 1.66E+01 WS 01 464693001 11/12/2018 La-140 -8.86E-01 9.86E-01 3.05E+00 U WS 01 464693001 11/12/2018 Mn-54 -8.58E-01 5.92E-01 1.75E+00 U WS 01 464693001 11/12/2018 Nb-95 -8.57E-02 5.54E-01 1.84E+00 U WS 01 464693001 11/12/2018 Pb-212 -7.28E-01 1.40E+00 3.48E+00 U WS 01 464693001 11/12/2018 Pb-214 3.98E+00 2.07E+00 4.45E+00 U WS 01 464693001 11/12/2018 Ru-103 -1.16E+00 6.58E-01 1.82E+00 U WS 01 464693001 11/12/201 8 Ru-106 -2.76E+00 8.54E+00 1.50E+01 U WS 01 464693001 11/12/2018 Sb-124 3.39E-01 1.29E+00 4.32E+00 U WS 01 464693001 11/12/2018 Sb-125 -1.46E+00 1.53E+00 4.72E+00 U WS 01 464693001 11/12/2018 Se-75 -2.10E+00 8.36E-01 2.14E+00 U WS 01 464693001 11/12/2018 Th-228 -7.28E-01 1.40E+00 3.48E+00 U WS 01 464693001 11/12/2018 Zn-65 1.18E+00 1.43E+00 4.16E+00 U WS 01 464693001 11/12/2018 Zr-95 5.08E-01 1.07E+00 3.21E+00 U WS 01 466552001 12/3/2018 Ac-228 -3.84E+00 3.50E+00 6.47E+00 U WS 01 466552001 12/3/2018 Ag-108m -2.51E-01 3.76E-01 1.20E+00 U WS 01 466552001 12/3/2018 Ag-110m 9.69E-02 5.72E-01 1.93E+00 U WS 01 466552001 12/3/2018 Ba-140 3.66E+00 3.60E+00 8.10E+00 U WS 01 466552001 12/3/2018 Be-7 -1.63E+00 6.80E+00 1.31E+01 U WS 01 466552001 12/3/2018 Bi-214 2.36E+00 2.28E+00 3.72E+00 U WS 01 466552001 12/3/2018 Ce-141 7.86E-01 1.73E+00 2.42E+00 U WS 01 466552001 12/3/2018 Ce-144 -4.89E-01 2.93E+00 9.28E+00 U WS 01 466552001 12/3/2018 Co-57 1.45E-01 3.75E-01 1.20E+00 U -243-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 01 466552001 12/3/2018 Co-58 -6.03E-01 4.49E-01 1.37E+00 U WS 01 466552001 12/3/2018 Co-60 -6.16E-02 4.75E-01 1.53E+00 U WS 01 466552001 12/3/2018 Cr-51 -8.04E-01 4.18E+00 1.39E+01 U WS 01 466552001 12/3/2018 Cs-134 -8.77E-01 8.18E-01 1.65E+00 U WS 01 466552001 12/3/2018 Cs-137 5.65E-01 6.86E-01 1.41E+00 U WS 01 466552001 12/3/2018 Fe-59 -6.72E-01 9.58E-01 3.03E+00 U WS 01 466552001 12/3/2018 I-131 1.85E-01 8.94E-01 2.99E+00 U WS 01 466552001 12/3/2018 K-40 3.18E+02 2.43E+01 1.25E+01 WS 01 466552001 12/3/2018 La-140 -2.24E+00 9.04E-01 2.09E+00 U WS 01 466552001 12/3/2018 Mn-54 -8.53E-01 5.14E-01 1.29E+00 U WS 01 466552001 12/3/2018 Nb-95 9.46E-01 5.38E-01 1.58E+00 U WS 01 466552001 12/3/2018 Pb-212 1.47E+00 1.76E+00 3.10E+00 U WS 01 466552001 12/3/2018 Pb-214 -1.75E+00 1.63E+00 3.33E+00 U WS 01 466552001 12/3/2018 Ru-103 -1.09E+00 5.44E-01 1.47E+00 U WS 01 466552001 12/3/2018 Ru-106 -5.71E-01 4.19E+00 1.34E+01 U WS 01 466552001 12/3/2018 Sb-124 -2.54E-01 9.34E-01 3.08E+00 U WS 01 466552001 12/3/2018 Sb-125 -6.99E-01 1.15E+00 3.69E+00 U WS 01 466552001 12/3/2018 Se-75 1.72E-01 5.72E-01 1.95E+00 U WS 01 466552001 12/3/2018 Th-228 1.47E+00 1.76E+00 3.10E+00 U WS 01 466552001 12/3/2018 Zn-65 -1.72E+00 1.07E+00 3.05E+00 U WS 01 466552001 12/3/2018 Zr-95 -1.38E+00 1.12E+00 2.69E+00 U WS 01 469372001 12/3/2018 H-3 -1.33E+02 2.50E+02 4.44E+02 U WS 10 450612004 5/17/2018 Ac-228 -2.68E+00 3.16E+00 7.14E+00 U WS 10 450612004 5/17/2018 Ag-108m 8.70E-01 5.09E-01 1.30E+00 U WS 10 450612004 5/17/2018 Ag-110m 1.17E+00 6.30E-01 1.99E+00 U WS 10 450612004 5/17/2018 Ba-140 -3.90E+00 2.20E+00 6.15E+00 U WS 10 450612004 5/17/2018 Be-7 -4.35E+00 3.52E+00 1.07E+01 U WS 10 450612004 5/17/2018 Bi-214 1.74E+00 2.14E+00 3.51E+00 U WS 10 450612004 5/17/2018 Ce-141 -1.77E+00 1.28E+00 2.45E+00 U WS 10 450612004 5/17/2018 Ce-144 -7.64E-01 2.83E+00 9.13E+00 U WS 10 450612004 5/17/2018 Co-57 -2.24E-01 3.76E-01 1.20E+00 U WS 10 450612004 5/17/2018 Co-58 -1.13E+00 5.04E-01 1.20E+00 U WS 10 450612004 5/17/2018 Co-60 8.96E-01 5.15E-01 1.71E+00 U WS 10 450612004 5/17/2018 Cr-51 7.68E+00 4.20E+00 1.36E+01 U WS 10 450612004 5/17/2018 Cs-134 4.99E-02 4.77E-01 1.54E+00 U WS 10 450612004 5/17/2018 Cs-137 6.83E-01 4.69E-01 1.53E+00 U WS 10 450612004 5/17/2018 Fe-59 -1.13E+00 1.13E+00 3.06E+00 U WS 10 450612004 5/17/2018 H-3 1.01E+02 1.63E+02 5.19E+02 U WS 10 450612004 5/17/2018 I-131 -8.64E-01 7.39E-01 2.34E+00 U WS 10 450612004 5/17/2018 K-40 1.73E+02 1.70E+01 1.53E+01 WS 10 450612004 5/17/2018 La-140 -2.43E+00 2.27E+00 2.52E+00 U WS 10 450612004 5/17/2018 Mn-54 5.38E-02 4.29E-01 1.38E+00 U WS 10 450612004 5/17/2018 Nb-95 2.76E-01 4.57E-01 1.50E+00 U WS 10 450612004 5/17/2018 Pb-212 7.05E-02 1.67E+00 3.18E+00 U WS 10 450612004 5/17/2018 Pb-214 -7.57 E-01 1.57E+00 3.47E+00 U WS 10 450612004 5/17/2018 Ru-103 2.54E-01 4.71E-01 1.43E+00 U WS 10 450612004 5/17/2018 Ru-106 2.28E+00 3.83E+00 1.27E+01 U -244-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 10 450612004 5/17/2018 Sb-124 -6.53E-01 1.52E+00 3.28E+00 U WS 10 450612004 5/17/2018 Sb-125 -5.61E-01 1.22E+00 3.58E+00 U WS 10 450612004 5/17/2018 Se-75 -3.02E-02 6.27E-01 1.96E+00 U WS 10 450612004 5/17/2018 Th-228 7.05E-02 1.67E+00 3.18E+00 U WS 10 450612004 5/17/2018 Zn-65 -5.20E-01 8.36E-01 2.70E+00 U WS 10 450612004 5/17/2018 Zr-95 -1.23E+00 8.58E-01 2.44E+00 U WS 10 464693004 11/14/2018 Ac-228 6.85E-01 4.37E+00 7.93E+00 U WS 10 464693004 11/14/2018 Ag-108m -7.40E-01 4.85E-01 1.37E+00 U WS 10 464693004 11/14/2018 Ag-110m 4.20E-02 6.58E-01 2.24E+00 U WS 10 464693004 11/14/2018 Ba-140 3.05E+00 2.74E+00 9.10E+00 U WS 10 464693004 11/14/2018 Be-7 8.16E+00 4.65E+00 1.50E+01 U WS 10 464693004 11/14/2018 Bi-214 1.73E+00 2.28E+00 3.34E+00 U WS 10 464693004 11/14/2018 Ce-141 0.00E+00 2.29E+00 2.52E+00 U WS 10 464693004 11/14/2018 Ce-144 2.69E+00 3.14E+00 1.03E+01 U WS 10 464693004 11/14/2018 Co-57 5.82E-01 4.09E-01 1.31E+00 U WS 10 464693004 11/14/2018 Co-58 3.92E-01 4.80E-01 1.57E+00 U WS 10 464693004 11/14/2018 Co-60 -3.38E-01 5.97E-01 1.88E+00 U WS 10 464693004 11/14/2018 Cr-51 5.86E+00 4.73E+00 1.60E+01 U WS 10 464693004 11/14/2018 Cs-134 1.11E-01 5.55E-01 1.79E+00 U WS 10 464693004 11/14/2018 Cs-137 5.11E-01 5.09E-01 1.67E+00 U WS 10 464693004 11/14/2018 Fe-59 1.39E+00 1.05E+00 3.56E+00 U WS 10 464693004 11/14/2018 I-131 -8.15E-02 9.84E-01 3.33E+00 U WS 10 464693004 11/14/2018 K-40 5.09E+01 1.38E+01 1.55E+01 WS 10 464693004 11/14/2018 La-140 -1.36E+00 1.05E+00 2.93E+00 U WS 10 464693004 11/14/2018 Mn-54 -1.24E+00 8.89E-01 1.52E+00 U WS 10 464693004 11/14/2018 Nb-95 5.55E-01 5.65E-01 1.84E+00 U WS 10 464693004 11/14/2018 Pb-212 1.86E+00 1.89E+00 3.56E+00 U WS 10 464693004 11/14/2018 Pb-214 2.00E+00 2.39E+00 4.04E+00 U WS 10 464693004 11/14/2018 Ru-103 -4.24E-02 5.24E-01 1.73E+00 U WS 10 464693004 11/14/2018 Ru-106 -7.21E+00 4.65E+00 1.31E+01 U WS 10 464693004 11/14/2018 Sb-124 1.29E+00 1.23E+00 4.14E+00 U WS 10 464693004 11/14/2018 Sb-125 2.75E+00 1.51E+00 3.92E+00 U WS 10 464693004 11/14/2018 Se-75 -1.46E+00 7.80E-01 2.07E+00 U WS 10 464693004 11/14/2018 Th-228 1.86E+00 1.89E+00 3.56E+00 U WS 10 464693004 11/14/2018 Zn-65 1.32E+00 1.10E+00 3.38E+00 U WS 10 464693004 11/14/2018 Zr-95 7.37E-01 9.44E-01 2.79E+00 U WS 10 473567001 11/14/2018 H-3 6.25E+01 1.73E+02 5.59E+02 U WS 51 442388002 1/19/2018 Ac-228 2.45E+00 3.93E+00 7.33E+00 U WS 51 442388002 1/19/2018 Ag-108m 1.63E-01 3.89E-01 1.30E+00 U WS 51 442388002 1/19/2018 Ag-110m 3.50E-01 6.19E-01 2.12E+00 U WS 51 442388002 1/19/2018 Ba-140 2.84E+00 2.97E+00 7.31E+00 U WS 51 442388002 1/19/2018 Be-7 -8.17E+00 4.43E+00 1.24E+01 U WS 51 442388002 1/19/2018 Bi-214 5.31E-01 1.84E+00 3.65E+00 U WS 51 442388002 1/19/2018 Ce-141 9.80E-02 8.61E-01 2.55E+00 U WS 51 442388002 1/19/2018 Ce-144 2.41E+00 3.16E+00 1.01E+01 U WS 51 442388002 1/19/2018 Co-57 3.34E-01 4.15E-01 1.34E+00 U WS 51 442388002 1/19/2018 Co-58 2.93E-01 5.06E-01 1.55E+00 U WS 51 442388002 1/19/2018 Co-60 -2.34E-01 4.89E-01 1.55E+00 U -245-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 51 442388002 1/19/2018 Cr-51 6.73E-01 4.17E+00 1.42E+01 U WS 51 442388002 1/19/2018 Cs-134 -1.52E+00 9.64E-01 1.74E+00 U WS 51 442388002 1/19/2018 Cs-137 8.75E-02 4.73E-01 1.53E+00 U WS 51 442388002 1/19/2018 Fe-59 -5.85E-01 8.96E-01 2.85E+00 U WS 51 442388002 1/19/2018 I-131 1.05E+00 8.28E-01 2.74E+00 U WS 51 442388002 1/19/2018 K-40 2.78E+02 2.42E+01 1.55E+01 WS 51 442388002 1/19/2018 La-140 3.35E-01 7.28E-01 2.40E+00 U WS 51 442388002 1/19/2018 Mn-54 -6.52E-01 4.78E-01 1.46E+00 U WS 51 442388002 1/19/2018 Nb-95 -8.86E-02 5.04E-01 1.59E+00 U WS 51 442388002 1/19/2018 Pb-212 1.57E-01 1.78E+00 3.25E+00 U WS 51 442388002 1/19/2018 Pb-214 -9.65E-01 1.89E+00 3.83E+00 U WS 51 442388002 1/19/2018 Ru-103 -1.05E+00 5.54E-01 1.53E+00 U WS 51 442388002 1/19/2018 Ru-106 3.74E+00 4.02E+00 1.32E+01 U WS 51 442388002 1/19/2018 Sb-124 -4.47E-01 1.19E+00 3.69E+00 U WS 51 442388002 1/19/2018 Sb-125 -1.98E-01 1.13E+00 3.74E+00 U WS 51 442388002 1/19/2018 Se-75 -3.94E-01 6.14E-01 2.05E+00 U WS 51 442388002 1/19/2018 Th-228 1.57E-01 1.78E+00 3.25E+00 U WS 51 442388002 1/19/2018 Zn-65 -5.05E-01 1.00E+00 3.23E+00 U WS 51 442388002 1/19/2018 Zr-95 -7.53E-02 7.84E-01 2.48E+00 U WS 51 444567002 2/15/2018 Ac-228 -4.24E+00 2.77E+00 5.66E+00 U WS 51 444567002 2/15/2018 Ag-108m -4.96E-02 3.35E-01 1.11E+00 U WS 51 444567002 2/15/2018 Ag-110m -7.58E-01 5.76E-01 1.64E+00 U WS 51 444567002 2/15/2018 Ba-140 -5.60E-01 2.56E+00 8.32E+00 U WS 51 444567002 2/15/2018 Be-7 5.72E+00 3.69E+00 1.19E+01 U WS 51 444567002 2/15/2018 Bi-214 2.46E+00 2.40E+00 3.27E+00 U WS 51 444567002 2/15/2018 Ce-141 -1.21E+00 8.72E-01 2.55E+00 U WS 51 444567002 2/15/2018 Ce-144 5.48E+00 2.93E+00 8.68E+00 U WS 51 444567002 2/15/2018 Co-57 5.09E-01 3.63E-01 1.12E+00 U WS 51 444567002 2/15/2018 Co-58 -3.28E-01 4.20E-01 1.28E+00 U WS 51 444567002 2/15/2018 Co-60 6.81E-01 4.44E-01 1.47E+00 U WS 51 444567002 2/15/2018 Cr-51 -2.21E+00 4.00E+00 1.32E+01 U WS 51 444567002 2/15/2018 Cs-134 -9.35E-01 6.93E-01 1.30E+00 U WS 51 444567002 2/15/2018 Cs-137 5.31E-01 4.42E-01 1.43E+00 U WS 51 444567002 2/15/2018 Fe-59 9.97E-01 8.92E-01 3.01E+00 U WS 51 444567002 2/15/2018 I-131 2.20E-01 1.11E+00 3.57E+00 U WS 51 444567002 2/15/2018 K-40 3.07E+02 2.33E+01 1.14E+01 WS 51 444567002 2/15/2018 La-140 6.90E-01 8.65E-01 2.89E+00 U WS 51 444567002 2/15/2018 Mn-54 -4.5 4E-01 3.94E-01 1.15E+00 U WS 51 444567002 2/15/2018 Nb-95 -3.16E-01 4.15E-01 1.27E+00 U WS 51 444567002 2/15/2018 Pb-212 3.39E-01 1.75E+00 2.79E+00 U WS 51 444567002 2/15/2018 Pb-214 -2.67E+00 1.76E+00 3.18E+00 U WS 51 444567002 2/15/2018 Ru-103 -2.35E-01 4.43E-01 1.43E+00 U WS 51 444567002 2/15/2018 Ru-106 -6.09E-01 3.73E+00 1.07E+01 U WS 51 444567002 2/15/2018 Sb-124 -8.40E-01 9.33E-01 2.80E+00 U WS 51 444567002 2/15/2018 Sb-125 1.23E+00 1.07E+00 3.54E+00 U WS 51 444567002 2/15/2018 Se-75 5.94E-01 5.38E-01 1.81E+00 U WS 51 444567002 2/15/2018 Th-228 3.39E-01 1.75E+00 2.79E+00 U WS 51 444567002 2/15/2018 Zn-65 1.09E+00 8.40E-01 2.82E+00 U WS 51 444567002 2/15/2018 Zr-95 2.16E-01 7.39E-01 2.39E+00 U -246-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 51 446138002 3/15/2018 Ac-228 -4.48E+00 3.21E+00 7.22E+00 U WS 51 446138002 3/15/2018 Ag-108m -7.54E-02 4.91E-01 1.51E+00 U WS 51 446138002 3/15/2018 Ag-110m -5.52E-01 6.93E-01 2.24E+00 U WS 51 446138002 3/15/2018 Ba-140 3.72E+00 2.79E+00 8.92E+00 U WS 51 446138002 3/15/2018 Be-7 -1.96E+00 4.49E+00 1.43E+01 U WS 51 446138002 3/15/2018 Bi-214 3.67E+00 2.51E+00 3.99E+00 U WS 51 446138002 3/15/2018 Ce-141 -4.14E-01 9.06E-01 3.01E+00 U WS 51 446138002 3/15/2018 Ce-144 2.46E+00 3.53E+00 1.19E+01 U WS 51 446138002 3/15/2018 Co-57 -5.48E-02 4.71E-01 1.59E+00 U WS 51 446138002 3/15/2018 Co-58 -5.09E-01 5.50E-01 1.77E+00 U WS 51 446138002 3/15/2018 Co-60 6.79E-01 5.74E-01 1.93E+00 U WS 51 446138002 3/15/2018 Cr-51 3.25E+00 4.63E+00 1.53E+01 U WS 51 446138002 3/15/2018 Cs-134 -7.12E-01 5.43E-01 1.66E+00 U WS 51 446138002 3/15/2018 Cs-137 2.05E-01 5.57E-01 1.80E+00 U WS 51 446138002 3/15/2018 Fe-59 2.26E-01 1.13E+00 3.81E+00 U WS 51 446138002 3/15/2018 I-131 1.90E-01 8.41E-01 2.76E+00 U WS 51 446138002 3/15/2018 K-40 2.84E+0 2 2.23E+01 1.50E+01 WS 51 446138002 3/15/2018 La-140 4.98E-01 8.40E-01 2.82E+00 U WS 51 446138002 3/15/2018 Mn-54 -8.38E-01 5.45E-01 1.63E+00 U WS 51 446138002 3/15/2018 Nb-95 4.91E-01 6.19E-01 1.78E+00 U WS 51 446138002 3/15/2018 Pb-212 -9.32E-01 1.60E+00 3.52E+00 U WS 51 446138002 3/15/2018 Pb-214 -1.82E+00 1.80E+00 4.11E+00 U WS 51 446138002 3/15/2018 Ru-103 -1.69E-02 5.90E-01 1.70E+00 U WS 51 446138002 3/15/2018 Ru-106 -4.15E+00 5.10E+00 1.55E+01 U WS 51 446138002 3/15/2018 Sb-124 5.86E-01 1.44E+00 4.24E+00 U WS 51 446138002 3/15/2018 Sb-125 -1.12E+00 1.46E+00 4.57E+00 U WS 51 446138002 3/15/2018 Se-75 5.37E-01 6.35E-01 2.10E+00 U WS 51 446138002 3/15/2018 Th-228 -9.32E-01 1.60E+00 3.52E+00 U WS 51 446138002 3/15/2018 Zn-65 1.90E+00 1.18E+00 3.99E+00 U WS 51 446138002 3/15/2018 Zr-95 4.45E-01 9.84E-01 3.16E+00 U WS 51 451294002 3/15/2018 H-3 1.46E+02 1.43E+02 4.43E+02 U WS 51 448108002 4/11/2018 Ac-228 3.72E+00 4.84E+00 7.80E+00 U WS 51 448108002 4/11/2018 Ag-108m -2.24E-01 3.98E-01 1.30E+00 U WS 51 448108002 4/11/2018 Ag-110m 8.93E-01 6.37E-01 2.05E+00 U WS 51 448108002 4/11/2018 Ba-140 2.88E-01 2.45E+00 8.13E+00 U WS 51 448108002 4/11/2018 Be-7 -6.08E+01 1.84E+01 1.33E+01 U WS 51 448108002 4/11/2018 Bi-214 -6.38E-01 2.15E+00 3.74E+00 U WS 51 448108002 4/11/2018 Ce-141 -8.79E+00 2.58E+00 3.02E+00 U WS 51 448108002 4/11/2018 Ce-144 4.57E+00 3.46E+00 1.09E+01 U WS 51 448108002 4/11/2018 Co-57 -3.91E-01 4.37E-01 1.35E+00 U WS 51 448108002 4/11/2018 Co-58 -5.20E-01 4.60E-01 1.34E+00 U WS 51 448108002 4/11/2018 Co-60 2.12E-01 5.02E-01 1.70E+00 U WS 51 448108002 4/11/2018 Cr-51 5.49E+00 4.88E+00 1.64E+01 U WS 51 448108002 4/11/2018 Cs-134 2.03E-01 4.77E-01 1.56E+00 U WS 51 448108002 4/11/2018 Cs-137 -2.70E-01 4.45E-01 1.40E+00 U WS 51 448108002 4/11/2018 Fe-59 0.00E+00 3.16E+00 3.57E+00 U WS 51 448108002 4/11/2018 I-131 -4.20E-01 9.42E-01 3.15E+00 U WS 51 448108002 4/11/2018 K-40 2.66E+02 2.24E+01 1.29E+01 WS 51 448108002 4/11/2018 La-140 5.85E-02 8.44E-01 2.78E+00 U -247-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 51 448108002 4/11/2018 Mn-54 6.37E-01 4.80E-01 1.55E+00 U WS 51 448108002 4/11/2018 Nb-95 1.01E-01 5.23E-01 1.52E+00 U WS 51 448108002 4/11/2018 Pb-212 1.13E+00 1.56E+00 3.56E+00 U WS 51 448108002 4/11/2018 Pb-214 -1.14E+00 1.92E+00 3.97E+00 U WS 51 448108002 4/11/2018 Ru-103 -1.37E-01 5.44E-01 1.60E+00 U WS 51 448108002 4/11/2018 Ru-106 -3.16E+00 4.39E+00 1.22E+01 U WS 51 448108002 4/11/2018 Sb-124 -1.06E+00 1.13E+00 3.37E+00 U WS 51 448108002 4/11/2018 Sb-125 1.44E+00 1.19E+00 3.97E+00 U WS 51 448108002 4/11/2018 Se-75 1.54E-01 6.14E-01 2.12E+00 U WS 51 448108002 4/11/2018 Th-228 1.13E+00 1.58E+00 3.56E+00 U WS 51 448108002 4/11/2018 Zn-65 1.63E+00 1.15E+00 2.97E+00 U WS 51 448108002 4/11/2018 Zr-95 1.49E-01 7.65E-01 2.49E+0 0 U WS 51 450612002 5/14/2018 Ac-228 -1.45E+00 3.53E+00 6.90E+00 U WS 51 450612002 5/14/2018 Ag-108m -2.40E-01 5.39E-01 1.25E+00 U WS 51 450612002 5/14/2018 Ag-110m -3.26E-01 6.07E-01 1.86E+00 U WS 51 450612002 5/14/2018 Ba-140 5.86E-01 2.47E+00 8.21E+00 U WS 51 450612002 5/14/2018 Be-7 2.11E+00 3.94E+00 1.32E+01 U WS 51 450612002 5/14/2018 Bi-214 2.13E-01 2.10E+00 3.65E+00 U WS 51 450612002 5/14/2018 Ce-141 -3.36E+00 1.50E+00 2.65E+00 U WS 51 450612002 5/14/2018 Ce-144 3.12E+00 3.06E+00 9.83E+00 U WS 51 450612002 5/14/2018 Co-57 2.15E-01 3.96E-01 1.29E+00 U WS 51 450612002 5/14/2018 Co-58 -3.96E-01 4.84E-01 1.46E+00 U WS 51 450612002 5/14/2018 Co-60 -7.47E-01 6.45E-01 1.66E+00 U WS 51 450612002 5/14/2018 Cr-51 2.99E+00 4.52E+00 1.40E+01 U WS 51 450612002 5/14/2018 Cs-134 1.75E-01 4.71E-01 1.53E+00 U WS 51 450612002 5/14/2018 Cs-137 7.67E-01 1.17E+00 1.50E+00 U WS 51 450612002 5/14/2018 Fe-59 -6.18E-01 1.06E+00 3.13E+00 U WS 51 450612002 5/14/2018 I-131 -1.26E-01 9.18E-01 3.10E+00 U WS 51 450612002 5/14/2018 K-40 3.24E+02 2.41E+01 1.40E+01 WS 51 450612002 5/14/2018 La-140 -2.30E+00 9.64E-01 2.08E+00 U WS 51 450612002 5/14/2018 Mn-54 6.20E-01 4.73E-01 1.52E+00 U WS 51 450612002 5/14/2018 Nb-95 2.97E-01 5.29E-01 1.55E+00 U WS 51 450612002 5/14/2018 Pb-212 -3.36E+00 1.65E+00 3.22E+00 U WS 51 450612002 5/14/2018 Pb-214 -2.90E+00 1.50E+00 3.29E+00 U WS 51 450612002 5/14/2018 Ru-103 -4.36E-01 5.71E-01 1.62E+00 U WS 51 450612002 5/14/2018 Ru-106 1.00E+01 4.79E+00 1.47E+01 U WS 51 450612002 5/14/2018 Sb-124 -1.76E+00 1.29E+00 3.63E+00 U WS 51 450612002 5/14/2018 Sb-125 -1.08E+00 1.21E+00 3.69E+00 U WS 51 450612002 5/14/2018 Se-75 -3.48E-01 6.27E-01 1.91E+00 U WS 51 450612002 5/14/2018 Th-228 -3.36E+00 1.65E+00 3.22E+00 U WS 51 450612002 5/14/2018 Zn-65 -1.46E+00 1.02E+00 3.00E+00 U WS 51 450612002 5/14/2018 Zr-95 1.91E+00 9.22E-01 2.84E+00 U WS 51 452646002 6/12/2018 Ac-228 -3.82E+00 3.35E+00 5.94E+00 U WS 51 452646002 6/12/2018 Ag-108m 4.30E-01 3.56E-01 1.17E+00 U WS 51 452646002 6/12/2018 Ag-110m -2.35E+00 1.26E+00 1.55E+00 U WS 51 452646002 6/12/2018 Ba-140 3.88E+00 2.51E+00 7.99E+00 U WS 51 452646002 6/12/2018 Be-7 -1.22E+00 3.56E+00 1.16E+01 U WS 51 452646002 6/12/2018 Bi-214 7.53E-01 2.33E+00 3.15E+00 U WS 51 452646002 6/12/2018 Ce-141 -4.45E+00 1.72E+00 2.48E+00 U -248-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 51 452646002 6/12/2018 Ce-144 -2.51E-01 2.80E+00 9.01E+00 U WS 51 452646002 6/12/2018 Co-57 8.97E-02 3.55E-01 1.15E+00 U WS 51 452646002 6/12/2018 Co-58 2.23E-01 3.99E-01 1.37E+00 U WS 51 452646002 6/12/2018 Co-60 6.68E-01 4.53E-01 1.48E+00 U WS 51 452646002 6/12/2018 Cr-51 -1.22E+01 4.91E+00 1.28E+01 U WS 51 452646002 6/12/2018 Cs-134 -6.81E-02 4.25E-01 1.34E+00 U WS 51 452646002 6/12/2018 Cs-137 -1.86E-02 3.99E-01 1.28E+00 U WS 51 452646002 6/12/2018 Fe-59 -1.12E+00 9.10E-01 2.76E+00 U WS 51 452646002 6/12/2018 I-131 -7.92E-01 1.05E+00 3.04E+00 U WS 51 452646002 6/12/2018 K-40 3.18E+02 2.37E+01 1.37E+01 WS 51 452646002 6/12/2018 La-140 -3.18E-01 8.10E-01 2.54E+00 U WS 51 452646002 6/12/2018 Mn-54 -6.83E-01 4.24E-01 1.27E+00 U WS 51 452646002 6/12/2018 Nb-95 3.68E-01 4.17E-01 1.34E+00 U WS 51 452646002 6/12/2018 Pb-212 1.91E+00 1.93E+00 2.97E+00 U WS 51 452646002 6/12/2018 Pb-214 -2.56E+00 2.22E+00 3.25E+00 U WS 51 452646002 6/12/2018 Ru-103 -4.31E-01 4.81E-01 1.34E+00 U WS 51 452646002 6/12/2018 Ru-106 1.24E+00 3.49E+00 1.14E+01 U WS 51 452646002 6/12/2018 Sb-124 1.07E-01 1.04E+00 3.33E+00 U WS 51 452646002 6/12/2018 Sb-125 -3.85E-02 1.05E+00 3.48E+00 U WS 51 452646002 6/12/2018 Se-75 -3.83E-01 5.35E-01 1.79E+00 U WS 51 452646002 6/12/2018 Th-228 1.91E+00 1.93E+00 2.97E+00 U WS 51 452646002 6/12/2018 Zn-65 -1.06E+00 8.95E-01 2.73E+00 U WS 51 452646002 6/12/2018 Zr-95 -3.41E-01 7.31E-01 2.27E+00 U WS 51 457764002 6/12/2018 H-3 -2.48E+02 1.63E+02 5.80E+02 U WS 51 454753002 7/10/2018 Ac-228 -3.50E+00 2.71E+00 5.82E+00 U WS 51 454753002 7/10/2018 Ag-108m 1.40E-01 3.71E-01 1.12E+00 U WS 51 454753002 7/10/2018 Ag-110m 1.69E-01 5.43E-01 1.76E+00 U WS 51 454753002 7/10/2018 Ba-140 1.62E+00 4.48E+00 1.49E+01 U WS 51 454753002 7/10/2018 Be-7 3.65E+00 4.16E+00 1.38E+01 U WS 51 454753002 7/10/2018 Bi-214 2.64E+00 1.92E+00 3.10E+00 U WS 51 454753002 7/10/2018 Ce-141 -2.92E+00 1.81E+00 3.45E+00 U WS 51 454753002 7/10/2018 Ce-144 2.13E+00 3.03E+00 9.60E+00 U WS 51 454753002 7/10/2018 Co-57 1.53E-01 4.04E-01 1.29E+00 U WS 51 454753002 7/10/2018 Co-58 2.37E-02 4.33E-01 1.40E+00 U WS 51 454753002 7/10/2018 Co-60 7.46E-01 4.37E-01 1.45E+00 U WS 51 454753002 7/10/2018 Cr-51 7.11E-01 5.40E+00 1.84E+01 U WS 51 454753002 7/10/2018 Cs-134 5.84E-01 4.42E-01 1.43E+00 U WS 51 454753002 7/10/2018 Cs-137 -6.61E-02 3.92E-01 1.27E+00 U WS 51 454753002 7/10/2018 Fe-59 -1.70E+00 1.24E+00 3.25E+00 U WS 51 454753002 7/10/2018 I-131 1.86E+00 2.82E+00 9.53E+00 U WS 51 454753002 7/10/2018 K-40 3.41E+02 2.29E+01 1.02E+01 WS 51 454753002 7/10/2018 La-140 -1.27E+00 1.56E+00 4.85E+00 U WS 51 454753002 7/10/2018 Mn-54 8.19E-01 6.49E-01 1.19E+00 U WS 51 454753002 7/10/2018 Nb-95 -2.85E-01 4.79E-01 1.50E+00 U WS 51 454753002 7/10/2018 Pb-212 1.15E+00 1.74E+00 3.00E+00 U WS 51 454753002 7/10/2018 Pb-214 0.00E+00 2.52E+00 3.16E+00 U WS 51 454753002 7/10/2018 Ru-103 -1.41E+00 6.82E-01 1.62E+00 U WS 51 454753002 7/10/2018 Ru-106 1.97E+00 3.49E+00 1.15E+01 U WS 51 454753002 7/10/2018 Sb-124 2.61E-01 1.18E+00 3.48E+00 U -249-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 51 454753002 7/10/2018 Sb-125 -4.68E-01 1.12E+00 3.30E+00 U WS 51 454753002 7/10/2018 Se-75 -5.19E-01 5.78E-01 1.90E+00 U WS 51 454753002 7/10/2018 Th-228 1.15E+00 1.74E+00 3.00E+00 U WS 51 454753002 7/10/2018 Zn-65 4.07E-01 8.07E-01 2.77E+00 U WS 51 454753002 7/10/2018 Zr-95 1.14E+00 8.45E-01 2.73E+00 U WS 51 457692002 8/14/2018 Ac-228 -2.92E+00 3.09E+00 7.01E+00 U WS 51 457692002 8/14/2018 Ag-108m -1.99E-01 4.18E-01 1.37E+00 U WS 51 457692002 8/14/2018 Ag-110m -6.86E-03 6.41E-01 2.05E+00 U WS 51 457692002 8/14/2018 Ba-140 -1.08E+00 3.77E+00 8.62E+00 U WS 51 457692002 8/14/2018 Be-7 6.43E+00 8.50E+00 1.37E+01 U WS 51 457692002 8/14/2018 Bi-214 2.47E+00 2.52E+00 3.81E+00 U WS 51 457692002 8/14/2018 Ce-141 -1.19E+00 9.93E-01 2.99E+00 U WS 51 457692002 8/14/2018 Ce-144 7.01E-01 3.26E+00 1.06E+01 U WS 51 457692002 8/14/2018 Co-57 -1.07E-01 4.41E-01 1.42E+00 U WS 51 457692002 8/14/2018 Co-58 -7.77E-02 4.81E-01 1.53E+00 U WS 51 457692002 8/14/2018 Co-60 8.20E-01 5.35E-01 1.81E+00 U WS 51 457692002 8/14/2018 Cr-51 -1.31E+00 4.81E+00 1.63E+01 U WS 51 457692002 8/14/2018 Cs-134 -5.61E-01 5.41E-01 1.60E+00 U WS 51 457692002 8/14/2018 Cs-137 5.70E-01 5.29E-01 1.74E+00 U WS 51 457692002 8/14/2018 Fe-59 -9.63E-01 9.87E-01 3.08E+00 U WS 51 457692002 8/14/2018 I-131 0.00E+00 2.06E+00 3.52E+00 U WS 51 457692002 8/14/2018 K-40 2.78E+02 2.53E+01 1.77E+01 WS 51 457692002 8/14/2018 La-140 -8.53E-01 9.12E-01 2.72E+00 U WS 51 457692002 8/14/2018 Mn-54 -2.88E-01 4.84E-01 1.49E+00 U WS 51 457692002 8/14/2018 Nb-95 3.73E-01 5.49E-01 1.80E+00 U WS 51 457692002 8/14/2018 Pb-212 1.06E+00 1.83E+00 2.70E+00 U WS 51 457692002 8/14/2018 Pb-214 1.29E+00 1.11E+00 3.74E+00 U WS 51 457692002 8/14/2018 Ru-103 -7.00E-01 5.58E-01 1.70E+00 U WS 51 457692002 8/14/2018 Ru-106 -7.22E-01 4.09E+00 1.33E+01 U WS 51 457692002 8/14/2018 Sb-124 2.00E+00 1.13E+00 3.86E+00 U WS 51 457692002 8/14/2018 Sb-125 -4.86E-01 1.27E+00 4.20E+00 U WS 51 457692002 8/14/2018 Se-75 8.45E-01 7.07E-01 2.19E+00 U WS 51 457692002 8/14/2018 Th-228 1.06E+00 1.83E+00 2.70E+00 U WS 51 457692002 8/14/2018 Zn-65 -8.63E-01 1.77E+00 3.76E+00 U WS 51 457692002 8/14/2018 Zr-95 5.19E-01 8.66E-01 2.85E+00 U WS 51 459720002 9/12/2018 Ac-228 5.31E+00 4.28E+00 7.12E+00 U WS 51 459720002 9/12/2018 Ag-108m -7.19E-01 4.28E-01 1.23E+00 U WS 51 459720002 9/12/2018 Ag-110m 4.79E-01 5.84E-01 1.98E+00 U WS 51 459720002 9/12/2018 Ba-140 2.39E+00 3.32E+00 1.08E+01 U WS 51 459720002 9/12/2018 Be-7 5.31E+00 4.41E+00 1.43E+01 U WS 51 459720002 9/12/2018 Bi-214 4.98E-01 1.82E+00 3.00E+00 U WS 51 459720002 9/12/2018 Ce-141 -4.80E-01 9.42E-01 2.94E+00 U WS 51 459720002 9/12/2018 Ce-144 2.63E+00 2.98E+00 9.45E+00 U WS 51 459720002 9/12/2018 Co-57 1.44E-01 3.86E-01 1.24E+00 U WS 51 459720002 9/12/2018 Co-58 5.64E-01 5.46E-01 1.46E+00 U WS 51 459720002 9/12/2018 Co-60 3.07E-01 4.79E-01 1.58E+00 U WS 51 459720002 9/12/2018 Cr-51 -7.37E+00 5.05E+00 1.54E+01 U WS 51 459720002 9/12/2018 Cs-134 2.96E-01 7.06E-01 1.74E+00 U WS 51 459720002 9/12/2018 Cs-137 7.76E-01 5.03E-01 1.58E+00 U -250-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 51 459720002 9/12/2018 Fe-59 1.99E+00 1.18E+00 3.78E+00 U WS 51 459720002 9/12/2018 I-131 1.88E+00 1.55E+00 5.09E+00 U WS 51 459720002 9/12/2018 K-40 3.35E+02 2.27E+01 1.23E+01 WS 51 459720002 9/12/2018 La-140 1.31E+00 1.10E+00 3.78E+00 U WS 51 459720002 9/12/2018 Mn-54 -5.15E-02 4.51E-01 1.46E+00 U WS 51 459720002 9/12/2018 Nb-95 1.16E+00 5.58E-01 1.76E+00 U WS 51 459720002 9/12/2018 Pb-212 -3.50E-01 1.33E+00 3.00E+00 U WS 51 459720002 9/12/2018 Pb-214 -2.01E+00 2.02E+00 3.46E+00 U WS 51 459720002 9/12/2018 Ru-103 1.33E-01 5.71E-01 1.78E+00 U WS 51 459720002 9/12/2018 Ru-106 -6.06E+00 4.21E+00 1.20E+01 U WS 51 459720002 9/12/2018 Sb-124 5.29E-01 1.10E+00 3.76E+00 U WS 51 459720002 9/12/2018 Sb-125 4.45E-01 1.11E+00 3.68E+00 U WS 51 459720002 9/12/2018 Se-75 5.19E-01 5.93E-01 2.00E+00 U WS 51 459720002 9/12/2018 Th-228 -3.50E-01 1.33E+00 3.00E+00 U WS 51 459720002 9/12/2018 Zn-65 2.07E+00 1.08E+00 3.42E+00 U WS 51 459720002 9/12/2018 Zr-95 4.00E-01 8.21E-01 2.81E+00 U WS 51 465130002 9/12/2018 H-3 -2.15E-01 1.88E+02 6.18E+02 U WS 51 462208002 10/17/2018 Ac-228 7.12E-01 4.23E+00 5.95E+00 U WS 51 462208002 10/17/2018 Ag-108m -6.69E-01 4.28E-01 1.25E+00 U WS 51 462208002 10/17/2018 Ag-110m 1.49E+00 1.17E+00 2.16E+00 U WS 51 462208002 10/17/2018 Ba-140 -3.41E-01 2.41E+00 7.81E+00 U WS 51 462208002 10/17/2018 Be-7 -2.06E+00 3.92E+00 1.26E+01 U WS 51 462208002 10/17/2018 Bi-214 0.00E+00 2.27E+00 3.20E+00 U WS 51 462208002 10/17/2018 Ce-141 5.94E-02 8.52E-01 2.51E+00 U WS 51 462208002 10/17/2018 Ce-144 3.60E+00 3.14E+00 9.92E+00 U WS 51 462208002 10/17/2018 Co-57 -3.43E-01 4.00E-01 1.24E+00 U WS 51 462208002 10/17/2018 Co-58 -1.14E-01 4.65E-01 1.56E+00 U WS 51 462208002 10/17/2018 Co-60 2.80E-02 5.15E-01 1.69E+00 U WS 51 462208002 10/17/2018 Cr-51 -3.37E+00 4.24E+00 1.38E+01 U WS 51 462208002 10/17/2018 Cs-134 1.25E+00 6.00E-01 1.92E+00 U WS 51 462208002 10/17/2018 Cs-137 -2.95E-01 4.95E-01 1.54E+00 U WS 51 462208002 10/17/2018 Fe-59 8.08E-01 1.11E+00 3.49E+00 U WS 51 462208002 10/17/2018 I-131 4.24E-01 7.88E-01 2.66E+00 U WS 51 462208002 10/17/2018 K-40 3.24E+02 2.57E+01 1.52E+01 WS 51 462208002 10/17/2018 La-140 -1.27E-01 8.64E-01 2.75E+00 U WS 51 462208002 10/17/2018 Mn-54 1.65E-01 4.65E-01 1.59E+00 U WS 51 462208002 10/17/2018 Nb-95 2.18E-01 7.93E-01 1.61E+00 U WS 51 462208002 10/17/2018 Pb-212 2.48E+00 2.08E+00 3.55E+00 U WS 51 462208002 10/17/2018 Pb-214 2.83E-02 1.57E+00 3.79E+00 U WS 51 462208002 10/17/2018 Ru-103 4.92E-01 5.76E-01 1.71E+00 U WS 51 462208002 10/17/2018 Ru-106 6.62E-01 4.82E+00 1.39E+01 U WS 51 462208002 10/17/2018 Sb-124 4.01E-01 1.10E+00 3.79E+00 U WS 51 462208002 10/17/2018 Sb-125 1.02E+00 1.22E+00 4.07E+00 U WS 51 462208002 10/17/2018 Se-75 -3.26E-01 5.74E-01 1.92E+00 U WS 51 462208002 10/17/2018 Th-228 2.48E+00 2.08E+00 3.55E+00 U WS 51 462208002 10/17/2018 Zn-65 -1.04E+00 1.26E+00 3.41E+00 U WS 51 462208002 10/17/2018 Zr-95 -4.49E-01 8.34E-01 2.56E+00 U WS 51 464693002 11/12/2018 Ac-228 -1.70E+00 2.84E+00 6.90E+00 U -251-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 51 464693002 11/12/2018 Ag-108m -4.41E-01 4.23E-01 1.30E+00 U WS 51 464693002 11/12/2018 Ag-110m 7.42E-01 6.96E-01 2.35E+00 U WS 51 464693002 11/12/2018 Ba-140 -2.08E+00 2.96E+00 9.19E+00 U WS 51 464693002 11/12/2018 Be-7 8.36E+00 4.66E+00 1.46E+01 U WS 51 464693002 11/12/2018 Bi-214 1.08E+00 2.49E+00 3.69E+00 U WS 51 464693002 11/12/2018 Ce-141 -2.61E+00 1.39E+00 2.62E+00 U WS 51 464693002 11/12/2018 Ce-144 -1.33E+00 2.76E+00 8.55E+00 U WS 51 464693002 11/12/2018 Co-57 -3.76E-01 3.67E-01 1.10E+00 U WS 51 464693002 11/12/2018 Co-58 9.97E-01 5.86E-01 1.75E+00 U WS 51 464693002 11/12/2018 Co-60 9.53E-01 5.72E-01 1.87E+00 U WS 51 464693002 11/12/2018 Cr-51 7.88E+00 5.03E+00 1.62E+01 U WS 51 464693002 11/12/2018 Cs-134 6.90E-02 4.96E-01 1.68E+00 U WS 51 464693002 11/12/2018 Cs-137 2.52E-01 4.95E-01 1.60E+00 U WS 51 464693002 11/12/2018 Fe-59 3.29E-01 9.97E-01 3.33E+00 U WS 51 464693002 11/12/2018 I-131 -9.62E-01 1.21E+00 3.85E+00 U WS 51 464693002 11/12/2018 K-40 2.79E+02 2.25E+01 1.67E+01 WS 51 464693002 11/12/2018 La-140 4.13E-01 1.54E+00 3.19E+00 U WS 51 464693002 11/12/2018 Mn-54 6.14E-03 9.28E-01 1.69E+00 U WS 51 464693002 11/12/2018 Nb-95 -2.25E-01 5.36E-01 1.78E+00 U WS 51 464693002 11/12/2018 Pb-212 1.42E+00 1.62E+00 3.14E+00 U WS 51 464693002 11/12/2018 Pb-214 2.51E+00 2.47E+00 3.75E+00 U WS 51 464693002 11/12/2018 Ru-103 -7.56E-01 5.71E-01 1.68E+00 U WS 51 464693002 11/12/2018 Ru-106 6.42E+00 4.65E+00 1.48E+01 U WS 51 464693002 11/12/2018 Sb-124 7.49E-01 1.10E+00 3.80E+00 U WS 51 464693002 11/12/2018 Sb-125 -1.10E+00 1.29E+00 4.04E+00 U WS 51 464693002 11/12/2018 Se-75 3.40E-01 5.81E-01 1.96E+00 U WS 51 464693002 11/12/2018 Th-228 1.42E+00 1.62E+00 3.14E+00 U WS 51 464693002 11/12/2018 Zn-65 -1.57E+00 1.12E+00 3.27E+00 U WS 51 464693002 11/12/2018 Zr-95 7.44E-01 1.01E+00 3.43E+00 U WS 51 466552002 12/4/2018 Ac-228 -8.76E+00 3.83E+00 6.23E+00 U WS 51 466552002 12/4/2018 Ag-108m 3.05E-02 3.78E-01 1.28E+00 U WS 51 466552002 12/4/2018 Ag-110m -4.34E-01 5.67E-01 1.76E+00 U WS 51 466552002 12/4/2018 Ba-140 -3.59E+00 2.29E+00 6.77E+00 U WS 51 466552002 12/4/2018 Be-7 -4.43E-01 4.90E+00 1.18E+01 U WS 51 466552002 12/4/2018 Bi-214 7.34E-01 2.38E+00 3.55E+00 U WS 51 466552002 12/4/2018 Ce-141 -1.64E+00 1.02E+00 2.93E+00 U WS 51 466552002 12/4/2018 Ce-144 -1.84E+00 3.51E+00 1.11E+01 U WS 51 466552002 12/4/2018 Co-57 8.64E-01 4.91E-01 1.48E+00 U WS 51 466552002 12/4/2018 Co-58 4.89E-01 6.29E-01 1.31E+00 U WS 51 466552002 12/4/2018 Co-60 7.25E-01 4.58E-01 1.47E+00 U WS 51 466552002 12/4/2018 Cr-51 -7.80E+00 4.77E+00 1.46E+01 U WS 51 466552002 12/4/2018 Cs-134 -1.28E-01 3.99E-01 1.28E+00 U WS 51 466552002 12/4/2018 Cs-137 4.02E-01 4.27E-01 1.42E+00 U WS 51 466552002 12/4/2018 Fe-59 -2.24E-01 9.03E-01 2.86E+00 U WS 51 466552002 12/4/2018 I-131 2.31E-01 9.19E-01 3.14E+00 U WS 51 466552002 12/4/2018 K-40 2.90E+02 2.22E+01 1.18E+01 WS 51 466552002 12/4/2018 La-140 4.35E-01 7.55E-01 2.59E+00 U WS 51 466552002 12/4/2018 Mn-54 1.01E-01 4.20E-01 1.38E+00 U WS 51 466552002 12/4/2018 Nb-95 5.68E-02 4.11E-01 1.36E+00 U WS 51 466552002 12/4/2018 Pb-212 -1.58E+00 1.59E+00 3.37E+00 U -252-Seabrook REMP Summary of 2018 Data SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) WS 51 466552002 12/4/2018 Pb-214 9.09E-01 2.53E+00 4.10E+00 U WS 51 466552002 12/4/2018 Ru-103 4.64E-02 4.47E-01 1.51E+00 U WS 51 466552002 12/4/2018 Ru-106 2.48E-01 3.63E+00 1.21E+01 U WS 51 466552002 12/4/2018 Sb-124 9.03E-02 9.27E-01 3.12E+00 U WS 51 466552002 12/4/2018 Sb-125 1.22E+00 1.18E+00 3.98E+00 U WS 51 466552002 12/4/2018 Se-75 8.41E-01 7.05E-01 2.17E+00 U WS 51 466552002 12/4/2018 Th-228 -1.58E+00 1.59E+00 3.37E+00 U WS 51 466552002 12/4/2018 Zn-65 4.07E-01 9.23E-01 3.00E+00 U WS 51 466552002 12/4/2018 Zr-95 -1.16E+00 7.84E-01 2.28E+00 U WS 51 469372002 12/4/2018 H-3 1.15E+01 2.62E+02 4.37E+02 U FLAGS A blank Flag field indicates that the measured activity is considered positive as it is greater than the MDC and has no other qualifiers noted.

U: Target isotope was analyzed for but not detected above the MDC and LLD.

UI: Uncertain identification for gamma spectroscopy.

X: Lab-specific qualifier:

(1) False positive due to the presence of radon gas in the water.

M: Reported result is less than the LLD and greater than the MDC.

DL: Measured MDC is greater than the LLD.

DL*: Near miss of MDC being within round

-off difference of being greater than the LLD.

-253-

SBK-L-19059, Annual Radiological Environmental Operating Report

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SBK-L-19059, Annual Radiological Environmental Operating Report

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