Text

Annual Radiological Environmental Operating Report
	ML13142A313
Person / Time
Site:	Dresden
Issue date:	05/13/2013
From:	Czufin D; Exelon Generation Co
To:	; Document Control Desk, NRC/FSME
References
	SVPLTR 13-0016
	Download: ML13142A313 (130)
	v • d • e

,d M

Dresden Nuclear Power Station A6500 North Dresden Road Exe!.on Generation° Morris, IL60450 Exel n Ge eraton,815 942 2920 Telephone www.exeloncorp.com May 13, 2013 SVPLTR # 13-0016 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Dresden Nuclear Power Station, Units 1, 2, and 3 Facility Operating License No. DPR-2 Renewed Facility Operating License Nos. DPR-19 and DPR-25 NRC Docket Nos.50-010, 50-237, and 50-249

Subject:

Dresden Nuclear Power Station 2012 Annual Radiological Environmental Operating Report Enclosed is the Exelon Dresden Nuclear Power Station 2012 Annual Radiological Environmental Operating Report, submitted in accordance with Section 6.9.A.3 of the Unit 1 Dresden Nuclear Power Station Technical Specifications and Section 5.6.2, "Annual Radiological Environmental Operating Report," of the Units 2 and 3 Technical Specifications.

This report provides the results of the radiological environmental monitoring program for the 2012 calendar year.

In addition, Appendix F of the report contains the results of groundwater monitoring conducted in accordance with Exelon's Radiological Groundwater Protection Program, which is a voluntary program implemented in 2006. This information is being reported in accordance with a nuclear industry initiative.

Should you have any questions concerning this letter, please contact Hal Dodd, Regulatory Assurance Manager, at (815) 416-2800.

Respectf ully, David M. Czuf inQY Site Vice President Dresden Nuclear Power Station Attachment - Annual Radiological Environmental Operating Report cc:

Regional Administrator - NRC Region III NRC Senior Resident - Dresden Nuclear Power Station

Docket No:

50-010 50-237 50-249 DRESDEN NUCLEAR POWER STATION UNITS 1, 2 and 3 Annual Radiological Environmental Operating Report 1 January Through 31 December 2012 Prepared By Teledyne Brown Engineering Environmental Services

'mow P Exelon Generation, Dresden Nuclear Power Station Morris, IL 60450 May 2013

Intentionally left blank

Table Of Contents I. Sum mary and Conclusions..............................................................................................

1 I1. Introduction.............................................................................................................

2 A. Objectives of the REM P..................................................................................

2 B. Im plementation of the Objectives....................................................................

2 II1. Program Description..................................................................................................

3 A. Sam ple Collection...........................................................................................

3 B. Sam ple Analysis..............................................................................................

4 C. Data Interpretation........................................................................................

5 D. Program Exceptions.......................................................................................

6 E. Program Changes...........................................................................................

8 IV. Results and Discussion...........................................................................................

8 A. Aquatic Environment.......................................................................................

8

1. Surface W ater.......................................................................................

8

2. Ground W ater.......................................................................................

9 3. F is h..................................................................................................

.. 1 0

4. Sediment............................................................................................

10 B. Atmospheric Environment.............................................................................

10

1. Airborne..............................................................................................

10

a. Air Particulates.........................................................................

10

b. Airborne Iodine........................................................................

11

2. Terrestrial............................................................................................

12 a. M ilk........................................................................................

12

b. Food Products........................................................................

12 C. Am bient Gam ma Radiation...........................................................................

12 D. Land Use Survey.........................................................................................

13 E. Errata Data.....................................................................................................

14 F. Summary of Results - Inter-laboratory Comparison Program......................

14

Appendices Appendix A Tables Table A-1 Appendix B Tables Table B-1 Table B-2 Figures Figure B-1 Figure B-2 Appendix C Tables Table C-1.1 Table C-1.2 Table C-1.3 Table C-11.1 Table C-11.2 Radiological Environmental Monitoring Report Summary (Meets requirements of NUREG 1302)

Radiological Environmental Monitoring Program Annual Summary for the Dresden Nuclear Power Station, 2012 Location Designation, Distance & Direction, and Sample Collection &

Analytical Methods Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Dresden Nuclear Power Station, 2012 Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Dresden Nuclear Power Station, 2012 Dresden Station Inner Ring OSLD Locations, Fish, Water, and Sediment Locations, 2012 Dresden Station Fixed Air Sampling and OSLD Sites, Outer Ring OSLD Locations and Milk Location, 2012 Data Tables and Figures - Primary Laboratory Concentrations of Gross Beta in Surface Water Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Tritium in Ground Water Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Gamma Emitters in Ground Water Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

ii

Table C-111.1 Table C-IV.1 Table C-V. 1 Table C-V.2 Table C-V.3 Table C-VI. 1 Table C-VII.1 Table C-VII.2 Table C-VIII.1 Table C-IX.1 Table C-IX.2 Table C-IX.3 Fi-gures Figure C-1 Figure C-2 Figure C-3 Figure C-4 Figure C-5 Figure C-6 Concentrations of Gamma Emitters in Fish Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Gamma Emitters in Sediment Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Gross Beta in Air Particulate Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Monthly and Yearly Mean Values of Gross Beta Concentrations (E-3 pCi/cu meter) in Air Particulate Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Gamma Emitters in Air Particulate Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of 1-131 in Air Iodine Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of 1-131 in Milk Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Gamma Emitters in Milk Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Gamma Emitters in Vegetation Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Quarterly OSLD Results for Dresden Nuclear Power Station, 2012.

Mean Quarterly OSLD Results for the Inner Ring, Outer Ring, Other and Control Locations for Dresden Nuclear Power Station, 2012.

Summary of the Ambient Dosimetry Program for Dresden Nuclear Power Station, 2012.

Surface Water - Gross Beta - Station D-52 (C) Collected in the Vicinity of DNPS, 2000 - 2012.

Surface Water - Gross Beta - Stations D-54 (C) and D-57 (C)

Collected in the Vicinity of DNPS, 2003 - 2012.

Surface Water - Gross Beta - Stations D-21 and D-51 Collected in the Vicinity of DNPS, 2000 - 2012.

Surface Water - Tritium - Station D-52 (C) Collected in the Vicinity of DNPS, 2000 - 2012.

Surface Water - Tritium - Station D-54 (C) and D-57 (C) Collected in the Vicinity of DNPS, 2003 - 2012.

Surface Water - Tritium - Stations D-21 and D-51 Collected in the Vicinity of DNPS, 2000 - 2012.

iii

Figure C-7 Figure C-8 Figure C-9 Figure C-10 Figure C-11 Figure C-12 Figure C-13 Figure C-14 Figure C-15 Appendix D Tables Ground Water - Tritium - Stations D-23 and D-35 Collected in the Vicinity of DNPS, 2000 - 2012.

Air Particulate - Gross Beta - Stations D-01 and D-02 Collected in the Vicinity of DNPS, 2000 - 2012.

Air Particulate - Gross Beta - Stations D-03 and D-04 Collected in the Vicinity of DNPS, 2000 - 2012.

Air Particulate - Gross Beta - Stations D-07 and D-1 2 (C) Collected in the Vicinity of DNPS, 2000 - 2012.

Air Particulate - Gross Beta - Stations D-45 and D-53 Collected in the Vicinity of DNPS, 2000 - 2012.

Air Particulate - Gross Beta - Stations D-08 and D-10 Collected in the Vicinity of DNPS, 2005 - 2012.

Air Particulate - Gross Beta - Stations D-13 and D-14 Collected in the Vicinity of DNPS, 2005 - 2012.

Air Particulate - Gross Beta - Stations D-55 and D-56 Collected in the Vicinity of DNPS, 2006 - 2012.

Air Particulate - Gross Beta - Station D-58 Collected in the Vicinity of DNPS, 2011 - 2012.

Inter-Laboratory Comparison Program Table D-1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2012 Table D-2 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2012 Table D-3 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering, 2012 Appendix E Errata Data Appendix F Annual Radiological Groundwater Protection Program Report (ARGPPR) iv

I.

Summary and Conclusions This report on the Radiological Environmental Monitoring Program conducted for the Dresden Nuclear Power Station (DNPS) by Exelon covers the period 1 January 2012 through 31 December 2012. During that time period 2,048 analyses were performed on 1,633 samples. In assessing all the data gathered for this report it was concluded that the operation of DNPS had no adverse radiological impact on the environment.

Surface water samples were analyzed for concentrations of gross beta, tritium and gamma emitting nuclides. Ground water samples were analyzed for concentrations of tritium and gamma emitting nuclides. No anthropogenic gamma emitting nuclides were detected. Gross beta and tritium activities detected were consistent with those detected in previous years.

Fish (commercially and recreationally important species), and sediment samples were analyzed for concentrations of gamma emitting nuclides. No fission or activation products were detected in fish. Cesium-1 37 was detected in one sediment sample at a concentration consistent with levels observed in previous years. No power station produced fission or activation products were found in sediment.

Air particulate samples were analyzed for concentrations of gross beta and gamma emitting nuclides. Gross beta results at the indicator locations were consistent with those at the control location. No fission or activation products were detected.

High sensitivity 1-131 analyses were performed on weekly air samples. All results were less than the minimum detectable activity for 1-131.

Cow milk samples were analyzed for concentrations of 1-131 and gamma emitting nuclides. All 1-131 results were below the minimum detectable activity.

Concentrations of naturally occurring K-40 were found. No fission or activation products were found.

Food product samples were analyzed for concentrations of gamma emitting nuclides. No fission or activation products were detected.

Environmental gamma radiation measurements were performed quarterly using Optically Stimulated Luminescent Dosimetry (OSLD). Beginning in 2012, Exelon changed the type of dosimetry used for the Radiological Environmental Monitoring Program (REMP). Optically Stimulated Luminescent Dosimetry were deployed and Thermoluminescent Dosimetry (TLD) were discontinued. This change may result in a step change in readings, up or down, depending on site characteristics. The relative comparison to control locations remains valid.

OSLD technology is different than that used in a TLD but has the same purpose (to measure direct radiation).

II.

Introduction The Dresden Nuclear Power Station (DNPS), consisting of one retired reactor and two operating boiling water reactors owned and operated by Exelon Corporation, is located in Grundy County, Illinois. Unit No. 1 went critical in 1960 and was retired in 1978. Unit No. 2 went critical on 16 June 1970. Unit No. 3 went critical on 02 November 1971. The site is located in northern Illinois, approximately 12 miles southwest of Joliet, Illinois at the confluence of the Des Plaines and Kankakee Rivers where they form the Illinois River.

This report covers those analyses performed by Teledyne Brown Engineering (TBE) and Landauer on samples collected during the period 1 January 2012 through 31 December 2012.

An assessment of the station's radioactive effluent monitoring results and radiation dose via the principle pathways of exposure resulting from plant emissions of radioactivity including the maximum noble gas gamma and beta air doses in the unrestricted area, an annual summary of meteorological conditions including wind speed, wind direction and atmospheric stability and the result of the 40CFR1 90 uranium fuel cycle dose analysis for the calendar year are published in the station's Annual Radioactive Effluent Release Report.

A.

Objective of the Radiological Environmental Monitoring Program (REMP)

The objectives of the REMP are to:

1.

Provide data on measurable levels of radiation and radioactive materials in the site environs.

2.

Evaluate the relationship between quantities of radioactive material released from the plant and resultant radiation doses to individuals from principal pathways of exposure.

B.

Implementation of the Objectives The implementation of the objectives is accomplished by:

1.

Identifying significant exposure pathways.

2.

Establishing baseline radiological data of media within those pathways.

3.

Continuously monitoring those media before and during Station operation to assess Station radiological effects (if any) on man and the environment.

Ill.

Program Description A.

Sample Collection Samples for the DNPS REMP were collected for Exelon Nuclear by Environmental Incorporated Midwest Laboratory (EIML). This section describes the general collection methods used by EIML to obtain environmental samples for the DNPS REMP in 2012. Sample locations and descriptions can be found in Appendix B, Table B-1 and Figures B-1 and B-2. The collection methods used by EIML are listed in Table B-2.

Aquatic Environment The aquatic environment was evaluated by performing radiological analyses on samples of surface water (SW), ground water (GW), fish (FI) and sediment (SS). Samples were collected from three surface water locations (D-21, D-52 and D-57) and composited for analysis. Control locations were D-52 and D-57. Samples were collected quarterly or more frequently from two well water locations (D-23 and D-35). All samples were collected in new unused plastic bottles, which were rinsed with source water prior to collection. Fish samples comprising the flesh of channel catfish, largemouth bass, common carp and freshwater drum were collected semiannually at two locations, D-28 and D-46 (Control).

Sediment samples composed of recently deposited substrate were collected at one location semiannually, D-27.

Atmospheric Environment The atmospheric environment was evaluated by performing radiological analyses on samples of air particulate and airborne iodine (AP/AI).

Airborne iodine and particulate samples were collected at fourteen locations (D-01, D-02, D-03, D-04, D-07, D-08, D-10, D-12, D-14, D-45, D-53, D-55, D-56 and D-58). The control location was D-12. Airborne iodine and particulate samples were obtained at each location using a vacuum pump with charcoal and glass fiber filters attached. The pumps were run continuously and sampled air at the rate of approximately one cubic foot per minute. The air filters and air iodine samples were replaced weekly and sent to the laboratory for analysis.

Terrestrial Environment Milk (M) samples were collected biweekly at one control location (D-25) from May through October and monthly from November through April.

There are no milking animals within 10 km of the site. All samples were collected in new unused two gallon plastic bottles from the bulk tank at each location, preserved with sodium bisulfite and shipped promptly to the laboratory. Food products (FL) were collected annually in September at five locations (D-Control, D-Quad 1, D-Quad 2, D-Quad 3 and D-Quad 4).

The control location was D-Control. Various types of samples were collected and placed in new unused plastic bags and sent to the laboratory for analysis.

Ambient Gamma Radiation Beginning in 2012, Exelon changed the type of dosimetry used for the Radiological Environmental Monitoring Program (REMP).

Optically Stimulated Luminescent Dosimetry (OSLD) were deployed and Thermoluminescent Dosimetry (TLD) were discontinued. This change may result in a step change in readings, up or down, depending on site characteristics. The relative comparison to control locations remains valid. OSLD technology is different than that used in a TLD but has the same purpose (to measure direct radiation).

Each location consisted of two OSLD sets. The OSLD locations were placed on and around the DNPS site as follows:

An inner ring consisting of 17 locations (D-58, D-101, D-102, D-103, D-104, D-105, D-106, D-107, D-108, D-109, D-110, D-111, D-112a, D-113, D-114, D-115 and D-116) at or near the site boundary.

An outer rinq consisting of 16 locations (D-201, D-202, D-203, D-204, D-205, D-206, D-207, D-208, D-209, D-210, D-211, D-212, D-213, D-214, D-215 and D-216) approximately 5 to 10 km from the site.

Other locations consisting of OSLD sets at the 13 air sampler locations (D-01, D-02, D-03, D-04, D-07, D-08, D-10, D-14, D-45, D-53, D-55, D-56 and D-58).

The balance of one location (D-12) represents the control area OSLD set.

The OSLDs were exchanged quarterly and sent to Landauer for analysis.

B.

Sample Analysis This section describes the general analytical methodologies used by TBE and EIML to analyze the environmental samples for radioactivity for the DNPS REMP in 2012. The analytical procedures used by the laboratories are listed in Appendix B Table B-2.

In order to achieve the stated objectives, the current program includes the following analyses:

1.

Concentrations of beta emitters in surface water and air particulates.

2.

Concentrations of gamma emitters in ground and surface water, air particulates, milk, fish, sediment and vegetation.

3.

Concentrations of tritium in ground and surface water.

4.

Concentrations of 1-131 in air and milk.

5.

Ambient gamma radiation levels at various site environs.

C.

Data Interpretation For the purpose of this report, Dresden Nuclear Power Station was considered operational at initial criticality. In addition, data were compared to previous years' operational data for consistency and trending. Several factors were important in the interpretation of the data:

1.

Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) was defined as the smallest concentration of radioactive material in a sample that would yield a net count (above background) that would be detected with only a 5% probability of falsely concluding that a blank observation represents a "real" signal. The LLD was intended as a before the fact estimate of a system (including instrumentation, procedure and sample type) and not as an after the fact criteria for the presence of activity. All analyses were designed to achieve the required DNPS detection capabilities for environmental sample analysis.

The minimum detectable concentration (MDC) is calculated the same as the LLD with the exception that the measurement is an after the fact estimate of the presence of activity.

2.

Net Activity Calculation and Reporting of Results Net activity for a sample was calculated by subtracting background activity from the sample activity. Since the REMP measures extremely small changes in radioactivity in the environment, background variations may result in sample activity being lower than the background activity effecting a negative number. An MDC was reported in all cases where positive activity was not detected.

Gamma spectroscopy results for each type of sample were grouped as follows:

For ground and surface water and vegetation 12 nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, 1-131, Cs-134, Cs-137, Ba-140 and La-140 were reported.

For fish, sediment, air particulate and milk 11 nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-134, Cs-137, Ba-140 and La-140 were reported.

Means and standard deviations of the results were calculated. The standard deviations represent the variability of measured results for different samples rather than single analysis uncertainty.

D.

Program Exceptions For 2012 the DNPS REMP had a sample recovery rate in excess of 99%.

Sample anomalies and missed samples are listed in the tables below:

Table D-1 LISTING OF SAMPLE ANOMALIES Sample Location Collection Reason Type Code Date AP/I D-01 01/06/12 No apparent reason for low reading of 144.4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

AP/I D-03 01/27/12 Low reading of 56.1 hours1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months due to tripped circuit breaker. The collector had to reset breaker.

AP/I D-03 02/10/12 Low reading of 44.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ; no electricity to pump; station notified.

Collector moved pump to alternate circuit.

AP/I D-07 02/17/12 No apparent reason for low reading of 131.0 hours0 days 0 hours 0 weeks 0 months .

AP/I D-04 02/24/12 No apparent reason for low reading of 148.4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

Table D-1 LISTING OF SAMPLE ANOMALIES (continued)

Sample Location Collection Reason Type Code Date AP/I D-01 05/11/12 No apparent reason for low reading of 147.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months .

AP/I D-01 05/11/12 No apparent reason for low reading of 149.7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months .

AP/I D-12 05/18/12 Low reading of 156.8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ; ComEd working on substation.

AP/I D-04 05/25/12 No apparent reason for low reading of 163.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months .

AP/I D-03 06/01/12 Low reading of 152.6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months ; pump off due to thermal overload; pump restarted. Est. FLA of 60 cfh.

OSLD D-211-2 06/01/12 OSLD found on ground during monthly check; collector remounted.

AP/I D-08 11/02/12 Holes in AP due to insects; collector sprayed area with insecticide.

Table D-2 LISTING OF MISSED SAMPLES Sample Location Collection Reason Type Code Date OSLD OSLD OSLD OSLD D-107-1 03/31/12 D-204-1,2 05/04/12 OSLDs missing during quarterly exchange. Collector placed new 2 d quarter OSLDs.

OSLDs missing; major construction area; fence missing; collector will move OSLDs to permanent fence 200 feet east.

Collector placed spares 3017155R-3016981 R.

Collector placed spares 3017156R-3016982R.

D-204-1 D-204-2 05/11/12 05/11/12 Table D-2 LISTING OF MISSED SAMPLES (continued)

Sample Location Collection Reason Type Code Date OSLD D-205-1 09/28/12 One of two OSLDs missing during quarterly exchange; collector placed new 4h quarter OSLD.

AP/l D-08 10/26/12 AP eaten or torn off by insects or birds; only quarter ring left.

OSLD D-201-2 12/28/12 One of two OSLDs missing during quarterly exchange; collector placed new 1 st quarter 2013 OSLD.

Each program exception was reviewed to understand the causes of the program exception. Sampling and maintenance errors were reviewed with the personnel involved to prevent recurrence. Occasional equipment breakdowns and power outages were unavoidable.

The overall sample recovery rate indicates that the appropriate procedures and equipment are in place to assure reliable program implementation.

E.

Program Changes No program changes in 2012.

IV.

Results and Discussion A.

Aquatic Environment

1.

Surface Water Samples were composited or taken weekly and composited for analysis at three locations (D-21, D-52 and D-57). Of these locations only D-21, located downstream, could be affected by Dresden's effluent releases. The following analyses were performed:

Gross Beta Monthly composites from all locations were analyzed for concentrations of gross beta (Table C-I.1, Appendix C). Gross Beta was detected in all samples. The values ranged from 2.6 to 12.8 pCi/l. Concentrations detected were consistent with those detected in previous years (Figures C-1, C-2 and C-3, Appendix C).

Tritium Quarterly composites from all locations were analyzed for tritium activity (Table C-1.2, Appendix C). Four samples at indicator station D-21 were positive for tritium. The values ranged from 295 to 749 pCi/L. Three samples at control station D-57 were positive for tritium. The values ranged from 154 to 1440 pCi/L.

Concentrations detected were consistent with those detected in previous years (Figures C-4, C-5 and C-6, Appendix C).

Gamma Spectrometry Monthly composites from all locations were analyzed for gamma emitting nuclides (Table C-1.3, Appendix C). No nuclides were detected and all required LLDs were met.

2.

Ground Water Quarterly or more frequent grab samples were collected at two locations (D-23 and D-35). These locations could be affected by Dresden's effluent releases and by sources upstream on the Kankakee River. The following analyses were performed:

Tritium All samples were analyzed for tritium activity (Table C-I 1.1, Appendix C). Tritium was detected in 12 of 16 samples. The concentrations ranged from 258 to 444 pCi/l. Concentrations detected were consistent with those detected in previous years (Figure C-7, Appendix C).

Gamma Spectrometry All samples were analyzed for gamma emitting nuclides (Table C-11.2, Appendix C). No nuclides were detected and all required LLDs were met.

3.

Fish Fish samples comprised of channel catfish, largemouth bass, common carp and freshwater drum were collected at two locations (D-28 and D-46) semiannually. Location D-28 could be affected by Dresden's effluent releases. The following analysis was performed:

Gamma Spectrometry The edible portion of fish samples from both locations was analyzed for gamma emitting nuclides (Table C-111.1, Appendix C).

Naturally occurring K-40 was found at all stations. No fission or activation products were detected.

4.

Sediment Aquatic sediment samples were collected at one location (D-27) semiannually. This downstream location could be affected by Dresden's effluent releases. The following analysis was performed:

Gamma Spectrometry Sediment samples from the location were analyzed for gamma emitting nuclides (Table C-IV. 1, Appendix C). Cesium-1 37 was detected in one sample at a concentration of 65 pCi/kg dry. The activity detected was consistent with those detected in previous years and is likely due to fallout from above-ground nuclear weapons testing. No other fission or activation products were detected.

B.

Atmospheric Environment 1.

Airborne

a.

Air Particulates Continuous air particulate samples were collected from 14 locations on a weekly basis. The 14 locations were separated into four groups: On-site samplers (D-01, D-02 and D-03), Near-field samplers within 4 km of the site (D-04, D-07, D-45, D-53, D-56 and D-58), Far-field samplers between 4 and 10 km from the site (D-08, D-10, D-14 and D-55) and the Control sampler between 10 and 30 km from the site (D-12). The following analyses were performed:

Gross Beta Weekly samples were analyzed for concentrations of beta emitters (Table C-V.1 and C-V.2, Appendix C).

Detectable gross beta activity was observed at all locations.

Comparison of results among the four groups aid in determining the effects, if any, resulting from the operation of DNPS. The results from the On-Site locations ranged from 8 to 53 E-3 pCi/m 3 with a mean of 19 E-3 pCi/m. The results from the Near-Field locations ranged from 6 to 51 E-3 pCi/m 3 with a mean of 20 E-3 pCi/m. The results from the Far-Field locations ranged from 8 to 59 E-3 pCi/m 3 with a mean of 21 E-3 pCi/m 3. The results from the Control location ranged from 9 to 51 E-3 pCi/m 3 with a mean of 20 E-3 pCi/m 3. Comparison of the 2012 air particulate data with previous years data indicate no effects from the operation of DNPS. In addition a comparison of the weekly mean values for 2012 indicate no notable differences among the four groups (Figures C-8 through C-14, Appendix C).

Gamma Spectrometry Samples were composited quarterly and analyzed for gamma emitting nuclides (Table C-V.3, Appendix C).

Naturally occurring Be-7 due to cosmic ray activity was detected in 54 of 56 samples and ranged from 32.0 to 116 E-3 pCi/m 3. Naturally occurring K-40 was detected in one of 56 samples at a concentration of 23.2 E-3 pCi/m 3. No anthropogenic nuclides were detected and all required LLDs were met. These samples were consistent with historical quarterly results. All other nuclides were less than the MDC.

b.

Airborne Iodine Continuous air samples were collected from 14 locations (D-01, D-02, D-03, D-04, D-07, D-08, D-10, D-12, D-14, D-45, D-53, D-55, D-56 and D-58) and analyzed weekly for 1-131 (Table C-VI. 1, Appendix C). All results were less than the MDC for 1-131.

2.

Terrestrial

a.

Milk There are no indicator locations within 10 kilometers of the station. Samples were collected from one control location (D-25) biweekly May through October and monthly November through April. The following analyses were performed:

Iodine-1 31 Milk samples from the location were analyzed for concentrations of 1-131 (Table C-VII.1, Appendix C). No nuclides were detected and all required LLDs were met.

Gamma Spectrometry Each milk sample was analyzed for concentrations of gamma emitting nuclides (Table C-VII.2, Appendix C).

Naturally occurring K-40 activity was found in all samples.

No other nuclides were detected and all required LLDs were met.

b.

Food Products Food product samples were collected at five locations (D-Control, D-Quad 1, D-Quad 2, D-Quad 3 and D-Quad 4) when available. Four locations, (D-Quad 1, D-Quad 2, D-Quad 3 and D-Quad 4) could be affected by Dresden's effluent releases. The following analysis was performed:

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-VIII.1, Appendix C). No nuclides were detected and all required LLDs were met.

C.

Ambient Gamma Radiation Beginning in 2012, Exelon changed the type of dosimetry used for the Radiological Environmental Monitoring Program (REMP).

Optically Stimulated Luminescent Dosimetry (OSLD) were deployed and Thermoluminescent Dosimetry (TLD) were discontinued. This change may result in a step change in readings, up or down, depending on site characteristics. The relative comparison to control locations remains valid. OSLD technology is different than that used in a TLD but has the same purpose (to measure direct radiation). Forty-six OSLD locations were established around the site. Results of OSLD measurements are listed in Tables C-IX.1 to C-IX.3, Appendix C.

Most OSLD measurements were below 30 mR/quarter, with a range of 15 to 34.3 mR/quarter. A comparison of the Inner Ring, Outer Ring and Other locations' data to the Control Location data, indicate that the ambient gamma radiation levels from the Control location (D-12-01and D-12-02) were comparable.

D.

Land Use Survey A Land Use Survey conducted on August 26, 2012 around the Dresden Nuclear Power Station (DNPS) was performed by EIML for Exelon Nuclear to comply with Section 12.6.2 of the Dresden Offsite Dose Calculation Manual (ODCM). The purpose of the survey was to document the nearest resident or industrial facility, milk producing animal, and livestock in each of the sixteen 22 % degree sectors within 10 km around the site. There were no changes required to the DNPS REMP as a result of this survey. The results of this survey are summarized below.

Distance in Miles from the Sector Residence Miles AN 1.5 B NNE 0.8 CNE 0.8 D ENE 0.7 EE 1.1 F ESE 1.0 GSE 0.6 H SSE 0.5 JS 0.5 K SSW 3.3 L SW 3.6 M WSW 5.8 NW 3.5 P WNW 3.7 Q NW 2.6 R NNW 0.8 DNPS Reactor Buildings Livestock Milk Farm Miles Miles 1.4 6.0 5.8 1.7 16.0 11.4 0.5 0.5 0.5 1.0 E.

Errata Data No errata data was discovered in 2012.

F.

Summary of Results - Inter-Laboratory Comparison Program The primary laboratory analyzed Performance Evaluation (PE) samples of air particulate, air iodine, milk, soil, vegetation and water matrices (Appendix D). The PE samples, supplied by Analytics Inc., Environmental Resource Associates (ERA) and DOE's Mixed Analyte Performance Evaluation Program (MAPEP), were evaluated against the following pre-set acceptance criteria:

1.

Analytics Evaluation Criteria Analytics' evaluation report provides a ratio of laboratory results and Analytics' known value. Since flag values are not assigned by Analytics, TBE-ES evaluates the reported ratios based on internal QC requirements, which are based on the DOE MAPEP criteria.

2.

ERA Evaluation Criteria ERA's evaluation report provides an acceptance range for control and warning limits with associated flag values. ERA's acceptance limits are established per the USEPA, NELAC, state specific PT program requirements or ERA's SOP for the Generation of Performance Acceptance Limits, as applicable. The acceptance limits are either determined by a regression equation specific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.

3.

DOE Evaluation Criteria MAPEP's evaluation report provides an acceptance range with associated flag values.

The MAPEP defines three levels of performance: Acceptable (flag = "A"), Acceptable with Warning (flag = "W"), and Not Acceptable (flag = "N"). Performance is considered acceptable when a mean result for the specified analyte is +/- 20% of the reference value. Performance is acceptable with warning when a mean result falls in the range from +/-20% to +/-30% of the reference value (i.e., 20% < bias < 30%). If the bias is greater than 30%, the results are deemed not acceptable.

For the TBE laboratory, 12 out of 18 analytes met the specified acceptance criteria. Six analytes (Co-60, Gross Alpha, Gross Beta, Sr-89, Sr-90 and Zn-65) did not meet the specified acceptance criteria for the following reason:

1.

Teledyne Brown Engineering's MAPEP March 2012 Co-60 in soil result of 7.61 Bq/kg was higher than the known value of 1.56 Bq/kg, resulting in a found to known ratio of 4.88 on a sensitivity evaluation. NCR 12-08 was initiated to investigate this failure. No cause could be found for the failure. TBE is monitoring the Co-60 in soil analyses on a case-to-case basis.

2.

Teledyne Brown Engineering's MAPEP March 2012 Zn-65 in AP result of 4.19 Bq/sample was higher than the known value of 2.99 Bq/sample, exceeding the upper control limit of 3.89 Bq/sample.

NCR 12-08 was initiated to investigate this failure. No cause could be found for the failure and is considered an anomaly specific to the MAPEP sample. The first and second quarter 2012 Analytics AP Zn-65 analyses were acceptable.

3.

Teledyne Brown Engineering's MAPEP September 2012 Sr-90 in water result of 19.6 pCi/L was higher than the known value of 12.2 pCi/L, exceeding the upper control limit of 15.9 pCi/L. NCR 12-11 was initiated to investigate this failure. An incorrect aliquot was entered into LIMS. Using the correct aliquot, the result would have fallen within the acceptance range.

4.

Teledyne Brown Engineering's ERA May 2012 Gross Alpha in water result of 82.4 pCi/L was higher than the known value of 62.9 pCi/L, which exceeded the upper control limit of 78.0 pCi/L. NCR 12-05 was initiated to investigate this failure. The G-1 detector is slightly biased high for Th-230 based measurements. The G-1 detector is used only for ERA samples. The detector was recalibrated.

5.

Teledyne Brown Engineering's ERA November 2012 Gross Beta in water result of 59.3 pCi/L was higher than the known value of 39.2 pCi/L, which exceeded the upper control limit of 46.7 pCi/L. NCR 12-13 was initiated to investigate this failure. The rerun result of 44.8 fell within the control limits. It appears an incorrect aliquot was entered into LIMS.

6.

Teledyne Brown Engineering's ERA November 2012 Sr-89 in water result of 46.5 pCi/L was higher than the known value of 39.1 pCi/L, which exceeded the upper control limit of 46.1 pCi/L. NCR 12-13 was initiated to investigate this failure. The found to known ratio was 1.19, which TBE considers acceptable with warning.

APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT

SUMMARY

Intentionally left blank

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY:

MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS SURFACE WATER GR-B 36 4

8 7.5 9.2 D-52 CONTROL 0

(PCI/LITER)

(12/12)

(2.6/11.1)

(24/24)

(4.1/12.8) 693 (3/8)

(154/1440)

(12/12)

(7.1/12.8) 693 (3/4)

(154/1440)

DESPLAINES RIVER - UPSTREAM 1.1 MILES ESE OF SITE H-3 GAMMA MN-54 12 36 2000 441 (4/4)

(295/749) 15

<LLD D-57 CONTROL 0

KANKIAKEE RIVER AT WILL ROAD(CONTROL) 2.0 MILES SE OF SITE CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 15

<LLD 30

<LLD 15

<LLD 30

<LLD 15

<LLD 30

<LLD

<LLD 0

0 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY: MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RdANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS SURFACE WATER 1-131 15

<LLD

<LLD 0

(PCI/LITER)

CS-134 CS-137 BA-140 LA-140 15

<LLD 18

<LLD 60

<LLD 15

<LLD

<LLD 0

0 0

GROUND WATER (PCI/LITER)

H-3 16 16 2000 327 (12/16)

(258/444)

NA 327 (12/12)

(258/444)

D-23 INDICATOR THORSEN WELL 0.7 MILES S OF SITE GAMMA MN-54 CO-58 15

<LLD 15

<LLD NA 0

NA 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAS AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY:

MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS GROUND WATER FE-59 30

<LLD NA 0

(PCI,/LITER)

CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 15

<LLD 30

-LLD 15

<LLD 30

<LLD 15

<LLD 18

<LLD 60

<LLD NA NA NA NA NA NA NA NA 0

0 0

0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY: MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

M EAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS GROUND WATER LA-140 15

<LLD NA 0

(PCI/LITER)

FISH (PCI/KG WET)

GAMMA MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 CS-134 8

130

<LLD 130

<LLD 260

<LLD 130

<LLD 260

<LLD NA

<LLD 130

<LLD

<LLD 0

0 0

0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY: MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS FISH CS-137 150

<LLD

<LLD 0

(PCI/KG WET)

BA-140 LA-140 GAMMA MN-54 NA

<LLD NA

<LLD

<LLD 0

SEDIMENT (PCI/KG DRY) 2 CO-58 FE-59 CO-60 ZN-65 NB-95 NA

<LLD NA

<LLD NA NA NA NA NA NA 0

0 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY: MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS SEDIMENT ZR-95 NA

<LLD NA 0

(PCI/KG DRY)

CS-134 CS-137 BA-140 LA-140 150

<LLD 180 65 (1/2)

NA

<LLD NA

<LLD 10 20 (674/675)

(6/59)

NA

<LLD NA

<LLD NA NA NA NA 65 (1/2)

D-27 INDICATOR DRESDEN LOCK AND DAM - DOWNSTREAM 0.8 MILES NW OF SITE 0

0 0

AIR PARTICULATE (E-3 PCI/CU.METER)

GR-B 727 20 (52/52)

(9/51) 22 (52/52)

(11/59)

D-55 INDICATOR RIDGE ROAD 4.3 MILES N OF SITE GAMMA MN-54 CO-58 FE-59 56

<LLD

<LLD 0

0 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY: MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS AIR PARTICULATE CO-60 NA

<LLD

<LLD 0

(E-3 PCIICU.METER)

--I ZN-65 NB-95 ZR-95 CS-134 CS-137 BA-140 LA-140 GAMMA 1-131 NA

<LLD NA

<LLD 50

-.LLD 60

<LLD NA

<LLD

<LLD 0

0 0

AIR IODINE (E-3 PCI/CU.METER) 727 70

<LLD

<LLD 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY: MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (NI)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS N4ILK 1-131 19 1

NA

<LLD 0

(PCI/LITER)

GAMMA MN-54 CO-58 19 00 FE-59 CO-60 ZN-65 NB-95 ZR-95 CS-134 NA NA NA NA NA NA NA NA NA NA NA NA NA NA 15 NA

<LLD

<LLD 0

0 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY:

MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION 9 NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS MILK CS-137 18 NA

<LLD 0

(PCI/LITER)

LA-140 15 NA

<LLD 0

VEGETATION (PCI/KG WET)

GAMMA MN-54 10 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 NA

<LLD NA

<LLD

<LLD 0

0 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR DRESDEN NUCLEAR POWER STATION, 2012 NAME OF FACILITY:

DRESDEN DOCKET NUMBER:

50-010 50-237 & 50-249 LOCATION OF FACILITY:

MORRIS IL REPORTING PERIOD:

ANNUAL 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS VEGETATION 1-131 60

<LLD

<LLD 0

(PCI/KG WET) 0 CS-134 CS-137 BA-140 LA-140 60

<LLD 80

<LLD NA

<LLD NA 24.5 (356/356)

(15/34.3)

<LLD

<LLD 0

0 DIRECT RADIATION (MREM/QTR.)

OSLD-QUARTERLY 364 22 (8/8)

(16/26.8) 29.3 (4/4)

(21/33.7)

D-1 10-3 INDICATOR 0.9 MILES SSW

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAS AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

APPENDIX B LOCATION DESIGNATION, SAMPLE COLLECTION DISTANCE & DIRECTION, AND

& ANALYTICAL METHODS

Intentionally left blank

TABLE B-1:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Dresden Nuclear Power Station, 2012 Location Location Description Distance & Direction From Site A.

Surface Water D-21 D-52 D-57 Illinois River at EJ&E Bridge (indicator)

DesPlaines River at Will Road, Upstream (control)

Kankakee River at Will Road (control)

B.

Ground/Well Water D-23 D-35 Thorsen Well, Dresden Road (indicator)

Dresden Lock and Dam (indicator)

C.

Milk - bi-weeklv / monthly D-25 Biros Farm (control)

D.

Air Particulates / Air Iodine D-01 D-02 D-03 D-04 D-07 D-08 D-10 D-12 D-14 D-45 D-53 D-55 D-56 D-58 Onsite Station 1 (indicator)

Onsite Station 2 (indicator)

Onsite Station 3 (indicator)

Collins Road, on Station property(indicator)

Clay Products, Dresden Road (indicator)

Jugtown Road, Prairie Parks (indicator)

Goose Lake Road, Goose Lake Village (indicator)

Quarry Road, Lisbon (control)

Center Street, Channahon (indicator)

McKinley Woods Road, Channahon (indicator)

Will Road at Hollyhock (indicator)

Ridge Road, Minooka (indicator)

Will Road, Wildfeather (indicator)

Will Road, Marina (indicator)

Dresden Pool of Illinois River, Downstream (indicator)

DesPlaines River, Upstream (control) 1.4 miles WNW 1.1 miles ESE 2.0 miles SE 0.7 miles S 0.8 miles NW 11.4 miles SW 0.8 miles NW 0.3 miles NNE 0.4 miles S 0.8 miles W 2.6 miles S 3.8 miles SW 3.5 miles SSW 10.5 miles NW 3.7 miles NE 1.7 miles ENE 2.1 miles SSE 4.3 miles N 1.7 miles SE 1.1 miles ESE 0.9 miles NNW 1.2 miles ESE 0.8 miles NW 2.8 miles NE 3.2 miles SSE 3.9 miles SSW 1.6 miles NNW 12.8 miles ENE E.

Fish D-28 D-46 F.

Sediment D-27 Illinois River at Dresden Lock and Dam, Downstream (indicator)

G.

Vegetation Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4 Control Chris Locknar Robert Pagliano Jim Bloom J.D. Carmichael Glasscock Farm B-1

TABLE B-i:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Dresden Nuclear Power Station, 2012 Location Location Description Distance & Direction From Site H.

Environmental Dosimetry - OSLD Inner Ring D-58-1 and -2 D-101-1 and -2 D-102-1 and -2 D-103-1 and -2 D-104-1 and -2 D-105-1 and -2 D-106-1 and -2 D-107-1 and -2 D-108-1 and -2 D-109-1 and -2 D-1 10-3 and -4 D-111-1 and -2 D-112A-1 and-2 D-113-1 and-2 D-114-1 and -2 D-115-1 and -2 D-116-1 and -2 Outer Ring D-201-1 and -2 D-202-1 and -2 D-203-1 and -2 D-204-1 and -2 D-205-1 and -2 D-206-1 and -2 D-207-1 and -2 D-208-1 and -2 D-209-1 and -2 D-210-1 and -2 D-211-1 and -2 D-212-3 and -4 D-213-1 and -2 D-214-1 and -2 D-215-1 and -2 D-216-1 and -2 Other Locations D-01-1 and -2 D-02-1 and -2 D-03-1 and -2 D-04-1 and -2 D-07-1 and -2 D-08-1 and -2 D-10-1 and -2 D-14-1 and -2 D-45-1 and -2 D-53-1 and -2 D-55-1 and -2 D-56-1 and -2 D-58-1 and -2 1.1 miles ESE 1.0 miles N 1.3 miles NNE 1.2 miles NE 1.7 miles ENE 1.5 miles E 1.1 miles ESE 1.4 miles SE 1.9 miles SSE 0.8 miles S 0.9 miles SSW 0.6 miles SW 0.7 miles WSW 0.9 miles W 0.9 miles WNW 0.8 miles NW 1.0 miles NNW 4.8 miles N 5.1 miles NNE 4.7 miles NE 5.0 miles ENE 4.0 miles E 3.5 miles ESE 4.2 miles SE 4.9 miles SSE 4.1 miles S 4.9 miles SSW 4.8 miles SW 6.0 miles WSW 4.5 miles W 5.0 miles WNW 4.8 miles NW 4.9 miles NNW 0.8 miles NW 0.3 miles NNE 0.4 miles S 0.8 miles W 2.6 miles S 3.8 miles SW 3.5 miles SSW 3.7 miles NE 1.7 miles ENE 2.1 miles SSE 4.3 miles N 1.7 miles SE 1.1 miles ESE 10.5 miles NW Onsite 1 Onsite 2 Onsite 3 Collins Road, on Station property Clay Products, Dresden Road Jugtown Road, Prairie Parks Goose Lake Road, Goose Lake Village Center Street, Channahon McKinley Woods Road, Channahon Will Road at Hollyhock Ridge Road, Minooka Will Road, Wildfeather Will Road, Marina Control D-12-1 and -2 Lisbon B-2

TABLE B-2:

Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Dresden Nuclear Power Station, 2012 Sample Analysis Sampling Method Collection Procedure Number Sample Size Analytical Procedure Number Medium Surface Water Gamma Spectroscopy Monthly composite EIML-SPM-1, Environmental Incorporated 2 gallon TBE, TBE-2007 Gamma emitting sample or monthly Midwest Laboratory Sampling Procedures radioisotope analysis composite from weekly Manual grab samples.

TBE, TBE-2023 Compositing of samples EIML-COMP-01 procedure for compositing water and milk samples Surface Water Gross Beta Monthly composite EIML-SPM-1, Environmental Incorporated 2 gallon TBE, TBE-2008 Gross Alpha and/or sample or monthly Midwest Laboratory Sampling Procedures gross beta activity in various matrices composite from weekly Manual grab samples.

TBE, TBE-2023 Compositing of samples EIML-COMP-01 procedure for compositing water and milk samples Surface Water Tritium Quarterly composite of EIML-SPM-1, Environmental Incorporated 500 ml TBE, TBE-2011 Tritium analysis in monthly composite Midwest Laboratory Sampling Procedures drinking water by liquid scintillation samples.

Manual TBE, TBE-2023 Compositing of samples EIML-COMP-01 procedure for compositing water and milk samples Ground Water Gamma Spectroscopy Quarterly grab samples.

EIML-SPM-1, Environmental Incorporated 2 gallon TBE, TBE-2007 Gamma emitting Midwest Laboratory Sampling Procedures radioisotope analysis Manual Ground Water Tritium Quarterly grab samples.

EIML-SPM-1, Environmental Incorporated 500 ml TBE, TBE-2011 Tritium analysis in Midwest Laboratory Sampling Procedures drinking water by liquid scintillation Manual Fish Gamma Spectroscopy Samples collected twice EIML-SPM-1, Environmental Incorporated 1000 grams (wet)

TBE, TBE-2007 Gamma emitting annually via Midwest Laboratory Sampling Procedures radioisotope analysis electroshocking or other Manual techniques Sediment Gamma Spectroscopy Semi-annual grab EIML-SPM-1, Environmental Incorporated 500 grams (dry)

TBE, TBE-2007 Gamma emitting samples Midwest Laboratory Sampling Procedures radioisotope analysis Manual

TABLE B-2:

Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Dresden Nuclear Power Station, 2012 Sample Analysis Sampling Method Collection Procedure Number Sample Size Analytical Procedure Number Medium Dredging Spoils Gamma Spectroscopy Annual grab samples if EIML-SPM-1, Environmental Incorporated 500 grams (dry)

TBE, TBE-2007 Gamma emitting dredging occurred Midwest Laboratory Sampling Procedures radioisotope analysis within 1 mile of Dresden Manual Station during the year.

Air Particulates Gross Beta One-week of continuous EIML-SPM-1, Environmental Incorporated 1 filter (approximately TBE, TBE-2008 Gross Alpha and/or air sampling through Midwest Laboratory Sampling Procedures 280 cubic meters gross beta activity in various matrices glass fiber filter paper Manual weekly)

Air Particulates Gamma Spectroscopy Quarterly composite of TBE, TBE-2023 Compositing of samples 13 filters TBE, TBE-2007 Gamma emitting each station radioisotope analysis Env. Inc., AP-03 Procedure for compositing air particulate filters for gamma spectroscopic analysis Air Iodine Gamma Spectroscopy One-or two-week EIML-SPM-1, Environmental Incorporated 1 filter (approximately TBE, TBE-2007 Gamma emitting composite of continuous Midwest Laboratory Sampling Procedures 280 cubic meters radioisotope analysis air sampling through Manual weekly) charcoal filter Milk 1-131 Bi-weekly grab sample EIML-SPM-1, Environmental Incorporated 2 gallon TBE, TBE-2012 Radioiodine in various May through October.

Midwest Laboratory Sampling Procedures matrices Monthly all other times Manual Milk Gamma Spectroscopy Bi-weekly grab sample EIML-SPM-1, Environmental Incorporated 2 gallon TBE, TBE-2007 Gamma emitting May through October.

Midwest Laboratory Sampling Procedures radioisotope analysis Monthly all other times Manual Food Products Gamma Spectroscopy Annual grab samples.

EIML-SPM-1, Environmental Incorporated 1000 grams TBE, TBE-2007 Gamma emitting Midwest Laboratory Sampling Procedures radioisotope analysis Manual OSLD Optically Stimulated Quarterly OSLDs EIML-SPM-1, Environmental Incorporated 2 dosimeters at each Landauer Incorporated, Procedure Luminescence comprised of two Midwest Laboratory Sampling Procedures location numbers L294H and L320A Dosimetry A120 3:C Landauer Manual I Incorporated elements.

[

II

1*1.1 104-2 1144I 1' 114.2 145.1 1054 11s.U 111341 1112*2 Drinedwi Nectar Power sttion 042 GOMM "xmf oI Now 103.2 a

I

-FI DMU NAWU JAL ORES= WAM OM ff1~1 za3

!1 TLD Sediment WATM SAWM LOCTWMN Figure B-1 Dresden Station Inner Ring OSLD Locations, Fish, Water, and Sediment Location, 2012 B-5

12 a'.,

a'.:

216.

N

25 o

5 0

10O KOM"M D@

VIM~U MNUAL DSITA1MNIsI 2t & 3 FMAP RAMPLWUANDTWM MTUM JU M4=U==WAWV MJ CI~AN Air SWOVT LOU2Ifl M

maU~NA n*

1W lAMow Figure B-2 Dresden Station Fixed Air Sampling and OSLD Sites, Outer Ring OSLD Locations and Milk Location, 2012 B-6

APPENDIX C DATA TABLES AND FIGURES PRIMARY LABORATORY

Intentionally left blank

Table C-I.1 CONCENTRATIONS OF GROSS BETA IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD 01106112

- 01/27/12 02/03/12 - 02/24/12 03/02/12 - 03/30/12 04/06/12 - 04/27/12 05/04/12 - 05/25/12 05/25/12 - 06/29/12 06/29/12 - 07/27/12 08/03/12 - 08/31/12 09/07/12 - 09/28/12 10/05/12 - 10/26/12 11/02/12 - 11/30/12 12/07/12 - 12/28/12 D-21 INDICATOR 7.8 t 1.7 8.7 t 2.2 6.3 t 1.7 10.7 t 2.1 2.6 t 0.9 10.4 +/- 1.7 6.2 +/- 1.5 5.7 t 1.7 11.1 +/- 1.9 9.6 +/- 1.8 10.5 +/- 1.8 5.9 +/- 1.9 8.0 +/- 5.3 D-52 D-57 CONTROL CONTROL 9.0 8.4 9.2 12.8 8.7 7.1 8.6 7.3 10.9 8.0 12.2 8.0

+/- 1.8

+/- 2.4

+/- 1.9

+/- 2.3

+/- 1.7

+/- 1.5

+/- 1.7

+/- 1.8

+/- 1.7

+/- 1.9

+/- 1.9 11.6 _

6.1 +/-

4.4 +

4.9 +

5.6 +

4.1 +

5.7 +/-

5.2 +

5.7 +/-

5.9 +

5.1 _

4.5 +

1.8 2.0 1.5 1.8 1.5 1.3 1.5 1.7 1.6 1.6 1.5 1.8 MEAN 9.2 + 3.7 5.7 + 3.9 Table C-1.2 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD 01/06/12 - 03/30/12 04/06/12 - 06/29/12 07/06/12 - 09/28/12 10/05/12 - 12/28/12 D-21 INDICATOR 295 +/- 119 362 +/- 134 358 +/- 111 749 +/- 148 441 +/- 415 D-52 CONTROL

< 170

< 182

< 160

< 183 D-57 CONTROL 485 +/- 130 154 +/- 101 1440 +/- 195

< 180 MEAN 693 +/- 1336 C-1

Table C-I.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 PERIOD D-21 INDICATOR 12/30/11

- 01/27/12

< 6 01/27/12

- 02/24/12

< 3 02/24/12

- 03/30/12

< 5 03/30112

- 04/27/12

< 2 04/27/12

- 05/25/12

< 6 05/25/12

- 06/29/12

< 4 06/29/12

- 07/27/12

< 5 07/27/12

- 08/31/12

< 3 08/31/12

- 09/28/12

< 4 09/28/12 - 10/26/12

< 2 10/26/12 - 11/30/12

< 4 11/30/12 - 12/28/12

< 4 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140

<6

<3

<6

<2

<4

<3

<5

<3

<4

<2

<4

< 12

<7

<9

<4

< 11

<12

<7

<9

<4

<8

<11

<5

<3

<5

<2

<7

<5

<3

<4

<2

<4

<5

< 10

<6

< 12

<3

<9

<8

<11

<6

<9

<4

<9

<12

<6

<4

<5

<2

<6

<5

<3

<5

<2

<5

<6

< 10

<6

<11

<3

< 10

<8

<9

<6

<8

<3

<7

<8

<13

<9

<10

<5

13

12

14

<8

<14

<4

<10

13

<6

<3

<5

<2

<6

<4

<5

<3

<4

<2

<4

<6

<3

<6

<2

<4

<6

<3

<4

<2

<4

< 32

<18

23

<12

38

27

30

<17

< 34

<11

24

< 33

<6

<3

<13

<9

< 10

<5

<12

<4

<9

< 12 k)

MEAN D-52 CONTROL 01/06/12 - 01/27/12 02/03/12 - 02/24/12 03/02/12 - 03/30/12 04/06/12 - 04/27/12 05/04/12 - 05/25/12 06/29/12 - 06/29/12 07/06/12 - 07/27/12 08/03/12 - 08/31/12 09/07/12 - 09/28/12 10/05/12 - 10/26/12 11/02/12 - 11/30/12 12/07/12 - 12/28/12

<5

<3

<5

<2

<4

<3

<4

<5

<4

<2

<3

<5

<2

<4

<2

<4

<6

<5

<4

<2

<3

<5

<10

<5

<9

<4

<9

<7

10

13

< 10

<4

<8

<9

<6

<2

<4

<2

<5

<3

<5

<4

<2

<3

<5

<9

<5

<8

<3

<9

<6

< 10

<11

<8

<3

<9

<6

<3

<4

<2

<4

<3

<4

<5

<2

<4

<5

<8

<5

<7

<3

<9

<6

<8

<9

<7

<3

<7

<9

<8

<7

<8

<4

<13

<9

12

<13

<14

<4

<10

<15

<5

<2

<4

<2

<4

<3

<4

<6

<4

<2

<4

<5

<3

<4

<2

<4

<5

<4

<2

<4

<5

< 20

17

20

< 10

27

22

27

29

< 33

10

19

32

<6

<4

<5

<3

<6

<11

<3

<7

<8 MEAN

Table C-I.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 PERIOD Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 D-57 CONTROL 12/30/11

- 01/27/12 01/27/12 - 02/24/12 02/24/12 - 03/30/12 03/30/12 - 04/27/12 04/27/12 - 05/25/12 05/25/12 - 06/29/12 06/29/12 - 07/27/12 07/27/12 - 08/31/12 08/31/12 - 09/28/12 09/28/12 - 10/26/12 10/26/12 - 11/30/12 11/30/12 - 12/28/12

<5

<3

<6

<2

<5

<6

<5

<2

<4

<5

<6

<4

<7

<2

<4

<5

<4

<6

<5

<2

<4

<5

<9

<12

<4

<9

< 10

<11

13

10

<4

<9

< 10

<5

<4

<6

<2

<5

<4

<6

<4

<2

<3

<5

<8

<7

< 12

<3

<9

<11

10

<13

<9

<4

<8

<9

<6

<4

<6

<2

<4

<5

<7

<5

<2

<4

<5

<9

<7

<9

<3

<8

<9

<12

<8

<3

<7

<9

<8

<9

<4

<11

14

<12

<14

<5

<9

< 13

<5

<3

<6

<1

<4

<6

<4

<2

<4

<5

<3

<6

<2

<6

<5

<4

<6

<5

<2

<4

<5

25

21

< 29

<9

28

< 29

28

< 35

<12

19

31

<4

<7

<9

<3

<8

<9

< 12

< 10

<4

<6

<9 C-)

MEAN

Table C-I1.1 CONCENTRATIONS OF TRITIUM IN GROUND WATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD D-23 D-35 01/13/12 02/10/12 03/09/12 04/13/12 05/11/12 06/08/12 07/13/12 08/10/12 09/14/12 10/12/12 11/09/12 12/14/12 01/13/12 02/10/12 03/09/12 04/13/12 05/11/12 06/08/12 07/13/12 08/10/12 09/14/12 10/12/12 11/09/12 12/14/12 261 292 311 308 258 393 444 336 386 284 294 357

+/- 125

+/- 122

+/- 124

+/- 127

+/- 126

+/- 119

+/- 125

+/- 127

+/- 134

+/- 114

+/- 120

+/- 123

< 186

< 180

< 160

< 156 MEAN 327 +/- 115 C-4

Tables C-II.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUND WATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION PERIOD D-23 01/13/12 - 01/13/12 02/10/12 - 02/10/12 03/09/12 - 03/09/12 04/13/12 - 04/13/12 05/11/12 - 05/11/12 06/08/12 - 06/08/12 07/13/12 - 07/13/12 08/10/12 - 08/10/12 09/14/12 - 09/14/12 10/12/12

- 10/12/12 11/09/12

- 11/09/12 12/14/12

- 12/14/12 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 5

4 4

3 5

4 4

3 5

2 4

2

<4

<3

<5

<3

<5

<3

<5

<2

<3

<2

<5

<4

<5

<2

< 12

<8

<7

< 10

<9

<6

<13

<4

<7

<5

<11

< 10

<4

<8

<4

<3

<5

<4

<6

<2

<3

<2

<6

<4

<5

<1

<10

<7

<6

<10

<8

<11

<7

<10

<4

<7

<5

<9

<8

<3

<4

<3

<5

<4

<5

<4

<5

<2

<4

<3

<5

<4

<2

<9

<7

<6

< 10

<6

<9

<6

<9

<4

<6

<4

<9

<8

<3

13

10

<7

<8

<13

12

<11

<5

< 14

<5

<9

<7

12

10

12

<4

<3

<5

<3

<4

<3

<5

<2

<3

<2

<5

<4

<2

<6

<4

<3

<6

<3

<5

<3

<7

<2

<3

<2

<5

<4

<5

<2

< 33

< 26

18

< 18

31

22

26

<15

36

<12

<18

< 16

27

20

30

<10

< 10

<7

<5

<6

<11

<6

< 10

<6

<9

<4

<7

<5

<11

<7

<9

<3 MEAN D-35 01/13/12 04/13/12 07/13/12 10/12/12

- 01/13/12

- 04/13/12

- 07/13/12

- 10/12/12 4

4 5

2 MEAN

Table C-1I1.1 CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION Mn-54 PERIOD Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 D-28 INDICATOR Freshwater Drum Largemouth Bass Common Carp Largemouth Bass 05/10/12 05/10/12 10/01/12 10/01/12

< 45

< 60

< 49

< 68 47 57 66 63 120 125 143 181

< 48

< 54

< 43

71 105 111 108 142 57 64 53 73 86 110 105 127 51 56 53 42 46 53 56 64

< 271

< 424

< 558

< 685 96 98 185 146 MEAN D-46 CONTROL Channel Catfish Largemouth Bass Common Carp Largemouth Bass 05/10/12 05/10/12 10/01/12 10/01/12

< 44

< 62

83

< 53 50 48 96 74 108 105 201 153

< 43

< 66

< 87

< 57 103 122 144 111 56 64 107 71 88 106 169 120 42 49 76 58 57 57 84 50

< 338

< 470

< 956

591 96 184 239 96 MEAN

Table C-IV.1 CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PC/KG DRY +/- 2 SIGMA SITE COLLECTION Mn-54 PERIOD D-27 05/11/12

< 58 10/05/12

< 61 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140

< 57

< 120

< 69

< 120

< 63

< 106

< 55

< 62

< 162

< 57

< 136

< 72

< 110

< 54

< 67

< 344

< 110

< 192 65 +/- 44

< 494 MEAN

Table C-V.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA COLLECTION PERIOD 121ý30/11 01106/12 01106/12

- 01/13/12 01/13/12

- 01/20/12 01/20/12

- 01/27/12 01/27/12

- 02/03/12 02/03/12

- 02/10/12 02/10/12

- 02/17/12 02/17/12

- 02/24/12 02/24/12

- 03/02/12 03/02/12

- 03/09/12 03/09/12

- 03/16/12 03/16/12

- 03/23/12 03/23/12

- 03/30/12 03/30/12

- 04/06/12 04/06/12

-04/13/12 04/13/12

- 04/20/12 04/20/12

- 04/27/12 04/27/12

- 05/04/12 05/04/12 05/1 1/12 05/11/12

- 05/18/12 05/18/12

- 05/25/12 05/25/12

- 06/01/12 06/01/12

- 06/08/12 06(08/12

- 06/15/12 06/15/12

- 06/22/12 06/22/12

- 06/29/12 06/29/12

- 07/06/12 07/06/12

- 07/13/12 07/13/12

- 07/20/12 07/20/12

- 07/27/12 07/27/12

- 08/03/12 08/03/12

- 08/10/12 08/10/12

- 08/17/12 08/17/12

- 08/24/12 08/24/12

- 08/31/12 08/31/12

- 09/07/12 09/07/12

- 09/14/12 09/14/12

- 09/21/12 09/21/12

- 09/28/12 09/28/12

- 10/05/12 10/05/12

- 10/12/12 10/12/12

- 10/19/12 10/19/12

- 10/26/12 10/26/12

- 11/02/12 11/02/12

- 11/09/12 11/09/12

- 11/16/12 11/16/12

- 11/23/12 11/23/12

- 11/30/12 11/30/12

- 12/07/12 12/07/12

- 12/14/12 12/14/12

- 12/21/12 12/21/12

- 12/28/12 ONSITE LOCATION NEAR FIELD LOCATION D-01 I1+/- 5 17 +/- 4 20 +/- 5 26 +/- 5 16 +/- 4 18 +/- 5 15 +/- 4 15 +/-4 18 +/-4 17 +/-4 8+/-4 14 +/-4 13 +/-4 12 +/-4 12 +/-4 18 +/-4 10 +/-4 15 +/-4 8+/-4 14 +/-4 17 +/-4 12 +/-4 11 +/-4 14 +/-4 16 +/-4 19 +/-4 28 +/-5 22 5

19 +/-4 19 +/-5 20 +/-5 22 +/-5 22 +/-5 17 +/-4 36 +/-5 20 +/-5 18 +/-4 23 +/-5 16 +/-4 23 +/-5 17 +/-4 24 +/-5 20 +/-5 10 +/-4 16 +/- 5 22 +/- 5 45 +/- 6 28 +/- 5 24 +/- 5 15 +/- 4 33 t 5 24 + 5 D-02 186t4 20 +/- 4 25 +/- 5 28 +/- 5 15 +/- 4 25 +/- 5 11 +/-4 16 +/-4 23 +/-5 21 +/-5 11 +/-4 13 +/-4 10 +/-4 10 +/-4 13 +/-4 18 +/-4 10 +/-4 17 +/-4 8+/-4 11 +/-4 23 5

10 +/-4 14 +/-4 15 +/-4 18 +/-4 22 +/-5 32 +/-5 17 +/-4 21

+/-5 17 +/-4 21 +/-5 23 +/-5 21 +/-4 22 +/-5 36 +/-5 19 +/-5 20 t 4 22 +/- 4 18 +/- 4 25 +/- 5 17 +/- 4 25 +/- 5 21 +/- 5 13 +/- 4 16 +/- 5 21 +/- 5 48 +/-6 18 +/-5 24 +/-5 20 5

34 +/-5 26 + 5 D-03 11+/-4 20 +/-4 12 +/-4 21 +/-10 17 +/-4 26 +/-8 19 +/-4 14 +/-4 19 +/-4 16 +/-4 9+/-4 18 +/-4 16 +/-4 8+/-4 15 +/-4 18 +/-4 9+/-4 22 +/-5 14 +/-4 16 +/-4 19 +/-5 9+/-4 15 +/-4 16 +/-4 18 +/- 4 18 +/- 4 25 +/- 5 15 +/- 4 21 +/- 5 25 +/- 5 20 +/- 5 22 +/- 5 23 +/- 5 21 +/- 4 33 +/-5 21 +/-5 19 +/-4 25 +/-5 21 +/-4 22 +/-5 14 +/-4 28 +/-5 20 +/-5 15 +/-4 16 5

21 +/-5 53 +/-6 26 +/-5 27 +/-5 23 +/-5 32 5

25 +/-5 D-04 20+/- 5 22 +/- 5 23 +/- 5 23 +/-5 18 +/-4 22 +/-5 15 +/-4 14 +/-4 21 +/-4 14 +/-4 15 +/-4 16 +/-4 11 +/-4 10 +/-4 16 +/-5 20 +/-4 11 +/-4 24 +/-5 11 +/-4 14 +/-4 20 +/-5 11 +/-5 12 +/-4 16 +/-4 9+/-4 19 +/-4 28 +/-5 17 +/-4 20 +/-5 21 +/-5 24 +/-5 19 +/-5 20 +/-4 23 +/-5 33 +/-5 16 +/-4 21 +/-5 22 +/-5 21 +/-4 23 +/-5 16 +/-4 28 +/-5 19 +/-5 16 +/- 4 16 +/- 5 23 +/- 5 49 +/- 6 27 +/- 5 33 +/- 5 24 +/- 5 39 +/- 6 24 +/- 5 D-07 19+/-5 16 +/-4 23 +/-5 30 +/-5 18 +/-4 15 +/-5 21

+/-6 18 +/-4 20 +/-4 20 +/-4 16 +/-4 17 +/-4 14 +/-4 8+/-4 15 +/-5 21 +/-4 6+/-4 20 +/-5 8+/-4 16 +/-4 23 5

14 +/-4 12 +/-4 14 +/-4 14 +/-4 18 +/-4 26 +/-5 18 +/-4 23 +/-5 20 +/-5 19 +/-4 19 +/-5 20 +/-4 20 +/-4 37 +/-5 19 +/-5 21

+/-5 21

+/-5 22 +/-4 23 +/-5 18 +/-4 28 +/-5 15 5

14 +/-4 15 +/- 5 27 +/- 5 50 +/- 6 28 +/-5 26 +/-5 36 +/-6 39 +/-6 22 +/-5 D-45 1/+/-4 22 5

21 +/-4 26 +/-5 15 +/-4 25 +/-5 15 +/-4 19 +/-4 17 +/-4 18 +/-4 20 +/-5 14 +/-4 12 +/-4 13 +/-4 13 +/-4 19 +/-4 13 +/-5 18 +/-4 10 +/-4 15 +/-4 23 +/- 5 12 +/- 4 16 +/- 4 14 +/- 4 16 +/- 4 18 +/- 4 27 +/- 5 23 +/- 5 19 +/- 4 21 +/- 5 17 +/- 4 19 +/- 5 16 +/-4 19 +/-4 35 +/-5 20 5

19 +/-5 18 +/- 4 19 +/- 4 22 t 5 15 +/- 4 25 +/- 5 24 +/- 5 15 +/- 4 14 +/- 5 22 +/- 5 46 +/- 6 23 +/- 5 28 +/- 5 22 t 5 34 +/-5 23 +/-5 D-53 18+/-4 19 +/-4 22 +/-5 27 +/-5 16 +/-4 20 +/-5 16 +/-4 18 +/-4 19 +/-4 17 +/-4 20 +/-5 15 +/- 4 13 +/- 4 11 +/-4 14 +/-4 16 +/-4 8+/-4 15 +/-4 12 +/-4 12 +/-4 18 +/-4 13 +/-4 12 +/-4 14 +/-4 15 +/- 4 21 +/- 4 27 +/- 5 19 +/- 4 22 +/- 5 20 +/- 5 16 +/- 4 17 +/- 4 20 +/- 4 21 +/- 4 36 +/- 5 20 +/- 5 20 5

21 +/-5 19 +/-4 26 5

14 +/-4 25 +/-5 16 +/-5 12 +/-4 14 +/-5 22 +/-5 48 +/-6 31 +/-5 27 +/-5 19 +/-5 28 5

24 +/-5 D-56 20+/- 5 22 +/- 5 21 +/- 5 28 t 5 18 +/- 4 23 +/- 5 15 +/- 4 18 +/- 4 19 +/- 4 14 +/- 4 17 +/- 4 13 t 4 15 +/- 4 11 t 4 12 +/-4 17 +/-4 9+/-4 18 +/-4 10 +/-4 13 +/-4 20 +/-5 8+/-4 11 +/-4 12 +/-4 19 +/-4 18 +/-4 25 +/-5 16 +/-4 20 +/-5 21 +/-5 16 +/-4 17 +/-4 19 +/-4 21 +/-4 36 +/-5 20 +/-5 21 +/-5 17 +/-4 20 +/-4 28 +/-5 17 +/-4 24 +/-5 17 +/- 5 17 +/- 4 15 +/- 5 25 +/- 5 47 +/- 6 28 +/- 5 28 +/- 5 23 +/- 5 34 +/- 5 24 +/- 5 D-58 21 +/-4 20 +/-5 26 +/-5 19 +/-4 21 +/-5 13 +/-4 18 +/-4 22 +/-5 20 5

14 +/-4 13 +/-4 10 +/-4 9+/-4 15 +/-5 18 +/-4 10 +/-4 19 +/-4 11 +/-4 13 +/-4 18 +/-4 12 +/-4 11 +/-4 10 +/-4 19 +/-4 19 +/-4 30 +/-5 19 +/-4 22 +/-5 24 +/-5 17 +/-4 19 +/-4 18 +/-4 23 +/-5 37 5

16 +/-4 19 +/-5 23 5

18 +/-4 22 +/-5 14 +/-4 27 +/- 5 23 +/- 5 15 +/- 4 15 +/- 5 28 +/- 5 51 +/- 6 28 +/- 5 32 +/- 5 21 +/- 5 35 +/- 5 21 +/- 5 MEAN 19 +/-14 20 +/-14 20 +/-14 20 +/-15 20 +/-15 20 +/-13 19 +/-14 19 +/-14 20 +/-15 C-8

Table C-V.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA COLLECTION PERIOD 12I/3o/11

- u1/10112 01/06/12

- 01/13/12 01/13/12

- 01/20/12 01/20/12

- 01/27/12 01/27/12

- 02/03/12 02/03/12

- 02/10/12 02/10/12

- 02/17/12 02/17/12

- 02/24/12 02/24/12

- 03/02/12 03/02/12

- 03/09/12 03/09/12

- 03/16/12 03/16/12

- 03/23/12 03/23/12

- 03/30/12 03/30/12

- 04/06/12 04/06/12

- 04/13/12 04/13/12

- 04/20/12 04/20/12

- 04/27/12 04/27/12

- 05/04/12 05/04/12

- 05/11/12 05/11/12

- 05/18/12 05/18/12

- 05/25/12 05/25/12

- 06/01/12 06/01/12

- 06108/12 06/08/12

- 06/15/12 06/15/12

- 06/22/12 06/22/12

- 06/29/12 06/29/12

- 07/06/12 07/06/12

- 07/13/12 07/13/12

- 07/20/12 07/20/12

- 07/27/12 07/27/12

- 08/03/12 08/03/12

- 08/10/12 08/10/12

- 08/17/12 08/17/12

- 08/24/12 08/24/12

- 08/31/12 08/31/12

- 09/07/12 09/07/12

- 09/14/12 09/14/12

- 09/21/12 09/21/12

- 09/28/12 09/28/12

- 10/05/12 10/05/12

- 10/12/12 10/12/12 - 10/19/12 10/19/12 - 10/26/12 10/26/12

- 11/02/12 11/02/12 - 11/09/12 11/09/12 - 11/16/12 11/16/12

- 11/23/12 11/23/12

- 11/30/12 11/30/12

- 12/07/12 12/07/12

- 12/14/12 12/14/12

- 12/21/12 12/21/12

- 12/28/12 FAR FIELD LOCATION D-08 20 -+5 25 +/- 5 25 +/- 5 28 +/- 5 18 +/- 4 24 +/- 5 18 +4 18 4

21 +4 16-4 16 _+4 17+/- 4 14 4

10-4 16 5

19 4

10 4

17 4

8+/-4 14 4

16+/- 4 17-5 11 +/-4 12 +/-+4 20 +/- 4 22 +/- 5 32 +/- 5 22 +/- 5 22 +/- 5 23 +/- 5 21 +/- 5 20 +/- 5 22 +/- 5 22 +/- 5 37 +5 17+

4 23 +/-5 23 +/-+5 22 +/-+4 26 +/-+5 17 +4 21 +/-+5 (1)

<5 8+/-3 24-5 40 +/-+6 25 +/-5 27 +5 24 +5 40 +/-+6 23 -+5 D-10 19+/-5 23 +/- 5 25 +/- 5 31 +/- 5 14 +/- 4 21 +/- 5 17 +/- 4 17 +/- 4 19 +/- 4 16 +/- 4 21 +/- 5 14 4

12 4

13+/- 4 13+/- 4 20 +4 9+/-4 20 -+5 8+/-4 17-4 20 +5 11+

4 11 4

16+/- 4 19 +/- 4 23 +/- 5 29 t 5 17 4

23 +/-+4 20 +5 17 t 4 22 +/- 5 23 +/- 5 19 +/- 4 34 +/- 5 20 +/- 5 22 +/- 5 23 +/- 5 21 +/- 4 27 t 5 18+/- 4 31 -+5 16+/- 5 16+/- 4 17 t 5 24 +/- 5 48 +/- 6 27 +/- 5 29 +/- 5 22 +/- 5 41 +/- 6 25 +/- 5 D-14 20 +/--5 25 +/- 5 21 +/- 4 31 +/- 5 16 +/- 4 25 _5 15_ 4 17+/- 4 25 +5 21 -+5 22 +5 15+/- 4 14_ 4 14 4

13-4 19+/- 4 10 +/- 4 20 +/- 5 9-4 17 4

19+/- 4 9+/-4 13+/- 4 14+/- 4 17+/- 4 21 +/-+5 28 +/-5 20 +/-+4 25 +5 23 -+5 23 +5 19+/- 5 24 +/-+5 22 +5 40 +/-+6 19 5

20 +/-+5 22 +/-+5 20 +/- 4 24 +/- 5 19 +/- 4 26 +/- 5 19 5

15+/- 4 17 5

23 +/-+5 48+/- 6 28 5

27+/- 5 21 +5 35 5

23 5

I CONTROL LOCATION D-55 D-12 21 +/-5 15 +/--4 22 +/- 5 24 +/- 5 27 +/- 5 24 +/- 5 28 +/- 5 26 +/- 5 14 +/--4 15 +/-4 25 +/- 5 23 +/- 5 16+/-4 13_+/-4 22_+/-5 16_+/-4 17 +/-4 20 +/--4 14 +/--4 16 +/-_4 16 +/- 4 17 5

15-+/-4 13+/-4 15_+/-4 12+/-4 11 4

9+4 15+/-5 16+/-5 19 4

18 +/--4 13 5

10 +/- 4 17+/-4 20-+/-5 11 +4 10 +/- 4 14+/-4 15-+/-4 22 5

19 +/-4 13 +/-+4 11 +4 12 +/-4 12 4

14 +/--4 13 4

16 +/-4 17 4

20 +/--4 17 4

27 +/- 5 30 5

15 +/--4 18 4

21 +/--5 25+/-5 22 +/- 5 22 5

22 +/- 5 23 5

22 +/- 5 21 5

20 +/- 4 20 4

22 +/- 5 23 5

39 +/- 6 36 5

19 +/--5 25 5

25+/-5 19+/-5 28 +/- 5 25 5

25 +/-5 21 4

30 +/- 5 23 5

19-+/-4 14+/-4 25 +/- 5 23 +/- 5 20 +/--5 16 +/--5 14_+/-4 13-+/-4 20-+/-5 15-+/-5 31 +/--6 23+/-5 59 +/- 7 51 +/- 6 34 +/- 5 30 +/- 5 34 +/- 5 31 +/- 5 25+/-5 13 +/-_4 33 +/- 5 32 +/- 5 24 +/- 5 24 +/- 5 MEAN*

21 +/- 14 21 +/- 15 21 +/- 14 22 +/- 17 20 +/- 15

THE MEAN AND 2 STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-9

Table C-V.2 MONTHLY AND MEAN VALUES OF GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP I - ON-SITE LOCATIONS GROUP II - NEAR-FIELD LOCATIONS GROUP III - FAR-FIELD LOCATIONS GROUP IV - CONTROL LOCATION COLLECTION MIN MAX MEAN +

PERIOD 2SD 12/30/11 02/03/12 02/03/12 03/02/12 03/02/12 03/30/12 03130/12 05/04/12 05/04/12 06/01/12 06/01/12 06/29/12 06/29/12 08/03/12 08/03/12 08/31/12 08/31/12 09/28/12 09/28112 11/02/12 11/02/12 11/30/12 11/30/12 12/28/12 12/30/11

- 12/28/12 12 11 8

8 8

11 15 17 16 10 16 15 28 26 21 22 23 22 32 36 25 28 53 34 19 +/- 9 18 +/- 9 14 +8 14+/- 8 13 + 10 16 +6 21 +9 25 +/- 13 20 +/-5 20 +/- 10 27 + 27 25 +/- 11 12/3 02/0 03/0 03/

05/0 06/0 06/2 08/0 08/3 09/2 11/0 11/3 COLLECTION MIN MAX MEAN +

PERIOD 2SD 30/11 02/03/12 15 30 21 +/- 8 03/12 03/02/12 13 25 19 +/- 6 02/12 03/30/12 10 20 15 +/- 6 30/12 05/04/12 6

24 14 +/- 9 04/12 06/01/12 8

23 14 +/- 9 01/12 06/29/12 9

21 15 +/- 7 29/12 08/03/12 16 30 21 +/- 8 03/12 08/31/12 16 37 23 +/- 15 31/12 09/28/12 16 23 20 +/- 4 28/12 11/02/12 12 28 20 t 10 02/12 11/30/12 14 51 29 +/- 25 30/12 12/28/12 19 39 28 +/- 12 COLLECTION MIN MAX MEAN +

PERIOD 2SD COLLECTION MIN MAX MEAN +

PERIOD 2SD 12/30/11 02/03/12 02/03/12 03/02/12 03/02/12 03/30/12 03/30/12 05/04/12 05/04/12 06/01/12 06101/12 06/29/12 06/29/12 08/03/12 08/03/12 08/31/12 08/31/12 09/28/12 09/28/12 11/02/12 11/02/12 11/30/12 11/30/12 12/28/12 14 15 12 9

8 11 15 19 17 14 8

21 31 23 +/- 10 25 20 +/- 7 22 16 +/-6 20 15 +/-8 22 14+/-9 23 16 +/-8 32 23 +/- 8 40 26 +/- 15 28 22 +/- 5 31 21 +/- 11 59 29 27 41 28 +/-13 12/30/11 02/03/12 02/03/12 03/02/12 03/02/12 03/30/12 03/30/12 05/04/12 05/04/12 06/01/12 06/01/12 06/29/12 06/29/12 08/03/12 08/03/12 08/31/12 08/31/12 09/28/12 09/28/12 11/02/12 11/02/12 11/30/12 11/30/12 12/28/12 15 13 12 9

10 12 18 20 19 13 15 13 26 23 17 20 19 17 30 36 25 23 51 32 21 +/- 11 18 +/- 8 14 5

15 +/- 10 14+/- 8 15+/- 5 24 +/-8 25 +/- 15 22 +/- 6 18 +/- 9 30 +/- 31 25 +/- 17 C-)

0 8

53 19 +/- 14 12/30/11

- 12/28/12 6

51 20 +/- 14 12/30/11

- 12/28/12 8

59 21 +/- 15 12/30/11

- 12/28/12 9

51 20 +/- 15

Table C-V.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA SITE COLLECTION PERIOD D-01 12/30/11

- 03/1 03/30/12 - 06/1 06/29/12 - 09/2 09/28/12

- 12/2 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140

~0/12

~9/12

~8/12

~8/12 MEAN C-D-02 12/30/11 03/30/12 06/29/12 09/28/12 MEAN D-03 12/30/11 03/30/12 06/29/12 09/28/12 MEAN D-04 12/30/11 03/30/12 06/29/12 09/28/12 MEAN D-07 12/30/11 03/30/12 06/29/12 09/28/12 03/30/12 06/29/12 09/28/12 12/28/12 03/30/12 06/29/12 09/28/12 12/28/12 03/30/12 06/29/12 09/28/12 12/28/12 03/30/12 06/29/12 09/28/12 12/28/12

<3

<2

<4

<3

<2

<3

<4

<3

<4

<3

<2

<3

<2

<4

<3

<4

<3

<2

<4

<5

<4

<3

<5

<3

<6

<3

<8

<7

<13

<8

<5

<9

< 11

<9

< 15

<5

< 12

<11

<13

<9

<7

< 10

<9

<7

<2

<4

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<6

<5

<8

<7

<5

<4

<6

<7

<8

<6

<7

<5

<9

<6

<8

<6

<5

<8

<5

<4

<2

<5

<3

<2

<4

<3

<5

<3

<4

<3

<4

<5

<3

<4

<2

<8

<5

<9

<7

<6

<5

<7

<4

<8

<4

<6

<7

<9

<6

<4

<6

<3

<2

<4

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<4

<3

<2

<3

<2

88

51

<154

< 56

< 61

< 53

120

< 47

67

72

130

< 49

< 93

88

164

48

< 49

69

108

38

24

< 23

56

22

26

< 19

< 45

21

22

22

< 53

19

21

36

< 75

14

< 27

< 28

< 30

< 11

<2

<3

<2 MEAN

Table C-V.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA SITE COLLECTION PERIOD D-08 12/30/11

- 03/3 03/30/12 - 06/2 06/29/12 - 09/2 09/28/12 - 12/2 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-1 34 Cs-137 Ba-140 La-140 0/12 9/12

8/12 8/12 MEAN C..)

k)

D-10 12/30/11 03/30/12 06/29/12 09/28/12 MEAN D-12 12/30/11 03/30/12 06/29/12 09/28/12 MEAN D-14 12/30/11 03130/12 06/29/12 09/28/12 MEAN D-45 12/30/11 03/30/12 06/29/12 09/28/12

- 03/30/12

- 06/29/12

- 09/28/12

- 12/28/12

- 03/30/12

- 06/29/12

- 09/28/12

- 12/28/12

- 03/30/12

- 06129/12

- 09/28/12

- 12/28/12

- 03/30/12

- 06/29/12

- 09/28/12

- 12/28/12

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<4

<3

<4

<3

<2

<3

<4

<3

<4

<8

<7

<6

<11

<8

< 11

<8

<7

<11

<8

<9

<8

<6

<9

<8

< 10

<6

< 10

<9

<2

<3

<2

<3

<2

<3

<2

<4

<3

<2

<3

<2

<3

<4

<5

<7

<6

<5

<7

<8

<7

<8

<7

<5

<7

<5

<6

<7

<6

<3

<4

<3

<2

<3

<4

<5

<3

<4

<3

<4

<3

<4

<3

<2

<4

<3

<4

<5

<6

<4

<6

<8

<6

<7

<6

<5

<7

<6

<7

<8

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

< 57

< 69

< 100

< 41

< 53

70

108

< 46

< 66

< 78

120

< 70

< 64

51

< 96

<41

72

68

<104

55

15

31

< 39

13

31

23

40

<18

27

< 33

30

23

31

20

< 41

< 20

< 32

< 17

< 61

< 21 MEAN

Table C-V.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA SITE COLLECTION PERIOD D-53 12/30/11 - 03/30/12 03/30/12 - 06/29/12 06/29/12 - 09/28/12 09/28/12 - 12/28/12 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140

<2

<3

<3 MEAN D-55 12/30/11 - 03/30/12 03/30/12 - 06/29/12 06/29/12 - 09/28/12 09/28/12 - 12/28/12 MEAN D-56 12/30/11

- 03/30/12 03/30/12 - 06/29/12 06/29/12 - 09/28/12 09/28/12 - 12/28/12 MEAN D-58 12/30/11

- 03/30/12 03/30/12 - 06/29/12 06/29/12 - 09/28/12 09/28/12 - 12/28/12

<4

<2

<3

<2

<3

<2

<3

<2

<3

<4

<3

<2

<5

<3

<4

<3

<5

<4

<3

<4

<3

<4

< 10

<6

<8

<9

<6

< 13

<8

<9

< 10

<9

<3

<2

<3

<2

<5

<9

<7

<6

<5

<7

<4

<2

<5

<3

<4

<3

<4

<5

<3

<6

<5

<6

<9

<3

<2

<4

<6

<8

<6

<5

<8

<6

<7

<6

<7

<6

<3

<2

<4

<3

<2

<3

<2

<3

<2

<3

<2

<3

<2

<3

<4

<3

<2

<4

< 64

< 54

< 124

< 51

< 81

< 47

< 172

< 49

< 77

< 79

< 138

< 49

< 53

< 81

110

< 60

< 29

< 18

< 59

< 20

< 12

< 15

< 52

< 18

< 12

< 28

< 51

< 26

< 15

< 34

< 32

<9

<7

<8

<2

<3

<2 MEAN

TABLE C-VI.1 CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA COLLECTION PERIOD ONSITE LOCATION NEAR FIELD LOCATION 01/06/12 01/13/12 01/20/12 01/27/12 02/03/12 02/10/12 02/17/12 02/24/12 03/02/12 03/09/12 03/16/12 03/23/12 03/30/12 12/30/11 04/13/12 04/20/12 04/27/12 05104/12 05/11/12 05/18/12 05/25/12 06/01/12 06/08/12 06/15/12 06/22/12 06/29/12 07/06/12 07/13/12 07/20/12 07/27/12 08/03/12 08/10/12 08/17/12 08/24/12 08/31/12 09/07/12 09/14/12 09/21112 09/28/12 10/05/12 10/12/12 10/19/12 10/26/12 11/02/12 11/09/12 11/16/12 11/23/12 11/30/12 12/07/12 12/14/12 12/21/12 U0/13/12

- 01/13/12

- 01/20/12

- 01/27/12

- 02/03/12

- 02/10/12

-02/17/12

- 02/24/12

- 03/02/12

- 03/09/12

- 03/16/12

- 03/23/12

- 03/30/12

- 04/06/12

- 04/13/12

- 04/20/12

- 04/27/12

- 05/04/12

- 05/11/12

- 05/18/12

- 05/25/12

- 06/01/12

- 06/08/12

- 06/15/12

- 06/22/12

- 06/29/12

- 07106/12

- 07/13/12

- 07/20/12

- 07/27/12

- 08/03/12

- 08110/12

- 08/17/12

- 08/24/12

- 08/31/12

- 09/07/12

- 09/14/12

- 09/21/12

- 09/28/12

- 10/05/12

- 10/12/12

- 10/19/12

- 10/26/12

- 11/02/12

- 11/09/12

- 11/16/12

- 11/23/12

- 11/30/12

- 12/07/12

- 12/14/12

- 12/21/12

- 12/28/12 D-01

41

< 20

< 33

<8

< 44

< 14

< 50

< 12

< 30

< 15

< 21

< 17

<8

< 14

< 25

< 27

< 13

< 22

< 21

< 10

< 33

< 28

< 20

< 23

< 13

< 15

< 21

< 10

< 20

< 10

< 39

< 20

< 32

< 23

< 40

< 17

< 33

< 11

< 12

< 17

< 21

< 22

< 14

< 11

< 18

<8

< 32

< 35

< 59

< 22

< 17

< 35

< 51

< 27

< 30

< 39

< 27

< 39

< 50

< 44

< 20

< 35

< 56

< 61

< 33

< 57

< 51

< 56

< 27

<61

< 68

< 52

< 58

< 33

< 38

< 53

< 25

<8

< 27

< 40

< 51

< 31

< 55

< 38

< 43

< 34

< 27

< 29

< 32

< 41

< 53

< 58

< 37

< 28

< 46

< 22

< 32 D-02 D-02 D-03 D-04

< 36

< 59

< 64

< 21

< 45

< 44 (1)

< 34

< 20

< 50

< 27

< 30

< 13

< 38

< 27

< 39

< 50

< 44

< 43

< 20

< 35

< 56

< 61

< 68

< 33

< 56

< 58

< 55

< 58

< 55

< 27

< 61

< 65

< 68

< 67

< 52

< 60

< 59

< 32

< 33

< 38

< 37

< 53

< 25

< 20

< 27

< 15

<39

< 51

< 31

< 12

< 55

< 59

< 39

< 40

< 43

< 42

< 33

< 27

< 29

< 32

< 43

< 53

< 58

< 57

< 36

< 37

< 28

< 46

< 22

< 32

< 32 D-07

< 25

< 37

< 60

< 22

< 45

< 35

< 65

< 27

< 31

< 38

< 20

< 39

< 51

< 44

< 20

< 35

< 57

< 61

< 33

< 56

< 51

< 57

< 27

< 61

< 68

< 52

< 60

< 33

< 38

< 53

< 26

< 20

< 27

< 40

< 49

< 32

< 59

< 15

< 43

< 50

< 27

< 29

< 32

< 43

< 53

< 58

< 37

< 29

< 46

< 22

< 14 D-45

< 40

< 33

< 24

< 45

< 38

< 28

< 51

< 26

< 25

< 37

< 33

< 32

< 33

< 39

< 40

< 18

< 30

< 39

< 40

< 33

< 14

< 54

< 38

< 27

< 43

< 61

< 42

< 67

< 44

< 41

< 50

< 26

< 29

< 33

< 43

< 28

< 43

< 48

< 52

< 20

< 32

< 27

< 34

< 46

< 53

< 42

< 13

< 50

< 43

< 15

ý39

< 38

< 44

< 42

< 32

< 25

< 36

< 29

< 25

< 30

< 41

< 28

< 55

< 24

< 32

< 13

< 22

< 59

< 35

< 20

< 25

<64

< 23

< 18

< 43

<54

< 42

< 47

<44

< 32

< 29

< 25

< 18

< 22

< 27

< 31

< 19

< 37

< 26

< 33

< 46

< 23

< 24

< 25

< 30

< 40

< 38

< 36

< 31

< 37

< 21

< 28

39

< 38

< 44

< 42

< 32

< 25

< 36

< 30

< 24

< 30

< 41

< 28

< 57

< 26

< 32

< 13

< 22

< 57

< 35

< 21

< 25

< 65

< 38

< 18

< 42

< 56

< 17

< 47

< 44

< 32

< 29

< 25

< 18

< 22

< 27

< 31

< 19

< 37

< 27

< 33

< 46

< 23

< 26

< 30

< 40

< 38

< 36

< 31

< 37

< 41

< 28

< 16

< 38

< 44

< 42

< 32

< 25

< 36

< 29

< 24

< 30

< 41

< 28

< 57

< 26

< 32

< 13

< 22

< 57

< 35

< 21

< 25

< 66

< 38

< 18

< 42

< 56

< 41

< 47

< 18

< 32

< 29

< 25

< 17

< 22

< 27

< 31

< 19

< 37

< 27

< 33

< 46

< 23

< 25

< 30

< 40

< 38

< 35

< 31

< 37

< 41

< 28 D-53 D-56 D-58 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-14

TABLE C-VI.1 CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA COLLECTION PERIOD FAR FIELD LOCATION ICONTROL LOCATION 17i_*U/1 1 01/06/12 01/13/12 01/20/12 01/27/12 02/03/12 02/10/12 02/17/12 02/24/12 03/02/12 03/09/12 03/16/12 03/23/12 03/30/12 12/30/11 04/13/12 04/20/12 04/27/12 05/04/12 05/11/12 05/18/12 05/25/12 06/01/12 06/08/12 06/15/12 06/22/12 06/29/12 07/06/12 07/13/12 07/20/12 07/27/12 08/03/12 08/10/12 08/17/12 08/24/12 08/31/12 09107/12 09/14/12 09/21/12 09/28/12 10/05/12 10/12/12 10/19/12 10/26/12 11/02/12 11/09/12 11/16/12 11/23/12 11/30/12 12/07/12 12/14/12 12/21/12 U 1/Ub/1 01/13/12 01/20/12 01/27/12 02/03/12 02/10/12 02/17/12 02/24/12 03/02/12 03/09/12 03/16/12 03/23/12 03/30/12 04/06/12 04/13/12 04/20/12 04/27/12 05/04/12 05/11/12 05/18/12 05/25/12 06/01/12 06/08/12 06/15/12 06/22/12 06/29/12 07/06/12 07/13/12 07/20/12 07/27/12 08/03/12 08/10/12 08/17/12 08/24/12 08/31/12 09/07/12 09/14/12 09/21/12 09/28/12 10/05/12 10/12/12 10/19/12 10/26/12 11/02/12 11/09/12 11/16/12 11/23/12 11/30/12 12/07/12 12/14/12 12/21/12 12/28/12 D-08

< 4f

14

60

19

16

12

21

<9

13

<15

27

13

14

16

40

<8

30

22

40

14

36

18

< 55

<11

<17

21

< 35

28

36

17

21

<11

<12

< 14

< 18

<12

< 18

< 20

< 22

< 19

<13

< 27

< 14

< 45

< 22

< 44

< 18

< 21

< 28

< 35 D-10

< 47

< 32

< 60

< 45

< 37

< 28

< 51

< 26

< 25

< 37

< 32

< 39

<17

< 18

< 30

< 39

< 40

< 33

< 36

< 54

< 55

< 27

< 43

< 57

< 35

< 66

< 34

< 41

< 50

< 26

< 29

< 33

< 42

< 28

< 43

< 47

< 52

< 50

< 32

<11

< 33

< 45

< 53

< 42

< 21

< 49

< 28

< 35 D-14

< 41

< 33

< 58

< 45

< 38

< 27

< 51

< 26

< 37

< 33

< 32

< 33

< 39

< 40

<18

< 30

< 39

<17

< 33

< 36

< 55

< 57

< 27

< 43

< 61

< 34

< 67

< 36

<41

< 50

< 26

< 29

< 33

< 43

< 28

< 43

< 48

< 52

< 50

< 32

< 27

< 34

< 46

< 53

<18

< 42

< 22

< 50

< 28

< 36 D-55

< 40

< 39

< 44

< 43

32

< 26

36

30

24

31

42

28

< 57

26

< 33

<13

23

58

36

21

25

< 66

38

<17

23

< 55

< 43

< 49

< 44

< 33

< 30

< 26

<18

< 23

28

31

19

< 37

29

< 33

< 47

24

< 24

< 26

30

<41

< 39

36

32

< 37

< 43

28 D-12

< 47

< 32

< 60

< 45

< 38

< 28

< 51

< 26

< 25

< 37

< 34

< 32

< 39

< 40

<18

< 13

< 39

< 40

< 35

< 36

< 54

< 55

< 27

< 43

< 59

< 35

< 66

< 36

< 41

< 50

< 26

< 29

< 33

< 42

< 43

< 28

< 43

< 48

< 52

< 50

< 32

< 27

<34

< 19

< 53

< 42

< 22

< 50

< 28

< 35 ffff!!=

MEAN C-15

Table C-VII.1 CONCENTRATIONS OF 1-131 IN MILK SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA CONTROL FARM D-25 COLLECTION PERIOD 01/05/12 02/02/12 03/01/12 04/05/12 05/03/12 05/17/12 05/31/12 06/14/12 06/26/12 07/13/12 07/26/12 08/09/12 08/23/12 09/06/12 09/20/12 10/04/12 10/18/12 11/01/12 12/07/12

< 0.6

< 0.5

< 0.4

< 0.5

< 0.8

< 0.5

< 0.7

< 0.8

< 0.7

< 0.8

< 0.6

< 0.8

< 0.7

< 0.5 MEAN C-16

Table C-VII.2 CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION PERIOD D-25 01/05/12 02/02/12 03/01/12 04/05/12 05/03/12 05/17/12 05/31/12 06/14/12 06/26/12 07/13/12 07/26/12 08/09/12 08/23/12 09/06/12 09/20/12 10/04/12 10/18/12 11/01/12 12/07/12 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140

<9

<6

<4

<7

<9

<5

<6

<5

<6

<4

<5

<8

<6

<5

<9

<6

<4

<7

<5

<6

<7

<6

<5

<8

<6

<5

<6

<4

< 23

< 14

< 11

< 18

< 13

< 14

< 12

< 17

< 13

< 15

< 10

< 14

< 12

< 17

< 13

< 14

< 13

< 12

<8

<5

<9

<5

<7

<6

<8

<7

<8

<5

<7

<6

<8

<6

<7

<6

< 20

< 12

< 10

< 16

< 17

< 12

< 13

< 12

< 15

< 12

< 14

< 10

< 12

< 11

< 15

< 13

< 12

< 10

< 11

<7

<4

<7

<9

<5

<6

<7

<6

<7

<4

<7

<5

<8

<6

<5

< 16

<9

<8

< 14

< 15

<9

<8

< 12

<8

< 12

<8

< 11

<9

< 14

< 11

< 10

<9

<5

<4

<6

<7

<4

<5

<6

<5

<4

<5

<6

<5

<4

<9

<6

<4

<7

<8

<5

<6

<5

<6

<5

<8

<6

<5

< 43

< 39

< 24

< 44

< 52

< 26

< 31

< 33

< 31

< 36

< 50

< 19

< 38

< 30

< 42

< 36

< 37

< 41

< 29

< 13

< 11

<8

< 13

< 12

<9

< 10

<9

< 10

< 12

< 13

<7

< 12

< 10

< 13

< 11

< 12

<8 MEAN

Table C-VIII.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION Mn-54 PERIOD Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 0.,.

U-CON I RUL Beet greens Potatoes D-QUAD 1 Beets Cabbage D-QUAD 2 Broccoli Radishes D-QUAD 3 Beets Cabbage D-QUAD 4 Cabbage Potatoes 09/15/12

< 15 09/15/12

< 10 MEAN 09/22/12

< 12 09/22/12

< 17

< 13

< 33

< 16

< 28

< 13

< 22

< 31

< 11

< 13

< 79

< 20

< 17

< 36

< 19

< 34

< 18

< 33

< 54

< 14

< 22

< 97

< 34 MEAN 09/22/12

< 18 09/22/12

< 13

< 17

< 41

< 16

<35

< 19

<26

<39

< 14

< 83

< 12

< 11

< 32

< 17

<29

< 15

<21

<26

< 12

< 13

<66

<22

< 18

< 40

< 23

< 44

< 20

< 35

< 49

< 16

< 21

< 116

< 34

< 13

<40

<22

<34

< 16

<23

<33

< 12

< 14

< 83

<20 MEAN 09/22/12

< 13 09/22/12

< 11

< 13

< 34

< 15

< 32

< 14

<24

< 34

< 11

< 15

< 91

< 17

< 12

< 30

< 16

<29

< 14

<24

<30

< 10

< 15

< 88

< 17 MEAN 09/15/12

< 14 09/15/12

< 15

< 13

<29

< 18

< 33

< 15

<21

< 35

< 12

< 13

< 78

< 24

< 13

< 30

< 17

< 33

< 15

<22

< 36

< 12

< 14

< 78

< 23 MEAN

Table C-IX.1 QUARTERLY OSLD RESULTS FOR DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF MREM/QUARTER

2 STANDARD DEVIATIONS STATION CODE D-01-1 D-01-2 D-02-1 D-02-2 D-03-1 D-03-2 D-04-1 D-04-2 D-07-1 D-07-2 D-08-1 D-08-2 D-10-1 D-10-2 D-12-1 D-12-2 D-14-1 D-14-2 D-45-1 D-45-2 D-53-1 D-53-2 D-55-1 D-55-2 D-56-1 D-56-2 D-58-1 D-58-2 D-101-1 D-101-2 D-102-1 D-102-2 D-103-1 D-103-2 D-104-1 D-1 04-2 D-105-1 D-105-2 D-106-1 D-1 06-2 D-107-1 D-107-2 D-108-1 D-108-2 D-109-1 D-1 09-2 D-110-3 D-1 10-4 D-111-1 D-111-2 MEAN

+/-2 S.D.

26.0 +/- 8.6 26.1 +/- 9.8 25.5 +/- 11.5 25.8 +/- 7.0 22.6 +/- 7.3 22.2 +/- 7.7 25.3 +/- 8.0 26.1 +/- 8.8 24.7 +/- 7.9 24.1 +/- 6.8 25.0 +/- 11.4 25.0 +/- 10.4 25.8 +/- 10.1 25.7 +/- 7.6 22.6 +/- 7.8 21.4 +/- 8.6 23.1 +/- 7.7 23.8 +/- 6.7 26.6 +/- 8.5 26.9 +/- 11.7 21.1 +/- 9.3 21.1 +/- 7.7 25.3 +/- 12.0 23.5 +/- 8.1 21.5 +/- 8.1 21.4 +/- 9.0 20.8 +/- 9.3 21.5 +/- 7.7 26.1 +/- 6.4 23.1 +/- 7.0 26.2 +/- 12.8 27.4 +/- 9.1 22.5 +/- 8.6 24.8 +/- 9.4 26.8 +/- 7.2 26.7 +/- 13.1 24.8 +/- 7.2 24.6 +/- 12.4 23.8 +/- 6.0 21.1 +/- 7.6 24.0 +/- 5.5 21.8 +/- 8.6 26.5 +/- 7.9 23.6 +/- 6.5 25.1 +/- 9.5 25.8 +/- 8.3 29.3 +/- 11.4 28.5 +/- 12.0 28.0 +/- 8.6 26.1 +/- 8.9 JAN - MAR APR - JUN JUL-SEP OCT - DEC 20.0 19.0 18.0 22.0 18.0 17.0 21.0 20.0 20.0 20.0 18.0 19.0 19.0 21.0 18.0 16.0 18.0 19.0 22.0 19.0 15.0 17.0 18.0 18.0 17.0 15.0 15.0 17.0 23.0 18.0 18.0 21.0 17.0 20.0 22.0 18.0 20.0 16.0 20.0 16.0 16.0 21.0 19.0 20.0 20.0 21.0 21.0 22.0 20.0 29.1 28.3 30.0 29.9 25.9 24.0 27.5 29.3 27.8 28.3 29.8 27.3 30.5 28.1 24.6 24.4 24.9 26.0 29.6 28.4 23.6 23.4 30.4 26.0 25.2 23.9 23.6 23.7 29.4 25.4 32.9 30.7 26.5 27.8 28.3 33.5 26.4 27.4 25.0 22.0 (1) 25.2 23.7 28.6 26.6 30.8 27.9 32.2 32.2 30.1 27.6 29.1 30.2 30.0 27.2 25.1 25.9 29.7 29.4 28.1 24.4 29.5 30.9 2§.7 29.4 26.8 25.2 27.0 26.2 30.7 33.0 25.6 25.3 30.0 27.0 24.6 25.0 25.3 25.5 25.5 29.0 30.6 25.3 29.8 30.5 29.3 28.4 30.4 27.1 25.2 26.0 26.0 29.9 24.1 26.8 29.5 33.7 34.3 31.8 30.5 25.8 26.8 23.8 24.0 21.2 22.0 23.0 25.8 22.7 23.8 22.6 22.9 25.1 24.4 20.9 19.9 22.5 23.8 24.0 27.1 20.3 18.8 22.8 22.8 19.0 21.5 19.1 19.6 (1) 25.8 23.4 24.8 27.4 21.3 21.7 26.2 25.8 24.5 24.6 23.1 21.0 20.9 21.3 26.4 24.6 22.6 25.8 30.1 26.5 28.1 26.2 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-19

Table C-IX.1 QUARTERLY OSLD RESULTS FOR DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF MREM/QUARTER +/- 2 STANDARD DEVIATIONS STATION CODE MEAN

+ 9 -q JAN - MAR APR - JUN JUL - SEP OCT-DEC D-113-1 D-113-2 D-1 14-1 D-1 14-2 D-115-1 D-115-2 D-1 16-1 D-1 16-2 D-201-1 D-201-2 D-202-1 D-202-2 D-203-1 D-203-2 D-204-1 D-204-2 D-205-1 D-205-2 D-206-1 D-206-2 D-207-1 D-207-2 D-208-1 D-208-2 D-209-1 D-209-2 D-21 0-1 D-210-2 D-211-1 D-211-2 D-212-3 D-212-4 D-213-1 D-213-2 D-214-1 D-214-2 D-215-1 D-215-2 D-216-1 D-216-2 D-1 12A-1 D-1 12A-2 22.2 23.7 22.5 23.1 24.8 26.0 27.2 26.3 28.0 27.9 27.7 25.7 25.6 23.2 23.9 22.6 24.5 24.5 24.3 24.8 23.6 23.1 21.4 20.9 21.1 21.1 24.1 24.4 25.2 25.8 21.6 24.0 21.7 21.4 27.8 28.4 28.8 27.5 23.8 26.2 22.6 24.2

+/- 8.6

+/- 9.2

+/- 9.4

+/- 8.6

+/- 9.4

+/- 7.9

+/- 10.5

+/- 8.2

+/- 10.1

+/- 10.2

+/- 10.0

+/- 10.8

+/- 8.2

+/- 8.6

+/- 9.2

+/- 8.0

+/- 4.4

+/- 5.7

+/- 8.8

8.8

+/- 5.3

+/- 9.5

+6.1

+/- 7.7

+ 6.3

+ 6.6

+/- 7.3

+/- 8.0

+ 7.8

+/- 8.2

+ 6.8

+/-5.1

+/- 8.6

+/- 7.4

+ 10.5

+ 10.6

+ 10.1

+8.1

+/- 10.6

+/- 8.9

+/- 7.8

+/- 8.9 17.0 19.0 17.0 17.0 18.0 21.0 20.0 22.0 21.0 21.0 21.0 18.0 20.0 17.0 18.0 17.0 22.0 23.0 18.0 20.0 20.0 17.0 18.0 17.0 17.0 17.0 19.0 19.0 20.0 20.0 18.0 21.0 17.0 17.0 22.0 21.0 22.0 22.0 17.0 20.0 18.0 18.0 25.4 26.7 27.0 25.1 27.4 26.9 29.3 29.1 32.9 32.9 31.4 28.1 28.2 25.5 26.9 25.2 27.0 28.4 25.9 26.2 23.3 23.7 22.5 23.7 25.5 25.8 26.9 28.5 25.2 25.7 25.8 23.5 31.3 32.7 33.3 29.5 27.1 28.1 24.8 27.3 (1)

(1) 26.0 28.4 25.7 26.9 28.5 30.6 32.4 30.5 29.9 30.2 31.7 30.5 29.1 26.7 28.2 25.8 26.2 27.8 27.6 28.6 25.2 27.5 24.5 24.6 24.4 23.8 27.5 28.5 29.1 28.8 23.7 26.5 24.9 25.3 33.0 31.6 31.8 31.3 28.8 30.4 26.7 27.6 20.2 20.5 20.3 23.5 25.2 25.4 27.2 23.7 28.3 27.5 26.7 26.1 25.0 23.5 22.6 22.4 25.2 22.8 24.6 22.1 23.1 21.7 19.7 18.1 20.4 19.9 24.2 24.3 24.6 25.7 19.5 22.9 19.2 19.8 24.7 28.1 27.9 27.0 22.2 26.2 20.8 23.9 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-20

TABLE C-IX.2 MEAN QUARTERLY OSLD RESULTS FOR THE INNER RING, OUTER RING, OTHER AND CONTROL LOCATIONS FOR DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF MREM/QUARTER +/- 2 STANDARD DEVIATIONS OF THE STATION DATA COLLECTION PERIOD JAN-MAR APR-JUN JUL-SEP OCT-DEC INNER RING

+/- 2 S.D.

19.0 +/- 4.2 27.5 +/- 5.6 28.4 +/- 5.3 23.9 +/- 5.5 OUTER RING OTHER CONTROL 19.3 +/- 3.9 27.4 +/- 6.2 27.9 +/- 5.2 23.6 +/- 5.7 18.8 +/- 3.7 27.4 +/- 4.6 28.0 +/- 4.7 23.2 +/- 4.3 17.0 +/- 2.8 24.5 +/- 0.3 26.0 +/- 2.3 20.4 +/- 1.4 TABLE C-IX.3

SUMMARY

OF THE AMBIENT DOSIMETRY PROGRAM FOR DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF MREM/QUARTER LOCATION SAMPLES PERIOD ANALYZED MINIMUM PERIOD MAXIMUM INNER RING OUTER RING OTHER CONTROL 134 126 96 8

15 34.3 PERIOD MEAN

+/- 2 S.D.

24.7 +/- 9.0 24.5 +/- 8.7 24.3 +/- 8.6 22.0 +/- 7.7 17 15 16 33 33 27 INNER RING LOCATIONS - D-101-1, D-101-2, D-102-1, D-102-2, D-103-1, D-103-2, D-104-1, D-104-2, D-105-1, D-105-2, D-106-1, D-106-2, D-107-1, D-107-2, D-108-1, D-108-2, D-109-1, D-109-2, D-110-3, D-110-4, D-111-1, D-111-2, D-112A-1, D-112A-2, D-113-1, D-113-2, D-114-1, D-114-2, D-115-1, D-115-2, D-116-1, D-116-2, D-58-1, D-58-2 OUTER RING LOCATIONS - D-201-1, D-201-2, D-202-1, D-202-2, D-203-1, D-203-2, D-204-1, D-204-2, D-205-1, D-205-2, D-206-1, D-206-2, D-207-1, D-207-2, D-208-1, D-208-2, D-209-1, D-209-2, D-210-1, D-210-2, D-211-1, D-211-2, D-212-3, D-212-4, D-213-1, D-213-2, D-214-1, D-214-2, D-215-1, D-215-2, D-216-1, D-216-2 OTHER LOCATIONS - D-01-1, D-01-2, D-02-1, D-02-2, D-03-1, D-03-2, D-04-1, D-04-2, D-07-1, D-07-2, D-08-1, D-08-2, D-10-1, D-10-2, D-14-1, D-14-2, D-45-1, D-45-2, D-53-1, D-53-2, D-55-1, D-55-2, D-56-1, D-56-2 CONTROL LOCATION - D-1 2-1, D-1 2-2 C-21

FIGURE C-1 SURFACE WATER - GROSS BETA - STATION D-52 (C) COLLECTED IN THE VICINITY OF DNPS, 2000 - 2012 D-52 (C) DesPlaines River at Will Road 16 14 12 10 8

6 4

2 0

01-28-00 08-29-02 03-30-05 10-30-07 05-31-10 12-30-12 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY 2005 C-22

FIGURE C-2 SURFACE WATER - GROSS BETA - STATION D-54 (C) and D-57 (C)

COLLECTED IN THE VICINITY OF DNPS, 2003 - 2012 D-54 (C) Kankakee River 14 12 10 8

6 4

2

,-I a.

A 0

01-31-03 12-25-03 11-17-04 10-11-05 09-04-06 07-29-07 D-57 (C) Kankakee River at Will Road

-I 32 28 24 20 16 12 8

4 0

07-28-06 08-22-07 09-15-08 10-10-09 11-04-10 11-29-11 12-23-12 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY 2005 D-54 LOCATION REMOVED FROM PROGRAM JUNE 28, 2007 AND REPLACED WITH D-57 C-23

FIGURE C-3 SURFACE WATER - GROSS BETA - STATIONS D-21 and D-51 COLLECTED IN THE VICINITY OF DNPS, 2000 - 2012 D-21 Illinois River at EJ&E Bridge 30 25 20

-J G 15 10 5

0 1-04-27-07 04-07-08 03-19-09 02-28-10 02-09-11 01-21-12 01-01-13 D-51 Dresden Lock & Dam 12 10 8

6

-I a.

~A~3/44AJ~RAW 4.

2 0

01-28-00 08-29-01 03-31-03 10-30-04 06-01-06 01-01-08 D-21 PLACED INTO SERVICE ON MARCH 30, 2007, REPLACED D-51 D-51 LOCATION REMOVED FROM PROGRAM JUNE 29, 2007 AND REPLACED WITH D-21 C-24

FIGURE C-4 SURFACE WATER - TRITIUM - STATION D-52 (C) COLLECTED IN THE VICINITY OF DNPS, 2000 - 2012 D-52 (C) Des Plaines River at Will Road 600 500 400 300 200 100

-J C.)

0k 03-31-00 10-18-02 05-06-05 11-23-07 06-11-10 12-28-12 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY 2005 C-25

FIGURE C-5 SURFACE WATER - TRITIUM - STATION D-54 (C) AND D-57 (C) COLLECTED IN THE VICINITY OF DNPS, 2003 - 2012 D-54 (C) Kankakee River 800 700 600 500 400 0.

300 200 100 0

03-28-03 02-03-04 12-11-04 10-19-05 08-27-06 07-05-07 Location shared with Braidwood Station (BD-10).

D-57 (C) Kankakee River at Will Road 7000 6000 5000 4000 c* 3000 2000 1000 0

12-20-06 12-23-07 12-25-08 12-28-09 12-31-10 01-03-12 01-05-13 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY 2005 D-57 NEW STATION JULY 24, 2006. REPLACED D-54 ON JUNE 28, 2007 C-26

FIGURE C-6 SURFACE WATER - TRITIUM - STATIONS D-21 and D-51 COLLECTED IN THE VICINITY OF DNPS, 2000 - 2012 D-21 Illinois River at EJ&E Bridge 800 700 600 500 400 300 200 1004 06-29-07 05-29-08 04-29-09 03-30-10 02-28-11 01-29-12 12-29-12 D-51 Dresden Lock & Dam

-J 2000 1800 1600 1400 1200 1000 800 600 400 200 0

03-31-00 10-18-01 05-07-03 11-23-04 06-12-06 12-30-07 D-21 REPLACED D-51 JUNE 29, 2007 D-51 LOCATION REMOVED FROM PROGRAM JUNE 29, 2007 AND REPLACED WITH D-21 C-27

FIGURE C-7 GROUND WATER - TRITIUM - STATIONS D-23 and D-35 COLLECTED IN THE VICINITY OF DNPS, 2000 - 2012 D-23 Thorsen Well 1000 800 600 400 200 CL 0 l-01-08-00 08-13-02 03-18-05 10-22-07 05-27-10 12-30-12 D-35 Dresden Lock and Dam

-J eU 400 350 300 250 200 150 100 50 0

01-08 K\\MP&

8-00 08-13-02 03-18-05 10-22-07 05-27-10 12-30-12 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY 2005 C-28

FIGURE C-8 AIR PARTICULATES - GROSS BETA - STATIONS D-01 and D-02 COLLECTED IN THE VICINITY OF DNPS, 2000 - 2012 D-01 Onsite Station I V)E a.

9Lu 0

50.0 40.0 30.0 20.0 10.0 0.0 4-01-08-00 08-14-02 03-20-05 10-25-07 05-31-10 01-04-13 D-02 Onsite Station 2 C.,

9 50.0 40.0 30.0 20.0 10.0 0.0 01-08-00 08-14-02 03-20-05 10-25-07 05-31-10 01-04-13 D-02 No samples: power was restored on 09-16-05.

C-29

FIGURE C-9 AIR PARTICULATES - GROSS BETA - STATIONS D-03 and D-04 COLLECTED IN THE VICINITY OF DNPS, 2000 - 2012 D-03 Onsite Station 3 V.)

E 0.

CL 0,l9 60.0 50.0 40.0 30.0 20.0 10.0 0.0 01-08-00 08-14-02 03-20-05 10-25-07 05-31-10 01-04-13 D-04 Collins Road on Station Property 0

60.0 50.0 40.0 30.0 20.0 10.0 0.0 01-08-00 08-14-02 03-20-05 10-25-07 05-31-10 01-04-13 C-30

FIGURE C-10 AIR PARTICULATES - GROSS BETA - STATIONS D-07 and D-12 (C) COLLECTED IN THE VICINITY OF DNPS, 2000 - 2012 D-07 Clay Products, Dresden Road v')

U C,

wo 120.0 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 01-08-00 08-14-02 03-20-05 10-25-07 05-31-10 01-04-13 D-12 (C), Quarry Road, Lisbon C) 0.

,t,-

0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 01-08-00 08-14-02 03-20-05 10-25-07 05-31-10 01-04-13 C-31

FIGURE C-1I AIR PARTICULATES - GROSS BETA - STATIONS D-45 and D-53 COLLECTED IN THE VICINITY OF DNPS, 2000 - 2012 D-45 McKinley Woods Road, Channahon 70.0 60.0 50.0 Ej340.0 w

30.0 20.0 10.0 00 01-08-00 08-14-02 03-20-05 10-25-07 05-31-10 01-04-13 D-53 Will Road at Hollyhock 50.0 40.0 30.0 C.)

a.

9 20.0 Lu 10.0 0.0 I 01-08-00 08-14-02 03-20-05 10-25-07 05-31-10 01-04-13 C-32

FIGURE C-12 AIR PARTICULATES - GROSS BETA - STATIONS D-08 and D-10 COLLECTED IN THE VICINITY OF DNPS, 2005 - 2012 D-08 Jugtown Road, Prairie Parks 70.0 60.0 50.0 c*E 40.0 a.,

30.0 Lu 20.0 10.0 0.0 I 01-07-05 08-14-06 03-20-08 10-25-09 06-01-11 01-05-13 D-1 0 Goose Lake Road, Goose Lake Village 60.0 50.0 40.0 E

C.

30.0 C.,

c 20.0 10.0 0.0 4-01-07-05 08-14-06 03-20-08 10-25-09 06-01-11 01-05-13 C-33

FIGURE C-13 AIR PARTICULATES - GROSS BETA - STATIONS D-13 and D-14 COLLECTED IN THE VICINITY OF DNPS, 2005 - 2012 D-13 Minooka 50.0 40.0 30.0 a.

C.,

co" 9

20.0 10.

10.0 0.0 01-07-05 07-07-05 01-04-06 07-04-06 01-01-07 07-01-07 D-14 Center Street, Channahon 50.0 40.0 30.0 C.

9 20.0 10.0 0.0 I 01-07-05 01-07-07 01-06-09 01-06-11 01-05-13 D-13 TAKEN OUT OF SERVICE JUNE 29, 2007 AND REPLACED WITH D-55 C-34

FIGURE C-14 AIR PARTICULATES - GROSS BETA - STATIONS D-55 and D-56 COLLECTED IN THE VICINITY OF DNPS, 2006-2012 D-55 Ridge Road, Minooka 70.0 60.0 50.0 40.0 to 30.0 u.I 20.0 10.0 0.0 01-06-06 05-31-07 10-22-08 03-16-10 08-08-11 12-30-12 D-56 Will Road, Wildfeather 50.0 40.0 30.0 ft 9 20.0 10.0 0.0 I

07-25-06 03-03-08 10-11-09 05-21-11 12-28-12 D-55 NEW STATION DECEMBER 30, 2005 REPLACED D-13 JUNE 29, 2007 D-56 NEW STATION JULY 25, 2006 C-35

FIGURE C-15 AIR PARTICULATES - GROSS BETA - STATION D-58 COLLECTED IN THE VICINITY OF DNPS, 2011-2012 D-58 Will Road Marina 600 y 50.0 +

cl 40.0 0L 30.0 9

o 20.0 10.0 4-

-I O0 I I

I 06-03-11 12-12-11 06-21-12 12-30-12 D-58 NEW STATION IN MAY OF 2011 C-36

APPENDIX D INTER-LABORATORY COMPARISON PROGRAM

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TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2012 (PAGE 1 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a)

Value (b) TBE/Analytics Evaluation (d)

March 2012 E10066 E10067 E10069 E10068 Milk Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-1 34 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L 101 94.8 pCi/L 11.7 13.5 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 87.5 247 435 133 156 127 190 179 327 274 167 310 107 109 87.6 133 113 226 185 92.5 260 436 149 159 132 195 168 333 279 164 276 94.5 101 83.5 123 106 210 176 AP Ce-141 Cr-51 Cs-1 34 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 Charcoal 1-131 Water Fe-55 June 2012 E10070 E10198 E10199 E10201 E10200 pCi 92.8 94.2 pCi/L 1800 1570 pCi/L 86.1 99.8 pCi/L 9.2 12.7 1.07 0.87 0,95 0.95 1.00 0.89 0.98 0.96 0.97 1.07 0.98 0.98 1.02 1.12 1.13 1.08 1.05 1.08 1.07 1.08 1.05 0.99 1.15 0.86 0.72 0.89 0.89 0.98 0.91 0.97 0.97 0.98 1.01 0.97 0.96 0.97 1.00 1.04 1.06 1.01 0.98 1.07 0.99 1.04 1.05 A

A Milk Milk Sr-89 Sr-90 1-131 Ce-1 41 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 88.9 72.8 394 159 206 89.5 129 129 193 342 73.2 367 165 205 84.7 118 125 181 338 99.7 82.2 402 174 212 92.3 132 128 199 355 75.1 366 159 193 84.2 121 117 182 324 A

W A

A A

AP Ce-141 Cr-51 Cs-1 34 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 Charcoal 1-131 pCi 101 96.6 A

D-1

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2012 (PAGE 2 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a)

Value (b)

TBE/Analytics Evaluation (d)

June 2012 E10202 Water Fe-55 pCi/L 1890 1580 pCi/L 106 99.6 pCi/L 13,6 16,0 September2012 E10296 E10297 E10299 E10298 Milk Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 89.8 160 230 101 174 97.2 188 159 195 155 145 219 94.1 140 88.3 173 136 165 133 99.6 164 248 108 174 100 196 152 192 152 135 205 89.4 144 83.0 162 125 159 125 AP Ce-141 Cr-51 Cs-1 34 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 Charcoal 1-131 Water Fe-55 E10300 pCi 95.5 97.2 pCi/L 1630 1900 pCi/L 101 96.6 pCi/L 11.3 13.8 1.20 1.06 0.85 0.90 0.98 0.93 0.94 1.00 0.97 0.96 1.05 1.02 1.02 1.07 1.07 1.05 0.97 1.06 1.07 1.09 1.04 1.06 0.98 0.86 1.05 0.82 1.03 1.03 1.07 0.95 0.97 0.96 1.00 1.07 1.02 1.01 1.04 1.10 1.02 0.99 1.01 1.05 0.94 0.92 1.08 A

A A

A December2012 E10334 E10335 E10337A Milk Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 93.1 52.5 373 157 113 94.1 116 124 190 172 51.8 372 165 113 96.5 118 105 166 179 90.0 51.0 348 165 117 98.5 116 116 186 170 49.6 338 161 114 95.8 112 112 181 165 AP Ce-141 Cr-51 Cs-1 34 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 D-2

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2012 (PAGE 3 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a)

Value (b)

TBE/Analytics Evaluation (d)

December 2012 E10336 E10333 Charcoal 1-131 Water Fe-55 pCi 73.1 72.7 pCi/L 1550 1750 1.01 0.89 A

A (a) Teledyne Brown Engineering reported result.

(b) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.

(c) Ratio of Teledyne Brown Engineering to Analytics results.

(d) Analytics evaluation based on TBE internal QC limits: A= Acceptable. Reported result falls within ratio limits of 0.80-1.20.

W-Acceptable with warning. Reported result falls within 0. 70-0.80 or 1.20-1.30. N = Not Acceptable. Reported result falls outside the ratio limits of < 0. 70 and > 1.30.

D-3

TABLE D-2 ERA ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2012 (PAGE 1 OF 1)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a)

Value (b)

Limits Evaluation (c)

May 2012 RAD-89 MRAD-16 Water Sr-89 Sr-90 Ba-133 Cs-134 Cs-1 37 Co-60 Zn-65 Gr-A Gr-B 1-131 H-3 Filter Gr-A Water Sr-89 Sr-90 Ba-1 33 Cs-1 34 Cs-1 37 Co-60 Zn-65 Gr-A Gr-B 1-131 H-3 Filter Gr-A pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L 63.4 33.5 89.2 66.5 152 73.3 109 82.4 43.6 25.9 15433 58.5 37.4 82.3 74,2 155 72.9 105 62.9 44.2 27.1 15800 46.9 - 66.3 27.4 - 43.1 69.1 -90.5 60.6 - 81.6 140- 172 65.6 - 82.6 94.5-125 33.0 - 78.0 29.6-51.5 22.5-31.9 13800 - 17400 pCi/filter 39.5 77.8 26.1 - 121 A

A A

N (1)

A A

N (2)

A A

A N (2)

A A

November, 2012 RAD-91 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L 46.5 16.6 85.2 76.9 177 77.4 209 50.6 59.3 22.9 5020 39.1 20.1 84.8 76.6 183 78.3 204 58.6 39.2 24.8 4890 29.7-46.1 14.4 - 23.8 71.3 - 93.3 62.6 - 84.3 165-203 70.5 - 88.5 184-240 30.6 - 72.9 26.0-46.7 20.6 - 29.4 4190-5380 MRAD-1 7 pCi/filter 59.6 87.5 29.3-136 A

(1) Detector G 1 is slightly biased high for Th-230 based measurements used only for ERA Gross Alpha samples. NCR 12-05 (2) The Sr-89 found to known ratio was 1. 19, which TBE considers acceptable. It appears the aliquot was entered incorrectly for the Gross Beta NCR 12-13 (a) Teledyne Brown Engineenng reported result (b) The ERA known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.

(c) ERA evaluation: A=acceptable. Reported result falls within the Warning Limits. NA=not acceptable. Reported result falls outside of the Control Limits. CE=check for Error. Reported result falls within the Control Limits and outside of the Warning Limit.

D-4

TABLE D-3 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

TELEDYNE BROWN ENGINEERING, 2012 (PAGE I OF 2)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a)

Value (b)

Range Evaluation (c)

March 2012 12-MaW26 Water Cs-1 34 Cs-1 37 Co-57 Co-60 H-3 Mn-54 K-40 Sr-90 Zn-65 Water Gr-A Gr-B 12-GrW26 12-MaS26 Soil Cs-1 34 Cs-1 37 Co-57 Co-60 Mn-54 K-40 Sr-90 Zn-65 12-RdF26 12-GrF26 12-RdV26 September 2012 12-MaW27 12-GrW27 AP Cs-1 34 Cs-1 37 Co-57 Co-60 Mn-54 Sr-90 Zn-65 AP Gr-A Gr-B Vegetation Cs-1 34 Cs-1 37 Co-57 Co-60 Mn-54 Sr-90 Zn-65 Water Cs-1 34 Cs-1 37 Co-57 Co-60 H-3 Mn-54 K-40 Sr-90 Zn-65 Water Gr-A Gr-B Bq/L

-0.0045 Bq/L 37.5 39.9 Bq/L 30.8 32.9 Bq/L 22,4 23.72 Bq/L 456 437 Bq/L 31.0 31.8 Bq/L 144 142 Bq/L

-0.0084 Bq/L

-0.369 Bq/L 2.06 2.14 Bq/L 7.48 6.36 Bq/kg 831 828 Bq/kg 0.145 Bq/kg 1270 1179 Bq/kg 7.61 1.56 Bq/kg 634 558 Bq/kg 1690 1491 Bq/kg 328 392 Bq/kg 753 642 Bq/sample 2.31 2.38 Bq/sample 2.15 1.79 Bq/sample -0.0701 Bq/sample 2.62 2.182 Bq/sample 4.13 3.24 Bq/sample 0.0185 Bq/sample 4.19 2.99 Bq/sample 0.365 1.2 Bq/sample 2.31 2.4 Bq/sample 8.72 8.43 Bq/sample 0.0424 Bq/sample 15.5 12.0 Bq/sample 6.80 6.05 Bq/sample 0.0057 Bq/sample 2.24 2.11 Bq/sample 10.5 8.90 BqIL 21.4 23.2 BqIL 17.0 16.7 Bq/L 28.7 29.3 Bq/L 0.179 Bq/L 387 334 Bq/L 18.1 17.8 Bq/L 139 134 Bq/L 19.6 12.2 Bq/L 27.2 25.9 Bq/L 0.966 1.79 Bq/L 10.0 9.1 (1) 27.9 - 51.9 23.0 - 42.8 16.60 - 30.84 306 - 568 22.3 - 41.3 99 - 185 (1)

(1) 0.64 - 3.64 3.18-9.54 580- 1076 (1) 825 - 1533 (2) 391 - 725 1044 - 1938 274 - 540 449 - 835 1.67-3.09 1.25 -2.33 (1) 1.527 - 2.837 2.27-4.21 (1) 2.09 - 3.89 0.4 - 2.0 1.2-3.6 5.90- 10.96 (1) 8.4-15.6 4.24 - 7.87 (1) 1.48-2.74 6.23-11.57 16.2-30.2 11.7-21.7 20.5 - 38.1 (1) 234 - 434 12.5-23.1 94-174 8.5-15.9 18.1 -33.7 0.54 - 3.04 4.6-13.7 A

A A

N (3)

A A

A W

W A

N (3)

A A

W A

A A

N (4)

A A

D-5

TABLE D-3 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

TELEDYNE BROWN ENGINEERING, 2012 (PAGE 2 OF 2)

Identification Reported Known Acceptance MonthlYear Number Media Nuclide Units Value (a)

Value (b)

Range Evaluation (c)

September 2012 12-MaS27 Soil Cs-1 34 Cs-1 37 Co-57 Co-60 Mn-54 K-40 Sr-90 Zn-65 Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg 880 1220 1330 552 1000 674 528 665 939 1150 1316 531 920 632 508 606 657-1221 805-1495 921-1711 372-690 644-1196 442-822 356-660 424-788 12-RdF27 12-GrF27 12-RdV27 AP Cs-134 Cs-1 37 Co-57 Co-60 Mn-54 Sr-90 Zn-65 AP Gr-A Gr-B Vegetation Cs-1 34 Cs-1 37 Co-57 Co-60 Mn-54 Sr-90 Zn-65 Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample 2.760 0.0415 2.00 1.78 2.40 0.931

-0.688 2.74 1.92-3.56 (1) 191.00 1.34-2.48 1.728 1.210 - 2.246 2.36 1.65 - 3.07 1.03 0.72 - 1.34 (1)

A A

Bq/sample 0.434 0.97 0.29-1.65 Bq/sample 1.927 1.92 0.96 - 2.88 Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample 6.28 4.62 6.51 5.32 3.59 0.0012

-0.046 6.51 4.38 5.66 5.12 3.27 4.56 - 8.46 3.07 - 5.69 3.96 - 7.36 3.58 - 6.66 2.29 - 4.25 (1)

(1)

(1) False positive test.

(2) Sensitivity evaluation (3) No cause was found for the failed high soil Co-60 sensitivity test or the high Zn-65 in AP, which TBE considers an anomaly. NCR 12-08 (4) Sr-90 in water high due to incorrect aliquot entered in LIMS. 12-11 (a) Teledyne Brown Engineenng reported result.

(b) The MAPEP known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.

(c) DOEIMAPEP evaluation: A=acceptable, W=acceptable with warning, N=not acceptable.

D-6

APPENDIX E ERRATA DATA

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There is no errata data for 2012.

Intentionally left blank

APPENDIX F ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)

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Docket No:

50-010 50-237 50-249 DRESDEN NUCLEAR POWER STATION UNITS 1, 2 and 3 Annual Radiological Groundwater Protection Program Report 1 January Through 31 December 2012 Prepared By Teledyne Brown Engineering Environmental Services o

Exe0on Generation, Dresden Nuclear Power Station Morris, IL 60450 May 2013

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Table of Contents I. Sum m ary and Conclusions..............................................................................................

I I1. Introduction.............................................................................................................

2 A. O bjectives of the RG PP..................................................................................

3 B. Im plem entation of the O bjectives..................................................................

4 C. Program Description......................................................................................

4 D. Characteristics of Tritium (H-3)......................................................................

4 I1l. Program Description..................................................................................................

5 A. Sam ple Analysis..............................................................................................

5 B. Data Interpretation.........................................................................................

6 C. Background Analysis.......................................................................................

7

1. Background Concentrations of Tritium.................................................

7 IV. Results and Discussion...........................................................................................

9 A. G roundwater Results.......................................................................................

9 B. Surface W ater Results..................................................................................

11 C. Precipitation W ater Results...........................................................................

12 D. Drinking W ater W ell Survey.........................................................................

12 E. Summary of Results - Inter-laboratory Comparison Program......................

12 F. Leaks, Spills, and Releases........................................................................

12 G. Trends..........................................................................................................

12 H. Investigations................................................................................................

13 I. Actions Taken................................................................................................

13

- i -

Appendices ARGPPR Appendix A Location Designation Tables Table A-1 Fiqures ARGPPR Appendix B Tables Table B-1.1 Radiological Groundwater Protection Program - Sampling Locations, Distance and Direction, Dresden Nuclear Power Station, 2012 Security-Related Information: Maps of the Dresden Nuclear Power Station have been withheld from public disclosure under 10CFR2.390 and N.J.S.A. 47:1A-1.1 Data Tables Concentrations of Tritium, Strontium, Gross Alpha and Gross Beta in Groundwater Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Hard-To-Detects in Groundwater Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Concentrations of Tritium in Precipitation Water Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2012.

Table B-1.2 Table B-1.3 Table B-11.1 Table B-11.2 Table B-Ill.1

- ii -

I.

Summary and Conclusions Dresden Station is situated on approximately 600 acres of land that borders the Illinois River to the north and the Kankakee River to the east. This land is referred to as the owner-controlled area. The Dresden power plant itself takes up a small parcel of the owner-controlled area and is surrounded by a security fence. The security fence defines what is known as the Protected Area (PA).

The Dresden power plant has experienced leaks from underground lines and spills from systems containing radioactive water over its 50 year history. These incidents have created a number of areas of localized contamination within the PA. Isotopic analyses of groundwater in many of these areas show measurable concentrations of tritium (H-3).

Dresden participated in a fleetwide hydrogeologic investigation in during the summer of 2006 in an effort to characterize groundwater movement at each site. This investigation also compiled a list of the historic spills and leaks as well as a detailed analysis on groundwater hydrology for Dresden Nuclear Generation Station. Combining the tritium concentration in a locally contaminated area with the speed and direction of groundwater in the vicinity can produce a contaminated groundwater plume projection. If the plume of contaminated groundwater passes through the path of a groundwater monitoring well, it can be anticipated that the tritium concentration in this well will increase to some maximum concentration, then decrease over time.

The fleetwide Hydrogeologic Investigation Report (HIR) shows that groundwater movement on the Dresden site is very slow. In addition, there is a confining rock layer, the Maquoketa Shale layer, about 55 feet below the surface that impedes groundwater movement below this depth.

Dresden has a domestic water system that is supplied by two deep wells (1500 feet deep) that were installed about 50 years ago south of the PA. Samples taken from domestic water supply have never shown any detectable tritium concentration.

Tritium has a half-life of 12.3 years. This means that 40 years from now 90% of the tritium on site today will have decayed away to more stable elements. Given the limited volume of contaminated groundwater on site, radioactive decay, slow groundwater movement, and dilution effects, the conclusion of the HIR is that the operation of Dresden Nuclear Power Station has no adverse radiological impact on the environment.

As a result there is little potential for contaminated groundwater on site to affect off-site drinking water.

II.

Introduction Radiological Groundwater Monitoring Program (RGPP):

Dresden has a Radiological Groundwater Monitoring Program (RGPP) that provides long-term monitoring intended to verify the fleet-wide hydrogeologic study conclusions.

Dresden uses developed groundwater wells and surface water sample points in the RGPP.

The Dresden RGPP was established in 2006 and there have been no significant changes to this program. This program does not impact the operation of the plant and is independent of the REMP.

Developed groundwater wells are wells that were installed specifically for monitoring groundwater. These wells are equipped with screens and are properly sealed near the surface to avoid surface water intrusion. The wells were designed in accordance with appropriate codes and developed in accordance with appropriate standards and procedures. Dresden has groundwater monitoring wells identified as "shallow" (depths from 15 to 35 feet), "Intermediate" (depths from 35 to 55 feet) and "deep" (depths beyond 100 feet). All wells installed to a depth greater than 100 feet ("deep" wells) were found to be dry and removed from the RGPP. Surface water sample points are identified sample locations in the station's canals and cooling pond.

There are 89 sampling points in the RGPP:

Dresden has 45 developed groundwater monitoring wells within the PA. Some of these wells form a ring just inside the security fence and the remaining wells were installed near underground plant system piping that contains radioactive water.

Dresden has 26 developed groundwater monitoring wells outside the PA the majority of which form a ring just within the perimeter of the property.

Dresden has 8 surface water monitoring locations on the owner-controlled area sampled as part of the Dresden RGPP.

Dresden has 4 precipitation water monitoring locations sampled as part of the Dresden RGPP. An additional 8 locations were studied in 2011 through 2012, but only 4 locations are currently permanently a part of the RGPP program.

Dresden has 6 sentinel wells. These wells are not constructed to code or developed to a standard. The majority of these wells are idle and only used for qualitative troubleshooting.

The Dresden site-specific RGPP procedure identifies the historic 'events' that would affect the individual RGPP sample results. This procedure identifies threshold values for each sample point, which if exceeded, could be an indication of a new spill from an above ground system or a new leak in an underground pipe containing tritiated water.

The RGPP sample points are currently sampled on a frequency determined by the well detection category in accordance with site document EN-DR-408-4160, Dresden RGPP Reference Material. During 2012, there were 484 analyses that were performed on 229 samples from 89 sampling points.

Sentinel Wells, sometimes referred to as "baby wells" are wells that were installed to monitor local shallow groundwater; typically in associated with a historic underground pipe leak. These wells are not constructed to code or developed to a standard. Most sentinel wells are from 6 to 12 feet deep and consist of 2" PVC pipe without screens.

These wells are categorized as idle wells and are used only for troubleshooting purposes.

Dresden has two basic storm water runoff sewer systems within the PA: one sewer system routes to the east, then north and discharges into the Unit 1 intake canal, the second sewer-system routes to the west, then north, through a large Oil/Water Separator and discharges to the hot canal. Both the Unit 1 intake canal and the hot canal eventually route to the cooling pond. The Dresden Station RGPP has eight RGPP surface water sampling points to monitor these systems.

A.

Objectives of the RGPP The Objective of the RGPP is to provide long-term monitoring intended to verify the fleet-wide hydrogeologic study conclusions. The objective of the site-specific RGPP is to provide indication of short-term changes to groundwater tritium concentrations within the PA.

If isotopic results of groundwater samples exceed the thresholds specified in this procedure it could be an indication of a new spill from an above ground system or a new leak in an underground pipe containing tritiated water.

Specific Objectives include:

1.

Perform routine water sampling and radiological analysis of water from selected locations.

2.

Report new leaks, spills, or other detections with potential radiological significance to stakeholders in a timely manner.

3.

Regularly assess analytical results to identify adverse trends.

3.

Take necessary corrective actions to protect groundwater resources.

B.

Implementation of the Objectives

1.

Dresden Nuclear Power Station will continue to perform routine sampling and radiological analysis of water from selected locations.

2.

Dresden Nuclear Power Station has implemented procedures to identify and report new leaks, spills, or other detections with potential radiological significance in a timely manner.

3.

Dresden Nuclear Power Station staff and consulting hydrogeologist assess analytical results on an ongoing basis to identify adverse trends.

4.

If an adverse trend in groundwater monitoring analytical results is identified, further investigation will be undertaken. If the investigation identifies a leak or unidentified spill, corrective actions will be implemented.

C.

Program Description Dresden has a Radiological Groundwater Monitoring Program (RGPP) that provides long-term monitoring intended to verify the fleet-wide hydrogeologic study conclusions. Dresden uses 89 developed groundwater wells and surface water sample points in the RGPP.

1.

Sample Collection Sample locations can be found in Table A-i, Appendix A.

Groundwater and Surface Water Water samples are collected in accordance with the schedule delineated in the Dresden site-specific RGPP procedures.

Analytical laboratories are subject to internal quality assurance programs, industry crosscheck programs, as well as nuclear industry audits. Station personnel review and evaluate the analytical results.

D.

Characteristics of Tritium (H-3)

Tritium (chemical symbol H-3) is a radioactive isotope of hydrogen. The most common form of tritium is tritium oxide, which is also called "tritiated water." The chemical properties of tritium are essentially those of ordinary hydrogen.

Tritiated water behaves the same as ordinary water in both the environment and the body. Tritium can be taken into the body by drinking water, breathing air, eating food, or absorption through skin. Once tritium enters the body, it disperses quickly and is uniformly distributed throughout the body. Tritium is excreted primarily through urine with a clearance rate characterized by an effective biological half-life of about 14 days. Within one month or so after ingestion, essentially all tritium is cleared. Organically bound tritium (tritium that is incorporated in organic compounds) can remain in the body for a longer period.

Tritium is produced naturally in the upper atmosphere when cosmic rays strike air molecules. Tritium is also produced during nuclear weapons explosions, as a by-product in reactors producing electricity and in special production reactors, where the isotopes lithium-7 and/or boron-10 are activated to produce tritium.

Like normal water, tritiated water is colorless and odorless. Tritiated water behaves chemically and physically like non-tritiated water in the subsurface and therefore tritiated water will travel at the same velocity as the average groundwater velocity.

Tritium has a half-life of approximately 12.3 years. It decays spontaneously to helium-3 (3He). This radioactive decay releases a beta particle (low-energy electron). The radioactive decay of tritium is the source of the health risk from exposure to tritium. Tritium emits very weak radiation and leaves the body relatively quickly. Since tritium is almost always found as water it goes directly into soft tissues and organs. The associated dose to these tissues is generally uniform and is dependent on the water content of the specific tissue.

IIl.

Program Description A.

Sample Analysis This section describes the general analytical methodologies used by Teledyne Brown Engineers (TBE) to analyze the environmental samples for radioactivity for the Dresden Nuclear Power Station RGPP in 2012.

In order to achieve the stated objectives, the current program includes the following analyses:

1.

Concentrations of gamma emitters in groundwater and surface water.

2.

Concentrations of strontium in groundwater.

3.

Concentrations of tritium in groundwater, surface water and precipitation water.

4.

Concentrations of gross alpha and gross beta in groundwater.

5.

Concentrations of Am-241 in groundwater.

6.

Concentrations of Cm-242 and Cm-243/244 in groundwater.

7.

Concentrations of Pu-238 and Pu-239/240 in groundwater.

8.

Concentrations of U-233/234, U-235 and U-238 in groundwater.

9.

Concentrations of Fe-55 in groundwater.

10.

Concentrations of Ni-63 in groundwater.

B.

Data Interpretation The radiological data collected prior to Dresden Nuclear Power Station becoming operational were used as a baseline with which these operational data were compared. For the purpose of this report, Dresden Nuclear Power Station was considered operational at initial criticality. Several factors were important in the interpretation of the data:

1.

Lower Limit of Detection and Minimum Detectable Concentration The Lower Limit of Detection (LLD) is the minimum sensitivity value that must be achieved routinely by the analytical parameter.

2.

Laboratory Measurements Uncertainty The estimated uncertainty in measurement of tritium in environmental samples is frequently on the order of 50% of the measurement value.

Statistically, the exact value of a measurement is expressed as a range with a stated level of confidence. The convention is to report results with a 95% level of confidence. The uncertainty comes from calibration standards, sample volume or weight measurements, sampling uncertainty and other factors. Exelon reports the uncertainty of a measurement created by statistical process (counting error) as well as all sources of error (Total Propagated Uncertainty or TPU). Each result has two values calculated. Exelon reports the TPU by following the result with plus or minus +/- the estimated sample standard deviation as TPU that is obtained by propagating all sources of analytical uncertainty in measurements.

Analytical uncertainties are reported at the 95% confidence level in this report for reporting consistency with the AREOR.

Gamma spectroscopy results for each type of sample were grouped as follows:

For groundwater and surface water 14 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, 1-131, Cs-134, Cs-137, Ba-140 and La-140 were reported.

C.

Background Analysis A pre-operational radiological environmental monitoring program (pre-operational REMP) was conducted to establish background radioactivity levels prior to operation of the Station. The environmental media sampled and analyzed during the pre-operational REMP were atmospheric radiation, fall-out, domestic water, surface water, marine life and food stuffs. The results of the monitoring were detailed in the report entitled, Environmental Radiological Monitoring for Dresden Nuclear Power Nuclear Power Station, Commonwealth Edison Company, Annual Report 1986, May 1987.

1.

Background Concentrations of Tritium The purpose of the following discussion is to summarize background measurements of tritium in various media performed by others. Additional detail may be found by consulting references (CRA 2006).

a.

Tritium Production Tritium is created in the environment from naturally occurring processes both cosmic and subterranean, as well as from anthropogenic (i.e., man-made) sources. In the upper atmosphere, "Cosmogenic" tritium is produced from the bombardment of stable nuclides and combines with oxygen to form tritiated water, which will then enter the hydrologic cycle. Below ground, "lithogenic" tritium is produced by the bombardment of natural lithium present in crystalline rocks by neutrons produced by the radioactive decay of naturally abundant uranium and thorium. Lithogenic production of tritium is usually negligible compared to other sources due to the limited abundance of lithium in rock. The lithogenic tritium is introduced directly to groundwater.

A major anthropogenic source of tritium and strontium-90 comes from the former atmospheric testing of thermonuclear weapons. Levels of tritium in precipitation increased significantly during the 1950s and early 1960s, and later with additional testing, resulting in the release of significant amounts of tritium to the atmosphere. The Canadian heavy water nuclear power reactors, other commercial power reactors, nuclear research, and weapons production continue to influence tritium concentrations in the environment.

b.

Precipitation Data Precipitation samples are routinely collected at stations around the world for the analysis of tritium and other radionuclides. Two publicly available databases that provide tritium concentrations in precipitation are Global Network of Isotopes in Precipitation (GNIP) and USEPA's RadNet database. GNIP provides tritium precipitation concentration data for samples collected worldwide from 1960 to 2006.

RadNet provides tritium precipitation concentration data for samples collected at stations throughout the U.S. from 1960 up to and including 2006. Based on GNIP data for sample stations located in the U.S. Midwest, tritium concentrations peaked around 1963. This peak, which approached 10,000 pCi/L for some stations, coincided with the atmospheric testing of thermonuclear weapons.

Tritium concentrations in surface water showed a sharp decline up until 1975 followed by a gradual decline since that time. Tritium concentrations in Midwest precipitation have typically been below 100 pCi/L since around 1980.

Tritium concentrations in wells may still be above the 200-pCi/L detection limit from the external causes described above. Water from previous years and decades is naturally captured in groundwater, so some well water sources today are affected by the surface water from the 1960s that was elevated in tritium.

c.

Surface Water Data Tritium concentrations are routinely measured in large surface water bodies, including Lake Michigan and the Mississippi River. Illinois surface water data were typically less than 100 pCi/L.

The radio-analytical laboratory is counting tritium results to an Exelon specified LLD of 200 pCi/L. Typically, the lowest positive measurement will be reported within a range of 40 -

240 pCi/L or 140 +/- 100 pCi/L. These sample results cannot be distinguished as different from background at this concentration.

IV.

Results and Discussion Dresden Station initiated a Radiological Groundwater Protection Program (RGPP) in 2006.

A.

Groundwater Results Groundwater Samples were collected from on-site wells throughout the year in accordance with Dresden's RGPP. Analytical results and anomalies are discussed below.

Tritium Tritium concentrations in the shallow and intermediate aquifer are stable or decreasing over time. Tritium concentrations in MW-DN-1 24S and MW-DN-1 241 continue to be closely monitored for the existing plume in this area. The few wells that exceed the United States Environmental Protection Agency (USEPA) drinking water standard (and the Nuclear Regulatory Commission Reporting Limit) of 20,000 pCi/L are located onsite and are not available as a drinking water source. Although tritium is detected in a large number of these wells, it is important to note that the majority were installed in areas of historic spills or close to piping containing tritiated water (Table B-1.1, Appendix B).

Strontium Samples were collected and analyzed for strontium-89 and strontium-90 activity (Table B-1.1. Appendix B). Strontium-89 was not detected in any of the samples. Strontium was detected at a concentration greater than 1 pCi/L at one sampling location (MW-DN-105-S) in three of 30 samples.

The concentrations ranged from 1.3 to 2.6 pCi/L.

Gross Alpha and Gross Beta (dissolved and suspended)

Gross Alpha and Gross Beta analyses in the dissolved and suspended fractions were performed on groundwater samples throughout the sampling year in 2012. Gross Alpha (dissolved) was detected in 13 groundwater locations. The concentrations ranged from 1.8 to 13.9 pCi/L.

Gross Alpha (suspended) was detected in two groundwater locations.

The concentrations ranged from 1.6 to 7.0 pCi/L. Gross Beta (dissolved) was detected in 26 of the groundwater locations. The concentrations ranged from 1.6 to 80.0 pCi/L. Gross Beta (suspended) was detected in one groundwater location at a concentration of 41.5 pCi/L. The concentrations of Gross Alpha and Gross Beta, which are slightly above detectable levels, are considered to be background and are not the result of plant effluents.

Gamma Emitters Naturally-occurring K-40 was detected in four samples. The concentrations ranged from 53 to 111 pCi/L. No other gamma emitting nuclides were detected (Table B-1.2, Appendix B).

Hard-To-Detects Hard-To-Detect analyses were performed on 2 groundwater locations to establish background levels. The analyses included Fe-55, Ni-63, Am-241, Cm-242, Cm-243/244, Pu-238, Pu-239/240, U-233/234, U-235 and U-238. The isotope U-233/234 and U-238 was detected at one of the two groundwater monitoring locations. The concentration of U-234 was 0.9 pCi/L and the concentration U-238 was 0.66 pCi/L (Table B-1.3, Appendix B). The concentrations detected are considered background.

All other hard-to-detect nuclides were not detected at concentrations greater than their respective MDCs.

B.

Surface Water Results Surface Water Samples were collected from eight surface water locations throughout the year in accordance with the station radiological groundwater protection program. Analytical results and anomalies are discussed below.

Tritium Samples from all locations were analyzed for tritium activity (Table B-II. 1, Appendix B). Tritium values ranged from the detection limit to 5,490 pCi/l.

The measurable concentrations of tritium are from an upstream source.

Strontium Samples were not analyzed for strontium activity (Table B-11.1. Appendix B).

Gross Alpha and Gross Beta (dissolved and suspended)

Samples were not analyzed for Gross Alpha and Gross Beta in 2012.

Gamma Emitters Naturally occurring K-40 was detected in one sample at a concentration of 84 pCi/L. No other gamma emitting nuclides were detected (Table B-11.2, Appendix B).

Hard-To-Detects Samples were not analyzed for Hard-To-Detect analyses in 2012.

C.

Precipitation Water Results Precipitation Water Samples were collected from 4 precipitation water locations throughout the year in accordance with the station radiological groundwater protection program. Analytical results and anomalies are discussed below.

Tritium Samples from 4 locations were analyzed for tritium activity (Table B-111.1, Appendix B). Tritium was not detected in any samples.

D.

Drinking Water Well Survey No drinking water well surveys were conducted in 2012.

E.

Summary of Results - Inter-Laboratory Comparison Program Inter-Laboratory Comparison Program results for TBE are presented in the AREOR.

F.

Leaks, Spills, and Releases There were no leaks, spills or releases of radioactive material in 2012.

However, two new shallow wells, MW-DN-140S and MW-DN-141S were installed down gradient from the radioactive waste tank farm in response to an identified floor defect on "A" Waste sample Tank and extent of condition concerns. The samples collected from the newly installed wells tend to support that there was no impact on groundwater associated with the identified floor defect.

G.

Trends The elevated tritium concentrations are expected for the wells in the vicinity (MW-DN-1 24S and MW-DN-1 241) as the plume continues to reside in this area.

Overall, tritium concentrations in the shallow and intermediate aquifers are decreasing over time.

H.

Investigations Six new monitoring wells were installed in late 2012 and will be added to the RGPP program in 2013. Four monitoring wells were installed at the mausoleum, MW-DN-134S, MW-DN-135S, MW-DN-136S and MW-DN-137S. Initial tritium and gamma isotopic analyses indicate that the mausoleum has had no impact on groundwater quality in this area.

Two new monitoring wells were installed due to a floor defect that was identified on the "A" Waste Sample Tank that is part of the radiological waste processing system above ground tank farm. These two new wells, MW-DN-140S and MW-DN-141S were analyzed for tritium and gamma isotopic. The results, compared to existing trends, indicate that the floor defect had no impact on groundwater quality in this area.

1.

Actions Taken

1.

Compensatory Actions The six newly installed wells in the fourth quarter of 2012 verified no groundwater impacts in the vicinity of the mausoleum and radioactive waste processing system. The action has been taken to add these new wells to the RGPP program.

2.

Actions to Recover/Reverse Plumes No actions were taken in 2012 by Dresden Station in an effort to reverse plume movement.

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APPENDIX A LOCATION DISTANCE

TABLE A-i:

Radiological Groundwater Protection Program - Sampling Locations, Dresden Nuclear Power Station, 2012 Site Site Type Location DSP-105 DSP-106 DSP-107 DSP-108 DSP-117 DSP-121 DSP-122 DSP-123 DSP-124 DSP-125 DSP-126 DSP-147 DSP-148 DSP-149R DSP-150 DSP-151 DSP-152 DSP-153 DSP-154 DSP-156 DSP-157-1 DSP-157-M DSP-157-S DSP-158-1 DSP-158-M DSP-158-S DSP-159-1 DSP-159-M DSP-159-S MW-DN-101-1 MW-DN-101-S MW-DN-102-1 MW-DN-102-S MW-DN-103-1 MW-DN-103-S MW-DN-104-S MW-DN-105-S MW-DN-106-S MW-DN-107-S MW-DN-108-1 MW-DN-109-1 MW-DN-109-S MW-DN-110-1 MW-DN-110-S MW-DN-111-S MW-DN-1 12-1 MW-DN-1 12-S MW-DN-1 13-1 MW-DN-1 13-S MW-DN-1 14-1 MW-DN-114-S MW-DN-115-1 MW-DN-115-S MW-DN-1 16-1 MW-DN-116-S MW-DN-117-1 MW-DN-118-S MW-DN-1 19-1 MW-DN-119-S MW-DN-120-1 MW-DN-120-S MW-DN-121-S Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well 30 feet east of the east wall of the EM Shop 65 feet east of east wall of EM Shop 9 feet east of the east Unit 1 Fuel Pool wall 40 ft east of the Unit 1 Sphere Northeast of Unit 1 Sphere; 825 feet west of Ross Bridge 72 feet north of 2/3 Intake Canal fence 50 feet north of the Radwaste Tank Farm Northeast corner of the Unit 1 Off-gas Building 9 feet south of Floor Drain Collector Tank Northeast corner of the Unit 2/3A CST 21 feet northwest of the northwest bend in road behind Training Building 325 feet west of Telemetry Bridge 130 feet southeast of the Flow Regulating Station building 35 feet south by southwest of the 138 KV yard fence 85 feet east of the northeast comer of the Unit 1 Spent Fuel Pool pad 65 feet north of the northeast comer of the Storeroom 210 feet south by southeast of the southeast corner of Maintenance Garage 150 feet east of the southeast comer of liquid hydrogen tank farm fence 33 feet west of the track; 165 feet east of the Security Checkpoint 70 feet east by northeast of the northwest comer of 138 KV yard fence 25 feet south of the south edge of the Employee Parking lot 25 feet south of the south edge of the Employee Parking lot 25 feet south of the south edge of the Employee Parking lot 53 feet west of the Kankakee River; 33 feet west of the cinder track 53 feet west of the Kankakee River; 33 feet west of the cinder track 50 feet west of the Kankakee River; 33 feet west of the cinder track 250 feet west of the Thorsen house; 450 ft south of the plant access gate 250 feet west of the Thorsen house; 450 ft south of the plant access gate 251 feet west of the Thorsen house; 450 ft south of the plant access gate 60 feet north of the Unit 1 Diesel Fuel Storage 60 feet north of the Unit 1 Diesel Fuel Storage 12 feet south of the southeast comer of the MUDS Building 13 feet south of the southeast comer of the MUDS Building 280 feet west of the northwest comer of N-GET Building 281 feet west of the northwest comer of N-GET Building 50 feet north of Radwaste Tank Farm 65 feet north of the northeast comer of the Storeroom 75 feet north of the 2/3 Intake Canal fence; east of the Unit 1 Intake Canal 15 feet west by southwest of the Unit 1 CST 7 feet southwest of the southwest comer of the Unit 1 Cribhouse 8 feet north of Chemistry Building 8 feet north of Chemistry Building 25 feet west of the Waste Water Treatment (WWT) Building 25 feet west of the Waste Water Treatment (WWT) Building 9 feet east of the Floor Drain Collector Tank 100 feet south of the Chemistry Building 100 feet south of the Chemistry Building 90 feet west of the southwest comer of the Administration Building 91 feet west of the southwest comer of the Administration Building 50 feet east of the Unit 1 Clean Demineralized Water Tank 8 feet southwest of the Radiation protection Dept west access doors 11 feet south of Instrument Maintenance Shop 12 feet south of Instrument Maintenance Shop 75 feet south of the Calgon Building roll-up door 75 feet south of the Calgon Building roll-up door 35 feet east by northeast of the Unit 1 Stack Southeast corner of the Unit 1 Fuel Pool 20 feet east by northeast of the Unit 1 Sewage Ejector Building 21 feet east by northeast of the Unit 1 Sewage Ejector Building 45 feet north by northeast of the Ross Bridge railing 46 feet north by northeast of the Ross Bridge railing 7 feet west of the dirt road; 42 feet east of the 345KV yard fence A-1

TABLE A-1:

Radiological Groundwater Protection Program - Sampling Locations, Dresden Nuclear Power Station, 2012 Site Site Type Location MW-DN-122-1 MW-DN-122-S MW-DN-123-1 MW-DN-123-S MW-DN-124-1 MW-DN-124-S MW-DN-125-S MW-DN-126-S MW-DN-127-S MW-DN-134-S MW-DN-135-S MW-DN-136-S MW-DN-137-S MW-DN-140-S MW-DN-141-S MW-DN-MD-11 DSP-131 DSP-132 SW-DN-101 SW-DN-102 SW-DN-103 SW-DN-104 SW-DN-105 SW-DN-106 Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well 150 feet north of Collins Road; northeast of the G.E. Fuel Storage Facility 150 feet north of Collins Road; northeast of the G.E. Fuel Storage Facility 400 feet west of the Thorsen house; west of the Cold Canal 400 feet west of the Thorsen house; west of the Cold Canal 10 feet south of the liquid nitrogen inerting tanks 10 feet south of the liquid nitrogen inerting tanks 40 feet east of 2/3 B CST 15 feet south of fence around Unit 2/3 A CST and B CST (outside of fence) 20 feet south of Unit 3 HRSS 20-ft North of Mausoleum Building 20-ft East of Mausoleum Building 14.5-ft South of Mausoleum Building 20-ft West of Mausoleum Building East of MW-DN-104S at SW comer outside of 2/3 crib house North of 'A' Waste Tank next to 2/3 main chimney Piping located between Condensate Storage Tanks.

Surface Water Storm water - 35 ft NE of the Unit 2/3 heating boiler 150,000 gallon diesel fuel storage tank. 15 ft W of the hot canal fence - underneath Security Block Surface Water Storm water - 150 ft NE of the Unit 1 Sphere. The sewer is in the middle of the road with a solid cover (no slots). There are two other sewers in the vicinity with solid covers on them, but both have the word "SANITARY" on the cover. The sewer is 66 ft SE of the Unit 1 diesel fuel transfer shed.

Surface Water Unit 2/3 Intake (DSP50) at the Ross Bridge Surface Water Unit 2/3 Discharge (DSP20) at the Telemetry Bridge Surface Water Unit 2/3 Return Canal at the Discharge to the Intake Canal Surface Water Cold Canal (DSP34A) at the Cooling Tower walkway bridge Surface Water Hot Canal (DSP34B) at the Cooling Tower walkway bridge Surface Water Cooling Pond - Pool II at the east side of the Covered Bridge Precipitation 40 feet southwest of Unit 2/3 Off-gas Filter Building access door; north end of guardrail Precipitation 50 feet East of Chem Feed Trailer Precipitation South of Stock Truck Bay rollup door Precipitation Southeast comer of Unit 3 RB Interlock Precipitation East of Unit 2/3 Intake Ross barrier Precipitation North of Unit 1 Chimney Precipitation Southeast of Unit 2 TB Trackway Precipitation Southwest comer of 2/3 CST on fence Precipitation South of MUDS Building on Security fence Precipitation At the fence at the northwest comer of the SBO Building Precipitation 30 feet east of the east wall of the EM shop; at the stanchion for RGPP well DSP-105 Precipitation 60 feet southeast of the southwest corner of the Admin Building; on the security fence FW-1 FW-2 FW-3 FW-4 FW-5 FW-6 FW-7 FW-8 FW-9 FW-10 FW-1 1 FW-12 A-2

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ARGPPR APPENDIX B DATA TABLES

Intentionally left blank

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE DSP-105 DSP-105 DSP-105 DSP-105 DSP-106 DSP-106 DSP-106 DSP-106 DSP-107 DSP-107 DSP-107 DSP-107 DSP-108 DSP-108 DSP-108 DSP-108 DSP-122 DSP-122 DSP-122 DSP-122 DSP-123 DSP-123 DSP-123 DSP-123 DSP-124 DSP-124 DSP-124 DSP-124 DSP-125 DSP-125 DSP-125 DSP-125 DSP-126 DSP-131 DSP-131 DSP-131 DSP-131 DSP-132 DSP-132 DSP-132 DSP-132 DSP-148 DSP-148 DSP-148 DSP-149R DSP-149R DSP-149R DSP-149R DSP-150 DSP-150 DSP-150 DSP-150 DSP-151 COLLECTION DATE 03/26/12 05/30/12 08/27112 10/24/12 03/26/12 05/30/12 08/27/12 10/24/12 03/21/12 05/29/12 08/27/12 10/24/12 03/21/12 05/29/12 08/27/12 10/24/12 03/20/12 05/25/12 08/21/12 10/23/12 03/21/12 05/29/12 08/21/12 10/24/12 03/27/12 06/05/12 08/28/12 10/30/12 03/19/12 05/22/12 08/21/12 10/30/12 06/06/12 03/27/12 06/05/12 08/29/12 10/30/12 03/27/12 06/05/12 08/29/12 10/30/12 03/28/12 08/29/12 10/31/12 03/28/12 05/21/12 08/29112 10/31/12 03/26/12 05/30/12 08/27/12 10/24/12 03/26/12 H-3 SR-89 SR-90 GR-A (DIS)

GR-A (SUS)

GR-B (DIS) GR-B (SUS)

< 181

167 313 129

172 2560 _ 313 2900 + 337 3120 + 359 2950 +/- 340 3240 +/- 371 3570 +/- 404 3190 +/- 366 2880 +/- 336 859 +/- 147 835 +/- 146 933 +/- 164 957 +/- 163 1420 +/- 201 1100 +/- 179 1230 +/- 179 1190 +/- 179 2670 +/- 321 2360 +/- 284 2340 + 281 2530 +/- 300 6410 +/- 684 6470 +/- 693 4760 +/- 518 4140 +/- 461 178 +/- 116

< 196 258 +/- 128 226 +/- 116

< 189 234 +/- 116

< 188 256 +/- 131

< 170 235 +/- 116

< 187 208 +/- 124 737 +/- 140 213 +/- 115 435 +/- 139 333 +/- 122 283 +/- 120

< 200 398 +/- 136 177 +/- 112

< 168

< 171

< 184

< 166

< 5.7

< 0.7

< 5.1

< 4.8

< 0.7

< 0.9

< 0.4

< 0.6

< 1.0

< 0.8

< 1.1

< 0.8

< 0.3

< 0.3 1.6 +/- 0.7

< 1.4 4.2 +/- 1.1

< 1.4 5.3 +/- 1.2

< 1.6 12.1 +/- 1.5

< 1.6 8.2 +/- 1.4

< 1.6 26.4 +/- 3.6

< 2.1

< 4.9

< 0.9

< 3.6

< 0.7 2.0 +/- 1.1 < 0.3 9.1 +/- 3.4 < 0.7 B-1

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE I

DSP-151 DSP-151 DSP-151 DSP-154 OSP-156 DSP-156 DSP-156 DSP-156 DSP-1571 (M)

DSP-157S DSP-1591 (M)

DSP-159S MW-DN-1011 MW-DN-1011 MW-ON-1011 MW-DN-1011 MW-DN-101S 189 178 170 187 COLLECTION DATE 05/30112 08/27/12 10/29/12 06/06/12 03/28/12 05/21/12 08/29/12 10/31/12 06/06/12 06/06/12 06/06/12 06/06/12 03/21/12 05/29/12 08/22/12 10124/12 03/21/12

189

178

170

187 H-3 SR-89 SR-90 GR-A (DIS)

GR-A (SUS)

GR-B (DIS) GR-B (SUS)

MW-DN-101S 05/29/12 MW-DN-101S 08/22/12 MW-DN-l01S MW-DN-1021 MW-DN-1021 MW-DN-1021 MW-DN-1021 MW-DN-102S MW-DN-102S MW-DN-102S MW-DN-102S MW-DN-1031 MW-DN-103S MW-DN-104S MW-DN-104S MW-DN-104S MW-DN-104S MW-DN-105S MW-DN-105S MW-DN-105S MW-DN-105S MW-DN-106S MW-DN-107S MW-DN-107S MW-DN-1081 MW-DN-1081 MW-DN-1081 MW-DN-1081 MW-DN-1091 MW-DN-1091 MW-DN-1091 MW-DN-1091 MW-DN-109S MW-DN-109S MW-DN-109S MW-DN-109S 10/24/12 03/27/12 06/04/12 08128/12 10/30/12 03/27/12 06/04/12 08/28/12 10/30/12 06/06/12 06/06/12 03/20/12 05/23/12 08/21/12 10/23/12 03126/12 05/30/12 08/27/12 10/29/12 05/21/12 03/27/12 10/29/12 03/20/12 05/29/12 08/22/12 10/23/12 03/20/12 05/23/12 08/21/12 10/23/12 03/20/12 05/23/12 08/21/12 10/23/12 385 +/- 124

200 502 +/- 141 227 +/- 116

186

187 297 +/- 133

184 1060 +/- 167 997 +/- 156 1150 +/- 175 1050 +/- 172

172

165

182

182

186

192

178

165

186

189

175

169

187

169

169

200 297 + 131

180

184

173

178

169

195 403 +/- 140 354 - 126

169

171

166

181

169

198 402 - 137 789 +/- 146

167

197 237 +/- 127

174

< 4.5

< 4.4

< 0.6

< 0.7 2.4 +/- 1.4 < 0.8 6.2 +/- 2.9 < 1.1 12.1 +/- 1.5

< 1.9 19.4 +/- 2.3

< 2.7 7.5 +/- 1.4

< 1.6 42.8 +/- 8.8

< 5.1

< 4.1

< 0.7

< 1.5

< 0.5

< 4.0

< 0.7 13.9 +/- 9.0 < 1.8

2.2

<4.5

7.2

2.2

1.9 2.6 +/- 0.5 0.9 +/- 0.4 1.3 +/- 0.6 1.3 +/- 0.6

< 0.6 9.9 +/- 3.9 7.0 +/- 1.3 80.0 +/- 4.1 41.5 +/- 2.2

< 5.0

< 0.9

< 1.1

< 0.8

< 3.8

< 0.7

< 3.7

< 0.7

< 1.0

< 0.5 3.7 t 2.1 < 0.4 13.8 +/- 1.4

ý< 1.9 11.8 +/- 1.5

< 1.7 18.3 +/- 2.1

< 1.0 B-2

TABLE B-1.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCIILITER +/- 2 SIGMA SITE MW-DN-1101 MW-DN-1101 MW-DN-1101 MW-DN-1101 MW-DN-110S MW-DN-110S MW-DN-110S MW-DN-110S MW-DN-111S MW-DN-111S MW-DN-111S MW-DN-111S MW-DN-1 121 MW-DN-1 121 MW-DN-1 121 MW-DN-1 121 MW-DN-1 12S MW-DN-1 12S MW-DN-1 12S MW-DN-1 12S MW-DN-1 131 MW-DN-1 131 MW-DN-1 131 MW-DN-1131 MW-DN-1 13S MW-DN-1 13S MW-DN-113S MW-DN-113S MW-DN-1 141 MW-DN-1 141 MW-DN-1 141 MW-DN-1 141 MW-DN-1 14S MW-DN-1 14S MW-DN-1 14S MW-DN-1 14S MW-DN-1 151 MW-DN-1 151 MW-DN-1 151 MW-DN-1 151 MW-DN-115S MW-DN-115S MW-DN-1 15S MW-DN-1 15S MW-DN-1 161 MW-DN-1 161 MW-DN-1 161 MW-DN-1 161 MW-DN-1 16S MW-DN-1 16S MW-DN-1 16S MW-DN-1 16S COLLECTION DATE 03/20/12 05/23/12 08/22/12 10/23/12 03/20/12 05/23/12 08/22/12 10/23/12 03/27/12 06/05/12 08/28/12 10/30/12 03/20/12 05/23/12 08/21/12 10/23/12 03/20/12 05/23/12 08/21/12 10/23/12 03/27/12 06/04/12 08128/12 10/29/12 03/27/12 06/04/12 08/28/12 10/29/12 03/26/12 05/30/12 08/21/12 10/29/12 03/26/12 05/30/12 08/21/12 10/29/12 03/26/12 05/30/12 08/28/12 10/29/12 03/26/12 05/30/12 08/28/12 10/29/12 03/20/12 05/23/12 08/22/12 10/23/12 03/20/12 05/23/12 08/22/12 10/23/12 H-3 SR-89 SR-90 GR-A (DIS)

GR-A (SUS)

GR-B (DIS) GR-B (SUS)

168

192 283 +/- 129 210 +/- 118

166

197

182

182 246 +/- 126 324 +/- 122 417 +/- 132 291 +/- 119 195 +/- 112 409 +/- 142 306 +/- 130 396 +/- 138

167

195

184

181

186

169

177

173

186

170

178

168 6430 +/- 689 7320 +/- 774 7300 +/- 773 6700 +/- 714 347 +/- 132 202 +/- 113

181 469 +/- 129 202 +/- 120 461 +/- 127 273 +/- 117 426 +/- 125

182 238 +/- 112

179

166 535 +/- 145 240 +/- 132 2060 +/- 256 739 t 142 364 +/- 124 373 +/- 141 537 +/- 142 551 +/- 146

<4.1

< 0.6

< 4.8

< 0.8

< 0.5

< 0.5 1.6 +/- 0.7

< 1.6 1.8 +/- 0.8 1.6 t 0.8 6.9 +/- 1.2

< 1.7

< 3.9

< 3.7 B-3

< 0.6

< 0.7 3.3 t 1.8 < 1.0 2.5 +/- 1.6 < 0.7 22.4 +/- 2.0

< 1.7 19.3 +/- 1.9

< 1.6

TABLE B-1.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION DATE H-3 SR-89 SR-90 GR-A (DIS)

GR-A (SUS)

GR-B (DIS) GR-B (SUS)

MW-DN-1 18S MW-DN-1 18S MW-DN-1 18S MW-DN-1 18S MW-DN-1191 MW-DN-1 191 MW-DN-1 191 MW-DN-1 191 MW-DN-1 19S MW-ON-119S MW-DN-1 19S MW-DN-1 19S MW-DN-1221 MW-DN-122S MW-DN-1241 MW-DN-1241 MW-DN-1241 MW-DN-1241 MW-DN-1241 MW-DN-124S MW-DN-124S MW-DN-124S MW-DN-124S MW-DN-125S MW-DN-125S MW-DN-125S MW-DN-125S MW-DN-126S MW-DN-126S MW-DN-126S MW-DN-126S MW-DN-127S MW-DN-127S MW-DN-127S MW-DN-127S MW-DN-134S MW-DN-135S MW-DN-136S MW-DN-137S MW-DN-140S MW-DN-141S MW-DN-MD-11 MW-DN-MD-11 03/21/12 05/29/12 08/27/12 10/24/12 03/21/12 05/29/12 08/28/12 10/24/12 03/21/12 05/29/12 08/28/12 10/24/12 06/06/12 06/06/12 03/28/12 06/05/12 06/05/12 Reanalys 08/29/12 10/30/12 03128/12 06/05/12 08/29/12 10/30/12 03/26/12 06/04/12 08/28/12 10/30/12 03/27/12 06104/12 08/29/12 10/29/12 03/28/12 05/30/12 08/29/12 10/29/12 11/21/12 11/21/12 11/21/12 11/21/12 12/21/12 12/21112 01/30/12 03/19/12 2950 +/- 344 2570 +/- 305 3070 +/- 358 1430 +/- 196

< 167

< 162 227 +/- 121

< 171

< 166

< 167

< 178

< 173

< 165

< 170

< 5.2

< 0.8

< 0.7

< 0.6 6.0 +/- 1.1

< 1.5 19.6 +/- 1.7

< 1.5

<4.5

< 0.8 1.9 +/- 1.0 < 0.6

<4.1

< 0.8 2.4 +/- 1.5 < 0.6 12.9 +/- 1.6

< 1.5 48400 +/- 4310 9120 +/- 955

<4.3

< 0.7 9210 +/- 966 53700 +/- 5350 51800 +/- 5210 38500 +/- 3890 56900 +/- 5720 < 3.9

< 0.6 16900 +/- 1730 14100 +/- 1440 307 +/- 126

< 2.0

< 2.6

< 0.5

< 0.4

< 0.4 13.8 +/- 1.7

< 1.6 20.4 +/- 2.1

< 1.4 7.3 +/- 1.7

< 1.4

< 170

< 177

< 167 1920 +/- 243 1470 +/- 202 1580 +/- 214 897 +/- 177

< 167

< 3.8

< 0.7

< 4.6

< 0.8 11.5 +/- 5.1 < 1.3 34.9 +/- 6.4

< 4.0 518 +/- 132

< 4.6

< 177

< 168 316 +/- 145 274 +/- 141 285 +/- 142

< 198 4030 +/- 447 1090 +/- 164 50500 +/- 5090 38800 +/- 3800

< 0.6

< 2.1

< 0.8 9.8 +/- 1.5

< 1.4 B-4

TABLE B-1.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 DATE DSP-105 DSP-105 DSP-105 DSP-105 DSP-106 DSP-106 DSP-106 DSP-106 DSP-107 DSP-107 DSP-107 DSP-107 DSP-108 DSP-108 DSP-108 DSP-108 DSP-123 DSP-123 DSP-123 DSP-123 DSP-125 DSP-126 DSP-131 DSP-132 DSP-154 DSP-1571 (M)

DSP-157S DSP-1591 (M)

DSP-159S MW-DN-101 I MW-DN-1011 MW-DN-1 01I MW-DN-1011 MW-DN-101S MW-DN-101S MW-DN-101S MW-DN-101S MW-DN-1021 03/26/12 05/30/12 08/27/12 10/24/12 03/26/12 05/30/12 08/27/12 10/24/12 03/21/12 05/29/12 08/27/12 10/24/12 03/21/12 05/29/12 08/27/12 10/24/12 03/21/12 05/29/12 08/21/12 10/24/12 05/22/12 06/06/12 06/05/12 06/05/12 06/06/12 06/06/12 06/06/12 06/06/12 06/06/12 03/21/12 05/29/12 08/22/12 10/24/12 03/21/12 05/29/12 08/22/12 10/24/12 06/04/12

<57 99 63 <6

<5

<20

<44

<2

< 42

< 83

< 4

< 5

< 37

< 39

< 4

< 39

< 80

< 5

< 4

< 15

< 13

< 1

< 2

< 36

< 79

< 4

<34

<35

<3

< 41

< 4

< 16

< 31

< 2

< 37

< 32

< 4

< 5

<43

<94

<5

<23

<19

<2

< 17

< 14

< 1

< 2

< 43

< 90

< 5

<51

<52

<5

<7

< 45

< 26

< 4

< 5

<18

<17

<2

< 40

< 37

< 4

< 38

< 30

< 3

< 39

< 42

< 3

< 4

< 35

< 28

< 3

< 4

<38

< 13

<3

<4

<51

< 35

<4

<6

< 33

< 50

< 4

< 5

< 42

< 52

< 5

< 33

< 36

< 3

< 29

< 100

< 3

< 37

< 60

< 3

< 4

<17

<15

<2

< 26

< 45

< 2

< 3

< 30

< 27

< 3

<40 53 +/-35 <4

<6

< 19

<39

<2

< 25

< 20

< 3

< 38

< 4

< 34

< 37

< 4

< 40

< 75

< 4

< 11

<5

< 12

<10

<7

<4

< 10

<9

<8

<4

<9

< 10

<5

<4

10

14

<9

<5

<6

<7

<8

<6

<7

< 11

< 10

<4

<7

<9

<4

<6

<7

< 10

<5

<7

<8

<9

< 11

<6

<13

<2

<4

<6

<9

<4

<10

<5

<9

<2

<3

<8

<4

<6

<4

<8

<2

<3

<4

<8

<5

<10

<2

<4

<2

<3

<4

<10

<5

<13

<5

<9

<2

<3

<4

<7

<3

<7

<3

<7

<4

<9

<3

<6

<4

<12

<5

<10

<5

<9

<4

<5

<3

<4

<3

<6

<2

<3

<5

<4

<7

<5

<10

<2

<4

<3

<6

<4

<8

<4

<8

<3

<8

<7

<2

<6

<5

<3

<2

<5

<4

<2

<5

<6

<3

<2

<5

<2

<5

<4

<5

<4

<3

<6

<5

<6

<4

<2

<3

<4

<5

<3

<4

<5

<4

< 10

<4

<8

<9

<3

<7

<6

<9

<3

<9

<8

<4

<3

<8

<9

<4

<8

<7

<6

<7

< 11

<7

<10

<9

<6

<7

<3

<5

<6

<9

<4

<5

<7

<8

12

<10

< 14

14

<10

<8

< 14

< 11

< 13

<8

14

<14

<7

<9

14

<13

12

<10

< 13

< 12

<13

<11

<13

<15

<13

< 15

< 11

<5

14

<10

15

<6

< 13

< 11

12

<15

<6

<7

<39

<2

<19

<4

<30

<4

<25

<3

<4

<25

<1

<2

<14

<4

<31

<3

<4

<23

<4

<5

<26

<1

<2

<15

<4

<5

<31

<4

<5

<31

<2

<15

<1

<2

<16

<4

<5

<31

<5

<38

<4

<5

<30

<2

<17

<4

<29

<4

<27

<4

<25

<3

<22

<4

<30

<4

<6

<36

<4

<5

<23

<4

<5

<29

<4

<3

<19

<3

<5

<22

<3

<4

<27

<2

<12

<2

<25

<3

<21

<5

<33

<2

<15

<2

<3

<27

<3

<4

<22

<4

<27

<3

<30

< 14

<6

< 12

<8

<5

<4

<8

<9

<7

<5

<9

< 10

<5

<4

< 10

13

<9

<6

<8

<7

<6

<8

< 10

<8

< 11

<5

<6

<4

<9

<7

< 11

<4

<8

< 10

TABLE B-1.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 DATE K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 MW-DN-102S 06/04/12 MW-DN-1031 06/06/12 MW-DN-103S 06/06/12 MW-DN-106S 05/21/12 MW-DN-107S 03/27/12 MW-DN-1081 03/20/12 MW-DN-1081 05/29/12 MW-DN-1081 08/22/12 MW-DN-1081 10/23/12 MW-DN-1091 05/23/12 MW-DN-109S 05/23/12 MW-DN-1 161 03/20/12 MW-DN-1 161 05/23/12 MW-DN-1 16S 03/20/12 MW-DN-1 16S 05/23/12 MW-DN-118S 03/21/12 MW-DN-1 18S 05/29/12 MW-DN-1 191 05/29/12 MW-DN-1 19S 05/29/12 MW-DN-122S 06/06/12 MW-DN-1241 06/05/12 MW-DN-1241 10/30/12 MW-DN-124S 06/05/12 MW-DN-124S 10/30/12 MW-DN-125S 06/04/12 MW-DN-126S 06/04/12 MW-DN-127S 05/30/12 SW-DN-1 131 6/4/2012 SW-DN-1 13S 6/4/2012 SW-DN-1 161 08/22/12 SW-DN-1 161 10/23/12 SW-DN-1 16S 08/22/12 SW-DN-1 16S 10/23/12 SW-DN-1 18S 08/27/12 SW-DN-1 18S 10/24/12 SW-DN-1221 6/6/2012 MW-DN-134S 11/21/12 MW-DN-135S 11/21/12

< 34

< 87

< 4

< 7

< 44

< 5

< 10

< 27

< 21

< 2

< 3

< 6

< 39

< 4

< 5

< 10

<49 111 +/-67 <6

<6

<9

<20

< 18

< 30

< 25

< 35

< 70

< 52

< 105

< 49

< 109

< 39

< 83

< 18

< 37

< 43

<46

< 18

< 19

< 38

< 41

<20

< 19

< 13

< 12

< 19

< 32

< 20

< 40

< 45

< 26

< 29

< 31

< 34

< 66

< 30

< 32

< 31

< 32

< 50

< 78

< 36

< 92

< 20

< 18

< 29

< 63

<39

< 34

< 37

< 73

< 35

< 69

< 37

< 31

< 39

< 57

<31

<54

< 39

< 69

< 45

< 87

< 49

< 24

< 40

< 27

<2

<5

<3

<7

<3

<4

<8

<5

<7

<11

<4

<8

<3

<4

<8

<2

<4

<5

<10

<2

<5

<4

<9

<2

<5

<1

<3

<2

<5

<2

<5

<10

<3

<6

<3

<4

<9

<4

<3

<9

<4

<9

<3

<5

<7

<3

<8

<2

<5

<2

<3

<6

<4

<5

<9

<3

<4

<10

<3

<4

<7

<4

<8

<4

<9

<3

<8

<4

<9

<5

<10

<3

<4

<11

<3

<4

<9

<3

<5

<3

<5

<2

<3

<4

<7

<5

<4

<2

<4

<2

<4

<2

<1

<2

<5

<3

<4

<3

<4

<2

<3

<4

<5

<3

<4

<3

<8

<9

<6

<8

< 11

<4

<6

<7

< 15

<9

<8

<4

<9

<4

<7

<5

<2

<4

<8

<6

<7

<9

<6

<8

<4

<5

<7

<8

<6

<8

<9

<6

<7

<8

<6

<4

<6

<5

<8

<4

<6

<4

<7

<6

<9

<3

<4

<3

<5

<4

<6

<7

<13

<5

<8

<4

<7

<2

<4

<6

<10

<2

<3

<4

<6

<2

<4

<1

<3

<2

<4

<2

<4

<5

<8

<3

<5

<4

<7

<4

<5

<4

<8

<5

<7

<4

<6

<2

<4

<5

<4

<8

<4

<8

<4

<6

<5

<7

<5

<8

<4

<7

<4

<7

<5

<7

<5

<9

<4

<7

<15

14

<8

<14

< 11

<7

< 15

<12

< 15

<14

< 11

<6

< 14

<6

< 11

<6

<7

< 11

<14

10

<13

<14

<12

14

<14

<9

< 11

<14

< 12

12

< 13

<12

14

< 15

170

< 157

<3

<4

<2

<3

<5

<2

<3

<6

<4

<3

<2

<4

<2

<4

<2

<1

<2

<4

<2

<3

<4

<3

<2

<3

<4

<3

<4

<5

<3

<4

<3

<4

<6

<2

<3

<4

<7

<5

<4

<2

<5

<2

<4

<2

<1

<2

<5

<3

<4

<3

<2

<3

<4

<3

<4

<5

<3

28

< 34

16

32

< 31

14

26

< 23

< 42

< 33

< 26

< 13

<34

13

< 26

<15

< 12

19

20

29

<15

< 27

31

< 29

< 27

27

18

23

30

< 25

24

26

< 27

< 24

27

30

< 143

< 122

<6

<8

<7

<11

<8

<5

<8

<6

< 14

<9

<4

<9

<5

<8

<4

<6

<8

<4

<8

<7

<6

<7

<6

<7

<9

<8

<7

<9

<7

<9

< 37

< 41

TABLE B-I.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 DATE K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 MW-DN-1 36S MW-DN-137S MW-DN-140S MW-DN-141S 11/21/12 11/21/12 12/21/12 12/21/12

< 39

< 40

16

< 16

<69

<3

<21

<3 67 +/- 37 < 2

<48

<2

<4

<10

<3

<6

<5

<8

<164

<3

<4

<8

<2

<5

<4

<7

<162

<3

<2

<4

<2

<3

<2

<3

<13

<1

<2

<5

<2

<4

<2

<4

<14

<2

130

< 112

< 20

< 22

< 43

< 37

<6

<7

TABLE B-I.3 SITE MW-DN-107S MW-DN-1 241 CONCENTRATIONS OF HARD TO DETECTS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION Am-241 Cm-242 Cm-243/244 Pu-238 Pu-239/240 U-234 U-235 U

DATE 03/27/12

< 0.2

< 0.08

< 0.10

< 0.18

< 0.13 0.9 +/- 0.3

< 0.12 0.66 06/05/12

< 0.1

< 0.07

< 0.02

< 0.07

< 0.05

< 0.1

< 0.02

< 0.07

-238 Fe-

+/- 0.25

< 113

< 41 55 Ni-63

<4.9

< 2.9 oc

TABLE B-II.1 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION DATE H-3 SW-DN-101 SW-DN-101 SW-DN-101 SW-DN-101 SW-DN-102 SW-DN-102 SW-DN-102 SW-DN-102 SW-DN-102 SW-DN-102 SW-DN-103 SW-DN-103 SW-DN-103 SW-DN-103 SW-DN-104 SW-DN-104 SW-DN-104 SW-DN-104 SW-DN-105 SW-DN-105 SW-DN-105 SW-DN-105 SW-DN-105 SW-DN-106 SW-DN-106 SW-DN-106 SW-DN-106 03/28/12 05/21/12 08/29/12 10/31/12 03/28/12 05/21/12 Reanalysis 05/21/12 Reanalysis 05/21/12 Reanalysis 08/29/12 10/31/12 03/28/12 05/21/12 08/29/12 10/31/12 03/28/12 05/21/12 08/29/12 10/31/12 03128/12 05/21/12 Reanalysis 05/21/12 Reanalysis 08129112 10/31/12 03/28/12 05/21/12 08/29/12 10/31/12

167 247 +/- 131

180 5490 +/- 594 489 + 134 869 + 164 803 + 145 821 +/- 145

< 182 3240 +/- 372 569 +/- 138 750 +/- 145

182 2940 +/- 343 564 +/- 137 790 +/- 164

182 3030 +/- 352 468 +/- 132 811 +/- 162 837 +/- 148

< 181 3270 +/- 375 783 +/- 147 773 +/- 158

< 158 2640 +/- 313 B-9

TABLE B-II.2 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE SW-DN-101 SW-DN-1 02 SW-DN-103 SW-DN-1 04 SW-DN-105 SW-DN-1 06 COLLECTION Be-7 DATE 05/21/12

< 37 05/21/12

< 36 05/21/12

< 45 05/21/12

< 42 05/21/12

< 40 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140

< 38

< 80

< 35 84

< 40

72

<4

<5

+44

<4

<5

<4

<9

< 11

<9

< 10

<8

<3

<4

<5

<4

<8

<6

<9

<8

<7

<9

<5

<4

<5

<4

<5

<8

<6

<9

<8

<9

<7

14

<14

<15

15

14

14

<4

<5

<4

< 34

30

32

< 26

< 31

< 30

<9

< 10

< 11

<9 0

TABLE B-Ill.1 CONCENTRATIONS OF TRITIUM IN PRECIPITATION WATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 DATE FW-1 05/23/12

< 191 FW-10 05/23/12

< 199 FW-11 05/30/12

< 168 FW-12 05/30/12

< 167 B-11

SVPLTR 13-0016, Annual Radiological Environmental Operating Report

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SVPLTR 13-0016, Annual Radiological Environmental Operating Report

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