ML073300645

Groundwater Monitoring Report - Plant Vogtle Landfills #3, Solid Waste Permit Nos. 017-007D(L)(I), Burke County, Georgia, September 2007

ML073300645
Person / Time
Site:	Vogtle
Issue date:	09/14/2007
From:	Godfrey J Southern Nuclear Operating Co
To:	Sean Mcmanus Office of Nuclear Reactor Regulation, State of GA, Environmental Protection Div
References
017-007D(L)(I), EV-07-1701
Download: ML073300645 (212)

Text

~J0l1' Southern Nuclear Operating Company, Inc.

42 illverness Cellter Parkway Sirmillgilam, Alabama 35242

\:

SOUTHERN COMPANY Energy to Serve Your World'"

File: E.03.41 log: EV-07-1701 September 14, 2007 FEDERAL EXPRESS Vogtle Electric Generating Plant landfill #3 Solid Waste Permit No. 017-007D(l)(I)

Mr. Steve McManus Program Manager - Solid Waste Management Program Georgia Environmental Protection Division 4244 International Parkway, Suite 104 Atlanta, GA 30354

Dear Mr. McManus:

Pursuant to EPD Solid Waste Rule 391-3-4-.14, and in accordance with the Plant Vogtle landfill #3 approved landfill groundwater monitoring program, Southern Nuclear is submitting the June, 2007 semi-annual groundwater monitoring report. This report was prepared for Southern Nuclear by the Dextra Group and was completed in September, 2007. Statistically significant increases over background were indicated for several analyzed parameters. In accordance with Rule 391-3-4, Southern Nuclear will place a notice in the landfill operating record within 14 days of submittal of this report. The notice will indicate which constituents have shown statistically higher concentrations compared to the background wells.

Mercury and lead were detected in concentrations above their Mel in well GWA-7 during this monitoring event. These increases are attributed to turbidity in the sample which was elevated in this monitoring well. As such, analysis for these parameters will be reported on filtered and unfiltered samples during the next sampling event. Based on previous detections of mercury in several wells during Appendix II sampling, Southern Nuclear will continue to perform analysis for mercury in all landfill #3 wells during the routine groundwater sampling events.

/'

EV-07-1701 Page 2 Georgia Environmental Protection Division Mr. Steve McManus Please find enclosed the June, 2007 landfill groundwater monitoring report for this sampling period. If you have any questions regarding this information, please contact Mickey Perry at (205) 992-6994.

'51uluffl/

Sincerely, /(

J. M. Godfrey I~

Manager - Environmental Affairs JMG/MEP:ahl Enclosure

EV-07-1701 Page 3 Georgia Environmental Protection Division Mr. Steve McManus cc: Mr. Jeff Cown (w/o)

Mr. Michael Kemp (w/o)

Mr. Earl Hinkle (w/o)

Mr. AI Frazer (East Central Division (w/o)

Mr. Kurt Batsell (Dextra) (w/o)

EV-07-1701 Page 4 Georgia Environmental Protection Division Mr. Steve McManus bc: T. E. Tynan (w/o)

J. G. Aufdenkampe (w/o)

N. D. Dennis (w/o)

C. L. Buck (w/o)

S. A. Varnum (w/o)

J. A. Joyner (w/o)

D. G. Goodwin (Return Receipt) (w/o)

SNC Document Management -RType CVA02.003 (Return Receipt)

September 12, 2007 Dex t ra Mr. Mickey Perry Southern Nuclear Operating Company, Inc.

40 Inverness Center Parkway P.o. Box 1295 Birmingham, Alabama 35201-1295

Subject:

Georgia Power Plant Vogde Private Landfill #3 Permit Number 017-007D(L)(I)

Burke County, Georgia Groundwater Monitoring Report - June 2007

Dear Mr. Perry:

Please fmd the enclosed Groundwater Monitoring Report for the referenced facility.

This report is submitted in accordance with the approved Groundwater Monitoring Plan and presents the results of routine semi-annual monitoring conducted at the landfill in June 2007,*

. If you have any questions, please contact me at 770-578-9696. We appreciate the opportunity to assist SNC with this project.

Ai7Jii Very truly yours, Kurt R Batsd, PE Principal Cc: Mr, Don Goodwin, Plant Vogde The Dextra Group, Inc. Environmental Busint!! Soluhom 1205 Johnson Ferry Road, Suite 136-446 (/70) 578-9696 Phone Marietta, GA 30068 (/70) 321-5345 .Fax

GROUNDWATER MONITORING REPORT PLANT VOGTLE LANDFILL #3 SOLID WASTE PERMIT Nos. 017-007D(L)(I)

BURKE COUNTY, GEORGIA SEPTEMBER 2007 PREPARED FOR:

Southern Nuclear Operating Company, Inc.

40 Inverness Center Parkway Birmingham, Alabama 35201 PREPARED By:

Kurt R. Batsel, P.E.

Georgia License Number 16594 The Dextra Group, Inc.

1205 Johnson Ferry Road Dextra Suite #136-446 Marietta, Georgia 30068

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Plant Vogtle Landfill #3 Groundwater Monitoring Report, September 2007 Solid Waste Permit No. 017-007D(L)(I)

Certification of Compliance or Non-Compliance Sampling and analysis has been conducted in accordance with the Georgia Environmental Protection Division's "Manual for Groundwater Monitoring" dated September 1991 and the Plant Vogtle Ground Water Monitoring Plan. Based on the results of this report, I, Mike Godfrey, certify that Plant Hatch is in compliance with the applicable rules regardin groundwater quality at a solid waste facility.

ike Godfrey Manager - Environmental ffairs Southern Nuclear Operating Company, Inc.

Groundwater Scientist Certification I, Kurt R. Batsel, certify that I am a qualified groundwater scientist demonstrated by a Georgia state registered professional engineer certification. I have sufficient training and experience in groundwater hydrology and related fields to make sound professional judgments regarding groundwater monitoring and contaminant fate and transport. I further certify that the data in this report has been prepared by myself or a subordinate working under my direction.

Kurt R. Batsel, PE The Dextra Group, Inc.

TABLE

._----_.__..._.-._.__._.._- ...__..._----_._._. __ OF CONTENTS

....._._._---.-._-.-._.._..__._-

1 - Introduction 1 2 - Monitoring Well Network 1 3 - Groundwater Flow Rate and Directional Data 2 3.1 Geology/Hydrogeology 3.2 Groundwater Elevations and Gradients 4 - Sampling Procedures and Parameter Analyses 3 4.1 Procedures and Field Measurements 4.2 Parameter Analyses 5 - Groundwater Quality Evaluation 4 5.1 Detected Parameters 5.2 Statistical Analyses 6 - Conclusions 5 In Order Following Page 6 Tables 1 - Groundwater Elevations and Monitoring Well Construction Details 2 - Groundwater Sampling Field Measurements 3 - Constituents for Detection Monitoring 4 - Summary of Detected Parameters Figures 1 - Groundwater Contour Elevation Map, June 4-5, 2007 Appendices A - Hydraulic Gradient Calculation Sheets B - Laboratory Analytical Reports C - Statistical Analyses

1- Introduction This report presents the results of groundwater sampling conducted in June 2007 at private solid waste Landfill #3 operated by Southern Nuclear Operating Company, Inc. (SNC) at Plant Vogtle in Waynesboro, Georgia. Groundwater monitoring was initiated in 2002 in accordance with the approved Groundwater Monitoring Plan for the landfill. The landfill is operated under Solid Waste Permit #017-007D(L)(I) and used for disposal of non-putrescible, non-liquid office and solid waste as well as construction/demolition debris such as asbestos insulation, wooden pallets and concrete.

Landfill #3, permitted in 1987, has been utilized solely for construction and demolition debris disposal since 1992.

Sampling, analyses and data evaluation were conducted in accordance with the rules of the Georgia Department of Natural Resources Environmental Protection Division (EPD), Chapter 391-3-4, the September 1991 "Manual for Groundwater Monitoring" and the approved Groundwater Monitoring Plan for the landfill.

The findings of the initial four sampling events, conducted fro~ August 2002 through December 2002, and subsequent semi-annual sampling events are presented in reports previously submitted to the EPD. This report presents the results of the June 2007 semi-annual monitoring event.

Subsequent reports will be prepared upon completion of semi-annual monitoring events as scheduled in the Groundwater Monitoring Plan.

2 - Monitoring Well Network The groundwater monitoring well network consists of nine permanent monitoring wells located along the perimeter of the waste management unit boundary of Landfill #3 (Figure 1). As shown in the figure, the wells are located outside of, but as close as practical to, the waste disposal areas. The wells are screened within the uppermost water-producing zones underlying the landfill, which occur from approximately 30 to 80 feet below land surface at Landfill #3.

The nine permanent groundwater monitoring wells at Landfill #3 were installed in September 2001, July 2002 and June 2005. The well construction details are presented in Table 1. As noted in the table, original well GWC-16 been dry during groundwater monitoring events following its installation; therefore monitoring well GWC-16 was replaced by GWB-16 in October 2006. Wells GWA-7/MW-7 and GWA-15/MW-15 are located at the south and southwest portions of the landfill boundary. Wells GWC-5/MW-5, GWC-13/MW-13 and GWC-14/MW-14 are located along the eastern portion of the landfill boundary, and wells GWB-6/MW-6 and GWB-16/MW-16 are located along the northern landfill boundary. Wells GWC-17/MW-17 and GWC-18/MW-18 were recently installed at the southeast comer of the landfill as part of the contamination assessment program at Landfill #3. Well GWA-7 /MW-7 was initially treated as a compliance (downgradient) well for Landfill #3. However, due to review of water level measurements showing this well to be side gradient from the active fill area of the landfill, well GWA-7/MW-7 was evaluated as a background well in the monitoring reports from the June 2003 and December 2003 sampling events. Based on the consistent detection of trichlorofluoromethane and the June 2004 detection of trichloroethene in Well GWA-7/MW-7, it was decided to return to evaluating this well as a compliance well. This approach was used in this monitoring report. The most appropriate designation for this well will continue to be evaluated in light of future monitoring results. For this report, well GWA-15/MW-15 is the designated background well, and the remaining wells are designated compliance wells. The wells will'be referred to as GWC-5, GWB-6, GWA-7, GWC-13, GWC-14, GWA-15, GWB-16, GWC-17 and GWC-18 in this report in accordance with the EPD's well identification guidelines.

Two stonnwater secliment ponds were completed in 2004 in accordance with the approved Design and Operational Plan for the Vogtle Landfill #3. As there was no discharge from either pond at the time of the June 2007 groundwater monitoring event, no surface water samples were collected from the surface water monitoring stations located at the pond outfalls.

3 - Groundwater Flow Rate and Directional Data 3.1 Geology/Hydrogeology The geology of the Plant Vogtle site consists of seclimentary deposits within the Coastal Plain physiographic province of Georgia. These secliments consist of unconsolidated sands, silts and days comprised of marine and non-marine fluvial deposits. Marls and limestone were also encountered at depth in deep borings completed at the landfill. The marls encountered during drilling were components of the Irwinton Sand member. Either all or parts of the Barnwell Group members (except the Utley Limestone member) were also encountered in the other borings conducted at the landfill. Underlying the Barnwell Group is the Lisbon Fonnation with its uppennost unit, the Blue Bluff Marl, located immediately under the Utley Limestone. This marl layer, approximately 70 feet thick, is a near-impenneable layer that effectively confIDes the Tertiary and Cretaceous aquifers, the two confIDed aquifers beneath the Plant site.

The occurrence of groundwater underlying the landfill appears in confined, semi-confined, unconfined, and perched hydrogeologic units. Groundwater is found primarily in sands, silty sands, dayey sands and marl limestone interfaces. The main difference between boring/well water production characteristics and aquifer confining characteristics appears to be the thickness of the water-producing zone, the grain size of the sand component, the sand/day ratio and the characteristics of the marl/limestone interface.

Groundwater may also exist in an unconfined water table aquifer in the Barnwell sands and limestone that overlie the marL The water table aquifer at the site is on an interfluvial ridge, or a topographically high area in which the groundwater in the water table discharges along streams that surround the topographic high. The streams eventually discharge to the Savannah River.

3.2 Groundwater Elevations and Gradients During well installation, the occurrence of groundwater was determined by collecting continuous split spoon samples beginning approximately five feet above th'e location of expected groundwater-producing zones. At both landfill, groundwater was generally found in water producing zones less than one foot thick and was observed to be under semi-confined or confIDed conditions.

Upon completion of all drilling activities, measuring points were located on the tops of the well casings and surveyed relative to mean sea level (msl). During each sampling event, depth to water measurements were recorded in the wells from the surveyed elevations using an electronic water-level indicator. The water level measurements were then subtracted from the appropriate measuring point elevations to determine groundwater elevations in the wells.

Hydraulic conductivity (K) in the wells was measured on September 26, 2001. The values ranged from 5.634 x 10-4 em/sec in GWB-6 to 3.064 x 10-2 em/sec in GWA-2.

Depth to water measurements and groundwater elevations for the wells at Landfill #3 are presented in Table 1. Groundwater elevations measured to date indicate that the groundwater elevation, or hydraulic 'head,' is greatest beneath the center area of the landfill, and decreases to the southeast, to 2

the northeast and to the west-southwest beneath the landfill. This mounding effect is believed to be the result of natural inftltration in the sandy soils within the historic topographically high area in the center of the landftll. This topographically high area, which encompasses a broad area within the landfill, is a natural site feature that was present prior to any landftlling operations. Figure 1 shows the topography of the landftll.

As discussed previously, the water-bearing stratigraphy beneath Landftll #3 is composed of individual saturated sand units within a clayey/marl matrix. These units mayor may not be interconnected. As such, groundwater elevations in the monitoring wells may reflect head in multiple perched layers and may not represent groundwater 'flow' direction beneath the landfill. Figure 2 presents a map depicting the saturated head contours measured on June 5, 2007.

Monitoring well GWA-15 is the well most representative of background water quality at the site because of the distance between the well and the current landfilled area, and the location of the area of relatively higher head located between the well and the current landfilled area on the eastern portion of the site. This well is therefore used as a background well to evaluate groundwater quality at the landfill. Well GWA-7 is now evaluated as a downgradient well based on review of the groundwater elevation and chemical analysis data collected since 2002.

The hydraulic gradient was calculated using a three-point problem from groundwater elevations in the monitoring wells as follows for each main direction of head difference:

Southwest: GWB-6, GWA-7 and GWA-15; Northeast: GWB-16, GWB-6 and GWC-5; and Southeast: GWC-13, GWA-7 and GWC-14.

The calculated hydraulic gradients are presented on the contour map (Figure 1). The calculations used in determining the gradients are provided in Appendix A. For the June 2007 event, the southwest gradient was 0.009, the northeast gradient was 0.16, and the southeast gradient was 0.12. The southwest gradient has typically been 0.01, with a maximum of 0.02 Oune 2003), reflecting the consistently flattest gradient across the landfill. The northeast trending gradient has ranged from a minimum of 0.08 (October and December 2002, June 2004) to a maximum of 0.17 Oune 2003). 'The southeast gradient has ranged from a low of 0.06 (December 2002) to a maximum of 0.16 Oune 2003). For this monitoring event, the steepest gradient was observed in the northeast flow component.

4 - Sampling Procedures and Parameter Analyses 4.1 Procedures and Field Measurements Prior to sample collection during each sampling event, depth to water measurements are recorded in each well from the surveyed elevations using an electronic water level indicator. The water level indicator is decontaminated using a potable water and Alconox wash and a distilled water rinse between use at each well. The water level measurements are then subtracted from the appropriate measuring point elevations to determine the groundwater elevations in the wells.

Groundwater samples were collected from all monitoring wells after the wells were properly purged according to the EPA document entitled Low-Flow Purging & Sampling of Groundwater Monitoring Wells (Bulletin QAD023)". The wells were purged and sampled using QED SamplePro pumps equipped with Teflon bladders. Purge rates were matched to the recovery rates of the wells, verified by periodic depth to water measurements to determine draw-down during purging. Purging was conducted until at least three consecutive stable readings of pH, conductivity, and turbidity were 3

recorded. Groundwater samples were then collected directly into pre-preserved sample containers supplied by the laboratory. Final measurements of pH, conductivity, and turbidity were performed to verify that these parameters remained stable during sampling. J:he well water temperature was added as a field parameter monitored during the purging of the wells as of the June 2007 groundwater monitoring event. All field instruments were calibrated in the field daily prior to use and at the conclusion of each sampling event. The field measurements are provided in Table 2.

After each sample was collected, the SamplePro pumps and air lines were decontaminated according to the following protocol:

• The pump and air line were placed on clean plastic;

• The pump was disassembled and the bladder was removed;

• The pump was sprayed with a potable water and Alconox solution, followed with a distilled water rinse until all soap residue was removed;

• A new pump bladder was then installed in the pump prior to reassembly; and

• The pump air line was placed in a clean plastic bag between use at each well.

4.2 Parameter AnalYses In accordance with the approved Groundwater Monitoring Plan, the groundwater samples and field and laboratory quality assurance/quality control (QA/QC) samples were analyzed for the Chapter 391-3-4 Appendix I list of parameters, which consists of total metals and volatile organic compounds (Table 5). The field QA/QC samples consisted of duplicate samples, trip blanks and equipment blanks. Metals analyses were conducted using EPA Methods 6010B/7841, and VOCs analyses were conducted using EPA Methods 6010B/8260B and 504.1 to provide sufficiently sensitive quantitation limits for comparison with maximum contaminant limits. Advanced Chemistry Labs, Inc., Atlanta, Georgia performed the laboratory analyses. The complete laboratory analytical reports, which include field and laboratory QA/QC results and chain-of-custody forms, are provided in Appendix B.

Samples were also collected for the Chapter 391-3-4 Appendix 'II parameter mercury in all wells due to this parameter's detection in previous assessment monitoring conducted at the landfill.

5 - Groundwater Quality Evaluation 5.1 Detected Parameters Table 4 presents a summary of all analyzed parameters detected above the laboratory method reporting limits. Barium was detected at concentrations below the MCL in wells GWC-5, GWA-7, in the replicate sample well GWA-7 and GWC-13. Nickel and Zinc were detected in wells GWA-5, GWB-6, GWA-7, in the replicate sample well GWA-7, GWC-13 and GWA-15; there is no MCL for nickel or zinc. In the compliance well GWA-7 and in the replicate sample well GWA-7 chromium, beryllium and vanadium were detected at low levels, all were below applicable MCLs. In the compliance well GWA-7 and in the replicate sample well GWA-7 mercury and lead were detected at concentrations greater then the respective MCLs.

In the compliance well GWA-7 the VOC trichlorofluoromethane was detected at 115 ug/l, at 109 ug/l in the replicate sample well GWA-7 ; there is no MCL for trichlorofluoromethane. In the compliance well GWC-13, l,l-dichloroethane, chlorobenzene, cis-l,2-dichloroethene, and'trichlorofluoromethane were detected at low levels. All VOC concentrations in GWC-13 were below applicable MCLs.

No parameters were detected in any of the field or laboratory QA/QC samples, and the laboratory QA/QC checks were within acceptable limits.

4

5.2 StatisticalAnalYses In accordance with the approved Groundwater Monitoring Plan, statistical analyses were conducted for each constituent detected in the compliance well samples for this sampling event. The analyses were conducted to help identify any significant increase in constituent concentrations in downgradient, or compliance, well samples over samples representative of background water quality.

The analyses were conducted consistent with U.S. EPA recommended methods as detailed in the guidance document "Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities -

Interim Final Guidelines" (1989) and the corresponding Addendum (1992).

The following methodology was used to evaluate the data:

• The distribution of the data was first evaluated for normality using either the Shapiro-Wilkes Test (for parameters with less than 50 samples) or the Shapiro-Francia Test (for parameters with greater than 50 samples) as recommended in the 1992 EPA guidance. The tests indicate that the concentrations of all detected parameters do not follow normal distributions.

• For the well data sets, the Kroskal-Wallis non-parametric analysis of variance method was used to compare the concentrations of individual parameters in each compliance well to the concentrations of these parameters in the background well. This method is recommended by the 1992 EPA guidance for non-normal sample sets that have between 15% and 90% non-detects.

The detailed statistical analyses are provided in Appendix C and the results are summarized below.

At Landfill #3, statistical analysis was performed for the twelve detected parameters barium, nickel, zinc, mercury, chromium, beryllium, lead, vanadium, 1,1-dichlo.roethane, chlorobenzene, cis-1,2-dichloroethene and trichlorofluoromethane. Compared to background well GWA-15/MW-15, the analyses indicate statistically significant higher concentrations of the following parameters:

• Barium, 1,1-dichloroethane, cis-1,2-dichloroethene chlorobenzene and trichlorofluoromethane in the GWC-13 well samples,

• Barium, 1,1-dichloroethane, and cis-1,2-dichloroethene in the GWC-14 well samples, and

• Trichloroflouromethane in the GWA-7/MW-7 well samples.

It should be noted that the statistical analyses data sets include all sampling events to date for all wells. As a result, statistically higher concentrations of detected parameters in a well are determined based on all reported concentrations (including consideration of non-detects) from all sampling events for that well. If a concentration is lower in the current event for a well, the complete data set for the well may still indicate a statistically higher concentration over the background well data set considering all sampling events to date. For example, although there was no sample available for GWC-14 for this event, the statistical analyses indicate significantly higher concentrations of barium, 1,1-dichloroethane, and cis-1,2-dichloroethene for the GWC-14 historical sample data set.

6 - Conclusions Since a statistically significant increase over background is indicated for several analyzed parameters in wells GWC-13 and GWC-14 at Landfill #3, SNC will place a notice in the operating record within 14 days of submittal of this report as required by Chapter 391-3-4. The notice will indicate which constituents have shown statistically significant higher concentrations compared to the background wells.

5

The exceedances in well GWA-7 are attributed to elevated turbidity in the sample. SNC proposes to perform f1ltered versus unf1ltered sampling for metals in GWA-7 during the next semi-annual event to conftrm that the exceedances are due to high turbidity in that well.

Based on prior detections of the Appendix II parameter mercury in Landfill #3 wells, SNC will continue to perform analysis for mercury in all Landfill #3 wells during the regular semi-annual sampling events.

6

TABLES Table 1 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Elevations and Monitoring Well Construction Details Total Boring Total Well Riser Groundwater Measuring Point Elevation Ground Surface Elevation Depth to Water Depth Depth Height Screened Interval Elevation WelllD Date (feet, msl) (feet, msl) (feet, topvc) (feet, bls) (feet, topvc) (feet) (feet, msl) (feet, msl)

GWC-5/MW-5 9/2612001 251.96 249.11 48.65 67 56.85 2.85 195.11 to 205.11 203.31 7/29/2002 50.21 201.75 9/9/2002 50.43 201.53 10/21/2002 49.26 202.70 12/3/2002 49.26 202.70 6/24/2003 44.60 207.36 12/16/2003 47.55 204.41 6/15/2004 47.76 204.20 12/28/2004 49.13 202.83 6/13/2005 45.94 206.02 12/5/2005 48.05 203.91 6/5/2006 47.85 204.11 12/4/2006 49.85 202.11 6/5/2007 45.22 206.74 GWB-6/MW-6 9/26/2001 278.87 276.45 47.47 67 64.42 2.42 214.45 to 224.45 231.40 7/29/2002 48.52 230.35 9/9/2002 48.55 230.32 10/21/2002 49.21 229.66 12/3/2002 48.86 230.01 6/24/2003 46.92 231.95 12116/2003 46.30 232.57 6/15/2004 46.49 232.38 12/28/2004 47.22 231.65 6/13/2005 47.84 231.03 12/5/2005 47.20 231.67 6/5/2006 47.38 231.49 12/4/2006 47.69 - 231.18 6/5/2007 48.93 229.94 GWA-7/MW-7 9/26/2001 261.33 259.39 31.11 50 41.94 1.94 219.39 to 229.39 230.22 7/29/2002 33.16 228.17 9/9/2002 33.25 228.08 10/21/2002 33.20 228.13 12/3/2002 32.94 228.39 6/24/2003 27.51 233.82 12116/2003 30.59 230.74 6/15/2004 30.87 230.46 12128/2004 32.33 229.00 6/13/2005 30.64 230.69 12/5/2005 31.60 229.73 6/5/2006 31.74 229.59 12/4/2006 32.84 228.49 6/4/2007 32.95 228.38 Page 1 of3

Table 1 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Elevations and Monitoring Well Construction Details Total Boring Total Well Riser Groundwater Measuring Point Elevation Ground Surface Elevation Depth to Water Depth Depth Height Screened Interval Elevation WelllD Date (feet, msl) (feet, msl) (feet, topvc) (feet, bls) (feet, topvc) (feet) (feet, msl) (feet, msl)

GWC-13/MW-13 7/29/2002 273.08 270.99 40.92 50 50.09 2.09 222.99 to 232.99 232.16 9/9/2002 41.00 232.08 10/21/2002 40.94 232.14 12/3/2002 4D.48 232.60 6/24/2003 36.90 236.18 12/16/2003 39.17 233.91 6/15/2004 39.59 233.49 12/28/2004 40.59 232.49 6/1312005 38.76 234.32 12/5/2005 39.93 233.15 6/5/2006 39.97 233.11 12/4/2006 40.93 232.15 6/4/2007 40.39 232.69 GWC-14/MW-14 7/29/2002 262.88 260.66 40.05 55 53.22 2.22 209.66 to 219.66 222.83 9/9/2002 42.31 220.57 10/21/2002 42.79 220.09 1213/2002 42.35 220.53 6/24/2003 44.29 218.59 12/16/2003 51.52 211.36 6/15/2004 52.11 210.77 12/28/2004 52.66 210.22 6/13/2005 51.66 211.22 12/5/2005 52.56 210.32 6/5/2006 53.03 209.85 12/4/2006 52.91 209.97 6/5/2007 53.00 - - 209."88 GWA-15/MW-15 7/29/2002 268.15 265.34 45.94 55 55.81 2.81 212.34 to 222.34 222.21 9/9/2002 46.05 222.10 10/21/2002 46.19 221.96 12/3/2002 46.23 221.92 6/24/2003 41.76 226.39 12/16/2003 43.29 224.86 6/15/2004 43.24 224.91 12128/2004 44.68 223.47 6/13/2005 40.1 228.05 12/5/2005 47.39 220.76 6/5/2006 44.32 223.83 12/4/2006 45.03 223.12 6/4/2007 45.22 222.93 Page 2 of 3

Table 1 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Elevations and Monitoring Well Construction Details Total Boring Total Well Riser Groundwater Measuring Point Elevation Ground Surface Elevation Depth to Water Depth Depth Height Screened Interval Elevation WelilD Date (feet, msl) (feet, msl) (feet, topvc) (feet, bls) (feet, topvc) (feet) (feet, msl) (feet, msl)

GWB-16/MW-16 7/29/2002 256.95 254.57 DRY 65 55.36 2.36 201.57 to 211.57 DRY 9/9/2002 DRY DRY 10121/2002 DRY DRY 12/312002 DRY DRY 6124/2003 DRY DRY 12/16/2003 DRY DRY 611512004 DRY DRY 12/26/2004 DRY DRY 611312005 DRY DRY 12/5/2005 DRY DRY 61512006 DRY DRY 1214/2006 Abandoned Abandoned 61512007 GWB-16/MW-16R 12/4/2006 237.59 235.51 77.45 60.60 60.60 3.00 156.79 to 166.79 160.14 6/5/2007 79.05 156.54 GWC-17/MW-17 6/13/2005 222.64 220.26 72.62 65 62.00 3.00 141.26 to 151.26 149.62 12/5/2005 72.6 150.04 6/5/2006 72.61 150.03 12/4/2006 72.65 149.99 6/5/2007 61.2 141.44 GWC-16/MW-16 6/13/2005 227.54 225.03 77.05 60 79.00 3.00 149.03 to 159.03 150.49 12/5/2005 DRY DRY 61512006 DRY DRY 1214/2006- - DRY*' - DRY 61512007 DRY DRY Notes:

Ground surface measured at survey bolt set in concrete pad at base of protective casing.

=

msl mean sea level; topvc measured from top of pvc riser; bls below land surface Page 3 of 3

o Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'1 Temperature Turbidity'2 Purged Odor Color Comments GWC-5/MW-5 9/2612001 5.11 47.5 28.6 6.0 none cloudy Well development only 7/29/2002 5.41 24.4 2.83 1.75 none none 9/912002 8.13 365 4.11 2.0 none none 10/21/2002 -- -- -- -- -- --

12/312002 5.94 117 7.8 2.0 none none 6/24/2003 5.18 29 3.5 6.0 none none 12/16/2003 6.27 210 79.7 3.0 none cloudy Split with GAEPD 6/1612004 5.94 40.7 16.5 2.0 none none 12/28/2004 4.96 30 7.33 2.3 none none 6/1312005 5.86 580 6.2 3.5 none none 12/6/2005 5.48 548 6.03 2.5 none none 6/512006 6.38 550 2.23 1.5 none none 12/4/2006 4.50 396 8.6 2.5 none none 6/512007 4.57 500 75.7 9.8 2.0 none none GWB-6/MW-6 9/2612001 7.13 242 25.6 2.0 none .- Well development only 7/29/2002 6.75 1,338 0.35 1.5 none none 9/9/2002 4.13 198 6.43 1.5 none none 10/21/2002 6.72 573 0.44 2.5 none none 12/312002 6.14 116 0.45 1.5 none none 6/24/2003 7.09 155 9.1 1.5 none none 12/17/2003 6.82 126 2.27 1.5 none none 6/1612004 6.77 - 178.5 1.25 2.75' none none 12128/2004 7.05 130 2.84 2.25 none none 6/13/2005 6.88 125 2.67 2.50 none none 12/5/2005 7.10 122 2.22 2.00 none none 6/512006 7.20 120 2.41 1.00 none none 12/5/2006 6.45 100 1.00 1.00 none none 6/512007 5.05 78 75.7 0.53 1.00 none none 1 of4

Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'1 Temperature Turbidity'2 Purged Odor Color Comments GWA-7/MW-7 9/2612001 -- -- cloudy 30.0 -- -- Well development only 7/29/2002 6.97 251 8.33 2.5 none none 9/912002 7.52 327 9.97 5.0 none none 10/21/2002 4.39 92 3.14 2.0 none none 12/312002 6.51 188 7.3 2.5 none none 6/24/2003 7.02 163 101.3 4.0 none dark brown Turbidity >100 ntu for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> 12/16/2003 5.73 62.7 100 4.0 none mod. brown Turbidity 85-100 ntu for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 6/1512004 5.94 68.9 42.7 2.0 none none 12/28/2004 8.16 109 9.86 3.5 none none 6/1412005 7.25 275 8.56 3.0 none none 12/6/2005 5.37 92 96 8.5 none mod. brown Turbidity >100 ntu for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> 6/512006 5.12 151 20 5.0 none none 12/4/2006 6.33 180 2.18 2.0 none none 6/512007 6.50 -- 71.4 152 4.0 none tan Conductivity meter malfunctioned GWC-13/MW-13 7/29/2002 6.52 421 0.66 --

9/912002 5.96 77.5 6.40 1.0 none none 10/21/2002 6.19 73.4 3.09 2.5 none none 12/312002 6.54 481 1.00 2.5 none none 6/24/2003 5.95 271 2.02 2.5 none none 12/16/2003 5.65 294 0.75 6.0 none none Split with GAEPD 6/1612004 5.84 366 4.70 1.75 none none 12128/2004 6.09 268 0.38 1.75 none none 6/13/2005 5.75 255 2.00 1.50 none none 12/6/2005 4.03 4.24 1.07 2.50 none none 6/512006 7.17 250 1.11 1.00 none none 12/5/2006 6.35 91 0.79 1.00 none none 6/412007 6.04 48 72.2 1.56 1.00 none none 20f4

Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'1 Temperature Turbidity'2 Purged Odor Color Comments GWC-14/MW-14 7/29/2002 6.49 448 1.15 -- none none 9/912002 5.57 717 5.19 -- none none 10/21/2002 6.00 674 4.65 3.2 none none 12/312002 5.54 547 2.7 4.5 none none 6/24/2003 5.97 197 3.61 2.5 none none 12/17/2003 -- -- -- -- -- -- Split with GAEPD-VOCs & metals 6/15/2004 -- -- -- -- -- -- Well Dry 12/28/2004 -- -- -- -- -- -- Too little water to purge and sample 611412005 -- -- -- -- -- -- Too little water to purge and sample 12/6/2005 -- -- -- -- -- -- Too little water to purge and sample 61612006 -- -- -- -- -- -- Too little water to purge and sample 1215/2006 -- -- -- -- -- -- Too little water to purge and sample 61512007 -- -- -- -- -- -- -- Too little water to purge and sample GWA-15/MW-15 7/29/2002 5.70 95.8 1.12 4.0 none none 9/912002 5.92 118 8.53 2.5 none none 10/21/2002 5.19 81 1.88 4.5 none none 12/312002 7.58 78.2 3.6 2.5 none none 6/24/2003 7.44 48.0 5.38 2.5 none none 12/17/2003 6.93 39.4 4.55 6.5 none none Split with GAEPD 6/15/2004 6.47 55.7 5.59 2.25 none none 12/28/2004 - 6.83 50.0 - 8.85 3.00 none Aone -

6/1412005 7.85 72.0 7.75 4.00 none none 12/5/2005 6.88 56.0 2.3 2.50 none none 6/512006 7.15 55.0 1.6 2.00 none none 12/4/2006 4.86 50.0 8.8 1.00 none none 6/412007 6.16 50.0 81.4 4.95 1.00 none none 30f4

Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity" Temperature Turbidity'2 Purged Odor Color Comments GWB-16/MW-16 7/29/2002 -- -- -- -- -- -- Well Dry 9/9/2002 -- -- -- -- -- -- Well Dry 10/21/2002 -- -- -- -- -- -- Well Dry 12/3/2002 -- -- -- -- -- -- Well Dry 6/24/2003 -- -- -- -- -- -- Well Dry 12/16/2003 -- -- -- -- -- -- Well Dry 6/15/2004 -- -- -- -- -- -- Well Dry 12/28/2004 -- -- -- -- -- -- Well Dry 6/15/2005 -- -- -- -- -- -- Well Dry 12/6/2005 -- -- -- -- -- -- Well Dry 6/5/2006 -- -- -- .- -- -- Well Dry Well Abandon on 10-4-2006 GWB-16/MW-16R 10/5/2006 6.54 56 4.81 2.5 none none Well Development 12/5/2006 7.36 80 5.4 1 none none 61712007 -- -- -- -- -- -- -- Too little water to purge and sample GWB-17/MW-17 6/15/2005 5.84 77.58 5.29 3.5 none none 12/6/2005 6.33 68 10 3 none none 6/5/2006 6.56 80 10 1.5 none none 1215/2006 5.41 80 8.7 1.5 none none 6/5/2007 -- . -- -- -- -- --- -- Too little water-to purge and sample GWB-18/MW-18 6/15/2005 6.67 85.6 8.2 4.2 none none 12/6/2005 -- -- -- -- -- -- Well Dry 6/5/2006 -- -- -- -- -- -- Well Dry 12/5/2006 -- -- -- -- -- -- Well Dry 6/5/2007 -- -- -- -- -- -- -- Well Dry Notes:

-- = no data recorded;

/1 - Conductivity in units of umhos/sec

/2 - Turbidity in units of NTU 40f4

Table 3 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Appendix I to Part 40 CFR Part 258: Constituents for Detection Monitoring (1)

---

~--------- ------------------

Cornmon Name (2) EPA Method Inorganic Constituents:

(1) Antimony . 6010B/7041 (2) Arsenic . 6010B/7061 (3) Barium . 6010B/7091 (4) Beryllium . 6010B/7091 (5) Cadmium . 6010B/7131 (6) Chromium , . 6010B/7191 (7) Cobalt . 6010B/7201 (8) Copper . 6010B/7211 (9) Lead . 6010B/7421 (10) Nickel . 6010B/7 520 (11) Selenium . 6010B/7741 (12) Silver . 6010B/7761 (13) Thallium . 6010B/7841 (14) Vanadium . 6010B/7 911 (15) Zinc . 6010B/7951 Organic Constituents: 8260 (16) Acetone .

(17) Acrylonitrile .

(18) Benzene .

(19) Bromochloromethane .

(20) Bromodichloromethane .

(21) Bromoform; Tribromomethane .

(22) Carbon disulfide .

(23) Carbon tetrachloride .

(24) Chlorobenzene .

(25) Chloroethane; Ethyl chloride  : .

(26) Chloroform; Trichloromethane .

(27) Oibromochloromethane; Chlorodibromomethane .

(28) 1,2-0ibromo-3-chloropropane; OBCP .

(29) 1,2-0ibromoethane; Ethylene dibromide; EOB .

(30) o-Oichlorobenzene; 1,2-0ichlorobenzene .

(31) p-Oichlorobenzene; 1,4-0ichlorobenzene .

(32) trans-1,4-0ichloro-2-butene .

(33) 1,1-0ichloroethane; Ethylidene chloride ,.

(34) 1,2-0ichloroethane; Ethylene dichloriqe .

(35) 1,1-0ichloroethylene; 1,1-0ichloroethene; Vinylidene chloride .

(36) cis-1,2-0ichloroethylene; cis-1,2-0ichloroethene .

(37) trans-1,2-0ichloroethylene; trans-1,2-0ichloroethene (38) 1,2-0ichloropropane; Propylene dichloride .

(39) cis-1,3-0ichloropropene .

(40) trans-1,3-0ichloropropene .

(41) Ethylbenzene .

(42) 2-Hexanone; Methyl butyl ketone .

(43) Methyl bromide; Bromomethane ~ .

(44) Methyl chloride; Chloromethane .

Page 1 of 2

Table 3 (continued)

Southern Nuclear Operating Company, Inc.

Plant Vogde Landfill #3 Appendix I to Part 40 CFR Part 258: Constituents for Detection Monitoring (1)

Common Name (2) EPA Method (45) Methylene bromide; Dibromomethane . 8260 (46) Methylene chloride; Dichloromethane .

(47) Methyl ethyl ketone; MEK; 2-Butanone .

(48) Methyl iodide; Iodomethane .

(49) 4-Methyl-2-pentanone; Methyl isobutyl ketone .

(50) Styrene .

(51) 1,1,1,2-Tetrachloroethane .

(52) 1,1,2,2-Tetrach1oroethane .

(53) Tetrachloroethylene; Tetrachloroethene; Perchloroethylene .

(54) Toluene .

(55) 1,1,1-Trichloroethane; Methylchloroform .

(56) 1,1, 2-Trichloroethane .

(57) Trichloroethylene; Trichloroethene .

(58) Trichlorofluoromethane; CFC-11 .

(59) 1,2, 3-Trichloropropane .

(60) Vinyl acetate .

(61) Vinyl chloride .

(62) Xylenes .

(1) This list contains 47 volatile organics for which possible analytical procedures provided in EPA Report SW-846 "Test Methods for Evaluating Solid Waste, ** third edition, November 1986, as revised December 1987, includes Method 8260; and 15 metals for which SW-846 provides either Method 6010 or a method from the 7000 series of methods.

(2) Common names are those widely used in government regulations, scientific pUblications, and commerce; synonyms exist for many chemicals.

Page 2 of 2

Table 4 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters June 2007 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWB-6/MW-6 GWA-7/MW-7 GWA-7IMW-7' GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 GWS-16IMW-16R GWC-17IMW-17 GWC-18fMW-18 1

Metals Barium 2.00 0.035 Sal 0.220 0.207 0.061 t>\S Sal NS NS NS Nicker NA 0.041 0.041 0.036 0.034 Sal NS 0.036 NS NS NS linc NA 0.193 0.528 0.219 0.211 0.089 NS 0,442 NS NS NS Mercury* 0.002 Sal BQl 0.0026 0.0047 Sal NS Sal NS NS NS Chromium (total) 0.1 Sal Sal 0.083 0.063 Sal Ns Sal NS NS NS Beryllium 0.004 Sal Sal 0.004 0.004 Sal Ns Sal Ns NS NS lead 0.D15' Sal Sal 0.031 0.030 Sal NS Sal NS NS NS Vanadium NA Sal Sal 0.054 0.051 Sal NS Sal NS NS NS Organics2 1,1-Dichloroethane NA Sal Sal Sal Sal 28 NS Sal NS NS NS Chlorobenzene 100 Sal Sal Sal Sal 15 N,S Sal Ns NS NS cis-1 ,2-Dichloroethene 70 Sal Sal Sal Sal 16 NS Sal Ns NS NS Trichlorofluoromethane NA Sal Sal 115 109 98 NS Sal Ns NS NS Vinyl chloride Sal Sal Sal Sal Sal Ns Sal NS NS NS Benzene Sal Sal Sal Sal Sal NS Sal Ns NS NS Trichloroethane Sal Sal Sal Sal Sal NS Sal Ns NS NS BOL - Below quantification level; J - Estimated Value Mel - Maximum Contaminant Level per EPD Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or insufficient recovery to sample well 1Metals concentrations in mg/L 20 rganics concentration units in ug/l or ppb 3Replicate sample of well GWC-7/MW-7 sample 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program SActlon Level Bold indicates detected concentration is greater than the Mel.

Page 1 of 13

Table 4 (Continued)

) Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters December 2006 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWB-6/MW-6 GWA-7/MW-7 GWA-7IMW-7' GWC-13/MW-13 GWC-14/MW-14 GWA*15/MW-15 GWB-16/MW-16R GWC-17/MW-17 GWC-18/MW-18 Metals 1 Barium 2.00 0.021 BOl BOl BOl 0.059 NS BOl BOl BOl NS Nickel NA BOl BOl BOl BOl BOl NS 0.089 BOl BOl NS Zinc NA 0.062 0.028 BOl BOl 0.055 NS 0.316 BOl BOl NS Mercury" 0.002 BOl BOl 0.0008 0.0016 BOl NS BOl BOl BOl NS Organics2 1,1-Dichloroethane NA BOl BOl BOl BOl 20 NS BOl BOl BOl NS Chlorobenzene 100 BOl BOl BOl BOl BOl NS BOl BOl BOl NS cis-1 ,2~Dichloroethene 70 BOl BOl BOl BOl 10 NS BOl BOl BOl NS Trichlorofluoromethane NA BOl BOl 152 159 104 NS BOl BOl BOl NS Vinyl chloride 2 BOl BOl BOl BOl BOl NS BOl BOl BOl NS Benzene BOl BOl BOl BOl BOl NS BOl BOl BOl NS Trichloroethene BOl BOl BQl BOl BOl NS BOl BOl BOl NS sal - Below quantification level; J - Estimated Value Mel* Maximum Contaminant Level per EPD Rule Chapter 391*3-5; NA - None available NS - Not sampled; well dry or insufficient recovery to sample well 1Metals concentrations in mg/L 20rganics concentration units in ug/l or ppb JReplicate sample of well GWC-7/MW-7 sample 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program Bold indicates detected concentration is greater than the MeL.

Page 2 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters June 2006 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWB-6/MW-6 GWA-7/MW-7 GWA-7/MW-7' GWC-13/MW-13 GWC-14/MW-14 GWA-151MW-15 GWC-17/MW-17 GWC-18/MW-18 Metals' Barium 2.00 0.031 BOl BOl BOl 0.051 NS BOl BOl NS Zinc NA 0.100 0.083 0.484 0.266 0.213 NS 0.063 0077 NS Organics2 1,1-Dichloroethane NA BOl BOl BOl BOl 15 NS BOl BOl NS Chiorobenzene 100 BOl BOl BOl BOl BOl NS BOl BOl NS cis-1,2-Dichloroethene 70 BOl BOl BOl BOl 8 NS BOl BOl NS Tlichlorafluoromethane NA BOl BOl 66 94 92 NS BOl BOl NS Vinyl chlolide 2 BOl BOl BOl BOl BOl NS BOl BOl NS Napthalene4 NA NA NA 5 BOl NA NS NA NA NA Benzene 5 BOl BOl BOl BOl BOl NS BOl BOl NS Tlichloroethene 5 BOl BOl BOl BOl BOl NS BOl BOl NS BOl - Below quantification level; J - Estimated Value MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or Insufficient recovery to sample well

'Metals concentrations in mgll 20rganics concentration units in ugll or ppb

'Replicate sample of well GWC-7/MW-7 sample 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Manitoling Program Bold indicates detected concentration is grealerthan the MCl.

Page 3 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters December 2005 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS~IMW~ GWA-7/MW-7 GWA-7/MW-73 GWC-13/MW-13 GWC-14/MW-14 GWA-151MW-15 GWC-17/MW-17 GWC-18/MW-18 Metals' Salium 2.00 Sal Sal 0.024 0.022 0.044 NS Sal Sal NS Zinc NA 0.055 0.020 0.068 0.217 0.194 NS 0.042 0.096 NS Organics2 1,1-Dichloroethane NA Sal Sal Sal Sal 18 NS Sal Sal NS Chlorobenzene 100 Sal Sal Sal Sal 4J NS Sal Sal NS cis-1,2-Dichloroethene 70 Sal Sal Sal Sal 9 NS Sal Sal NS Tlichlorofluoromethane NA Sal Sal 88 85 60 NS Sal Sal NS Vinyl chloride 2 Sal Sal Sal Sal 1J NS Sal Sal NS 4

Napthalene NA NA NA 5 Sal NA NS NA NA NA Benzene 5 Sal Sal Sal Sal 5 NS Sal Sal NS Tlichloroethene 5 Sal Sal Sal Sal 5 NS Sal Sal NS Sal - Selow quantitication level; J - Estimated Value MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or insufficient recovery to sample well

'Metals concentrations in mglL

'Organics concentration units in ugn or ppb 3Replicate sample of well GWC-7/MW-7 sample 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoling Program Bold indicates detected concentration is greater than the MCL.

I I I Page 4 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters June 2005 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-131MW-13' GWC-14/MW-14 GWA-15/MW-15 GWC-17/MW-17 GWC-18/MW-18 Metals' Barium 2.00 Sal sal sal 0.028 0.031 NS sal sal sal Zinc NA Sal sal sal 0.020 sal NS 0.029 sal sal Copper 1.36 Sal sal sal sal sal NS sal sal sal Mercury4 0.002 sal sal sal sal sal NS sal sal sal Chromium (total) 01 Sal sal sal sal sal NS sal sal sal Seryllium 0.004 sal sal sal sal sal NS sal sal sal Cadmium 0.005 Sal sal sal sal sal NS sal sal sal Nickel NA Sal sal sal sal sal NS sal sal sal lead 0.015' Sal BQl sal sal sal NS sal sal sal Vanadium NA Sal sal sal sal sal NS sal sal sal Organics2 1,1-Dichloroethane NA sal sal sal 15 15 NS sal sal sal Carbon disulfide NA Sal sal sal sal sal NS sal 32 sal Chlorobenzene 100 sal sal sal sal sal NS sal sal sal 1,4-Dicholorbenzene 75 sal sal sal sal sal NS sal sal sal Methylene chloride 5 Sal sal sal sal sal NS sal sal sal cis-1,2-Dichloroethene 70 sal sal sal 8 8 NS sal sal sal Trichlorofluoromethane NA sal sal 22 46 45 NS sal sal sal 1,1-Dichloroethene sal sal sal sal sal NS sal sal sal Xylenes (Total) 10000 Sal sal sal sal sal NS sal Sal sal Vinyl chloride 2 Sal sal sal sal sal NS sal sal sal Chlorofonm3 0.1 sal sal sal sal sal NS sal sal sal Trichloroethene 5 sal sal sal sal sal NS sal sal sal sal - Selow quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or insufficient recovery to sample well 1 Metals concentrations in mg/l

'Organics concentration units in ugn or ppb 3Applies only to Community Water Systems serving 10,000

'Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program

'Replicate sample of well GWC-13/MW-13 sample

'Action level Bold indicates detected concentration is greater than the MCL.

Page 5 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters December 2004 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWA-7/MW-75 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 Metals' Sarium 2.00 Sal sal sal sal 0.043 NS sal Zinc NA Sal sal sal sal 0.044 NS sal 6

Copper 1.3 Sal sal sal sal sal NS sal Mercurl 0.002 sal sal sal 0.0017 sal NS 0.0004 Chromium (total) 0.1 Sal sal sal sal sal NS sal Seryllium 0.004 sal sal sal sal sal NS sal Cadmium 0.005 Sal sal sal sa~ sal NS sal Nickel NA Sal sal sal sal sal NS sal 6

lead 0.015 sal sal sal sal sal NS sal Vanadium NA Sal sal sal sal sal NS sal Organics2 1,1-Dichloroethane NA sal sal sal sal 16 NS sal Chlorobenzene 100 sal sal sal sal sal NS sal 1,4-Dicholorbenzene 75 sal sal sal sa~ sal NS sal Methylene chloride 5 Sal sal sal sal sal NS sal cis-1,2-Dichloroethene 70 sal sal sal sal 8 NS sal Trichlorofluoromethane NA sal sal 146 143 81 NS sal 1,1-Dichloroethene 7 sal sal sal sal sal NS sal Xylenes (Total) 10000 Sal sal sal sal sal NS sal Vinyl chloride 2 Sal sal sal sal sal NS sal Chloroform 3 0.1 sal sal sal sal sal NS sal Trichloroethene 5 sal sal sal sal.: sal NS sal sal - Selow quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or insufficient recovery to sample well 1Metals concentrations in mg/l 20rganics concentration units in ugll or ppb 3Applies only to Community Water Systems serving 10,000 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program 5Replicate sample of well GWA-7/MW-7 sample 6 Action level Bold indicates detected concentration is greater than the MCL.

\.

Page 6 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters June 2004 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-13/MW-135 GWC-14/MW-14 GWA-15/MW-15 Metals1 Sarium 2.00 0.040 Sal Sal 0.034 0.034 NS Sal Zinc NA Sal Sal Sal Sal Sal NS Sal 6

Copper 1.3 Sal Sal Sal Sal Sal NS Sal Mercurl 0.002 Sal Sal 0.0006 Sal Sal NS Sal Chromium (total) 0.1 Sal Sal Sal Sal Sal NS Sal Seryllium 0.004 Sal Sal Sal Sal Sal NS Sal Cadmium 0.005 Sal Sal Sal Sal Sal NS Sal Nickel NA Sal Sal Sal Sal Sal NS Sal lead 0.015 6 Sal Sal Sal sOL Sal NS Sal Vanadium NA Sal Sal Sal Sal Sal NS Sal Organics2 1,1-Dichloroethane NA Sal Sal Sal 17 19 NS Sal Chlorobenzene 100 Sal Sal Sal Sal Sal NS Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal Sal NS Sal Methylene chloride 5 Sal Sal Sal Sal Sal NS Sal cis-1,2-Dichloroethene 70 Sal Sal Sal 9 10 NS Sal Trichlorofluoromethane NA Sal Sal 46 121 133 NS Sal 1,1-Dichloroethene 7 Sal Sal Sal Sal Sal NS Sal Xylenes (Total) 10000 Sal Sal Sal Sal Sal NS Sal Vinyl chloride 2 Sal Sal Sal 2 2 NS Sal Chloroform 3 0.1 Sal Sal Sal Sal Sal NS Sal Trichloroethene 5 Sal Sal 13 Sal Sal NS Sal Sal - Selow quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or insufficient recovery to sample well 1Metals concentrations in mg/l 20rganics concentration units in ugll or ppb 3Applies only to Community Water Systems serving 10,000 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program 5Replicate sample of well GWC-13/MW-13 sample 6Action level Sold indicates detected concentration is greater than the MCL.

Page 7 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters December 2003 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-13/MW-13 5 GWC-14/MW-14 GWA-15/MW-15 Metals' Sarium 2.00 0.142 Sal Sal 0.033 0.032 0.189 Sal Zinc NA 0.032 Sal 0.023 Sal Sal 0.127 Sal Copper 1.36 0.025 Sal Sal SOL.: Sal 0.026 Sal Mercurl 0.002 Sal Sal Sal Sal Sal 0.01 Sal Chromium (total) 0.1 0.028 Sal Sal Sal Sal 0.091 Sal Seryllium 0.004 Sal Sal Sal Sal Sal 0.004 Sal Cadmium 0.005 Sal Sal Sal Sal Sal 0.011 Sal Nickel NA Sal Sal Sal Sal Sal 0.034 Sal 6

lead 0.015 Sal Sal Sal Sal Sal 0.015 Sal Vanadium NA Sal Sal Sal Sal Sal 0.060 Sal 2

Organics 1,1-Dichloroethane NA Sal Sal Sal 20 21 10 Sal Chlorobenzene 100 Sal Sal Sal Sal Sal 19 Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal Sal 33 Sal Methylene chloride 5 Sal Sal Sal Sal Sal Sal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal 14 14 17 Sal Trich lorofluoromethane NA Sal Sal 34 102 97 Sal Sal 1,1-Dichloroethene 7 Sal Sal Sal SOL Sal Sal Sal Xylenes (Total) 10000 Sal Sal Sal Sal Sal 10 Sal Vinyl chloride 2 Sal Sal Sal Sal Sal Sal Sal 3

Chloroform 0.1 Sal Sal Sal Sal Sal Sal Sal Sal - Selow quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available 1Metals concentrations in mg/l 20rganics concentration units in ug/I or ppb 3Applies only to Community Water Systems serving 10,000 4Appendix II parameter 5Replicate sample of well GWC-13/MW-13 sample 6Action level Bold indicates detected concentration is greater than the MCL.

Page 8 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters June 2003 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-13/MW-13 5 GWC-14/MW-14 GWA-15/MW-15 Metals' Sarium 2.00 Sal Sal 0.036 0.029 0.030 0.051 Sal Zinc NA Sal Sal 0.034 Sal Sal Sal Sal Copper 1.3 Sal Sal 0.035 Sal Sal Sal Sal Mercurl 0.002 NS NS NS 0.00~5 0.0005 0.0072 Sal 2

Organics 1,1-Dichloroethane NA Sal Sal Sal 9 9 10 Sal Chlorobenzene 100 Sal Sal Sal Sal Sal 7 Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal Sal 16 Sal Methylene chloride 5 Sal Sal Sal Sal Sal Sal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal 6 6 10 Sal Trichlorofluoromethane NA Sal Sal 23 41 47 5 Sal 1,1-Dichloroethene 7 Sal Sal Sal Sal Sal Sal Sal Xylenes (Total) 10000 Sal Sal Sal Sal Sal Sal Sal Vinyl chloride 2 Sal Sal Sal Sal Sal Sal Sal Chloroform 3 0.1 Sal Sal Sal Sal Sal Sal Sal Sal - Selow quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available 1Metals concentrations in mg/l 20rganics concentration units in ug/I or ppb 3Applies only to Community Water Systems serving 10,000 4 Appendix II parameter; NS reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program 5Replicate sample of well GWC-13/MW-13 sample Bold indicates detected concentration is greater than the MeL.

Page 9 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters December 2002 WELL SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 Metals 1 Sarium 2.00 0.018 Sal 0.015 0.082 0.106 Sal Zinc NA Sal Sal Sal 0.027 Sal Sal Organics 2 1,1-Dichloroethane NA Sal Sal Sal 7 16 Sal Chlorobenzene 100 Sal Sal Sal Sal 10 Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal 39 Sal Methylene chloride 5 Sal Sal Sal Sal Sal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal Sal 19 Sal Trichlorofluoromethane NA Sal Sal 210 391 27 Sal 1,1-Dichloroethene 7 Sal Sal Sal 11 24 Sal Xylenes (Total) 10000 Sal Sal Sal Sal 21 Sal Vinyl chloride 2 Sal Sal Sal Sal 4 Sal 3

Chloroform 0.1 Sal Sal Sal 5 Sal Sal Sal - Selow quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available 1Metals concentrations in mg/l 20rganics concentration units in ug/I or ppb 3Applies only to Community Water Systems serving 10,000 Bold indicates detected concentration is greater than the MCL.

Page 10 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters October 2002 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 GWA-15-2/MW-15-2 3 Metals' Sarium Sal Sal Sal 0.083 0.064 Sal Sal Zinc Sal Sal Sal 0.027 Sal Sal Sal Organics2 1,1-Dichloroethane NA Sal Sal Sal 6 17 Sal Sal Chlorobenzene 100 Sal Sal Sal Sal 9 Sal Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal 35 Sal Sal Methylene chloride 5 Sal Sal Sal Sal 11 Sal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal Sal 16 Sal Sal Trichlorofluoromethane NA Sal Sal 221 348 31 Sal Sal 1,1-Dichloroethene 7 Sal Sal Sal Sal Sal Sal Sal Xylenes (Total) 10000 Sal Sal Sal Sal 11 Sal Sal Vinyl chloride 2 Sal Sal Sal Sal Sal Sal Sal Sal - Selow quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available

'Metals concentrations in mg/l 20rganics concentration units in ugll or ppb 3Replicate sample of GWA-15/1MW-15 well Sold indicates detected concentration is greater than the MCL.

Page 11 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters September 2002 WEll SAMPLES CONSTITUENT MCl 3 GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-14/MW-14 GWC-14-2/MW-14-2 GWA-15/MW-15 Metals 1 Sarium 2 0.020 Sal sal 0.085 0.092 0.095 sal Zinc NA Sal sal sal 0.023 sal sal sal Organics2 1,1-Dichloroethane NA sal sal sal 6 21 21 sal Chlorobenzene 100 sal sal sal sal 8 8 sal 1A-Dichlorobenzene 75 Sal sal sal sal 37 36 sal Methylene chloride 5 Sal sal sal sal sal sal sal cis-1,2-Dichloroethene 70 Sal sal sal sal 19 18 sal Trichlorofluoromethane NA sal sal 32 381 47 48 sal 1,1-Dichloroethene 7 sal sal sal 8 29 28 sal Xylenes (Total) 10000 Sal sal sal sal 23 23 sal Vinyl chloride 2 Sal sal sal sal sal 3 sal sal - Selow quantification level MCl - Maximum Contaminant level per Georgia EPD Rule Chapter 391-3-5; NA - None available 1Metals concentrations in mg/l 20rganics concentration units in ug/l or ppb 3Replicate sample of GWS-14/1MW-14 well sample Sold indicates detected concentration is greater than the MCL.

Page 12 of 13

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters July 2002 1

CONSTITUENT MCl WEllS 3

GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWA-7-2/MW-7-2 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 Metals1 Sarium 2 Sal Sal Sal Sal 0.077 0.068 Sal Zinc NA Sal Sal Sal Sal Sal Sal Sal Organics2 1,1-Dichloroethane NA Sal Sal Sal Sal Sal 13 Sal Chiorobenzene 100 Sal Sal Sal Sal Sal Sal sal 1,4-Dichlorobenzene 75 Sal Sal Sal Sal Sal 20 sal Methylene chloride 5 9 6 8 7 8 8 Sal cis-1,2-Dichloroethene 70 sal Sal sal sal Sal 10 Sal Trichlorofluoromethane NA sal Sal 177 192 300 43 Sal 1,1-Dichloroethene 7 sal Sal Sal Sal Sal Sal Sal Xylenes (Total) 10000 Sal Sal Sal Sal Sal 8 Sal Vinyl chloride 2 Sal Sal Sal Sal Sal Sal Sal Sal - Selow quantification level MCl - Maximum Contaminant level per Georgia EPD Rule Chapter 391-3-5; NA - None available 1Metals concentrations in mg/l 20rganics concentration units in ugll or ppb 3 Replicate sample of GWA-7/MW-7 well sample Bold indicates detected concentration is greater than the MCL.

Page 130f13

FIGURES E6500 E7000 E 7500 E 8500 N10000 N 10000 Map pxoduced by BEIAerW Mapping, Peachtree City, GA BEI PROJEct #1010805 DATB OF PHOTOGRAPHY: B/22/2001 LEGEND 150 R.XISTING CONTOUR

- - X - - FE."lCE K 9500 N 9500 J:vI.M-6 -$- JvlETIIANE >>;:ELL GWC-13/1'v~'-13 232.69

• GROUNDWATER MONITORING WELL GROUNDWATER ELEVATION WASTEMANAGE~ENTUNIT/BUFFER BOUNDARY l'vIARKER B-B. ABANDONED SOILBllRING 230_ POTENTIOMETRlC CONTOUR U:-.lE AT 10 FT INTERVALS

-~~~-.l."",,,-_  : WASTE MA."lAGElvlENT 206.02 1 UNIT BOUNDARY POTE),iTIOMS'TRlC CONTOUR LINE

• 22B AT 2 Ff LNTERVALS 1 i .. 0.02 GROUNDWATER GRADIENT I

1 GROUNDWATER PLOW DIRECTION I

I 10 10 I

1 1

N9000 I

-'Il-I"§S--_.' N 9000 I

1+ GWC-18/MW-18

DRY I r, I 1\

.~~

I f

I 1~1 I!i I.'

'/.

REV.

THE DILXTRA GROUP, INC.

1205 JOIINSON [lTIlillY ROAD, #136*446 MAJUETTA., GEORGIA 30068 N 8500 N 850\l GROUNDWATER ELEVATION AS-BUILT DATA TABLE GROUNDWATER TOPOl' CASING E 7500 E8000 BOLT TOTAL N E EI. DEl'THEI. 251.96 206.74 I-~:;;;::'-I---:~~~+ .....,I-~ft.::;m:::"l_~ ft msl 278.87 261.33 229.94 Groundwater Contour Elevation 9631.6193 7826.0659 257.56 9361.2699 7341.2712 272.99 273.08 262.88 232.69 209.88 2007 9127.9166 6980.2829 268.32 238.32 26815 22293 8809.0679 7253.0077 257.95 227.95 256.95 ABANDONED 8808.1725 7841.8269 259.39 234.39 237.59 158.54 9248.4436 8003.8302 270.86 240.86

ApPENDIX A - HYDRAULIC GRADIENT CALCULATION SHEETS

Plant Vogtle Landfill #3 Gradient Calculation (based on three-point problem)

June 2007 Monitoring Event Water Table Well Designation Elevation Northing Easting GWC-5/MW-5 206.74 9604.30 7999.33 GWB-6/MW-6 229.94 9432.48 7473.25 GWA-7/MW-7 228.38 8826.22 7657.89 GWC-13/MW-13 232.69 9242.72 7995.86 GWC-14/MW-14 209.88 8960.64 7999.10 GWA-15/MW-15 222.93 8975.71 6886.73 GWB-16/MW-16 158.54 9912.48 7948.95 GWC-17/MW-17 DRY 8553.09 8135.59 GWC-18/MW-18 DRY 8938.05 8238.63 Gradient Calculation from fitting a plane to three points a x, + by, + cz, + d =0 a X2 + b Y2 + CZ2 + d =0 a x3 + b Y3 + CZ3 + d =0 where (X;,Yi) are the coordinates of the well and zi is the head, i = 1,2,3 2 2 The gradient is calculated from the square root of (a + b )

Southwest Gradient Wells of Interest = (GWB-6, GWA-7 & GWA-15) (High-Mid-Low) x Y z GWB-6/MW-6 9432.48 7473.25 229.94 GWA-7/MW-7 8826.22 7657.89 228.38 GWA-15/MW-15 8975.71 6886.73 222.93 7473.25 229.94 1 I"

a= 7657.89 228.38 1 -2209.298 6886.73 222.93 1 9432.48 229.94 1 I"

b= 8826.22 228.38 1 3537,3214 8975.71 222.93 1 9432.48 7473.25 1 c= 8826.22 7657.89 1 = 439921.63 8975.71 6886.73 1 9432.48 7473.25 229.94 d= 8826.22 7657.89 228.38 53881137 8975.71 6886.73 222.93 1=

zO = -122.4789443 mx= 0.005022025 my= -0.008040799 ISouthwest Gradient - 0. 009 1 Page 1 of 3

Plant Vogtle Landfill #3 Gradient Calculation (based on three-point problem)

\ Northeast Gradient Wells of Interest = (GWC-16, GWB-6 & GWC-5) (High-Mid-Low) x Y z GWB-16/MW-16 9242.72 7995.86 158.54 GWB-6/MW-6 9432.48 7473.25 229.94 GWC-5/MW-5 9604.30 7999.33 206.74 7995.86 158.54 1 a= 7473.25 229.94 1 = -25437.56 7999.33 206.74 1 9242.72 158.54 1 b= 9432.48 229.94 1 = -16670.38 9604.30 206.74 1 9242.72 7995.86 1 c= 9432.48 7473.25 1 = 189623.79 9604.30 7999.33 1 9242.72 7995.86 158.54 d= 9432.48 7473.25 229.94 -71755264 9604.30 7999.33 206.74 1=

zO = 378.4085517 mx= 0.134147513 my= 0.087912914 INortheast Gradient = 0. 161 Page 2 of 3

Plant Vogtle Landfill #3 Gradient Calculation (based on three-point problem)

Southeast Gradient Wells of Interest = (GWC-13, GWA-7 & GWC-14) (High-Mid-Low) x Y z GWC-13/MW-13 9242.72 7995.86 232.69 GWA-7/MW-7 8826.22 7657.89 228.38 GWC-14/MW-14 8960.64 7999.10 209.88 7995.86 232.69 1 a= 7657.89 228.38 1 7723.0601 7999.10 209.88 1 1=

9242.72 232.69 1 b= 8826.22 228.38 1 = 8284:6002 8960.64 209.88 1 9242.72 7995.86 1 c= 8826.22 7657.89 1 -96684.04 8960.64 7999.10 1 1=

9242.72 7995.86 232.69 d= 8826.22 7657.89 228.38 -17357830 8960.64 7999.10 209.88 1=

zO = -179.5314971 mx= 0.079879371 my= 0.085687363 ISoutheast Gradient = 0. 121 Page 3 of 3

ApPENDIX B - LABORATORY ANALYTICAL REPORTS JUNE 2007

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road* Suite 100

• Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Laboratory Report ACL Project #: 53572 Client Proj #: Vogtle LF #3 Prepared For:

The Dextra Group 1205 Johnson Ferry Rd.

Suite 136-446 Marietta, GA 30068-0000 Attention: Mr. Kurt Batsel Report Date: 07/12/2007 This report contains 72 pages.

(including this cover page and chain of custody)

=al Director Advanced Chemistry Labs is a woman owned small business concern.

If you have any questions concerning this report, please do not hesitate to call us at (770) 409-1444.

This report may not be reproduced, except in full, without the written permission of ACL (Advanced Chemistry Labs, Inc).

ACL certifies that the folloWing analytical results meet all the requirements of NELAC.

ACL is accredited by the National Environmental Laboratory Accreditation Program (NELAP).

ACL maintains the following certifications: NELAC (E87212), South Carolina (98009001), North Carolina (362), Florida (E87212),

USDA Soil Import License (S-36503).

Page 1 of 72

IACL I ADVANCED CHEMISTRY LABS, INC Phone: (770) 4~0~9-~14~4~4-----------~3~0~39~A~m-w""'li~le~rR~o-a""'ld~,S~u~it-e~1O~O~,~A~t1a-n~ta';',~G~A~30~3~6~0 Fax: (770) 409-1844 P. O. Box 88610, Atlanta, GA 30356 e-mail: acl@acl-Iabs.net Data Qualifier Codes Code Description A Value reported is the mean of two or more determinations; B Indicates the analyte was detected in the sample and method blank; BQL Below practical quantitation limit; DW Results reported on a dry-weight basis (ex: mg/kg,dw);

E Estimated value: (i) sample received or analyzed beyond the accepted holding time; (ii) sample received at improper temperature; (iii) the continuing calibration for an analyte did not meet qc criteria; H Estimated value; result higher than the highest calibration standard; J Reported value is between the method detection limit and the practical quantitation limit; PQL Practical quantitation limit; TIC Tentatively identified compound;

• • • Not analyzed due to interferences; Upon client request, a statement of the test result estimated uncertainty can be provided.

NOTE: Unless otherwise noted, all results are reported on an as received basis.

Page 2 of 72

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0'="9-~1~44~4~--------------3~0~3~9~A-m-w~jl~er~R~o-a-d~*~S~u~ite~10~0~.~A~U~a-nta~.

Fax: (770) 409*1844 G~A~3~0~36~0~

P.O. Box 88610* AUanta. GA 30356 e-mail: acl@acl*labs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel V.O. (50308/82608) - Appendix I Sample 10: GWC-5/MW-5 Matrix: Water Date Sampled: 06/05/2007 Date Extracted:

Date Analyzed: 06/14/2007 ACL Sample #: 255918 Units: IJg/L Analyst: ME Analyte Result PQL Analyte Result PQL Acetone Sal 100 Styrene Sal 5 Acrylon itriIe Sal 50 1,1,1,2-Tetrachloroethane Sal 5 Senzene Sal 5 1,1,2,2-Tetrachloroethane Sal 5 Sromochloromethane Sal 5 Tetrachloroethene Sal 5 Sromodichloromethane Sal 5 Toluene Sal 5 Sromoform Sal 5 1,1,1-Trichloroethane Sal 5 Carbon disulfide Sal 5 1,1,2-Trichloroethane Sal 5 Carbon tetrachloride Sal 5 Trichloroethene Sal 5 Chlorobenzene Sal 5 Trichlorof1uoromethane Sal 5 Chloroethane Sal 10 1,2,3-Trichloropropane Sal 5 Chloroform Sal 5 Vinyl acetate Sal 50 1,2-Dibromo-3-chloropropane Sal 20 Vinyl chloride Sal 2 Dibromochloromethane Sal 5 m,p-Xylene Sal 10 1,2-Dibromoethane Sal 5 o-Xylene Sal 5 trans-1,4-Dichloro-2-butene Sal 10 1,2-Dichlorobenzene Sal 5 1A-Dichlorobenzene Sal 5 1,1-Dichloroethane Sal 5 1,2-Dichloroethane Sal 5 1,1-Dichloroethene Sal 5 cis-1 ,2-Dichloroethene Sal 5 trans-1,2-Dichloroethene Sal 5 1,2-Dichloropropane Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene Sal 5 Ethylbenzene Sal 5 2-Hexanone Sal 50 Methyl bromide Sal 10 Methyl chloride Sal 10 Methyl ethyl ketone Sal 100 I I~Methyl iodide Sal 5

\~4-Methyl-2-pentanone Sal 50 Methylene bromide Sal 5 Methylene chloride Sal 5 Page 3 of 72

---

- - - -

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409*1444 3039 Amwiler Road* Suite 100

• Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtre LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWC-5/MW-5 Matrix: Water Date Sampled: 06/05/2007 Date Extracted: 0611112007 Date Analyzed: 06/25/2007 ACL Sample #: 255918 Units: IJg / L Analyst: MA Analyte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 4 of 72

IACLI Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~09~-~14~44:-:-------------~3~03~9!""'A~m-w-:i~le-r R~o-a-:d-.~Su-:i~te-1~0~0-.A~t1~a-nta~,G~A~3~03""'6""O-P.O. Box 88610

• Atlanta, GA 30356 a-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Appendix I Metals (60108/7841/7041)

Sample 10: GWC-5/MW-5 Matrix: Water Date Sampled: 06/05/2007 Date Extracted:

Date Analyzed: 06/13/2007 ACL Sample #: 255918 Units: mg/L Analyst: SW Analvte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Barium 0.035 0.020 Beryllium Sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020 l-obalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010 Nickel 0.041 0.020 Selenium Sal 0.040 Silver Sal 0.010 Thallium Sal 0.002 Vanadium Sal 0.050 Zinc 0.193 0.020 Page 5 of 72

IA CL I AnVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~09="-"":"14~4~4-------------~3~0~39~A':""m-w~I::-le-r ':'Ro-a~d:-*~S~ui~te-1~O~O-.A~t1:":"'a-n":""ta-.':'GA':"""':3~03~6:":0-Fax: (770) 409*1844 P.O. BOlC 88610

• Atlanta. GA 30356 e-mail: acl@acl-labs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136*446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Date Sample 10 ACL# Analyte Matrix Result PQL Units Analyzed GWC-5/MW-5 255918 Mercury (7470A) Water Sal 0.0005 mg/l 06/15/2007 Page 6 of 72

- - - - - - _._.- -._--

IACLI ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0~9-~1~444~-------------~3~0~3~9~A-m-w~il~er~R~o-a~d~.~S~u~ite~10~0~*~A~t1~a-nta-.G~A~3~0~36~0"""

Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel v.o. (50308/82608) - Appendix I Sample 10: GWB-6/MW-6 Matrix: Water Date Sampled: 06/05/2007 Date Extracted:

Date Analyzed: 06/14/2007 ACl Sample #: 255919 Units: IJg/L Analyst:, ME Analvte Result PQl Analvte Result PQl Acetone Sal 100 Styrene Sal 5 Acrylonitrile Sal 50 1,1,1,2-Tetrachloroethane Sal 5 Senzene Sal 5 1,1,2,2-Tetrachloroethane Sal 5 Sromochloromethane Sal 5 Tetrachloroethene Sal 5 Sromodichloromethane Sal 5 Toluene Sal 5 Csromoform Sal 5 1,1,1-Trichloroethane Sal 5

'{Carbon disulfide Sal 5 1,1,2-Trichloroethane Sal 5

., .*.*....* Carbon tetrachloride Sal 5 Trichloroethene Sal 5 Chlorobenzene Sal 5 Trichlorofluoromethane Sal 5 Chloroethane Sal 10 1,2,3-Trichloropropane Sal 5 Chloroform Sal 5 Vinyl acetate Sal 50 1,2-Dibromo-3-chloropropane Sal 20 Vinyl chloride Sal 2 Dibromochloromethane Sal 5 m,p-Xylene Sal 10 1,2-Dibromoethane Sal 5 o-Xylene Sal 5 trans-1 A-Dichloro-2-butene Sal 10 1,2-Dichlorobenzene Sal 5 1A-Dichlorobenzene Sal 5 1,1-Dichloroethane Sal 5 1,2-Dichloroethane Sal 5 1,1-Dichloroethene Sal 5 cis-1,2-Dichloroethene Sal 5 trans-1,2-Dichloroethene Sal 5 1,2-Dichloropropane Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene Sal 5 Ethylbenzene Sal 5 2-Hexanone Sal 50 Methyl bromide Sal 10 Methyl chloride Sal 10 Methyl ethyl ketone Sal 100 fVIethyl iodide SOL 5

, Methyl-2-pentanone Sal 50 Methylene bromide SOL 5 Methylene chloride Sal 5 Page 7 of 72

-~----- .. _. __...-- --_._--_.._-

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409*1444 3039 Amwiler Road* Suite 100* Atlanta. GA 30360 Fax: (770) 409*1844 P.O. Box 88610

• Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/0812007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWB-6/MW-6 Matrix: Water Date Sampled: 06/05/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/25/2007 ACL Sample #: 255919 Units: J,lg/L Analyst: MA Analyte Result PQL 1,2-Dibromo-3-chloropropane SQl 0.20 1,2-Dibromoethane SQl 0.05 Page 8 of 72

---

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road

• Suite 100

• Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl.labs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta. GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Appendix I Metals (60108/7841/7041)

Sample 10: GWB-6/MW-6 Matrix: Water Date Sampled: 06/05/2007 Date Extracted:

Date Analyzed: 06/13/2007 ACl Sample #: 255919 Units: mg/L Analyst: SW Analvte Result PQl Antimony BOl 0.006 Arsenic BOl 0.010 Barium BOl 0.020 Seryllium BOl 0.004 Cadmium Sal 0.005 Chromium Sal 0.020

Cobalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010 Nickel 0.041 0.020 Selenium BOl 0.040 Silver BOl 0.010 Thallium Sal 0.002 Vanadium Sal 0.050 Zinc 0.528 0.020 Page 9 of 72

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0~9-~144~4-------------~3~03~9~Am~w~I~le-rR~oa~d-.~Su~l~te""'!1~0~0-.A'!!""!t1"!""a-nta~.G~A~30~3~6~0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: ac\@acl-Iabs.net www.advancedchemistrylabs.com The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136.-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Mr. Kurt Batsel Date

~ Analyte Matrix Result PQL Units Analyzed 255919 Mercury (7470A) Water Bal 0.0005 mglL 06/15/2007 Page 10 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road

• Suite 100

• Atlanta. GA 30360

\ Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 i

e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel V.C. (50308/82608) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

Date Analyzed: 06/14/2007 ACL Sample #: 255920 Units: ~g/L Analyst: ME Analyte Result PQL Analyte Result PQL Acetone Sal 100 Ethyl methacrylate Sal 10 Acetonitrile Sal 100 Ethylbenzene Sal 5 Acrolein Sal 100 2-Hexanone Sal 50 Acrylonitrile Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile Sal 100 Senzene Sal 5 Methyl bromide Sal 10 romochloromethane Sal 5 Methyl chloride Sal 10 Sromodichloromethane Sal 5 Methyl ethyl ketone Sal 100 Sromoform Sal 5 Methyl iodide Sal 5 Carbon disulfide Sal 5 Methyl methacrylate Sal 30 Carbon tetrachloride Sal 5 4-Methyl-2-pentanone Sal 50 Chlorobenzene Sal 5 Methylene bromide Sal 5 Chloroethane Sal 10 Methylene chloride Sal 5 Chloroform Sal 5 Naphthalene Sal 5 Chloroprene Sal 20 Propionitrile Sal 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane Sal 5 1,1,1,2-Tetrachloroethane Sal 5 1,2-Dibromoethane Sal 5 1,1,2,2-Tetrachloroethane Sal 5 trans-1 A-Dichloro-2-butene Sal 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene Sal 5 Toluene Sal 5 1,3-Dichlorobenzene Sal 5 1,1,1-Trichloroethane Sal 5 1A-Dichlorobenzene Sal 5 1,1,2-Trichloroethane Sal 5 Dichlorodifluoromethane Sal 5 Trichloroethene Sal 5 1,1-Dichloroethane Sal 5 Trichlorofluoromethane 115 5 1,2-Dichloroethane Sal 5 1,2,3-Trichloropropane Sal 5 1,1-Dichloroethene Sal 5 Vinyl acetate Sal 50 cis-1,2-Dichloroethene Sal 5 Vinyl chloride Sal 2 trans-1,2-Dichloroethene Sal 5 m,p-Xylene Sal 10 1,2-Dichloropropane Sal 5 o-Xylene Sal 5 1,3-Dichloropropane Sal 5 2,2-Dichloropropane Sal 15 1,1-Dichloropropene Sal 5 cis-1 ,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene Sal 5 Page 11 of 72

.... __ .".. _ - _ . __ .. , . ...... - .........

IACLI ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~09!""-~144~4~------------""""3~03~9~A!""m-w~i~le-r~R-oa-d!""*~S~u~ite""""'!"'10~O~."""!A-'t1~an-ta-."""!G~A~30~3~6""O-FalC: (770) 409-1844 P.O. Box 88610

• Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/0412007 Date Extracted: 06/11/2007 Date Analyzed: 0611412007 ACL Sample #: 255920 Units: IJg/L Analyst: RB Analyte Result PQL 4-Chloro-3-methylphenol Sal 20 2-Chlorophenol Sal 10 m & p-Cresol Sal 10 i

!Ii i I

o-Cresol Sal 10 2,4-Dich lorophenol Sal 10 2,6-Dichlorophenol Sal 10 2,4-Dimethylphenol Sal 10 4,6-Dinitro-2-methylphenol Sal 50 2,4-Dinitrophenol Sal 50 2-Nitrophenol Sal 10 4-Nitrophenol Sal 50 Pentachlorophenol Sal 50 Phenol Sal 10 2,3,4.6-Tetrachlorophenol Sal 10 2,4,5-Trichlorophenol Sal 10 2,4,6-Trichlorophenol Sal 10 Page 12 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409*1444 3039 Amwller Road

• Suite 100

• Atlanta, GA 30360 Fax: (770) 409*1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/14/2007 ACL Sample #: 255920 Units: IJg /L Analyst: RB Analyte Result PQL Analvte Result PQL Acenaphthene Sal 10 Dimethyl phthalate Sal 10 Acenaphthylene Sal 10 p-(Dimethylamino)azobenzene Sal 10 Acetophenone Sal 10 7, 12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene Sal 20 3,3'-Dimethylbenzidine BOl 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene BOl 20 Anthracene Sal 10 2A-Dinitrotoluene Sal 10 enzo(a)anthracene Sal 10 2,6-Dinitrotoluene Sal 10 Benzo(a)pyrene Sal 10 Diphenylamine Sal 10 Senzo(b)fluoranthene Sal 10 Disulfoton Sal 10 Benzo(g,h ,i)perylene Sal 10 Ethyl methanesulfonate Sal 20 Senzo(k)fluoranthene Sal 10 Famphur BOl 20 Benzyl alcohol Sal 20 Fluoranthene Sal 10 Sis(2-ehloroethoxy)methane Sal 10 Fluorene Sal 10 Bis(2-chloroethyl)ether Sal 10 Hexachlorobenzene Sal 10 Sis(2-chloroisopropyl)ether Sal 10 Hexachlorobutadiene Sal 10 Sis(2-ethylhexyl)phthalate Sal 10 Hexachlorocyclopentadiene Sal 10 4-Bromophenyl phenyl ether Sal 10 Hexachloroethane BOl 10 Sutyl benzyl phthalate Sal 10 Hexachloropropene Sal 10 p-Chloroaniline Sal 20 Indeno(1,2,3-cc1)pyrene Sal 10 Chlorobenzilate Sal 10 Isodrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether Sal 10 Isosafrole Sal 10 Chrysene Sal 10 Kepone Sal 20 Di-n-butyl phthalate Sal 10 Methapyrilene BOl 100 Di-n-octyl phthalate Sal 10 Methyl methanesulfonate BOl 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a, h)anthracene Sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran Sal 10 2-Methylnaphthalene Sal 10 1,2-Dichlorobenzene Sal 10 Naphthalene Sal 10 1,3-Dichlorobenzene Sal 10 1A-Naphthoquinone Sal 10 1,4-Dichlorobenzene Sal 10 1-Naphthylamine Sal 10 3,3'-Dichlorobenzidine Sal 20 2-Naphthylamine Sal 10 Diethyl phthalate Sal 10 5-Nitro-o-toluidine Sal 10 Dimethoate Sal 10 2-Nitroaniline Sal 50 Page 13 of 72

• • • _ . _ _ '0 _ _ _ _ _ _ _ * *

• _ ' 0 __ *_ _ _ - .. _ **

IACL I Fax: (710) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0='9-~1"='444~-------------~3~0~3~9~A-m-w~i1-er-:R~o-a-:d~.~S~ul~*te~10~0~.-:A~tl~a-:nta~.

G~A~3~0~36~0~

P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client ProJ #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample ID: GWA-7/MW-7 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/14/2007 ACL Sample #: 255920 Units: IJg/L Analyst: RB Analyte Result PQl 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine Sal 10 N-Nitrosodiethylamine Sal 20 N-Nitrosodimethylamine Sal 10 N-Nitrosodiphenylamine Sal 10 N-Nitrosodipropylamine Sal 10 N-Nitrosomethylethylamine Sal 10 N-Nitrosopiperidine Sal 20 N-Nitrosopyrrolidine Sal 40 Parathion Sal 20 Pentachlorobenzene Sal 10 Pentachloronitrobenzene Sal 20 Phenacetin Sal 20 Phenanthrene Sal 10 p-Phenylened iamine Sal 10 Phorate Sal 10 Pronamide Sal 10 Pyrene Sal 10 Safrole Sal 10 1,2,4,5-Tetrachlorobenzene Sal 10 Thionazin Sal 20 0- Toluidine Sal 10 1,2,4-Trichlorobenzene Sal 10 o,o,o-Triethyl phosphorothioate Sal 50 1,3,5-Trinitrobenzene Sal 10 Page 14 of 72

Phone: (770)

I IACL 4~0~9-~144~4~------------~a~0~a9~A~m-w-i~le-r~R~o-ad~.~S~u~it-e~10~0!"'.-:A~tI!"'a-:nta~,

ADVANCED CHEMISTRY LABS, INC.

G~A~a~Oa~6~0-FalC: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemislrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Pesticides/PCBs (8081A18082)* Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/20/2007 ACL Sample #: 255920 Units: ~g/l Analyst: AM Analyte Result PQL Aldrin Sal 0.05 Arochlor-1016 Sal 0.50 Arochlor-1221 Sal 0.50 Arochlor-1232 Sal 0.50 Arochlor-1242 Sal 0.50

,

C Arochlor-1248 Arochlor-1254

. Arochlor-1260 Sal Sal Sal 0.50 0.50 0.50 a-SHC Sal 0.05 b-SHC Sal 0.05 d-SHC Sal 0.05 g-SHC Sal 0.05 Chlordane Sal 0.10 4,4'-000 Sal 0.05 4,4'-00E Sal 0.05 4,4'-00T Sal 0.05 Oieldrin Sal 0.05 Endosulfan I Sal 0.05 Endosulfan II Sal 0.05 Endosulfan sulfate Sal 0.05 Endrin Sal 0.05 Endrin aldehyde Sal 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor Sal 0.05 Toxaphene Sal 2.00 Page 15 of 72

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770l4~09'="'-~14~44:-:-------------~3~03~9~A~mw~i:-le~r R~o-a~d-*~Su~l:-te~1~0'="'0- .A~U~a-nta~.G~A~30~3~6~0-Fax: (770l 409-1844 P.O. Box 88610

• AUanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/15/2007 ACL Sample #: 255920 Units: jJg/L Analyst: AM Analyte Result PQL 2,4-0 Sal 1.0 Oinoseb Sal 1.0 2,4,5-TP (Silvex) Sal 1.0 2,4,5-T Sal 1.0 Page 16 of 72

_.- .. __ ._ .... --~--._.---_._--.-- --- .~-----

Phone: (770)

I IACL 4~0~9-~1444~-------------~3~03~9~A~m-w~i~le-r Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

R='o-a~d-.":'Su~l~te~1~O~O A':"":t1:':""a-nta~.G='A~3~03~6~0-

-.

P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/0412007 Date Extracted: 06/11/2007 Date Analyzed: 06/25/2007 ACL Sample #: 255920 Units: 1J9/L Analyst: MA Analyte Result PQL 1,2-Dibromo-3-chloropropane SQL 0.20 1,2-Dibromoethane BQL 0.05 Page 17 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409*1444 3039 Amwller Road* Suite 100

• Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610

• Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Appendix II Metals (6010B/7470Al7841/7041)

Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

Date Analyzed: 06/13/2007 ACL Sample #: 255920 Units: j./g/L Analyst: SW/JR Analyte Result PQL Antimony BOl 0.006 Arsenic BOl 0.010 Barium 0.220 0.020 Beryllium 0.004 0.004 Cadmium BOl 0.005 Chromium 0.063 0.020 Cobalt BOl 0.050 Copper BOl 0.020 lead 0.031 0.010 Mercury 0.0026 0.0005 Nickel 0.036 0.020 Selenium BOl 0.040 Silver BOl 0.010 Thallium BOl 0.002 Tin BOl 0.025 Vanadium 0.054 0.050 Zinc 0.219 0.020 Page 18 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwller Road

• Suite 100

• Atlanta. GA 30360 Fax: (770) 409*1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-labs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Satsel Q!!!..

Sample 10 ACL# Analvte Matrix Result PQL Units Analyzed GWA-7/MW-7 255920 Cyanide (9012A) Water SOL 0.020 mg/l 06/13/2007 GWA-7/MW-7 255920 Sulfide (9034) Water Sal 1.0 mg/l 06/1212007 Page 19 of 72

IA CL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0~9-~1~444~--------------3~O""3~9""A-m-w"'i1-8r-R~o-a-d-.""'"S-u"ite-10~0-*-A-U"'a-nta-,G~A""'-3-0-36"0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel v.o. (5030B/8260B) - Appendix II Sample ID: GWA-7/MW-7Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

Date Analyzed: 06/14/2007 ACL Sample #: 255921 Units: IJg/L Analyst: ME Analyte Result PQL Analvte Result PQl Acetone Sal 100 Ethyl methacrylate Sal 10 Acetonitrile Sal 100 Ethylbenzene Sal 5 Acrolein Sal 100 2-Hexanone Sal 50 Acrylonitrile Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile Sal 100 Senzene Sal 5 Methyl bromide Sal 10 romochloromethane Sal 5 Methyl chloride Sal 10 Sromodichloromethane Sal 5 Methyl ethyl ketone Sal 100 Sromoform Sal 5 Methyl iodide Sal 5 Carbon disulfide Sal 5 Methyl methacrylate Sal 30 Carbon tetrachloride Sal 5 4-Methyl-2-pentanone Sal 50 Chlorobenzene Sal 5 Methylene bromide Sal 5 Chloroethane Sal 10 Methylene chloride Sal 5 Chloroform Sal 5 Naphthalene Sal 5 Chloroprene Sal 20 Propionitrile Sal 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane Sal 5 1,1,1,2-Tetrachloroethane Sal 5 1,2-Dibromoethane Sal 5 1,1,2,2-Tetrachloroethane Sal 5 trans-1 A-Dichloro-2-butene Sal 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene Sal 5 Toluene Sal 5 1,3-Dichlorobenzene Sal 5 1,1,1-Trichloroethane Sal 5 1A-Dichlorobenzene Sal 5 1,1,2-Trichloroethane Sal 5 Dichlorodifluoromethane Sal 5 Trichloroethene Sal 5 1,1-Dichloroethane Sal 5 Trichlorofluoromethane 109 5 1,2-Dichloroethane Sal 5 1,2,3-Trichloropropane Sal 5 1,1-Dichloroethene Sal 5 Vinyl acetate Sal 50 cis-1,2-Dichloroethene Sal 5 Vinyl chloride Sal 2 trans-1,2-Dichloroethene Sal 5 m,p-Xylene Sal 10 1,2-Dichloropropane Sal 5 o-Xylene Sal 5 1,3-Dichloropropane Sal 5

, 1.~.2-Dichloropropane Sal 15

'\~1, 1-Dichloropropene Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1 ,3-Dichloropropene Sal 5 Page 20 of 72

. _ **** _ _ _ _ _ e .. _ _ _ **.* _ _

• _ _

._ .. _------ _.- ._-

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0':"9-~1~444~--------------3~O~3~9-:A-m-w~1I~er~R=-o-a-:d~.~S~ui~te-1~0~0-.-:A~Ua-n~ta-.-:G~A~30~3~6~0-Fax: (770) 409-1844 P.O. Box 88610* AUanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/14/2007 ACL Sample #: 255921 Units: IJg/L Analyst: RB Analvte Result PQL 4-Chloro-3-methylphenol BOl 20 2-Chlorophenol BOl 10 m & p-Cresol BOl 10 o-Cresol BOl 10 2,4-Dichlorophenol BOl 10 2,6-Dichlorophenol BOl 10

!~~,4-DimethYIPhenol BOl 10

~,6-Dinitro-2-methylphenol BOl 50 2,4-Dinitrophenol BOl 50 2-Nitrophenol BOl 10 4-N itrophenol BOl 50 Pentachlorophenol BOl 50 Phenol BOl 10 2,3,4,6-Tetrachlorophenol BOl 10 2,4,5-Trichlorophenol BOl 10 2,4,6-Trichlorophenol BOl 10 Page 21 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road* Suite 100* Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 a-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/14/2007 ACL Sample #: 255921 Units: ,",gIL Analyst: RB Analyte Result PQL Analvte Result PQl Acenaphthene BOl 10 Dimethyl phthalate BOl 10 Acenaphthylene BOl 10 p-(Dimethylamino)azobenzene BOl 10 Acetophenone BOl 10 7,12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene BOl 20 3,3'-Dimethylbenzidine Sal 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene Sal 20 Anthracene Sal 10 2,4-Dinitrotoluene BOl 10 enzo(a)anthracene BOl 10 2,6-Dinitrotoluene Sal 10 Benzo(a)pyrene BOl 10 Diphenylamine Sal 10 Benzo(b)fluoranthene Sal 10 Disulfoton Sal 10 Benzo(g,h,i)perylene Sal 10 Ethyl methanesulfonate BOl 20 Benzo(k)fluoranthene Sal 10 Famphur BOl 20 Benzyl alcohol Sal 20 Fluoranthene BOl 10 Bis(2-chloroethoxy)methane BOl 10 Fluorene Sal 10 Bis(2-chloroethyl)ether BOl 10 Hexachlorobenzene Sal 10 Bis(2-ehloroisopropyl)ether BOl 10 Hexachlorobutadiene BOl 10 Bis(2-ethylhexyl)phthalate BOl 10 Hexachlorocyclopentadiene BOl 10 4-Bromophenyl phenyl ether BOl 10 Hexachloroethane BOl 10 Butyl benzyl phthalate BOl 10 Hexachloropropene Sal 10 p-Chloroaniline BOl 20 Indeno(1,2,3-cd)pyrene BOl 10 Chlorobenzilate Sal 10 Isodrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether BOl 10 Isosafrole Sal 10 Chrysene BOl 10 Kepone Sal 20 Di-n-butyl phthalate Sal 10 Methapyrilene BOl 100 Di-n-octyl phthalate BOl 10 Methyl methanesulfonate Sal 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a,h)anthracene Sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran Sal 10 2-Methylnaphthalene BOl 10 1,2-Dichlorobenzene Sal 10 Naphthalene Sal 10 1,3-Dichlorobenzene Sal 10 1,4-Naphthoquinone Sal 10 1f"l1 A-Dichlorobenzene Sal 10 1-Naphthylamine Sal 10

'~,3'-Dichlorobenzidine Sal 20 2-Naphthylamine Sal 10 Diethyl phthalate BOl 10 5-Nitro-o-toluidine Sal 10 Dimethoate Sal 10 2-Nitroaniline Sal 50 Page 22 of 72

- --_._---_ ... - -

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road* Suite 100

• Atlanta. GA 30360 Fax: (770) 409-1844 P.O. 80x 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistTylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/14/2007 ACL Sample #: 255921 Units: IJg/L Analyst: RB Analvte Result PQL 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine Sal 10 N-Nitrosodiethylamine Sal 20 N-Nitrosodimethylamine Sal 10 t.l-Nitrosodiphenylamine Sal 10 N-Nitrosodipropylamine Sal 10 N-Nitrosomethylethylamine Sal 10 N-Nitrosopiperidine Sal 20 N-Nitrosopyrrolidine Sal 40 Parathion Sal 20 Pentachlorobenzene Sal 10 Pentachloronitrobenzene Sal 20 Phenacetin Sal 20 Phenanthrene Sal 10 p-Phenylenediamine Sal 10 Phorate Sal 10 Pronamide Sal 10 Pyrene Sal 10 Safrole Sal 10 1,2,4,5-Tetrachlorobenzene Sal 10 Thionazin Sal 20 o-Toluidine Sal 10 1,2,4-Trichlorobenzene Sal 10 0,0,0-Triethyl phosphorothioate Sal 50 1,3,5-Trinitrobenzene Sal 10 Page 23 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road* Suite 100* Atlanta. GA 30360 Fax: (770) 409*1844 P.O. BOle: 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Pesticides/PCBs (8081A18082) - Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/20/2007 ACl Sample #: 255921 Units: ~g/L Analyst: AM Analyte Result Pgl Aldrin Sal 0.05 Arochlor-1016 Sal 0.50 Arochlor-1221 Sal 0.50 Arochlor-1232 Sal 0.50 Arochlor-1242 Sal 0.50

",Arochlor-1248 Sal 0.50 Qrochlor-1254 Sal 0.50 Arochlor-1260 Sal 0.50 a-SHC Sal 0.05 b-SHC Sal 0.05 d-SHC Sal 0.05 g-SHC Sal 0.05 Chlordane Sal 0.10 4,4'-000 Sal 0.05 4,4'*00E Sal 0.05 4,4'-00T Sal 0.05 Dieldrin Sal 0.05 Endosulfan I Sal 0.05 Endosulfan II Sal 0.05 Endosulfan sulfate Sal 0.05 Endrin Sal 0.05 Endrin aldehyde Sal 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor Sal 0.05 Toxaphene Sal 2.00 Page 24 of 72

\

IACLI Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~09~-~14~4~4-------------"!3~03~9~A~m-w~i~le-r R~o-a~d-.~S~ui~te-1~0~0- .A~U~a-nta~.G~A~30"!"'3~6""'0-P.O. Box 88610* AUanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/1112007 Date Analyzed: 06/15/2007 ACL Sample #: 255921 Units: IJg/L Analyst: AM Analyte Result PQl 2,4-0 Sal 1.0 Oinoseb Sal 1.0 2,4,5-TP (Silvex) Sal 1.0 2,4,5-T Sal 1.0 Page 25 of 72

IACL I 09~-....

Phone: (770) 4....

Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

14~4~4------------- ....3.... 03~9~A~m-w-i1~e-r R~o-a~d-* .... 00~*-A~l-la-nta-.G Su-ite--1....

P.O. Box 88610* Atlanta. GA 30356

....A~30..3....6....

0-e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Miscellaneous Organics (8011)

• Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/25/2007 ACl Sample #: 255921 Units: J,lg/L Analyst: MA Analyte Result PQl 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 26 of 72

IA CL 1~

Phone: (770) 409-1444 Fax: (770) 409-1844 AD_lr._~_N_C~......D~C_ll.....E_'M._I.....S_T_'RY_L_AB_S....,_IN__

3039 Amwiler Road* Suite 100* Atlanta. GA 30360 P.O. Box 88610* Atlanta. GA 30356 C.

e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Appendix II Metals (6010B/7470AJ7841/7041)

Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

Date Analyzed: 06/13/2007 ACL Sample #: 255921 Units: IJg/L Analyst: SW/JR Analyte Result PQL Antimony SOL 0.006 Arsenic SOL 0.010 Barium 0.207 0.020 Beryllium 0.004 0.004 Cadmium SOL 0.005 Chromium 0.063 0.020 Cobalt SOL 0.050 Copper SOL 0.020 Lead 0.030 0.010 Mercury 0.0047 0.0005 Nickel 0.034 0.020 Selenium SOL 0.040 Silver SOL 0.010 Thallium SOL 0.002 Tin SOL 0.025 Vanadium 0.051 0.050 Zinc 0.211 0.020 Page 27 of 72

IA CL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~09~-~14~4~4-------------~3~03~9~A~rnw~l\~e~rR~o-a~d-*~Su~lte~1~00~*-A~tl~a-nta~.G~A~30~3~6~0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356

) e-mail: acl@acl-Iabs.net www.advancedchemlslrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta. GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Satsel Q!1!.

Sample 10 ACl# Analyte Matrix Result PQL Units Analyzed GWA-7/MW-7 Dup 255921 Cyanide (9012A) Water Sal 0.020 mg/l 06/13/2007 GWA-7/MW-7 Dup 255921 Sulfide (9034) Water Sal 1.0 mg/L 06/12/2007 Page 28 of 72

IACLI Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0~9-~1~44~4~--------------S~O~S"!"'9~A-m-W~i1~er-R""o-a-d~.~S~u"ite-10"0-.-A"'t-la-n-ta- ....

G....

A-S...O-S-eo-P.O. Box 88610* Atlanta, GA SOS56 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Farry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsal v.o. (50308/82608) - Appendix II Sample ID: GWC-13/MW-13 Matrix: Water Date Sampled: 06/0412007 Date Extracted:

Date Analyzed: 06/14/2007 ACL Sample #: 255922 Units: jJg/L Analyst: ME Analyte Result PQL Analvte Result PQL Acetone Sal 100 Ethyl methacrylate Sal 10 Acetonitrile Sal 100 Ethylbenzene Sal 5 Acrolein Sal 100 2-Hexanone Sal 50 Acrylonitrile Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile Sal 100 Senzene Sal 5 Methyl bromide Sal 10 Sromochloromethane Sal 5 Methyl chloride Sal 10 Sromodichloromethane Sal 5 Methyl ethyl ketone Sal 100 Sromoform Sal 5 Methyl iodide Sal 5 Carbon disulfide Sal 5 Methyl methacrylate Sal 30 Carbon tetrachloride Sal 5 4-Methyl-2-pentanone Sal 50 Chlorobenzene 15 5 Methylene bromide Sal 5 Chloroethane Sal 10 Methylene chloride Sal 5 Chloroform Sal 5 Naphthalene Sal 5 Chloroprene Sal 20 Propionitrile Sal 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane Sal 5 1,1,1,2-Tetrachloroethane Sal 5 1,2-Dibromoethane Sal 5 1,1,2,2-Tetrachloroethane Sal 5 trans-1,4-Dichloro-2-butene Sal 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene Sal 5 Toluene Sal 5 1,3-Dichlorobenzene Sal 5 1,1,1-Trichloroethane Sal 5 1,4-Dichlorobenzene Sal 5 1,1,2-Trichloroethane Sal 5 Dichlorodifluoromethane Sal 5 Trichloroethene Sal 5 1,1-Dichloroethane 28 5 Trichlorofluoromethane 98 5 1,2-Dichloroethane Sal 5 1,2,3-Trichloropropane Sal 5 1,1-Dichloroethene Sal 5 Vinyl acetate Sal 50 cis-1,2-Dichloroethene 16 5 Vinyl chloride Sal 2 trans-1,2-Dichloroethene Sal 5 m,p-Xylene Sal 10 1,2-Dichloropropane Sal 5 o-Xylene Sal 5 1,3-Dichloropropane Sal 5 2,2-Dichloropropane Sal 15 1,1-Dichloropropene Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene Sal 5 Page 29 of 72

---.... -._-_... -~----, .. . ----, ... _-

IACLI Fal<: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0~9-~1"':"'44~4~------------~3~O~39~A~m-w-I~'le-r~R-oa-d~.""'!!S~u"!"!'ite~10~O~.~A~tl~a~nta~.

G~A~30~3~6~O-P.O. 801< 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 0711212007 Contact: Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06111/2007 Date Analyzed: 06/15/2007 ACl Sample #: 255922 Units: jJg/L Analyst: RB Analyte Result PQl 4-Chloro-3-methylphenol Sal 20 2-Chlorophenol Sal 10 m & p-Cresol Sal 10 o-Cresol Sal 10 2,4-Dichlorophenol Sal 10 2,6-Dichlorophenol Sal 10

,4-Dimethylphenol Sal 10 4,6-Dinitro-2-methylphenol Sal 50 2,4-Dinitrophenol Sal 50 2-Nitrophenol Sal 10 4-Nitrophenol Sal 50 Pentachlorophenol Sal 50 Phenol Sal 10

. 2,3,4,6-Tetrachlorophenol Sal 10 2,4 ,5-Trichlorophenol BOl 10 2,4,6-Trichlorophenol BOl 10 Page 30 of 72

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~O'='9-~1~44~4:---------------~3::":0~3'='9~A-m-w-::i1~er~R='o-a~d:-*~S:-u':":'ite~1 O::":O:-.~A:":'U:-a-nta:--.G':'A~3~0~36~0~

Fax: (770) 409*1844 P.O. Box 88610* AUanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta. GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/15/2007 ACL Sample #: 255922 Units: 1J9/L Analyst: RB Analyte Result PQL Analyte Result PQL Acenaphthene Sal 10 Dimethyl phthalate Sal 10 Acenaphthylene Sal 10 p-(Dimethylamino)azobenzene Sal 10 Acetophenone Sal 10 7,12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene Sal 20 3.3'-Dimethylbenzidine Sal 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene Sal 20 Anthracene Sal 10 2,4-Dinitrotoluene Sal 10 Senzo(a)anthracene Sal 10 2.6-Dinitrotoluene Sal 10 Senzo(a)pyrene Sal 10 Diphenylamine Sal 10 Senzo(b)fluoranthene Sal 10 Disulfoton Sal 10 Senzo(g, h,i)perylene Sal 10 Ethyl methanesulfonate Sal 20 Senzo(k)fluoranthene Sal 10 Famphur Sal 20 Senzyl alcohol Sal 20 Fluoranthene Sal 10 Sis(2-chloroethoxy)methane Sal 10 Fluorene Sal 10 Bis(2-chloroethyl)ether Sal 10 Hexachlorobenzene Sal 10 Sis(2-chloroisopropyl)ether Sal 10 Hexachlorobutadiene Sal 10 Sis(2-ethylhexyl)phthalate Sal 10 Hexachlorocyclopentadiene Sal 10 4-Sromophenyl phenyl ether Sal 10 Hexachloroethane Sal 10 Sutyl benzyl phthalate Sal 10 Hexachloropropene Sal 10 p-Chloroaniline Sal 20 Indeno(1,2,3-cd)pyrene Sal 10 Chlorobenzilate Sal 10 Isodrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether Sal 10 Isosafrole Sal 10 Chrysene Sal 10 Kepone Sal 20 Di-n-butyl phthalate Sal 10 Methapyrilene Sal 100 Di-n-octyl phthalate Sal 10 Methyl methanesulfonate Sal 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a, h)anthracene Sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran Sal 10 2-Methylnaphthalene Sal 10 1,2-Dichlorobenzene Sal 10 Naphthalene Sal 10 1,3-Dichlorobenzene Sal 10 1A-Naphthoquinone Sal 10

fl#~1*1l'\1 ,4-Dichlorobenzene Sal 10 1-Naphthylamine Sal 10

'\~,3'-Dichlorobenzidine Sal 20 2-Naphthylamine Sal 10 Diethyl phthalate Sal 10 5-Nitro-o-toluidine Sal 10 Dimethoate Sal 10 2-Nitroaniline Sal 50 Page 31 of 72

IACL I Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0':"'9-~144~4~------------~3~0':"'39~A~m-w~lIe-r~R-o-ad"!"'.~S~u~it-e~10"!""0~*~A~t1~a-nta-,

G~A~3"!"'03~6~0-P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta. GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/15/2007 ACl Sample #: 255922 Units: ~g/L Analyst: RB Analyte Result PQl 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine Sal 10 N-Nitrosodiethylamine Sal 20 Sal 10 C

N-Nitrosodimethylamine Cc, '\,N-Nitrosodiphenylamine Sal 10

.,' N-Nitrosodipropylamine Sal 10 N-Nitrosomethylethylamine 80l 10 N-Nitrosopiperidine Sal 20 N-N itrosopyrrolidine Sal 40 Parathion Sal 20 Pentachlorobenzene Sal 10 Pentachloronitrobenzene Sal 20 Phenacetin Sal 20 Phenanthrene Sal 10 p-Phenylenediamine Sal 10 Phorate Sal 10 Pronamide Sal 10 Pyrene Sal 10 Safrole Sal 10 1,2,4,5-Tetrachlorobenzene Sal 10 Thionazin Sal 20 o-Toluidine Sal 10 1,2,4-Trichlorobenzene Sal 10 o,o,o-Triethyl phosphorothioate Sal 50 1,3,5-Trinitrobenzene 80l 10 Page 32 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road

• Suite 100

• Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Pesticides/PCBs (8081A18082) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/20/2007 ACL Sample #: 255922 Units: ~g/L Analyst: AM Analvte Result PQl Aldrin Sal 0.05 Arochlor-1 016 Sal 0.50 Aroch lor-1221 Sal 0.50 Arochlor-1232 Sal 0.50 Arochlor-1242 Sal 0.50 Arochlor-1248 Sal 0.50 f',roch lor-1254 Sal 0.50 Arochlor-1260 Sal 0.50 a-SHC Sal 0.05 b-SHC Sal 0.05 d-SHC Sal 0.05 g-SHC Sal 0.05 Chlordane Sal 0.10 4,4'-00D Sal 0.05 4,4'-DOE Sal 0.05 4,4'-ODT Sal 0.05 Dieldrin Sal 0.05 Endosulfan I Sal 0.05 Endosulfan II Sal 0.05 Endosulfan sulfate Sal 0.05 Endrin Sal 0.05 Endrin aldehyde Sal 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor Sal 0.05 Toxaphene Sal 2.00 Page 33 of 72

IACLI Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~09"!"".-1444~-------------~3'!"03~9~A~mw-lI~er~R!""'o-a~d-. '!"Su~ll-e"""'!1'!"00"!"".-A~tl""a-nta-.G!""'A~30"'3""6'!"0-P.O. Box 88610

• Atlanta. GA 30356 e-mail: acl@acl-Iabs.nel www.advancedchemislrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt BatseJ Chlorinated Herbicides (8151A) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/15/2007 ACL Sample #: 255922 Units: ~g/L Analyst: AM Analyte Result PQL 2,4-0 Sal 1.0 Oinoseb Sal 1.0 2,4,5-TP (Silvex) Sal 1.0 2,4,5-T Sal 1.0 Page 34 of 72

-- --------~------------------ --------------- - --

Phone: (770)

I IACL 4~09=--~1444'="'="'=-------------~3~03~9~A~m-w"":'lI~e~r ADVANCED CHEMISTRY LABS, INC.

R:"o-a-:d-.~su-:ite~1~OO~.A~U':""a-nta~.G~A~30~3~6":"0-Fax: (770) 409-1844 P.O. Box 88610* AUanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/25/2007 ACl Sample #: 255922 Units: ~g/L Analyst: MA Analyte Result Pgl 1,2-Dibromo-3-chloropropane sal 0.20 1,2-Dibromoethane sal 0.05 Page 35 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road* Suite 100* Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610

• Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Appendix II Metals (6010Bn470Al784117041)

Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

Date Analyzed: 06/13/2007 ACL Sample #: 255922 Units: ~g/L Analyst: SW/JR Analyte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Barium 0.061 0.020 Beryllium Sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020

Cobalt Sal 0.050 Copper Sal 0.020 Lead Sal 0.010 Mercury BOl 0.0005 Nickel Sal 0.020 Selenium Sal 0.040 Silver Sal 0.010 Thallium Sal 0.002 Tin Sal 0.025 Vanadium Sal 0.050 Zinc 0.089 0.020 Page 36 of 72

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (710) 4~0':"'9-"":"'14":"'44~------------~3~03~9~A~m-w~I':""'le-r R~o-a~d~*~S~ul':""'te~1~0':"'0-*A~t1~a-nta~,G~A~3~03~6~O-Fax: (710) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Date Sample ID ACL# Analvte Matrix Result PQL Units Analyzed GWC-13/MW-13 255922 Cyanide (9012A) Water Sal 0.020 mg/l 06/13/2007 GWC-13/MW-13 255922 Sulfide (9034) Water BOl 1.0 mg/l 06/1212007 Page 37 of 72

IACLI Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4--0~9-~1""!"44~4~-------------""'!3!""'!O""'!'3~9~A-m-W~il~er""'!R~o-a""'!d~.~S-u'!'"'ite-10!""'!0-.-A"t1!""a-nta-,G"'!......

P.O. Box 88610* Atlanta, GA 30356

"'A 3... 60 -

0"'!"'3....

e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel v.a. (5030B/8260B) - Appendix II Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

Date Analyzed: 0611412007 ACL Sample #: 255923 Units: IJg/L Analyst: ME Analyte Result PQL Analyte Result PaL Acetone Sal 100 Ethyl methacrylate Sal 10 Acetonitrile Sal 100 Ethylbenzene Sal 5 Acrolein Sal 100 2-Hexanone Sal 50 Acrylon itrile Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile Sal 100 Senzene Sal 5 Methyl bromide Sal 10

)Sromochloromethane Sal 5 Methyl chloride Sal 10 Sromodichloromethane Sal 5 Methyl ethyl ketone Sal 100 Sromoform Sal 5 Methyl iodide Sal 5 Carbon disulfide Sal 5 Methyl methacrylate Sal 30 Carbon tetrachloride Sal 5 4-Methyl-2-pentanone Sal 50 Chlorobenzene Sal 5 Methylene bromide Sal 5 Chloroethane Sal 10 Methylene chloride Sal 5 Chloroform Sal 5 Naphthalene Sal 5 Chloroprene Sal 20 Propionitrile Sal 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane Sal 5 1,1,1,2-Tetrachloroethane Sal 5 1.2-Dibromoethane Sal 5 1,1.2,2-Tetrachloroethane Sal 5 trans-1,4-Dichloro-2-butene Sal 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene Sal 5 Toluene Sal 5 1,3-Dichlorobenzene Sal 5 1,1,1-Trichloroethane Sal 5 1A-Dichlorobenzene Sal 5 1,1.2-Trichloroethane Sal 5 Dichlorodifluoromethane Sal 5 Trichloroethene Sal 5 1,1-Dichloroethane Sal 5 Trichlorofluoromethane Sal 5 1,2-Dichloroethane Sal 5 1,2.3-Trichloropropane Sal 5 1,1-Dichloroethene Sal 5 Vinyl acetate Sal 50 cis-1,2-Dichloroethene Sal 5 Vinyl chloride Sal .2 trans-1,2-Dichloroethene Sal 5 m,p-Xylene Sal 10 1,2-Dichloropropane Sal 5 o-Xylene Sal 5 1,3-Dichloropropane Sal 5 2,2-Dichloropropane Sal 15 1,1-Dichloropropene Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1 ,3-Dichloropropene Sal 5 Page 38 of 72

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone:(770)4~09~-~1444~~------------'"""""!3""!"0~39~A~m-w-i~le-r~R-oa-d~.-S~u"!"'it-e-10"'0"'.-A"U"'a-nta-,G"'A""'-3-03"6 Fax: (770) 409-1844 P.O. Box 88610

• AUanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF#3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr, Kurt Batsel Acid Extractables (8270C) - Appendix II Sample ID: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/15/2007 ACl Sample #: 255923 Units: IJg/l Analyst: RB Analyte Result PQl 4-Chloro-3-methylphenol Sal 20 2-Chlorophenol Sal 10 m & p-Cresol Sal 10 o-Cresol Sal 10 2,4-Dichlorophenol BOl 10 I

.r .. .'

Q 2,6-Dichlorophenol

,4-Dimethylphenol Sal BOl 10 10

}4,6-Dinitro-2-methylphenol Sal 50 2,4-Dinitrophenol Sal 50 2-Nitrophenol Sal 10 4-Nitrophenol Sal 50 Pentachlorophenol Sal 50 Phenol Sal 10 2,3,4,6-Tetrachlorophenol Sal 10 2,4,5-Trichlorophenol Sal 10 2,4,6-Trichlorophenol Sal 10 Page 39 of 72

IACL I Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~O:'::'9--:::1"':4':'44:---------------3=:0::":3~9-:A~m-w-:i:-le-r ~R-oa-d~.-:S:-U~it-e~1=:00~.-A~t~la-n":""ta-.~G~A~3~0~3~60~

P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06111/2007 Date Analyzed: 06115/2007 ACl Sample #: 255923 Units: ~g/L Analyst: RB Analyte Result PQl Analvte Result PQl Acenaphthene SaL 10 Dimethyl phthalate SOL 10 Acenaphthylene SOL 10 p-(Dimethylamino)azobenzene SOL 10 Acetophenone SOL 10 7,12-Dimethylbenz(a)anthracene SQL 10 2-Acetylaminofluorene SaL 20 3,3'-Dimethylbenzidine SQL 10 4-Aminobiphenyl SQL 20 m-Dinitrobenzene SQL 20 Anthracene SQL 10 2,4-Dinitrotoluene SQL 10 enzo(a)anthracene SaL 10 2,6-Dinitrotoluene SOL 10 enzo(a)pyrene SOL 10 Diphenylamine SOL 10 Senzo(b)fluoranthene SOL 10 Disulfoton SaL 10 Senzo(g, h, i)perylene SaL 10 Ethyl methanesulfonate SOL 20 Senzo(k)fluoranthene SOL 10 Famphur SQL 20 Senzyl alcohol SQL 20 Fluoranthene SaL 10 Sis(2-chloroethoxy)methane SaL 10 Fluorene SOL 10 Sis(2-chloroethyl)ether SaL 10 Hexachlorobenzene SOL 10 Sis(2 -chloroisopropyl)ether SQL 10 Hexachlorobutadiene SaL 10 Sis(2-ethylhexyl)phthalate SOL 10 Hexachlorocyclopentadiene SQL 10 4-Sromophenyl phenyl ether SaL 10 Hexachloroethane SQL 10 Sutyl benzyl phthalate SOL 10 Hexachloropropene SOL 10 p-Chloroaniline SaL 20 Indeno(1,2,3-cd)pyrene SOL 10 Chlorobenzilate SaL 10 Isodrin SOL 20 2-Chloronaphthalene SOL 10 Isophorone SQL 10 4-Chlorophenyl phenyl ether SaL 10 Isosafrole SQL 10 Chrysene SQL 10 Kepone SOL 20 Di-n-butyl phthalate SQL 10 Methapyrilene SOL 100 Di-n-octyl phthalate SOL 10 Methyl methanesulfonate SQL 10 Diallate SOL 10 Methyl parathion SOL 10 Dibenz(a, h)anthracene SQL 10 3-Methylcholanthrene SQL 10 Dibenzofuran SOL 10 2-Methylnaphthalene SQL 10 1,2-Dichlorobenzene SQL 10 Naphthalene SOL 10 1,3-Dichlorobenzene SQL 10 1,4-Naphthoquinone SQL 10 1,4-Dichlorobenzene BOl 10 1-Naphthylamine BOl 10

\ ,3'-Dichlorobenzidine SQL 20 2-Naphthylamine SQL 10 Diethyl phthalate SQL 10 5-Nitro-o-toluidine SOL 10 Dimethoate SOL 10 2-Nitroaniline SQL 50 Page 40 of 72

.' .. - -._ .._---.-_.. _- ... _---_.._-_ ..._----._- -------- -'. -_. --_.,,--

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0'='9-~1~44~4:---------------~3~0~3~9~A-m-w~il:-e-r Fax: (770) 409-1844

~Ro-a-d:-*~S:-u~it-e~10~0:-.-A~U~a-n~ta-,~G":"A~3~0~3~60~

P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta GA 30068-0000 I Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample ID: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/15/2007 ACL Sample #: 255923 Units: IJg/L Analyst: RB Analyte Result PQL 3-Nitroaniline SOL 50 4-Nitroaniline SOL 20 Nitrobenzene SOL 10 N-Nitroso-di-n-butylamine SOL 10 N-Nitrosodiethylamine SOL 20 N-Nitrosodimethylamine SOL 10 C

t****. **.~-NitrosodiPhenYlamine

..... N-Nitrosodipropylamine N-Nitrosomethylethylamine SOL SaL SOL 10 10 10 N-Nitrosopiperidine SOL 20 N-Nitrosopyrrolidine SOL 40 Parathion SOL 20 Pentachlorobenzene SOL 10 Pentach loronitrobenzene SOL 20 Phenacetin SOL 20 Phenanthrene SaL 10 p-Phenylenediamine SOL 10 Phorate SOL 10 Pronamide SOL 10 Pyrene SOL 10 Safrole SOL 10 1,2,4,5-Tetrachlorobenzene SOL 10 Thionazin SOL 20 0- Toluidine SOL 10 1,2,4-Trichlorobenzene SaL 10 0,0,0- Triethyl phosphorothioate SOL 50 1,3,5-Trinitrobenzene SOL 10 Page 41 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409*1444 3039 Amwiler Road* Suite 100* Atlanta, GA 30360 Fax: (770) 409-1844 P.O. Box 88610

• Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Pesticides/PCBs (8081A18082) - Appendix II Sample 10: GWA-15/MW*15 Matrix: Water Date Sampled: 06/0412007 Date Extracted: 06/11/2007 Date Analyzed: 06/20/2007 ACL Sample #: 255923 Units: ~g/L Analyst: AM Analyte Result PQL Aldrin Sal 0.05 Arochlor-1016 Sal 0.50 Arochlor-1221 Sal 0.50 Aroch lor-1232 Sal 0.50 Arochlor-1242 Sal 0.50 Arochlor-1248 Sal 0.50

~rochlor-1254 Sal 0.50 Arochlor-1260 Sal 0.50 a-SHe Sal 0.05 b-SHC Sal 0.05 d-SHC Sal 0.05 g-SHC Sal 0.05 Chlordane Sal 0.10 4,4'-DDD Sal 0.05 4,4'-DDE Sal 0.05 4,4'-DDT Sal 0.05 Dieldrin Sal 0.05 Endosulfan I Sal 0.05 Endosulfan II Sal 0.05 Endosulfan sulfate Sal 0.05 Endrin Sal 0.05 Endrin aldehyde Sal 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor Sal 0.05 Toxaphene Sal 2.00 Page 42 of 72

Phone: (770)

I IACL 4~0~9.~14~4:-::4-------------~3~03~9~A:-m-W-:I~le-r ADVANCED CHEMISTRY LABS, INC.

R:'o-a-:d~*"=S-:ui~te~1~O~O A':"':tl~a-nta~.G:"A':"""":'3~03~6~0-

-.

Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/15/2007 ACL Sample #: 255923 Units: ~g/L Analyst: AM Analyte Result PQL 2,4-D Sal 1.0 Dinoseb Sal 1.0 2,4,5-TP (Silvex) Sal 1.0 2,4,5-T Sal 1.0 Page 43 of 72

IACL I 09~-....

Phone: (770) 4....

Fax: (770) 409*1844 14..4....

ADVANCED CHEMISTRY LABS, INC.

4 - - - - - - - - - - - - -....S-0S~9-A....m-w-i1-e-rR

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Su-j-te-1...

0-0-.A"t1-a-nta-,G"'A--S-OS"'6 P.O. Box 88610* Atlanta, GA SOS56 e-mail: acl@acl-Iabs.net www.advancedchemislrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/25/2007 ACL Sample #: 255923 Units: ~g/L Analyst: MA Analvte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 44 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409*1444 3039 Amwller Road* Suite 100

• Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-labs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Appendix II Metals (6010B/7470Al7841/7041)

Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

Date Analyzed: 06/13/2007 ACL Sample #: 255923 Units: IJg/L Analyst: SW/JR Analyte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Sarium sal 0.020 Seryllium sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020

. Cobalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010 Mercury Sal 0.0005 Nickel 0.036 0.020 Selenium Sal 0.040 Silver SaL 0.010 Thallium Sal 0.002 Tin Sal 0.025 Vanadium Sal 0.050 Zinc 0.442 0.020 Page 45 of 72

IA CL 1.........

Phone: (770) 409-1444 Fax: (770) 409-1844 AD_v:_i1_N_c""""!"'E~1J~C-'H~E. . .M~I~S~T-'R

. Y""'!""LAB S~,""""!"IN~C.

.......

3039 Arnwiler Road* Suite 100* Atlanta. GA 30360 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Date Sample 10 ACL# Analvte Matrix Result PQL Units Analyzed GWA-15/MW-15 255923 Cyanide (9012A) Water Sal 0.020 mg/l 06/13/2007 GWA-15/MW-15 255923 Sulfide (9034) Water Sal 1.0 mg/l 06/12/2007 Page 46 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road

• Suite 100

• Atlanta, GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel v.o. (50308/82608) - Appendix I Sample 10: EO-Blank Matrix: Water Date Sampled: 06/05/2007 Date Extracted:

Date Analyzed: 06/14/2007 ACL Sample #: 255924 Units: ~g/L Analyst: ME Analvte Result PQL Analvte Result PQL Acetone BOl 100 Styrene BOl 5 Acrylonitrile BOl 50 1,1,1,2-Tetrachloroethane BOl 5 Benzene BOl 5 1,1,2,2-Tetrachloroethane BOl 5 Bromoch loromethane BOl 5 Tetrachloroethene BOl 5 Bromodichloromethane BOl 5 Toluene BOl 5 Bromoform BOl 5 1,1,1-Trichloroethane BOl 5 Ccarbon disulfide BOl 5 1,1,2-Trichloroethane BOl 5

', .. ' Carbon tetrachloride BOl 5 Trichloroethene BOl 5 Ch lorobenzene BOl 5 Trichlorofluoromethane BOl 5 Chloroethane BOl 10 1,2,3-Trichloropropane BOl 5 Chloroform BOl 5 Vinyl acetate BOl 50 1,2-Dibromo-3-chloropropane BOl 20 Vinyl chloride BOl 2 Dibromochloromethane BOl 5 m,p-Xylene BOl 10 1,2-Dibromoethane BOl 5 o-Xylene BOl 5 trans-1,4-Dichloro-2-butene BOl 10 1,2-Dichlorobenzene BOl 5 1A-Dichlorobenzene BOl 5 1,1-Dichloroethane BOl 5 1,2-Dichloroethane BOl 5 1,1-Dichloroethene BOl 5 cis-1,2-Dichloroethene BOl 5 trans-1,2-Dichloroethene BOl 5 1,2-Dichloropropane BOl 5 cis-1,3-Dichloropropene BOl 5 trans-1,3-Dichloropropene BOl 5 Ethylbenzene BOl 5 2-Hexanone BOl 50 Methyl bromide BOl 10 Methyl chloride BOl 10 Methyl ethyl ketone BOl 100 Methyl iodide BOl 5

-Methyl-2-pentanone BOl 50 Methylene bromide BOl 5 Methylene chloride BOl 5 Page 47 of 72

- - - - - - - ---

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwller Road

• Suite 100

• Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: EO-Blank Matrix: Water Date Sampled: 06/05/2007 Date Extracted: 06/11/2007 Date Analyzed: 06/25/2007 ACL Sample #: 255924 Units: ~g/L Analyst: MA Analyte Result PQl 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 48 of 72

IACL I ADVANCED CHEMISTRY LABS. INC.

Phone: (770) 4~09=--~14~4~4-------------"=3~03~9~A~m-w~lI~er~R=-o-a""':'d-* ~Su""'!'ite~1~00~.-A~tl~a~nta~.G~A~30~3~6"!"'0-Fax: (770) 409*1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advsncedchemlslrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07112/2007 Contact: Mr. Kurt Batsel Appendix I Metals (60108/7841/7041)

Sample 10: EO-Blank Matrix: Water Date Sampled: 06/05/2007 Date Extracted:

Date Analyzed: 06113/2007 ACl Sample #: 255924 Units: mg/L Analyst: SW Analyte Result Pgl Antimony SOL 0.006 Arsenic SOL 0.010 Sarium 0.030 0.020 Beryllium SOL 0.004 Cadmium SOL 0.005 Chromium SOL 0.020 Cobalt SOL 0.050 Copper SOL 0.020 lead SOL 0.010 Nickel SOL 0.020 Selenium SOL 0.040 Silver SOL 0.010 Thallium SOL 0.002 Vanadium SOL 0.050 Zinc SOL 0.020 Page 49 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road

• Suite 100

• AUanta. GA 30360 Fax: (770) 409*1844 P.O. Box 88610* AUanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Date Sample 10 ACL# Analvte Matrix Result PQL Units AnalYZed EO-Blank 255924 Mercury (7470A) Water BOl 0.0005 mg/l 06115/2007 Page 50 of 72

IA CL 1~~

Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_Ji:_:4_Ni_C~'ED~C_'Il,! ,-E~'M~IS~T~'R-"!"Y! ",! , ,LA~B~S:~,l~7Vi~C 3039 Amwiler Road, Suite 100, Atlanta, GA 30360 P. O. Box 88610, Atlanta, GA 30356 e-mail: acl@acl-Iabs.net QUALITY CONTROL SECTION Page 51 of 72

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone:(770)4~09::"'-~1444~--------------:3~03~9~A=-m-w~i:-le~rR="o-a"":d-.':'Su"":lt=-e"":1~0'::"0-.A':"":t1':""a-nta~.G="A~30~3~6~0-Fax: (770) 409-1844 P.O. Box 88610. Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/0812007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel V.O. (50308/82608) - Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water Oibromofluoromethane 1,2-0Ichloroethane-d4 Toluene-d8 4-Bromofluorobenzene (77-137) (72-138) (84-122) (77-125)

ACL Sample #

255920 90 97 95 84 255921 91 93 97 82 255922 90 93 96 82 255923 86 94 94 82

• • Matrix Interference DO=Diluted Out Page 52 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409*1444 3039 Amwiler Road* Suite 100

• AUanta, GA 30360 Fax: (770) 409-1844 P.O. Box 88610

• AUanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 0711212007 Contact: Mr. Kurt Batsel V.O, (50308/82608) - Appendix I SURROGATE PERCENT RECOVERY

SUMMARY

Water Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene (77-137) (72-138) (84-122) (77-125)

ACLSample#

255918 86 96 97 86 255919 90 95 95 86 255924 89 98 99 85

• • Matrix Interference DO=Diluted Out Page 53 of 72

IA CL I Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4:'::'0'::"9-~1"':"'44~4~-------------~3~0:'::'39'::""':'A-m-w~i1-er~R~0-a~d-.~S~ui:":"'te-1~O~O~.~A~t1~an~ta~,

G~A~3~03~6~0-P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel v.o. (5030B/8260B) - Appendix II Sample 10: ---------_. Matrix: Water Date Sampled: -----------

Date Extracted:

Date Analyzed: 06/14/2007 ACL Sample #: Blank Units: ~g/L Analyst: ME Analyte Result PQL Analvte Result PQL Acetone Sal 100 Ethyl methacrylate Sal 10 Acetonitrile Sal 100 Ethylbenzene Sal 5 Acrolein Sal 100 2-Hexanone Sal 50 Acrylonitrile Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile Sal 100 Senzene Sal 5 Methyl bromide Sal 10 Bromochloromethane BOl 5 Methyl chloride Sal 10 Sromodichloromethane Sal 5 Methyl ethyl ketone Sal 100 Bromoform Sal 5 Methyl iodide Sal 5 Carbon disulfide Sal 5 Methyl methacrylate Sal 30 Carbon tetrachloride Sal 5 4-Methyl-2-pentanone Sal 50 Chlorobenzene Sal 5 Methylene bromide Sal 5 Chloroethane Sal 10 Methylene chloride Sal 5 Chloroform Sal 5 Naphthalene Sal 5 Chloroprene Sal 20 Propionitrile Sal 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane Sal 5 1,1,1,2-Tetrachloraethane Sal 5 1,2-Dibromoethane Sal 5 1,1,2,2-Tetrachloroethane Sal 5 trans-1 A-Dichloro-2-butene Sal 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene Sal 5 Toluene Sal 5 1,3-Dichlorobenzene Sal 5 1,1,1-Trichloroethane Sal 5 1A-Dichlorobenzene Sal 5 1,1,2-Trichloroethane Sal 5 Dichlorodifluoromethane Sal 5 Trich loroethene Sal 5 1,1-Dichloroethane Sal 5 Trich lorofluoromethane Sal 5 1,2-Dichloroethane BOl 5 1,2,3-Trichloropropane Sal 5 1,1-Dichloroethene Sal 5 Vinyl acetate Sal 50 cis-1,2-Dichloroethene Sal 5 Vinyl chloride BOl 2 trans-1,2-Dichloroethene Sal 5 m,p-Xylene Sal 10 1,2-Dichloropropane Sal 5 o-Xylene Sal 5 1,3-Dichloropropane Sal 5

~2.2-Dichloropropane Bal 15

~1 ,1-Dichloropropene Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene BOl 5 Page 54 of 72

_ _

-' . . ..._-- ._._---_. -_.- - _.-

ADVANCED CHEMISTRY LABS, INC.

GC/MS UNIT # 3 WATER VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Analysis Date: 06-14-07 Sample ID: 255916-1 SPIKE SAMPLE MS MS ac.

ADDED CONCENTRATION CON CENTRATION  % LIMITS COMPOUND (~g/L) (~g/L) (~g/L) REC # REC.

1,1-dichloroethene 20.0 0.0 22.5 113 (54-144) benzene 20.0 0.0 21.2 106 (82-132) trichloroethene 20.0 0.0 20.4 102 (73-128) toluene 20.0 0.0 20.9 105 (83-130) chlorobenzene 20.0 0.0 22.4 112 (82-123)

SPIKE MSD MSD ADDED CONCENTRATION  %  % ac LIMITS COMPOUND (fJg/L) (fJg/L) REC # RPD # RPD REC.

1,1-dichloroethene 20.0 21.3 107 5 14 (54-144) benzene 20.0 21.1 105 1 14 (82-132) trich loroethene 20.0 20.9 105 3 14 (73-128) toluene 20.0 20.9 105 0 13 (83-130) chlorobenzene 20.0 22.3 112 0 13 (82-123)

1. Column to be used to flag recovery and RPD values with an asterisk

• Values outside of ac limits RPD: 0 out of 5 outside limits Spike Recovery: 0 out of 10 outside limits Comments:

Page 55 of 72

Phone: (770)

I IACL 4~09=--~144~4-------------~3~03::":9~A~m-w~il~er~R=-o-a""':'d-*

Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

S=-u""':'it~e""':'1~OO=-*~A:"":'U:-a~nta~.~G~A~30::":3~60~

P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water Phenol-d6 2-Fluorophenol 2,4,6-Tribromophenol (8.50) (8-58) (10.123)

ACL Sample #

255920 13 22 50 255921 12 24 46 255922 19 25 49 255923 14 25 49

... Matrix Interference DO=Diluted Out Page 56 of 72

IACLIPhone: (770) 409-1444 Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

3039 Amwiler Road* Suite 100

• Atlanta, GA 30360 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle IF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 0711212007 Contact: Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample 10: Matrix: Water Date Sampled:

Date Extracted: 06/1112007 Date Analyzed: 06/14/2007 ACL Sample #: Blank Units: ~g/L Analyst: RB Analyte Result PQL 4-Chloro-3-methylphenol SCl 20 2-Chlorophenol SCl 10 m & p-Cresol SCl 10 o-Cresol SCl 10 2,4-Dichlorophenol SCl 10 2,6-Dichlorophenol BCl 10

\2,4-Dimethylphenol SCl 10 4,6-Dinitro-2-methylphenol BCl 50 2,4-DinitrophenoI BCl 50 2-Nitrophenol SCl 10 4-N itrophenol BCl 50 Pentachlorophenol BCl 50 Phenol SCl 10 2,3,4,6-Tetrachlorophenol BCl 10 2,4,5-Trichlorophenol SCl 10 2,4,6-Trichlorophenol SCl 10 Page 57 of 72

ADVANCED CHEMISTRY LABS, INC.

SEMI-VOL GC/MS UNIT #1 ACID EXTRACTABLES (8270C)

WATER SEMI-VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Sequence Date: 06-14-07 Matrix Spike - Sample No.: 255909 195 SPIKE SAMPLE MS MS ac.

COMPOUND ADDED CONCENTRATION CONCENTRATION  % LIMITS (lJg/L) (1J9/L) (lJg/L) REC # REC.

Pentachlorophenol 200 0 26 13 9-103)

Phenol 200 0 46 23 12-89) 2-Chlorophenol 200 0 69 35 27-123) 4-Chloro-3-methylphenol 200 0 117 59 23-97) 4-Nitrophenol 200 0 42 21 10-80)

SPIKE MSD MSD ac LIMITS COMPOUND ADDED CONCENTRATION  %  %

(lJg/L) (lJg/L) REC # RPD # RPD REC.

Pentachlorophenol 200 30 15 14 50 9-103)

Phenol 200 49 25 6 42 12-89) 2-Chlorophenol 200 71 36 3 40 27-123) 4-Chloro-3-methylphenol 200 124 62 6 42 23-97) 4-Nitrophenol 200 39 20 7 50 10-80)

1. Column to be used to flag recovery and RPD values with an asterisk

• Values outside of QC limits RPD: 0 out of 5 outside limits Spike Recovery: 0 out of 10 outside limits Comments:

Page 58 of 72

IA CL I Fax: (770) 409*1844 ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~09:=--~14~4~4------------~3~03~9-::A~mw~i1e-r~R~o-ad~.~S~u~ite-1~0~0-. A~U~a-n~ta-.G~A~30~3~6~0-P.O. Box 88610

• AUanta. GA 30356 e-mall: acl@acl-Iabs.net www.advancedchemistryJabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 (28-87) (25-106) (32-135)

ACLSample#

255920 54 46 42 255921 49 47 42 255922 54 51 43 255923 66 49 37

• • Matrix Interference DO=Diluted Out Page 59 of 72

IA CL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0~9-~1~444~-------------~3~0~3~9~A-m-w~i1~er~R~O-a~d~.~S~u~ite~10~0~.~A~t~la-nta-.G~A~3~0""36~0~

Fax: (770) 409-1844 P.O. Box 88610. Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta. GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C)

• Appendix II Sample 10: ----------- Matrix: Water Date Sampled: -----------

Date Extracted: 06/11/2007 Date Analyzed: 06/14/2007 ACl Sample #: Blank Units: ~g/L Analyst: RB Analyte Result PQl Analyte Result PQl Acenaphthene Sal 10 Dimethyl phthalate Sal 10 Acenaphthylene Sal 10 p-(Dimethylamino)azobenzene Sal 10 Acetophenone Sal 10 7,12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene Sal 20 3,3'-Dimethylbenzidine Sal 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene Sal 20

(~ Anthracene Sal 10 2,4-Dinitrotoluene Sal 10 USenzo(a)anthracene Sal 10 2,6-Dinitrotoluene BOl 10 Senzo(a)pyrene Sal 10 Diphenylamine Sal 10 Senzo(b)fluoranthene Sal 10 Disulfoton Sal 10 Benzo(g, h, i)perylene Sal 10 Ethyl methanesulfonate Sal 20 Benzo(k)fluoranthene Sal 10 Famphur Sal 20 Senzyl alcohol Sal 20 Fluoranthene Sal 10 Sis(2-chloroethoxy)methane Sal 10 Fluorene Sal 10 Sis(2-chloroethyl)ether Sal 10 Hexachlorobenzene Sal 10 Sis(2-chloroisopropyl)ether Sal 10 Hexachlorobutadiene Sal 10 Bis(2-ethylhexyl)phthalate Sal 10 Hexachlorocyclopentadiene Sal 10 4-Sromophenyl phenyl ether Sal 10 Hexachloroethane Sal 10 Sutyl benzyl phthalate Sal 10 Hexachloropropene Sal 10 p-Chloroaniline Sal 20 Indeno(1,2,3-cd)pyrene Sal 10 Chlorobenzilate Sal 10 IsOOrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether Sal 10 Isosafrole Sal 10 Chrysene Sal 10 Kepone Sal 20 Di-n-butyl phthalate Sal 10 Methapyrilene Sal 100 Di-n-octyl phthalate Sal 10 Methyl methanesulfonate Sal 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a, h)anthracene Sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran Sal 10 2-Methylnaphthalene Sal 10 1,2-Dichlorobenzene Sal 10 Naphthalene Sal 10 1,3-Dichlorobenzene Sal 10 1,4-Naphthoquinone Sal 10

,1,4-Dichlorobenzene Sal 10 1-Naphthylamine BOl 10 i3,3'-Dichlorobenzidine SOL 20 2-Naphthylamine Sal 10 Diethyl phthalate Sal 10 5-Nitro-o-toluidine Sal 10 Dimethoate Sal 10 2-Nitroaniline Sal 50 Page 60 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road

• Suite 100

• Atlanta, GA 30360 Fax: (770) 409*1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample ID: Matrix: Water Date Sampled:

Date Extracted: 06/11/2007 Date Analyzed: 06/14/2007 ACL Sample #: Blank Units: jJg/L Analyst: RB Analyte Result Pgl 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine Sal 10 N-Nitrosodiethylamine Sal 20 N-Nitrosodimethylamine Sal 10 N-Nitrosodiphenylamine BOl 10 N-Nitrosodipropylamine Sal 10 N-Nitrosomethylethylamine BOl 10 N-Nitrosopiperidine Sal 20 N-Nitrosopyrrolidine Sal 40 Parathion Sal 20 Pentachlorobenzene Sal 10 Pentachloronitrobenzene Sal 20 Phenacetin Sal 20 Phenanthrene Sal 10 p-Phenylenediamine Sal 10 Phorate Sal 10 Pronamide BOl 10 Pyrene Sal 10 Safrole Sal 10 1,2.4,5-Tetrachlorobenzene Sal 10 Thionazin Sal 20 o-Toluidine Sal 10 1,2,4-Trichlorobenzene Sal 10 o.o,o-Triethyl phosphorothioate Sal 50 1.3.5-Trinitrobenzene Sal 10 Page 61 of 72

ADVANCED CHEMISTRY LABS, INC.

SEMI-VOL GC/MS UNIT # 1 BASE/NEUTRAL EXTRACTABLES (8270C)

WATER SEMI-VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Sequence Date: 06-14-07 Matrix Spike - Sample No.: 255909 SPIKE SAMPLE MS MS ac.

ADDED CONCENTRATION CONCENTRATION  % LIMITS COMPOUND (~g/L) (~g/L) (~g/L) REC # REC.

1,2,4-Trichlorobenzene 100 0 43 43 39-98)

Acenaphthene 100 0 48 48 46-118) 2A-Dinitrotoluene 100 0 51 51 24-96)

Di-n-butyl phthalate 100 0 60 60 11-117 Pyrene 100 0 45 45 26-127 N-Nitrosodi-n-propylamine 100 0 49 49 41-116 1A-Dichlorobenzene 100 0 51 51 36-97)

SPIKE MSD MSD ADDED CONCENTRATION  %  % ac LIMITS COMPOUND (~g/L) (lJg/L) REC # RPD # RPD REC.

1,2,4-Trichlorobenzene 100 55 55 24 28 39-98)

Acenaphthene 100 49 49 2 31 46-118) 2,4-Dinitrotoluene 100 56 56 9 38 24-96)

Di-n-butvt phthalate 100 56 56 7 40 11-117 Pyrene 100 44 44 2 31 26-127 N-Nitrosodi-n-propylamine 100 67 67 31 38 41-116 1A-Dichlorobenzene 100 45 45 13 28 36-97)

1. Column to be used to flag recovery and RPD values with an asterisk

• Values outside of ac limits RPD: 0 out of 7 outside limits Spike Recovery: 0 out of 14 outside limits Comments:

Page 62 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road* Suite 100

• Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610* AUanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF#3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta. GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Pesticides/PCBs (8081A18082) - Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water TCMX DCBP (30-130) (30-130)

ACL Sample #

255920 51 55 255921 46 44 255922 63 49 255923 58 43

• • Matrix Interference DO=Diluted Out Page 63 of 72

IA CL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 4~0':"9.~1"="44~4:-----------------::3~0~39':"A"="mw-~i1e-r~R~o-ad"=".~S:""u~it~e~1~00:"".-A~t1~a-nta:--.

G~A~3~03~6~0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Pesticides/PCBs (8081A18082) - Appendix II Sample 10: -----_._._- Matrix: Water Date Sampled:

Date Extracted: 06/11/2007 Date Analyzed: 06/19/2007 ACL Sample #: Blank Units: ~g/L Analyst: AM Analyte Result PQL Aldrin Sal 0.05 Arochlor-1016 Sal 0.50 Arochlor-1221 Sal 0.50 Arochlor-1232 Sal 0.50 Arochlor-1242 Sal 0.50

... . Arochlor-1248 sal 0.50 OArochlor-1254 Sal 0.50 Arochlor-1260 sal 0.50 a-SHC Sal 0.05 b-SHC Sal 0.05 d-SHC Sal 0.05 g-SHC Sal 0.05 Chlordane Sal 0.10 4,4'-000 sal 0.05 4,4'-DDE Sal 0.05 4,4'-DDT Sal 0.05 Oieldrin Sal 0.05 Endosulfan I Sal 0.05 Endosulfan II Sal 0.05 Endosulfan sulfate Sal 0.05 Endrin Sal 0.05 Endrin aldehyde sal 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor Sal 0.05 Toxaphene Sal 2.00 Page 64 of 72

Advanced Chemistry Labs Pesticides Spike Report (SW-B46 Method BOB1A)

Instrument ID: HP5890A-ECDGC#1 Column: STx-CLPII, 30m, O.53mm, O.42pm ACL #: LCSW061107 Matrix: WATER Extraction Date: 6/11/07 Analysis Date: 6/19/07 Initial Volume: 1000.0 ml Final Volume: 1 Dilution Factor: 1 Unit: pg/L orppb R.T. Spike Sample liS liS R.T. IISD MSD RPD QC Limits Pesticide liS Added Resun Cone. Ree. rAJ) MSD Cone. Rec. rAJ) rAJ) RPD % Recovel}

a-BHC 11.559 0.500 0.000 0.528 108 11.562 0.527 105 0 25 40 160 g-BHC (Lindane) 12.416 0.500 0.000 0.512 102 12.418 0.512 102 0 25 40 160 b-BHC 12.637 0.500 0.000 0.483 97 12.639 0.482 98 0 25 40 160 d-BHC 13.297 0.500 0.000 0.494 99 13.299 0.493 99 0 25 40 160 Heptachlor 13.400 0.500 0.000 0.464 93 13.401 0.462 92 0 25 40 160 Aldrin 14.105 0.500 0.000 0.499 100 14.105 0.498 100 0 25 40 160 Heptachlor Epoxide 15.330 0.500 0.000 0.489 98 15.329 0.487 97 0 25 40 160 a-Endosulfan I 16.132 0.500 0.000 0.433 87 16.130 0.431 86 0 25 40 160 DOE 16.360 0.500 0.000 0.476 96 16.358 0.475 95 0 25 40 160 Dieldrin 16.686 0.500 0.000 0.499 100 16.683 0.498 100 0 25 40 160 Endrin 17.296 0.500 0.000 0.511 102 17.292 0.509 102 0 25 40 160 DOD 17.512 0.500 0.000 0.474 95 17.509 0.473 95 0 25 40 160 b-Endosulfan II 17.720 0.500 0.000 0.481 98 17.716 0.480 9B 0 25 40 160 DDT 18.125 0.500 0.000 0.461 92 18.122 0.461 92 0 25 40 160 Endrin Aldehyde 18.390 0.500 0.000 0.431 8B 18.386 0.431 86 0 25 40 160 Endosulfan Sulfate 18.934 0.500 0.000 0.437 87 18.929 0.436 87 0 25 40 160 Methoxychlor 19.469 0.500 0.000 0.426 86 19.463 0.426 86 0 25 40 160 Endrin Ketone 19.985 0.500 0.000 0.551 110 19.978 0.552 110 0 25 40 160

• Outside QC limits Page 65 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road* Suite 100* Atlanta, GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACL Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water oeAA (30-130)

ACL Sample #

255920 84 255921 74 255922 37 255923 49

.. Matrix Interference DO=Diluted Out Page 66 of 72

ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-1444 3039 Amwiler Road' Suite 100* Atlanta. GA 30360 Fax: (770) 409-1844 P.O. Box 88610' Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/0B/2007 Marietta, GA 3006B-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II Sample ID: Matrix: Water Date Sampled:

Date Extracted: 06/11/2007 Date Analyzed: 06/14/2007 ACl Sample #: Blank Units: ~g/L Analyst: AM Analyte Result PQl 2,4-0 SOL 1.0 Dinoseb SOL 1.0 2,4,5-TP (Silvex) SOL 1.0 2,4,5-T SOL 1.0 Page 67 of 72

ADVANCED CHEMISTRY LABS, INC.

Chlorinated Herbicides (8151A) - Appendix II Water Matrix Spike/Spike Duplicate Recoveries Instrument: HP5890A (w/Dual ECDs)

Date Extracted : 06-11-07 Date Analyzed : 06-14-07 ACL Sample No.: LCS/LCSD061107 SPIKE SAMPLE MS MS MSD MSD Added Result Cone. Ree. Cone. Ree. QC Limits ANALYTE (ug/L) (ug/L) (ug/L) (%) (ug/L) (%) RPD RPD % Recovery 2,4-0 4.00 0.00 2.58 65 2.92 73 12 25 40 160 Dinoseb 2.00 0.00 1.28 64 1.46 73 13 25 40 160 2,4,5-TP (Silvex) 2.00 0.00 1.32 66 1.53 77 15 25 40 160 2,4,5-T 2.00 0.00 1.42 71 1.62 81 13 25 40 160

• Outside QC Limits Comment:

Page 68 of 72

Phone: (770)

I IACL 4~09~-~14":"'44~-------------~3~0~39~A~m-w~ile-r~R~o-ad~.~S~u~it-e~10~O~.~A~t1~a-nta~.

ADVANCED CHEMISTRY LABS, INC.

G~A~3~03~6""0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 a-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj #: Vogtle LF #3 1205 Johnson Ferry Rd. ACl Project #: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta. GA 30068-0000 Date Reported: 07/1212007 Contact: Mr. Kurt Batsel Appendix II Metals (6010B/7470Al7841/7041)

Sample 10: Matrix: Water Date Sampled:

Date Extracted:

Date Analyzed: 06/13/2007 ACl Sample #: Blank Units: mg/L Analyst: SW/~IR Analyte Result PQl Antimony Sal 0.006 Arsenic Sal 0.010 Barium Sal 0.020 Beryllium BOl 0.004 Cadmium Sal 0.005 Chromium Sal 0.020 Cobalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010 Mercury Sal 0.0005 Nickel Sal 0.020 Selenium Sal 0.040 Silver Sal 0.010 Thallium BOl 0.002 Tin Sal 0.025 Vanadium Sal 0.050 Zinc Sal 0.020 Page 69 of 72

ADVANCED CHEMISTRY LABS, INC.

Appendix II Metals (6010Bn470AJ7841n041)

Water Matrix Spike/Spike Duplicate Recoveries ACL Sample No. : 255923 (255922 for Hg)

Date Analyzed : 06-13-07 Analyst: SW/JR SPIKE SAMPLE MS MS MSD MSD Added Result Cone. Ree. Cone. Rec. QC Limits ANALYTE (mg/L) (mg/L) (mg/L) (%) (mg/L) (%) RPD RPD % Recovery Antimony 0.200 0.000 0.212 106 0.208 104 2 20 70 130 Arsenic 0.200 0.000 0.219 109 0.213 106 3 20 75 125 Barium 1.000 0.000 1.073 107 1.056 106 2 20 75 125 Beryllium 0.200 0.000 0.247 123 0.240 120 3 20 75 125 Cadmium 0.050 0.000 0.056 113 0.055 109 3 20 75 125 Chromium 0.200 0.000 0.233 117 0.226 113 3 20 75 125 Cobalt 0.200 0.000 0.230 115 0.224 112 2 20 75 125 Copper 0.200 0.000 0.227 113 0.223 112 2 20 75 125 Lead 0.200 0.000 0.228 114 0.222 111 3 20 75 125 Mercury 0.0020 0.0000 0.0020 99 0.0020 101 3 20 70 130 Nickel 0.200 0.036 0.262 113 0.256 110 3 20 75 125 Selenium 0.050 0.000 0.051 102 0.051 102 0 20 75 125 Silver 0.020 0.000 0.021 103 0.020 101 2 20 75 125 Tin 0.200 0.000 0.224 112 0.225 113 1 20 75 125 Thallium 0.200 0.000 0.214 107 0.210 105 2 20 70 130 Vanadium 0.500 0.000 0.561 112 0.547 109 2 20 75 125 Zinc 0.200 0.442 0.663 110 0.632 95 15 20 75 125

• Outside QC Limits Comment:

Page 70 of 72

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IACt I ADVANCED, CHEM/STRXLABS. INC.

3039 Amwiler Road* Suite 100

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ApPENDIX C - ST A. TISTICAL ANALYSES Concentrations (mg/L)

Parameter: Barium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 47 Percent Non-Detects: 61.039%

Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 - ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02.

12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/4/2007 ND<0.01 ND<0.02 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 9 (69.2308%) 7/30/2002 - ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 0.015 0.015 6/24/2003 0.036 0.036 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005 - 0.023 0.023 6/5/2006 - ND<0.01 ND<0.02 12/4/2006 - ND<0.01 ND<0.02 6/4/2007 - 0.2135 0.2135 GWB-6/MW-6 13 13(100%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/5/2006 ND<0.01 ND<0.02 Page 1

6/5/2007 ND<0.01 ND<0.02 GWC-13/MW-1313 0(0%) 7/30/2002 0.077 0.077 9/24/2002 0.085 0.085 10/21/2002 0.083 0.083 12/3/2002 0.082 0.082 6/24/2003 - 0.0295 0.0295 12/17/2003 - 0.0325 0.0325 6/15/2004 - 0.034 0.034 12/28/2004 0.043 0.043 6/13/2005 - 0.03 0.03 12/6/2005 0.044 0.044 6/5/2006 0.051 0.051 12/4/2006 0.059 0.059 6/4/2007 0.061 0.061 GWC-14/MW-146 0(0%) 7/30/2002 0.068 0.068 9/24/2002 - 0.0935 0.0935 10/21/2002 0.064 0.064 12/3/2002 0.106 0.106 6/24/2003 0.051 0.051 12/17/2003 0.189 0.189 GWC-5/MW-5 13 6 (46.1538%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 0.02 0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 0.018 0.018 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.142 0.142 6/15/2004 0.04 0.04 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 0.031 0.031 12/4/2006 0.021 0.021 6/5/2007 0.035 0.035 GWC-17/MW-174 4 (100%) 6/15/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/5/2006 ND<0.01 ND<0.02 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.01 ND<0.02 GWB-16/MW-16',1 1 (100%) 12/5/2006 ND<0.01 ND<0.02 There is 1 unused well Well Samples ND Date Result Original EO-Blank 9 8 (88.8889%) 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/15/2005 - ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/6/2006 ND<0.01 ND<0.02 Page 2

12/5/2006 ND<0.01 ND<0.02 6/5/2007 0.03 0.03 Page 3

Shapiro-Francia Test of Normality Parameter: Barium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size 77=

i x(i) m(i) sum(mJ\2) sum(mx) o 0 o o o 1 0.005 -2.25713 5.09463 -0.0112856 2 0.005 -1.95996 8.93608 -0.0210855 3 0.01 -1.77438 12.0845 -0.0388292 4 0.01 -1.63524 14.7585 -0.0551816 5 0.01 -1.52203 17.0751 -0.0704019 6 0.01 -1.4325 19.1272 -0.084727 7 0.01 -1.34694 20.9414 -0.0981964 8 0.01 -1.27024 22.5549 -0.110899 9 0.01 -1.20036 23.9958 -0.122902 10 0.01 -1.1359 25.286 -0.134261 11 0.01 -1.07584 26.4434 -0.14502 12 0.01 -1.02365 27.4913 -0.155256 13 0.01 -0.970094 28.4324 -0.164957 14 0.01 -0.919183 29.2773 -0.174149 15 0.01 -0.87055 30.0351 -0.182854 16 0.01 -0.823893 30.7139 -0.191093 17 0.01 -0.782366 31.326 -0.198917 18 0.01 -0.738846 31.8719 -0.206306 19 0.01 -0.696684 32.3573 -0.213272 20 0.01 -0.655726 32.7873 -0.21983 21 0.01 -0.615839 33.1665 -0.225988 22 0.01 -0.576911 33.4994 -0.231757 23 0.01 -0.541736 33.7928 -0.237174 24 0.01 -0.504372 34.0472 -0.242218 25 0.01 -0.467699 34.266 -0.246895 26 0.01 -0.431644 34.4523 -0.251212 27 0.01 -0.396142 34.6092 -0.255173 28 0.01 -0.363809 34.7416 -0.258811 29 0.01 -0.329206 34.85 -0.262103 30 0.01 -0.294992 34.937 -0.265053 31 0.01 -0.26112 35.0052 -0.267664 32 0.01 -0.227545 35.0569 -0.26994 33 0.01 -0.194225 35.0947 -0.271882 34 0.01 -0.163659 35.1214 -0.273519 35 0.01 -0.130716 35.1385 -0.274826 36 0.01 -0.0979139 35.1481 -0.275805 37 0.01 -0.0652187 35.1524 -0.276457 38 0.01 -0.0325917 35.1534 -0.276783 39 0.01 o 35.1534 -0.276783 40 0.01 0.0325917 35.1545 -0.276457 41 0.01 0.0652187 35.1587 -0.275805 42 0.01 0.0979139 35.1683 -0.274826 43 0.01 0.130716 35.1854 -0.273519 44 0.01 0.163659 35.2122 -0.271882 45 0.01 0.194225 35.2499 -0.26994 46 0.01 0.227545 35.3017 -0.267664 Page 4

47 0.01 0.26112 35.3699 -0.265053 48 0.015 0.294992 35.4569 -0.260628 49 0.018 0.329206 35.5653 -0.254703 50 0.02 0.363809 35.6976 -0.247426 51 0.021 0.396142 35.8546 -0.239107 52 0.023 0.431644 36.0409 -0.22918 53 0.0295 0.467699 36.2596 -0.215382 54 0.03 0.504372 36.514 -0.200251 55 0.031 0.541736 36.8075 -0.183457 56 0.0325 0.576911 37.1403 -0.164708 57 0.034 0.615839 37.5196 -0.143769 58 0.035 0.655726 37.9496 -0.120819 59 0.036 0.696684 38.4349 -0.0957383 60 0.04 0.738846 38.9808 -0.0661844 61 0.043 0.782366 39.5929 -0.0325427 62 0.044 0.823893 40.2717 0.00370859 63 0.051 0.87055 41.0296 0.0481066 64 0.051 0.919183 41.8745 0.094985 65 0.059 0.970094 42.8156 0.152221 66 0.061 1.02365 43.8634 0.214663 67 0.064 1.07584 45.0208 0.283517 68 0.068 1.1359 46.3111 0.360758 69 0.077 1.20036 47.752 0.453185 70 0.082 1.27024 49.3655 0.557345 71 0.083 1.34694 51.1797 0.669141 72 0.085 1.4325 53.2318 0.790904 73 0.0935 1.52203 55.5484 0.933214 74 0.106 1.63524 58.2224 1.10655 75 0.142 1.77438 61.3708 1.35851 76 0.189 1.95996 65.2122 1.72894 Sample Standard Deviation = 0.0393576 Numerator = 2.98924

Denominator 7.67715 76 65.2122

=

W Statistic 0.389369 5% Critical value of 0.969 exceeds 0.389369 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.389369 Evidence of non-normality at 99% level of significance Page 5

Kruskal-Wallis Non-Parametric Test Parameter: Barium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.01 24 9/24/2002 ND<0.01 24 10/21/2002 - ND<0.01 24 12/312002 ND<0.005 24 6124/2003 ND<0.01 24 12/17/2003 ND<0.01 24 611512004 ND<0.01 24 12/28/2004 ND<0.01 24 611412005 ND<0.01 24 12/5/2005 ND<0.01 24 61512006 ND<0.01 24 1214/2006 ND<0.01 24 61412007 ND<0.01 24

=

Rank Sum 312 Rank Mean 24=

Background Rank Sum 312 =

Background Rank Mean 24 =

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002 - ND<0.01 24 9/24/2002 ND<0.01 24 10/21/2002 ND<0.01 24 12/312002 0.015 48 6124/2003 0.036 59 12/17/2003 ND<0.01 24 611512004 . ND<0.01 24 12/28/2004 - ND<0.01 24 611412005 ND<0.01 24 12/6/2005 - 0.023 52 61512006 - ND<0.01 24 1214/2006 - ND<0.01 24 61412007 - 0.2135 77 Rank Sum = 452 Rank Mean = 34.7692 GWB-6/MW-6 7/3012002 ND<0.01 24 9/24/2002 ND<0.01 24 10/21/2002 ND<0.01 24 12/312002 ND<0.005 24 6124/2003 ND<0.01 24 12/17/2003 ND<0.01 24 611512004 ND<0.01 24 Page 6

12/28/2004 ND<0.01 24 6/13/2005 ND<0.01 24 12/5/2005 ND<0.01 24 6/5/2006 ND<0.01 24 12/5/2006 ND<0.01 24 6/5/2007 ND<0.01 24

=

Rank Sum 312

=

Rank Mean 24 GWC-13/MW-137/30/2002 0.077 69 9/24/2002 0.085 72 10/21/2002 0.083 71 12/3/2002 0.082 70 6/24/2003 - 0.0295 53 12/17/2003 - 0.0325 56 6/15/2004 - 0.034 57 12/28/2004 0.043 61 6/13/2005 - 0.03 54 12/6/2005 0.044 62 6/5/2006 0.051 63 12/4/2006 0.059 65 6/4/2007 0.061 66

=

Rank Sum 819

=

Rank Mean 63 GWC-14/MW-147/30/2002 0.068 68 9/24/2002 - 0.0935 73 10/21/2002 0.064 67 12/3/2002 0.106 74 6/24/2003 0.051 64 12/17/2003 0.189 76

=

Rank Sum 422

=

Rank Mean 70.3333 GWC-5/MW-5 7/30/2002 ND<0.01 24 9/24/2002 0.02 50 10/21/2002 ND<0.01 24 12/3/2002 0.018 49 6/24/2003 ND<0.01 24 12/17/2003 0.142 75 6/15/2004 0.04 60 12/28/2004 ND<0.01 24 6/13/2005 ND<0.01 24 12/6/2005 ND<0.01 24 6/5/2006 0.031 55 12/4/2006 0.021 51 6/5/2007 0.035 58

=

Rank Sum 542

=

Rank Mean 41.6923 GWC-17/MW-176/15/2005 ND<0.01 24 12/6/2005 ND<0.01 24 6/5/2006 ND<0.01 24 12/5/2006 ND<0.01 24

=

Rank Sum 96

=

Rank Mean 24 Page 7

GWC-18/MW-186/15/2005 ND<0.01 24

=

Rank Sum 24 Rank Mean = 24 GWB-16/MW-16112/5/2006 ND<0.01 24 Rank Sum = 24

=

Rank Mean 24 Calculation Results:

=

Kruskal-Wallis H Statistic 41.7694

=

Kruskal-Wallis H Statistic (adjusted for tied non-detects) 54.06 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 41.7694 > 15.5073 indicating a significant group difference at 5% significance level 54.06> 15.5073 indicating a significant group difference at 5% significance level when adjusted for ties Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 24 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 34.7692 10.7692 20.4136 GWB-6/MW-6 24 o 20.4136 GWC-13/MW-1363 39 20.4136 GWC-14/MW-1470.3333 46.3333 25.6865 GWC-5/MW-5 41.6923 17.6923 20.4136 GWC-17/MW-1724 o 29.7576 GWC-18/MW-1824 o 54.0092 GWB-16/MW-16124 o 54.0092 Individual Well Comparisons at Groupwise 5% Significance Level (0.625% Significance Level per comparison) 0.625% Z score is 2.51213 Mean background rank is 24 Well Mean Rank Dif from Bkg Critical Value GWA-7/MW-7 34.7692 10.7692 22.0439 GWB-6/MW-6 24 o 22.0439 GWC-13/MW-1363 39 22.0439 GWC-14/MW-1470.3333 46.3333 27.7379 GWC-5/MW-5 41.6923 17.6923 22.0439 GWC-17/MW-1724 o 32.1342 GWC-18/MW-1824 o 58.3226 GWB-16/MW-16124 o 58.3226 Page 8

Concentrations (mg/L)

Parameter: Nickel Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 71 Percent Non-Detects: 92.2078%

Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 11 (84.6154%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 - ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 0.089 0.089 6/4/2007 0.036 0.036 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%) 7/30/2002 - ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005 - ND<0.01 ND<0.02 6/5/2006 - ND<0.01 ND<0.02 12/4/2006 - ND<0.01 ND<0.02 6/4/2007 - 0.035 0.035 GWB-6/MW-6 13 12 (92.3077%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02

"

0

" ,-

12/5/2006 Page 9 ND<0.01 ND<0.02

6/5/2007 0.041 0.041 GWC-13/MW-1313 13 (100%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 - ND<0.01 ND<0.02 12/17/2003 - ND<0.01 ND<0.02 6/15/2004 - ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 - ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/4/2007 ND<0.01 ND<0.02 GWC-14/MW-146 5 (83.3333%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 - ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.034 0.034 GWC-5/MW-5 13 12 (92.3077%) 7/30/2002 ND<0.01 ND<0.02*

9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 .

6/13/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/5/2007 0.041 0.041 GWC-17/MW-174 4 (100%) 6/15/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/5/2006 ND<0.01 ND<0.02 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.01 ND<0.02 GWB-16/MW-16',1. 1 (100%) 12/5/2006 ND<0.01 ND<0.02*

There is 1 unused well Well Samples ND Date Result Original EQ-Blank 9 9 (100%) 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/15/2005 - ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/6/2006 ND<0.01 ND<0.02 Page 10

12/5/2006 ND<0.01 ND<0.02 61512007 ND<0.01 ND<0.02 Page 11

Shapiro-Francia Test of Normality Parameter: Nickel All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size 77=

i x(i) m(i) sum(mJ\2) sum(mx) o 0 o o o 1 0.01 -2.25713 5.09463 -0.0225713 2 0.01 -1.95996 8.93608 -0.0421709 3 0.01 -1.77438 12.0845 -0.0599147 4 0.01 -1.63524 14.7585 -0.076267 5 0.01 -1.52203 17.0751 -0.0914874 6 0.01 -1.4325 19.1272 -0.105812 7 0.01 -1.34694 20.9414 -0.119282 8 0.01 -1.27024 22.5549 -0.131984 9 0.01 -1.20036 23.9958 -0.143988 10 0.01 -1.1359 25.286 -0.155347 11 0.01 -1.07584 26.4434 -0.166105 12 0.01 -1.02365 27.4913 -0.176342 13 0.01 -0.970094 28.4324 -0.186043 14 0.01 -0.919183 29.2773 -0.195234 15 0.01 -0.87055 30.0351 -0.20394 16 0.01 -0.823893 30.7139 -0.212179 17 0.01 -0.782366 31.326 -0.220002 18 0.01 -0.738846 31.8719 -0.227391 19 0.01 -0.696684 32.3573 -0.234358 20 0.01 -0.655726 32.7873 -0.240915 21 0.01 -0615839 33.1665 -0.247073 22 0.01 -0.576911 33.4994 -0.252843 23 0.01 -0.541736 33.7928 -0.25826 24 0.01 -0.504372 34.0472 -0.263304 25 0.01 -0.467699 34.266 -0.267981 26 0.01 -0.431644 34.4523 -0.272297 27 0.01 -0.396142 34.6092 -0.276258 28 0.01 -0.363809 34.7416 -0.279897 29 0.01 -0.329206 34.85 -0.283189 30 0.01 -0.294992 34.937 -0.286139 31 0.01 -0.26112 35.0052 -0.28875 32 0.01 -0.227545 35.0569 -0.291025 33 0.01 -0.194225 35.0947 -0.292967 34 0.01 -0.163659 35.1214 -0.294604 35 0.01 -0.130716 35.1385 -0.295911 36 0.01 -0.0979139 35.1481 -0.29689 37 0.01 -0.0652187 35.1524 -0.297543 38 0.01 -0.0325917 35.1534 -0.297868 39 0.01 o 35.1534 -0.297868 40 0.01 0.0325917 35.1545 -0.297543 41 0.01 0.0652187 35.1587 -0.29689 42 0.01 0.0979139 35.1683 -0.295911 43 0.01 0.130716 35.1854 -0.294604 44 0.01 0.163659 35.2122 -0.292967 45 0.01 0.194225 35.2499 -0.291025 46 0.01 0.227545 35.3017 -0.28875 Page 12

47 0.01 0.26112 35.3699 -0.286139 48 0.01 0.294992 35.4569 -0.283189 49 0.01 0.329206 35.5653 -0.279897 50 0.01 0.363809 35.6976 -0.276258 51 0,01 0.396142 35.8546 -0.272297 52 0.01 0.431644 36.0409 -0.267981 53 0.01 0.467699 36.2596 -0.263304 54 0.01 0.504372 36.514 -0.25826 55 0.01 0.541736 36.8075 -0.252843 56 0.01 0.576911 37.1403 -0.247073 57 0.01 0.615839 37.5196 -0.240915 58 0.01 0.655726 37.9496 -0.234358 59 0.01 0.696684 38.4349 -0.227391 60 0.01 0.738846 38.9808 -0.220002 61 0.01 0.782366 39.5929 -0.212179 62 0.01 0.823893 40.2717 -0.20394 63 0.01 0.87055 41.0296 -0.195234 64 0.01 0.919183 41.8745 -0.186043 65 0.01 0.970094 42.8156 -0.176342 66 0.02 1.02365 43.8634 -0.155869 67 0.02 1.07584 45.0208 -0.134352 68 0.02 1.1359 46.3111 -0.111634 69 0.02 1.20036 47.752 -0.0876267 70 0.02 1.27024 49.3655 -0.062222 71 0.02 1.34694 51.1797 -0.0352832 72 0.034 1.4325 53.2318 0.0134219 73 0.035 1.52203 55.5484 0.0666931 74 0.036 1.63524 58.2224 0.125562 75 0.041 1.77438 61.3708 0.198311 76 0.041 1.95996 65.2122 0.27867 Sample Standard Deviation = 0.0112687 Numerator = 0.0776567

Denominator 0.629344 76 65.2122 W Statistic = 0.123393 5% Critical value of 0.969 exceeds 0.123393 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.123393 Evidence of non-normality at 99% level of significance Page 13

Kruskal-Wallis Non-Parametric Test Parameter: Nickel Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<O.01 36 9/24/2002 ND<O.01 36 10/21/2002 - ND<O.01 36 12/3/2002 ND<0.02 36 6124/2003 ND<O.01 36 12/17/2003 ND<O.01 36 611512004 ND<O.01 36 12/28/2004 ND<O.01 36 611412005 ND<O.01 36 12/5/2005 ND<O.01 36 61512006 ND<O.01 36 1214/2006 0.089 77 61412007 0.036 74

=

Rank Sum 547

=

Rank Mean 42.0769 Background Rank Sum = 547

=

Background Rank Mean 42.0769 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002- ND<O.01 36 9/24/2002 ND<O.01 36 10/21/2002 ND<O.01 36 12/312002 ND<0.02 36 6124/2003 ND<O.01 36 12/17/2003 ND<O.01 36 611512004 ND<O.01 36 12/28/2004 - ND<O.01 36 611412005 ND<O.01 36 12/6/2005 - ND<O.01 36 61512006 - ND<O.01 36 1214/2006 - ND<O.01 36 61412007 - 0.035 73

=

Rank Sum 505

=

Rank Mean 38.8462 GWB-6/MW-6 7/3012002 ND<O.01 36 9/24/2002 ND<O.01 36 10/21/2002 ND<O.01 36 12/312002 ND<0.02 36 6124/2003 ND<O.01 36 12/17/2003 ND<O.01 36 611512004 ND<O.01 36 Page 14

12/28/2004 NO<0.01 36 6/13/2005 NO<0.01 36 12/5/2005 NO<0.01 36 6/5/2006 NO<0.01 36 12/5/2006 NO<0.01 36 6/5/2007 0.041 75

=

Rank Sum 507

=

Rank Mean 39 GWC-13/MW-137/30/2002 NO<0.01 36 9/24/2002 NO<0.01 36 10/21/2002 NO<0.01 36 12/3/2002 NO<0.02 36 6/24/2003 - NO<0.01 36 12/17/2003 - NO<0.01 36 6/15/2004 - NO<0.01 36 12/28/2004 NO<0.01 36 6/13/2005 - NO<0.01 36 12/6/2005 NO<0.01 36 6/5/2006 NO<0.01 36 12/4/2006 NO<0.01 36 6/4/2007 NO<0.01 36 Rank Sum = 468 Rank Mean = 36 GWC-14/MW-147/30/2002 NO<0.01 36 9/24/2002 - NO<0.01 36 10/21/2002 NO<0.01 36 12/3/2002 NO<0.02 36 6/24/2003 NO<0.01 36 12/17/2003 0.034 72

=

Rank Sum 252

=

Rank Mean 42 GWC-5/MW-5 7/30/2002 NO<0.01 36 9/24/2002 NO<0.01 36 10/21/2002 NO<0.01 36 12/3/2002 NO<0.02 36 6/24/2003 NO<0.01 36 12/17/2003 NO<0.01 36 6/15/2004 NO<0.01 36 12/28/2004 NO<0.01 36 6/13/2005 NO<0.01 36 12/6/2005 NO<0.01 36 6/5/2006 NO<0.01 36 12/4/2006 NO<0.01 36 6/5/2007 0.041 76 Rank Sum: 508

=

Rank Mean 39.0769 GWC-17/MW-176/15/2005 NO<0.01 36 12/6/2005 NO<0.01 36 6/5/2006 NO<0.01 36 12/5/2006 NO<0.01 36

=

Rank Sum 144

=

Rank Mean 36 Page 15

GWC-18/MW-186/15/2005 ND<0.01 36

=

Rank Sum 36 Rank Mean = 36 GWB-16/MW-16112/5/2006 ND<0.01 36 Rank Sum = 36

=

Rank Mean 36 Calculation Results:

=

Kruskal-Wallis H Statistic 0.696227

=

Kruskal-Wallis H Statistic (adjusted for tied non-detects) 3.22257 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 0.696227 < 15.5073 indicating no significant group difference at 5% significance level 3.22257 < 15.5073 indicating no significant group difference at 5% significance level when adjusted for ties Page 16

Concentrations (mg/L)

Parameter: Zinc Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 46 Percent Non-Detects: 59.7403%

Total Background Samples: 13 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1513 8 (61.5385%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 - ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 0.029 0.029 12/5/2005 0.042 0.042 6/5/2006 0.063 0.063 12/4/2006 0.316 0.316 6/4/2007 0.442 0.442 There are 8 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 13 8 (61.5385%) 7/30/2002 - ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 0.034 0.034 12/17/2003 0.023 0.023 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005 - 0.1425 0.1425 6/5/2006 - 0.375 0.375 12/4/2006 - ND<0.01 ND<0.02 6/4/2007 - 0.215 0.215 GWB-6/MW-6 13 9 (69.2308%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 0.02 0.02 6/5/2006 0.083 0.083 12/5/2006 0.028 0.028 Page 17

6/5/2007 0.528 0.528

_""""_"~""'______ ""_"_~==="~=_'~""_"'._., ____~~~=,'"'",___ **__ "_"~._~_"C".",_ ** -*~ ___'_*.N**."_"~'*'_"_'~"_'*,"="M"' **'."_'_*_'___ .~~~'"."*.**__ ~'_",~~"~~.".' ~ __ ,_.~_."=".. ~"""___"____",__,,_

GWC-13/MW-1313 4 (30.7692%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 0.023 0.023 10/21/2002 0.027 0.027 12/312002 0.027 0.027 6/24/2003 - ND<0.01 ND<0.02 12/17/2003 - ND<0.01 ND<0.02 6/15/2004 - ND<0.01 ND<0.02 12/28/2004 0.044 0.044 6/1312005 - 0.02 0.02 12/6/2005 0.194 0.194 6/5/2006 0.213 0.213 12/4/2006 0.055 0.055 6/4/2007 0.089 0.089 GWC-14/MW-146 5 (83.3333%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 - ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.127 0.127 GWC-5/MW-5 13 8 (61.5385%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.032 0.032 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/6/2005 0.055 0.055 6/5/2006 0.1 0.1 1214/2006 0.062 0.062 6/5/2007 0.193 0.193 GWC-17/MW-174 2 (50%) 6/15/2005 ND<0.01 ND<0.02 12/6/2005 0.096 0.096 6/5/2006 0.077 0.077 12/5/2006 ND<0.01 ND<0.02 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.01 ND<0.02 GWB-16/MW-1611. 1 (100%) 12/5/2006 ND<0.01 ND<0.02 There is 1 unused well Well Samples ND Date Result Original EO-Blank 9 9 (100%) 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/15/2005 - ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/6/2006 ND<0.01 ND<0.02.

Page 18

12/5/2006 ND<0.01 ND<0.02 61512007 ND<0.01 ND<0.02 Page 19

Shapiro-Francia Test of Normality Parameter: Zinc All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL

=

Total Sample Size 77 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 0.01 -2.25713 5.09463 -0.0225713 2 0.01 -1.95996 8.93608 -0.0421709 3 0.01 -1.77438 12.0845 -0.0599147 4 0.01 -1.63524 14.7585 -0.076267 5 0.01 -1.52203 17.0751 -0.0914874 6 0.01 -1.4325 19.1272 -0.105812 7 0.01 -1.34694 20.9414 -0.119282 8 0.01 -1.27024 22.5549 -0.131984 9 0.01 -1.20036 23.9958 -0.143988 10 0.01 -1.1359 25.286 -0.155347 11 0.01 -1.07584 26.4434 -0.166105 12 0.01 -1.02365 27.4913 -0.176342 13 0.01 -0.970094 28.4324 -0.186043 14 0.01 -0.919183 29.2773 -0.195234 15 0.01 -0.87055 30.0351 -0.20394 16 0.01 -0.823893 30.7139 -0.212179 17 0.01 -0.782366 31.326 -0.220002 18 0.01 -0.738846 31.8719 -0.227391 19 0.01 -0.696684 32.3573 -0.234358 20 0.01 -0.655726 32.7873 -0.240915 21 0.01 -0.615839 33.1665 -0.247073 22 0.01 -0.576911 33.4994 -0.252843 23 0.01 -0.541736 33.7928 -0.25826 24 0.01 -0.504372 34.0472 -0.263304 25 0.01 -0.467699 34.266 -0.267981 26 0.01 -0.431644 34.4523 -0.272297 27 0.01 -0.396142 34.6092 -0.276258 28 0.01 -0.363809 34.7416 -0.279897 29 0.01 -0.329206 34.85 -0.283189 30 0.01 -0.294992 34.937 -0.286139 31 0.01 -0.26112 35.0052 -0.28875 32 0.01 -0.227545 35.0569 -0.291025 33 0.01 -0.194225 35.0947 -0.292967 34 0.01 -0.163659 35.1214 -0.294604 35 0.01 -0.130716 35.1385 -0.295911 36 0.01 -0.0979139 35.1481 -0.29689 37 0.01 -0.0652187 35.1524 -0.297543 38 0.01 -0.0325917 35.1534 -0.297868 39 0.01 o 35.1534 -0.297868 40 0.01 0.0325917 35.1545 -0.297543 41 0.01 0.0652187 35.1587 -0.29689 42 0.01 0.0979139 35.1683 -0.295911 43 0.01 0.130716 35.1854 -0.294604 44 0.01 0.163659 35.2122 -0.292967 45 0.01 0.194225 35.2499 -0.291025 46 0.01 0.227545 35.3017 -0.28875 Page 20

) 47 0.02 0.26112 35.3699 -0.283527 48 0.02 0.294992 35.4569 -0.277628 49 0.023 0.329206 35.5653 -0.270056 50 0.023 0.363809 35.6976 -0.261688 51 0.027 0.396142 35.8546 -0.250992 52 0.027 0.431644 36.0409 -0.239338 53 0.028 0.467699 36.2596 -0.226242 54 0.029 0.504372 36.514 -0.211616 55 0.032 0.541736 36.8075 -0.19428 56 0.034 0.576911 37.1403 -0.174665 57 0.042 0.615839 37.5196 -0.1488 58 0.044 0.655726 37.9496 -0.119948 59 0.055 0.696684 38.4349 -0.0816302 60 0.055 0.738846 38.9808 -0.0409937 61 0.062 0.782366 39.5929 0.00751297 62 0.063 0.823893 40.2717 0.0594182 63 0.077 0.87055 41.0296 0.126451 64 0.083 0.919183 41.8745 0.202743 65 0.089 0.970094 42.8156 0.289081 66 0.096 1.02365 43.8634 0.387352 67 0.1 1.07584 45.0208 0.494935 68 0.127 1.1359 46.3111 0.639194 69 0.1425 1.20036 47.752 0.810245 70 0.193 1.27024 49.3655 1.0554 71 0.194 1.34694 51.1797 1.31671 72 0.213 1.4325 53.2318 1.62183 73 0.215 1.52203 55.5484 1.94907 74 0.316 1.63524 58.2224 2.4658 75 0.375 1.77438 61.3708 3.13119 76 0.442 1.95996 65.2122 3.9975

=

Sample Standard Deviation 0.0995987

=

Numerator 15.98

Denominator 49.1643 76 65.2122

=

W Statistic 0.325032 5% Critical value of 0.969 exceeds 0.325032 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.325032 Evidence of non-normality at 99% level of significance Page 21

Kruskal-Wallis Non-Parametric Test Parameter: Zinc Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.01 23.5 9/24/2002 ND<0.01 23.5 10/21/2002 - ND<0.01 23.5 12/312002 ND<0.01 23.5 6124/2003 ND<0.01 23.5 12/17/2003 ND<0.01 23.5 611512004 ND<0.01 23.5 12/28/2004 ND<0.01 23.5 611412005 0.029 54 12/5/2005 0.042 57 61512006 0.063 62 1214/2006 0.316 74 61412007 0.442 76

=

Rank Sum 511 Rank Mean = 39.3077 Background Rank Sum 511 =

=

Background Rank Mean 39.3077 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002- ND<0.01 23.5 9/24/2002 ND<0.01 23.5 10/21/2002 ND<0.01 23.5 12/312002 ND<0.01 23.5 6124/2003 0.034 56 12/17/2003 0.023 49 611512004 ND<0.01 23.5 12/28/2004 - ND<0.01 23.5 611412005 ND<0.01 23.5 12/6/2005 - 0.1425 69 61512006 - 0.375 75 1214/2006 - ND<0.01 23.5 61412007 - 0.215 73

=

Rank Sum 510

=

Rank Mean 39.2308 GWB-6/MW-6 7/3012002 ND<0.01 23.5 9/24/2002 ND<0.01 23.5 10/21/2002 ND<0.01 23.5 12/312002 ND<0.01 23.5 6124/2003 ND<0.01 23.5 12/17/2003 ND<0.01 23.5 611512004 ND<0.01 23.5 Page 22

12/28/2004 ND<0.01 23.5 611312005 ND<0.01 23.5 12/5/2005 0.02 47 61512006 0.083 64 1215/2006 0.028 53 61512007 0.528 77 Rank Sum = 452.5

=

Rank Mean 34.8077 GWC-13/MW-137/30/2002 ND<0.01 23.5 9/24/2002 0.023 50 10/21/2002 0.027 51 12/312002 0.027 52 6124/2003 - ND<0.01 23.5 12/17/2003 - ND<0.01 23.5 611512004 - ND<0.01 23.5 12/28/2004 0.044 58 611312005 - 0.02 48 12/6/2005 0.194 71 61512006 0.213 72 1214/2006 0.055 59 61412007 0.089 65

=

Rank Sum 620

=

Rank Mean 47.6923 GWC-14/MW-147/30/2002 ND<0.01 23.5 9/24/2002 - ND<0.01 23.5 10/21/2002 ND<0.01 23.5 12/312002 ND<0.01 23.5 6124/2003 ND<0.01 23.5 12/17/2003 0.127 68

=

Rank Sum 185.5

=

Rank Mean 30.9167 GWC-5/MW-5 7/3012002 ND<0.01 23.5 9/24/2002 ND<0.01 23.5 10/21/2002 ND<0.01 23.5 12/312002 ND<0.01 23.5 6124/2003 ND<0.01 23.5 12/17/2003 0.032 55 611512004 ND<0.01 23.5 12128/2004 ND<0.01 23.5 6/13/2005 ND<0.01 23.5 12/6/2005 0.055 60 61512006 0.1 67 1214/2006 0.062 61 61512007 0.193 70

=

Rank Sum 501

=

Rank Mean 38.5385 GWC-17/MW-176/15/2005 ND<0.01 23.5 12/6/2005 0.096 66 61512006 0.077 63 1215/2006 ND<0.01 23.5

=

Rank Sum 176

=

Rank Mean 44 Page 23

GWC-18/MW-186/15/2005 ND<0.01 23.5 Rank Sum = 23.5 Rank Mean = 23.5 GWB-16/MW-16112/5/2006 ND<0.01 23.5 Rank Sum = 23.5 Rank Mean = 23.5 Calculation Results:

Kruskal-Wallis H Statistic = 4.37152 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 5.55567 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 4.37152 < 15.5073 indicating no significant group difference at 5% significance level 5.55567 < 15.5073 indicating no significant group difference at 5% significance level when adjusted for ties Page 24

Concentrations (mg/L)

Parameter: Mercury Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 50 Total Non-Detect: 42 Percent Non-Detects: 84%

Total Background Samples: 9 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-159 8 (88.8889%) 6/24/2003 ND<0.00025 ND<0.0005 12/17/2003 ND<0.00025 ND<0.0005 6/15/2004 ND<0.00025 ND<0.0005 12/28/2004 0.0004 0.0004 6/14/2005 ND<0.00025 ND<0.0005 12/5/2005 ND<0.00025 ND<0.0005 6/5/2006 ND<0.00025 ND<0.0005 12/4/2006 ND<0.00025 ND<0.0005 6/4/2007 ND<0.00025 ND<0.0005 There are 8 compliance wells Well Samples NO Date Result Original GWC-13/MW-139 8 (88.8889%) 6/24/2003 - 0.0005 0.0005 12/17/2003 - ND<0.00025 ND<0.0005 6/15/2004 - ND<0.00025 ND<0.0005 12/28/2004 ND<0.00025 ND<0.0005 6/13/2005 - ND<0.00025 ND<0.0005 12/6/2005 ND<0.00025 ND<0.0005 6/5/2006 ND<0.00025 ND<0.0005 12/4/2006 ND<0.00025 ND<0.0005 6/4/2007 ND<0.00025 ND<0.0005 GWC-14/MW-142 0(0%) 6/24/2003 0.0072 0.0072 12/17/2003 0.01 0.01 GWA-7/MW-7 8 4 (50%) 12/17/2003 ND<0.00025 ND<0.0005 6/15/2004 0.0006 0.0006 12/28/2004 - 0.0013 0.0013 6/14/2005 ND<0.00025 ND<0.0005 12/6/2005 - ND<0.00025 ND<0.0005 6/5/2006 - ND<0.00025 ND<0.0005 12/4/2006 - 0.0012 0.0012 6/4/2007 - 0.00365 0.00365 GWB-6/MW-6 8 8 (100%) 12/17/2003 ND<0.00025 ND<0.0005 6/15/2004 ND<0.00025 ND<0.0005 12/28/2004 ND<0.00025 ND<0.0005 6/13/2005 ND<0.00025 ND<0.0005 12/5/2005 ND<0.00025 ND<0.0005 6/5/2006 ND<0.00025 ND<0.0005 12/5/2006 ND<0.00025 ND<0.0005 6/5/2007 ND<0.00025 ND<0.0005 Page 25

GWC-5/MW-5 8 8 (100%) 12/17/2003 ND<0.00025 ND<0.0005 6/15/2004 ND<0.00025 ND<0.0005 12/28/2004 ND<0.00025 ND<0.0005 6/13/2005 ND<0.00025 ND<0.0005 12/6/2005 ND<0.00025 ND<0.0005 6/5/2006 ND<0.00025 ND<0.0005 12/4/2006 ND<0.00025 ND<0.0005 6/5/2007 ND<0.00025 ND<0.0005 GWC-17/MW-17 4 4(100%) 6/15/2005 ND<0.00025 ND<0.0005 12/6/2005 ND<0.00025 ND<0.0005 6/5/2006 ND<0.00025 ND<0.0005 12/5/2006 ND<0.00025 ND<0.0005 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.00025 ND<0.0005 GWB-16/MW-1611 1 (100%) 12/5/2006 ND<0.00025 ND<0.0005 There is 1 unused well Well Samples ND Date Result Original EQ-Blank 9 9 (100%) 6/24/2003 ND<0.00025 ND<0.0005 12/17/2003 ND<0.00025 ND<0.0005 6/15/2004 ND<0.00025 ND<0.0005 12/28/2004 - ND<0.00025 ND<0.0005 6/15/2005 - ND<0.00025 ND<0.0005 12/6/2005 ND<0.00025 ND<0.0005 6/6/2006 ND<0.00025 ND<0.0005 12/5/2006 ND<0.00025 ND<0.0005 6/5/2007 ND<0.00025 ND<0.0005 Page 26

Shapiro-Wilks Test of Normality Parameter: Mercury All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL

=

K 25; Samples 50 =

i x(i) x(n-i+1) x(n-1 +1 )-x(i)a(n-i+1) b(i) 1 0.00025 0.01 0.00975 0.3751 0.00365723 2 0.00025 0.0072 0.00695 0.2574 0.00178893 3 0.00025 0.00365 0.0034 0.226 0.0007684 4 0.00025 0.0013 0.00105 0.2032 0.00021336 5 0.00025 0.0012 0.00095 0.1847 0.000175465 6 0.00025 0.0006 0.00035 0.1691 5.9185e-005 7 0.00025 0.0005 0.00025 0.1554 3. 885e-005 8 0.00025 0.0004 0.00015 0.143 2. 145e-005 9 0.00025 0.00025 0 0.1317 0 10 0.00025 0.00025 0 0.1212 0 11 0.00025 0.00025 0 0.1113 0 12 0.00025 0.00025 0 0.102 0 13 0.00025 0.00025 0 0.0932 0 14 0.00025 0.00025 0 00846 0 15 0.00025 0.00025 0 0.0764 0 16 0.00025 0.00025 0 0.0685 0 17 0.00025 0.00025 0 0.0608 0 18 0.00025 0.00025 0 0.0532 0 19 0.00025 0.00025 0 0.0459 0 20 0.00025 0.00025 0 0.0386 0 21 0.00025 0.00025 0 0.0314 0 22 0.00025 0.00025 0 0.0244 0 23 0.00025 0.00025 0 0.0174 0 24 0.00025 0.00025 0 0.0104 0 25 0.00025 0.00025 0 0.0035 0 26 0.00025 0.00025 0 27 0.00025 0.00025 0 28 0.00025 0.00025 0 29 0.00025 0.00025 0 30 0.00025 0.00025 0 31 0.00025 0.00025 0 32 0.00025 0.00025 0 33 0.00025 0.00025 0 34 0.00025 0.00025 0 35 0.00025 0.00025 0 36 0.00025 0.00025 0 37 0.00025 0.00025 0 38 0.00025 0.00025 0 39 0.00025 0.00025 0 40 0.00025 0.00025 0 41 0.00025 0.00025 0 42 0.00025 0.00025 0 43 0.0004 0.00025 -0.00015 44 0.0005 0.00025 -0.00025 45 0.0006 0.00025 -0.00035 46 0.0012 0.00025 -0.00095 Page 27

47 0.0013 0.00025 -0.00105 48 0.00365 0.00025 -0.0034 49 0.0072 0.00025 -0.00695 50 0.01 0.00025 -0.00975

=

Sum of b values 0.00672286 Sample Standard Deviation = 0.00173025

=

W Statistic 0.308101 5% Critical value of 0.947 exceeds 0.308101 Evidence of non-normality at 95% level of significance 1% Critical value of 0.93 exceeds 0.308101 Evidence of non-normality at 99% level of significance Page 28

Kruskal-Wallis Non-Parametric Test Parameter: Mercury Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-156/24/2003 ND<0.00025 21.5 12/17/2003 ND<0.00025 21.5 6/15/2004 ND<0.00025 21.5 12/28/2004 0.0004 43 6/14/2005 ND<0.00025 21.5 12/5/2005 ND<0.00025 21.5 6/5/2006 ND<0.00025 21.5 12/4/2006 ND<0.00025 21.5 6/4/2007 ND<0.00025 21.5 Rank Sum = 215

=

Rank Mean 23.8889 Background Rank Sum = 215

=

Background Rank Mean 23.8889 Compliance Wells WelllD Date Result Rank GWC-13/MW-136/24/2003 - 0.0005 44 12/17/2003 - ND<0.00025 21.5 6/15/2004 - ND<0.00025 21.5 12/28/2004 ND<0.00025 21.5 6/13/2005 - ND<0.00025 21.5 12/6/2005 ND<0.00025 21.5 6/5/2006 ND<0.00025 21.5 12/4/2006 ND<0.00025 21.5 6/4/2007 ND<0.00025 21.5

=

Rank Sum 216 Rank Mean 24=

GWC-14/MW-146/24/2003 0.0072 49 12/17/2003 0.01 50 Rank Sum 99=

=

Rank Mean 49.5 GWA-7/MW-7 12/17/2003 ND<0.00025 21.5 6/15/2004 0.0006 45 12/28/2004 - 0.0013 47 6/14/2005 ND<0.00025 21.5 12/6/2005 - ND<0.00025 21.5 6/5/2006 - ND<0.00025 21.5 12/4/2006 - 0.0012 46 6/4/2007 - 0.00365 48

=

Rank Sum 272 Rank Mean 34=

Page 29

GWB-6/MW-6 12/17/2003 ND<0.00025 21.5 611512004 ND<0.00025 21.5 12/28/2004 ND<0.00025 21.5 611312005 ND<0.00025 21.5 12/5/2005 ND<0.00025 21.5 61512006 ND<0.00025 21.5 1215/2006 ND<0.00025 21.5 61512007 ND<0.00025 21.5 Rank Sum = 172

=

Rank Mean 21.5 GWC-5/MW-5 12/17/2003 ND<0.00025 21.5 611512004 ND<0.00025 21.5 12/28/2004 ND<0.00025 21.5 611312005 ND<0.00025 21.5 12/6/2005 ND<0.00025 21.5 61512006 ND<0.00025 21.5 1214/2006 ND<0.00025 21.5 61512007 ND<0.00025 21.5

=

Rank Sum 172 Rank Mean = 21.5 GWC-17/MW-176/15/2005 ND<0.00025 21.5 12/6/2005 ND<0.00025 21.5 61512006 ND<0.00025 21.5 1215/2006 ND<0.00025 21.5

=

Rank Sum 86

=

Rank Mean 21.5 GWC-18/MW-186/15/2005 ND<0.00025 21.5

=

Rank Sum 21.5

=

Rank Mean 21.5 GWB-16/MW-16112/5/2006 ND<0.00025 21.5

=

Rank Sum 21.5

=

Rank Mean 21.5 Calculation Results:

=

Kruskal-Wallis H Statistic 10.0029 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 24.5533 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 10.0029 < 15.5073 indicating no significant group difference at 5% significance level 24.5533 > 15.5073 indicating a significant group difference at 5% significance level when adjusted for ties Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 23.8889 Well Mean Rank Dif from Bkg Critical Value GWC-13/MW-1324 0.111111 15.9863 GWC-14/MW-1449.5 25.6111 26.5102 GWA-7/MW-7 34 10.1111 16.4783 GWB-6/MW-6 21.5 -2.38889 16.4783 GWC-5/MW-5 21.5 -2.38889 16.4783 GWC-17/MW-1721.5 -2.38889 20.3786 Page 30

GWC-18/MW-1821.5 -2.38889 35.7464 GWB-16/MW-16121.5 -2.38889 35.7464 Individual Well Comparisons at Groupwise 5% Significance Level (O.625% Significance Level per comparison) 0.625% Z score is 2.51213 Mean background rank is 23.8889 Well Mean Rank Dif from Bkg Critical Value GWC-13/MW-1324 0.111111 17.263 GWC-14/MW-1449.5 25.6111 28.6274 GWA-7/MW-7 34 10.1111 17.7943 GWB-6/MW-6 21.5 -2.38889 17.7943 GWC-5/MW-5 21.5 -2.38889 17.7943 GWC-17/MW-1721.5 -2.38889 22.0061 GWC-18/MW-1821.5 -2.38889 38.6012 GWB-16/MW-16121.5 -2.38889 38.6012 Page 31

Concentrations (mg/L)

Parameter: Chromium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 74 Percent Non-Detects: 96.1039%

Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 - ND<0,01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/4/2007 ND<0.01 ND<0.02 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%) 7/30/2002 - ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005 - ND<0.01 ND<0.02 6/5/2006 - ND<0.01 ND<0.02 12/4/2006 - ND<0.01 ND<0.02 6/4/2007 - 0.063 0.063 GWB-6/MW-6 13 13 (100%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02, 12/5/2006 ND<0.01 ND<0.02 Page 32

6/5/2007 ND<0.01 ND<0.02 GWC-13/MW-1313 13 (100%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 - ND<0.01 ND<0.02 12/17/2003 - ND<0.01 ND<0.02 6/15/2004 - ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 - ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/4/2007 ND<0.01 ND<0.02 GWC-14/MW-146 5 (83.3333%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 - ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 .

12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.091 0.091 GWC-5/MW-5 13 12 (92.3077%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.028 0.028 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/5/2007 ND<0.01 ND<0.02 GWC-17/MW-174 4 (100%) 6/15/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 .

12/5/2006 ND<0.01 ND<0.02 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.01 ND<0.02 GWB-16/MW-16It 1 (100%) 12/5/2006 ND<0.01 ND<0.02 There is 1 unused well Well Samples NO Date Result Original EO-Blank 9 9 (100%) 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/15/2005 - ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/6/2006 ND<0.01 ND<0.02 Page 33

12/5/2006 ND<0.01 ND<0.02 6/5/2007 ND<0.01 ND<0.02 Page 34

Shapiro-Francia Test of Normality Parameter: Chromium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1f2 DL

=

Total Sample Size 77 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 0.005 -2.25713 5.09463 -0.0112856 2 0.005 -1.95996 8.93608 -0.0210855 3 0.005 -1.77438 12.0845 -0.0299573 4 0.005 -1.63524 14.7585 -0.0381335 5 0.005 -1.52203 17.0751 -0.0457437 6 0.005 -1.4325 19.1272 -0.0529062 7 0.01 -1.34694 20.9414 -0.0663756 8 0.01 -1.27024 22.5549 -0.079078 9 0.01 -1.20036 23.9958 -0.0910816 10 0.01 -1.1359 25.286 -0.102441 11 0.01 -1.07584 26.4434 -0.113199 12 0.01 -1.02365 27.4913 -0.123435 13 0.01 -0.970094 28.4324 -0.133136 14 0.01 -0.919183 29.2773 -0.142328 15 0.01 -0.87055 30.0351 -0.151034 16 0.01 -0.823893 30.7139 -0.159273 17 0.01 -0.782366 31.326 -0.167096 18 0.01 -0.738846 31.8719 -0.174485 19 0.01 -0.696684 32.3573 -0.181452 20 0.01 -0.655726 32.7873 -0.188009 21 0.01 -0.615839 33.1665 -0.194167 22 0.01 -0.576911 33.4994 -0.199936 23 0.01 -0.541736 33.7928 -0.205354 24 0.01 -0.504372 34.0472 -0.210397 25 0.01 -0.467699 34.266 -0.215074 26 0.01 -0.431644 34.4523 -0.219391 27 0.01 -0.396142 34.6092 -0.223352 28 0.01 -0.363809 34.7416 -0.22699 29 0.01 -0.329206 34.85 -0.230282 30 0.01 -0.294992 34.937 -0.233232 31 0.01 -0.26112 35.0052 -0.235844 32 0.01 -0.227545 35.0569 -0.238119 33 0.01 -0.194225 35.0947 -0.240061 34 0.01 -0.163659 35.1214 -0.241698 35 0.01 -0.130716 35.1385 -0.243005 36 0.01 -0.0979139 35.1481 -0.243984 37 0.01 -0.0652187 35.1524 -0.244636 38 0.01 -0.0325917 35.1534 -0.244962 39 0.01 o 35.1534 -0.244962 40 0.01 0.0325917 35.1545 -0.244636 41 0.01 0.0652187 35.1587 -0.243984 42 0.01 0.0979139 35.1683 -0.243005 43 0.01 0.130716 35.1854 -0.241698 44 0.01 0.163659 35.2122 -0.240061 45 0.01 0.194225 35.2499 -0.238119 46 0.01 0.227545 35.3017 -0.235844 Page 35

47 0.01 0.26112 35.3699 -0.233232 48 0.01 0.294992 35.4569 -0.230282 49 0.01 0.329206 35.5653 -0.22699 50 0.01 0.363809 35.6976 -0.223352 51 0.01 0.396142 35.8546 -0.219391 52 0.01 0.431644 36.0409 -0.215074 53 0.01 0.467699 36.2596 -0.210397 54 0.01 0.504372 36.514 -0.205354 55 0.01 0.541736 36.8075 -0.199936 56 0.01 0.576911 37.1403 -0.194167 57 0.01 0.615839 37.5196 -0.188009 58 0.01 0.655726 37.9496 -0.181452 59 0.01 0.696684 38.4349 -0.174485 60 0.01 0.738846 38.9808 -0.167096 61 0.01 0.782366 39.5929 -0.159273 62 0.01 0.823893 40.2717 -0.151034 63 0.01 0.87055 41.0296 -0.142328 64 0.01 0.919183 41.8745 -0.133136 65 0.01 0.970094 42.8156 -0.123435 66 0.01 1.02365 43.8634 -0.113199 67 0.01 1.07584 45.0208 -0.102441 68 0.01 1.1359 46.3111 -0.0910816 69 0.01 1.20036 47.752 -0.079078 70 0.01 1.27024 49.3655 -0.0663756 71 0.01 1.34694 51.1797 -0.0529062 72 0.01 1.4325 53.2318 -0.0385812 73 0.01 1.52203 55.5484 -0.0233608 74 0.01 1.63524 58.2224 -0.00700848 75 0.028 1.77438 61.3708 0.0426741 76 0.063 1.95996 65.2122 0.166152

=

Sample Standard Deviation 0.0112687 Numerator = 0.0276064

Denominator 0.629344 7665.2122

=

W Statistic 0.0438653 5% Critical value of 0.969 exceeds 0.0438653 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.0438653 Evidence of non-normality at 99% level of significance Page 36

Kruskal-Wallis Non-Parametric Test Parameter: Chromium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-15 7/30/2002 ND<0.01 37.5 9/24/2002 ND<0.01 37.5 10/21/2002 - ND<0.01 37.5 12/3/2002 ND<0.005 37.5 6/24/2003 ND<0.01 37.5 12/17/2003 ND<0.01 37.5 6/15/2004 ND<0.01 37.5 12/28/2004 ND<0.01 37.5 6/14/2005 ND<0.01 37.5 12/5/2005 ND<0.01 37.5 6/5/2006 ND<0.01 37.5 12/4/2006 ND<0.01 37.5 6/4/2007 ND<0.01 37.5

=

Rank Sum 487.5

=

Rank Mean 37.5

=

Background Rank Sum 487.5 Background Rank Mean 37.5=

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - ND<0.01 37.5 9/24/2002 ND<0.01 37.5 10/21/2002 ND<0.01 37.5 12/3/2002 ND<0.005 37.5 6/24/2003 ND<0.01 37.5 12/17/2003 ND<0.01 37.5 6/15/2004 ND<0.01 37.5 12/28/2004 - ND<0.01 37.5 6/14/2005 ND<0.01 37.5 12/6/2005 - ND<0.01 37.5 6/5/2006 - ND<0.01 37.5 12/4/2006 - ND<0.01 37.5 6/4/2007 - 0.063 76

=

Rank Sum 526

=

Rank Mean 40.4615 GWB-6/MW-6 7/30/2002 ND<0.01 37.5 9/24/2002 ND<0.01 37.5 10/21/2002 ND<0.01 37.5 12/3/2002 ND<0.005 37.5 6/24/2003 ND<0.01 37.5 12/17/2003 ND<0.01 37.5 6/15/2004 ND<0.01 37.5 Page 37

12/28/2004 ND<0.01 37.5 611312005 ND<0.01 37.5 12/5/2005 ND<0.01 37.5 61512006 ND<0.01 37.5 1215/2006 ND<0.01 37.5 61512007 ND<0.01 37.5

=

Rank Sum 487.5

=

Rank Mean 37.5 GWC-13/MW-137/30/2002 ND<0.01 37.5 9/24/2002 ND<0.01 37.5 10/21/2002 ND<0.01 37.5 12/312002 ND<0.005 37.5 6124/2003 - ND<0.01 37.5 12/17/2003 - ND<0.01 37.5 611512004 - ND<0.01 37.5 12/28/2004 ND<0.01 37.5 611312005 - ND<0.01 37.5 12/6/2005 ND<0.01 37.5 61512006 ND<0.01 37.5 1214/2006 ND<0.01 37.5 61412007 ND<0.01 37.5

=

Rank Sum 487.5

=

Rank Mean 37.5 GWC-14/MW-147/30/2002 ND<0.01 37.5 9/24/2002 - ND<0.01 37.5 10/21/2002 ND<0.01 37.5 12/312002 ND<0.005 37.5 6124/2003 ND<0.01 37.5 12/17/2003 0.091 77 Rank Sum = 264.5

=

Rank Mean 44.0833 GWC-5/MW-5 7/3012002 ND<0.01 37.5 9/24/2002 ND<0.01 37.5 10/21/2002 ND<0.01 37.5 12/312002 ND<0.005 37.5 6124/2003 ND<0.01 37.5 12/17/2003 0.028 75 6115/2004 ND<0.01 37.5 12/28/2004 ND<0.01 37.5 611312005 ND<0.01 37.5 12/6/2005 ND<0.01 37.5 61512006 ND<0.01 37.5 1214/2006 ND<0.01 37.5 61512007 ND<0.01 37.5

=

Rank Sum 525

=

Rank Mean 40.3846 GWC-17/MW-176/15/2005 ND<0.01 37.5 12/6/2005 ND<0.01 37.5 61512006 ND<0.01 37.5 1215/2006 ND<0.01 37.5

=

Rank Sum 150

=

Rank Mean 37.5 Page 38

GWC-18/MW-186/15/2005 ND<0.01 37.5 Rank Sum = 37.5

=

Rank Mean 37.5 GWB-16/MW-16112/5/2006 ND<0.01 37.5

=

Rank Sum 37.5 Rank Mean = 37.5 Calculation Results:

=

Kruskal-Wallis H Statistic 0.617351

=

Kruskal-Wallis H Statistic (adjusted for tied non-detects) 5.49241 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 0.617351 < 15.5073 indicating no significant group difference at 5% significance level 5.49241 < 15.5073 indicating no significant group difference at 5% significance level when adjusted for ties Page 39

Concentrations (mg/L)

Parameter: Beryllium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 75 Percent Non-Detects: 97.4026%

Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13(100%) 7/30/2002 ND<0.002 ND<0.004 9/24/2002 ND<0.002 ND<0.004 10/21/2002 - ND<0.002 ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003 ND<0.002 ND<0.004 1211712003 ND<0.002 ND<0.004 6/15/2004 ND<0.002 ND<0.004 12/28/2004 ND<0.002 ND<0.004 6/14/2005 ND<0.002 ND<0.004 12/5/2005 ND<0.002 ND<0.004 6/5/2006 ND<0.002 ND<0.004 12/4/2006 ND<0.002 ND<0.004 6/4/2007 ND<0.002 ND<0.004 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%) 7/30/2002 - ND<0.002 ND<0.004 9/24/2002 ND<0.002 ND<0.004 10/21/2002 ND<0.002 ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003 ND<0.002 ND<0.004 12/17/2003 ND<0.002 ND<0.004 6/15/2004 ND<0.002 ND<0.004 12/28/2004 - ND<0.002 ND<0.004 6/14/2005 ND<0.002 ND<0.004 12/6/2005 - ND<0.002 ND<0.004 6/5/2006 - ND<0.002 ND<O.004 12/4/2006 - ND<0.002 ND<0.004 6/4/2007 - 0.004 0.004 GWB-6/MW-6 13 13 (100%) 7/30/2002 ND<0.002 ND<0.004 9/24/2002 ND<0.002 ND<0.004 10/21/2002 ND<0.002 ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003 ND<0.002 ND<0.004 12/17/2003 ND<0.002 ND<0.004 6/15/2004 ND<0.002 ND<0.004 12/28/2004 ND<0.002 ND<0.004 6/13/2005 ND<0.OO2 ND<0.004 12/5/2005 ND<0.002 ND<0.004 6/5/2006 ND<0.002 ND<0.004 12/5/2006 ND<0.002 ND<0.004 Page 40

6/5/2007 ND<0.002 ND<0.004 GWC-13/MW-1313 13 (100%) 7/30/2002 ND<0.002 ND<0.004 9/24/2002 ND<0.002 ND<0.004 10/21/2002 ND<0.002 ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003 - ND<0.002 ND<0.004 12/17/2003 - ND<0.002 ND<0.004 6/15/2004 - ND<0.002 ND<0.004 12/28/2004 ND<0.002 ND<0.004 6/13/2005 - ND<0.002 ND<0.004 12/6/2005 ND<0.002 ND<0.004 6/5/2006 ND<0.002 ND<0.004 12/4/2006 ND<0.002 ND<0.004 6/4/2007 ND<0.002 ND<0.004 GWC-14/MW-146 5 (83.3333%) 7/30/2002 ND<0.002 ND<0.004 9/24/2002 - ND<0.002 ND<0.004 10/21/2002 ND<0.002 ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003 ND<0.002 ND<0.004 12/17/2003 0.004 0.004 GWC-5/MW-5 13 13 (100%) 7/30/2002 ND<0.002 ND<0.004 9/24/2002 ND<0.002 ND<0.004 10/21/2002 ND<0.002 ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003 ND<0.002 ND<0.004 12/17/2003 ND<0.002 ND<0.004 6/15/2004 ND<0.002 ND<0.004 12/28/2004 ND<0.002 ND<0.004 6/13/2005 ND<0.002 ND<0.004 12/6/2005 ND<0.002 ND<0.004 6/5/2006 ND<0.002 ND<0.004 12/4/2006 ND<0.002 ND<0.004 6/5/2007 ND<0.002 ND<0.004 GWC-17/MW-174 4 (100%) 6/15/2005 ND<0.002 ND<0.004 12/6/2005 ND<0.002 ND<0.004 6/5/2006 ND<0.002 ND<0.004 12/5/2006 ND<0.002 ND<0.004 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.002 ND<0.004 GWB-16/MW-1611 1 (100%) 12/5/2006 ND<0.002 ND<0.004 There is 1 unused well Well Samples ND Date Result Original EO-Blank 9 9 (100%) 6/24/2003 ND<0.002 ND<0.004 12/17/2003 ND<0.002 ND<0.004 6/15/2004 ND<0.002 ND<0.004 12/28/2004 - ND<0.002 ND<0.004 6/15/2005 - ND<0.002 ND<0.004 12/6/2005 ND<0.002 ND<0.004 6/6/2006 ND<0.002 ND<0.004 Page 41

12/5/2006 ND<0.002 ND<0.004 61512007 ND<0.002 ND<0.004 Page 42

Shapiro-Francia Test of Normality Parameter: Beryllium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL

=

Total Sample Size 77 i x(i) m(i) sum(m A 2) sum(mx) 0 0 0 0 0 1 0.0015 -2.25713 5.09463 -0.00338569 2 0.0015 -1.95996 8.93608 -0.00632564 3 0.0015 -1.77438 12.0845 -0.0089872 4 0.0015 -1.63524 14.7585 -0.0114401 5 0.0015 -1.52203 17.0751 -0.0137231 6 0.0015 -1.4325 19.1272 -0.0158719 7 0.002 -1.34694 20.9414 -0.0185657 8 0.002 -1.27024 22.5549 -0.0211062 9 0.002 -1.20036 23.9958 -0.0235069 10 0.002 -1.1359 25.286 -0.0257787 11 0.002 -1.07584 26.4434 -0.0279304 12 0.002 -1.02365 27.4913 -0.0299777 13 0.002 -0.970094 28.4324 -0.0319179 14 0.002 -0.919183 29.2773 -0.0337563 15 0.002 -0.87055 30.0351 -0.0354974 16 0.002 -0.823893 30.7139 -0.0371451 17 0.002 -0.782366 31.326 -0.0387099 18 0.002 -0.738846 31.8719 -0.0401876 19 0.002 -0.696684 32.3573 -0.0415809 20 0.002 -0.655726 32.7873 -0.0428924 21 0.002 -0615839 33.1665 -0.0441241 22 0.002 -0.576911 33.4994 -0.0452779 23 0.002 -0.541736 33.7928 -0.0463614 24 0.002 -0.504372 34.0472 -0.0473701 25 0.002 -0.467699 34.266 -0.0483055 26 0.002 -0.431644 34.4523 -0.0491688 27 0.002 -0.396142 34.6092 -0.0499611 28 0.002 -0.363809 34.7416 -0.0506887 29 0.002 -0.329206 34.85 -0.0513471 30 0.002 -0.294992 34.937 -0.0519371 31 0.002 -0.26112 35.0052 -0.0524593 32 0.002 -0.227545 35.0569 -0.0529144 33 0.002 -0.194225 35.0947 -0.0533029 34 0.002 -0.163659 35.1214 -0.0536302 35 0.002 -0.130716 35.1385 -0.0538916 36 0.002 -0.0979139 35.1481 -0.0540874 37 0.002 -0.0652187 35.1524 -0.0542179 38 0.002 -0.0325917 35.1534 -0.0542831 39 0.002 0 35.1534 -0.0542831 40 0.002 0.0325917 35.1545 -0.0542179 41 0.002 0.0652187 35.1587 -0.0540874 42 0.002 0.0979139 35.1683 -0.0538916 43 0.002 0.130716 35.1854 -0.0536302 44 0.002 0.163659 35.2122 -0.0533029 45 0.002 0.194225 35.2499 -0.0529144

, 46 0.002 0.227545 35.3017 -0.0524593

Page 43

47 0.002 0.26112 35.3699 -0.0519371 48 0.002 0.294992 35.4569 -0.0513471 49 0.002 0.329206 35.5653 -0.0506887 50 0.002 0.363809 35.6976 -0.0499611 51 0.002 0.396142 35.8546 -0.0491688 52 0.002 0.431644 36.0409 -0.0483055 53 0.002 0.467699 36.2596 -0.0473701 54 0.002 0.504372 36.514 -0.0463614 55 0.002 0.541736 36.8075 -0.0452779 56 0.002 0.576911 37.1403 -0.0441241 57 0.002 0.615839 37.5196 -0.0428924 58 0.002 0.655726 37.9496 -0.0415809 59 0.002 0.696684 38.4349 -0.0401876 60 0.002 0.738846 38.9808 -0.0387099 61 0.002 0.782366 39.5929 -0.0371451 62 0.002 0.823893 40.2717 -0.0354974 63 0.002 0.87055 41.0296 -0.0337563 64 0.002 0.919183 41.8745 -0.0319179 65 0.002 0.970094 42.8156 -0.0299777 66 0.002 1.02365 43.8634 -0.0279304 67 0.002 1.07584 45.0208 -0.0257787 68 0.002 1.1359 46.3111 -0.0235069 69 0.002 1.20036 47.752 -0.0211062 70 0.002 1.27024 49.3655 -0.0185657 71 0.002 1.34694 51.1797 -0.0158719 72 0.002 1.4325 53.2318 -0.0130069 73 0.002 1.52203 55.5484 -0.00996279 74 0.002 1.63524 58.2224 -0.00669232 75 0.002 1.77438 61.3708 -0.00314356 76 0.004 1.95996 65.2122 0.00469629 Sample Standard Deviation = 0.000353312

=

Numerator 2.20551e-005

Denominator 0.000618669 76 65.2122

=

W Statistic 0.0356492 5% Critical value of 0.969 exceeds 0.0356492 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.0356492 Evidence of non-normality at 99% level of significance Page 44

Kruskal-Wallis Non-Parametric Test Parameter: Beryllium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002 - ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 ND<0.002 38 6/15/2004 ND<0.002 38 12/28/2004 ND<0.002 38 6/14/2005 ND<0.002 38 12/5/2005 ND<0.002 38 6/5/2006 ND<0.002 38 12/4/2006 ND<0.002 38 6/4/2007 ND<0.002 38

=

Rank Sum 494 Rank Mean 38=

Background Rank Sum 494 =

Background Rank Mean 38 =

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002 - ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 ND<0.002 38 6/15/2004 ND<0.002 38 12/28/2004 - ND<0.002 38 6/14/2005 ND<0.002 38 12/6/2005 - ND<0.002 38 6/5/2006 - ND<0.002 38 12/4/2006 - ND<0.002 38 6/4/2007 - 0.004 76

=

Rank Sum 532

=

Rank Mean 40.9231 GWB-6/MW-6 7/3012002 ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 ND<0.002 38 6/15/2004 ND<0.002 38 Page 45

12/28/2004 ND<0.002 38 6/13/2005 ND<0.002 38 12/5/2005 ND<0.002 38 6/5/2006 ND<0.002 38 12/5/2006 ND<0.002 38 6/5/2007 ND<0.002 38 Rank Sum = 494

=

Rank Mean 38 GWC-13/MW-137/30/2002 ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 - ND<0.002 38 12/17/2003 - ND<0.002 38 6/15/2004 - ND<0.002 38 12/28/2004 ND<0.002 38 6/13/2005 - ND<0.002 38 12/6/2005 ND<0.002 38 6/5/2006 ND<0.002 38 12/4/2006 ND<0.002 38 6/4/2007 ND<0.002 38 Rank Sum = 494

=

Rank Mean 38 GWC-14/MW-147/30/2002 ND<0.002 38 9/24/2002 - ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 0.004 77

=

Rank Sum 267

=

Rank Mean 44.5 GWC-5/MW-5 7/3012002 ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 ND<0.002 38 6/15/2004 ND<0.002 38 12/28/2004 ND<0.002 38 6/13/2005 ND<0.002 38 12/6/2005 ND<0.002 38 6/5/2006 ND<0.002 38 12/4/2006 ND<0.002 38 6/5/2007 ND<0.002 38

=

Rank Sum 494

=

Rank Mean 38 GWC-17/MW-176/15/2005 ND<0.002 38 12/6/2005 ND<0.002 . 38 6/5/2006 ND<0.002 38 12/5/2006 ND<0.002 38

=

Rank Sum 152 Rank Mean = 38 Page 46

GWC-18/MW-186/15/2005 ND<0.002 38 Rank Sum = 38 Rank Mean = 38 GWB-16/MW-16112/5/2006 ND<0.002 38 Rank Sum = 38 Rank Mean = 38 Calculation Results:

Kruskal-Wallis H Statistic = 0.574579 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 7.56781 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 0.574579 < 15.5073 indicating no significant group difference at 5% significance level 7.56781 < 15.5073 indicating no significant group difference at 5% significance level when adjusted for ties Page 47

Concentrations (mg/L)

Parameter: Lead Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 75 Percent Non-Detects: 97.4026%

Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%) 7/30/2002 ND<0.005 ND<0.01 9/24/2002 ND<0.005 ND<0.01 10/21/2002 - ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003 ND<0.005 ND<0.01 12/17/2003 ND<0.005 ND<0.01 6/15/2004 ND<0.005 ND<0.01 12/28/2004 ND<0.005 ND<0.01 6/14/2005 ND<0.005 ND<0.01 12/5/2005 ND<0.005 ND<0.01 6/5/2006 ND<0.005 ND<0.01 12/4/2006 ND<0.005 ND<0.01 6/4/2007 ND<0.005 ND<0.01 .

There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%) 7/30/2002 - ND<0.005 ND<0.01 9/24/2002 ND<0.005 ND<0.01 10/21/2002 ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003 ND<0.005 ND<0.01 12/17/2003 ND<0.005 ND<0.01 6/15/2004 ND<0.005 ND<0.01 12/28/2004 - ND<0.005 ND<0.01 6/14/2005 ND<0.005 ND<0.01 12/6/2005 - ND<0.005 ND<0.01 6/5/2006 - ND<0.005 ND<0.01 12/4/2006 - ND<0.005 ND<0.01 6/4/2007 - 0.0305 0.0305 GWB-6/MW-6 13 13 (100%) 7/3012002 ND<0.005 ND<0.01 9/24/2002 ND<0.005 ND<0.01 10/21/2002 ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003 ND<0.005 ND<0.01 12/17/2003 ND<0.005 ND<0.01 6/15/2004 ND<0.005 ND<0.01 12/28/2004 ND<0.005 ND<0.01 6/13/2005 ND<0.005 ND<0.01 12/5/2005 ND<0.005 ND<0.01 6/5/2006 ND<0.005 ND<0.01 12/5/2006 ND<0.005 ND<0.01 Page 48

6/5/2007 ND<0.005 ND<0.01

......""'*.*,,,,_._** ~,,=_ ...... _~ *._*.

GWC-13/MW-1313 13 (100%) 7/30/2002 ND<0.005 ND<0.01 9/24/2002 ND<0.005 ND<0.01 10/21/2002 ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003 - ND<0.005 ND<0.01 12/17/2003 - ND<0.005 ND<0.01 6/15/2004 - ND<0.005 ND<0.01 12/28/2004 ND<0.005 ND<0.01 6/13/2005 - ND<0.005 ND<0.01 12/6/2005 ND<0.005 ND<0.01 6/5/2006 ND<0.005 ND<0.01 12/4/2006 ND<0.005 ND<0.01 6/4/2007 ND<0.005 ND<0.01 GWC-14/MW-146 5 (83.3333%) 7/30/2002 ND<0.005 ND<0.01 9/24/2002 - ND<0.005 ND<0.01 10/21/2002 ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003 ND<0.005 ND<0.01 12/17/2003 0.015 0.015 GWC-5/MW-5 13 13 (100%) 7/30/2002 ND<0.005 ND<0.01 9/24/2002 ND<0.005 ND<0.01 10/21/2002 ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003 ND<0.005 ND<0.01 12/17/2003 ND<0.005 ND<0.01 6/15/2004 ND<0.005 ND<0.01 12/28/2004 ND<0.005 ND<0.01 6/13/2005 ND<0.005 ND<0.01 12/6/2005 ND<0.005 ND<0.01 6/5/2006 ND<0.005 ND<0.01 12/4/2006 ND<0.005 ND<0.01 6/5/2007 ND<0.005 ND<0.01 GWC-17/MW-174 4 (100%) 6/15/2005 ND<0.005 ND<0.01 12/6/2005 ND<0.005 ND<0.01 6/5/2006 ND<0.005 ND<0.01 12/5/2006 ND<0.005 ND<0.01 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.005 ND<0.01 GWB-16/MW-16It 1 (100%) 12/5/2006 ND<0.005 ND<0.01 There is 1 unused well Well Samples ND Date Result Original EQ-Blank 9 9 (100%) 6/24/2003 ND<0.005 ND<0.01 12/17/2003 ND<0.005 ND<0.01 6/15/2004 ND<0.005 ND<0.01 12/28/2004 - ND<0.005 ND<0.01 6/15/2005 - ND<0.005 ND<0.01 12/6/2005 ND<0.005 ND<0.01 6/6/2006 ND<0.005 ND<0.01 Page 49

12/5/2006 ND<0,005 ND<0,01 61512007 ND<0,005 ND<0,01 Page 50

Shapiro-Francia Test of Normality Parameter: Lead All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL

=

Total Sample Size 77 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 0.005 -2.25713 5.09463 -0.0112856 2 0.005 -1.95996 8.93608 -0.0210855 3 0.005 -1.77438 12.0845 -0.0299573 4 0.005 -1.63524 14.7585 -0.0381335 5 0.005 -1.52203 17.0751 -0.0457437 6 0.005 -1.4325 19.1272 -0.0529062 7 0.005 -1.34694 20.9414 -0.0596409 8 0.005 -1.27024 22.5549 -0.0659921 9 0.005 -1.20036 23.9958 -0.0719939 10 0.005 -1.1359 25.286 -0.0776734 11 0.005 -1.07584 26.4434 -0.0830526 12 0.005 -1.02365 27.4913 -0.0881708 13 0.005 -0.970094 28.4324 -0.0930213 14 0.005 -0.919183 29.2773 -0.0976172 15 0.005 -0.87055 30.0351 -0.10197 16 0.005 -0.823893 30.7139 -0.106089 17 0.005 -0.782366 31.326 -0.110001 18 0.005 -0.738846 31.8719 -0.113695 19 0.005 -0.696684 32.3573 -0.117179 20 0.005 -0.655726 32.7873 -0.120458 21 0.005 -0.615839 33.1665 -0.123537 22 0.005 -0.576911 33.4994 -0.126421 23 0.005 -0.541736 33.7928 -0.12913 24 0.005 -0.504372 34.0472 -0.131652 25 0.005 -0.467699 34.266 -0.13399 26 0.005 -0.431644 34.4523 -0.136149 27 0.005 -0.396142 34.6092 -0.138129 28 0.005 -0.363809 34.7416 -0.139948 29 0.005 -0.329206 34.85 -0.141594 30 0.005 -0.294992 34.937 -0.143069 31 0.005 -0.26112 35.0052 -0.144375 32 0.005 -0.227545 35.0569 -0.145513 33 0.005 -0.194225 35.0947 -0.146484 34 0.005 -0.163659 35.1214 -0.147302 35 0.005 -0.130716 35.1385 -0.147956 36 0.005 -0.0979139 35.1481 -0.148445 37 0.005 -0.0652187 35.1524 -0.148771 38 0.005 -0.0325917 35.1534 -0.148934 39 0.005 o 35.1534 -0.148934 40 0.005 0.0325917 35.1545 -0.148771 41 0.005 0.0652187 35.1587 -0.148445 42 0.005 0.0979139 35.1683 -0.147956 43 0.005 0.130716 35.1854 -0.147302 44 0.005 0.163659 35.2122 -0.146484 45 0.005 0.194225 35.2499 -0.145513 46 0.005 0.227545 35.3017 -0.144375 Page 51

47 0.005 0.26112 35.3699 -0.143069 48 0.005 0.294992 35.4569 -0.141594 49 0.005 0.329206 35.5653 -0.139948 50 0.005 0.363809 35.6976 -0.138129 51 0.005 0.396142 35.8546 -0.136149 52 0.005 0.431644 36.0409 -0.13399 53 0.005 0.467699 36.2596 -0.131652 54 0.005 0.504372 36.514 -0.12913 55 0.005 0.541736 36.8075 -0.126421 56 0.005 0.576911 37.1403 -0.123537 57 0.005 0.615839 37.5196 -0.120458 58 0.005 0.655726 37.9496 -0.117179 59 0.005 0.696684 38.4349 -0.113695 60 0.005 0.738846 38.9808 -0.110001 61 0.005 0.782366 39.5929 -0.106089 62 0.005 0.823893 40.2717 -0.10197 63 0.005 0.87055 41.0296 -0.0976172 64 0.005 0.919183 41.8745 -0.0930213 65 0.005 0.970094 42.8156 -0.0881708 66 0.005 1.02365 43.8634 -0.0830526 67 0.005 1.07584 45.0208 -0.0776734 68 0.005 1.1359 46.3111 -0.0719939 69 0.005 1.20036 47.752 -0.0659921 70 0.0075 1.27024 49.3655 -0.0564653 71 0.0075 1.34694 51.1797 -0.0463633 72 0.0075 1.4325 53.2318 -0.0356195 73 0.0075 1.52203 55.5484 -0.0242042 74 0.0075 1.63524 58.2224 -0.01194 75 0.0075 1.77438 61.3708 0.00136787 76 0.015 1.95996 65.2122 0.0307673 Sample Standard Deviation = 0.00315109 Numerator = 0.000946626

Denominator 0.0492111 76 65.2122 W Statistic = 0.019236 5% Critical value of 0.969 exceeds 0.019236 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.019236 Evidence of non-normality at 99% level of significance Page 52

Kruskal-Wallis Non-Parametric Test Parameter: Lead Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL KruskalWallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002 - ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 ND<0.005 38 6/15/2004 ND<0.005 38 12/28/2004 ND<0.005 38 6/14/2005 ND<0.005 38 12/5/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/4/2006 ND<0.005 38 6/4/2007 ND<0.005 38

=

Rank Sum 494 Rank Mean 38=

Background Rank Sum 494 =

Background Rank Mean 38 =

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002 - ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 ND<0.005 38 6/15/2004 ND<0.005 38 12/28/2004 - ND<0.005 38 6/14/2005 ND<0.005 38 12/6/2005 - ND<0.005 38 6/5/2006 - ND<0.005 38 12/4/2006 - ND<0.005 38 6/4/2007 - 0.0305 77

=

Rank Sum 533 Rank Mean 41=

GWB-6/MW-6 7/3012002 ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 ND<0.005 38 6/15/2004 ND<0.005 38 Page 53

12/28/2004 ND<0.005 38 6/13/2005 ND<0.005 38 12/5/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/5/2006 ND<0.005 38 6/5/2007 ND<0.005 38 Rank Sum = 494 Rank Mean = 38 GWC-13/MW-137/30/2002 ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 - ND<0.005 38 12/17/2003 - ND<0.005 38 6/15/2004 - ND<0.005 38 12/28/2004 ND<0.005 38 6/13/2005 - ND<0.005 38 12/6/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/4/2006 ND<0.005 38 6/4/2007 ND<0.005 38 Rank Sum = 494 Rank Mean = 38 GWC-14/MW-147/30/2002 ND<0.005 38 9/24/2002 - ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 0.015 76 Rank Sum = 266 Rank Mean = 44.3333 GWC-5/MW-5 7/30/2002 ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 ND<0.005 38 6/15/2004 ND<0.005 38 12/28/2004 ND<0.005 38 6/13/2005 ND<0.005 38 12/6/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/4/2006 ND<0.005 38 6/5/2007 ND<0.005 38 Rank Sum = 494 Rank Mean = 38 GWC-17/MW-176/15/2005 ND<0.005 38 12/6/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/5/2006 ND<0.005 38 Rank Sum = 152 Rank Mean =38 Page 54

GWC-18/MW-186/15/2005 ND<0.005 38

=

Rank Sum 38

=

Rank Mean 38 GWB-16/MW-16112/5/2006 ND<0.005 38 Rank Sum = 38

=

Rank Mean 38 Calculation Results:

=

Kruskal-Wallis H Statistic 0.560773

=

Kruskal-Wallis H Statistic (adjusted for tied non-detects) 7.38596 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 0.560773 < 15.5073 indicating no significant group difference at 5% significance level 7.38596 < 15.5073 indicating no significant group difference at 5% significance level when adjusted for ties Page 55

Concentrations (mg/L)

Parameter: Vanadium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 75 Percent Non-Detects: 97.4026%

Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%) 7/30/2002 ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002 - ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 ND<0.025 ND<0.05 6/15/2004 ND<0.025 ND<0.05 12/28/2004 ND<0.025 ND<0.05 6/14/2005 ND<0.025 ND<0.05 12/5/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/4/2006 ND<0.025 ND<0.05 6/4/2007 ND<0.025 ND<0.05 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%) 7/30/2002 - ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 ND<0.025 ND<0.05 6/15/2004 ND<0.025 ND<0.05 12/28/2004 - ND<0.025 ND<0.05 6/14/2005 ND<0.025 ND<0.05 12/6/2005 - ND<0.025 ND<0.05 6/5/2006 - ND<0.025 ND<0.05 12/4/2006 - ND<0.025 ND<0.05 6/4/2007 - 0.0525 0.0525 GWB-6/MW-6 13 13 (100%) 7/30/2002 ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 ND<0.025 ND<0.05 6/15/2004 ND<0.025 ND<0.05 12/28/2004 ND<0.025 ND<0.05 6/13/2005 ND<0.025 ND<0.05 12/5/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/5/2006 ND<0.025 ND<0.05 Page 56

6/5/2007 ND<0.025 ND<0.05

• • u *** ** _ _ _

,~_,~"~",,."~~_* ~"=_*.'='"'&"__""__ >_"*__ *_&.~.,'"~ __'""~~._*.'.*._._,..,.",*.~~~>_,~** _.~_

W' , _".__=''''..~_"'.,_'~ __ " ~,~m~~~~,"_'_. __ __

".*,.~,",*=,_,'~ * **__

."~,.*_*",*~_,,,.,,",_,, ,~.,=**,=~

GWC-13/MW-1313 13 (100%) 7/30/2002 ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 - ND<0.025 ND<0.05 12/17/2003 - ND<0.025 ND<0.05 6/15/2004 - ND<0.025 ND<0.05 12/28/2004 ND<0.025 ND<0.05 6/13/2005 - ND<0.025 ND<0.05 12/6/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/4/2006 ND<0.025 ND<0.05 6/4/2007 ND<0.025 ND<0.05.

GWC-14/MW-146 5 (83.3333%) 7/30/2002 ND<0.025 ND<0.05 9/24/2002 - ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 0.06 0.06 GWC-5/MW-5 13 13 (100%) 7130/2002 ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 ND<0.025 ND<0.05.

6/15/2004 ND<0.025 ND<0.05 12/28/2004 ND<0.025 ND<0.05 6/13/2005 ND<0.025 ND<0.05 12/6/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/4/2006 ND<0.025 ND<0.05 6/5/2007 ND<0.025 ND<0.05 GWC-17/MW-174 4 (100%) 6/15/2005 ND<0.025 ND<0.05 12/6/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/5/2006 ND<0.025 ND<0.05 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.025 ND<0.05.

GWB-16/MW-1611. 1 (100%) 12/5/2006 ND<0.025 ND<0.05 There is 1 unused well Well Samples NO Date Result Original EO-Blank 9 9 (100%) 6/24/2003 ND<0.025 ND<0.05 12/17/2003 ND<0.025 ND<0.05 6/15/2004 ND<0.025 ND<0.05 12/28/2004 - ND<0.025 ND<0.05 6/15/2005 - ND<0.025 ND<0.05 12/6/2005 ND<0.025 ND<0.05 6/6/2006 ND<0.025 ND<0.05 .

Page 57

12/5/2006 ND<0.025 ND<0.05 61512007 ND<0.025 ND<0.05 Page 58

Shapiro-Francia Test of Normality Parameter: Vanadium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL

=

Total Sample Size 77 i x(i) m(i) sum(mI\2) sum(mx) o 0 o o o 1 0.005 -2.25713 5.09463 -0.0112856 2 0.005 -1.95996 8.93608 -0,0210855 3 0.005 -1.77438 12.0845 -0.0299573 4 0.005 -1.63524 14,7585 -0.0381335 5 0.005 -1.52203 17.0751 -0.0457437 6 0.005 -1.4325 19,1272 -0.0529062 7 0.025 -1,34694 20,9414 -0.0865797 8 0,025 -1.27024 22.5549 -0.118336 9 0.025 -1.20036 23.9958 -0.148345 10 0.025 -1,1359 25.286 -0.176742 11 0.025 -1.07584 26.4434 -0.203638 12 0.025 -1.02365 27.4913 -0.229229 13 0.025 -0.970094 28.4324 -0.253482 14 0.025 ~0.919183 29.2773 -0.276461 15 0,025 -0.87055 30.0351 -0.298225 16 0.025 -0.823893 30.7139 -0.318822 17 0.025 -0.782366 31.326 -0.338381 18 0.025 -0.738846 31.8719 -0.356853 19 0.025 -0.696684 32,3573 -0.37427 20 0,025 -0.655726 32.7873 -0.390663 21 0.025 -0.615839 33.1665 -0.406059 22 0.025 -0.576911 33.4994 -0.420482 23 0.025 -0.541736 33.7928 -0.434025 24 0,025 -0.504372 34.0472 -0.446634 25 0.025 -0.467699 34.266 -0.458327 26 0.025 -0.431644 34.4523 -0.469118 27 0.025 -0.396142 34.6092 -0.479021 28 0.025 -0.363809 34.7416 -0.488117 29 0.025 -0,329206 34.85 -0.496347 30 0.025 -0.294992 34.937 -0.503722 31 0.025 -0.26112 35.0052 -0.51025 32 0.025 -0.227545 35.0569 -0.515938 33 0.025 -0.194225 35.0947 -0.520794 34 0.025 -0.163659 35.1214 -0.524885 35 0.025 -0,130716 35.1385 -0.528153 36 0.025 -0.0979139 35.1481 -0.530601 37 0.025 -0.0652187 35.1524 -0.532231 38 0.025 -0.0325917 35,1534 -0.533046 39 0.025 o 35.1534 -0.533046 40 0,025 0.0325917 35.1545 -0,532231 41 0.025 0.0652187 35.1587 -0.530601 42 0.025 0,0979139 35.1683 -0.528153 43 0,025 0.130716 35.1854 -0.524885 44 0.025 0.163659 35,2122 -0.520794 45 0.025 0.194225 35.2499 -0.515938 46 0.025 0.227545 35.3017 -0.51025 Page 59

47 0.025 0.26112 35.3699 -0.503722 48 0.025 0.294992 35.4569 -0.496347 49 0.025 0.329206 35.5653 -0.488117 50 0.025 0.363809 35.6976 -0.479021 51 0.025 0.396142 35.8546 -0.469118 52 0.025 0.431644 36.0409 -0.458327 53 0.025 0.467699 36.2596 -0.446634 54 0.025 0.504372 36.514 -0.434025 55 0.025 0.541736 36.8075 -0.420482 56 0.025 0.576911. 37.1403 -0.406059 57 0.025 0.615839 37.5196 -0.390663 58 0.025 0.655726 37.9496 -0.37427 59 0.025 0.696684 38.4349 -0.356853 60 0.025 0.738846 38.9808 -0.338381 61 0.025 0.782366 39.5929 -0.318822 62 0.025 0.823893 40.2717 -0.298225 63 0.025 0.87055 41.0296 -0.276461 64 0.025 0.919183 41.8745 -0.253482 65 0.025 0.970094 42.8156 -0.229229 66 0.025 1.02365 43.8634 -0.203638 67 0.025 1.07584 45.0208 -0.176742 68 0.025 1.1359 46.3111 -0.148345 69 0.025 1.20036 47.752 -0.118336 70 0.025 1.27024 49.3655 -0.0865797 71 0.025 1.34694 51.1797 -0.0529062 72 0.025 1.4325 53.2318 -0.0170936 73 0.025 1.52203 55.5484 0.0209573 74 0.025 1.63524 58.2224 0.0618381 75 0.025 1.77438 61.3708 0.106198 76 0.0525 1.95996 65.2122 0.209096

=

Sample Standard Deviation 0.00755533

=

Numerator 0.043721

Denominator 0.282911 76 65.2122

=

W Statistic 0.15454 5% Critical value of 0.969 exceeds 0.15454 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.15454 Evidence of non-normality at 99% level of significance Page 60

Kruskal-Wallis Non-Parametric Test Parameter: Vanadium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.025 38 9/24/2002 ND<0.025 38 10/21/2002 - ND<0.025 38 12/312002 ND<0.005 38 6124/2003 ND<0.025 38 12/17/2003 ND<0.025 38 611512004 ND<0.025 38 12/28/2004 ND<0.025 38 611412005 ND<0.025 38 12/5/2005 ND<0.025 38 61512006 ND<0.025 38 1214/2006 ND<0.025 38 6/4/2007 ND<0.025 38

=

Rank Sum 494 Rank Mean = 38 Background Rank Sum 494 =

Background Rank Mean 38 =

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002- ND<0.025 38 9/24/2002 ND<0.025 38 10/21/2002 ND<0.025 38 12/312002 ND<0.005 38 6124/2003 ND<0.025 38 12/17/2003 ND<0.025 38 611512004 ND<0.025 38 12/28/2004 - ND<0.025 38 611412005 ND<0.025 38 12/6/2005 - ND<0.025 38 61512006 - ND<0.025 38 1214/2006 - ND<0.025 38 61412007 - 0.0525 76

=

Rank Sum 532

=

Rank Mean 40.9231 GWB-6/MW-6 7/3012002 ND<0.025 38 9/24/2002 ND<0.025 38 10/21/2002 ND<0.025 38 12/312002 ND<0.005 38 6124/2003 ND<0.025 38 12/17/2003 ND<0.025 38 611512004 ND<0.025 38 Page 61

12/28/2004 ND<0.025 38 6/13/2005 ND<0.025 38 12/5/2005 ND<0.025 38 6/5/2006 ND<0.025 38 12/5/2006 ND<0.025 38 6/5/2007 ND<0.025 38

=

Rank Sum 494

=

Rank Mean 38 GWC-13/MW-137/30/2002 ND<0.025 38 9/24/2002 ND<0.025 38 10/21/2002 ND<0.025 38 12/3/2002 ND<0.005 38 6/24/2003 - ND<0.025 38 12/17/2003 - ND<0.025 38 6/15/2004 - ND<0.025 38 12/28/2004 ND<0.025 38 6/13/2005 - ND<0.025 38 12/6/2005 ND<0.025 38 6/5/2006 ND<0.025 38 12/4/2006 ND<0.025 38 6/4/2007 ND<0.025 38

=

Rank Sum 494

=

Rank Mean 38 GWC-14/MW-147/30/2002 ND<0.025 38 9/24/2002 - ND<0.025 38 10/21/2002 ND<0.025 38 12/3/2002 ND<0.005 38 6/24/2003 ND<0.025 38 12/17/2003 0.06 77

=

Rank Sum 267

=

Rank Mean 44.5 GWC-5/MW-5 7/30/2002 ND<0.025 38 9/24/2002 ND<0.025 38 10/21/2002 ND<0.025 38 12/3/2002 ND<0.005 38 6/24/2003 ND<0.025 38 12/17/2003 ND<0.025 38 6/15/2004 ND<0.025 38 12/28/2004 ND<0.025 38 6/13/2005 ND<0.025 38 12/6/2005 ND<0.025 38 6/5/2006 ND<0.025 38 12/4/2006 ND<0.025 38 6/5/2007 ND<0.025 38

=

Rank Sum 494

=

Rank Mean 38 GWC-17/MW-17 6/15/2005 ND<0.025 38 12/6/2005 ND<0.025 38 6/5/2006 ND<0.025 38 12/5/2006 ND<0.025 38

=

Rank Sum 152

=

Rank Mean 38 Page 62

GWC-18/MW-186/15/2005 ND<0.025 38

=

Rank Sum 38

=

Rank Mean 38 GWB-16/MW-16112/5/2006 ND<0.025 38

=

Rank Sum 38

=

Rank Mean 38 Calculation Results:

=

Kruskal-Wallis H Statistic 0.574579

=

Kruskal-Wallis H Statistic (adjusted for tied non-detects) 7.56781 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 0.574579 < 15.5073 indicating no significant group difference at 5% significance level 7.56781 < 15.5073 indicating no significant group difference at 5% significance level when adjusted for ties Page 63

Concentrations (lJg/L)

Parameter: 1,1-Dichloroethane Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 59 Percent Non-Detects: 76.6234%

Total Background Samples: 13 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1513 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/4/2007 ND<2.5 ND<5 There are 8 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 13 13 (100%) 7/30/2002 - ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005 - ND<2.5 ND<5 6/5/2006 - ND<2.5 ND<5 12/4/2006 - ND<2.5 ND<5 6/4/2007 - ND<2.5 ND<5 GWB-6/MW-6 13 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 Page 64

6/5/2007 ND<2.5 ND<5 GWG-13/MW-1313 1 (7.69231 %) 7/30/2002 ND<2.5 ND<5 9/24/2002 6 6 10/21/2002 6 6 12/3/2002 7 7 6/24/2003 - 9 9 12/17/2003 - 20.5 20.5 6/15/2004 - 18 18 12/28/2004 16 16 6/13/2005 - 15 15 12/6/2005 18 18 6/5/2006 15 15 12/4/2006 20 20 6/4/2007 28 28 GWG-14/MW-146 0(0%) 7/30/2002 13 13 9/24/2002 - 21 21 10/21/2002 17 17 12/3/2002 16 16 6/24/2003 10 10 12/17/2003 10 10 GWG-5/MW-5 13 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 GWG-17/MW-174 4 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 GWG-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 GWB-16/MW-16It 1 (100%) 12/5/2006 ND<2.5 ND<5 There are 2 unused wells Well Samples NO Date Result Original EQ-Blank 9 9 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/6/2006 ND<2.5 ND<5 Page 65

12/5/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 Trip Blank 4 4 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 Page 66

Shapiro-Francia Test of Normality Parameter: 1,1-Dichloroethane All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size = 77 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 2.5 -2.25713 5.09463 -5.64282 2 2.5 -1.95996 8.93608 -10.5427 3 2.5 -1.77438 12.0845 -14.9787 4 2.5 -1.63524 14.7585 -19.0668 5 2.5 -1.52203 17.0751 -22.8718 6 2.5 -1.4325 19.1272 -26.4531 7 2.5 -1.34694 20.9414 -29.8205 8 2.5 -1.27024 22.5549 -32.996 9 2.5 -1.20036 23.9958 -35.9969 10 2.5 -1.1359 25.286 -38.8367 11 2.5 -1.07584 26.4434 -41.5263 12 2.5 -1.02365 27.4913 -44.0854 13 2.5 -0.970094 28.4324 -46.5106 14 2.5 -0.919183 29.2773 -48.8086 15 2.5 -0.87055 30.0351 -50.985 16 2.5 -0.823893 30.7139 -53.0447 17 2.5 -0.782366 31.326 -55.0006 18 2.5 -0.738846 31.8719 -56.8477 19 2.5 -0.696684 32.3573 -58.5894 20 2.5 -0.655726 32.7873 -60.2288 21 2.5 -0.615839 33.1665 -61.7684 22 2.5 -0.576911 33.4994 -63.2106 23 2.5 -0.541736 33.7928 -64.565 24 2.5 -0.504372 34.0472 -65.8259 25 2.5 -0.467699 34.266 -66.9952 26 2.5 -0.431644 34.4523 -68.0743 27 2.5 -0.396142 34.6092 -69.0646 28 2.5 -0.363809 34.7416 -69.9741 29 2.5 -0.329206 34.85 -70.7972 30 2.5 -0.294992 34.937 -71.5346 31 2.5 -0.26112 35.0052 -72.1874 32 2.5 -0.227545 35.0569 -72.7563 33 2.5 -0.194225 35.0947 -73.2419 34 2.5 -0.163659 35.1214 -73.651 35 2.5 -0.130716 35.1385 -73.9778 36 2.5 -0.0979139 35.1481 -74.2226 37 2.5 -0.0652187 35.1524 -74.3856 38 2.5 -0.0325917 35.1534 -74.4671 39 2.5 o 35.1534 -74.4671 40 2.5 0.0325917 35.1545 -74.3856 41 2.5 0.0652187 35.1587 -74.2226 42 2.5 0.0979139 35.1683 -73.9778 43 2.5 0.130716 35.1854 -73.651 44 2.5 0.163659 35.2122 -73.2419 45 2.5 0.194225 35.2499 -72.7563 46 2.5 0.227545 35.3017 -72.1874 Page 67

47 2.5 0.26112 35.3699 -71.5346 48 2.5 0.294992 35.4569 -70.7972 49 2.5 0.329206 35.5653 -69.9741 50 2.5 0.363809 35.6976 -69.0646 51 2.5 0.396142 35.8546 -68.0743 52 2.5 0.431644 36.0409 -66.9952 53 2.5 0.467699 36.2596 -65.8259 54 2.5 0.504372 36.514 -64.565 55 2.5 0.541736 36.8075 -63.2106 56 2.5 0.576911 37.1403 -61.7684 57 2.5 0.615839 37.5196 -60.2288 58 2.5 0.655726 37.9496 -58.5894 59 2.5 0.696684 38.4349 -56.8477 60 6 0.738846 38.9808 -52.4147 61 6 0.782366 39.5929 -47.7205 62 7 0.823893 40.2717 -41.9532 63 9 0.87055 41.0296 -34.1183 64 10 0.919183 41.8745 -24.9264 65 10 0.970094 42.8156 -15.2255 66 13 1.02365 43.8634 -1.91801 67 15 1.07584 45.0208 14.2195 68 15 1.1359 46.3111 31.258 69 16 1.20036 47.752 50.4637 70 16 1.27024 49.3655 70.7875 71 17 1.34694 51.1797 93.6855 72 18 1.4325 53.2318 119.471 73 18 1.52203 55.5484 146.867 74 20 1.63524 58.2224 179.572 75 20.5 1.77438 61.3708 215.947 76 21 1.95996 65.2122 257.106

=

Sample Standard Deviation 5.92588

=

Numerator 66103.4

Denominator 174040 76 65.2122

=

W Statistic 0.379818 5% Critical value of 0.969 exceeds 0.379818 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.379818 Evidence of non-normality at 99% level of significance Page 68

Kruskal-Wallis Non-Parametric Test Parameter: 1,1-Dichloroethane Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<2.5 30 9/24/2002 ND<2.5 30 10/21/2002 - ND<2.5 30 12/3/2002 ND<2.5 30 6/24/2003 ND<2.5 30 12/17/2003 ND<2.5 30 6/15/2004 ND<2.5 30 12/28/2004 ND<2.5 30 6/14/2005 ND<2.5 30 12/5/2005 ND<2.5 30 6/5/2006 ND<2.5 30 12/4/2006 ND<2.5 30 6/4/2007 ND<2.5 30

=

Rank Sum 390 Rank Mean 30=

Background Rank Sum 390 =

Background Rank Mean 30 =

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002 - ND<2.5 30 9/24/2002 ND<2.5 30 10/21/2002 ND<2.5 30 12/3/2002 ND<2.5 30 6/24/2003 ND<2.5 30 12/17/2003 ND<2.5 30 6/15/2004 ND<2.5 30 12/28/2004 - ND<2.5 30 6/14/2005 ND<2.5 30 12/6/2005 - ND<2.5 30 6/5/2006 - ND<2.5 30 12/4/2006 - ND<2.5 30 6/4/2007 - ND<2.5 30

=

Rank Sum 390 Rank Mean 30=

GWB-6/MW-6 7/3012002 ND<2.5 30 9/24/2002 ND<2.5 30 10/21/2002 ND<2.5 30 12/3/2002 ND<2.5 30 6/24/2003 ND<2.5 30 12/17/2003 ND<2.5 30 6/15/2004 ND<2.5 30 Page 69

12/28/2004 ND<2.5 30 6/13/2005 ND<2.5 30 12/5/2005 ND<2.5 30 6/5/2006 ND<2.5 30 12/5/2006 ND<2.5 30 6/5/2007 ND<2.5 30 Rank Sum = 390 Rank Mean = 30 GWC-13/MW-137/30/2002 ND<2.5 30 9/24/2002 6 60 10/21/2002 6 61 12/3/2002 7 62 6/24/2003 - 9 63 12/17/2003 - 20.5 75 6/15/2004 - 18 72 12/28/2004 16 69 6/13/2005 - 15 67 12/6/2005 18 73 6/5/2006 15 68 12/4/2006 20 74 6/4/2007 28 77 Rank Sum = 851 Rank Mean = 65.4615 GWC-14/MW-147/30/2002 13 66 9/24/2002 - 21 76 10/21/2002 17 71 12/3/2002 16 70 6/24/2003 10 64 12/17/2003 10 65 Rank Sum = 412 Rank Mean = 68.6667 GWC-5/MW-5 7/30/2002 ND<2.5 30 9/24/2002 ND<2.5 30 10/21/2002 ND<2.5 30 12/3/2002 ND<2.5 30 6/24/2003 ND<2.5 30 12/17/2003 ND<2.5 30 6/15/2004 ND<2.5 30 12/28/2004 ND<2.5 30 6/13/2005 ND<2.5 30 12/6/2005 ND<2.5 30 6/5/2006 ND<2.5 30 12/4/2006 ND<2.5 30 6/5/2007 ND<2.5 30 Rank Sum = 390 Rank Mean = 30 GWC-17/MW-176/15/2005 ND<2.5 30 12/6/2005 ND<2.5 30 6/5/2006 ND<2.5 30 12/5/2006 ND<2.5 30 Rank Sum = 120 Rank Mean = 30 Page 70

GWC-18/MW-186/15/2005 ND<2.5 30

=

Rank Sum 30

=

Rank Mean 30 GWB-16/MW-16112/5/2006 ND<2.5 30 Rank Sum = 30

=

Rank Mean 30 Calculation Results:

=

Kruskal-Wallis H Statistic 38.1247

=

Kruskal-Wallis H Statistic (adjusted for tied non-detects) 69.2942 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 38.1247 > 15.5073 indicating a significant group difference at 5% significance level 69.2942> 15.5073 indicating a significant group difference at 5% significance level when adjusted for ties Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 30 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 30 o 20.4136 GWB-6/MW-6 30 o 20.4136 GWC-13/MW-1365.4615 35.4615 20.4136 GWC-14/MW-1468.6667 38.6667 25.6865 GWC-5/MW-5 30 o 20.4136 GWC-17/MW-1730 o 29.7576 GWC-18/MW-1830 o 54.0092 GWB-16/MW-16130 o 54.0092 Individual Well Comparisons at Groupwise 5% Significance Level (0.625% Significance Level per comparison) 0.625% Z score is 2.51213 Mean background rank is 30 Well Mean Rank Dif from Bkg Critical Value GWA-7/MW-7 30 o 22.0439 GWB-6/MW-6 30 o 22.0439 GWC-13/MW-1365.4615 35.4615 22.0439 GWC-14/MW-1468.6667 38.6667 27.7379 GWC-5/MW-5 30 o 22.0439 GWC-17/MW-1730 o 32.1342 GWC-18/MW-1830 o 58.3226 GWB-16/MW-16130 o 58.3226 Page 71

Concentrations (lJg/L)

Parameter: Chlorobenzene Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 70 Percent Non-Detects: 90.9091%

Total Background Samples: 13 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1513 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/4/2007 ND<2.5 ND<5 There are 8 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 13 13 (100%) 7/30/2002 - ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005 - ND<2.5 ND<5 6/5/2006 - ND<2.5 ND<5 12/4/2006 - ND<2.5 ND<5 6/4/2007 - ND<2.5 ND<5 GWB-6/MW-6 13 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 Page 72

6/5/2007 ND<2.5 ND<5

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GWC-13/MW-1313 11 (84.6154%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 - ND<2.5 ND<5 12/17/2003 - ND<2.5 ND<5 6/15/2004 - ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 - ND<2.5 ND<5 12/6/2005 4 4 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/4/2007 15 15 GWC-14/MW-146 1 (16.6667%) 7/30/2002 ND<2.5 ND<5 9/24/2002 - 8 8 10/21/2002 9 9 12/3/2002 10 10 6/24/2003 7 7 12/17/2003 19 19 GWC-5/MW-5 13 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5

\ 12/17/2003 ND<2.5 ND<5

)

co.,:; 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 GWC-17/MW-174 4 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 GWB-16/MW-1611 1 (100%) 12/5/2006 ND<2.5 ND<5 There are 2 unused wells Well Samples ND Date Result Original EO-Blank 9 9 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/6/2006 ND<2.5 ND<5 Page 73

12/5/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 Trip Blank 4 4 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 Page 74

Shapiro-Francia Test of Normality Parameter: Chlorobenzene All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL

=

Total Sample Size 77 i x(i) m(i) sum(mJ\2) sum(mx) o 0 o o o 1 2.5 -2.25713 5.09463 -5.64282 2 2.5 -1.95996 8.93608 -10.5427 3 2.5 -1.77438 12.0845 -14.9787 4 2.5 -1.63524 14.7585 -19.0668 5 2.5 -1.52203 17.0751 -22.8718 6 2.5 -1.4325 19.1272 -26.4531 7 2.5 -1.34694 20.9414 -29.8205 8 2.5 -1.27024 22.5549 -32.996 9 2.5 -1.20036 23.9958 -35.9969 10 2.5 -1.1359 25.286 -38.8367 11 2.5 -1.07584 26.4434 -41.5263 12 2.5 -1.02365 27.4913 -44.0854 13 2.5 -0.970094 28.4324 -46.5106 14 2.5 -0.919183 29.2773 -48.8086 15 2.5 -0.87055 30.0351 -50.985 16 2.5 -0.823893 30.7139 -53.0447 17 2.5 -0.782366 31.326 -55.0006 18 2.5 -0.738846 31.8719 -56.8477 19 2.5 -0.696684 32.3573 -58.5894 20 2.5 -0.655726 32.7873 -60.2288 21 2.5 -0.615839 33.1665 -61.7684 22 2.5 -0.576911 33.4994 -63.2106 23 2.5 -0.541736 33.7928 -64.565 24 2.5 -0.504372 34.0472 -65.8259 25 2.5 -0.467699 34.266 -66.9952 26 2.5 -0.431644 34.4523 -68.0743 27 2.5 -0.396142 34.6092 -69.0646 28 2.5 -0.363809 34.7416 -69.9741 29 2.5 -0.329206 34.85 -70.7972 30 2.5 -0.294992 34.937 -71.5346 31 2.5 -0.26112 35.0052 -72.1874 32 2.5 -0.227545 35.0569 -72.7563 33 2.5 -0.194225 35.0947 -73.2419 34 2.5 -0.163659 35.1214 -73.651 35 2.5 -0.130716 35.1385 -73.9778 36 2.5 -0.0979139 35.1481 -74.2226 37 2.5 -0.0652187 35.1524 -74.3856 38 2.5 -0.0325917 35.1534 -74.4671 39 2.5 o 35.1534 -74.4671 40 2.5 0.0325917 35.1545 -74.3856 41 2.5 0.0652187 35.1587 -74.2226 42 2.5 0.0979139 35.1683 -73.9778 43 2.5 0.130716 35.1854 -73.651 44 2.5 0.163659 35.2122 -73.2419 45 2.5 0.194225 35.2499 -72.7563 46 2.5 0.227545 35.3017 -72.1874 Page 75

47 2.5 0.26112 35.3699 -71.5346 48 2.5 0.294992 35.4569 -70.7972 49 2.5 0.329206 35.5653 -69.9741 50 2.5 0.363809 35.6976 -69.0646 51 2.5 0.396142 35.8546 -68.0743 52 2.5 0.431644 36.0409 -66.9952 53 2.5 0.467699 36.2596 -65.8259 54 2.5 0.504372 36.514 -64.565 55 2.5 0.541736 36.8075 -63.2106 56 2.5 0.576911 37.1403 -61.7684 57 2.5 0.615839 37.5196 -60.2288 58 2.5 0.655726 37.9496 -58.5894 59 2.5 0.696684 38.4349 -56.8477 60 2.5 0.738846 38.9808 -55.0006 61 2.5 0.782366 39.5929 -53.0447 62 2.5 0.823893 40.2717 -50.985 63 2.5 0.87055 41.0296 -48.8086 64 2.5 0.919183 41.8745 -46.5106 65 2.5 0.970094 42.8156 -44.0854 66 2.5 1.02365 43.8634 -41.5263 67 2.5 1.07584 45.0208 -38.8367 68 2.5 1.1359 46.3111 -35.9969 69 2.5 1.20036 47.752 -32.996 70 2.5 1.27024 49.3655 -29.8205 71 4 1.34694 51.1797 -24.4327 72 7 1.4325 53.2318 -14.4052 73 8 1.52203 55.5484 -2.22889 74 9 1.63524 58.2224 12.4882 75 10 1.77438 61.3708 30.232 76 15 1.95996 65.2122 59.6314 Sample Standard Deviation == 2.66847 Numerator == 3555.91 Denominator == 35291.3 == 76 65.2122 W Statistic == 0.100759 5% Critical value of 0.969 exceeds 0.100759 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.100759 Evidence of non-normality at 99% level of significance Page 76

Kruskal-Wallis Non-Parametric Test Parameter: Chlorobenzene Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-15 7/30/2002 ND<2.5 35.5 9/24/2002 ND<2.5 35.5 10/21/2002 - ND<2.5 35.5 12/3/2002 ND<2.5 35.5 6/24/2003 ND<2.5 35.5 12/17/2003 ND<2.5 35.5 6/15/2004 ND<2.5 35.5 12/28/2004 ND<2.5 35.5 6/14/2005 ND<2.5 35.5 12/5/2005 ND<2.5 35.5 6/5/2006 ND<2.5 35.5 12/4/2006 ND<2.5 35.5 6/4/2007 ND<2.5 35.5

=

Rank Sum 461.5

=

Rank Mean 35.5

=

Background Rank Sum 461.5 Background Rank Mean 35.5=

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - ND<2.5 35.5 9/24/2002 ND<2.5 35.5 10/21/2002 ND<2.5 35.5 12/3/2002 ND<2.5 35.5 6/24/2003 ND<2.5 35.5 12/17/2003 ND<2.5 35.5 6/15/2004 ND<2.5 35.5 12/28/2004 - ND<2.5 35.5 6/14/2005 ND<2.5 35.5 12/6/2005 - ND<2.5 35.5 6/5/2006 - ND<2.5 35.5 12/4/2006 - ND<2.5 35.5 6/4/2007 - ND<2.5 35.5

=

Rank Sum 461.5

=

Rank Mean 35.5 GWB-6/MW-6 7/30/2002 ND<2.5 35,5 9/24/2002 ND<2.5 35.5 10/21/2002 ND<2.5 35.5 12/3/2002 ND<2.5 35.5 6/24/2003 ND<2.5 35.5 12/17/2003 ND<2.5 35.5 6/15/2004 ND<2.5 35.5 Page 77

12/28/2004 ND<2.5 35.5 6/13/2005 ND<2.5 35.5 12/5/2005 ND<2.5 35.5 6/5/2006 ND<2.5 35.5 12/5/2006 ND<2.5 35.5 6/5/2007 ND<2.5 35.5

=

Rank Sum 461.5 Rank Mean = 35.5 GWC-13/MW-137/30/2002 ND<2.5 35.5 9/24/2002 ND<2.5 35.5 10/21/2002 ND<2.5 35.5 12/3/2002 ND<2.5 35.5 6/24/2003 - ND<2.5 35.5 12/17/2003 - ND<2.5 35.5 6/15/2004 - ND<2.5 35.5 12/28/2004 ND<2.5 35.5 6/13/2005 - ND<2.5 35.5 12/6/2005 4 71 6/5/2006 ND<2.5 35.5 12/4/2006 ND<2.5 35.5 6/4/2007 15 76 Rank Sum = 537.5

=

Rank Mean 41.3462 GWC-14/MW-147/30/2002 ND<2.5 35.5 9/24/2002 - 8 73 10/21/2002 9 74 12/3/2002 10 75 6/24/2003 7 72 12/17/2003 19 77

=

Rank Sum 406.5 Rank Mean = 67.75 GWC-5/MW-5 7/30/2002 ND<2.5 35.5 9/24/2002 ND<2.5 35.5 10/21/2002 ND<2.5 35.5 12/3/2002 ND<2.5 35.5 6/24/2003 ND<2.5 35.5 12/17/2003 ND<2.5 35.5 6/15/2004 ND<2.5 35.5 12/28/2004 ND<2.5 35.5 6/13/2005 ND<2.5 35.5 12/6/2005 ND<2.5 35.5 6/5/2006 ND<2.5 35.5 12/4/2006 ND<2.5 35.5 6/5/2007 ND<2.5 35.5 Rank Sum = 461.5

=

Rank Mean 35.5 GWC-17/MW-176/15/2005 ND<2.5 35.5 12/6/2005 ND<2.5 35.5 6/5/2006 ND<2.5 35.5 12/5/2006 ND<2.5 35.5

=

Rank Sum 142

=

Rank Mean 35.5 Page 78

GWC-18/MW-186/15/2005 ND<2.5 35.5 Rank Sum = 35.5 Rank Mean = 35.5 GWB-16/MW-16112/5/2006 ND<2.5 35.5 Rank Sum = 35.5 Rank Mean = 35.5 Calculation Results:

Kruskal-Wallis H Statistic = 11.4714 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 46.1232 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 11.4714 < 15.5073 indicating no significant group difference at 5% significance level 46.1232 > 15.5073 indicating a significant group difference at 5% significance level when adjusted for ties Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 35.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 35.5 o 20.4136 GWB-6/MW-6 35.5 o 20.4136 GWC-13/MW-1341.3462 5.84615 20.4136 GWC-14/MW-1467.75 32.25 25.6865 GWC-5/MW-5 35.5 o 20.4136 GWC-17/MW-1735.5 o 29.7576 GWC-18/MW-1835.5 o 54.0092 GWB-16/MW-16G5.5 o 54.0092 Individual Well Comparisons at Groupwise 5% Significance Level (0.625% Significance Level per comparison) 0.625% Z score is 2.51213 Mean background rank is 35.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 35.5 o 22.0439 GWB-6/MW-6 35.5 o 22.0439 GWC-13/MW-1341.3462 5.84615 22.0439 GWC-14/MW-1467.75 32.25 27.7379 GWC-5/MW-5 35.5 o 22.0439 GWC-17/MW-1735.5 o 32.1342 GWC-18/MW-1835.5 o 58.3226 GWB-16/MW-16135.5 o 58.3226 Page 79

Concentrations (lJg/L)

Parameter: cis-1,2-Dichloroethene Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 62 Percent Non-Detects: 80.5195%

Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/4/2007 ND<2.5 ND<5 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 13 (100%) 7/30/2002 - ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005 - ND<2.5 ND<5 6/5/2006 - ND<2.5 ND<5 12/4/2006 - ND<2.5 ND<5 6/4/2007 - ND<2.5 ND<5 GWB-6/MW-6 13 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 Page 80

6/5/2007 ND<2.5 ND<5

_ ~ _ , __ ,."__ ' ' ' ~ " " W _ ~ _ ~ ' ___ _

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GWC-13/MW-1313 4 (30.7692%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 - 6 6 12/17/2003 - 14 14 6/15/2004 - 9.5 9.5 12/28/2004 8 8 6/13/2005 - 8 8 12/6/2005 9 9 6/5/2006 8 8 12/4/2006 10 10 6/4/2007 16 16 GWC-14/MW-146 0(0%) 7/30/2002 10 10 9/24/2002 - 18.5 18.5 10/21/2002 16 16 12/3/2002 19 19 6/24/2003 10 10 12/17/2003 17 17 GWC-5/MW-5 13 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 GWC-17/MW-174 4 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 GWB-16/MW-16It 1 (100%) 12/5/2006 ND<2.5 ND<5 There are 2 unused wells

.'-",-""-"-_._....._.*._._.*.*. _.,.-,~. _ ........ ....

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Well Samples NO Date Result Original EO-Blank 9 9 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/6/2006 ND<2.5 ND<5 Page 81

12/5/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 Trip Blank 4 4 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 Page 82

Shapiro-Francia Test of Normality Parameter: cis-1,2-Dichloroethene All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL

=

Total Sample Size 77 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 2.5 -2.25713 5.09463 -5.64282 2 2.5 -1.95996 8.93608 -10.5427 3 2.5 -1.77438 12.0845 -14.9787 4 2.5 -1.63524 14.7585 -19.0668 5 2.5 -1.52203 17.0751 -22.8718 6 2.5 -1.4325 19.1272 -26.4531 7 2.5 -1.34694 20.9414 -29.8205 8 2.5 -1.27024 22.5549 -32.996 9 2.5 -1.20036 23.9958 -35.9969 10 2.5 -1.1359 25.286 -38.8367 11 2.5 -1.07584 26.4434 -41.5263 12 2.5 -1.02365 27.4913 -44.0854 13 2.5 -0.970094 28.4324 -46.5106 14 2.5 -0.919183 29.2773 -48.8086 15 2.5 -0.87055 30.0351 -50.985 16 2.5 -0.823893 30.7139 -53.0447 17 2.5 -0.782366 31.326 -55.0006 18 2.5 -0.738846 31.8719 -56.8477 19 2.5 -0.696684 32.3573 -58.5894 20 2.5 -0.655726 32.7873 -60.2288 21 2.5 -0.615839 33.1665 -61.7684 22 2.5 -0.576911 33.4994 -63.2106 23 2.5 -0.541736 33.7928 -64.565 24 2.5 -0.504372 34.0472 -65.8259 25 2.5 -0.467699 34.266 -66.9952 26 2.5 -0.431644 34.4523 -68.0743 27 2.5 -0.396142 34.6092 -69.0646 28 2.5 -0.363809 34.7416 -69.9741 29 2.5 -0.329206 34.85 -70.7972 30 2.5 -0.294992 34.937 -71.5346 31 2.5 -0.26112 35.0052 -72.1874 32 2.5 -0.227545 35.0569 -72.7563 33 2.5 -0.194225 35.0947 -73.2419 34 2.5 -0.163659 35.1214 -73.651 35 2.5 -0.130716 35.1385 -73.9778 36 2.5 -0.0979139 35.1481 -74.2226 37 2.5 -0.0652187 35.1524 -74.3856 38 2.5 -0.0325917 35.1534 -74.4671 39 2.5 o 35.1534 -74.4671 40 2.5 0.0325917 35.1545 -74.3856 41 2.5 0.0652187 35.1587 -74.2226 42 2.5 0.0979139 35.1683 -73.9778 43 2.5 0.130716 35.1854 -73.651 44 2.5 0.163659 35.2122 -73.2419 45 2.5 0.194225 35.2499 -72.7563 46 2.5 0.227545 35.3017 -72.1874 Page 83

47 2.5 0.26112 35.3699 -71.5346 48 2.5 0.294992 35.4569 -70.7972 49 2.5 0.329206 35.5653 -69.9741 50 2.5 0.363809 35.6976 -69.0646 51 2.5 0.396142 35.8546 -68.0743 52 2.5 0.431644 36.0409 -66.9952 53 2.5 0.467699 36.2596 -65.8259 54 2.5 0.504372 36.514 -64.565 55 2.5 0.541736 36.8075 -63.2106 56 2.5 0.576911 37.1403 -61.7684 57 2.5 0.615839 37.5196 -60.2288 58 2.5 0.655726 37.9496 -58.5894 59 2.5 0.696684 38.4349 -56.8477 60 2.5 0.738846 38.9808 -55.0006 61 2.5 0.782366 39.5929 -53.0447 62 2.5 0.823893 40.2717 -50.985 63 6 0.87055 41.0296 -45.7617 64 8 0.919183 41.8745 . -38.4082 65 8 0.970094 42.8156 -30.6475 66 8 1.02365 43.8634 -22.4582 67 9 1.07584 45.0208 -12.7757 68 9.5 1.1359 46.3111 -1.9847 69 10 1.20036 47.752 10.0189 70 10 1.27024 49.3655 22.7213 71 10 1.34694 51.1797 36.1907 72 14 1.4325 53.2318 56.2457 73 16 1.52203 55.5484 80.5983 74 16 1.63524 58.2224 106.762 75 17 1.77438 61.3708 136.926 76 18.5 1.95996 65.2122 173.186 Sample Standard Deviation = 4.19621 Numerator = 29993.3

Denominator 87268.4 76 65.2122 W Statistic = 0.34369 5% Critical value of 0.969 exceeds 0.34369 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.34369 Evidence of non-normality at 99% level of significance Page 84

" Kruskal-Wallis Non-Parametric Test Parameter: cis-1,2-Dichloroethene Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-15 7/30/2002 ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002 - ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003 ND<2.5 31.5 12/17/2003 ND<2.5 31.5 6/15/2004 ND<2.5 31.5 12/28/2004 ND<2.5 31.5 6/14/2005 ND<2.5 31.5 12/5/2005 ND<2.5 31.5 6/5/2006 ND<2.5 31.5 12/4/2006 ND<2.5 31.5 6/4/2007 ND<2.5 31.5

=

Rank Sum 409.5

=

Rank Mean 31.5

=

Background Rank Sum 409.5 Background Rank Mean 31.5=

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002 ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003 ND<2.5 31.5 12/17/2003 ND<2.5 31.5 6/15/2004 ND<2.5 31.5 12/28/2004 - ND<2.5 31.5 6/14/2005 ND<2.5 31.5 12/6/2005 - ND<2.5 31.5 6/5/2006 - ND<2.5 31.5 12/4/2006 - ND<2.5 31.5 6/4/2007 - ND<2.5 31.5

=

Rank Sum 409.5

=

Rank Mean 31.5 GWB-6/MW-6 7/30/2002 ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002 ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003 ND<2.5 31.5 12/17/2003 ND<2.5 31.5 6/15/2004 ND<2.5 31.5 Page 85

12/28/2004 ND<2.5 31.5 6/13/2005 ND<2.5 31.5 12/5/2005 ND<2.5 31.5 6/5/2006 ND<2.5 31.5 12/5/2006 ND<2.5 31.5 6/5/2007 ND<2.5 31.5 Rank Sum 409.5 =

Rank Mean 31.5 =

GWC-13/MW-137/30/2002 ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002 ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003 - 6 63 12/17/2003 - 14 72 6/15/2004 - 9.5 68 12/28/2004 8 64 6/13/2005 - 8 65 12/6/2005 9 67 6/5/2006 8 66 12/4/2006 10 69 6/4/2007 16 73 Rank Sum 733 =

Rank Mean 56.3846 =

GWC-14/MW-147/30/2002 10 70 9/24/2002 - 18.5 76 10/21/2002 16 74 12/3/2002 19 77 6/24/2003 10 71 12/17/2003 17 75 Rank Sum 443 =

Rank Mean 73.8333 =

GWC-5/MW-5 7/30/2002 ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002 ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003 ND<2.5 31.5 12/17/2003 ND<2.5 31.5 6/15/2004 ND<2.5 31.5 12/28/2004 ND<2.5 31.5 6/13/2005 ND<2.5 31.5 12/6/2005 ND<2.5 31.5 6/5/2006 ND<2.5 31.5 12/4/2006 ND<2.5 31.5 6/5/2007 ND<2.5 31.5 Rank Sum 409.5 =

Rank Mean 31.5 =

GWC-17/MW-176/15/2005 ND<2.5 31.5 12/6/2005 ND<2.5 31.5 6/5/2006 ND<2.5 31.5 12/5/2006 ND<2.5 31.5 Rank Sum 126 =

Rank Mean 31.5 =

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Page 86

GWC-18/MW-186/15/2005 ND<2.5 31.5 Rank Sum = 31.5 Rank Mean = 31.5 GWB-16/MW-16112/5/2006 ND<2.5 31.5 Rank Sum = 31.5 Rank Mean = 31.5 Calculation Results:

Kruskal-Wallis H Statistic = 28.9143 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 60.489 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 28.9143> 15.5073 indicating a significant group difference at 5% significance level 60.489> 15.5073 indicating a significant group difference at 5% significance level when adjusted for ties Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 31.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 31.5 o 20.4136 GWB-6/MW-6 31.5 o 20.4136 GWC-13/MW-1356.3846 24.8846 20.4136 GWC-14/MW-1473.8333 42.3333 25.6865 GWC-5/MW-5 31.5 o 20.4136 GWC-17/MW-1731.5 o 29.7576 GWC-18/MW-1831.5 o 54.0092 GWB-16/MW-16131.5 o 54.0092 Individual Well Comparisons at Groupwise 5% Significance Level (0.625% Significance Level per comparison) 0.625% Z score is 2.51213 Mean background rank is 31.5 Well Mean Rank Dif from Bkg Critical Value GWA*7/MW*7 31.5 o 22.0439 GWB-6/MW-6 31.5 o 22.0439 GWC-13/MW-1356.3846 24.8846 22.0439 GWC-14/MW-1473.8333 42.3333 27.7379 GWC-5/MW-5 31.5 o 22.0439 GWC-17/MW-1731.5 o 32.1342 GWC-18/MW-1831.5 o 58.3226 GWB-16/MW-161.31.5 o 58.3226 Page 87

Concentrations (J,lg/L)

Parameter: Trichlorofluoromethane Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect: 46 Percent Non-Detects: 59.7403%

Total Background Samples: 13 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1513 13(100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/4/2007 ND<2.5 ND<5 There are 8 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 13 0(0%) 7/30/2002 - 184.5 184.5 9/24/2002 32 32 10/21/2002 221 221 12/3/2002 210 210 6/24/2003 23 23 12/17/2003 34 34 6/15/2004 46 46 12/28/2004 - 144 144 6/14/2005 22 22 12/6/2005 - 86.5 86.5 6/5/2006 - 80 80 12/4/2006 - 155.5 155.5 6/4/2007 - 112 112 GWB-6/MW-6 13 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 Page 88

6/5/2007 ND<2.5 ND<5 GWC-13/MW-1313 0(0%) 7/30/2002 300 300 9/24/2002 381 381 10/21/2002 348 348 12/3/2002 391 391 6/24/2003 - 44 44 12/17/2003 - 99.5 99.5 6/15/2004 - 127 127 12/28/2004 81 81 6/13/2005 - 45.3333 45.3333 12/6/2005 60 60 6/5/2006 92 92 12/4/2006 104 104 6/4/2007 98 98 GWC-14/MW-146 1 (16.6667%) 7/30/2002 43 43 9/24/2002 - 47.5 47.5 10/21/2002 31 31 12/3/2002 27 27 6/24/2003 5 5 12/17/2003 ND<2.5 ND<5 GWC-5/MW-5 13 13 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 GWC-17/MW-174 4 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 GWB-16/MW-16It 1 (100%) 12/5/2006 ND<2.5 ND<5 There are 2 unused wells Well Samples ND Date Result Original EO-Blank 9 9 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/6/2006 ND<2.5 ND<5 Page 89

12/5/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 Trip Blank 4 4 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 Page 90

Shapiro-Francia Test of Normality Parameter: Trichlorofluoromethane All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size = 77 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 2.5 -2.25713 5.09463 -5.64282 2 2.5 -1.95996 8.93608 -10.5427 3 2.5 -1.77438 12.0845 -14.9787 4 2.5 -1.63524 14.7585 -19.0668 5 2.5 -1.52203 17.0751 -22.8718 6 2.5 -1.4325 19.1272 -26.4531 7 2.5 -1.34694 20.9414 -29.8205 8 2.5 -1.27024 22.5549 -32.996 9 2.5 -1.20036 23.9958 -35.9969 10 2.5 -1.1359 25.286 -38.8367 11 2.5 -1.07584 26.4434 -41.5263 12 2.5 -1.02365 27.4913 -44.0854 13 2.5 -0.970094 28.4324 -46.5106 14 2.5 -0.919183 29.2773 -48.8086 15 2.5 -0.87055 30.0351 -50.985 16 2.5 -0.823893 30.7139 -53.0447 17 2.5 -0.782366 31.326 -55.0006 18 2.5 -0.738846 31.8719 -56.8477 19 2.5 -0.696684 32.3573 -58.5894 20 2.5 -0.655726 32.7873 -60.2288 21 2.5 -0.615839 33.1665 -61.7684 22 2.5 -0.576911 33.4994 -63.2106 23 2.5 -0.541736 33.7928 -64.565 24 2.5 -0.504372 34.0472 -65.8259 25 2.5 -0.467699 34.266 -66.9952 26 2.5 -0.431644 34.4523 -68.0743 27 2.5 -0.396142 34.6092 -69.0646 28 2.5 -0.363809 34.7416 -69.9741 29 2.5 -0.329206 34.85 -70.7972 30 2.5 -0.294992 34.937 -71.5346 31 2.5 -0.26112 35.0052 -72.1874 32 2.5 -0.227545 35.0569 -72.7563 33 2.5 -0.194225 35.0947 -73.2419 34 2.5 -0.163659 35.1214 -73.651 35 2.5 -0.130716 35.1385 -73.9778 36 2.5 -0.0979139 35.1481 -74.2226 37 2.5 -0.0652187 35.1524 -74.3856 38 2.5 -0.0325917 35.1534 -74.4671 39 2.5 o 35.1534 -74.4671 40 2.5 0.0325917 35.1545 -74.3856 41 2.5 0.0652187 35.1587 -74.2226 42 2.5 0.0979139 35.1683 -73.9778 43 2.5 0.130716 35.1854 -73.651 44 2.5 0.163659 35.2122 -73.2419 45 2.5 0.194225 35.2499 -72.7563 46 2.5 0.227545 35.3017 -72.1874 Page 91

47 5 0.26112 35.3699 -70.8818 48 22 0.294992 35.4569 -64.392 49 23 0.329206 35.5653 -56.8203 50 27 0.363809 35.6976 -46.9974 51 31 0.396142 35.8546 -34.717 52 32 0.431644 36.0409 -20.9044 53 34 0.467699 36.2596 -5.00266 54 43 0.504372 36.514 16.6853 55 44 0.541736 36.8075 40.5217 56 45.3333 0.576911 37.1403 66.675 57 46 0.615839 37.5196 95.0036 58 47.5 0.655726 37.9496 126.151 59 60 0.696684 38.4349 167.952 60 80 0.738846 38.9808 227.059 61 81 0.782366 39.5929 290.431 62 86.5 0.823893 40.2717 361.698 63 92 0.87055 41.0296 441.788 64 98 0.919183 41.8745 531.868 65 99.5 0.970094 42.8156 628.393 66 104 1.02365 43.8634 734.852 67 112 1.07584 45.0208 855.346 68 127 1.1359 46.3111 999.605 69 144 1.20036 47.752 1172.46 70 155.5 1.27024 49.3655 1369.98 71 184.5 1.34694 51.1797 1618.49 72 210 1.4325 53.2318 1919.31 73 221 1.52203 55.5484 2255.68 74 300 1.63524 58.2224 2746.25 75 348 1.77438 61.3708 3363.74 76 381 1.95996 65.2122 4110.48 Sample Standard Deviation = 88.9575 Numerator = 1.68961 e+007 Denominator = 3.922e+007 = 76 65.2122 W Statistic = 0.430802 5% Critical value of 0.969 exceeds 0.430802 Evidence of non-normality at 95% level of significance 1% Critical value of 0.957 exceeds 0.430802 Evidence of non-normality at 99% level of significance Page 92

Kruskal-Wallis Non-Parametric Test Parameter: Trichlorofluoromethane Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-15 7/30/2002 ND<2.5 23.5 9/24/2002 ND<2.5 23.5 10/21/2002 - ND<2.5 23.5 12/3/2002 ND<2.5 23.5 6/24/2003 ND<2.5 23.5 12/17/2003 ND<2.5 23.5 6/15/2004 ND<2.5 23.5 12/28/2004 ND<2.5 23.5 6/14/2005 ND<2.5 23.5 12/5/2005 ND<2.5 23.5 6/5/2006 ND<2.5 23.5 12/4/2006 ND<2.5 23.5 6/4/2007 ND<2.5 23.5 Rank Sum = 305.5 Rank Mean =23.5 Background Rank Sum = 305.5 Background Rank Mean =23.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - 184.5 71 9/24/2002 32 52 10/21/2002 221 73 12/3/2002 210 72 6/24/2003 23 49 12/17/2003 34 53 6/15/2004 46 57 12/28/2004 - 144 69 6/14/2005 22 48 12/6/2005 - 86.5 62 6/5/2006 - 80 60 12/4/2006 - 155.5 70 6/4/2007 - 112 67 Rank Sum = 803 Rank Mean = 61.7692 GWB-6/MW-6 7/30/2002 ND<2.5 23.5 9/24/2002 ND<2.5 23.5 10/21/2002 ND<2.5 23.5 12/3/2002 ND<2.5 23.5 6/24/2003 ND<2.5 23.5 12/17/2003 ND<2.5 23.5 6/15/2004 ND<2.5 23.5 Page 93

12/28/2004 ND<2.5 23.5 6/13/2005 ND<2.5 23.5 12/5/2005 ND<2.5 23.5 6/5/2006 ND<2.5 23.5 12/5/2006 ND<2.5 23.5 6/5/2007 ND<2.5 23.5

=

Rank Sum 305.5

=

Rank Mean 23.5 GWC-13/MW-137/30/2002 300 74 9/24/2002 381 76 10/21/2002 348 75 12/3/2002 391 77 6/24/2003 - 44 55 12/17/2003 - 99.5 65 6/15/2004 - 127 68 12/28/2004 81 61 6/13/2005 - 45.3333 56 12/6/2005 60 59 6/5/2006 92 63 12/4/2006 104 66 6/4/2007 98 64

=

Rank Sum 859

=

Rank Mean 66.0769 GWC-14/MW-147/30/2002 43 54 9/24/2002 - 47.5 58 10/21/2002 31 51 12/3/2002 27 50 6/24/2003 5 47 12/17/2003 ND<2.5 23.5

=

Rank Sum 283.5

=

Rank Mean 47.25 GWC-5/MW-5 7/30/2002 ND<2.5 23.5 9/24/2002 ND<2.5 23.5 10/21/2002 ND<2.5 23.5 12/3/2002 ND<2.5 23.5 6/24/2003 ND<2.5 23.5 12/17/2003 ND<2.5 23.5 6/15/2004 ND<2.5 23.5 12/28/2004 ND<2.5 23.5 6/13/2005 ND<2.5 23.5 12/6/2005 ND<2.5 23.5 6/5/2006 ND<2.5 23.5 12/4/2006 ND<2.5 23.5 6/5/2007 ND<2.5 23.5

=

Rank Sum 305.5

=

Rank Mean 23.5 GWC-17/MW-176/15/2005 ND<2.5 23.5 12/6/2005 ND<2.5 23.5 6/5/2006 ND<2.5 23.5 12/5/2006 ND<2.5 23.5

=

Rank Sum 94

=

Rank Mean 23.5 Page 94

GWC-18/MW-186/15/2005 ND<2.5 23.5

=

Rank Sum 23.5

=

Rank Mean 23.5 GWB-16/MW-16112/5/2006 ND<2.5 23.5

=

Rank Sum 23.5

=

Rank Mean 23.5 Calculation Results:

Kruskal-Wallis H Statistic = 54.9259

=

Kruskal-Wallis H Statistic (adjusted for tied non-detects) 69.804 95% Confidence comparison value is 15.5073 at 8 degrees of freedom 54.9259> 15.5073 indicating a significant group difference at 5% significance level 69.804 > 15.5073 indicating a significant group difference at 5% significance level when adjusted for ties Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 23.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 61.7692 38.2692 20.4136 GWB-6/MW-6 23.5 o 20.4136 GWC-13/MW-1366.0769 42.5769 20.4136 GWC-14/MW-1447.25 23.75 25.6865 GWC-5/MW-5 23.5 o 20.4136 GWC-17/MW-1723.5 o 29.7576 GWC-18/MW-1823.5 o 54.0092 GWB-16/MW-16123.5 o 54.0092 Individual Well Comparisons at Groupwise 5% Significance Level (0.625% Significance Level per comparison) 0.625% Z score is 2.51213 Mean background rank is 23.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 61.7692 38.2692 22.0439 GWB-6/MW-6 23.5 o 22.0439 GWC-13/MW-1366.0769 42.5769 22.0439 GWC-14/MW-1447.25 23.75 27.7379 GWC-5/MW-5 23.5 o 22.0439 GWC-17/MW-1723.5 o 32.1342 GWC-18/MW-1823.5 o 58.3226 GWB-16/MW-16123.5 o 58.3226 Page 95