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Groundwater Monitoring Report - Plant Vogtle Landfills #2 and #3, Solid Waste Permit Nos. 017-006D(L)(I) and 017-007D(L)(I), Burke County, Georgia, September 2005
	ML073300622
Person / Time
Site:	Vogtle
Issue date:	09/19/2005
From:	Godfrey J; Southern Nuclear Operating Co
To:	Cown J; Office of Nuclear Reactor Regulation, State of GA, Environmental Protection Div
References
	017-006D(L)(I), 017-007D(L)(I), EV-05-1677
	Download: ML073300622 (200)
	v • d • e

{{#Wiki_filter:Southern Nuclear Operating Company, Inc. Post Office Box 1295 Birmingham, Alabama 35201-1295 Tel 205.992.5000 SOUTHERN COMPANY A Energy to Serve Your World'" File: E.03.40C Log: EV-05-1677 September 19, 2005 FEDERAL EXPRESS Voqtle Electric Generating Plant Landfill #2 and #3 Solid Waste Permit No. 017-006D(L)(I) Solid Waste Permit No. 017-007D(L)(I) Mr. Pete Cown Unit Coordinator - Industrial Solid Waste Unit Georgia Environmental Protection Division 4244 International Parkway, Suite 104 Atlanta, GA 30354

Dear Mr. Cown:

Pursuant to EPD Solid Waste Rule 391-3-4-.14 and in accordance with the approved Plant Vogtle Landtill #2 and #3 Groundwater Monitoring Plans, Southern Nuclear is submitting the attached semi-annual groundwater monitoring report which was prepared for Southern Nuclear by the Dextra Group. This report presents the results for analysis of groundwater samples taken in June 2005. Samples from all monitoring wells at Landfill #2 and Landfill #3 (with the exception of GWC-14) were analyzed for Chapter 391-3-4 Appendix I parameters. In addition, as a component of the assessment monitoring program for Landfill #3, samples from wells GWC-13, GWC-14 and GWA-15 were analyzed for Chapter 391-3-4 Appendix II parameters. Due to the detection of the Appendix II parameter mercury in previous sampling events, all monitoring wells at Landfill #3 were analyzed for mercury. As discussed in Sections 5 and 6 of the attached report, there was no statistically significant increase over background for any parameter detected in the compliance wells at Landfill #2. At Landfill #3 there was a statistically significant increase (SSI) over background for barium, 1,1-dichloroethane and trichlorofluoromethane in GWC-13; trichlorofluoromethane in well GWA*7; and barium, 1, 1-dichloroethane and cis-1 ,2-dichloroethene in well GWC-14. Mercury was not detected in any sampling wells during this sampling event; however, statistical analysis for mercury was performed because four complete data sets for mercury analysis have now been completed. There was not sufficient water to collect samples from GWC-14 in June 2005; however, the statistical procedure triggered 881s for this well based on prior detections of barium, 1,1-dichloroethane and cis-1 ,2-dichloroethene. Carbon disulfide was detected in the newly installed well GWC-17; although there is no MCL for this parameter.

EV-05-1677 Page 2 Georgia Environmental Protection Division Mr. Pete Cown Vogtle's Landfill #3 is currently the subject of a contamination assessment under a work plan approved by EPD on April 19, 2005. The results of this assessment will be submitted to EPD in a separate report. A copy of this letter and the attached report will be placed in the operating record within 14 days to serve as the notice to the operating record in accordance with EPD Rules. If you have any questions regarding this matter, please contact Mickey Perry at (205) 992-6994. Sincere!r' >1@e~::z.

          ,(1 J. M. Godfrey          /

Manager - Environmental A 7

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irs

JMG/MEP:ahl cc: Mr. Michael Kemp (w/o) Mr. Earl Hinkle (w/o) Mr. Kurt Batsel (w/o) Attachment

EV-05-1677 Page 3 Georgia Environmental Protection Division Mr. Pete Gown bc: T. E. Tynan (w/o) P. D. Rushton (w/o) N. J. Stringfellow (w/o) N. D. Dennis (w/o) G. L. Buck (w/o) D. G. Goodwin (w/o) (Return Receipt) SNG Document Management - Vogtle (Return Receipt)

September 6, 2005 Dextra Mr. Mike Godfrey Southern Nuclear Operating Company, Inc. 40 Inverness Center Parkway p.G. Box 1295 Birmingham, Alabama 35201-1295

Subject:

Georgia Power Plant Vogtle Private Landfills #2 and #3 Permit Numbers 017-006D(L)(I) and 017-007D(L)(I) Burke County, Georgia Groundwater Monitoring Report - June 2005

Dear Mr. Godfrey:

Please find 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 detection monitoring and Appendix II sampling conducted at the landfills in June 2005. If you have any questions, please contact me at 770-578-9696. We appreciate the opportunity to assist SNC with this project. jJlg;;c Very truly yours, Kurt R. Batsel, PE Principal Cc: Mr. Don Goodwin, Plant Vogtle The Dextra Group, Inc. Environmental BuJinus Somtions 4665 Lower Roswell Road, #154 (770) 578-9696 Phone Marietta, GA 30068 (770) 321-5345 Fax

GROUNDWATER MONITORING REPORT PLANT VOGTLE LANDFILLS #2 AND #3 SOLID WASTE PERMIT Nos. 017-006D(L)(I) AND 017-007D(L)(I) BURKE COUNTY, GEORGIA SEPTEMBER 2005 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, LLC 4665 Lower Roswell Road, #154 Dextra Marietta, Georgia 30068

,- 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 4 4.1 Procedures and Field Measurements 4.2 Parameter Analyses 5 - Groundwater Quality Evaluation 5 5.1 Detected Parameters 5.2 Statistical Analyses 5.2.1 Landfill #2 5.2.2 Landfill #3 6 - Conclusions 7 In Order Following Page 7 Tables 1 - Groundwater Elevations and Monitoring Well Construction Details, Landfill #2 2 - Groundwater Elevations and Monitoring Well Construction Details, Landfill #3 3 - Groundwater Sampling Field Measurements, Landfill #2 4 - Groundwater Sampling Field Measurements, Landfill #3 5 - Constituents for Detection Monitoring 6 - Summary of Detected Parameters, Landfill #2 7 - Summary of Detected Parameters, Landfill #3 Figures 1 - Groundwater Contour Elevation Map Landfill #2,]une 13, 2005 2 - Groundwater Contour Elevation Map Landfill #3,]une 13,2005 Appendices A - Hydraulic Gradient Calculation Sheets B - Laboratory Analytical Reports C - Statistical Analyses

 , Introduction This report presents the results of groundwater sampling conducted in June 2005 at two private solid waste landfills (Landfill #2 and 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 landfills. The landfills are operated under Solid Waste Permit #s 017-006D(L)(I) and 017-007D(L)(I) and are 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. The active trench at Landfill #2 is used only for asbestos disposal. 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 landfills. The findings of the initial four sampling events, conducted from 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 2005 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 r The groundwater monitoring well network consists of four permanent monitoring wells located along the north, east and south waste unit management boundaries of Landfill #2 (Figure 1), and nine permanent monitoring wells located along the perimeter of the waste management unit boundary of Landfill #3 (Figure 2). As shown in the figures, 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 landfills, which occur from approximately 35 to 60 feet below land surface at Landfill #2 and from approximately 30 to 80 feet below land surface at Landfill #3. The four permanent groundwater monitoring wells at Landfill #2 were installed in September 2001 after advancing a total of eight deep soil borings around the landfill boundary. The upgradient well is GWA-2/MW-2 and the downgradient, or compliance, wells are GWC-3/MW-3, GWB-4/MW-4 and GWC-11/MW-11. The well construction details are presented in Table 1. The wells will be referred to as GWA-2, GWC-3, GWB-4 and GWC-11 in this report consistent with the EPD's well identification guidelines. 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 2. As noted in the table, well GWC-16 has been dry during each groundwater monitoring event. 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 corner 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 /1-rW- 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 stormwater sediment ponds were completed in 2004 in accordance with the approved Design and Operational Plan for the Vogde Landfill #3. As there was no discharge from either pond at the time of the June 2005 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 Vogde site consists of sedimentary deposits within the Coastal Plain physiographic province of Georgia. These sediments consist of unconsolidated sands, silts and clays comprised of marine and non-marine fluvial deposits. Marls and limestone were also encountered at depth in deep borings completed at the landfills. A boring completed to approximately 126 feet below land surface at the northwest boundary of Landfill #2 appears to have been completed just into or immediately on top of the Udey Limestone member. 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 landfills. Underlying the Barnwell Group is the Lisbon Formation with its uppermost unit, the Blue Bluff Marl, located immediately under the Udey Limestone. This marl layer, approximately 70 feet thick, is a near-impermeable layer that effectively confines the Tertiary and Cretaceous aquifers, the two confmed aquifers beneath the Plant site. The occurrence of groundwater underlying the landfills appears in confmed, semi-confmed, unconfined, and perched hydrogeologic units. Groundwater is found primarily in sands, silty sands, clayey 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 sandiclay ratio and the characteristics of the marl/limestone interface. Groundwater may also exist in an unconfmed 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 the location of expected groundwater-producing zones. At both landfills, groundwater was generally found in water producing zones less than one foot thick and was observed to be under semi-confined or confined conditions. 2

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. Landfill #2 Depth to water measurements and groundwater elevations for the wells at Landfill 2 are presented in Table 1. Groundwater elevations measured during the sampling events to date indicate groundwater underneath Landfill 2 trends from a relatively higher elevation at the eastern/northeastern portion of the landfill (GWA-2) to relatively lower elevations to the west/ southwest beneath the landfill (Figure 1). Well GWC-11 is not used to construct the potentiometric surface map because the uppermost water-bearing unit at this location appears to be within a different hydrologic zone based on the significantly lower groundwater elevation measured in well GWC-11 compared to wells GWA-2, GWC-3 and GWB-4. The hydraulic gradient of 0.015 (shown on Figure 1 for June 2005) was calculated using a three-point problem from potentiometric surface elevations in monitoring wells GWA-2, GWC-3 and GWB-4. The calculations used in determining the gradient are provided in Appendix A. The hydraulic gradient has ranged from a minimum of 0.01 (October 2002 and December 2004) to a maximum of 0.08 Oune 2003).

 - Landfill #3 Depth to water measurements and groundwater elevations for the wells at Landfill #3 are presented in Table 2. 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 the northeast and to the west-southwest beneath the landfill. This mounding effect is believed to be the result of natural infiltration in the sandy soils within the historic topographically high area in the center of the landfill. This topographically high area, which encompasses a broad area within the landfill, is a natural site feature that was present prior to any landfilling operations. Figure 2 shows the topography of the landfill. The topographically high area is now centered in the north middle portion of the landfill near well GWB-6.

As discussed previously, the water-bearing stratigraphy beneath Landfill #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 13,2005. 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. I

 - 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:

3

Southwest: GWB-6, GWA-7 and GWA-15; Northeast: GWC-13, 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 2). The calculations used in determining the gradients are provided in Appendix A. For the June 2005 event, the southwest gradient was 0.004, the northeast gradient was 0.08, and the southeast gradient was 0.12. The southwest gradient has typically been 0.01, with a maximum of 0.02 Qune 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 Qune 2003). The southeast gradient has ranged from a low of 0.06 (December 2002) to a maximum of 0.16 Qune 2003). For this monitoring event, the steepest gradient was observed in the southeast 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 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. All field instruments were calibrated ill the field daily prior to use and at the conclusion of each sampling event. The field measurements are provided in Tables 3 and 4. After each sample was collected, the SamplePro pumps and airlines 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 airline was placed in a clean plastic bag between use at each well.

4.2 ParameterAnalYses I 4

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. Full Appendix II analysis was performed for wells GWC-13 and GWA-15 during the June 2005 event, and was scheduled for well GWC-14 but could not be performed as this well was dry. In addition, well GWA-7 was also sampled for the Appendix II parameter groups base neutral/acid extractables, cyanide and sulfide as these were inadvertently omitted from the GWA-7 sample analysis in December 2004. This was communicated to Mr. Earl Hinkle of EPD in February 2005 and it was agreed that these additional parameters would be collected during the June 2005 sampling event at the site. 5 - Groundwater Quality Evaluation 5.1 Detected Parameters 1

 - Tables 6 and 7 present a summary of all analyzed parameters detected above the laboratory method reporting limits.

Landfill #2 At Landfill #2, barium was detected at 0.021 milligrams per liter (mg/l) in well GWA-2, 0.042 mg/l in GWB-4 and 0.034 mg/l in GWC-11. The maximum contaminant level (MCL) for barium is 2.0 rng/I. Zinc was detected at 0.029 mg/l in well GWB-4 and 0.034 in GWC-11. No organic parameters were detected during this monitoring event. No parameters were detected in any of the field or laboratory QA/QC samples, and the laboratory QA/QC checks were within acceptable limits. Landfill #3 At Landfill #3, barium was detected at concentrations below the MCL in well GWC-13 (0.028 mg/D. Zinc was detected in well GCW-13 at 0.020 mg/l and in well GWA-15 at 0.029 mg/l; there is no MCL for zinc. In the sample from compliance well GWC-13, volatile organic compounds (VOCs) 1,1-dichloroethane, cis-1,2-dicWoroethene and trichlorofluoromethane were detected at low levels, below MCLs where applicable. Carbon disulfide was also detected in newly installed well GWC-17; there is no MCL for carbon disulfide. There was insufficient water to collect samples from well GWC-14. No Appendix II parameters were detected. No parameters were detected in any of the field or laboratory QA/QC samples, and the laboratory ,- QA/QC checks were within acceptable limits. 5

,- 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 at both landfills, the Kruskal-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. 5.2.1 LandJill#2 At Landfill #2, statistical analysis was performed for the two detected parameters barium and zinc. The analyses do not indicate statistically significant higher concentrations for these parameters in the compliance well samples compared to the concentrations in the background well sample. 5.2.2 Lanqfill #3 At Landfill #3, statistical analysis was performed for the six detected parameters barium, zinc, 1,1-dichloroethane, carbon disulfide, cis-1,2-dichloroethene, and trichlorofluoromethane. Although mercury was not detected in any wells during this event, statistical analysis was also performed for mercury at Landfill #3 because mercury was previously detected at Landfill #3 and the June 2005 event reflected the first time that 4 full sample result sets were available to perform the statistical analysis. In the future, statistical analysis for mercury will only be conducted if this parameter is detected during the monitoring event. Compared to background well GWA-15/MW-15, the analyses indicate statistically significant higher concentrations of the following parameters:

Barium, 1,1-dichloroethane and trichlorofluoromethane in the GWC-13 well samples,
Trichlorofluoromethane in the GWA-7 well samples, and
Barium, 1,1-dichloroethane and cis-1,2-dichloroethene in the GWC-14 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 6

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 GWA-7, 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. SNC has now completed three rounds of Appendix II parameter sampling in wells GWC-13, GWC-14 and GWA-15, and found all Appendix II parameters with the exception of mercury to be below the analytical detection limit. Therefore, we will continue to perform analysis for the Appendix II parameter mercury in all wells during the regular semi-annual sampling events. Based on the lack of detection of any other Appendix II parameters in wells GWC-13, GWC-14 and GCW 15, a request was submitted to EPD on April 5, 2005 for approval to reduce the frequency of sampling for the other Appendix II parameters at Landfill #3. However, as Landfill #3 is the subject of a contamination assessment pursuant to a work plan approved by EPD on April 19, 2005, SNC issued a letter on April 5, 2005 withdrawing the Appendix II reduction request pending evaluation of the assessment results. The results of the CA will be submitted in a separate report. 7

TABLES 1 -

) Table 1 Southern Nuclear Operating Company Plant Vogtle Landfill #2 Groundwater Elevations and Monitoring Well Construction Details Total Boring TotalWeU Riser Screened Groundwater Measuring Point Elevation Ground Surface Elevation Depth to Water Depth Depth Height Interval Elevation WelllD Date (feet, msl) (feet, mal) (feet, topvc) (feet, bla) (feet, topvc) (feet) (feet, mal) (feet, mal) GWA*21MW-2 9/26/2001 249.41 246.76 40.02 57 47.70 2.65 201.76 to 211.76 209.39 7/29/2002 41.69 207.72 9/9/2002 41.64 207.77 10/21/2002 42.72 206.69 1213/2002 40.69 208.72 6/24/2003 37.58 211.83 12117/2003 39.98 209.43 6/15/2004 39.59 209.82 12128/2004 43.02 206.39 6/13/2005 39.41 210.00 GWC-3/MW*3 9/2612001 250.41 247.81 50.45 62 52.60 2.60 197.81 to 207.81 199.96 7/29/2002 50.05 200.36 9/912002 50.79 199.62 10/21/2002 49.30 201.11 121312002 50.26 200.15 6124/2003 51.58 198.83 12117/2003 47.89 202.52 6/15/2004 47.44 202.97 1212812004 49.13 201.28 6/1312005 46.77 203.64 GWB-4/MW-4 9126/2001 242.40 239.83 39.84 57 48.57 2.57 193.83 to 203.83 202.56 7/29/2002 40.06 202.34 9/9/2002 41.27 201.13 10/21/2002 40.50 201.90 1214/2002 39.65 202.75 612412003 38.10 204.30 12117/2003 39.53 202.87 6115/2004 39.46 202.94 12128/2004 40.02 202.38 6/1312005 38.96 203.44 GWC-11/MW-11 7/29/2002 227.53 225.09 64.80 65 67.44 2.44 160.09 to 170.09 162.73 9/9/2002 59.99 167.54 10/21/2002 65.27 162.26 1214/2002 65.49 162.04 6/24/2003 59.72 167.81 12117/2003 59.33 168.20 6/15/2004 60.69 166.84 12128/2004 62.71 164.82 6/13/2005 62.96 164.57 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 1 of 1

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Table 2 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 9/26/2001 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 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 12/16/2003 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 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 12/16/2003 30.59 230.74 6/15/2004 30.87 230.46 12/28/2004 32.33 229.00 6/13/2005 30.64 230.69 Page 1 of 3

     )                                                                                                                                              1 Table 2 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 40.48 232.60 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 6/13/2005 38.76 234.32 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 12/3/2002 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 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 12/28/2004 44.68 223.47 6/13/2005 40.1 228.05 Page 2 of 3

        )                                                                                     )                                                                         )

Table 2 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) GWB*16/MW-16 7/29/2002 256.95 254.57 DRY 65 55.38 2.38 201.57 to 211.57 DRY 9/9/2002 DRY DRY 10/21/2002 DRY DRY 12/3/2002 DRY DRY 6/24/2003 DRY DRY 12/16/2003 DRY DRY 6/15/2004 DRY DRY 12/28/2004 DRY DRY 6113/2005 DRY DRY GWC-17/MW-17 6/13/2005 222.64 220.28 72.82 85 82.00 3.00 141.28 to 151.28 149.82 GWC-18/MW-18 6/13/2005 227.54 225.03 77.05 80 79.00 3.00 149.03 to 159.03 150.49 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

) ) Table 3 Southern Nuclear Operating Company Plant Vogtle landfill #2 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'! Turbidityi2 Purged Odor Color Comments GWA-21MW-2 9/2612001 - - - - - - Well development only 7129/2002 4.69 19 13.8 2.5 none none 9/912002 4.51 24.9 7.53 -- none none 10/2112002 5.17 18 1.31 3.1 none none 1213/2002 5.30 13 9.1 3.5 none none 6/24/2003 6.28 26.9 5.76 1.0 none none 1211712003 4.93 22.7 4.5 3.5 none none 6116/2004 6.97 15.32 5.9 1.5 none none 12128/2004 4.80 10.3 9.67 2.0 none none 6114/2005 5.28 17.8 8.65 2.5 none none GWC-3/MW-3 9/2612001 - - - - .- -- Well development only 712912002 4.08 27.9 22.2 1.3 none none 9/9/2002 6.03 36.5 4.08 0.5 none none 1012112002 - 176 35.6 <0.5 gal -- -- Too little water to purge and sample 121312002 5.51 488 14.0 <0.5 gal .- - Too little water to purge and sample 6124/2003 - - - <0.5 gal none none Too little water to purge and sample 1211712003 6.59 22.7 2.79 2.0 none none 6/1612004 4.91 40.8 5.78 1.25 none none 1212812004 - - - -. -. - Too little water to purge and sample 6/14/2005 5.83 29.5 4.25 1.25 none none GWB-4/MW-4 9126/2001 4.73 36.0 15.5 35.0 -- -- Well development only 7/2912002 4.21 269 3.63 2.0 none none 919/2002 4.35 34.8 0.55 2.0 none none 10121/2002 5.01 25 6.44 3.0 none none 1214/2002 5.51 98.7 2.60 4.0 none none 6124/2003 5.33 36.0 5.27 2.0 none none 1211712003 4.62 3.55 0.00 1.5 none none 6/1612004 4.63 33.80 1.40 3.3 none none 12128/2004 4.43 20.70 0.00 2.0 none none 6/1412005 4.66 38.25 2.50 2.5 none none GWC-11/MW-11 7129/2002 5.30 67.5 36.6 4.0 none pale white 919/2002 6.24 97.0 6.51 2.0 none none 10/21/2002 5.05 75.0 8.05 1.8 none none 1214/2002 5.72 57.1 8.10 2.0 none none 6/2412003 6.93 70.0 2.70 2.5 none none 1211712003 7.04 69.2 11.2 4.5 none none 6/16/2004 6.10 58.9 6.1 3.5 none none 1212812004 5.85 30.5 9.3 2.0 none none 611412005 5.98 33.2 8.6 2.5 none none Notes:

  - = no data recorded 11 - Conductivity in units of umhos/sec 12 - Turbidity in units of NTU 1 of 1

                                                           )                                                               }

Table 4 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Sampling Field Measurements Gallons 1 2 WelllD Date pH ConductivitY TurbiditY 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 12116/2003 6.27 210 79.7 3.0 none cloudy Split with GAEPD 6/16/2004 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 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 1213/2002 6.14 116 0.45 1.5 none none 6/24/2003 7.09 155 9.1 1.5 none none 12117/2003 6.82 126 2.27 1.5 none none 6/16/2004 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 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 hours 12116/2003 5.73 62.7 100 4.0 none mod. brown Turbidity 85-100 ntu for 1 hour 6/15/2004 5.94 68.9 42.7 2.0 none none 12128/2004 8.16 109 9.86 3.5 none none 6/14/2005 7.25 275 8.56 3.0 none none 1 of 3

                                                          )                                                                    )

Table 4 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivityl1 Turbidityl2 Purged Odor Color Comments GWC-13/MW-13 7/29/2002 6.52 421 0.66 -- 9/9/2002 5.96 77.5 6.40 1.0 none none 10/21/2002 6.19 73.4 3.09 2.5 none none 12/3/2002 6.54 481 1.00 2.5 none none 6/24/2003 5.95 271 2.02 2.5 none none 12116/2003 5.65 294 0.75 6.0 none none Split with GAEPD 6/16/2004 5.84 366 4.70 1.75 none none 12/28/2004 6.09 268 0.38 1.75 none none 6/13/2005 5.75 255 2.00 1.50 none none GWC-14/MW-14 7/29/2002 6.49 448 1.15 -- none none 9/9/2002 5.57 717 5.19 - none none 10/21/2002 6.00 674 4.65 3.2 none none 1213/2002 5.54 547 2.7 4.5 none none 6/24/2003 5.97 197 3.61 2.5 none none 12117/2003 -- -- - -- - -- Split with GAEPD-VOCs & metals 6/15/2004 -- -- -- -- -- -- Well Dry 12128/2004 -- -- -- -- -- - Too little water to purge and sample 6/14/2005 -- - - -- -- -- Too little water to purge and sample GWA-15/MW-15 7/29/2002 5.70 95.8 1.12 4.0 none none 9/9/2002 5.92 118 8.53 .2.5 none none 10/21/2002 5.19 81 1.88 4.5 none none 12/3/2002 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 none 6/14/2005 7.85 72.0 7.75 4.00 none none 2 of 3

                                                                         )                                                 )

Table 4 Southern Nuclear Operating Company Plant VogUe Landfill #3 Groundwater Sampling Field Measurements Gallons Well 10 Date pH Conductivity'1 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 6115/2004 - -- - -- -- -- Well Dry 12128/2004 - -- -- -- -- -- Well Dry 6/15/2005 - -- - - -- -- Well Dry GWB-17/MW-17 6/15/2005 5.84 77.58 5.29 3.5 none none GWB-18/MW-18 6/15/2005 6.67 85.6 8.2 4.2 none none Notes:

 -- = no data recorded;

/1 - Conductivity in units of umhos/sec /2 - Turbidity in units of NTU 3 of 3

,- Table 5 Southern Nuclear Oper.ating Company Plant Vogtle Landfills #2 and #3 Appendix I to Part 40 CFR Part 258: Constituents for Detection Monitoring (1) Common 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/7520 (11) Selenium . 6010B/7741 (12) Silver . 6010B/7761 (13) Thallium . 6010B/7841 (14) Vanadium . 6010B/7911 (15) Zinc . 6010B/7 951 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) Dibromochloromethane; Chlorodibromomethane . (28) 1,2-Dibromo-3-chloropropane; DBCP . (29) 1,2-Dibromoethane; Ethylene dibromide; EOB . (30) o-Dichlorobenzene; 1,2-0ichlorobenzene . (31) p-Dichlorobenzene; 1,4-0ichlorobenzene , .. , . (32) trans-1,4-0ichloro-2-butene . (33) 1,1-0ichloroethane; Ethylidene chloride . (34) 1,2-Dichloroethane; Ethylene dichloride . (35) 1,1-Dichloroethylene; 1,1-0ichloroethene; Viny1idene chloride . (36) cis-1,2-0ichloroethylene; cis-1,2-0ichloroethene . (37) trans-1,2-Dichloroethylene; trans-1,2-0ichloroethene (38) 1,2-Dichloropropane; Propylene dichloride . (39) cis-1,3-0ichloropropene . (40) trans-1,3-0ich1oropropene . (41) Ethy1benzene . (42) 2-Hexanone; Methyl butyl ketone . (43) Methyl bromide; Bromomethane . (44) Methyl chloride; Chloromethane . Page 1 of 2

Table 5 (continued) Southern Nuclear Operating Company, Inc. Plant Vogtle Landfills #2 and #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-Tetrachloroethane . (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. I - Page 2 of 2

Table 6 Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters June 2005 WEll SAMPLES CONSTITUENT MCl GWA-2/MW-2 GWC-3/MW-3 GWS-4/MW-4 GWC-11/MW-11 Metals 1 Sarium 2.00 0.021 Sal 0.042 0.034 Zinc NA Sal Sal 0.029 0.025 Organics 2 1,1-Dichloroethane NA Sal Sal Sal Sal Chlorobenzene 100 Sal Sal Sal Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal Methylene chloride 5 Sal Sal Sal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal Sal Trichlorofluoromethane NA Sal Sal Sal Sal 1,1-Dichloroethene 7 Sal Sal Sal Sal Xylenes (Total) 10000 Sal Sal Sal Sal Vinyl chloride 2 Sal 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 recharge to sample well 1Metals concentrations in mg/l or ppm 20 rgan ics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL. Page 1 of 9

I

 -                                         Table 6 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters December 2004 WEll SAMPLES CONSTITUENT MCl GWA-2/MW-2 GWC-3/MW-3 GWS-4/MW-4 GWC-11/MW-11 Metals 1 Sarium 2.00 Sal NS 0.021 Sal Zinc NA Sal NS Sal Sal 2 Organics 1,1-Dichloroethane NA Sal NS Sal Sal Chlorobenzene 100 Sal NS Sal Sal 1,4-Dicholorbenzene 75 Sal NS Sal Sal Methylene chloride 5 Sal NS Sal Sal cis-1,2-Dichloroethene 70 Sal NS Sal Sal Trichlorofluoromethane NA Sal NS Sal Sal 1,1-Dichloroethene 7 Sal NS Sal Sal Xylenes (Total) 10000 Sal NS Sal Sal Vinyl chloride 2 Sal NS Sal Sal BOl - Below quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or insufficient recharge to sample well 1Metals concentrations in mg/l or ppm 20rganics concentrations in ugll or ppb Bold indicates detected concentration is greater than the MCL. Page 2 of9

Table 6 (Continued) Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters June 2004 WEll SAMPLES CONSTITUENT MCl GWA-2/MW-2 GWC-3/MW-3 GWB-4/MW-4 GWC-11/MW-11 Metals 1 Sarium 2.00 SQl 0.020 SQl SQl Zinc NA SQl SQl SQl SQl Organics2 1,1-Dichloroethane NA SQl SQl SQl SQl Chlorobenzene 100 SQl SQl SQl SQl 1,4-Dicholorbenzene 75 SQl SQl SQl SQl Methylene chloride 5 SQl SQl SQl SQl cis-1,2-Dichloroethene 70 SQl SQl SQl SQl Trichlorofluoromethane NA SQl SQl 7 SQl 1,1-Dichloroethene 7 SQl SQl BQl SQl Xylenes (Total) 10000 SQl SQl SQl SQl Vinyl chloride 2 SQl SQl SQl SQl SQl - Selow quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available 1Metals concentrations in mg/l or ppm 20rganics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL. Page 30f9

,- Table 6 (continued) Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters December 2003 WEll SAMPLES CONSTITUENT MCl GWA-2/MW-2 GWC-3/MW-3 GWS-4/MW-4 GWC-11/MW-11 Metals 1 Sarium 2.00 Sal Sal Sal 0.022 Zinc NA Sal Sal Sal Sal 2 Organics 1,1-Dichloroethane NA Sal Sal Sal Sal Chlorobenzene 100 Sal Sal Sal Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal Methylene chloride 5 Sal Sal Sal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal Sal Trichlorofluoromethane NA Sal Sal 6 Sal 1,1-Dichloroethene 7 Sal Sal Sal Sal Xylenes (Total) 10000 Sal Sal Sal Sal Vinyl chloride 2 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 or ppm 20 rganics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL. Page 4 of9

Table 6 (continued) Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters June 2003 WELL SAMPLES CONSTITUENT MeL GWA-2/MW-2 GWC-3/MW-3 GWB-4/MW-4 GWC-11/MW-11 Metals 1 Barium 2.00 BOL NS BOL BOL Zinc NA BOL NS BOL 0.029 Organics 2 1,1-Dichloroethane NA BOL NS BOL BOL Chlorobenzene 100 BOL NS BOL BOL 1,4-Dicholorbenzene 75 BOL NS BOL BOL Methylene chloride 5 BOL NS BOL BOL cis-1,2-Dichloroethene 70 BOL NS BOL BOL Trichlorofluoromethane NA BOL NS BOL BOL 1,1-Dichloroethene 7 BOL NS BOL BOL Xylenes (Total) 10000 BOL NS BOL BOL Vinyl chloride 2 BOL NS BOL BOL BOL - Below quantification level MCL - Maximum Contaminant Level per EPD Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or insufficient recharge to sample well 1Metals concentrations in mg/L or ppm 20 rgan ics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL. Page 5 of 9

Table 6 (continued) Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters December 2002 WEll SAMPLES CONSTITUENT MCl GWA-2/MW-2 GWC-3/MW-3 GWS-4/MW-4 GWS-4/MW-4 3 GWC-11/MW-11 1 Metals Sarium 2.00 0.015 0.020 0.021 0.020 0.018 Zinc NA Sal 0.047 Sal Sal Sal 2 Organics 1,1-Dichloroethane NA Sal Sal Sal Sal Sal Chlorobenzene 100 Sal Sal Sal Sal Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal Sal Methylene chloride 5 Sal Sal Sal Sal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal Sal Sal Trichlorofluoromethane NA Sal Sal Sal Sal Sal 1,1-Dichloroethene 7 Sal Sal Sal Sal Sal Xylenes (Total) 10000 Sal Sal Sal Sal Sal Vinyl chloride 2 Sal Sal Sal Sal Sal Sal - Selow quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available 1 Metals concentrations in mg/l or ppm ,.- 20 rgan ics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL. Page 6 of9

,- Table 6 (continued) Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters October 2002 WEll SAMPLES CONSTITUENT MCl 3 GWA-2/MW-2 GWC-3/MW-3 GWS-4/MW-4 GWC-11/MW-11 Metals 1 Sarium 2 Sal NS 0.021 0.025 Zinc NA Sal NS Sal Sal Organics2 1,1-Dichloroethane NA Sal NS Sal Sal Chlorobenzene 100 Sal NS Sal Sal 1A-Dichlorobenzene 75 Sal NS Sal Sal Methylene chloride 5 Sal NS Sal Sal cis-1,2-Dichloroethene 70 Sal NS Sal Sal Trichlorofluoromethane NA Sal NS Sal Sal 1,1-Dichloroethene 7 Sal NS Sal Sal Xylenes (Total) 10000 Sal NS Sal Sal Vinyl chloride 2 Sal NS 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 recharge to sample well 1Metals concentrations in mg/l or ppm 20rganics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL. Page 7 of 9

Table 6 (continued) Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters September 2002 WELL SAMPLES CONSTITUENT MCL GWA-2/MW-2 GWC-3/MW-3 GWS-4/MW-4 GWC-11/MW-11 1 Metals Sarium 2 SOL SOL 0.021 0.020 Zinc NA SOL SOL SOL SOL 2 Organics 1,1-Dichloroethane NA SOL SOL SOL SOL Chlorobenzene 100 SOL SOL SOL SOL 1,4-Dichlorobenzene 75 SOL SOL SOL SOL Methylene chloride 5 SOL SOL SOL SOL cis-1,2-Dichloroethene 70 SOL SOL SOL SOL Trichlorofluoromethane NA SOL SOL SOL SOL 1,1-Dichloroethene 7 SOL SOL SOL SOL Xylenes (Total) 10000 SOL SOL SOL SOL Vinyl chloride 2 SOL SOL SOL SOL SOL - Selow quantification level MCL - Maximum Contaminant Level per EPD Rule Chapter 391-3-5; NA - None available lMetals concentrations in mg/L or ppm 20 rgan ics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL. Page 8of9

,- Table 6 (Continued) Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters July 2002 WEll SAMPLES CONSTITUENT MCl GWA-2/MW-2 GWC-3/MW-3 GWB-4/MW-4 GWC-11/MW-11 1 Metals Barium 2 0.027 BOl 0.021 0.085 Zinc NA BOl BOl BOl 0.034 2 Organics 1,1-Dichloroethane NA BOl BOl BOl BOl Chlorobenzene 100 BOl BOl BOl BOl 1,4-Dichlorobenzene 75 BQl BOl BOl BOl Methylene chloride 5 BOl 6 6 BOl cis-1,2-Dichloroethene 70 BOl BOl BOl BOl Trichlorofluoromethane NA BOl BOl 5 BOl 1,1-Dichloroethene 7 BOl BOl BOl BOl Xylenes (Total) 10000 BOl BOl BOl BOl Vinyl chloride 2 BOl BOl BOl BOl BOl - Below quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available 1 Metals concentrations in mg/l or ppm 20rganics concentrations in ug/l or ppb Bold indicates detected concentration is greater than the MCL. Page 90f9

I

-                                                                                                  Table 7 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-13/MW-13' GWC-14/MW-14 GWA-15/MW-15 GWC-17/MW-17 GWC-18IMW-18 Metals' Barium                      2.00            Sal           Sal           Sal               0.028              0.031              NS         Sal  SOL Sal Zinc                         NA             Sal           Sal           SOL               0.020               Sal               NS        0.029 Sal Sal Copper                      1.36            Sal           SOL           Sal                Sal                Sal               NS        Sal   SOL SOL Mercurl                    0.002            Sal           Sal           Sal                Sal                Sal               NS        Sal   Sal Sal Chromium (total)            0.1             Sal           Sal           Sal                SOL                SOL               NS        Sal   SOL Sal Seryllium                  0.004            Sal           Sal           Sal                Sal                SOL               NS        Sal   SOL Sal Cadmium                    0.005            SOL           SOL           Sal                Sal                Sal               NS        Sal   SOL Sal Nickel                      NA             Sal            Sal           Sal                Sal                Sal               NS        Sal   SOL Sal lead                      0.0156           Sal            SOL           Sal                SOL                Sal               NS        SOL   Sal SOL Vanadium                     NA             SOL           Sal           SOL                SOL                Sal               NS        Sal   Sal Sal Organics2 1,1-Dlchloroethane           NA            Sal            Sal           Sal                 15                 15               NS        Sal   Sal Sal Carbon disulfide             NA            Sal            SOL           Sal                Sal                Sal               NS        Sal    32 Sal Chlorobenzene               100            Sal            Sal           Sal                Sal                Sal               NS        Sal   Sal Sal 1A-Dlcholorbenzene           75            Sal            Sal           Sal               Sal                 Sal               NS        Sal   Sal Sal Methylene chlonde             5            Sal            Sal           Sal               Sal                 Sal               NS        Sal   Sal SOL C1s-1,2-Dichloroethene       70            Sal            Sal           Sal                  8                  8               NS        Sal   Sal SOL Trichlorofluoromethane       NA              SOL           Sal            22                 46                 45               NS        Sal   Sal Sal 1,1-Dichloroethene                         Sal            Sal           Sal               Sal                 SOL               NS        Sal   Sal SOL Xylenes (Tolal)            10000            Sal           Sal           Sal                Sal                Sal               NS         Sal  Sal Sal Vinyl chloride                2             Sal           Sal           Sal                Sal                Sal               NS        Sal   Sal Sal
,                3 Chloroform                  0.1             Sal           Sal           Sal                SOL                Sal               NS        Sal   Sal Sal Trichloroethene               5             SOL           Sal           Sal               SOL                 SOL               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 lMetals concentrations in mgll
    'Organics concentration units in ugn or ppb
    'Applies only to Community Water Systems serving 10,000
    'Appendix II parameler; NA reflects that this parameter was not analyzed tor those wells not included in the Assessment Monitoring Program
    'Replicate sample otwell GWC-13IMW-13 sample 6 Action Level Sold indicates detected concentration is greater than the MCl.

Page 1 ot9

- Table 7 (Continued) Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected' Parameters December 2004 WELL SAMPLES CONSTITUENT MCL 5 GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWA-7/MW-7 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 Metals' Sarium 2.00 SOL SOL SOL SOL 0.043 NS SOL Zinc NA SOL SOL SOL SOL 0.044 NS SOL 6 Copper 1.3 SOL SOL SOL SOL SOL NS SOL Mercury' 0.002 SOL SOL SOL 0.0017 SOL NS 0.0004 Chromium (total) 0.1 SOL SOL SOL SOL SOL NS SOL Seryllium 0.004 SOL SOL SOL SOL SOL NS SOL Cadmium 0.005 SOL SOL SOL SOL SOL NS SOL Nickel NA SOL SOL SOL SOL SOL NS SOL 6 Lead 0.015 SOL SOL SOL SOL SOL NS SOL Vanadium NA SOL SOL SOL SOL SOL NS SOL Organics2 1,1-Dichloroethane NA SOL SOL SOL SOL 16 NS SOL Chlorobenzene 100 SOL SOL SOL SOL SOL NS SOL 1,4-Dicholorbenzene 75 SOL SOL SOL SOL SOL NS SOL Methylene chloride 5 SOL SOL SOL SOL SOL NS SOL cis-1,2-Dichloroethene 70 SOL SOL SOL SOL 8 NS SOL Trichlorofluoromethane NA SOL SOL 146 143 81 NS SOL 1,1-Dichloroethene 7 SOL SOL SOL SOL SOL NS SOL Xylenes (Total) 10000 SOL SOL SOL SOL SOL NS SOL Vinyl chloride 2 SOL SOL SOL SOL SOL NS SOL Chloroform 3 0.1 SOL SOL SOL SOL SOL NS SOL Trichloroethene 5 SOL SOL SOL SOL SOL NS SOL SOL - 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 3AppJies 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 6Action Level Bold indicates detected concentration is greater than the MCL. r-Page 20f9

I

 -                                                                    Table 7 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters June 2004 WEll SAMPLES CONSTITUENT MCl 5 GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 Metals' Sarium 2.00 0.040 Sal Sal 0.034 0.034 NS Sal linc 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 0015 6 Sal Sal Sal Sal 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-l,2-Dichloroelhene 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

   'Metals concentrations in mg/l 20rganics concentration units in ugll 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 5Replicate sample of well GWC-13/MW-13 sample 6 Action level Bold indicates detected concentration is greater than the MCL.

Page 3 of9

,- Table 7 (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-135 GWC-14/MW-14 GWA-15/MW-15 Metals 1 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 6 Copper 1.3 0.025 Sal sal sal sal 0.026 sal Mercury' 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 lead 0.015 6 Sal sal sal sal sal 0.015 sal Vanadium NA Sal sal sal sal sal 0.060 sal Organics' 1,1-Dichloroethane NA Sal sal sal 20 21 10 SQL 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 I cis-1,2-Dichloroethene 70 sal sal sal 14 14 17 sal TrichlorofJuoromethane NA sal sal 34 102 97 sal sal 1,1-Dichloroethene 7 sal sal sal sal sal sal sal Xylenes (Total) 10000 Sal sal sal sal sal 10 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 20 rganics concentration units in ugll or ppb 3Applies only to Community Water Systems serving 10,000

    'Appendix II parameter 5Replicate sample of well GWC-13/MW-13 sample 6 Action level Bold indicates detected concentration is greater than the MCL.

Page 4 of9

,- Table 7 (continued) Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters June 2003 WEll SAMPLES CONSTITUENT MCl 5 GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-13/MW-13 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 0.0005 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 l,4-Dicholorbenzene 75 Sal Sal Sal Sal Sal 16 Sal Methylene chloride 5 Sal Sal Sal Sal Sal Sal Sal cis-l,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

       '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 MCL.

Page 5 of9

Table 7 (continued) So~thern 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 Barium 2.00 0.018 SOL 0.015 0.082 0.106 BOl Zinc NA SOL SOL SOL 0.027 SOL BOl Organics 2 1,1-Dichloroethane NA BOl SOL SOL 7 16 SOL Chlorobenzene 100 BOl SOL SOL SOL 10 SOL 1,4-Dicholorbenzene 75 SOL SOL SOL SOL 39 SOL Methylene chloride 5 SOL SOL BOl SOL BOl SOL cis-1,2-Dichloroethene 70 SOL BOl BOl BOl 19 BOl Trichlorofluoromethane NA SOL SOL 210 391 27 SOL 1,1-Dichloroethene 7 SOL BOl BQl 11 24 BQl Xylenes (Total) 10000 SOL SQl SQl BQl 21 BQl Vinyl chloride 2 SQl BQl SQl SOL 4 BQl 3 I Chloroform 0.1 BQl BQl SQl 5 BOl BQl BQl - Below quantification level MCl - Maximum Contaminant level per EPD Rule Chapter 391-3-5; NA - None available 1Metals concentrations in mg/l 20 rgan ics concentration units in ugll or ppb 3Applies only to Community Water Systems serving 10,000 Sold indicates detected concentration is greater than the MCL. I - Page 6 of9

Table 7 (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 SOL SOL SOL 0.083 0.064 SOL SOL Zinc SOL SOL SOL 0.027 SOL SOL SOL 2 Organics 1,1-Dichloroethane NA SOL SOL SOL 6 17 SOL SOL Chlorobenzene 100 SOL SOL SOL SOL 9 SOL Sal l,4-Dicholorbenzene 75 SOL SOL SOL SOL 35 Sal Sal Methylene chloride 5 SOL SOL SOL Sal 11 Sal Sal cis-1,2-Dichloroethene 70 SOL SOL SOL Sal 16 Sal Sal Trichlorofluoromethane NA SOL SOL 221 348 31 SOL SOL 1,1-Dichloroethene 7 SOL SOL Sal SOL SOL SOL SOL Xylenes (Total) 10000 SOL SOL Sal SOL 11 SOL SOL Vinyl chloride 2 Sal SOL SOL SOL SOL Sal SOL SOL - 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 3 Replicate sample of GWA-15/1MW-15 well Sold indicates detected concentration is greater than the MCL.

I Page 7 of9

I

-                                                                    Table 7 (continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters September 2002 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWB-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-14/MW-14 GWC-14-21MW-14-23 GWA-15/MW-15 Metals' Barium 2 0.020 BOl BOl 0.085 0.092 0.095 BOl Zinc NA BOl BOl BOl 0.023 BOl BOl BOl Organics' 1,1-Dichloroethane NA BOl BOl BOl 6 21 21 BOl Chlorobenzene 100 BOl BOl BOl BOl 8 8 BOl 1,4-Dichlorobenzene 75 BOl BOl BOl BOl 37 36 BOl Methylene chloride 5 BOl BOl BOl BOl BOl BOl BOl cis-1,2-Dichloroethene 70 BOl BOl BOl BOl 19 18 BOl Trichlorofluoromethane NA BOl BOl 32 381 47 48 BOl 1,1-Dichloroethene 7 BOl BOl BOl 8 29 28 BOl Xylenes (Total) 10000 BOl BOl BOl BOl 23 23 BOl Vinyl chloride 2 BOl BOl BOl BOl BOl 3 BOl BOl - Below quantification level MCl - Maximum Contaminant level per Georgia EPD Rule Chapter 391-3-5; NA - None available

    'Metals concentrations in mg/l
    'Organics concentration units in ugll or ppb 3Replicate sample of GWB-14/1MW-14 well sample

( Bold indicates detected concentration is greater than the MCL. Page 8 of9

Table 7 (continued) Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters July 2002 WEllS 1 CONSTITUENT MCl 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 Organics 2 1,1-Dichloroethane NA Sal Sal Sal Sal Sal 13 Sal Chlorobenzime 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 1 Metals concentrations in mg/l 20 rganics concentration units in ug/l or ppb 3 Replicate sample of GWA-7/MW-7 well sample Bold indicates detected concentration is greater than the MCL. . Page 90f9

FIGURES Date: 10/18/2005 Time : 08:57:48 AM Date: 10/18/2005 Time : 09:01:07 AM ApPENDIX A - HYDRAULIC GRADIENT CALCULATION SHEETS I I

LANDFILL #2

Plant Vogtle Landfill #2 Gradient Calculation (based on three-point problem) June 2005 Monitoring Event Water Table Well Designation Elevation Northing Easting GWA-2/MW-2 210.00 11755.95 9622.59 GWC-3/MW-3 203.64 12048.48 8881.72 GWB-4/MW-4 203.44 11205.40 9466.20 Gradient Calculation from fitting a plane to three points a x 1 + b Y1 + cZ 1 + d =0 a X2 + b Y2 + CZ2 + d = 0 a X3 + b Y3 + cZ3 + d = 0 where (Xj,Yi) are the coordinates of the well and zi is the head, i = 1,2,3 The gradient is calculated from the square root of (a 2 + b2 ) Southwest Gradient Wells of Interest = (GWA-2, GWC-3 & GWB-4) (High-Mid-Low) x Y z GWA-2/MW-2 11755.95 9622.59 210 GWC-3/MW-3 12048.48 8881.72 203.64 GWB-4/MW-4 11205.40 9466.20 203.44 9622.59 210 1 a= 8881.72 203.64 1 3865.4668 9466.20 203.44 1 1= 11755.95 210 1 b= 12048.48 203.64 1 -5420.495 11205.40 203.44 1 1= 11755.95 9622.59 1 c= 12048.48 8881.72 1 -453634.7 11205.40 9466.20 1 1= 11755.95 9622.59 210 d= 12048.48 8881.72 203.64 2338137 11205.40 9466.20 203.44 1= zO = 5.154228193 mx= 0.008521099 my= -0.011949029 ISouthwest Gradient = 0. 0147 1 I Page 1 of 1

LANDFILL #3 1

Plant Vogtle Landfill #3 Gradient Calculation (based on three-point problem) June 2005 Monitoring Event Water Table Well Designation Elevation Northing Easting GWC-5/MW-5 206.02 9604.30 7999.33 GWB-6/MW-6 231.03 9432.48 7473.25 GWA-7/MW-7 230.69 8826.22 7657.89 GWC-13/MW-13 234.32 9242.72 7995.86 GWC-14/MW-14 211.22 8960.64 7999.10 GWA-15/MW-15 228.05 8975.71 6886.73 GWC-17/MW-17 149.82 8553.09 8135.59 GWC-18/MW-18 150.49 8938.05 8238.63 Gradient Calculation from fitting a plane to three points a X1 + b Y1 + cZ 1 + 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)

I x Y z GWB-6/MW-6 9432.48 7473.25 231.03 GWA-7/MW-7 8826.22 7657.89 230.69 GWA-15/MW-15 8975.71 6886.73 228.05 7473.25 231.03 1 a= 7657.89 230.69 1 = -749.644 6886.73 228.05 1 9432.48 231.03 1 b= 8826.22 230.69 1 = 1651.353 8975.71 228.05 1 9432.48 7473.25 1 c= 8826.22 7657.89 1 439921.63 8975.71 6886.73 1 1= 9432.48 7473.25 231.03 d= 8826.22 7657.89 230.69 82223118 8975.71 6886.73 228.05 1=

,-  zO=

mx=

                             -186.9040134 0.00170404
                                                                                        /'-'

f1't, Page 1 of 3

Plant Vogtle Landfill #3 Gradient Calculation (based on three-point problem) my= -0.003753744 ISouthwest Gradient = 0. 0041 1 Northeast Gradient Wells of Interest = (GWC-13, GWB-6 & GWC-5) (High-Mid-Low) x Y z GWC-13/MW-13 9242.72 7995.86 234.32 GWB-6/MW-6 9432.48 7473.25 231.03 GWC-5/MW-5 9604.30 7999.33 206.02 7995.86 234.32 1 a= 7473.25 231.03 1 = 14801.279 7999.33 206.02 1 9242.72 234.32 1 b= 9432.48 231.03 1 -4180.61 9604.30 206.02 1 1= 9242.72 7995.86 1 c= 9432.48 7473.25 1 189623.79 1= 9604.30 7999.33 1 9242.72 7995.86 234.32 d= 9432.48 7473.25 231.03 214664298 9604.30 7999.33 206.02 1= zO = -1132.053612 mx= -0.078056025 my= 0.022046863 INortheast Gradient = 0.0811 ~ I 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 7995.86 234.32 GWA-7/MW-7 8826.22 7657.89 230.69 GWC-14/MW-14 8960.64 7999.10 211.22 7995.86 234.32 1 a= 7657.89 230.69 1 7818.8682 7999.10 211.22 1 1= 9242.72 234.32 1 b= 8826.22 230.69 1 = 8597.1996 8960.64 211.22 1 9242.72 7995.86 1 c= 8826.22 7657.89 1 = -96684.04 8960.64 7999.10 1 9242.72 7995.86 234.32 d= 8826.22 7657.89 230.69 = -19129399 8960.64 7999.10 211.22 zO = -197.8547759 mx= 0.080870311 my= 0.088920569 ISoutheast Gradient = 0. 1202 1 I -- Page 3 of 3

 -  ApPENDIX B - LABORATORY ANALYTICAL REPORTS JUNE 2005 I

   ~ A CL 1 Phone: (770) 409*1444 A_D_~_~_C.....'E..V....... C-1l.~E........'M~1.S~TR~Y~LA~B-'S~,~IN~C.

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

                         ,-------------~---

I I Laboratory Report I I i ACL Project #: 48231 I Client Proj #: Plant Vogtle I Prepared For: I The Dextra Group, LLC I 4665 Lower Roswell Road

                                          #154 Marietta, GA 30068-0000 Attention: Mr. Kurt Batsel Report Date: 7/15/2005 This report contains 88 pages.

(including this cover page and chain of custody)

                                             -M.-l1_:.                  $

Markorios Adafre

                                                                            -tA d$

Laboratory Manager 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 (nO) 409-1444. 1- 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 88

IA CL 1~ Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_Jl:_~N_CE~'D~C_'H~E~M~lS~T.~'R"""!",!Y~L~A_B-.;;s,~L"!",,,,,N_C. 3039 Amwiler Road, Suite 100, Atlanta, GA 30360 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; OW 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.

1- NOTE: Unless otherwise noted, all results are reported on an as received basis. Page 2 of 88

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                      #154                               Date Received:       06/17/2005 Marietta, GA 30068-0000            Date Reported:       07/15/2005

Contact:

Mr. Kurt Batsel V.D. (50308/82608) - Appendix I Sample 10: GWA-2/MW-2 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: Date Analyzed: 06/22/2005 ACL Sample #: 233715 Units: J,Jg/L Analyst: RP Analyte 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

 ~moform                                sal          5       1,1,1-Trichloroethane                Sal             5
       ,-bon 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-Xylenes                        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                           SOL         50 Methyl bromide                       SOL         10
 --Methyl chloride                      Sal         10 I

thyl ethyl ketone SOL 100 IVlethyl iodide SOL 5 4-Methyl-2-pentanone Sal 50 Methylene bromide Sal 5 Methylene chloride Sal 5 Page 3 of 88

IACLI Fax: (770) 409-1844 ADVANCED CHEMISTRYLABS, INC. Phone: (770) 4~09':"'-~14~44~--------------"':3~03~9~A~m-w~i1e-r-=R~o-a~d-."':S~ui~te-1~0~0-.-=A~tl~an~ta-. 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                      #154                                        Date Received:         06/17/2005 Marietta, GA 30068-0000                     Date Reported:         07/15/2005

Contact:

Mr. Kurt Batsel v.o. (5030B/8260B) - Appendix I Sample 10: GWC-3/MW-3 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: Date Analyzed: 06/22/2005 ACL Sample #: 233716 Units: IJg/L Analyst: RP 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

~omoform                                   Sal             5          1,1,1-Trichloroethane                 Sal                5

bon 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-Xylenes 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

 ..M.ethyl chloride                        Sal            10 I

thyl ethyl ketone Sal 100

   ,,,.ethyl iodide                        Sal             5 4-Methyl-2-pentanone                    Sal            50 Methylene bromide                       Sal             5 Methylene chloride                      Sal             5 Page 4 ot88

IA CL -----A-D-~-~-C-~......'D-C-'H.......E........'M-Z-S-TR-YLA-B-'S-,-IM-C.-. I Phone: (770) 409-1444 3039 Amwiler Road* Suite 100* Atlanta. GA 30360 - Fax: (770) 409-1844 e-mail: acl@acl-Iabs.net P.O. Box 88610* Atlanta. GA 30356 www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                             Date Received:       06/17/2005 Marietta, GA 30068-0000          Date Reported:       07/15/2005

Contact:

Mr. Kurt Batsel V.O. (5030B/8260B)

Appendix I Sample 10: GWB-4/MW-4 Matrix: Water Date Sampled: 06/14/2005 Date Extracted:

Date Analyzed: 06/22/2005 ACL Sample #: 233717 Units: IJg/L Analyst: RP 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 Sromochforomethane Sal 5 Tetrachloroethene Sal 5 Sromodichloromethane Sal 5 Toluene Sal 5 ...2comoform Sal 5 1,1.1-Trichloroethane Sal 5 rbon 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-Xylenes Sal 10 1,2-Dibromoethane Sal 5 o-Xylene Sal 5 trans-1,4-Dichloro-2-butene Sal 10 1,2-Dichlorobenzene Sal 5 1,4-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 thyl ethyl ketone Sal 100 1~lethyl iodide Sal 5 4-Methyl-2-pentanone Sal 50 Methylene bromide Sal 5 Methylene chloride Sal 5 Page 5 of 88

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                     #154                                     Date Received:       06/17/2005 Marietta, GA 30068-0000                  Date Reported:       07/15/2005

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Mr. Kurt Batsel v.a. (50308/82608) - Appendix I Sample 10: GWC-11/MW-11 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: Date Analyzed: 06/22/2005 ACL Sample #: 233718 Units: j.Jg/L Analyst: RP Analvte Result PQL Analyte Result PQL Acetone SOL 100 Styrene SOL 5 Acrylonitrile SOL 50 1,1,1,2-Tetrachloroethane SOL 5 Senzene SOL 5 1,1,2,2-Tetrachloroethane SOL 5 Sromochloromethane SOL 5 Tetrachloroethene SOL 5 Sromodichloromethane SOL 5 Toluene SOL 5

 .-Qcomoform                             SOL            5         1,1,1-Trichloroethane               SOL            5 rbon disulfide                     SOL            5         1,1,2-Trichloroethane               SOL            5 Carbon tetrachloride                  SOL            5         Trichloroethene                     SOL             5 Chlorobenzene                         SOL            5         Trichlorofluoromethane              SOL            5 Chloroethane                          SOL            10        1,2,3-Trichloropropane              SOL            5 Chloroform                            SOL            5         Vinyl acetate                       SOL            50 1,2-Dibromo-3-chloropropane           SOL           20         Vinyl chloride                      SOL             2 Dibromochloromethane                  SOL            5         m & p-Xylenes                       SQL            10 1,2-Dibromoethane                     SOL            5         o-Xylene                            SOL             5 trans-1 ,4-Dichloro-2-butene          SOL            10 1,2-Dichlorobenzene                   SOL            5 1A-Dichlorobenzene                    SOL            5 1,1-Dichloroethane                    SOL            5 1,2-Dichloroethane                    SOL            5 1,1-Dichloroethene                    SOL            5 cis-1,2-Dichloroethene                SOL            5 trans-1 ,2-Dichloroethene             SOL            5 1,2-Dichloropropane                   SOL            5 cis-1,3-Dichloropropene               SOL            5 trans-1 ,3-Dichloropropene            SOL            5 Ethylbenzene                          SOL            5 2-Hexanone                            SOL            50 Methyl bromide                        SOL            10
...A.iethyl chloride                     SOL            10 I

thyl ethyl ketone SOL 100 Methyl iodide SOL 5 4-Methyl-2-pentanone SOL 50 Methylene bromide SOL 5 Methylene chloride SOL 5 Page 6of88

iA CL I ADVANCED CHEMISTRYLABS, INC. Phone: (770) 4~0':"9.~1~44~4~-------------~3~03~9~A~m-w~i1e-r~R~o-a~d-.~S~ui~te-1~0~0-.~A~tJ-an~ta-. 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

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Mr. Kurt Batsel V.C. (50308/82608) - Appendix I Sample ID: GWC-5/MW-5 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: Date Analyzed: 06/22/2005 ACL Sample #: 233719 Units: IJg/L Analyst: RP Analvte Result POL Analyte Result POL Acetone SOL 100 Styrene SOL 5 Acrylonitrile SOL 50 1,1,1,2-Tetrachloroethane SOL 5 Senzene SOL 5 1,1,2,2-Tetrachloroethane SOL 5 Sromochloromethane SOL 5 Tetrachloroethene SOL 5 Sromodichloromethane SOL 5 Toluene SOL 5 ,~omoform SOL 5 1,1,1-Trichloroethane SOL 5

      .rbon disulfide                    SOL           5           1,1,2-Trichloroethane               SOL                5 Carbon tetrachloride                  SOL            5         Trichloroethene                      SOL                5 Chlorobenzene                         SOL            5         Trichlorofluoromethane               SOL                5 Chloroethane                          SOL           10          1,2,3-Trichloropropane              SOL                5 Chloroform                            SOL            5         Vinyl acetate                        SOL               50 1,2-Dibromo-3-chloropropane           SOL          20          Vinyl chloride                       SOL                2 Dibromochloromethane                  SOL            5         m & p-Xylenes                        SOL               10 1,2-Dibromoethane                     SOL           5          o-Xylene                             SOL                5 trans-1 A-Dichloro-2-butene           SOL           10 1,2-Dichlorobenzene                   SOL           5 1A-Dichlorobenzene                    SOL           5 1,1-Dichloroethane                    SOL           5 1,2-Dichloroethane                    SOL           5 1,1-Dichloroethene                    SOL           5 cis-1 ,2-Dichloroethene               SOL           5 trans-1,2-Dichloroethene              SOL           5 1,2-Dichloropropane                   SOL           5 cis-1,3-Dichloropropene               SOL           5 trans-1,3-Dichloropropene             SOL           5 Ethylbenzene                          SOL           5 2-Hexanone                            SOL          50 Methyl bromide                        SOL          10
....A4.ethyl chloride                    SOL           10 thyl ethyl ketone                 SOL          100 Methyl iodide                         SOL           5 4-Methyl-2-pentanone                  SOL          50 Methylene bromide                     SOL           5 Methylene chloride                    SOL           5 Page 7 of 88

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                       #154                                    Date Received:       06/17/2005 Marietta, GA 30068-0000                 Date Reported:       07/15/2005

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Mr. Kurt Batsel V.O. (50308/82608)

Appendix I Sample 10: GWB-6/MW-6 Matrix: Water Date Sampled: 06/13/2005 Date Extracted:

Date Analyzed: 06/22/2005 ACL Sample #: 233720 Units: ~g/L Analyst: RP 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 ,...2romoform Sal 5 1,1,1-Trichloroethane SOL 5 rbon 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-Xylenes 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

 ...M...ethyl chloride                    Sal           10 Sal          100 I

thyl ethyl ketone

   ,Ylethyl iodide                        Sal           5 4-Methyl-2-pentanone                   Sal          50 Methylene bromide                      Sal           5 Methylene chloride                     Sal           5 Page 8 of 88

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                    #154                              Date Received:         06/17/2005 Marietta, GA 30068-0000           Date Reported:         07/15/2005

Contact:

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Appendix I Sample ID: GWA-7/MW-7 Matrix: Water Date Sampled: 06/14/2005 Date Extracted:

Date Analyzed: 06/22/2005 ACL Sample #: 233721 Units: IJg/L Analyst: RP 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 Jar-omoform Sal 5 1,1,1-Trichloroethane Sal 5 "bon disulfide Sal 5 1,1,2-Trichloroethane Sal 5 L;arbon tetrachloride Sal 5 Trichloroethene Sal 5 Chlorobenzene Sal 5 Trichlorofluoromethane 22 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-Xylenes 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

~ethyl chloride                       Sal         10 I

thyl ethyl ketone Sal 100

  ,**ethyl iodide                     Sal         5 4-Methyl-2-pentanone                Sal        50 Methylene bromide                   Sal         5 Methylene chloride                  Sal          5 Page 9 of 88

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                    #154                              Date Received:       06/17/2005 Marietta, GA 30068-0000           Date Reported:       07/15/2005

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Appendix I Sample ID: GWC-17/MW-17 Matrix: Water Date Sampled: 06/15/2005 Date Extracted:

Date Analyzed: 06/22/2005 ACL Sample #: 233724 Units: ~g/L Analyst: RP Analvte Result PQL Analyte Result PQL Acetone SOL 100 Styrene SOL 5 Acrylonitrile SOL 50 1,1,1,2-Tetrachloroethane SOL 5 Senzene SOL 5 1,1,2,2-Tetrachloroethane SOL 5 Sromochloromethane SOL 5 Tetrachloroethene SOL 5 Sromodichloromethane SOL 5 Toluene SOL 5 ...Bromoform SOL 5 1,1,1-Trichloroethane SOL 5 rbon disulfide 32 5 1,1,2-Trichloroethane SOL 5 varbon tetrachloride SOL 5 Trichloroethene SOL 5 Chlorobenzene SOL 5 Trichlorofluoromethane SOL 5 Chloroethane SOL 10 1,2,3-Trichloropropane SOL 5 Chloroform SOL 5 Vinyl acetate SOL 50 1,2-Dibromo-3-chloropropane SOL 20 Vinyl chloride SOL 2 Dibromochloromethane SOL 5 m & p-Xylenes SOL 10 1,2-Dibromoethane SOL 5 o-Xylene SOL 5 trans-1,4-Dichloro-2-butene SOL 10 1,2-Dichlorobenzene SOL 5 1,4-Dichlorobenzene SOL 5 1,1-Dichloroethane SOL 5 1,2-Dichloroethane SOL 5 1,1-Dichloroethene SOL 5 cis-1 ,2-Dichloroethene SOL 5 trans-1,2-Dichloroethene SOL 5 1,2-Dichloropropane SOL 5 cis-1 ,3-Dichloropropene SOL 5 trans-1,3-Dichloropropene SOL 5 Ethylbenzene SOL 5 2-Hexanone BOl 50 Methyl bromide SOL 10 Methyl chloride BOl 10 , - thyl ethyl ketone SOL 100

 ... ~thyl iodide                     SOL         5 4-Methyl-2-pentanone                 BOl        50 Methylene bromide                    BOl         5 Methylene chloride                   Sal         5 Page 10 of 88

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                   #154                              Date Received:        06/17/2005 Marietta. GA 30068-0000          Date Reported:        07/15/2005

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Appendix I Sample 10: GWC-18/MW-18 Matrix: Water Date Sampled: 06/1512005 Date Extracted:

Date Analyzed: 06/2212005 ACL Sample #: 233725 Units: 1J9/L Analyst: RP Analyte 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 ,Jil(omoform Sal 5 1,1,1-Trichloroethane Sal 5

     'bon 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-Xylenes                        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

~thyl chloride Sal 10

     ~hyl ethyl ketone               Sal        100 IVII~thyl iodide                     Sal         5 4-Methyl-2-pentanone                 Sal        50 Methylene bromide                    Sal         5 Methylene chloride                   Sal         5 Page 11 of 88

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                   #154                                Date Received:       06/17/2005 Marietta, GA 30068-0000              Date Reported:      07/15/2005

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Appendix I Sample 10: EO Blank Matrix: Water Date Sampled: 06/1512005 Date Extracted:

Date Analyzed: 06/22/2005 ACL Sample #: 233727 Units: J.I9/L Analyst: RP 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 J3,romoform sal 5 1,1,1-Trichloroethane Sal 5 rbon disulfide Sal 5 1,1,2-Trichloroethane Sal 5

 ""arbon 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-Xylenes                       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 1     thyl ethyl ketone                sal         100
 ...ethyl iodide                      Sal           5 4-Methyl-2-pentanone                 sal         50 Methylene bromide                   Sal           5 Methylene chloride                   Sal           5 Page 12 of 88

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Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/13/2005 Date Extracted:

Date Analyzed: 06/22/2005 ACL Sample #: 233722 Units: IJg/l Analyst: RP Analvte 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 ~nzene Sal 5 Methyl bromide Sal 10

     !mochloromethane                 Sal            5          Methyl chloride                      Sal               10 tsromodichloromethane                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 1,4-Dichlorobenzene                   Sal           5          1,1,2-Trichloroethane                 Sal               5 Dichlorodifluoromethane              Sal            5          Trichloroethene                       Sal               5 1,1-Dichloroethane                    15            5          Trichlorofluoromethane                 46               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                 8            5          Vinyl chloride                        Sal               2 trans-1,2-Dichloroethene             Sal            5          m & p-Xylenes                         Sal              10 1,2-Dichloropropane                   Sal           5          o-Xylene                              Sal               5 1     .Dichloropropane                 Sal            5
 ..,L-Dichloropropane                  Sal           15 1,1-Dichloropropene                   Sal            5 cis-1 ,3-Dichloropropene              Sal            5 trans-1,3-Dichloropropene             Sal            5 Page 13 of 88

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Appendix II

      . Sample 10:           GWA-15/MW-15                          Matrix:             Water Date Sampled:       06/1412005 Date Extracted:

Date Analyzed: 06/22/2005 ACL Sample #: 233723 Units: J,Jg/L Analyst: RP Analvte Result PQL Analvte Result PQL Acetone BOl 100 Ethyl methacrylate BOl 10 Acetonitrile BOl 100 Ethylbenzene BOl 5 Acrolein BOl 100 2-Hexanone BOl 50 Acrylonitrile BOl 50 Isobutyl alcohol BOl 50 Allyl chloride BOl 10 Methacrylonitrile BOl 100 .Benzene

  -                                   BOl         5       Methyl bromide                        BOl           10 mochlorometha ne                BOl         5       Methyl chloride                       BOl           10
...,omodichloromethane                BOl         5       Methyl ethyl ketone                   BOl          100 Bromoform                             BOl         5       Methyl iodide                         BOl            5 Carbon disulfide                      BOl         5       Methyl methacrylate                   BOl           30 Carbon tetrachloride                  BOl         5      4-Methyl-2-pentanone                   BOl           50 Chlorobenzene                         BOl         5       Methylene bromide                     BOl            5 Chloroethane                          BOl        10       Methylene chloride                    BOl            5 Chloroform                            BOl         5       Naphthalene                           BOl            5 Chloroprene                           BOl        20       Propionitrile                         BOl          150 1,2-Dibromo-3-chloropropane           BOl        20      Styrene                                BOl            5 Dibromochloromethane                  BOl         5       1,1 ,1,2-Tetrachloroethane            BOl            5 1,2-Dibromoethane                     BOl         5       1,1,2,2-Tetrachloroethane             BOl            5 trans-1,4-Dichloro-2-butene           BOl        10      Tetrachloroethene                      BOl            5 1,2-Dichlorobenzene                   BOl         5      Toluene                                BOl            5 1,3-Dichlorobenzene                   BOl         5       1,1,1-Trichloroethane                 BOl            5 1A-Dichlorobenzene                    BOl         5       1,1,2-Trichloroethane                 BOl            5 Dichlorodifluoromethane               BOl         5      Trichloroethene                        BOl            5 1,1-Dichloroethane                    BOl         5      Trichlorofluoromethane                 BOl            5 1,2-Dichloroethane                    BOl         5      1,2.3-Trichloropropane                 BOl            5 1,1-Dichloroethene                    BOl         5      Vinyl acetate                          BOl           50 cis-1,2-Dichloroethene                BOl         5      Vinyl chloride                         BOl            2 trans-1,2-Dichloroethene              BOl         5      m & p-Xylenes                          BOl           10 1,2-Dichloropropane                   BOl         5      o-Xylene                               BOl            5

, - *Dichloropropane BOl 5

    .-Dichloropropane                 BOl        15 1,1-Dichloropropene                   BOl         5 cis-1,3-Dichloropropene               BOl         5 trans-1,3-Dichloropropene             BOl         5 Page 14 of 88

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                  #154                                  Date Received:         06/17/2005 Marietta, GA 30068-0000               Date Reported:         07/15/2005

Contact:

Mr. Kurt Batsel V.O. (5030B/8260B) - Appendix II Sample 10: GWC-13/MW-13 DUP Matrix: Water Date Sampled: 06/13/2005 Date Extracted: Date Analyzed: 06/22/2005 ACL Sample #: 233726 Units: ~g/L Analyst: RP 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 J2,.enzene Sal 5 Methyl bromide Sal 10 lmochloromethane Sal 5 Methyl chloride Sal 10 uromodichloromethane 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 15 5 Trichlorofluoromethane 45 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 8 5 Vinyl chloride Sal 2 trans-1 ,2-Dichloroethene Sal 5 m & p-Xylenes Sal 10 1,2-Dichloropropane Sal 5 o-Xylene Sal 5 , - ,-Dichloropropane Sal 5 _,,,-Dichloropropane Sal 15 1,1-Dichloropropene Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene Sal 5 Page 15 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                              Date Received:        06/17/2005 Marietta, GA 30068-0000           Date Reported:        07/15/2005

Contact:

Mr. Kurt Batsel v.o. (50308/82608) - Appendix II Sample 10: Trip Blank Matrix: Water Date Sampled: 06/1312005 Date Extracted: Date Analyzed: 06/22/2005 ACL Sample #: 233728 Units: 1J9/L Analyst: RP Analyte Result PQL Analvte Result PQL Acetone SOL 100 Ethyl methacrylate SOL 10 Acetonitrile SOL 100 Ethylbenzene SOL 5 Acrolein SOL 100 2-Hexanone SOL 50 Acrylonitrile SOL 50 Isobutyl alcohol SOL 50 Allyl chloride SOL 10 Methacrylonitrile SOL 100

 ~enzene                               SOL        5      Methyl bromide                       SOL            10 Imochloromethane                  SOL        5      Methyl chloride                      SOL            10 oromodichloromethane                 SOL        5      Methyl ethyl ketone                  SOL            100 Sromoform                            SOL        5      Methyl iodide                        SOL             5 Carbon disulfide                     SOL        5      Methyl methacrylate                  SOL            30 Carbon tetrachloride                  SOL        5     4-Methyl-2-pentanone                  SOL            50 Chlorobenzene                         SOL        5      Methylene bromide                    SOL             5 Chloroethane                          SOL        10     Methylene chloride                   SOL             5 Chloroform                            SOL        5      Naphthalene                          SOL             5 Chloroprene                           SOL       20      Propionitrile                        SOL            150 1,2-Dibromo-3-chloropropane           SOL       20      Styrene                              SOL             5 Dibromochloromethane                  SOL        5      1,1 ,1,2-Tetrachloroethane           SOL             5 1,2-Dibromoethane                    SOL        5      1,1,2,2-Tetrachloroethane            SOL             5 trans-1 A-Dichloro-2-butene           SOL       10      Tetrachloroethene                    SOL             5 1,2-Dichlorobenzene                  SOL        5     Toluene                               SOL             5 1,3-Dichlorobenzene                  SOL        5      1,1.1-Trichloroethane                SOL             5 1A-Dichlorobenzene                   SOL        5      1,1,2-Trichloroethane                SOL             5 Dichlorodifluoromethane               SOL        5     Trichloroethene                       SOL             5 1,1-Dichloroethane                   SOL        5     Trichlorofluoromethane                SOL             5 1,2-Dichloroethane                   SOL        5      1,2,3-Trichloropropane               SOL             5 1,1-Dichloroethene                    SOL        5     Vinyl acetate                         SOL            50 cis-1,2-Dichloroethene                SOL        5     Vinyl ch.loride                       SOL             2 trans-1,2-Dichloroethene              SOL        5      m & p-Xylenes                        SOL            10 1
 -1,2-Dichloropropane
     -Dichloropropane

_,L-Dichloropropane SOL SOL SOL 5 5 15 o-Xylene SOL 5 1,1-Dichloropropene SOL 5 cis-1,3-Dichloropropene SOL 5 trans-1,3-Dichloropropene SOL 5 Page 16 of 88

IA CL 1~~ A_D_~_:4M_C......'E.~'D~c_rn.E"""""","'M_Z_S__TR_Y LA_B_'S.__,_IM_C._. 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                     #154                               Date Received:         06/17/2005 Marietta, GA 30068-0000            Date Reported:         0711512005

Contact:

Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample ID: GWA-7/MW-7 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233721 Units: 1J9/L Analyst: RB Analvte Result PQL 4-Chloro-3-methylphenol SOL 20 2-Chlorophenol SOL 10 m & p-Cresol SOL 10 o-Cresol SOL 10 2,4-Dichlorophenol SOL 10

 ...2-6-Dichlorophenol                 SOL         10
       -Dimethylphenol                 SOL         10 4,6-Dinitro-2-methylphenol          SOL         50 2,4-Dinitrophenol                   SOL         50 2-Nitrophenol                       SOL         10 4-Nitrophenol                       SOL        50 Pentachlorophenol                   SOL         50 Phenol                              SOL         10 2,3,4 ,6-Tetrachlorophenol          SOL         10 2,4,5-Trichlorophenol               SOL         10 2,4,6-Trichlorophenol               SOL         10 I

Page 17 of 88

IA CL 1~~ Phone: (770) 409-1444 A_D_V;_j4.N_C~'E~'D~C~1L~E.""""""",'M~1,~S~TR

                                                                                              ......Y~LA_B_'S......-, ........

3039 Amwiler Road* Suite 100* Atlanta. GA 30360 IM .....C._. Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                     #154                                 Date Received:        06/17/2005 Marietta, GA 30068-0000              Date Reported:        07/15/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample ID: GWA-7/MW-7 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233721 Units: IJg/L Analyst: RB Analvte 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 BOl 10 2-Acetylaminofluorene BOl 20 3,3'-Dimethylbenzidine BOl 10 4-Aminobiphenyl BOl 20 m-Dinitrobenzene BOl 20

 ..AQthracene                          BOl       10           2A-Dinitrotoluene                        BOl                 10 lzo(a)anthracene                BOl       10           2,6-Dinitrotoluene                       BOl                 10 Benzo(a)pyrene                      BOl       10           Diphenylamine                            BOl                 10 Benzo(b)f1uoranthene                BOl       10           Disulfoton                               BOl                 10 Benzo(g,h,i)perylene                BOl       10           Ethyl methanesulfonate                   BOl                 20 Benzo(k)f1uoranthene                BOl       10           Famphur                                  BOl                 20 Benzyl alcohol                      BOl       20           Fluoranthene                             BOl                 10 Bis(2-chloroethoxy)methane          BOl       10           Fluorene                                 BOl                 10 Bis(2-chloroethyl)ether             BOl       10           Hexachlorobenzene                        BOl                 10 Bis(2-chloroisopropyl)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                        BOl                 10 p-Chloroaniline                     BOl       20           Indeno(1,2,3-cd)pyrene                   BOl                 10 Chlorobenzilate                     BOl       10           Isodrin                                  BOl                 20 2-Chloronaphthalene                 BOl       10           Isophorone                               BOl                 10 4-Chlorophenyl phenyl ether         BOl       10           Isosafrole                               BOl                 10 Chrysene                            BOl       10           Kepone                                   BOl                 20 Di-n-butyl phthalate                BOl       10           Methapyrilene                            BOl               100 Di-n-octyl phthalate                BOl       10           Methyl methanesulfonate                  BOl                 10 Diallate                            BOl       10           Methyl parathion                         BOl                 10 Dibenz(a,h)anthracene               BOl       10           3-Methylcholanthrene                     BOl                 10 Dibenzofuran                        BOl       10          2-Methylnaphthalene                       BOl                 10
,J...?-Dichlorobenzene                 BOl       10           Naphthalene                              BOl                 10 I
       -Dichlorobenzene                BOl       10           1A-Naphthoquinone                        BOl                 10 I A-Dichlorobenzene                 BOl       10           1-Naphthylamine                          BOl                 10 3,3'-Dichlorobenzidine              BOl       20           2-Naphthylamine                          BOl                 10 Diethyl phthalate                   BOl       10           5-Nitro-o-toluidine                      BOl                 10 Dimethoate                          BOl       10           2-Nitroaniline                           BOl                 50 Page 18 of 88

IA CL I ADVANCED CHEMISTRYLABS, INC. Phone: (770) 4~0':"'9-"":"1~44~4~-------------~3~03~9~A~m-w~i~le-r~R-oa-d~*~S~u~ite---10""""0-.~A~tl-an-ta-.-G""""A""""30""""3""""6""O-Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356

 -         e-mail: acl@acl-Iabs.net                                                                    www.advancedchemistrylabs.com Client:            The Dextra Group, LLC                             Client Proj #:          Plant Vogtle 4665 Lower Roswell Road                           ACL Project #:          48231
                      #154                                              Date Received:          06/17/2005 Marietta, GA 30068-0000                           Date Reported:          07/15/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233721 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

 ..bl:Nitrosodimethylamine                    SOL             10
        ~itrosodiphenylamine                  Sal             10 I'I-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 I

Page 19 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                     #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233722 Units: IJg/L Analyst: RB Analvte Result PQL 4-Chloro-3-methylphenol SQl 20 2-Chlorophenol SQl 10 m & p-Cresol SQl 10 o-Cresol SQl 10 2,4-Dichlorophenol SQl 10

 .2.6-Dichlorophenol                   SQl         10
       -Dimethylphenol                 SQl         10
  '+ ,6-Dinitro-2-methylphenol         SQl        50 2,4-Dinitrophenol                    SQl        50 2-Nitrophenol                        SQl         10 4-Nitrophenol                        SQl        50 Pentachlorophenol                    SQl        50 Phenol                               SQl         10 2,3,4,6-Tetrachlorophenol            SQl         10 2,4,5-Trichlorophenol                SQl         10 2,4,6-Trichlorophenol                SQl         10 I -

Page 20 of 88

IA CL I ADVANCED CHEMISTRY LABS, INC. Phone: (770) 4~0~9-~1~44~4~-------------~3~03~9~A~m-w~i~le-r~R-oa-d~*~S~u~it-e~1O~O~.-A-t1-a-nt-a-,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 I Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                       #154                                 Date Received:        06/17/2005 Marietta, GA 30068-0000              Date Reported:        07/15/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C)

Appendix II Sample ID: GWC-13/MW-13 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233722 Units: IJg/L Analyst: RB Analyte Result PQL Analvte Result PQL Acenaphthene SQl 10 Dimethyl phthalate SQl 10 Acenaphthylene SQl 10 p-{Dimethylamino)azobenzene SQl 10 Acetophenone SQl 10 7,12-Dimethylbenz{a)anthracene SQl 10 2-Acetylaminofluorene SQl 20 3,3'-Dimethylbenzidine SQl 10 4-Aminobiphenyl SQl 20 m-Dinitrobenzene SQl 20

 ,..ADthracene                           SQl          10        2,4-Dinitrotoluene                  SQl              10 lzo{a)anthracene                SQl          10        2,6-Dinitrotoluene                  SQl              10 oenzo{a)pyrene                       SQl          10        Diphenylamine                       SQl              10 Senzo{b)f1uoranthene                 SQl          10        Disulfoton                          SQl              10 Senzo{g,h,i)perylene                 SQl          10        Ethyl methanesulfonate              SQl              20 Senzo{k)f1uoranthene                 SQl          10        Famphur                             SQl              20 Senzyl alcohol                       SQl          20        Fluoranthene                        SQl              10 Sis{2-chloroethoxy)methane           SQl          10        Fluorene                            SQl              10 Sis{2-chloroethyl)ether              SQl          10        Hexachlorobenzene                   SQl              10 Sis{2-chloroisopropyl)ether          SQl          10        Hexachlorobutadiene                 SQl              10 Sis{2-ethylhexyl)phthalate           SQl          10        Hexachlorocyclopentadiene           SQl              10 4-Sromophenyl phenyl ether           SQl          10        Hexachloroethane                    SQl              10 Sutyl benzyl phthalate               SQl          10        Hexachloropropene                   SQl              10 p-Chloroaniline                      SQl          20        Indeno{1,2,3-cd)pyrene              SQl              10 Chlorobenzilate                      SQl          10        Isodrin                             SQl              20 2-Chloronaphthalene                  SQl          10        Isophorone                          SQl              10 4-Chlorophenyl phenyl ether          SQl          10        Isosafrole                          SQl              10 Chrysene                             SQl          10        Kepone                              SQl              20 Di-n-butyl phthalate                 SQl          10        Methapyrilene                       SQl             100 Di-n-octyl phthalate                 SQl          10        Methyl methanesulfonate             SQl              10 Diallate                             SQl          10        Methyl parathion                    SQl              10 Dibenz(a,h)anthracene                SQl          10        3-Methylcholanthrene                Sal              10 Dibenzofuran                         SQl          10        2-Methylnaphthalene                 SQl              10 1,2-Dichlorobenzene                  SQl          10        Naphthalene                         SQl              10
  ,                                                                                                 SQl
         -Dichlorobenzene                SQl          10        1A-Naphthoquinone                                    10
    . ,-t-Dichlorobenzene                SQl          10        1-Naphthylamine                     SQl              10 3,3'-Dichlorobenzidine               SQl          20        2-Naphthylamine                     SQl              10 Diethyl phthalate                    SQl          10        5-Nitro-o-toluidine                 SQl              10 Dimethoate                           SQl          10        2-Nitroaniline                      SQl              50 Page 21 of 88

IA CL 1 Phone: (770) 409-1444 A_D_~_~_C_'E._'D_C_'Jl_"E_'M_Z_"S_TR_Y_LA_B_'S._,_IM_C._. 3039 Amwiler Road

Suite 100
Atlanta. GA 30360

- Fax: (770) 409-1844 e-mail: acl@acl-Iabs.net P.O. Box 88610* Atlanta. GA 30356 www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                    #154                                Date Received:    06/17/2005 Marietta, GA 30068-0000             Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C)

Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233722 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

~Nitrosodimethylamine                 Sal       10 Jitrosodiphenylamine             Sal       10 I,,-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 Satrole                              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 22 ot88

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                               Date Received:   06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample ID: GWA-15/MW-15 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233723 Units: IJg/L Analyst: RB Analvte 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

 ~-Dichlorophenol                    Sal         10
     -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 I --

Page 23 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                     #154                             Date Received:       06/17/2005 Marietta, GA 30068-0000          Date Reported:       07/15/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C)

Appendix II Sample ID: GWA-15/MW-15 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233723 Units: ,",gIL Analyst: RB Analvte 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 Sal 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene Sal 20

 .~thracene                            Sal        10     2,4-Dinitrotoluene                    Sal             10 lzo(a)anthracene                Sal        10     2,6-Dinitrotoluene                    Sal             10 Senzo(a)pyrene                       Sal        10     Diphenylamine                         Sal             10 Senzo(b)f1uoranthene                 Sal        10     Disulfoton                            Sal             10 Senzo(g.h,i)perylene                 Sal        10      Ethyl methanesulfonate               Sal            20 Senzo(k)f1uoranthene                 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 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
 ..l2-Dichlorobenzene                  Sal       10      Naphthalene                           Sal            10
       -Dichlorobenzene                Sal       10      1A-Naphthoquinone                     Sal            10
  .* A-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 24 of 88

ADVANCED CHEMISTRY LABS, INC. Phone: (170) 409-1444 3039 Amwiler Road

Suite 100
Atlanta, GA 30360 Fax: (170) 409-1844 P.O. Box 88610* Atlanta, GA 30356

- e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                    #154                            Date Received:    06/17/2005 Marietta, GA 30068-0000         Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C)

Appendix II Sample ID: GWA-15/MW-15 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233723 Units: jJg/L Analyst: RB Analvte Result PQL 3-N itroaniline sal 50 4-Nitroaniline sal 20 Nitrobenzene sal 10 N-N itroso-di-n-butylamine sal 10 N-Nitrosodiethylamine sal 20

.....bl:Nitrosodimethylamine sal 10

      ~itrosodiphenylamine            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                          SOL       10 1,2,4-Trichlorobenzene               sal       10 0,0,0- Triethyl phosphorothioate     sal      50 1,3,5-Trinitrobenzene                sal       10 Page 25 of 88

IA CL 1..........-- Phone: (770) 409-1444 Fax: (770) 409-1844

                                         ----A-D-~-~-N-C 'E.~'D-C-rn.-E-'M-ZS-TR-Y-LAB-'S.-,_IN_G._-

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                     #154                                   Date Received:    06/17/2005 Marietta, GA 30068-0000                Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Acid Extractables (8270C)

Appendix II Sample ID: GWC-13/MW-13 DUP Matrix: Water Date Sampled: 06/1312005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233726 Units: 1J9/L Analyst: RB Analvte 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
       -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 1

Page 26 of 88

IA CL 1 -----A-D-~-~-C'ED~C-rn.-E......'M-7S-T-'R-Y-LAB-S.-,_IM_G._. 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. LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                             Date Received:        06/17/2005 Marietta, GA 30068-0000         Date Reported:        07/15/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C)

Appendix II Sample 10: GWC-13/MW-13 DUP Matrix: Water Date Sampled: 06/13/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233726 Units: IJg/L Analyst: RB Analvte Result PQL Analvte Result PQL Acenaphthene SQl 10 Dimethyl phthalate SQl 10 Acenaphthylene SQl 10 p-(Dimethylamino)azobenzene SQl 10 Acetophenone SQl 10 7,12-Dimethylbenz(a)anthracene SQl 10 2-Acetylaminofluorene SQl 20 3,3'-Dimethylbenzidine SQl 10 4-Aminobiphenyl SQl 20 m-Dinitrobenzene SQl 20

~thracene SQl 10 2,4-Dinitrotoluene SQl 10 lZ0( a)anthracene SQl 10 2,6-Dinitrotoluene SQl 10 Senzo(a)pyrene 'SQl 10 Diphenylamine SQl 10 Senzo(b)f1uoranthene SQl 10 Disulfoton SQl 10 Senzo(g,h,i)perylene SQl 10 Ethyl methanesulfonate SQl 20 Senzo(k)f1uoranthene SQl 10 Famphur SQl 20 Senzyl alcohol SQl 20 Fluoranthene SQl 10 Sis(2-chloroethoxy)methane SQl 10 Fluorene SQl 10 Sis(2-chloroethyl)ether SQl 10 Hexachlorobenzene SQl 10 Sis(2-chloroisopropyl)ether SQl 10 Hexachlorobutadiene SQl 10 Sis(2-ethylhexyl)phthalate SQl 10 Hexachlorocyclopentadiene SQl 10 4-Sromophenyl phenyl ether SQl 10 Hexachloroethane SQl 10 Sutyl benzyl phthalate SQl 10 Hexachloropropene SQl 10 p-Chloroaniline SQl 20 Indeno(1.2,3-cd)pyrene SQl 10 Chlorobenzilate SQl 10 Isodrin SQl 20 2-Chloronaphthalene SQl 10 Isophorone SQl 10 4-Chlorophenyl phenyl ether SQl 10 Isosafrole SQl 10 Chrysene SQl 10 Kepone SQl 20 Di-n-butyl phthalate SQl 10 Methapyrilene SQl 100 Di-n-octyl phthalate SQl 10 Methyl methanesulfonate SQl 10 Diallate SQl 10 Methyl parathion SQl 10 Dibenz(a,h)anthracene SQl 10 3-Methylcholanthrene SQl 10 Dibenzofuran SQl 10 2-Methylnaphthalene SQl 10

.J.2-Dichlorobenzene                  SQl       10      Naphthalene                           SQl             10 1
      -Dichlorobenzene                SQl       10      1,4-Naphthoquinone                    SQl             10 I ,4-Dichlorobenzene                SQl       10      1-Naphthylamine                       SQl             10 3,3'-Dichlorobenzidine               SQl       20      2-Naphthylamine                       SQl             10 Diethyl phthalate                    SQl       10      5-Nitro-o-toluidine                   SQl             10 Dimethoate                           SQl       10      2-Nitroaniline                        SQl            50 Page 27 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                       #154                             Date Received:    06/17/2005 Marietta, GA 30068-0000          Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Base Neutra.1 Extractables (8270C)

Appendix II Sample 10: GWC-13/MW-13 DUP Matrix: Water Date Sampled: 06/1312005 Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: 233726 Units: 1J9/L Analyst: RB Analyte Result POL 3-Nitroaniline sal 50 4-Nitroaniline sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine sal 10 N-Nitrosodiethylamine sal 20

 ...w..Nitrosodimethylamine              sal        10 sal I

Jitrosodiphenylamine 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 I - Page 28 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                      #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Pesticides/PCBs (8081A18082) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/1312005 Date Extracted: 06/20/2005 Date Analyzed: 06/23/2005 ACL Sample #: 233722 Units: IJg/L Analyst: TM Analyte Result PQL Aldrin SQl 0.05 Arochlor-1016 SQl 0.50 Arochlor-1221 SQl 0.50 Arochlor-1232 SQl 0.50 Arochlor-1242 SQl 0.50

 .....Arochlor-1248                      SQl       0.50
       )chlor-1254                       SQl       0.50 Arochlor-1260                        SQl       0.50 a-SHC                                SQl       0.05 b-SHC                                SQl       0.05 d-SHC                                SQl       0.05 g-SHC                                SQl       0.05 Chlordane                            SQl       0.10 4,4'-DDD                             SQl       0.05 4,4'-DDE                             SQl       0.05 4,4'-DDT                             SQl       0.05 Dieldrin                             SQl       0.05 Endosulfan I                         SQl       0.05 Endosulfan "                         SQl       0.05 Endosulfan sulfate                   SQl       0.05 Endrin                               SQl       0.05 Endrin aldehyde                      SQl       0.05 Heptachlor                           SQl       0.05 Heptachlor epoxide                   SQl       0.05 Methoxychlor                         SQl       0.05 Toxaphene                             SQl       2.00 Page 29 of 88

IA CL 1.........--~ Phone: (770) 409-1444 AD_~_~_C__'E........'D~c_rn._E.'M_Z_"S_TR_Y_LAB_'S._,_IM_G._" 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                     #154                               Date Received:          06/17/2005 Marietta, GA 30068-0000            Date Reported:          07/15/2005

Contact:

Mr. Kurt Batsel Pesticides/PCBs (8081A18082)* Appendix II Sample ID: GWA-15/MW-15 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/23/2005 ACL Sample #: 233723 Units: IJg/L Analyst: TM Analvte Result PQL Aldrin SQl 0.05 Arochlor-1016 SQl 0.50 Arochlor-1221 SQl 0.50 Arochlor-1232 SQl 0.50 Arochlor-1242 SQl 0.50

 ...Acochlor-1248                       SQl       0.50 Ichlor-1254                       SQl       0.50 Arochlor-1260                        SQl       0.50 a-SHC                                SQl       0.05 b-SHC                                SQl      0.05 d-SHC                                SQl      0.05 g-SHC                                SQl      0.05 Chlordane                            SQl      0.10 4,4'-000                             SQl      0.05 4,4'-00E                             SQl       0.05 4,4'-00T                             SQl      0.05 Dieldrin                             SQl      0.05 Endosulfan I                         SQl      0.05 Endosulfan II                        SQl      0.05 Endosulfan sulfate                   SQl      0.05 Endrin                               SQl      0.05 Endrin aldehyde                      SQl      0.05 Heptachlor                           SQl      0.05 Heptachlor epoxide                   SQl      0.05 Methoxychlor                         SQl      0.05 Toxaphene                            SQl      2.00 I --

Page 30 of 88

IA CL I ADVANCED CHEMISTRY LABS, INC. Phone: (770) 4~09~-~14~4~4--------------3~0~3~9~A-m-W~i1e-r"""'R""o-ad~.S....u...it-e-10

                                                                                              ....0-.-A...u-an-ta-.-G~A--30. .3 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, LLC              Client Proj #:     Plant Vogtle 4665 Lower Roswell Road            ACL Project #:    48231
                  #154                               Date Received:    06/17/2005 Marietta, GA 30068*0000            Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Pesticides/PCBs (8081A18082)* Appendix II Sample ID: GWC-13/MW-13 DUP Matrix: Water Date Sampled: 06/1312005 Date Extracted: 06/20/2005 Date Analyzed: 06/23/2005 ACL Sample #: 233726 Units: ~g/L Analyst: TM 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 ~ochlor-1248 sal 0.50

   )chlor-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'-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 31 of 88

ADVANCED CHEMISTRY LABS, INC. Phone: (770) 409-1444 3039 Amwiler Road

Suite 100
Atlanta. GA 30360

- Fax: (770) 409-1844 e-mail: acl@acl-Iabs.net P.O. Box 88610* Atlanta. GA 30356 www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACl Project #: 48231

                 #154                             Date Received:    06/17/2005 Marietta, GA 30068-0000          Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/13/2005 ACl Sample #: 233722 Units: IJg/L Analyst: TM Analvte Result PQl 2,4-D SQl 1.0 Dinoseb SQl 1.0 2,4,5-TP (Silvex) SQl 1.0 2,4,5-T SQl 1.0 Page 32 of 88

IA CL 1~~ A_D_~_~_C'E.....'D__c_rn._"E.......'M_Z_S_TR_Y_LAB_'S.__,_INi_G._" 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. LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                            Date Received:      06/17/2005 Marietta, GA 30068-0000         Date Reported:      07/15/2005

Contact:

Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II Sample ID: GWA-15/MW-15 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 07/13/2005 ACL Sample #: 233723 Units: ~g/L Analyst: TM Analvte Result PQL 2,4-D SQl 1.0 Dinoseb SQl 1.0 2,4,5-TP (Silvex) SQl 1.0 2,4,5-T SQl 1.0 I -- Page 33 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                            Date Received:    06/17/2005 Marietta, GA 30068-0000         Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II Sample 10: GWC-13/MW-13 DUP Matrix: Water Date Sampled: 06/1312005 Date Extracted: 06/20/2005 Date Analyzed: 07/13/2005 ACL Sample #: 233726 Units: IJg/L Analyst: TM Analvte Result PQL 2,4-D BQL 1.0 Dinoseb BQL 1.0 2,4,5-TP (Silvex) BQL 1.0 2,4,5-T BQL 1.0 I Page 34 of 88

IACLI Phone: (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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACl Project #: 48231

                 #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample ID: GWA-2/MW-2 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/20/2005 ACl Sample #: 233715 Units: lJ9/L Analyst: TM Analvte Result Pgl 1,2-Dibromo-3-chloropropane BQL 0.20 1,2-Dibromoethane BQL 0.05 Page 35 of 88

IACLI Phone: (770) 409-1444 Fax: (770) 409-1844 ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant VogUe 4665 Lower Roswell Road ACl Project #: 48231

                  #154                             Date Received:    06/17/2005 Marietta, GA 30068-0000          Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011)

Appendix II Sample ID: GWC-3/MW-3 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/20/2005 ACl Sample #: 233716 Units: ~g/L Analyst: TM Analyte Result Pgl 1,2-Dibromo-3-chloropropane BQl 0.20 1,2-Dibromoethane BQl 0.05 Page 36 of 88

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, LLC             Client Proj #:    Plant Vogtle 4665 Lower Roswell Road           ACL Project #:    48231
                   #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011)

Appendix II Sample ID: GWB-4/MW-4 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/20/2005 ACL Sample #: 233717 Units: IJg/L Analyst: TM Analvte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 I

Page 37 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                 #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011)

Appendix II Sample 10: GWC-11/MW-11 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/20/2005 ACL Sample #: 233718 Units: IJg/L Analyst: TM Analvte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 I

Page 38 of 88

IA CL 1~~ Phone: (770) 409-1444 A_D_~_~_C.......'E~'D~C~rn~E""""",,"'M_z.S_TR_Y_LAB 3039 Amwiler Road* Suite 100* Atlanta. GA 30360 INi

                                                                                                           'S...-,__ __G._.

- Fax: (770) 409-1844 e-mail: acl@acl-Iabs.net P.O. Box 88610* Atlanta. GA 30356 www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

               #154                                Date Received:           06/17/2005 Marietta, GA 30068-0000             Date Reported:           07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011)

Appendix II Sample ID: GWC-5/MW-5 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/20/2005 ACL Sample #: 233719 Units: IJg/L Analyst: TM Analyte Result PQL 1,2-Dibromo-3-chloropropane SOL 0.20 1,2-Dibromoethane SOL 0.05 Page 39 of 88

IA CL I ADVANCED CHEMISTRY LABS, INC. Phone: (770) 4~09=--~14~4~4-------------3~0~3~9~Am-w~i1e-r~R-oa-d~.~S~ui~te-1""O""O-.A~tJ~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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                 #154                              Date Received:     06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWB-6/MW-6 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/21/2005 ACL Sample #: 233720 Units: IJg/L Analyst: TM Analvte Result PQL 1,2-Dibromo-3-chloropropane SQL 0.20 1.2-Dibromoethane SQL 0.05 Page 40 ot88

IACLI Fax: (770) 409-1844 ADVANCED CHEMISTRYLABS, INC. Phone: (770) 4~09=--":""14':"":4~4-------------3~0~3~9~Am-w~i1e-r"=R-oa-d~*~S-ui~te-1~0~0-. A~U~a-nta~.G=-A~30~3~6~0-P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                  #154                                   Date Received:     06/17/2005 Marietta, GA 30068-0000                Date Reported:     07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/21/2005 ACL Sample #: 233721 Units: IJg/L Analyst: TM Analvte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 I Page 41 of 88

IACL I ADVANCED CHEMISTRYLABS. INC. Phone: (770) 4~09:-_":""14~4"":"4-------------3~0~3~9~Am-w~i1e-r~R-oa-d~*~S~ui~te-1~0~0-.A~t~la-nta~.G~A~30~3""6 - Fax: (770) 409-1844 e-mail: acl@acl-Iabs.net P.O. Box 88610* Atlanta. GA 30356 www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                             Date Received:    06/17/2005 Marietta, GA 30068-0000          Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011)

Appendix II Sample ID: GWC-13/MW-13 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/21/2005 ACL Sample #: 233722 Units: ~g/L Analyst: TM Analyte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 I--

Page 42 ot88

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, LLC             Client Proj #:    Plant Vogtle 4665 Lower Roswell Road           ACL Project #:    48231
                    #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 06/1412005 Date Extracted: 06/20/2005 Date Analyzed: 06/21/2005 ACL Sample #: 233723 Units: IJg/L Analyst: TM Analvte Result PQL 1,2-Dibromo-3-chloropropane SOL 0.20 1,2-Dibromoethane SOL 0.05 I - Page 43 of 88

ADVANCED CHEMISTRY LABS, INC. Phone: (770) 409-1444 3039 Amwiler Road* Suite 100

Atlanta. GA 30360

 --     Fax: (770) 409-1844 e-mail: acl@acl-Iabs.net P.O. Box 88610* Atlanta. GA 30356 www.advancedchemistrylabs.com Client:          The Dextra Group, LLC           Client Proj #:    Plant Vogtle 4665 Lower Roswell Road         ACL Project #:    48231
                   #154                            Date Received:    06/17/2005 Marietta, GA 30068-0000         Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWC-17/MW-17 Matrix: Water Date Sampled: 06/15/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/21/2005 ACL Sample #: 233724 Units: ~g/L Analyst: TM Analvte Result PQL 1,2-Dibromo-3-chloropropane SOL 0.20 1,2-Dibromoethane SOL 0.05 I - Page 44 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWC-18/MW-18 Matrix: Water Date Sampled: 06115/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/21/2005 ACL Sample #: 233725 Units: IJg/L Analyst: TM Analvte Result PQL 1,2-0ibromo-3-chloropropane Sal 0.20 1,2-0ibromoethane Sal 0.05 Page 45 of 88

ADVANCED CHEMISTRY LABS, INC. pel e"'on~;J770)409-1444 3039 Amwiler Road

Suite 100
Atlanta. GA 30360

         ~ax!~'fIo) 409-1844                                                     P.O. Box 88610* Atlanta. GA 30356
 -       e-ml:!itb~@ii1~I-~~et                                                    www.advancedchemistrylabs.com I

Error: IllegalOperatorSequence Client: operatifrf:le rn~tpI3I@roup, LLC Client Proj #: Plant Vogtle Positi~65a~er Roswell Road ACL Project #: 48231

                    #154                                  Date Received:    06/17/2005 Marietta, GA 30068-0000               Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011)

Appendix II Sample ID: GWC-13/MW-13DUP Matrix: Water Date Sampled: 06/13/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/21/2005 ACL Sample #: 233726 Units: IJg/L Analyst: TM Analvte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 46 of 88

IA CL 1~~ Phone: (770) 409-1444 Fax: (770) 409-1844 AD_v.;_~_C~'E.~'D~c~rn~E~'M~'L~'S~TR~Y~LA_B_'S.~,~IM ........C. . ... . 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                 #154                               Date Received:    06/17/2005 Marietta, GA 30068-0000            Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011)

Appendix II Sample ID: EQ Blank Matrix: Water Date Sampled: 06/15/2005 Date Extracted: 06/20/2005 Date Analyzed: 06/21/2005 ACL Sample #: 233727 Units: ~g/L Analyst: TM Analyte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 r

Page 47 of 88

IA CL I~~ Phone: (770) 409-1444 A~D_~_~_C~'E.~'D~C_'H~E"""""",,'M_Z~S.......TRY __LA_B_'S.~,_IN_C._. 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, LLC             Client Proj #:      Plant Vogtle 4665 Lower Roswell Road           ACL Project #:     48231
                       #154                              Date Received:     06/17/2005
                      *Marietta, GA 30068-0000           Date Reported:     07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample ID: GWA-2/MW-2 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233715 Units: mg/L Analyst: SW/AD Analvte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Sarium 0.021 0.020 Seryllium Sal 0.004 Cadmium Sal 0.005

   ..Qromium                             Sal    0.020 I
        )alt                             Sal    0.050 vopper                               Sal    0.020 lead                                 Sal    0.010 Nickel                               Sal    0.020 Selenium                             Sal    0.040 Silver                               Sal    0.010 Thallium                             Sal    0.002 Vanadium                             Sal    0.050 Zinc                                 Sal    0.020 I -

Page 48 of 88

IA CL I~~ Phone: (770) 409-1444 A_D_~_~_C......'E.~'D~C_'H~E."""""",,'M~Z'S__TR_Y LAB_S.~,_IN_C._. 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, LLC            Client Proj #:          Plant Vogtle 4665 Lower Roswell Road          ACL Project #:          48231
                      #154                             Date Received:          06/17/2005 Marietta. GA 30068-0000          Date Reported:          07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample 10: GWC-3/MW-3 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233716 Units: mg/L Analyst: SW/AD Analvte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Sarium Sal 0.020 Seryllium Sal 0.004 Cadmium Sal 0.005

  ..,C!1romium                          Sal    0.020 Jalt                             Sal    0.050 vopper                              Sal    0.020 lead                                Sal    0.010 Nickel                              Sal    0.020 Selenium                            Sal    0.040 Silver                              Sal    0.010 Thallium                            Sal    0.002 Vanadium                            Sal    0.050 Zinc                                Sal    0.020 Page 49 of 88

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                             Date Received:   06/17/2005 Marietta, GA 30068-0000         Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample ID: GWB-4/MW-4 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233717 Units: mg/L Analyst: SW/AD Analvte Result PQL Antimony SQl 0.006 Arsenic SQl 0.010 Sarium 0.042 0.020 Beryllium SQl 0.004 Cadmium BQl 0.005

 ~romium                             BQl    0.020
     )alt                            BQl    0.050 vopper                              BQl    0.020 lead                               SQl    0.010 Nickel                             SQl    0.020 Selenium                            SQl    0.040 Silver                              SQl    0.010 Thallium                            SQl    0.002 Vanadium                            BQl    0.050 Zinc                               0.029   0.020 I

Page 50 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                  #154                             Date Received:   06/17/2005 Marietta, GA 30068-0000          Date Reported:   07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample 10: GWC-11/MW-11 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233718 Units: mg/L Analyst: SW/AD Analvte Result PQL Antimony SQl 0.006 Arsenic SQl 0.010 Sarium 0.034 0.020 Seryllium SQl 0.004 Cadmium SQl 0.005 Chromium

   'Jail SQl SQl 0.020 0.050 v0pper                              SQl    0.020 lead                                SQl    0.010 Nickel                               SQl   0.020 Selenium                             SQl   0.040 Silver                              SQl    0.010 Thallium                            SQl    0.002 Vanadium                            SQl    0.050 Zinc                               0.025   0.020 Page 51 of 88

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, LLC           Client Proj #:    Plant Vogtle 4665 Lower Roswell Road         ACL Project #:    48231
                         #154                             Date Received:    06/17/2005 Marietta, GA 30068-0000          Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample 10: GWC-5/MW-5 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233719 Units: mg/L Analyst: SW/AD Analvte Result PQL Antimony SQl 0.006 Arsenic SQl 0.010 Sarium SQl 0.020 Seryllium SQl 0.004 Cadmium SQl 0.005

 ,..G./:l rami um                          SQl    0.020
          ':>alt                           SQl    0.050 L-opper                                SQl    0.020 lead                                   SQl    0.010 Nickel                                 SQl    0.020 Selenium                               SQl    0.040 Silver                                 SQl    0.010 Thallium                               SQl    0.002 Vanadium                               SQl    0.050 Zinc                                   SQl    0.020 I  -

Page 52 of 88

IA CL I ADVANCED CHEMISTRY LABS, INC. Phone: (770) 4~09~-~14~4~4--------------~30""'3~9~A-m-w~iI-er""R""o-a-d-. S

                                                                                    ....u-it-e-1-00-.-A..u-a-nta-.-G..;A-30-3-6           Fax: (770) 409-1844                                                  P.O. Box 88610* Atlanta. GA 30356
-        e-mail: acl@acl-Iabs.net                                               www.advancedchemistrylabs.com Client:           The Dextra Group. LLC               Client Proj #:    Plant VogUe 4665 Lower Roswell Road             ACL Project #:    48231
                    #154                                Date Received:    06/17/2005 Marietta. GA 30068-0000             Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample 10: GWB-6/MW-6 Matrix: Water Date Sampled: 06/13/2005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233720 Units: mg/L Analyst: SW/AD Analvte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Sarium Sal 0.020 Seryllium Sal 0.004 Cadmium Sal 0.005 Jalromium Sal 0.020 Jalt Sal 0.050

  ,-,opper                            Sal      0.020 lead                                Sal      0.010 Nickel                              Sal      0.020 Selenium                            Sal      0.040 Silver                              Sal      0.010 Thallium                            Sal      0.002 Vanadium                            Sal      0.050 Zinc                                Sal      0.020 Page 53 of 88

iA CL I ADVANCED CHEMISTRY LABS, INC. Phone: (770) 4~09~-~14~4~4-------------~30~3~9~A-m-w~i1-er~R~o-a~d -.S~u~it-e-1""OO~*~A~tl~a~nta-,~G~A~30~3""6~0-

.-      Fax: (770) 409-1844 e-mail: acl@acl-Iabs.net P.O. Box 88610* Atlanta, GA 30356 www.advancedchemistrylabs.com Client:           The Dextra Group, LLC            Client Proj #:     Plant Vogtle 4665 Lower Roswell Road          ACL Project #:    48231
                   #154                             Date Received:    06/17/2005 Marietta, GA 30068-0000          Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel AppendiX I Metals (60108/7841/7041) Sample ID: GWA-7/MW-7 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233721 Units: mg/L Analyst: SW/AD Analyte Result PQL Antimony SOL 0.006 Arsenic SOL 0.010 Sarium SOL 0.020 Seryllium SOL 0.004 Cadmium SOL 0.005 J:.Qromium SOL 0.020

     )alt                            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 I

Page 54 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                  #154                             Date Received:    06/17/2005 Marietta, GA 30068-0000          Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample ID: GWC-17/MW-17 Matrix: Water Date Sampled: 06/15/2005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233724 Units: mg/L Analyst: SW/AD Analvte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Barium BOl 0.020 Beryllium BOl 0.004 Cadmium Sal 0.005 ~hromium BOl 0.020 bait BOl 0.050

""opper                             Sal    0.020 lead                                BOl    0.010 Nickel                              Sal    0.020 Selenium                            Sal    0.040 Silver                              Sal    0.010 Thallium                            Sal    0.002 Vanadium                            BOl    0.050 Zinc                                Sal    0.020 f-Page 55 of 88

IACLI ADVANCED CHEMISTRY LABS, INC. Phone: (770) 4~09=--~14~4:-:'4-------------~30~3~9~A-m-w~i1e-r~R~o-ad~. S=-u~it-e~10~0~.~A~tl~an~ta-,~G~A~30~3~6~0-

-        Fax: (770) 409-1844 e-mail: acl@acl-Iabs.net P.O. Box 88610

Atlanta, GA 30356 www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                    #154                               Date Received:    06/17/2005 Marietta, GA 30068-0000            Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample ID: GWC-18/MW-18 Matrix: Water Date Sampled: 06/1512005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233725 Units: mg/L Analyst: SW/AD Analvte Result PQL Antimony BOL 0.006 Arsenic BOL 0.010 Barium BOL 0.020 Beryllium BOL 0.004 Cadmium BOL 0.005 ,;:;.bromium BOL 0.020 Jalt BOL 0.050 l"opper BOL 0.020 Lead BOL 0.010 Nickel BOL 0.020 Selenium BOL 0.040 Silver BOL 0.010 Thallium BOL 0.002 Vanadium BOL 0.050 Zinc BOL 0.020 Page 56 of 88

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, LLC            Client Proj #:    Plant Vogtle 4665 Lower Roswell Road         ACL Project #:     48231
                     #154                             Date Received:    06/17/2005 Marietta, GA 30068-0000          Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample 10: EO Blank Matrix: Water Date Sampled: 06/1512005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233727 Units: mg/L Analyst: SW/AD Analvte Result POL Antimony Sal 0.006 Arsenic Sal 0.010 Sarium Sal 0.020 Seryllium Sal 0.004 Cadmium Sal 0.005 Aromium Sal 0.020 0.050 I

>alt Sal

   \,;opper                            Sal     0.020 lead                                 Sal    0.010 Nickel                               Sal    0.020 Selenium                             Sal    0.040 Silver                               Sal    0.010 Thallium                             Sal    0.002 Vanadium                            Sal     0.050 Zinc                                Sal     0.020 Page 57 of 88

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 I Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                      #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix II Metals (6010B/7470Al7841/7041) Sample ID: GWC-13/MW-13 Matrix: Water Date Sampled: 06/1312005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233722 Units: mg/L Analyst: SW/AD/..IR Analvte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Sarium 0.028 0.020 Seryllium SQl 0.004 Cadmium Sal 0.005

 .Q1romium                               Sal      0.020
       'Jalt                             Sal     0.050
   ,-,opper                              Sal     0.020 lead                                  SOL      0.010 Mercury                               Sal     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                                 0.020    0.020 Page 58 of 88

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                    #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix II Metals (6010B/7470Al7841/7041) Sample ID: GWA-15/MW-15 Matrix: Water Date Sampled: 06/14/2005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233723 Units: mg/L Analyst: SW/AD/JR Analyte Result PQL Antimony BOL 0.006 Arsenic BOL 0.010 Barium BOL 0.020 Beryllium BOL 0.004 Cadmium SOL 0.005

~romium                               SOL     0.020 bait                            SOL     0.050
  ~opper                              BOL     0.020 Lead                                SOL     0.010 Mercury                             SOL     0.0005 Nickel                              BOL     0.020 Selenium                            BOL     0.040 Silver                              SOL     0.010 Thallium                            SOL     0.002 Tin                                 BOL     0.025 Vanadium                            SOL     0.050 Zinc                               0.029    0.020 I

Page 59 of 88

ADVANCED CHEMISTRYLABS, 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                    #154                              Date Received:    06/17/2005 Marietta, GA 30068-0000           Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix II Metals (6010B/7470Al7841/7041) Sample 10: GWC-13/MW-13 DUP Matrix: Water Date Sampled: 06/1312005 Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: 233726 Units: mg/L Analyst: SW/AD/.JR Analvte Result PQL Antimony BOl 0.006 Arsenic BOl 0.010 Barium 0.031 0.020 Beryllium BOl 0.004 Cadmium BOl 0.005 .....,Chromium BOl 0.020 bait BOl 0.050 Gopper BOl 0.020 lead BOl 0.010 Mercury BOl 0.0005 Nickel BOl 0.020 Selenium BOl 0.040 Silver BOl 0.010 Thallium BOl 0.002 Tin BOl 0.025 Vanadium BOl 0.050 Zinc BOl 0.020 Page 60 of 88

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, llC Client Proj #: Plant Vogtle 4665 lower Roswell Road ACL Project #: 48231

                #154                                 Date Received:   06/17/2005 Marietta, GA 30068-0000             Date Reported:    07/15/2005

Contact:

Mr. Kurt Satsel Date Sample 10 ACL# Analvte Matrix Result PQL Units Analyzed GWA-7/MW-7 233721 Cyanide (9012A) Water Sal 0.020 mg/l 06/24/2005 GWC-13/MW-13 233722 Cyanide (9012A) Water Sal 0.020 mg/l 06/24/2005 GWA-15/MW-15 233723 Cyanide (9012A) Water Sal 0.020 mg/l 06/24/2005 GWC-13/MW-13 D 233726 Cyanide (9012A) Water Sal 0.020 mg/l 06/24/2005 GWC-5/MW-5 233719 Mercury (7470A) Water Sal 0.0005 mgll 06/22/2005

   'S-6/MW-6         233720        Mercury (7470A)        Water       Sal       0.0005     mg/l          06/22/2005 GWA-7/MW-7            233721        Mercury (7470A)        Water       Sal       0.0005     mg/l          06/22/2005 GWC-17/MW-17          233724        Mercury (7470A)        Water       Sal       0.0005     mg/l          06/2212005 GWC-18/MW-18          233725        Mercury (7470A)        Water       Sal       0.0005     mg/l          06/22/2005 EO Siank              233727        Mercury (7470A)        Water       Sal       0.0005     mg/l          06/22/2005 GWA-7/MW-7            233721        Sulfide (9034)         Water       Sal           1.0    mg/l          06/20/2005 GWC-13/MW-13          233722        Sulfide (9034)         Water       Sal           1.0    mg/l          06/20/2005 GWA-15/MW-15          233723        Sulfide (9034)         Water       Sal           1.0    mg/l          06/20/2005 GWC-13/MW-13 D 233726               Sulfide (9034)         Water       Sal           1.0    mg/l          06/20/2005 Page 61 of 88

QUALITY CONTROL Page 62 of 88

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 I

Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                     #154                                 Date Received:      06/17/2005 Marietta, GA 30068-0000              Date Reported:      07/15/2005

Contact:

Mr. Kurt Batsel V.O. (5030B/8260B) - Appendix I SURROGATE PERCENT RECOVERY

SUMMARY

Water Oibromofluoromethane 1,2-0ichloroethane-d4 Toluene-d8 4-Bromofluorobenzene (77-137) (72-138) (84-112) (77-125) ACL Sample # 233715 98 107 103 96 233716 102 104 101 96 233717 98 105 103 96 233718 102 103 101 96 233719 105 110 101 98 233720 98 107 100 93 233721 100 106 101 91 233724 105 109 101 94 233725 103 103 100 92 233727 109 110 99 91

  ** Matrix Interference DO=Diluted Out Page 63 of 88

IACL! Fax: (770) 409-1844 ADVANCED CHEMISTRYLABS, INC. Phone: (770) 4":'09~-"":'1"":"44~4~-------------~30~3~9-:A~m-w-:i~le-r-:='R-oa-d~.-:S~u~it~e-:1~0~0-.A~tl~a-n-ta-,-::G"":'A~30~3""6 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                     #154                                          Date Received:        06/17/2005 Marietta, GA 30068-0000                       Date Reported:        07/15/2005

Contact:

Mr. Kurt Batsel V.D. (5030B/8260B)

Appendix I Sample 10: ----------- Matrix: Water Date Sampled: -----------

Date Extracted: Date Analyzed: 06/22/2005 ACl Sample #: Blank Units: ~g/L Analyst: RP Analyte Result PQl Analyte 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
       )moform
   ,-,arbon disulfide Sal Sal Sal 5

5 5 Toluene 1,1,1-Trichloroethane 1,1 ,2-Trichloroethane Sal sal sal 5 5 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-Xylenes sal 10 1,2-Dibromoethane sal 5 o-Xylene Sal 5 trans-1,4-Dichloro-2-butene sal 10 1,2-Dichlorobenzene sal 5 1,4-Dichlorobenzene sal 5 1,1-Dichloroethane sal 5 1,2-Dichloroethane sal 5 1,1-Dichloroethene sal 5 cis-1,2-Dichlbroethene 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 '-'ethyl chloride Sal 10

   .Iethyl ethyl ketone                  Sal          100 Methyl iodide                          Sal           5 4-Methyl-2-pentanone                   sal          50 Methylene bromide                      Sal           5 Methylene chloride                     Sal           5 Page 64 of 88

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                                  Date Received:      06/17/2005 Marietta, GA 30068-0000              Date Reported:      07/15/2005

Contact:

Mr. Kurt Batsel V.O. (50308/82608)

Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene (77-137) (72-138) (84-112) (77-125) ACL Sample # 233722 101 109 102 93 233723 106 106 101 90 233726 106 107 99 93 233728 102 106 101 90

 ** Matrix Interference DO=Diluted Out Page 65 of 88

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, LLC Client Proj #: Plant VogUe 4665 Lower Roswell Road ACL Project #: 48231

                      #154                               Date Received:         06/17/2005 Marietta, GA 30068-0000            Date Reported:         07/15/2005

Contact:

Mr. Kurt Batsel V.O. (5030B/8260B) - Appendix II Sample 10: ._--------- Matrix: Water Date Sampled: ----------- Date Extracted: Date Analyzed: 06/22/2005 ACL Sample #: Blank Units: 1J9/L Analyst: RP Analyte Result PQL Analvte Result PQL Acetone Sal 100 Ethyl methacrylate Sal 10 Acetonitrile Sal 100 Ethyl benzene Sal 5 Acrolein Sal 100 2-Hexanone Sal 50 Acrylonitrile Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile Sal 100

 -7nzene                                 Sal       5         Methyl bromide                        SOL          10
      .-omochloromethane                 Sal       5         Methyl chloride                       SOL          10 Sromodichlorometha ne                Sal       5         Methyl ethyl ketone                   Sal         100 Sromoform                            Sal       5         Methyl iodide                         SOL           5 Carbon disulfide                     Sal       5         Methyl methacrylate                   Sal          30 Carbon tetrachloride                 Sal       5         4-Methyl-2-pentanone                  Sal          50 Chlorobenzene                        Sal       5         Methylene bromide                     SOL           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             SOL          5 trans-1 A-Dichloro-2-butene           SOL      10        Tetrachloroethene                      Sal          5 1,2-Dichlorobenzene                   Sal      5         Toluene                                SOL          5 1,3-Dichlorobenzene                   SOL      5         1,1,1-Trichloroethane                  SOL          5 1A-Dichlorobenzene                   Sal       5         1,1,2-Trichloroethane                  Sal          5 Dichlorodifluoromethane               Sal      5         Trichloroethene                        SOL          5 1,1-Dichloroethane                   Sal       5         Trichlorofluoromethane                 SOL          5 1,2-Dichloroethane                   Sal       5         1,2,3-Trichloropropane                 SOL          5 1,1-Dichloroethene                   SOL       5         Vinyl acetate                         Sal          50 cis-1,2-Dichloroethene                Sal       5         Vinyl chloride                        SOL           2 trans-1,2-Dichloroethene              Sal       5         m & p-Xylenes                         SOL          10

,...- 2-Dichloropropane Sal 5 o-Xylene Sal 5

     ,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 66 of 88

ADVANCED CHEMISTRY LABS, INC. GC/MS UNIT # 3

 -                     WATER VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECO'{ERY Sequence Date:               06-22-05 Matrix Spike - Sample No.:            233715-1 18.83 SPIKE            SAMPLE                MS              MS          QC.

ADDED CON CENTRATION COI\JCENTRATION % LIMITS COMPOUND (lJg/L) (lJg/L) (lJg/L) REC # REC. 1,1-dichloroethene 20.0 0.0 19.1 96 (54-144) benzene 20.0 0.0 17.4 87 (82-132) trichloroethene 20.0 0.0 17.6 88 (73-128) toluene 20.0 0.0 17.8 89 (83-130) chlorobenzene 20.0 0.0 17.7 88 (82-123) 21 SPIKE MSD MSD ADDED CONCENTRATION % % QC LIMITS COMPOUND (lJg/L) (lJg/L) REC # RPD # RPD REC. 1,1-dichloroethene 20.0 20.4 102 6 14 (54-144) benzene 20.0 18.2 91 5 14 (82-132) trichloroethene 20.0 17.1 85 3 14 (73-128) toluene 20.0 18.3 91 2 13 (83-130) chlorobenzene 20.0 19.2 96 9 13 (82-123)

   # 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:

I Page 67 of 88

IA CL I~~ Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_~_~_N_C~'E.~'D~C~'H~E.~'M~Z~"S~TR~Y~LAB~'S.~,~IN~C.~. 3039 Amwiler Road* Suite 100* AUanta. GA 30360 P.O. Box 88610* AUanta. GA 30356 _ e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                    #154                                  Date Received:      06/17/2005 Marietta, GA 30068-0000               Date Reported:      07/15/2005

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 # 233721 19 28 63 233722 45 60 51 - 233723 233726 63 15 83 33 118 100

 ** Matrix Interference DO=Diluted Out Page 68 of 88

IA CL I Phone: (770) 409-1444 Fax: (770) 409-1844

                               ----A-D-VAN_C_'E._V_c_rn._"E_'M_IS_T_'R_Y_LA_B_'S_,_IN_C_.

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                 #154                              Date Received:     06/17/2005 Marietta, GA 30068-0000           Date Reported:     07/15/2005

Contact:

Mr. Kurt Batsel Acid Extractables (8270C)

Appendix II Sample ID: Matrix: Water Date Sampled:

Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACL Sample #: Blank Units: IJg/L Analyst: RB Analyte Result PQL 4-Chloro-3-methylphenol SQl 20 2-Chlorophenol SQl 10 m & p-Cresol SQl 10 o-Cresol SQl 10 2,4-Dichlorophenol SQl 10 ,~ 6-Dichlorophenol SQl 10 4-Dimethylphenol SQl 10 4,6-Dinitro-2-methylphenol SQl 50 2,4-Dinitrophenol SQl 50 2-Nitrophenol SQl 10 4-Nitrophenol SQl 50 Pentachlorophenol SQl 50 Phenol SQl 10 2,3,4,6-Tetrachlorophenol SQl 10 2,4,5-Trichlorophenol SQl 10 2,4,6-Trichlorophenol SQl 10 Page 69 of 88

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 r Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                      #154                                  Date Received:      06/17/2005 Marietta, GA 30068-0000               Date Reported:      07/15/2005

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# 233721 92 82 124 233722 102 106 127 233723 112 95 91 , >-- 233726 99 106 109

   ** Matrix Interference DO=Diluted Out Page 70 0188

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-Jabs.net wwyi.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACl Project #: 48231

                      #154                             Date Received:        06/17/2005 Marietta, GA 30068-0000          Date Reported:        07/15/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C)

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

Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACl Sample #: Blank Units: IJg/l Analyst: RB Analyte Result pal Analyte Result pal 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

~-

nthracene Sal 10 2A-Dinitrotoluene Sal 10 denzo(a)anthracene Sal 10 2,6-Dinitrotoluene Sal 10 Senzo(a)pyrene Sal 10 Diphenylamine Sal 10 Senzo(b)fJuoranthene Sal 10 Disulfoton Sal 10 Senzo(g,h,i)perylene Sal 10 Ethyl methanesulfonate Sal 20 Senzo(k)f1 uora nthene 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 SOL 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 SOL 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 SOL 10 Dibenz(a,h)anthracene Sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran Sal 10 2-Methylnaphthalene Sal 10 , ---t ,2-Dichlorobenzene Sal 10 Naphthalene Sal 10

    , ,3-Dichlorobenzene                Sal     10        1A-Naphthoquinone                    Sal          10 1A-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 71 of 88

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                  #154                            Date Received:     06/17/2005 Marietta, GA 30068-0000         Date Reported:     07/15/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C)

Appendix II Sample 10: Matrix: Water Date Sampled:

Date Extracted: 06/20/2005 Date Analyzed: 06/27/2005 ACl Sample #: Blank 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 Nitrosodimethylamine

.i-Nitrosodiphenylamine Sal Sal Sal 20 10 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 72 of 88

 -                                       ADVANCED CHEMISTRY LABS, INC.

SEMI-VOL GC/MS UNIT # 4 ACID EXTRACTABLES (8270C) WATER SEMI-VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Sequence Date: 06-25-05 Matrix Spike - Sample No.: LCS062005 SPIKE SAMPLE MS MS ac. COMPOUND ADDED CONCENTRATION CONCENTRATION % LIMITS (lJg/L) (lJg/L) (lJg/L) REC # REC. Pentachlorophenol 200 0 66 33.0 (9-103) Phenol 200 0 72 36.0 (12-89) 2-Chlorophenol 200 0 177 88.5 (27-123) 4-Ch loro-3-methyl phenol 200 0 168 84.0 (23-97) 4-Nitrophenol 200 0 56 28.0 (10-80)

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

Pentachlorophenol 200 67 33.5 1.5 50 (9-103) Phenol 200 75 37.5 4.1 42 (12-89) 2-Chlorophenol 200 151 75.5 15.9 40 (27-123) 4-Chloro-3-methylphenol 200 166 83.0 1.2 42 (23-97) 4-Nitrophenol 200 63 31.5 11.8 50 (10-80)

   # 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: I Page 73 of 88

ADVANCED CHEMISTRY LABS, INC. SEMI-VOL GC/MS UNIT # 4 BASE/NEUTRAL EXTRACTABLES (8270C) WATER SEMI-VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Sequence Date: 06-25-05 Matrix Spike - Sample No.: LCS062005 SPIKE SAMPLE MS MS ac. ADDED CONCENTRATION CONCENTRATION % LIMITS COMPOUND (~g/L) (~g/L) (~g/L) REC # REC. 1,2,4-Trichlorobenzene 100 0 84 84.0 (39-98) Acenaphthene 100 0 97 97.0 (46-118) 2,4-Dinitrotoluene 100 0 86 86.0 (24-96) Di-n-butyl phthalate 100 0 114 114.0 (11-117) Pyrene 100 0 94 94.0 (26-127) N-Nitrosodi-n-propylamine 100 0 81 81.0 (41-116) 1,4-Dichlorobenzene 100 0 82 82.0 (36-97) SPIKE MSD MSD ADDED CONCENTRATION % % QC LIMITS COMPOUND ~g/L ~g/L REC # RPD # RPD REC. 1,2,4-Trichlorobenzene 100 91 91.0 8.0 28 (39-98) Acenaphthene 100 81 81.0 18.0 31 (46-118) 2,4-Dinitrotoluene 100 94 94.0 8.9 38 (24-96) Di-n-butyl phthalate 100 113 113.0 0.9 40 (11-117) Pyrene 100 99 99.0 5.2 31 (26-127) N-Nitrosodi-n-propylamine 100 97 97.0 18.0 38 (41-116) 1A-Dichlorobenzene 100 95 95.0 14.7 28 (36-97)

  # 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 74 of 88

IA CL I ADVANCED CHEMISTRY LABS, INC. Phone: (770) 4~09~_~14~4~4-------------3~0~3~9~Am-w~i~le-r~Ro-a~d-.~Su~it~e~10~0~.~A~t1a-n~ta-.~GA~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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                     #154                                Date Received: 06/17/2005 Marietta, GA 30068-0000             Date Reported: 07/15/2005

Contact:

Mr. Kurt Batsel Pesticides/PCBs (8081A18082)* Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water TCMX DCBP (30-130) (30-130) ACLSample# 233722 134** 70 233723 54 82 233726 54 82 I

  ** Matrix Interference DO=Diluted Out Page 75 of 88

IACLI 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                   #154                               Date Received:     06/17/2005 Marietta, GA 30068-0000            Date Reported:     07/15/2005

Contact:

Mr. Kurt Batsel Pesticides/PCBs (8081A18082) - Appendix II Sample ID: Matrix: Water Date Sampled: Date Extracted: 06/20/2005 Date Analyzed: 06/23/2005 ACL Sample #: Blank Units: I-'g/L Analyst: TM Analyte Result PQL Aldrin Sal 0.05 Arochlor-1016 Sal 0.50 Arochlor-1221 Sal 0.50 Arochlor-1232 Sal 0.50

-Arochlor-1242
   -ochlor-1248 Jochlor-1254 Sal Sal Sal 0.50 0.50 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'-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 76 of 88

Advanced Chemistry Labs -- Pesticides Spike Report (EPA Method 608) Instrument 10: HP5890A-ECDGC#1 Column: STx-CLPII, 30m, O.53mm, 0.42fJm ACL#: LCSW062005 Matrix: Water Extraction Date: 6/20/05 Analysis Date: 6/23/05 Initial Volume: 1000.0 ml Final Volume: 1 Dilution Factor: 1 Unit: fJg/L or ppb R.T. Spike Sample MS MS R.T. MSD MSD RPD QC Limits Pesticide MS Added Result Cone. Ree. (%) MSD Cone. Ree. (%1 (%) RPD % Recovery a-BHC 7.397 0.500 0.000 0.520 .104 7.398 0.528 106 1 25 37 134 g-BHC (Lindane) 8.387 0.500 0.000 0.499 100 8.338 0.503 101 1 25 21 127 b-BHC 8.650 0.500 0.000 0.472 94 8.650 0.476 95 1 25 17 147 d-BHC 9.550 0.500 0.000 0.502 100 9.550 0.506 101 1 25 19 140 Heptachlor 9.690 0.500 0.000 0.516 103 9.690 0.521 104 1 25 34 111 Aldrin 10.706 0.500 0.000 0.497 99 10.706 0.501 100 1 25 42 122 Heptachlor Epoxide 12.536 0.500 0.000 0.513 103 12.535 0.517 103 1 25 37 14~ a-Endosulfan I 13.855 0.500 0.000 0.497 99 13.854 , 0.500 100 1 25 45 153 14.217 0.500 0.000 0.508 102 14.216 103 30 145 DOE 0.515 1 25 Dieldrin 14.785 0.500 0.000 0.585 117 14.784 0.589 118 1 25 36 146 Endrin 15.820 0.500 0.000 0.526 105 15.819 0.532 106 1 25 30 147 DOD 16.209 0.500 0.000 0.503 101 16.208 0.508 102 1 25 31 141 b-Endosulfan II 16.561 0.500 0.000 0.502 100 16.560 0.507 101 1 25 1 202 DDT 17.251 0.500 0.000 0.526 105 17.251 0.535 107 2 25 25 160 Endrin Aldehyde 16.689 0.500 0.000 0.529 106 17.688 0.535 107 1 25 40 160 EndosuJfan Sulfate 18.615 0.500 0.000 0.480 96 18.614 0.485 97 1 25 26 144 Methoxychlor 19.575 0.500 0.000 0.534 107 19.573 0.540 108 1 25 40 160 Mirex 20.358 0.500 0.000 0.443 89 20.358 0.447 89 1 25 40 160 Endrin Ketone 20.510 0.500 0.000 0.495 99 20.509 0.497 99 0 25 40 160 Pesticide Calculation based on curve prep. on OS/20/05

Outside QC limits

                                                                                                            -Page 77 of 88

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                      #154                             Date Received:   06/17/2005 Marietta, GA 30068-0000          Date Reported:   07/15/2005

Contact:

Mr. Kurt Batsel Chlorinated Herbicides (8151A)

Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water oeAA (30-130) ACLSample# 233722 53 233723 51 233726 67 I -

   ** Matrix Interference DO=Diluted Out Page 78 of 88

IACLI Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC. Phone: (770) 4~0~9-~144~4--------------3~0~3~9"":"A-m-w~i1e-r~R~o-ad":""*~S~u~it-e ":""10~0~*~A~tJa-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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                #154                                  Date Received:     06/17/2005 Marietta, GA 30068-0000               Date Reported:     07/15/2005

Contact:

Mr. Kurt Batsel Chlorinated Herbicides (8151A)

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

Date Extracted: 06/20/2005 Date Analyzed: 07/13/2005 ACL Sample #: Blank Units: lJ9/L Analyst: TM 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 79 of 88

Advanced Chemistry Labs Herbicides Spike Report (SW-846 Method 8151A)

Instrument 10: HP5890A-ECDGC#5 Column: STx-CLPII, 30m, O.53mm, 0.42Jlm ACL#: LCSW062005 Matrix: WATER Extraction Date: 6/202005 Analysis Date: 7/13/05 Initial Volume: 1000.0 ml Final Volume: 4 Dilution Factor: 1 Unit: Jlg/L orppb R.T. Spike Sample MS MS R.T. MSD MSD RPD QC Limits Herbicide MS Added Result Conc. Rec. (%) MSD Conc. Rec. (%) (%) RPD % Recovery Dalapon 7.632 4.000 0.000 2.703 68 7.635 2.613 65 3 25 40 160 4-Nitrophenol 20.340 4.000 0.000 1.906 48 20.337 2.299 57 19 25 40 160 Dicamba 21.988 0.400 0.000 0.367 92 21.985 0.355 89 4 25 40 160 MCPP 22.255 400.000 0.000 368.237 92 22.252 354.808 89 4 25 40 160 MCPA 22.785 400.000 0.000 296.460 74 22.783 290.738 73 2 25 40 160 Dichlorprop 23.471 4.000 0.000 2.786 70 23.469 2.722 68 2 25 40 160 2,4-D 24.080 4.000 0.000 2.877 72 24.078 2.767 69 4 25 40 160 entachlorophenol 24.407 0.400 0.000 0.329 82 24.406 0.320 80 3 25 40 160 Silvex(2,4,5-TP) 25.372 0.400 0.000 0.354 89 25.369 0.343 86 3 25 40 160 2,4,5-T 25.959 0.400 0.000 0.511 128 25.957 0.505 126 1 25 40 160 2,4-D8 26.619 4.000 0.000 2.608 65 26.617 2.648 66 2 25 40 160 Dinoseb 26.998 0.400 0.000 0.238 59 26.996 0.238 60 0 25 40 160 Picloram 28.309 0.400 0.000 0.274 69 28.305 0.275 69 0 25 40 160 Acifluorfen 30.747 0.400 0.000 0.269 67 30.744 0.267 67 1 25 40 160 Herbicide Calculation based on curve prep. on 05126105

Outside QC limits Page 80 of 88

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                    #154                            Date Received:  06/17/2005 Marietta, GA 30068-0000         Date Reported:  07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011)

Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

                                                 . Water Bromofluorobenzene (40-140)

ACL Sample # 233715 87 233716 85 233717 97 233718 100 233719 92 233720 103 233721 102 233722 92 233723 87 233724 91 233725 111 233726 108 233727 109

 ** Matrix Interference DO=Diluted Out Page 81 of 88

IACLI ADVANCED CHEMISTRYLABS, INC. Phone: (770) 4~09~-~144~4--------------3~0~3~9~A-m-w~i1e-r~R~o-ad~.~S~u~ite~10~0-.~A~tl-an~ta-,""G--A-3~0"'3"'60~ Fax: (770) 409-1844 P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, llC Client Proj #: Plant Vogtle 4665 lower Roswell Road ACl Project #: 48231

                 #154                                     Date Received:      06/17/2005 Marietta, GA 30068-0000                  Date Reported:      07/15/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: ----------- Matrix: Water Date Sampled: Date Extracted: 06/20/2005 Date Analyzed: 06/20/2005 ACL Sample #: Blank Units: ~g/l Analyst: TM Analvte Result pal 1,2-Dibromo-3-chloropropane SQl 0.20 1,2-Dibromoethane SQl 0.05 Page 82 of 88 .

Advanced Chemistry Labs

   -            Pesticides Spike Report (SW-846 Method B011/Method 504.1)

Instrument 10: HP5890A-ECDIFIDGC#2 Column: SPB-5, 30m, O.32mm, O.25flm ACL#: LCSW062005 Matrix: Water Extraction Date: 6/20105 Analysis Date: 6/20105 Initial Volume: 35.0 ml Final Volume: 2 Dilution Factor: 1 Unit: flglL orppb R.T. Spike Sample MS MS R.T. MSD MSD RPD QCLimits Pesticide MS Added Result Cone. Ree. (%) MSD Cone. Ree. (%) (%) RPD % Recovery EDB 3.816 0.071 0.000 0.081 113 3.807 0.075 105 8 25 60 140 rep 6.180 0.071 0.000 0.077 109 6.167 0.076 107 2 25 60 140 DBCP 9.630 0.071 0.000 0.067 94 9.623 0.068 95 1 25 60 140

Outside QC limits I -

Page 83 of 88

IACLI Phone: (710) 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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                  #154                            Date Received:     06/17/2005 Marietta, GA 30068-0000         Date Reported:     07/15/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041) Sample 10: Matrix: Water Date Sampled: Date Extracted: Date Analyzed: 06/2312005 ACL Sample #: Blank Units: mg/L Analyst: SW/AD Analyte Result PQL Antimony BOl 0.006 Arsenic BOl 0.010 Barium BOl 0.020 Beryllium BOl 0.004 Cadmium BOl 0.005 ~l1romium BOl 0.020 Jbalt BOl 0.050 Copper BOl 0.020 lead BOl 0.010 Nickel BOl 0.020 Selenium BOl 0.040 Silver BOl 0.010 Thallium BOl 0.002 Vanadium BOl 0.050 Zinc BOl 0.020 Page 84 of 88

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, LLC Client Proj #: Plant Vogtle 4665 Lower Roswell Road ACL Project #: 48231

                 #154                               Date Received:    06/17/2005 Marietta, GA 30068-0000            Date Reported:    07/15/2005

Contact:

Mr. Kurt Batsel Appendix II Metals (6010B/7470Al7841/7041) Sample ID: Matrix: Water Date Sampled: Date Extracted: Date Analyzed: 06/23/2005 ACL Sample #: Blank Units: mg/L Analyst: SW/AD/JR Analvte 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

   )balt                           Sal      0.050
~opper                             Sal      0.020 lead                               Sal      0.010 Mercury                            Sal     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                               Sal     0.020 Page 85 of 88

ADVANCED CHEMISTRY LABS, INC. ICP Metals Water Matrix Spike/Matrix Spike Duplicate Recoveries lilstrument : TJA 61 E Trace ICP Date Digested: 6/20105 Date Analyzed: 6/23/05 ACL Sample No. : 233726-6 Spike Sample MS MS MSD MSD Added Result Result Recovery Result Recovery QC Limits ANALYTE (ppm) (ppm) (ppm) (%) # (ppm) (%) # RPD # RPD % Recovery Antimony 0.040 BRL 0.0337 84.3 0.0321 80.3 4.9 20 75 125 Arsenic 0.200 BRL 0.1929 96.5 0.1971 98.6 2.2 20 75 125 Barium 1.000 BRL 1.0040 100.4 1.0160 101.6 1.2 20 75 125 Beryllium 0.200 BRL 0.2009 100.5 0.2056 102.8 2.3 20 75 125 Cadmium 0.050 BRL 0.0491 98.2 00500 100.0 1.8 20 75 125 Chromium 0.200 BRL 0.2005 100.3 0.2037 101.9 1.6 20 75 125 Cobalt 0.200 BRL 0.2013 100.7 0.2045 102.3 1.6 20 75 125 Copper 0.200 BRL 0.2055 102.8 0.2088 104.4 16 20 75 125 Lead 0.200 BRL 0.2001 100.1 0.2050 102.5 2.4 20 75 125 Nickel 0.200 0.0049 0.2036 99.4 0.2054 100.3 0.9 20 75 125 Selenium 0.050 BRL 0.0445 89.0 0.0459 91.8 3.1 20 75 125 Silver 0.020 BRL 0.0197 98.5 0.0201 100.5 2.0 20 75 125 Tin 0.200 BRL 0.1982 99.1 0.2010 100.5 1.4 20 75 125 Thallium 0.040 BRL 0.0351 87.8 0.0346 86.5 1.4 20 75 125 Vanadium 0.500 BRL 0.4995 99.9 0.5075 101.5 1.6 20 75 125 Zinc 0.200 0.0154 0.2100 97.3 0.2121 98.4 1.1 20 75 125 BRL denotes results 'Below Reporting Level'

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

Values outside of QC limits RPD: o out of 16 outside limits Rec. %: o out of 32 outside limits Comments:

Page 86 of 88

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3039 Amwiler Road* Suite 100' Atlanta, GA 30360. P. O. Box 88610

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o I"- eo ANALYSIS REQUEST Q) 0> co a.. I attest that the proper field sampling Sampler Name (Print): procedures were used during the collection of these samples. Matrix Field ID Sample c: Sc: Q) u .... 10 Cl :J e 0 ." Q) (J

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Special Reporting Requirements Lab Use Only: Cooler Temp. ~N~o~rm~al _ _...::0::..L~P.;O~.~==:::;::::=======_I QAlQC Level FaxO ACL Project #: 3.1 DC Level 1 0 Level 2 0 Other 0 Received by: CUSTODY Received by: RECORD Relinquished by :

ApPENDIX C - STATISTICAL ANALYSES .- LANDFILL #2 Concentrations (mg/L) Parameter: Barium Original Data (Not Transformed) Non-Detects Replaced with 1/2 DL Total Samples: 33 Total Non-Detect: 16 Percent Non-Detects: 48.4848% Total Background Samples: 9 There is 1 background well Well Samples NO Date Result Original GWA-2/MW-2 9 6 (66.6667%) 7/30/2002 0.027 0.027 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/4/2002 0.015 0.015 6/25/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/16/2004 ND<0.01 ND<0.02 12128/2004 ND<0.01 ND<0.02 6/14/2005 0.021 0.021 There are 3 compliance wells Well Samples NO Date Result Original GWB-4/MW-4 9 3 (33.3333%) 7/30/2002 0.021 0.021 9/24/2002 0.021 0.021 10/21/2002 0.021 0.021 12/412002 - 0.0205 0.0205 6/25/2003 ND<0.01 ND<0.02 12117/2003 ND<0.01 ND<0.02 6/16/2004 ND<0.01 ND<0.02 12/28/2004 0.021 0.,021 6/1412005 0.042 0.042 GWC-11/MW-119 3 (33.3333%) 7/30/2002 0.085 0.085 9/24/2002 0.02 0.02 10/21/2002 0.025 0.025 12/412002 0.018 0.018 6/25/2003 ND<0.01 ND<0.02 12117/2003 0.022 0.022 6/16/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 0.034 0.034 GWC-3/MW-3 6 4 (66.6667%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 12/4/2002 0.02 0.02 12/17/2003 ND<0.01 ND<0.02 6116/2004 0.02 0.02 6/14/2005 ND<0.01 ND<0.02 There is 1 unused well Well Samples NO Date Result Original Page 1

EO-Blank 4 4(100%) 6/25/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 611612004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 Page 2

Shapiro-Wilks Test of Normality Parameter: Barium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed) Non-Detects Replaced with 1/2 DL

K 16; Samples 33 = i x(i) x(n-i+1) x(n-1 +1 )-x(i)a(n-i+1) b(i) 1 0.01 0.085 0.075 0.4156 0.03117 2 0.01 0.042 0.032 0.2876 0.0092032 3 0.01 0.034 0.024 0.2451 0.0058824 4 0.01 0.027 0.017 0.2137 0.0036329 5 0.01 0.025 0.015 0.188 0.00282 6 0.01 0.022 0.012 0.166 0.001992 7 0.01 0.021 0.011 0.1463 0.0016093 8 0.01 0.021 0.011 0.1284 0.0014124 9 0.01 0.021 0.011 0.1118 0.0012298 10 0.01 0.021 0.011 0.0961 0.0010571 11 0.01 0.021 0.011 0.0812 0.0008932 12 0.01 0.0205 0.0105 0.0669 0.00070245 13 0.01 0.02 0.01 0.053 0.00053 14 0.01 0.02 0.01 0.0395 0.000395 15 0.01 0.02 0.01 0.0262 0.000262 16 0.01 0.018 0.008 0.0131 0.0001048 17 0.015 0.015 o 18 0.018 0.01 -0.008 19 0.02 0.01 -0.01 20 0.02 0.01 -0.01 21 0.02 0.01 -0.01 22 0.0205 0.01 -0.0105 23 0.021 0.01 -0.011 24 0.021 0.01 -0.011 25 0.021 0.01 -0.011 26 0.021 0.01 -0.011 27 0.021 0.01 -0.011 28 0.022 0.01 -0.012 29 0.025 0.01 -0.015 30 0.027 0.01 -0.017 31 0.034 0.01 -0.024 32 0.042 0.01 -0.032 33 0.085 0.01 -0.075 Sum of b values = 0.0628966 Sample Standard Deviation = 0.0143088 W Statistic = 0.603807 5% Critical value of 0.931 exceeds 0.603807 Evidence of non-normality at 95% level of significance 1% Critical value of 0.906 exceeds 0.603807 Evidence of non-normality at 99% level of significance Page3

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-2/MW-2 7/3012002 0.027 30 9/24/2002 ND<0.01 8.5 10/21/2002 ND<0.01 8.5 12/412002 0.015 17 6125/2003 ND<0.01 8.5 12/17/2003 ND<0.01 8.5 611612004 ND<0.01 8.5 12/28/2004 ND<0.01 8.5 611412005 0.021 23 Rank Sum = 121 Rank Mean = 13.4444 Background Rank Sum = 121 Background Rank Mean = 13.4444 Compliance Wells WelllD Date Result Rank GWB-4/MW-4 7/30/2002 0.021 24 9/24/2002 0.021 25' 10/21/2002 0.021 26 12/412002 - 0.0205 22 6125/2003 ND<0.01 8.5 12/17/2003 ND<0.01 8.5 611612004 ND<0.01 8.5 12/28/2004 0.021 27 611412005 0.042 32 Rank Sum = 181.5 Rank Mean = 20.1667 GWC-11/MW-117/30/2002 0.085 33 9/24/2002 0.02 19 10/21/2002 0.025 29 12/412002 0.018 18 6125/2003 ND<0.01 8.5 12/17/2003 0.022 28 611612004 ND<0.01 8.5 12/28/2004 ND<0.01 8.5 611412005 0.034 31 Rank Sum = 183.5 Rank Mean = 20.3889 GWC-3/MW-3 7/3012002 ND<0.01 8.5 9/24/2002 ND<0.01 8.5 12/4/2002 0.02 20 Page4

12/17/2003 ND<0.01 8.5 6116/2004 0.02 21 6/14/2005 ND<0.01 8.5 Rank Sum = 75 Rank Mean = 12.5 Calculation Results: Kruskal-Wallis H Statistic = 4.58705

Kruskal-Wallis H Statistic (adjusted for tied non-detects) 5.17513 95% Confidence comparison value is 7.81472 at 3 degrees of freedom 4.58705 < 7.81472 indicating no significant group difference at 5% significance level 5.17513 < 7.81472 indicating no significant group difference at 5% significance level when adjusted for ties PageS

Concentrations (mg/L) Parameter: Zinc Original Data (Not Transformed) Non-Detects Replaced with 1/2 DL Total Samples: 33 Total Non-Detect: 28 Percent Non-Detects: 84.8485% Total Background Samples: 9 There is 1 background well Well Samples NO Date Result Original GWA-2/MW-2 9 9 (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 12/4/2002 ND<0.01 ND<0.02 6/25/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/16/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 There are 3 compliance wells Well Samples NO Date Result Original GWB-4/MW-4 9 8 (88.8889%) 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 12/4/2002 - ND<0.01 ND<0.02 6/25/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/16/2004 ND<0.01 ND<0.02 12128/2004 ND<0.01 ND<0.02 6/14/2005 0.029 0.029 GWC-11/MW-119 6 (66.6667%) 7/30/2002 0.034 0.034 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/4/2002 ND<0.01 ND<0.02 6/25/2003 0.029 0.029 12/17/2003 ND<0.01 ND<0.02 6/16/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 0.025 0.025 GWC-3/MW-3 6 5 (83.3333%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 12/4/2002 0.047 0.047 12/17/2003 ND<0.01 ND<0.02 6/16/2004 ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 There is 1 unused well ..--.. Well Samples NO Date Result Original Page 6

EO-Blank 4 4 (100%) 6/25/2003 ND<0.01 ND<O.02 12/17/2003 ND<0.01 ND<O.02 611612004 ND<0.01 ND<O.02 12/28/2004 ND<0.01 ND<O.02 Page 7

Shapiro-Wilks Test of Normality Parameter: Zinc All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed) Non-Detects Replaced with 1/2 DL K = 16; Samples = 33 i x(i) x(n-i+1 ) x(n-1 +1 )-x(i)a(n-i+1) b(i) 1 0.01 0.047 0.037 0.4156 0.0153772 2 0.01 0.034 0.024 0.2876 0.0069024 3 0.01 0.029 0.019 0.2451 0.0046569 4 0.01 0.029 0.019 0.2137 0.0040603 5 0.01 0.025 0.015 0.188 0.00282 6 0.01 0.01 o 0.166 o 7 0.01 0.01 o 0.1463 o 8 0.01 0.01 o 0.1284 o 9 0.01 0.01 o 0.1118 o 10 0.01 0.01 o 0.0961 o 11 0.01 0.01 o 0.0812 o 12 0.01 0.01 o 0.0669 o 13 0.01 0.01 o 0.053 o 14 0.01 0.01 o 0.0395 o 15 0.01 0.01 o 0.0262 o 16 0.01 0.01 o 0.0131 o 17 0.01 0.01 o 18 0.01 0.01 o 19 0.01 0.01 o 20 0.01 0.01 o 21 0.01 0.01 o 22 0.01 0.01 o 23 0.01 0.01 o 24 0.01 0.01 o 25 0.01 0.01 o 26 0.01 0.01 o 27 0.01 0.01 o 28 0.01 0.01 o 29 0.025 0.01 -0.015 30 0.029 0.01 -0.019 31 0.029 0.01 -0.019 32 0.034 0.01 -0.024 33 0.047 0.01 -0.037 Sum of b values = 0.0338168 Sample Standard Deviation = 0.00883562

W Statistic 0.457763 5% Critical value of 0.931 exceeds 0.457763 Evidence of non-normality at 95% level of significance 1% Critical value of 0.906 exceeds 0.457763 Evidence of non-normality at 99% level of significance Page 6

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-2/MW-2 7/30/2002 ND<0.01 14.5 9/24/2002 ND<0.01 14.5 10/21/2002 ND<0.01 14.5 12/4/2002 ND<0.01 14.5 6/25/2003 ND<0.01 14.5 12/17/2003 ND<0.01 14.5 6/16/2004 ND<0.01 14.5 12/28/2004 ND<0.01 14.5 6/14/2005 ND<0.01 14.5

Rank Sum 130.5

Rank Mean 14.5

Background Rank Sum 130.5 Background Rank Mean 14.5= Compliance Wells WelllD Date Result Rank GWB-4/MW-4 7/30/2002 ND<0.01 14.5 9/24/2002 ND<0.01 14.5 10/21/2002 ND<0.01 14.5 12/4/2002 - ND<0.01 14.5 6/25/2003 ND<0.01 14.5 12/17/2003 ND<0.01 14.5 6/16/2004 ND<0.01 14.5 12/28/2004 ND<0.01 14.5 6/14/2005 0.029 30

Rank Sum 146

Rank Mean 16.2222 GWC-11/MW-117/30/2002 0.034 32 9/24/2002 ND<0.01 14.5 10/21/2002 ND<0.01 14.5 12/4/2002 ND<0.01 14.5 6/25/2003 0.029 31 12/17/2003 ND<0.01 14.5 6/16/2004 ND<0.01 14.5 12/28/2004 ND<0.01 14.5 6/14/2005 0.025 29

Rank Sum 179

Rank Mean 19.8889 GWC-3/MW-3 7/30/2002 ND<0.01 14.5 9/24/2002 ND<0.01 14.5 12/4/2002 0.047 33 Page 9

12117/2003 ND<0.01 14.5 6/16/2004 ND<0.01 14.5 6/14/2005 ND<0.01 14.5 Rank Sum = 105.5 Rank Mean = 17.5833 Calculation Results: Kruskal-Wallis H Statistic = 1.485 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 3.81383 95% Confidence comparison value is 7.81472 at 3 degrees of freedom 1.485 < 7.81472 indicating no significant group difference at 5% significance level 3.81383 < 7.81472 indicating no significant group difference at 5% significance level when adjusted for ties Page 10

LANDFILL #3 Concentrations (mg/L) Parameter: Barium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Samples: 53 Total Non-Detect: 32 Percent Non-Detects: 60.3774% Total Background Samples: 9 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-159 9 (100%) 7/30/2002 ND<0.02 ND<0.02 9/24/2002 ND<0.02 ND<0.02 10/21/2002 - ND<0.02 ND<0.02 1213/2002 ND<0.01 ND<0.01 6/24/2003 ND<0.02 ND<0.02 12/17/2003 ND<0.02 ND<0.02 6/15/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6/14/2005 ND<0.02 ND<0.02 There are 7 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 9 7 (77.7778%) 7/30/2002 - ND<0.02 ND<0.02 9/24/2002 ND<0.02 ND<0.02 10/21/2002 ND<0.02 ND<0.02 12/3/2002 0.015 0.015 6/24/2003 0.036 0.036 12117/2003 ND<0.02 ND<0.02 6/15/2004 ND<0.02 ND<0.02 12/28/2004 - ND<0.02 ND<0.02 6/14/2005 ND<0.02 ND<0.02 GWB-6/MW-6 9 9 (100%) 7/30/2002 ND<0.02 ND<0.02 9/24/2002 ND<0.02 ND<0.02 10/21/2002 ND<0.02 ND<0.02 12/3/2002 ND<0.01 ND<0.01 6/24/2003 ND<0.02 ND<0.02 12/17/2003 ND<0.02 ND<0.02 6/15/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6/13/2005 ND<0.02 ND<0.02 GWC-13/MW-139 0(0%) 7/30/2002 0.077 0.077 9/24/2002 0.085 0.085 10/21/2002 0.083 0.083 12/312002 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 - 0.0295 0.0295 Page 1

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 12117/2003 0.189 0.189 GWC-5/MW-5 9 5 (55.5556%) 7/30/2002 ND<0.02 ND<0.02 9/24/2002 0.02 0.02 10/21/2002 ND<0.02 ND<0.02 12/3/2002 0.018 0.018 6/24/2003 ND<0.02 ND<0.02 12/17/2003 0.142 0.142 6/15/2004 0.04 0.04 12/28/2004 ND<0.02 ND<0.02 6113/2005 ND<0.02 ND<0.02 GWC-17/MW-171 1 (100%) 6/15/2005 ND<0.02 ND<0.02 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.02 ND<0.02 There is 1 unused well Well Samples NO Date Result Original EO-Blank 5 5 (100%) 6/24/2003 ND<0.02 ND<0.02 12/17/2003 ND<0.02 ND<0.02 6/15/2004 ND<0.02 ND<0.02 12/28/2004 - ND<0.02 ND<0.02 6/15/2005 ND<0.02 ND<0.02 Page 2

Shapiro-Francia Test of Normality Parameter: Barium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Sample Size = 53 i x(i) m(i) sum(mJ\2) sum(mx) o 0 o o o 1 0.01 -2.09693 4.39712 -0.0209693 2 0.01 -1.78661 7.5891 -0.0388354 3 0.015 -1.59819 10.1433 -0.0628083 4 0.018 -1.44663 12.2361 -0.0888477 5 0.02 -1.32854 14.0011 -0.115418 6 0.02 -1.22123 15.4925 -0.139843 7 0.02 -1.13113 16.7719 -0.162466 8 0.02 -1.04505 17.8641 -0.183367 9 0.02 -0.970094 18.8052 -0.202769 10 0.02 -0.896473 19.6088 -0.220698 11 0.02 -0.830953 20.2993 -0.237317 12 0.02 -0.765456 20.8852 -0.252626 13 0.02 -0.706302 21.3841 -0.266752 14 0.02 -0.646431 21.802 -0.279681 15 0.02 -0.591776 22.1522 -0.291516 16 0.02 -0.53594 22.4394 -0.302235 17 0.02 -0.484544 22.6742 -0.311926 18 0.02 -0.431644 22.8605 -0.320559 19 0.02 -0.382622 23.0069 -0.328211 20 0.02 -0.331854 23.117 -0.334849 21 0.02 -0.284535 23.198 -0.340539 22 0.02 -0.235269 23.2533 -0.345245 23 0.02 -0.189118 23.2891 -0.349027 24 0.02 -0.140835 23.3089 -0.351844 25 0.02 -0.0953969 23.318 -0.353752 26 0.02 -0.0476439 23.3203 -0.354704 27 0.02 o 23.3203 -0.354704 28 0.02 0.0476439 23.3226 -0.353752 29 0.02 0.0953969 23.3317 -0.351844 30 0.02 0.140835 23.3515 -0.349027 31 0.02 0.189118 23.3873 -0.345245 32 0.02 0.235269 23.4426 -0.340539 33 0.02 0.284535 23.5236 -0.334849 34 0.02 0.331854 23.6337 -0.328211 35 0.02 0.382622 23.7801 -0.320559 36 0.0295 0.431644 23.9664 -0.307825 37 0.0295 0.484544 24.2012 -0.293531 38 0.0325 0.53594 24.4884 -0.276113 39 0.034 0.591776 24.8386 -0.255993 40 0.036 0.646431 25.2565 -0.232721 41 0.04 0.706302 25.7554 -0.204469 42 0.043 0.765456 26.3413 -0.171555 43 0.051 0.830953 27.0318 -0.129176 44 0.064 0.896473 27.8354 -0.0718019 45 0.068 0.970094 28.7765 -0.00583549 46 0.077 1.04505 29.8687 0.0746334 Page 3

47 0.082 1.13113 31.1481 0.167386 48 0.083 1.22123 32.6395 0.268748 49 0.085 1.32854 34.4045 0.381674 50 0.0935 1.44663 36.4973 0.516934 51 0.106 1.59819 39.0515 0.686343 52 0.142 1.78661 42.2435 0.940041 Sample Standard Deviation = 0.0349348

Numerator 0.883678

             =          =

Denominator 2.68089 5242.2435 W Statistic = 0.329621 5% Critical value of 0.957 exceeds 0.329621 Evidence of non-normality at 95% level of significance 1% Critical value of 0.938 exceeds 0.329621 Evidence of non-normality at 99% level of significance Page 4

Kruskal-Wallis Non-Parametric Test Parameter: Barium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.02 16.5 9/24/2002 ND<0.02 16.5 10/21/2002 - ND<0.02 16.5 12/312002 ND<0.01 16.5 6124/2003 ND<0.02 16.5 12/17/2003 ND<0.02 16.5 611512004 ND<0.02 16.5 12/28/2004 ND<0.02 16.5 611412005 ND<0.02 16.5 Rank Sum = 148.5 Rank Mean = 16.5 Background Rank Sum = 148.5 Background Rank Mean = 16.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002 - ND<0.02 16.5 9/24/2002 ND<0.02 16.5 10/21/2002 ND<0.02 16.5 12/3/2002 0.015 33 6/24/2003 0.036 40 12117/2003 ND<0.02 16.5 6/15/2004 ND<0.02 16.5 12128/2004 - ND<0.02 16.5 6/14/2005 ND<0.02 16.5 Rank Sum = 188.5 Rank Mean = 20.9444 GWB-6/MW-6 7/30/2002 ND<0.02 16.5 9/24/2002 ND<0.02 16.5 10/21/2002 ND<0.02 16.5 12/3/2002 ND<0.01 16.5 6/24/2003 ND<0.02 16.5 12/17/2003 ND<0.02 16.5 6/15/2004 ND<0.02 16.5 12/28/2004 ND<0.02 16.5 6/13/2005 ND<0.02 16.5 Rank Sum = 148.5 Rank Mean = 16.5 GWC-13/MW-137/30/2002 0.077 46 9/24/2002 0.085 49 10/21/2002 0.083 48 PageS

12/3/2002 0.082 47 6/24/2003 - 0.0295 36 12117/2003 - 0.0325 38 6/15/2004 - 0.034 39 12128/2004 0.043 42 6/13/2005 - 0.0295 37

Rank Sum 382

Rank Mean 42.4444 GWC-14/MW-147/30/2002 0.068 45 9/24/2002 - 0.0935 50 10/21/2002 0.064 44 12/3/2002 0.106 51 6/24/2003 0.051 43 12/17/2003 0.189 53

Rank Sum 286

Rank Mean 47.6667 GWC-5/MW-5 7/30/2002 ND<0.02 16.5 9/24/2002 0.02 35 10/21/2002 ND<0.02 16.5 12/3/2002 0.018 34 6/24/2003 ND<0.02 16.5 12/17/2003 0.142 52 6115/2004 0.04 41 12/28/2004 ND<0.02 16.5 6/13/2005 ND<0.02 16.5

Rank Sum 244.5

Rank Mean 27.1667 GWC-17/MW-176/15/2005 ND<0.02 16.5

Rank Sum 16.5

Rank Mean 16.5 GWC-18/MW-186/15/2005 ND<0.02 16.5

Rank Sum 16.5

Rank Mean 16.5 Calculation Results: Kruskal-Wallis H Statistic = 30.3762 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 38.9421 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 30.3762> 14.0671 indicating a significant group difference at 5% significance level 38.9421 > 14.0671 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 16.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 20.9444 4.44444 16.936 GWB-6/MW-6 16.5 o 16.936 GWC-13/MW-1342.4444 25.9444 16.936 GWC-14/MW-1447.6667 31.1667 18.9351 GWC-S/MW-5 27.1667 10.6667 16.936 GWC-17/MW-17165 o 37.8701 Page 6

GWC-18/MW-1816.5 o 37.8701 Individual Well Comparisons at Groupwise 5% Significance Level (0.714286% Significance Level per comparison) 0.714286% Z score is 2.45727 Mean background rank is 16.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 20.9444 4.44444 17.8892 GWB-6/MW-6 16.5 o 17.8892 GWC-13/MW-1342.4444 25.9444 17.8892 GWC-14/MW-1447.6667 31.1667 20.0008 GWC-5/MW-5 27.1667 10.6667 17.8892 GWC-17/MW-1716.5 o 40.0015 GWC-18/MW-1816.5 o 40.0015 Page 7

Concentrations (mg/L) Parameter: Zinc Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Samples: 53 Total Non-Detect: 43 Percent Non-Detects: 81 .1321 % Total Background Samples: 9 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-159 8 (88.8889%) 7/30/2002 ND<0.02 ND<0.02 9/24/2002 ND<0.02 ND<0.02 10/21/2002 - ND<0.02 ND<0.02 12/3/2002 ND<0.02 ND<0.02 6/24/2003 ND<0.02 ND<0.02 12117/2003 ND<0.02 ND<0.02 6/15/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6114/2005 0.029 0.029 There are 7 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 9 7 (77.7778%) 7/30/2002 - ND<0.02 ND<0.02 9/24/2002 ND<0.02 ND<0.02 10/21/2002 ND<0.02 ND<0.02 1213/2002 ND<0.02 ND<0.02 6/24/2003 0.034 0.034 12/17/2003 0.023 0.023 6/1512004 ND<0.02 NO<0.02 12/28/2004 - ND<0.02 NP<0.02 6/14/2005 ND<0.02 ND<0.02 GWB-6/MW-6 9 9 (100%) 7/30/2002 ND<0.02 ND<0.02 9/24/2002 ND<0.02 ND<0.02 10/21/2002 ND<0.02 ND<0.02 12/3/2002 ND<0.02 ND<0.02 6/24/2003 ND<0.02 ND<0.02 12/17/2003 ND<0.02 ND<0.02 6/15/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6/13/2005 ND<0.02 ND<0.02 GWC-13/MW-139 4 (44.4444%) 7/30/2002 ND<0.02 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<0.02 ND<0.02 12/17/2003 - ND<0.02 ND<0.02 6/15/2004 - ND<0.02 ND<0.02 12/28/2004 0.044 0.044 6/1312005 - 0.02 0.02 Page 8

GWC-14/MW-146 5 (83.3333%) 7/30/2002 ND<0.02 ND<0.02 9/24/2002 - ND<0.02 ND<0.02 10/21/2002 ND<0.02 ND<0.02 12/3/2002 ND<0.02 ND<0.02 6/24/2003 ND<0.02 ND<0.02 12/17/2003 0.127 0.127 GWC-5/MW-5 9 8 (88.8889%) 7/30/2002 ND<0.02 ND<0.02 9/24/2002 ND<0.02 ND<0.02 10/21/2002 ND<0.02 ND<0.02 12/3/2002 ND<0.02 ND<0.02 6/24/2003 ND<0.02 ND<0.02 12/17/2003 0.032 0.032 6/15/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6/13/2005 ND<0.02 ND<0.02 GWC-17/MW-171 1 (100%) 6/15/2005 ND<0.02 ND<0.02 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.02 ND<0.02 There is 1 unused well Well Samples NO Date Result Original EO-Blank 5 5 (100%) 6/24/2003 ND<0.02 ND<0.02 12/17/2003 ND<0.02 ND<0.02 6/15/2004 ND<0.02 ND<0.02 12/28/2004 - ND<0.02 ND<0.02 6/15/2005 ND<0.02 ND<0.02 Page 9

Shapiro-Francia Test of Normality Parameter: Zinc All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Sample Size = 53 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 0.02 -2.09693 4.39712 -0.0419386 2 0.02 -1.78661 7.5891 -0.0776708 3 0.02 -1.59819 10.1433 -0.109635 4 0.02 -1.44663 12.2361 -0.138567 5 0.02 -1.32854 14.0011 -0.165138 6 0.02 -1.22123 15.4925 -0.189563 7 0.02 -1.13113 16.7719 -0.212185 8 0.02 -1.04505 17.8641 -0.233086 9 0.02 -0.970094 18.8052 -0.252488 10 0.02 -0.896473 19.6088 -0.270418 11 0.02 -0.830953 20.2993 -0.287037 12 0.02 -0.765456 20.8852 -0.302346 13 0.02 -0.706302 21.3841 -0.316472 14 0.02 -0.646431 21.802 -0.329401 15 0.02 -0.591776 22.1522 -0.341236 16 0.02 -0.53594 22.4394 -0.351955 17 0.02 -0.484544 22.6742 -0.361646 18 0.02 -0.431644 22.8605 -0.370279 19 0.02 -0.382622 23.0069 -0.377931 20 0.02 -0.331854 23.117 -0.384568 21 0.02 -0.284535 23.198 -0.390259 22 0.02 -0.235269 23.2533 -0.394964 23 0.02 -0.189118 23.2891 -0.398747 24 0.02 -0.140835 23.3089 -0.401563 25 0.02 -0.0953969 23.318 -0.403471 26 0.02 -0.0476439 23.3203 -0.404424 27 0.02 o 23.3203 -0.404424 28 0.02 0.0476439 23.3226 -0.403471 29 0.02 0.0953969 23.3317 -0.401563 30 0.02 0.140835 23.3515 -0.398747 31 0.02 0.189118 23.3873 -0.394964 32 0.02 0.235269 23.4426 -0.390259 33 0.02 0.284535 23.5236 -0.384568 34 0.02 0.331854 23.6337 -0.377931 35 0.02 0.382622 23.7801 -0.370279 36 0.02 0.431644 23.9664 -0.361646 37 0.02 0.484544 24.2012 -0.351955 38 0.02 0.53594 24.4884 -0.341236 39 0.02 0.591776 24.8386 -0.329401 40 0.02 0.646431 25.2565 -0.316472 41 0.02 0.706302 25.7554 -0.302346 42 0.02 0.765456 26.3413 -0.287037 43 0.02 0.830953 27.0318 -0.270418 44 0.02 0.896473 27.8354 -0.252488 45 0.023 0.970094 28.7765 -0.230176 46 0.023 1.04505 29.8687 -0.20614 Page 10

47 0.027 1.13113 31.1481 -0.175599 48 0.027 1.22123 32.6395 -0.142626 49 0.029 1.32854 34.4045 -0.104099 50 0.032 1.44663 36.4973 -0.0578063 51 0.034 1.59819 39.0515 -0.00346776 52 0.044 1.78661 42.2435 0.0751431 Sample Standard Deviation = 0.0151335 Numerator = 0.00564649 Denominator = 0.503088 = 5242.2435 W Statistic = 0.0112237 5% Critical value of 0.957 exceeds 0.0112237 Evidence of non-normality at 95% level of significance 1% Critical value of 0.938 exceeds 0.0112237 Evidence of non-normality at 99% level of significance Page 11

Kruskal-Wallis Non-Parametric Test Parameter: Zinc Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.02 22 9/24/2002 ND<0.02 22 10/21/2002 - ND<0.02 22 1213/2002 ND<0.02 22 6/24/2003 ND<0.02 22 12/17/2003 ND<0.02 22 6/15/2004 ND<0.02 22 12128/2004 ND<0.02 22 6/14/2005 0.029 49 Rank Sum = 225 Rank Mean = 25 Background Rank Sum = 225 Background Rank Mean = 25 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - ND<0.02 22 9/24/2002 ND<0.02 22 10/21/2002 ND<0.02 22 12/3/2002 ND<0.02 22 6/24/2003 0.034 51 12117/2003 0.023 45 6/15/2004 ND<0.02 22 12/28/2004 - ND<0.02 22 6/14/2005 ND<0.02 22 Rank Sum = 250 Rank Mean = 27.7778 GWB-6/MW-6 7/30/2002 ND<0.02 22 9/24/2002 ND<0.02 22 10/21/2002 ND<0.02 22 12/3/2002 ND<0.02 22 6/24/2003 ND<0.02 22 12/17/2003 ND<0.02 22 6/15/2004 ND<0.02 22 12/28/2004 ND<0.02 22 6/13/2005 ND<0.02 22 Rank Sum = 198 Rank Mean = 22 GWC-13/MW-137/30/2002 ND<0.02 22 9/24/2002 0.023 46 10/21/2002 0.027 47 Page 12

12/3/2002 0.027 48 6/24/2003 - ND<0.02 22 12117/2003 - ND<0.02 22 6/15/2004 - ND<0.02 22 12/28/2004 0.044 52 6/1312005 - 0.02 44

Rank Sum 325

Rank Mean 36.1111 GWC-14/MW-147/30/2002 ND<0.02 22 9/24/2002 - ND<0.02 22 10/21/2002 ND<0.02 22 1213/2002 ND<0.02 22 6/24/2003 ND<0.02 22 12117/2003 0.127 53

Rank Sum 163

Rank Mean 27.1667 GWC-5/MW-5 7/3012002 ND<0.02 22 9/24/2002 ND<0.02 22 10/21/2002 ND<0.02 22 12/3/2002 ND<0.02 22 6/24/2003 ND<0.02 22 12/17/2003 0.032 50 6115/2004 ND<0.02 22 12128/2004 ND<0.02 22 6/13/2005 ND<0.02 22

Rank Sum 226

Rank Mean 25.1111 GWC-17/MW-176/15/2005 ND<0.02 22

Rank Sum 22

Rank Mean 22 GWC-18/MW-186/15/2005 ND<0.02 22

Rank Sum 22

Rank Mean 22 Calculation Results:

Kruskal-Wallis H Statistic 4.59469 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 9.85871 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 4.59469 < 14.0671 indicating no significant group difference at 5% significance level 9.85871 < 14.0671 indicating no significant group difference at 5% significance level when adjusted for ties Page 13

Concentrations (J,lg/L) Parameter: 1,1-Dichloroethane Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Samples: 53 Total Non-Detect: 39 Percent Non-Detects: 73.5849% Total Background Samples: 9 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-159 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 - ND<5 ND<5 1213/2002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/1512004 ND<5 ND<5 12/28/2004 ND<5 ND<5 6/1412005 ND<5 ND<5 There are 7 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 9 9 (100%) 7/30/2002 - ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/312002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/1512004 ND<5 NO<5 12/28/2004 - ND<5 NP<5 6/1412005 ND<5 ND<5 GWB-6/MW-6 9 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/312002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/1512004 ND<5 ND<5 12/28/2004 ND<5 ND<5 6/1312005 ND<5 ND<5 GWC-13/MW-139 1 (11.1111%) 7/30/2002 ND<5 ND<5 9/24/2002 6 6 10/21/2002 6 6 12/312002 7 7 6124/2003 - 9 9 12/17/2003 - 20.5 20.5 6/1512004 - 18 18 12/28/2004 16 16 611312005 - 15 15 Page 14

GWC-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 GWC-5/MW-5 9 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 1213/2002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12/28/2004 ND<5 ND<5 6/13/2005 ND<5 ND<5 GWC-17/MW-171 1 (100%) 6/15/2005 ND<5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<5 ND<5 There are 2 unused wells Well Samples NO Date Result Original EO-Blank 5 5 (100%) 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12/28/2004 - ND<5 ND<5 6/15/2005 ND<5 ND<5 Trip Blank 2 2(100%) 12/17/2003 ND<5 ND<5 6/13/2005 ND<5 ND<5 Page 15

r-- Shapiro-Francia Test of Normality Parameter: 1,1-Dichloroethane All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Sample Size = 53 i x(i) m(i) sum(mJ\2) sum(mx) 0 0 0 0 0 1 5 -2.09693 4.39712 -10.4847 2 5 -1.78661 7.5891 -19.4177 3 5 -1.59819 10.1433 -27.4087 4 5 -1.44663 12.2361 -34.6418 5 5 -1.32854 14.0011 -41.2845 6 5 -1.22123 15.4925 -47.3907 7 5 -1.13113 16.7719 -53.0463 8 5 -1.04505 17.8641 -58.2716 9 5 -0.970094 18.8052 -63.1221 10 5 -0.896473 19.6088 -67.6044 11 5 -0.830953 20.2993 -71.7592 12 5 -0.765456 20.8852 -75.5865 13 5 -0.706302 21.3841 -79.118 14 5 -0.646431 21.802 -82.3501 15 5 -0.591776 22.1522 -85.309 16 5 -0.53594 22.4394 -87.9887 17 5 -0.484544 22.6742 -90.4114 18 5 -0.431644 22.8605 -92.5697 19 5 -0.382622 23.0069 -94.4828 20 5 -0.331854 23.117 -96.142 21 5 -0.284535 23.198 -97.5647 22 5 -0.235269 23.2533 -98.7411 23 5 -0.189118 23.2891 -99.6867 24 5 -0.140835 23.3089 -100.391 25 5 -0.0953969 23.318 -100.868 26 5 -0.0476439 23.3203 -101.106 27 5 0 23.3203 -101.106 28 5 0.0476439 23.3226 -100.868 29 5 0.0953969 23.3317 -100.391 30 5 0.140835 23.3515 -99.6867 31 5 0.189118 23.3873 -98.7411 32 5 0.235269 23.4426 -97.5647 33 5 0.284535 23.5236 -96.142 34 5 0.331854 23.6337 -94.4828 35 5 0.382622 23.7801 -92.5697 36 5 0.431644 23.9664 -90.4114 37 5 0.484544 24.2012 -87.9887 38 5 0.53594 24.4884 -85.309 39 5 0.591776 24.8386 -82.3501 40 6 0.646431 25.2565 -78.4715 41 6 0.706302 25.7554 -74.2337 42 7 0.765456 26.3413 -68.8755 43 9 0.830953 27.0318 -61.397 44 10 0.896473 27.8354 -52.4322 45 10 0.970094 28.7765 -42.7313 46 13 1.04505 29.8687 -29.1456 Page 16

47 15 1.13113 31.1481 -12.1787 48 16 1.22123 32.6395 7.36099 49 16 1.32854 34.4045 28.6176 50 17 1.44663 36.4973 53.2104 51 18 1.59819 39.0515 81.9778 52 20.5 1.78661 42.2435 118.603

Sample Standard Deviation 4.47189 Numerator = 14066.8 Denominator = 43928.4 = 52 42.2435 W Statistic = 0.32022 5% Critical value of 0.957 exceeds 0.32022 Evidence of non-normality at 95% level of significance 1% Critical value of 0.938 exceeds 0.32022 Evidence of non-normality at 99% level of significance Page 17

Kruskal-Wallis Non-Parametric Test Parameter: 1,1-Dichloroethane Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Kruskal Wallis Ranks Background Wells Well 10 Date Result Rank GWA-15/MW-157/30/2002 ND<5 20 9/24/2002 ND<5 20 10/21/2002 - ND<5 20 1213/2002 ND<5 20 6/24/2003 ND<5 20 12/17/2003 ND<5 20 6/15/2004 ND<5 20 12/28/2004 ND<5 20 6/14/2005 ND<5 20 Rank Sum = 180 Rank Mean = 20 Background Rank Sum = 180 Background Rank Mean = 20 Compliance Wells Well 10 Date Result Rank GWA-7/MW-7 7/30/2002 - ND<5 20 9/24/2002 ND<5 20 10/21/2002 ND<5 20 1213/2002 ND<5 20 6/24/2003 ND<5 20 12/17/2003 ND<5 20 6/15/2004 ND<5 20 12/28/2004 - ND<5 20 6/14/2005 ND<5 20 Rank Sum = 180 Rank Mean = 20 GWB-6/MW-6 7/30/2002 ND<5 20 9/24/2002 ND<5 20 10/21/2002 ND<5 20 12/3/2002 ND<5 20 6/24/2003 ND<5 20 12/17/2003 ND<5 20 6/15/2004 ND<5 20 12/28/2004 ND<5 20 6/13/2005 ND<5 20 Rank Sum = 180 Rank Mean = 20 GWC-13/MW-137/30/2002 ND<5 20 9/24/2002 6 40 10/21/2002 6 41 Page 18

12/3/2002 7 42 6124/2003 - 9 43 12/17/2003 - 20.5 52 6/1512004 - 18 51 12128/2004 16 48 6/13/2005 - 15 47

Rank Sum 384

Rank Mean 42.6667 GWC-14/MW-147/30/2002 13 46 9/24/2002 - 21 53 10/21/2002 17 50 12/312002 16 49 6124/2003 10 44 12/17/2003 10 45

Rank Sum 287

Rank Mean 47.8333 GWC-5/MW-5 7/3012002 ND<5 20 9/24/2002 ND<5 20 10/21/2002 ND<5 20 12/312002 ND<5 20 6/24/2003 ND<5 20 12/17/2003 ND<5 20 6/1512004 ND<5 20 12/28/2004 ND<5 20 6/1312005 ND<5 20

Rank Sum 180

Rank Mean 20 GWC-17/MW-176/15/2005 ND<5 20

Rank Sum 20

Rank Mean 20 GWC-181MW-186/15/2005 ND<5 20

Rank Sum 20

Rank Mean 20 Calculation Results: Kruskal-Wallis H Statistic = 27.9881 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 46.5168 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 27.9881 > 14.0671 indicating a significant group difference at 5% significance level 46.5168> 14.0671 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 20 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 20 o 16.936 GWB-6/MW-6 20 o 16936 GWC-13/MW-1342.6667 22.6667 16.936 GWC-14/MW-14478333 27.8333 18.9351 GWC-5/MW-5 20 o 16.936 GWC-17/MW-1720 o 37.8701 Page 19

GWC-18/MW-1820 o 37.8701 Individual Well Comparisons at Groupwise 5% Significance L.evel (0.714286% Significance Level per comparison) 0.714286% Z score is 2.45727 Mean background rank is 20 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 20 o 17.8892 GWB-6/MW-6 20 o 17.8892 GWC-13/MW-1342.6667 22.6667 17.8892 GWC-14/MW-1447.8333 27.8333 20.0008 GWC-5/MW-5 20 o 17.8892 GWC-17/MW-1720 o 40.0015 GWC-18/MW-1820 o 40.0015 Page 20

Concentrations (J,lg/L) Parameter: Carbon disulfide Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Samples: 53 Total Non-Detect: 52 Percent Non-Detects: 98.1132% Total Background Samples: 9 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-159 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 - ND<5 ND<5 12/3/2002 ND<100 ND<100 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12/28/2004 ND<5 ND<5 6/14/2005 ND<5 ND<5 There are 7 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 9 9 (100%) 7/30/2002 - ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/3/2002 ND<100 ND<100 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/1512004 ND<5 ND<5 12/28/2004 - ND<5 NP<5 6/1412005 ND<5 ND<5 GWB-6/MW-6 9 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 1213/2002 ND<100 ND<100 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/1512004 ND<5 ND<5 12/28/2004 ND<5 ND<5 6/1312005 ND<5 ND<5 GWC-13/MW-139 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/312002 ND<100 ND<100 6/24/2003 - ND<5 ND<5 12/17/2003 - ND<5 ND<5 6/1512004 - ND<5 ND<5 12/28/2004 ND<5 ND<5 6/1312005 - ND<5 ND<5 Page 21

GWC-14/MW-146 6 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 - ND<5 ND<5 10/21/2002 ND<5 ND<5 12/3/2002 ND<100 ND<100 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 GWC-5/MW-5 9 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/3/2002 ND<100 ND<100 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12128/2004 ND<5 ND<5 6/13/2005 ND<5 ND<5 GWC-17/MW-171 0(0%) 6/15/2005 32 32 GWC-18/MW-181 1 (100%) 6/15/2005 ND<5 ND<5 There are 2 unused wells Well Samples ND Date Result Original EO-Blank 5 5 (100%) 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12/28/2004 - ND<5 ND<5 6/15/2005 ND<5 ND<5 Trip Blank 2 2 (100%) 12/17/2003 ND<5 ND<5 6113/2005 ND<5 ND<5 Page 22

Shapiro-Francia Test of Normality Parameter: Carbon disulfide All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Sample Size = 53 i x(i} m(i} sum(mJ\2} sum(mx} o 0 o o o 1 5 -2.09693 4.39712 -10.4847 2 5 -1.78661 7.5891 -19.4177 3 5 -1.59819 10.1433 -27.4087 4 5 -1.44663 12.2361 -34.6418 5 5 -1.32854 14.0011 -41.2845 6 5 -1.22123 15.4925 -47.3907 7 5 -1.13113 16.7719 -53.0463 8 5 -1.04505 17.8641 -58.2716 9 5 -0.970094 18.8052 -63.1221 10 5 -0.896473 19.6088 -67.6044 11 5 -0.830953 20.2993 -71.7592 12 5 -0.765456 20.8852 -75.5865 13 5 -0.706302 21.3841 -79.118 14 5 -0.646431 21.802 -82.3501 15 5 -0.591776 22.1522 -85.309 16 5 -0.53594 22.4394 -87.9887 17 5 -0.484544 22.6742 -90.4114 18 5 -0.431644 22.8605 -92.5697 19 5 -0.382622 23.0069 -94.4828 20 5 -0.331854 23.117 -96.142 21 5 -0.284535 23.198 -97.5647 22 5 -0.235269 23.2533 -98.7411 23 5 -0.189118 23.2891 -99.6867 24 5 -0.140835 23.3089 -100.391 25 5 -0.0953969 23.318 -100.868 26 5 -0.0476439 23.3203 -101.106 27 5 o 23.3203 -101.106 28 5 0.0476439 23.3226 -100.868 29 5 0.0953969 23.3317 -100.391 30 5 0.140835 23.3515 -99.6867 31 5 0.189118 23.3873 -98.7411 32 5 0.235269 23.4426 -97.5647 33 5 0.284535 23.5236 -96.142 34 5 0.331854 23.6337 -94.4828 35 5 0.382622 23.7801 -92.5697 36 5 0.431644 23.9664 -90.4114 37 5 0.484544 24.2012 -87.9887 38 5 0.53594 24.4884 -85.309 39 5 0.591776 24.8386 -82.3501 40 5 0.646431 25.2565 -79.118 41 5 0.706302 25.7554 -75.5865 42 5 0.765456 26.3413 -71.7592 43 5 0.830953 27.0318 -67.6044 44 5 0.896473 27.8354 -63.1221 45 5 0.970094 28.7765 -58.2716 46 5 1.04505 29.8687 -53.0463 Page 23

47 32 1.13113 31.1481 -16.8501 48 100 1.22123 32.6395 105.273 49 100 1.32854 34.4045 238.127 50 100 1.44663 36.4973 382.79 51 100 1.59819 39.0515 542.609 52 100 1.78661 42.2435 721.27 Sample Standard Deviation = 30.431 Numerator = 520231

             =                =

Denominator 2.03421e+006 52 42.2435 W Statistic = 0.255742 5% Critical value of 0.957 exceeds 0.255742 Evidence of non-normality at 95% level of significance 1% Critical value of 0.938 exceeds 0.255742 Evidence of non-normality at 99% level of significance Page 24

Kruskal-Wallis Non-Parametric Test Parameter: Carbon disulfide Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<5 26.5 9/24/2002 ND<5 26.5 10/21/2002 - ND<5 26.5 12/3/2002 ND<100 26.5 6/24/2003 ND<5 26.5 12/17/2003 ND<5 26.5 6/15/2004 ND<5 26.5 12128/2004 ND<5 26.5 6/14/2005 ND<5 26.5 Rank Sum = 238.5

Rank Mean 26.5 Background Rank Sum = 238.5 Background Rank Mean = 26.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - ND<5 26.5 9/24/2002 ND<5 26.5 10/21/2002 ND<5 26.5 12/3/2002 ND<100 26.5 6/24/2003 ND<5 26.5 12/17/2003 ND<5 26.5 6/15/2004 ND<5 26.5 12/28/2004 - ND<5 26.5 6/14/2005 ND<5 26.5 Rank Sum = 238.5 Rank Mean = 26.5 GWB-6/MW-6 7/30/2002 ND<5 26.5 9/24/2002 ND<5 26.5 10/21/2002 ND<5 26.5 1213/2002 ND<100 26.5 6/24/2003 ND<5 26.5 12/17/2003 ND<5 26.5 6/15/2004 ND<5 26.5 12/28/2004 ND<5 26.5 6/13/2005 ND<5 26.5 Rank Sum = 238.5 Rank Mean = 26.5 GWC-13/MW-137/30/2002 ND<5 26.5 9/24/2002 ND<5 26.5 10/21/2002 ND<5 26.5 Page 25

12/3/2002 ND<100 26.5 6/24/2003 - ND<5 26.5 12/17/2003 - ND<5 26.5 6/15/2004 - ND<5 26.5 12/28/2004 ND<5 26.5 6/13/2005 - ND<5 26.5

Rank Sum 238.5

Rank Mean 26.5 GWC-14/MW-147/30/2002 ND<5 26.5 9/24/2002 - ND<5 26.5 10/21/2002 ND<5 26.5 12/3/2002 ND<100 26.5 6/24/2003 ND<5 26.5 12/17/2003 ND<5 26.5

Rank Sum 159

Rank Mean 26.5 GWC-5/MW-5 7/30/2002 ND<5 26.5 9/24/2002 ND<5 26.5 10/21/2002 ND<5 26.5 12/3/2002 ND<100 26.5 6/24/2003 ND<5 26.5 12117/2003 ND<5 26.5 6/15/2004 ND<5 26.5 12/28/2004 ND<5 26.5 6/13/2005 ND<5 26.5

Rank Sum 238.5

Rank Mean 26.5 GWC-17/MW-176/15/2005 32 53

Rank Sum 53

Rank Mean 53 GWC-18/MW-186/15/2005 ND<5 26.5

Rank Sum 26.5

Rank Mean 26.5 Calculation Results: Kruskal-Wallis H Statistic = 2.88889 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 52 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 2.88889 < 14.0671 indicating no significant group difference at 5% significance level 52> 14.0671 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 26.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 26.5 o 16.936 GWB-6/MW-6 26.5 o 16.936 GWC-131MW-1326.5 o 16.936 GWC-14/MW-1426.5 o 18.9351 GWC-5/MW-5 26.5 o 16.936 GWC-17/MW-1753 26.5 37.8701 Page 26

GWC-18/MW-1826.5 o 37.8701 Individual Well Comparisons at Groupwise 5% Significance Level (0.714286% Significance Level per comparison) 0.714286% Z score is 2.45727 Mean background rank is 26.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 26.5 o 17.8892 GWB-6/MW-6 26.5 o 17.8892 GWC-13/MW-1326.5 o 17.8892 GWC-14/MW-1426.5 o 20.0008 GWC-5/MW-5 26.5 o 17.8892 GWC-17/MW-1753 26.5 40.0015 GWC-18/MW-1826.5 o 40.0015 Page 27

Concentrations (lJg/L) Parameter: cis-1,2-Dichloroethene Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Samples: 53 Total Non-Detect: 42 Percent Non-Detects: 79.2453% Total Background Samples: 9 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-159 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 - ND<5 ND<5 1213/2002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12/28/2004 ND<5 ND<5 6/14/2005 ND<5 ND<5 There are 7 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 9 9 (100%) 7/30/2002 - ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 1213/2002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/15/2004 ND<5 NP<5 12/28/2004 - ND<5 NP<5 6/14/2005 ND<5 ND<5 GWB-6/MW-6 9 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/3/2002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12128/2004 ND<5 ND<5 6/13/2005 ND<5 ND<5 GWC-13/MW-139 4 (44.4444%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/3/2002 ND<5 ND<5 6/24/2003 - 6 6 12117/2003 - 14 14 6/15/2004 - 9.5 9.5 12/28/2004 8 8 6/1312005 - 8 8 Page 28

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 9 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/3/2002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12/28/2004 ND<5 ND<5 6/13/2005 ND<5 ND<5 GWC-17/MW-171 1 (100%) 6/15/2005 ND<5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<5 ND<5 There are 2 unused wells Well Samples ND Date Result Original EO-Blank 5 5 (100%) 6/24/2003 ND<5 ND<5 12117/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12/28/2004 - ND<5 ND<5 6/15/2005 ND<5 ND<5 Trip Blank 2 2 (100%) 12/17/2003 ND<5 ND<5 6/13/2005 ND<5 ND<5 Page 29

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 Detection Limit Total Sample Size = 53 i x(i) m(i) sum(mI\2) sum(mx) 0 0 0 0 0 1 5 -2.09693 4.39712 -10.4847 2 5 -1.78661 7.5891 -19.4177 3 5 -1.59819 10.1433 -27.4087 4 5 -1.44663 12.2361 -34.6418 5 5 -1.32854 14.0011 -41.2845 6 5 -1.22123 15.4925 -47.3907 7 5 -1.13113 16.7719 -53.0463 8 5 -1.04505 17.8641 -58.2716 9 5 -0.970094 18.8052 -63.1221 10 5 -0.896473 19.6088 -67.6044 11 5 -0.830953 20.2993 -71.7592 12 5 -0.765456 20.8852 -75.5865 13 5 -0.706302 21.3841 -79.118 14 5 -0.646431 21.802 -82.3501 15 5 -0.591776 22.1522 -85.309 16 5 -0.53594 22.4394 -87.9887 17 5 -0.484544 22.6742 -90.4114 ,~ 18 5 -0.431644 22.8605 -92.5697 19 5 -0.382622 23.0069 -94.4828 20 5 -0.331854 23.117 -96.142 21 5 -0.284535 23.198 -97.5647 22 5 -0.235269 23.2533 -98.7411 23 5 -0.189118 23.2891 -99.6867 24 5 -0.140835 23.3089 -100.391 25 5 -0.0953969 23.318 -100.868 26 5 -0.0476439 23.3203 -101.106 27 5 0 23.3203 -101.106 28 5 0.0476439 23.3226 -100.868 29 5 0.0953969 23.3317 -100.391 30 5 0.140835 23.3515 -99.6867 31 5 0.189118 23.3873 -98.7411 32 5 0.235269 23.4426 -97.5647 33 5 0.284535 23.5236 -96.142 34 5 0.331854 23.6337 -94.4828 35 5 0.382622 23.7801 -92.5697 36 5 0.431644 23.9664 -90.4114 37 5 0.484544 24.2012 -87.9887 38 5 0.53594 24.4884 -85.309 39 5 0.591776 24.8386 -82.3501 40 5 0.646431 25.2565 -79.118 41 5 0.706302 25.7554 -75.5865 42 5 0.765456 26.3413 -71.7592 43 6 0.830953 27.0318 -66.7735 44 8 0.896473 27.8354 -59.6017 45 8 0.970094 28.7765 -51.8409 46 9.5 1.04505 29.8687 -41.913 Page 30

47 10 1.13113 31.1481 -30.6016 48 10 1.22123 32.6395 -18.3894 49 14 1.32854 34.4045 0.210207 50 16 1.44663 36.4973 23.3563 51 17 1.59819 39.0515 50.5256 52 18.5 1.78661 42.2435 83.5779 Sample Standard Deviation = 3.64192

Numerator 6985.27

             =          =

Denominator 29135.6 52 42.2435 W Statistic = 0.23975 5% Critical value of 0.957 exceeds 0.23975 Evidence of non-normality at 95% level of significance 1% Critical value of 0.938 exceeds 0.23975 Evidence of non-normality at 99% level of significance Page 31

Kruskal-Wallis Non-Parametric Test Parameter: cis-1,2-Dichloroethene Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<5 21.5 9/24/2002 ND<5 21.5 10/21/2002 - ND<5 21.5 12/3/2002 ND<5 21.5 6/24/2003 ND<5 21.5 12/17/2003 ND<5 21.5 6/15/2004 ND<5 21.5 12128/2004 ND<5 21.5 6/14/2005 ND<5 21.5

Rank Sum 193.5

Rank Mean 21.5

Background Rank Sum 193.5 Background Rank Mean 21.5= Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - ND<5 21.5 9/24/2002 ND<5 21.5 10/21/2002 ND<5 21.5 12/3/2002 ND<5 21.5 6/24/2003 ND<5 21.5 12/17/2003 ND<5 21.5 6/15/2004 ND<5 21.5 12128/2004 - ND<5 21.5 6/14/2005 ND<5 21.5

Rank Sum 193.5

Rank Mean 21.5 GWB-6/MW-6 7/30/2002 ND<5 21.5 9/24/2002 ND<5 21.5 10/21/2002 ND<5 21.5 12/3/2002 ND<5 21.5 6/24/2003 ND<5 21.5 12/17/2003 ND<5 21.5 6/15/2004 ND<5 21.5 12/28/2004 ND<5 21.5 6/13/2005 ND<5 21.5

Rank Sum 193.5

Rank Mean 21.5 GWC-13/MW-137/30/2002 ND<5 21.5 9/24/2002 ND<5 21.5 10/21/2002 ND<5 21.5 Page 32

12/3/2002 ND<5 21.5 6/24/2003 - 6 43 12117/2003 - 14 49 6/15/2004 - 9.5 46 12/28/2004 8 44 6/13/2005 - 8 45

Rank Sum 313

Rank Mean 34.7778 GWC-14/MW-147/30/2002 10 47 9/24/2002 - 18.5 52 10/21/2002 16 50 1213/2002 19 53 6/24/2003 10 48 12/17/2003 17 51

Rank Sum 301

Rank Mean 50.1667 GWC-5/MW-5 7/30/2002 ND<5 21.5 9/24/2002 ND<5 21.5 10/21/2002 ND<5 21.5 12/3/2002 ND<5 21.5 6/24/2003 ND<5 21.5 12117/2003 ND<5 21.5 6/15/2004 ND<5 21.5 12128/2004 ND<5 21.5 6/13/2005 ND<5 21.5

Rank Sum 193.5

Rank Mean 21.5 GWC-17/MW-176/15/2005 ND<5 21.5

Rank Sum 21.5

Rank Mean 21.5 GWC-18/MW-186/15/2005 ND<5 21.5

Rank Sum 21.5

Rank Mean 21.5 Calculation Results: Kruskal-Wallis H Statistic = 20.6042 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 41.0068 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 20.6042> 14.0671 indicating a significant group difference at 5% significance level 41.0068 > 14.0671 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 21.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 215 o 16936 GWB-6/MW-6 21.5 o 16936 GWC-13/MW-1334 7778 13.2778 16.936 GWC-14/MW-1450.1667 28.6667 18.9351 GWC-5/MW-5 215 o 16.936 GWC-17/MW-1721.5 o 37.8701 Page 33

GWC-18/MW-1821.5 o 37.8701 Individual Well Comparisons at Groupwise 5% Significance Level (0.714286% Significance Level per comparison) 0.714286% Z score is 2.45727 Mean background rank is 21.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 21.5 o 17.8892 GWB-6/MW-6 21.5 o 17.8892 GWC-13/MW-1334.7778 13.2778 17.8892 GWC-14/MW-1450.1667 28.6667 20.0008 GWC-5/MW-5 21.5 o 17.8892 GWC-17/MW-1721.5 o 40.0015 GWC-18/MW-1821.5 o 400015 Page 34

.~ Concentrations (lJg/L) Parameter: Trichlorofluoromethane Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Samples: 53 Total Non-Detect: 30 Percent Non-Detects: 56.6038% Total Background Samples: 9 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-159 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 - ND<5 ND<5 1213/2002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12117/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12/28/2004 ND<5 ND<5 6/14/2005 ND<5 ND<5 There are 7 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 9 0(0%) 7/3012002 - 184.5 184.5 9/24/2002 32 32 10/21/2002 221 221 12/312002 210 210 6/24/2003 23 23 12/17/2003 34 34 611512004 46 4q 12/28/2004 - 144 144 6/14/2005 22 22 GWB-6/MW-6 9 9 (100%) 7/30/2002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/3/2002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/1512004 ND<5 ND<5 12/28/2004 ND<5 ND<5 6/1312005 ND<5 ND<5 GWC-13/MW-139 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 6/1512004 - 127 127 12/28/2004 81 81 6/1312005 - 45.5 45.5 Page 35

GWC-14/MW-146 1 (16.6667%) 7/30/2002 43 43 9/24/2002 - 47.5 47.5 10/21/2002 31 31 12/312002 27 27 6124/2003 5 5 12/17/2003 ND<5 ND<5 GWC-5/MW-5 9 9 (100%) 7/3012002 ND<5 ND<5 9/24/2002 ND<5 ND<5 10/21/2002 ND<5 ND<5 12/312002 ND<5 ND<5 6/24/2003 ND<5 ND<5 12/17/2003 ND<5 ND<5 6/1512004 ND<5 ND<5 12128/2004 ND<5 ND<5 6/13/2005 ND<5 ND<5 GWC-17/MW-171 1 (100%) 6/15/2005 ND<5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<5 ND<5 There are 2 unused wells Well Samples NO Date Result Original EO-Blank 5 5 (100%) 6/24/2003 ND<5 ND<5 12117/2003 ND<5 ND<5 6/15/2004 ND<5 ND<5 12/28/2004 - ND<5 ND<5 6/1512005 ND<5 ND<5 Trip Blank 2 2 (100%) 12/17/2003 ND<5 ND<5 6/1312005 ND<5 ND<5 Page 36

Shapiro-Francia Test of Normality Parameter: Trichlorofluoromethane All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Sample Size = 53 i xCi) m(i) sum(mJ\2) sum(mx) o 0 o o o 1 5 -2.09693 4.39712 -10.4847 2 5 -1.78661 7.5891 -19.4177 3 5 -1.59819 10.1433 -27.4087 4 5 -1.44663 12.2361 -34.6418 5 5 -1.32854 14.0011 -41.2845 6 5 -1.22123 15.4925 -47.3907 7 5 -1.13113 16.7719 -53.0463 8 5 -1.04505 17.8641 -58.2716 9 5 -0.970094 18.8052 -63.1221 10 5 -0.896473 19.6088 -67.6044 11 5 -0.830953 20.2993 -71.7592 12 5 -0.765456 20.8852 -75.5865 13 5 -0.706302 21.3841 -79.118 14 5 -0.646431 21.802 -82.3501 15 5 -0.591776 22.1522 -85.309 16 5 -0.53594 22.4394 -87.9887 17 5 -0.484544 22.6742 -90.4114 18 5 -0.431644 22.8605 -92.5697 19 5 -0.382622 23.0069 -94.4828 20 5 -0.331854 23.117 -96.142 21 5 -0.284535 23.198 -97.5647 22 5 -0.235269 23.2533 -98.7411 23 5 -0.189118 23.2891 -99.6867 24 5 -0.140835 23.3089 -100.391 25 5 -0.0953969 23.318 -100.868 26 5 -0.0476439 23.3203 -101.106 27 5 o 23.3203 -101.106 28 5 0.0476439 23.3226 -100.868 29 5 0.0953969 23.3317 -100.391 30 5 0.140835 23.3515 -99.6867 31 5 0.189118 23.3873 -98.7411 32 22 0.235269 23.4426 -93.5651 33 23 0.284535 23.5236 -87.0208 34 27 0.331854 23.6337 -78.0608 35 31 0.382622 23.7801 -66.1995 36 32 0.431644 23.9664 -52.3869 37 34 0.484544 24.2012 -35.9124 38 43 0.53594 24.4884 -12.867 39 44 0.591776 24.8386 13.1712 40 45.5 0.646431 25.2565 42.5838 41 46 0.706302 25.7554 75.0737 42 47.5 0.765456 26.3413 111.433 43 81 0.830953 27.0318 178.74 44 99.5 0.896473 27.8354 267.939 45 127 0.970094 28.7765 391.141 46 144 1.04505 29.8687 541.628 Page 37

47 184.5 1.13113 31.1481 750.322 48 210 1.22123 32.6395 1006.78 49 221 1.32854 34.4045 1300.39 50 300 1.44663 36.4973 1734.38 51 348 1.59819 39.0515 2290.55 52 381 1.78661 42.2435 2971.25

Sample Standard Deviation 101.082 Numerator = 8.82831e+006

             =                =

Denominator 2.24445e+007 52 42.2435 W Statistic = 0.393339 5% Critical value of 0.957 exceeds 0.393339 Evidence of non-normality at 95% level of significance 1% Critical value of 0.938 exceeds 0.393339 Evidence of non-normality at 99% level of significance Page 38

Kruskal-Wallis Non-Parametric Test Parameter: Trichlorofluoromethane Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<5 15.5 9/24/2002 ND<5 15.5 10/21/2002 - ND<5 15.5 12/3/2002 ND<5 15.5 6/24/2003 ND<5 15.5 12/17/2003 ND<5 15.5 6/15/2004 ND<5 15.5 12128/2004 ND<5 15.5 6/14/2005 ND<5 15.5 Rank Sum = 139.5 Rank Mean = 15.5 Background Rank Sum = 139.5 Background Rank Mean 15.5= Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - 184.5 47 9/24/2002 32 36 10/21/2002 221 49 1213/2002 210 48 6/24/2003 23 33 12/17/2003 34 37 6/15/2004 46 41 12/28/2004 - 144 46 6/14/2005 22 32 Rank Sum = 369 Rank Mean 41= GWB-6/MW-6 7/30/2002 ND<5 15.5 9/24/2002 ND<5 15.5 10/21/2002 ND<5 15.5 12/3/2002 ND<5 15.5 6/24/2003 ND<5 15.5 12/17/2003 ND<5 15.5 6/15/2004 ND<5 15.5 12/28/2004 ND<5 15.5 6/13/2005 ND<5 15.5 Rank Sum = 139.5 Rank Mean = 15.5 GWC-13/MW-137/30/2002 300 50 9/24/2002 381 52 10/21/2002 348 51 Page 39

1213/2002 391 53 6/24/2003 - 44 39 12/17/2003 - 99.5 44 6/1512004 - 127 45 12/28/2004 81 43 611312005 - 45.5 40

Rank Sum 417

Rank Mean 46.3333 GWC-14/MW-147/30/2002 43 38 9/24/2002 - 47.5 42 10/21/2002 31 35 12/312002 27 34 6124/2003 5 31 12/17/2003 ND<5 15.5

Rank Sum 195.5

Rank Mean 32.5833 GWC-5/MW-5 7/3012002 ND<5 15.5 9/24/2002 ND<5 15.5 10/21/2002 ND<5 15.5 12/312002 ND<5 15.5 6/24/2003 ND<5 15.5 12/17/2003 ND<5 15.5 6/1512004 ND<5 15.5 12128/2004 ND<5 15.5 6/13/2005 ND<5 15.5

Rank Sum 139.5

Rank Mean 15.5 GWC-17/MW-176/15/2005 ND<5 15.5

Rank Sum 15.5

Rank Mean 15.5 GWC-18/MW-186/15/2005 ND<5 15.5

Rank Sum 15.5

Rank Mean 15.5 Calculation Results: Kruskal-Wallis H Statistic = 38.366 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 46.8576 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 38.366> 14.0671 indicating a significant group difference at 5% significance level 46.8576> 14.0671 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 15.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 41 25.5 16.936 GWB-6/MW-6 15.5 o 16.936 GWC-13/MW-1346.3333 30.8333 16.936 GWC-14/MW-1432.5833 17.0833 18.9351 GWC-5/MW-5 15.5 o 16.936 GWC-17/MW-1715.5 o 37.8701 Page 40

GWC-18/MW-1815.5 o 37.8701 Individual Well Comparisons at Groupwise 5% Significance Level (0.714286% Significance Level per comparison) 0.714286% Z score is 2.45727 Mean background rank is 15.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 41 25.5 17.8892 GWB-6/MW-6 15.5 o 17.8892 GWC-13/MW-1346.3333 30.8333 17.8892 GWC-14/MW-1432.5833 17.0833 20.0008 GWC-5/MW-5 15.5 o 17.8892 GWC-17/MW-1715.5 o 40.0015 GWC-18/MW-1815.5 o 40.0015 Page 41

~ Concentrations (mg/L) Parameter: Mercury Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Samples: 26 Total Non-Detect: 20 Percent Non-Detects: 76.9231 % Total Background Samples: 5 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-155 4 (80%) 6/24/2003 ND<0.0005 ND<0.0005 12117/2003 ND<0.0005 ND<0.0005 6/15/2004 ND<0.0005 ND<0.0005 12/28/2004 0.0004 0.0004 6/14/2005 ND<0.0005 ND<0.0005 There are 7 compliance wells Well Samples NO Date Result Original GWC-13/MW-135 4 (80%) 6/24/2003 - 0.0005 0.0005 12/17/2003 - ND<0.0005 ND<0.0005 6115/2004 - ND<0.0005 ND<0.0005 12/28/2004 ND<0.0005 ND<0.0005 6113/2005 - ND<0.0005 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 4 2 (50%) 12/17/2003 ND<0.0005 ND<0.0005 6/15/2004 0.0006 0.0006 12128/2004 - 0.0013 0.9013 6114/2005 ND<0.0005 ND<0.0005 GWB-6/MW-6 4 4 (100%) 12/17/2003 ND<0.0005 ND<0.0005 6115/2004 ND<0.0005 ND<0.0005 12128/2004 ND<0.0005 ND<0.0005 6/13/2005 ND<0.0005 ND<0.0005 GWC-5/MW-5 4 4 (100%) 12/17/2003 ND<0.0005 ND<0.0005 6/15/2004 ND<0.0005 ND<0.0005 12/28/2004 ND<0.0005 ND<0.0005 6/13/2005 ND<0.0005 ND<0.0005 GWC-17/MW-171 1 (100%) 6/15/2005 ND<0.0005 ND<0.0005 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.0005 ND<0.0005 There is 1 unused well Well Samples NO Date Result Original EO-Blank 5 5 (100%) 6/24/2003 ND<0.0005 ND<0.0005 12/17/2003 ND<0.0005 ND<0.0005 Page 42

6115/2004 ND<0.0005 ND<0.0005 12128/2004 - ND<0.0005 ND<0.0005 611512005 ND<0.0005 ND<0.0005 Page 43

Shapiro-Francia Test of Normality Parameter: Mercury All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Sample Size = 26 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 0.0004 -1.78661 3.19198 -0.000714645 2 0.0005 -1.44663 5.28473 -0.00143796 3 0.0005 -1.22123 6.77613 -0.00204858 4 0.0005 -1.04505 7.86826 -0.0025711 5 0.0005 -0.896473 8.67192 -0.00301934 6 0.0005 -0.765456 9.25784 -0.00340206 7 0.0005 -0.646431 9.67572 -0.00372528 8 0.0005 -0.53594 9.96295 -0.00399325 9 0.0005 -0.431644 10.1493 -0.00420907 10 0.0005 -0.331854 10.2594 -0.004375 11 0.0005 -0.235269 10.3147 -0.00449263 12 Q0005 -0.140835 10.3346 -0.00456305 13 0.0005 -0.0476439 10.3368 -0.00458687 14 0.0005 0.0476439 10.3391 -0.00456305 15 0.0005 0.140835 10.359 -0.00449263 16 0.0005 0.235269 10.4143 -0.004375 17 0.0005 0.331854 10.5244 -0.00420907 18 0.0005 0.431644 10.7107 -0.00399325 19 0.0005 0.53594 10.998 -0.00372528 20 0.0005 0.646431 11.4159 -0.00340206 21 0.0005 0.765456 12.0018 -0.00301934 22 0.0005 0.896473 12.8054 -0.0025711 23 0.0006 1.04505 13.8976 -0.00194407 24 0.0013 1.22123 15.389 -0.000356473 25 0.0072 1.44663 17.4817 0.0100593 Sample Standard Deviation = 0.00223325 Numerator =0.000101189 Denominator = 0.0021797 = 2517.4817 W Statistic = 0.0464234 5% Critical value of 0.943 exceeds 0.0464234 Evidence of non-normality at 95% level of significance 1% Critical value of 0.919 exceeds 0.0464234 Evidence of non-normality at 99% level of significance Page 44

Kruskal-Wallis Non-Parametric Test Parameter: Mercury Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-156/24/2003 ND<0.0005 10.5 12117/2003 ND<0.0005 10.5 6/15/2004 ND<0.0005 10.5 12/28/2004 0.0004 21 6/14/2005 ND<0.0005 10.5 Rank Sum = 63 Rank Mean = 12.6 Background Rank Sum = 63 Background Rank Mean = 12.6 Compliance Wells WelllD Date Result Rank GWC-13/MW-136/24/2003 - 0.0005 22 12117/2003 - ND<0.0005 10.5 6/15/2004 - ND<0.0005 10.5 12128/2004 ND<0.0005 10.5 6/13/2005 - ND<0.0005 10.5 Rank Sum =64 Rank Mean = 12.8 GWC-14/MW-146/24/2003 0.0072 25 12/17/2003 0.01 26 Rank Sum = 51 Rank Mean = 25.5 GWA-7/MW-7 12/17/2003 ND<0.0005 10.5 6/15/2004 0.0006 23 12/28/2004 - 0.0013 24 6/14/2005 ND<0.0005 10.5 Rank Sum = 68 Rank Mean = 17 GWB-6/MW-6 12/17/2003 ND<0.0005 10.5 6/15/2004 ND<0.0005 10.5 12/28/2004 ND<0.0005 10.5 6/13/2005 ND<0.0005 10.5 Rank Sum = 42 Rank Mean = 10.5 GWC-5/MW-5 12/17/2003 ND<0.0005 10.5 6/15/2004 ND<0.0005 10.5 12/28/2004 ND<0.0005 10.5 6/13/2005 ND<0.0005 10.5 Page 45

Rank Sum = 42 Rank Mean = 10.5 GWC-17/MW-176/15/2005 ND<0.0005 10.5 Rank Sum = 10.5 Rank Mean = 10.5 GWC-18/MW-186/15/2005 ND<0.0005 10.5 Rank Sum = 10.5 Rank Mean = 10.5 Calculation Results:

Kruskal-Wallis H Statistic 7.41026 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 13.5893 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 7.41026 < 14.0671 indicating no significant group difference at 5% significance level 13.5893 < 14.0671 indicating no significant group difference at 5% significance level when adjusted for ties

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