ML073300634

Groundwater Monitoring Report - Plant Vogtle Landfills #2 and #3, Solid Waste Permit Nos. 017-006D(L)(I), Burke County, Georgia, April 2006

ML073300634
Person / Time
Site:	Vogtle
Issue date:	04/28/2006
From:	Godfrey J Southern Nuclear Operating Co
To:	Sean Mcmanus Office of Nuclear Reactor Regulation, State of GA, Environmental Protection Div
References
017-006D(L)(I), EV-06-0893, No. 017-007D(L)(I)
Download: ML073300634 (228)

Text

Southern Nuclear Operating Company, Inc.

42 Inverness Center Parkway Birmingham, Alabama 35242 SOUTHERN COMPANY A.

Energy to Serve Your WorldS' File: E.03.41 April 28, 2006 Log: EV-06-0893 FEDERAL EXPRESS Vogtle Electric Generating Plant Landfills #2 and #3 Solid Waste Permit No. 017-006D(L)(I)

Solid Waste Permit No. 017-007D(L)(I)

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

Dear Mr. McManus:

In response to your telephone request, Southern Nuclear has prepared individual landfill groundwater monitoring reports from the December, 2005 Vogtle Landfill #2 and

1. 3 combined report. The combined report was submitted to EPD under a Southern Nuclear correspondence dated March 27, 2006. It is understood that EPD prefers individual reports for each Vogtle landfill for this, and future groundwater monitoring events to facilitate report filing. The information and conclusions provided in these individual groundwater monitoring reports remains unchanged since the March 27 submittal of the combined report.

Please find enclosed both individual December, 2005 groundwater monitoring reports for Vogtle Landfill #2 and Landfill #3 attached under this correspondence. Future groundwater monitoring reports will be submitted under two separate cover letters to the EPD Solid Waste Management Program Manager. If you have any questions, please contact Mickey Perry at (205) 992-6994.

Sincerely,

/if ~i r*.. */00

/

./ fL\v'V\ .. j L// l--LU'1 IJ. M. Godfrey" . /

Manager - Environmental Affarrs v

JMG/MEP:ahl Enclosure

EV-06-0893 Page 2 Georgia Environmental Protection Division Mr. Steve McManus cc: Mr. Michael Kemp (w/o)

Mr. Earl Hinkle (w/o)

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

EV-06-0893 Page 3 Georgia Environmental Protection Division Mr. Steve McManus bc: T. E. Tynan (w/o)

P. D. Rushton (w/o)

N. D. Dennis (w/o)

C. L. Buck (w/o)

S. A. Varnum (w/o)

J. A. Joyner (w/o)

D. G. Goodwin (Return Receipt)

SNC Document Management - Vogtle (Return Receipt)

GROUNDWATER MONITORING REPORT PLANT VOGTLE LANDFILL #2 SOLID WASTE PERMIT No. 017-006D(L)(I)

BURKE COUNTY, GEORGIA APRIL 2006 PREPARED FOR:

Southern Nuclear Operating Company, Inc.

40 Inverness Center Parkway Birmingham, Alabama 35201 PREPARED By:

Kurt R. Batsel, P.E.

Georgia License Number 16594 The Dextra Group, Inc.

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

GROUNDWATER MONITORING REPORT PLANT VOGTLE LANDFILL #2 SOLID WASTE PERMIT No. 017-006D(L)(I)

BURKE COUNTY, GEORGIA APRIL 2006 PREPARED FOR:

Southern Nuclear Operating Company, Inc.

40 Inverness Center Parkway Birmingham, Alabama 35201 PREPARED By:

Kurt R. Batsel, P.E.

Georgia License Number 16594 The Dextra Group, Inc.

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

TABLE OF CONTENTS 1 - Introduction 1 2 - Monitoring Well Network 1 3 - Groundwater Flow Rate and Directional Data 1 3.1 Geology/Hydrogeology 3.2 Groundwater Elevations and Gradients 4 - Sampling Procedures and Parameter Analyses 3 4.1 Ptocedures and Field Measurements 4.2 Parameter Analyses 5 - Groundwater Quality Evaluation 4 5.1 Detected Parameters 5.2 Statistical Analyses 6 - Conclusions 4 In Order Following Page 4 Tables 1 - Groundwater Elevations and Morutoring Well Construction Details 2 - Groundwater Sampling Field Measurements 3 - Constituents for Detection Morutoring 4 - Summary of Detected Parameters Figures 1 - Groundwater Contour Elevation Map, December 6-7, 2005 Appendices A - Hydraulic Gradient Calculation Sheet B - Laboratory Analytical Report C - Statistical Analyses

1 - Introduction This report presents the results of groundwater sampling conducted in December Z005 at private solid waste Landfill #Z 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 landfill is operated under Solid Waste Permit #s 017-006D(L)(I) and is 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 is used only for asbestos disposal.

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 December 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 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). 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 landfill, which occur from approximately 35 to 60 feet below land surface.

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-Z and the downgradient, or compliance, wells are GWC-3/MW-3, GWB-4/MW-4 and GWC-ll /MW-11. The well construction details are presented in Table 1. The wells will be referred to as GWA-Z, GWC-3, GWB-4 and GWC-ll in this report consistent with the EPD's well identification guidelines.

3 - Groundwater Flow Rate and Directional Data

3. 1 Geol0f!JI/ Hydrogeol0f!JI The geology of the Plant Vogtle 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 Utley 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 landfill. Underlying the Barnwell Group is the Lisbon Formation with its uppermost unit, the Blue Bluff Marl, located immediately under the Utley Limestone. This marl layer, approximately 70 feet

thick, is a near-impermeable layer that effectively confines the Tertiary and Cretaceous aquifers, the two confined aquifers beneath the Plant site.

The occurrence of groundwater underlying the landfill appears in confined, semi-confined, unconfined, and perched hydrogeologic units. Groundwater is found primarily in sands, silty sands, 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 sand/clay ratio and the characteristics of the marl/limestone interface.

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

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

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

Hydraulic conductivity (K) in the wells was measured on September 26, 2001. The values ranged from 5.634 x 10.4 em/sec in GWB-6 to 3.064 x 10- 2 em/sec in GWA-2.

Depth to water measurements and groundwater elevations for the wells at Landftll 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 landftll (GWA-2) to relatively lower elevations to the west/ southwest beneath the landfill (Figure 1). Well GWC-l1 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 0.014 (shown on Figure 1 for December 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 (June 2003).

2

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 in the field daily prior to use and at the conclusion of each sampling event. The field measurements are provided in Table 2.

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

• The pump and air line were placed on dean 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 Parameter AnalYses In accordance with the approved Groundwater Monitoring Plan, the groundwater samples and field and laboratory quality assurance/quality control (QA/Qc) samples were analyzed for the Chapter 391-3-4 AppendiX I list of parameters, which consists of total metals and volatile organic compounds (Table 4). 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.

5 - Groundwater Quality Evaluation 5.1 Detected Parameters Table 4 presents a summary of all analyzed parameters detected above the laboratory method reporting limits. Barium was detected at 0.025 milligrams per liter (mg/l) in well GWC-3 and 0.021 mg/l in GWB-4. The maximum contaminant level (MCL) for barium is 2.0 mg/I. Zinc was detected 3

at 0.08 mg/l in well GWA-2, 0.137 mg/l in well GWC-3, 0.082 mg/l in well GWB-4 and 0.181 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.

5.2 5tatistica/ Ana!Jses 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 the landfill, 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.

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.

6 - Conclusions As no statistically significant detections were found during this monitoring event, no modifications to the monitoring program or additional notices in the operating record are required at this time.

4

TABLES Table 1 Southern Nuclear Operating Company Plant Vogtle Landfill #2 Groundwater Elevations and Monitoring Well Construction Details Total Boring Total Well Riser Screened Groundwater Measuring Point Elevation Ground Surface Elevation Depth to Water Depth Depth Height Interval Elevation WelllD Date (feet, msl) (feet, mst) (feet, topvcl (feet. bls) (feet, topvc) (feet) (feet, msl) (feet, msl)

GWA-2/MW-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 12/5/2005 40.40 209.01 GWC-3/MW-3 9/26/2001 250.41 247.81 50.45 62 52.60 2.60 197.81 to 207.81 199.96 7/29/2002 5005 200.36 9/9/2002 50.79 199.62 10/21/2002 49.30 201.11 12/3/2002 50.26 200.15 6/24/2003 51.58 198.83 12117/2003 47.89 202.52 611512004 47.44 202.97 12/28/2004 49.13 201.28 6/1312005 46.77 203.64 12/5/2005 47.34 203.07 GWB-4/MW-4 9/26/2001 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 12/4/2002 39.65 202.75 6/24/2003 38.10 204.30 12/17/2003 39.53 202.87 6/15/2004 39.46 202.94 12128/2004 40.02 202.38 6/13/2005 38.96 203.44 12/5/2005 39.70 202.70 GWC-l1/MW-ll 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 12/4/2002 65.49 162.04 6/24/2003 59.72 167.81 12/17/2003 5933 168.20 6/15/2004 60.69 166.84 12/28/2004 62.71 164.82 6/13/2005 62.96 164.57 12/5/2005 62.73 164.80 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.

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Table 2 Southern Nuclear Operating Company Plant VogUe Landfill #2 Groundwater Sampling Field Measurements Gallons WelllD Dale pH Conductivity'1 Turbiditv'2 Purned Odor Color Comments GWA-2/MW-2 9/26/2001 -- - -- Well development only 7129/2002 4.69 19 13.8 2.5 none none 9/912002 4.51 24.9 7.53 -- none none 10121/2002 5.17 18 1.31 3.1 none none 121312002 5.30 13 9.1 3.5 none none 6124/2003 6.28 26.9 5.76 1.0 none none 1211712003 4.93 22.7 4.5 3.5 none none 6/16/2004 6.97 15.32 5.9 1.5 none none 12128/2004 4.80 10.3 9.67 2.0 none none 6/14/2005 5.28 17.8 8.65 2.5 none none 12/6/2005 6.82 17 6.36 2.0 none none GWC-3/MW-3 9/2612001 -- - - - -- - Well development only 7129/2002 4.08 27.9 22.2 1.3 none none 9/912002 6.03 36.5 4.08 0.5 none none 10/21/2002 -- 176 35.6 <0.5 gal -- -- Too little water to purge and sample 12/312002 5.51 488 14.0 <0.5 gal -- -- Too little water to purge and sample 6/24/2003 -- - - <0.5 gal none none Tao little water to purge and sample 1211712003 6.59 22.7 2.79 2.0 none none 6/16/2004 4.91 40.8 5.78 1.25 none none 12128/2004 -- - - - -- - Too little water to purge and sample 6/14/2005 5.83 29.5 4.25 1.25 none none 12/6/2005 5.88 35 5.89 1.50 none none GWB-4/MW-4 9/26/2001 4.73 36.0 15.5 35.0 -- -- Well development only 7/29/2002 4.21 269 3.63 2.0 none none 9/912002 4.35 34.8 0.55 2.0 none none 10/21/2002 5.01 25 6.44 3.0 none none 12/412002 5.51 98.7 2.60 4.0 none none 6/24/2003 5.33 36.0 5.27 2.0 none none 1211712003 4.62 3.55 0.00 1.5 none none 6/16/2004 4.63 33.80 1.40 3.3 none none 12/28/2004 4.43 20.70 0.00 2.0 none none 6/1412005 4.66 38.25 2.50 2.5 none none 121712005 4.80 43.00 2.08 1.5 none none GWC-11/MW-ll 7/29/2002 5.30 67.5 36.6 4.0 none pale white 9/9/2oo2 6.24 97.0 6.51 2.0 none none 10/21/2002 5.05 75.0 8.05 1.8 none none 12/412002 5.72 57.1 8.10 2.0 none none 6/24/2003 6.93 70.0 2.70 2.5 none none 12/17/2003 7.04 69.2 11.2 4.5 none none 6/16/2004 6.10 58.9 6.1 3.5 none none 12/28/2004 5.85 30.5 9.3 2.0 none none 6/1412005 5.98 33.2 8.6 2.5 none none 12/7/2005 5.95 32.0 3.0 2.0 none none Notes:

-- ::: no data recorded

/1 - Conductivity in units of umhos/sec 12 - Turbidity in units of NTU 10f1

Table 3 Southern Nuclear Operating Company Plant Vogtle Landfill #2 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/7 520 (11) Selenium . 6010B/7741 (12) Silver . 6010B/7761 (13) Thallium . 6010B/7841 (14) Vanadium . 6010B/7911 (15) Zinc . 6010B/7951 Organic Constituents: 8260 (16) Acetone .

(17) Acrylonitrile .

(18) Benzene .

(19) Bromochloromethane .

(20) Bromodichloromethane .

(21) Bromoform; Tribromomethane .

(22) Carbon disulfide .

(23) Carbon tetrachloride .

(24) Chlorobenzene .

(25) Chloroethane; Ethyl chloride .

(26) Chloroform; Trichloromethane .

(27) Dibromochloromethane; Chlorodibromomethane .

(28) 1,2-Dibromo-3-chloropropane; DBep .

(29) 1,2-Dibromoethane; Ethylene dibromide; EDB .

(30) o-Dichlorobenzene; 1,2-Dichlorobenzene .

(31) p-Dichlorobenzene; 1,4-Dichlorobenzene .

(32) trans-1,4-Dichloro-2-butene .

(33) 1,1-Dichloroethane; Ethylidene chloride .

(34) 1,2-Dichloroethane; Ethylene dichloride .

(35) 1,1-Dichloroethylene; 1,1-Dichloroethene; Vinylidene chloride .

(36) cis-1,2-Dichloroethylene; cis-1,2-Dichloroethene .

(37) trans-1,2-Dichloroethylene; trans-1,2-Dichloroethene (38) 1,2-Dichloropropane; Propylene dichloride .

(39) cis-1,3-Dichloropropene .

(40) trans-1,3-Dichloropropene .

(41) Ethylbenzene .

(42) 2-Hexanone; Methyl butyl ketone .

(43) Methyl bromide; Bromomethane .

(44) Methyl chloride; Chloromethane .

Page 1 of 2

Table 3 (continued)

Southern Nuclear Operating Company, Inc.

Plant Vogtle Landfill #2 Appendix I to Part 40 CPR Part 258: Constituents for Detection Monitoring (1)

Cornmon 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; CFe-ll .

(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, I I 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.

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Table 4 Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters December 2005 WEll SAMPLES CONSTITUENT MCl GWA-2/MW-2 GWC-3/MW-3 GWS-4/MW-4 GWC-11/MW-11 1

Metals Barium 2.00 BOl 0.025 0.021 BOl Zinc NA 0.08 0.137 0.082 0.181 2

Organics 1,1-Dichloroethane NA Sal Sal Sal Sal Chlorobenzene 100 Sal Sal Sal BOl 1,4-Dicholorbenzene 75 SOL SOL Sal Sal Methylene chloride 5 SOL SOL SOL Sal cis-1 ,2-Dichloroethene 70 Sal SOL SOL Sal Trichlorofluoromethane NA Sal SOL SOL Sal 1,1-Dichloroethene 7 SOL SOL SOL SOL Xylenes (Total) 10000 Sal SOL SOL Sal Vinyl chloride 2 BOl Sal SOL 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 1 Metals concentrations in mg/l or ppm 20rganics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL.

Page 1 of 10

Table 4 (Continued)

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 1

Metals Sarium 2.00 0.021 Sal 0.042 0.034 Zinc NA Sal Sal 0.029 0.025 Organics2 1,1-Dichloroethane NA SOL SOL SOL SOL Chlorobenzene 100 SOL SOL SOL SOL 1,4-Dicholorbenzene 75 Sal SOL SOL SOL Methylene chloride 5 Sal Sal Sal SOL 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 1 Metals concentrations in mg/l or ppm 20rganics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL.

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Table 4 (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 Metals1 Sarium 2.00 SOL NS 0.021 SOL Zinc NA SOL NS SOL SOL Organics2 1,1-Dichloroethane NA SOL NS SOL SOL Chlorobenzene 100 SOL NS SOL SOL 1,4-Dicholorbenzene 75 SOL NS SOL SOL Methylene chloride 5 SOL NS SOL SOL cis-1,2-Dichloroethene 70 SOL NS SOL SOL Trichlorofluoromethane NA SOL NS SOL SOL 1,1-Dichloroethene 7 SOL NS SOL SOL Xylenes (Total) 10000 SOL NS SOL SOL Vinyl chloride 2 SOL NS SOL 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 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.

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Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters June 2004 WELL SAMPLES CONSTITUENT MCL GWA-2fMW-2 GWC-3fMW-3 GWS-4fMW-4 GWC-11fMW-11 1

Metals Sarium 2.00 SOL 0.020 SOL SOL Zinc NA SOL SOL SOL SOL 2

Organics 1,1-Dichloroethane NA SOL SOL SOL SOL Chlorobenzene 100 SOL SOL SOL SOL 1,4-Dicholorbenzene 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 7 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 1Metals concentrations in mgfL or ppm 20rganics concentrations in ug/l or ppb Bold indicates detected concentration is greater than the MCL.

Page 4 of 10

Table 4 (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' 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 SOL SOL SOL Trichlorofluoromethane NA Sal Sal 6 Sal 1,1-Dichloroethene 7 Sal Sal Sal SOL 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 20rganics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCl.

Page 5 of 10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters June 2003 WELL SAMPLES CONSTITUENT MCL GWA-2/MW-2 GWC-3/MW-3 GWS-4/MW-4 GWC-11/MW-11 1

Metals Sarium 2.00 SOL NS SOL SOL Zinc NA SOL NS SOL 0.029 2

Organics 1,1-Dichloroethane NA SOL NS SOL SOL Chlorobenzene 100 SOL NS SOL SOL 1,4-Dicholorbenzene 75 SOL NS SOL SOL Methylene chloride 5 SOL NS SOL SOL cis-1 ,2-Dichloroethene 70 SOL NS SOL SOL Trichlorofluoromethane NA SOL NS SOL SOL 1,1-Dichloroethene 7 SOL NS SOL SOL Xylenes (Total) 10000 SOL NS SOL SOL Vinyl chloride 2 SOL NS SOL 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 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 6 of 10

Table 4 (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.D15 0.020 0.021 0.020 0.018 Zinc NA SOL 0.047 SOL SOL SOL 2

Organics 1,1-Dichloroethane NA SOL SOL SOL SOL SOL Chlorobenzene 100 SOL SOL SOL SOL SOL 1,4-Dicholorbenzene 75 SOL SOL SOL SOL SOL Methylene chloride 5 SOL SOL SOL SOL SOL cis-1,2-Dichloroethene 70 SOL SOL SOL SOL SOL Trichlorofluoromethane NA SOL SOL SOL SOL SOL 1,1-Dichloroethene 7 SOL SOL SOL SOL SOL Xylenes (Total) 10000 SOL SOL SOL SOL SOL Vinyl chloride 2 SOL SOL SOL SOL SOL SOL - 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/l or ppb Bold indicates detected concentration is greater than the MCL.

Page 7 of 10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #2 Summary of Detected Parameters October 2002 WEll SAMPLES CONSTITUENT MCl GWA-2/MW-2 GWC-3/MW-3 3 GWS-4/MW-4 GWC-11/MW-11 1

Metals 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 1,4-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 1 Metals concentrations in mg/l or ppm 20rganics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL.

Page 8 of 10

Table 4 (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 Sal Sal 0.021 0.020 Zinc NA Sal Sal Sal Sal organlcs. 2 1,1-Dichloroethane NA Sal Sal Sal Sal Chlorobenzene 100 Sal Sal Sal Sal 1A-Dichlorobenzene 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 SOL SOL SOL 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 1 Metals concentrations in mg/l or ppm 20rganics concentrations in ug/I or ppb Bold indicates detected concentration is greater than the MCL.

Page 9 of 10

Table 4 (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 GWS-4/MW-4 GWC-11/MW-11 Metals1 Barium 2 0.027 BOl 0.021 0.085 Zinc NA SOL SOL SOL 0.034 2

Organics 1,1-Dichloroethane NA SOL BOl BOl BOl Chlorobenzene 100 BOl BOl BOl BOl 1A-Dichlorobenzene 75 BOl 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/I or ppb Bold indicates detected concentration is greater than the MCL.

Page 10 of 10

FIGURE M.p"""""""'BRIAm.1~Pm<h....,Ci.,.GA BFJ ~JRCllnOl~

Do\TaOf'PHO'J'OGL\fttY:1I2I/3lDl

- -ISO - - F.XlSTINGCON!'OUII.

- -250 - - FINAL CONTOl!lI.

MM" ill GWCNi.:'*\1

• GROUNDWATER MONflUIlING WElL GlI.OUNDWATEREUWATION WASTE MANAGHMnN'rtJNlf!BUI'PBIl BOL'NDAIlYM.UKEIl ABANDONED son.. BOJ.ING POTBNTIO!\l£ETRlCCONTOl.JR1.fNB ATIPl"!NTI'.RVAI-S i _ 0.06 GkOUNDWATERG1I.AD1ENT

/' GkOUNDWATEIlFLO'lVDlIlECTION

\ '}

BOLT TOTAL 8L DBl"IHBL limo! ftmol J2O!l6JJOIO 111127.9617 251M 232.<49 11'103.17<41 8651.<4921 nUl 214.41 11053.0012 1I2lP.57.3B "".""

~7J.(Wm 229.28

l4J..a2

~.28 216,02

'.' ,11'

." I

.:':"~\~\~

. , ,,'~\-,

ApPENDIX A - HYDRAULIC GRADIENT CALCULATION SHEET

Plant Vogtle Landfill #2 Gradient Calculation (based on three-point problem)

December 2005 Monitoring Event Water Table Well Designation Elevation Northing Easting GWA-2/MW-2 209.01 11755.95 9622.59 GWC-3/MW-3 203.07 12048.48 8881.72 GWB-4/MW-4 202.7 11205.40 9466.20 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 + CZ 3 + d =0 where (Xi,Yi) are the coordinates of the well and zi is the head, i = 1,2,3 2

The gradient is calculated from the square root of (a2 + b )

Southwest Gradient Wells of Interest = (GWA-2, GWC-3 & GWB-4) (High-Mid-Low) x Y z GWA-2/MW-2 11755.95 9622.59 209.01 GWC-3/MW-3 12048.48 8881.72 203.07 GWB-4/MW-4 11205.40 9466.20 202.7 9622.59 209.01 1 a= 8881.72 203.07 1 3745.9331 9466.20 202.7 1 1=

11755.95 209.01 1 b= 12048.48 203.07 1 -5116.131 11205.40 202.7 1 1=

11755.95 9622.59 c= 12048.48 8881.72 -453634.7 11205.40 9466.20 1=

11755.95 9622.59 209.01 d= 12048.48 8881.72 203.07 -1546762 11205.40 9466.20 202.7 1=

zO = -3.409707915 mx= 0.008257597 my= -0.011278085 ISouthwest Gradient- 0. 014 1 Page 1 of 1

ApPENDIX B - LABORATORY ANALYTICAL REPORT DECEMBER 2005

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1. 154 Date Received: 1210612005 Marietta. GA 30068-0000 Date Reported: 12120/2005

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Date AnalyZed: 1211312005 ACL Sample #: 238729 Units: 1J9/L Analyst: RP Analyta Besult & An!J~ Resylt fQb Acetone Sal 100 Styrene Sal 5 Acrylonltrfle saL 50 1,1.1,2-Tetrachloroethane BOL 5 Benzene BOL 5 1,1,2,2*Tetrachloroethane eOl 5 Bromochloromethane BOl 5 Tetrachloroethene eOL 5 Bromodlchloromethane BOl 5 Toluene BOl 5 Bromoform BOl 5 '.1.1*Trichloroethane eOl 5 Carbon disulfide BOl 5 1,1,2-Trichloroethane eOL 5 Carbon tetrachloride eOL 5 Trlchloroethene eOl 5 Chlorobenzene aOL 5 Trichlorofluoromethane BQl 5 Chloroethane eOL 10 1.2,3-Trlchloropropane eOL 5 Chloroform eOL 5 Vinyl acetate Bal 50 1.2-0Ibromo-3-chloropropane BOL 20 Vinyl chloride BOL 2 Dibromochloromethane BOL 5 m & p-Xylenes BOl 10 1.2-Dlbromoethane BOL 5 o-Xylene BOl 5 trans*1,4*0Ichloro-2*butene eOl 10 1,2-Dlchlorobenzane aOL 5 1A-Dichlorobenzene aOL 5 1,1*Pichloroethane SOl. S 1,2*0Ichloroethane eOl 5 1, '-Oichloroethene BOL 5 cls-1.2-Dichloroethane BOL 5 tran6-1,2-Dlchloroethene BOL 5 1.2*Dlchloropropane BQl 5 cls-1.3*0Ichloropropene BOl 5 trans*1,3-0ichloropropena BOl 5 Ethylbenzene eOL 5 2*Hesxanone eOL 50 Methyl bromide eaL 10 Methyl chlorides BOL 10 Methyl ethyl ketone BOl 100 Methyl iodIde eOl 5 4-Methyl*2-pentanone BOL 50 Methylene bromide eOL 5 Methylene chloride BaL 5

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• Appendix I SamplelD: GWC-3/MW-3 Matrix: Water Oate Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACL Sample #: 238730 Units: Analyst: RP AnaMe Bpsult f9I: AnlMe Result fQb Acatone aCl. 100 Styrene eaL 5 Acrylonitrile SCL 50 1,1,1,2-Tetrachloroethane Bat. 5 Benzene aaL 5 1,1,2.2-Tetrachloroethane eaL 5 BromochlDromethane BOl e Tetrachloroethane Bal- 5 Bromodlchloromethane SOl 5 Toluene BOL 5 Bromoform eOl 5 1,1.1-Trichloroethane eal 5 Carbon disulfide Bat. 5 1,1,2-Trichloroethane eaL 5 Carbon tetrachloride eal 5 Trichloroethane Bal 5 Chlorobe~ene aaL 5 Trichlorofluaromethane BOI- 5 Chloroethane eaL 10 1,2,3-Trlchloropropane BOL 5

-Chlorafol'm eal 5 VInyl acetate eOL 50 1.2-0Ibromo-3-cl1toropropane eaL 20 VInyl chloride eal 2 Oibromochloromethane eaL 5 m & p-Xy/enes eal 10 1,2-0lbromoethane Sal. 5 o-Xylene eal 5 trans*1,4*0Ichlaro-2-bulene eaL 10 1,2-Dlchlorobsnzene BOL 5

',4*Dichlorobenzene eal 5 1,1-Dlchloroethane sal 5 1.2-0Ichloroethane BCl 5 1.1-Dichloroethene eaL 5 cis-1.2-0Ichloroethene eaL 5 trans-1,2-0Ichloroethene BaL 5 1,2-Dichloropropane Bal 5 cis-1,3-Dlchlcropropene aal 5 trans-1,3-0ichloropropene eal 5

-""j ;penzene aaL 5 2-Hexanona 130L 50 Methyl bromide eOL '0 Methyl chloride BOl 10 Methyl ethyl ketona eaL 100 MelhyilodlQ8 aaL 5 4-Mothyl-2~pentanone eal 50 Methylene bromide SOL 5 Methylene chloride eal 5

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Date Analyzed: 12/13/2005 ACL Sample #: 238731 Units: IJg/L Analyst: RP AnaM' RBsult em: AnaMe ResYll W Acetone BOL 100 Styrene eal 5 Acrylonitrile aaL 50 1.1.1,2-Tetrachloroethana BQl 5 aenzene SOL 5 1.'.2,2-TeUachloroethana sal 5 BromochlQromethane sal 5 Tetrachloroethane aOL 5 Bromodlchloromethane eOl 5 Toluene eal 5 Bromoform BOl 5 1,1.1-Trichloroethane eOL 5 Carbon disulfide eOl 5 1.1.2-Trichloroethane SOL 5 Carbon tetrachloride aOL 5 Trlchloroethene SOL 5 Chlorobenzene eal 5 Tr1chlorofluoromethane BOL 5 Chloroethane BOL 10 1.2,3*Trichloropropane eOl 5 Chloroform eaL 5 Vinyl acetllte BOl 50 1,2-Dibromo-3-chloropropane eOL 20 Vinyl chloride eal 2 DibromochlorDmethane aaL 5 m & p-Xylene5 eOL 10 1,2*Qibromoethane eOL 5 o-Xylene SOL 5 tran5-1,4-0lchloro-2-butene eOL 10 1,2-Dlchlorobenzene eOL 5 1A-Dichlorobenzene SQl 5 1.1-0ichlaroethane aaL 5 1.2-0Ichloroethane BOl 5 1,1-Dlchloroethena aaL 5 cls-1 ,2-Dlchloroethene eOl 5 trans-1,2-Dlchlcroethene eOL 5 1,2-Dlchloropropane Sal 5 cis-1,3-0lchloropropene eOL 5 lrans*1,3-Plchloropropene eOL 5 Ethylbenzene SOL 5 2-Hexanone SQl 50 Mathyl bromide eal 10 Methyl chlorlds SaL 10 Methyl ethyl ketone BOl 100 MeUlyl Iodide aOL 5 4-Methyl-2-pentanone Bal 50 Methylene bromide eal 5 Methylene chloride BOl 5

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• Appendix I Sample 10: GWC-11/MW..11 Matrix: Water Date Sampled: 12/0612005 Date Extracted:

Cille Analyzed: 12/13/2005 ACL Sample #: 238732 UnIts: ~g/l Analyst: RP Analvte Result e9b Analyte B!w!I! fQb Acetone BQl 100 Styrene eOl 5 Acrylonitrile BOl 50 ',1.1,2-Tetraohloroethane BOl 5 Benzene Sal 6 1,1.2.2-Tetrachloroethane SOL 5 Bromochloromethane BQL 5 Tetrachloroethane BOL 5 Bromodichloromethane BOL 5 Toluene BQL 5 Bromoform SOL 5 " " 1*Trichloroethane eOl S Carbon disulfide eQl 5 1.1,2*Trlchloroethane BOl 5 Carbon tetrachloride BOL 5 Trichloroethane eOL. S Chlorobenzene eaL 5 Trichlorofluoromethane BOL. S Chloroethane BQL 10 1,2,3-Trichloropropane 80L 5 Chloroform BOL 5 Vinyl acetate BOL. 50

',2-Dibromo-3--chloropro pane eOl 20 Vinyl Chloride eOl 2 Dlbromochloromethane BOL 5 m & p-Xylenes BaL. '0 1.2-0Ibromoethane BOl 5 a-Xylene eOl 5 trans-' ,4-Dlctlloro-2-butene BOl 10 1,2-Dichlorobenzene BOL 5 1A-Oichlorobenl.sne eQL 5 1.1-0Ichloroethane BQL 5 1.2-01chloroethane BOt. S 1.1-Dlchloroetheno BOL 5 cis-' ,2-0Ichloroolhene BOl 5 trans-1.2*Dlchloroethene BOL. 5

, ,2*0Ichloropropane BQ!. 5 cls~ 1,a-OIChloropropene SOL 5 trans-1,3-0Ichloropropene BOl 5 Ethylbsnzene BOl 5 2-Hexanone Sal so Methyl bromide BOl 10 Mathyl chloride Bat 10 Methyl ethyl ketone eOl 100 MemyllodJde BOl 5 4-Methyl-2-pentanone SOL 50 Methylene bromlcfe Sal s Methylena chlol'icte Sal 5

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/20/2005

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Mr. Kurt Batsel Miscellaneous Organics (8011)

• Appendix II Sample ID: GWA~2JMW-2 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 ACL Sample t#: 238729 Unit&: ..,gJL Analyst: TM AnalV!& Reslill fQb 1,2-0Ibromo-3-chloropropane Sal 0.20 1.2-Dlbromoethane Sal 0.05

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1. 154 Date ReceIved: 12/08/2005 Marietta, GA 30068..Q000 Date Reported: 12/20/2005

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Mr. Kun 6atssl Miscellaneous Organics (8011)

• Appendix II Sample 10: GWC-3/MW-3 MatrIx; Water Date Sampled: 12/0612005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 ACL Sample #: 238730 Units: ~g/L Analyst: TM ADalyte Result fQb 1.2~Pibromo.3-chloropropane BOl. 0.20 1,2*Pibromoethane eOL 0.05

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068*0000 Date Reported: 12/2012005

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Mr. Kurt Batsel Miscellaneous Organics (8011)

• Appendix II Sample 10: GWB-4/MW-4 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 ACL Sample #: 238731 Units: ~g/L Analyst: TM Analyle Result fQJ; 1,2-Dibromo-3-chlorapropane eOl 0.20 1.2-Dibromoathane eOl 0.05

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 1212012005

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Mr. Kurt Batsal Miscellaneous Organics (8011)

• Appendix II Sample 10: GWC-11/MW-11 MatrIx: Water Date Sampled: 12/0612005 Date Extracted: 12/13/2005 Date Analyzed: 1211412005 ACL Sample t#: 238732 Units: 1-l9/L Anillyst: TM Analvt! Resylt fQb 1.2-Dlbrcmo-3-chloropropane saL 0.20 1,2*Dibromoathane BQL 0.05

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1. 154 Date Received: 12108/2005 Marietta. GA 30068-0000 Date Reported: 12/20/2005

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Mr. Kurt Batsel AppendiX I Metals (6010B/7841/7041)

Sample 10: GWA-2/MW*2 Matrix: water Date Sampled: 12106/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACL. Sample #: 238729 Units; mglL Analyst: SW Analvte Res\IU fQb Antimony BOl 0.006 ArsenIc BOL 0.010 BarIum BOL 0.020 Beryllium eOL 0.004 Cadmium BOL 0,005 Chromium BOL 0,020 Cobalt aOL 0.050 Copper BaL 0.020 l.ead BOI. 0.010 Nickel aOL 0.020 Selenium BOl 0.040 Silver BOl 0.010 Thallium eal 0.002 Vanadium BaL 0.050 Zinc 0.080 0.020

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1. 154 Date Received: 12/0BI2005 Marietta, GA 30068*0000 Date Reparted:- --1212012005

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Mr. Kurt Batsal Appendix I Metals (6010SnS4117041)

SamplelD: GWC-3/MW-3 Matrix: Water Date Sampled: 1210612005 Date Extracted:

Date Analyzed: 12/13/2005 ACl Sample #: 238730 Units: mg/L Analyst: SW Analyt, Besult fQL Antimony BQl 0.006 Arsenic BOL. 0.010 BarIum 0.025 0.020 Beryllium eaL 0.004 Cadmium eal 0.005 Chromium BaL 0.020 Cobalt eaL 0,050 Copper eaL 0.020 Lead BOL. 0.010 Nickel aQL 0.020

'Selenium eOl 0.040 Silver SOL 0.010 Thallium eOL 0.002 Vanadium BQl 0.050 Zinc 0.137 0.020

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• Atlanta. GA 30366

..mllll: aCl@acl-lllbii.net www.advuncec:lchemlslrylabs.com Client: The Dextra Group, LLC Client ProJ #: Vogtle IF#2 4665 Lower Roswell Road ACL Project #: 49406

1. 154 Date Received: 12108/2005 Marietta. GA 30068-0000 Date Reported: 12/20/2005

Contact:

Mr. Kurt Batsal Appendix I Metals (60108/7841/7041)

Sample 10: GWB-4/MW-4 Matrix: Water Date Sampled: 12106/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACL Sample #: 238731 Units; mg/L Analyst: SW Aoglkje Result eQI; Antimony BOl 0.006 Arsenic BOl 0.010 Barium 0.021 0.020 Beryllium eaL 0.004 Cadmium BOL 0.005 Chromium BOl 0.020 Cabalt BOL 0.050 Copper eOL 0.020 Lead eOL. 0.010 Nickel BOL 0.020 Selenium BOL 0.040 Silver eal 0.010 Thallium eaL 0.002 Vanadium BOl 0.050 ZInc 0.082 0.020

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported! 12/20/2005

Contact:

Mr. Kurt aatsel Appendix I Metals (6010B/7841/7041)

Sample 10: GWC-11/MW-11 Matrix: Water Date Sampled: 12106/2005 Date Extracted:

Date Analyzed: 12113/2005 ACL Sample II: 238732 Units: mg/L Analyst: SW Analyle Result fQ.b Antimony eoL. 0.005 Arsenic BQI. 0.010 Barium eOL. 0.020 Beryllium eoL. 0.004 Cadmium eoL. 0.005 Chromium BOL. 0.020 Cobalt aOL. 0.050 Copper eOl 0.020 L.ead eOl 0.010 Nickel eoL. 0.020 Selenium SOL 0.040 Silver BOl 0.010 ThallIum BOl 0.002 Vanadium eOl 0.050 Zinc 0.181 0.020

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• Suits 100

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1. 154 Date Received: 12/08/2005 Marietta, GA 30088..QOOO Date Reported: 12120/2005

Contact:

Mr. Kurt Batsel v.a. (50308/8260B)

• Appendix I SURROGATE PERCENT RECOVERY

SUMMARY

Water Dibromofluoromethane ',2*Dlchloroethane-d4 Toluane-d8 4-Bromofluorobenzsne (77-137) 172-138} {84-1121 (77-125)

ACL Sample #

238729 111 107 104 10B 238730 111 105 105 10B 238731 112 106 105 107 238732 112 107 105 106

• • Ma!rlx Inlarferenca DO=Olluteq Out

IA CL I fax: (77Dl40B-1844 ADVANCED CHEMISTRY Pnone: (no) 4~09-!!""'1~444~------------~3~03~9~A-m-w"'!!lI-er""'!!R-g-.d-'!!S-U~1te-1 LAB~, INC.

....0~D-.A"t1-a-nta-.G!!""'.A.....

P.O. Ball 88610* Atlanta. GA 30366 30""""'a e-mail: acIOBcl-laRs.nel www.advancedc:hemllitryllilbs.com Client: The Dextra Group, LLC Client ProJ #: Vogtle LF#2 4665 Lower Roswell Road ACL Project #: 49406

1. 164 Date Received: 12108/2005 Marietta. GA 30068-0000 Date Reported: 12/20/2005

Contact:

Mr. Kurt Batsel V.C. (5030B/8260B) .. Appendix I Sample 10: --- Matrix:

Date Sampled:

Water

-~--

Date Extracted:

Date Analyzed: 12/1312005 ACL Sample #: Blank Units: 1-l9fL Analyst: RP Analyte Relult P.Qb AnalyJe Resylt f.Qb Acetone eal 100 Styrene BOl. S Acrylonitrile eOL 50 1,1,1,2-Tetrachloroethane BOl S Benzene BOL 5 1,1,2,2-Tetrachloroethane eOl 5 Bromochlorome1hane BOL 5 Tetrachloroethene eOl 5 Bromodichloromethane BOl S Toluene BOl 5 Bromoform BOL 5 ',',1-Trichloroethane BOl 5

. Carbon disulfide aal 5 1,1,2-TrIchloroethane BOl 5 Carbon tetrachloride BOL 5 Trichloroethene BOL 5 Chlorobenzene BOl 5 Trichlorofluoromethane Bal. S Chloroethane BOl 10 1.2,3-Trichloropropane eOL 5 Chloroform BOL S Vinyl acetate BOl 50 1,2-0ibrome-3-chloropropane BOL 20 Vinyl chloride BaL 2 D/bromochloromethane BQl 5 m & p*Xylenes BaL 10

. 1,2-0Ibromoethane BOl 5 a-Xylene BaL 5 trans*1.4-Dichloro-2-blJtene BOL 10

'.2-0ichlorobenzene BOl 5 1,4-0ichlorobenzene BQl 5 1.1-Dlchloroetnane eOL 5 1,2*Dic~loroelhane eOl 5 1, '-Dichloroethene BOl 5 cis-',2-Dlchloroethene BOl !i trans-1.2-Dichloroethene BOl 5 1.2-Dichloropropane eaL S cis-',3-Dlchloropropene Sal s trans-1.3*Dichloropropene BOl 5 E:thylban;zene BOL 5 2-Hexanone BOlo 50 MethYl promide 13QL 10 Methyl chloride BOl 10 Methyl'ethyl ~etone Sal 100 Methyl Iodide eo I.. 5 4-Methyl-2-pentanone BOl 50 Methylene bromide eCl 5 Methylene chloride eOL 5

ADVANCED CHEMISTRY LABS, INC.

GCIMS UNIT # 2 WATER VOLATILe M"TRIX SPII<CJMATRIX SPIKE DUPLICATE RECOVERY Sequence Date: 12-13-05 Matrix Spike - Sample No.: 238718-1 1966 SAMPLE MS MS ac.

ADDeD CONCENTRATION CONCENTRATION  % LIMITS COMPOUND (uom (ualJ) (00/1) REC j REC.

1.1-dichloroethefle 20.0 0.0 19.5 97 54-144) benzene 20.0 0.0 19.6 98 82-132) trichloroethane 20.0 0.0 18.5 92 (73-126) toluene 20.0 0.0 18.7 93 83-130) chlorobenzene 20.0 0.0 18.1 91 88-123)

SPIKE MSD MSD ADDEO CONCENTRATION  %  % QC LIMITS COMPOUND (0011) (Utili) Rec # RPD tI RPD REC.

11 1-Qichloroathene 20.0 19.4 97 1 14 54-' 44) 20.0 96 benzene 19.3 2 11 B2-132) trlchloroetnene 20,0 18.5 82 0 14 73-128) toluene 20.0 18.5 92 13 (83-130) chloroben2:ene 20.0 17.8 89 2 13 (B8-123)

1. Column to be used to flag recovery and RPD vlllues wIth an asterisk

.. Values outside of QC limits RPP: 0 OLlt of 5 outside limits .

Spike Recovery: 0 out of 10 outside limits Comments:

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Fax: enOl 408-1844 P.O. Box B851 D* Atlanta. GA 30366 a-mall: acldPlcl-labG.net www.advanoedchemi&trylabs,oom Client: The Dextra Group, LlC Client ProJ #: Vogtle LF#2 4665 Lower Roswell Road ACL Project #: 49406

1. 154 Oat_ Received: 12108/2005 MarIetta, GA 30068-0000 Date Reported: 12/20/2005

Contact:

Mr. Kurt Batsal Miscellaneous Organics (8011)

• Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water Sromof!uorobenzene (40.140)

ACL Sample #

238729 101 238130 94 238731 96 238732 46

.. Matrix Interference r'lf"I=f'tIl,,,AIlf"\,,f

Phone: (770)

I IACL 40~9~-1-44~4--------------3'!"'!O~39'!""A~m-w~ile-r~R-oa~d-'

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~Su"'!"il-e--10~O-'A"!""l-I~n-ta-,"'!"G-A-3--03~6"!""O P.O. Box 88610* Atlanta, GA 30356 e-mail: ecl@ijcl-Iabli.net www.advancedchemistrylab6.com Client: The Dextra Group, LLC Client Proj #: Vegtle L.F#2 4665 Lower Roswell Road ACL Project #: 49406

1. 154 Date Received: 12/06/2005 Marietta, GA 30068*0000 Date Reported: 12/20/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: *********_. Matrix: Water Date Sampled:

Date Extracted: 12/13/2005 Date Analyzed: 12/13/2005 ACL Sample #: Blank Units: !JQ/L Analyst: TM AnalV!e Result POL

',2*Dibromo-3-chloropropane SaL 0.20 1,2-Dibromoethane SOL 0.05

Advanced Chemistry Labs Ours/de OC limitS Pesticides Spike Report (SW-B46 Method B011/Method 504.1) lnstrumtJnt ID: HP589DA-ECDGC#5 Column: STx*CLP, 30m, O.53mm, O.5pm ACr..#: lCSW121305 Matrix: Water Ex!raction Date: 12/13/05 Analysis Data: 12/13/05 Initial Volume: 35.0 mt Fi"al Volume: 2 O;':.ltioo Factor: 1 Unit; 1JfJ/L or ppb R.T. SpIke Sample idS MS R.T. MSD ",sa RPD QCLimlts P"stlcide MS Added ReSLf'f Cone. RfIt. (1'-') MSD Conc. Ret:. ("J RPD " Recovetv EPa 6.091 0.500 0.000 0,442 II 6.089 0.443 Be 0 25 60 140 rep a.770 0.500 0.000 0.500 100 8.767 0.482 9. 4 25 60 140 DBep 12.104 0.500 a.Uoo 0,421 IU , 2.108 0,386 77 9 25 60 140 OjJls/de QC Ilmirs

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1. 154 Date Received: 12/0812005 Manetta, GA 30068-0000 Date Reported: 12120/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (6010Bn841/7041)

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

Date Extracted:

Date Analyzed: 12/13/2005 ACL Sample #: Blank Units: mg/L Analyst: SW

AoalytG Re6ult BQL-em:

0.006 Antimony Arsenic BaL 0.010 Barium BOL 0.020 Beryllium BOl. 0.004 Cadmium BOI- 0.005 Chromium eal 0.020 Copan eaL 0.050 Copper BOL 0.020 Lead BQI- 0.010 Nickel SQL 0.020 Selenium eaL 0.040 Silver eal 0.010 Thallium SOL. 0.002 Vanadium eOl 0.050 Zinc SOL 0.020

ADVANCED cHeMISTRY LABS. INC.

ICP Metals Water lCS/lCSD Recollflrles Instrument: TJA 51E Trace ICP Date Digested : 12112/05 Date Analyzed : 12/13105 ACL Sample No, : LCS/LCSC*112090S SPIKE Blank LCS L.CS LCSD LeSe Added Result R.sult Recovery Result Recollery ac Limits ANALYTE (ppm) Ippm) (Ppm) (%) # (ppm) (%) # RPP # RPP °4 Recovery Aluminum 1.000 BRl 0.9712 97.1 0.9570 95.7 1.5 20 75 12.5 Antimony 0.040 BRL 0.0354 88.5 0.0356 B8.8 0.3 20 75 125 Arsenic 0.200 BRL 0,'945 97.4 0.1949 97.S 0.1 20 75 125 Barium 1,000 BRl 0.9918 992. 0.9761 Q7.S 1.4 20 7S 125 Beryllium 0.200 BRL 0.2040 l02.o 0.20.11 . 100,6 1,4 20 75 125 Cadmium 0.050 BRL 0.0510 102.0 0.0507 101.4 0.6 20 75 125 Calcium 1.000 BRl 1.0170 101.7 0.9970 99.7 2.0 20 75 125 Chromium 0.200 BRL 0.2061 103.1 0.2039 102.0 1.1 20 75 125 Cobalt 0.200 ~RL Q.2Q5B- 1028. 02030 101.5 1.3 . 20 75 125 Copper 0.200 BRl 0..2045 102.3 0.2014 100.7 '.5 "0 75 125 Iron 0.250 BRL 0.2354 94.2 0,2259 9004 4.1 20 75 125 Lead 0.200 aRI. 0.2070 103.6 0.2049 102.5 1.0 20 75 125 Magnesium '0.200 . 'BRL - .1974 96.7 0.15l45 97.3 1.5 20 75 1:.2.5 MOlybdenum 1.000 BRL 1.0470 104.7 1.0370 103.7 1.0 20 75 125 Nickel 0.200 BRL 0.2052 102.6 0.2027 101.4 1,2 20 75 125 Selenium 0.050 BRL 0.0502 100,4 0.0483 96.6 3.9 20 75 125 Silver 0.020 SRL 0.0225 112.5 0,0222 1110 1.3 20 75 125 Tin 2.000 BRL 2.0390 102.0 .2.0190 1Q1.0 1,0 20 75 125 Thilllium 0.040 BRL 0.0440 110.0 0.0441 110.3 0.2 20 75 125 Vanadium 0.600 BRL 0.5111 102.2- 0.5065 10'\.1 1.1 20 75 P5 Zinc 0.200 BRL 0.2118 105.9 0.2100 105.0 0.9 20 75 125 SRI- denotes results lae\OIN Reporting \-evel'

1. COILlmn to be used to nag recovery and RPO valueli with an asterisk

• Values outside of ac limifl; RPD:O out of 2t outside limits Rec. %: 0 out of 42 QutliiCle limits Comments:

IACL I~~~~~~~A~D~V~~N~"

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1k- /)e,)(frQ qliA Company Name:

CHAIN-OF CUSTODY RECORD AND ANALYSIS llEQUFSr Ar~AL YSIS REOUES-J attest 1nal the proper field samplinfl

'~

prDcedures were used during itle / . ,

&oI\9c1ion oI1hese samples. / \~

Field Matrix Sample 10 Remarks Special Detection Umits Remarks: TAT Special Handling Priam}' (24 hr) 0 ACLComacl 1

Rush (48 Ilr) 0

.....- -ll- -..,..... ...Rush (72 hr) 0 Quote # -----~_I Special RepDrting Requirements Lab Use Only: Cooler Temp, ~N~o~rm~al~-~ll:P;.0:::,:-.======:=.1 I I 12 dOli L """'L ,QAlQC level Fa~C ACL Project #: .., -I ':\ 0 ..J, T u C Level 10 Leval 2 . other U CUSTODY RECORD Relinquishedbl' .

ApPENDIX C - STATISTICAL ANALYSES Concentrations (mg/L)

Parameter: Barium Original Data (Not Transformed)

Non-Detects Replaced with Detection Limit Total Samples: 37 Total Non-Detect: 18 Percent Non-Detects: 48.6486%

Total Background Samples: 10 There is 1 background well Well Samples NO Date Result Original GWA-2/MW-2 10 7 (70%) 7/30/2002 0.027 0.027 9/24/2002 ND<0.02 ND<0.02 10/21/2002 ND<0.02 ND<0.02 12/4/2002 0.015 0.015 6/25f2003 ND<0.02 ND<0.02 12f17f2003 ND<0.02 ND<0.02 6/16/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6/14/2005 0.021 0.021 12/6/2005 ND<0.02 ND<0.02 There are 3 compliance wells Well Samples NO Date Result Original GWB-4/MW-4 10 3 (30%) 7/30/2002 0.021 0.021 9/24/2002 0.021 0.021 10/21/2002 0.021 0.021 12/4/2002 - 0.0205 0.0205 6/25/2003 ND<0.02 ND<0.02 12/17/2003 ND<0.02 ND<0.02 6/16/2004 ND<0.02 ND<0.02 12/28/2004 0.021 0.021 6/14/2005 0.042 0.042 12f6f2005 0.021 0.021 GWC-11/MW-1110 4 (40%) 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<0.02 ND<0.02 12/17/2003 0.022 0.022 6/16/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6/14/2005 0.034 0.034 12/6/2005 ND<0.02 ND<0.02 GWC-3/MW-3 7 4 (57.1429%) 7/30/2002 ND<0.02 ND<0.02 9/24/2002 ND<0.02 ND<0.02 12/4f2002 0.02 0.02 12/17f2003 ND<0.02 ND<0.02 6/16/2004 0.02 0.02 6/14/2005 ND<0.02 ND<0.02 12/6/2005 0.025 0.025 Page 1

There is 1 unused well Well Samples NO Date Result Original EO-Blank 4 4 (100%) 6/25/2003 ND<0.02 ND<0.02 12/17/2003 ND<0.02 ND<0.02 6/16/2004 ND<0.02 ND<0.02 12/28/2004 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 = 37 i x(i) m(i) sum(m"2) sum(mx) o 0 o o o 1 0.015 -1.94314 3.77578 -0.029147 2 0.018 -1.62576 6.41888 -0.0584108 3 0.02 -1.41865 8.43145 -0.0867838 4 0.02 -1.25357 10.0029 -0.111855 5 0.02 -1.12168 11.261 -0.134289 6 0.02 -1.00687 12.2748 -0.154426 7 0.02 -0.900227 13.0852 -0.172431 8 0.02 -0.806422 13.7355 -0.188559 9 0.02 -0.719228 14.2528 -0.202944 10 0.02 -0.634124 14.6549 -0.215626 11 0.02 -0.556308 14.9644 -0.226752 12 0.02 -0.481728 15.1965 -0.236387 13 0.02 -0.40701 15.3621 -0.244527 14 0.02 -0.337155 15.4758 -0.25127 15 0.02 -0.268908 15.5481 -0.256648 16 0.02 -0.199336 15.5879 -0.260635 17 0.02 -0.133244 15.6056 -0.2633 18 0.02 -0.0677301 15.6102 -0.264654 19 0.02 o 15.6102 -0.264654 20 0.02 0.0677301 15.6148 -0.2633 21 0.02 0.133244 15.6325 -0.260635 22 0.02 0.199336 15.6723 -0.256648 23 0.02 0.268908 15.7446 -0.25127 24 0.0205 0.337155 15.8583 -0.244358 25 0.021 0.40701 16.0239 -0.235811 26 0.021 0.481728 16.256 -0.225695 27 0.021 0.556308 16.5655 -0.214012 28 0.021 0.634124 16.9676 -0.200696 29 0.021 0.719228 17.4849 -0.185592 30 0.021 0.806422 18.1352 -0.168657 31 0.022 0.900227 18.9456 -0.148852 32 0.025 1.00687 19.9594 -0.12368 33 0.025 1.12168 21.2175 -0.0956386 34 0.027 1.25357 22.789 -0.0617923 35 0.034 1.41865 24.8015 -0.0135581 36 0.042 1.62576 27.4446 0.0547239 Sample Standard Deviation = 0.0113741 Numerator = 0.00299471

=

Denominator 0.127818 36 27.4446 =

=

W Statistic 0.0234295 Critical value of 0953 exceeds 00234295 EVidence of non**l1ormalify at 95%) lovel of s:qc:fcance

'J \);;! Critical value of 0,935 exceeds U,0234295 Page 3

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-2/MW-2 7/3012002 0.027 34 9/24/2002 ND<0.02 9.5 10/21/2002 ND<0.02 9.5 12/4/2002 0.015 19 6/25/2003 ND<O.02 9.5 12/17/2003 ND<0.02 9.5 6/16/2004 ND<0.02 9.5 12/28/2004 ND<0.02 9.5 6/14/2005 0.021 25 12/6/2005 ND<0.02 9.5

=

Rank Sum 144.5

=

Rank Mean 14.45

=

Background Rank Sum 144.5

=

Background Rank Mean 14.45 Compliance Wells WelllD Date Result Rank GWB-4/MW-4 7/3012002 0.021 26 9/24/2002 0.021 27 10/21/2002 0.021 28 12/412002 - 0.0205 24 6/25/2003 ND<0.02 9.5 12/17/2003 ND<0.02 9.5 6/16/2004 ND<0.02 9.5 12/28/2004 0.021 29 6/1412005 0.042 36 12/6/2005 0.021 30

=

Rank Sum 228.5

=

Rank Mean 22.85 GWC-11/MW-11 7/30/2002 0.085 37 9/24/2002 0.02 21 10/21/2002 0.025 32 12/412002 0.018 20 6/25/2003 ND<0.02 9.5 12/17/2003 0.022 31 6/1612004 ND<0.02 9.5 12/28/2004 ND<0.02 9.5 6/14/2005 0.034 35 12/6/2005 ND<0.02 9.5

=

Rank Sum 214

=

Rank Mean 21.4 Page 4

GWC-3/MW-3 7/30/2002 ND<0.02 9.5 9/24/2002 ND<0.02 9.5 12/4/2002 0.02 22 12/17/2003 ND<0.02 9.5 6116/2004 0.02 23 6/14/2005 ND<0.02 9.5 12/6/2005 0.025 33 Rank Sum = 116 Rank Mean = 16.5714 Calculation Results:

Kruskal-Wallis H Statistic = 3.87598 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 4.37897 95% Confidence comparison value is 7.81472 at 3 degrees of freedom 3.87598 < 7.81472 indicating no significant group difference at 5% significance level 4.37897 < 7.81472 indicating no significant group difference at 5% significance level when adjusted for ties Page 5

Concentrations (mg/L)

Parameter: Zinc Original Data (Not Transformed)

Non-Detects Replaced with Detection Limit Total Samples: 37 Total Non-Detect: 28 Percent Non-Detects: 75.6757%

Total Background Samples: 10 There is 1 background well Well Samples NO Date Result Original GWA-2/MW-2 10 9 (90%) 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 12/4/2002 ND<0.02 ND<0.02 6/25/2003 ND<0.02 ND<0.02 12/17/2003 ND<0.02 ND<0.02 6/16/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6/14/2005 ND<0.02 ND<0.02 12/6/2005 0.08 0.08 There are 3 compliance wells Well Samples NO Date Result Original GWB-4/MW-4 10 8 (80%) 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 12/4/2002 - ND<0.02 ND<0.02 6/25/2003 ND<0.02 ND<0.02 12/17/2003 ND<0.02 ND<0.02 6/16/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6/14/2005 0.029 0.029 12/6/2005 0.082 0.082 GWC-11/MW-1110 6 (60%) 7/30/2002 0.034 0.034 9/24/2002 ND<0.02 ND<0.02 10/21/2002 ND<0.02 ND<0.02 12/4/2002 ND<0.02 ND<0.02 6/25/2003 0.029 0.029 12/17/2003 ND<0.02 ND<0.02 6/16/2004 ND<0.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 6/14/2005 0.025 0.025 12/6/2005 0.181 0.181 GWC-3/MW-3 7 5 (71.4286%) 7/30/2002 ND<0.02 ND<0.02 9/24/2002 ND<0.02 ND<0.02 12/4/2002 0.047 0.047 12/17/2003 ND<0.02 ND<0.02 6/16/2004 ND<0.02 ND<0.02 6/14/2005 ND<0.02 ND<0.02 12/6/2005 0.137 0.137 Page 6

There is 1 unused well Well Samples ND Date Result Original EO-Blank 4 4 (100%) 6/25/2003 ND<0.02 ND<0.02 12/17/2003 ND<O.02 ND<0.02 6/16/2004 ND<O.02 ND<0.02 12/28/2004 ND<0.02 ND<0.02 Page?

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 = 37 i x(i) m(i) sum(m"2) sum(mx) o 0 o o o 1 0.02 -1.94314 3.77578 -0.0388627 2 0.02 -1.62576 6.41888 -0.071378 3 0.02 -1.41865 8.43145 -0.099751 4 0.02 -1.25357 10.0029 -0.124822 5 0.02 -1.12168 11.261 -0.147256 6 0.02 -1.00687 12.2748 -0.167393 7 0.02 -0.900227 13.0852 -0.185398 8 0.02 -0.806422 13.7355 -0.201526 9 0.02 -0.719228 14.2528 -0.215911 10 0.02 -0.634124 14.6549 -0.228593 11 0.02 -0.556308 14.9644 -0.239719 12 0.02 -0.481728 15.1965 -0.249354 13 0.02 -0.40701 15.3621 -0.257494 14 0.02 -0.337155 15.4758 -0.264237 15 0.02 -0.268908 15.5481 -0.269615 16 0.02 -0.199336 15.5879 -0.273602 17 0.02 -0.133244 15.6056 -0.276267 18 0.02 -0.0677301 15.6102 -0.277622 19 0.02 o 15.6102 -0.277622 20 0.02 0.0677301 15.6148 -0.276267 21 0.02 0.133244 15.6325 -0.273602 22 0.02 0.199336 15.6723 -0.269615 23 0.02 0.268908 15.7446 -0.264237 24 0.02 0.337155 15.8583 -0.257494 25 0.02 0.40701 16.0239 -0.249354 26 0.02 0.481728 16.256 -0.239719 27 0.02 0.556308 16.5655 -0.228593 28 0.02 0.634124 16.9676 -0.215911 29 0.025 0.719228 17.4849 -0.19793 30 0.029 0.806422 18.1352 -0.174544 31 0.029 0.900227 18.9456 -0.148437 32 0.034 1.00687 19.9594 -0.114204 33 0.047 1.12168 21.2175 -0.0614849 34 0.08 1.25357 22.789 0.0388003 35 0.082 1.41865 24.8015 0.15513 36 0.137 1.62576 27.4446 0.377859 Sample Standard Deviation = 0.0342974 Numerator = 0.142778 Denominator = 1.1622 = 36 27.4446 W Statistic = 0.122851 Critical value of 0,9:;3 exceeds 0.'1

>,/"1,,,",(-,, of nOiHlOrmdiity at 95%, leve; 01 """',,["---0 1 (~ritk::3i value CfCl.935 exceeds 0.122851 Evidf:.H1Ce of at fJ9fj~> leV8\ of ,,:r-,,<h'~ln;",'

Page 8

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-2/MW-2 7/30/2002 ND<0.02 14.5 9/24/2002 ND<0.02 14.5 10/21/2002 ND<0.02 14.5 12/4/2002 ND<0.02 14.5 6/25/2003 ND<0.02 14.5 12/17/2003 ND<0.02 14.5 6/16/2004 ND<0.02 14.5 12/28/2004 ND<0.02 14.5 6/14/2005 ND<0.02 14.5 12/6/2005 0.08 34

=

Rank Sum 164.5

=

Rank Mean 16.45

=

Background Rank Sum 164.5

=

Background Rank Mean 16.45 Compliance Wells WelilD Date Result Rank GWB-4/MW-4 7/30/2002 ND<0.02 14.5 9/24/2002 ND<0.02 14.5 10/21/2002 ND<0.02 14.5 12/4/2002 - ND<0.02 14.5 6/25/2003 ND<0.02 14.5 12/17/2003 ND<0.02 14.5 6/16/2004 ND<0.02 14.5 12/28/2004 ND<0.02 14.5 6/14/2005 0.029 30 12/6/2005 0.082 35

=

Rank Sum 181

=

Rank Mean 18.1 GWC-11/MW-117/30/2002 0.034 32 9/24/2002 ND<0.02 14.5 10/21/2002 ND<0.02 14.5 12/4/2002 ND<0.02 14.5 6/25/2003 0.029 31 12/17/2003 ND<0.02 14.5 6/16/2004 ND<0.02 14.5 12/28/2004 ND<0.02 14.5 6/14/2005 0.025 29 12/6/2005 0.181 37

=

Rank Sum 216

=

Rank Mean 21.6 Page 9

GWC-3/MW-3 7/3012002 ND<0.02 14.5 9/24/2002 ND<0.02 14.5 12/4/2002 0.047 33 12/17/2003 ND<0.02 14.5 6116/2004 ND<0.02 14.5 6/14/2005 ND<0.02 14.5 12/6/2005 0.137 36 Rank Sum = 141.5 Rank Mean = 20.2143 Calculation Results:

Kruskal-Wallis H Statistic = 1.28916 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 2.27422 95% Confidence comparison value is 7.81472 at 3 degrees of freedom i 28916 < 7.81472 indicating flO significant group difference 81 5'% significance level 227422 < 781472 indicating no significant group difference at 5% significance level when adjusted for tes Page 10

GROUNDWATER MONITORING REPORT PLANT VOGTLE LANDFILL #3 SOLID WASTE PERMIT No. 017-007D(L)(I)

BURKE COUNTY, GEORGIA APRIL 2006 PREPARED FOR:

Southern Nuclear Operating Company, Inc.

40 Inverness Center Parkway Birmingham, Alabama 35201 PREPARED By:

Kurt R. Batsel, P.E.

Georgia License Number 16594 The Dextra Group, Inc.

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

GROUNDWATER MONITORING REPORT PLANT VOGTLE LANDFILL #3 SOLID WASTE PERMIT No. 017-007D(L)(I)

BURKE COUNTY, GEORGIA APRIL 2006 PREPARED FOR:

Southern Nuclear Operating Company, Inc.

40 Inverness Center Parkway Birmingham, Alabama 35201 PREPARED By:

Kurt R. Batsel, P.E.

Georgia License Number 16594 The Dextra Group, Inc.

1205 Johnson Ferry Road Suite #136-446 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 6 - Conclusions 7 In Order Following Page 7 Tables 1 - Groundwater Elevations and Monitoring Well Construction Details 2 - Groundwater Sampling Field Measurements 3 - Constituents for Detection Monitoring 4 - Summary of Detected Parameters Figures 1 - Groundwater Contour Elevation Map, December 5, 2005 Appendices A - Hydraulic Gradient Calculation Sheets B - Laboratory Analytical Reports C - Statistical Analyses

1 - Introduction This report presents the results of groundwater sampling conducted in December 2005 at private solid waste Landftll #3 operated by Southern Nuclear Operating Company, Inc. (SNC) at Plant Vogtle in Waynesboro, Georgia. Groundwater monitoring was initiated in 2002 in accordance with the approved Groundwater Monitoring Plan for the landfill. The landfill is operated under Solid Waste Permit #017-007D(L)(I) and used for disposal of non-putrescible, non-liquid office and solid waste as well as construction/demolition debris such as asbestos insulation, wooden pallets and concrete. Landftll #3, permitted in 1987, has been utilized solely for construction and demolition debris disposal since 1992.

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

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

The nine permanent groundwater monitoring wells at Landfill #3 were installed in September 2001, July 2002 and June 2005. The well construction details are presented in Table 1. As noted in the table, 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/MW-7, it was decided to return to evaluating this well as a compliance well. This approach was used in this monitoring report. The most appropriate designation for this well will continue to be evaluated in light of future monitoring results. For this report, well GWA-15/MW-15 is the designated background well, and the remaining wells are designated compliance wells. The wells will be referred to as GWC-5, GWB-6, GWA-7, GWC-13, GWC-14, GWA-15, GWB-16, GWC-17 and GWC-18 in this report in accordance with the EPD's well identification guidelines.

Two stormwater sediment ponds were completed in 2004 in accordance with the approved Design and Operational Plan for the Vogtle Landfill #3. As there was no discharge from either pond at the time of the December 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 Vogtle 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 landftll. The marls encountered during drilling were components of the Irwinton Sand member. Either all or parts of the Barnwell Group members (except the Utley Limestone member) were also encountered in the other borings conducted at the landfill. Underlying the Barnwell Group is the Lisbon Formation with its uppermost unit, the Blue Bluff Marl, located immediately under the Utley Limestone. This marl layer, approximately 70 feet thick, is a near-impermeable layer that effectively confines the Tertiary and Cretaceous aquifers, the two confined aquifers beneath the Plant site.

The occurrence of groundwater underlying the landfill appears in confined, semi-confined, unconfined, and perched hydrogeologic units. Groundwater is found primarily in sands, silty sands, 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 sand/clay ratio and the characteristics of the marl/limestone interface.

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

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

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

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

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

the northeast and to the west-southwest beneath the landfill. This mounding effect is believed to be the result of natural 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. Figtlre 1 shows the topography of the landfill.

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. Figtlre 2 presents a map depicting the saturated head contours measured on December 5, 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.

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

Southwest: GWB-6, GWA-7 and GWA-15; Northeast: 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 (Figtlre 1). The calculations used in determining the gradients are provided in Appendix A. For the December 2005 event, the southwest gradient was 0.015, 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 aune 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 aune 2003). The southeast gradient has ranged from a low of 0.06 (December 2002) to a maximum of 0.16 une a 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 3

recorded. Groundwater samples were then collected directly into pre-preserved sample containers supplied by the laboratory. Final measurements of pH, conductivity, and turbidity were performed to verify that these parameters remained stable during sampling. All field instruments were calibtated in the field daily prior to use and at the conclusion of each sampling event. The field measurements are provided in Table 2.

After each sample was collected, the SamplePro pumps and 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 ptior to reassembly; and

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

4.2 Parameter AnalYses In accordance with the approved Groundwater Monitoring Plan, the groundwater samples and field and laboratory quality assurance/quality control (QA/Qc) samples were analyzed for the Chapter 391-3-4 Appendix I list of parameters, which consists of total metals and volatile organic compounds (Table 5). The field QA/QC samples consisted of duplicate samples, trip blanks and equipment blanks. Metals analyses were conducted using EPA Methods 601OB/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 well GWA-7 during the December 2005 event.

5 - Groundwater Quality Evaluation 5.1 Detected Parameters Table 4 presents a summary of all analyzed parameters detected above the laboratory method reporting limits. Barium was detected at concentrations below the MCL in well GWA-7 (0.024 mg/l),

the replicate sample from well GWA-7 (0.022 mg/l) and in well GWC-13 (0.044 mg/l). Zinc was detected in well GWC-5 at 0.055 mg/l, in well GWB-6 at 0.020 mg/l, in well GWA-7 at 0.068 mg/l, in the replicate sample well GWA-7 at 0.217 mg/l, in well GWC-13 at 0.194 mg/l, in well GWA-15 at 0.042 mg/l and in well GWC-17 at 0.096 mg/l; there is no MCL for zinc. In the compliance well GWA-7 the VOC trichlorofluoromethane was detected at 88 ug/l, and at 85 ug/l in the replicate sample well GWA-7; there is no MCL for trichlorofluoromethane. In the compliance well GWC-13, 1,1-dichloroethane, chlorobenzene, cis-1 ,2-dichloroethene, trichlorofluoromethane, vinyl chloride, benzene and trichloroethene were detected at low levels. All VOC concentrations in GWC-13 were below applicable MCLs, except for benzene and trichloroethene which were detected at concentrations equal to the respective MCLs of 5 ug/l. The Appendix II parameter naphthalene was detected in well GWA-7 at 5 ug/l; however, this constituent was not detected in the duplicate sample from well GWA-7.

4

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

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

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

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

The following methodology was used to evaluate the data:

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

• For the well data sets, the 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.

At Landfill #3, statistical analysis was performed for the seven detected parameters barium, zinc, 1,1-dichloroethane, chlorobenzene, cis-1,2-dichloroethene, trichlorofluoromethane, vinyl chloride, benzene, and trichloroethene. Compared to background well GWA-15/MW-15, the analyses indicate statistically significant higher concentrations of the followlng 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, chlorobenzene 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 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, chlorobenzene and cis-1,2-dichloroethene for the GWC-14 historical sample data set.

5

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.

In the Appendix II parameter sampling during this event, naphthalene was detected at a level of 10 ug/l in one GWA-7 sample, but was not detected in the duplicate sample from GWA-7. Based on the non-detection of naphthalene in the duplicate GWA-7 sample and no prior detections of this constituent in previous Appendix II sampling at the site, no modification to the Appendix II sampling program action is proposed at this time. Based on prior detections of the Appendix II parameter mercury in Landfill #3 wells, SNC will continue to perform analysis for mercury in all Landfill #3 wells during the regular semi-annual sampling events.

6

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

GWC-5/MW-5 9/2612001 251.96 249.11 48.65 67 56.85 2.85 195.11 to 205.11 203.31 7/29/2002 50.21 201.75 9/9/2002 50.43 201.53 10/21/2002 49.26 202.70 12/3/2002 49.26 202.70 6124/2003 44.60 207.36 12/1612003 47.55 204.41 6115/2004 47.76 204.20 12/28/2004 49.13 202.83 6/13/2005 45.94 206.02 12/5/2005 48.05 203.91 GWB-6/MW-6 9/2612001 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 6124/2003 46.92 231.95 12/16/2003 46.30 232.57 6115/2004 46.49 232.38 12/28/2004 47.22 231.65 6/13/2005 47.84 231.03 12/5/2005 47.20 231.67 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 6124/2003 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 12/5/2005 31.60 229.73 Page 1 of 3

Table 1 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Elevations and Monitoring Well Construction Details Total Boring Total Well Riser Groundwater Measuring Point Elevation Ground Surface Elevation Depth to Water Depth Depth Height Screened Interval Elevation 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 6/1312005 38.76 234.32 12/5/2005 39.93 233.15 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 12(5/2005 52.56 210.32 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 6/1312005 40.1 228.05 12(5(2005 47.39 220.76 Page 2of3

Table 1 Southern Nuclear Operating Company Plant VogUe 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 10121/2002 DRY DRY 12/312002 DRY DRY 6124/2003 DRY DRY 12/16/2003 DRY DRY 6/1512004 DRY DRY 12/28/2004 DRY DRY 611312005 DRY DRY 12/5/2005 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 12/5/2005 72.6 150.04 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 12/5/2005 DRY DRY Notes:

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

msl = mean sea level; topvc = measured from top of pvc riser; bls = below land surface Page 3 of3

Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'1 Turbidity'2 Purged Odor Color Comments GWC-5/MW-5 9/26/2001 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 9/9/2002 8.13 365 4.11 2.0 none none 10/21/2002 -- .- -- -- -- --

12/3/2002 5.94 117 7.8 2.0 none none 6/24/2003 5.18 29 3.5 6.0 none none 12/16/2003 6.27 210 79.7 3.0 none cloudy Split with GAEPD 6/16/2004 5.94 40.7 16.5 2.0 none none 12/28/2004 4.96 30 7.33 2.3 none none 6/13/2005 5.86 580 6.2 3.5 none none 12/6/2005 5.48 548 6.03 2.5 none none GWB-6/MW-6 9/26/2001 7.13 242 25.6 2.0 none -- Well development only 7(29(2002 6.75 1,338 0.35 1.5 none none 9/9/2002 4.13 198 6.43 1.5 none none 10/21/2002 6.72 573 0.44 2.5 none none 12/3/2002 6.14 116 0.45 1.5 none none 6/24/2003 7.09 155 9.1 1.5 none none 12/17/2003 6.82 126 2.27 1.5 none none 6/16/2004 6.77 178.5 1.25 2.75 none none 12/28/2004 7.05 130 2.84 2.25 none none 6/13/2005 6.88 125 2.67 2.50 none none 12(5(2005 7.10 122 2.22 2.00 none none GWA*7/MW-7 9/26/2001 -. -- cloudy 30.0 -- -- Well development only 7/29/2002 6.97 251 8.33 2.5 none none 9/9/2002 7.52 327 9.97 5.0 none none 10(21/2002 4.39 92 3.14 2.0 none none 12/3/2002 6.51 188 7.3 2.5 none none 6(24/2003 7.02 163 101.3 4.0 none dark brown Turbidity >100 ntu for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> 12/16/2003 5.73 62.7 100 4.0 none mod. brown Turbidity 85*100 ntu for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 6/15/2004 5.94 68.9 42.7 2.0 none none 12/28/2004 8.16 109 9.86 3.5 none none 6/14/2005 7.25 275 8.56 3.0 none none 12/6/2005 5.37 92 96 8.5 none mod. brown Turbidity >100 ntu for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> 1 of 3

Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'! Turbidity'2 Purged Odor Color Comments GWG-13/MW-13 7/29/2002 6.52 421 0.66 --

9/912002 5.96 77.5 6.40 1.0 none none 10/21/2002 6.19 73.4 3.09 2.5 none none 12/312002 6.54 481 1.00 2.5 none none 6/24/2003 5.95 271 2.02 2.5 none none 12/16/2003 5.65 294 0.75 6.0 none none Split with GAEPD 6/1612004 5.84 366 4.70 1.75 none none 12/28/2004 6.09 268 0.38 1.75 none none 6/1312005 5.75 255 2.00 1.50 none none 12/6/2005 4.03 4.24 1.07 2.50 none none GWC-14/MW-14 7/29/2002 6.49 448 1.15 -. none none 9/912002 5.57 717 5.19 -- none none 10/21/2002 6.00 674 4.65 3.2 none none 12/312002 5.54 547 2.7 4.5 none none 6/24/2003 5.97 197 3.61 2.5 none none 12/17/2003 -- -- -- - -- -- Split with GAEPD-VOGs & metals 6/15/2004 -- .- .- -- -- --_. Well Dry 12/28/2004 -- .- - .- -- Too little water to purge and sample 6114/2005 -- -- .- .- .- -- Too little water to purge and sample 12/6/2005 Too little water to purge and sample GWA-15/MW*15 7/29/2002 5.70 95.8 1.12 4.0 none none 9/912002 5.92 118 8.53 2.5 none none 10/21/2002 5.19 81 1.88 4.5 none none 12/312002 7.58 78.2 3.6 2.5 none none 6/24/2003 7.44 48.0 5.38 2.5 none none 12/17/2003 6.93 39.4 4.55 6.5 none none Split with GAEPD 6/1512004 6.47 55.7 5.59 2.25 none none 12/28/2004 6.83 50.0 8.85 3.00 none none 6/1412005 7.85 72.0 7.75 4.00 none none 12/5/2005 6.88 56.0 2.3 2.50 none none 20f3

Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'1 Turbidity'2 Purged Odor Color Comments GWB-16/MW-16 7/29/2002 -- - -- -- -- -- Well Dry 9/912002 -- -- -- -- -- -- Well Dry 10121/2002 -- -- -- -- -- -- Well Dry 1213/2002 -- -- -- -- -- -- Well Dry 6/24/2003 -- -- -- -- -- -- Well Dry 12/16/2003 -- -- -- -- -- -- Well Dry 611512004 -- -- -- -- -- -- Well Dry 12128/2004 -- -- -- -- -- -- Well Dry 6/15/2005 -- -- -- -- -- -- Well Dry 12/6/2005 -- -- -- -- -- -- Well Dry GWB-17/MW-17 6/15/2005 5.84 77.58 5.29 3.5 none none 12/6/2005 6.33 68 10 3 none none GWB-18/MW-18 6/15/2005 6.67 85.6 8.2 4.2 none none 12/6/2005 -- -- -- -- -- -- Well Dry Notes:

-- = no data recorded; 11 - Conductivity in units of umhos/sec 12 - Turbidity in units of NTU 3 of 3

Table 3 Southern Nuclear Operating Company Plant Vogtle Landfill #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!7l3l (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!7951 Organic Constituents: 8260 (16) Acetone .

(17) Acrylonitrile .

(18) Benzene .

(19) Bromochloromethane .

(20) Bromodichloromethane .

(21) Bromoform; Tribromomethane .

(22) Carbon disulfide .

(23) Carbon tetrachloride .

(24) Chlorobenzene .

(25) Chloroethane; Ethyl chloride .

(26) Chloroform; Trichloromethane .

(27) Dibromochloromethane; Chlorodibromomethane .

(28) 1,2-Dibromo-3-chloropropane; DBCP .

(29) 1,2-Dibromoethane; Ethylene dibromide; EDB .

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

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

(32) trans-l,4-Dichloro-2-butene .

(33) l,l-Dichloroethane; Ethylidene chloride .

(34) 1,2-Dichloroethane; Ethylene dichloride .

(35) 1,1-Dichloroethylene; 1,1-Dichloroethene; Vinylidene chloride .

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

(37) trans-1,2-Dichloroethylene; trans-l,2-0ichloroethene (38) 1,2-Dichloropropane; Propylene dichloride .

(39) cis-1,3-Dichloropropene .

(40) trans-l,3-Dichloropropene .

(41) Ethylbenzene .

(42) 2-Hexanone; Methyl butyl ketone .

(43) Methyl bromide; Bromomethane .

(44) Methyl chloride; Chloromethane .

Page 1 of 2

Table 3 (continued)

Southern Nuclear Operating Company, Inc.

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

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

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

(48) Methyl iodide; Iodomethane .

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

(50) Styrene .

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

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

(53) Tetrachloroethylene; Tetrachloroethene; Perchloroethylene .

(54) Toluene .

(55) 1,1,1-Trichloroethanei Methylchloroform .

(56) 1,1,2-Trichloroethane .

(57) Trichloroethylene; Trichloroethene .

(58) Trichlorofluoromethanei CFC-l1 .

(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, I I third edition, November 1986, as revised December 1987,includes Method 8260; and 15 metals for which SW-846 provides either Method 6010 or a method from the 7000 series of methods.

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

Page 2 of 2

Table 4 Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters December 2005 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWB-6/MW-6 GWA-7/MW-7 GWA-7/MW-7' GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 GWC-17/MW-17 GWC-18JMW-18 1

Metals Barium 2.00 BOl BOl 0.024 0.022 0.044 NS BOl BOl NS Zinc NA 0.055 0.020 0.068 0.217 0.194 NS 0.042 0.096 NS Organics 2 1,1-Dichloroethane NA BOl BOl BOl BOl 18 NS BOl BOl NS Chlorobenzene 100 BOl BOl BOl BOl 4J NS BOl BOl NS cis-1 ,2-Dichloroethene 70 SOL BOl BOl BOl NS BOl SOL NS Trichlorofluoromethane NA BOl BOl 88 85 60 NS BOl SOL NS Vinyl chloride 2 Sal BOl BOl BOl 1J NS BOl SOL NS Napthalene4 NA NA NA BOl NA NS NA NA NA Benzene Sal Sal SOL SOL 5 NS SOL SOL NS Trichloroethane Sal BOl BOl BOl 5 NS BOl SOL NS BOl- Below quantification level; J - Estimated Value MeL* Maximum Contaminant level per EPO Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or insufficient recovery to sample well 1 Metals concentrations in mg/L 20rganics concentration units in ug/l or ppb

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

Page 1 of10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters June 2005 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWB-6/MW-<; GWA-7/MW-7 GWC-13/MW-13 GWC-13IMW-13' GWC-14IMW-14 GWA-15/MW-15 GWC-17/MW-17 GWC-18/MW-18 Metals1 Barium 2.00 BOl BOl BOl 0.028 0.031 NS BOl BOl BOl Zinc NA BOl BOl BOl 0.020 BOl NS 0.029 BOl BOl Copper 1.3' BOl BOl BOl BOl BOl NS BOl BOl BOl Mercury4 0.002 BOl BOl BOl BOl BOl NS BOl BOl BOl Chromium (total) 0.1 BOl BOl BOl BOl BOl NS BOl BOl BOl Beryllium 0.004 BOl BOl BOl BOl BOl NS BOl BOl BOl Cadmium 0.005 BOl BOl BOl BOl BOl NS BOl BOl BOl Nickel NA BOl BOl BOl BOl BOl NS BOl BOl BOl lead 0.015' BOl BOl BOl BOl BOl NS BOL BOl BOL Vanadium NA BOL BOl BOl BOL BOl NS BOL BOl BOl Organics2 1.1-Dichloroethane NA BOl BOl BOL 15 15 NS BOL BOl BOl Carbon disulfide NA BOl BOl BOL BOL BOL NS BOl 32 BOl Chlorobenzene 100 BOl BOL BOl BOL BOl NS BOl BOl BOl 1,4-Dicholorbenzene 75 BOl BOL BOl BOl BOl NS BOl BOl BOl Methylene chloride BOl BOl BOL BOl BOl NS BOl BOl BOL cis-1,2-Dichloroethene 70 BOl BOl BOl 8 NS BOl BOL BOl Trichlorofluoromethane NA BOL BOL 22 46 45 NS BOl BOl BOl 1,1-Dichloroethene BOL BOl BOl BOl BOl NS BOl BOl BOl Xylenes (Total) 10000 BOL BOl BOL BOl BOl NS BOl BOL BOl Vinyl chloride BOL BOL BOl BOL BOL NS BOL BOl BOl J

Chloroform 0.1 BOl BOl BOl BOl BOl NS BOl BOl BOl Trichloroethane BOL BOL BOl BOl BOL NS BOl BOl BOl Sal ~ Below quantification level Mel - Maximum Contaminant Level per EPD Rule Chapter 391-3-5; NA - None available NS - Not sampled; well dry or insufficient recovery to sample well 1Metals concentrations in mg/l 20rgan;cs concentration units in u9/1 or ppb J Applies only to Community Water Systems serving 10,000 4Appendix II parameter; NA reflects that this parameter was not analyzed 10r those wells not included in the Assessment Monitoring Program

'Replicate sample of well GWC-13/MW-13 sample 6Action level Bold indicates detected concentration is greater than the MeL Page 2 of 10

Table 4 (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 Sal sal SQl SQl 0.043 NS SQl Zinc NA SQl SQL Sal sal 0.044 NS SOL Copper 1.36 Sal Sal SOL sal sal NS SOL Mercury4 0.002 SOL SOL SOL 0.0017 SOL NS 0.0004 Chromium (total) 0.1 Sal SOL SOL SQl SOL NS SOL Seryllium 0.004 sal SOL SOL sal sal NS SOL Cadmium 0.005 SOL SOL Sal SOL SOL NS SOL Nickel NA Sal SOL SOL SOL saL NS sal lead 0.0156 SOL SOL SOL SOL SOL NS SOL Vanadium NA SOL SOL Sal SOL sal NS SOL Organics 2 1,1-Dichloroethane NA SOL Sal sal SOL 16 NS sal Chlorobenzene 100 SOL saL sal sal SOL NS SOL 1,4-Dicholorbenzene 75 sal sal sal SOL SOL NS saL Methylene chloride 5 SOL SOL Sal sal Sal NS SOL cis-1,2-Dichloroethene 70 saL sal Sal SOL 8 NS SOL Trichlorofluoromethane NA SOL sal 146 143 81 NS SQl 1,1-Dichloroethene 7 SOL SOL saL SOL SOL NS SOL Xylenes (Total) 10000 Sal SOL SQL SOL SQL NS SOL Vinyl chloride 2 Sal SQL SQl Sal SOL NS SOL 3

Chloroform 0.1 SQl SOL SQl SOL SOL NS SQl Trichloroethene 5 sal SOL SOL sal sal 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

'Metals concentrations in mg/l 20rganics concentration units in ug/l or ppb 3Applies only to Community Water Systems serving 10,000 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program 5Replicate sample otwell GWA-7/MW-7 sample 6 Action level Bold indicates detected concentration is greater than the MCL.

Page30f 10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters June 2004 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-13/MW-13 5 GWC-14/MW-14 GWA-15/MW-15 Metals' Sarium 2.00 0.040 Sal sal 0.034 0.034 NS sal Zinc NA Sal sal sal sal sal NS sal Copper 1.36 Sal sal sal sal sal NS sal Mercury' 0.002 Sal sal 0.0006 sal sal NS Sal Chromium (total) 0.1 Sal sal Sal sal Sal NS sal Seryllium 0.004 sal sal sal Sal sal NS sal Cadmium 0.005 Sal sal sal sal Sal NS sal Nickel NA Sal sal sal sal sal NS sal lead 0.015 6 Sal Sal sal 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-1,2-Dichloroethene 70 Sal sal sal 9 10 NS sal Trichlorofluoromethane NA sal sal 46 121 133 NS sal 1,1-Dichloroethene 7 sal sal sal Sal Sal NS sal Xyienes (Total) 10000 Sal sal Sal Sal Sal NS Sal Vinyl chloride 2 Sal sal sal 2 2 NS sal 3

Chloroform 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 20 rganics concentration units in ug/l or ppb 3Applies only to Community Water Systems serving 10,000 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program 5Replicate sample of well GWC-13/MW-13 sample 6Action level Bold indicates detected concentration is greater than the MCL.

Page 4 of 10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters December 2003 WEll SAMPLES CONSTITUENT MCl GWG-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-13/MW-13 5 GWC-14/MW-14 GWA-15/MW-15 Metals' Sarium 2.00 0.142 Sal Sal 0.033 0.032 0.189 Sal Zinc NA 0.032 Sal 0.023 Sal Sal 0.127 Sal Copper 1.3 6 0.025 Sal Sal Sal Sal 0.026 Sal Mercurl 0.002 Sal Sal Sal Sal Sal 0.01 Sal Chromium (total) 0.1 0.028 Sal Sal Sal Sal 0.091 Sal Seryllium 0.004 Sal Sal Sal Sal Sal 0.004 Sal Cadmium 0,005 Sal Sal Sal Sal Sal 0.011 Sal Nickel NA Sal Sal Sal Sal Sal 0.034 Sal lead 0.015 6 Sal Sal SOL Sal Sal 0.D15 Sal Vanadium NA Sal Sal Sal Sal SOL 0.060 Sal Organics 2 1,1-Dichloroethane NA Sal Sal Sal 20 21 10 Sal Chlorobenzene 100 Sal Sal Sal Sal Sal 19 Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal Sal 33 Sal Methylene chloride 5 Sal Sal Sal Sal Sal Sal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal 14 14 17 Sal Trichlorofluoromethane 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 Chloroform3 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 lMetals concentrations in mglL

'Organics concentration units in ug" or ppb 3Applies only to Community Water Systems serving 10,000 4Appendlx II parameter 5Replicate sample of well GWC-13/MW-13 sample 6Actlon level Bold indicates detected concentration is greater than the MCL.

Page50f 10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle landfill #3 Summary of Detected Parameters June 2003 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-13/MW-13 5 GWC-14/MW-14 GWA-15/MW-15 Metals' Sarium 2.00 Sal Sal 0.036 0.029 0.030 0.051 Sal Zinc NA Sal Sal 0.034 Sal Sal Sal Sal Copper 1.3 Sal Sal 0.035 Sal Sal Sal Sal Mercury' 0.002 NS NS NS 0.0005 0.0005 0.0072 SOL Organics2 1,1-0ichloroethane NA SOL Sal SOL 9 9 10 SOL Chlorobenzene 100 SOL SOL SOL SOL SOL 7 SOL 1,4-0icholorbenzene 75 SOL Sal SOL SOL SOL 16 SOL Methylene chloride 5 SOL Sal SOL SOL SOL Sal SOL cis-1,2-0ichloroethene 70 SOL SOL SOL 6 6 10 SOL Trichlorofluoromethane NA SOL SOL 23 41 47 5 Sal 1,1-0ichloroethene 7 Sal SOL SOL SOL SOL SOL Sal Xylenes (Total) 10000 Sal SOL Sal Sal SOL SOL Sal Vinyl chloride 2 SOL SOL Sal Sal SOL SOL SOL Chloroform3 0.1 SOL SOL Sal SQl SOL SQl SOL SQl - Selow quantification level MCl - Maximum Contaminant level per EPO Rule Chapter 391-3-5; NA - None available

'Metals concentrations in mg/l 20 rganics concentration units in ugll or ppb 3Applies only to Community Water Systems serving 10,000 4Appendix 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 6 of 10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters December 2002 WELL SAMPLES CONSTITUENT MCL GWC-5fMW-5 GWB-6fMW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-14/MW-14 GWA-15fMW-15 1

Metals Barium 2.00 0.018 BOL 0.015 0.082 0.106 BOL Zinc NA SOL BOL SOL 0.027 BOL SOL Organicl 1,1-Dichloroethane NA BOL BOL BOL 7 16 BOL Chlorobenzene 100 BOL BOL SOL BOL 10 BOL 1A-Dicholorbenzene 75 BOL BOL SOL SOL 39 SOL Methylene chloride 5 BOL BOl BOl SOL SOL SOL cis-1 ,2-Dichloroethene 70 BOl BOl BOL BOl 19 SOL Trichlorofluoromethane NA SOL SOL 210 391 27 SOL 1,1-Dichloroethene 7 SOL BOl BOl 11 24 SOL Xylenes (Total) 10000 SOL SOL SOL SOL 21 SOL Vinyl chloride 2 SOL SOL SOL SOL 4 SOL 3

Chloroform 0.1 SOL SOL SOL 5 SOL SOL BOl - Below 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/l or ppb 3Applies only to Community Water Systems serving 10,000 Bold indicates detected concentration is greater than the MCl.

Page 7 of 10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters October 2002 WEll SAMPLES CONSTITUENT MCl GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 GWA-15-2/MW-15-2 3 Metals' Sarium Sal Sal Sal 0.083 0.064 Sal Sal Zinc Sal SOL SOL 0.027 Sal Sal Sal Organics2 1,1-Oichloroethane NA Sal SOL SOL 6 17 Sal Sal Chlorobenzene 100 SOL SOL SOL SOL 9 Sal SOL 1,4-0icholorbenzene 75 SOL SOL SOL SOL 35 SOL SOL Methylene chloride 5 SOL SOL SOL Sal 11 SOL SOL cis-1,2-Dichloroethene 70 SOL SOL SOL SOL 16 SOL SOL Trichlorofluoromethane NA SOL SOL 221 348 31 SOL SOL 1,1-Dichloroethene 7 SOL SOL Sal SOL SOL SOL Sal Xylenes (Total) 10000 SOL SOL SOL SaL 11 Sal saL Vinyl chloride 2 SOL SOL SOL SOL SOL SOL SOL saL - Selow quantification level MCl - Maximum Contaminant Level per EPO Rule Chapter 391-3-5; NA - None available

'Metals concenlrations in mg/l 20rganics concentration units in ug/l or ppb 3Replicate sample of GWA-15I1MW-15 well Bold indicates detected concentration is greater than the MCL.

Page 8 of 10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters September 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 GWC-14-2/MW-14-2 3 GWA-15/MW-15 Metals' Sarium 2 0.020 Sal Sal 0.085 0.092 0.095 Sal Zinc NA Sal Sal Sal 0.023 Sal Sal Sal Organics2 1,1-Dichloroethane NA Sal Sal Sal 6 21 21 Sal Chlorobenzene 100 Sal Sal Sal Sal 8 8 Sal 1A-Dichlorobenzene 75 Sal Sal Sal Sal 37 36 Sal Methylene chloride 5 Sal Sal Sal Sal Sal Sal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal Sal 19 18 Sal Trichloroftuoromethane NA Sal Sal 32 381 47 48 Sal 1,1-Dichloroethene 7 Sal Sal Sal 8 29 28 Sal Xylenes (Total) 10000 Sal Sal Sal Sal 23 23 Sal Vinyl chloride 2 Sal Sal Sal Sal Sal 3 Sal Sal - Below quantification level MCl - Maximum Contaminant level per Georgia EPD Rule Chapter 391-3-5; NA - None available

'Metals concentrations In mg/l 20rganics concentration units in ug/I or ppb

'Replicate sample of GWS-14//MW-14 well sample Bold indicates detected concentration is greater than the MCL.

Page 9 of 10

Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill #3 Summary of Detected Parameters July 2002 WELLS' 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 Metals' Sarium 2 SOL SOL SOL SaL 0.077 0.068 SOL Zinc NA SOL SOL SOL SaL SOL saL saL 2

Organics 1,1-Dichloroethane NA saL saL SOL SOL SOL 13 SOL Chlorobenzene 100 saL SOL SOL SOL saL SOL SOL 1A-Dichlorobenzene 75 SaL saL saL SOL 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 SOL saL 177 192 300 43 SOL 1,1-Dichloroethene 7 SOL SOL SOL SOL sal saL Sal Xylenes (Total) 10000 SaL SOL SOL SOL saL 8 saL Vinyl chloride 2 Sal saL Sal SOL saL saL SOL SOL - Selow quantification level MCL - Maximum Contaminant level per Georgia EPD Rule Chapter 391-3-5; NA - None available

'Metals concentrations in mg/L 20rganics concentration units in ugll or ppb 3Replicate sample of GWA-7/MW-7 well sample Bold indicates detected concentration is greater than the MCL.

Page 100f 10

FIGURES M.ppr<odu=lb,-BiilA<o:iolNoppirt&Peo<htror.CitJ.GA BI!J.PaOjB<:TWlotOlll>>

DATF.OI' Pl-I01'OGRAPH'i: 8/22/2001

...jj@

MM*,

• GWe--5!MW*;. GJ.OL'NDWA'TEIlMO/<,'lTOJUNGW'ELL WASrE ,\(A.'MGBMBNT l..':oIItIllVPFBB BOlNDAkYM"AKK'F.J.

GIlUUNDWArnll 'YOPOI' GllOlThiDWATEIl WEU u.sJNG F.u;VAl1ON

"'="

ME:'IlIhNE BOLT TOTAL G'lII'C5/1JNI'_S Z5\.!l6 21)3.91 ll~ ~Rl G'lII'II-li/NW-6 G'lII'A.7/tlW-7 278.87 26U3 nl.li7 229,73 MM-7 963U;19l 7UII.06S9 257..56 212.56 G'\IVA_13fM'\1l7_13 27l.OII nus

/lOll.. 9:161-2699 7341.2711 m'l'J ZoU.99 GWA-!"/IlW'*I. 26U8 Zt032 NM,9 9117.9166 69t0.28Z9 2Q..12 Z3lU2 GWA_IS/MW_IS 26lJ.15 :131.76 hIM-10 8eCl'l.0679 1Z5HIll77 2519S ZlJ.95 G'lII'A_16/NW_16 256.95 on-GWA_I7/NW_17 221M 150.ol'l hIM-II 1llO8.1725 2S'J.YJ :l34.l9 G.... ,,,,....,.

-ntl.~

GWC-II/lI'lI'.\a 227.'>4 [)I.y

/lOol.l:l <ng,+U6 lIOO3.l302 Z7O.86 :ND.86 Figure 2

ApPENDIX A - HYDRAULIC GRADIENT CALCULATION SHEETS

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

December 2005 Monitoring Event Water Table Well Designation Elevation Northing Easting GWC-5/MW-5 203.91 9604.30 7999.33 GWB-6/MW-6 231.67 9432.48 7473.25 GWA-7/MW-7 229.73 8826.22 7657.89 GWC-13/MW-13 233.15 9242.72 7995.86 GWC-14/MW-14 210.32 8960.64 7999.10 GWA-15/MW-15 220.76 8975.71 6886.73 GWC-17/MW-17 150.04 8553.09 8135.59 GWC-18/MW-18 DRY 8938.05 8238.63 Gradient Calculation from fitting a plane to three points a X1 + b Yl + CZ1 + d =0 a x2 + b Y2 + CZ2 + d =0 a X3 + b Y3 + cZ 3 + d =0 where (x;,y;) are the coordinates of the well and zi is the head, i = 1,2,3 The gradient is calculated from the square root of (a2 + b2 )

Southwest Gradient Wells of Interest = (GWB-6, GWA-7 & GWA-15) (High-Mid-Low) x Y z GWB-6/MW-6 9432.48 7473.25 231.67 GWA-7/MW-7 8826.22 7657.89 229.73 GWA-15/MW-15 8975.71 6886.73 220.76 7473.25 231.67 1 a= 7657.89 229.73 1 -3152.271 6886.73 220.76 1 1=

9432.48 231.67 1 b= 8826.22 229.73 1 5728.1628 8975.71 220.76 1 1=

9432.48 7473.25 c= 8826.22 7657.89 439921.63 8975.71 6886.73 1=

9432.48 7473.25 231.67 d= 8826.22 7657.89 229.73 29374916 8975.71 6886.73 220.76 1=

zO ::: -66.77306592 mx= 0.007165529 my= -0.013020871 ISouthwest Gradient - 0.015' Page 1 of 3

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

Northeast Gradient Wells of Interest == (GWC-13, GWB-6 & GWC-5) (High-Mid-Low) x y z GWC-13/MW-13 9242.72 7995.86 233.15 GWB-6/MW-6 9432.48 7473.25 231.67 GWC-5/MW-5 9604.30 7999.33 203.91 a==

7995.86 7473.25 7999.33 233.15 231.67 203.91 1

1 1

I, 15286.252 b==

9242.72 9432.48 9604.30 233.15 231.67 203.91 1

1 1

I, -5013.444 c==

9242.72 9432.48 9604.30 7995.86 7473.25 7999.33 1

1 1

I, 189623.79 d==

9242.72 9432.48 9604.30 7995.86 7473.25 7999.33 233.15 231.67 203.91 I, 225584130 zO == -1189.640441 mx== -0.080613577 my== 0.026438898 INortheast Gradient == 0.08~

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 7995.86 233.15 GWA-7/MW-7 8826.22 7657.89 229.73 GWC-14/MW-14 8960.64 7999.10 210.32 7995.86 233.15 1 a= 7657.89 229.73 1 7726.9359 7999.10 210.32 1 1=

9242.72 233.15 1 b= 8826.22 229.73 1 8543.9814 8960.64 210.32 1 1=

9242.72 7995.86 c= 8826.22 7657.89 -96684.04 8960.64 7999.10 1=

9242.72 7995.86 233.15 d= 8826.22 7657.89 229.73 -19440458 8960.64 7999.10 210.32 1=

zO = -201.0720485 mx= 0.079919458 my= 0.088370134 ISoutheast Gradient = 0. 121 Page 3 of3

ApPENDIX B - LABORATORY ANALYTICAL REPORTS DECEMBER 2005

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel V.O. (50308/82608) - Appendix I Sample 10: GWC-5/MW-5 Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/14/2005 ACl Sample #: 238733 Units: jJg/l Analyst: RP Analyte Result PQl Analyte Result PQl Acetone BOL 100 Styrene SOL 5 Acrylonitrile BOL 50 1,1,1,2-Tetrachloroethane SOL 5 Benzene BOL 5 1,1,2,2-Tetrachloroethane SOL 5 Bromochloromethane BOL 5 Tetrachloroethene BOL 5 Sromodichloromethane BOL 5 Toluene BOL 5 Bromoform BOL 5 1,1,1-Trichloroethane BOL 5 Carbon disulfide BOL 5 1,1,2-Trichloroethane BOL 5 Carbon tetrachloride BOL 5 Trichloroethene BOL 5 Chlorobenzene BOL 5 Trichlorofluoromethane BOL 5 Chloroethane BOL 10 1,2,3-Trichloropropane BOL 5 Chloroform BOL 5 Vinyl acetate BOL 50 1,2-Dibromo-3-chloropropane BOL 20 Vinyl chloride BOL 2 Dibromochloromethane BOL 5 m & p-Xylenes BOL 10 1,2-Dibromoethane BOL 5 o-Xylene BOL 5 trans-1,4-Dichloro-2-butene SOL 10 1,2-Dichlorobenzene BOL 5 1,4-Dichlorobenzene BOL 5 1,1-Dichloroethane BOL 5 1,2-Dichloroethane BOL 5 1,1-Dichloroethene BOL 5 cis-1,2-Dichloroethene SOL 5 trans-1,2-Dichloroethene SOL 5 1,2-Dichloropropane SOL 5 cis-1 ,3-Dichloropropene BOL 5 trans-1,3-Dichloropropene SOL 5 Ethylbenzene SOL 5 2-Hexanone SOL 50 Methyl bromide SOL 10 Methyl chloride SOL 10 Methyl ethyl ketone SOL 100 Methyl iodide SOL 5 4-Methyl-2-pentanone SOL 50 Methylene bromide SOL 5 Methylene chloride SOL 5 Page 3 of 71

IA CL 1~-.--

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWC-5/MW-5 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 ACl Sample #: 238733 Units: jJg/L Analyst: TM Analvte Result PQl 1,2-Dibromo-3-chloropropane SOL 0.20 1,2-0ibromoethane SOL 0.05 Page 4 of 71

IA CL 1~

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041)

Sample 10: GWC-S/MW-S Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACL Sample #: 238733 Units: mg/l Analyst: SW Analyte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Sarium Sal 0.020 Beryllium Sal 0.004 Cadmium Sal 0.005 Chromium BOl 0.020 Cobalt SQl 0.050 Copper Sal 0.020 lead SQl 0.010 Nickel BOl 0.020 Selenium Sal 0.040 Silver Sal 0.010 Thallium BOL 0.002 Vanadium BOl 0.050 Zinc 0.055 0.020 Page 5 of 71

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

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Mr. Kurt Batsel Date Sample ID ACL# -Analyte --.- -- --Matrix-- -.- Result PQl:--- Units - Analvzed GWC-5/MW-5 238733 Mercury (7470A) Water BOl 0.0005 mg/L 12/19/2005 Page 6 of 71

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel v.o. (5030B/8260B)

• Appendix I Sample 10: GWB-6/MW-6 Matrix: Water Date Sampled: 12/05/2005 Date Extracted:

Date Analyzed: 12/14/2005 ACl Sample #: 238734 Units: ~g/L Analyst: RP Analvte Result PQl Analvte Result PQl Acetone BOL 100 Styrene BOL 5 Acrylonitrile BOL 50 1,1,1,2-Tetrachloroethane BOL 5 Benzene BOL 5 1,1,2,2-Tetrachloroethane BOL 5 Bromoch loromethane BOl 5 Tetrachloroethene BOl 5 Sromodichloromethane SOL 5 Toluene BOl 5 Sromoform Sal 5 1,1,1-Trichloroethane Sal 5 Carbon disulfide BOL 5 1,1,2-Trichloroethane Sal 5 Carbon tetrachloride Sal 5 Trichloroethene Sal 5 Chlorobenzene Sal 5 Trichlorofluoromethane Sal 5 Chloroethane BOl 10 1,2,3-Trichloropropane Sal 5 Chloroform Sal 5 Vinyl acetate Sal 50 1,2-Dibromo-3-chloropropane Sal 20 Vinyl chloride BOl 2 Dibromochloromethane Sal 5 m & p-Xylenes BOL 10 1,2-Dibromoethane BOL 5 o-Xylene BOL 5 trans-1,4-Dichloro-2-butene BOl 10 1,2-Dichlorobenzene BOl 5 1A-Dichlorobenzene BOl 5 1,1-Dichloroethane Sal 5 1,2-Dichloroethane Sal 5 1,1-Dichloroethene Sal 5 cis-1 ,2-Dich loroethene BOl 5 trans-1,2-Dichloroethene BOl 5 1,2-Dichloropropane BOL 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene Sal 5 Ethylbenzene BOl 5 2-Hexanone Sal 50 Methyl bromide BOL 10 Methyl chloride Sal 10 Methyl ethyl ketone SOL 100 Methyl iodide BOL 5 4-Methyl-2-pentanone BOL 50 Methylene bromide BOL 5 Methylene chloride BOl 5 Page 7 of 71

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWB-6/MW-6 Matrix: Water Date Sampled: 12/05/2005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 ACL Sample #: 238734 Units: IJg/L Analyst: TM Anatyte Result PQL 1,2-Dibromo-3-chloropropane SOL 0.20 1.2-Dibromoethane SOL 0.05 Page 8 of 71

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1. 154 - - --- ---------- Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041)

Sample 10: GWB-6/MW-6 Matrix: Water Date Sampled: 12/05/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACL Sample #: 238734 Units: mg/L Analyst: SW Analyte Result PQL Antimony SOL 0.006 Arsenic SOL 0.010 Sarium SOL 0.020 Beryllium SOL 0.004 Cadmium SOL 0.005 Chromium SOL 0.020 Cobalt BOL 0.050 Copper BOl 0.020 lead SOL 0.010 Nickel SOL 0.020 Selenium SOL 0.040 Silver Sal 0.010 Thallium Sal 0.002 Vanadium SOL 0.050 Zinc 0.020 0.020 Page 9 of 71

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1. 154 Date Received: 12108/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

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Mr. Kurt Satsel Date Sample 10 ACL# Analyte Matrix Result PQL Units Analyzed GWS-6/MW-6 238734 Mercury (7470A) Water SOL 0.0005 mg/L 12/19/2005 Page 10 of 71

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068*0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel V.O. (50308/82608) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/14/2005 ACl Sample #: 238735 Units: j.Jg/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 Senzene SOL 5 Methyl bromide Sal 10 Sromochloromethane SOL 5 Methyl chloride Sal 10 Sromodichloromethane SOL 5 Methyl ethyl ketone Sal 100 Bromoform Sal 5 Methyl iodide Sal 5 Carbon disulfide Sal 5 Methyl methacrylate Sal 30 Carbon tetrachloride Sal 5 4-Methyl-2-pentanone Sal 50 Chlorobenzene Sal 5 Methylene bromide Sal 5 Chloroethane Sal 10 Methylene chloride Sal 5 Chloroform SOL 5 Naphthalene 5 5 Chloroprene SOL 20 Propionitrile Sal 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane Sal 5 1,1,1,2-Tetrachloroethane SOL 5 1,2-Dibromoethane Sal 5 1,1,2,2-Tetrachloroethane -- SOL 5 trans-1 A-Dichloro-2-butene Sal 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene Sal 5 Toluene Sal 5 1,3-Dichlorobenzene SOL 5 1,1,1-Trichloroethane BOl 5 1A-Dichlorobenzene Sal 5 1,1,2-Trichloroethane Sal 5 Dichlorodifluoromethane Sal 5 Trichloroethene Sal 5 1, 1-Dichloroethane Sal 5 Trichlorofluoromethane 88 5 1,2-Dichloroethane Sal 5 1,2,3-Trichloropropane Sal 5 1,1-Dichloroethene SOL 5 Vinyl acetate Sal 50 cis-1,2-Dichloroethene Sal 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 1,3-Dichloropropane SOL 5 2,2-Dichloropropane Sal 15 1,1-Dichloropropene SQL 5 cis-1,3-Dichloropropene BOl 5 trans-1 ,3-Dichloropropene SOL 5 Page 11 of 71

IA CL I~

Phone: (770) 409-1444 A_D_~_:A_N~C_'_E_'D_C_'H....E_'M_'L_S__T~'R_Y_LA_B_S_,_IN_C_o 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 #. ' '. Vogue LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/12/2005 Date Analyzed: 12/12/2005 ACl Sample #: 238735 Units: jJg/L Analyst: RB Analyte Result PQl 4-Chloro-3-methylphenol Sal 20 2-Chlorophenol Sal 10 m & p-Cresol Sal 10 o-Cresol Sal 10 2,4-Dichlorophenol Sal 10 2,6-Dichlorophenol Sal 10 2,4-Dimethylphenol Sal 10 4,6-Dinitro-2-methylphenol Sal 50 2,4-Dinitrophenol Sal 50 2-Nitrophenol Sal 10 4-Nitrophenol Sal 50 Pentachlorophenol Sal 50 Phenol Sal 10 2,3,4,6-Tetrachlorophenol SOL 10 2,4,5-Trichlorophenol Sal 10 2,4,6-Trichlorophenol Sal 10 Page 12 of71

IACL l Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_-Y:_*:4_N~~_'E-1)-C

'H_'E-'M__IS-T-'R-Y-L-A-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 #: Vogtle LF #3 4665 Lower Roswell Road ACl Project #: 49407

1. 154 Date Received: *12/08/2005 Marietta, GA 30068-0000 Date Reported: 1212912005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 1211212005 Date Analyzed: 12/12/2005 ACl Sample #: 238735 Units: IJg/L Analyst: RB Analvte Result PQl Analvte Result PQl Acenaphthene BOl 10 Dimethyl phthalate BOl 10 Acenaphthylene Sal 10 p-(Dimethylamino)azobenzene BOl 10 Acetophenone BOl 10 7, 12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene BOl 20 3.3'-Dimethylbenzidine BOl 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene BOl 20 Anthracene Sal 10 2,4-Dinitrotoluene BOl 10 Benzo(a)anthracene BOl 10 2,6-Dinitrotoluene BOl 10 Senzo(a)pyrene BOl 10 Diphenylamine BOl 10 Benzo(b}fluoranthene Sal 10 Disulfoton BOl 10 Senzo(g.h,i)perylene BOl 10 Ethyl methanesulfonate Sal 20 Senzo(k)fluoranthene Sal 10 Famphur Sal 20 Benzyl alcohol Sal 20 Fluoranthene Bal 10 Bis(2-chloroethoxy)methane BOl 10 Fluorene BOl 10 Bis(2-chloroethyl)ether BOl 10 Hexachlorobenzene Sal 10 Sis(2-chloroisopropyl}ether Sal 10 Hexachlorobutadiene Sal 10 tSls(2-ethylhexyl}phthalate Sal 10 Hexachlorocyclopentadiene BOl 10 4-Sromophenyl phenyl ether Sal 10 Hexachloroethane Sal 10 Sutyl benzyl phthalate BOl 10 Hexachloropropene Sal 10 p-Chloroaniline Sal 20 Indeno(1.2,3-cd)pyrene BOl 10 Chlorobenzilate Sal 10 Isodrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether Sal 10 Isosafrole sal 10 Chrysene Sal 10 Kepone Sal 20 Di-n-butyl phthalate Bal 10 Methapyrilene BOl 100 Di-n-octyl phthalate Sal 10 Methyl methanesulfonate Sal 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a.h)anthracene sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran sal 10 2-Methylnaphthalene sal 10 1,2-Dich/orobenzene SOL 10 Naphthalene Sal 10 1,3-Dichlorobenzene sal 10 1,4-Naphthoquinone sal 10 1,4-Dichlorobenzene BOL 10 1-Naphthylamine sal 10 3,3'-Dichlorobenzidine SOL 20 2-Naphthylamine Sal 10 Diethyl phthalate SOL 10 5-Nitro-o-toluidine Sal 10 Dimethoate BOl 10 2-Nitroaniline sal 50 Page 13 of 71

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1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batse!

Base Neutral Extractables (8270C) - Appendix II Sample 10: - - GWA-7/MW-7 --Matrix: -- Water Date Sampled: 12/06/2005 Date Extracted: 12/12/2005 Date Analyzed: 12/1212005 ACl Sample #: 238735 Units: fJg/l Analyst: RB Analvte Result PQl 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine Sal 10 N-Nitrosodiethylamine Sal 20 N-Nitrosodimethylamine Sal 10 N-Nitrosodiphenylamine Sal 10 N-Nitrosodipropylamine Sal 10 N-NitrosomethylethyJamine 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 a-Toluidine Sal 10 1,2,4-Trichlorobenzene 80l 10 o,o,o-Triethyl phosphorothioate 80l 50 1,3,5-Trinitrobenzene --8Ql - 10 Page 14 of 71

IA CL 11.-

Phone: (770) 409-1444 Fax: (770) 409-1844 AD_VA_N ......C.._'E-'D-C-'H S,-l-'N_c.

.....'E-'M-Z-'S-TR__.y-L-A-B....

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 #: Vogtle IF #3 4665 lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Pesticides/PCBs (8081A18082) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/08/2005 Date Analyzed: 12/12/2005 ACl Sample #: 238735 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 Arochlor-1248 Sal 0.50 Arochlor-1254 Sal 0.50 Arochlor-1260 Sal 0.50 a-SHC SOL 0.05 b-SHC SOL 0.05 d-SHC SOL 0.05 g-SHC SOL 0.05 Chlordane SOL 0.10 4,4'-DDD Sal 0.05 4,4'-DDE Sal 0.05 4,4'-DDT SOL 0.05 Dieldrin SOL 0.05 Endosulfan I Sal 0.05 Endosulfan " Sal 0.05 Endosulfan sulfate SOL 0.05 Endrin SOL 0.05 Endrin aldehyde SOL 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor SOL 0.05 Toxaphene Sal 2.00 Page 15 of 71

IACL I

- 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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt BatseJ Chlorinated Herbicides (8151A) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/12/2005 Date Analyzed: 12/21/2005 ACL Sample #: 238735 Units: J.Jg/L Analyst: TM Analvte Result PQL 2,4-0 SOL 1.0 Dinoseb SOL 1.0 2,4,5-TP (Silvex) SOL* 1.0 2,4,5-T SOL 1.0 Page 16 of 71

IACL I

. 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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 1212912005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 6.CL Sample #: 238735 Units: IJg/L Analyst: TM Analyte Result PQL 1,2-Diororrio-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 17 of 71

IACL I

. 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.advancedchemistrylaos.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Appendix II Metals (6010B/7470Al7841/7041)

Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACl Sample #: 238735 Units: mg/l Analyst: SW/JR Analyte Result PQl Antimony Sal 0.006 Arsenic Sal 0.010 Sarium 0.024 0.020 Seryllium Sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020 Cobalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010 Mercury Sal 0.0005 Nickel SOL 0.020 Selenium. SOL 0.040 Silver Sal 0.010 Thallium SOL 0.002 Tin SOL 0.025 Vanadium SOL 0.050 Zinc 0.068 0.020 Page 18 of 71

Phone: (770)

I IACL 40~9~-1~4~44~-------------~3~03~9~A~m-w~i1e-r"':R~oa-d~*~S~u~ite~1~0~O Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

-.A~t~lan-ta-,"':G~A~3~O~36~O-P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, llC Client Proj #: Vogtle IF #3 4665 lower Roswell Road ACl Project #: 49407

1. 154 Date Received: --12/0812005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Satsel Date Sample 10 ACl# Analvte Matrix Result PQl Units Analvzed GWA-7/MW-7 238735 Cyanide (9012A) Water Sal 0.020 mg/l 12/12/2005 GWA-7/MW 238735 --Sulfide {9034) - Water- Sal 1.0 mg/l 12/10/2005 Page 19 of71

IACL l~

Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_-V:_*~_Ni~C~'E~1J~C~'H~E~'M""!!,,,l,~ST~'R~Y~L_A_B~S,~lNi~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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batser v.e. (50308/82608) - Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/14/2005 ACL Sample #: 238736 Units: IJg / 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 Bromochloromethane BOl 5 Methyl chloride BOl 10 Bromodichloromethane 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 Ghlorobenzene 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 Sal 10 Tetrachloroethene BOl 5 1,2-Dichlorobenzene Sal 5 Toluene BOl 5 1,3-Dichlorobenzene BOl 5 1,1,1-Trichloroethane BOl 5 1,4-Dichlorobenzene BOl 5 1,1,2-Trichloroethane BOl 5 Dichlorodifluoromethane BOl 5 Trichloroethene BOl 5 1,1-Dichloroethane BOl 5 Trichlorofluoromethane 85 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 1,3-Dichloropropane BOl 5 2,2-Dichloropropane SOL 15 1,1-Dichloropropene Sal 5

~".r I ,3-Dichloropropene BOl 5 trans-1,3-Dichloropropene SOL 5 Page 20 of 71

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-~1~444~---------------:3~03:':9~A:-m-Wl":':"'le-r-=R:-oa-d:-'-:S:-u i~te~1:-=OO~'A~tl:-an-ta-.-=G~A~3~O~36:':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 #: Vogtle IF #3 4665 lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/12/2005 Date Analyzed: 12/1212005 ACL Sample #: 238736 Units: ~g/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 2,4-Dimethylphenol Sal 10 4.6-Dinitro-2-methylphenol Sal 50 2,4-Dinitrophenol Sal 50 2-Nitrophenol Sal 10 4-Nitrophenol Sal 50 Pentachlorophenol Sal 50 Phenol Sal 10 2,3,4,6-Tetrachlorophenol Sal 10 2,4,5-Trichlorophenol SOL 10 2,4,6-Trichlorophenol SOL 10 Page 21 of 71

ADVANCED CHEMISTRY LABS, INC.

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

• Atlanta, GA 30360 Fax: (770) 409-1844 P.O. Sox 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batser Base Neutral Extractables (8270C) - Appendix II Sample 10: GWA-7/MW-7Dup Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/1212005 Date Analyzed: 12/12/2005 ACL Sample #: 238736 Units: IJg/L Analyst: RB Analvte Result PQL Analyte Result PQL Acenaphthene saL 10 Dimethyl phthalate SaL 10 Acenaphthylene saL 10 p-(Dimethylamino)azobenzene saL 10 Acetophenone SaL 10 7,12-Dimethylbenz(a)anthracene saL 10 2-Acetylaminofluorene saL 20 3,3'-Dimethylbenzidine saL 10 4-Aminobiphenyl saL 20 m-Dinitrobenzene saL 20 Anthracene SaL 10 2,4-Dinitrotoluene saL 10 Senzo(a)anthracene saL 10 2,6-Dinitrotoluene SOL 10 Senzo(a)pyrene saL 10 Diphenylamine SaL 10 Senzo(b)fluoranthene SaL 10 Disulfoton SOL 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 SOL 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)phthafate sal 10 Hexachlorocyclopentadiene saL 10 4-Sromophenyl phenyl ether Sal 10 Hexachloroethane SOL 10 Sutyl benzyl phthalate Sal 10 Hexachloropropene SOL 10 p-Chforoaniline SOL 20 Indeno(1,2,3-cd)pyrene Sal 10 Chlorobenzilate SOL 10 Isodrin SOL 20 2-Chloronaphthalene Sal 10 Isophorone SOL 10 4-Chlorophenyl phenyl ether SOL 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 SOL 10 Dial/ate SaL 10 Methyl parathion SaL 10 Dibenz(a,h)anthracene SOL 10 3-Methylcholanthrene SOL 10 Dibenzofuran SOL 10 2-Methylnaphthalene SOL 10 1,2-Dichlorobenzene SOL 10 Naphthalene SOL 10 1,3-Dichlorobenzene SOL 10 1A-Naphthoquinone SOL 10 1,4-Dichlorobenzene Sal 10 1-Naphthylamine Sal 10 3,3'-Dichlorobenzidine SOL 20 2-Naphthylamine SOL 10 Diethyl phthalate Sal 10 5-Nitro-o-toluidine SaL 10 Dimethoate SOL 10 2-Nitroaniline Sal 50 Page 22 of 71

.-ACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 40~9--1~4~44~--------------~3~0~39~A~m-w~i~le~r R~o-a~d-'"!"Su~it-e~1"!"00~*~A~tl~an-ta-.~G-A-3~O""36"'0-Fax: (770) 409-1844 P.O. Box 88610' Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta. GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C)

• Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12112/2005 Date Analyzed: 12/12/2005 ACL Sample #: 238736 Units: IJg / L Analyst: RB Analyte Result PQL 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n:"butylamine ""Sal 10 N-Nitrosodiethylamine Sal 20 N-Nitrosodimethylamine Sal 10 N-Nitrosodiphenylamine Sal 10 N-Nitrosodipropylamine Sal 10 N-Nitrosomethylethylamine Sal 10 N-Nitrosopiperidine Sal 20 N-Nitrosopyrrolidine Sal 40 Parathion Sal 20 Pentachlorobenzene Sal 10 Pentachloronitrobenzene Sal 20 Phenacetin Sal 20 Phenanthrene Sal 10 p-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 o,o,o-Triethyl phosphorothioate Sal 50 1,3,5-Trinitrobenzene Sal 10 Page 23 ot 71

I-ACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 40~9--1~444~--------------"~3~03~9-A-m-w~ile-r~R-oa-d~' ....S-u-ite-1-0-0-.A-t-lan-ta-,-G-A-3"0-36"0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, llC Client Proj #: Vogtle IF #3 4665 lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Pesticides/PCBs (8081A18082) - Appendix II Sample 10: GWA-7/MW-7Dup Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/08/2005 Date Analyzed: 12/12/2005 ACl Sample #: 238736 Units: IJg /l Analyst: TM Analvte Result PQl Aldrin Sal 0.05 Arochlor-1016 Sal 0.50 Arochlor-1221 Sal 0.50 Arochlor-1232 Sal 0.50 Arochlor-1242 Sal 0.50 Arochlor-1248 Sal 0.50 Arochlor-1254 Sal 0.50 Arochlor-1260 Sal 0.50 a-SHC Sal 0.05 b-SHC Sal 0.05 d-SHC Sal 0.05 g-SHC Sal 0.05 Chlordane Sal 0.10 4,4'-000 Sal 0.05 4,4'-00E Sal 0.05 4,4'-DOT Sal 0.05 Dieldrin Sal 0.05 cndosulfan I Sal 0.05 Endosulfan II Sal 0.05 Endosulfan sulfate Sal 0.05 Endrin Sal 0.05 Endrin aldehyde Sal 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor Sal 0.05 Toxaphene Sal 2.00 Page 24 of 71

rA CL 1~

Phone: (770) 409-1444 A_D_~_:4_N....CE~'D~C~'H_'E~'M~1S_T....'R....Y__L_A~BS~,.......IN....C~.

3039 Amwiler Road

• Suite 100

• Atlanta, GA 30360 Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acJ@acl-labs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/12/2005 Date Analyzed: 12/21/2005 ACL Sample #: 238736 Units: IJg/L Analyst: TM Analvte Result PQL 2,4-D SOL 1.0 Dinoseb SOL 1.0 2,4,5-TP (Silvex) Sal 1.0 2,4,5-T Sal 1.0 Page 25 of 71

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 40~9~-1~44~4~---------------:3~03~9~A~m-w~i1e-r~R~oa-d~*~S~ui~te~1~00~* A~tl!""an~ta-,~G~A~3~0~36~0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #:. -49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 ACL Sample #: 238736 Units: 1J9/L Analyst: TM Analyte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 26 of 71

IA CL 1~~

Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_VA_N~C~'E~D-o:C~H~E~M~l~ST~'R~Y~L~A~BS~,~IN~C~.

3039 Amwiler Road* Suite 100* Atlanta, GA 30360 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemislrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 1212912005

Contact:

Mr, Kurt Batsel Appendix II Metals (6010BJ7470AJ7841/7041)

Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 12106/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACL Sample #: 238736 -- Units: .mg/L -Analyst: 'SW/JR Analyte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Barium 0.022 0,020 Beryllium BOl 0.004 Cadmium Sal 0.005 Chromium Sal 0.020 Cobalt Sal 0.050 Copper Sal 0,020 lead SOL 0.010 Mercury SOL 0.0005 Nickel Sal 0.020 Selenium SOL 0.040 Silver SOL 0.010 Thallium Sal 0.002 Tin SOL 0.025 Vanadium BOL 0.050 Zinc 0.217 0.020 Page 27 of 71

IACL I ADVANCED CHEMISTRY LABS, INC.

. Phone: (770) 40~9~-1~444~--------------~3~03~9~A~m-w~ile-r-::R~oa-d~'~S~ui~te~1~OO~' A~t1:-an~ta-,-::G~A~3~0~36~O-Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: ad@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle IF #3 4665 lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Date Sample 10 ACl# Analvte Matrix Result PQl Units Analyzed GWA-7/MW-7 Dup 238736 Cyanide (9012A) Water Sal 0.020 mg/l 12/12/2005 GWA-7/MW-7 Dup 238736 Sulfide (9034) Water Sal 1.0 mg/L 12/10/2005 Page 28 of 71

IACL I 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: acf@acf-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, llC Client Proj #: Vogtle IF #3 4665 lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel v.o. (50308/82608) - Appendix I Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/14/2005 ACl Sample #: 238737 Units: IJg/l Analyst: RP Analvte Result PQl Analyte Result PQl Acetone Sal 100 Styrene BOl 5 Acrylonitrile SOL 50 1,1,1,2-Tetrachloroethane BOl 5 Benzene 5 5 1,1,2,2-Tetrachloroethane BOl 5 Bromochloromethane BOl 5 Tetrachloroethene BOl 5 Bromodichloromethane BOl 5 Toluene BOl 5 Bromoform BOl 5 1,1,1-Trichloroethane BOl 5 Carbon disulfide BOl 5 1,1 ,2-Trichloroethane BOl 5 Carbon tetrachloride SOL 5 Trichloroethene 5 5 Chlorobenzene 4J 5 Trichlorofluoromethane 60 5 Chloroethane BOl 10 1,2,3-Trichloropropane BOL 5 Chloroform BOl 5 Vinyl acetate BOl 50 1,2-Dibromo-3-chloropropane BOl 20 Vinyl chloride 1J 2 Dibromochloromethane BOl 5 m & p-Xylenes BOl 10 1,2-Dibromoethane BOl 5 o-Xylene BOl 5 trans-1,4-Dichloro-2-butene Sal 10 1,2-Dichlorobenzene BOl 5 1,4-Dichlorobenzene SOL 5 1,1-Dichloroethane 18 5 1,2-Dichloroethane BOl 5 1,1-Dichloroethene BOl 5 cis-1,2-Dichloroethene 9 5 trans-1,2-Dichloroethene BOl 5 1,2-Dichloropropane BOl 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene BOl 5 Ethylbenzene BOl 5 2-Hexanone BOl 50 Methyl bromide SOL 10 Methyl chloride BOl 10 Methyl ethyl ketone BOl 100 Methyl iodide Sal 5 4-Methyl-2-pentanone BOl 50 Methylene bromide BOL 5 Methylene chloride BOL 5 Page 29 of 71

. Phone: (770)

I IACL 40~9~-1~4"':"44O:------------------:3~03~9~A~m-Wl~*le-r~R~oa-d~.~S~u~ite~1~0~0 ADVANCED CHEMISTRY LABS, INC.

-.A~t~la~nta-.~G~A~3~0~36~0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-labs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12113/2005 Date Analyzed: 12/14/2005 ACl Sample #: 238737 Units: IJg/L Analyst: TM Analyte Result PQl 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 30 of 71

Phone: (770)

I IACL 40:::::9-:""'::1~444":"':""'---------------::3~03:::::9:-:A:-m-Wl"::'*le-r-=R:-oa-d:-*-::S:-ui~te~1~OO~*

ADVANCED CHEMISTRY LABS, INC..

A~tl:-an~ta-,-::G~A~3~0~36~0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, llC Client Proj #: Vogtle IF #3 4665 lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12129/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041)

Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACl Sample #: 238737 Units: mg/l Analyst: SW Analvte Result PQl Antimony Sal 0.006 Arsenic Sal 0.010 Sarium 0.044 0.020 Seryllium Sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020 Cobalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010

~Ii,..."'ol Sal 0.020 Selenium Sal 0.040 Silver Sal 0.010 Thallium Sal 0.002 Vanadium Sal 0.050 Zinc 0.194 0.020 Page 31 of 71

. Phone: (770)

I IACL 409-~1:-:'444~--------------~3~03~9~A~m-w~ile-r~R~oa-d:-*~S~ui~te~1~OO~*-A~tl~an~ta-,~G~A~3~0~36~0-Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Date Sample 10 ACL# Analvte Matrix Result PQL Units Analyzed GWC-13/MW-13 238737 Mercury (7470A) Water SOL 0.0005 mg/L 12/19/2005

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409-~1:"':'444~--------------~3~0~39~A':'"m-w~il~e~r R~o-a~d-'~Su~it-e-1"'OO""'-A"'tl-an-ta-.-G-A:"3"0-36 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 #: Vogtle LF #3 4665 Lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel v.o. (50308/82608) - Appendix I Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 12/0512005 Date Extracted:

Date Analyzed: 12/14/2005 ACl Sample #: 238738 Units: jJg/l Analyst: RP Analyte Result PQl Analyte Result Pgl Acetone Sal 100 Styrene Sal 5 Acrylonitrile Sal 50 1,1,1,2-Tetrachloroethane SOL 5 Senzene Sal 5 1,1,2,2-Tetrachloroethane SOL 5 Sromochloromethane SOL 5 Tetrachloroethene Sal 5 Sromodichloromethane Sal 5 Toluene SOL 5 Sromoform Sal 5 1,1,1-Trichloroethane Sal 5 Carbon disulfide Sal 5 1,1,2-Trichloroethane Sal 5 Carbon tetrachloride Sal 5 Trichloroethene Sal 5 Chlorobenzene Sal 5 T r~chleroflueromethane Sal 5 Chloroethane Sal 10 1,2,3-Trichloropropane Sal 5 Chloroform Sal 5 Vinyl acetate Sal 50 1,2-Dibromo-3-ehloropropane Sal 20 Vinyl chloride Sal 2 Dibromochloromethane Sal 5 m & p-Xylenes Sal 10 1,2-Dibromoethane SOL 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 SOL 5 trans-1,2-Dichloroethene SOL 5 1,2-Dichloropropane Sal 5 cis-1,3-Dich loropropene SOL 5 trans-1,3-Dichloropropene Sal 5 Ethylbenzene Sal 5 2-Hexanone Sal 50 Methyl bromide Sal 10 Methyl chloride Sal 10 Methyl ethyl ketone Sal 100 Methyl iodide Sal 5 4-Methyl-2-pentanone Sal 50 Methylene bromide Sal 5 Methylene chloride Sal 5 Page 33 of 71

IA CL 1~

. Phone: (770) 409-1444 Fax: (770) 409*1844 A_D_VA_N~C~'E~V~C_'H~E_'M.......Z_ST_'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 www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 12/05/2005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 ACL Sample #: 238738 Units: ~g/L Analyst: TM Analyte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 34 of 71

IA CL 1~~

. Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_~_~~N~CE~1J~C~'H_E-:-'M~IS~T~'R~Y~L_A~BS~,~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 #: Vogtle IF #3 4665 lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041)

Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 12/0512005 Date Extracted:

Date Analyzed: 12/13/2005 ACl Sample #: 238738 Units: mg/l Analyst: SW Analvte Result PQl Antimony Sal 0.006 Arsenic Sal 0.010 Barium Sal 0.020 Beryllium Sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020 Cobalt Sal 0.050 Copper BOl 0.020 lead BOl 0.010 Nickel BOl 0.020 Selenium Sal 0.040 Silver Sal 0.010 Thallium BOl 0.002 Vanadium Sal 0.050 Zinc 0.042 0.020 Page 35 of 71

IACL I - ADVANCED-CHEMISTRYUBS;1NC.

. Phone: (770) 40~9~-1~444~--------------~3~03~9-:A~m-w~ile-r~R-oa-d~.~S~ui~te-1""!"OO~*-A~tl-an-ta-.~G-A-:3""!"O'!""36~0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, llC Client Proj #: Vogtle IF #3 4665 lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Date Sample 10 ACL# Analyte Matrix Result POL - - tlnits Analyzed GWA-15/MW-15 238738 Mercury (7470A) Water BOl 0.0005 mg/L 12/19/2005 Page 36 of 71

IACL I ADVANCED CHEMISTRY LABS, INC.

. Phone: (770) 40~9-~1~4~44~--------------~3~0~39~A~m-W1~'~le~r Fax: (770) 409-1844 R~o-a~d-*~Su~it-e~1~00~.-A~t1~an-ta-,"'!!!G~A-3~O""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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel v.o. (50308/82608) - Appendix I Sample ID: GWC-17/MW-17 Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/14/2005 ACL Sample #: 238739 Units: ~g/L Analyst: RP Analyte Result PQL Analyte Result PQL Acetone BOL 100 Styrene BOL 5 Acrylonitrile BOl 50 1,1 ,1 ,2-Tetrachloroethane BOL 5 Benzene BOL 5 1,1,2,2-Tetrachloroethane BOL 5 Bromochloromethane BOL 5 Tetrachloroethene BOL 5 Bromodichloromethane BOL 5 Toluene BOL 5 Bromoform BOL 5 1,1,1-Trichloroethane BOL 5 Carbon disulfide BOL 5 1,1,2-Trichloroethane BOL 5 Carbon tetrachloride BOL 5 Trichloroethene BOL 5 Chlorobenzene BOL 5 Trichloroftuoromethane BOL 5 Chloroethane BOL 10 1,2,3-Trichloropropane BOL 5 Chloroform BOL 5 Vinyl acetate BOL 50 1.2-Dibromo-3-chloropropane BOL 20 Vinyl chloride BOL 2 Dibromochloromethane BOL 5 m & p-Xylenes BOL 10 1,2-Dibromoethane BOL 5 o-Xylene BOL 5 trans-1,4-Dichloro-2-butene BOL 10 1,2-Dichlorobenzene BOL 5 1,4-Dichlorobenzene BOL 5 1,1-Dichloroethane BOL 5 1,2-Dichloroethane BOL 5 1,1-Dichloroethene BOL 5 cis-1 ,2-Dichloroethene BOL 5 trans-1,2-Dichloroethene BOL 5 1,2-Dichloropropane BOL 5 cis-1.3-Dichloropropene BOL 5 trans-1.3-Dichloropropene BOL 5 Ethylbenzene BOL 5 2-Hexanone BOL 50 Methyl bromide BOL 10 Methyl chloride BOL 10 Methyl ethyl ketone BOL 100 Methyl iodide BOL 5 4-Methyl-2-pentanone BOL 50 Methylene bromide BOL 5 Methylene chloride BOL 5 Page 37 of71

IA CL 1~~

Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_VA_N~C~'E""!"",'D~C~'H"!,,,,,,"E~'M~1._ST......'R.....Y_LA~BS_, __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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011)

• Appendix II Sample 10: GWC-17/MW-17 Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 ACL Sample #: 238739 Units: ~g/L Analyst: TM Analyte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 38 of 71

iA CL 1~~

. Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_J':_:4~N~C~'ED~CH~EM~IS~T~'R~Y-.-LA_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 www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041)

Sample 10: GWC-17/MW-17 Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACl Sample #: 238739 Units: mg/L Analyst: SW A"alyte Result PQl Antimony Sal 0.006 Arsenic Sal 0.010 Sarium Sal 0.020 Beryllium Sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020 Cobalt " Sal 0.050 Copper BOl 0.020 lead Sal 0.010 Nickel BOl 0.020 Selenium- -- Sal 0.040 Silver Sal 0.010 Thallium Sal 0.002 Vanadium BOl 0.050 Zinc 0.096 0.020 Page 39 of 71

_ Phone: (770)

I IACL 40~9~-1~444~--------------~3~03~9~A~m-w"':':'ile-r-=R~oa-d:-.~S~ui~te~1~00~*

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

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 #: Vogtle IF #3 4665 lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Satsel Date Sample 10 ACL# Analyte Matrix Result PQL Units Analyzed GWC-17/MW-17 238739 Mercury (7470A) Water Sal 0.0005 mg/l 12/19/2005 Page 40 of 71

IACL I ADVANCED CHEMISTR Y LABS, INC

. Phone: (770) 40~9~.1~4~44~--------------~3~0~39~A~m-W1~*I~er~R~o-a~d-. "'!"'Su-it-e-1~00~'~A~tl-an-ta-,"'G-A-3"0-36"0-Fax: (770) 409-1844 P.O. Sox 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel V.O. (5030B/8260B)-Appendix I Sample 10: EQ-Blank Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/14/2005 ACl Sample #: 238740 Units: IJg/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 Sromoch loromethane Sal 5 Tetrachloroethene Sal 5 Sromodichloromethane Sal 5 Toluene Sal 5 Sromoform Sal 5 1,1,1-Trichloroethane Sal 5 Carbon disulfide Sal 5 1,1,2-Trichloroethane Sal 5 Carbon tetrachloride Sal 5 Trichloroethene Sal 5 Chlorobenzene Sal 5 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 SOl- 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 Methyl ethyl ketone Sal 100 Methyl iodide Sal 5 4-Methyl-2-pentanone Sal 50 Methylene bromide Sal 5 Methylene chloride Sal 5 Page 41 of 71

IA CL il-

- Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_v;_~N.....c~'E-'D-C-'H......E-'M.....z-'ST.....'R......y~LA~BS~,~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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: EO-Blank Matrix: Water Date Sampled: 12/06/2005 Date Extracted: 12/13/2005 Date Analyzed: 12/14/2005 ACL Sample #: 238740 Units: 1J9/L Analyst: TM Analvte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 42 of 71

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 409~-1~4~44~-------------~3~03~9~A~m-W1~*le-r~R~oa-d!""*~S~ui~te~1~OO~* A~t~lan-ta-,~G-A-3""'!0~36~0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 a-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Appendix I Metals (60108/7841/7041)

Sample 10: EO-Blank Matrix: Water Date Sampled: 12/06/2005 Date Extracted:

Date Analyzed: 12/13/2005 ACL Sample #: 238740 Units: mg/L Analyst: SW Analyte Result PQl Antimony SOL 0.006 Arsenic SOL 0.010 Sarium SOL 0.020 Beryllium SOL 0.004 Cadmium SOL 0.005 Chromium SOL 0.020 Cobalt SOL 0.050 Copper SOL 0.020 Lead SOL 0.010 Nickel SOL 0.020 Selenium SOL 0.040 Silver Sal 0.010 Thallium Sal 0.002 Vanadium SOL 0.050 Zinc Sal 0.020

IACL I

. 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 'INM.advancedchemrstrylabs;com Client: The Dextra Group, LLC Client Proj #: Vogtle LF#3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Date Sample 10 ACL# Analvte Matrix Result PQL Units Analyzed EQ-Blank 238740 Mercury (7470A) Water BQl 0.0005 ***mg/L . 12/~ 9/2005 Page 44 of 71

IACL 1~

. Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_J':_'AN~CE~D~C~'H_EM~IS~T~'R .......Y~LA_BS__,~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 #: Vogtle LF #3 4665 lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel V.O. (50308/82608) - Appendix II Sample 10: Trip Blank Matrix: Water Date Sampled: 12/05/2005 Date Extracted:

Date Analyzed: 12/14/2005 ACl Sample #: 238741 Units: IJg/L Analyst: RP Analyte 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 Bromochloromethane BOl 5 Methyl chloride BOl 10 Bromodichloromethane 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 Sal 5 1,2-Dichlorobenzene BOl 5 Toluene BOl 5 1,3-Dichlorobenzene BOl 5 1,1,1-Trichloroethane BOl 5 1,4-Dichlorobenzene BOl 5 1,1,2-Trichloroethane BOl 5 Dichlorodiftuoromethane 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 1,3-Dichloropropane BOl 5 2,2-Dichloropropane BOl 15 1,1-Dichloropropene BOl 5 cis-1 ,3-Dichloropropene BOl 5 trans-1,3-Dichloropropene BOl 5 Page 45 of 71

IA CL 1~

Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_Jl:_~NI_CE~D~CH~E~M~IS~T~'R~Y~L~A_BS~,~IN~C~.

3039 Amwiler Road, Suite 100, Atlanta, GA 30360 P. O. Box 88610, Atlanta, GA 30356 e-mail: acl@acl-Iabs.net QUALITY CONTROL SECTION Page 46 of 71

IA CL 11...o-

. Phone: (770) 409-1444 Fax: (770) 409*1844 A_D_~_'AM.....C~~~'D-C-'H"""""""'E-'M.....1._'SJ:~'R~Y....._..LA-BS~,

3039 Amwiler Road" Suite 100* Atlanta, GA 30360 P.O. Box 88610* Atlanta, GA 30356 IN~C_"

e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: -Vogtle LE #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

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

SUMMARY

Water Dlbromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene (77-137) (72-138) (84-112) (77-125)

ACL Sample #

238733 100 94 103 98 238734 98 95 103 99 238737 101 95 102 101 238738 101 96 102 101 238739 102 98 105 97 238740 99 95 102 100

• " Matrix Interference DO=Diluted Out Page 47 of 71

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 40~9~-1~4~44~--------------~3~0~39~A~m-Wl~'~le~r R~o-a~d-.~Su~it~e~1~00~*-A~tl~an-ta-,~G~A-3~O~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 #: Vogtle IF #3 4665 lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel v.c. (S030B/8260Bt*"Appendix I Sample 10: ._.------_. Matrix: Water Date Sampled: -----_.._-.

Date Extracted:

Date Analyzed: 12/14/2005 ACl Sample #: - Blank' Units: -fJg/l ---Analyst: --RP Analyte Result PQl Analyte Result PQl Acetone SOL 100 Styrene SOL 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 Sromoform Sal 5 1,1,1-Trichloroethane Sal 5 Carbon disulfide Sal 5 1,1,2-Trichloroethane Sal 5 Carbon tetrachloride Sal 5 Trichloroethene Sal 5 Chlorobenzene Sal 5 Trich lorofluoromethane 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 SOL 5 cis-1,2-Dichloroethene Sal 5 trans-1,2-Dichloroethene Sal 5 1,2-Dichloropropane Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene Sal 5 Ethylbenzene Sal 5 2-Hexanone Sal 50 Methyl bromide Sal 10 Methyl chloride Sal 10 Methyl ethyl ketone Sal 100 Methyl iodide Sal 5 4-Methyl-2-pentanone Sal 50 Methylene bromide Sal 5 Methylene chloride Sal 5 Page 48 of 71

IA CL 1~~

Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_~_:4~N~CE~D~C~'H_E_'M~IS_T_'R_Y_L_A_B...-S,_IN_C_o 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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

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

• Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water Dibromofluoromethane 1,2-Dichloroethane-d4 - - -l'oluene-d8 ~-- *--4-Bromofluorobenzene (77-137) (72-138) (84-112) (77-125)

ACL Sample #

238735 100 98 104 102 238736 103 95 104 99 238741 99 97 100 100 00 Matrix Interference DO=Diluted Out Page 49 of 71

Phone: (770)

I IACL 40:':9~-1:-:4~44~---------------3::":0~3~9~A-m-w'::'ile-r-=R:-o-ad":""'~S::-u~it-e~1 ADVANCED CHEMISTRY LABS, INC 0::":0:-'~A~tl~an~ta-,~G:-:A~30::":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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12129/2005

Contact:

Mr. Kurt Batsel v.a. (50308/82608) - Appendix II Sample 10: --.._._._.- Matrix: Water Date Sampled: ---------..

Date Extracted:

Date Analyzed: 12/14/2005 ACL Sample #: Blank Units: ~g/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 Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile SOL 100 Senzene SOL 5 Methyl bromide Sal 10 Sromochloromethane SOL 5 Methyl chloride SOL 10 Sromodichloromethane 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 Sal 10 Methylene chloride SOL 5 Chloroform SOL 5 Naphthalene SOL 5 Chloroprene Sal 20 Propionitrile SOL 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane SOL 5 1,1,1 2-Tetrachloroethane 0 Sal 5 1,2-Dibromoethane SOL 5 1,1,2,2-Tetrachloroethane SOL 5 trans-1,4-Dichloro-2-butene SOL 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene SOL 5 Toluene SOL 5 1 3-Dichlorobenzene 0 SOL 5 1 1,1-Trichloroethane- -

0 SOL 5 1,4-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 Sal 5 1,2 3-Trichloropropane 0 Sal 5 1,1-Dichloroethene SOL 5 Vinyl acetate SOL 50 cis-1,2-Dichloroethene Sal 5 Vinyl chloride Sal 2 trans-1,2-Dichloroethene Sal 5 m & p-Xylenes Sal 10 1,2-Dichloropropane SOL 5 o-Xylene SOL 5 1,3-Dichloropropane Sal 5 2 2-Dichloropropane 0 Sal 15 1,1-Dichloropropene Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1 ,3-Dichloropropene Sal 5 Page 50 of 71

ADVANCED CHEMISTRY LABS, INC.

GC/MS UNIT # 3 WATER VOLATilE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Sequence Date: 12-14-05 Matrix Spike - Sample No.: 238733-1 SPIKE SAMPLE MS MS ac.-

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

1,1-dichloroethene 20.0 0.0 17.2 86 (54-144) benzene 20.0 0.0 21.1 106 (82-132) trichloroethene 20.0 0.0 21.8 109 (73-128) toluene 20.0 0.0 22.0 110 (83-130) chlorobenzene 20.0 0.0 23.2 116 (82-123)

SPIKE MSD MSD ADDED CONCENTRATION  %  % ac LIMITS COMPOUND (1J9/L ) (1J9/l ) REC # RPD # RPD REC.

1,1-dichloroethene 20.0 17.0 85 1 14 (54-144) benzene 20.0 20.6 103 3 14 (82-132) trichloroethene 20.0 21.2 106 3 14 (73-128) toluene 20.0 22.1 111 1 13 (83-130) chlorobenzene 20.0 22.0 110 5 13 (82-123)

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

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

Page 51 of71

IACL I ADVANCED CHEMISTRY LABS, INC.

. Phone: (770) 40~9~-1:-:'44~4~-------------~3~03~9~A-m-w~ile-r Fax: (770) 409-1844

~Ro-a"":'d-'~Su~it-e~10~0-'~At~la-nt-a,~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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

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)

ACLSample#

238735 18 27 34 238736 17 23 37

'"' Matrix Interference DO=Diluted Out Page 52 of 71

IACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 40~9~-1~44~4~-------------~3~03~9~A~m-Wl~*le-r-:R~oa-d~*~S~ui~te-1~0~0 -.A~tl~an-ta-,~G~A-3~0-36~0-Fax: (770) 409-1844 P.O. Box 88610* Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Acid Extractables (8270C) - Appendix II Sample 10: Matrix: Water Date Sampled:

Date Extracted: 12/12/2005 Date Analyzed: 12/12/2005 ACL Sample #: Blank Units: IJg /L Analyst: RB Analvte Result PQL 4-Chloro-3-methy/phenol 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 2,4-Dimethylphenol saL 10 4,6-Dinitro-2-methy/ph enol Sal 50 2,4-Dinitrophenol saL 50 2-Nitrophenol saL 10 4-Nitrophenol saL 50 Pentachlorophenol SaL 50 Phenol SaL 10 2,3,4,6-Tetrachlorophenol sal 10 2,4,5-Trichlorophenol sal 10 2,4,6-Trichlorophenol saL 10 Page 53 of 71

ADVANCED CHEMISTRY LABS, INC.

SEMI*VOL GC/MS UNIT # 4 ACID EXTRACTABLES (8270C)

WATER SEMI-VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Sequence Date: 12-12-05 Matrix Spike - Sample No.: LCS121205 SPIKE SAMPLE MS MS QC.

COMPOUND ADDED CONCENTRATION CONCENTRATION  %- - LIMITS

(~g/L) (~g/L) (lJg/L) REC # REC.

Pentachlorophenol 200 0 121 60.5 (9-103)

Phenol 200 0 63 31.5 (12-89) 2-Chlorophenol 200 0 130 65.0 (27-123) 4-Chloro~3-methylphenol - 200 0 -137 - £8.5 (23~97) 4-Nitrophenol 200 0 43 21.5 (10-80)

SPIKE MSD MSD QC LIMITS COMPOUND ADDED CONCENTRATION  %  %

(lJg/L) (~g1L) REC # RPD # RPD REC.

Pentachlorophenol 200 134 67.0 10.2 50 (9-103)

Phenol 200 61 30.5 3.2 42 (12-89) 2-Chlorophenol 200 129 64.5 0.8 40 (27-123) 4-Chloro-3-methylphenol 200 143 71.5 4.3 42 (23-97) 4-Nitrophenol 200 32 16.0 29.3 50 (10-80)

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

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

Page 54 of 71

I-ACL I Phone: (770) 409-1444 ADVANCED CHEMISTRY LABS, INC.

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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

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

ACLSample#

238735 47 46 52 238736 54 52 46

• • Matrix Interference OO=Oiluted Out Page 55 of 71

Phone: (770)

I IACL 409~-1~4~44~--------------~3~0~39~A~m-W1~'~le~r Fax: (770) 409-1844 ADVANCED CHEMISTRY LABS, INC.

R~o-a~d-'~S~uit-e~1~00~'-A~t1~an-ta-,~G~A-3~0~3"'!"60~

P.O. Sox 88610

• Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample ID: ---------_. Matrix: Water Date Sampled: -----------

Date Extracted: 12/12/2005 Date Analyzed: 12/12/2005 ACL Sample #: Blank Units: IJg /L Analyst: RB Analvte Result PQL Analyte Result PQL Acenaphthene Sal 10 Dimethyl phthalate Sal 10 Acenaphthylene Sal 10 p-(Dimethylamino)azobenzene Sal 10 Acetophenone Sal 10 7,12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene Sal 20 3,3'-Dimethylbenzidine Sal 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene Sal 20 Anthracene Sal 10 2,4-Dinitrotoluene Sal 10 Senzo(a)anthracene Sal 10 2.6-Dinitrotoluene Sal 10 Senzo(a)pyrene Sal 10 Diphenylamine Sal 10 Senzo(b)fluoranthene Sal 10 Disulfoton Sal 10 Senzo(9,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(t,2,3-cd)pyrene Sal 10 Chlorobenzilate Sal 10 Isodrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether Sal 10 Isosafrole Sal 10 Chrysene Sal 10 Kepone Sal 20 Di-n-butyl phthalate Sal 10 Methapyrilene Sal 100 Di-n-octyl phthalate Sal 10 Methyl methanesulfonate Sal 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a, h)anthracene Sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran Sal 10 2-Methylnaphthalene Sal 10 1,2-Dichlorobenzene Sal 10 Naphthalene Sal 10 1,3-Dichlorobenzene Sal 10 1A-Naphthoquinone Sal 10 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-N itroaniline Sal 50 Page 56 of 71

I. ACL I ADVANCED CHEMISTR Y LABS, INC Phone: (770) 40~9~-1~4~44O:-----------------::3~0~39~A~m-w-::i~le~r Fax: (770) 409*1844 R~o-a~d-.~Su-it-e-1""OO~'-A"t1-an-ta-,-G-A:"3-0-36 P.O. Box 88610. Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: VogtJe LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Base Neutral Extractables (8270C) - Appendix II Sample 10: Matrix: Water Date Sampled:

Date Extracted: 12/12/2005 Date Analyzed: 12/12/2005 ACL Sample #: Blank Units: ~g/L Analyst: RB Analvte Result PQL 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine Sal 10 N-Nitrosodiethylamine Sal 20 N-Nitrosodimethylamine Sal 10 N-Nitrosodiphenylamine Sal 10 N-Nitrosodipropylamine Sal 10 N-Nitrosomethylethylamine Sal 10 N-Nitrosopiperidine Sal 20 N-Nitrosopyrrolidine Sal 40 Parathion Sal 20 Pentachlorobenzene Sal 10 Pentachloronitrobenzene Sal 20 Phenacetin Sal 20 Phenanthrene Sal 10 p-Phenylenediamine Sal 10 Phorate Sal 10 Pronamide Sal 10 Pyrene Sal 10 Safrole Sal 10 1,2,4,5-Tetrachlorobenzene Sal 10 Thionazin Sal 20 o-Toluidine Sal 10 1,2,4-Trichlorobenzene Sal 10 o,o,o-Triethyl phosphorothioate Sal 50 1,3,5-Trinitrobenzene Sal 10 Page 57 of 71

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: 12-12-05 Matrix Spike - Sample No.: LCS121205 SPIKE SAMPLE MS MS ac.

ADDED CONCENTRATION CON CENTRATION  % LIMITS COMPOUND (lJg/L) (jJg/L) (lJgJL) REC # REC.

1,2,4-Trichlorobenzene 100 0 72 72.0 (39-98)

Acenaphthene 100 0 75 75.0 (46-118) 2,4-Dinitrotoluene 100 0 88 88.0 (24-96)

Di-n-butyl phthalate 100 0 53 53.0 (11-117)

Pyrene 100 0 61 61.0 (26-127)

N-Nitrosodi-n-propylamine 100 0 63 63.0 (41-116) 1A-Dichlorobenzene 100 0 58 58.0 (36-97)

SPIKE MSD MSD ADDED CONCENTRATION  %  % QC LIMITS COMPOUND IJg/L lJg/L REC # RPD # RPD REC.

1,204- Trichlorobenzene 100 73 73.0 1.4 28 (39-98)

Acenaphthene 100 61 61.0 20.6 31 (46-118) 2,4-Dinitrotoluene 100 72 72.0 20.0 38 (24-96)

Di-n-butyl phthalate 100 62 62.0 15.7 40 (11-117)

Pyrene 100 57 57.0 6.8 31 (26-127)

N-Nitrosodi-n-propylamine 100 61 61.0 3.2 38 (41-116) 1A-Dichlorobenzene 100 57 57.0 1.7 28 (36-97)

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

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

Page 58 of 71

IA CL 1~~

Phone: (770) 409-1444 Fax: (770) 409-1844 A_D_Jl:_"AN~C~'E~D~C~'H~E~'M~'L~ST~'R~Y~L_A~BS~,~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 #: Vogtle LF#3 4665 Lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

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

SUMMARY

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

ACl Sample #

238735 100 47 238736 97 43 1rl< Matrix Interference DO=Diluted Out Page 59 of 71

IACL I 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@acJ-labs.net WNW.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Pesticides/PCBs (8081A18082)* Appendix II Sample 10: Matrix: Water Date Sampled:

Date Extracted: 12/08/2005 Date Analyzed: 12/12/2005 ACL Sample #: Blank Units: ~g/L Analyst: TM Analyte Result PQl Aldrin SOL 0.05 Arochlor-1016 SOL 0.50 Arochlor-1221 SOL 0.50 Arochlor-1232 SOL 0.50 Arochlor-1242 SOL 0.50 Arochlor-1248 SOL 0.50 Aroch lor-1254 SOL 0.50 Arochlor-1260 SOL 0.50 a-SHC SOL 0.05 b-SHC SOL 0.05 d-BHC Sal 0.05 r'1-SHC SOL 0.05 Chlordane Sal 0.10 4,4'-DDD SOL 0.05 4,4'-DDE Sal 0.05 4,4'-DDT SOL 0.05 Dieldrin SOL 0.05 Endosulfan I SOL 0.05 Endosulfan II Sal 0.05 Endosulfan sulfate Sal 0.05 Endrin SOL 0.05 Endrin aldehyde Sal 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor Sal 0.05 Toxaphene SOL 2.00 Page 60 of 71

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

Instrument 10: HP5890A-ECDGC#1 Column: STx-CLP, 30m, O.53mm, O.5J.lm ACL #: LCSW120805 Matrix: WATER Extraction Date: 12/8/05 Analysis Date: 12/12/05 Initial Volume: 1000.0 ml Final Volume: 1 Dilution Factor: 1 Unit: fJgJL orppb R.T. Spike sample MS MS R.T. MSD MSD RPD QCLimits Pesticide MS Added Result Cone. Ree. (%) MSD Cone. Rec. (%) (%) RPD  % Recoverv a-BHC 5.503 0.500 0.000 0.560 112 5.507 0.554 111 1 25 40 160 g-BHC (lindane) 6.156 0.500 0.000 0.540 108 6.160 0.530 106 2 25 40 160 b-BHC 6.346 0.500 0.000 0.511 102 6.350 0.505 101 1 25 40 160' d-BHC 6.762 0.500 0.000 0.546 109 6.766 0.537 107 2 25 40 160 Heptachlor 7.246 0.500 0.000 0.549 110 7.249 0*541 108 2 25 40 160 Aldrin 7.999 0.500 0.000 0.547 109 8.003 0.524 105 4 25 40 160 Heptachlor Epoxide 9.648 0.500 0.000 0.560 112 9.651 0.549 110 2 25 40 160 DOE 10.645 0.500 0.000 0.552 110 10.648 0.536 107 3 25 40 160 a-Endosulfan I 10.787 0.500 0.000 0.549 110 10.790 0.543 109 1 25 40 160 Dieldrin 11.513 0.500 0.000 0.613 123 11.515 0.575 115 6 25 40 160 Endrin 12.221 0.500 0.000 0.612 122 12.223 0.597 119 3 25 40 160 DOD 12.500 0.500 0.000 0.609 122 12.502 0.593 119 3 25 40 160 b-Endosulfan II 12.939 0.500 0.000 0.562 112 12.941 0.547 109 3 25 40 160 DDT 13.391 0.500 0.000 0.481 96 13.393 0.467 93 3 25 40 160 Endrin Aldehyde 14.314 0.500 0.000 0.518 104 14.315 0.502 100 3 25 40 160 Methoxychlor 15.053 0.500 0.000 0.584 117 15.054 0.574 115 2 25 40 160 Mirex 15.314 0.500 0.000 0.464 93 15.315 0.455 91 2 25 40 160 Endosulfan Sulfate 15.749 0.500 0.000 0.530 106 15.749 0.506 101 5 25 40 160 Endrin Ketone 16.633 0.500 0.000 0.521 104 16.633 0.512 102 2 25 40 160 Pesticide Calculation based on curve prep. on 11/21105

• Outside QC limits Page 61 of 71

tA CL 1~~

Phone: (770) 409-1444 A_D_VA_N~C~'E~'D~C~'H~'E_'M~z_'ST.~'R......Y~L_A_BS,.....IM~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.advancedchemrstrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water oeAA (30-130)

ACLSample#

238735 93 238736 106

• • Matrix Interference DO=Diluted Out Page 62 of 71

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 #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Chlorinated Herbicides (8151A) - Appendix II Sample 10: Matrix: Water Date Sampled:

Date Extracted: 12/12/2005 Date Analyzed: 12/21/2005 ACL Sample #: Blank Units: IJg/L Analyst: TM Analyte Result PQL 2,4-D Sal 1.0 Dinoseb sal 1.0 2,4,5-TP (Silvex) sal 1.0 2,4,5-T sal 1.0 Page 63 of71

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

Instrument ID: HP5890A-ECDGC#5 Column: STx-CLP,30m, O.53mm, O.5J.lm ACL#: LCSW121205 Matrix: WATER Extraction Date: 12/12105 Analysis Date: 12/12/05 Initial Volume: 1000.0 ml Final Volume: 4 Diluuon Factor: 1 Unit: fJg/L orppb R.T. Spike Sample MS MS R.T. MSD MSD RPD Q Herbicide MS Added Result Cone. Ree. ('Yo) MSD Cone. Ree. ('Yo) (%J RPD Oalapon 6.819 4.000 0.000 3.832 96 6.819 3.744 94 2 25 4-Nitrophenol 19.420 4.000 0.000 4.383 110 19.423 4.185 105 5 25 Oicamba 21.479 0.800 0.000 0.670 84 21.481 0.610 76 9 25 Mepp 0.000 0.000 0.000 25 MCPA 22.253 400.000 0.000 410.812 103 22.254 384.680 96 7 25 Dichlorprop 22.880 4.0.00 0.000-_ 3.297.. - - 82 22.882 3.287- 82 a 25 2,4-0 23.612 4.000 0.000 3.600 90 23.614 3.474 87 4 25 Pentachlorophenol 23.841 0.400 0.000 0.412 103 23.843 0.395 99 4 25 Silvex(2,4.5-TP) 24.383 0.800 0.000 0.775 97 24.385 0.757 95 2 25 2,4,5-T 24.808 0.800 0.000 1.048 131 24.809 1.027 128 2 25 Oinoseb 25.484 0.800 0.000 1.203 150 25.485 1.170 146 3 25 2,4-08 26.082 4.000 0.000 3.802 95 26.083 3.618 90 5 25 Picloram 28.017 0.400 0.000 0.257 64 28.019 0.242 61 6 25 Acifluorfen 29.496 0.400 0.000 0.247 62 29.498 0.240 60 3 25 Herbicide Calculation based on CUNe prep. on 08126105

• Outside OC limits Page 64 of 71

tACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 40~9~.1~44~4~-------------~3~03~9~A-m-w~ile-r Fax: (770) 409-1844

~Ro-a~d-*S~u~it-e~10~O-*~At~la-nt-a,~G~A-3~O~36~O-P.O. Box 88610* Atlanta. GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Miscellaneous Organics (8011) - Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water Bromofluorobenzene (40-140)

ACLSample#

238733 89 238734 99 238735 96 238736 94 238737 68 238738 65 238739 96 238740 97

"" Matrix Interference DO=Diluted Out Page 65 of 71

fACL I ADVANCED CHEMISTRY LABS, INC.

Phone: (770) 40~9~-1~44~4::---------------~3~03~9~A~m-w~ile-r-=R~Oa-d~'~S~ui~te-1~0~0 -.A~t~lan~ta-,~G~A~3~0~36~0-Fax: (770) 409-1844 P.O. Box 88610. Atlanta, GA 30356 e-mail: acJ@acl-labs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACl Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

- .. Mr~ Kurt Batsel Miscellaneous Organics (8011) - Appendix II Sample 10: ----------- Matrix: Water Date Sampled:

Date Extracted: 12/13/2005 Date Analyzed: 12/13/2005 ACl Sample #: Blank Units: ~g/L Analyst: TM Analyte Result PQl 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Page 66 of 71

Advanced Chemistry Labs Pesticides Spike F?eporl (SW-B46 Method B011/Method 504.1)

Instrument 10: HP5890A-ECDGC#5 Column: STx-CLP, 30m, O.53mm, O.5pm ACL #: LCSW121305 Matrix: Water E1traction Date: 12/13/05 Analysis Date: 12113105 Initial Volume: 35.0 ml Final Volume: 2 Dilution Factor: 1 Unit: pglL orppb R.T. Spike Sample MS MS R.T. MSD MSD RPD QCLimits Pesticide MS Added Result Cone. Ree. (%) MSD Cone. Ree. (%) (%) RPD  % Reeoverv EDB 6.091 0.500 0.000 0.442 88 6.089 0.443 89 0 25 60 140 TCP 8.770 0.500 0.000 0.500 100 8.767 0.482 96 4- 25 5U 140 DBep 12.104 0.500 0.000 0.421 84 12.108 0.386 77 9 25 60 140 Outside QC limits Page 67 of71

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

Phone: (770) 40~9~-1~444~--------------~3~03~9~A~m-w~ile-r""!!!R-oa-d~*~S-u-ite-1 ... 00....-.*A-t-lan-ta-.....

P.O. Box 88610* Atlanta, GA 30356 G-A-3..0 0-e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group, LLC Client Proj #: Vogtle LF #3 4665 Lower Roswell Road ACL Project #: 49407

1. 154 Date Received: 12/08/2005 Marietta, GA 30068-0000 Date Reported: 12/29/2005

Contact:

Mr. Kurt Batsel Appendix II Metals (6010B/7470Al7841/7041)

Sample 10: Matrix: Water Date Sampled:

Date Extracted:

Date Analyzed: 12/13/2005 ACL Sample #: Blank Units: mg/L Analyst: SW/JR Analvte Result PQL Antimony BOl 0.006 Arsenic BOl 0.010 Barium BOl 0.020 Beryllium BOl 0.004 Cadmium BOl 0.005 Chromium BOl 0.020 Cobalt BOl 0.050 Copper Sal 0.020 lead Sal 0.010 Mercury BOl 0.0005 Nickel Sal 0.020 Selenium BOl 0.040 Silver BOl 0.010 Thallium BOl 0.002 Tin BOl 0.025 Vanadium Sal 0.050 Zinc BOl 0.020 Page 68 of 71

ADVANCED CHEMISTRY LABS, INC.

Appendix II Metals (6010B/7470Al7841n041)

Water Matrix Spike/Spike Duplicate Recoveries Instrument: TJA 61E Trace ICAP Date Digested : 12-12-05 Date Analyzed : 12-13-05 ACL Sample No.: LCS/LCSD 121205 SPIKE SAMPLE MS MS MSD MSD Added Result Cone. Rec. Cone. Rec. .QC Limits ANALYTE (mg/L) (mg/L) (mg/L) (%) (mglL) (%) RPD RPD 0/0 Recovery Antimony (7041) 0.040 0.000 0.035 89 0.036 89 0 20 70 i 130 Arsenic 0.200 0.000 0.195 97 0.195 97 0 20 75 i 125 Barium 1.000 0.000 0.992 99 0.978 98 1 20 75 i 125 Beryllium 0.200 0.000 0.204 102 0.201 101 1 20 75 125 Cadmium 0.050 0.000 0.051 102 0.051 101 1 20 75 125 Chromium 0.200 0.000 0.206 103 0.204 102 1 .. 20 .. 75 . 125 Cobalt 0.200 0.000 0.206 103 0.203 102 1 20 75 1 125 Copper 0.200 0.000 0.205 102 0.201 101 2 20 75 i 125 Lead 0.200 0.000 0.207 104 0.205 102 1 20 75 I 125 Mercury (7470A) 0.0020 0.0000 0.0021 106 0.0022 109 3 20 70 130 Nickel 0.200 0.000 0.205 103 . __ 0203 .. 101 1 **20 75 *1125 Selenium 0.050 0.000 0.050 100 0.048 97 4 20 75 I 125 Silver 0.020 0.000 0.023 113 0.022 111 1 20 75 ! 125 Tin 2.000 0.000 2.039 102 2.019 101 1 20 75 I. 125 Thallium (7841) 0.040 0.000 0.044 110 0.044 110 0 20 70 130 Vanadium 0.500 0.000 0.511 102 0.506 101 1 20 75 I 125 Zinc *0.200*** 0.000* 0.212- 106 0.210 105 1. 20 75 125

.. Outside QC Limits Comment:

Page 69 of 71

IACt I AI2VANCEQ. CHEMISTRY LABS. :t.e-/or~

3039 Amwiler Road, Suite 100

• Atlanta, GA 30360

• P. O. Box 88610

• Atlanta, GA 30356. (770) 409-1444

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ApPENDIX C - STATISTICAL ANALYSES Concentrations (mg/L)

Parameter: Barium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 59 Total Non-Detect: 36 Percent Non-Detects: 61.0169%

Total Background Samples: 10 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1510 10 (100%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 - ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 There are 7 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 10 7 (70%) 7/3012002 - ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 0.015 0.015 6/24/2003 0.036 0.036 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005 - 0.023 0.023 GWB-6/MW-6 10 10 (100%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 GWC-13/MW-1310 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 Page 1

12/28/2004 0.043 0.043 6/13/2005 - 0.03 0.03 1216/2005 0.044 0.044 GWC-14/MW-146 0(0%) 7/30/2002 0.068 0.068 9/24/2002 - 0.0935 0.0935 10/21/2002 0.064 0.064 12/3/2002 0.106 0.106 6/24/2003 0.051 0.051 12/17/2003 0.189 0.189 GWC-5/MW-5 10 6 (60%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 0.02 0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 0.018 0.018 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.142 0.142 6/15/2004 0.04 0.04 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 GWC-17/MW-172 2 (100%) 6/15/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.01 ND<0.02 There is 1 unused well Well Samples NO Date Result Original EO-Blank 6 6 (100%) 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/15/2005 - ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 Page 2

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

Non-Detects Replaced with 1/2 DL Total Sample Size = 59 i x(i) m(i) sum(mI\2) sum(mx) o 0 o o o 1 0.005 -2.14441 4.59848 -0.010722 2 0.005 -1.83843 7.97829 -0.0199142 3 0.01 -1.64485 10.6838 -0.0363627 4 0.01 -1.50626 12.9526 -0.0514253 5 0.01 -1.38517 14.8713 -0.065277 6 0.01 -1.28155 16.5137 -0.0780925 7 0.01 -1.19522 17.9423 -0.0900447 8 0.01 -1.11232 19.1795 -0.101168 9 0.01 -1.03643 20.2537 -0.111532 10 0.01 -0.970094 21.1948 -0.121233 11 0.01 -0.903992 22.012 -0.130273 12 0.01 -0.841621 22.7203 -0.138689 13 0.01 -0.785774 23.3378 -0.146547 14 0.01 -0.729003 23.8692 -0.153837 15 0.01 -0.67449 24.3242 -0.160582 16 0.01 -0.624956 24.7147 -0.166832 17 0.01 -0.573953 25.0442 -0.172571 18 0.01 -0.524401 25.3191 -0.177815 19 0.01 -0.478914 25.5485 -0.182604 20 0.01 -0.431644 25.7348 -0.186921 21 0.01 -0.385321 25.8833 -0.190774 22 0.01 -0.342466 26.0006 -0.194199 23 0.01 -0.297612 26.0892 -0.197175 24 0.01 -0.253347 26.1533 -0.199708 25 0.01 -0.212137 26.1983 -0.20183 26 0.01 -0.168741 26.2268 -0.203517 27 0.01 -0.125661 26.2426 -0.204774 28 0.01 -0.0853288 26.2499 -0.205627 29 0.01 -0.0426257 26.2517 -0.206053 30 0.01 o 26.2517 -0.206053 31 0.01 0.0426257 26.2535 -0.205627 32 0.01 0.0853288 26.2608 -0.204774 33 0.01 0.125661 26.2766 -0.203517 34 0.01 0.168741 26.3051 -0.20183 35 0.01 0.212137 26.3501 -0.199708 36 0.01 0.253347 26.4142 -0.197175 37 0.015 0.297612 26.5028 -0.192711 38 0.018 0.342466 26.6201 -0.186546 39 0.02 0.385321 26.7686 -0.17884 40 0.023 0.431644 26.9549 -0.168912 41 0.0295 0.478914 27.1843 -0.154784 42 0.03 0.524401 27.4592 -0.139052 43 0.0325 0.573953 27.7887 -0.120398 44 0.034 0.624956 28.1792 -0.0991499 45 0.036 0.67449 28.6342 -0.0748683 46 0.04 0.729003 29.1656 -0.0457082 Page 1

47 0.043 0.785774 29.7831 -0.0119199 48 0.044 0.841621 30.4914 0.0251115 49 0.051 0.903992 31.3086 0.0712151 50 0.064 0.970094 32.2497 0.133301 51 0.068 1.03643 33.3239 0.203779 52 0.077 1.11232 34.5611 0.289427 53 0.082 1.19522 35.9897 0.387435 54 0.083 1.28155 37.6321 0.493804 55 0.085 1.38517 39.5508 0.611544 56 0.0935 1.50626 41.8196 0.752379 57 0.106 1.64485 44.5251 0.926733 58 0.142 1.83843 47.9049 1.18779 Sample Standard Deviation =0.0365091 Numerator = 1.41084 Denominator = 3.70349 = 58 47.9049 W Statistic = 0.38095 5% Critical value of 0962 exceeds 038095 Evidence of non* normality at 95'/0 level of significance 1% Critical value of 0.945 exceeds 0.38095 Evidence of non normality at 99'/0 level nf significance Page 2

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-1 5/MW-15 7/30/2002 ND<0.01 18.5 9/24/2002 ND<0.01 18.5 10/21/2002 - ND<0.01 18.5 12/3/2002 ND<0.005 18.5 6/24/2003 ND<0.01 18.5 12/17/2003 ND<0.01 18.5 6/15/2004 ND<0.01 18.5 12/28/2004 ND<0.01 18.5 6/14/2005 ND<0.01 18.5 12/5/2005 ND<0.01 18.5 Rank Sum = 185 Rank Mean = 18.5 Background Rank Sum = 185 Background Rank Mean = 18.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - ND<0.01 18.5 9/24/2002 ND<0.01 18.5 10/21/2002 ND<0.01 18.5 12/3/2002 0.015 37 6/24/2003 0.036 45 12/17/2003 ND<0.01 18.5 6/15/2004 ND<0.01 18.5 12/28/2004 - ND<0.01 18.5 6/14/2005 ND<0.01 18.5 12/6/2005 - 0.023 40 Rank Sum = 251.5 Rank Mean = 25.15 GWB-6/MW-6 7/30/2002 ND<0.01 18.5 9/24/2002 ND<0.01 18.5 10/21/2002 ND<0.01 18.5 12/3/2002 ND<0.005 18.5 6/24/2003 ND<0.01 18.5 12/17/2003 ND<0.01 18.5 6/15/2004 ND<0.01 18.5 12/28/2004 ND<0.01 18.5 6/13/2005 ND<0.01 18.5 12/5/2005 ND<0.01 18.5 Rank Sum = 185 Rank Mean = 18.5 Page 1

GWC-13/MW-137/30/2002 0.077 52 9/24/2002 0.085 55 10/21/2002 0.083 54 12/312002 0.082 53 6/24/2003 - 0.0295 41 12/17/2003 - 0.0325 43 6/15/2004 - 0.034 44 12/28/2004 0.043 47 6/13/2005 - 0.03 42 12/6/2005 0.044 48 Rank Sum = 479 Rank Mean = 47.9 GWC-14/MW-147/30/2002 0.068 51 9/24/2002 - 0.0935 56 10/21/2002 0.064 50 12/3/2002 0.106 57 6/24/2003 0.051 49 12/17/2003 0.189 59 Rank Sum = 322 Rank Mean = 53.6667 GWC-5/MW-5 7/30/2002 ND<0.01 18.5 9/24/2002 0.02 39 10/21/2002 ND<0.01 18.5 12/3/2002 0.018 38 6/24/2003 ND<0.01 18.5 12/17/2003 0.142 58 6/15/2004 0.04 46 12/28/2004 ND<0.01 18.5 6/13/2005 ND<0.01 18.5 12/6/2005 ND<0.01 18.5 Rank Sum = 292 Rank Mean = 29.2 GWC-17/MW-176/15/2005 ND<0.01 18.5 12/6/2005 ND<0.01 18.5 Rank Sum = 37 Rank Mean = 18.5 GWC-18/MW-186/15/2005 ND<0.01 18.5 Rank Sum = 18.5 Rank Mean = 18.5 Calculation Results:

Kruskal-Wallis H Statistic = 33.3835 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 43.1903 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 33.3835> 140671 inciicating a significant group difference at 5'Yo si~JnifiGance level 431903> 14 ()671 indicating a significant group difference at 5"10 significance level 'when adIlJst(,d for tios Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 18.5 Well Mean Rank Dif from Bkg Critical Value Page 2

GWA-7!MW-7 25.15 6.65 17869 GWB-6/MW-6 18.5 o 17869 GWC-13!MW-1347D 294 17869 GWC-14/MW 1453 6667 351667 20.6333 GWC-5/MW-5 29.2 107 17869 GWC-17/MW-1718.5 o 30.95 GWC-18!MW-18185 o 41.9065 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 18.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7!MW-7 25.15 6.65 18.8747 GWB-6/MW-6 18.5 o 188747 GWC-13!MW-1347D 294 188747 GWC14/MW*1453.6667 351667 217946 GWC-5!MW-5 29.2 107 18.8747 GWC-17/MW-1718.5 o 326919 GWC-18/MW-1818.5 o 44.265 Page 3

Concentrations (mg/L)

Parameter: Zinc Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 59 Total Non-Detect: 43 Percent Non-Detects: 72.8814%

Total Background Samples: 10 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1510 8 (80%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 - ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 0.029 0.029 12/5/2005 0.042 0.042 There are 7 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 10 7 (70%) 7/3012002 - ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 0.034 0.034 12/17/2003 0.023 0.023 6/1512004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005 - 0.1425 0.1425 GWB-6/MW-6 10 9 (90%) 7/3012002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 1213/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 0.02 0.02 GWC-13/MW-1310 4 (40%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 0.023 0.023 10/21/2002 0.027 0.027 12/312002 0.027 0.027 6/24/2003 - ND<0.01 ND<0.02 12/17/2003 - ND<0.01 ND<O.02 6/15/2004 - ND<0.01 ND<0.02 Page 1

12/28/2004 0.044 0.044 6/13/2005 - 0.02 0.02 12/6/2005 0.194 0.194 GWC-14/MW-146 5 (83.3333%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 - ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.127 0.127 GWC-5/MW-5 10 8 (80%) 7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10121/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/1712003 0.032 0.032 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/6/2005 0.055 0.055 GWC-17/MW-172 1 (50%) 6/15/2005 ND<0.01 ND<0.02 12/6/2005 0.096 0.096 GWC-18/MW-181 1 (100%) 6/15/2005 ND<0.01 ND<0.02 There is 1 unused well Well Samples NO Date Result Original EO-Blank 6 6 (100%) 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 - ND<0.01 ND<0.02 6/15/2005 - ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 Page 2

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

Non-Detects Replaced with 1/2 DL Total Sample Size = 59 i x(i) m(i) sum(mI\2) sum(mx) o 0 o o o 1 0.01 -2.14441 4.59848 -0.0214441 2 0.01 -1.83843 7.97829 -0.0398283 3 0.01 -1.64485 10.6838 -0.0562768 4 0.01 -1.50626 12.9526 -0.0713394 5 0.01 -1.38517 14.8713 -0.0851912 6 0.01 -1.28155 16.5137 -0.0980067 7 0.01 -1.19522 17.9423 -0.109959 8 0.01 -1.11232 19.1795 -0.121082 9 0.01 -1.03643 20.2537 -0.131446 10 0.01 -0.970094 21.1948 -0.141147 11 0.01 -0.903992 22.012 -0.150187 12 0.01 -0.841621 22.7203 -0.158604 13 0.01 -0.785774 23.3378 -0.166461 14 0.01 -0.729003 23.8692 -0.173751 15 0.01 -0.67449 24.3242 -0.180496 16 0.01 -0.624956 24.7147 -0.186746 17 0.01 -0.573953 25.0442 -0.192485 18 0.01 -0.524401 25.3191 -0.197729 19 0.01 -0.478914 25.5485 -0.202518 20 0.01 -0.431644 25.7348 -0.206835 21 0.01 -0.385321 25.8833 -0.210688 22 0.01 -0.342466 26.0006 -0.214113 23 0.01 -0.297612 26.0892 -0.217089 24 0.01 -0.253347 26.1533 -0.219622 25 0.01 -0.212137 26.1983 -0.221744 26 0.01 -0.168741 26.2268 -0.223431 27 0.01 -0.125661 26.2426 -0.224688 28 0.01 -0.0853288 26.2499 -0.225541 29 0.01 -0.0426257 26.2517 -0.225967 30 0.01 o 26.2517 -0.225967 31 0.01 0.0426257 26.2535 -0.225541 32 0.01 0.0853288 26.2608 -0.224688 33 0.01 0.125661 26.2766 -0.223431 34 0.01 0.168741 26.3051 -0.221744 35 0.01 0.212137 26.3501 -0.219622 36 0.01 0.253347 26.4142 -0.217089 37 0.01 0.297612 26.5028 -0.214113 38 0.01 0.342466 26.6201 -0.210688 39 0.01 0.385321 26.7686 -0.206835 40 0.01 0.431644 26.9549 -0.202518 41 0.01 0.478914 27.1843 -0.197729 42 0.01 0.524401 27.4592 -0.192485 43 0.01 0.573953 27.7887 -0.186746 44 0.02 0.624956 28.1792 -0.174247 45 0.02 0.67449 28.6342 -0.160757 46 0.023 0.729003 29.1656 -0.14399 Page 1

47 0.023 0.785774 29.7831 -0.125917 48 0.027 0.841621 30.4914 -0.103193 49 0.027 0.903992 31.3086 -0.0787854 50 0.029 0.970094 32.2497 -0.0506526 51 0.032 1.03643 33.3239 -0.0174868 52 0.034 1.11232 34.5611 0.0203321 53 0.042 1.19522 35.9897 0.0705314 54 0.044 1.28155 37.6321 0.12692 55 0.055 1.38517 39.5508 0.203104 56 0.096 1.50626 41.8196 0.347705 57 0.127 1.64485 44.5251 0.556601 58 0.1425 1.83843 47.9049 0.818577 Sample Standard Deviation = 0.0345029 Numerator = 0.670068

Denominator 3.30764 5847.9049 W Statistic = 0.202582 5% Critical value of 0.962 exceeds 0202582 Evidence of non normality at 95';,(, level of Si;jllific:arv~e 1% Critical value of 0.945 exceeds 0.202582 Evidence of non-normality at 99°/" level of significance Page 2

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

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.01 22 9/24/2002 ND<0.01 22 10/21/2002 - ND<0.01 22 12/3/2002 ND<0.01 22 6/24/2003 ND<0.01 22 12/17/2003 ND<0.01 22 6/15/2004 ND<0.01 22 12128/2004 ND<0.01 22 6/14/2005 0.029 50 12/5/2005 0.042 53 Rank Sum::: 279 Rank Mean::: 27.9 Background Rank Sum::: 279 Background Rank Mean::: 27.9 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - ND<0.01 22 9/24/2002 ND<0.01 22 10/21/2002 ND<0.01 22 12/3/2002 ND<0.01 22 6/24/2003 0.034 52 12/17/2003 0.023 46 6/15/2004 ND<0.01 22 12/28/2004 - ND<0.01 22 6/14/2005 ND<0.01 22 12/6/2005 - 0.1425 58 Rank Sum::: 310 Rank Mean::: 31 GWB-6/MW-6 7/30/2002 ND<0.01 22 9/24/2002 ND<0.01 22 10/21/2002 ND<0.01 22 12/3/2002 ND<0.01 22 6/24/2003 ND<0.01 22 12/17/2003 ND<0.01 22 6/15/2004 ND<0.01 22 12/28/2004 ND<0.01 22 6/13/2005 ND<0.01 22 12/5/2005 0.02 44 Rank Sum::: 242 Rank Mean::: 24.2 Page 1

GWC-13/MW-137/30/2002 ND<0.01 22 9/24/2002 0.023 47 10/21/2002 0.027 48 12/312002 0.027 49 6/24/2003 - ND<0.01 22 12/17/2003 - ND<0.01 22 6/15/2004 - ND<0.01 22 12/28/2004 0.044 54 6/1312005 - 0.02 45 12/6/2005 0.194 59

=

Rank Sum 390 Rank Mean 39=

GWC-14/MW-147/30/2002 ND<0.01 22 9/24/2002 - ND<0.01 22 10/21/2002 ND<0.01 22 12/3/2002 ND<0.01 22 6/24/2003 ND<0.01 22 12/17/2003 0.127 57

=

Rank Sum 167

=

Rank Mean 27.8333 GWC-5/MW-5 7/30/2002 ND<0.01 22 9/24/2002 ND<0.01 22 10/21/2002 ND<0.01 22 12/3/2002 ND<0.01 22 6/24/2003 ND<0.01 22 12/17/2003 0.032 51 6/1512004 ND<0.01 22 12/28/2004 ND<0.01 22 6/13/2005 ND<0.01 22 12/6/2005 0.055 55

=

Rank Sum 282

=

Rank Mean 28.2 GWC-17/MW-176/15/2005 ND<0.01 22 12/6/2005 0.096 56

=

Rank Sum 78 Rank Mean 39=

GWC-18/MW-186/15/2005 ND<0.01 22

=

Rank Sum 22 Rank Mean 22=

Calculation Results:

Kruskal-Wallis H Statistic = 5.0409 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 8.22367 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 5.0409 < 14.0671 indicating no significant group difference at 5% significance level 8.22367 < 14.0671 indicating no significant group difference at 5% significance level when adjusted for ties Page 2

Concentrations (J.lg/L)

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

Non-Detects Replaced with 1/2 DL Total Samples: 59 Total Non-Detect: 44 Percent Non-Detects: 74.5763%

Total Background Samples: 10 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1510 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 There are 7 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 10 10 (100%) 7/30/2002 - ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005 - ND<2.5 ND<5 GWB-6/MW-6 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 GWC-13/MW-1310 1 (10%) 7/30/2002 ND<2.5 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 Page 1

12/28/2004 16 16 6/13/2005 - 15 15 12/6/2005 18 18 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 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-17/MW-172 2 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 There are 2 unused wells Well Samples NO Date Result Original EO-Blank 6 6 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 Trip Blank 3 3 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 Page 2

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

Non-Detects Replaced with 1/2 DL Total Sample Size = 59 i x(i) m(i) sum(mJ\2) sum(mx) o 0 o o o 1 2.5 -2.14441 4.59848 -5.36102 2 2.5 -1.83843 7.97829 -9.95708 3 2.5 -1.64485 10.6838 -14.0692 4 2.5 -1.50626 12.9526 -17.8349 5 2.5 -1.38517 14.8713 -21.2978 6 2.5 -1.28155 16.5137 -24.5017 7 2.5 -1.19522 17.9423 -27.4897 8 2.5 -1.11232 19.1795 -30.2705 9 2.5 -1.03643 20.2537 -32.8616 10 2.5 -0.970094 21.1948 -35.2868 11 2.5 -0.903992 22.012 -37.5468 12 2.5 -0.841621 22.7203 -39.6509 13 2.5 -0.785774 23.3378 -41.6153 14 2.5 -0.729003 23.8692 -43.4378 15 2.5 -0.67449 24.3242 -45.124 16 2.5 -0.624956 24.7147 -46.6864 17 2.5 -0.573953 25.0442 -48.1213 18 2.5 -0.524401 25.3191 -49.4323 19 2.5 -0.478914 25.5485 -50.6296 20 2.5 -0.431644 25.7348 -51.7087 21 2.5 -0.385321 25.8833 -52.672 22 2.5 -0.342466 26.0006 -53.5282 23 2.5 -0.297612 26.0892 -54.2722 24 2.5 -0.253347 26.1533 -54.9056 25 2.5 -0.212137 26.1983 -55.4359 26 2.5 -0.168741 26.2268 -55.8578 27 2.5 -0.125661 26.2426 -56.1719 28 2.5 -0.0853288 26.2499 -56.3852 29 2.5 -0.0426257 26.2517 -56.4918 30 2.5 o 26.2517 -56.4918 31 2.5 0.0426257 26.2535 -56.3852 32 2.5 0.0853288 26.2608 -56.1719 33 2.5 0.125661 26.2766 -55.8578 34 2.5 0.168741 26.3051 -55.4359 35 2.5 0.212137 26.3501 -54.9056 36 2.5 0.253347 26.4142 -54.2722 37 2.5 0.297612 26.5028 -53.5282 38 2.5 0.342466 26.6201 -52.672 39 2.5 0.385321 26.7686 -51.7087 40 2.5 0.431644 26.9549 -50.6296 41 2.5 0.478914 27.1843 -49.4323 42 2.5 0.524401 27.4592 -48.1213 43 2.5 0.573953 27.7887 -46.6864 44 2.5 0.624956 28.1792 -45.124 45 6 0.67449 28.6342 -41.0771 46 6 0.729003 29.1656 -36.7031 Page 1

47 7 0.785774 29.7831 -31.2027 48 9 0.841621 30.4914 -23.6281 49 10 0.903992 31.3086 -14.5882 50 10 0.970094 32.2497 -4.88721 51 13 1.03643 33.3239 8.58642 52 15 1.11232 34.5611 25.2712 53 16 1.19522 35.9897 44.3948 54 16 1.28155 37.6321 64.8996 55 17 1.38517 39.5508 88.4475 56 18 1.50626 41.8196 115.56 57 18 1.64485 44.5251 145.168 58 20.5 1.83843 47.9049 182.855 Sample Standard Deviation =5.45524 Numerator = 33436 Denominator =82686.7 = 5847.9049 W Statistic = 0.40437 5'/(., Critical value of 0.962 exceeds 0.40437 Evidence of non normality at 95% level of significance 1'Yo Critical value of 0945 exceeds 040437 Evidence of nonnonnality at 99% level 01 significance Page 2

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

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<2.5 22.5 9/24/2002 ND<2.5 22.5 10/21/2002 - ND<2.5 22.5 12/312002 ND<2.5 22.5 6124/2003 ND<2.5 22.5 12/17/2003 ND<2.5 22.5 611512004 ND<2.5 22.5 12/28/2004 ND<2.5 22.5 611412005 ND<2.5 22.5 12/5/2005 ND<2.5 22.5 Rank Sum::: 225 Rank Mean::: 22.5 Background Rank Sum::: 225 Background Rank Mean::: 22.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002- ND<2.5 22.5 9/24/2002 ND<2.5 22.5 10/21/2002 ND<2.5 22.5 12/312002 ND<2.5 22.5 6124/2003 ND<2.5 22.5 12/17/2003 ND<2.5 22.5 611512004 ND<2.5 22.5 12/28/2004 - ND<2.5 22.5 611412005 ND<2.5 22.5 12/6/2005 - ND<2.5 22.5 Rank Sum::: 225 Rank Mean::: 22.5 GWB-6/MW-6 7/3012002 ND<2.5 22.5 9/24/2002 ND<2.5 22.5 10/21/2002 ND<2.5 22.5 12/312002 ND<2.5 22.5 6124/2003 ND<2.5 22.5 12/17/2003 ND<2.5 22.5 6115/2004 ND<2.5 22.5 12/28/2004 ND<2.5 22.5 611312005 ND<2.5 22.5 12/5/2005 ND<2.5 22.5 Rank Sum::: 225 Rank Mean::: 22.5 Page 1

GWC-13/MW-137/30/2002 ND<2.5 22.5 9/24/2002 6 45 10/21/2002 6 46 12/3/2002 7 47 6/24/2003 - 9 48 12/17/2003 - 20.5 58 6/15/2004 - 18 56 12/28/2004 16 53 6/13/2005 - 15 52 12/6/2005 18 57

=

Rank Sum 484.5

=

Rank Mean 48.45 GWC-14/MW-147/30/2002 13 51 9/24/2002 - 21 59 10/21/2002 17 55 12/3/2002 16 54 6/24/2003 10 49 12/17/2003 10 50

=

Rank Sum 318

=

Rank Mean 53 GWC-5/MW-5 7/30/2002 ND<2.5 22.5 9/24/2002 ND<2.5 22.5 10/21/2002 ND<2.5 22.5 12/3/2002 ND<2.5 22.5 6/24/2003 ND<2.5 22.5 12/17/2003 ND<2.5 22.5 6/15/2004 ND<2.5 22.5 12/28/2004 ND<2.5 22.5 6/13/2005 ND<2.5 22.5 12/6/2005 ND<2.5 22.5

=

Rank Sum 225

=

Rank Mean 22.5 GWC-17/MW-176/15/2005 ND<2.5 22.5 12/6/2005 ND<2.5 22.5

=

Rank Sum 45

=

Rank Mean 22.5 GWC-18/MW-186/15/2005 ND<2.5 22.5

=

Rank Sum 22.5

=

Rank Mean 22.5 Calculation Results:

Kruskal-Wallis H Statistic = 30.4975 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 52.1031 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 304975> 140671 inciicatinfj a siqniflcant qroup difference at 5'Y" sigl,ific;an(~e levE;!

52 1031 > 14.0671 indicatinq a significant group difference at 5'/" levcl whcn adjusted Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 22.5 Well Mean Rank Dif from Bkg Critical Value Page 2

GWA-7/MW-7 22.5 o 17.869 GWB-6/MW-6 225 o 17.869 GWC-13!MW-134845 2595 17869 GWC-14iMW1453 305 206333 GWC-5!MW-S 22.5 o 17869 GWC-17!MW-1722.5 o 3095 GWC-18!MW-18225 o 41.9065 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 22.5 Well Mean Rank Diffrom Bkg Critical Value GWA-7!MW-7 22.5 o 18.8747 GWB6iMW*6 22.5 o 188747 GWC-13iMW-134845 2595 18.B747 GWC14iM\;\f*1453 305 217946 GWC-5!MW-S 22.5 o 18.8747 GWC-17!MW-1722.5 o 32.6919 GWC-18!MW-18225 o 44.265 Page 3

Concentrations (J,lg/L)

Parameter: Chlorobenzene Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 59 Total Non-Detect: 53 Percent Non-Detects: 89.8305%

Total Background Samples: 10 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1510 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 There are 7 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 10 10 (100%) 7/30/2002 - ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005 - ND<2.5 ND<5 GWB-6/MW-6 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 GWC-13/MW-1310 9 (90%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 - ND<2.5 ND<5 12/17/2003 - ND<2.5 ND<5 6/15/2004 - ND<2.5 ND<5 Page 1

12/28/2004 ND<2.5 ND<5 6/13/2005 - ND<2.5 ND<5 12/6/2005 4 4 GWC-14/MW-146 1 (16.6667%) 7/30/2002 ND<2.5 ND<5 9/24/2002 - 8 8 10/21/2002 9 9 12/3/2002 10 10 6/24/2003 7 7 12/17/2003 19 19 GWC-5/MW-5 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-17/MW-172 2 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 There are 2 unused wells Well Samples NO Date Result Original EO-Blank 6 6 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 Trip Blank 3 3 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 Page 2

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

Non-Detects Replaced with 1/2 DL Total Sample Size = 59 i x(i) m(i) sum(mI\2) sum(mx) o 0 o o o 1 2.5 -2.14441 4.59848 -5.36102 2 2.5 -1.83843 7.97829 -9.95708 3 2.5 -1.64485 10.6838 -14.0692 4 2.5 -1.50626 12.9526 -17.8349 5 2.5 -1.38517 14.8713 -21.2978 6 2.5 -1.28155 16.5137 -24.5017 7 2.5 -1.19522 17.9423 -27.4897 8 2.5 -1.11232 19.1795 -30.2705 9 2.5 -1.03643 20.2537 -32.8616 10 2.5 -0.970094 21.1948 -35.2868 11 2.5 -0.903992 22.012 -37.5468 12 2.5 -0.841621 22.7203 -39.6509 13 2.5 -0.785774 23.3378 -41.6153 14 2.5 -0.729003 23.8692 -43.4378 15 2.5 -0.67449 24.3242 -45.124 16 2.5 -0.624956 24.7147 -46.6864 17 2.5 -0.573953 25.0442 -48.1213 18 2.5 -0.524401 25.3191 -49.4323 19 2.5 -0.478914 25.5485 -50.6296 20 2.5 -0.431644 25.7348 -51.7087 21 2.5 -0.385321 25.8833 -52.672 22 2.5 -0.342466 26.0006 -53.5282 23 2.5 -0.297612 26.0892 -54.2722 24 2.5 -0.253347 26.1533 -54.9056 25 2.5 -0.212137 26.1983 -55.4359 26 2.5 -0.168741 26.2268 -55.8578 27 2.5 -0.125661 26.2426 -56.1719 28 2.5 -0.0853288 26.2499 -56.3852 29 2.5 -0.0426257 26.2517 -56.4918 30 2.5 o 26.2517 -56.4918 31 2.5 0.0426257 26.2535 -56.3852 32 2.5 0.0853288 26.2608 -56.1719 33 2.5 0.125661 26.2766 -55.8578 34 2.5 0.168741 26.3051 -55.4359 35 2.5 0.212137 26.3501 -54.9056 36 2.5 0.253347 26.4142 -54.2722 37 2.5 0.297612 26.5028 -53.5282 38 2.5 0.342466 26.6201 -52.672 39 2.5 0.385321 26.7686 -51.7087 40 2.5 0.431644 26.9549 -50.6296 41 2.5 0.478914 27.1843 -49.4323 42 2.5 0.524401 27.4592 -48.1213 43 2.5 0.573953 27.7887 -46.6864 44 2.5 0.624956 28.1792 -45.124 45 2.5 0.67449 28.6342 -43.4378 46 2.5 0.729003 29.1656 -41.6153 Page 1

47 2.5 0.785774 29.7831 -39.6509 48 2.5 0.841621 30.4914 -37.5468 49 2.5 0.903992 31.3086 -35.2868 50 2.5 0.970094 32.2497 -32.8616 51 2.5 1.03643 33.3239 -30.2705 52 2.5 1.11232 34.5611 -27.4897 53 2.5 1.19522 35.9897 -24.5017 54 4 1.28155 37.6321 -19.3755 55 7 1.38517 39.5508 -9.67926 56 8 1.50626 41.8196 2.37082 57 9 1.64485 44.5251 17.1745 58 10 1.83843 47.9049 35.5587 Sample Standard Deviation =2.60504 Numerator = 1264.42 Denominator = 18855.5 =58 47.9049 W Statistic = 0.0670588 5'/0 Critical value of 0962 exceeds 00C7058i3 Evidence 01 non-normality at 95'% level of significance 1 Critical vallie of 0.945 exceeds 00670588 Evidence of non-normality at 99';() level of ",iCH,ifir'"r"",,,

Page 2

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

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<2.5 27 9/24/2002 ND<2.5 27 10/21/2002 - ND<2.5 27 12/3/2002 ND<2.5 27 6/24/2003 ND<2.5 27 12/17/2003 ND<2.5 27 6/15/2004 ND<2.5 27 12/28/2004 ND<2.5 27 6/14/2005 ND<2.5 27 12/5/2005 ND<2.5 27

=

Rank Sum 270 Rank Mean 27=

Background Rank Sum 270 =

Background Rank Mean 27 =

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002 - ND<2.5 27 9/24/2002 ND<2.5 27 10/21/2002 ND<2.5 27 12/3/2002 ND<2.5 27 6/24/2003 ND<2.5 27 12/17/2003 ND<2.5 27 6/15/2004 ND<2.5 27 12/28/2004 - ND<2.5 27 6/14/2005 ND<2.5 27 12/6/2005 - ND<2.5 27

=

Rank Sum 270 Rank Mean 27=

GWB-6/MW-6 7/3012002 ND<2.5 27 9/24/2002 ND<2.5 27 10/21/2002 ND<2.5 27 12/3/2002 ND<2.5 27 6/24/2003 ND<2.5 27 12/17/2003 ND<2.5 27 6/15/2004 ND<2.5 27 12/28/2004 ND<2.5 27 6/13/2005 ND<2.5 27 12/5/2005 ND<2.5 27

=

Rank Sum 270 Rank Mean 27=

Page 1

GWC-13/MW-137/30/2002 ND<2.5 27 9/24/2002 ND<2.5 27 10/21/2002 ND<2.5 27 12/3/2002 ND<2.5 27 6/24/2003 - ND<2.5 27 12/17/2003 - ND<2.5 27 6/15/2004 - ND<2.5 27 12/28/2004 ND<2.5 27 6/13/2005 - ND<2.5 27 12/6/2005 4 54 Rank Sum = 297 Rank Mean = 29.7 GWC-14/MW-147/30/2002 ND<2.5 27 9/24/2002 - 8 56 10/21/2002 9 57 12/3/2002 10 58 6/24/2003 7 55 12/17/2003 19 59 Rank Sum = 312 Rank Mean = 52 GWC-5/MW-5 7/30/2002 ND<2.5 27 9/24/2002 ND<2.5 27 10/21/2002 ND<2.5 27 12/3/2002 ND<2.5 27 6/24/2003 ND<2.5 27 12/17/2003 ND<2.5 27 6/15/2004 ND<2.5 27 12/28/2004 ND<2.5 27 6/13/2005 ND<2.5 27 12/6/2005 ND<2.5 27 Rank Sum = 270 Rank Mean = 27 GWC-17/MW-176/15/2005 ND<2.5 27 12/6/2005 ND<2.5 27 Rank Sum = 54 Rank Mean = 27 GWC-18/MW-186/15/2005 ND<2.5 27 Rank Sum = 27 Rank Mean = 27 Calculation Results:

Kruskal-Wallis H Statistic = 11.159 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 40.5544 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 11.159 < 14.0671 indicating no significant group difference at 5% significance level 405544> 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 27 Well Mean Rank Dif from Bkg Critical Value Page 2

GWA-7!MW-7 27 0 17869 GWB-6!MW-6 27 0 17.869 GWC-13!MW-1329.7 2.7 17.869 GWC-14!MW*1452 25 206333 GWC-S/MW-5 27 0 17.869 GWC-17/MW-1727 0 30.95 GWC-18!MW-1827 0 41.9065 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 27 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 27 o 188747 GWB-6!MW-6 27 o 18.8747 GWC-13!MW-1329.7 2.7 18.8747 GWC-14iMW-1452 25 21.7946 GWC-5/MW-5 27 o 18.8747 GWC*17/MW-1727 o 326919 GWC-18!MW-1827 o 44265 Page 3

Concentrations (lJg/L)

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

Non-Detects Replaced with 1/2 DL Total Samples: 59 Total Non-Detect: 47 Percent Non-Detects: 79.661 %

Total Background Samples: 10 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1510 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 There are 7 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 10 10 (100%) 7/30/2002 - ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005 - ND<2.5 ND<5 GWB-6/MW-6 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 GWC-13/MW-1310 4 (40%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 - 6 6 12117/2003 - 14 14 6/15/2004 - 9.5 9.5 Page 1

12/28/2004 8 8 611312005 - 8 8 12/6/2005 9 9 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 6124/2003 10 10 12/17/2003 17 17 GWC-5/MW-5 10 10(100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-17/MW-172 2 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 There are 2 unused wells Well Samples NO Date Result Original EO-Blank 6 6 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 Trip Blank 3 3 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 Page 2

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

Non-Detects Replaced with 1/2 DL Total Sample Size = 59 i x(i) m(i) sum(m"'2) sum(mx) o 0 o o o 1 2.5 -2.14441 4.59848 -5.36102 2 2.5 -1.83843 7.97829 -9.95708 3 2.5 -1.64485 10.6838 -14.0692 4 2.5 -1.50626 12.9526 -17.8349 5 2.5 -1.38517 14.8713 -21.2978 6 2.5 -1.28155 16.5137 -24.5017 7 2.5 -1.19522 17.9423 -27.4897 8 2.5 -1.11232 19.1795 -30.2705 9 2.5 -1.03643 20.2537 -32.8616 10 2.5 -0.970094 21.1948 -35.2868 11 2.5 -0.903992 22.012 -37.5468 12 2.5 -0.841621 22.7203 -39.6509 13 2.5 -0.785774 23.3378 -41.6153 14 2.5 -0.729003 23.8692 -43.4378 15 2.5 -0.67449 24.3242 -45.124 16 2.5 -0.624956 24.7147 -46.6864 17 2.5 -0.573953 25.0442 -48.1213 18 2.5 -0.524401 25.3191 -49.4323 19 2.5 -0.478914 25.5485 -50.6296 20 2.5 -0.431644 25.7348 -51.7087 21 2.5 -0.385321 25.8833 -52.672 22 2.5 -0.342466 26.0006 -53.5282 23 2.5 -0.297612 26.0892 -54.2722 24 2.5 -0.253347 26.1533 -54.9056 25 2.5 -0.212137 26.1983 -55.4359 26 2.5 -0.168741 26.2268 -55.8578 27 2.5 -0.125661 26.2426 -56.1719 28 2.5 -0.0853288 26.2499 -56.3852 29 2.5 -0.0426257 26.2517 -56.4918 30 2.5 o 26.2517 -56.4918 31 2.5 0.0426257 26.2535 -56.3852 32 2.5 0.0853288 26.2608 -56.1719 33 2.5 0.125661 26.2766 -55.8578 34 2.5 0.168741 26.3051 -55.4359 35 2.5 0.212137 26.3501 -54.9056 36 2.5 0.253347 26.4142 -54.2722 37 2.5 0.297612 26.5028 -53.5282 38 2.5 0.342466 26.6201 -52.672 39 2.5 0.385321 26.7686 -51.7087 40 2.5 0.431644 26.9549 -50.6296 41 2.5 0.478914 27.1843 -49.4323 42 2.5 0.524401 27.4592 -48.1213 43 2.5 0.573953 27.7887 -46.6864 44 2.5 0.624956 28.1792 -45.124 45 2.5 0.67449 28.6342 -43.4378 46 2.5 0.729003 29.1656 -41.6153 Page 1

47 2.5 0.785774 29.7831 -39.6509 48 6 0.841621 30.4914 -34.6011 49 8 0.903992 31.3086 -27.3692 50 8 0.970094 32.2497 -19.6085 51 9 1.03643 33.3239 -10.2806 52 9.5 1.11232 34.5611 0.286491 53 10 1.19522 35.9897 12.2387 54 10 1.28155 37.6321 25.0542 55 14 1.38517 39.5508 44.4466 56 16 1.50626 41.8196 68.5468 57 17 1.64485 44.5251 96.5093 58 18.5 1.83843 47.9049 130.52 Sample Standard Deviation = 4.36551 Numerator = 17035.5 Denominator =52951.6 =5847.9049 W Statistic = 0.321719 50" Critical value of 0962 exceeds 0321719 Evidence of non**normality at 95% level of significance 1% Critical value of 0 945 exceeds 0321719 Evidence of non-normality at 99% level of significance Page 2

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

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelilD Date Result Rank GWA-15/MW-157/30/2002 ND<2.5 24 9/24/2002 ND<2.5 24 10/21/2002 - ND<2.5 24 12/3/2002 ND<2.5 24 6/24/2003 ND<2.5 24 12117/2003 ND<2.5 24 6/15/2004 ND<2.5 24 12/28/2004 ND<2.5 24 6/14/2005 ND<2.5 24 12/5/2005 ND<2.5 24 Rank Sum = 240 Rank Mean = 24 Background Rank Sum = 240 Background Rank Mean = 24 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - ND<2.5 24 9/24/2002 ND<2.5 24 10/21/2002 ND<2.5 24 12/3/2002 ND<2.5 24 6/24/2003 ND<2.5 24 12/17/2003 ND<2.5 24 6/15/2004 ND<2.5 24 12/28/2004 - ND<2.5 24 6/14/2005 ND<2.5 24 12/6/2005 - ND<2.5 24 Rank Sum = 240 Rank Mean = 24 GWB-6/MW-6 7/30/2002 ND<2.5 24 9/24/2002 ND<2.5 24 10/21/2002 ND<2.5 24 12/3/2002 ND<2.5 24 6/24/2003 ND<2.5 24 12/17/2003 ND<2.5 24 6/15/2004 ND<2.5 24 12/28/2004 ND<2.5 24 6/13/2005 ND<2.5 24 12/5/2005 ND<2.5 24 Rank Sum = 240 Rank Mean = 24 Page 1

GWC-13/MW-137/30/2002 ND<2.5 24 9/24/2002 ND<2.5 24 10/21/2002 ND<2.5 24 12/3/2002 ND<2.5 24 6/24/2003 - 6 48 12/17/2003 - 14 55 6/15/2004 - 9.5 52 12/28/2004 8 49 6/13/2005 - 8 50 12/6/2005 9 51 Rank Sum = 401 Rank Mean = 40.1 GWC-14/MW-147/30/2002 10 53 9/24/2002 - 18.5 58 10/21/2002 16 56 12/3/2002 19 59 6/24/2003 10 54 12/17/2003 17 57 Rank Sum = 337 Rank Mean = 56.1667 GWC-5/MW-5 7/30/2002 ND<2.5 24 9/24/2002 ND<2.5 24 10/21/2002 ND<2.5 24 12/3/2002 ND<2.5 24 6/24/2003 ND<2.5 24 12/17/2003 ND<2.5 24 6/15/2004 ND<2.5 24 12/28/2004 ND<2.5 24 6/13/2005 ND<2.5 24 12/6/2005 ND<2.5 24 Rank Sum = 240 Rank Mean = 24 GWC-17/MW-176/15/2005 ND<2.5 24 1216/2005 ND<2.5 24 Rank Sum =48 Rank Mean = 24 GWC-18/MW-186/15/2005 ND<2.5 24 Rank Sum = 24 Rank Mean = 24 Calculation Results:

Kruskal-Wallis H Statistic = 22.6314 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 45.7603 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 22.6314'" 14.0671 inclicating a significant group difference at 5'Jo significance level 457603> 14.Gb!! indicating a significant group difference at 5'/0 significance level when adjlJsti:d for tics Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 24 Well Mean Rank Dif from Bkg Critical Value Page 2

GWA-7/MW-7 24 o 17869 GWB-6/MW-6 24 o 17.869 GWC-13/MW-1340 1 16.1 17.869 GWC*14!MW-14561667 321667 206333 GWC-5/MW-5 24 o 17869 GWC-17!MW-1724 o 309S GWC-18/MW-1824 o 41.9065 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 24 Well Mean Rank Diffrom Bkg Critical Value GWA-7/MW-7 24 o 18.8747 GWB-6iMW6 24 o 18.8747 GWC-13/MW-1340.1 161 188747 C;'vVC<<*-14/fvl'vV**1456,1667 321667 217946 GWC-5!MW-5 24 o 188747 GWC-17!MW-I724 o 326919 GI/VC-18/MW-1824 o 44265 Page 3

Concentrations (lJg/L)

Parameter: Trichlorofluoromethane Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 59 Total Non-Detect: 34 Percent Non-Detects: 57.6271%

Total Background Samples: 10 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1510 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 There are 7 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 10 0(0%) 7/30/2002 - 184.5 184.5 9/24/2002 32 32 10/21/2002 221 221 12/3/2002 210 210 6/24/2003 23 23 12/17/2003 34 34 6/15/2004 46 46 12/28/2004 - 144 144 6/14/2005 22 22 12/6/2005 - 86.5 86.5 GWB-6/MW-6 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 GWC-13/MW-1310 0(0%) 7/30/2002 300 300 9/24/2002 381 381 10/21/2002 348 348 12/3/2002 391 391 6/24/2003 - 44 44 12/17/2003 - 99.5 99.5 6/15/2004 - 127 127 Page 1

12/28/2004 81 81 611312005 - 45.3333 45.3333 12/6/2005 60 60 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<2.5 ND<5 GWC-5/MW-5 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-17/MW-172 2 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 There are 2 unused wells Well Samples NO Date Result Original EO-Blank 6 6 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 Trip Blank 3 3 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 Page 2

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

Non-Detects Replaced with 1/2 DL Total Sample Size = 59 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 2.5 -2.14441 4.59848 -5.36102 2 2.5 -1.83843 7.97829 -9.95708 3 2.5 -1.64485 10.6838 -14.0692 4 2.5 -1.50626 12.9526 -17.8349 5 2.5 -1.38517 14.8713 -21.2978 6 2.5 -1.28155 16.5137 -24.5017 7 2.5 -1.19522 17.9423 -27.4897 8 2.5 -1.11232 19.1795 -30.2705 9 2.5 -1.03643 20.2537 -32.8616 10 2.5 -0.970094 21.1948 -35.2868 11 2.5 -0.903992 22.012 -37.5468 12 2.5 -0.841621 22.7203 -39.6509 13 2.5 -0.785774 23.3378 -41.6153 14 2.5 -0.729003 23.8692 -43.4378 15 2.5 -0.67449 24.3242 -45.124 16 2.5 -0.624956 24.7147 -46.6864 17 2.5 -0.573953 25.0442 -48.1213 18 2.5 -0.524401 25.3191 -49.4323 19 2.5 -0.478914 25.5485 -50.6296 20 2.5 -0.431644 25.7348 -51.7087 21 2.5 -0.385321 25.8833 -52.672 22 2.5 -0.342466 26.0006 -53.5282 23 2.5 -0.297612 26.0892 -54.2722 24 2.5 -0.253347 26.1533 -54.9056 25 2.5 -0.212137 26.1983 -55.4359 26 2.5 -0.168741 26.2268 -55.8578 27 2.5 -0.125661 26.2426 -56.1719 28 2.5 -0.0853288 26.2499 -56.3852 29 2.5 -0.0426257 26.2517 -56.4918 30 2.5 o 26.2517 -56.4918 31 2.5 0.0426257 26.2535 -56.3852 32 2.5 0.0853288 26.2608 -56.1719 33 2.5 0.125661 26.2766 -55.8578 34 2.5 0.168741 26.3051 -55.4359 35 5 0.212137 26.3501 -54.3752 36 22 0.253347 26.4142 -48.8016 37 23 0.297612 26.5028 -41.9565 38 27 0.342466 26.6201 -32.71 39 31 0.385321 26.7686 -20.765 40 32 0.431644 26.9549 -6.95241 41 34 0.478914 27.1843 9.33066 42 43 0.524401 27.4592 31.8799 43 44 0.573953 27.7887 57.1338 44 45.3333 0.624956 28.1792 85.4651 45 46 0.67449 28.6342 116.492 46 47.5 0.729003 29.1656 151.119 Page 1

47 60 0.785774 29.7831 198.266 48 81 0.841621 30.4914 266.437 49 86.5 0.903992 31.3086 344.632 50 99.5 0.970094 32.2497 441.157 51 127 1.03643 33.3239 572.784 52 144 1.11232 34.5611 732.958 53 184.5 1.19522 35.9897 953.476 54 210 1.28155 37.6321 1222.6 55 221 1.38517 39.5508 1528.73 56 300 1.50626 41.8196 1980.6 57 348 1.64485 44.5251 2553.01 58 381 1.83843 47.9049 3253.45 Sample Standard Deviation = 97.4728 Numerator = 1.0584ge+007 Denominator =2.63982e+007 = 58 47.9049 W Statistic =0.400972 5°1., Critical value of 0.962 exceeds 0400972 Evidence of non-normality at 95%\ level of significance 1'Yo Critical value of 0945 exceeds 0400972 Evidence of non-normality at 99% level of "im,ifir';:Jn"'A Page 2

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

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<2.5 17.5 9/24/2002 ND<2.5 17.5 10/21/2002 - ND<2.5 17.5 12/3/2002 ND<2.5 17.5 6/24/2003 ND<2.5 17.5 12/17/2003 ND<2.5 17.5 6/15/2004 ND<2.5 17.5 12/28/2004 ND<2.5 17.5 6/14/2005 ND<2.5 17.5 12/5/2005 ND<2.5 17.5 Rank Sum = 175 Rank Mean = 17.5 Background Rank Sum = 175 Background Rank Mean = 17.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002 - 184.5 53 9/24/2002 32 40 10/21/2002 221 55 12/3/2002 210 54 6/24/2003 23 37 12/17/2003 34 41 6/15/2004 46 45 12/28/2004 - 144 52 6/14/2005 22 36 12/6/2005 - 86.5 49 Rank Sum =462

=

Rank Mean 46.2 GWB-6/MW-6 7/30/2002 ND<2.5 17.5 9/24/2002 ND<2.5 17.5 10/21/2002 ND<2.5 17.5 12/3/2002 ND<2.5 17.5 6/24/2003 ND<2.5 17.5 12/17/2003 ND<2.5 17.5 6/15/2004 ND<2.5 17.5 12/28/2004 ND<2.5 17.5 6113/2005 ND<2.5 17.5 12/5/2005 ND<2.5 17.5 Rank Sum = 175 Rank Mean = 17.5 Page 1

GWC-13/MW-137/30/2002 300 56 9/24/2002 381 58 10/21/2002 348 57 12/3/2002 391 59 6/24/2003 - 44 43 12/17/2003 - 99.5 50 6/15/2004 - 127 51 12/28/2004 81 48 6/13/2005 - 45.3333 44 12/6/2005 60 47 Rank Sum = 513 Rank Mean = 51.3 GWC-14/MW-147/30/2002 43 42 9/24/2002 - 47.5 46 10/21/2002 31 39 12/3/2002 27 38 6/24/2003 5 35 12/17/2003 ND<2.5 17.5 Rank Sum = 217.5 Rank Mean = 36.25 GWC-5/MW-5 7/30/2002 ND<2.5 17.5 9/24/2002 ND<2.5 17.5 10/21/2002 ND<2.5 17.5 12/3/2002 ND<2.5 17.5 6/24/2003 ND<2.5 17.5 12/17/2003 ND<2.5 17.5 6/15/2004 ND<2.5 17.5 12/28/2004 ND<2.5 17.5 6/13/2005 ND<2.5 17.5 12/6/2005 ND<2.5 17.5 Rank Sum = 175 Rank Mean = 17.5 GWC-17/MW-176/15/2005 ND<2.5 17.5 12/6/2005 ND<2.5 17.5 Rank Sum = 35 Rank Mean = 17.5 GWC-18/MW-186/15/2005 ND<2.5 17.5 Rank Sum = 17.5 Rank Mean = 17.5 Calculation Results:

Kruskal-Wallis H Statistic = 42.5489 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 52.6115 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 425489> 14.067, a significant group difference at 5'Y" sig;,ific:am:;e level 526115> 14.0671 a group difference at 5'% significance level vvhen adjusted for tics Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 17.5 Well Mean Rank Dif from Bkg Critical Value Page 2

GWA-7iMW-7 462 287 17869 (3WB-6!MW-6 17.5 o 17869 GWC-13iMW-1351.3 33.8 17869 GWC-14/MW-1436.25 18.75 206333 GWC-5/MW-5 175 o 17869 GWC-17/MW-1717.5 o 30.95 GWC-18/MW-1817.5 o 419065 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 17.5 Well Mean Rank Diffrom Bkg Critical Value GW,!;-7iMVV-! 462 28.7 188747 GWB-6/M\fIJ.6 175 o 18.8747 G\NC-13!~vlW-13513 33.8 188747 GWC*14IMW-143625 18.75 21.7946 GWC-5/MW-5 17.5 o 18.8747 GWC-17/MW-1717.5 o 32.6919 GWC-18/MW-1817.5 o 44.265 Page 3

Concentrations (~g/L)

Parameter: Vinyl chloride Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 59 Total Non-Detect: 55 Percent Non-Detects: 93.2203%

Total Background Samples: 10 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1510 10 (100%) 7/30/2002 ND<1 ND<2 9/24/2002 ND<1 ND<2 10/21/2002 - ND<1 ND<2 12/312002 ND<1 ND<2 6/24/2003 ND<1 ND<2 12/17/2003 ND<1 ND<2 6/1512004 ND<1 ND<2 12/28/2004 ND<1 ND<2 6/1412005 ND<1 ND<2 12/5/2005 ND<1 ND<2 There are 7 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 10 10 (100%) 7/30/2002 - ND<1 ND<2 9/24/2002 ND<1 ND<2 10/21/2002 ND<1 ND<2 12/312002 ND<1 ND<2 6/24/2003 ND<1 ND<2 12/17/2003 ND<1 ND<2 6/1512004 ND<1 ND<2 12/28/2004 - ND<1 ND<2 6/1412005 ND<1 ND<2 12/6/2005 - ND<1 ND<2 GWB-6/MW-6 10 10 (100%) 7/30/2002 ND<1 ND<2 9/24/2002 ND<1 ND<2 10/21/2002 ND<1 ND<2 12/312002 ND<1 ND<2 6/24/2003 ND<1 ND<2 12/17/2003 ND<1 ND<2 6/1512004 ND<1 ND<2 12/28/2004 ND<1 ND<2 6/1312005 ND<1 ND<2 12/5/2005 ND<1 ND<2 GWC-13/MW-1310 8(80%) 7/30/2002 ND<1 ND<2 9/24/2002 ND<1 ND<2 10/21/2002 ND<1 ND<2 12/312002 ND<1 ND<2 6/24/2003 - ND<1 ND<2 12/17/2003 - ND<1 ND<2 6/1512004 - 2 2 Page 1

12/28/2004 ND<1 ND<2 6/13/2005 - ND<1 ND<2 12/6/2005 1 1 GWC-14/MW-146 4 (66.6667%) 7/30/2002 ND<1 ND<2 9/24/2002 - 2.5 2.5 10/21/2002 ND<1 ND<2 12/3/2002 4 4 6/24/2003 ND<1 ND<2 12/17/2003 ND<1 ND<2 GWC-5/MW-5 10 10 (100%) 7/30/2002 ND<1 ND<2 9/24/2002 ND<1 ND<2 10/21/2002 ND<1 ND<2 12/3/2002 ND<1 ND<2 6/24/2003 ND<1 ND<2 12/17/2003 ND<1 ND<2 6/15/2004 ND<1 ND<2 12/28/2004 ND<1 ND<2 6/13/2005 ND<1 ND<2 12/6/2005 ND<1 ND<2 GWC-17/MW-172 2 (100%) 6/15/2005 ND<1 ND<2 12/6/2005 ND<1 ND<2 GWC-18/MW-181 1 (100%) 6/15/2005 ND<1 ND<2 There are 2 unused wells Well Samples NO Date Result Original EO-Blank 6 6 (100%) 6/24/2003 ND<1 ND<2 12/17/2003 ND<1 ND<2 6/15/2004 ND<1 ND<2 12/28/2004 - ND<1 ND<2 6/15/2005 - ND<1 ND<2 12/6/2005 ND<1 ND<2 Trip Blank 3 3 (100%) 12/17/2003 ND<1 ND<2 6/13/2005 ND<1 ND<2 12/5/2005 ND<1 ND<2 Page 2

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

Non-Detects Replaced with 1/2 DL Total Sample Size = 59 i x(i) m(i) sum(mI\2) sum(mx) o 0 o o o 1 1 -2.14441 4.59848 -2.14441 2 1 -1.83843 7.97829 -3.98283 3 1 -1.64485 10.6838 -5.62768 4 1 -1.50626 12.9526 -7.13394 5 1 -1.38517 14.8713 -8.51912 6 1 -1.28155 16.5137 -9.80067 7 1 -1.19522 17.9423 -10.9959 8 1 -1.11232 19.1795 -12.1082 9 1 -1.03643 20.2537 -13.1446 10 1 -0.970094 21.1948 -14.1147 11 1 -0.903992 22.012 -15.0187 12 1 -0.841621 22.7203 -15.8604 13 1 -0.785774 23.3378 -16.6461 14 1 -0.729003 23.8692 -17.3751 15 1 -0.67449 24.3242 -18.0496 16 1 -0.624956 24.7147 -18.6746 17 1 -0.573953 25.0442 -19.2485 18 1 -0.524401 25.3191 -19.7729 19 1 -0.478914 25.5485 -20.2518 20 1 -0.431644 25.7348 -20.6835 21 1 -0.385321 25.8833 -21.0688 22 1 -0.342466 26.0006 -21.4113 23 1 -0.297612 26.0892 -21.7089 24 1 -0.253347 26.1533 -21.9622 25 1 -0.212137 26.1983 -22.1744 26 1 -0.168741 26.2268 -22.3431 27 1 -0.125661 26.2426 -22.4688 28 1 -0.0853288 26.2499 -22.5541 29 1 -0.0426257 26.2517 -22.5967 30 1 o 26.2517 -22.5967 31 1 0.0426257 26.2535 -22.5541 32 1 0.0853288 26.2608 -22.4688 33 1 0.125661 26.2766 -22.3431 34 1 0.168741 26.3051 -22.1744 35 1 0.212137 26.3501 -21.9622 36 1 0.253347 26.4142 -21.7089 37 1 0.297612 26.5028 -21.4113 38 1 0.342466 26.6201 -21.0688 39 1 0.385321 26.7686 -20.6835 40 1 0.431644 26.9549 -20.2518 41 1 0.478914 27.1843 -19.7729 42 1 0.524401 27.4592 -19.2485 43 1 0.573953 27.7887 -18.6746 44 1 0.624956 28.1792 -18.0496 45 1 0.67449 28.6342 -17.3751 46 1 0.729003 29.1656 -16.6461 Page 1

47 1 0.785774 29.7831 -15.8604 48 1 0.841621 30.4914 -15.0187 49 1 0.903992 31.3086 -14.1147 50 1 0.970094 32.2497 -13.1446 51 1 1.03643 33.3239 -12.1082 52 1 1.11232 34.5611 -10.9959 53 1 1.19522 35.9897 -9.80067 54 1 1.28155 37.6321 -8.51912 55 1 1.38517 39.5508 -7.13394 56 1 1.50626 41.8196 -5.62768 57 2 1.64485 44.5251 -2.33798 58 2.5 1.83843 47.9049 2.25808 Sample Standard Deviation =0.449852 Numerator = 5.09894 Denominator =562.274 =5847.9049 W Statistic = 0.00906844 5% Critical value of 09132 exceeds 0009013844 Evidence of non norma lily at 95°;(, level of si£)nificance 1 Critical value of 0945 exceeds 000906844

[vidence of at 99% level of sigllifk:an,:::e Page 2

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

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<1 28 9/24/2002 ND<1 28 10/21/2002 - ND<1 28 12/312002 ND<1 28 6/24/2003 ND<1 28 12/17/2003 ND<1 28 6/1512004 ND<1 28 12/28/2004 ND<1 28 6/1412005 ND<1 28 12/5/2005 ND<1 28

=

Rank Sum 280 Rank Mean 28=

Background Rank Sum 280 =

Background Rank Mean 28 =

Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002 - ND<1 28 9/24/2002 ND<1 28 10/21/2002 ND<1 28 12/312002 ND<1 28 6/24/2003 ND<1 28 12/17/2003 ND<1 28 6/1512004 ND<1 28 12/28/2004 - ND<1 28 6/1412005 ND<1 28 12/6/2005 - ND<1 28

=

Rank Sum 280 Rank Mean 28=

GWB-6/MW-6 7/3012002 ND<1 28 9/24/2002 ND<1 28 10/21/2002 ND<1 28 12/312002 ND<1 28 6/24/2003 ND<1 28 12/17/2003 ND<1 28 6/1512004 ND<1 28 12/28/2004 ND<1 28 6/1312005 ND<1 28 12/5/2005 ND<1 28

=

Rank Sum 280 Rank Mean 28=

Page 1

GWC-13/MW-137/30/2002 ND<1 28 9/24/2002 ND<1 28 10/21/2002 ND<1 28 12/3/2002 ND<1 28 6/24/2003 - ND<1 28 12/17/2003 - ND<1 28 6/1512004 - 2 57 12/28/2004 ND<1 28 6/13/2005 - ND<1 28 12/6/2005 1 56

=

Rank Sum 337

=

Rank Mean 33.7 GWC-14/MW-147/30/2002 ND<1 28 9/24/2002 - 2.5 58 10/21/2002 ND<1 28 12/312002 4 59 6124/2003 ND<1 28 12/17/2003 ND<1 28

=

Rank Sum 229

=

Rank Mean 38.1667 GWC-5/MW-5 7/3012002 ND<1 28 9/24/2002 ND<1 28 10/21/2002 ND<1 28 12/312002 ND<1 28 6/24/2003 ND<1 28 12/17/2003 ND<1 28 6/1512004 ND<1 28 12/28/2004 ND<1 28 6/1312005 ND<1 28 12/6/2005 ND<1 28

=

Rank Sum 280 Rank Mean 28=

GWC-17/MW-176/15/2005 ND<1 28 12/6/2005 ND<1 28

=

Rank Sum 56

=

Rank Mean 28 GWC-18/MW-186/15/2005 ND<1 28

=

Rank Sum 28

=

Rank Mean 28 Calculation Results:

Kruskal-Wallis H Statistic = 2.40362 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 12.6541 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 240362 < 14.0671 incJicaling no significant group difference at 5'Yo significance level 126541 < 14.0671 indicating no significant group difference at 5% significance level when adjusted for ties Page 2

Concentrations (lJg/L)

Parameter: Benzene Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 59 Total Non-Detect: 58 Percent Non-Detects: 98.3051%

Total Background Samples: 10 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1510 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 There are 7 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 10 10 (100%) 7/30/2002 - ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005 - ND<2.5 ND<5 GWB-6/MW-6 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 GWC-13/MW-1310 9 (90%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 - ND<2.5 ND<5 12/17/2003 - ND<2.5 ND<5 6/15/2004 - ND<2.5 ND<5 Page 1

12/28/2004 ND<2.5 ND<5 6/13/2005 - ND<2.5 ND<5 12/6/2005 5 5 GWC-14/MW-146 6 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 - ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 GWC-5/MW-5 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-17/MW-172 2 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 There are 2 unused wells Well Samples NO Date Result Original EO-Blank 6 6 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 Trip Blank 3 3 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 Page 2

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

Non-Detects Replaced with 1/2 DL Total Sample Size = 59 i x(i) m(i) sum(mI\2) sum(mx) o 0 o o o 1 2.5 -2.14441 4.59848 -5.36102 2 2.5 -1.83843 7.97829 -9.95708 3 2.5 -1.64485 10.6838 -14.0692 4 2.5 -1.50626 12.9526 -17.8349 5 2.5 -1.38517 14.8713 -21.2978 6 2.5 -1.28155 16.5137 -24.5017 7 2.5 -1.19522 17.9423 -27.4897 8 2.5 -1.11232 19.1795 -30.2705 9 2.5 -1.03643 20.2537 -32.8616 10 2.5 -0.970094 21.1948 -35.2868 11 2.5 -0.903992 22.012 -37.5468 12 2.5 -0.841621 22.7203 -39.6509 13 2.5 -0.785774 23.3378 -41.6153 14 2.5 -0.729003 23.8692 -43.4378 15 2.5 -0.67449 24.3242 -45.124 16 2.5 -0.624956 24.7147 -46.6864 17 2.5 -0.573953 25.0442 -48.1213 18 2.5 -0.524401 25.3191 -49.4323 19 2.5 -0.478914 25.5485 -50.6296 20 2.5 -0.431644 25.7348 -51.7087 21 2.5 -0.385321 25.8833 -52.672 22 2.5 -0.342466 26.0006 -53.5282 23 2.5 -0.297612 26.0892 -54.2722 24 2.5 -0.253347 26.1533 -54.9056 25 2.5 -0.212137 26.1983 -55.4359 26 2.5 -0.168741 26.2268 -55.8578 27 2.5 -0.125661 26.2426 -56.1719 28 2.5 -0.0853288 26.2499 -56.3852 29 2.5 -0.0426257 26.2517 -56.4918 30 2.5 o 26.2517 -56.4918 31 2.5 0.0426257 26.2535 -56.3852 32 2.5 0.0853288 26.2608 -56.1719 33 2.5 0.125661 26.2766 -55.8578 34 2.5 0.168741 26.3051 -55.4359 35 2.5 0.212137 26.3501 -54.9056 36 2.5 0.253347 26.4142 -54.2722 37 2.5 0.297612 26.5028 -53.5282 38 2.5 0.342466 26.6201 -52.672 39 2.5 0.385321 26.7686 -51.7087 40 2.5 0.431644 26.9549 -50.6296 41 2.5 0.478914 27.1843 -49.4323 42 2.5 0.524401 27.4592 -48.1213 43 2.5 0.573953 27.7887 -46.6864 44 2.5 0.624956 28.1792 -45.124 45 2.5 0.67449 28.6342 -43.4378 46 2.5 0.729003 29.1656 -41.6153 Page 1

47 2.5 0.785774 29.7831 -39.6509 48 2.5 0.841621 30.4914 -37.5468 49 2.5 0.903992 31.3086 -35.2868 50 2.5 0.970094 32.2497 -32.8616 51 2.5 1.03643 33.3239 -30.2705 52 2.5 1.11232 34.5611 -27.4897 53 2.5 1.19522 35.9897 -24.5017 54 2.5 1.28155 37.6321 -21.2978 55 2.5 1.38517 39.5508 -17.8349 56 2.5 1.50626 41.8196 -14.0692 57 2.5 1.64485 44.5251 -9.95708 58 2.5 1.83843 47.9049 -5.36102 Sample Standard Deviation = 0.325472 Numerator = 28.7405 Denominator = 294.331 = 58 47.9049 W Statistic = 0.0976468 Critical value of 0852 exceeds 00875468 Evidence of non-normality at 95",(, level of ",in,~ifi(":m,,p 1Yo Critical value of 0945 exceeds 00976468 Evidence of non-normality at 88% level or significance Page 2

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

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Backgrou nd Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<2.5 29.5 9/24/2002 ND<2.5 29.5 10/21/2002 - ND<2.5 29.5 12/3/2002 ND<2.5 29.5 6/24/2003 ND<2.5 29.5 12/17/2003 ND<2.5 29.5 6/15/2004 ND<2.5 29.5 12/28/2004 ND<2.5 29.5 6/14/2005 ND<2.5 29.5 12/5/2005 ND<2.5 29.5 Rank Sum = 295 Rank Mean = 29.5 Background Rank Sum = 295 Background Rank Mean = 29.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002- ND<2.5 29.5 9/24/2002 ND<2.5 29.5 10/21/2002 ND<2.5 29.5 12/3/2002 ND<2.5 29.5 6/24/2003 ND<2.5 29.5 12117/2003 ND<2.5 29.5 6/15/2004 ND<2.5 29.5 12/28/2004 - ND<2.5 29.5 6/14/2005 ND<2.5 29.5 12/6/2005 - ND<2.5 29.5 Rank Sum = 295 Rank Mean = 29.5 GWB-6/MW-6 7/30/2002 ND<2.5 29.5 9/24/2002 ND<2.5 29.5 10/21/2002 ND<2.5 29.5 12/3/2002 ND<2.5 29.5 6/24/2003 ND<2.5 29.5 12/17/2003 ND<2.5 29.5 6/15/2004 ND<2.5 29.5 12/28/2004 ND<2.5 29.5 611312005 ND<2.5 29.5 12/5/2005 ND<2.5 29.5 Rank Sum = 295 Rank Mean = 29.5 Page 1

GWC-13/MW-137/30/2002 ND<2.5 29.5 9/24/2002 ND<2.5 29.5 10/21/2002 ND<2.5 29.5 12/3/2002 ND<2.5 29.5 6/24/2003 - ND<2.5 29.5 12/17/2003 - ND<2.5 29.5 6/15/2004 - ND<2.5 29.5 12/28/2004 ND<2.5 29.5 6/13/2005 - ND<2.5 29.5 12/6/2005 5 59

=

Rank Sum 324.5

=

Rank Mean 32.45 GWC-14/MW-147/30/2002 ND<2.5 29.5 9/24/2002 - ND<2.5 29.5 10/21/2002 ND<2.5 29.5 12/3/2002 ND<2.5 29.5 6/24/2003 ND<2.5 29.5 12/17/2003 ND<2.5 29.5

=

Rank Sum 177

=

Rank Mean 29.5 GWC-5/MW-5 7/30/2002 ND<2.5 29.5 9/24/2002 ND<2.5 29.5 10/21/2002 ND<2.5 29.5 12/3/2002 ND<2.5 29.5 6/24/2003 ND<2.5 29.5 12/17/2003 ND<2.5 29.5 6/15/2004 ND<2.5 29.5 12/28/2004 ND<2.5 29.5 6/13/2005 ND<2.5 29.5 12/6/2005 ND<2.5 29.5

=

Rank Sum 295

=

Rank Mean 29.5 GWC-17/MW-176/15/2005 ND<2.5 29.5 12/6/2005 ND<2.5 29.5 Rank Sum 59=

=

Rank Mean 29.5 GWC-18/MW-186/15/2005 ND<2.5 29.5

=

Rank Sum 29.5

=

Rank Mean 29.5 Calculation Results:

Kruskal-Wallis H Statistic = 0.245 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 4.9 95% Confidence comparison value is 14.0671 at 7 degrees of freedom 0.245 < 14.0671 indicating no significant group difference at 5% significance level 4.9 < 14.0671 indicating no significant group difference at 5% significance level when adjusted for ties Page 2

Concentrations (lJg/L)

Parameter: Trichloroethene Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 59 Total Non-Detect: 57 Percent Non-Detects: 96.6102%

Total Background Samples: 10 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1510 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 - ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 There are 7 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 10 9 (90%) 7/3012002 - ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 13 13 12/28/2004 - ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005 - ND<2.5 ND<5 GWB-6/MW-6 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 GWC-13/MW-1310 9 (90%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 - ND<2.5 ND<5 12/17/2003 - ND<2.5 ND<5 6/15/2004 - ND<2.5 ND<5 Page 1

12/28/2004 ND<2.5 ND<5 6/13/2005 - ND<2.5 ND<5 12/6/2005 5 5 GWC-14/MW-146 6 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 - ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 GWC-5/MW-5 10 10 (100%) 7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6115/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-17/MW-172 2 (100%) 6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 GWC-18/MW-181 1 (100%) 6/15/2005 ND<2.5 ND<5 There are 2 unused wells Well Samples ND Date Result Original EO-Blank 6 6 (100%) 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 - ND<2.5 ND<5 6/15/2005 - ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 Trip Blank 3 3 (100%) 12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 Page 2

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

Non-Detects Replaced with 1/2 DL Total Sample Size = 59 i x(i) m(i) sum(m A 2) sum(mx) o 0 o o o 1 2.5 -2.14441 4.59848 -5.36102 2 2.5 -1.83843 7.97829 -9.95708 3 2.5 -1.64485 10.6838 -14.0692 4 2.5 -1.50626 12.9526 -17.8349 5 2.5 -1.38517 14.8713 -21.2978 6 2.5 -1.28155 16.5137 -24.5017 7 2.5 -1.19522 17.9423 -27.4897 8 2.5 -1.11232 19.1795 -30.2705 9 2.5 -1.03643 20.2537 -32.8616 10 2.5 -0.970094 21.1948 -35.2868 11 2.5 -0.903992 22.012 -37.5468 12 2.5 -0.841621 22.7203 -39.6509 13 2.5 -0.785774 23.3378 -41.6153 14 2.5 -0.729003 23.8692 -43.4378 15 2.5 -0.67449 24.3242 -45.124 16 2.5 -0.624956 24.7147 -46.6864 17 2.5 -0.573953 25.0442 -48.1213 18 2.5 -0.524401 25.3191 -49.4323 19 2.5 -0.478914 25.5485 -50.6296 20 2.5 -0.431644 25.7348 -51.7087 21 2.5 -0.385321 25.8833 -52.672 22 2.5 -0.342466 26.0006 -53.5282 23 2.5 -0.297612 26.0892 -54.2722 24 2.5 -0.253347 26.1533 -54.9056 25 2.5 -0.212137 26.1983 -55.4359 26 2.5 -0.168741 26.2268 -55.8578 27 2.5 -0.125661 26.2426 -56.1719 28 2.5 -0.0853288 26.2499 -56.3852 29 2.5 -0.0426257 26.2517 -56.4918 30 2.5 o 26.2517 -56.4918 31 2.5 0.0426257 26.2535 -56.3852 32 2.5 0.0853288 26.2608 -56.1719 33 2.5 0.125661 26.2766 -55.8578 34 2.5 0.168741 26.3051 -55.4359 35 2.5 0.212137 26.3501 -54.9056 36 2.5 0.253347 26.4142 -54.2722 37 2.5 0.297612 26.5028 -53.5282 38 2.5 0.342466 26.6201 -52.672 39 2.5 0.385321 26.7686 -51.7087 40 2.5 0.431644 26.9549 -50.6296 41 2.5 0.478914 27.1843 -49.4323 42 2.5 0.524401 27.4592 -48.1213 43 2.5 0.573953 27.7887 -46.6864 44 2.5 0.624956 28.1792 -45.124 45 2.5 0.67449 28.6342 -43.4378 46 2.5 0.729003 29.1656 -41.6153 Page 1

47 2.5 0.785774 29.7831 -39.6509 48 2.5 0.841621 30.4914 -37.5468 49 2.5 0.903992 31.3086 -35.2868 50 2.5 0.970094 32.2497 -32.8616 51 2.5 1.03643 33.3239 -30.2705 52 2.5 1.11232 34.5611 -27.4897 53 2.5 1.19522 35.9897 -24.5017 54 2.5 1.28155 37.6321 -21.2978 55 2.5 1.38517 39.5508 -17.8349 56 2.5 1.50626 41.8196 -14.0692 57 2.5 1.64485 44.5251 -9.95708 58 5 1.83843 47.9049 -0.764953 Sample Standard Deviation = 1.39973 Numerator = 0.585153 Denominator = 5443.7 = 5847.9049 W Statistic =0.000107492 5°";, Critical value of 0962 exceeds 0000107492 Evidence of non-normality at 95% level of significance 1% Critical value of 0945 exceeds 0000107492 Evidence 0' non*normality at 99"10 level of significance Page 2