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Groundwater Monitoring Report - Plant Vogtle Landfills #3, Solid Waste Permit Nos. 017-007D(L)(I), Burke County, Georgia, September 2007
	ML073300645
Person / Time
Site:	Vogtle
Issue date:	09/14/2007
From:	Godfrey J; Southern Nuclear Operating Co
To:	Sean Mcmanus; Office of Nuclear Reactor Regulation, State of GA, Environmental Protection Div
References
	017-007D(L)(I), EV-07-1701
	Download: ML073300645 (212)
	v • d • e

Southern Nuclear Operating Company, Inc.42 illverness Cellter Parkway Sirmillgilam, Alabama 35242 September 14, 2007 FEDERAL EXPRESS Vogtle Electric Generating Plant landfill#3 Solid Waste Permit No.017-007D(l)(I)

\: SOUTHERN COMPANY Energy to Serve Your World'" File: E.03.41 log: EV-07-1701 Mr.Steve McManus Program Manager-Solid Waste Management Program Georgia Environmental Protection Division 4244 International Parkway, Suite 104 Atlanta, GA 30354

Dear Mr.McManus:

Pursuant to EPD Solid Waste Rule 391-3-4-.14, and in accordance with the Plant Vogtle landfill#3 approved landfill groundwater monitoring program, Southern Nuclear is submitting the June, 2007 semi-annual groundwater monitoring report.This report was prepared for Southern Nuclear by the Dextra Group and was completed in September, 2007.Statistically significant increases over background were indicated for several analyzed parameters.

In accordance with Rule 391-3-4, Southern Nuclear will place a notice in the landfill operating record within 14 days of submittal of this report.The notice will indicate which constituents have shown statistically higher concentrations compared to the background wells.Mercury and lead were detected in concentrations above their Mel in well GWA-7 during this monitoring event.These increases are attributed to turbidity in the sample which was elevated in this monitoring well.As such, analysis for these parameters will be reported on filtered and unfiltered samples during the next sampling event.Based on previous detections of mercury in several wells during Appendix II sampling, Southern Nuclear will continue to perform analysis for mercury in all landfill#3 wells during the routine groundwater sampling events.

/'EV-07-1701 Page 2 Georgia Environmental Protection Division Mr.Steve McManus Please find enclosed the June, 2007 landfill groundwater monitoring report for this sampling period.If you have any questions regarding this information, please contact Mickey Perry at (205)992-6994.Sincerely,/('51uluffl/

J.M.GodfreyManager-Environmental Affairs JMG/MEP:ahl Enclosure EV-07-1701 Page 3 Georgia Environmental Protection Division Mr.Steve McManus cc: Mr.Jeff Cown (w/o)Mr.Michael Kemp (w/o)Mr.Earl Hinkle (w/o)Mr.AI Frazer (East Central Division (w/o)Mr.Kurt Batsell (Dextra)(w/o)

EV-07-1701 Page 4 Georgia Environmental Protection Division Mr.Steve McManus bc: T.E.Tynan (w/o)J.G.Aufdenkampe (w/o)N.D.Dennis (w/o)C.L.Buck (w/o)S.A.Varnum (w/o)J.A.Joyner (w/o)D.G.Goodwin (Return Receipt)(w/o)SNC Document Management-RType CVA02.003 (Return Receipt)

September 12, 2007 D ex tra Mr.Mickey Perry Southern Nuclear Operating Company, Inc.40 Inverness Center Parkway P.o.Box 1295 Birmingham, Alabama 35201-1295

Subject:

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

Burke County, Georgia Groundwater Monitoring Report-June 2007

Dear Mr.Perry:

Please fmd the enclosed Groundwater Monitoring Report for the referenced facility.This report is submitted in accordance with the approved Groundwater Monitoring Plan and presents the results of routine semi-annual monitoring conducted at the landfill in June 2007,*.If you have any questions, please contact me at 770-578-9696.

We appreciate the opportunity to assist SNC with this project.Very truly yours, Ai7Jii Kurt R Batsd, PE Principal Cc: Mr, Don Goodwin, Plant Vogde The Dextra Group, Inc.1205 Johnson Ferry Road, Suite 136-446 Marietta, GA 30068 Environmental Busint!!S oluhom (/70)578-9696 Phone (/70)321-5345.Fax GROUNDWATER MONITORING REPORT PLANT VOGTLE LANDFILL#3 SOLID WASTE PERMIT Nos.017-007D(L)(I)

BURKE COUNTY, GEORGIA SEPTEMBER 2007 PREPARED FOR: Southern Nuclear Operating Company, Inc.40 Inverness Center Parkway Birmingham, Alabama 35201 PREPARED By: Kurt R.Batsel, P.E.Georgia License Number 16594 The Dextra Group, Inc.1205 Johnson Ferry Road Dextra Suite#136-446 Marietta, Georgia 30068 Plant Vogtle Landfill#3 Groundwater Monitoring Report, September 2007 Solid Waste Permit No.017-007D(L)(I)

Certification of Compliance or Non-Compliance Sampling and analysis has been conducted in accordance with the Georgia Environmental Protection Division's"Manual for Groundwater Monitoring" dated September 1991 and the Plant Vogtle Ground Water Monitoring Plan.Based on the results of this report, I, Mike Godfrey, certify that Plant Hatch is in compliance with the applicable rules regardin groundwater quality at a solid waste facility.ike Godfrey Manager-Environmental ffairs Southern Nuclear Operating Company, Inc.Groundwater Scientist Certification I, Kurt R.Batsel, certify that I am a qualified groundwater scientist demonstrated by a Georgia state registered professional engineer certification.

I have sufficient training and experience in groundwater hydrology and related fields to make sound professional judgments regarding groundwater monitoring and contaminant fate and transport.

I further certify that the data in this report has been prepared by myself or a subordinate working under my direction.

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

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

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.._..__._-1-Introduction 12-Monitoring Well Network 13-Groundwater Flow Rate and Directional Data 2 3.1 Geology/Hydrogeology 3.2 Groundwater Elevations and Gradients4-Sampling Procedures and Parameter Analyses 3 4.1 Procedures and Field Measurements 4.2 Parameter Analyses5-Groundwater Quality Evaluation 4 5.1 Detected Parameters 5.2 Statistical Analyses6-Conclusions 5 In Order Following Page 6 Tables1-Groundwater Elevations and Monitoring Well Construction Details2-Groundwater Sampling Field Measurements3-Constituents for Detection Monitoring4-Summary of Detected Parameters Figures1-Groundwater Contour Elevation Map, June 4-5, 2007 AppendicesA-Hydraulic Gradient Calculation SheetsB-Laboratory Analytical ReportsC-Statistical Analyses 1-Introduction This report presents the results of groundwater sampling conducted in June 2007 at private solid waste Landfill#3 operated by Southern Nuclear Operating Company, Inc.(SNC)at Plant Vogtle in Waynesboro, Georgia.Groundwater monitoring was initiated in 2002 in accordance with the approved Groundwater Monitoring Plan for the landfill.The landfill is operated under Solid Waste Permit#017-007D(L)(I) and used for disposal of non-putrescible,non-liquidoffice and solid waste as well as construction/demolition debris such as asbestos insulation, wooden pallets and concrete.Landfill#3, permitted in 1987, has been utilized solely for construction and demolition debris disposal since 1992.Sampling, analyses and data evaluation were conducted in accordance with the rules of the Georgia Department of Natural Resources Environmental Protection Division (EPD), Chapter 391-3-4, the September 1991"Manual for Groundwater Monitoring" and the approved Groundwater Monitoring Plan for the landfill.The findings of the initial four sampling events, conductedAugust 2002 through December 2002, and subsequent semi-annual sampling events are presented in reports previously submitted to the EPD.This report presents the results of the June 2007 semi-annual monitoring event.Subsequent reports will be prepared upon completion of semi-annual monitoring events as scheduled in the Groundwater Monitoring Plan.2-Monitoring Well Network The groundwater monitoring well network consists of nine permanent monitoring wells located along the perimeter of the waste management unit boundary of Landfill#3 (Figure 1).As shown in the figure, the wells are located outside of, but as close as practical to, the waste disposal areas.The wells are screened within the uppermost water-producing zones underlying the landfill, which occur from approximately 30 to 80 feet below land surface at Landfill#3.The nine permanent groundwater monitoring wells at Landfill#3 were installed in September 2001, July 2002 and June 2005.The well construction details are presented in Table 1.As noted in the table, original well GWC-16 been dry during groundwater monitoring events following its installation; therefore monitoring well GWC-16 was replaced by GWB-16 in October 2006.Wells GWA-7/MW-7 and GWA-15/MW-15 are located at the south and southwest portions of the landfill boundary.Wells GWC-5/MW-5, GWC-13/MW-13 and GWC-14/MW-14 are located along the eastern portion of the landfill boundary, and wells GWB-6/MW-6 and GWB-16/MW-16 are located along the northern landfill boundary.Wells GWC-17/MW-17 and GWC-18/MW-18 were recently installed at the southeast comer of the landfill as part of the contamination assessment program at Landfill#3.Well GWA-7/MW-7 was initially treated as a compliance (downgradient) well for Landfill#3.However, due to review of water level measurements showing this well to be side gradient from the active fill area of the landfill, well GWA-7/MW-7 was evaluated as a background well in the monitoring reports from the June 2003 and December 2003 sampling events.Based on the consistent detection of trichlorofluoromethane and the June 2004 detection of trichloroethene in Well GWA-7/MW-7, it was decided to return to evaluating this well as a compliance well.This approach was used in this monitoring report.The most appropriate designation for this well will continue to be evaluated in light of future monitoring results.For this report, well GWA-15/MW-15 is the designated background well, and the remaining wells are designated compliance wells.The wells will'be referred to as GWC-5, GWB-6, GWA-7, GWC-13, GWC-14, GWA-15, GWB-16, GWC-17 and GWC-18 in this report in accordance with the EPD's well identification guidelines.

Two stonnwater secliment ponds were completed in 2004 in accordance with the approved Design and Operational Plan for the Vogtle Landfill#3.As there was no discharge from either pond at the time of the June 2007 groundwater monitoring event, no surface water samples were collected from the surface water monitoring stations located at the pond outfalls.3-Groundwater Flow Rate and Directional Data 3.1 Geology/Hydrogeology The geology of the Plant V ogtle site consists of seclimentary deposits within the Coastal Plain physiographic province of Georgia.These secliments consist of unconsolidated sands, silts and days comprised of marine and non-marine fluvial deposits.Marls and limestone were also encountered at depth in deep borings completed at the landfill.The marls encountered during drilling were components of the Irwinton Sand member.Either all or parts of the Barnwell Group members (except the Utley Limestone member)were also encountered in the other borings conducted at the landfill.Underlying the Barnwell Group is the Lisbon Fonnation with its uppennost unit, the Blue Bluff Marl, located immediately under the Utley Limestone.

This marl layer, approximately 70 feet thick, is a near-impenneable layer that effectively confIDes the Tertiary and Cretaceous aquifers, the two confIDed aquifers beneath the Plant site.The occurrence of groundwater underlying the landfill appears in confined, semi-confined, unconfined, and perched hydrogeologic units.Groundwater is found primarily in sands, silty sands, dayey sands and marl limestone interfaces.

The main difference between boring/well water production characteristics and aquifer confining characteristics appears to be the thickness of the water-producing zone, the grain size of the sand component, the sand/day ratio and the characteristics of the marl/limestone interface.

Groundwater may also exist in an unconfined water table aquifer in the Barnwell sands and limestone that overlie the marL The water table aquifer at the site is on an interfluvial ridge, or a topographically high area in which the groundwater in the water table discharges along streams that surround the topographic high.The streams eventually discharge to the Savannah River.3.2 Groundwater Elevations and Gradients During well installation, the occurrence of groundwater was determined by collecting continuous split spoon samples beginning approximately five feet above th'e location of expected producing zones.At both landfill, groundwater was generally found in water producing zones less than one foot thick and was observed to be under semi-confined or confIDed conditions.

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

The water level measurements were then subtracted from the appropriate measuring point elevations to determine groundwater elevations in the wells.Hydraulic conductivity (K)in the wells was measured on September 26, 2001.The values ranged from 5.634 x 10-4 em/sec in GWB-6 to 3.064 x 10-2 em/sec in GWA-2.Depth to water measurements and groundwater elevations for the wells at Landfill#3 are presented in Table 1.Groundwater elevations measuredtodate indicate that the groundwater elevation, or hydraulic'head,'is greatest beneath the center area of the landfill, and decreases to the southeast, to 2 the northeast and to the west-southwest beneath the landfill.This mounding effect is believed to be the result of natural inftltration in the sandy soils within the historic topographically high area in the center of the landftll.This topographically high area, which encompasses a broad area within the landfill, is a natural site feature that was present prior to any landftlling operations.

Figure 1 shows the topography of the landftll.As discussed previously, the water-bearing stratigraphy beneath Landftll#3 is composed of individual saturated sand units within a clayey/marl matrix.These units mayor may not be interconnected.

As such, groundwater elevations in the monitoring wells may reflect head in multiple perched layers and may not represent groundwater

'flow'direction beneath the landfill.Figure 2 presents a map depicting the saturated head contours measured on June 5, 2007.Monitoring well GWA-15 is the well most representative of background water quality at the site because of the distance between the well and the current landfilled area, and the location of the area of relatively higher head located between the well and the current landfilled area on the eastern portion of the site.This well is therefore used as a background well to evaluate groundwater quality at the landfill.Well GWA-7 is now evaluated as a downgradient well based on review of the groundwater elevation and chemical analysis data collected since 2002.The hydraulic gradient was calculated using a three-point problem from groundwater elevations in the monitoring wells as follows for each main direction of head difference:

Southwest:

GWB-6, GWA-7 and GWA-15;Northeast:

GWB-16, GWB-6 and GWC-5;and Southeast:

GWC-13, GWA-7 and GWC-14.The calculated hydraulic gradients are presented on the contour map (Figure 1).The calculations used in determining the gradients are provided in Appendix A.For the June 2007 event, the southwest gradient was 0.009, the northeast gradient was 0.16, and the southeast gradient was 0.12.The southwest gradient has typically been 0.01, with a maximum of 0.02 Oune 2003), reflecting the consistently flattest gradient across the landfill.The northeast trending gradient has ranged from a minimum of 0.08 (October and December 2002, June 2004)to a maximum of 0.17 Oune 2003).'The southeast gradient has ranged from a low of 0.06 (December 2002)to a maximum of 0.16 Oune 2003).For this monitoring event, the steepest gradient was observed in the northeast flow component.

4-Sampling Procedures and Parameter Analyses 4.1 Procedures and Field Measurements Prior to sample collection during each sampling event, depth to water measurements are recorded in each well from the surveyed elevations using an electronic water level indicator.

The water level indicator is decontaminated using a potable water and Alconoxwash 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 entitledLow-Flow Purging&Sampling of Groundwater Monitoring Wells (Bulletin QAD023)".The wells were purged and sampled using QED SamplePro pumps equipped with Teflonbladders.Purge rates were matched to the recovery rates of the wells, verified by periodic depth to water measurements to determine draw-down during purging.Purging was conducted until at least three consecutive stable readings of pH, conductivity, and turbidity were 3 recorded.Groundwater samples were then collected directly into pre-preserved sample containers supplied by the laboratory.

Final measurements of pH, conductivity, and turbidity were performed to verify that these parameters remained stable during sampling.J:he well water temperature was added as a field parameter monitored during the purging of the wells as of the June 2007 groundwater monitoring event.All field instruments were calibrated in the field daily prior to use and at the conclusion of each sampling event.The field measurements are provided in Table 2.After each sample was collected, the SamplePro pumps and air lines were decontaminated according to the following protocol:*****The pump and air line were placed on clean plastic;The pump was disassembled and the bladder was removed;The pump was sprayed with a potable water and Alconoxsolution, followed with a distilled water rinse until all soap residue was removed;A new pump bladder was then installed in the pump prior to reassembly; and The pump air line was placed in a clean plastic bag between use at each well.4.2 Parameter AnalYses In accordance with the approved Groundwater Monitoring Plan, the groundwater samples and field and laboratory quality assurance/quality control (QA/QC)samples were analyzed for the Chapter 391-3-4 Appendix I list of parameters, which consists of total metals and volatile organic compounds (Table 5).The field QA/QC samples consisted of duplicate samples, trip blanks and equipment blanks.Metals analyses were conducted using EPA Methods 6010B/7841, and VOCs analyses were conducted using EPA Methods 6010B/8260B and 504.1 to provide sufficiently sensitive quantitation limits for comparison with maximum contaminant limits.Advanced Chemistry Labs, Inc., Atlanta, Georgia performed the laboratory analyses.The complete laboratory analytical reports, which include field and laboratory QA/QC results and chain-of-custody forms, are provided in Appendix B.Samples were also collected for the Chapter 391-3-4 Appendix'II parameter mercury in all wells due to this parameter's detection in previous assessment monitoring conducted at the landfill.5-Groundwater Quality Evaluation 5.1 Detected Parameters Table 4 presents a summary of all analyzed parameters detected above the laboratory method reporting limits.Barium was detected at concentrations below the MCL in wells GWC-5, GW A-7, in the replicate sample well GWA-7 and GWC-13.Nickel and Zinc were detected in wells GWA-5, GWB-6, GWA-7, in the replicate sample well GWA-7, GWC-13 and GWA-15;there is no MCL for nickel or zinc.In the compliance well GW A-7 and in the replicate sample well GWA-7 chromium, beryllium and vanadium were detected at low levels, all were below applicable MCLs.Inthecompliance well GWA-7 and in the replicate sample well GWA-7 mercury and lead were detected at concentrations greater then the respective MCLs.In the compliance well GW A-7 the VOC trichlorofluoromethane was detected at 115 ug/l, at 109 ug/l in the replicate sample well GWA-7;there is no MCL for trichlorofluoromethane.

In the compliance well13, l,l-dichloroethane, chlorobenzene, cis-l,2-dichloroethene, and'trichlorofluoromethane were detected at low levels.All VOC concentrations in GWC-13 were below applicable MCLs.No parameters were detected in any of the field or laboratory QA/QC samples, and the laboratory QA/QC checks were within acceptable limits.4 5.2 Statistical AnalYses 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 conductedconsistentwith U.S.EPA recommended methods as detailed in the guidance document"Statistical Analysis of Groundwater Monitoring Data at RCRA FacilitiesInterim Final Guidelines" (1989)and the corresponding Addendum (1992).The following methodology was used to evaluate the data:**The distribution of the data was first evaluated for normality using either the Shapiro-Wilkes Test (for parameters with less than 50 samples)or the Shapiro-Francia Test (for parameters with greater than 50 samples)as recommended in the 1992 EPA guidance.The tests indicate that the concentrations of all detected parameters do not follow normal distributions.

For the well data sets, the Kroskal-Wallis non-parametric analysis of variance method was used to compare the concentrations of individual parameters in each compliance well to the concentrations of these parameters in the background well.This method is recommended by the 1992 EPA guidance for non-normal sample sets that have between 15%and 90%detects.The detailed statistical analyses are provided in Appendix C and the results are summarized below.At Landfill#3, statistical analysis was performed for the twelve detected parameters barium, nickel, zinc, mercury, chromium, beryllium, lead, vanadium, 1,1-dichlo.roethane, chlorobenzene,dichloroethene and trichlorofluoromethane.

Compared to background well GWA-15/MW-15, the analyses indicate statistically significant higher concentrations of the following parameters:

- - Barium, 1,1-dichloroethane, cis-1,2-dichloroethene chlorobenzene and trichlorofluoromethane in the GWC-13 well samples, Barium, 1,1-dichloroethane, and cis-1,2-dichloroethene in the GWC-14 well samples, and T richloroflouromethane in the GWA-7/MW-7 well samples.It should be noted that the statistical analyses data sets include all sampling events to date for all wells.As a result, statistically higher concentrations of detected parameters in a well are determined based on all reported concentrations (including consideration of non-detects) from all samplingeventsfor that well.If a concentration is lower in the current event for a well, the complete data set for the well may still indicate a statistically higher concentration over the background well data set considering all sampling events to date.For example, although there was no sample available for GWC-14 for this event, the statistical analyses indicate significantly higher concentrations of barium, 1,1-dichloroethane, and cis-1,2-dichloroethene for the GWC-14 historical sample data set.6-Conclusions Since a statistically significant increase over background is indicated for several analyzed parameters in wells GWC-13 and GWC-14 at Landfill#3, SNC will place a notice in the operating record within 14 days of submittal of this report as required by Chapter 391-3-4.The notice will indicate which constituents have shown statistically significant higher concentrations compared to the background wells.5 The exceedances in well GWA-7 are attributed to elevated turbidity in the sample.SNC proposes to perform f1ltered versus unf1ltered sampling for metals in GWA-7 during the next semi-annual event to conftrm that the exceedances are due to high turbidity in that well.Based on prior detections of the Appendix II parameter mercury in Landfill#3 wells, SNC will continue to perform analysis for mercury in all Landfill#3 wells during the regular semi-annual sampling events.6 TABLES Table 1 Southern Nuclear Operating Company Plant Vogtle Landfill#3 Groundwater Elevations and Monitoring Well Construction Details Total Boring Total Well Riser Groundwater Measuring Point Elevation Ground Surface Elevation Depth to WaterDepthDepth Height Screened Interval Elevation WelllD Date (feet, msl)(feet, msl)(feet, topvc)(feet, bls)(feet, topvc)(feet)(feet, msl)(feet, msl)GWC-5/MW-5 9/2612001 251.96 249.11 48.65 67 56.85 2.85 195.11 to 205.11 203.31 7/29/2002 50.21 201.75 9/9/2002 50.43 201.53 10/21/2002 49.26 202.70 12/3/2002 49.26 202.70 6/24/2003 44.60 207.36 12/16/2003 47.55 204.41 6/15/2004 47.76 204.20 12/28/2004 49.13 202.83 6/13/2005 45.94 206.02 12/5/2005 48.05 203.91 6/5/2006 47.85 204.11 12/4/2006 49.85 202.11 6/5/2007 45.22 206.74 GWB-6/MW-6 9/26/2001 278.87 276.45 47.47 67 64.42 2.42 214.45 to 224.45 231.40 7/29/2002 48.52 230.35 9/9/2002 48.55 230.32 10/21/2002 49.21 229.66 12/3/2002 48.86 230.01 6/24/2003 46.92 231.95 12116/2003 46.30 232.57 6/15/2004 46.49 232.38 12/28/2004 47.22 231.65 6/13/2005 47.84 231.03 12/5/2005 47.20 231.67 6/5/2006 47.38 231.49 12/4/2006 47.69-231.18 6/5/2007 48.93 229.94 GWA-7/MW-7 9/26/2001 261.33 259.39 31.11 50 41.94 1.94 219.39 to 229.39 230.22 7/29/2002 33.16 228.17 9/9/2002 33.25 228.08 10/21/2002 33.20 228.13 12/3/2002 32.94 228.39 6/24/2003 27.51 233.82 12116/2003 30.59 230.74 6/15/2004 30.87 230.46 12128/2004 32.33 229.00 6/13/2005 30.64 230.69 12/5/2005 31.60 229.73 6/5/2006 31.74 229.59 12/4/2006 32.84 228.49 6/4/2007 32.95 228.38 Page 1 of3 Table 1 Southern Nuclear Operating Company Plant Vogtle Landfill#3 Groundwater Elevations and Monitoring Well Construction Details Total Boring Total Well Riser Groundwater Measuring Point Elevation Ground Surface Elevation Depth to Water Depth Depth Height Screened Interval Elevation WelllD Date (feet, msl)(feet, msl)(feet, topvc)(feet, bls)(feet, topvc)(feet)(feet, msl)(feet, msl)GWC-13/MW-13 7/29/2002 273.08 270.99 40.92 50 50.09 2.09 222.99 to 232.99 232.16 9/9/2002 41.00 232.08 10/21/2002 40.94 232.14 12/3/2002 4D.48 232.60 6/24/2003 36.90 236.18 12/16/2003 39.17 233.91 6/15/2004 39.59 233.49 12/28/2004 40.59 232.49 6/1312005 38.76 234.32 12/5/2005 39.93 233.15 6/5/2006 39.97 233.11 12/4/2006 40.93 232.15 6/4/2007 40.39 232.69 GWC-14/MW-14 7/29/2002 262.88 260.66 40.05 55 53.22 2.22 209.66 to219.66222.83 9/9/2002 42.31 220.57 10/21/2002 42.79 220.09 1213/2002 42.35 220.53 6/24/2003 44.29 218.59 12/16/2003 51.52 211.36 6/15/2004 52.11 210.77 12/28/2004 52.66 210.22 6/13/2005 51.66 211.22 12/5/2005 52.56 210.32 6/5/2006 53.03 209.85 12/4/2006 52.91 209.97 6/5/2007 53.00--209."88 GWA-15/MW-15 7/29/2002 268.15 265.34 45.94 55 55.81 2.81 212.34 to 222.34 222.21 9/9/2002 46.05 222.10 10/21/2002 46.19 221.96 12/3/2002 46.23 221.92 6/24/2003 41.76 226.39 12/16/2003 43.29 224.86 6/15/2004 43.24 224.91 12128/2004 44.68 223.47 6/13/2005 40.1 228.05 12/5/2005 47.39 220.76 6/5/2006 44.32 223.83 12/4/2006 45.03 223.12 6/4/2007 45.22 222.93 Page 2 of 3 Table 1 Southern Nuclear Operating Company Plant Vogtle Landfill#3 Groundwater Elevations and Monitoring Well Construction Details Total Boring Total Well Riser Groundwater Measuring Point Elevation Ground Surface Elevation Depth to Water Depth Depth Height Screened Interval Elevation WelilD Date (feet, msl)(feet, msl)(feet, topvc)(feet, bls)(feet, topvc)(feet)(feet, msl)(feet, msl)GWB-16/MW-16 7/29/2002 256.95 254.57 DRY 65 55.36 2.36 201.57 to 211.57 DRY 9/9/2002 DRY DRY 10121/2002 DRY DRY 12/312002 DRY DRY 6124/2003 DRY DRY 12/16/2003 DRY DRY 611512004 DRY DRY 12/26/2004 DRY DRY 611312005 DRY DRY 12/5/2005 DRY DRY 61512006 DRY DRY 1214/2006 Abandoned Abandoned 61512007 GWB-16/MW-16R 12/4/2006 237.59 235.51 77.45 60.60 60.60 3.00 156.79 to 166.79 160.14 6/5/2007 79.05 156.54 GWC-17/MW-17 6/13/2005 222.64 220.26 72.62 65 62.00 3.00 141.26 to 151.26 149.62 12/5/2005 72.6 150.04 6/5/2006 72.61 150.03 12/4/2006 72.65 149.99 6/5/2007 61.2 141.44 GWC-16/MW-16 6/13/2005 227.54 225.03 77.05 60 79.00 3.00 149.03 to159.03150.49 12/5/2005 DRY DRY 61512006 DRY DRY 1214/2006-

-DRY*'-DRY 61512007 DRY DRY Notes: Ground surface measured at survey bolt set in concrete pad at base of protective casing.msl=mean sea level;topvc=measured from top of pvc riser;bls=below land surface Page 3 of 3 o Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill#3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'1 Temperature Turbidity'2 Purged Odor Color Comments GWC-5/MW-5 9/2612001 5.11 47.5 28.6 6.0 none cloudy Well development only 7/29/2002 5.41 24.4 2.83 1.75 none none 9/912002 8.13 365 4.11 2.0 none none 10/21/2002

12/312002 5.94 117 7.8 2.0 none none 6/24/2003 5.18 29 3.5 6.0 none none 12/16/2003 6.27 210 79.7 3.0 none cloudy Split with GAEPD 6/1612004 5.94 40.7 16.5 2.0 none none 12/28/2004 4.96 30 7.33 2.3 none none 6/1312005 5.86 580 6.2 3.5 none none 12/6/2005 5.48 548 6.03 2.5 none none 6/512006 6.38 550 2.23 1.5 none none 12/4/2006 4.50 396 8.6 2.5 none none 6/512007 4.57 500 75.7 9.8 2.0 none none GWB-6/MW-6 9/2612001 7.13 242 25.6 2.0 none.-Well development only 7/29/2002 6.75 1,338 0.35 1.5 none none 9/9/2002 4.13 198 6.43 1.5nonenone 10/21/2002 6.72 573 0.44 2.5 none none 12/312002 6.14 116 0.45 1.5 none none 6/24/2003 7.09 155 9.1 1.5 none none 12/17/2003 6.82 126 2.27 1.5 none none 6/1612004 6.77-178.5 1.25 2.75'none none 12128/2004 7.05 130 2.84 2.25 none none 6/13/2005 6.88 125 2.67 2.50 none none 12/5/2005 7.10 122 2.22 2.00 none none 6/512006 7.20 120 2.41 1.00nonenone 12/5/2006 6.45 100 1.00 1.00 none none 6/512007 5.05 78 75.7 0.53 1.00 none none 1 of4 Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill#3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'1 Temperature Turbidity'2 Purged Odor Color Comments GWA-7/MW-7 9/2612001----cloudy 30.0----Well development only 7/29/2002 6.97 251 8.33 2.5 none none 9/912002 7.52 327 9.97 5.0 none none 10/21/2002 4.39 92 3.14 2.0 none none 12/312002 6.51 188 7.3 2.5nonenone 6/24/2003 7.02 163 101.3 4.0 none dark brown Turbidity>100 ntu for 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 12/16/2003 5.73 62.7 100 4.0 none mod.brown Turbidity 85-100 ntu for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 6/1512004 5.94 68.9 42.7 2.0nonenone 12/28/2004 8.16 109 9.86 3.5 none none 6/1412005 7.25 275 8.56 3.0 none none 12/6/2005 5.37 92 96 8.5 none mod.brown Turbidity>100 ntu for 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 6/512006 5.12 151 20 5.0nonenone 12/4/2006 6.33 180 2.18 2.0 none none 6/512007 6.50--71.4 152 4.0 none tan Conductivity meter malfunctioned GWC-13/MW-13 7/29/2002 6.52 421 0.66--9/912002 5.96 77.5 6.40 1.0nonenone 10/21/2002 6.19 73.4 3.09 2.5 none none 12/312002 6.54 481 1.00 2.5nonenone 6/24/2003 5.95 271 2.02 2.5nonenone 12/16/2003 5.65 294 0.75 6.0 none none Split with GAEPD 6/1612004 5.84 366 4.70 1.75nonenone 12128/2004 6.09 268 0.38 1.75nonenone 6/13/2005 5.75 255 2.00 1.50 none none 12/6/2005 4.03 4.24 1.07 2.50 none none 6/512006 7.17 250 1.11 1.00 none none 12/5/2006 6.35 91 0.79 1.00 none none 6/412007 6.04 48 72.2 1.56 1.00nonenone 20f4 Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill#3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity'1 Temperature Turbidity'2 Purged Odor Color Comments GWC-14/MW-14 7/29/2002 6.49 448 1.15--nonenone 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 4.5nonenone 6/24/2003 5.97 197 3.61 2.5 none none 12/17/2003

Split with GAEPD-VOCs

&metals 6/15/2004------------Well Dry 12/28/2004

Too little water to purge and sample 611412005------------Too little water to purge and sample 12/6/2005------------Too little water to purge and sample 61612006------------Too little water to purge and sample 1215/2006------------Too little water to purge and sample 61512007--------------Too little water to purge and sample GWA-15/MW-15 7/29/2002 5.70 95.8 1.12 4.0 none none 9/912002 5.92 118 8.53 2.5 none none 10/21/2002 5.19 81 1.88 4.5nonenone 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 6.5nonenone Split with GAEPD 6/15/2004 6.47 55.7 5.59 2.25 none none 12/28/2004

-6.83 50.0-8.85 3.00 none Aone-6/1412005 7.85 72.0 7.75 4.00 none none 12/5/2005 6.88 56.0 2.3 2.50nonenone 6/512006 7.15 55.0 1.6 2.00nonenone 12/4/2006 4.86 50.0 8.8 1.00 none none 6/412007 6.16 50.0 81.4 4.95 1.00 none none 30f4 Table 2 Southern Nuclear Operating Company Plant Vogtle Landfill#3 Groundwater Sampling Field Measurements Gallons WelllD Date pH Conductivity" Temperature Turbidity'2 Purged Odor Color Comments GWB-16/MW-16 7/29/2002------------Well Dry 9/9/2002------------Well Dry 10/21/2002

Well Dry 12/3/2002------------Well Dry 6/24/2003------------Well Dry 12/16/2003

Well Dry 6/15/2004------------Well Dry 12/28/2004

Well Dry 6/15/2005------------Well Dry 12/6/2005------------Well Dry 6/5/2006------.-----Well Dry Well Abandon on 10-4-2006 GWB-16/MW-16R 10/5/2006 6.54 56 4.81 2.5 none none Well Development 12/5/2006 7.36 80 5.4 1 none none 61712007--------------Too little water to purge and sample GWB-17/MW-17 6/15/2005 5.84 77.58 5.29 3.5 none none 12/6/2005 6.33 68 10 3 none none 6/5/2006 6.56 80 10 1.5 none none 1215/2006 5.41 80 8.7 1.5nonenone 6/5/2007--.-------------Too little water-to purge and sample GWB-18/MW-18 6/15/2005 6.67 85.6 8.2 4.2 none none 12/6/2005------------Well Dry 6/5/2006------------Well Dry 12/5/2006------------Well Dry 6/5/2007--------------Well Dry Notes:--=no data recorded;/1-Conductivity in units of umhos/sec/2-Turbidity in units of NTU 40f4 Table 3 Southern Nuclear Operating Company Plant Vogtle Landfill#3 Appendix I to Part 40 CFR Part 258: Constituents for Detection Monitoring (1)

Cornmon Name (2)Inorganic Constituents:

(1)Antimony.(2)Arsenic.(3)Barium.(4)Beryllium.(5)Cadmium.(6)Chromium ,.(7)Cobalt.(8)Copper.(9)Lead.(10)Nickel.(11)Selenium.(12)Silver.(13)Thallium.(14)Vanadium.(15)Zinc.Organic Constituents:

(16)Acetone.(17)Acrylonitrile

.(18)Benzene.(19)Bromochloromethane

.(20)Bromodichloromethane

.(21)Bromoform; Tribromomethane

.(22)Carbon disulfide.(23)Carbon tetrachloride

.(24)Chlorobenzene

.(25)Chloroethane; Ethyl chloride:.(26)Chloroform; Trichloromethane

.(27)Oibromochloromethane; Chlorodibromomethane

.(28)1,2-0ibromo-3-chloropropane; OBCP.(29)1,2-0ibromoethane; Ethylene dibromide; EOB.(30)o-Oichlorobenzene; 1,2-0ichlorobenzene

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

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

.(33)1,1-0ichloroethane; Ethylidene chloride ,.(34)1,2-0ichloroethane; Ethylene dichloriqe

.(35)1,1-0ichloroethylene; 1,1-0ichloroethene; Vinylidene chloride.(36)cis-1,2-0ichloroethylene; cis-1,2-0ichloroethene

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

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

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

.(41)Ethylbenzene

.(42)2-Hexanone; Methyl butyl ketone.(43)Methyl bromide;Bromomethane.(44)Methyl chloride;Chloromethane

.Page 1 of 2 EPA Method 6010B/7041 6010B/7061 6010B/7091 6010B/7091 6010B/7131 6010B/7191 6010B/7201 6010B/7211 6010B/7421 6010B/7 520 6010B/7741 6010B/7761 6010B/7841 6010B/7 911 6010B/7951 8260 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)(45)Methylene bromide;Dibromomethane

.(46)Methylene chloride;Dichloromethane

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

.(48)Methyl iodide;Iodomethane

.(49)4-Methyl-2-pentanone; Methyl isobutyl ketone.(50)Styrene.(51)1,1,1,2-Tetrachloroethane

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

.(53)Tetrachloroethylene; Tetrachloroethene; Perchloroethylene

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

.(56)1,1, 2-Trichloroethane

.(57)Trichloroethylene; Trichloroethene

.(58)Trichlorofluoromethane; CFC-11.(59)1,2, 3-Trichloropropane

.(60)Vinyl acetate.(61)Vinyl chloride.(62)Xylenes.EPA Method 8260 (1)This list contains 47 volatile organics for which possible analytical procedures provided in EPA Report SW-846"Test Methods for Evaluating Solid Waste,**third edition, November 1986, as revised December 1987, includes Method 8260;and 15 metals for which SW-846 provides either Method 6010 or a method from the 7000 series of methods.(2)Common names are those widely used in government regulations, scientific pUblications, and commerce;synonyms exist for many chemicals.

Page 2 of 2 Table 4 Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters June 2007 CONSTITUENT MCl WEll SAMPLES GWC-5/MW-5 GWB-6/MW-6 GWA-7/MW-7 GWA-7IMW-7'GWC-13/MW-13GWC-14/MW-14 GWA-15/MW-15 GWS-16IMW-16R GWC-17IMW-17 GWC-18fMW-18 Metals 1 Barium 2.00 0.035 Sal 0.220 0.207 0.061 t>\S Sal NS NS NS Nicker NA 0.041 0.041 0.036 0.034 Sal NS 0.036 NS NS NS linc NA 0.193 0.528 0.219 0.211 0.089 NS 0,442 NS NS NS Mercury*0.002 Sal BQl 0.0026 0.0047 Sal NS Sal NS NS NS Chromium (total)0.1 Sal Sal 0.083 0.063 Sal Ns Sal NS NS NS Beryllium 0.004SalSal 0.004 0.004 Sal Ns Sal Ns NS NS lead 0.D15'Sal Sal 0.031 0.030 Sal NS Sal NS NS NS Vanadium NASalSal 0.054 0.051 Sal NS Sal NS NS NS Organics 2 1,1-Dichloroethane NA SalSalSal Sal 28 NS Sal NS NS NS Chlorobenzene 100SalSalSalSal 15 N,S Sal Ns NS NS cis-1 ,2-Dichloroethene 70SalSal Sal Sal 16 NS Sal Ns NS NS Trichlorofluoromethane NA Sal Sal 115 109 98 NS Sal Ns NS NS Vinyl chloride Sal Sal SalSalSal Ns Sal NS NS NS Benzene SalSalSalSalSal NS Sal Ns NS NS Trichloroethane SalSalSalSalSal NS Sal Ns NS NS BOL-Below quantification level;J-Estimated Value Mel-Maximum Contaminant Level per EPD Rule Chapter 391-3-5;NA-None available NS-Not sampled;well dry or insufficient recovery to sample well 1Metals concentrations in mg/L 20 rgan ics concentration units in ug/l or ppb 3Replicate sample of well GWC-7/MW-7 sample 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program SActlon Level Bold indicates detected concentration is greater than the Mel.Page 1 of 13 Table 4 (Continued)

)Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters December 2006 CONSTITUENT MCl WEll SAMPLES GWC-5/MW-5 GWB-6/MW-6 GWA-7/MW-7 GWA-7IMW-7' GWC-13/MW-13 GWC-14/MW-14 GWA*15/MW-15 GWB-16/MW-16R GWC-17/MW-17 GWC-18/MW-18 Metals 1 Barium 2.00 0.021 BOl BOl BOl 0.059 NS BOl BOl BOl NS Nickel NA BOl BOl BOl BOl BOl NS 0.089 BOl BOl NS Zinc NA0.0620.028 BOl BOl 0.055 NS 0.316 BOl BOl NS Mercury" 0.002 BOl BOl 0.0008 0.0016 BOl NS BOl BOl BOl NS Organics 2 1,1-Dichloroethane NA BOlBOlBOl BOl 20 NS BOl BOl BOl NS Chlorobenzene 100 BOl BOl BOl BOl BOl NS BOl BOl BOl NS cis-1 70 BOl BOl BOl BOl 10 NS BOl BOl BOl NS Trichlorofluoromethane NA BOl BOl 152 159 104 NS BOl BOl BOl NS Vinyl chloride 2 BOl BOl BOl BOl BOl NS BOl BOl BOl NS Benzene BOlBOlBOl BOl BOl NS BOl BOl BOl NS Trichloroethene BOl BOl BQl BOl BOl NS BOl BOl BOl NS sal-Below quantification level;J-Estimated Value Mel*Maximum Contaminant Level per EPD Rule Chapter 391*3-5;NA-None available NS-Not sampled;well dry or insufficient recovery to sample well 1Metals concentrations in mg/L 20rganics concentration units in ug/l or ppb JReplicate sample of well GWC-7/MW-7 sample 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program Bold indicates detected concentration is greater than the MeL.Page 2 of 13 Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters June 2006 CONSTITUENT MCl WEll SAMPLES GWC-5/MW-5 GWB-6/MW-6 GWA-7/MW-7 GWA-7/MW-7' GWC-13/MW-13 GWC-14/MW-14 GWA-151MW-15 GWC-17/MW-17 GWC-18/MW-18 Metals'Barium 2.00 0.031 BOl BOl BOl 0.051 NS BOl BOl NS Zinc NA 0.100 0.083 0.484 0.266 0.213 NS 0.063 0077 NS Organics 2 1,1-Dichloroethane NABOlBOl BOl BOl 15 NS BOl BOl NS Chiorobenzene 100 BOl BOl BOl BOl BOl NS BOl BOl NS cis-1,2-Dichloroethene 70BOlBOl BOl BOl 8 NS BOl BOl NS Tlichlorafluoromethane NA BOl BOl 66 94 92 NS BOl BOl NS Vinyl chlolide 2BOlBOl BOl BOl BOl NS BOl BOl NS Napthalene 4NANA NA 5 BOl NA NS NA NA NA Benzene 5BOlBOlBOl BOl BOl NS BOl BOl NS Tlichloroethene 5 BOl BOl BOl BOl BOl NS BOl BOl NS BOl-Below quantification level;J-Estimated Value MCl-Maximum Contaminant level per EPD Rule Chapter 391-3-5;NA-None available NS-Not sampled;well dry or Insufficient recovery to sample well'Metals concentrations in mgll 20rganics concentration units in ugll or ppb'Replicate sample of well GWC-7/MW-7 sample 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Manitoling Program Bold indicates detected concentration is grealerthan the MCl.Page 3 of 13 III Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters December 2005 CONSTITUENT MCl WEll SAMPLES GWC-5/MW-5 GWA-7/MW-7 GWA-7/MW-7 3 GWC-13/MW-13 GWC-14/MW-14 GWA-151MW-15 GWC-17/MW-17 GWC-18/MW-18 Metals'Salium 2.00SalSal 0.024 0.022 0.044 NS Sal Sal NS Zinc NA0.0550.0200.068 0.217 0.194 NS 0.042 0.096 NS Organics 2 1 ,1-Dichloroethane NA Sal SalSalSal 18 NS Sal Sal NS Chlorobenzene 100SalSalSalSal 4J NSSalSal NS cis-1,2-Dichloroethene 70 SalSalSal Sal 9 NSSalSal NS Tlichlorofluoromethane NA Sal Sal 88 85 60 NSSalSal NS Vinyl chloride 2 SalSalSal Sal 1J NSSalSal NS Napthalene 4NANA NA 5 Sal NA NS NA NA NA Benzene 5 Sal Sal Sal Sal 5 NS Sal Sal NS Tlichloroethene 5 SalSalSal Sal 5 NS Sal Sal NS Sal-Selow quantitication level;J-Estimated Value MCl-Maximum Contaminant level per EPD Rule Chapter 391-3-5;NA-None available NS-Not sampled;well dry or insufficient recovery to sample well'Metals concentrations in mglL'Organics concentration units in ugn or ppb 3Replicate sample of well GWC-7/MW-7 sample 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoling Program Bold indicates detected concentration is greater than the MCL.Page 4 of 13 Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters June 2005 CONSTITUENT MCl WEll SAMPLES GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-131MW-13' GWC-14/MW-14 GWA-15/MW-15 GWC-17/MW-17 GWC-18/MW-18 Metals'Barium 2.00 Sal sal sal 0.028 0.031 NS salsalsal Zinc NA Sal sal sal 0.020 sal NS 0.029 sal sal Copper 1.3 6 Sal sal salsalsal NS salsalsal Mercury4 0.002 sal sal sal sal sal NS sal sal sal Chromium (total)01 Salsalsalsal sal NS sal sal sal Seryllium 0.004salsal sal sal sal NSsalsalsal Cadmium 0.005 Sal sal sal sal sal NS sal sal sal Nickel NA Sal sal sal sal sal NS sal sal sal lead 0.015'Sal BQl sal sal sal NS salsalsal Vanadium NA Sal salsalsalsal NS sal sal sal Organics 2 1,1-Dichloroethane NA sal sal sal 15 15 NS sal sal sal Carbon disulfide NA Sal sal sal sal sal NS sal 32 sal Chlorobenzene 100salsal sal sal sal NS sal sal sal 1 ,4-Dicholorbenzene 75 sal sal sal sal sal NS sal sal sal Methylene chloride 5 Sal sal sal sal sal NS sal sal sal cis-1,2-Dichloroethene 70 salsalsal 8 8 NS sal sal sal Trichlorofluoromethane NA sal sal 22 46 45 NSsalsal sal 1,1-Dichloroethene sal sal sal sal sal NS sal sal sal Xylenes (Total)10000 Sal sal salsalsal NS sal Sal sal Vinyl chloride 2 Sal sal sal sal sal NS salsalsal Chlorofonm 3 0.1 sal sal salsalsal NS sal sal sal Trichloroethene 5 sal sal sal sal sal NS sal sal sal sal-Selow quantification level MCl-Maximum Contaminant level per EPD Rule Chapter 391-3-5;NA-None available NS-Not sampled;well dry or insufficient recovery to sample well 1 Metals concentrations in mg/l'Organics concentration units in ugn or ppb 3Applies only to Community Water Systems serving 10,000'Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program'Replicate sample of well GWC-13/MW-13 sample'Action level Bold indicates detected concentration is greater than the MCL.Page 5 of 13

\.Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters December 2004 CONSTITUENT MCl WEll SAMPLES GWC-5/MW-5GWS-6/MW-6GWA-7/MW-7GWA-7/MW-7 5 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 Metals'Sarium 2.00 Sal sal sal sal 0.043 NS sal Zinc NA Sal salsalsal 0.044 NS sal Copper 1.3 6 Salsalsal sal sal NS sal Mercurl 0.002 sal sal sal 0.0017 sal NS 0.0004 Chromium (total)0.1 Sal sal sal sal sal NS sal Seryllium 0.004 salsalsalsal sal NS sal Cadmium 0.005 Sal sal salsal NS sal Nickel NA Sal salsalsal sal NS sal lead 0.015 6salsal sal sal sal NS sal Vanadium NA Sal sal salsalsal NS sal Organics 2 1,1-Dichloroethane NA sal sal sal sal 16 NS sal Chlorobenzene 100 sal sal sal sal sal NS sal 1,4-Dicholorbenzene 75 sal sal salsal NS sal Methylene chloride 5 Sal sal sal sal sal NS sal cis-1,2-Dichloroethene 70 salsalsal sal 8 NS sal Trichlorofluoromethane NAsalsal 146 143 81 NS sal 1,1-Dichloroethene 7 salsalsal sal sal NS sal Xylenes (Total)10000 Salsalsalsal sal NS sal Vinyl chloride 2 Salsalsal sal sal NS sal Chloroform 3 0.1 sal salsalsalsal NS sal Trichloroethene 5 sal sal sal sal.: sal NS sal sal-Selow quantification level MCl-Maximum Contaminant level per EPD Rule Chapter 391-3-5;NA-None available NS-Not sampled;well dry or insufficient recovery to sample well 1 Metals concentrations in mg/l 20rganics concentration units in ugll or ppb 3Applies only to Community Water Systems serving 10,000 4Appendix II parameter; NA reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program 5Replicate sample of well GWA-7/MW-7 sample 6 Action level Bold indicates detected concentration is greater than the MCL.Page 6 of 13 Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters June 2004 CONSTITUENT MCl WEll SAMPLES GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7GWC-13/MW-13GWC-13/MW-13 5 GWC-14/MW-14 GWA-15/MW-15 Metals 1 Sarium 2.00 0.040SalSal 0.034 0.034 NS Sal Zinc NA SalSalSal Sal Sal NS Sal Copper 1.3 6 SalSalSal Sal Sal NS Sal Mercurl 0.002 Sal Sal 0.0006 Sal Sal NS Sal Chromium (total)0.1 Sal Sal Sal Sal Sal NS Sal Seryllium 0.004 Sal Sal Sal Sal Sal NS Sal Cadmium 0.005 Sal Sal SalSalSal NS Sal Nickel NASalSalSalSal Sal NS Sal lead 0.015 6SalSalSal sOL Sal NS Sal Vanadium NASalSal Sal Sal Sal NS Sal Organics 2 1,1-Dichloroethane NASalSal Sal 17 19 NS Sal Chlorobenzene 100 Sal SalSalSalSal NS Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal Sal NS Sal Methylene chloride 5 SalSalSal 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 SalSalSalSalSal NS Sal Xylenes (Total)10000 Sal Sal Sal Sal Sal NS Sal Vinyl chloride 2 Sal Sal Sal 2 2 NS Sal Chloroform 3 0.1SalSalSalSal Sal NS Sal Trichloroethene 5SalSal 13SalSal 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 1 Metals concentrations in mg/l 20rganics concentration units inugllor 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 6 Action level Sold indicates detected concentration is greater than the MCL.Page 7 of 13 Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters December 2003 CONSTITUENT MCl WEll SAMPLES 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 0.142SalSal 0.033 0.032 0.189 Sal Zinc NA 0.032 Sal 0.023 Sal Sal 0.127 Sal Copper 1.3 6 0.025SalSal SOL.: Sal 0.026 Sal Mercurl 0.002 Sal Sal Sal Sal Sal 0.01 Sal Chromium (total)0.1 0.028 SalSalSalSal 0.091 Sal Seryllium 0.004 Sal SalSalSal Sal 0.004 Sal Cadmium 0.005 SalSalSalSalSal 0.011 Sal Nickel NASalSalSalSalSal 0.034 Sal lead 0.015 6 SalSalSal Sal Sal 0.015 Sal Vanadium NA SalSalSalSalSal 0.060 Sal Organics 2 1,1-Dichloroethane NA Sal Sal Sal 20 21 10 Sal Chlorobenzene 100 SalSalSal Sal Sal 19 Sal 1,4-Dicholorbenzene 75 Sal Sal Sal Sal Sal 33 Sal Methylene chloride 5 SalSalSalSalSalSal Sal cis-1,2-Dichloroethene 70 Sal Sal Sal 14 14 17 Sal T rich lorofl uoromethane NA Sal Sal 34 102 97 Sal Sal 1 ,1-Dichloroethene 7SalSalSal SOL Sal Sal Sal Xylenes (Total)10000SalSalSalSal Sal 10 Sal Vinyl chloride 2SalSalSalSalSal Sal Sal Chloroform 3 0.1SalSalSal Sal SalSalSal Sal-Selow quantification level MCl-Maximum Contaminant level per EPD Rule Chapter 391-3-5;NA-None available 1Metals concentrations in mg/l 20rganics concentration units in ug/I or ppb 3Applies only to Community Water Systems serving 10,000 4Appendix II parameter 5Replicate sample of well GWC-13/MW-13 sample 6 Action level Bold indicates detected concentration is greater than the MCL.Page 8 of 13 Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters June 2003 CONSTITUENT MCl WEll SAMPLES 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 SalSalSal Copper 1.3 Sal Sal 0.035 Sal Sal Sal Sal Mercurl 0.002 NS NS NS 0.0005 0.0072 Sal Organics 2 1,1-Dichloroethane NASalSal Sal 9 9 10 Sal Chlorobenzene 100SalSalSalSal Sal 7 Sal 1,4-Dicholorbenzene 75SalSalSalSal Sal 16 Sal Methylene chloride 5SalSal Sal Sal Sal Sal Sal cis-1,2-Dichloroethene 70SalSal Sal 6 6 10 Sal Trichlorofluoromethane NASalSal 23 41 47 5 Sal 1 ,1-Dichloroethene 7SalSalSal SalSalSal Sal Xylenes (Total)10000 Sal Sal Sal SalSalSal Sal Vinyl chloride 2 Sal Sal Sal SalSalSalSal Chloroform 3 0.1SalSal Sal Sal Sal Sal Sal Sal-Selow quantification level MCl-Maximum Contaminant level per EPD Rule Chapter 391-3-5;NA-None available 1 Metals concentrations in mg/l 20rganics concentration units in ug/I or ppb 3Applies only to Community Water Systems serving 10,000 4 Appendix II parameter; NS reflects that this parameter was not analyzed for those wells not included in the Assessment Monitoring Program 5Replicate sample of well GWC-13/MW-13 sample Bold indicates detected concentration is greater than the MeL.Page 9 of 13 Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters December 2002 CONSTITUENT Metals 1 MCl WELL SAMPLES GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 Sarium Zinc 2.00 NA 0.018 Sal Sal Sal 0.015 Sal 0.082 0.027 0.106 Sal Sal Sal Organics 2 1,1-Dichloroethane NA Sal Sal Sal 7 16 Sal Chlorobenzene 100 Sal SalSalSal 10 Sal 1 ,4-Dicholorbenzene 75 Sal Sal Sal Sal 39 Sal Methylene chloride 5SalSal SalSalSal Sal cis-1,2-Dichloroethene 70 SalSalSal Sal 19 Sal Trichlorofluoromethane NASalSal 210 391 27 Sal 1,1-Dichloroethene 7 SalSalSal 11 24 Sal Xylenes (Total)10000 SalSalSalSal 21 Sal Vinyl chloride 2SalSalSalSal 4 Sal Chloroform 3 0.1SalSalSal 5 Sal Sal Sal-Selow quantification level MCl-Maximum Contaminant level per EPD Rule Chapter 391-3-5;NA-None available 1Metals concentrations in mg/l 20rganics concentration units in ug/I or ppb 3 Appl ies only to Community Water Systems serving 10,000 Bold indicates detected concentration is greater than the MCL.Page 10 of 13 Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters October 2002 CONSTITUENT MCl WEll SAMPLES GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7GWC-13/MW-13GWC-14/MW-14 GWA-15/MW-15 GWA-15-2/MW-15-2 3 Metals'SariumSalSalSal 0.083 0.064 Sal Sal Zinc Sal Sal Sal 0.027 Sal Sal Sal Organics 2 1,1-Dichloroethane NA Sal Sal Sal 6 17 Sal Sal Chlorobenzene 100SalSalSal Sal 9 Sal Sal 1,4-Dicholorbenzene 75 SalSalSal Sal 35 Sal Sal Methylene chloride 5 SalSalSal Sal 11 Sal Sal cis-1,2-Dichloroethene 70SalSalSal Sal 16 Sal Sal Trichlorofluoromethane NASalSal 221 348 31 Sal Sal 1,1-Dichloroethene 7 Sal SalSalSal Sal Sal Sal Xylenes (Total)10000 Sal SalSalSal 11 Sal Sal Vinyl chloride 2 Sal SalSalSal Sal Sal Sal Sal-Selow quantification level MCl-Maximum Contaminant level per EPD Rule Chapter 391-3-5;NA-None available'Metals concentrations in mg/l 20rganics concentration units in ugll or ppb 3Replicate sample of GWA-15/1MW-15 well Sold indicates detected concentration is greater than the MCL.Page 11 of 13 Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters September 2002 CONSTITUENT MCl WEll SAMPLES 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 1 Sarium 2 0.020 Sal sal 0.085 0.092 0.095 sal Zinc NA Sal sal sal 0.023 sal sal sal Organics 2 1 ,1-Dichloroethane NAsalsal sal 6 21 21 sal Chlorobenzene 100 salsalsalsal 8 8 sal 1 A-Dichlorobenzene 75 Sal salsalsal 37 36 sal Methylene chloride 5 Sal salsalsalsal sal sal cis-1,2-Dichloroethene 70 Sal sal sal sal 19 18 sal Trichlorofluoromethane NAsalsal 32 381 47 48 sal 1,1-Dichloroethene 7salsal sal 8 29 28 sal Xylenes (Total)10000 Sal salsalsal 23 23 sal Vinyl chloride 2 Salsalsalsalsal 3 sal sal-Selow quantification level MCl-Maximum Contaminant level per Georgia EPD Rule Chapter 391-3-5;NA-None available 1Metals concentrations in mg/l 20rganics concentration units in ug/l or ppb 3Replicate sample of GWS-14/1MW-14 well sample Sold indicates detected concentration is greater than the MCL.Page 12 of 13 CONSTITUENT Metals 1 Table 4 (Continued)

Southern Nuclear Operating Company Plant Vogtle Landfill#3 Summary of Detected Parameters July 2002 MCl WEllS 1 GWC-5/MW-5 GWS-6/MW-6 GWA-7/MW-7 GWA-7-2/MW-7-2 3 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 Sarium Zinc 2 NA Sal Sal Sal Sal Sal Sal Sal Sal 0.077 Sal 0.068 Sal Sal Sal Organics 2 1,1-Dichloroethane NASalSal Sal Sal Sal 13 Sal Chi oro benzene 100SalSalSalSal Sal Sal sal 1 ,4-Dichlorobenzene 75SalSal Sal Sal Sal 20 sal Methylene chloride 5 9 6 8 7 8 8 Sal cis-1,2-Dichloroethene 70 sal Sal sal sal Sal 10 Sal Trichlorofluoromethane NA sal Sal 177 192 300 43 Sal 1 ,1-Dichloroethene 7 sal Sal Sal Sal Sal Sal Sal Xylenes (Total)10000 SalSalSal Sal Sal 8 Sal Vinyl chloride 2SalSalSalSalSalSal Sal Sal-Selow quantification level MCl-Maximum Contaminant level per Georgia EPD Rule Chapter 391-3-5;NA-None available 1 Metals concentrations in mg/l 20rganics concentration units in ugll or ppb 3 Rep licate sample of GWA-7/MW-7 well sample Bold indicates detected concentration is greater than the MCL.Page 130f13 FIGURES E6500 E7000 E 7500 E 8500 GROUNDWATER GRADIENT GROUNDWATER PLOW DIRECTION POTE),iTIOMS'TRlC CONTOUR LINE AT 2 Ff LNTERVALS ABANDONED SOILBllRING POTENTIOMETRlC CONTOUR U:-.lE AT 10 FT INTERVALS GROUNDWATER MONITORING WELL GROUNDWATER ELEVATION BOUNDARY l'vIARKER*B-B.LEGEND THE DILXTRA GROUP, INC.1205 JOIINSON[lTIlillY ROAD,#136*446 MAJUETTA., GEORGIA 30068 150 R.XISTING CONTOUR--X--FE."lCE J:vI.M-6-$-JvlETIIANE

>>;:ELL 230_206.02 i..0.02 22B Map pxoduced by BEIAerW Mapping, Peachtree City, GA BEI PROJEct#1010805 DATB OF PHOTOGRAPHY:

B/22/2001 232.69 REV.Groundwater Contour Elevation 2007 N 850\l N 9000 N 9500 N 10000 r, 1\I 251.96 206.74 278.87 229.94 261.33 273.08 232.69 262.88 209.88 26815 22293 256.95 ABANDONED 237.59 158.54 GROUNDWATER ELEVATION AS-BUILT DATA TABLE

WASTE MA."lAGElvlENT 1 UNIT BOUNDARY*1 I 1 I I 10 10 I 1 1 I-'Il-I"§S--_.'

I 1+GWC-18/MW-18

DRY I If I I!i I./.GROUNDWATER TOPOl'CASING E8000 E 7500 238.32 227.95 234.39 240.86 K 9500 N 8500 N9000 N10000 E N BOLT TOTAL EI.DEl'THEI.

ft msl 9631.6193 7826.0659 257.56 9361.2699 7341.2712 272.99 9127.9166 6980.2829 268.32 8809.0679 7253.0077 257.95 8808.1725 7841.8269 259.39 9248.4436 8003.8302 270.86 ApPENDIXA-HYDRAULIC GRADIENT CALCULATION SHEETS Plant Vogtle Landfill#3 Gradient Calculation (based on three-point problem)June 2007 Monitoring Event Well Designation GWC-5/MW-5 GWB-6/MW-6 GWA-7/MW-7 GWC-13/MW-13 GWC-14/MW-14 GWA-15/MW-15 GWB-16/MW-16 GWC-17/MW-17 GWC-18/MW-18 Water Table Elevation 206.74 229.94 228.38 232.69 209.88 222.93 158.54 DRY DRY Northing 9604.30 9432.48 8826.22 9242.72 8960.64 8975.71 9912.48 8553.09 8938.05 Easting 7999.33 7473.25 7657.89 7995.86 7999.10 6886.73 7948.95 8135.59 8238.63 Gradient Calculation from fitting a plane to three points a x,+by,+cz,+d=0 a X2+b Y2+CZ2+d=0ax 3+b Y3+CZ3+d=0 where (X;,Yi)are the coordinates of the well and zi is the head, i=1,2,3 The gradient is calculated from the square root of (a 2+b 2)Southwest Gradient Wells of Interest=(GWB-6, GWA-7&GWA-15)(High-Mid-Low) x Y z GWB-6/MW-6 9432.48 7473.25 229.94 GWA-7/MW-7 8826.22 7657.89 228.38 GWA-15/MW-15 8975.71 6886.73 222.93 7473.25 229.94 1 I" a=7657.89 228.38 1-2209.298 6886.73 222.93 1 9432.48 229.94 1 I" b=8826.22 228.38 1 3537,3214 8975.71 222.93 1 9432.48 7473.25 1 c=8826.22 7657.891=439921.63 8975.71 6886.73 1 9432.48 7473.25 229.94 1=d=8826.22 7657.89 228.38 53881137 8975.71 6886.73 222.93 zO=-122.4 789443 mx=0.005022025 my=-0.008040799 ISouthwest Gradient-0.009 1 Page 1 of 3 Plant Vogtle Landfill#3 Gradient Calculation (based on three-point problem)\Northeast Gradient Wells of Interest=(GWC-16, GWB-6&GWC-5)(High-Mid-Low) x Y z GWB-16/MW-16 9242.72 7995.86 158.54 GWB-6/MW-6 9432.48 7473.25 229.94 GWC-5/MW-5 9604.30 7999.33 206.74 7995.86 158.54 1 a=7473.25 229.941=-25437.56 7999.33 206.74 1 9242.72 158.54 1 b=9432.48 229.941=-16670.38 9604.30 206.74 1 9242.72 7995.86 1 c=9432.48 7473.251=189623.79 9604.30 7999.33 1 9242.72 7995.86 158.54 1=d=9432.48 7473.25 229.94-71755264 9604.30 7999.33 206.74 zO=378.4085517 mx=0.134147513 my=0.087912914 INortheast Gradient=0.16 1 Page 2 of 3 Plant Vogtle Landfill#3 Gradient Calculation (based on three-point problem)Southeast Gradient Wells of Interest=(GWC-13, GWA-7&GWC-14)(High-Mid-Low) x Y z GWC-13/MW-13 9242.72 7995.86 232.69 GWA-7/MW-7 8826.22 7657.89 228.38 GWC-14/MW-14 8960.64 7999.10 209.88 7995.86 232.69 1 1=a=7657.89 228.38 1 7723.0601 7999.10 209.88 1 9242.72 232.69 1 b=8826.22 228.38 1=8284:6002 8960.64 209.88 1 9242.72 7995.86 1 1=c=8826.22 7657.89 1-96684.04 8960.64 7999.10 1 9242.72 7995.86 232.69 1=d=8826.22 7657.89 228.38-17357830 8960.64 7999.10 209.88 zO=-179.5314971 mx=0.079879371 my=0.085687363 ISoutheast Gradient=0.12 1 Page 3 of 3 ApPENDIXB-LABORATORY ANALYTICAL REPORTS JUNE 2007 Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Laboratory Report ACL Project#: 53572 Client Proj#: Vogtle LF#3 Prepared For: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Attention:

Mr.Kurt Batsel Report Date: 07/12/2007 This report contains 72 pages.(including this cover page and chain of custody)=al Director Advanced Chemistry Labs is a woman owned small business concern.If you have any questions concerning this report, please do not hesitate to call us at (770)409-1444.This report may not be reproduced, except in full, without the written permission of ACL (Advanced Chemistry Labs, Inc).ACL certifies that the folloWing analytical results meet all the requirements of NELAC.ACL is accredited by the National Environmental Laboratory Accreditation Program (NELAP).ACL maintains the following certifications:

NELAC (E87212), South Carolina (98009001), North Carolina (362), Florida (E87212), USDA Soil Import License (S-36503).

Page 1 of 72 I ACL I ADVANCED CHEMISTR Y LABS, INC Phone: (770)

Fax: (770)409-1844 P.O.Box 88610, Atlanta, GA 30356 e-mail: acl@acl-Iabs.net Data Qualifier Codes Code A B BQL DW E H J PQL TIC***Description Value reported is the mean of two or more determinations; Indicates the analyte was detected in the sample and method blank;Below practical quantitation limit;Results reported on a dry-weight basis (ex: mg/kg,dw);

Estimated value: (i)sample received or analyzed beyond the accepted holding time;(ii)sample received at improper temperature;(iii)the continuing calibration for an analyte did not meet qc criteria;Estimated value;result higher than the highest calibration standard;Reported value is between the method detection limit and the practical quantitation limit;Practical quantitation limit;Tentatively identified compound;Not analyzed due to interferences; Upon client request, a statement of the test result estimated uncertainty can be provided.NOTE: Unless otherwise noted, all results are reported on an as received basis.Page 2 of 72 IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

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

07/12/2007 V.O.(50308/82608)

-Appendix I Sample 10: GWC-5/MW-5 Matrix: Date Sampled: Date Extracted:

Date Analyzed: ACL Sample#: 255918 Units: IJg/L Analyst: Water 06/05/2007 06/14/2007 ME Analyte Acetone Acrylon itri Ie Senzene Sromochloromethane Sromodichloromethane Sromoform Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane

Chloroform 1,2-Dibromo-3-chloropropane Dibromochloromethane 1,2-Dibromoethane trans-1,4-Dichloro-2-butene 1,2-Dichlorobenzene 1 A-Dichlorobenzene 1,1-Dichloroethane

1,2-Dichloroethane 1 ,1-Dichloroethene cis-1 ,2-Dichloroethene trans-1,2-Dichloroethene 1,2-Dichloropropane cis-1,3-Dichloropropene trans-1,3-Dichloropropene Ethylbenzene 2-Hexanone Methyl bromide Methyl chloride Methyl ethyl ketone I iodide Methylene bromide Methylene chloride Result Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal PQL 100 50 5 5 5 5 5 5 5 10 5 20 5 5 10 5 5 5 5 5 5 5 5 5 5 5 50 10 10 100 5 50 5 5 Analyte Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene Toluene 1,1,1-Trichloroethane

1,1,2-Trichloroethane Trichloroethene Trichlorof1uoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride m,p-Xylene o-Xylene Result Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Page 3 of 72 PQL 5 5 5 5 5 5 5 5 5 5 50 2 10 5--------------

Phone: (770)409*1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtre LF#3 53572 06/08/2007 07/12/2007 ACL Sample#: 255918 Units: IJg/L Analyte Result PQL 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Sample 10: Miscellaneous Organics (8011)-Appendix II GWC-5/MW-5 Matrix: Water Date Sampled: 06/05/2007 Date Extracted:

0611112007 Date Analyzed: 06/25/2007 Analyst: MA Page 4 of 72 ADVANCED CHEMISTRY LABS, INC.IACLI Phone: (770)

-.

Fax: (770)409-1844 P.O.Box 88610*Atlanta, GA 30356 a-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Appendix I Metals (60108/7841/7041) 06/13/2007 SW Water 06/05/2007 GWC-5/MW-5 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Sample 10: ACL Sample#: 255918 Units: mg/L Analvte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Barium0.0350.020 Beryllium Sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020 l-obalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010 Nickel 0.041 0.020 Selenium Sal 0.040 Silver Sal 0.010 Thallium Sal 0.002 Vanadium Sal 0.050 Zinc 0.193 0.020 Page 5 of 72 I A CL I AnV ANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409*1844 P.O.BOlC 88610*Atlanta.GA 30356 e-mail: acl@acl-labs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj#: Vogtle IF#3 1205 Johnson Ferry Rd.ACL Project#: 53572 Suite 136*446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr.Kurt Batsel Date Sample 10 ACL#Analyte Matrix Result PQL Units Analyzed GWC-5/MW-5 255918 Mercury (74 70A)Water Sal 0.0005 mg/l 06/15/2007 Page 6 of 72------_._.--._--

ADVANCED CHEMISTRY LABS, INC.IACLI Phone: (770) Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 v.o.(50308/82608)

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

Date Analyzed: 06/14/2007 ACl Sample#: 255919 Units: IJg/L Analyst:, ME Analvte Result PQl Analvte Result PQl Acetone Sal 100 Styrene Sal 5 Acrylonitrile Sal 50 1,1,1,2-Tetrachloroethane Sal 5 Senzene Sal 5 1,1,2,2-Tetrachloroethane Sal 5 Sromochloromethane Sal 5 Tetrachloroethene Sal 5 Sromodichloromethane Sal 5 Toluene Sal 5 Csromoform Sal 5 1,1,1-Trichloroethane Sal 5'{Carbon disulfide Sal 5 1,1,2-Trichloroethane Sal 5.,.*.*....*Carbon tetrachloride Sal 5 Trichloroethene Sal 5 Chlorobenzene Sal 5 Trichlorofluoromethane Sal 5 Chloroethane Sal 10 1,2,3-Trichloropropane Sal 5 Chloroform Sal 5 Vinyl acetate Sal 50 1,2-Dibromo-3-chloropropane Sal 20 Vinyl chloride Sal 2 Dibromochloromethane Sal 5 m,p-Xylene Sal 10 1,2-Dibromoethane Sal 5 o-Xylene Sal 5 trans-1 A-Dichloro-2-butene Sal 10 1,2-Dichlorobenzene Sal 5 1 A-Dichlorobenzene Sal 5 1,1-Dichloroethane Sal 5 1,2-Dichloroethane Sal 5 1,1-Dichloroethene Sal 5 cis-1,2-Dichloroethene Sal 5 trans-1,2-Dichloroethene Sal 5 1,2-Dichloropropane Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene Sal 5 Ethylbenzene Sal 5 2-Hexanone Sal 50 Methyl bromide Sal 10 Methyl chloride Sal 10 Methyl ethyl ketone Sal 100 fVIethyl iodide SOL 5 , Methyl-2-pentanone Sal 50 Methylene bromide SOL 5 Methylene chloride Sal 5 Page 7 of 72

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

Phone: (770)409*1444 Fax: (770)409*1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/0812007 07/12/2007 ACL Sample#: 255919 Units: J,lg/L Analyte Result PQL 1,2-Dibromo-3-chloropropane SQl 0.20 1,2-Dibromoethane SQl 0.05 Sample 10: Miscellaneous Organics (8011)-Appendix II GWB-6/MW-6 Matrix: Water Date Sampled: 06/05/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/25/2007 Analyst: MA Page 8 of 72-------------

Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl.labs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta.GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle IF#3 53572 06/08/2007 07/12/2007 ACl Sample#: 255919 Units: mg/L Analvte Result PQl Antimony BOl 0.006 Arsenic BOl 0.010 Barium BOl 0.020 Seryllium BOl 0.004 Cadmium Sal 0.005 Chromium Sal 0.020;Cobalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010 Nickel 0.041 0.020 Selenium BOl 0.040 Silver BOl 0.010 Thallium Sal 0.002 Vanadium Sal 0.050 Zinc 0.528 0.020 Sample 10: Appendix I Metals (60108/7841/7041)

GWB-6/MW-6 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Water 06/05/2007 06/13/2007 SW Page 9 of 72 IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

-.

Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: ac\@acl-Iabs.net www.advancedchemistrylabs.com The Dextra Group 1205 Johnson Ferry Rd.Suite 136.-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Vogtle LF#3 53572 06/08/2007 07/1212007255919 Analyte Mercury (7470A)Client Proj#: ACL Project#: Date Received: Date Reported: Matrix Water Result Bal PQL 0.0005 Units mglL Page 10 of 72 Date Analyzed 06/15/2007

\i Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 V.C.(50308/82608)

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

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

ADVANCED CHEMISTRY LABS, INC.IACLI Phone: (770)

FalC: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Acid Extractables (8270C)-Appendix II Water 06/0412007 06/11/2007 0611412007 RB GWA-7/MW-7 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Sample 10: ACL Sample#: 255920 Units: IJg/L Analyte Result PQL 4-Chloro-3-methylphenol Sal 20 2-Chlorophenol Sal 10 m&p-Cresol Sal 10 i!Ii i o-Cresol Sal 10 I 2,4-Dich lorophenol Sal 10 2,6-Dichlorophenol Sal 10 2,4-Dimethylphenol Sal 10 4,6-Dinitro-2-methylphenol Sal 50 2,4-Dinitrophenol Sal 50 2-Nitrophenol Sal 10 4-Nitrophenol Sal 50 Pentachlorophenol Sal 50 Phenol Sal 10 2,3,4.6-T etrach lorophenol Sal 10 2,4,5-Trichlorophenol Sal 10 2,4,6-Trichlorophenol Sal 10 Page 12 of 72 Phone: (770)409*1444 Fax: (770)409*1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwller Road*Suite 100*Atlanta, GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Base Neutral Extractables (8270C)-Appendix II Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/14/2007 ACL Sample#: 255920 Units: IJg/L Analyst: RB Analyte Result PQL Analvte Result PQL Acenaphthene Sal 10 Dimethyl phthalate Sal 10 Acenaphthylene Sal 10 p-(Dimethylamino)azobenzene Sal 10 Acetophenone Sal 10 7, 12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene Sal 20 3,3'-Dimethylbenzidine BOl 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene BOl 20 Anthracene Sal 10 2A-Din itrotoluene Sal 10 enzo(a)anth racene Sal 10 2,6-Dinitrotoluene Sal 10 Benzo(a)pyrene Sal 10 Diphenylamine Sal 10 Senzo(b)fluoranthene Sal 10 Disulfoton Sal 10 Benzo(g,h ,i)perylene Sal 10 Ethyl methanesulfonate Sal 20 Senzo(k)fluoranthene Sal 10 Famphur BOl 20 Benzyl alcohol Sal 20 Fluoranthene Sal 10 Sis(2-ehloroethoxy)methane Sal 10 Fluorene Sal 10 B is(2-ch loroethyl)ether Sal 10 Hexachlorobenzene Sal 10 Sis(2-chloroisopropyl)ether Sal 10 Hexachlorobutadiene Sal 10 Sis(2-ethylhexyl)phthalate Sal 10 Hexachlorocyclopentadiene Sal 10 4-Bromophenyl phenyl ether Sal 10 Hexachloroethane BOl 10 Sutyl benzyl phthalate Sal 10 Hexachloropropene Sal 10 p-Chloroaniline Sal 20 Indeno(1,2,3-cc1)pyrene Sal 10 Chlorobenzilate Sal 10 Isodrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether Sal 10 Isosafrole Sal 10 Chrysene Sal 10 Kepone Sal 20 Di-n-butyl phthalate Sal 10 Methapyrilene BOl 100 Di-n-octyl phthalate Sal 10 Methyl methanesulfonate BOl 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a, h)anth racene Sal 10 3-Methylcholanthrene Sal 10 D ibenzofu ran Sal 10 2-Methylnaphthalene Sal 10 1,2-Dichlorobenzene Sal 10 Naphthalene Sal 10 1,3-Dichlorobenzene Sal 10 1 A-Naphthoquinone Sal 10 1,4-Dichlorobenzene Sal 10 1-Naphthylamine Sal 10 3,3'-Dichlorobenzidine Sal 20 2-Naphthylamine Sal 10 Diethyl phthalate Sal 10 5-Nitro-o-toluidine Sal 10 Dimethoate Sal 10 2-Nitroaniline Sal 50 Page 13 of 72***_.__'0_______***_'0__*___-.._**

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

Fax: (710)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client ProJ#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Base Neutral Extractables (8270C)-Appendix II ACL Sample#: 255920 Units: IJg/L Analyte Result PQl 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine Sal 10 N-Nitro sod iethylam ine Sal 20 N-Nitrosodimethylamine Sal 10 N-Nitrosodiphenylamine Sal 10 N-Nitrosodipropylamine Sal 10 N-Nitrosomethylethylamine Sal 10 N-Nitrosopiperidine Sal 20 N-Nitrosopyrrolidine Sal 40 Parathion Sal 20 Pentachlorobenzene Sal 10 Pentachloronitrobenzene Sal 20 Phenacetin Sal 20 Phenanthrene Sal 10 p-Phenylened iamine Sal 10 Phorate Sal 10 Pronamide Sal 10 Pyrene Sal 10 Safrole Sal 10 1,2,4,5-Tetrachlorobenzene Sal 10 Thionazin Sal 20 0-Toluidine Sal 10 1,2,4-Trichlorobenzene Sal 10 o,o,o-Triethyl phosphorothioate Sal 50 1,3,5-Trinitrobenzene Sal 10 Sample ID: GWA-7/MW-7 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/14/2007 Analyst: RB Page 14 of 72 IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

FalC: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemislrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle IF#3 53572 06/08/2007 07/12/2007 Pesticides/PCBs (8081A18082)*

Appendix II GWA-7/MW-7 Sample 10: ACL Sample#: 255920 Analyte Aldrin Arochlor-1016 Arochlor-1221 Arochlor-1232 Arochlor-1242 Arochlor-1248 C;:, Arochlor-1254

.Arochlor-1260 a-SHC b-SHC d-SHC g-SHC Chlordane 4,4'-000 4,4'-00E 4,4'-00T Oieldrin Endosulfan I Endosulfan II Endosulfan sulfate Endrin Endrin aldehyde Heptachlor Heptachlor epoxide Methoxychlor Toxaphene Units: Result Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal PQL 0.05 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.05 0.05 0.05 0.05 0.10 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 2.00 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Water 06/04/2007 06/11/2007 06/20/2007 AM Page 15 of 72 IACL I ADVANCED CHEMISTRY LABS, INC.Phone:

-.

Fax: (770l 409-1844 P.O.Box 88610*AUanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Chlorinated Herbicides (8151A)-Appendix II ACL Sample#: 255920 Units: jJg/L Analyte Result PQL 2,4-0 Sal 1.0 Oinoseb Sal 1.0 2,4,5-TP (Silvex)Sal 1.0 2,4,5-T Sal 1.0 Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/15/2007 Analyst: AM Page 16 of 72_.-..__._....

---

IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

-.

Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Miscellaneous Organics (8011)-Appendix II ACL Sample#: 255920 Units: 1J9/L Analyte Result PQL 1,2-Dibromo-3-chloropropane SQL 0.20 1,2-Dibromoethane BQL 0.05 Sample 10: GWA-7/MW-7 Matrix: Water Date Sampled: 06/0412007 Date Extracted:

06/11/2007 Date Analyzed: 06/25/2007 Analyst: MA Page 17 of 72 Phone: (770)409*1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwller Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 ACL Sample#: 255920 Units: j./g/L Analyte Result PQL Antimony BOl 0.006 Arsenic BOl 0.010 Barium0.2200.020 Beryllium 0.004 0.004 Cadmium BOl 0.005 Chromium 0.063 0.020 Cobalt BOl 0.050 Copper BOl 0.020 lead 0.031 0.010 Mercury 0.0026 0.0005 Nickel 0.036 0.020 Selenium BOl 0.040 Silver BOl 0.010 Thallium BOl 0.002 Tin BOl 0.025 Vanadium 0.054 0.050 Zinc 0.219 0.020 Sample 10: Appendix II Metals (6010B/7470Al7841/7041)

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

Date Analyzed: 06/13/2007 Analyst: SW/JR Page 18 of 72 Phone: (770)409-1444 Fax: (770)409*1844 e-mail: acl@acl-labs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwller Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: The Dextra Group Client Proj#: Vogtle IF#3 1205 Johnson Ferry Rd.ACL Project#: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr.Kurt Satsel Q!!!..Sample 10 ACL#Analvte Matrix Result PQL Units Analyzed GWA-7/MW-7 255920 Cyanide (9012A)Water SOL 0.020 mg/l 06/13/2007 GWA-7/MW-7 255920 Sulfide (9034)Water Sal 1.0 mg/l 06/1212007 Page 19 of 72 I A CL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 v.o.(5030B/8260B)

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

Date Analyzed: 06/14/2007 ACL Sample#: 255921 Units: IJg/L Analyst: ME Analyte Result PQL Analvte Result PQl Acetone Sal 100 Ethyl methacrylate Sal 10 Acetonitrile Sal 100 Ethylbenzene Sal 5 Acrolein Sal 100 2-Hexanone Sal 50 Acrylonitrile Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile Sal 100 Senzene Sal 5 Methyl bromide Sal 10 romochloromethane Sal 5 Methyl chloride Sal 10 Sromodichloromethane Sal 5 Methyl ethyl ketone Sal 100 Sromoform Sal 5 Methyl iodide Sal 5 Carbon disulfide Sal 5 Methyl methacrylate Sal 30 Carbon tetrachloride Sal 5 4-Methyl-2-pentanone Sal 50 Chlorobenzene Sal 5 Methylene bromide Sal 5 Chloroethane Sal 10 Methylene chloride Sal 5 Chloroform Sal 5 Naphthalene Sal 5 Chloroprene Sal 20 Propionitrile Sal 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane Sal 5 1,1,1,2-Tetrachloroethane Sal 5 1,2-Dibromoethane Sal 5 1,1,2,2-Tetrachloroethane Sal 5 trans-1 A-Dichloro-2-butene Sal 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene Sal 5 Toluene Sal 5 1,3-Dichlorobenzene Sal 51, 1, 1-Trichloroethane Sal 5 1 A-Dichlorobenzene Sal 5 1,1,2-Trichloroethane Sal 5 Dichlorodifluoromethane Sal5T richloroethene Sal 5 1,1-Dichloroethane Sal 5 Trichlorofluoromethane 109 5 1,2-Dichloroethane Sal 5 1,2,3-Trichloropropane Sal 5 1,1-Dichloroethene Sal 5 Vinyl acetate Sal 50 cis-1,2-Dichloroethene Sal 5 Vinyl chloride Sal 2 trans-1,2-Dichloroethene Sal 5 m,p-Xylene Sal 10 1,2-Dichloropropane Sal 5 o-Xylene Sal 5 1,3-Dichloropropane Sal 5 ,

Sal 15 1-Dichloropropene Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1 ,3-Dichloropropene Sal 5 Page 20 of 72._****_____e..___**.*__*__._.._------_.-._-

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

Fax: (770)409-1844 P.O.Box 88610*AUanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Acid Extractables (8270C)-Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Date Sampled: Date Extracted:

Date Analyzed: ACL Sample#: 255921 Units: IJg/L Analyst: Water 06/04/2007 06/11/2007 06/14/2007 RB Analvte 4-C hlo ro-3-methyl phenol 2-Chlorophenol m&p-Cresol o-Cresol 2,4-Dichlorophenol 2,6-Dichlorophenol 2,4-Dinitrophenol 2-Nitrophenol 4-N itrophenol Pentachlorophenol Phenol 2,3,4,6-T etrachlorophenol 2,4,5-Trichlorophenol 2,4,6-Trichlorophenol Result BOl BOl BOl BOl BOl BOl BOl BOl BOl BOl BOl BOl BOl BOl BOl BOl PQL 20 10 10 10 10 10 10 50 50 10 50 50 10 10 10 10 Page 21 of 72 Phone: (770)409-1444 Fax: (770)409-1844 a-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Base Neutral Extractables (8270C)-Appendix II Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/14/2007 ACL Sample#: 255921 Units: ,",gIL Analyst: RB Analyte Result PQL Analvte Result PQl Acenaphthene BOl 10 Dimethyl phthalate BOl 10 Acenaphthylene BOl 10 p-(Dimethylamino)azobenzene BOl 10 Acetophenone BOl 10 7,12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene BOl 20 3,3'-Dimethylbenzidine Sal 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene Sal 20 Anthracene Sal 10 2,4-Dinitrotoluene BOl 10 enzo(a)anthracene BOl 10 2,6-Dinitrotoluene Sal 10 Benzo(a)pyrene BOl 10 Diphenylamine Sal 10 Benzo(b)fluoranthene Sal 10 Disulfoton Sal 10 Benzo(g,h,i)perylene Sal 10 Ethyl methanesulfonate BOl 20 Benzo(k)fluoranthene Sal 10 Famphur BOl 20 Benzyl alcohol Sal 20 Fluoranthene BOl 10 Bis(2-chloroethoxy)methane BOl 10 Fluorene Sal 10 Bis(2-chloroethyl)ether BOl 10 Hexachlorobenzene Sal 10 Bis(2-ehloroisopropyl)ether BOl 10 Hexachlorobutadiene BOl 10 Bis(2-ethylhexyl)phthalate BOl 10 Hexachlorocyclopentadiene BOl 10 4-Bromophenyl phenyl ether BOl 10 Hexachloroethane BOl 10 Butyl benzyl phthalate BOl 10 Hexachloropropene Sal 10 p-Chloroaniline BOl 20 Indeno(1,2,3-cd)pyrene BOl 10 Chlorobenzilate Sal 10 Isodrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether BOl 10 Isosafrole Sal 10 Chrysene BOl 10 Kepone Sal 20 Di-n-butyl phthalate Sal 10 Methapyrilene BOl 100 Di-n-octyl phthalate BOl 10 Methyl methanesulfonate Sal 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a,h)anthracene Sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran Sal 10 2-Methylnaphthalene BOl 10 1,2-Dichlorobenzene Sal 10 Naphthalene Sal 10 1,3-Dichlorobenzene Sal 10 1,4-Naphthoquinone Sal 10 1f"l1 A-Dichlorobenzene Sal 10 1-Naphthylamine Sal 10 Sal 20 2-Naphthylamine Sal 10 Diethyl phthalate BOl 10 5-Nitro-o-toluidine Sal 10 Dimethoate Sal 10 2-Nitroaniline Sal 50 Page 22 of 72---_._---_...--

Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.80x 88610*Atlanta.GA 30356 www.advancedchemistTylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 ACL Sample#: 255921 Units: IJg/L Analvte Result PQL 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine Sal 10 N-Nitrosodiethylamine Sal 20 N-Nitrosodimethylamine Sal 10 t.l-Nitrosodiphenylamine Sal 10 N-Nitrosodipropylamine Sal 10 N-Nitrosomethylethylamine Sal 10 N-Nitrosopiperidine Sal 20 N-Nitrosopyrrolidine Sal 40 Parathion Sal 20 Pentachlorobenzene Sal 10 Pentachloronitrobenzene Sal 20 Phenacetin Sal 20 Phenanthrene Sal 10 p-Phenylenediamine Sal 10 Phorate Sal 10 Pronamide Sal 10 Pyrene Sal 10 Safrole Sal 10 1,2,4,5-Tetrachlorobenzene Sal 10 Thionazin Sal 20 o-Toluidine Sal 10 1,2,4-Trichlorobenzene Sal 10 0,0,0-Triethyl phosphorothioate Sal 50 1,3,5-Trinitrobenzene Sal 10 Sample 10: Base Neutral Extractables (8270C)-Appendix II GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/14/2007 Analyst: RB Page 23 of 72 Phone: (770)409-1444 Fax: (770)409*1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.BOle: 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Pesticides/PCBs (8081A18082)

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

06/11/2007 Date Analyzed: 06/20/2007 ACl Sample#: 255921 Units: Analyst: AM Analyte Aldrin Arochlor-1016 Arochlor-1221 Arochlor-1232 Arochlor-1242

",Arochlor-1248 Qrochlor-1254 Arochlor-1260 a-SHC b-SHC d-SHC g-SHC Chlordane 4,4'-000 4,4'*00E 4,4'-00T Dieldrin Endosulfan I Endosulfan II Endosulfan sulfate Endrin Endrin aldehyde Heptachlor

Heptachlor epoxide Methoxychlor Toxaphene Result Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Pgl 0.05 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.05 0.05 0.05 0.05 0.10 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 2.00 Page 24 of 72 ADVANCED CHEMISTRY LABS, INC.IACLI Phone: (770)

-.

\Fax: (770)409-1844 P.O.Box 88610*AUanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Chlorinated Herbicides (8151A)-Appendix II ACL Sample#: 255921 Units: IJg/L Analyte Result PQl 2,4-0 Sal 1.0 Oinoseb Sal 1.0 2,4,5-TP (Silvex)Sal 1.0 2,4,5-T Sal 1.0 Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/1112007 Date Analyzed: 06/15/2007 Analyst: AM Page 25 of 72 IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)4........

....3....

....Su-ite--1....

G......3....6....0-Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Miscellaneous Organics (8011)*Appendix II ACl Sample#: 255921 Units: J,lg/L Analyte Result PQl 1,2-Dibromo-3-chloropropane Sal 0.20 1,2-Dibromoethane Sal 0.05 Sample 10: GWA-7/MW-7 Dup Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/25/2007 Analyst: MA Page 26 of 72 I A CL......

.....E_'M._I.....S_T_'R Y_L_AB_S....,_IN__C.Phone: (770)409-1444 3039 Amwiler Road*Suite 100*Atlanta.GA 30360 Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Appendix II Metals (6010B/7470AJ7841/7041) 06/13/2007 SW/JR Water 06/04/2007 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: GWA-7/MW-7 Dup Sample 10: ACL Sample#: 255921 Units: IJg/L Analyte Result PQL Antimony SOL 0.006 Arsenic SOL 0.010 Barium 0.207 0.020 Beryllium 0.004 0.004 Cadmium SOL 0.005 Chromium 0.063 0.020 Cobalt SOL 0.050 Copper SOL 0.020 Lead 0.030 0.010 Mercury 0.0047 0.0005 Nickel 0.034 0.020 Selenium SOL 0.040 Silver SOL 0.010 Thallium SOL 0.002 Tin SOL 0.025 Vanadium 0.051 0.050 Zinc 0.211 0.020 Page 27 of 72

)I A CL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlslrylabs.com Client: The Dextra Group Client Proj#: Vogtle IF#3 1205 Johnson Ferry Rd.ACL Project#: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta.GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr.Kurt Satsel Q!1!.Sample 10 ACl#Analyte Matrix Result PQL Units Analyzed GWA-7/MW-7 Dup 255921 Cyanide (9012A)Water Sal 0.020 mg/l 06/13/2007 GWA-7/MW-7 Dup 255921 Sulfide (9034)Water Sal 1.0 mg/L 06/12/2007 Page 28 of 72 ADVANCED CHEMISTRY LABS, INC.IACLI Phone: (770)

....G....A-S...O-S-eo-Fax: (770)409-1844 P.O.Box 88610*Atlanta, GA SOS56 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Farry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsal Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 v.o.(50308/82608)

-Appendix II Sample ID: GWC-13/MW-13 Matrix: Water Date Sampled: 06/0412007 Date Extracted:

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

ADVANCED CHEMISTRY LABS, INC.IACLI Phone: (770)

Fal<: (770)409-1844 P.O.801<88610*Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle IF#3 53572 06/08/2007 0711212007 Acid Extractables (8270C)-Appendix II Sample 10: GWC-13/MW-13 Matrix: Date Sampled: Date Extracted:

Date Analyzed: ACl Sample#: 255922 Units: jJg/L Analyst: Water 06/04/2007 06111/2007 06/15/2007 RB Analyte 4-Chloro-3-methylphenol 2-Chlorophenolm&p-Cresol o-Cresol 2,4-Dichlorophenol 2,6-Dichlorophenol

,4-Dimethylphenol 4,6-Dinitro-2-methylphenol 2,4-Dinitrophenol 2-Nitrophenol 4-Nitrophenol Pentachlorophenol Phenol.2,3,4,6-Tetrachlorophenol 2,4 ,5-Trichlorophenol 2,4,6-Trichlorophenol Result Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal BOl BOl PQl 20 10 10 10 10 10 10 50 50 10 50 50 10 10 10 10 Page 30 of 72 I ACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409*1844 P.O.Box 88610*AUanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta.GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Base Neutral Extractables (8270C)-Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/15/2007 ACL Sample#: 255922 Units: 1J9/L Analyst: RB Analyte Result PQL Analyte Result PQL Acenaphthene Sal 10 Dimethyl phthalate Sal 10 Acenaphthylene Sal 10 p-(Dimethylamino)azobenzene Sal 10 Acetophenone Sal 10 7,12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene Sal 20 3.3'-Dimethylbenzidine Sal 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene Sal 20 Anthracene Sal 10 2,4-Dinitrotoluene Sal 10 Senzo(a)anthracene Sal 10 2.6-Dinitrotoluene Sal 10 Senzo(a)pyrene Sal 10 Diphenylamine Sal 10 Senzo(b)fluoranthene Sal 10 Disulfoton Sal 10 Senzo(g, h,i)perylene Sal 10 Ethyl methanesulfonate Sal 20 Senzo(k)fluoranthene Sal 10 Famphur Sal 20 Senzyl alcohol Sal 20 Fluoranthene Sal 10 Sis(2-chloroethoxy)methane Sal 10 Fluorene Sal 10 Bis(2-chloroethyl)ether Sal 10 Hexachlorobenzene Sal 10 Sis(2-chloroisopropyl)ether Sal 10 Hexachlorobutadiene Sal 10 Sis(2-ethylhexyl)phthalate Sal 10 Hexachlorocyclopentadiene Sal 10 4-Sromophenyl phenyl ether Sal 10 Hexachloroethane Sal 10 Sutyl benzyl phthalate Sal 10 Hexachloropropene Sal 10 p-Chloroaniline Sal 20 Indeno(1,2,3-cd)pyrene Sal 10 Chlorobenzilate Sal 10 Isodrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether Sal 10 Isosafrole Sal 10 Chrysene Sal 10 Kepone Sal 20 Di-n-butyl phthalate Sal 10 Methapyrilene Sal 100 Di-n-octyl phthalate Sal 10 Methyl methanesulfonate Sal 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a, h)anthracene Sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran Sal 10 2-Methylnaphthalene Sal 10 1,2-Dichlorobenzene Sal 10 Naphthalene Sal 10 1,3-Dichlorobenzene Sal 10 1 A-Naphthoquinone Sal 10

,4-Dichlorobenzene Sal 10 1-Naphthylamine Sal 10 Sal 20 2-Naphthylamine Sal 10 Diethyl phthalate Sal 10 5-Nitro-o-toluidine Sal 10 Dimethoate Sal 10 2-Nitroaniline Sal 50 Page 31 of 72 I ACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409-1844 P.O.Box 88610*Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta.GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Base Neutral Extractables (8270C)-Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/15/2007 ACl Sample#: 255922 Units: Analyst: RB Analyte 3-Nitroaniline 4-Nitroaniline Nitrobenzene N-Nitroso-di-n-butylamine N-Nitrosodiethylamine

N-Nitrosodimethylamine C Cc,'\,N-Nitrosodiphenylamine

.,'N-Nitrosodipropylamine N-Nitrosomethylethylamine N-Nitrosopiperidine N-N itrosopyrrolidine Parathion Pentachlorobenzene

Pentachloronitrobenzene

Phenacetin Phenanthrene p-Phenylenediamine Phorate Pronamide Pyrene Safrole 1,2,4,5-Tetrachlorobenzene Thionazin o-Toluidine 1,2,4-Trichlorobenzene o,o,o-Triethyl phosphorothioate 1,3,5-Trinitrobenzene Result Sal Sal Sal Sal Sal Sal Sal Sal 80l Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal Sal 80l PQl 50 20 10 10 20 10 10 10 10 20 40 20 10 20 20 10 10 10 10 10 10 10 20 10 10 50 10 Page 32 of 72 Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 ACL Sample#: 255922 Units: Analvte Result PQl Aldrin Sal 0.05 Arochlor-1 016 Sal 0.50 Aroch lor-1221 Sal 0.50 Arochlor-1232 Sal 0.50 Arochlor-1242 Sal 0.50 Arochlor-1248 Sal 0.50 f',roch lor-1254 Sal 0.50 Arochlor-1260 Sal 0.50 a-SHC Sal 0.05 b-SHC Sal 0.05 d-SHC Sal 0.05 g-SHC Sal 0.05 Chlordane Sal 0.10 4,4'-00D Sal 0.05 4,4'-DOE Sal 0.05 4,4'-ODT Sal 0.05 Dieldrin Sal 0.05 Endosulfan I Sal 0.05 Endosulfan II Sal 0.05 Endosulfan sulfate Sal 0.05 Endrin Sal 0.05 Endrin aldehyde Sal 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor Sal 0.05 Toxaphene Sal 2.00 Sample 10: Pesticides/PCBs (8081A18082)

-Appendix II GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/20/2007 Analyst: AM Page 33 of 72 ADVANCED CHEMISTRY LABS, INC.IACLI Phone: (770)

Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.nel www.advancedchemislrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt BatseJ Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Chlorinated Herbicides (8151A)-Appendix II ACL Sample#: 255922 Units: Analyte Result PQL 2,4-0 Sal 1.0 Oinoseb Sal 1.0 2,4,5-TP (Silvex)Sal 1.0 2,4,5-T Sal 1.0 Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/15/2007 Analyst: AM Page 34 of 72--

---

IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

R:"o-a-:d-.

Fax: (770)409-1844 P.O.Box 88610*AUanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Miscellaneous Organics (8011)-Appendix II Sample 10: GWC-13/MW-13 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/25/2007 ACl Sample#: 255922 Units: Analyst: MA Analyte 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane Result sal sal Pgl 0.20 0.05 Page 35 of 72 Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Appendix II Metals (6010Bn470Al784117041)

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

Date Analyzed: 06/13/2007 Analyst: SW/JR Sample 10: ACL Sample#: 255922 Units: Analyte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Barium 0.061 0.020 Beryllium Sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020:Cobalt Sal 0.050 Copper Sal 0.020 Lead Sal 0.010 Mercury BOl 0.0005 Nickel Sal 0.020 Selenium Sal 0.040 Silver Sal 0.010 Thallium Sal 0.002 Tin Sal 0.025 Vanadium Sal 0.050 Zinc 0.089 0.020 Page 36 of 72 I ACL I ADVANCED CHEMISTRY LABS, INC.Phone: (710)

Fax: (710)409-1844 P.O.Box 88610*Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj#: Vogtle IF#3 1205 Johnson Ferry Rd.ACL Project#: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr.Kurt Batsel Date Sample ID ACL#Analvte Matrix Result PQL Units Analyzed GWC-13/MW-13 255922 Cyanide (9012A)Water Sal 0.020 mg/l 06/13/2007 GWC-13/MW-13 255922 Sulfide (9034)Water BOl 1.0 mg/l 06/1212007 Page 37 of 72 ADVANCED CHEMISTRY LABS, INC.IACLI Phone: (770) G"'!"'A......3...0"'!"'36....0-Fax: (770)409-1844 P.O.Box 88610*Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 v.a.(5030B/8260B)

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

Date Analyzed: 0611412007 ACL Sample#: 255923 Units: IJg/L Analyst: ME Analyte Result PQL Analyte Result PaL Acetone Sal 100 Ethyl methacrylate Sal 10 Acetonitrile Sal 100 Ethylbenzene Sal 5 Acrolein Sal 100 2-Hexanone Sal 50 Acrylon itrile Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile Sal 100 Senzene Sal 5 Methyl bromide Sal 10)Sromochloromethane Sal 5 Methyl chloride Sal 10 Sromodichloromethane Sal 5 Methyl ethyl ketone Sal 100 Sromoform Sal 5 Methyl iodide Sal 5 Carbon disulfide Sal 5 Methyl methacrylate Sal 30 Carbon tetrachloride Sal 5 4-Methyl-2-pentanone Sal 50 Chlorobenzene Sal 5 Methylene bromide Sal 5 Chloroethane Sal 10 Methylene chloride Sal 5 Chloroform Sal 5 Naphthalene Sal 5 Chloroprene Sal 20 Propionitrile Sal 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane Sal 5 1,1,1,2-Tetrachloroethane Sal 5 1.2-Dibromoethane Sal 5 1,1.2,2-Tetrachloroethane Sal 5 trans-1,4-Dichloro-2-butene Sal 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene Sal 5 Toluene Sal 5 1,3-Dichlorobenzene Sal 5 1,1,1-Trichloroethane Sal 5 1 A-Dichlorobenzene Sal 5 1,1.2-Trichloroethane Sal 5 Dichlorodifluoromethane Sal 5 Trichloroethene Sal 5 1,1-Dichloroethane Sal 5 Trichlorofluoromethane Sal 5 1,2-Dichloroethane Sal 5 1,2.3-Trichloropropane Sal 5 1,1-Dichloroethene Sal 5 Vinyl acetate Sal 50 cis-1,2-Dichloroethene Sal 5 Vinyl chloride Sal.2 trans-1,2-Dichloroethene Sal 5 m,p-Xylene Sal 10 1,2-Dichloropropane Sal 5 o-Xylene Sal 5 1,3-Dichloropropane Sal 5 2,2-Dichloropropane Sal 15 1,1-Dichloropropene Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1 ,3-Dichloropropene Sal 5 Page 38 of 72 I ACL I ADVANCED CHEMISTRY LABS, INC.

Fax: (770)409-1844 P.O.Box 88610*AUanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr, Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle IF#3 53572 06/08/2007 07/12/2007 Acid Extractables (8270C)-Appendix II Sample ID: GWA-15/MW-15 Matrix: Date Sampled: Date Extracted:

Date Analyzed: ACl Sample#: 255923 Units: IJg/l Analyst: Water 06/04/2007 06/11/2007 06/15/2007 RB Analyte 4-Chloro-3-methylphenol 2-Chlorophenol m&p-Cresol o-Cresol 2,4-Dichlorophenol I 2,6-Dichlorophenol Q........,4-Dimethylphenol r..'}4,6-Dinitro-2-methylphenol 2,4-Dinitrophenol 2-Nitrophenol 4-Nitrophenol Pentachlorophenol Phenol 2,3,4,6-Tetrachlorophenol

2,4,5-Trichlorophenol 2,4,6-Trichlorophenol Result Sal Sal Sal Sal BOl Sal BOl Sal Sal Sal Sal Sal Sal Sal Sal Sal PQl 20 10 10 10 10 10 10 50 50 10 50 50 10 10 10 10 Page 39 of 72 I ACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409-1844 P.O.Box 88610*Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Base Neutral Extractables (8270C)-Appendix II Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06111/2007 Date Analyzed: 06115/2007 ACl Sample#: 255923 Units: Analyst: RB Analyte Result PQl Analvte Result PQl Acenaphthene SaL 10 Dimethyl phthalate SOL 10 Acenaphthylene SOL 10 p-(Dimethylamino)azobenzene SOL 10 Acetophenone SOL 10 7,12-Dimethylbenz(a)anthracene SQL 10 2-Acetylaminofluorene SaL 20 3,3'-Dimethylbenzidine SQL 10 4-Aminobiphenyl SQL 20 m-Dinitrobenzene SQL 20 Anthracene SQL 10 2,4-Dinitrotoluene SQL 10 enzo(a)anthracene SaL 10 2,6-Dinitrotoluene SOL 10 enzo(a)pyrene SOL 10 Diphenylamine SOL 10 Senzo(b)fluoranthene SOL 10 Disulfoton SaL 10 Senzo(g, h, i)perylene SaL 10 Ethyl methanesulfonate SOL 20 Senzo(k)fluoranthene SOL 10 Famphur SQL 20 Senzyl alcohol SQL 20 Fluoranthene SaL 10 Sis(2-chloroethoxy)methane SaL 10 Fluorene SOL 10 Sis(2-ch loroethyl)ether SaL 10 Hexachlorobenzene SOL 10 Sis(2-chloroisopropyl)ether SQL 10 Hexachlorobutadiene SaL 10 Sis(2-ethylhexyl)phthalate SOL 10 Hexachlorocyclopentadiene SQL 10 4-Sromophenyl phenyl ether SaL 10 Hexachloroethane SQL 10 Sutyl benzyl phthalate SOL 10 Hexachloropropene SOL 10 p-Chloroaniline SaL 20 Indeno(1,2,3-cd)pyrene SOL 10 Chlorobenzilate SaL 10 Isodrin SOL 20 2-Chloronaphthalene SOL 10 Isophorone SQL 10 4-Chlorophenyl phenyl ether SaL 10 Isosafrole SQL 10 Chrysene SQL 10 Kepone SOL 20 Di-n-butyl phthalate SQL 10 Methapyrilene SOL 100 Di-n-octyl phthalate SOL 10 Methyl methanesulfonate SQL 10 Diallate SOL 10 Methyl parathion SOL 10 Dibenz(a, h)anthracene SQL 10 3-Methylcholanthrene SQL 10 Dibenzofuran SOL 10 2-Methylnaphthalene SQL 10 1,2-Dichlorobenzene SQL 10 Naphthalene SOL 10 1,3-Dichlorobenzene SQL 10 1,4-Naphthoquinone SQL 10 1,4-Dichlorobenzene BOl 10 1-Naphthylamine BOl 10\,3'-Dichlorobenzidine SQL 20 2-Naphthylamine SQL 10 Diethyl phthalate SQL 10 5-Nitro-o-toluidine SOL 10 Dimethoate SOL 10 2-Nitroaniline SQL 50 Page 40 of 72.'..--._.._---.-_.._-..._---_.._-_..._----._----------'.-_.--_.,,--

IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409-1844 P.O.Box 88610*Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta I GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Base Neutral Extractables (8270C)-Appendix II Sample ID: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/15/2007 ACL Sample#: 255923 Units: IJg/L Analyst: RB Analyte 3-Nitroaniline 4-Nitroaniline Nitrobenzene N-Nitroso-di-n-butylamine N-Nitrosodiethylamine N-Nitrosodimethylamine C t****.

.....N-Nitrosodipropylamine N-Nitrosomethylethylamine N-Nitrosopiperidine N-Nitrosopyrrolidine Parathion Pentachlorobenzene Pentach loron itrobenzene Phenacetin Phenanthrene p-Phenylenediamine Phorate Pronamide Pyrene Safrole 1,2,4,5-Tetrachlorobenzene Thionazin 0-Toluidine 1,2,4-Trichlorobenzene 0,0,0-Triethyl phosphorothioate 1,3,5-Trinitrobenzene Result SOL SOL SOL SOL SOL SOL SOL SaL SOL SOL SOL SOL SOL SOL SOL SaL SOL SOL SOL SOL SOL SOL SOL SOL SaL SOL SOL PQL 50 20 10 10 20 10 10 10 10 20 40 20 10 20 20 10 10 10 10 10 10 10 20 10 10 50 10 Page 41 of 72 Phone: (770)409*1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta, GA 30360 P.O.Box 88610*Atlanta, GA 30356 www.advancedchemlstrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Pesticides/PCBs (8081A18082)

-Appendix II GWA-15/MW*15 Matrix: Water Date Sampled: 06/0412007 Date Extracted:

06/11/2007 Date Analyzed: 06/20/2007 Analyst: AM Sample 10: ACL Sample#: 255923 Units: Analyte Result PQL Aldrin Sal 0.05 Arochlor-1016 Sal 0.50 Arochlor-1221 Sal 0.50 Aroch lor-1232 Sal 0.50 Arochlor-1242 Sal 0.50 Arochlor-1248 Sal 0.50 Sal 0.50 Arochlor-1260 Sal 0.50 a-SHe Sal 0.05 b-SHC Sal 0.05 d-SHC Sal 0.05 g-SHC Sal 0.05 Chlordane Sal 0.10 4,4'-DDD Sal 0.05 4,4'-DDE Sal 0.05 4,4'-DDT Sal 0.05 Dieldrin Sal 0.05 Endosulfan I Sal 0.05 Endosulfan II Sal 0.05 Endosulfan sulfate Sal 0.05 Endrin Sal 0.05 Endrin aldehyde Sal 0.05 Heptachlor Sal 0.05 Heptachlor epoxide Sal 0.05 Methoxychlor Sal 0.05 Toxaphene Sal 2.00 Page 42 of 72 IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

-.

Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemlstrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Chlorinated Herbicides (8151A)-Appendix II ACL Sample#: 255923 Units: 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 Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/15/2007 Analyst: AM Page 43 of 72 IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)4........14..4....4-------------

....

....m-w-i1-e-r R...o-a....d-*....Su-j-te-1...0-0-.A"t1-a-nta-, G"'A--S-OS"'6 Fax: (770)409*1844 P.O.Box 88610*Atlanta, GA SOS56 e-mail: acl@acl-Iabs.net www.advancedchemislrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Miscellaneous Organics (8011)-Appendix II Sample 10: GWA-15/MW-15 Matrix: Water Date Sampled: 06/04/2007 Date Extracted:

06/11/2007 Date Analyzed: 06/25/2007 ACL Sample#: 255923 Units: Analyst: MA Analvte 1,2-Dibromo-3-chloropropane 1 ,2-Dibromoethane Result Sal Sal PQL 0.20 0.05 Page 44 of 72 Phone: (770)409*1444 Fax: (770)409-1844 e-mail: acl@acl-labs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwller Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Appendix II Metals (6010B/7470Al7841/7041) 06/13/2007 SW/JR Water 06/04/2007 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: GWA-15/MW-15 Sample 10: ACL Sample#: 255923 Units: IJg/L Analyte Result PQL Antimony Sal 0.006 Arsenic Sal 0.010 Sarium sal 0.020 Seryllium sal 0.004 Cadmium Sal 0.005 Chromium Sal 0.020.Cobalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010 Mercury Sal 0.0005 Nickel0.0360.020 Selenium Sal 0.040 Silver SaL 0.010 Thallium Sal 0.002 Tin Sal 0.025 Vanadium Sal 0.050 Zinc 0.442 0.020 Page 45 of 72 I A CL 1.........

........

.......Y""'!""LAB Phone: (770)409-1444 3039 Arnwiler Road*Suite 100*Atlanta.GA 30360 Fax: (770)409-1844 P.O.Box 88610*Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: The Dextra Group Client Proj#: Vogtle IF#3 1205 Johnson Ferry Rd.ACL Project#: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/12/2007 Contact: Mr.Kurt Batsel Date Sample 10 ACL#Analvte Matrix Result PQL Units Analyzed GWA-15/MW-15 255923 Cyanide (9012A)Water Sal 0.020 mg/l 06/13/2007 GWA-15/MW-15 255923 Sulfide (9034)Water Sal 1.0 mg/l 06/12/2007 Page 46 of 72 Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta, GA 30360 P.O.Box 88610*Atlanta, GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 v.o.(50308/82608)

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

Date Analyzed: 06/14/2007 ACL Sample#: 255924 Units: Analyst: ME Analvte Result PQL Analvte Result PQL Acetone BOl 100 Styrene BOl 5 Acrylonitrile BOl 50 1,1,1,2-Tetrachloroethane BOl 5 Benzene BOl 5 1,1,2,2-Tetrachloroethane BOl 5 Bromoch loromethane BOl 5 Tetrachloroethene BOl 5 Bromodichloromethane BOl 5 Toluene BOl 5 Bromoform BOl 5 1,1,1-Trichloroethane BOl 5 Ccarbon disulfide BOl 5 1,1,2-Trichloroethane BOl 5;',..'Carbon tetrachloride BOl 5 Trichloroethene BOl 5 Ch lorobenzene BOl 5 Trichlorofluoromethane BOl 5 Chloroethane BOl 10 1,2,3-Trichloropropane BOl 5 Chloroform BOl 5 Vinyl acetate BOl 50 1,2-Dibromo-3-chloropropane BOl 20 Vinyl chloride BOl 2 Dibromochloromethane BOl 5 m,p-Xylene BOl 10 1,2-Dibromoethane BOl 5 o-Xylene BOl 5 trans-1,4-Dichloro-2-butene BOl 10 1,2-Dichlorobenzene BOl 5 1 A-Dichlorobenzene BOl 5 1,1-Dichloroethane BOl 5 1,2-Dichloroethane BOl 5 1,1-Dichloroethene BOl 5 cis-1,2-Dichloroethene BOl 5 trans-1,2-Dichloroethene BOl 5 1,2-Dichloropropane BOl 5 cis-1,3-Dichloropropene BOl 5 trans-1,3-Dichloropropene BOl 5 Ethylbenzene BOl 5 2-Hexanone BOl 50 Methyl bromide BOl 10 Methyl chloride BOl 10 Methyl ethyl ketone BOl 100 Methyl iodide BOl 5-Methyl-2-pentanone BOl 50 Methylene bromide BOl 5 Methylene chloride BOl 5 Page 47 of 72----------

Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwller Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Miscellaneous Organics (8011)-Appendix II ACL Sample#: 255924 Sample 10: EO-Blank Units: Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Water 06/05/2007 06/11/2007 06/25/2007 MA Analyte 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane Result Sal Sal PQl 0.20 0.05 Page 48 of 72 IACL I ADVANCED CHEMISTRY LABS.INC.Phone: (770)

Fax: (770)409*1844 P.O.Box 88610*Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advsncedchemlslrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07112/2007 Appendix I Metals (60108/7841/7041)

ACl Sample#: 255924 Units: mg/L Analyte Result Pgl Antimony SOL 0.006 Arsenic SOL 0.010 Sarium 0.030 0.020 Beryllium SOL 0.004 Cadmium SOL 0.005 Chromium SOL 0.020 Cobalt SOL 0.050 Copper SOL 0.020 lead SOL 0.010 Nickel SOL 0.020 Selenium SOL 0.040 Silver SOL 0.010 Thallium SOL 0.002 Vanadium SOL 0.050 Zinc SOL 0.020 Sample 10: EO-Blank Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Water 06/05/2007 06113/2007 SW Page 49 of 72 Phone: (770)409-1444 Fax: (770)409*1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*AUanta.GA 30360 P.O.Box 88610*AUanta.GA 30356 www.advancedchemlstrylabs.com Client: The Dextra Group Client Proj#: Vogtle IF#3 1205 Johnson Ferry Rd.ACL Project#: 53572 Suite 136-446 Date Received: 06/08/2007 Marietta, GA 30068-0000 Date Reported: 07/1212007 Contact: Mr.Kurt Batsel Date Sample 10 ACL#Analvte Matrix Result PQL Units AnalYZed EO-Blank 255924 Mercury (7470A)Water BOl 0.0005 mg/l 06115/2007 Page 50 of 72 I A CL 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 QUALITY CONTROL SECTION Page 51 of 72 I ACL I ADVANCED CHEMISTRY LABS, INC.

Fax: (770)409-1844 P.O.Box 88610.Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/0812007 07/1212007 V.O.(50308/82608)

-Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water Oibromofluoromethane 1,2-0Ichloroethane-d4 Toluene-d8 4-Bromofluorobenzene (77-137)(72-138)(84-122)(77-125)ACL Sample#255920 90 97 95 84 255921 91 93 97 82 255922 90 93 96 82 255923 86 94 94 82**Matrix Interference DO=Diluted Out Page 52 of 72 Phone: (770)409*1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*AUanta, GA 30360 P.O.Box 88610*AUanta, GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 0711212007 V.O, (50308/82608)

-Appendix I SURROGATE PERCENT RECOVERY

SUMMARY

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

255918 86 96 97 86 255919 90 95 95 86 255924 89 98 99 85**Matrix Interference DO=Diluted Out Page 53 of 72 I A CL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409-1844 P.O.Box 88610*Atlanta, GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 v.o.(5030B/8260B)

-Appendix II Sample 10:---------_.

Matrix: Water Date Sampled:-----------

Date Extracted:

Date Analyzed: 06/14/2007 ACL Sample#: Blank Units: Analyst: ME Analyte Result PQL Analvte Result PQL Acetone Sal 100 Ethyl methacrylate Sal 10 Acetonitrile Sal 100 Ethylbenzene Sal 5 Acrolein Sal 100 2-Hexanone Sal 50 Acrylonitrile Sal 50 Isobutyl alcohol Sal 50 Allyl chloride Sal 10 Methacrylonitrile Sal 100 Senzene Sal 5 Methyl bromide Sal 10 Bromochloromethane BOl 5 Methyl chloride Sal 10 Sromodichloromethane Sal 5 Methyl ethyl ketone Sal 100 Bromoform Sal 5 Methyl iodide Sal 5 Carbon disulfide Sal 5 Methyl methacrylate Sal 30 Carbon tetrachloride Sal 5 4-Methyl-2-pentanone Sal 50 Chlorobenzene Sal 5 Methylene bromide Sal 5 Chloroethane Sal 10 Methylene chloride Sal 5 Chloroform Sal 5 Naphthalene Sal 5 Chloroprene Sal 20 Propionitrile Sal 150 1,2-Dibromo-3-chloropropane Sal 20 Styrene Sal 5 Dibromochloromethane Sal 5 1,1,1,2-Tetrachloraethane Sal 5 1,2-Dibromoethane Sal 5 1,1,2,2-Tetrachloroethane Sal 5 trans-1 A-Dichloro-2-butene Sal 10 Tetrachloroethene Sal 5 1,2-Dichlorobenzene Sal 5 Toluene Sal 5 1,3-Dichlorobenzene Sal 5 1,1,1-Trichloroethane Sal 5 1 A-Dichlorobenzene Sal 5 1,1,2-Trichloroethane Sal 5 Dichlorodifluoromethane Sal 5 T rich loroethene Sal 5 1 ,1-Dichloroethane Sal 5 T rich lorofluoromethane Sal 5 1,2-Dichloroethane BOl 5 1,2,3-Trichloropropane Sal 5 1,1-Dichloroethene Sal 5 Vinyl acetate Sal 50 cis-1,2-Dichloroethene Sal 5 Vinyl chloride BOl 2 trans-1,2-Dichloroethene Sal 5 m,p-Xylene Sal 10 1,2-Dichloropropane Sal 5 o-Xylene Sal 5 1,3-Dichloropropane Sal 5 Bal 15 , 1-Dich loropropene Sal 5 cis-1,3-Dichloropropene Sal 5 trans-1,3-Dichloropropene BOl 5 Page 54 of 72-'_.._..._--._._---_.-_.--_.-

ADVANCED CHEMISTRY LABS, INC.GC/MS UNIT#3 WATER VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Analysis Date: 06-14-07 Sample ID: 255916-1 SPIKE SAMPLE MS MS ac.ADDED CONCENTRATION CON CENTRA TION%LIMITS COMPOUND REC#REC.1,1-dichloroethene 20.0 0.0 22.5 113 (54-144)benzene 20.0 0.0 21.2 106 (82-132)trichloroethene 20.0 0.0 20.4 102 (73-128)toluene 20.0 0.0 20.9 105 (83-130)chlorobenzene 20.0 0.0 22.4 112 (82-123)SPIKEMSDMSD ADDED CONCENTRATION

%%ac LIMITS COMPOUND (fJg/L)(fJg/L)REC#RPD#RPD REC.1,1-dichloroethene 20.0 21.3 107 5 14 (54-144)benzene 20.0 21.1 105 1 14 (82-132)trich loroethene 20.0 20.9 105 3 14 (73-128)toluene 20.0 20.9 105 0 13 (83-130)chlorobenzene 20.0 22.3 112 0 13 (82-123)#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 SpikeRecovery:0 out of 10 outside limits Comments: Page 55 of 72 IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

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

SUMMARY

Water Phenol-d6 2-Fluorophenol 2,4,6-Tribromophenol (8.50)(8-58)(10.123)ACL Sample#255920 13 22 50 255921 12 24 46 255922 19 25 49 255923 14 25 49...Matrix Interference DO=Diluted Out Page 56 of 72 IACLI Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta, GA 30360 P.O.Box 88610*Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle IF#3 53572 06/08/2007 0711212007 Acid Extractables (8270C)-Appendix II Sample 10: ACL Sample#: Blank Units: Analyte Result PQL 4-Chloro-3-methylphenol SCl 20 2-Chlorophenol SCl 10m&p-Cresol SCl 10 o-Cresol SCl 10 2,4-Dichlorophenol SCl 10 2,6-Dichlorophenol BCl 10\2,4-Dimethylphenol SCl 10 4,6-Dinitro-2-methylphenol BCl 50 2, 4-Di nitropheno I BCl 50 2-Nitrophenol SCl 10 4-N itrophenol BCl 50 Pentachlorophenol BCl 50 Phenol SCl 10 2,3,4,6-Tetrachlorophenol BCl 10 2,4,5-Trichlorophenol SCl 10 2,4,6-Trichlorophenol SCl 10 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Water 06/1112007 06/14/2007 RB Page 57 of 72 ADVANCED CHEMISTRY LABS, INC.SEMI-VOL GC/MS UNIT#1 ACID EXTRACTABLES (8270C)WATER SEMI-VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Sequence Date: 06-14-07 Matrix Spike-Sample No.: 255909 195 SPIKE SAMPLE MS MS ac.COMPOUND ADDED CONCENTRATION CONCENTRATION

%LIMITS (lJg/L)(1J9/L)(lJg/L)REC#REC.Pentachlorophenol 200 0 26 13 9-103)Phenol 200 0 46 23 12-89)2-Chlorophenol 200 0 69 35 27-123)4-Chloro-3-methylphenol 200 0 117 59 23-97)4-Nitrophenol 200 0 42 21 10-80)SPIKE MSD MSD ac LIMITS COMPOUND ADDED CONCENTRATION

%%(lJg/L)(lJg/L)REC#RPD#RPD REC.Pentachlorophenol 200 30 15 14 50 9-103)Phenol 200 49 25 6 42 12-89)2-Chlorophenol 200 71 36 3 40 27-123)4-Chloro-3-methylphenol 200 124 62 6 42 23-97)4-Nitrophenol 200 39 20 7 50 10-80)#Column to be used to flag recovery and RPD values with an asterisk*Values outside of QC limits RPD: 0 out of 5 outside limits Spike Recovery: 0 out of 10 outside limits Comments: Page 58 of 72 I A CL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409*1844 P.O.Box 88610*AUanta.GA 30356 e-mall: acl@acl-Iabs.net www.advancedchemistryJabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Base Neutral Extractables (8270C)-Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

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

255920 54 46 42 255921 49 47 42 255922 54 51 43 255923 66 49 37**Matrix Interference DO=Diluted Out Page 59 of 72 I A CL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

Fax: (770)409-1844 P.O.Box 88610.Atlanta.GA 30356 e-mail: acl@acl-Iabs.net www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta.GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Base Neutral Extractables (8270C)*Appendix II Sample 10:-----------

Matrix: Water Date Sampled:-----------

Date Extracted:

06/11/2007 Date Analyzed: 06/14/2007 ACl Sample#: Blank Units: Analyst: RB Analyte Result PQl Analyte Result PQl Acenaphthene Sal 10 Dimethyl phthalate Sal 10 Acenaphthylene Sal 10 p-(Dimethylamino)azobenzene Sal 10 Acetophenone Sal 10 7,12-Dimethylbenz(a)anthracene Sal 10 2-Acetylaminofluorene Sal 20 3,3'-Dimethylbenzidine Sal 10 4-Aminobiphenyl Sal 20 m-Dinitrobenzene Sal 20Anthracene Sal 10 2,4-Dinitrotoluene Sal 10 USenzo(a)anthracene Sal 10 2,6-Dinitrotoluene BOl 10 Senzo(a)pyrene Sal 10 Diphenylamine Sal 10 Senzo(b)fluoranthene Sal 10 Disulfoton Sal 10 Benzo(g, h, i)perylene Sal 10 Ethyl methanesulfonate Sal 20 Benzo(k)fluoranthene Sal 10 Famphur Sal 20 Senzyl alcohol Sal 20 Fluoranthene Sal 10 Sis(2-chloroethoxy)methane Sal 10 Fluorene Sal 10 Sis(2-chloroethyl)ether Sal 10 Hexachlorobenzene Sal 10 Sis(2-chloroisopropyl)ether Sal 10 Hexachlorobutadiene Sal 10 Bis(2-ethylhexyl)phthalate Sal 10 Hexachlorocyclopentadiene Sal 10 4-Sromophenyl phenyl ether Sal 10 Hexachloroethane Sal 10 Sutyl benzyl phthalate Sal 10 Hexachloropropene Sal 10 p-Chloroaniline Sal 20 Indeno(1,2,3-cd)pyrene Sal 10 Chlorobenzilate Sal 10 IsOOrin Sal 20 2-Chloronaphthalene Sal 10 Isophorone Sal 10 4-Chlorophenyl phenyl ether Sal 10 Isosafrole Sal 10 Chrysene Sal 10 Kepone Sal 20 Di-n-butyl phthalate Sal 10 Methapyrilene Sal 100 Di-n-octyl phthalate Sal 10 Methyl methanesulfonate Sal 10 Diallate Sal 10 Methyl parathion Sal 10 Dibenz(a, h)anthracene Sal 10 3-Methylcholanthrene Sal 10 Dibenzofuran Sal 10 2-Methylnaphthalene Sal 10 1,2-Dichlorobenzene Sal 10 Naphthalene Sal 10 1,3-Dichlorobenzene Sal 10 1,4-Naphthoquinone Sal 10 ,1,4-Dichlorobenzene Sal 10 1-Naphthylamine BOl 10 i 3 ,3'-Dichlorobenzidine SOL 20 2-Naphthylamine Sal 10 Diethyl phthalate Sal 10 5-Nitro-o-toluidine Sal 10 Dimethoate Sal 10 2-Nitroaniline Sal 50 Page 60 of 72 Phone: (770)409-1444 Fax: (770)409*1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta, GA 30360 P.O.Box 88610*Atlanta, GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Base Neutral Extractables (8270C)-Appendix II Sample ID: ACL Sample#: Blank Units: jJg/L Analyte Result Pgl 3-Nitroaniline Sal 50 4-Nitroaniline Sal 20 Nitrobenzene Sal 10 N-Nitroso-di-n-butylamine Sal 10 N-Nitrosodiethylamine Sal 20 N-Nitrosodimethylamine Sal 10 N-Nitrosodiphenylamine BOl 10 N-Nitrosodipropylamine Sal 10 N-Nitrosomethylethylamine BOl 10 N-Nitrosopiperidine Sal 20 N-Nitrosopyrrolidine Sal 40 Parathion Sal 20 Pentachlorobenzene Sal 10 Pentachloronitrobenzene Sal 20 Phenacetin Sal 20 Phenanthrene Sal 10 p-Phenylenediamine Sal 10 Phorate Sal 10 Pronamide BOl 10 Pyrene Sal 10 Safrole Sal 10 1,2.4,5-Tetrachlorobenzene Sal 10 Thionazin Sal 20 o-Toluidine Sal 10 1,2,4-Trichlorobenzene Sal 10 o.o,o-Triethyl phosphorothioate Sal 50 1.3.5-Trinitrobenzene Sal 10 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Water 06/11/2007 06/14/2007 RB Page 61 of 72 ADVANCED CHEMISTRY LABS, INC.SEMI-VOL GC/MS UNIT#1 BASE/NEUTRAL EXTRACTABLES (8270C)WATER SEMI-VOLATILE MATRIX SPIKE/MATRIX SPIKE DUPLICATE RECOVERY Sequence Date: 06-14-07 Matrix Spike-Sample No.: 255909 SPIKE SAMPLE MS MS ac.ADDED CONCENTRATION CONCENTRATION

%LIMITS COMPOUND REC#REC.1,2,4-Trichlorobenzene 100 0 43 43 39-98)Acenaphthene 100 0 48 48 46-118)2A-Dinitrotoluene 100 0 51 51 24-96)Di-n-butyl phthalate 100 0 60 60 11-117 Pyrene 100 0 45 45 26-127 N-Nitrosodi-n-propylamine 100 0 49 49 41-116 1 A-Dichlorobenzene 100 0 51 51 36-97)SPIKEMSDMSD ADDED CON CENTRA TION%%ac LIMITS COMPOUND(lJg/L)REC#RPD#RPD REC.1,2,4-Trichlorobenzene 100 55 55 24 28 39-98)Acenaphthene 100 49 49 2 31 46-118)2,4-Dinitrotoluene 100 56 56 9 38 24-96)Di-n-butvt phthalate 100 56 56 7 40 11-117 Pyrene 100 44 44 2 31 26-127 N-Nitrosodi-n-propylamine 100 67 67 31 38 41-116 1 A-Dichlorobenzene 100 45 45 13 28 36-97)#Column to be used to flag recovery and RPD values with an asterisk*Values outside of ac limits RPD: 0 out of 7 outside limits Spike Recovery: 0 out of 14 outside limits Comments: Page 62 of 72 Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta.GA 30360 P.O.Box 88610*AUanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta.GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/1212007 Pesticides/PCBs (8081A18082)

-Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water TCMX DCBP (30-130)(30-130)ACL Sample#255920 51 55 255921 46 44 255922 63 49 255923 58 43**Matrix Interference DO=Diluted Out Page 63 of 72 I A CL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

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

-Appendix II Sample 10:-----_._._-

ACL Sample#: Blank Analyte Aldrin Arochlor-1016 Arochlor-1221 Arochlor-1232 Arochlor-1242

....Arochlor-1248 OArochlor-1254 Arochlor-1260 a-SHC b-SHC d-SHC g-SHC Chlordane 4,4'-000 4,4'-DDE 4,4'-DDT Oieldrin Endosulfan I Endosulfan II Endosulfan sulfate Endrin Endrin aldehyde Heptachlor

Heptachlor epoxide Methoxychlor Toxaphene Units: Result Sal Sal Sal Sal Sal sal Sal sal Sal Sal Sal Sal Sal sal Sal Sal Sal Sal Sal Sal Sal sal Sal Sal Sal Sal PQL 0.05 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.05 0.05 0.05 0.05 0.10 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 2.00 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Water 06/11/2007 06/19/2007 AM Page 64 of 72 Advanced Chemistry Labs Pesticides Spike Report (SW-B46 Method BOB1A)Instrument ID: Column: ACL#: Matrix: Extraction Date: Analysis Date: Initial Volume: Final Volume: Dilution Factor: Unit: HP5890A-ECDGC#1 STx-CLPII, 30m, O.53mm, O.42pm LCSW061107 WATER 6/11/07 6/19/07 1000.0 ml 1 1 pg/L orppb R.T.Spike Sample liS liS R.T.IISD MSD RPD QC Limits Pesticide liS Added Resun Cone.Ree.rAJ)MSD Cone.Rec.rAJ)rAJ)RPD%Recovel}a-BHC 11.5590.5000.000 0.528 108 11.562 0.527 105 0 25 40 160 g-BHC (Lindane)12.4160.5000.000 0.512 102 12.418 0.512 102 0 25 40 160 b-BHC 12.637 0.500 0.000 0.483 97 12.639 0.482 98 0 25 40 160 d-BHC 13.297 0.5000.0000.494 99 13.299 0.493 99 0 25 40 160 Heptachlor 13.400 0.5000.0000.464 93 13.401 0.462 92 0 25 40 160 Aldrin 14.1050.5000.000 0.499 100 14.105 0.498 100 0 25 40 160 Heptachlor Epoxide 15.330 0.500 0.000 0.489 98 15.329 0.487 97 0 25 40 160 a-Endosulfan I 16.1320.5000.000 0.433 87 16.130 0.431 86 0 25 40 160 DOE 16.360 0.500 0.000 0.476 96 16.358 0.475 95 0 25 40 160 Dieldrin 16.686 0.500 0.000 0.499 100 16.683 0.498 100 0 25 40 160 Endrin 17.2960.5000.000 0.511 102 17.292 0.509 102 0 25 40 160 DOD 17.512 0.5000.0000.474 95 17.509 0.473 95 0 25 40 160 b-Endosulfan II 17.720 0.500 0.000 0.481 98 17.716 0.480 9B 0 25 40 160 DDT 18.1250.5000.000 0.461 92 18.122 0.461 92 0 25 40 160 Endrin Aldehyde 18.390 0.500 0.000 0.431 8B 18.386 0.431 86 0 25 40 160 Endosulfan Sulfate 18.934 0.500 0.000 0.437 87 18.929 0.436 87 0 25 40 160 Methoxychlor 19.4690.5000.000 0.426 86 19.463 0.426 86 0 25 40 160 Endrin Ketone 19.985 0.500 0.000 0.551 110 19.978 0.552 110 0 25 40 160*Outside QC limits Page 65 of 72 Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road*Suite 100*Atlanta, GA 30360 P.O.Box 88610*Atlanta, GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 30068-0000 Mr.Kurt Batsel Client Proj#: ACL Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/08/2007 07/12/2007 Chlorinated Herbicides (8151A)-Appendix II SURROGATE PERCENT RECOVERY

SUMMARY

Water oeAA (30-130)ACL Sample#255920 84 255921 74 255922 37 255923 49..Matrix Interference DO=Diluted Out Page 66 of 72 Phone: (770)409-1444 Fax: (770)409-1844 e-mail: acl@acl-Iabs.net ADVANCED CHEMISTRY LABS, INC.3039 Amwiler Road'Suite 100*Atlanta.GA 30360 P.O.Box 88610'Atlanta.GA 30356 www.advancedchemistrylabs.com Client: Contact: The Dextra Group 1205 Johnson Ferry Rd.Suite 136-446 Marietta, GA 3006B-0000 Mr.Kurt Batsel Client Proj#: ACl Project#: Date Received: Date Reported: Vogtle LF#3 53572 06/0B/2007 07/1212007 Chlorinated Herbicides (8151A)-Appendix II Sample ID: ACl Sample#: Blank Units: Analyte Result PQl 2,4-0 SOL 1.0 Dinoseb SOL 1.0 2,4,5-TP (Silvex)SOL 1.0 2,4,5-T SOL 1.0 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Water 06/11/2007 06/14/2007 AM Page 67 of 72 Instrument:

Date Extracted: Date Analyzed: ACL Sample No.: ADVANCED CHEMISTRY LABS, INC.Chlorinated Herbicides (8151A)-Appendix II Water Matrix Spike/Spike Duplicate Recoveries HP5890A (w/Dual ECDs)06-11-07 06-14-07 LCS/LCSD061107 SPIKE SAMPLEMSMS MSD MSD Added Result Cone.Ree.Cone.Ree.QC Limits ANALYTE (ug/L)(ug/L)(ug/L)

(%)(ug/L)(%)RPD RPD%Recovery 2,4-0 4.00 0.00 2.58 65 2.92 73 12 25 40 160 Dinoseb 2.00 0.00 1.28 64 1.46 73 13 25 40 160 2,4,5-TP (Silvex)2.00 0.00 1.32 66 1.53 77 15 25 40 160 2,4,5-T 2.00 0.00 1.42 71 1.62 81 13 25 40 160*Outside QC Limits Comment: Page 68 of 72 IACL I ADVANCED CHEMISTRY LABS, INC.Phone: (770)

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

Sample 10: ACl Sample#: Blank Units: mg/L Analyte Result PQl Antimony Sal 0.006 Arsenic Sal 0.010 Barium Sal 0.020 Beryllium BOl 0.004 Cadmium Sal 0.005 Chromium Sal 0.020 Cobalt Sal 0.050 Copper Sal 0.020 lead Sal 0.010 Mercury Sal 0.0005 Nickel Sal 0.020 Selenium Sal 0.040 Silver Sal 0.010 Thallium BOl 0.002 Tin Sal 0.025 Vanadium Sal 0.050 Zinc Sal 0.020 Matrix: Date Sampled: Date Extracted:

Date Analyzed: Analyst: Water 06/13/2007 Page 69 of 72 ADVANCED CHEMISTRY LABS, INC.Appendix II Metals (6010Bn470AJ7841n041)

Water Matrix Spike/Spike Duplicate Recoveries ACL Sample No.: Date Analyzed: Analyst: 255923 (255922 for Hg)06-13-07 SW/JR SPIKE SAMPLE MS MSMSDMSD Added Result Cone.Ree.Cone.Rec.QC Limits ANALYTE (mg/L)(mg/L)(mg/L)(%)(mg/L)(%)RPD RPD%Recovery Antimony 0.200 0.000 0.212 106 0.208 104 2 20 70 130 Arsenic 0.200 0.000 0.219 109 0.213 106 3 20 75 125 Barium 1.000 0.000 1.073 107 1.056 106 2 20 75 125 Beryllium 0.2000.0000.247 123 0.240 120 3 20 75 125 Cadmium 0.050 0.000 0.056 113 0.055 109 3 20 75 125 Chromium 0.200 0.000 0.233 117 0.226 113 3 20 75 125 Cobalt 0.200 0.000 0.230 115 0.224 112 2 20 75 125 Copper 0.200 0.000 0.227 113 0.223 112 2 20 75 125 Lead 0.200 0.000 0.228 114 0.222 111 3 20 75 125 Mercury 0.0020 0.0000 0.0020 99 0.0020 101 3 20 70 130 Nickel 0.200 0.036 0.262 113 0.256 110 3 20 75 125 Selenium 0.050 0.000 0.051 102 0.051 102 0 20 75 125 Silver 0.020 0.000 0.021 103 0.020 101 2 20 75 125 Tin 0.200 0.000 0.224 112 0.225 113 1 20 75 125 Thallium 0.200 0.000 0.214 107 0.210 105 2 20 70 130 Vanadium 0.500 0.000 0.561 112 0.547 109 2 20 75 125 Zinc 0.200 0.442 0.663 110 0.632 95 15 20 75 125*Outside QC Limits Comment: Page 70 of 72......._._-_._-

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Barium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

47 Percent Non-Detects:

61.039%Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%)7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002

-ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02.12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/4/2007 ND<0.01 ND<0.02 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 9 (69.2308%)

7/30/2002-ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 0.015 0.015 6/24/2003 0.036 0.036 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004

-ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005-0.023 0.023 6/5/2006-ND<0.01 ND<0.02 12/4/2006-ND<0.01 ND<0.02 6/4/2007-0.2135 0.2135 GWB-6/MW-6 13 13(100%)7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/5/2006 ND<0.01 ND<0.02 Page 1 6/5/2007 ND<0.01 ND<0.02 GWC-13/MW-1313 0(0%)7/30/2002 0.077 0.077 9/24/2002 0.085 0.085 10/21/2002 0.083 0.083 12/3/2002 0.082 0.082 6/24/2003-0.0295 0.0295 12/17/2003

-0.03250.0325 6/15/2004-0.034 0.034 12/28/2004 0.043 0.043 6/13/2005-0.03 0.03 12/6/2005 0.044 0.044 6/5/2006 0.051 0.051 12/4/2006 0.059 0.059 6/4/2007 0.061 0.061 GWC-14/MW-146 0(0%)7/30/2002 0.068 0.068 9/24/2002-0.0935 0.0935 10/21/2002 0.064 0.064 12/3/2002 0.106 0.106 6/24/2003 0.051 0.051 12/17/2003 0.189 0.189 GWC-5/MW-5 13 6 (46.1538%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002 0.02 0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 0.018 0.018 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.142 0.142 6/15/2004 0.04 0.04 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 0.031 0.031 12/4/2006 0.021 0.021 6/5/2007 0.035 0.035 GWC-17/MW-174 4 (100%)6/15/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/5/2006 ND<0.01 ND<0.02 GWC-18/MW-181 1 (100%)6/15/2005 ND<0.01 ND<0.02 GWB-16/MW-16',1 1 (100%)12/5/2006 ND<0.01 ND<0.02 There is 1 unused well Well Samples ND Date Result Original EO-Blank 9 8 (88.8889%)

6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004

-ND<0.01 ND<0.02 6/15/2005-ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/6/2006 ND<0.01 ND<0.02 Page 2 12/5/2006 6/5/2007 Page 3 ND<0.01 0.03 ND<0.02 0.03 sum(mx)o-0.0112856

-0.0210855

-0.0388292

-0.0551816

-0.0704019

-0.084727

-0.0981964

-0.110899

-0.122902-0.134261-0.14502-0.155256-0.164957-0.174149

-0.182854-0.191093-0.198917

-0.206306-0.213272-0.21983

-0.225988

-0.231757-0.237174-0.242218-0.246895-0.251212-0.255173-0.258811-0.262103-0.265053-0.267664-0.26994-0.271882-0.273519-0.274826-0.275805

-0.276457-0.276783

-0.276783-0.276457-0.275805-0.274826-0.273519-0.271882-0.26994-0.267664 sum(mJ\2)o 5.09463 8.93608 12.0845 14.7585 17.0751 19.1272 20.9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32.3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35.1534 35.1534 35.1545 35.1587 35.1683 35.1854 35.2122 35.2499 35.3017 m(i)o-2.25713-1.95996-1.77438-1.63524-1.52203-1.4325-1.34694-1.27024

-1.20036-1.1359-1.07584

-1.02365

-0.970094-0.919183-0.87055-0.823893-0.782366-0.738846-0.696684-0.655726-0.615839-0.576911-0.541736-0.504372-0.467699-0.431644

-0.396142

-0.363809-0.329206-0.294992-0.26112

-0.227545-0.194225-0.163659-0.130716-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0.0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

Barium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)o 0 1 0.005 2 0.005 3 0.01 4 0.01 5 0.01 6 0.01 7 0.01 8 0.01 9 0.01 10 0.01 11 0.01 12 0.01 13 0.01 14 0.01 15 0.01 16 0.01 17 0.01 18 0.01 19 0.01 20 0.01 21 0.01 22 0.01 23 0.01 24 0.01 25 0.01 26 0.01 27 0.01 28 0.01 29 0.01 30 0.01 31 0.01 32 0.01 33 0.01 34 0.01 35 0.01 36 0.01 37 0.01 38 0.01 39 0.01 40 0.01 41 0.01 42 0.01 43 0.01 44 0.01 45 0.01 46 0.01 Page 4 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 0.01 0.015 0.018 0.02 0.021 0.023 0.0295 0.03 0.031 0.0325 0.034 0.035 0.036 0.04 0.043 0.044 0.051 0.051 0.059 0.061 0.064 0.068 0.077 0.082 0.083 0.085 0.0935 0.106 0.142 0.189 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911 0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745 42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-0.265053-0.260628

-0.254703-0.247426-0.239107

-0.22918

-0.215382

-0.200251-0.183457-0.164708-0.143769-0.120819-0.0957383

-0.0661844

-0.0325427 0.00370859 0.0481066 0.094985 0.152221 0.214663 0.283517 0.360758 0.453185 0.557345 0.669141 0.790904 0.933214 1.10655 1.35851 1.72894 Sample Standard Deviation=0.0393576 Numerator=2.98924 Denominator

=7.67715=76 65.2122 W Statistic=0.389369 5%Critical value of 0.969 exceeds 0.389369 Evidence of non-normality at 95%level of significance1%Critical value of 0.957 exceeds 0.389369 Evidence of non-normality at 99%level of significance Page 5 Kruskal-Wallis Non-Parametric Test Parameter:

Barium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date GWA-15/MW-157/30/2002 9/24/2002 10/21/200212/312002 6124/2003 12/17/2003 611512004 12/28/2004 611412005 12/5/2005 61512006 1214/2006 61412007 Rank Sum=312 Rank Mean=24 Background Rank Sum=312 Background Rank Mean=24 Compliance Wells WelllD Date GWA-7/MW-7 7/30120029/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 611512004.12/28/2004611412005 12/6/2005615120061214/200661412007-Rank Sum=452 Rank Mean=34.7692 GWB-6/MW-6 7/3012002 9/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 611512004 Result ND<0.01 ND<0.01 ND<0.01 ND<0.005 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 Result ND<0.01 ND<0.01 ND<0.01 0.015 0.036 ND<0.01 ND<0.01 ND<0.01 ND<0.01 0.023 ND<0.01 ND<0.01 0.2135 ND<0.01 ND<0.01 ND<0.01 ND<0.005 ND<0.01 ND<0.01 ND<0.01 Rank 24 24 24 24 24 24 24 24 24 24 24 24 24 Rank 24 24 24 48 59 24 24 24 24 52 24 24 77 24 24 24 24 24 24 24 Page 6 12/28/2004 ND<0.01 24 6/13/2005 ND<0.01 24 12/5/2005 ND<0.01 24 6/5/2006 ND<0.01 24 12/5/2006 ND<0.01 24 6/5/2007 ND<0.01 24 Rank Sum=312 Rank Mean=24 GWC-13/MW-13 7/30/2002 0.077 69 9/24/2002 0.085 72 10/21/2002 0.083 71 12/3/2002 0.082 70 6/24/2003-0.0295 53 12/17/2003

-0.0325 56 6/15/2004-0.034 57 12/28/2004 0.043 61 6/13/2005-0.03 54 12/6/2005 0.044 62 6/5/2006 0.051 63 12/4/2006 0.059 65 6/4/2007 0.061 66 Rank Sum=819 Rank Mean=63 GWC-14/MW-14 7/30/2002 0.068 68 9/24/2002-0.0935 73 10/21/2002 0.064 67 12/3/2002 0.106 74 6/24/2003 0.051 64 12/17/2003 0.189 76 Rank Sum=422 Rank Mean=70.3333 GWC-5/MW-5 7/30/2002 ND<0.01 24 9/24/2002 0.02 50 10/21/2002 ND<0.01 24 12/3/2002 0.018 49 6/24/2003 ND<0.01 24 12/17/2003 0.142 75 6/15/2004 0.04 60 12/28/2004 ND<0.01 24 6/13/2005 ND<0.01 24 12/6/2005 ND<0.01 24 6/5/2006 0.031 55 12/4/2006 0.021 51 6/5/2007 0.035 58 Rank Sum=542 Rank Mean=41.6923 GWC-17/MW-176/15/2005 ND<0.01 24 12/6/2005 ND<0.01 24 6/5/2006 ND<0.01 24 12/5/2006 ND<0.01 24 Rank Sum=96 Rank Mean=24 Page 7 GWC-18/MW-186/15/2005 Rank Sum=24 Rank Mean=24 ND<0.01 24 GWB-16/MW-16112/5/2006 Rank Sum=24 Rank Mean=24 ND<0.01 24 Calculation Results: Kruskal-Wallis H Statistic=41.7694 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=54.06 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 41.7694>15.5073 indicating a significant group difference at 5%significance level 54.06>15.5073 indicating a significant group difference at 5%significance level when adjusted for ties Critical Value 20.4136 20.4136 20.4136 25.6865 20.4136 29.7576 54.0092 54.0092 Diffrom Bkg 10.7692 o 39 46.3333 17.6923 o o o Individual Well Comparisons at 1%Significance Level per Comparison1%Z score is 2.32634 Mean background rank is 24 Well Mean Rank GWA-7/MW-7 34.7692 GWB-6/MW-6 24 GWC-13/MW-1363

GWC-14/MW-1470.3333 GWC-5/MW-5 41.6923 GWC-17/MW-1724 GWC-18/MW-1824 GWB-16/MW-16124 Critical Value 22.0439 22.0439 22.0439 27.7379 22.0439 32.1342 58.3226 58.3226 Dif from Bkg 10.7692 o 39 46.3333 17.6923 o o o Individual Well Comparisons at Groupwise 5%Significance Level (0.625%Significance Level per comparison) 0.625%Z score is 2.51213 Mean background rank is 24 Well Mean Rank GWA-7/MW-7 34.7692 GWB-6/MW-6 24 GWC-13/MW-1363

GWC-14/MW-1470.3333 GWC-5/MW-5 41.6923 GWC-17/MW-1724 GWC-18/MW-1824 GWB-16/MW-16124 Page 8 Concentrations (mg/L)Parameter:

Nickel Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

71 Percent Non-Detects:

92.2078%Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 11 (84.6154%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002

-ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 0.089 0.089 6/4/2007 0.036 0.036 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%)

7/30/2002-ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004

-ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005-ND<0.01 ND<0.02 6/5/2006-ND<0.01 ND<0.02 12/4/2006-ND<0.01 ND<0.02 6/4/2007-0.035 0.035 GWB-6/MW-6 13 12 (92.3077%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02" 0 12/5/2006 ND<0.01 ND<0.02" ,-Page 9 6/5/2007 0.041 0.041 GWC-13/MW-1313 13 (100%)7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003-ND<0.01 ND<0.02 12/17/2003

-ND<0.01 ND<0.02 6/15/2004-ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005-ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/4/2007 ND<0.01 ND<0.02 GWC-14/MW-146 5 (83.3333%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002-ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.034 0.034 GWC-5/MW-5 13 12 (92.3077%)

7/30/2002 ND<0.01 ND<0.02*9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.02 ND<0.04 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02.6/13/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/5/2007 0.041 0.041 GWC-17/MW-174 4 (100%)6/15/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/5/2006 ND<0.01 ND<0.02 GWC-18/MW-181 1 (100%)6/15/2005 ND<0.01 ND<0.02 GWB-16/MW-16',1.

1 (100%)12/5/2006 ND<0.01 ND<0.02*There is 1 unused well Well Samples ND Date Result Original EQ-Blank 9 9 (100%)6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004

-ND<0.01 ND<0.02 6/15/2005-ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/6/2006 ND<0.01 ND<0.02 Page 10 12/5/2006 61512007 Page 11 ND<0.01 ND<0.01 ND<0.02 ND<0.02 sum(mx)o-0.0225713

-0.0421709

-0.0599147

-0.076267-0.0914874

-0.105812-0.119282-0.131984-0.143988

-0.155347

-0.166105-0.176342-0.186043-0.195234-0.20394-0.212179-0.220002

-0.227391

-0.234358

-0.240915-0.247073-0.252843

-0.25826

-0.263304-0.267981-0.272297-0.276258-0.279897

-0.283189-0.286139-0.28875-0.291025-0.292967-0.294604-0.295911

-0.29689-0.297543-0.297868-0.297868-0.297543-0.29689-0.295911

-0.294604-0.292967-0.291025-0.28875 sum(mJ\2)o 5.09463 8.93608 12.0845 14.7585 17.0751 19.1272 20.9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32.3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35.1534 35.1534 35.1545 35.1587 35.1683 35.1854 35.2122 35.2499 35.3017 m(i)o-2.25713-1.95996

-1.77438-1.63524

-1.52203

-1.4325-1.34694-1.27024-1.20036

-1.1359-1.07584-1.02365-0.970094-0.919183

-0.87055

-0.823893

-0.782366

-0.738846

-0.696684

-0.655726

-0615839-0.576911-0.541736

-0.504372-0.467699-0.431644-0.396142-0.363809-0.329206-0.294992

-0.26112-0.227545-0.194225-0.163659-0.130716-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0.0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

Nickel All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)o 0 1 0.01 2 0.01 3 0.01 4 0.01 5 0.01 6 0.01 7 0.01 8 0.01 9 0.01 10 0.01 11 0.01 12 0.01 13 0.01 14 0.01 15 0.01 16 0.01 17 0.01 18 0.01 19 0.01 20 0.01 21 0.01 22 0.01 23 0.01 24 0.01 25 0.01 26 0.01 27 0.01 28 0.01 29 0.01 30 0.01 31 0.01 32 0.01 33 0.01 34 0.01 35 0.01 36 0.01 37 0.01 38 0.01 39 0.01 40 0.01 41 0.01 42 0.01 43 0.01 44 0.01 45 0.01 46 0.01 Page 12 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 0.01 0.01 0.01 0.01 0,01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02 0.034 0.035 0.036 0.041 0.041 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911 0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745 42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-0.286139-0.283189-0.279897-0.276258-0.272297-0.267981-0.263304-0.25826-0.252843-0.247073-0.240915-0.234358-0.227391-0.220002-0.212179-0.20394-0.195234-0.186043-0.176342-0.155869

-0.134352-0.111634-0.0876267

-0.062222-0.0352832 0.0134219 0.0666931 0.125562 0.198311 0.27867 Sample Standard Deviation=0.0112687 Numerator=0.0776567 Denominator

=0.629344=76 65.2122 W Statistic=0.123393 5%Critical value of 0.969 exceeds 0.123393 Evidence of non-normality at 95%level of significance 1%Critical value of 0.957 exceeds 0.123393 Evidence of non-normality at 99%level of significance Page 13 Kruskal-Wallis Non-Parametric Test Parameter:

Nickel Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date GWA-15/MW-157/30/2002 9/24/2002 10/21/200212/3/2002 6124/2003 12/17/2003 611512004 12/28/2004 611412005 12/5/2005 61512006 1214/2006 61412007 Rank Sum=547 Rank Mean=42.0769 Result ND<O.01 ND<O.01 ND<O.01 ND<0.02 ND<O.01 ND<O.01 ND<O.01 ND<O.01 ND<O.01 ND<O.01 ND<O.01 0.089 0.036 Rank 36 36 36 36 36 36 36 36 36 36 36 77 74 Background Rank Sum=547 Background Rank Mean=42.0769 Compliance Wells WelllD Date GWA-7/MW-7 7/3012002-9/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 611512004 12/28/2004611412005 12/6/2005615120061214/200661412007-Rank Sum=505 Rank Mean=38.8462 GWB-6/MW-6 7/3012002 9/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 611512004 Result ND<O.01 ND<O.01 ND<O.01 ND<0.02 ND<O.01 ND<O.01 ND<O.01 ND<O.01 ND<O.01 ND<O.01 ND<O.01 ND<O.01 0.035 ND<O.01 ND<O.01 ND<O.01 ND<0.02 ND<O.01 ND<O.01 ND<O.01 Rank 36 36 36 36 36 36 36 36 36 36 36 36 73 36 36 36 36 36 36 36 Page 14 12/28/2004 6/13/2005 12/5/2005 6/5/2006 12/5/2006 6/5/2007 Rank Sum=507 Rank Mean=39 GWC-13/MW-137/30/2002 9/24/2002 10/21/2002 12/3/2002 6/24/200312/17/20036/15/200412/28/2004 6/13/200512/6/2005 6/5/2006 12/4/2006 6/4/2007 Rank Sum=468 Rank Mean=36 GWC-14/MW-14 7/30/2002 9/24/200210/21/2002 12/3/2002 6/24/2003 12/17/2003 Rank Sum=252 Rank Mean=42 GWC-5/MW-5 7/30/2002 9/24/2002 10/21/2002 12/3/2002 6/24/2003 12/17/2003 6/15/2004 12/28/2004 6/13/2005 12/6/2005 6/5/2006 12/4/2006 6/5/2007 Rank Sum: 508 Rank Mean=39.0769 GWC-17/MW-176/15/2005 12/6/2005 6/5/2006 12/5/2006 Rank Sum=144 Rank Mean=36 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 0.041 NO<0.01 NO<0.01 NO<0.01 NO<0.02 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.02 NO<0.01 0.034 NO<0.01 NO<0.01 NO<0.01 NO<0.02 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 NO<0.01 0.041 NO<0.01 NO<0.01 NO<0.01 NO<0.01 36 36 36 36 36 75 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 72 36 36 36 36 36 36 36 36 36 36 36 36 76 36 36 36 36 Page 15 GWC-18/MW-186/15/2005 Rank Sum=36 Rank Mean=36 GWB-16/MW-16112/5/2006 Rank Sum=36 Rank Mean=36 ND<0.01 ND<0.01 36 36 Calculation Results: Kruskal-Wallis H Statistic=0.696227 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=3.22257 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 0.696227<15.5073 indicating no significant group difference at 5%significance level 3.22257<15.5073 indicating no significant group difference at 5%significance level when adjusted for ties Page 16 Concentrations (mg/L)Parameter:

Zinc Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

46 Percent Non-Detects:

59.7403%Total Background Samples: 13 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1513 8 (61.5385%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002

-ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 0.029 0.029 12/5/2005 0.042 0.042 6/5/2006 0.063 0.063 12/4/2006 0.316 0.316 6/4/2007 0.442 0.442 There are 8 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 13 8 (61.5385%)

7/30/2002-ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 0.034 0.034 12/17/2003 0.023 0.023 6/15/2004 ND<0.01 ND<0.02 12/28/2004

-ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005-0.14250.1425 6/5/2006-0.375 0.375 12/4/2006-ND<0.01 ND<0.02 6/4/2007-0.215 0.215 GWB-6/MW-6 13 9 (69.2308%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 0.02 0.02 6/5/2006 0.083 0.083 12/5/2006 0.028 0.028 Page 17 6/5/2007 0.528 0.528

______

_.,_______**__

- ___'_*.N**.

- '."_'_*_'___

____..___"____",__,,_GWC-13/MW-1313 4 (30.7692%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002 0.023 0.023 10/21/2002 0.027 0.027 12/312002 0.027 0.027 6/24/2003-ND<0.01 ND<0.02 12/17/2003

-ND<0.01 ND<0.02 6/15/2004-ND<0.01 ND<0.02 12/28/2004 0.044 0.044 6/1312005-0.02 0.02 12/6/2005 0.194 0.194 6/5/2006 0.213 0.213 12/4/2006 0.055 0.055 6/4/2007 0.089 0.089 GWC-14/MW-146 5 (83.3333%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002-ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.127 0.127 GWC-5/MW-5 13 8 (61.5385%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.01 ND<0.02 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.032 0.032 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/6/2005 0.055 0.055 6/5/2006 0.1 0.1 1214/2006 0.062 0.062 6/5/2007 0.193 0.193 GWC-17/MW-174 2 (50%)6/15/2005 ND<0.01 ND<0.02 12/6/2005 0.096 0.096 6/5/2006 0.077 0.077 12/5/2006 ND<0.01 ND<0.02 GWC-18/MW-181 1 (100%)6/15/2005 ND<0.01 ND<0.02 GWB-16/MW-1611.

1 (100%)12/5/2006 ND<0.01 ND<0.02 There is 1 unused well Well Samples ND Date Result Original EO-Blank 9 9 (100%)6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004

-ND<0.01 ND<0.02 6/15/2005-ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/6/2006 ND<0.01 ND<0.02.Page 18 12/5/2006 61512007 Page 19 ND<0.01 ND<0.01 ND<0.02 ND<0.02 sum(mx)o-0.0225713

-0.0421709

-0.0599147

-0.076267-0.0914874

-0.105812-0.119282-0.131984-0.143988-0.155347-0.166105-0.176342-0.186043-0.195234-0.20394-0.212179-0.220002-0.227391-0.234358-0.240915-0.247073-0.252843-0.25826-0.263304-0.267981-0.272297-0.276258-0.279897-0.283189

-0.286139-0.28875-0.291025-0.292967-0.294604-0.295911

-0.29689-0.297543-0.297868-0.297868-0.297543

-0.29689

-0.295911

-0.294604-0.292967-0.291025

-0.28875 sum(m A 2)o 5.09463 8.93608 12.0845 14.7585 17.0751 19.1272 20.9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32.3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35.1534 35.1534 35.1545 35.1587 35.1683 35.1854 35.2122 35.2499 35.3017 m(i)o-2.25713-1.95996-1.77438-1.63524

-1.52203-1.4325

-1.34694-1.27024-1.20036

-1.1359-1.07584-1.02365-0.970094-0.919183-0.87055-0.823893-0.782366-0.738846

-0.696684-0.655726

-0.615839-0.576911-0.541736-0.504372-0.467699-0.431644-0.396142-0.363809-0.329206-0.294992

-0.26112-0.227545-0.194225

-0.163659-0.130716-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0.0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

Zinc All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)o 0 1 0.01 2 0.01 3 0.01 4 0.01 5 0.01 6 0.01 7 0.01 8 0.01 9 0.01 10 0.01 11 0.01 12 0.01 13 0.01 14 0.01 15 0.01 16 0.01 17 0.01 18 0.01 19 0.01 20 0.01 21 0.01 22 0.01 23 0.01 24 0.01 25 0.01 26 0.01 27 0.01 28 0.01 29 0.01 30 0.01 31 0.01 32 0.01 33 0.01 34 0.01 35 0.01 36 0.01 37 0.01 38 0.01 39 0.01 40 0.01 41 0.01 42 0.01 43 0.01 44 0.01 45 0.01 46 0.01 Page 20

)47 0.02 0.26112 35.3699-0.283527 48 0.02 0.294992 35.4569-0.277628 49 0.023 0.329206 35.5653-0.270056 50 0.023 0.363809 35.6976-0.261688 51 0.027 0.396142 35.8546-0.250992 52 0.027 0.431644 36.0409-0.239338 53 0.028 0.467699 36.2596-0.226242 54 0.029 0.504372 36.514-0.211616 55 0.032 0.541736 36.8075-0.19428 56 0.034 0.576911 37.1403-0.174665 57 0.042 0.615839 37.5196-0.1488 58 0.044 0.655726 37.9496-0.119948 59 0.055 0.696684 38.4349-0.0816302 60 0.055 0.738846 38.9808-0.0409937 61 0.062 0.782366 39.5929 0.00751297 62 0.063 0.823893 40.2717 0.0594182 63 0.077 0.87055 41.0296 0.126451 64 0.083 0.919183 41.8745 0.202743 65 0.089 0.970094 42.8156 0.289081 66 0.096 1.02365 43.8634 0.387352 67 0.1 1.07584 45.0208 0.494935 68 0.127 1.1359 46.3111 0.639194 69 0.1425 1.20036 47.752 0.810245 70 0.193 1.27024 49.3655 1.0554 71 0.194 1.34694 51.1797 1.31671 72 0.213 1.4325 53.2318 1.62183 73 0.215 1.52203 55.5484 1.94907 74 0.316 1.63524 58.2224 2.4658 75 0.375 1.77438 61.3708 3.13119 76 0.442 1.95996 65.2122 3.9975 Sample Standard Deviation=0.0995987 Numerator=15.98 Denominator

=49.1643=76 65.2122 W Statistic=0.325032 5%Critical value of 0.969 exceeds 0.325032 Evidence of non-normality at 95%level of significance1%Critical value of 0.957 exceeds 0.325032 Evidence of non-normality at 99%level of significance Page 21 Kruskal-Wallis Non-Parametric Test Parameter:

Zinc Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date GWA-15/MW-157/30/2002 9/24/2002 10/21/200212/312002 6124/2003 12/17/2003 611512004 12/28/2004 611412005 12/5/2005 61512006 1214/2006 61412007 Rank Sum=511 Rank Mean=39.3077 Result ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 0.029 0.042 0.063 0.316 0.442 Rank 23.5 23.5 23.5 23.5 23.5 23.5 23.5 23.5 54 57 62 74 76 Background Rank Sum=511 Background Rank Mean=39.3077 Compliance Wells WelllD Date GWA-7/MW-7 7/3012002-9/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 611512004 12/28/2004611412005 12/6/2005615120061214/200661412007-Rank Sum=510 Rank Mean=39.2308 GWB-6/MW-6 7/3012002 9/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 611512004 Result ND<0.01 ND<0.01 ND<0.01 ND<0.01 0.034 0.023 ND<0.01 ND<0.01 ND<0.01 0.1425 0.375 ND<0.01 0.215 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 Rank 23.5 23.5 23.5 23.5 56 49 23.5 23.5 23.5 69 75 23.5 73 23.5 23.5 23.5 23.5 23.5 23.5 23.5 Page 22 12/28/2004 611312005 12/5/2005 61512006 1215/2006 61512007 Rank Sum=452.5 Rank Mean=34.8077 GWC-13/MW-137/30/2002 9/24/2002 10/21/2002 12/312002 6124/200312/17/200361151200412/28/2004 61131200512/6/2005 61512006 1214/2006 61412007 Rank Sum=620 Rank Mean=47.6923 GWC-14/MW-147/30/2002 9/24/200210/21/2002 12/312002 6124/2003 12/17/2003 Rank Sum=185.5 Rank Mean=30.9167 GWC-5/MW-5 7/3012002 9/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 611512004 12128/2004 6/13/2005 12/6/2005 61512006 1214/2006 61512007 Rank Sum=501 Rank Mean=38.5385 GWC-17/MW-176/15/2005 12/6/2005 61512006 1215/2006 Rank Sum=176 Rank Mean=44 ND<0.01 ND<0.01 0.02 0.083 0.028 0.528 ND<0.01 0.023 0.027 0.027 ND<0.01 ND<0.01 ND<0.01 0.044 0.02 0.194 0.213 0.055 0.089 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 0.127 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 0.032 ND<0.01 ND<0.01 ND<0.01 0.055 0.1 0.062 0.193 ND<0.01 0.096 0.077 ND<0.01 23.5 23.5 47 64 53 77 23.5 50 51 52 23.5 23.5 23.5 58 48 71 72 59 65 23.5 23.5 23.5 23.5 23.5 68 23.5 23.5 23.5 23.5 23.5 55 23.5 23.5 23.5 60 67 61 70 23.5 66 63 23.5 Page 23 GWC-18/MW-186/15/2005 Rank Sum=23.5 Rank Mean=23.5 GWB-16/MW-16112/5/2006 Rank Sum=23.5 Rank Mean=23.5 ND<0.01 ND<0.01 23.5 23.5 Calculation Results: Kruskal-Wallis H Statistic=4.37152 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=5.55567 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 4.37152<15.5073 indicating no significant group difference at 5%significance level 5.55567<15.5073 indicating no significant group difference at 5%significance level when adjusted for ties Page 24 Concentrations (mg/L)Parameter:

Mercury Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 50 Total Non-Detect:

42 Percent Non-Detects:

84%Total Background Samples: 9 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-159 8 (88.8889%)

6/24/2003 ND<0.00025 ND<0.0005 12/17/2003 ND<0.00025 ND<0.0005 6/15/2004 ND<0.00025 ND<0.0005 12/28/20040.00040.0004 6/14/2005 ND<0.00025 ND<0.0005 12/5/2005 ND<0.00025 ND<0.0005 6/5/2006 ND<0.00025 ND<0.0005 12/4/2006 ND<0.00025 ND<0.0005 6/4/2007 ND<0.00025 ND<0.0005 There are 8 compliance wells Well Samples NO Date Result Original GWC-13/MW-139 8 (88.8889%)

6/24/2003-0.0005 0.0005 12/17/2003

-ND<0.00025 ND<0.0005 6/15/2004-ND<0.00025 ND<0.0005 12/28/2004 ND<0.00025 ND<0.0005 6/13/2005-ND<0.00025 ND<0.0005 12/6/2005 ND<0.00025 ND<0.0005 6/5/2006 ND<0.00025 ND<0.0005 12/4/2006 ND<0.00025 ND<0.0005 6/4/2007 ND<0.00025 ND<0.0005 GWC-14/MW-142 0(0%)6/24/2003 0.0072 0.0072 12/17/2003 0.01 0.01 GWA-7/MW-7 8 4 (50%)12/17/2003 ND<0.00025 ND<0.0005 6/15/2004 0.0006 0.0006 12/28/2004

-0.0013 0.0013 6/14/2005 ND<0.00025 ND<0.0005 12/6/2005-ND<0.00025 ND<0.0005 6/5/2006-ND<0.00025 ND<0.0005 12/4/2006-0.0012 0.0012 6/4/2007-0.00365 0.00365 GWB-6/MW-6 8 8 (100%)12/17/2003 ND<0.00025 ND<0.0005 6/15/2004 ND<0.00025 ND<0.0005 12/28/2004 ND<0.00025 ND<0.0005 6/13/2005 ND<0.00025 ND<0.0005 12/5/2005 ND<0.00025 ND<0.0005 6/5/2006 ND<0.00025 ND<0.0005 12/5/2006 ND<0.00025 ND<0.0005 6/5/2007 ND<0.00025 ND<0.0005 Page 25 GWC-5/MW-5 8 8 (100%)12/17/2003 6/15/2004 12/28/2004 6/13/2005 12/6/2005 6/5/2006 12/4/2006 6/5/2007 ND<0.00025 ND<0.00025 ND<0.00025 ND<0.00025

ND<0.00025

ND<0.00025 ND<0.00025 ND<0.00025 ND<0.0005 ND<0.0005 ND<0.0005 ND<0.0005 ND<0.0005 ND<0.0005 ND<0.0005 ND<0.0005 GWC-17/MW-17 4 GWC-18/MW-181 GWB-16/MW-1611 There is 1 unused well 4(100%)1 (100%)1 (100%)6/15/2005ND<0.00025 ND<0.0005 12/6/2005 ND<0.00025 ND<0.0005 6/5/2006 ND<0.00025 ND<0.0005 12/5/2006 ND<0.00025 ND<0.00056/15/2005ND<0.00025 ND<0.0005 12/5/2006 ND<0.00025 ND<0.0005 Well Samples ND Date Result Original EQ-Blank 9 9 (100%)6/24/2003 ND<0.00025 ND<0.0005 12/17/2003 ND<0.00025 ND<0.0005 6/15/2004 ND<0.00025 ND<0.0005 12/28/2004

-ND<0.00025 ND<0.0005 6/15/2005-ND<0.00025 ND<0.0005 12/6/2005 ND<0.00025 ND<0.0005 6/6/2006 ND<0.00025 ND<0.0005 12/5/2006 ND<0.00025 ND<0.0005 6/5/2007 ND<0.00025 ND<0.0005 Page 26 Shapiro-Wilks Test of Normality Parameter:

Mercury All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL K=25;Samples=50 i x(i)x(n-i+1)x(n-1+1)-x(i)a(n-i+1) b(i)1 0.00025 0.01 0.00975 0.3751 0.00365723 2 0.00025 0.0072 0.00695 0.2574 0.00178893 3 0.00025 0.00365 0.0034 0.226 0.0007684 4 0.00025 0.0013 0.00105 0.2032 0.00021336 5 0.00025 0.0012 0.00095 0.1847 0.000175465 6 0.00025 0.0006 0.00035 0.1691 5.9185e-005 7 0.00025 0.0005 0.00025 0.1554 3.885e-005 8 0.00025 0.0004 0.00015 0.143 2.145e-005 9 0.00025 0.00025 0 0.1317 0 100.000250.00025 0 0.1212 0 110.000250.00025 0 0.1113 0 12 0.00025 0.00025 0 0.102 0 130.000250.00025 0 0.0932 0 14 0.00025 0.00025 0 00846 0 15 0.00025 0.00025 0 0.0764 0 16 0.00025 0.00025 0 0.0685 0 17 0.00025 0.00025 0 0.0608 0 18 0.00025 0.00025 0 0.0532 0 19 0.00025 0.00025 0 0.0459 0 20 0.00025 0.00025 0 0.0386 0 21 0.00025 0.00025 0 0.0314 0 22 0.00025 0.00025 0 0.0244 0 23 0.00025 0.00025 0 0.0174 0 24 0.00025 0.00025 0 0.0104 0 25 0.00025 0.00025 0 0.0035 0 26 0.00025 0.00025 0 27 0.00025 0.00025 0 280.000250.00025 0 29 0.00025 0.00025 0 30 0.00025 0.00025 0 310.000250.00025 0 32 0.00025 0.00025 0 33 0.00025 0.00025 0 340.000250.00025 0 35 0.00025 0.00025 0 36 0.00025 0.00025 0 370.000250.00025 0 38 0.00025 0.00025 0 39 0.00025 0.00025 0 40 0.00025 0.00025 0 41 0.00025 0.00025 0 42 0.00025 0.00025 0 43 0.0004 0.00025-0.00015 44 0.0005 0.00025-0.00025 45 0.0006 0.00025-0.00035 46 0.0012 0.00025-0.00095 Page 27 47 48 49 50 0.0013 0.00365 0.0072 0.01 0.00025 0.00025 0.00025 0.00025-0.00105-0.0034

-0.00695-0.00975 Sum of b values=0.00672286 Sample Standard Deviation=0.00173025 W Statistic=0.308101 5%Critical value of 0.947 exceeds 0.308101 Evidence of non-normality at 95%level of significance 1%Critical value of 0.93 exceeds 0.308101 Evidence of non-normality at 99%level of significance Page 28 Kruskal-Wallis Non-Parametric Test Parameter:

Mercury Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date GWA-15/MW-156/24/2003 12/17/2003 6/15/2004 12/28/2004 6/14/2005 12/5/2005 6/5/2006 12/4/2006 6/4/2007 Rank Sum=215 Rank Mean=23.8889 Result ND<0.00025 ND<0.00025 ND<0.00025 0.0004 ND<0.00025 ND<0.00025

ND<0.00025 ND<0.00025

ND<0.00025 Rank 21.5 21.5 21.5 43 21.5 21.5 21.5 21.5 21.5 Background Rank Sum=215 Background Rank Mean=23.8889 Compliance Wells WelllD Date Result Rank GWC-13/MW-136/24/2003

-0.0005 44 12/17/2003

-ND<0.00025 21.5 6/15/2004-ND<0.00025 21.5 12/28/2004 ND<0.00025 21.5 6/13/2005-ND<0.00025 21.5 12/6/2005 ND<0.00025 21.5 6/5/2006 ND<0.00025 21.5 12/4/2006 ND<0.00025 21.5 6/4/2007 ND<0.00025 21.5 Rank Sum=216 Rank Mean=24 GWC-14/MW-146/24/2003 0.0072 49 12/17/2003 0.01 50 Rank Sum=99 Rank Mean=49.5 GWA-7/MW-7 12/17/2003 ND<0.00025 21.5 6/15/2004 0.0006 45 12/28/2004

-0.0013 47 6/14/2005 ND<0.00025 21.5 12/6/2005-ND<0.00025 21.5 6/5/2006-ND<0.00025 21.5 12/4/2006-0.0012 46 6/4/2007-0.00365 48 Rank Sum=272 Rank Mean=34 Page 29 GWB-6/MW-6 12/17/2003 611512004 12/28/2004 611312005 12/5/2005 61512006 1215/2006 61512007 Rank Sum=172 Rank Mean=21.5 GWC-5/MW-5 12/17/2003 611512004 12/28/2004 611312005 12/6/2005 61512006 1214/2006 61512007 Rank Sum=172 Rank Mean=21.5 GWC-17/MW-176/15/2005 12/6/2005 61512006 1215/2006 Rank Sum=86 Rank Mean=21.5 GWC-18/MW-186/15/2005 Rank Sum=21.5 Rank Mean=21.5 GWB-16/MW-16112/5/2006 Rank Sum=21.5 Rank Mean=21.5 ND<0.00025 21.5 ND<0.00025 21.5ND<0.0002521.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 ND<0.00025 21.5 Page 30 Critical Value 15.9863 26.5102 16.4783 16.4783 16.4783 20.3786 Calculation Results: Kruskal-Wallis H Statistic=10.0029 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=24.5533 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 10.0029<15.5073 indicating no significant group difference at 5%significance level 24.5533>15.5073 indicating a significant group difference at 5%significance level when adjusted for ties Individual Well Comparisons at 1%Significance Level per Comparison1%Z score is 2.32634 Mean background rank is 23.8889 Well Mean Rank Dif from Bkg GWC-13/MW-1324 0.111111 GWC-14/MW-1449.5 25.6111 GWA-7/MW-7 34 10.1111 GWB-6/MW-6 21.5-2.38889 GWC-5/MW-5 21.5-2.38889 GWC-17/MW-1721.5

-2.38889 GWC-18/MW-1821.5 GWB-16/MW-16121.5

-2.38889

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

-2.38889 GWC-18/MW-1821.5

-2.38889 GWB-16/MW-16121.5

-2.38889 Page 31 Concentrations (mg/L)Parameter:

Chromium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

74 Percent Non-Detects:

96.1039%Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%)7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002

-ND<0,01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/4/2007 ND<0.01 ND<0.02 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%)

7/30/2002-ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004

-ND<0.01 ND<0.02 6/14/2005 ND<0.01 ND<0.02 12/6/2005-ND<0.01 ND<0.02 6/5/2006-ND<0.01 ND<0.02 12/4/2006-ND<0.01 ND<0.02 6/4/2007-0.063 0.063 GWB-6/MW-6 13 13 (100%)7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/5/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02, 12/5/2006 ND<0.01 ND<0.02 Page 32 6/5/2007 ND<0.01 ND<0.02 GWC-13/MW-1313 13 (100%)7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003-ND<0.01 ND<0.02 12/17/2003

-ND<0.01 ND<0.02 6/15/2004-ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005-ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/4/2007 ND<0.01 ND<0.02 GWC-14/MW-146 5 (83.3333%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002-ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02.12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.091 0.091 GWC-5/MW-5 13 12 (92.3077%)

7/30/2002 ND<0.01 ND<0.02 9/24/2002 ND<0.01 ND<0.02 10/21/2002 ND<0.01 ND<0.02 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.01 ND<0.02 12/17/2003 0.028 0.028 6/15/2004 ND<0.01 ND<0.02 12/28/2004 ND<0.01 ND<0.02 6/13/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02 12/4/2006 ND<0.01 ND<0.02 6/5/2007 ND<0.01 ND<0.02 GWC-17/MW-174 4 (100%)6/15/2005 ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/5/2006 ND<0.01 ND<0.02.12/5/2006 ND<0.01 ND<0.02 GWC-18/MW-181 1 (100%)6/15/2005 ND<0.01 ND<0.02 GWB-16/MW-16It 1 (100%)12/5/2006 ND<0.01 ND<0.02 There is 1 unused well Well Samples NO Date Result Original EO-Blank 9 9 (100%)6/24/2003 ND<0.01 ND<0.02 12/17/2003 ND<0.01 ND<0.02 6/15/2004 ND<0.01 ND<0.02 12/28/2004

-ND<0.01 ND<0.02 6/15/2005-ND<0.01 ND<0.02 12/6/2005 ND<0.01 ND<0.02 6/6/2006 ND<0.01 ND<0.02 Page 33 12/5/2006 6/5/2007 Page 34 ND<0.01 ND<0.01 ND<0.02 ND<0.02 sum(mx)o-0.0112856

-0.0210855

-0.0299573

-0.0381335

-0.0457437

-0.0529062

-0.0663756

-0.079078-0.0910816

-0.102441

-0.113199-0.123435-0.133136-0.142328-0.151034-0.159273

-0.167096-0.174485-0.181452-0.188009-0.194167-0.199936-0.205354-0.210397-0.215074-0.219391-0.223352-0.22699-0.230282-0.233232-0.235844-0.238119-0.240061-0.241698-0.243005

-0.243984-0.244636-0.244962-0.244962-0.244636-0.243984-0.243005-0.241698-0.240061-0.238119-0.235844 sum(m A 2)o 5.09463 8.93608 12.0845 14.7585 17.0751 19.1272 20.9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32.3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35.1534 35.1534 35.1545 35.1587 35.1683 35.1854 35.2122 35.2499 35.3017 m(i)o-2.25713-1.95996-1.77438-1.63524

-1.52203

-1.4325-1.34694-1.27024-1.20036

-1.1359-1.07584-1.02365

-0.970094-0.919183

-0.87055-0.823893-0.782366-0.738846

-0.696684-0.655726-0.615839-0.576911

-0.541736-0.504372-0.467699-0.431644-0.396142-0.363809-0.329206-0.294992-0.26112-0.227545-0.194225-0.163659-0.130716-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0.0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

Chromium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1f2 DL Total Sample Size=77 i x(i)o 0 1 0.005 2 0.005 3 0.005 4 0.005 5 0.005 6 0.005 7 0.01 8 0.01 9 0.01 10 0.01 11 0.01 12 0.01 13 0.01 14 0.01 15 0.01 16 0.01 17 0.01 18 0.01 19 0.01 20 0.01 21 0.01 22 0.01 23 0.01 24 0.01 25 0.01 26 0.01 27 0.01 28 0.01 29 0.01 30 0.01 31 0.01 32 0.01 33 0.01 34 0.01 35 0.01 36 0.01 37 0.01 38 0.01 39 0.01 40 0.01 41 0.01 42 0.01 43 0.01 44 0.01 45 0.01 46 0.01 Page 35 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.028 0.063 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911 0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745 42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-0.233232-0.230282-0.22699-0.223352-0.219391

-0.215074

-0.210397-0.205354-0.199936-0.194167

-0.188009-0.181452-0.174485

-0.167096

-0.159273-0.151034-0.142328-0.133136-0.123435

-0.113199-0.102441

-0.0910816

-0.079078-0.0663756

-0.0529062

-0.0385812

-0.0233608

-0.00700848 0.0426741 0.166152 Sample Standard Deviation=0.0112687 Numerator=0.0276064 Denominator

=0.629344=7665.2122 W Statistic=0.0438653 5%Critical value of 0.969 exceeds 0.0438653 Evidence of non-normality at 95%level of significance 1%Critical value of 0.957 exceeds 0.0438653 Evidence of non-normality at 99%level of significance Page 36 Kruskal-Wallis Non-Parametric Test Parameter:

Chromium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-15 7/30/2002 ND<0.01 37.5 9/24/2002 ND<0.01 37.5 10/21/2002

-ND<0.01 37.5 12/3/2002 ND<0.005 37.5 6/24/2003 ND<0.01 37.5 12/17/2003 ND<0.01 37.5 6/15/2004 ND<0.01 37.5 12/28/2004 ND<0.01 37.5 6/14/2005 ND<0.01 37.5 12/5/2005 ND<0.01 37.5 6/5/2006 ND<0.01 37.5 12/4/2006 ND<0.01 37.5 6/4/2007 ND<0.01 37.5 Rank Sum=487.5 Rank Mean=37.5 Background Rank Sum=487.5 Background Rank Mean=37.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002-ND<0.01 37.5 9/24/2002 ND<0.01 37.5 10/21/2002 ND<0.01 37.5 12/3/2002 ND<0.005 37.5 6/24/2003 ND<0.01 37.5 12/17/2003 ND<0.01 37.5 6/15/2004 ND<0.01 37.5 12/28/2004

-ND<0.01 37.5 6/14/2005 ND<0.01 37.5 12/6/2005-ND<0.01 37.5 6/5/2006-ND<0.01 37.5 12/4/2006-ND<0.01 37.5 6/4/2007-0.063 76 Rank Sum=526 Rank Mean=40.4615 GWB-6/MW-6 7/30/2002 ND<0.01 37.5 9/24/2002 ND<0.01 37.5 10/21/2002 ND<0.01 37.5 12/3/2002 ND<0.005 37.5 6/24/2003 ND<0.01 37.5 12/17/2003 ND<0.01 37.5 6/15/2004 ND<0.01 37.5 Page 37 12/28/2004 611312005 12/5/2005 61512006 1215/2006 61512007 Rank Sum=487.5 Rank Mean=37.5 GWC-13/MW-137/30/2002 9/24/2002 10/21/2002 12/312002 6124/200312/17/200361151200412/28/2004 61131200512/6/2005 61512006 1214/2006 61412007 Rank Sum=487.5 Rank Mean=37.5 GWC-14/MW-147/30/2002 9/24/200210/21/2002 12/312002 6124/2003 12/17/2003 Rank Sum=264.5 Rank Mean=44.0833 GWC-5/MW-5 7/3012002 9/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 6115/2004 12/28/2004 611312005 12/6/2005 61512006 1214/2006 61512007 Rank Sum=525 Rank Mean=40.3846 GWC-17/MW-176/15/2005 12/6/2005 61512006 1215/2006 Rank Sum=150 Rank Mean=37.5 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.005 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.005 ND<0.01 0.091 ND<0.01 ND<0.01 ND<0.01 ND<0.005 ND<0.01 0.028 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 ND<0.01 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 77 37.5 37.5 37.5 37.5 37.5 75 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 Page 38 GWC-18/MW-186/15/2005 Rank Sum=37.5 Rank Mean=37.5 GWB-16/MW-16112/5/2006 Rank Sum=37.5 Rank Mean=37.5 ND<0.01 ND<0.01 37.5 37.5 Calculation Results: Kruskal-Wallis H Statistic=0.617351 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=5.49241 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 0.617351<15.5073 indicating no significant group difference at 5%significance level 5.49241<15.5073 indicating no significant group difference at 5%significance level when adjusted for ties Page 39 Concentrations (mg/L)Parameter:

Beryllium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

75 Percent Non-Detects:

97.4026%Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13(100%)7/30/2002 ND<0.002 ND<0.004 9/24/2002 ND<0.002 ND<0.004 10/21/2002

-ND<0.002ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003ND<0.002ND<0.004 1211712003ND<0.002ND<0.004 6/15/2004 ND<0.002 ND<0.004 12/28/2004ND<0.002ND<0.004 6/14/2005 ND<0.002 ND<0.004 12/5/2005 ND<0.002 ND<0.004 6/5/2006ND<0.002ND<0.004 12/4/2006 ND<0.002 ND<0.004 6/4/2007 ND<0.002 ND<0.004 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%)

7/30/2002-ND<0.002 ND<0.004 9/24/2002 ND<0.002 ND<0.004 10/21/2002ND<0.002ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003 ND<0.002 ND<0.004 12/17/2003 ND<0.002 ND<0.004 6/15/2004 ND<0.002 ND<0.004 12/28/2004

-ND<0.002 ND<0.004 6/14/2005 ND<0.002 ND<0.004 12/6/2005-ND<0.002 ND<0.004 6/5/2006-ND<0.002 ND<O.004 12/4/2006-ND<0.002 ND<0.004 6/4/2007-0.004 0.004 GWB-6/MW-6 13 13 (100%)7/30/2002 ND<0.002 ND<0.004 9/24/2002ND<0.002ND<0.004 10/21/2002ND<0.002ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003 ND<0.002 ND<0.004 12/17/2003 ND<0.002 ND<0.004 6/15/2004 ND<0.002 ND<0.004 12/28/2004 ND<0.002 ND<0.004 6/13/2005 ND<0.OO2 ND<0.004 12/5/2005 ND<0.002 ND<0.004 6/5/2006 ND<0.002 ND<0.004 12/5/2006ND<0.002ND<0.004 Page 40 6/5/2007 ND<0.002 ND<0.004 GWC-13/MW-1313 13 (100%)7/30/2002 ND<0.002 ND<0.004 9/24/2002ND<0.002ND<0.004 10/21/2002 ND<0.002 ND<0.004 12/3/2002 ND<0.0015 ND<0.003 6/24/2003-ND<0.002 ND<0.004 12/17/2003

-ND<0.002ND<0.004 6/15/2004-ND<0.002 ND<0.004 12/28/2004 ND<0.002 ND<0.004 6/13/2005-ND<0.002ND<0.004 12/6/2005 ND<0.002 ND<0.004 6/5/2006 ND<0.002 ND<0.004 12/4/2006ND<0.002ND<0.004 6/4/2007 ND<0.002 ND<0.004 GWC-14/MW-146 5 (83.3333%)

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

-ND<0.002 ND<0.004 6/15/2005-ND<0.002 ND<0.004 12/6/2005 ND<0.002 ND<0.004 6/6/2006 ND<0.002 ND<0.004 Page 41 12/5/2006 61512007 Page 42 ND<0.002 ND<0.002 ND<0.004 ND<0.004 Shapiro-Francia Test of Normality Parameter:

Beryllium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)m(i)sum(m A 2)sum(mx)0 0 0 0 0 1 0.0015-2.25713 5.09463-0.00338569 2 0.0015-1.95996 8.93608-0.00632564 3 0.0015-1.77438 12.0845-0.0089872 4 0.0015-1.63524 14.7585-0.0114401 5 0.0015-1.52203 17.0751-0.0137231 6 0.0015-1.4325 19.1272-0.0158719 7 0.002-1.34694 20.9414-0.0185657 8 0.002-1.27024 22.5549-0.0211062 9 0.002-1.20036 23.9958-0.0235069 10 0.002-1.1359 25.286-0.0257787 11 0.002-1.07584 26.4434-0.0279304 12 0.002-1.02365 27.4913-0.0299777 13 0.002-0.970094 28.4324-0.0319179 14 0.002-0.919183 29.2773-0.0337563 15 0.002-0.87055 30.0351-0.0354974 16 0.002-0.823893 30.7139-0.0371451 17 0.002-0.782366 31.326-0.0387099 18 0.002-0.738846 31.8719-0.0401876 19 0.002-0.696684 32.3573-0.0415809 20 0.002-0.655726 32.7873-0.0428924 21 0.002-0615839 33.1665-0.0441241 22 0.002-0.576911 33.4994-0.0452779 23 0.002-0.541736 33.7928-0.0463614 24 0.002-0.504372 34.0472-0.0473701 25 0.002-0.467699 34.266-0.0483055 26 0.002-0.431644 34.4523-0.0491688 27 0.002-0.396142 34.6092-0.0499611 28 0.002-0.363809 34.7416-0.0506887 29 0.002-0.329206 34.85-0.0513471 30 0.002-0.294992 34.937-0.0519371 31 0.002-0.26112 35.0052-0.0524593 32 0.002-0.227545 35.0569-0.0529144 33 0.002-0.194225 35.0947-0.0533029 34 0.002-0.163659 35.1214-0.0536302 35 0.002-0.13071635.1385

-0.0538916 36 0.002-0.0979139 35.1481-0.0540874 37 0.002-0.0652187 35.1524-0.0542179 38 0.002-0.0325917 35.1534-0.0542831 39 0.002 0 35.1534-0.0542831 40 0.002 0.0325917 35.1545-0.0542179 41 0.002 0.0652187 35.1587-0.0540874 42 0.002 0.0979139 35.1683-0.0538916 43 0.002 0.130716 35.1854-0.0536302 44 0.002 0.163659 35.2122-0.0533029 45 0.002 0.194225 35.2499-0.0529144

, 46 0.002 0.227545 35.3017-0.0524593

Page 43 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.004 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911 0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745 42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-0.0519371

-0.0513471

-0.0506887

-0.0499611

-0.0491688

-0.0483055

-0.0473701

-0.0463614

-0.0452779

-0.0441241

-0.0428924

-0.0415809

-0.0401876

-0.0387099

-0.0371451

-0.0354974

-0.0337563

-0.0319179

-0.0299777

-0.0279304

-0.0257787

-0.0235069

-0.0211062

-0.0185657

-0.0158719

-0.0130069

-0.00996279

-0.00669232

-0.00314356 0.00469629 Sample Standard Deviation=0.000353312 Numerator=2.20551e-005 Denominator

=0.000618669

=76 65.2122 W Statistic=0.0356492 5%Critical value of 0.969 exceeds 0.0356492 Evidence of non-normality at 95%level of significance 1%Critical value of 0.957 exceeds 0.0356492 Evidence of non-normality at 99%level of significance Page 44 Kruskal-Wallis Non-Parametric Test Parameter:

Beryllium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002

-ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 ND<0.002 38 6/15/2004 ND<0.002 38 12/28/2004 ND<0.002 38 6/14/2005 ND<0.002 38 12/5/2005 ND<0.002 38 6/5/2006 ND<0.002 38 12/4/2006 ND<0.002 38 6/4/2007 ND<0.002 38 Rank Sum=494 Rank Mean=38 Background Rank Sum=494 Background Rank Mean=38 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002-ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 ND<0.002 38 6/15/2004 ND<0.002 38 12/28/2004

-ND<0.002 38 6/14/2005 ND<0.002 38 12/6/2005-ND<0.002 38 6/5/2006-ND<0.002 38 12/4/2006-ND<0.002 38 6/4/2007-0.004 76 Rank Sum=532 Rank Mean=40.9231 GWB-6/MW-6 7/3012002 ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 ND<0.002 38 6/15/2004 ND<0.002 38 Page 45 12/28/2004 ND<0.002 38 6/13/2005 ND<0.002 38 12/5/2005 ND<0.002 38 6/5/2006 ND<0.002 38 12/5/2006 ND<0.002 38 6/5/2007 ND<0.002 38 Rank Sum=494 Rank Mean=38 GWC-13/MW-137/30/2002 ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003-ND<0.002 38 12/17/2003

-ND<0.002 38 6/15/2004-ND<0.002 38 12/28/2004 ND<0.002 38 6/13/2005-ND<0.002 38 12/6/2005 ND<0.002 38 6/5/2006 ND<0.002 38 12/4/2006 ND<0.002 38 6/4/2007 ND<0.002 38 Rank Sum=494 Rank Mean=38 GWC-14/MW-147/30/2002 ND<0.002 38 9/24/2002-ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 0.004 77 Rank Sum=267 Rank Mean=44.5 GWC-5/MW-5 7/3012002 ND<0.002 38 9/24/2002 ND<0.002 38 10/21/2002 ND<0.002 38 12/3/2002 ND<0.0015 38 6/24/2003 ND<0.002 38 12/17/2003 ND<0.002 38 6/15/2004 ND<0.002 38 12/28/2004 ND<0.002 38 6/13/2005 ND<0.002 38 12/6/2005 ND<0.002 38 6/5/2006 ND<0.002 38 12/4/2006 ND<0.002 38 6/5/2007 ND<0.002 38 Rank Sum=494 Rank Mean=38 GWC-17/MW-176/15/2005 ND<0.002 38 12/6/2005 ND<0.002.38 6/5/2006 ND<0.002 38 12/5/2006 ND<0.002 38 Rank Sum=152 Rank Mean=38 Page 46 GWC-18/MW-186/15/2005 Rank Sum=38 Rank Mean=38 GWB-16/MW-16112/5/2006 Rank Sum=38 Rank Mean=38 ND<0.002 ND<0.002 38 38 Calculation Results: Kruskal-Wallis H Statistic=0.574579 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=7.56781 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 0.574579<15.5073 indicating no significant group difference at 5%significance level 7.56781<15.5073 indicating no significant group difference at 5%significance level when adjusted for ties Page 47 Concentrations (mg/L)Parameter:

Lead Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

75 Percent Non-Detects:

97.4026%Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%)7/30/2002 ND<0.005 ND<0.01 9/24/2002 ND<0.005 ND<0.01 10/21/2002

-ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003 ND<0.005 ND<0.01 12/17/2003 ND<0.005 ND<0.01 6/15/2004 ND<0.005 ND<0.01 12/28/2004 ND<0.005 ND<0.01 6/14/2005 ND<0.005 ND<0.01 12/5/2005 ND<0.005 ND<0.01 6/5/2006 ND<0.005 ND<0.01 12/4/2006 ND<0.005 ND<0.01 6/4/2007 ND<0.005 ND<0.01.There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%)

7/30/2002-ND<0.005 ND<0.01 9/24/2002 ND<0.005 ND<0.01 10/21/2002 ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003 ND<0.005 ND<0.01 12/17/2003 ND<0.005 ND<0.01 6/15/2004 ND<0.005 ND<0.01 12/28/2004

-ND<0.005 ND<0.01 6/14/2005 ND<0.005 ND<0.01 12/6/2005-ND<0.005 ND<0.01 6/5/2006-ND<0.005 ND<0.01 12/4/2006-ND<0.005 ND<0.01 6/4/2007-0.03050.0305 GWB-6/MW-6 13 13 (100%)7/3012002 ND<0.005 ND<0.01 9/24/2002 ND<0.005 ND<0.01 10/21/2002 ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003 ND<0.005 ND<0.01 12/17/2003 ND<0.005 ND<0.01 6/15/2004 ND<0.005 ND<0.01 12/28/2004 ND<0.005 ND<0.01 6/13/2005 ND<0.005 ND<0.01 12/5/2005 ND<0.005 ND<0.01 6/5/2006 ND<0.005 ND<0.01 12/5/2006 ND<0.005 ND<0.01 Page 48 6/5/2007 ND<0.005 ND<0.01......""'*.*,,,,_._**

......*._*.GWC-13/MW-1313 13 (100%)7/30/2002 ND<0.005 ND<0.01 9/24/2002 ND<0.005 ND<0.01 10/21/2002 ND<0.005 ND<0.01 12/3/2002 ND<0.0075 ND<0.015 6/24/2003-ND<0.005 ND<0.01 12/17/2003

-ND<0.005 ND<0.01 6/15/2004-ND<0.005 ND<0.01 12/28/2004 ND<0.005 ND<0.01 6/13/2005-ND<0.005 ND<0.01 12/6/2005 ND<0.005 ND<0.01 6/5/2006 ND<0.005 ND<0.01 12/4/2006 ND<0.005 ND<0.01 6/4/2007 ND<0.005 ND<0.01 GWC-14/MW-146 5 (83.3333%)

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

-ND<0.005 ND<0.01 6/15/2005-ND<0.005 ND<0.01 12/6/2005 ND<0.005 ND<0.01 6/6/2006 ND<0.005 ND<0.01 Page 49 12/5/2006 61512007 Page 50 ND<0,005 ND<0,005 ND<0,01 ND<0,01 sum(mx)o-0.0112856

-0.0210855

-0.0299573

-0.0381335

-0.0457437

-0.0529062

-0.0596409

-0.0659921

-0.0719939

-0.0776734

-0.0830526

-0.0881708

-0.0930213

-0.0976172

-0.10197-0.106089-0.110001-0.113695-0.117179

-0.120458-0.123537-0.126421-0.12913-0.131652-0.13399-0.136149-0.138129-0.139948-0.141594

-0.143069-0.144375-0.145513-0.146484-0.147302-0.147956-0.148445-0.148771-0.148934-0.148934-0.148771-0.148445-0.147956-0.147302-0.146484

-0.145513-0.144375 sum(m A 2)o 5.09463 8.93608 12.0845 14.7585 17.0751 19.1272 20.9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32.3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35.1534 35.1534 35.1545 35.1587 35.1683 35.1854 35.2122 35.2499 35.3017 m(i)o-2.25713-1.95996-1.77438

-1.63524-1.52203-1.4325-1.34694-1.27024

-1.20036-1.1359-1.07584-1.02365-0.970094-0.919183-0.87055-0.823893-0.782366-0.738846-0.696684

-0.655726-0.615839-0.576911-0.541736-0.504372-0.467699-0.431644-0.396142-0.363809-0.329206-0.294992-0.26112-0.227545-0.194225-0.163659-0.130716

-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0.0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

Lead All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)o 0 1 0.005 2 0.005 3 0.005 4 0.005 5 0.005 6 0.005 7 0.005 8 0.005 9 0.005 10 0.005 11 0.005 12 0.005 13 0.005 14 0.005 15 0.005 16 0.005 17 0.005 18 0.005 19 0.005 20 0.005 21 0.005 22 0.005 23 0.005 24 0.005 25 0.005 26 0.005 27 0.005 28 0.005 29 0.005 30 0.005 31 0.005 32 0.005 33 0.005 34 0.005 35 0.005 36 0.005 37 0.005 38 0.005 39 0.005 40 0.005 41 0.005 42 0.005 43 0.005 44 0.005 45 0.005 46 0.005 Page 51 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.0075 0.0075 0.0075 0.0075 0.0075 0.0075 0.015 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911 0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745 42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-0.143069-0.141594-0.139948-0.138129-0.136149-0.13399

-0.131652-0.12913

-0.126421-0.123537-0.120458

-0.117179-0.113695-0.110001

-0.106089-0.10197-0.0976172

-0.0930213

-0.0881708

-0.0830526

-0.0776734

-0.0719939

-0.0659921

-0.0564653

-0.0463633

-0.0356195

-0.0242042

-0.01194 0.00136787

0.0307673 Sample Standard Deviation=0.00315109 Numerator=0.000946626 Denominator

=0.0492111=76 65.2122 W Statistic=0.019236 5%Critical value of 0.969 exceeds 0.019236 Evidence of non-normality at 95%level of significance 1%Critical value of 0.957 exceeds 0.019236 Evidence of non-normality at 99%level of significance Page 52 Kruskal-Wallis Non-Parametric Test Parameter:

Lead Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL KruskalWallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002

-ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 ND<0.005 38 6/15/2004 ND<0.005 38 12/28/2004 ND<0.005 38 6/14/2005 ND<0.005 38 12/5/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/4/2006 ND<0.005 38 6/4/2007 ND<0.005 38 Rank Sum=494 Rank Mean=38 Background Rank Sum=494 Background Rank Mean=38 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002-ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 ND<0.005 38 6/15/2004 ND<0.005 38 12/28/2004

-ND<0.005 38 6/14/2005 ND<0.005 38 12/6/2005-ND<0.005 38 6/5/2006-ND<0.005 38 12/4/2006-ND<0.005 38 6/4/2007-0.0305 77 Rank Sum=533 Rank Mean=41 GWB-6/MW-6 7/3012002 ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 ND<0.005 38 6/15/2004 ND<0.005 38 Page 53 12/28/2004 ND<0.005 38 6/13/2005 ND<0.005 38 12/5/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/5/2006 ND<0.005 38 6/5/2007 ND<0.005 38 Rank Sum=494 Rank Mean=38 GWC-13/MW-13 7/30/2002 ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003-ND<0.005 38 12/17/2003

-ND<0.005 38 6/15/2004-ND<0.005 38 12/28/2004 ND<0.005 38 6/13/2005-ND<0.005 38 12/6/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/4/2006 ND<0.005 38 6/4/2007 ND<0.005 38 Rank Sum=494 Rank Mean=38 GWC-14/MW-14 7/30/2002 ND<0.005 38 9/24/2002-ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 0.015 76 Rank Sum=266 Rank Mean=44.3333 GWC-5/MW-5 7/30/2002 ND<0.005 38 9/24/2002 ND<0.005 38 10/21/2002 ND<0.005 38 12/3/2002 ND<0.0075 38 6/24/2003 ND<0.005 38 12/17/2003 ND<0.005 38 6/15/2004 ND<0.005 38 12/28/2004 ND<0.005 38 6/13/2005 ND<0.005 38 12/6/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/4/2006 ND<0.005 38 6/5/2007 ND<0.005 38 Rank Sum=494 Rank Mean=38 GWC-17/MW-176/15/2005 ND<0.005 38 12/6/2005 ND<0.005 38 6/5/2006 ND<0.005 38 12/5/2006 ND<0.005 38 Rank Sum=152 Rank Mean=38 Page 54 GWC-18/MW-186/15/2005 Rank Sum=38 Rank Mean=38 GWB-16/MW-16112/5/2006 Rank Sum=38 Rank Mean=38 ND<0.005 ND<0.005 38 38 Calculation Results: Kruskal-Wallis H Statistic=0.560773 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=7.38596 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 0.560773<15.5073 indicating no significant group difference at 5%significance level 7.38596<15.5073 indicating no significant group difference at 5%significance level when adjusted for ties Page 55 Concentrations (mg/L)Parameter:

Vanadium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

75 Percent Non-Detects:

97.4026%Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%)7/30/2002 ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002

-ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 ND<0.025 ND<0.05 6/15/2004 ND<0.025 ND<0.05 12/28/2004 ND<0.025 ND<0.05 6/14/2005 ND<0.025 ND<0.05 12/5/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/4/2006 ND<0.025 ND<0.05 6/4/2007 ND<0.025 ND<0.05 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 12 (92.3077%)

7/30/2002-ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 ND<0.025 ND<0.05 6/15/2004 ND<0.025 ND<0.05 12/28/2004

-ND<0.025 ND<0.05 6/14/2005 ND<0.025 ND<0.05 12/6/2005-ND<0.025 ND<0.05 6/5/2006-ND<0.025 ND<0.05 12/4/2006-ND<0.025 ND<0.05 6/4/2007-0.0525 0.0525 GWB-6/MW-6 13 13 (100%)7/30/2002 ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 ND<0.025 ND<0.05 6/15/2004 ND<0.025 ND<0.05 12/28/2004 ND<0.025 ND<0.05 6/13/2005 ND<0.025 ND<0.05 12/5/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/5/2006 ND<0.025 ND<0.05 Page 56 6/5/2007 ND<0.025 ND<0.05**u***

- ___*.'='"'&"__""__>_"*__

__

.'.*._._,..,.",*.

- W',

__"

__

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- GWC-13/MW-1313 13 (100%)7/30/2002 ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003-ND<0.025 ND<0.05 12/17/2003

-ND<0.025 ND<0.05 6/15/2004-ND<0.025 ND<0.05 12/28/2004 ND<0.025 ND<0.05 6/13/2005-ND<0.025 ND<0.05 12/6/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/4/2006 ND<0.025 ND<0.05 6/4/2007 ND<0.025 ND<0.05.GWC-14/MW-146 5 (83.3333%)

7/30/2002 ND<0.025 ND<0.05 9/24/2002-ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 0.06 0.06 GWC-5/MW-5 13 13 (100%)7130/2002 ND<0.025 ND<0.05 9/24/2002 ND<0.025 ND<0.05 10/21/2002 ND<0.025 ND<0.05 12/3/2002 ND<0.005 ND<0.01 6/24/2003 ND<0.025 ND<0.05 12/17/2003 ND<0.025 ND<0.05.6/15/2004 ND<0.025 ND<0.05 12/28/2004 ND<0.025 ND<0.05 6/13/2005 ND<0.025 ND<0.05 12/6/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/4/2006 ND<0.025 ND<0.05 6/5/2007 ND<0.025 ND<0.05 GWC-17/MW-174 4 (100%)6/15/2005 ND<0.025 ND<0.05 12/6/2005 ND<0.025 ND<0.05 6/5/2006 ND<0.025 ND<0.05 12/5/2006 ND<0.025 ND<0.05 GWC-18/MW-181 1 (100%)6/15/2005 ND<0.025 ND<0.05.GWB-16/MW-1611.

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

-ND<0.025 ND<0.05 6/15/2005-ND<0.025 ND<0.05 12/6/2005 ND<0.025 ND<0.05 6/6/2006 ND<0.025 ND<0.05.Page 57 12/5/2006 61512007 Page 58 ND<0.025 ND<0.025 ND<0.05 ND<0.05 sum(mx)o-0.0112856

-0,0210855

-0.0299573

-0.0381335

-0.0457437

-0.0529062

-0.0865797

-0.118336

-0.148345-0.176742-0.203638-0.229229-0.253482-0.276461

-0.298225-0.318822

-0.338381-0.356853-0.37427-0.390663

-0.406059-0.420482-0.434025

-0.446634-0.458327-0.469118-0.479021-0.488117-0.496347-0.503722-0.51025-0.515938-0.520794-0.524885-0.528153

-0.530601-0.532231-0.533046-0.533046-0,532231-0.530601-0.528153-0.524885-0.520794-0.515938-0.51025 sum(mI\2)o 5.09463 8.93608 12.0845 14,7585 17.0751 19,1272 20,9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32,3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35,1534 35.1534 35.1545 35.1587 35.1683 35.1854 35,2122 35.2499 35.3017 m(i)o-2.25713-1.95996-1.77438-1.63524-1.52203

-1.4325-1,34694-1.27024

-1.20036-1,1359-1.07584

-1.02365

-0.970094

-0.87055-0.823893-0.782366-0.738846-0.696684-0.655726-0.615839

-0.576911-0.541736-0.504372

-0.467699

-0.431644

-0.396142

-0.363809-0,329206-0.294992-0.26112-0.227545-0.194225-0.163659-0,130716-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0,0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

Vanadium All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)o 0 1 0.005 2 0.005 3 0.005 4 0.005 5 0.005 6 0.005 7 0.025 8 0,025 9 0.025 10 0.025 11 0.025 12 0.025 13 0.025 14 0.025 15 0,025 16 0.025 17 0.025 18 0.025 19 0.025 20 0,025 21 0.025 22 0.025 23 0.025 24 0,025 25 0.025 26 0.025 27 0.025 28 0.025 29 0.025 30 0.025 31 0.025 32 0.025 33 0.025 34 0.025 35 0.025 36 0.025 37 0.025 38 0.025 39 0.025 40 0,025 41 0.025 42 0.025 43 0,025 44 0.025 45 0.025 46 0.025 Page 59 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.0525 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911.0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745 42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-0.503722

-0.496347-0.488117-0.479021-0.469118-0.458327-0.446634-0.434025-0.420482-0.406059-0.390663-0.37427-0.356853-0.338381-0.318822-0.298225-0.276461-0.253482-0.229229-0.203638

-0.176742-0.148345-0.118336-0.0865797

-0.0529062

-0.0170936 0.0209573 0.0618381 0.106198 0.209096 Sample Standard Deviation=0.00755533 Numerator=0.043721 Denominator

=0.282911=76 65.2122 W Statistic=0.15454 5%Critical value of 0.969 exceeds 0.15454 Evidence of non-normality at 95%level of significance 1%Critical value of 0.957 exceeds 0.15454 Evidence of non-normality at 99%level of significance Page 60 Kruskal-Wallis Non-Parametric Test Parameter:

Vanadium Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date GWA-15/MW-157/30/2002 9/24/2002 10/21/200212/312002 6124/2003 12/17/2003 611512004 12/28/2004 611412005 12/5/2005 61512006 1214/2006 6/4/2007 Rank Sum=494 Rank Mean=38 Background Rank Sum=494 Background Rank Mean=38ComplianceWells WelllD Date GWA-7/MW-7 7/3012002-9/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 611512004 12/28/2004611412005 12/6/2005615120061214/200661412007-Rank Sum=532 Rank Mean=40.9231 GWB-6/MW-6 7/3012002 9/24/2002 10/21/2002 12/312002 6124/2003 12/17/2003 611512004 Result ND<0.025 ND<0.025 ND<0.025 ND<0.005 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 Result ND<0.025 ND<0.025 ND<0.025 ND<0.005 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 ND<0.025 0.0525 ND<0.025 ND<0.025 ND<0.025 ND<0.005 ND<0.025 ND<0.025 ND<0.025 Rank 38 38 38 38 38 38 38 38 38 38 38 38 38 Rank 38 38 38 38 38 38 38 38 38 38 38 38 76 38 38 38 38 38 38 38 Page 61 12/28/2004 ND<0.025 38 6/13/2005 ND<0.025 38 12/5/2005 ND<0.025 38 6/5/2006 ND<0.025 38 12/5/2006 ND<0.025 38 6/5/2007 ND<0.025 38 Rank Sum=494 Rank Mean=38 GWC-13/MW-137/30/2002 ND<0.025 38 9/24/2002 ND<0.025 38 10/21/2002 ND<0.025 38 12/3/2002 ND<0.005 38 6/24/2003-ND<0.025 38 12/17/2003

-ND<0.025 38 6/15/2004-ND<0.025 38 12/28/2004 ND<0.025 38 6/13/2005-ND<0.025 38 12/6/2005 ND<0.025 38 6/5/2006 ND<0.025 38 12/4/2006 ND<0.025 38 6/4/2007 ND<0.025 38 Rank Sum=494 Rank Mean=38 GWC-14/MW-14 7/30/2002 ND<0.025 38 9/24/2002-ND<0.025 38 10/21/2002 ND<0.025 38 12/3/2002 ND<0.005 38 6/24/2003 ND<0.025 38 12/17/2003 0.06 77 Rank Sum=267 Rank Mean=44.5 GWC-5/MW-5 7/30/2002 ND<0.025 38 9/24/2002 ND<0.025 38 10/21/2002 ND<0.025 38 12/3/2002 ND<0.005 38 6/24/2003 ND<0.025 38 12/17/2003 ND<0.025 38 6/15/2004 ND<0.025 38 12/28/2004 ND<0.025 38 6/13/2005 ND<0.025 38 12/6/2005 ND<0.025 38 6/5/2006 ND<0.025 38 12/4/2006 ND<0.025 38 6/5/2007 ND<0.025 38 Rank Sum=494 Rank Mean=38 GWC-17/MW-17 6/15/2005 ND<0.025 38 12/6/2005 ND<0.025 38 6/5/2006 ND<0.025 38 12/5/2006 ND<0.025 38 Rank Sum=152 Rank Mean=38 Page 62 GWC-18/MW-186/15/2005 Rank Sum=38 Rank Mean=38 GWB-16/MW-16112/5/2006 Rank Sum=38 Rank Mean=38 ND<0.025 ND<0.025 38 38 Calculation Results: Kruskal-Wallis H Statistic=0.574579 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=7.56781 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 0.574579<15.5073 indicating no significant group difference at 5%significance level 7.56781<15.5073 indicating no significant group difference at 5%significance level when adjusted for ties Page 63 Concentrations (lJg/L)Parameter:

1, 1-Dichloroethane Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

59 Percent Non-Detects:

76.6234%Total Background Samples: 13 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1513 13 (100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002

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

-ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005-ND<2.5 ND<5 6/5/2006-ND<2.5 ND<5 12/4/2006-ND<2.5 ND<5 6/4/2007-ND<2.5 ND<5 GWB-6/MW-6 13 13 (100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 Page 64 6/5/2007 ND<2.5 ND<5 GWG-13/MW-1313 1 (7.69231%)7/30/2002 ND<2.5 ND<5 9/24/2002 6 6 10/21/2002 6 6 12/3/2002 7 7 6/24/2003-9 9 12/17/2003

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

-ND<2.5 ND<5 6/15/2005-ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/6/2006 ND<2.5 ND<5 Page 65 12/5/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 Trip Blank 4 4 (100%)12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 Page 66 sum(mx)o-5.64282-10.5427

-14.9787-19.0668-22.8718-26.4531-29.8205-32.996

-35.9969-38.8367-41.5263

-44.0854-46.5106

-48.8086-50.985

-53.0447

-55.0006

-56.8477-58.5894-60.2288-61.7684-63.2106-64.565-65.8259-66.9952-68.0743-69.0646-69.9741-70.7972-71.5346-72.1874-72.7563-73.2419-73.651-73.9778

-74.2226-74.3856-74.4671-74.4671-74.3856-74.2226-73.9778

-73.651-73.2419-72.7563-72.1874 sum(m A 2)o 5.09463 8.93608 12.0845 14.7585 17.0751 19.1272 20.9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32.3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35.1534 35.1534 35.1545 35.1587 35.1683 35.1854 35.2122 35.2499 35.3017 m(i)o-2.25713-1.95996-1.77438-1.63524

-1.52203

-1.4325-1.34694-1.27024

-1.20036-1.1359-1.07584-1.02365

-0.970094

-0.919183-0.87055

-0.823893

-0.782366-0.738846-0.696684-0.655726-0.615839

-0.576911-0.541736-0.504372-0.467699-0.431644-0.396142-0.363809-0.329206-0.294992-0.26112-0.227545-0.194225-0.163659-0.130716-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0.0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

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

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)o 0 1 2.5 2 2.5 3 2.5 4 2.5 5 2.5 6 2.5 7 2.5 8 2.5 9 2.5 10 2.5 11 2.5 12 2.5 13 2.5 14 2.5 15 2.5 16 2.5 17 2.5 18 2.5 19 2.5 20 2.5 21 2.5 22 2.5 23 2.5 24 2.5 25 2.5 26 2.5 27 2.5 28 2.5 29 2.5 30 2.5 31 2.5 32 2.5 33 2.5 34 2.5 35 2.5 36 2.5 37 2.5 38 2.5 39 2.5 40 2.5 41 2.5 42 2.5 43 2.5 44 2.5 45 2.5 46 2.5 Page 67 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 6 6 7 9 10 10 13 15 15 16 16 17 18 18 20 20.5 21 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911 0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745 42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-71.5346-70.7972

-69.9741-69.0646

-68.0743-66.9952

-65.8259-64.565-63.2106-61.7684-60.2288-58.5894

-56.8477

-52.4147

-47.7205

-41.9532-34.1183-24.9264

-15.2255-1.91801 14.2195 31.258 50.4637 70.7875 93.6855 119.471 146.867 179.572 215.947 257.106 Sample Standard Deviation=5.92588 Numerator=66103.4 Denominator

=174040=76 65.2122 W Statistic=0.379818 5%Critical value of 0.969 exceeds 0.379818 Evidence of non-normality at 95%level of significance 1%Critical value of 0.957 exceeds 0.379818 Evidence of non-normality at 99%level of significance Page 68 Kruskal-Wallis Non-Parametric Test Parameter:

1, 1-Dichloroethane Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-157/30/2002 ND<2.5 30 9/24/2002 ND<2.5 30 10/21/2002

-ND<2.5 30 12/3/2002 ND<2.5 30 6/24/2003 ND<2.5 30 12/17/2003 ND<2.5 30 6/15/2004 ND<2.5 30 12/28/2004 ND<2.5 30 6/14/2005 ND<2.5 30 12/5/2005 ND<2.5 30 6/5/2006 ND<2.5 30 12/4/2006 ND<2.5 30 6/4/2007 ND<2.5 30 Rank Sum=390 Rank Mean=30 Background Rank Sum=390 Background Rank Mean=30 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/3012002-ND<2.5 30 9/24/2002 ND<2.5 30 10/21/2002 ND<2.5 30 12/3/2002 ND<2.5 30 6/24/2003 ND<2.5 30 12/17/2003 ND<2.5 30 6/15/2004 ND<2.5 30 12/28/2004

-ND<2.5 30 6/14/2005 ND<2.5 30 12/6/2005-ND<2.5 30 6/5/2006-ND<2.5 30 12/4/2006-ND<2.5 30 6/4/2007-ND<2.5 30 Rank Sum=390 Rank Mean=30 GWB-6/MW-6 7/3012002 ND<2.5 30 9/24/2002 ND<2.5 30 10/21/2002 ND<2.5 30 12/3/2002 ND<2.5 30 6/24/2003 ND<2.5 30 12/17/2003 ND<2.5 30 6/15/2004 ND<2.5 30 Page 69 12/28/2004 ND<2.5 30 6/13/2005 ND<2.5 30 12/5/2005 ND<2.5 30 6/5/2006 ND<2.5 30 12/5/2006 ND<2.5 30 6/5/2007 ND<2.5 30 Rank Sum=390 Rank Mean=30 GWC-13/MW-137/30/2002 ND<2.5 30 9/24/2002 6 60 10/21/2002 6 61 12/3/2002 7 62 6/24/2003-9 63 12/17/2003

-20.5 75 6/15/2004-18 72 12/28/2004 16 69 6/13/2005-15 67 12/6/2005 18 73 6/5/2006 15 68 12/4/2006 20 74 6/4/2007 28 77 Rank Sum=851 Rank Mean=65.4615 GWC-14/MW-14 7/30/2002 13 66 9/24/2002-21 76 10/21/2002 17 71 12/3/2002 16 70 6/24/2003 10 64 12/17/2003 10 65 Rank Sum=412 Rank Mean=68.6667 GWC-5/MW-5 7/30/2002 ND<2.5 30 9/24/2002 ND<2.5 30 10/21/2002 ND<2.5 30 12/3/2002 ND<2.5 30 6/24/2003 ND<2.5 30 12/17/2003 ND<2.5 30 6/15/2004 ND<2.5 30 12/28/2004 ND<2.5 30 6/13/2005 ND<2.5 30 12/6/2005 ND<2.5 30 6/5/2006 ND<2.5 30 12/4/2006 ND<2.5 30 6/5/2007 ND<2.5 30 Rank Sum=390 Rank Mean=30 GWC-17/MW-176/15/2005 ND<2.5 30 12/6/2005 ND<2.5 30 6/5/2006 ND<2.5 30 12/5/2006 ND<2.5 30 Rank Sum=120 Rank Mean=30 Page 70 GWC-18/MW-186/15/2005 Rank Sum=30 Rank Mean=30 ND<2.5 30 GWB-16/MW-16112/5/2006 Rank Sum=30 Rank Mean=30 ND<2.5 30 Calculation Results: Kruskal-Wallis H Statistic=38.1247 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=69.2942 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 38.1247>15.5073 indicating a significant group difference at 5%significance level 69.2942>15.5073 indicating a significant group difference at 5%significance level when adjusted for ties Critical Value 20.4136 20.4136 20.4136 25.6865 20.4136 29.7576 54.0092 54.0092 Diffrom Bkg o o 35.4615 38.6667 o o o o Individual Well Comparisons at 1%Significance Level per Comparison1%Z score is 2.32634 Mean background rank is 30 Well Mean Rank GWA-7/MW-7 30 GWB-6/MW-6 30 GWC-13/MW-1365.4615 GWC-14/MW-1468.6667 GWC-5/MW-5 30 GWC-17/MW-1730 GWC-18/MW-1830 GWB-16/MW-16130 Critical Value 22.0439 22.0439 22.0439 27.7379 22.0439 32.1342 58.3226 58.3226 Dif from Bkg o o 35.4615 38.6667 o o o o Individual Well Comparisons at Groupwise 5%Significance Level (0.625%Significance Level per comparison) 0.625%Z score is 2.51213 Mean background rank is 30 Well Mean Rank GWA-7/MW-7 30 GWB-6/MW-6 30 GWC-13/MW-1365.4615 GWC-14/MW-1468.6667 GWC-5/MW-5 30 GWC-17/MW-1730

GWC-18/MW-1830 GWB-16/MW-16130 Page 71 Concentrations (lJg/L)Parameter:

Chlorobenzene Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

70 Percent Non-Detects:

90.9091%Total Background Samples: 13 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1513 13 (100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002

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

-ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005-ND<2.5 ND<5 6/5/2006-ND<2.5 ND<5 12/4/2006-ND<2.5 ND<5 6/4/2007-ND<2.5 ND<5 GWB-6/MW-6 13 13 (100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 Page 72 6/5/2007 ND<2.5 ND<5._**.,*.,*

.**."**......

..__*_,_,**"'.*****,.__.,..

- - - ____

- - '"..........*.,,_,__..

.*.*.

- .==.=*.***_*.*._..*__..__.._._"_......._...

..,...__.___..GWC-13/MW-1313 11 (84.6154%)

7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003-ND<2.5 ND<5 12/17/2003

-ND<2.5 ND<5 6/15/2004-ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005-ND<2.5 ND<5 12/6/2005 4 4 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/4/2007 15 15 GWC-14/MW-146 1 (16.6667%)

7/30/2002 ND<2.5 ND<5 9/24/2002-8 8 10/21/2002 9 9 12/3/2002 10 10 6/24/2003 7 7 12/17/2003 19 19 GWC-5/MW-5 13 13 (100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5\12/17/2003 ND<2.5 ND<5)6/15/2004 ND<2.5 ND<5 co.,:;12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 GWC-17/MW-174 4 (100%)6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 GWC-18/MW-181 1 (100%)6/15/2005 ND<2.5 ND<5 GWB-16/MW-1611 1 (100%)12/5/2006 ND<2.5 ND<5 There are 2 unused wells Well Samples ND Date Result Original EO-Blank 9 9 (100%)6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004

-ND<2.5 ND<5 6/15/2005-ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/6/2006 ND<2.5 ND<5 Page 73 12/5/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 Trip Blank 4 4 (100%)12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 Page 74 sum(mx)o-5.64282-10.5427-14.9787

-19.0668

-22.8718-26.4531-29.8205

-32.996

-35.9969-38.8367-41.5263-44.0854-46.5106

-48.8086-50.985-53.0447

-55.0006

-56.8477-58.5894-60.2288

-61.7684

-63.2106-64.565-65.8259-66.9952-68.0743-69.0646-69.9741

-70.7972

-71.5346

-72.1874

-72.7563-73.2419-73.651

-73.9778-74.2226-74.3856-74.4671-74.4671-74.3856

-74.2226

-73.9778

-73.651-73.2419-72.7563-72.1874 sum(mJ\2)o 5.09463 8.93608 12.0845 14.7585 17.0751 19.1272 20.9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32.3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35.1534 35.1534 35.1545 35.1587 35.1683 35.1854 35.2122 35.2499 35.3017 m(i)o-2.25713-1.95996-1.77438-1.63524

-1.52203-1.4325-1.34694

-1.27024-1.20036-1.1359

-1.07584-1.02365-0.970094-0.919183

-0.87055-0.823893-0.782366

-0.738846-0.696684-0.655726

-0.615839-0.576911-0.541736-0.504372-0.467699-0.431644-0.396142-0.363809-0.329206-0.294992

-0.26112-0.227545-0.194225-0.163659

-0.130716-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0.0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

Chlorobenzene All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)o 0 1 2.5 2 2.5 3 2.5 4 2.5 5 2.5 6 2.5 7 2.5 8 2.5 9 2.5 10 2.5 11 2.5 12 2.5 13 2.5 14 2.5 15 2.5 16 2.5 17 2.5 18 2.5 19 2.5 20 2.5 21 2.5 22 2.5 23 2.5 24 2.5 25 2.5 26 2.5 27 2.5 28 2.5 29 2.5 30 2.5 31 2.5 32 2.5 33 2.5 34 2.5 35 2.5 36 2.5 37 2.5 38 2.5 39 2.5 40 2.5 41 2.5 42 2.5 43 2.5 44 2.5 45 2.5 46 2.5 Page 75 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 4 7 8 9 10 15 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911 0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745 42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-71.5346-70.7972-69.9741-69.0646-68.0743

-66.9952

-65.8259

-64.565-63.2106-61.7684-60.2288-58.5894-56.8477-55.0006-53.0447-50.985-48.8086-46.5106-44.0854-41.5263-38.8367-35.9969

-32.996-29.8205-24.4327-14.4052-2.22889 12.4882 30.232 59.6314 Sample Standard Deviation==2.66847 Numerator==3555.91 Denominator

==35291.3==76 65.2122 W Statistic==0.100759 5%Critical value of 0.969 exceeds 0.100759 Evidence of non-normality at 95%level of significance1%Critical value of 0.957 exceeds 0.100759 Evidence of non-normality at 99%level of significance Page 76 Kruskal-Wallis Non-Parametric Test Parameter:

Chlorobenzene Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-15 7/30/2002 ND<2.5 35.5 9/24/2002 ND<2.5 35.5 10/21/2002

-ND<2.5 35.5 12/3/2002 ND<2.5 35.5 6/24/2003 ND<2.5 35.5 12/17/2003 ND<2.5 35.5 6/15/2004 ND<2.5 35.5 12/28/2004 ND<2.5 35.5 6/14/2005 ND<2.5 35.5 12/5/2005 ND<2.5 35.5 6/5/2006 ND<2.5 35.5 12/4/2006 ND<2.5 35.5 6/4/2007 ND<2.5 35.5 Rank Sum=461.5 Rank Mean=35.5 Background Rank Sum=461.5 Background Rank Mean=35.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002-ND<2.5 35.5 9/24/2002 ND<2.5 35.5 10/21/2002 ND<2.5 35.5 12/3/2002 ND<2.5 35.5 6/24/2003 ND<2.5 35.5 12/17/2003 ND<2.5 35.5 6/15/2004 ND<2.5 35.5 12/28/2004

-ND<2.5 35.5 6/14/2005 ND<2.5 35.5 12/6/2005-ND<2.5 35.5 6/5/2006-ND<2.5 35.5 12/4/2006-ND<2.5 35.5 6/4/2007-ND<2.5 35.5 Rank Sum=461.5 Rank Mean=35.5 GWB-6/MW-6 7/30/2002 ND<2.5 35,5 9/24/2002 ND<2.5 35.5 10/21/2002 ND<2.5 35.5 12/3/2002 ND<2.5 35.5 6/24/2003 ND<2.5 35.5 12/17/2003 ND<2.5 35.5 6/15/2004 ND<2.5 35.5 Page 77 12/28/2004 6/13/2005 12/5/2005 6/5/2006 12/5/2006 6/5/2007 Rank Sum=461.5 Rank Mean=35.5 GWC-13/MW-13 7/30/2002 9/24/2002 10/21/2002 12/3/2002 6/24/200312/17/20036/15/200412/28/2004 6/13/200512/6/2005 6/5/2006 12/4/2006 6/4/2007 Rank Sum=537.5 Rank Mean=41.3462 GWC-14/MW-147/30/2002 9/24/200210/21/2002

12/3/2002 6/24/2003 12/17/2003 Rank Sum=406.5 Rank Mean=67.75 GWC-5/MW-5 7/30/2002 9/24/2002 10/21/2002 12/3/2002 6/24/2003 12/17/2003 6/15/2004 12/28/2004 6/13/2005 12/6/2005 6/5/2006 12/4/2006 6/5/2007 Rank Sum=461.5 Rank Mean=35.5 GWC-17/MW-176/15/2005 12/6/2005 6/5/2006 12/5/2006 Rank Sum=142 Rank Mean=35.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 4 ND<2.5 ND<2.5 15 ND<2.5 8 9 10 7 19 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 71 35.5 35.5 76 35.5 73 74 75 72 77 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 35.5 Page 78 GWC-18/MW-186/15/2005 Rank Sum=35.5 Rank Mean=35.5 ND<2.5 35.5 GWB-16/MW-16112/5/2006 Rank Sum=35.5 Rank Mean=35.5 ND<2.5 35.5 Calculation Results: Kruskal-Wallis H Statistic=11.4714 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=46.1232 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 11.4714<15.5073 indicating no significant group difference at 5%significance level 46.1232>15.5073 indicating a significant group difference at 5%significance level when adjusted for ties Critical Value 20.4136 20.4136 20.4136 25.6865 20.4136 29.7576 54.0092 54.0092 Diffrom Bkg o o 5.84615 32.25 o o o o Individual Well Comparisons at 1%Significance Level per Comparison1%Z score is 2.32634 Mean background rank is 35.5 Well Mean Rank GWA-7/MW-7 35.5 GWB-6/MW-6 35.5 GWC-13/MW-1341.3462 GWC-14/MW-1467.75 GWC-5/MW-5 35.5 GWC-17/MW-1735.5 GWC-18/MW-1835.5

GWB-16/MW-16G5.5 Critical Value 22.0439 22.0439 22.0439 27.7379 22.0439 32.1342 58.3226 58.3226 Diffrom Bkg o o 5.84615 32.25 o o o o Individual Well Comparisons at Groupwise 5%Significance Level (0.625%Significance Level per comparison) 0.625%Z score is 2.51213 Mean background rank is 35.5 Well Mean Rank GWA-7/MW-7 35.5 GWB-6/MW-6 35.5 GWC-13/MW-1341.3462 GWC-14/MW-1467.75 GWC-5/MW-5 35.5 GWC-17/MW-1735.5 GWC-18/MW-1835.5 GWB-16/MW-16135.5 Page 79 Concentrations (lJg/L)Parameter:

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

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

62 Percent Non-Detects:

80.5195%Total Background Samples: 13 There is 1 background well Well Samples ND Date Result Original GWA-15/MW-1513 13 (100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002

-ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/4/2007 ND<2.5 ND<5 There are 8 compliance wells Well Samples ND Date Result Original GWA-7/MW-7 13 13 (100%)7/30/2002-ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004

-ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/6/2005-ND<2.5 ND<5 6/5/2006-ND<2.5 ND<5 12/4/2006-ND<2.5 ND<5 6/4/2007-ND<2.5 ND<5 GWB-6/MW-6 13 13 (100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 Page 80 6/5/2007 ND<2.5 ND<5__,."__

______

__''_>__**<u..=,__._=_._."_..._,-...-..

..

..__*._.__._,._..._,..._""**""*.u.**.**___**

________

.**" GWC-13/MW-1313 4 (30.7692%)

7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003-6 6 12/17/2003

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

....._.*._._.*.*.

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.

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__'_A_""*'*_*'*'*_*,,'00""'" Well Samples NO Date Result Original EO-Blank 9 9 (100%)6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004

-ND<2.5 ND<5 6/15/2005-ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/6/2006 ND<2.5 ND<5 Page 81 12/5/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 Trip Blank 4 4 (100%)12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 Page 82 sum(mx)o-5.64282-10.5427

-14.9787

-19.0668

-22.8718

-26.4531

-29.8205

-32.996-35.9969-38.8367

-41.5263

-44.0854-46.5106-48.8086

-50.985-53.0447-55.0006-56.8477-58.5894

-60.2288

-61.7684

-63.2106

-64.565

-65.8259-66.9952-68.0743-69.0646-69.9741-70.7972-71.5346-72.1874-72.7563-73.2419

-73.651-73.9778-74.2226-74.3856-74.4671

-74.4671-74.3856

-74.2226-73.9778-73.651-73.2419-72.7563-72.1874 sum(m A 2)o 5.09463 8.93608 12.0845 14.7585 17.0751 19.1272 20.9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32.3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35.1534 35.1534 35.1545 35.1587 35.1683 35.1854 35.2122 35.2499 35.3017 m(i)o-2.25713-1.95996-1.77438-1.63524-1.52203-1.4325-1.34694-1.27024-1.20036-1.1359-1.07584-1.02365-0.970094

-0.919183

-0.87055-0.823893-0.782366-0.738846-0.696684-0.655726-0.615839-0.576911-0.541736-0.504372-0.467699-0.431644-0.396142-0.363809-0.329206-0.294992-0.26112-0.227545

-0.194225-0.163659

-0.130716-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0.0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

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

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)o 0 1 2.5 2 2.5 3 2.5 4 2.5 5 2.5 6 2.5 7 2.5 8 2.5 9 2.5 10 2.5 11 2.5 12 2.5 13 2.5 14 2.5 15 2.5 16 2.5 17 2.5 18 2.5 19 2.5 20 2.5 21 2.5 22 2.5 23 2.5 24 2.5 25 2.5 26 2.5 27 2.5 28 2.5 29 2.5 30 2.5 31 2.5 32 2.5 33 2.5 34 2.5 35 2.5 36 2.5 37 2.5 38 2.5 39 2.5 40 2.5 41 2.5 42 2.5 43 2.5 44 2.5 45 2.5 46 2.5 Page 83 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 6 8 8 8 9 9.5 10 10 10 14 16 16 17 18.5 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911 0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745.42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-71.5346-70.7972-69.9741-69.0646

-68.0743-66.9952

-65.8259-64.565-63.2106-61.7684-60.2288-58.5894

-56.8477-55.0006-53.0447-50.985

-45.7617-38.4082-30.6475

-22.4582

-12.7757-1.9847 10.0189 22.7213 36.1907 56.2457 80.5983 106.762 136.926 173.186 Sample Standard Deviation=4.19621 Numerator=29993.3 Denominator

=87268.4=76 65.2122 W Statistic=0.34369 5%Critical value of 0.969 exceeds 0.34369 Evidence of non-normality at 95%level of significance1%Critical value of 0.957 exceeds 0.34369 Evidence of non-normality at 99%level of significance Page 84

" Kruskal-Wallis Non-Parametric Test Parameter:

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

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-15 7/30/2002 ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002

-ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003 ND<2.5 31.5 12/17/2003 ND<2.5 31.5 6/15/2004 ND<2.5 31.5 12/28/2004 ND<2.5 31.5 6/14/2005 ND<2.5 31.5 12/5/2005 ND<2.5 31.5 6/5/2006 ND<2.5 31.5 12/4/2006 ND<2.5 31.5 6/4/2007 ND<2.5 31.5 Rank Sum=409.5 Rank Mean=31.5 Background Rank Sum=409.5 Background Rank Mean=31.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002-ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002 ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003 ND<2.5 31.5 12/17/2003 ND<2.5 31.5 6/15/2004 ND<2.5 31.5 12/28/2004

-ND<2.5 31.5 6/14/2005 ND<2.5 31.5 12/6/2005-ND<2.5 31.5 6/5/2006-ND<2.5 31.5 12/4/2006-ND<2.5 31.5 6/4/2007-ND<2.5 31.5 Rank Sum=409.5 Rank Mean=31.5 GWB-6/MW-6 7/30/2002 ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002 ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003 ND<2.5 31.5 12/17/2003 ND<2.5 31.5 6/15/2004 ND<2.5 31.5 Page 85 12/28/2004 ND<2.5 31.5 6/13/2005 ND<2.5 31.5 12/5/2005 ND<2.5 31.5 6/5/2006 ND<2.5 31.5 12/5/2006 ND<2.5 31.5 6/5/2007 ND<2.5 31.5 Rank Sum=409.5 Rank Mean=31.5 GWC-13/MW-13 7/30/2002 ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002 ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003-6 63 12/17/2003

-14 72 6/15/2004-9.5 68 12/28/2004 8 64 6/13/2005-8 65 12/6/2005 9 67 6/5/2006 8 66 12/4/2006 10 69 6/4/2007 16 73 Rank Sum=733 Rank Mean=56.3846 GWC-14/MW-14 7/30/2002 10 70 9/24/2002-18.5 76 10/21/2002 16 74 12/3/2002 19 77 6/24/2003 10 71 12/17/2003 17 75 Rank Sum=443 Rank Mean=73.8333 GWC-5/MW-5 7/30/2002 ND<2.5 31.5 9/24/2002 ND<2.5 31.5 10/21/2002 ND<2.5 31.5 12/3/2002 ND<2.5 31.5 6/24/2003 ND<2.5 31.5 12/17/2003 ND<2.5 31.5 6/15/2004 ND<2.5 31.5 12/28/2004 ND<2.5 31.5 6/13/2005 ND<2.5 31.5 12/6/2005 ND<2.5 31.5 6/5/2006 ND<2.5 31.5 12/4/2006 ND<2.5 31.5 6/5/2007 ND<2.5 31.5 Rank Sum=409.5 Rank Mean=31.5 GWC-17/MW-176/15/2005 ND<2.5 31.5 12/6/2005 ND<2.5 31.5 6/5/2006 ND<2.5 31.5 12/5/2006 ND<2.5 31.5 Rank Sum=126 Rank Mean=31.5

__

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__.*__*__*__*_.*Page 86 GWC-18/MW-186/15/2005 Rank Sum=31.5 Rank Mean=31.5 ND<2.5 31.5 GWB-16/MW-16112/5/2006 Rank Sum=31.5 Rank Mean=31.5 ND<2.5 31.5 Calculation Results: Kruskal-Wallis H Statistic=28.9143 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=60.489 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 28.9143>15.5073 indicating a significant group difference at 5%significance level 60.489>15.5073 indicating a significant group difference at 5%significance level when adjusted for ties Critical Value 22.0439 22.0439 22.0439 27.7379 22.0439 32.1342 58.3226 58.3226 Critical Value 20.4136 20.4136 20.4136 25.6865 20.4136 29.7576 54.0092 54.0092 Diffrom Bkg o o 24.8846 42.3333 o o o o Dif from Bkg o o 24.8846 42.3333 o o o o Individual Well Comparisons at1%Significance Level per Comparison1%Z score is 2.32634 Mean background rank is 31.5 Well Mean Rank GWA-7/MW-7 31.5 GWB-6/MW-6 31.5 GWC-13/MW-1356.3846 GWC-14/MW-1473.8333

GWC-5/MW-5 31.5 GWC-17/MW-1731.5 GWC-18/MW-1831.5 GWB-16/MW-16131.5 Individual Well Comparisons at Groupwise 5%Significance Level (0.625%Significance Levelpercomparison) 0.625%Z score is 2.51213 Mean background rank is 31.5 Well Mean Rank GWA*7/MW*7 31.5 GWB-6/MW-6 31.5 GWC-13/MW-1356.3846 GWC-14/MW-1473.8333

GWC-5/MW-5 31.5 GWC-17/MW-1731.5 GWC-18/MW-1831.5

GWB-16/MW-161.31.5 Page 87 Concentrations (J,lg/L)Parameter:

Trichlorofluoromethane Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Samples: 77 Total Non-Detect:

46 Percent Non-Detects:

59.7403%Total Background Samples: 13 There is 1 background well Well Samples NO Date Result Original GWA-15/MW-1513 13(100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002

-ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/14/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/4/2007 ND<2.5 ND<5 There are 8 compliance wells Well Samples NO Date Result Original GWA-7/MW-7 13 0(0%)7/30/2002-184.5 184.5 9/24/2002 32 32 10/21/2002 221 221 12/3/2002 210 210 6/24/2003 23 23 12/17/2003 34 34 6/15/2004 46 46 12/28/2004

-144 144 6/14/2005 22 22 12/6/2005-86.5 86.5 6/5/2006-80 80 12/4/2006-155.5 155.5 6/4/2007-112 112 GWB-6/MW-6 13 13 (100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 Page 88 6/5/2007 ND<2.5 ND<5 GWC-13/MW-1313 0(0%)7/30/2002 300 300 9/24/2002 381 381 10/21/2002 348 348 12/3/2002 391 391 6/24/2003-44 44 12/17/2003

-99.5 99.5 6/15/2004-127 127 12/28/2004 81 81 6/13/2005-45.333345.3333 12/6/2005 60 60 6/5/2006 92 92 12/4/2006 104 104 6/4/2007 98 98 GWC-14/MW-146 1 (16.6667%)

7/30/2002 43 43 9/24/2002-47.5 47.5 10/21/2002 31 31 12/3/2002 27 27 6/24/2003 5 5 12/17/2003 ND<2.5 ND<5 GWC-5/MW-5 13 13 (100%)7/30/2002 ND<2.5 ND<5 9/24/2002 ND<2.5 ND<5 10/21/2002 ND<2.5 ND<5 12/3/2002 ND<2.5 ND<5 6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 GWC-17/MW-174 4 (100%)6/15/2005 ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/5/2006 ND<2.5 ND<5 12/5/2006 ND<2.5 ND<5 GWC-18/MW-181 1 (100%)6/15/2005 ND<2.5 ND<5 GWB-16/MW-16It 1 (100%)12/5/2006 ND<2.5 ND<5 There are 2 unused wells Well Samples ND Date Result Original EO-Blank 9 9 (100%)6/24/2003 ND<2.5 ND<5 12/17/2003 ND<2.5 ND<5 6/15/2004 ND<2.5 ND<5 12/28/2004

-ND<2.5 ND<5 6/15/2005-ND<2.5 ND<5 12/6/2005 ND<2.5 ND<5 6/6/2006 ND<2.5 ND<5 Page 89 12/5/2006 ND<2.5 ND<5 6/5/2007 ND<2.5 ND<5 Trip Blank 4 4 (100%)12/17/2003 ND<2.5 ND<5 6/13/2005 ND<2.5 ND<5 12/5/2005 ND<2.5 ND<5 12/4/2006 ND<2.5 ND<5 Page 90 sum(mx)o-5.64282-10.5427

-14.9787

-19.0668-22.8718-26.4531

-29.8205

-32.996-35.9969-38.8367-41.5263

-44.0854-46.5106

-48.8086-50.985-53.0447

-55.0006

-56.8477

-58.5894

-60.2288

-61.7684-63.2106-64.565-65.8259-66.9952-68.0743

-69.0646-69.9741

-70.7972

-71.5346

-72.1874

-72.7563

-73.2419-73.651-73.9778-74.2226-74.3856

-74.4671-74.4671-74.3856

-74.2226

-73.9778

-73.651-73.2419-72.7563

-72.1874 sum(m A 2)o 5.09463 8.93608 12.0845 14.7585 17.0751 19.1272 20.9414 22.5549 23.9958 25.286 26.4434 27.4913 28.4324 29.2773 30.0351 30.7139 31.326 31.8719 32.3573 32.7873 33.1665 33.4994 33.7928 34.0472 34.266 34.4523 34.6092 34.7416 34.85 34.937 35.0052 35.0569 35.0947 35.1214 35.1385 35.1481 35.1524 35.1534 35.1534 35.1545 35.1587 35.1683 35.1854 35.2122 35.2499 35.3017 m(i)o-2.25713

-1.95996

-1.77438

-1.63524-1.52203-1.4325

-1.34694-1.27024-1.20036-1.1359

-1.07584

-1.02365

-0.970094-0.919183-0.87055-0.823893-0.782366

-0.738846

-0.696684

-0.655726-0.615839-0.576911-0.541736-0.504372

-0.467699

-0.431644-0.396142-0.363809-0.329206-0.294992-0.26112-0.227545-0.194225-0.163659

-0.130716-0.0979139

-0.0652187

-0.0325917 o 0.0325917 0.0652187 0.0979139 0.130716 0.163659 0.194225 0.227545 Shapiro-Francia Test of Normality Parameter:

Trichlorofluoromethane All Wells Normality Test of Parameter Concentrations Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Total Sample Size=77 i x(i)o 0 1 2.5 2 2.5 3 2.5 4 2.5 5 2.5 6 2.5 7 2.5 8 2.5 9 2.5 10 2.5 11 2.5 12 2.5 13 2.5 14 2.5 15 2.5 16 2.5 17 2.5 18 2.5 19 2.5 20 2.5 21 2.5 22 2.5 23 2.5 24 2.5 25 2.5 26 2.5 27 2.5 28 2.5 29 2.5 30 2.5 31 2.5 32 2.5 33 2.5 34 2.5 35 2.5 36 2.5 37 2.5 38 2.5 39 2.5 40 2.5 41 2.5 42 2.5 43 2.5 44 2.5 45 2.5 46 2.5 Page 91 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 5 22 23 27 31 32 34 43 44 45.3333 46 47.5 60 80 81 86.5 92 98 99.5 104 112 127 144 155.5 184.5 210 221 300 348 381 0.26112 0.294992 0.329206 0.363809 0.396142 0.431644 0.467699 0.504372 0.541736 0.576911 0.615839 0.655726 0.696684 0.738846 0.782366 0.823893 0.87055 0.919183 0.970094 1.02365 1.07584 1.1359 1.20036 1.27024 1.34694 1.4325 1.52203 1.63524 1.77438 1.95996 35.3699 35.4569 35.5653 35.6976 35.8546 36.0409 36.2596 36.514 36.8075 37.1403 37.5196 37.9496 38.4349 38.9808 39.5929 40.2717 41.0296 41.8745 42.8156 43.8634 45.0208 46.3111 47.752 49.3655 51.1797 53.2318 55.5484 58.2224 61.3708 65.2122-70.8818-64.392-56.8203

-46.9974

-34.717

-20.9044-5.00266 16.6853 40.5217 66.675 95.0036 126.151 167.952 227.059 290.431 361.698 441.788 531.868 628.393 734.852 855.346 999.605 1172.46 1369.98 1618.49 1919.31 2255.68 2746.25 3363.74 4110.48 Sample Standard Deviation=88.9575 Numerator=1.68961 e+007 Denominator

=3.922e+007

=76 65.2122 W Statistic=0.430802 5%Critical value of 0.969 exceeds 0.430802 Evidence of non-normality at 95%level of significance 1%Critical value of 0.957 exceeds 0.430802 Evidence of non-normality at 99%level of significance Page 92 Kruskal-Wallis Non-Parametric Test Parameter:

Trichlorofluoromethane Original Data (Not Transformed)

Non-Detects Replaced with 1/2 DL Kruskal Wallis Ranks Background Wells WelllD Date Result Rank GWA-15/MW-15 7/30/2002 ND<2.5 23.5 9/24/2002 ND<2.5 23.5 10/21/2002

-ND<2.5 23.5 12/3/2002 ND<2.5 23.5 6/24/2003 ND<2.5 23.5 12/17/2003 ND<2.5 23.5 6/15/2004 ND<2.5 23.5 12/28/2004 ND<2.5 23.5 6/14/2005 ND<2.5 23.5 12/5/2005 ND<2.5 23.5 6/5/2006 ND<2.5 23.5 12/4/2006 ND<2.5 23.5 6/4/2007 ND<2.5 23.5 Rank Sum=305.5 Rank Mean=23.5 Background Rank Sum=305.5 Background Rank Mean=23.5 Compliance Wells WelllD Date Result Rank GWA-7/MW-7 7/30/2002-184.5 71 9/24/2002 32 52 10/21/2002 221 73 12/3/2002 210 72 6/24/2003 23 49 12/17/2003 34 53 6/15/2004 46 57 12/28/2004

-144 69 6/14/2005 22 48 12/6/2005-86.5 62 6/5/2006-80 60 12/4/2006-155.5 70 6/4/2007-112 67 Rank Sum=803 Rank Mean=61.7692 GWB-6/MW-6 7/30/2002 ND<2.5 23.5 9/24/2002 ND<2.5 23.5 10/21/2002 ND<2.5 23.5 12/3/2002 ND<2.5 23.5 6/24/2003 ND<2.5 23.5 12/17/2003 ND<2.5 23.5 6/15/2004 ND<2.5 23.5 Page 93 12/28/2004 ND<2.5 23.5 6/13/2005 ND<2.5 23.5 12/5/2005 ND<2.5 23.5 6/5/2006 ND<2.5 23.5 12/5/2006 ND<2.5 23.5 6/5/2007 ND<2.5 23.5 Rank Sum=305.5 Rank Mean=23.5 GWC-13/MW-137/30/2002 300 74 9/24/2002 381 76 10/21/2002 348 75 12/3/2002 391 77 6/24/2003-44 55 12/17/2003

-99.5 65 6/15/2004-127 68 12/28/2004 81 61 6/13/2005-45.3333 56 12/6/2005 60 59 6/5/2006 92 63 12/4/2006 104 66 6/4/2007 98 64 Rank Sum=859 Rank Mean=66.0769 GWC-14/MW-147/30/2002 43 54 9/24/2002-47.5 58 10/21/2002 31 51 12/3/2002 27 50 6/24/2003 5 47 12/17/2003 ND<2.5 23.5 Rank Sum=283.5 Rank Mean=47.25 GWC-5/MW-5 7/30/2002 ND<2.5 23.5 9/24/2002 ND<2.5 23.5 10/21/2002 ND<2.5 23.5 12/3/2002 ND<2.5 23.5 6/24/2003 ND<2.5 23.5 12/17/2003 ND<2.5 23.5 6/15/2004 ND<2.5 23.5 12/28/2004 ND<2.5 23.5 6/13/2005 ND<2.5 23.5 12/6/2005 ND<2.5 23.5 6/5/2006 ND<2.5 23.5 12/4/2006 ND<2.5 23.5 6/5/2007 ND<2.5 23.5 Rank Sum=305.5 Rank Mean=23.5 GWC-17/MW-176/15/2005 ND<2.5 23.5 12/6/2005 ND<2.5 23.5 6/5/2006 ND<2.5 23.5 12/5/2006 ND<2.5 23.5 Rank Sum=94 Rank Mean=23.5 Page 94 GWC-18/MW-186/15/2005 Rank Sum=23.5 Rank Mean=23.5 ND<2.5 23.5 GWB-16/MW-16112/5/2006 Rank Sum=23.5 Rank Mean=23.5 ND<2.5 23.5 Calculation Results: Kruskal-Wallis H Statistic=54.9259 Kruskal-Wallis H Statistic (adjusted for tied non-detects)

=69.804 95%Confidence comparison value is 15.5073 at 8 degrees of freedom 54.9259>15.5073 indicating a significant group difference at 5%significance level 69.804>15.5073 indicating a significant group difference at 5%significance level when adjusted for ties Critical Value 20.4136 20.4136 20.4136 25.6865 20.4136 29.7576 54.0092 54.0092 Diffrom Bkg 38.2692 o 42.5769 23.75 o o o o Individual Well Comparisons at 1%Significance Level per Comparison1%Z score is 2.32634 Mean background rank is 23.5 Well Mean Rank GWA-7/MW-7 61.7692 GWB-6/MW-6 23.5 GWC-13/MW-1366.0769 GWC-14/MW-1447.25 GWC-5/MW-5 23.5 GWC-17/MW-1723.5

GWC-18/MW-1823.5

GWB-16/MW-16123.5 Critical Value 22.0439 22.0439 22.0439 27.7379 22.0439 32.1342 58.3226 58.3226 Diffrom Bkg 38.2692 o 42.5769 23.75 o o o o Individual Well Comparisons at Groupwise 5%Significance Level (0.625%Significance Level per comparison) 0.625%Z score is 2.51213 Mean background rank is 23.5 Well Mean Rank GWA-7/MW-7 61.7692 GWB-6/MW-6 23.5 GWC-13/MW-1366.0769 GWC-14/MW-1447.25

GWC-5/MW-5 23.5 GWC-17/MW-1723.5 GWC-18/MW-1823.5

GWB-16/MW-16123.5 Page 95

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