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Final Status Survey Final Report Phase IV, Appendix A16, Survey Unit Release Record 9508-0000, Pond
	ML063410435
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Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	11/21/2006
From:	Hammond A, Newson C; Connecticut Yankee Atomic Power Co
To:	; NRC/FSME
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'fl Final Status Survey Final Report Phase IV Appendix Al 6 Survey Unit Release Record 9508-0000, Pond November 2006

CYAPCO FINAL STATUS SURVEY RELEASE RECORD POND SURVEY UNIT 9508-0000 Prepared By: Arthur I Havhmond Date: //- 2-oC FSS Engineer Reviewed By: Date: /-Z/-,.b/

FSS Engineer Approved By: Date:_____

Technical Support Manager Revision 0

POND SURVEY UNIT 9508-0000 RELEASE RECORD TABLE OF CONTENTS

1. SURVEY UNIT DESCRIPTION ................................................................ 3

2. CLASSIFICATION BASIS ....................................................................... 3

3. DATA QUALITY OBJECTIVES (DQO) ................................................... 4

4. SURVEY DESIG N ................................................................................... 8

5. SURVEY IMPLEMENTATION .................................................................... 11

6. SURVEY RESULTS ............................................................................... 12

7. QUALITY CONTROL ............................................................................. 14

8. INVESTIGATIONS AND RESULTS ....................................................... 14

9. REMEDIATION AND RESULTS ............................................................ 14

10. CHANGES FROM THE FINAL STATUS SURVEY PLAN ..................... 14

11. DATA QUALITY ASSESSMENT (DQA) ............................................... 15

12. A NO M A LIES .......................................................................................... 15

13. CO NC LUSIO N ........................................................................................ 15

14. ATTACHM ENTS .................................................................................... 16 14.1 Attachment 1 - Figures (4 pages including cover) 14.2 Attachment 2 - Sample and Statistical Data (96 pages including covers)

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POND SURVEY UNIT 9508-0000 RELEASE RECORD SURVEY UNIT DESCRIPTION Survey Unit 9508-0000 (Pond) is designated as Final Status Survey (FSS) Class 3 and consists of approximately 10,831 m2 ( 2.67 acres) of water covered sediment in an area located approximately 0.09 miles from the reference coordinate system benchmark used at the Haddam Neck Plant (HNP) (see Attachment 1, Figure 1). The Pond is man-made and served as a fire suppression reservoir. The pond receives run off from the East Mountain Side and from a trench that is located east of the Radiological Controlled Area (RCA). The trench was isolated prior to FSS activities. The Pond drains to the Connecticut River. The Pond survey unit is bounded as follows: land Survey Area 9506-0000 surrounds the entire pond. The following land surfaces areas are in close proximity to the pond: Survey Area 9504-0000 is to the east, Survey Area 9514-0000 is to the south and Survey Area 9512-0000 is to the west.

The soil (sediment) of this survey area meets the requirements for unrestricted release as a Class 3 survey unit under the criteria and requirements of the HNP License Termination Plan (LTP).

The reference coordinates associated with this survey area are E005 through EO1 1 by S044 through S052 (refer to License Termination Plan Section 5.4.4, Figure 5-2). The reference coordinates provide the maximum dimensions of a rectangle containing this survey unit. Some areas contained in this rectangle may not be part of this survey area. The boundary of the survey area was defined using a Global Positioning System (GPS) based on the Connecticut State Plane System North American Datum (NAD) 1927.

2. CLASSIFICATION BASIS The survey unit was classified in accordance with Procedure RPM 5.1-10, "Survey Unit Classification." The historical information, scoping analyses and characterization results provided sufficient data to designate Survey Unit 9508-0000 as Class 3 in May 2006.

The "Classification Basis Summary" conducted for this survey unit consisted of:

a) A review of the 10CFR50.75 (g) (1) database, b) A review of the "InitialCharacterizationReport" and the "HistoricSite Assessment (HSA) Supplement, "

c) Historic and current survey records review, d) Visual inspections and a "walk-down."

e) Formal or informal interviews with cognizant personnel.

A review of the 10CFR50.75 (g) (1) database report identified no significant events that may have impacted this survey unit.

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POND SURVEY UNIT 9508-0000 RELEASE RECORD A review of the historical documents included the "Results of Scoping Survey",

(performed during late 1997) and the "Historical Site Assessment" which provided some additional information. One sample taken in 1997 indicated a positive Cs-137 detection at a concentration of 0.233pCi/g.

A review of the "Initialand Supplemental CharacterizationReports" as well as the previous "Classification Basis Summaries" provided no additional information pertinent to the classification.

Final characterization was performed by Site Closure personnel in May of 2006 to obtain data of sufficient quality for Final Status Survey (FSS) planning purposes. Eight (8) 1-foot core sediment samples were taken from eight (8) locations. The 1-foot core sediment samples are considered conservative. Since any plant derived activity is presumed to be biased to the upper layers of the sediment core. Seven (7) of the samples were analyzed on-site using gamma spectroscopy. Hard-to-Detect analyses was conducted on one (1) of the eight (8) samples. The only plant-related dosimetrically significant radionuclide identified in the samples was Cesium-137 (refer to Table 1).

Table 1 - Basic Statistical Quantities for Cs-137 from the Characterization Survey Parameter Cs-137 (pCi/g)

Minimum Value: 5.46E-04 Maximum Value: 5.80E-01 Mean: 9.32E-02 Median: 1.42E-02 Standard Deviation: 1.98E-01 Note: The Operational DCGL for Cs-137- 6.01 pCi/g is used in conjunction with the unity rule to achieve 19 mrem/yr TEDE.

The FSS Engineer performed a visual inspection and walk-down during May 2006 to assess the physical condition of the survey unit, evaluate access points and travel paths and identify potentially hazardous conditions.

The final designation was Class 3 based on historical information and the characterization survey data which provided sufficient data to conclude that FSS sample results will be a fraction of the Operational DCGL of 19 mrem/yr.

3. DATA QUALITY OBJECTIVES (DQO)

FSS design and planning is based on the Data Quality Objective (DQO) process as described by the LTP, Procedure RPM 5.1-11, "Preparationof FinalStatus Survey Plan," and the "Multi-Agency Radiation Survey and Site Investigation Manual" (MARSSIM). A summary of the main features of the DQO process is provided herein.

The DQO process incorporates hypothesis testing and probabilistic sampling distributions to control decision errors during data analysis. Hypothesis testing is a process based on the scientific method that compares a baseline condition to Revision 0 4

POND SURVEY UNIT 9508-0000 RELEASE RECORD an alternate condition. The baseline condition is defined as the null hypothesis.

Hypothesis testing rests on the premise that the null hypothesis is true and that sufficient evidence must be provided for rejection. In designing the survey plan, the underlying assumption, or null hypothesis was that residual activity in the survey unit exceeded the release criteria. Rejection of the null hypothesis would satisfy the release criteria objective of the FSS. Probabilistic sampling is a preferred method to select a sample so that each item in the population being studied has a known likelihood of being included in the sample. Probabilistic sampling may include simple random sampling where every sample has the same chance of being included, or systematic random sampling where samples are arranged in some order and a random starting point is selected.

The primary objective of the Final Status Survey Plan (FSSP) was to demonstrate that the level of residual radioactivity in Survey Unit 9508-0000 did not exceed the release criteria specified in the LTP and that the potential dose from residual radioactivity is As Low As Reasonably Achievable (ALARA).

A fundamental precursor to survey design is to establish a relationship between the release criteria and some measurable quantity. This is done through the development of Derived Concentration Guideline Levels (DCGLs). The DCGLs represent average levels of radioactivity above background levels and are presented in terms of surface or mass activity concentrations. Chapter 6 of the LTP describes in detail the modeling used to develop the DCGLs for soil (called Base Case Soil DCGL), existing groundwater radioactivity and for future groundwater radioactivity that will be contributed by building foundations and footings.

As described in detail in the LTP, the dose model applied to the Pond presumes that the Pond sediments are dredged to a depth of three (3) feet and spread for the planting of crops per the Resident Farmer Scenario. Consequently, the soil DCGLs are directly applied to the Pond sediment media which are sampled by coring to a nominal depth of three (3) feet.

The DCGLs presented in Chapter 6 of the LTP were developed for exposures from three (3) components, that is, residual radioactivity in soil, existing groundwater radioactivity, and future groundwater radioactivity from the burial of concrete foundations or footings from site buildings containing residual radioactivity. Equation I shows the mathematical relationship between the three (3) components and the total dose.

Equation 1:

HTotalIHsoil (sediment)+ HExisting GW + HFuture GW The total dose under the LTP criteria is twenty five (25)mrem/yr TEDE from all three (3) components. The allowable total dose under the Connecticut Revision 0 5

POND SURVEY UNIT 9508-0000 RELEASE RECORD Department of Environmental Protection (CTDEP) radiological remediation standard for Connecticut Yankee (CY) is nineteen (19) mrem/yr TEDE. To satisfy both the LTP and CY CTDEP criteria, the dose from soil must be reduced when using the existing and future groundwater dose values discussed above. (reference CY memo ISC 06-024)

This survey unit is not affected by existing or future groundwater. Therefore, the dose contribution from existing and future groundwater is zero (0) mrem/yr TEDE.

Equation 2:

19 mrem/yrTota= 19 mrem/yrsoij+0 mrem/yrExisting Gw+O mrem/yrFuture GW The allowable dose for soil in this survey unit is nineteen (19) mrem/yr TEDE as shown by Equation 2 above. The concentration of residual radioactivity resulting in nineteen (19) mrem/yr TEDE is designated as the Operational DCGL, and has been established for the radionuclides of concern as provided in Table 2. Note: the survey design used a much smaller value for investigation than the Operational DCGL provided by Table 2 to conservatively account for the contribution to the total dose from existing and future groundwater which had not been established at the time of planning the FSS.

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POND SURVEY UNIT 9508-0000 RELEASE RECORD C-14 5.66E+00 4.30E+01 2.26E-01 Mn-54 1.74E+01 1.32E+01 6.96E-01 Fe-55 2.74E+04 2.08E+04 1.10E+03 Co-60 3.81E+00 2.90E+00 1.52E-01 Ni-63 7.23E+02 5.49E+02 2.89E+01 Sr-90 1.55E+00 1.18E+00 6.20E-02 Nb-94 7.12E+00 5.41E+00 2.85E-01 Tc-99 1.26E+01 9.58E+00 5.04E-01 Ag- 108m 7.14E+00 5.43Ea+00 2.86E-01 Cs-134 4.67E+00 3.55E+00 1.87E-01 Cs-137 7.91E+00 6.01E+00 3.16E-01 Eu- 152 1.01E+01 7.68E+00 4.04E-01 Eu-154 9.29E+00 7.06E+00 3.72E-01 Eu-155 3.92E+02 2.98E+02 1.57E+01 Pu-238 2.96E+O I 2.25E+01 1.1 8E+00 Pu-239/240 2.67E+01 2.03E+01 1.07E+00 Pu-241 8.70E+02 6.61E+02 3.48E+01 Am-241 (51 2.58E+01 1.96E+01 1.03E+00 Cm-243/244 2.90E+01 2.20E+01 1.16E+00 (1) Bold indicates those radionuclides considered to be Hard to Detect (HTD)

(2) The Base Case Soil DCGLs for soil are specified by the LTP in Chapter 6 and are equivalent to 25 mrem/yr TEDE (3) The Operational DCGL is equivalent to 19 mrem/yr TEDE (4) The required MDC is equivalent to I mrem/yr TEDE (5) Americium-241 can be analyzed by gamma and alpha spectroscopy and is considered to be Easy to Detect (ETD). The preferred result is the alpha spectroscopy's when both analyses are performed.

Another important facet of the DQO process is to identify the radionuclides of concern and determine the concentration variability. Characterization was performed in May of 2006 as discussed in Section 2. Cs-137 was found to be the only radionuclide of concern. The basic statistical quantities (i.e., mean, standard deviation, median) for Cs-137 are provided in Table 1.

Laboratory DQOs and analysis results were to be reported as actual calculated results. Results reported as less than Minimum Detectable Concentration

(<MDC) would not be accepted for FSS. Sample report summaries were to include unique sample identification, analytical method, radionuclide, result, Revision 0 7

POND SURVEY UNIT 9508-0000 RELEASE RECORD and uncertainty of two standard deviations, laboratory data qualifiers, units, and the required and observed MDC.

4. SURVEY DESIGN The level of effort associated with planning a survey is based on the complexity of the survey and nature of the hazards. Guidance for preparing FSS plans is provided in Procedure RPM 5.1-11, "Preparationof Final Status Survey Plans". By design, the FSSP meets the ALARA criteria for soils as specified in Chapter 4 of the LTP.

This survey was initially designed to ten (10) mrem/yr TEDE. At the time when the survey was designed, the dose contribution for existing and future groundwater had not yet been determined. Subsequently, a conservative value was chosen for the Operational DCGL. This approach is no longer required as the total dose from existing and future groundwater has been established. The dose for soil used in this survey area to demonstrate compliance with the LTP criteria is nineteen (19) mrem/yr TEDE, as discussed in Section 3 of this Release Record.

Characterization was performed by Site Closure personnel in May 2006 to determine existing conditions and obtain radiological data for Final Status Survey (FSS). The DQO process determined that Cs-137 would be the radionuclide of concern (refer to Section 3). Other radionuclides identified during FSS would be evaluated to ensure adequate survey design and compliance with the unity rule.

Surrogate DCGLs were not required for this survey unit based on process knowledge from FSS of nearby adjacent areas and via screening under LTP Section 5.4.7.2, "Gross Activity DCGLs". Radionuclide screening or de-selection is a process where an individual radionuclide or aggregate may be considered insignificant and eliminated from the FSS. The criteria for de-selection are concentrations less than 5% for individual radionuclides and less than 10% for aggregates.

The Elevated Measurement Comparison (EMC) did not apply to this survey unit since the survey unit is a Class 3 and discrete, elevated areas of contamination were not expected.

The Sign Test was selected as the non-parametric statistical test to demonstrate that the null hypothesis was rejected. The use of the Sign Test did not require the selection or use of a background reference area, which simplified survey design and implementation. In addition, this approach was conservative since it included background Cs-137 as part of the sample set.

The number of soil samples for FSS was determined in accordance with Procedure RPM 5.1-12, "Determinationof the Number of Samples for Final Status Survey. " The Lower Bound of the Gray Region (LBGR) was set in accordance with Procedure RPM 5.1-11 to 2.76 pCi/g Cs-137 to maintain the Revision 0 8 Revision 0 8

POND SURVEY UNIT 9508-0000 RELEASE RECORD relative shift (A/a) in the range of 1 and 3. The resulting relative shift was 2. A Prospective Power Curve was generated using COMPASS, a software package developed under the sponsorship of the United States Nuclear Regulatory Commission (USNRC) for implementation of MARSSIM in support of the decommissioning license termination rule (10 CFR 20, Subpart E). The result of the COMPASS computer run showed adequate power for the survey design.

This indicates that the survey area has a high probability of rejecting the null hypothesis, assuming that the characterization data are representative of the FSS results. Survey design specified fifteen (15) soil samples for non-parametric statistical testing.

The grid pattern and locations of the soil samples were determined using Visual Sample Plan (VSP) in accordance with Procedure RPM 5.1-14, "Identifying, and Marking Surface Sample Locations for Final Status Survey. " Visual Sample Plan was created by Pacific Northwest National Laboratory (PNNL) for the United States Department of Energy. A random grid pattern with a random starting point was selected for sample design, which is appropriate for a Class 3 area.

Sample locations were identified using AutoCAD-LT, a commercially available plotting software package with coordinates consistent with the Connecticut State Plane System. These coordinates were integrated with a GPS to locate sample locations in the field. Sample Measurement Locations for the design are listed with the GPS coordinates in Table 3.

"Table 3 -Sample asure ocatiowNth Assoceatel GPS Coonfhnates D'esignation Northuing . Easting 9508-0000-001F 237159.00 667889.93 9508-0000-002F 237254.58 667782.11 9508-0000-003F 237134.76 667709.89 9508-0000-004F 237130.66 667550.21 9508-0000-005F 237068.03 667726.34 9508-0000-006F 237131.77 667933.74 9508-0000-007F 237211.00 667880.48 9508-0000-009F 237322.96 667651.33 9508-0000-01OF 237040.26 667830.43 9508-0000-011 F 237167.86 667656.29 9508-0000-012F 237151.39 667859.20 9508-0000-013F 237232.27 667639.39 9508-0000-014F 237275.49 667698.17 9508-0000-015F 236983.93 667759.73 9508-0000-016F 237159.40 667891.35 The sample location designations of Table 3 are not sequentially inclusive because of the necessity to relocate a sample due to the inaccessibility of the original sample location. Sample location 9508-0000-008F was found to be on Revision 0 9 Revision 0 9

POND SURVEY UNIT 9508-0000 RELEASE RECORD dry land. Consequently, it was randomly relocated using VSP software to one (1) new location designated as 9508-0000-016F.

There were two (2) sediment cores taken as judgmental samples. The locations were selected based on the proximity to the outfall of two (2) culverts one which drains from a trench, located at the base of the East Mountain Side and east of the RCA, into the pond and one which drains from the southwest section of the pond to the Connecticut River.

Although Procedure RPM 5.1-11 only specified that 5% of the samples be selected for HTD analysis, two (2) soil samples were analyzed for HTDs, exceeding the required percentage. The two (2) samples that were tested were randomly selected for HTD radionuclide analysis using the Microsoft Excel "RAND" function. Each sample was sent off-site for a full suite analysis of the HTD radionuclides specified in Table 2.

The implementation of survey specific quality control measures as referenced by Procedure RPM 5.1-24, "Split Sample Assessment for Final Status Survey,"

included the collection of two (2) soil samples for "split sample" analysis by the off-site laboratory. These locations were selected randomly using the Microsoft Excel "RAND" function. The number of quality control samples exceeded the 5 % requirement.

The LTP specifies that scanning is not required for the FSS of the Pond. Table 4 provides a synopsis of the survey design.

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POND SURVEY UNIT 9508-0000 RELEASE RECORD Based on AutoCAD-LT Survey Unit Land Area 10,831 m2 and Visual Sample Plan calculations Type I and Type 2 errors were 0.05, sigma was 0.198 pCi/g Cs-137 the LBGR was adjusted to to Number of Measurements 15 2.76 wa/ Csted 2.76 pC i/g Cs- 13)7 to maintain Relative Shift in the range of 1 and 3, Relative Shift was 2 Grid Spacing NA Based on random grid Design DCGL 3.16 pCi/g Cs- 137 To achieve 10 mrem/yr TEDE To achieve 19 mrem/yr Operational DCGL 6.01 pCi/g Cs-137 TEDE (2)to demonstrate compliance with Equation 2 of this Release Record Scan Coverage N/A The LTP exempts this area Sediment Investigation 6.01 pCi/g Cs- 137 TheOperational DCGL Level meets the LTP criteria for a Class 3 survey unit (1) The survey design used a much smaller value for investigation than the Operational DCGL provided by Table 2 as the total dose from existing and future groundwater had not been established at the time of planning the FSS (2) The allowable dose for soil in this survey unit is 19 mrem/yr TEDE as the bounding dose from existing and future groundwater has been established based on field data (reference CY memo ISC 06-024.)

5. SURVEY IMPLEMENTATION Final Status Survey field activities were conducted under Work Plan and Inspection Record (WP&IR) 2006-0027. The WP&IR package included a detailed FSSP, job safety analysis, job planning checklist and related procedures for reference. Daily briefings were conducted to discuss the expectations for job performance and the safety aspects of the survey. The "Daily Survey Journal" was used to document field activities and other information pertaining to the FSS.

Using GPS coordinates, sample measurement locations were identified in NAD 1927 coordinates that were supplied to the sampling vendor, Ocean Surveys Inc. (OSI) of Old Saybrook, Connecticut. Pond sampling was accomplished using direct push technology to collect composite samples of bottom and average high water mark sediments. Sediment cores from the Pond were obtained by OSI using a vibrating corer that was platform mounted on a sampling vessel. The core barrel was a three (3) inch diameter thin-Revision 0 IlI Revision 0 11

POND SURVEY UNIT 9508-0000 RELEASE RECORD walled aluminum tube which also served as a core liner (ten feet or less). A core catcher was available to prevent the sample from sliding out of the bottom of the tube. Vessel positioning and the determination of sample locations were accomplished using a global positioning system (GPS) interfaced with a navigation and data logging system. The FSS plan provided a map and GPS positions to Ocean Surveys, Inc. for the as-desired locations for core borings.

After extraction, the water was drained from above the sample by drilling holes above the sediment. The liner was cut, capped, sealed, labeled and turned over from the Ocean Surveys, Inc. to site personnel who processed and controlled the samples under Chain-of-Custody (COC). Rinsing of the barrel and associated equipment was performed between sampling events. New aluminum tubes were used for each sample to prevent cross-contamination of subsequent samples.

Seventeen (17) sediment samples were collected and packaged in accordance with Haddam Neck Plant (HNP) Procedure RPM 5.1-3, "Collection of Sample Mediafor FinalStatus Survey" and FSS design.

Samples were controlled, transported, stored, and transferred to the off-site laboratory using Chain-of-Custody (COC) protocol in accordance with Procedure RPM 5.1-5, "Chain of Custody for FinalStatus Survey Samples. "

Two (2) samples 9508-0000-002F and 9508-0000-014F were selected, at random, for HTD radionuclide analysis by the off-site laboratory.

Two (2) biased sediment samples 9508-0000-017F and 9508-0000-018F were collected and analyzed by the offsite laboratory for gamma spectroscopy.

The implementation of survey specific quality control measures included the collection of two (2) split samples at locations 9508-0000-006F and 9508-0000-012F for "split sample" analysis by the off-site laboratory.

6. SURVEY RESULTS The off-site laboratory employed for the radiological analyses of samples was General Engineering Laboratories (GEL) - Charleston, South Carolina. The laboratory analyzed the fifteen (15) samples taken for non-parametric statistical testing and the associated duplicates using gamma spectroscopy. Gamma spectroscopy analysis was performed to the required MDC. Gamma spectroscopy results identified some radionuclides meeting the acceptance criteria for detection (i.e., a result greater than two standard deviations uncertainty). All could be de-selected or excluded using the 5% and 10% rule described in Section 4.

Cesium-137 was identified in ten (10) of the fifteen (15) samples.

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POND SURVEY UNIT 9508-0000 RELEASE RECORD None of the samples exceeded the Operational DCGL. Gamma spectroscopy sample analysis did not require further investigation. A summary of the sample results is provided in Table 5.

0U8-UUUU-UU00 -1 .2FI-U -6. /Ui-U4 9508-0000-002F 1.I OE-02 1.80E-03 9508-0000-003F 1.76E-01 2.93E-02 9508-0000-004F 1.1OE-02 1.83E-03 9508-0000-005F 9.76E-01 1.62E-01 9508-0000-006F 2.68E-02 4.46E-03 9508-0000-007F 1.16E-01 1.93E-02 9508-0000-009F 3.36E-02 5.59E-03 9508-0000-01OF 2.03E-02 33.38E-03 9508-0000-011 F 1.85E-01 3.08E-02 9508-0000-012F 4.79E-02 7.97E-03 9508-0000-013F 8.02E-02 1.33E-02 9508-0000-014F 2.23E-01 3.71 E-02 9508-0000-015F 2.61E-02 4.34E-03 9508-0000-016F -2.99E-04 -4.97E-05

("The Operational DCGLs from Table 2 is 6.01 pCi/g for Cs-137 these are used in conjunction with the unity rule to achieve 19 mrem/vr TEDE.

The off-site laboratory also processed two (2) samples for HTD analyses as required by the sample plan. The requested analyses included alpha spectroscopy, gas proportional counting, and liquid scintillation depending on the radionuclide and the measurement method. Gamma spectroscopy results identified some radionuclides meeting the acceptance criteria for detection (i.e.,

a result greater than two standard deviations uncertainty). All could be de-selected or excluded using the 5% and 10% rule described in Section 4. All analyses met the required MDC.

Two (2) biased samples were collected at locations selected by FSS Supervision based on professional judgment and observation. Gamma spectroscopy analysis was performed by the off-site laboratory to the required MDC. The samples were a very small fraction of the Operational DCGL. No further action or investigations were required. A summary of the sample results is provided in Table 6.

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POND SURVEY UNIT 9508-0000 RELEASE RECORD

~T2 l 6 - bised Samn IleResults~

Sample Number Cs~-137 j~/ F~raction of the, I. -9 cra tiqnaIkDC.G'LP.

9508-0000-017F 1.14E-02 1.90E-03 9508-0000-018F 2.29E-02 4.1OE-03 The Operational DCGLs from Table 2 is 6.01 pCi/g for Cs-137 these are used in conjunction with the unity rule to achieve 19 mrem/yr TEDE

7. QUALITY CONTROL The off-site laboratory processed the split samples and performed gamma spectroscopy analysis. The data was evaluated using USNRC acceptance criteria specified in Inspection Procedure 84750 as detailed in HNP Procedure RPM 5.1-24, "Split Sample Assessment for Final Status Survey. " There was acceptable agreement between the field split results for both of the "split sample" pairs tested.

The sample analysis vendor, General Engineering Laboratories (GEL) -

Charleston, South Carolina, maintains quality control and quality assurance plans as part of normal operation. Refer to Attachment 2 for data and data quality analysis results.

8. INVESTIGATIONS AND RESULTS Sample investigation levels were not exceeded for this unit. Consequently, no investigations were performed.

9. REMEDIATION AND RESULTS Historically, no radiological remedial action as described by MARSSIM Section 5.4 was performed in this survey unit prior to or as a result of the FSS. Health Physics TSD BCY-HP-0078, "ALARA Evaluation of Soil Remediation in Support of Final Status Survey, " determined that remediation beyond that required to meet the release criteria to be unnecessary and that the remaining residual radioactivity in soil was ALARA.

10. CHANGES FROM THE FINAL STATUS SURVEY PLAN The survey was designed to ten (10) mrem/yr TEDE which was conservative and necessary at the time of FSS planning. It is no longer required as the total dose from existing and future groundwater has been established. The dose for soil used to demonstrate compliance with the LTP criteria is nineteen (19) mrem/yr TEDE as discussed in Section 2 of this Release Record.

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POND SURVEY UNIT 9508-0000 RELEASE RECORD

11. DATA QUALITY ASSESSMENT (DQA)

The DQO sample design and data were reviewed in accordance with Procedure RPM 5.1-23, "Data Quality Assessment," for completeness and consistency.

The sampling design had adequate power as indicated by the Retrospective Power Curve. The Sign Test was performed on the data and compared to the original assumptions of the DQOs. The Sign Test shows that the survey unit passes FSS.

Documentation was complete and legible. Surveys and sample collection were consistent with the DQOs and were sufficient to ensure that the survey unit was properly designated as Class 3.

The preliminary data review consisted of calculating basic statistical quantities (e.g., mean, median, standard deviation).

The sample standard deviation was slightly more than the value used for the survey design. This is represented by the shift in the retrospective power curve as shown in Attachment 2f. This would indicate a change to the original LBGR to maintain the number of samples at fifteen to meet the Operational DCGL.

However, the value of LBGR is less of a critical issue as the survey unit has passed the statistical test, and the mean and median values are well below the Operational DCGL when used in conjunction with the unity rule. Also, the retrospective power curve shows that a sufficient number of samples were collected to achieve the desired power. Therefore, the survey unit meets the release criteria with adequate power as required by the DQOs.

The range of the data, about 3.99 standard deviations. The difference between the mean and median was 38.6% of the standard deviation which indicates some skewness in the data. The data was represented graphically through posting plots, a frequency plot, and a quantile plot. The frequency plot shows some positive skewness as confirmed by the calculated skew of 3.32.

All data, assessments, and graphical representations are provided in Attachment 2.

12. ANOMALIES No anomalies were noted in the performance of this FSS.

13. CONCLUSION Survey Unit 9508-0000 has met the final DQOs of the FSS. The ALARA criteria for soils as specified in Chapter 4 of the LTP were achieved. Elevated Measurement Comparison and remediation were not required.

The sample data passed the Sign Test. The null hypothesis was rejected.

Graphical representation of data indicates some positive skewness that is probably due to the differences in terrain and the collection of runoff. The Revision 0 15

POND SURVEY UNIT 9508-0000 RELEASE RECORD Retrospective Power Curve generated using COMPASS shows adequate power was achieved. The survey unit was properly designated as Class 3.

The dose contribution from soil is 0.406 mrem/yr TEDE based on the average concentration of the samples used for non-parametric statistical sampling.

This survey unit is not affected by existing groundwater (reference CY memo ISC 06-024). The dose contribution from existing groundwater is zero (0) mrem/yr TEDE.

This survey unit is not considered impacted by future groundwater radioactive contamination, as there are no concrete foundations or footings containing residual radioactive material within the groundwater saturated zone in the area (reference CY memo ISC 06-024). The dose contribution from future groundwater, the third dose component, is therefore zero (0) mrem/yr TEDE.

The average total dose from residual radioactivity in this survey unit is 0.406 mrem/yr Total Effective Dose Equivalent (TEDE).

14. ATTACHMENTS 14.1 Attachment 1 - Figures 14.2 Attachment 2 - Sample and Statistical Data Revision 0 16

POND SURVEY UNIT 9508-0000 RELEASE RECORD Attachment 1 Figures (3 pages)

Locaton 700c~ 1400

.. IOMRFW~

P OF Date By Connecticut Yankee Atomic PowerCompany Figure 1 9508-0000FinalSttus Survey Design October2006 A. Hammond

POND SURVEY UNIT 9508-0000 RELEASE RECORD Attachment 2 Sample and Statistical Data

POND SURVEY UNIT 9508-0000 RELEASE RECORD Attachment 2a Sample Data (81 Pages)

Table of Contents General Narrative .................................................................. I Chain of Custody and Supporting Documentation ........... 4 Radiological Analysis .......................................................... 8 Sample Data Summary ...................................................... 29 Q uality C ontrol D ata ........................................................... 71

General Narrative 1

CASE NARRATIVE For CONNECTICUT YANKEE RE: Sediment PO# 002332 Work Order: 166485 SDG: MSR #06-0958 July 19, 2006 Laboratory Identification:

General Engineering Laboratories, LLC Mailing Address:

P.O. Box 30712 Charleston, South Carolina 29417 Express Mail Delivery and Shipping Address:

2040 Savage Road Charleston, South Carolina 29407 Telephone Number:

(843) 556-8171 Summary:

Sample receipt The sample(s) for this Project arrived at General Engineering Laboratories, LLC, (GEL) in Charleston, South Carolina on July 6, 2006. All sample containers arrived without any visible signs of tampering or breakage. The chain of custody contained the proper documentation and signatures.

The laboratory received the following sample(s):

Sample ID Client Sample ID 166485001 9508-0000-014F 166485002 9508-0000-002F 166485003 9508-0000-016F 166485004 9508-0000-017F 166485005 9508-0000-018F 166485006 9508-0000-001 F 166485007 9508-0000-009F 166485008 9508-0000-012F 166485009 9508-0000-013F 166485011 9508-0000-003F 166485012 9508-0000-004F 2

166485013 9508-0000-005F 166485014 9508-0000-006F 166485015 9508-0000-007F 166485016 9508-0000-01OF 166485017 9508-0000-01 1F 166485018 9508-0000-015F 166485019 9508-0000-006FS Items of Note:

There are no items of note.

Case Narrative:

Sample analyses were conducted using methodology as outlined in General Engineering Laboratories (GEL) Standard Operating Procedures. Any technical or administrative problems during analysis, data review, and reduction are listed below by analytical parameter.

Analytical Request:

Seventeen sediment samples were analyzed for FSSGAM.

Two sediment samples were analyzed for FSSALL.

Internal Chain of Custody:

Custody was maintained for the sample(s).

Data Package:

The enclosed data package contains the following sections: Case Narrative, Chain of Custody and Supporting Documentation and all analytical fractions.

I certify that this data package is in compliance with the SOW, both technically and for completeness, for other than the conditions detailed above. Release of the data contained in this hard copy data package has been authorized by the Laboratory Manager or a designee, as verified by the following signature.

Cheryl Jones Project Manager 3

Chain of Custody And Supporting Documentation 4

Health Physics Procedure CiPP-GGGR-R5104-003-Attachraent B-CY-00 I Major Healh Pysis Pocedre 1 PPGGG-R5 04-03-ttahmen B-Y-0 I ajo Chain of Custody Form No. 2006-00445 Connecticut Yankee Atomic Power Company 362 Injun Hollow Road, East Hampton, CT 06424 860-267-2556 Project Name: Haddam Neck Decommissioning Analyses RequestedEbUOiy Contact Name & Phone: :'

Jack McCarthy 860-267-3924 Analytical Lab (Name, City, State) ,

General Engineering Laboratories . .

2040 Savage Road. Charleston SC. 29407 "

843 556 8171. Attn. Cheryl Jones Priority: El 30 D. M 14 D. n 7 D. Container Sample Size-Media Type &Type Sample Designation Date Time Code Code Code Comment, Preservation .ab;S,ýple!D.

9508-0000-014F 6/20/06 0817 SE C BP X Transferred from COC 2006-00428 5.

uL 9508-0000-016F 6/20/06 0922 SE C BP x Transferred from COC 2006-00428 9508-0000-017F 6/20/06 0904 SE C BP X Transferred from COC 2006-00428 9508-0000-018F 6/20/06 0842 SE C BP x Transferred from COC 2006-00428 9508-0000-002F 6/16/06 1507 SE C BP x Transferred from COC 2006-00410 9508-0000-OOIF 6/19/06 1319 SE C BP X Transferred fromnCOC 2006-00416 9508-0000-009F 6/19/06 1300 SE C BP x Transferred from COC 2006-00416 9508-0000-012F 6/19/06 1337 SE C BP x Transferred from COC 2006-00416 9508-0000-013F 6/19/06 1402 SE C BP X Transferred from COC 2006-00416 9508-0000-012FS 6/19/06 1337 SE C BP X Transferred 1:'

from COC 2006-00416 *';i : .,:.: ),.* :* :

NOTES: PO #: 002332 MSR#: 06-*qSY SSWP#NA E LTP QA El Radwaste QA El Non QA Samples Shipped Via: Tempi:"i- Deg:Ci Z Fed Ex El ups E] Hand

1) Relinquished By Date/TF e 2) Received By Date/Time Custody: Seat d*ntact 3)"R i D /Tim R BD1 74) .ý E] Other

3) Relinquished By Date/Time 4) Received By Date/Time Bill of Lading #

N0o4 P*2 7-6"1

Health Physics Procedure GPP-GGGR-R5104-003 -Attachment B-CY-00 I Major Chain of Custody Form N.20-04 Connecticut Yankee Atomic Power Company No. 2006-00446 362 Injun Hollow Road, East Hampton, CT 06424 860-267-2556 Project Name: Haddam Neck Decommissioning Analyses Requested Lab Use Only Contact Name & Phone: Comments:

Jack McCarthy 860-267-2556 Ext. 3024 Analytical Lab (Name, City, State)

General Engineering Laboratories 2040 Savage Road. Charleston SC. 29407 C 843 556 8171. Attn. Cheryl Jones r, Priority: [] 30 D. Z 14 D. 0 7 D. Container Sample Size-Media Type &Type Sample Designation Date Time Code Code Code Comment, Preservation Lab Sample ID 9508-0000-003F 6/19/06 0846 SE C BP x Transferred from COC 2006-00415 0'n 9508-0000-004F 6/19/06 0810 SE C BP X Transferred from COC 2006-00415 9508-0000-005F 6/19/06 0912 SE C BP x Transferred from COC 2006-00415 9508-0000-006F 6/19/06 1057 SE C BP X Transferred from COC 2006-00415 9508-0000-007F 6/19/06 0931 SE C BP x Transferred from COC 2006-00415 9508-0000-01OF 6/19/06 1025 SE C BP X Transferred from COC 2006-00415 9508-0000-01 IF 6/19/06 0745 SE C BP x Transferred from COC 2006-00415 9508-0000-015F 6/19/06 0955 SE C BP x Transferred from COC 2006-00415 9508-0000-006FS - 6/19/06 1057 SE C BP X Transferred from COC 2006-00415 NOTES: PO #: 002332 MSR #: 06-O05' SSWP# NA [Z LTP QA [I Radwaste QA El Non QA Samples Shipped Via: Internal Container Z Fed Ex Temp.: _ Deg. C EL UPS

[I Hand Custody Sealed?

YO NO

1) Relinquished By Date/Time 2) RDate/Time Custody Seal Intact?

J47b1C AicAArf os- 310 E] Other

-0 '~

041T

3) Relinquished By Date/Time 4) Rec~eived By Date/Time Y[] NOI Bill of Lading #

_ý?04 ?ýjlI -W 4

Connecticut Yankee Statement of Work for Analytical Lab Services .CY-ISC-SOW-O01 Figure 1. Sample Check-in List Date/Time Received: 7 _49( 6 6)9/C SDG# . C.

Work Order Number:

Shipping Cohtainer ID:1372-1 -76I ZSZhain of Custody #. , - 00 14S-

1. Custody Seals ori shipping container intact? ' -Yes l1 No []

2. Custody Seals dated and signed? Yes No [ ].

3. Chain-of-Custody record present? Yes bQ No t ]

4. Cooler temperature *"3 ."

5. Vermiculite/packing materials is: .Wet[] Dry a/AW

' Number of samples in shipping container: /

7. Sample holding times exceeded? Yes 11 No[

8. Samples have:-

-. tape. -hazard labels custody seals -._ appropriate Sample labels

9. Samples are:'

$- ip good condition . leaking

~ .. broken " ." have air bubbles

10. Were any anomalies .identified in sample receipt? Yes[ NoM 1, .Description of anomalies (include sample numbers):

Sample Custodian/Laboratory: Dae.

Date:.7 4 ' O6 ( 'J Telephoned to: On By

--

i7

RADIOLOGICAL ANALYSIS 8

Radiochemistry Case Narrative Connecticut Yankee Atomic Power Co. (YANK)

Work Order 166485 Method/Analysis Information Product: Alphaspec Am241, Cm, Solid ALL FSS Analytical Method: DOE EML HASL-300, Am-05-RC Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 545706 Prep Batch Number: 545649 Dry Soil Prep GL-RAD-A-021 Batch Number: 545648 Sample ID Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 1201129853 Method Blank (MB) 1201129854 166485001(9508-0000-014F) Sample Duplicate (DUP) 1201129855 166485001(9508-0000-014F) Matrix Spike (MS) 1201129856 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-01 1 REV# 14.

Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

9

Quality Control (QC) Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 166485001 (9508-0000-014F).

QC Information All of the QC samples met the required acceptance limits.

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis None of the samples in this sample set required reprep or reanalysis.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. A nonconformance report (NCR) was not generated for this SDG.

Manual Integration No manual integrations were performed on data in this batch.

Additional Comments Additional comments were not required for this sample set.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information 10

Product: Alphaspec Pu, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Pu- 1-RC Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 545707 Prep Batch Number: 545649 Dry Soil Prep GL-RAD-A-021 Batch Number: 545648 Sample ID Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 1201129857 Method Blank (MB) 1201129858 166485001(9508-0000-014F) Sample Duplicate (DUP) 1201129859 166485001(9508-0000-014F) Matrix Spike (MS) 1201129860 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-01 1 REV# 14.

Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

Ouality Control (OC Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 166485001 (9508-0000-014F).

QC Information All of the QC samples met the required acceptance limits.

11

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis Sample 166485002 (9508-0000-002F) was recounted due to detector error.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. A nonconformance report (NCR) was not generated for this SDG.

Manual Integration No manual integrations were performed on data in this batch.

Additional Comments Additional comments were not required for this sample set.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint Pu241, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Pu- 11-RC Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 545708 Prep Batch Number: 545649 Dry Soil Prep GL-RAD-A-021 Batch Number: 545648 12

Sample ID Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 1201129861 Method Blank (MB) 1201129862 166485001(9508-0000-014F) Sample Duplicate (DUP) 1201129863 166485001(9508-0000-014F) Matrix Spike (MS) 1201129864 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-035 REV# 8.

C Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

Quality Control (QC) Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 166485001 (9508-0000-014F).

QC Information All of the QC samples met the required acceptance limits.

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis None of the samples in this sample set required reprep or reanalysis.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from 13

referenced SOP or contractual documents. A nonconformance report (NCR) was not generated for this SDG.

Manual Integration No manual integrations were performed on data in this batch.

Additional Comments Additional comments were not required for this sample set.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Analytical Method: EML HASL 300, 4.5.2.3 Prep Method: Dry Soil Prep Analytical Batch Number: 546509 Prep Batch Number: 545648 14

Sample ID Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 166485003 9508-0000-016F 166485004 9508-0000-017F 166485005 9508-0000-018F 166485006 9508-0000-001F 166485007 9508-0000-009F 166485008 9508-0000-012F 166485009 9508-0000-013F 166485010 9508-0000-012FS 166485011 9508-0000-003F 166485012 9508-0000-004F 166485013 9508-0000-005F 166485014 9508-0000-006F 166485015 9508-0000-007F 166485016 9508-0000-01OF 166485017 9508-0000-01 IF 166485018 9508-0000-015F 166485019 9508-0000-006FS 1201131760 Method Blank (MB) 1201131761 166485001(9508-0000-014F) Sample Duplicate (DUP) 1201131762 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-0 13 REV# 11.

Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

Guality Control (0C0 Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 166485001 (9508-0000-014F).

QC Information 15

All of the QC samples met the required acceptance limits.

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis None of the samples in this sample set required reprep or reanalysis.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. The following NCR was generated for this SDG:

NCR 336011 was generated due to Failed RPD for DUP. 1. The relative percent difference for Pb-212 does not meet the requirements at 34%. The relative error ratio does not meet the requirements at 6.75.

1. Pb-212 is a naturally occurring isotope in soils. Reporting results.

Additional Comments Additional comments were not required for this sample set.

Qualifier information 16

Qualifier Reason Analyte Sample UI Data rejected due to interference. Europium- 155 166485001 166485011 166485018 1201131761 Manganese-54 166485017 UI Data rejected due to low abundance. Cesium- 134 166485001 166485006 166485008 166485011 166485012 166485013 166485015 166485016 166485017 166485018 166485019 Europium- 154 166485010 Method/Analysis Information Product: GFPC, Sr90, solid-ALL FSS Analytical Method: EPA 905.0 Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 545960 Prep Batch Number: 545649 Dry Soil Prep GL-RAD-A-021 Batch Number: 545648 17

Sample ID Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 1201130462 Method Blank (MB) 1201130463 166485002(9508-0000-002F) Sample Duplicate (DUP) 1201130464 166485002(9508-0000-002F) Matrix Spike (MS) 1201130465 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-004 REV# 10.

Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

Quality Control (QC) Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 166485002 (9508-0000-002F).

QC Information All of the QC samples met the required acceptance limits.

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis None of the samples in this sample set required reprep or reanalysis.

Chemical Recoveries All chemical recoveries meet the required acceptance limits for this sample set.

18

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. A nonconformance report (NCR) was not generated for this SDG.

Additional Comments Samples 1201130462 (MB), 1201130463 (9508-0000-002F), 1201130464 (9508-0000-002F),

1201130465 (LCS), 166485001 (9508-0000-014F) and 166485002 (9508-0000-002F) were dried and reweighed due to low matrix spike recovery.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint Tc99, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Tc-02-RC Modified Analytical Batch Number: 545863 Sample ID Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 1201130239 Method Blank (MB) 1201130240 166485002(9508-0000-002F) Sample Duplicate (DUP) 1201130241 166485002(9508-0000-002F) Matrix Spike (MS) 1201130242 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-005 REV# 13.

Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

19

Quality Control (QC) Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 166485002 (9508-0000-002F).

QC Information All of the QC samples met the required acceptance limits.

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis Samples 1201130240 (9508-0000-002F) and 166485001 (9508-0000-014F) were recounted due to high MDAs.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. A nonconformance report (NCR) was not generated for this SDG.

Additional Comments Additional comments were not required for this sample set.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information 20

Product: Liquid Scint Fe55, Solid-ALL FSS Analytical Method: DOE RESL Fe-1, Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 545967 Prep Batch Number: 545649 Dry Soil Prep GL-RAD-A-021 Batch Number: 545648 Sample ID Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 1201130484 Method Blank (MB) 1201130485 166485001(9508-0000-014F) Sample Duplicate (DUP) 1201130486 166485001(9508-0000-014F) Matrix Spike (MS) 1201130487 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-040 REV# 3.

Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

Quality Control (QC) Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 166485001 (9508-0000-014F).

QC Information All of the QC samples met the required acceptance limits.

21

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis None of the samples in this sample set required reprep or reanalysis.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. A nonconformance report (NCR) was not generated for this SDG.

Additional Comments Additional comments were not required for this sample set.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint Ni63, Solid-ALL FSS Analytical Method: DOE RESL Ni-1, Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 545969 Prep Batch Number: 545649 Dry Soil Prep GL-RAD-A-021 Batch Number: 545648 Sample ED Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 1201130488 Method Blank (MB) 1201130489 166485001(9508-0000-014F) Sample Duplicate (DUP) 1201130490 166485001(9508-0000-014F) Matrix Spike (MS) 1201130491 Laboratory Control Sample (LCS) 22

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-022 REV# 8.

Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

Quality Control (QCQ Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 166485001 (9508-0000-014F).

QC Information All of the QC samples met the required acceptance limits.

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis None of the samples in this sample set required reprep or reanalysis.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. A nonconformance report (NCR) was not generated for this SDG.

Additional Comments Additional comments were not required for this sample set.

23

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: LSC, Tritium Dist, Solid-HTD2,ALL FSS Analytical Method: EPA 906.0 Modified Analytical Batch Number: 545859 Sample ID Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 1201130223 Method Blank (MB) 1201130224 164553003(06-SS-06-016(1l1E2)) Sample Duplicate (DUP) 1201130225 164553003(06-SS-06-016(1 1E2)) Matrix Spike (MS) 1201130226 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-002 REV# 12.

Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

Quality Control (OC) Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 164553003 (06-SS-06-016(1 1E2)).

QC Information All of the QC samples met the required acceptance limits.

24

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis Samples were reprepped due to low/high recovery.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. A nonconformance report (NCR) was not generated for this SDG.

Additional Comments Additional comments were not required for this sample set.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint C14, Solid AII,FSS Analytical Method: EPA EERF C-01 Modified Analytical Batch Number: 547646 Sample ID Client ID 166485001 9508-0000-014F 166485002 9508-0000-002F 1201134169 Method Blank (MB) 1201134170 166485002(9508-0000-002F) Sample Duplicate (DUP) 1201134171 166485002(9508-0000-002F) Matrix Spike (MS) 1201134172 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-003 REV# 8.

25

Calibration Information:

Calibration Information All initial and continuing calibration requirements have been met.

Standards Information Standard solution(s) for these analyses are NIST traceable and used before the expiration date(s).

Sample Geometry All counting sources were prepared in the same geometry as the calibration standards.

Quality Control (QC) Information:

Blank Information The blank volume is representative of the sample volume in this batch.

Designated QC The following sample was used for QC: 166485002 (9508-0000-002F).

QC Information All of the QC samples met the required acceptance limits.

Technical Information:

Holding Time All sample procedures for this sample set were performed within the required holding time.

Preparation Information All preparation criteria have been met for these analyses.

Sample Re-prep/Re-analysis Samples were reprepped due to low/high recovery.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. A nonconformance report (NCR) was not generated for this SDG.

Additional Comments Additional comments were not required for this sample set.

Qualifier information Manual qualifiers were not required.

Certification Statement Where the analytical method has been performed under NELAP certification, the analysis has met all 26

of the requirements of the NELAC standard unless otherwise noted in the analytical case narrative.

Review Validation:

GEL requires all analytical data to be verified by a qualified data validator. In addition, all data designated for CLP or CLP-like packaging will receive a third level validation upon completion of the data package.

The following data validator verified the information presented in this case narrative:

Reviewer/Date:

27

General Engineering Laboratories NCR Report No.: 336011 Form GEL-NCR Revision No.: 1 Rev. 06/05 COMPANY - WIDE NONCONFORMANCE REPORT Mo.Day Yr. Division: Quality Criteria: Type:

18-JUL-06 Radiochemistry Specifications Material Instrument Type: Test / Method: Matrix Type: Client Code:

GAMMA SPECTROMETER GCSGAMMS Solid YANK001 Batch ID: Sample Numbers:

546509 166485001, 1201131761 Potentially affected work order(s)(SDG): 166485(MSR#06-0958)

Application Issues:

Failed RPD for DUP Specification and Requirements NRG Disposition:

Nonconformance

Description:

1. The relative percent difference for Pb-212 does not meet the 1. Pb-212 is a naturally occurring isotope in soils. Reporting results.

requirements at 34%. The relative error ratio does not meet the requirements at 6.75.

Originator's Name: Data Validator/Group Leader:

Jodi Cummings 18-JUL-06 Melanie Aycock 20-JUL-06 Quality Review:

Director:

Page 1 28

SAMPLE DATA

SUMMARY

29

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Report for YANKOO Connecticut Yankee Atomic Power Co.

Client SDG: MSR#06-0958 GEL Work Order: 166485 The Qualifiers in this report are defined as follows:

A quality control analyte recovery is outside of specified acceptance criteria

- Analyte is a surrogate compound U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UT Gamma Spectroscopy--Uncertain identification ND The analyte concentration is not detected above the detection limit.

The above sample is reported on a dry weight basis except where prohibited by the analytical procedure.

Where the analytical method has been performed under NELAP certification, the analysis has met all of the requirements of the NELAC standard unless qualified on the Certificate of Analysis.

This data report has been prepared and reviewed in accordance with General Engineering Laboratories, LLC standard operating procedures. Please direct any questions to your Project Manager, Cheryl Jones.

Reviewed by 30

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-014F Project: YANKO 1204 Sample ID: 166485001 Client ID: YANKOO Matrix: Soil Vol. Recv.:

Collect Date: 20-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 16.6%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Alpha Spec Analysis Alphaspec Am241, Cm, Solid ALL FSS Americium-241 U 0.0102 +/-0.0848 0.0833 +/-0.0848 0.241 pCi/g LCWI 07/13/06 1320 545706 1 Curium-242 U 0.0611 +/-0.0846 0.00 +/-0.0849 0.0827 pCi/g Curium-243/244 U 0.00775 +/-0.0588 0.0546 +/-0.0588 0.184 pCi/g Aiphaspec Pu, Solid-ALL FSS Plutonium-238 U -0.0113 +/-0.0489 0.0381 +/-0.0489 0.140 pCi/g LCWI 07/12/06 1816 545707 2 Plutonium-239/240 U -0.00566 +/-0.0476 0.0269 +/-0.0476 0.118 pCi/g Liquid Seint Pu241, Solid-ALL FSS Plutonium-241 U -5.45 +/-10.3 8.88 +/-10.3 18.5 pCi/g LCW1 07/14/06 2216 545708 3 Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 1.51 +/-0.163 0.0448 +/-0.163 0.093 pCi/g MJHI 07/13/06 2341 546509 4 Americium-241 U -0.0142 +/-0.105 0.0732 +/-0.105 0.149 pCi/g Bismuth-212 0.725 +/-0.230 0.0997 +/-0.230 0.206 pCi/g Bismuth-214 0.961 +/-0.0798 0.0262 +/-0.0798 0.0539 pCi/g Cesium-134 UI 0.00 +/-0.028 0.0174 +/-0.028 0.0358 pCi/g Cesium-137 0.223 +/-0.0279 0.015 +/-0.0279 0.0308 pCi/g Cobalt-60 U 0.00603 +/-0.0175 0.0143 +/-0.0175 0.0299 pCi/g Europium-152 U 0.030 +/-0.0417 0.0355 +/-0.0417 0.0728 pCi/g Europium-154 U 0.00872 +/-0.0555 0.0451 +/-0.0555 0.0937 pCi/g Europium-155 UI 0.00 +/-0.0665 0.0416 +/-0.0665 0.0848 pCi/g Lead-212 1.47 +/-0.0585 0.022 +/-0.0585 0.0449 pCi/g Lead-214 1.25 +/-0.0869 0.0247 +/-0.0869 0.0507 pCi/g Manganese-54 0.0411 +/-0.0211 0.0121 +/-0.0211 0.0252 pCi/g Niobium-94 U 0.00425 +/-0.0156 0.0126 +/-0.0156 0.0258 pCi/g Potassium-40 24.5 +/-0.783 0.114 +/-0.783 0.241 pCi/g Radium-226 0.961 F/-0.0798 0.0262 +/-0.0798 0.0539 pCi/g Silver-108m U -5.020E- +/-0.0142 0.0117 +/-0.0142 0.024 pCi/g 06 Thallium-208 0.416 +/-0.0436 0.0134 +/-0.0436 0.0275 pCi/g Rad Gas Flow Proportional Counting GFPC,SO9O, solid-ALL FSS Strontium-90 U 0.0238 /-0.0197 0.0173 +/-0.0197 0.039 pCi/g BXF1 07/13/06 1852 545960 5 Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid-HTD2,ALL FSS 31

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-014F Project: YANKO 1204 Sample ID: 166485001 Client ID: YANKOO Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid-HTD2,ALL FSS Tritium U 0.00 +/-0.562 0.471 +/-0.562 0.972 pCi/g NXPI 07/16/06 0152 545859 6 Liquid Scint C14, Solid AII,FSS Carbon- 14 U-0.00 0721 +/-0.112 0.094 +/-0.112 0.191 pCi/g ATH2 07/17/06 1931 547646 7 Liquid Scint Fe55, Solid-ALL FSS Iron-55 U -13.4 +/-15.9 13.1 +/-16.0 27.1 pCi/g SLN1 07/15/06 0122 545967 9 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 16.2 +/-7.96 6:28 +/-7.98 12.9 pCi/g SLNI 07/18/06 1211 545969 10 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U -( ).148 +/-0.236 0.201 +/-0.236 0.409 pCi/g EGDI 07/19/06 0628 545863 11 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Ash Soil Prep Ash Soil Prep, GL-RAD-A-021B JMBI 07/07/06 0900 545649 Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Pu-I 1-RC Modified 3 DOE EML HASL-300, Pu-11-RC Modified 4 EML HASL 300, 4.5.2.3 5 EPA 905.0 Modified 6 EPA 906.0 Modified 7 EPA EERF C-01 Modified 8 EPA EERF C-01 Modified 9 DOE RESL Fe-I, Modified 10 DOE RESL Ni-1, Modified 11 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Americium-243 Alphaspec Am241, Cm, Solid ALL 93 (15%-/125%)

Plutonium-242 Alphaspec Pu, Solid-ALL FSS 91 (15%-125%)

Carrier/Tracer Recovery Liquid Scint Pu241, Solid-ALL FS 61 (25%-/125%)

32

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-014F Proiect: YANK01204 Sample ID: 166485001 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Carrier/Tracer Recovery GFPC, Sr9O, solid-ALL FSS 77 (25%-125%)

Carrier/Tracer Recovery Liquid Scint Fe55, Solid-ALL FS 79 (15%-1125%)

Carrier/Tracer Recovery Liquid Scint Ni63, Solid-ALL FS 81 (25%-125%)

Carrier/Tracer Recovery Liquid Scint Tc99, Solid-ALL FS 68 (15/-,125%)

Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H 'Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

33

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-002F Project: YANKO 1204 Sample ID: 166485002 Client ID: YANK001 Matrix: Soil Vol. Recv.:

Collect Date: 16-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 11.8%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Alpha Spec Analysis Alphaspec Am241, Cm, SolidALL FSS Americium-241 U --0.0266 +/-0.060 0.0944 +/-0.0601 0.301 pCi/g LCW1 07/13/06 1320 545706 1 Curium-242 U 0.0465 +/-0.0912 0.00 +/-0.0914 0.126 pCi/g Curium-243/244 U 0.0315 +/-0.0836 0.0473 +/-0.0837 0.207 pCi/g AIphaspec Pu, Solid-ALL FSS Plutonium-238 U - 0.0547 +/-0.0405 0.0982 +/-0.0409 0.284 pCi/g LCW1 07/12/06 2303 545707 2 Plutonium-239/240 U -0.10 +/-0.0897 0.153 +/-0.0903 0.394 pCi/g Liquid Scint Pu241, Solid-ALL FSS Plutonium-241 U 0.218 +/-8.95 7.50 +/-8.95 15.7 pCi/g LCWI 07/14/06 2232 545708 3 Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.503 +/-0.116 0.0381 +/-0.116 0.0807 pCi/g MJHI 07/14/06 0753 546509 4 Americium-241 U 0.0366 +/-0.0846 0.0597 +/-0.0846 0.123 pCi/g Bismuth-212 0.373 +/-0.201 0.0803 +/-0.201 0.169 pCi/g Bismuth-214 0.308 +/-0.0565 0.0183 +/-0.0565 0.0384 pCi/g Cesium-134 U 0.0207 +/-0.0177 0.0137 +/-0.0177 0.0287 pCi/g Cesium-137 U 0.011 +/-0.0186 0.0113 +/-0.0186 0.0237 pCi/g Cobalt-60 U -0.00388 +/-0.0142 0.0115 +/-0.0142 0.0248 pCi/g Europium-152 U 0.00242 +/-0.030 0.0272 +/-0.030 0.0565 pCi/g Europium-154 U 0.0149 +/-0.0431 0.0372 +/-0.0431 0.0792 pCi/g Europium-155 U 0.0161 +/-0.0326 0.0305 +/-0.0326 0.0627 pCi/g Lead-212 0.471 +/-0.0514 0.0153 +1-0.0514 0.0317 pCi/g Lead-214 0.357 +/-0.059 0.0186 +/-0.059 0.0387 pCi/g Manganese-54 U -0.0038 +/-0.013 0.0112 +/-0.013 0.0237 pCi/g Niobium-94 U 0.007 +/-0.0112 0.00984 +/-0.0112 0.0207 pCi/g Potassium-40 11.3 +/-0.941 0.0969 +/-0.941 0.211 pCi/g Radium-226 0.308 +/-0.0565 0.0183 +/-0.0565 0.0384 pCi/g Silver-108m U -0.00316 +/-0.0107 0.00934 +/-0.0107 0.0195 pCi/g Thallium-208 0.178 +/-0.0334 0.00863 +/-0.0334 0.0183 pCi/g Rad Gas Flow Proportional Counting GFPC,S90, solid-ALL FSS Strontium-90 U-0.00( )179 +/-0.0163 0.0184 +/-0.0163 0.0413 pCi/g BXFI 07/13/06 1852 545960 5 Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid-HTD2,ALL FSS Tritium U 0.00 +/-0.456 0.382 +/-0.456 0.788 pCi/g NXP1 07/16/06 0323 545859 6 34

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-002F Project: YANKO 1204 Sample ID: 166485002 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Liquid Scintillation Analysis Liquid Scint C14, Solid AllFSS Carbon- 14 U 0. +1-0.115 0.096 +1-0.115 0.195 pCi/g ATH2 07/17/06 2033 547646 7 Liquid Scint Fe55, Solid-ALL FSS Iron-55 U - -9.04 +/-14.9 12.2 +/-15.0 25.3 pCi/g SLN1 07/15/06 0154 545967 9 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 15.7 +/-7.81 6.17 +/-7.83 12.6 pCi/g SLNI 07/18/06 1243 545969 10 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U ).372 +/-0.297 0.239 +/-0.297 0.491 pCi/g EGDI 07/16/06 0639 545863 11 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Ash Soil Prep Ash Soil Prep, GL-RAD-A-02113 JMBI 07/07/06 0900 545649 Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Pu- 1-RC Modified 3 DOE EML HASL-300, Pu- Il-RC Modified 4 EML HASL 300, 4.5.2.3 5 EPA 905.0 Modified 6 EPA 906.0 Modified 7 EPA EERF C-01 Modified 8 EPA EERF C-01 Modified 9 DOE RESL Fe-1, Modified 10 DOE RESL Ni-l, Modified 11 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Americium-243 Alphaspec Am241, Cm, Solid ALL 62 (15%-125%)

Plutonium-242 Alphaspec Pu, Solid-ALL FSS 89 (15%-125%)

Carrier/Tracer Recovery Liquid Scint Pu241, Solid-ALL FS 81 (25%-125%)

Carrier/Tracer Recovery GFPC, Sr90, solid-ALL FSS 76 (25%-125%)

Carrier/Tracer Recovery Liquid Scint Fe55, Solid-ALL FS 77 (15%-125%)

35

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-002F Proiect: YANKO 1204 Sample ID: 166485002 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Carrier/Tracer Recovery Liquid Scint Ni63, Solid-ALL FS 84 (25/o%-125%)

Carrier/Tracer Recovery Liquid Scint Tc99, Solid-ALL FS 78 (15%-125%)

Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

36

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-016F Project: YANKO 1204 Sample ID: 166485003 Client ID: YANK001 Matrix: Soil Vol. Recv.:

Collect Date: 20-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 12.9%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gammna,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.501 +/-0.0944 0.0313 +/-0.0944 0.0627 pCi/g MJH1 07/14/06 0802 546509 1 Americium-24 I U 0.00947 +/-0.0475 0.0396 +/-0.0475 0.0791 pCi/g Bismuth-212 0.352 +/-0.161 0.0828 +/-0.161 0.166 pCi/g Bismuth-214 0.286 +/-0.0495 0.0203 +/-0.0495 0.0405 pCi/g Cesium- 134 U 0.0182 +/-0.0197 0.0132 +/-0.0197 0.0263 pCi/g Cesium- 137 U-0.000299 +/-0.0133 0.0114 +/-0.0133 0.0228 pCi/g Cobalt-60 U -0.0032 +/-0.0134 0.0111 +/-0.0134 0.0223 pCi/g Europium- 152 U -0.0133 +/-0.0352 0.027 +/-0.0352 0.0539 pCi/g Europium- 154 U 0.0116 +/-0.0418 0.0363 +/-0.0418 0.0726 pCi/g Europium-155 U -0.00318 +/-0.0329 0.030 +/-0.0329 0.060 pCi/g Lead-212 0.385 +/-0.046 0.0169 +/-0.046 0.0338 pCi/g Lead-214 0.281 +/-0.0546 0.020 +/-0.0546 0.0399 pCi/g Manganese-54 U 0.00167 +/-0.0119 0.0106 +/-0.0119 0.0211 pCi/g Niobium-94 U 0.00341 +/-0.0113 0.00984 +/-0.0113 0.0197 pCi/g Potassium-40 11.2 +/-0.877 0.0913 +/-0.877 0.182 pCi/g Radium-226 0.286 +/-0.0495 0.0203 +/-0.0495 0.0405 pCi/g Silver-108m U -0.00637 +/-0.0108 0.00932 +/-0.0108 0.0186 pCi/g Thallium-208 0.120 +/-0.027 0.00993 +/-0.027 0.0199 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 37

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-016F Proiect: YANKO 1204 Sample ID: 166485003 Client ID: YANKOO Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

38

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-017F Project: YANK01204 Sample ID: 166485004 Client ID: YANKOOI Matrix: Soil Vol. Recv.:

Collect Date: 20-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 17%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamnia,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.417 +/-0.0838 0.033 +/-0.0838 0.0707 pCi/g MJH-1 07/14/06 0856 546509 1 Americium-241 U -0.0787 +/-0.0757 0.0581 +/-0.0757 0.120 pCi/g Bismuth-212 0.309 +/-0.186 0.0728 +/-0.186 0.155 pCi/g Bismuth-214 0.304 +/-0.056 0.018 +/-0.056 0.038 pCi/g Cesium-134 U 0.0155 +/-0.0228 0.0128 +/-0.0228 0.027 pCi/g Cesium-137 U 0.0114 +/-0.0228 0.00952 +/-0.0228 0.0202 pCi/g Cobalt-60 U 0.00323 +/-0.0138 0.012 +/-0.0138 0.0258 pCi/g Europium-152 U -0.0123 +/-0.0311 0.026 +/-0.0311 0.0543 pCi/g Europium-154 U -0.0154 +/-0.0442 0.0365 +/-0.0442 0.078 pCi/g Europium-155 U 0.00632 +/-0.0341 0.0323 +/-0.0341 0.0665 pCi/g Lead-212 0.406 +/-0.0331 0.0163 +/-0.0331 0.0336 pCi/g Lead-214 0.342 +/-0.0443 0.0185 +/-0.0443 0.0387 pCi/g Manganese-54 U -0.00676 +/-0.0127 0.0102 +/-0.0127 0.0217 pCi/g Niobium-94 U 0.00652 +/-0.0109 0.00976 +/-0.0109 0.0206 pCi/g Potassium-40 11.2 +/-0.618 0.0913 +/-0.618 0.201 pCi/g Radium-226 0.304 +/-0.056 0.018 +/-0.056 0.038 pCi/g Silver-108m U 0.00793 +/-0.00974 0.00915 +/-0.00974 0.0192 pCi/g Thallium-208 0.131 +/-0.0289 0.00999 +/-0.0289 0.021 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 39

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-017F Project: YANK01204 Sample ID: 166485004 Client ID: YANKOO Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples wxere not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

40

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-018F Project: YANK01204 Sample ID: 166485005 Client ID: YANK001 Matrix: Soil Vol. Recv.:

Collect Date: 20-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 13.4%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.435 +/-0.119 0.0422 +/-0.119 0.0895 pCi/g MJH1 07/14/06 0856 546509 1 Americium-241 U 0.0046 +/-0.0178 0.0153 +/-0.0178 0.0314 pCi/g Bismuth-212 0.351 +/-0.194 0.0888 +/-0.194 0.188 pCi/g Bismuth-214 0.286 +/-0.0607 0.0211 +/-0.0607 0.0443 pCi/g Cesium- 134 U 0.0286 +/-0.0216 0.015 +/-0.0216 0.0314 pCi/g Cesium-137 0.0249 +/-0.0131 0.0113 +/-0.0131 0.0238 pCi/g Cobalt-60 U 0.00521 +/-0.0144 0.0125 +/-0.0144 0.0269 pCi/g Europium- 152 U -0.0149 +/-0.0372 0.0289 +/-0.0372 0.060 pCi/g Europium- 154 U 0.0393 +/-0.0443 0.0386 +/-0.0443 0.0824 pCi/g Europium- 155 U 0.0318 +/-0.041 0.0254 +/-0.041 0.0522 pCi/g Lead-212 0.464 +/-0.0618 0.0153 +/-0.0618 0.0315 pCi/g Lead-214 0.333 +/-0.0595 0.0223 +/-0.0595 0.0462 pCi/g Manganese-54 U -0.00817 +/-0.0143 0.0121 +/-0.0143 0.0256 pCi/g Niobium-94 U 0.0095 +/-0.0125 0.0111 +/-0.0125 0.0233 pCi/g Potassium-40 11.2 +/-0.896 0.0954 +/-0.896 0.210 pCi/g Radium-226 0.286 +/-0.0607 0.0211 +/-0.0607 0.0443 pCi/g Silver-I108m U 0.00164 +/-0.0112 0.00997 +/-0.0112 0.0208 pCi/g Thallium-208 0.153 +/-0.0301 0.0114 +/-0.0301 0.024 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 41

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Anlwiv .

Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-018F Project: YANKO 1204 Sample ID: 166485005 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A ý Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

42

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-00 IF Project: YANKO 1204 Sample ID: 166485006 Client ID: YANKOOI Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 13%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.376 +/-0.0951 0.0334 +/-0.0951 0.0712 pCi/g MJHI 07/14/06 0857 546509 1 Americium-241 U -0.0129 +1-0.0501 0.0425 +1-0.0501 0.0873 pCi/g Bismuth-212 0.282 +/-0.133 0.0776 +/-0.133 0.164 pCi/g Bismuth-214 0.229 +/-0.0479 0.019 +/-0.0479 0.0399 pCi/g Cesium-134 UI 0.00 +/-0.0265 0.0131 +/-0.0265 0.0274 pCi/g Cesium-137 U -0.00523 +/-0.013 0.00928 +/-0.013 0.0196 pCi/g Cobalt-60 U -0.0019 +/-0.0132 0.011 +/-0.0132 0.0236 pCi/g Europium-152 U 0.000227 +/-0.0304 0.0243 +/-0.0304 0.0507 pCi/g Europium-154 U 0.00218 +/-0.0443 0.0325 +/-0.0443 0.0696 pCi/g Europium-155 U 0.0407 +/-0.033 0.0273 +/-0.033 0.0562 pCi/g Lead-212 0.323 +/-0.0364 0.016 +/-0.0364 0.0329 pCi/g Lead-214 0.332 +/-0.0532 0.0174 +/-0.0532 0.0364 pCi/g Manganese-54 U 0.013 +/-0.012 0.0113 +/-0.012 0.0237 pCi/g Niobium-94 U 0.00812 +/-0.0105 0.00934 +/-0.0105 0.0196 pCi/g Potassium-40 11.1 +/-0.562 0.0852 +/-0.562 0.187 pCi/g Radium-226 0.229 +/-0.0479 0.019 +/-0.0479 0.0399 pCi/g Silver-l08m U -0.00228 +/-0.0098 0.0086 +/-0.0098 0.018 pCi/g Thallium-208 0.141 +/-0.028 0.00976 +/-0.028 0.0205 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 43

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-00IF Project: YANKO 1204 Sample ID: 166485006 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

44

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-009F Project: YANKO 1204 Sample ID: 166485007 Client ID: YANKOO I Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 12.9%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM& ALL FSS 226 Ingrowth Waived Actinium-228 0.501 +/-0.148 0.0558 +/-0.148 0.119 pCi/g MJH1 07/13/06 2341 546509 1 Americium-241 U 0.013 +/-0.0405 0.0332 +/-0.0405 0.0684 pCi/g Bismuth-212 0.403 +/-0.380 0.118 +/-0.380 0.249 pCi/g Bismuth-214 0.310 +/-0.0906 0.0324 +/-0.0906 0.0678 pCi/g Cesium-134 U 0.0307 +/-0.0222 0.0201 +/-0.0222 0.0422 pCi/g Cesium-137 0.0336 +/-0.0249 0.0151 +/-0.0249 0.032 pCi/g Cobalt-60 U -0.00638 +/-0.0177 0.0136 +/-0.0177 0.0299 pCi/g Europium-152 U 0.00412 +/-0.0462 0.0383 +/-0.0462 0.0799 pCi/g Europium-154 U 0.0122 +/-0.0585 0.0483 +/-0.0585 0.104 pCi/g Europium-155 U 0.0149 +/-0.0475 0.0373 +/-0.0475 0.0767 pCi/g Lead-212 0.396 +/-0.072 0.0259 +/-0.072 0.0533 pCi/g Lead-214 0.364 +/-0.0752 0.0301 +/-0.0752 0.0626 pCi/g Manganese-54 U 0.0199 +/-0.023 0.0162 +/-0.023 0.0344 pCi/g Niobium-94 U 0.00192 +/-0.0165 0.0141 +/-0.0165 0.0297 pCi/g Potassium-40 13.2 +/-1.10 0.130 +/-1.10 0.288 pCi/g Radium-226 0.310 +/-0.0906 0.0324 +/-0.0906 0.0678 pCi/g Silver-108m U 0.0115 +/-0.017 0.0144 +/-0.017 0.030 pCi/g Thallium-208 0.182 +1-0.0415 0.0147 +/-0.0415 0.031 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 45

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-009F Project: YANK01204 Sample ID: 166485007 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

Ul Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

46

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-012F Project: YANKO 1204 Sample ID: 166485008 Client ID: YANK0O 1 Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 16.2%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.503 +/-0.121 0.0381 +/-0.121 0.0812 pCi/g MJHI 07/14/06 0857 546509 1 Americium-241 U 0.0836 +/-0.115 0.0695 +/-0.115 0.144 pCi/g Bismuth-212 0.226 +/-0.163 0.0909 +/-0.163 0.192 pCi/g Bismuth-214 0.291 +1-0.0625 0.0202 +/-0.0625 0.0425 pCi/g Cesium- 134 UI 0.00 +1-0.0191 0.0141 +/-0.0191 0.0296 pCi/g Cesium-137 0.0479 +1-0.0253 0.0118 +/-0.0253 0.0248 pCi/g Cobalt-60 U 0.00267 +1-0.0168 0.0144 +/-0.0168 0.0307 pCi/g Europium- 152 U -0.014 +1- 0.0347 0.0286 +/-0.0347 0.0596 pCi/g Europium- 154 U 0.0148 +1-0.0439 0.0383 +/-0.0439 0.0818 pCi/g Europium-155 U 0.0141 0.0363 0.0338 +/-0.0363 0.0697 pCi/g Lead-212 0.527 +1-0.0633 0.0174 +/-0.0633 0.0361 pCi/g Lead-214 0.354 0.0685 0.0214 +/-0.0685 0.0445 pCi/g Manganese-54 U 0.00694 0.0137 0.0119 +/-0.0137 0.0251 pCi/g Niobium-94 U 0.00233 0.0127 0.011 +/-0.0127 0.023 pCi/g Potassium-40 11.1 +/-0.942 0.107 +/-0.942 0.234 pCi/g Radium-226 0.291 +/-0.0625 0.0202 +/-0.0625 0.0425 pCi/g Silver- 108m U -0.00518 +/-0.0112 0.00973 +/-0.0112 0.0204 pCi/g Thallium-208 0.141 +/-0.0321 0.0112 +/-0.0321 0.0236 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 47

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-012F Project: YANK0 1204 Sample ID: 166485008 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been.confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

48

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-013F Project: YANKO 1204 Sample ID: 166485009 Client ID: YANK001 Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 20.6%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowvth Waived Actinium-228 1.25 +/-0.238 0.072 +/-0.238 0.144 pCi/g MJHI 07/13/06 2351 546509 1 Americium-241 U 0.0774 +/-0.085 0.0619 +/-0.085 0.124 pCi/g Bismuth-212 0.861 +/-0.379 0.160 +/-0.379 0.320 pCi/g Bismuth-214 0.875 +/-0.130 0.036 +/-0.130 0.0719 pCi/g Cesium-134 U 0.0255 +/-0.0292 0.0254 +/-0.0292 0.0509 pCi/g Cesium-137 0.0802 +/-0.0403 0.0205 +/-0.0403 0.0409 pCi/g Cobalt-60 U -0.00255 +/-0.0268 0.0217 +/-0.0268 0.0433 pCi/g Europium-152 U -0.0347 +/-0.0841 0.0515 +/-0.0841 0.103 pCi/g Europium-154 U 0.0266 +/-0.0752 0.0633 +/-0.0752 0.126 pCi/g Europium-155 U 0.029 +/-0.0726 0.0544 +/-0.0726 0.109 pCi/g Lead-212 1.25 +/-0.124 0.0303 +/-0.124 0.0605 pCi/g Lead-214 0.990 +/-0.125 0.0368 +/-0.125 0.0736 pCi/g Manganese-54 U -0.00404 +/-0.0253 0.0208 +/-0.0253 0.0417 pCi/g Niobium-94 U 0.00914 +/-0.0224 0.0192 +/-0.0224 0.0384 pCi/g Potassium-40 18.6 +/-1.50 0.190 +1-1.50 0.379 pCi/g Radium-226 0.875 +/-0.130 0.036 +/-0.130 0.0719 pCi/g Silver-108m U -0.0271 +/-0.0239 0.0171 +/-0.0239 0.0341 pCi/g Thallium-208 0.382 +/-0.0602 0.0184 +/-0.0602 0.0367 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 49

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-013F Project: YANKO 1204 Sample ID: 166485009 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound

^' RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

50

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-012FS Proiect: YANKO 1204 Sample ID: 166485010 Client ID: YANKOOI Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 15.8%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gaimma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.566 +/-0.0992 0.0305 +/-0.0992 0.0641 pCi/g MJHI 07/14/06 0857 546509 1 Americium-241 U -0.0464 +/-0.0691 0.0543 +/-0.0691 0.112 pCi/g Bismuth-212 0.274 +/-0.152 0.0692 +/-0.152 0.145 pCi/g Bismuth-214 0.330 +/-0.0471 0.0182 +/-0.0471 0.0377 pCi/g Cesium-134 U 0.0144 +/-0.0122 0.0114 +/-0.0122 0.0237 pCi/g Cesium-137 0.0268 +/-0.0149 0.00922 +/-0.0149 0.0192 pCi/g Cobalt-60 U 0.000336 +/-0.011 0.00915 +/-0.011 0.0195 pCi/g Europium-152 U -0.0197 +/-0.0269 0.0237 +/-0.0269 0.0491 pCi/g Europium-154 UI 0.00 +/-0.083 0.0295 +/-0.083 0.0622 pCi/g Europium-155 U 0.0423 +/-0.0336 0.0325 +/-0.0336 0.0667 pCi/g Lead-212 0.511 +/-0.0339 0.0149 +/-0.0339 0.0306 pCi/g Lead-214 0.338 +/-0.0467 0.0179 +/-0.0467 0.037 pCi/g Manganese-54 U 0.000988 +/-0.0111 0.00971 +/-0.0111 0.0203 pCi/g Niobium-94 U -0.0103 +/-0.00964 0.00762 +/-0.00964 0.016 pCi/g Potassium-40 12.5 +/-0.518 0.0805 +/-0.518 0.173 pCi/g Radium-226 0.330 +/-0.0471 0.0182 +/-0.0471 0.0377 pCi/g Silver-108m U -0.00424 +/-0.00923 0.00801 +/-0.00923 0.0167 pCi/g Thallium-208 0.148 +/-0.022 0.00927 +/-0.022 0.0193 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 51

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-012FS Project: YANKO 1204 Sample ID: 166485010 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

52

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-003F Project: YANK01204 Sample ID: 166485011 Client ID: YANKOOI Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 23.7%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis GammaSolid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 1.53 +/-0.264 0.0903 +/-0.264 0.180 pCi/g MJHI 07/13/06 2351 546509 1 Americium-241 U 0.0707 +/-0.125 0.0887 +/-0.125 0.177 pCi/g Bismuth-212 1.23 +/-0.375 0.190 +/-0.375 0.379 pCi/g Bismuth-214 0.992 +/-0.145 0.0455 +/-0.145 0.0909 pCi/g Cesium-134 UI 0.00 +/-0.0573 0.0326 +/-0.0573 0.0652 pCi/g Cesium-137 0.176 +/-0.0527 0.0253 +/-0.0527 0.0505 pCi/g Cobalt-60 U 0.0323 +/-0.0346 0.0304 +/-0.0346 0.0607 pCi/g Europium-152 U -0.0424 +/-0.106 0.0639 +/-0.106 0.128 pCi/g Europium- 154 U 0.065 +/-0.114 0.0854 +/-0.114 0.171 pCi/g Europium-155 UI 0.00 +/-0.106 0.065 +/-0.106 0.130 pCi/g Lead-212 1.58 +/-0.159 0.0355 +/-0.159 0.071 pCi/g Lead-214 1.17 +/-0.162 0.0452 +/-0.162 0.0903 pCi/g Manganese-54 U -0.0124 +/-0.0309 0.0252 +/-0.0309 0.0503 pCi/g Niobium-94 U 0.00725 +/-0.0283 0.0231 +/-0.0283 0.0461 pCi/g Potassium-40 26.4 +/-2.06 0.216 +/-2.06 0.431 pCi/g Radium-226 0.992 +1-0.145 0.0455 +/-0.145 0.0909 pCi/g Silver-108m U 0.00558 +/-0.0269 0.0222 +/-0.0269 0.0443 pCi/g Thallium-208 0.473 +/-0.0875 0.0243 +/-0.0875 0.0486 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 53

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-003F Project: YANKO 1204 Sample ID: 166485011 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

54

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-004F Project: YANKO 1204 Sample ID: 166485012 Client ID: YANKOOI Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 12.8%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.665 /-0.0859 0.0283 +/-0.0859 0.0591 pCi/g MJHI 07/14/06 0858 546509 I Americium-241 U 0.00435 /-0.0355 0.0343 +/-0.0355 0.0699 pCi/g Bismuth-212 0.603 +/-0.154 0.0581 +/-0.154 0.121 pCi/g Bismuth-214 0.396 +/-0.040 0.0153 +/-0.040 0.0318 pCi/g Cesium- 134 UI 0.00 +/-0.0163 0.0109 +/-0.0163 0.0226 pCi/g Cesium-137 U 0.011 +/-0.014 0.0089 +/-0.014 0.0184 pCi/g Cobalt-60 U 0.000136 d+/-0.0101 0.00841 +/-0.0101 0.0178 pCi/g Europium-152 U 0.00032 d-/-0.0236 0.0214 +/-0.0236 0.0442 pCi/g Europium-154 U -0.0151 +/-0.030 0.0244 +/-0.030 0.0514 pCi/g Europium-155 U 0.0321 +/-0.030 0.0285 +/-0.030 0.0582 pCi/g Lead-212 0.674 -/-0.0312 0.0131 +/-0.0312 0.0269 pCi/g Lead-214 0.504 +/-0.041 0.0156 +/-0.041 0.0321 pCi/g Manganese-54 U -0.00808 +/ -0.00971 0.00821 +/-0.00971 0.0171 pCi/g Niobium-94 U -7.390E- +-/-0.0083 0.00742 +/-0.0083 0.0154 pCi/g 05 Potassium-40 12.2 +/-0.460 0.0669 +/-0.460 0.143 pCi/g Radium-226 0.396 +/-0.040 0.0153 +/-0.040 0.0318 pCi/g Silver- 108m U -0.00206 -/-0.0085 0.00748 +/-0.0085 0.0155 pCi/g Thallium-208 0.209 /-0.0232 0.00785 +/-0.0232 0.0163 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 55

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-004F Proiect: YANKO 1204 Sample ID: 166485012 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or L-OD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

56

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analyvis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-005F Proiect: YANKO 1204 Sample ID: 166485013 Client ID: YANK001 Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 28.9%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 1.37 +/-0.221 0.0641 +/-0.221 0.135 pCi/g MJHI 07/13/06 2350 546509 1 Americium-241 U -0.00378 +/-0.109 0.0748 +/-0.109 0.153 pCi/g Bismuth-212 1.01 +/-0.383 0.151 +/-0.383 0.314 pCi/g Bismuth-214 0.891 +/-0.134 0.0355 +/-0.134 0.0737 pCi/g Cesium- 134 UI 0.00 +/-0.0524 0.026 +/-0.0524 0.0538 pCi/g Cesium-137 0.976 +/-0.0656 0.0207 +/-0.0656 0.0429 pCi/g Cobalt-60 U -0.00143 +/-0.0264 0.0219 +/-0.0264 0.0464 pCi/g Europium-152 U -0.00812 +/-0.0687 0.0538 +/-0.0687 0. I pCi/g Europium- 154 U -0.0101 +/-0.0789 0.0652 +/-0.0789 0.138 pCi/g Europium-155 U 0.0746 +/-0.0844 0.0493 +/-0.0844 0.101 pCi/g Lead-212 1.51 +/-0.0829 0.0289 +/-0.0829 0.0591 pCi/g Lead-214 0.906 +/-0.125 0.0391 +/-0.125 0.0804 pCi/g Manganese-54 U -0.00614 +/-0.0259 0.0207 +/-0.0259 0.0431 pCi/g Niobium-94 U 0.0106 +/-0.0228 0.019 +/-0.0228 0.0394 pCi/g Potassium-40 22.4 +/-1.16 0.183 +/-1.16 0.391 pCi/g Radium-226 0.891 +/-0.134 0.0355 +/-0.134 0.0737 pCi/g Silver-108m U6.330E-05 +/-0.0237 0.0185 +/-0.0237 0.0381 pCi/g Thallium-208 0.446 1-/-0.0667 0.0201 +/-0.0667 0.0417 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 57

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-005F Project: YANKO 1204 Sample ID: 166485013 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

58

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-006F Project: YANKO 1204 Sample ID: 166485014 Client ID: YANK001 Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 13.1%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.593 +/-0.144 0.0561 +/-0.144 0.118 pCi/g MJHI 07/14/06 0900 546509 1 Americium-241 U 0.00451 +/-0.0219 0.0197 +/-0.0219 0.0403 pCi/g Bismuth-212 0.477 +/-0.222 0.110 +/-0.222 0.230 pCi/g Bismuth-214 0.393 +/-0.0646 0.0283 +/-0.0646 0.0588 pCi/g Cesium- 134 U 0.0145 +/-0.0299 0.0197 +/-0.0299 0.041 pCi/g Cesium- 137 U 0.0268 +/-0.0234 0.0164 +/-0.0234 0.0341 pCi/g Cobalt-60 U 0.0151 +/-0.0254 0.0173 +/-0.0254 0.0367 pCi/g Europium- 152 U -0.025 +/-0.0426 0.0354 +/-0.0426 0.0733 pCi/g Europium- 154 U 0.015 +/-0.0528 0.0455 +/-0.0528 0.0965 pCi/g Europium-155 U 0.0276 +1-0.0501 0.0347 +/-0.0501 0.0709 pCi/g Lead-212 0.466 +1-0.050 0.0221 +/-0.050 0.0454 pCi/g Lead-214 0.408 +/-0.069 0.0253 +/-0.069 0.0525 pCi/g Manganese-54 U 0.0247 +/-0.0199 0.0178 +/-0.0199 0.0371 pCi/g Niobium-94 U -0.0012 +/-0.0162 0.0137 +/-0.0162 0.0287 pCi/g Potassium-40 10.8 +/-0.632 0.129 +/-0.632 0.278 pCi/g Radium-226 0.393 +/-0.0646 0.0283 +/-0.0646 0.0588 pCi/g Silver- 108m U -0.00661 +/-0.0147 0.0129 +/-0.0147 0.0268 pCi/g Thallium-208 0.169 +/-0.0343 0.0154 +/-0.0343 0.0321 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML -IASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 59

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-006F Project: YANKO 1204 Sample ID: 166485014 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

60

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-007F Project: YANKO 1204 Sample ID: 166485015 Client ID: YANKOO Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 19.5%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 1.36 +/-0.295 0.111 +/-0.295 0.234 pCi/g MJHI 07/13/06 2351 546509 1 Americium-241 U -0.0148 +/-0.0402 0.0316 +/-0.0402 0.0649 pCi/g Bismuth-212 0.852 +/-0.701 0.212 +/-0.701 0.449 pCi/g Bismuth-214 0.892 +/-0.172 0.0511 +/-0.172 0.107 pCi/g Cesium- 134 UI 0.00 +/-0.0563 0.038 +/-0.0563 0.0795 pCi/g Cesium- 137 0.116 +/-0.0486 0.0297 +/-0.0486 0.0624 pCi/g Cobalt-60 U 0.0105 +/-0.0391 0.0325 +/-0.0391 0.0699 pCi/g Europium- 152 U -0.0344 +/-0.0909 0.064 +/-0.0909 0.133 pCi/g Europium- 154 U 0.0866 +/-0.117 0.101 +/-0.117 0.215 pCi/g Europium- 155 U 0.117 +/-0.0758 0.0621 +/-0.0758 0.127 pCi/g Lead-212 1.55 +/-0.197 0.0345 +/-0.197 0.0713 pCi/g Lead-214 1.08 +/-0.170 0.0502 +/-0.170 0.104 pCi/g Manganese-54 U -0.0326 +/-0.0363 0.0284 +/-0.0363 0.060 pCi/g Niobium-94 U 0.00186 +/-0.0354 0.0282 +/-0.0354 0.059 pCi/g Potassium-40 24.4 +/-2.01 0.223 +/-2.01 0.494 pCi/g Radium-226 0.892 +/-0.172 0.0511 +/-0.172 0.107 pCi/g Silver- 108m U -0.0185 +/-0.0314 0.0213 +/-0.0314 0.0448 pCi/g Thallium-208 0.493 +/-0.0924 0.0282 +/-0.0924 0.0591 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 61

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-007F Proiect: YANKO 1204 Sample ID: 166485015 ClientID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

62

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-01 OF Project: YANKO 1204 Sample ID: 166485016 Client ID: YANKOOI Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 16.8%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gammna,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.605 +/-0.110 0.031 +/-0.110 0.0658 pCi/g MJHI1 07/14/06 0900 546509 1 Americium-241 U -0.0244 +/-0.0266 0.0238 +/-0.0266 0.0488 pCi/g Bismuth-212 0.373 +/-0.169 0.0748 +/-0.169 0.157 pCi/g Bismuth-214 0.430 +/-0.0613 0.0183 +/-0.0613 0.0383 pCi/g Cesium- 134 UI 0.00 +/-0.0154 0.0124 +/-0.0154 0.0259 pCi/g Cesium-137 0.0203 +/-0.014 0.00966 +/-0.014 0.0203 pCi/g Cobalt-60 U -0.00107 +/-0.011 0.00899 +/-0.011 0.0195 pCi/g Europium- 152 U 0.0117 +/-0.029 0.0262 +/-0.029 0.0543 pCi/g Europium- 154 U 0.015 +/-0.0351 0.0303 +/-0.0351 0.0646 pCi/g Europium- 155 U 0.0327 +/-0.0296 0.0271 +/-0.0296 0.0556 pCi/g Lead-212 0.439 +/-0.0561 0.0188 +/-0.0561 0.0385 pCi/g Lead-214 0.431 +/-0.0597 0.018 +/-0.0597 0.0373 pCi/g Manganese-54 U 0.00698 +/-0.0205 0.0104 +/-0.0205 0.0218 pCi/g Niobium-94 U 0.0103 +/-0.0156 0.00921 +/-0.0156 0.0193 pCi/g Potassium-40 10.9 +/-0.801 0.0763 +/-0.801 0.167 pCi/g Radium-226 0.430 +/-0.0613 0.0183 +/-0.0613 0.0383 pCi/g Silver- 108m U 0.00369 +/-0.0102 0.00904 +/-0.0102 0.0188 pCi/g Thallium-208 0.178 +/-0.0301 0.00996 +/-0.0301 0.0208 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 63

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-01OF Project: YANK0 1204 Sample ID: 166485016 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

64

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-011F Project: YANKO 1204 Sample ID: 166485017 Client ID: YANK001 Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 26.8%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Ganmna,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 1.32 +/-0.245 0.0887 +/-0.245 0.188 pCi/g MJHI 07/13/062351 546509 1 Americium-241 U -0.0687 +/-0.111 0.0878 +/-0.111 0.180 pCi/g Bismuth-212 0.841 +/-0.409 0.186 +/-0.409 0.392 pCi/g Bismuth-214 0.995 +/-0.133 0.0452 +/-0.133 0.0946 pCi/g Cesium-134 UI 0.00 +/-0.0521 0.0332 +/-0.0521 0.0693 pCi/g Cesium-137 0.185 +/-0.0523 0.0231 +/-0.0523 0.0487 pCi/g Cobalt-60 U -0.0277 +/-0.0327 0.0247 +/-0.0327 0.0535 pCi/g Europium-152 U 0.0195 +/-0.0724 0.0594 +/-0.0724 0.123 pCi/g Europium-154 U 0.0374 +/-0.0996 0.0845 +/-0.0996 0.180 pCi/g Europium-155 U 0.0589 +/-0.0991 0.0614 +/-0.0991 0.126 pCi/g Lead-212 1.40 +/-0.0888 0.0335 +/-0.0888 0.069 pCi/g Lead-214 0.943 +/-0.127 0.0404 +/-0.127 0.0841 pCi/g Manganese-54 UI 0.00 +/-0.0329 0.0255 +/-0.0329 0.0536 pCi/g Niobium-94 U 0.0218 +/-0.0269 0.0232 +/-0.0269 0.0485 pCi/g Potassium-40 20.9 +/-1.31 0.198 +/-1.31 0.438 pCi/g Radium-226 0.995 +/-0.133 0.0452 +/-0.133 0.0946 pCi/g Silver-108m U 0.00578 +/-0.0252 0.0204 +/-0.0252 0.0426 pCi/g Thallium-208 0.427 +/-0.0742 0.0228 +/-0.0742 0.0479 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 65

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-01 IF Project: YANK01204 Sample ID: 166485017 Client ID: YANKOO Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded i Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

66

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-015F Project: YANK01204 Sample ID: 166485018 Client ID: YANK001 Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 13.2%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.965 +1-0.150 0.0424 +/-0.150 0.090 pCi/g MJHI-l 07/13/06 2356 546509 1 Americium-241 U 0.0246 +/-0.075 0.0665 +/-0.075 0.136 pCi/g Bismuth-212 0.674 +/-0.210 0.100 +/-0.210 0.210 pCi/g Bismuth-214 0.568 +/-0.0637 0.0246 +/-0.0637 0.0514 pCi/g Cesium-134 UI 0.00 +/-0.0311 0.0185 +/-0.0311 0.0386 pCi/g Cesium-137 U 0.0261 +/-0.0232 0.0129 +/-0.0232 0.0271 pCi/g Cobalt-60 U 0.00063 +/-0.0155 0.0131 +/-0.0155 0.0283 pCi/g Europium-152 U 0.001 +/-0.0394 0.0336 +/-0.0394 0.0696 pCi/g Europium-154 U 0.0398 +/-0.0529 0.0473 +/-0.0529 0.100 pCi/g Europium-155 UI 0.00 +/-0.0681 0.0404 +/-0.0681 0.0826 pCi/g Lead-212 0.948 +/-0.0493 0.0191 +/-0.0493 0.0393 pCi/g Lead-214 0.666 +/-0.0729 0.0254 +/-0.0729 0.0526 pCi/g Manganese-54 U 0.00191 +/-0.0315 0.0138 +/-0.0315 0.0289 pCi/g Niobium-94 U 0.00175 +/-0.0143 0.0123 +/-0.0143 0.0257 pCi/g Potassium-40 16.5 +/-0.769 0.123 +/-0.769 0.267 pCi/g Radium-226 0.568 +/-0.0637 0.0246 +/-0.0637 0.0514 pCi/g Silver-108m U -0.00293 +/-0.0125 0.0111 +/-0.0125 0.0231 pCi/g Thallium-208 0.267 +/-0.0339 0.0123 +/-0.0339 0.0258 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 67

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-015F Project: YANKO 1204 Sample ID: 166485018 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

68

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analwvis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-006FS Proiect: YANKO 1204 Sample ID: 166485019 Client ID: YANKOO Matrix: Soil Vol. Recv.:

Collect Date: 19-JUN-06 Receive Date: 06-JUL-06 Collector: Client Moisture: 13.6%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.455 +/-0.0933 0.0345 +/-0.0933 0.0736 pCi/g MJH1 07/14/06 0933 546509 1 4

Americium-2 1 U 0.0329 +/-0.0495 0.044 +/-0.0495 0.0905 pCi/g Bismuth-212 0.292 +/-0.145 0.075 +1-0.145 0.159 pCi/g Bismuth-214 0.257 +/-0.0489 0.0193 +/-0.0489 0.0406 pCi/g Cesium-134 U1 0.00 +/-0.0258 0.0143 +/-0.0258 0.0299 pCi/g Cesium-137 0.0253 +/-0.0204 0.00969 +/-0.0204 0.0205 pCi/g Cobalt-60 U 0.00689 +/-0.0116 0.0105 +/-0.0116 0.0229 pCi/g Europium-152 U 0.00774 +/-0.029 0.0269 +/-0.029 0.0559 pCi/g 4 0.0329 +/-0.038 pCi/g Europium-15 U 0.0045 +/-0.038 0.0705 Europium-155 U 0.0124 +/-0.0314 0.0296 +/-0.0314 0.0607 pCi/g Lead-212 0.414 +/-0.0339 0.0156 +/-0.0339 0.0323 pCi/g Lead-214 0.352 +/-0.0534 0.0188 +/-0.0534 0.0392 pCi/g 4

Manganese-5 U 0.00312 +/-0.0117 0.0101 +/-0.0117 0.0214 pCi/g Niobium-94 U 0.011 +/-0.0103 0.00952 +/-0.0103 0.0201 pCi/g Potassium-40 11.0 +/-0.584 0.0975 +/-0.584 0.213 pCi/g Radium-226 0.257 +/-0.0489 0.0193 +/-0.0489 0.0406 pCi/g Silver-108m U 0.00474 +/-0.00969 0.00894 +/-0.00969 0.0187 pCi/g Thallium-208 0.130 +/-0.0219 0.0099 +/-0.0219 0.0209 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SXW2 07/06/06 1741 545648 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 69

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: July 20, 2006 Contact: Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9508-0000-006FS Project: YANK01204 Sample ID: 166485019 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

70

I. .f QUALITY CONTROL DATA 71

QUALITY CONTROL DATA 71

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Report Date: July 20, 2006 Client : Connecticut Yankee Atomic Power Page 1 of 9 362 Injun Hollow Rd East Hampton, Connecticut Contact: Mr. Jack McCarthy Workorder: 166485 Parmname NOM Samnle Oual QC Units RPD% REC% Range Anlst Date Time Rad Alpha Spec Batch 545706 QC1201129854 166485001 DUP Americium-241 U 0.0102 U 0.063 pCi/g 144 (0%- 100%) iCWI 07/13/06 13:20 Uncert: +/-0.0848 +/-0.104 TPU: +/-0.0848 +/-0.104 Curium-242 U 0.0611 U 0.00 pCi/g 0 (0%- 100%)

Uncert: +/-0.0846 +/-0.096 TPU: +/-0.0849 +/-0.096 Curium-243/244 U 0.00775 U -0.0107 pCi/g 1250 (0%- 100%)

Uncert: +/-0.0588 +/-0.0895 TPU: +/-0.0588 +/-0.0896 QC1201129856 LCS Americium-241 11.5 12.8 pCi/g I11 (75%-125%)

Uncert: +/-1.70 TPU: +/-2.57 Curium-242 U 0.0591 pCi/g Uncert: +/-0.116 TPU: +/-0.116 Curium-243/244 14.0 17.2 pCi/g 123 (75%-125%)

Uncert: +/-1.97 TPU: +/-3.25 QCI201129853 MB Americium-241 U -0.017 pG i/g Uncert: +/-0.0319 TPU: +/-0.0319 Curium-242 U 0.0519 pCi/g Uncert: +/-0.0829 TPU: +/-0.0832 Curium-243/244 U 0.0222 pCi/g Uncert: +/-0.0588 TPU: +/-0.0589 QC1201129855 166485001 MS Americium-241 11.5 U 0.0102 11.3 pCi/g 98 (75%-125%)

Uncert: +/-0.0848 +/- 1.20 TPU: +/-0.0848 +/-1.86 Curium-242 U 0.0611 U 0.0466 pCi/g Uncert: +/-0.0846 +/-0.105 TPU: +/-0.0849 +/-0.105 Curium-243/244 14.0 U 0.00775 14.2 pCi/g 101 (75%-125%)

Uncert: +/-0.0588 +/-1.34 TPU: +/-0.0588 +/-2.24 Batch 545707 QC1201129858 166485001 DUP Plutonium-238 U -0.0113 U 0.0242 pCi/g 550 (0% - 100%) -CW1 07/12/06 18:16 72

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 166485 Page 2 of 9 Parmname NOM Sample Qual OC Units RPD% REC% Ran2e Anist Date Time Rad Alpha Spec Batch 545707 Uncert: +/-0.0489 +/-0.0474 TPU: +/-0.0489 +/-0.0475 Plutonium-239/240 u -0.00566 U 0.00 pCi/g 200 (0%- 100%)

Uncert: +/-0.0476 +/-0.0474 TPU: +/-0.0476 +/-0.0474 QC1201129860 LCS Plutonium-238 U 0.0919 pCi/g (75%-125%) 07/12/06 18:16 Uncert: +/-0.0965 TPU: +/-0.097 Plutonium-239/240 10.7 9.81 pCi/g 92 (75%-125%)

Uncert: +/-0.960 TPU: +/-1.46 QC1201129857 MB Plutonium-238 U -0.0464 pCi/g 07/12/06 18:20 Uncert: +/-0.258 TPU: +/-0.258 Plutonium-239/240 U -0.193 pCi/g Uncen: +/-0.162 TPU: +/-0.164 QC1201129859 166485001 MS Plutonium-238 U -0.0113 U 0.0391 pCi/g (75%-125%) 07/12/06 18:16 Uncert: +/-0.0489 +/-0.0624 TPU: +/-0.0489 +/-0.0625 Plutonium-239/240 10.7 U -0.00566 10.1 pCi/g 94 (75%-125%)

Uncert: +/-0.0476 +/-0.927 TPU: +/-0.0476 +/-1.45 Batch 545708 QC1201129862 166485001 DUP Plutonium-241 u -5.45 U -2.56 pCi/g 0 (0% - 100%) -CW I 07/14/06 23:04 Uncert: +/-10.3 +/-7.77 TPU: +/-10.3 +/-7.77 QC1201129864 LCS Plutonium-241 123 104 pCi/g 85 (75%-125%) 07/14/06 23:36 Uncert: +/-12.4 TPU: +/-16.0 QC1201129861 MB Plutonium-241 U -4.25 pCi/g 07/14/06 22:48 Uncert: +/-15.4 TPU: +/-15.4 QC1201129863 166485001 MS Plutonium-241 123 U -5.45 106 pCi/g 87 (75%-125%) 07/14/06 23:20 Uncert: +/-10.3 +/-12.3 TPU: +/-10.3 +/-16.5 Rad Gamma Spec Batch 546509 QC1201131761 166485001 DUP Actinium-228 1.51 1.39 pCi/g 3 (0% - 100%) MJHI 07/13/06 23:52 Uncert: +/-0.163 +/-0.281

+/-0.281 73

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 166485 Page 3 of 9 Parmname NOM Sample Oual OC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 546509 TPU: +/-0.163 Americium-241 U -0.0142 U 0.0362 pCi/g 339 (0%- 100%)

Uncert: +/-0.105 +/-0.0522 TPU: +/-0.105 +/-0.0522 Bismuth-212 0.725 0.481 pCi/g 47 (0%- 100%)

Uncert: +/-0.230 +/-0.470 TPU: +/-0.230 +/-0.470 Bismuth-214 0.961 0.840 pCi/g 15 (0%- 100%)

Uncert: +/-0.0798 +/-0.144 TPU: +/-0.0798 +/-0.144 Cesium- 134 UI 0.00 U 0.0617 pCi/g 47 (0%- 100%)

Uncert: +/-0.028 +/-0.0645 TPU: +/-0.028 +/-0.0645 Cesium-137 0.223 0.0954 pCi/g 86 (0%- 100%)

Uncert: +/-0.0279 +/-0.0621 TPU: +/-0.0279 +/-0.0621 Cobalt-60 U 0.00603 U 0.0072 pCi/g 10 (0%- 100%)

Uncert: +/-0.0175 +/-0.0364 TPU: +/-0.0175 +/-0.0364 Europium- 152 U 0.030 U -0.0713 pCi/g 1280 (0%- 100%)

Uncert: +/-0.0417 +/-0.0795 TPU: +/-0.0417 +/-0.0795 Europium- 154 U 0.00872 U 0.0312 pCi/g 94 (0%- 100%)

Uncert: +/-0.0555 +/-0.108 TPU: +1-0.0555 +/-0.108 Europium- 155 UI 0.00 UI 0.00 pCi/g 47 (0%- 100%)

Uncert: +/-0.0665 +/-0.118 TPU: +/-0.0665 +/-0.118 Lead-212 1.47 1.03 pCi/g 35 (0%- 20%)

Uncert: +1-0.0585 +/-0.0981 TPU: +/-0.0585 +/-0.0981 Lead-214 1.25 1.04 pCi/g 8 (0%-20%)

Uncert: +/-0.0869 +/-0.142 TPU: +/-0.0869 +/-0.142 Manganese-54 0.0411 U 0.0411 pCi/g 23 (0%- 100%)

Uncert: +/-0.0211 +/-0.0459 TPU: +/-0.0211 +/-0.0459 Niobium-94 U 0.00425 U 0.0313 pCi/g 165 (0%- 100%)

Uncert: +/-0.0156 +/-0.0299 TPU: +/-0.0156 +/-0.0299 Potassium-40 24.5 21.6 pCi/g 13 (0%- 20%)

Uncert: +/-0.783 +/-1.28 TPU: +/-0.783 +/-1.28 Radium-226 0.961 0.840 pCi/g 15 (0%- 100%)

Uncert: +/-0.0798 +/-0.144 TPU: +/-0.0798 +/-0.144 Silver- 108m U -5.020E-06 U -0.0299 pCi/g 192 (0%- 100%)

Uncert: +/-0.0142 +/-0.0266 74

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 166485 Page 4 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 546509 TPU: +/-0.0142 +/-0.0266 Thallium-208 0.416 0.431 pCi/g 10 (0% - 20%)

Uncert: +/-0.0436 +/-0.0708

+/-0.0436 +/-0.0708 TPU:

QC1201131762 LCS Actinium-228 U -0.118 pCi/g 07/14/06 09:33 Uncert: +/-0.552 TPU: +/-0.552 Americium-24 I 23.4 25.0 pCi/g 107 (75%-125%)

Uncert: +/-0.596 TPU: +/-0.596 Bismuth-212 U 0.311 pCi/g Uncert: +/-1.14 TPU: +/-1.14 Bismuth-214 U 0.0606 pCi/g Uncert: +/-0.228 TPU: +/-0.228 Cesium-134 U -0.0983 pCi/g Uncert: +/-0.152 TPU: +/-0.152 Cesium-137 9.61 10.6 pCi/g 110 (75%-125%)

Uncert: +/-0.449 TPU: +/-0.449 Cobalt-60 14.8 15.4 pCi/g 104 (75%-125%)

Uncert: +/-0.668 TPU: +/-0.668 Europium- 152 U 0.117 pCi/g Uncert: +/-0.263 TPU: +/-0.263 Europium- 154 U 0.135 pCi/g Uncert: +/-0.316 TPU: +/-0.316 Europium- 155 U -0.171 pCi/g Uncert: +/-0.234 TPU: +/-0.234 Lead-212 U 0.031 pCi/g Uncert: +/-0.143 TPU: +/-0.143 Lead-214 U -0.0322 pCi/g Uncert: +/-0.198 TPU: +/-0.198 Manganese-54 U -0.0542 pCi/g Uncert: +/-0.142 TPU: +/-0.142 Niobium-94 U -0.0255 pCi/g Uncert: +/-0.122 TPU: +/-0.122 Potassium-40 U -0.328 pCi/g 75

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn QC Summary Workorder: 166485 Page 5 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 546509 Uncert: +/-1.47 TPU: +/-1.47 Radium-226 U 0.0606 pCi/g (75%-125%)

Uncert: +/-0.228 TPU: +/-0.228 Silver-108m U -0.0692 pCi/g Uncert: +/-0.101 TPU: +/-0.101 Thallium-208 U -0.0338 pCi/g Uncert: +/-0.116 TPU: +/-0.116 QCI201131760 MB Actinium-228 U 0.0192 pCi/g 07/13/06 20:49 Uncert: +/-0.0422 TPU: +/-0.0422 Americium-241 U -0.0257 pCi/g Uncert: +/-0.0579 TPU: +/-0.0579 Bismuth-212 U 0.0418 pCi/g Uncert: +/-0.0758 TPU: +/-0.0758 Bismuth-214 U -0.01 pCi/g Uncert: +/-0.0232 TPU: +/-0.0232 Cesium- 134 U 0.00565 pCi/g Uncert: +/-0.0111 TPU: +/-0.0111 Cesium-137 U 0.00311 pCi/g Uncert: +/-0.0108 TPU: +/-0.0108 Cobalt-60 U 0.00966 pCi/g Uncert: +/-0.0116 TPU: +/-0.0116 Europium- 152 U -0.00476 pCi/g Uncert: +/-0.0321 TPU: +/-0.0321 Europium- 154 U -0.0449 pCi/g Uncert: +/-0.0403 TPU: +/-0.0403 Europium- 155 U -0.0177 pCi/g Uncert: +/-0.0282 TPU: +/-0.0282 Lead-212 U 0.0255 pCi/g Uncert: +/-0.033 TPU: +/-0.033 Lead-214 U 0.0151 pCi/g Uncert: +/-0.0214 TPU: +/-0.0214 76

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 166485 Page 6 of 9 Parmname NOM Samnle Oual OC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 546509 Manganese-54 U -0.00548 pCi/g Uncert: +/-0.0108 TPU: +/-0.0108 Niobium-94 U -7.880E-05 pCi/g Uncert: +/-0.011 TPU: +/-0.011 Potassium-40 U 0.157 pCi/g Uncert: +/-0.137 TPU: +/-0.137 Radium-226 U -0.01 pCi/g Uncert: -/-0.0232 TPU: +/-0.0232 Silver-108m U 0.00652 pCi/g Uncert: +/-0.0107 TPU: +/-0.0107 Thallium-208 U 0.00721 pCi/g Uncert: +/-0.0109 TPU: +/-0.0109 Rad Gas Flow Batch 545960 QC1201130463 166485002 DUP Strontium-90 U -0.000179 U -0.00245 pCi/g 0 (0%- 100%) BXFI 07/13/06 18:52 Uncert: +/-0.0163 +/-0.0146 TPU: +/-0.0163 +/-0.0146 QC1201130465 LCS Strontium-90 1.43 1.48 pCi/g 103 (75%-125%) 07/13/06 18:52 Uncert: +/-0.101 TPU: +/-0.108 QCI201130462 MB Strontium-90 U -0.00474 pCi/g 07/13/06 18:52 Uncert: +/-0.0146 TPU: +/-0.0146 QC1201130464 166485002 MS Strontium-90 1.48 U -0.000179 1.16 pCi/g 78 (75%-125%) 07/13/06 18:52 Uncert: +/-0.0163 +/-0.0878 TPU: +/-0.0163 +/-0.093 Rad Liquid Scintillation Batch 545859 QC1201130224 164553003 DUP Tritium U 0.0984 U 0.189 pCi/g 0 (0% - 100%) NXPI 07/16/06 06:25 Uncert: +/-0.579 +/-0.559 TPU: +/-0.579 +/-0.559 QC1201130226 LCS Tritium 4.57 4.39 pCi/g 96 (75%-125%) 07/16/06 09:26 Uncert: +/-0.405 TPU: +/-0.412 QC1201130223 MB Tritium U 0.403 pCi/g 07/16/06 04:54 77

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 166485 Page 7 of 9 P~armnnme NOM Samnle Oual OC Units RPD% REC% Range AnIst Date Time Parmname NOM Sample 11al Rad Liquid Scintillation Batch 545859 Uncert: +/-0.309 TPU: +/-0.309 QC1201130225 164553003 MS Tritium 4.48 U 0.0984 4.73 pCi/g 106 (75%-125%) 07/16/06 07:56 Uncert: +/-0.579 +/-0.617 TPU: +/-0.579 +/-0.623 Batch 545863 QC1201130240 166485002 DUP Technetium-99 U 0.372 U 0.100 pCi/g 0 (0%- 100%) EGDI 07/19/06 07:00 Uncert: +/-0.297 +/-0.249 TPU: +/-0.297 +/-0.249 QC1201130242 LCS Technetium-99 12.9 10.5 pCi/g 81 (75%-125%) 07/16/06 07:45 Uncert: +/-0.480 TPU: +/-0.536 QC1201130239 MB Technetium-99 U 0.165 pCi/g 07/16/06 06:56 Uncert: +/-0.265 TPU: +/-0.265 QC1201130241 166485002 MS Technetium-99 13.0 U 0.372 9.85 pCilg 76 (75%-125%) 07/16/06 07:28 Uncert: +/-0.297 +/-0.531 TPU: +/-0.297 +/-0.577 Batch 545967 QC1201130485 166485001 DUP Iron-55 U -13.4 U -10.2 pCi/g 0 (0%- 100%) SLNI 07/15/06 02:57 Uncert: +/-15.9 +/-15.2 TPU: +/-16.0 +/-15.3 QC1201130487 LCS Iron-55 571 580 pCi/g 102 (75%-125%) 07/15/06 04:00 Uncert: +/-39.5 TPU: +/-82.9 QCI201130484 MB Iron-55 U -20.9 pCi/g 07/15/06 02:26 Uncert: +/-21.9 TPU: +/-22.1 QC1201130486 166485001 MS Iron-55 579 U -13.4 632 pCi/g 109 (75%-125%) 07/15/06 03:29 Uncert: +/-15.9 +/-33.0 TPU: +/-16.0 +/-90.8 Batch 545969 QCI201130489 166485001 DUP Nickel-63 16.2 U 13.1 pCi/g 21 (0% - 100%) SLN1 07/18/06 13:47 Uncert: +/-7.96 +/-8.14 TPU: +/-7.98 +/-8.15 QC1201130491 LCS Nickel-63 565 477 pCi/g 84 (75%-125%) 07/18/06 14:50 Uncert: +/-16.4 TPU: +/-22.7 78

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn QC Summary Workorder: 166485 Page 8 of 9 Parmname NOM Samnle Onal QC Units RPD% REC% Range Anist Date Time Rad Liquid Scintillation Batch 545969 QCI201130488 MB Nickel-63 U 6.25 pCi/g 07/18/06 13:15 Uncert: +/-7.57 TPU: +/-7.57 QC1201130490 166485001 MS Nickel-63 592 16.2 543 pCi/g 89 (75%-125%) 07/18/06 14:18 Uncert: +/-7.96 +/-17.9 TPU: +/-7.98 +/-25.6 Batch 547646 QC1201134170 166485002 DUP Carbon-14 U 0.0147 U -0.0833 pCi/g 0 (0% - 100%) ATH2 07/17/06 22:38 Uncert: +/-0.115 +/-0.108 TPU: +/-0.115 +/-0.108 QC1201134172 LCS Carbon- 14 7.27 7.16 pCi/g 99 (75%-125%) 07/18/06 00:43 Uncert: +/-0.210 TPU: +/-0.237 QC0201134169 MB Carbon- 14 U -0.0396 pCi/g 07/17/06 21:35 Uncert: +/-0.122 TPU: +/-0.122 QC1201134171 166485002 MS Carbon-14 15.2 U 0.0147 15.4 pCi/g 101 (75%-125%) 07/17/06 23:40 Uncert: +1-0.115 +/-0.443 TPU: +/-0.115 +/-0.504 Notes:

The Qualifiers in this report are defined as follows:

A quality control analyte recovery is outside of specified acceptance criteria Result is less than value reported Result is greater than value reported A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample H Analytical holding time was exceeded J Value is estimated N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

U1 Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL 79

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 166485 Page 9 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time h Preparation or preservation holding time was exceeded N/A indicates that spike recovery limits do not apply when sample concentration exceeds spike cone. by a factor of 4 or more.

- Indicates analyte is a surrogate compound.

A The Relative Percent Difference (RPD) obtained from the sample duplicate (DUP) is evaluated against the acceptence criteria when the sample is greater than five times (5X) the contract required detection limit (RL). In cases where either the sample or duplicate value is less than 5X the RL, a control limit of +/- the RL is used to evaluate the DUP result.

For PS, PSD, and SDILT results, the values listed are the measured amounts, not final concentrations.

Where the analytical method has been performed under NELAP certification, the analysis has met all of the requirements of the NELAC standard unless qualified on the QC Summary.

80

POND SURVEY UNIT 9508-0000 RELEASE RECORD Attachment 2b Split Sample Assessment Forms (2 Pages)

Connecticut Yankee Decommissioning Project Health 24265-000-GPR-GGGR-R5124-000 Attachment A Physics Procedure Split Sample Assessment Form Survey Area 9508 Survey 0000 Survey Pond 9: Unit #: Unit Name:

Sample Plan or WPIR#: 2006-027 SML #: 9508-0000-006FS Sample

Description:

Comparison of split samples collected from sample measurement location #06 and analyzed using gamma spectroscopy by an off-site vendor laboratory. The standard sample was 9508-0000-006F the comparison sample was 9508-0000-006FS.

STANDARD COMPARISON Radionuclide Activity Standard Resolution Agreement Activity Standard Comparison Acceptable (Y/N)

Value Error Range Value Error Ratio Cs-137 2.68E-02 1.17E-02 2 NONE - 2.53E-02 1.02E-02 0.94 NA K-40 1.08E+01 3.16E-01 34 0.75- 1.33 1.10E+01 2.92E-01 1.02 Y Comments/Corrective Actions: In consideration of Cs-137 Table is provided to show acceptance criteria used results, guidance for agreement ranges, obtained from USNRC to assess split samples.

Inspection Procedure 84750, does not address resolution ratios less than 4, therefore, a determination of acceptability for such Resolution Agreement Range rations cannot be made. The agreement level for K-40 was 4 7 0.50 2.00 found to be acceptable, no further actions are warranted. 8 15 0.60 1.66 16 50 0.75 1.33 51 200 0.80 1.25

> 200 0.85 1.18 Performed By:

WPIR - Work Plan and Inspection Record SML - Sample Measurement Location designation Page I of I

Connecticut Yankee Decommissioning Project Health 24265-000-GPR-GGGR-R5124-000 Attachment A Physics Procedure Split Sample Assessment Form Survey 9508 Survey 0000 Survey Unit Pond Area#: Unit #: Name:

Sample Plan or WPIR#: 2006-0027 SML #: 9508-0000-012FS Sample

Description:

Comparison of split samples collected from sample measurement location #12 and analyzed using gamma spectroscopy by an off-site vendor laboratory. The standard sample was 9508-0000-012F, the comparison sample was 9508-0000-012FS.

STANDARD COMPARISON Radionuclide Activity Standard Resolution Agreement Activity Standard Comparison Acceptable (Y/N)

Value Error Range Value Error Ratio Cs-137 4.79E-02 1.25E-02 4 0.5 2 2.68E-02 7.45E-03 0.56 Y K-40 1.1lE+01 4.71E-01 24 0.75 1.33 1.25E+01 2.59E-01 1.13 Y Comments/Corrective Actions: The agreement level for Cs-137 Table is provided to show acceptance criteria used and K-40 were found to be acceptable, no further actions are to assess split samples.

warranted.

Resolution Agreement Range 4 7 0.50 2.00 8 15 0.60 1.66 16 50 0.75 1.33 51 200 0.80 1.25

> 200 0.85 1.18 Performed By: Date:Reviewed By: Date:

zwý'el 1ý1flo6/ 1/ 06 WPIR - Work Plan and Inspection Record SML - Sample Measurement Location designation Page I of I

POND SURVEY UNIT 9508-0000 RELEASE RECORD Attachment 2c Preliminary Data Forms (1 Page)

Health Physics Procedure GPP-GGGR-R512 1-001 Attachment B, Rev. CY-00 I MAJOR Health Physics Procedure GPP-GGGR-R5 121-001 Attachment B, Rev. CY-00 I MAJOR Preliminary Data Review Form - Samples for the Sign Test Survey Unit: 9508- 0000 Survey Unit Name: Pond Classification: 3 Survey Media: Soil Type of Survey: Final Status Survey Type of Measurement: Radionuclide Specific Number of Measurements: 15 Operational DCGL (pCi/g) 6.01E+00 BASIC STATISTICAL QUANTITIES Cs-137 Minimum Value: -5.23E-03 Maximum Value: 9.76E-01 Mean: 1.28E-01 Median: 3.36E-02 Standard Deviation: 2.46E-01 RADIONUCLIDE CONCENTRATION (pCi/g)

NUMBER Cs-137 Identified?

9508-0000-00IF -5.23E-03 N 9508-0000-002F 1.1OE-02 N 9508-0000-003F 1.76E-01 Y 9508-0000-004F 1.1OE-02 N 9508-0000-005F 9.76E-01 Y 9508-0000-006F 2.68E-02 Y 9508-0000-007F 1.16E-01 Y 9508-0000-009F 3.36E-02 Y 9508-0000-01OF 2.03E-02 Y 9508-0000-01 IF 1.85E-01 N 9508-0000-012F 4.790E-02 Y 9508-0000-013F 8.02E-02 Y 9508-0000-014F 2.23E-01 Y 9508-0000-015F 2.61 E-02 Y 9508-0000-016F -2.99E-04 N Performed By: _.'_ _ ____ Date: 1111/71e" Independent Review: Date: A6ý6

POND SURVEY UNIT 9508-0000 RELEASE RECORD Attachment 2d Graphical Representation of Data (2 Pages)

Health Physics Procedure GGGR-R5123-Rev.CY-001 Attachment C Health Physics Procedure GGGR-R5 123 -Rev.CY-OO 1 Attachment C Quantile Plot For Cesium - 137 Survey Unit: 9508-0000 Survey Unit Name: Pond Mean: 1.28E-01 pCi/g 1.20E+00

_ 1.OOE+O0 8.OOE-01 0 6.OOE-01 4.OOE-01 2.OOE-01 0

O.OOE+00

-2.OOE-01 Percentage Cs-1 37 Rank Percentage

-5.23E-03 1 3 %

-2.99E-04 2 10 %

1.1OE-02 3 17 %

1.1OE-02 4 23 %

2.03E-02 5 30 %

2.61 E-02 6 37 %

2.68E-02 7 43 %

3.36E-02 8 50 %

4.79E-02 9 57 %

8.02E-02 10 63 %

1.16E-01 11 70 %

1.76E-01 12 77 %

1.85E-01 13 83 %

2.23E-01 14 90 %

9.76E-01 15 97 %

Prepared By: Date:

Reviewed By: / ,J' 94/ Date:

1-6

Health Physics Procedure GGGR-R5123-Rev.CY-001 Attachment C Frequency Plot For Cs - 137 Survey Unit: 9508-0000 Survey Unit Name: Pond Mean: 0.128 pCi/g 14-12--

f,8-6-- Up L_. 4 ---

U1 0.00 0.25 0.50 0.75 1.00 Upper End Value (pCi/g)

Upper End Observation Observation %

Value Frequency Frequency 0.00 2 13%

0.25 12 80%

0.50 0 0%

0.75 0 0%

1.00 1 7%

Total 15 100%

Prepared By: Date: 11*,g/0/"

=Y 5 Reviewed By: Date: // 6-

POND SURVEY UNIT 9508-0000 RELEASE RECORD Attachment 2e Sign Test Calculation (1 Page)

Health Physics Procedure GPP-GGGR-R512 1-000 Attachment A, Rev. CY-00 I MAJOR HealthPyisPocdrI P-GR-52-0 ttcmn ,Rv.C- NAO Sign Test Calculation Sheet For Multiple Radionuelisdes Survey Unit Number: 9508-0000 Survey Unit Name: Pond WP&IR#: 2006-0027 Classification : 3 TYPE I (c* error):0.05 TYPE I (03error):0.05 Radionuclides: Cs-137 Survey Design DCGL (pCi/g): 6.01 Cs-137 Results Weighted Sum (W,) DCGL-Result Sign

-5.23E-03 -8.70E-04 1.00E+00 I 1.1OE-02 1.83E-03 9.98E-01 1 1.76E-01 2.93E-02 9.71E-01 1 1.1OE-02 1.83E-03 9.98E-01 I 9.76E-01 1.62E-01 8.38E-01 I 2.68E-02 4.46E-03 9.96E-01 I 1.16E-01 1.93E-02 9.81E-01 1 3.36E-02 5.59E-03 9.94E-01 I 2.03E-02 3.38E-03 9.97E-01 I 1.85E-01 3.08E-02 9.69E-01 I 4.79E-02 7.97E-03 9.92E-01 I 8.02E-02 1.33E-02 9.87E-01 1 2.23E-01 3.71E-02 9.63E-01 1 2.61E-02 4.34E-03 9.96E-01 1

-2.99E-04 -4.98E-05 1.00E+00 1 Number of Positive Differences (S+): 15 Critical Value: 11 Survey Unit: Meets Acceptance Criterion Performed By: Date:

Independent Review: _____________________Date: //-/! '-6 Page 1 of 1

POND SURVEY UNIT 9508-0000 RELEASE RECORD Attachment 2f COMPASS DQA Surface Soil Report with Retrospective Power Curve (2 Pages)

DQA Surface Soil Report Assessment Summary Site: 9508-0000 (19 mrem/yr)

Planner(s): A. Hammond Survey Unit Name: Pond Report Number: 2 Survey Unit Samples: 15 Reference Area Samples: 0 Test Performed: Sign Test Result: Not Performed Judgmental Samples: 0 EMC Result: Not Performed Assessment

Conclusion:

Reject Null Hypothesis (Survey Unit PASSES)

Retrospective Power Curve 1

0.9

'4-0.8 U

.4-I 0.7 0.6 0.5 ii_ _ _~jr 0.4 0.3 E

0.2 0.1 0

0 1 2 3 4 5 6 7 Soil Concextratixon (Cig), inlumiia backgelrnd Prospective Power E 1-beta .... Actual Power

-- LBGR - , Estimated Power DCGL ---- Retrospective Power vi .0.0 1111012006 Page 1 COMPASS vl.0.0 COMPASS 11/1012006 Page 1

'U- DQA Surface Soil Report Survey Unit Data NOTE: Type = "S"indicates survey unit sample.

Type = "R" indicates reference area sample.

Sample Number Type Cs-137 (pCilg) 9508-0000-001 F S -0.01 9508-0000-002F S 0.01 9508-0000-003F S 0.18 9508-0000-004F S 0.01 9508-0000-005F S 0.98 9508-0000-006F S 0.03 9508-0000-007F S 0.12 9508-0000-009F S 0.03 9508-0000-01 OF S 0.02 9508-0000-011 F S 0.18 9508-0000-012F S 0.05 9508-0000-013F S 0.08 9508-0000-014F S 0.22 9508-0000-015F S 0.03 9508-0000-016F S 0 Basic Statistical Quantities Summary Statistic Survey Unit Background DQO Results Sample Number 15 N/A N=13 Mean (pCi/g) 0.13 N/A 0.1 Median (pCi/g) 0.03 N/A N/A Std Dev (pCi/g) 0.25 N/A 0.198 High Value (pCi/g) 0.98 N/A N/A Low Value (pCi/g) -0.01 N/A N/A

.0.0 11/10/2006 Page 2 COMPASS vi COMPASS vl.0.0 111110/2006 Page 2

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