ML070740610

Final Status Survey Final Report Phase VI - Appendix A5, Survey Unit Release Record 9512-0000, Northwest Site Grounds (Non-Protected Area), Book 6 of 18

ML070740610
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Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	02/01/2007
From:	Hammond A Connecticut Yankee Atomic Power Co
To:	Office of Nuclear Material Safety and Safeguards
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Download: ML070740610 (122)

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Final Status Survey Final Report Phase VI Appendix A5 Survey Unit Release Record 9512-0000, Northwest Site Grounds (Non-Protected Area)

February 2007

CYAPCO FINAL STATUS SURVEY RELEASE RECORD NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 Prepared By: A*ekHarnmond Date: //1///,7 FSS Engineer Reviewed By: t~ ArpýDate: c, 12~)

FSS Engineer Approved By: Date: 67 Tecmieal Support Manager Revision 0

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SURVEY UNIT 9512-0000 RELEASE RECORD TABLE OF CONTENTS

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

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

3. DATA QUALITY OBJECTIVES (DQO) .......................................... 5

4. SURV EY D ESIGN ............................................................................. 8

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

6. SURV EY RESU LTS ........................................................................ 12

7. QUALITY CONTROL .................................................................... 16

8. INVESTIGATIONS AND RESULTS ............................................. 16

9. REMEDIATION AND RESULTS ................................................... 16

10. CHANGES FROM THE FINAL STATUS SURVEY PLAN ...... 16

11. DATA QUALITY ASSESSMENT (DQA) ....................................... 17

12. AN O MA LIE S .................................................................................... 18

13. C O N C LU SION .................................................................................. 18

14. A TTA CH MEN TS ............................................................................. 19 14.1 Attachment 1 - Figures (5 pages including cover) 14.2 Attachment 2 - Scan Results (5 pages including cover) 14.3 Attachment 3 - Laboratory Data (81 pages including cover) 14.4 Attachment 4 - DQA Results (13 pages including covers)

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SURVEY UNIT 9512-0000 RELEASE RECORD SURVEY UNIT DESCRIPTION Survey Unit 9512-0000, Northwest Site Grounds, is designated as Final Status Survey (FSS) Class 3 and consists of approximately 30,701 m2 (7.58 acres) of open land area located approximately 0.007 miles from the reference coordinate system benchmark used at the Haddam Neck Plant (HNP) (see Attachment 1, Figure 1). The Northwest Site Grounds survey unit is bounded as follows: on the west by the Connecticut River; Survey Area 9506-0000, 9514-0000, 9302-0000 and 9304-0001 are to the east; Survey Area 9304-0001 is to the south and the property boundary bounds this unit to the north (called north as oriented with the north to south flow of the Connecticut River). The survey unit is comprised of predominately flat open land that slopes, slightly, from east to west toward the Connecticut River. At the far northeastern end of the survey unit, the topography changes from flat to steep hillside. The hillside is covered with large trees and thick brush. At the southern most section of the survey unit, the area is a steep hillside that falls off to the Connecticut River.

Connecticut Yankee (CY) memorandum, CY-06-093, addresses the abandonment of buried pipes, concrete, and drains onsite that will remain in place at the completion of the decommissioning. The sidewalk and two (2) electric/telephone duct banks that traverse the site adjacent to the access road will be abandoned in place. Sufficient radiological assessment has been performed to confirm that the components or structures will meet all applicable unrestricted release criteria.

The reference coordinates associated with this survey area are E002 through E008 by S039 through S064 (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 9512-0000 as Class 3 in May 2006.

The "ClassificationBasis 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 "Historic Site Assessment (HSA) Supplement, "

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SURVEY UNIT 9512-0000 RELEASE RECORD c) Historic and current survey records review, d) Visual inspections and a "walk-down."

A review of the IOCFR50.75(g)(1) database report identified one (1) significant radiological event that may have impacted this survey area.

Several small areas of low-level radioactive contaminated material were found on facility grounds through routine testing. (PIR 80-37) The radioactive material was removed and no further radioactive material was located.

The historical documents reviewed included the "'Resultsof Scoping Survey",

(performed during late 1997) and the "Historical Site Assessment". No additional information was provided that was pertinent to this survey unit.

A review of the "Initialand Supplemental CharacterizationReports " as well as the previous "ClassificationBasis Summaries " also provided no additional pertinent information.

Final characterization was performed by Site Closure personnel in May of 2005 to obtain data of sufficient quality for Final Status Survey (FSS) planning purposes. This sampling was performed under Survey Sampling Work Plan (SSWP) 05-05-014. Ten (10) soil samples were taken from ten (10) biased locations. All of the samples were analyzed on-site using gamma spectroscopy. Hard-to-Detect (HTD) analyses were conducted on one (1) of the ten (10) samples. The only plant-related radionuclide identified in the samples was Cs-137 (refer to Table 1).

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

Minimum Value: 5.44E-02 Maximum Value: 4.95E-01 Mean: 2.65E-01 Median: 2.31E-01 Standard Deviation: 1.47E-01 The FSS Engineer performed a visual inspection and walk-down during September 2006 to assess the physical condition of the survey unit, evaluate access points and travel paths and identify potentially hazardous conditions.

At the time of the walk-down the area was being used for storage of heavy equipment and over-flow parking.

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SURVEY UNIT 9512-0000 RELEASE RECORD Based upon a review of the historical information and the results of the characterization survey data, it was concluded that there was a low probability for residual radioactivity in concentrations greater than the Derived Concentration Guideline Levels (DCGLs), justifying a final survey unit classification of Class 3.

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 Final Status 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 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 the level of residual activity in the survey unit exceeded the release criteria. Therefore, the survey unit would satisfy the primary objective of the Final Status Survey Plan (FSSP).

The primary objective of the FSSP was to demonstrate that the level of residual radioactivity in Survey Unit 9512-0000 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 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.

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 1 shows the mathematical relationship between the three (3) components and the total dose.

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SURVEY UNIT 9512-0000 RELEASE RECORD Equation 1:

HTotal=Hsoil (sediment) + HExisting GW + HFuture GW The total dose under the LTP criteria is twenty five (25) mrem/yr Total Effective Dose Equivalent (TEDE) from all three (3) components. The allowable total dose under the Connecticut 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 considered affected by existing groundwater radioactive contamination (reference CY memo ISC 06-024). Therefore, the dose contribution from existing groundwater is two (2) mrem/yr TEDE.

This survey unit is not considered impacted by future groundwater radioactive contamination, as there are no radioactive concrete foundations or footings remaining within the groundwater saturated zone in the area.

Therefore, the dose contribution from future groundwater is zero (0) mrem/yr TEDE.

Equation2:

19 mrem/yrTotal= 17 mrem/yrsoil+2 mrem/yrExisting GW+O mrem/yrFuture GW The allowable dose for soil in this survey unit is seventeen (17) mrem/yr TEDE as shown by Equation 2 above. The concentration of residual radioactivity resulting in seventeen (17) mrem/yr TEDE is designated as the Operational DCGL(s), and has been established for the radionuclides of concern as provided in Table 2.

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SURVEY UNIT 9512-0000 RELEASE RECORD Table 2 - Radionuclide Specific Base Case Soil DCGLs, Operational DCGLs and Required Minimum Detectable Concentrations Base Case Soil Operational Required MDC Radionuclide ) DCGL DCGL (pCi/g) (2) (pCi/g) (3) (pCi/g) (4)

H-3 4.12E+02 2.80E+02 1.65E+01 C-14 5.66E+00 3.85E+00 2.26E-01 Mn-54 1.74E+01 1.18E+01 6.96E-01 Fe-55 2.74E+04 1.86E+04 1.1 OE+03 Co-60 3.81E+00 2.59E+00 1.52E-01 Ni-63 7.23E+02 4.92E+02 2.89E+01 Sr-90 1.55E+00 1.05E+00 6.20E-02 Nb-94 7.12E+00 4.84E+00 2.85E-01 Tc-99 1.26E+01 9.58E+00 5.04E-01 Ag-108m 7.14E+00 4.86E+00 2.86E-01 Cs-134 4.67E+00 3.18E+00 1.87E-01 Cs-137 7.91E+00 5.38E+00 3.16E-01 Eu-152 1.O1E+01 6.87E+00 4.04E-01 Eu-154 9.29E+00 6.32E+00 3.72E-01 Eu-155 3.92E+02 2.67E+02 1.57E+01 Pu-238 2.96E+01 2.01E+01 1.18E+00 Pu-239/240 2.67E+01 1.82E+01 1.07E+00 Pu-241 8.70E+02 5.92E+02 3.48E+01 Am-241 (5) 2.58E+O1 1.75E+01 1.03E+00 Cm-243/244 2.90E+0 1 1.97E+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 twenty-five (25) mrem/yr TEDE (3) The Operational DCGL is equivalent to seventeen (17) mrem/yr TEDE (4) The required MDC is equivalent to one (1) 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.

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SURVEY UNIT 9512-0000 RELEASE RECORD 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 2005 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, 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 ". The FSSP uses an integrated sample design that combines scanning surveys and sampling which can be either random or biased.

The DQO process determined that Cs-137 would be the radionuclide of concern in survey unit 9512-0000 (refer to Section 3). The characterization survey did not identify any HTD radionuclides of concern for this survey unit.

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.

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SURVEY UNIT 9512-0000 RELEASE RECORD 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, "Preparationof Final Status Survey Plans" to 2.69 pCi/g Cs-137 to maintain the relative shift (A/CT) 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. 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 Measurement Locations with Associated GPS Coordinates Designation Northing Easting 9512-0000-OO1F 236938.75 667501.04 9512-0000-002F 236609.40 668025.17 9512-0000-003F 237055.61 667329.83 9512-0000-004F 237282.99 667275.84 9512-0000-005F 237238.76 667268.76 9512-0000-006F 237085.20 667324.58 9512-0000-007F 237370.49 667155.29 9512-0000-009F 237222.97 667187.94 9512-0000-01OF 237124.15 667504.61 9512-0000-013F 237033.24 667448.53 Revision 0 9 Revision 0 9

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SURVEY UNIT 9512-0000 RELEASE RECORD Table 3 - (continued)

Designation Northing Easting 9512-0000-014F/FS 236957.70 667636.66 9512-0000-015F 236681.41 667973.12 9512-0000-017F/FS 236562.14 668058.53 9512-0000-018F 237153.95 667352.35 9512-0000-019F 236541.30 668115.12 The sample location designations of Table 3 are not sequentially inclusive because of the necessity to relocate three (3) of the original sample locations 9512-0000-008F/FS, 9512-0000-011F and 9512-0000-012F as they were located outside the survey unit. The initial design of the survey unit included area that was not within the property boundary. This was discovered during implementation of FSS. Addendum 1 to FSSP 9512-0000 was written to address the collection of three (3) additional samples. Sample locations 9512-0000-017F/FS, 9512-0000-018F and 9512-0000-019F were selected randomly, in accordance with the FSSP 9512-0000 Addendum 1, as determined by using Visual Sample Plan (VSP) in accordance with Procedure RPM 5.1-14, "Identifying and Marking Surface Sample Locations for Final Status Survey".

Judgmental sampling was included as a feature of this survey design to account for any anomalies identified in the field. Sample location 9512-0000-016F was selected as a judgmental location. The judgmental sample location was selected based on its proximity to an area where radioactive material previously located and removed in 1980 (PIR 80-37).

Procedure RPM 5.1-11, "Preparationof FinalStatus Survey Plans " specifies that 5% of the samples are required to be selected for HTD analysis. Two (2) soil samples or 13% were analyzed for HTDs, exceeding the required percentage. The two (2) samples that were tested were randomly selected for HTD radionuclide analyses 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.

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SURVEY UNIT 9512-0000 RELEASE RECORD The LTP specifies that scanning will be performed along with random and judgmental measurements (samples) in a Class 3 survey unit. The scanning for a Class 3 survey unit can be judgmental. Approximately 10% of this survey unit was scanned. Scanning was biased to areas where radioactive material was previously located and removed in 1980 (PIR 80-37). Table 4 provides a synopsis of the survey design.

Table 4 - Synopsis of the Survey Design ()

Feature Design Criteria Basis Based on AutoCAD-LT and Survey Unit Land Area 30,701 m2 Visual Sample Plan calculations Type 1 and Type 2 errors were 0.05, sigma was 0.147 pCi/g Cs-137 the LBGR Number of Measurements 15 was adjusted to 2.76 pCi/g Cs-137 to maintain Relative Shift in the range of 1 and 3.

Grid Spacing NA Based on random grid Operational DCGL 5.38 pCi/g Cs-137 To achieve 17 mremlyr TEDE To achieve 17 mrem/yr TEDE (').The Operational Soil Investigation Level 5.38 pCi/g Cs-137 DCGL meets the LTP Criteria for a Class 3 survey unit.

Scan Coverage Approximately 10% of the Judgmental bases area Detectable over Administratively set to Scan Investigation Level achieve 17 mrem/yr TEDE background(I (1) The allowable dose for soil in this survey unit is seventeen (17) 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.

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SURVEY UNIT 9512-0000 RELEASE RECORD 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.

Three (3) scan areas were established that constituted approximately 10% of the surface area of the Survey Unit 9512-0000. Grid lines, one meter wide, were established in each of the three (3) scan areas. Background was established at the beginning of each grid line, prior to scanning, using an Eberline E-600 with a SPA-3 sodium iodide detector, background ranged from 5,200 counts per minute (cpm) up to 8,700 cpm. The E-600 was operated in the rate-meter mode and used with the audio response. The probe was positioned as close to the ground as possible and was moved at a scan speed of about 0.5 meters per second in a serpentine pattern.

Fifteen (15) soil samples were collected for non-parametric statistical testing and packaged in accordance with Haddam Neck Plant (HNP) Procedure RPM 5.1-3, "Collection of Sample Mediafor Final Status 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 (9512-0000-003F and 9512-0000-007F) were randomly selected for HTD radionuclide analysis by the off-site laboratory.

One (1) biased soil sample, 9512-0000-016F, was 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 9512-0000-014F and 9512-0000-017F for "split sample" analysis by the off-site laboratory.

6. SURVEY RESULTS All field survey activities were conducted in October 2006.

The areas were scanned in accordance with the FSSP in October 2006. There were two areas of elevated activity identified during the scanning process of the sample measurement locations.

The fifteen (15) sample fixed measurement locations identified in the FSS plan were scanned over approximately a one (1) meter radius for elevated radiation levels. Table 5 provides an overview of the scan results for sample measurement locations.

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SURVEY UNIT 9512-0000 RELEASE RECORD Table 5 - Scan Results for Sample Measurement Locations Sample Highest Logged Action Level (1)

Measurement Reading (kcpm) > Action Level (2)

Location (kcpm) 1 5.86 7.34 NO 2 8.45 8.73 NO 3 7.19 6.33 YES 4 8.57 8.84 NO 5 9.54 10.0 NO 6 7.27 8.60 NO 7 7.50 8.86 NO 9 6.15 7.34 NO 10 6.14 6.03 YES 13 6.46 7.08 NO 14 5.50 6.28 NO 15 7.64 9.16 NO 17 8.22 8.88 NO 18 6.63 7.84 NO 19 6.71 7.44 NO (1) The action level is based on a measurement above ambient background in accordance with the FSS plan (2) FSS sample plan requires movement of the sample measurement location to the area within the 1 meter radius yielding the response above the action level. Sample locations 9512-0000-003F and 9512-0000-01 OF were moved accordingly.

The scan areas, that comprised approximately 10% of the total surface area for the survey unit, were scanned for elevated radiation levels. Table 6 provides an overview of the scan area survey. Scan results are provided in .

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SURVEY UNIT 9512-0000 RELEASE RECORD Table 6 - Scan Area Results Range of Highest Range of Action >Action Scan Logged Logged Level (1) Level )

Area Reading Reading (kcpm)

(kcpm) (kcpm) 1 6.74-8.71 8.71 8.32-9.51 NO 2 6.15-7.94 7.94 7.31-9.39 NO 3 6.00-6.77 6.77 6.82-8.14 NO (1) The action level is based on a measurement above ambient background in accordance with the FSS plan.

(2) There were no elevated readings detected in the scan areas.

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.

Cs-137 was identified in eleven (11) of the fifteen (15) samples. 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 7.

Table 7 - Summary of Soil Sample Results Cs-137 Fraction of the pCi/g Operational DCGL )

9512-0000-OOIF 2.49E-01 0.04 9512-0000-002F 1.60E-01 0.03 9512-0000-003F 3.32E-01 0.06 9512-0000-004F 3.05E-01 0.05 9512-0000-005F 6.12E-01 0.11 9512-0000-006F 3.64E-01 0.06 9512-0000-007F 5.80E-01 0.10 9512-0000-009F 2.28E-01 0.04 Revision 0 14 Revision 0 14

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SURVEY UNIT 9512-0000 RELEASE RECORD Table 7 - (continued)

Cs-137 Fraction of the pCi/g Operational DCGL )

9512-0000-01OF -2.67E-03 0.00 9512-0000-013F 4.53E-02 0.00 9512-0000-014F 6.72E-03 0.00 9512-0000-015F 1.35E-03 0.00 9512-0000-017F 6.83E-02 0.01 9512-0000-018F 1.93E-02 0.00 9512-0000-019F 3.1OE-02 0.00 (1) The Operational DCGLs from Table 2 is 5.38 pCi/g for Cs-137 to achieve seventeen (17) mrem/yr 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. HTD analysis 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.

One (1) biased sample was collected at a location 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 detectable radionuclide concentrations 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 8.

Table 8 - Biased Sample Results Cs-137 Fraction of the pCi/g Operational DCGL )

9506-0000-016F 2.28E-01 0.043 (1) The Operational DCGLs from Table 2 is 5.38 pCi/g for Cs-137 to achieve a TEDE of seventeen (17) mrem/yr.

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SURVEY UNIT 9512-0000 RELEASE RECORD

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 split results at location 9512-0000-017F/FS. The other split sample, 9512-0000-014F/FS, K-40, a natural radioisotope, was found to be present at acceptable level of agreement, therefore, the comparison was determined to be acceptable. There was no Cs-137 to compare in this sample.

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 during the implementation of FSS in this survey unit. Consequently, no investigations were required.

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 Three (3) of the systematic samples (samples 9512-0000-008F/FS, 9512-0000-011F and 9512-0000-012F) initially identified for non-parametric testing fell outside of the survey unit. The initial design of the survey unit included area that was not within the property boundary. This was discovered during the implementation of the FSSP. Three additional random samples were selected for non-parametric testing, in accordance with Addendum 1 of the FSSP. The random samples were numbered 9512-0000-017F/FS, 9512-0000-018F and 9512-0000-019F.

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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 evaluation of the sign test results demonstrates that the survey unit passes the unrestricted release criteria, thus, the null hypothesis is rejected.

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). See Table 9.

Table 9 - Basic Statistical Quantities for Cs-137 from the Final Status Survey Cs-137 I pCi/g DCGLop: 5.38E+00 Minimum Value: -2.67E-03 Maximum Value: 6.12E-01 Mean: 2.OOE-01 Median: 1.60E-01 Standard Deviation: 2.06E-01 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 (15) 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. 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.

Revision 0 17 Revision 0 17

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD The range of the data is approximately 2.98 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 0.859.

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 9512-0000 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. The Retrospective Power Curve generated using COMPASS shows adequate power was achieved. The survey unit was properly designated as Class 3.

The soil 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 dose contribution from soil is 0.50 mrem/yr TEDE based on the average concentration of the samples used for non-parametric statistical sampling.

This survey unit is affected by existing groundwater (reference CY memo ISC 06-024). The dose contribution from existing groundwater is two (2) 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, including exposures from the three (3) components as described in Section 3, 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 is 2.5 mrem/yr TEDE. Therefore, Survey Unit 9512-0000 is acceptable for unrestricted release.

Revision 0 18

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD

14. ATTACHMENTS 14.1 Attachment 1 - Figures 14.2 Attachment 2 - Scan Results 14.3 Attachment 3 - Laboratory Results 14.4 Attachment 4 - DQA Results Revision 0 19 Revision 0 19

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD ATTACHMENT 1 (FIGURES)

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1__ 0 Scan Area 2 a a Scan Area 1 Connecticut Yankee Atomic PowerCompany 9512-0000 FSS Scan Areas

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD ATTACHMENT 2 (SCAN RESULTS)

Survey Release Record Sample Location Scan Results Survey Unit 9512-0000 Sample Name Background Action Level Results Above Log Date Log Time E600 S/N Probe S/N (cOm) (CPM) (corn) AL 9512-00-SL-00-01-0 6.21 E+03 7.34E+03 5.86E+03 10/25/2006 13:30:00 1116 1006 9512-00-SL-00-02-0 7.49E+03 8.73E+03 8.45E+03 10/25/2006 13:04:00 1116 1006 9512-00-SL-00-03-0 5.29E+03 6.33E+03 7.19E+03 + 10/25/2006 13:57:00 1116 1006 9512-00-SL-00-04-0 7.60E+03 8.84E+03 8.57E+03 10/26/2006 10:03:00 1115 1001 9512-00-SL-00-05-0 8.67E+03 1.OOE+04 9.54E+03 10/26/2006 8:21:00 1114 1014 9512-00-SL-00-06-0 7.37E+03 8.60E+03 7.27E+03 10/26/2006 7:52:00 1114 1014 9512-00-SL-00-07-0 7.61 E+03 8.86E+03 7.50E+03 10/25/2006 14:52:00 1112 1013 9512-00-SL-00-09-0 6.21 E+03 7.34E+03 6.15E+03 10/26/2006 8:19:00 1115 1001 9512-00-SL-00-1 0-0 5.02E+03 6.03E+03 6.14E+03 + 10/26/2006 7:47:00 1115 1001 9512-00-SL-00-1 3-0 5.98E+03 7.08E+03 6.46E+03 10/25/2006 14:28:00 1116 1006 9512-00-SL-00-14-0 5.25E+03 6.28E+03 5.50E+03 10/26/2006 9:34:00 1115 1001 9512-00-SL-00-15-0 7.89E+03 9.16E+03 7.64E+03 10/25/2006 13:05:00 1112 1013 9512-00-SL-00-17-0 7.63E+03 8.88E+03 8.22E+03 10/25/2006 13:25:00 1112 1013 9512-00-SL-00-1 8-0 6.67E+03 7.84E+03 6.63E+03 10/26/2006 9:44:00 1114 1014 9512-00-SL-00-19-0 6.31 E+03 7.44E+03 6.71 E+03 10/25/2006 13:59:00 1112 1013 AI A -. ' - - .

Survey Release Record Scan Area Results Survey Unit 9512-0000 9512-0000 SCAN AREA 1 Background Action Level Results Above Log Date Log Time E600 SIN Probe SIN Sample Name AL (cpm) (CPM) (cpm) 9512-00-SC-01-01-0 7.67E+03 8.92E+03 7.95E+03 10/24/2006 9:51:00 1112 1013 9512-00-SC-01-02-0 7.54E+03 8.78E+03 8.12E+03 10/24/2006 9:57:00 1112 1013 9512-00-SC-01-03-0 8.17E+03 9.46E+03 7.25E+03 10/24/2006 10:00:00 1112 1013 9512-00-SC-01-04-0 7.15E+03 8.36E+03 6.88E+03 11/1/2006 7:29:00 1112 1013 9512-00-SC-01-05-0 7.12E+03 8.32E+03 7.88E+03 10/24/2006 10:08:00 1112 1013 9512-00-SC-01-06-0 7.54E+03 8.78E+03 7.84E+03 10/24/2006 10:12:00 1112 1013 9512-00-SC-01-07-0 7.23E+03 8.44E+03 6.74E+03 10/24/2006 13:30:00 1112 1013 9512-00-SC-01-08-0 7.28E+03 8.50E+03 7.27E+03 10/24/2006 13:33:00 1112 1013 9512-00-SC-01-09-0 8.15E+03 9.44E+03 8.38E+03 10/24/2006 13:37:00 1107 1003 9512-00-SC-01-10-0 8.20E+03 9.49E+03 8.71 E+03 10/24/2006 13:41:00 1107 1003 9512-00-SC-01-11-0 7.55E+03 8.79E+03 8.11 E+03 10/24/2006 13:44:00 1107 1003 9512-00-SC-01-12-0 7.39E+03 8.62E+03 6.89E+03 10/24/2006 13:47:00 1112 1013 9512-00-SC-01-13-0 8.27E+03 9.57E+03 7.54E+03 10/24/2006 13:51:00 1107 1003 9512-00-SC-01-14-0 8.22E+03 9.51 E+03 8.32E+03 10/24/2006 13:54:00 1107 1003 AI A - - - . -- -- .

Survey Release Record Scan Area Results Survey Unit 9512-0000 9512-0000 SCAN AREA 2 Background Action Level Results Above Log Date Log Time E600 S/N Probe S/N Sample Name (c.m) fCPM) AL 9512-00-SC-02-01-0 7.63E+03 8.88E+03 7.18E+03 10/24/2006 13:07:00 1107 1003 9512-00-SC-02-02-0 7.66E+03 8.91 E+03 6.77E+03 10/24/2006 13:10:00 1107 1003 9512-00-SC-02-03-0 6.61 E+03 7.77E+03 6.73E+03 10/24/2006 13:13:00 1107 1003 9512-00-SC-02-04-0 6.75E+03 7.92E+03 6.85E+03 10/24/2006 13:16:00 1107 1003 9512-00-SC-02-05-0 6.19E+03 7.31 E+03 7.02E+03 10/24/2006 13:24:00 1107 1003 9512-00-SC-02-06-0 6.86E+03 8.04E+03 6.82E+03 10/24/2006 13:27:00 1107 1003 9512-00-SC-02-07-0 6.80E+03 7.98E+03 7.68E+03 10/24/2006 13:30:00 1107 1003 9512-00-SC-02-08-0 7.30E+03 8.52E+03 6.15E+03 10/24/2006 13:33:00 1107 1003 9512-00-SC-02-09-0 6.93E+03 8.12E+03 7.79E+03 10/24/2006 13:37:00 1107 1003 9512-00-SC-02-1 0-0 8.1OE+03 9.39E+03 6.94E+03 10/24/2006 13:41:00 1107 1003 9512-00-SC-02-11-0 7.34E+03 8.56E+03 7.73E+03 10/24/2006 13:44:00 1107 1003 9512-00-SC-02-12-0 6.92E+03 8.11 E+03 7.60E+03 10/24/2006 13:47:00 1107 1003 9512-00-SC-02-13-0 7.12E+03 8.32E+03 7.44E+03 10/24/2006 13:51:00 1107 1003 9512-00-SC-02-14-0 7.20E+03 8.41 E+03 7.94E+03 10/24/2006 13:54:00 1107 1003 9512-00-SC-02-15-0 6.17E+03 7.29E+03 6.89E+03 10/24/2006 13:57:00 1107 1003 9512-00-SC-02-16-0 7.30E+03 8.52E+03 7.29E+03 10/24/2006 14:01:00 1107 1003 9512-00-SC-02-17-0 6.34E+03 7.48E+03 7.06E+03 10/24/2006 14:42:00 1107 1003 9512-00-SC-02-18-0 6.57E+03 7.73E+03 7.19E+03 10/24/2006 14:18:00 1107 1003 9512-00-SC-02-19-0 7.58E+03 8.82E+03 7.06E+03 10/24/2006 14:21:00 1107 1003 9512-00-SC-02-20-0 6.72E+03 7.89E+03 7.62E+03 10/24/2006 14:25:00 1107 1003 9512-00-SC-02-21 -0 7.09E+03 8.29E+03 7.07E+03 10/24/2006 14:30:00 1107 1003 9512-00-SC-02-22-0 6.50E+03 7.65E+03 6.98E+03 11/1/2006 7:45:00 1112 1013 9512-00-SC-02-23-0 6.43E+03 7.58E+03 7.45E+03 10/24/2006 14:38:00 1107 1003

Survey Release Record Scan Area Results Survey Unit 9512-0000 9512-0000 SCAN AREA 3 Background Action Level Results Above Log Date Log Time E600 SIN Probe SIN Sample Name (cpm) (cDm) (cpm) AL 9512-00-SC-03-01 -0 6.12E+03 7.24E+03 6.OOE+03 10/2412006 14:09:00 1112 1013 9512-00-SC-03-02-0 6.19E+03 7.31E+03 6.21E+03 10/24/2006 14:13:00 1112 1013 9512-00-SC-03-03-0 6.62E+03 7.78E+03 6.15E+03 10/24/2006 14:15:00 1112 1013 9512-00-SC-03-04-0 5.74E+03 6.82E+03 6.12E+03 10/24/2006 14:19:00 1112 1013 9512-00-SC-03-05-0 6.44E+03 7.59E+03 6.22E+03 10/24/2006 14:23:00 1112 1013 9512-00-SC-03-06-0 6.77E+03 7.94E+03 6.77E+03 10/24/2006 14:26:00 1112 1013 9512-00-SC-03-07-0 6.32E+03 7.46E+03 6.42E+03 10/24/2006 14:29:00 1112 1013 9512-00-SC-03-08-0 6.95E+03 8.14E+03 6.50E+03 10/24/2006 14:32:00 1112 1013 9512-00-SC-03-09-0 5.75E+03 6.83E+03 6.29E+03 10/24/2006 14:49:00 1112 1013

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD ATTACHMENT 3 (LABORATORY DATA)

General Narrative 1

General Narrative for Connecticut Yankee Atomic Power Co.

Work Order: 175288 SDG: MSR#06-1425 November 06,2006 Laboratory Identification:

General Engineering Laboratories, LLC 2040 Savage Road Charleston, South Carolina 29407 (843) 556-8171 Summary Sample receipt The samples arrived at General Engineering Laboratories, LLC, Charleston, South Carolina on November 01, 2006 for analysis. Shipping container temperatures were checked, documented, and within specifications. The samples were delivered with proper chain of custody documentation and signatures. All sample containers arrived without any visible signs of tampering or breakage.

Sample Identification The laboratory received the following samples:

Laboratory Sample Identification Description 175288001 9512-00-01OF 175288002 9512-00-006F 175288003 9512-00-005F 175288004 9512-00-009F 175288005 9512-00-014F 175288006 9512-00-014FS 175288007 9512-00-018F 175288008 9512-00-004F 175288009 9512-00-002F 175288010 9512-00-015F 175288011 9512-00-017F 175288012 9512-00-017FS 175288013 9512-00-O0IF 175288014 9512-00-019F 175288015 9512-00-003F 175288016 9512-00-016F 175288017 9512-00-013F 175288018 9512-00-007F Items of Note There are no items to note.

Case Narrative GENERAL ENGINEERING LABORATORIES, LLC a Member of THE GEL GROUP, INC.

P.O. BOX 30712 Charleston, SC 29417

• 2040 Savage Road (29407)

Phone (843) 556-8171 "Fax-43) 766-1178 www.get.com

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 contained in the analytical case narratives in the enclosed data package.

Analytical Request Sixteen soil samples were analyzed for FSSGAM. Two soil samples were analyzed for FSSALL.

Data Package The enclosed data package contains the following sections: General Narrative, Chain of Custody and Supporting Documentation, Data Review Qualifier Definitions, and data from the following fractions: Radiochemistry.

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.

ChPecl ones Project Manager GENERAL ENGINEERING LABORATORIES, LLC a Member of THE GEL GROUP, INC.

P.O. BOX 30712 Charleston, SC 29417

• 2040 Savage Road (29407)

Phone (843) 556-8171 Fex3a43) 786-1178 www.gel.com

List of current GEL Certifications as of 01 November 2006 State Certification Alaska UST-062 Arizona AZ0668 Arkansas 88-0651 CLIA 42D0904046 California 01151CA Colorado GenEngLabs Connecticut PH-0169 Dept. of Navy NFESC 413 EPA WG-15J Florida/NELAP E87156 Georgia E87156 (FL/NELAP)

Hawaii N/A Idaho N/A Illinois 200029 Indiana C-SC-01 Kansas E-10332 Kentucky 90129 Louisiana 03046 Maryland 270 Massachusetts M-SC012 Michigan 9903 Nevada SC12 New Jersey SC002 New Mexico FL NELAP E87156 New York 11501 North Carolina 233 North Carolina Drinking W 45709 North Dakota R-158 Oklahoma 9904 Pennsylvania 68-00485 South Carolina 10120001/10585001/10120002 Tennessee 02934 Texas TX213-2006A Texas NELAP T104704235-06-TX U.S. Dept. of Agriculture S-52597 US Army Corps of Engineer N/A Utah 8037697376 GEL Vermont VT87156 Virginia 00151 Washington C1641 4

Chain of Custody and Supporting Documentation 5

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Health Physics Procedure GPP-GGGR-R5104-003-Attachment B-CY-001 Major Connecticut Yankee Atomic Power Company Chain of Custody Form No. 2006-00643 362 Injun Hollow Road, East Hampton, CT 06424 860-267-2556 Project Name: Haddam Neck Decommissioning Analyses Requested Lab Use OOily.

Contact Name & Phone: Comments:

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:[]30 D.E)14 D.N 7 D.l 3 D. Container 7 2S /

Sample Size-Sample Designation Date Time Media Type &Type Comment, Preservation Lab Sample ID Code Code Code 9512-00-002F 10/25/06 1302 TS G BP X 512-00-015F 10/25/06 1306 TS G BP X

,9512-00-017F 10/25/06 1318 TS G BP X _ _ __ __ _ _ _._

/'9512-00-017FS 10/25/06 1318 TS G BP X - - __.____________________

-'51.2-00-00IF 10/25/06 1327 TS G BP X ...........

4'1512-00-019F 10/25/06 1400 TS G BP X

,9512-00-003F 10/25/06 1355 TS G BP X

,9512-00-016F 10/25/06 1416 TS G BP X

/9512-00-013F 10/25/06 1426 TS G BP X -.. ____.-

4512-00-007F 10/25/06 1450 TS G BP X NOTES: PO #: 002332 MSR #: 06-,*v& SSWP# NA M LTP QA E] Radwaste QA [I Non QA Samples Shipped Via: Internal Container M Fed Ex Temnp.: F7 Deg.

II1 UPS C-

[] Hand Custody. Sealed?

Y Jý-N [1

1) Relm isheo i y Date/Time 2) Received By Date/Time Cust'ody Sea]

DI Other intact?

3) R~elinquished By Date/Time 4) Received By Date/Time 7?Blr L7f2V7 9adi Y JŽN El Bill of Lading I#

Connecticut Yankee Statement of Work for Analytical Lab Services -CY-ISC-SOW-001 Figure 1. *Sample Check in List i - . io 0o Date/Time Received:

c fl.qn i- "" .

Work Order Number: -7986. 1t-"-S00-39 .

I9i55_0 -.*1,7o "

Shipping Cdntainer ID: /A5 3,3H-7 951?5/- -ihain of Custody a0000- w OLqa ,

1. Custody Seals oad shipping container intact?,.. .Yes t.zjlNo[

2. Custody Seals dated and signed? Yes'ifo[J

3. Chain-of-Custoiy record present? Yes (tJ4ooI

4. Cooler.temperature -- 0w0cg /,

5. .Vermiculite/packing materials is:* Wet []Dry 6.' Number of samples in shipping container:

7. Sample holding times exceeded? Yes [ No W

.8. Samples have:

" .t__pe _hazard labels

-- custody seals -appropriate sample labels

9. Samples are:'

_____in good condition leaking

___broken _____have air bubbles

10. Were any anomalies identified in sample receipt? Yes t] No 4-I... *Description of anomalies (include sample numbers):

Sample Custodian/Laboratory: -. - &.i f)~t~*

Dat Telephoned to: _On IIV CP41~o

Data Review Qualifier Definitions 9

Data Review Qualifier Definitions Qualifier Explanation

• A quality control analyte recovery is outside of specified acceptance criteria

• • Analyte is a surrogate compound c Result is less than value reported

> Result is greater than value reported RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank B Metals-Either presence of analyte detected in the associated blank, or MDL/IDL c sample value < PQL 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 d 5-day BOD-The 2:1 depletion requirement was not met for this sample E Organics-Concentration of the target analyte exceeds the instrument calibration range E Metals-%difference of sample and SD is >10%. Sample concentration must meet flagging criteria H Analytical holding time was exceeded h Preparation or preservation holding time was exceeded J Value is estimated N Metals-The Matrix spike sample recovery is not within specified control limits N Organics-Presumptive evidence based on mass spectral library search to make a tentative identification of the analyte (TIC). Quantitation is based on nearest internal standard response factor N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more ND Analyte concentration is not detected above the reporting limit 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 Z Paint Filter Test-Particulates passed through the filter, however no free liquids were observed.

GENERAL ENGINEERING LABORATORIES, LLC a Member of THE GEL GROUP, INC.

P.O. BOX 30712 Charleston, SC 29417 - 2040 Savage Road (29407)

Phone (843) 556-8171 , FaLJ3)766-1178 www .gel.com

RADIOLOGICAL ANALYSIS 11

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

Work Order 175288 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: 584744 Prep Batch Number: 584632 Dry Soil Prep GL-RAD-A-021 Batch Number: 584631 Sample ID Client ID 175288015 9512-00-003F 175288018 9512-00-007F 1201220201 Method Blank (MB) 1201220202 175290002(9106-0007-021F) Sample Duplicate (DUP) 1201220203 175290002(9106-0007-021F) Matrix Spike (MS) 1201220204 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.

12

Quality Control (Q0 Information:

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

Designated QC The following sample was used for QC: 175290002 (9106-0007-021F).

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 13

Product: Alphaspec Pu, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Pu-I I-RC Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 584747 Prep Batch Number: 584632 Dry Soil Prep GL-RAD-A-021 Batch Number: 584631 Sample ID Client ID 175288015 9512-00-003F 175288018 9512-00-007F 1201220218 Method Blank (MB) 1201220219 175290002(9106-0007-021F) Sample Duplicate (DUP) 1201220220 175290002(9106-0007-021F) Matrix Spike (MS) 1201220221 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.

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: 175290002 (9106-0007-021F).

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

14

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 Product: Liquid Scint Pu241, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Pu-I 1-RC Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 584751 Prep Batch Number: 584632 Dry Soil Prep GL-RAD-A-021 Batch Number: 584631 15

Sample ID Client ID 175288015 9512-00-003F 175288018 9512-00-007F 1201220222 Method Blank (MB) 1201220223 175290002(9106-0007-021F) Sample Duplicate (DUP) 1201220224 175290002(9106-0007-021F) Matrix Spike (MS) 1201220225 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.

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 volumes in this batch.

Designated QC The following sample was used for QC: 175290002 (9106-0007-021F).

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 recounted due to quench number being outside calibration range.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from 16

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,Solld-FSS GAM & ALL FSS 226 Ingrowth Waived Analytical Method: EML HASL 300, 4.5.2.3 Prep Method: Dry Soil Prep Analytical Batch Number: 585612 Prep Batch Number: 584631 Sample ID Client ID 175288001 9512-00-01OF 175288002 9512-00-006F 175288003 9512-00-005F 175288004 9512-00-009F 175288005 9512-00-014F 175288006 9512-00-014FS 175288007 9512-00-018F 175288008 9512-00-004F 175288009 9512-00-002F 175288010 9512-00-015F 175288011 9512-00-017F 175288012 9512-00-017FS 175288013 9512-00-00IF 175288014 9512-00-019F 175288015 9512-00-003F 175288016 9512-00-016F 175288017 9512-00-013F 175288018 9512-00-007F 1201222576 Method Blank (MB) 1201222577 175288001(9512-00-01 OF) Sample Duplicate (DUP) 1201222578 Laboratory Control Sample (LCS) 17

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-013 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.

Quality Control (0C) Information:

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

Designated QC The following sample was used for QC: 175288001 (9512-00-010F).

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 The sample and the duplicate, 1201222577 (9512-00-010F) and 175288001 (9512-00-010F), did not meet the relative percent difference requirement for Bi-214 and Ra-226, however they do meet the relative error ratio requirement with value of 2.12175 1.8

Oualifier information Qualifier Reason Analyte Sample U' Data rejected due to interference. Cesium- 134 175288013 175288016 Europium- 155 175288013 175288018 Manganese-54 175288013 U' Data rejected due to low abundance. Americium-241 175288017 Cesium- 134 175288001 175288003 175288004 175288005 175288008 175288009 175288010 175288011 175288012 175288014 175288015 175288017 175288018 Niobium-94 175288012 Method/Analysis Information 19

Product: GFPC, Sr90, solid - 0.025 pCi/g 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: 584652 Prep Batch Number: 584632 Dry Soil Prep GL-RAD-A-021 Batch Number: 584631 Sample ID Client ID 175288015 9512-00-003F 175288018 9512-00-007F 1201219935 Method Blank (MB) 1201219936 175288015(9512-00-003F) Sample Duplicate (DUP) 1201219937 175288015(9512-00-003F) Matrix Spike (MS) 1201219938 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 (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: 175288015 (9512-00-003F).

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

20

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 1201219935 (MB) and 175288015 (9512-00-003F) were recounted due to high MDAs.

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

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 Tc99, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Tc-02-RC Modified Analytical Batch Number: 584644 Sample ID Client ID 175288015 9512-00-003F 175288018 9512-00-007F 1201219905 Method Blank (MB) 1201219906 175288015(9512-00-003F) Sample Duplicate (DUP) 1201219907 175288015(9512-00-003F) Matrix Spike (MS) 1201219908 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 21

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.

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: 175288015 (9512-00-003F).

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.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information 22

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: 584650 Prep Batch Number: 584632 Dry Soil Prep GL-RAD-A-021 Batch Number: 584631 Sample ID Client ID 175288015 9512-00-003F 175288018 9512-00-007F 1201219928 Method Blank (MB) 1201219929 175288015(9512-00-003F) Sample Duplicate (DUP) 1201219930 175288015(9512-00-003F) Matrix Spike (MS) 1201219931 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 (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: 175288015 (9512-00-003F).

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

23

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: 584649 Prep Batch Number: 584632 Dry Soil Prep GL-RAD-A-021 Batch Number: 584631 Sample ID Client ID 175288015 9512-00-003F 175288018 9512-00-007F 1201219924 Method Blank (MB) 1201219925 175288015(9512-00-003F) Sample Duplicate (DUP) 1201219926 175288015(9512-00-003F) Matrix Spike (MS) 1201219927 Laboratory Control Sample (LCS) 24

SOPReference 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 (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: 175288015 (9512-00-003F).

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.

25

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: LSC, Tritium Dist, Solid - 3 pCi/g Analytical Method: EPA 906.0 Modified Analytical Batch Number: 585989 Sample ED Client ID 175288015 9512-00-003F 175288018 9512-00-007F 1201223381 Method Blank (MB) 1201223382 175288015(9512-00-003F) Sample Duplicate (DUP) 1201223383 175288015(9512-00-003F) Matrix Spike (MS) 1201223384 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# 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.

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: 175288015 (9512-00-003F).

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

26

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 1201223381 (MB), 175288015 (9512-00-003F) and 175288018 (9512-00-007F) were reprepped due to high relative percent difference/relative error ratio.

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 380628 was generated due to Container scanning event for custody missed. 1. The analyst did not scan the samples 175288 015,018, 175290 002 into the batch prior to analysis, however the samples did remain in their custody at all times. 1. The error has been corrected and the analyst has been instructed on the proper scanning procedures.

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

Oualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint C14, Solid Ali,FSS Analytical Method: EPA EERF C-01 Modified Analytical Batch Number: 584648 Sample ID Client ID 175288015 9512-00-003F 175288018 9512-00-007F 1201219920 Method Blank (MB) 1201219921 175288018(9512-00-007F) Sample Duplicate (DUP) 1201219922 175288018(9512-00-007F) Matrix Spike (MS) 1201219923 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General 27

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.

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 volumes in this batch.

Designated QC The following sample was used for QC: 175288018 (9512-00-007F).

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 Sample 1201219920 (MB) was recounted due to the quench number being outside the calibration range. Samples 1201219922 (9512-00-007F) and 1201219923 (LCS) were recounted due to analyst 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.

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

Qualifier information Manual qualifiers were not required.

28

Certification Statement Where the analytical method has been performed under NELAP certification, the analysis has met all 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: Y F 29

General Engineering Laboratories NCR Report No.: 380628 Form GEL-NCR Revision No.: 1 Rev. 06/05 COMPANY - WIDE NONCONFORMANCE REPORT Mo.Day Yr. Division: Quality Criteria: Type:

08-NOV-06 Radiochemistry Specifications Process Instrument Type: Test/ Method: Matrix Type: Client Code:

LSC EPA 906.0 Modified Solid YANK Batch ID: Sample Numbers:

585989 See Below Potentially affected work order(s)(SDG): 175288(MSR#06-1425),175290(MSR#06-1310)

Application Issues:

Container scanning event for custody missed Specification and Requirements NRG Disposition:

Nonconformance

Description:

1. The analyst did not scan the samples 175288 015,018, 175290 002 1. The error has been corrected and the analyst has been instructed on the into the batch prior to analysis, however the samples did remain in their proper scanning procedures.

custody at all times.

Originator's Name: Data Validator/Group Leader:

Amy Scott 08-NOV-06 Heather Anderson 08-NOV-06 Quality Review:

Director:

Page 1 30

SAMPLE DATA

SUMMARY

31

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#06-1425 GEL Work Order: 175288 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, MIDA, or LOD.

UI 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 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-O0OF Project: YANK01204 Sample ID: 175288001 ClientID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 26-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 4.27%

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 0.673 +/-0.128 0.0504 +/-0.128 0.107 pCilg MJH1 11/03/062024 585612 1 Americium-241 U -0.0211 +/-0.0623 0.0509 +/-0.0623 0.105 pCi/g Bismuth-212 0.426 +/-0.192 0.0882 +/-0.192 0.188 pCi/g Bismuth-214 0.404 +/-0.0624 0.0258 +/-0.0624 0.0543 pCi/g Cesium-134 UI 0.00 +/-0.0215 0.0172 +/-0.0215 0.0361 pCi/g Cesium-137 U -0.00276 +/-0.016 0.0134 +/-0.016 0.0283 pCi/g Cobalt-60 U -0.0111 +/-0.016 0.0127 +/-0.016 0.0277 pCi/g Europium-152 U 0.0027 +/-0.0421 0.0362 +/-0.0421 0.0756 pCi/g Europium-154 U -0.022 +/-0.0486 0.0402 +/-0.0486 0.0864 pCi/g Europium-t55 U 0.0578 +/-0.0544 0.0387 +/-0.0544 0.0801 pCi/g Lead-212 0.612 +/-0.0489 0.0203 +/-0.0489 0.0422 pCilg Lead-214 0.558 +/-0.0655 0.0245 +/-0.0655 0.0513 pCi/g Manganese-54 U 0.0218 +/-0.0214 0.0135 +/-0.0214 0.0285 pCi/g Niobium-94 U -0.0128 +/-0.0147 0.0116 +/-0.0147 0.0246 pCi/g Potassium-40 9.85 +/-0.594 0.111 +/-0.594 0.244 pCi/g Radium-226 0.404 +/-0.0624 0.0258 +/-0.0624 0.0543 pCi/g Silver-108m U 0.000905 +/-0.0131 0.0116 +/-0.0131 0.0244 pCi/g Thallium-208 0.185 +/-0.0323 0.0124 +/-0.0323 0.0263 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 LXM2 11/01/06 1051 584631 The following Analytical Methods were performed Method Description EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defi'ed as follows:

• A quality control analyte recovery is outside of specified acceptance criteria

< Result is less than value reported 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-OlOF Project: YANK01204 SamplelD: 175288001 ClientID: YANK00I Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MI)A 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.

34

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-006F Project: YANK01204 Sample ID: 175288002 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 26-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 24.6%

Parameter Qualifier Result Ui icertainty 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 0.915 +/-0.271 0.0966 +/-0.271 0.193 pCi/g MJH1 11/03/062046 585612 1 Americium-241 U 0.0533 k/-0.0445 0.0354 +/-0.0445 0.0707 pCi/g Bismuth-212 0.670 +/-0.364 0.226 +/-0.364 0.451 pCi/g Bismuth-214 0.524 +/-0.153 0.0528 +/-0.153 0.106 pCi/g Cesium-134 U 0.0467 +/-0.0329 0.0313 +/-0.0329 0.0626 pCi/g Cesium-137 0.364 +/-0.0846 0.0291 +/-0.0846 0.0581 pCi/g Cobalt-60 U 0.00 +/-0.0377 0.0311 +/-0.00 0.0622 pCi/g Europium-152 U 0.0321 +1-0.105 0.0633 +/-0.105 0.127 pCi/g Europium-154 U 0.0589 +1-0.116 0.102 +/-0.116 0.204 pCi/g Europium-155 U 0.0473 +/-0.0831 0.0546 +/-0.0831 0.109 pCi/g Lead-212 0.766 F/-0.0996 0.035 +/-0.0996 0.070 pCi/g Lead-214 0.600 +/-0.120 0.0459 +/-0.120 0.0917 pCi/g Manganese-54 U 0.0276 +/-0.0311 0.0287 +/-0.0311 0.0573 pCi/g Niobium-94 U -0.00446 V/-0.0303 0.0257 +/-0.0303 0.0513 pCi/g Potassium-40 12.6 +/-1.33 0.191 +/-1.33 0.382 pCilg Radium-226 0.524 +/-0.153 0.0528 +/-0.153 0.106 pCi/g Silver-108m U 0.0164 +/-0.0309 0.0238 +/-0.0309 0.0475 pCi/g Thallium-208 0.235 +/-0.0798 0.0264 +/-0.0798 0.0527 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 LXM2 11/01/06 1138 584631 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 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-006F Project: YANK01204 Sample ID: 175288002 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.

36

GENERAL ENGINEERING LABORATORIES, LLC

...2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Ana1v~is Certificateof A alvsis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-005F Proeect: YANK01204 Sample ID: 175288003 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 26-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 26.4%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Garnma,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 1.21 +/-0.195 0.0648 +/-0.195 0.140 pCilg MJH1 11/04/060751 585612 1 Americium-241 U -0.0785 +/-0.133 0.0938 +/-0.133 0.194 pCi/g Bismuth-212 0.930 +/-0.273 0.164 +/-0.273 0.347 pCi/g Bismuth-214 0.882 +/-0.127 0.0371 +/-0.127 0.0784 pCi/g Cesium- 134 UI 0.00 +/-0.0379 0.0274 +/-0.0379 0.0578 pCi/g Cesium-137 0.612 +/-0.0717 0.0195 +/-0.0717 0.0415 pCi/g Cobalt-60 U 0.00618 +/-0.0255 0.0217 +/-0.0255 0.0474 pCi/g Europium-152 U 0.00712 +/-0.0693 0.0559 +/-0.0693 0.116 pCi/g Europium-154 U 0.0308 +/-0.0795 0.0684 +/-0.0795 0.148 pCi/g Europium- 155 U 0.0598 +/-0.0661 0.0581 +/-0.0661 0.120 pCi/g Lead-212 1.25 +/-0.0782 0.0299 +/-0.0782 0.062 pCi/g Lead-214 0.951 +/-0.119 0.040 +/-0.119 0.0833 pCilg Manganese-54 U -0.0195 +/-0.025 0.0189 +/-0.025 0.0404 pCi/g Niobium-94 U 0.0142 +/-0.0243 0.0208 +/-0.0243 0.0437 pCi/g Potassium-40 12.5 +/-1.02 0.180 +/-1.02 0.400 pCi/g Radium-226 0.882 +/-0.127 0.0371 +/-0.127 0.0784 pCi/g Silver-108m U 0.0241 +/-0.0216 0.0194 +/-0.0216 0.0407 pCilg Thallium-208 0.404 +/-0.0686 0.0189 +/-0.0686 0.0401 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 LXM2 11/01/06 1139 584631 The following Analytical Methods were performed Method Description 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 mwww.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-005F Proiect: YANK01204 Sample ID: 175288003 Client ID: YANK00I 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 Ana1v~is !

A .

Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-009F Project: YANK01204 Sample ID: 175288004 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 26-OCT-06 Receive Date: 01 -NOV-06 Collector: Client Moisture: 15.7%

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 0.672 +/-0.111 0.0369 +/-0.111 0.0781 pCi/g MJHI 11/04/060802 585612 1 Americium-241 U -0.0211 +/-0.0808 0.0644 +/-0.0808 0.133 pCi/g Bismuth-212 0.524 +/-*0.157 0.0851 +/-0.157 0.179 pCi/g Bismuth-214 0.458 +/-0.0641 0.0204 +/-0.0641 0.0427 pCi/g Cesium- 134 UI 0.00 +/-0.0241 0.0147 +/-0.0241 0.0307 pCi/g Cesium-137 0.228 +/-0.0275 0.0113 +/-0.0275 0.0237 pCi/g Cobalt-60 U 0.00973 +/-0.013 0.0119 +/-0.013 0.0254 pCi/g Europium-152 U -0.013 +/-0.0342 0.0304 +/-0.0342 0.0631 pCi/g Europium-154 U -0.0326 +/-0.0458 0.0316 +/-0.0458 0.0675 pCi/g Europium-155 U 0.0373 +/-0.052 0.0374 +/-0.052 0.077 pCi/g Lead-212 0.688 +/-0.041 0.0189 +/-0.041 0.0389 pCi/g Lead-214 0.534 +/-0.0555 0.0212 +/-0.0555 0.044 pCi/g Manganese-54 U -0.00843 +/-0.0128 0.0107 +/-0.0128 0.0225 pCi/g Niobium-94 U 0.00866 +/-0.0116 0.0105 +/-0.0116 0.0219 pCi/g Potassium-40 13.1 +/-0.606 0.0891 +/-0.606 0.194 pCi/g Radium-226 0.458 +/-0.0641 0.0204 +/-0.0641 0.0427 pCi/g Silver-108m U 0.00168 +/-0.0107 0.00953 +/-0.0107 0.0199 pCi/g Thallium-208 0.234 +/-0.0333 0.0102 +/-0.0333 0.0214 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 LXM2 11/01/06 1139 584631 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 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-009F Project: YANK01204 Sample ID: 175288004 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MIDA 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.

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-014F Project: YANK01204 Sample ID: 175288005 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 26-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 4.95%

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 0.574 +/-0.0992 0.0351 +/-0.0992 0.0744 pCi/g MJH1 11/04/060803 585612 1 Americium-241 U 0.0388 +/-0.0487 0.0424 +/-0.0487 0.0871 pCi/g Bismuth-212 0.346 +/-0.159 0.0826 +/-0.159 0.174 pCi/g Bismuth-214 0.322 +/-0.0534 0.0191 +/-0.0534 0.0401 pCi/g Cesium-134 U1 0.00 +/-0.0199 0.013 +/-0.0199 0.0272 pCi/g Cesium-137 U 0.00672 +/-0.0144 0.0111 +/-0.0144 0.0232 pCi/g Cobalt-60 U 0.0118 +/-0.0133 0.0122 +/-0.0133 0.0259 pCi/g Europium-152 U -0.0376 +/-0.0384 0.0271 +/-0.0384 0.0563 pCi/g Europium-154 U -0.0156 +/-0.0337 0.0278 +/-0.0337 0.060 pCi/g Europium-155 U 0.00184 +/-0.0371 0.0334 +/-0.0371 0.0687 pCi/g Lead-212 0.493 +/-0.0391 0.0165 +/-0.0391 0.0341 pCi/g Lead-214 0.440 +/-0.0553 0.0181 +/-0.0553 0.0377 pCi/g Manganese-54 U 0.00801 +/-0.0124 0.0109 +/-0.0124 0.023 pCi/g Niobium-94 U 0.00139 +/-0.0136 0.0101 +/-0.0136 0.0211 pCi/g Potassium-40 9.59 +/-0.499 0.081 +/-0.499 0.178 pCi/g Radium-226 0.322 +/-0.0534 0.0191 +/-0.0534 0.0401 pCi/g Silver-108m U 0.00384 +/-0.0109 0.00993 +/-0.0109 0.0207 pCi/g Thallium-208 0.158 +/-0.0241 0.00948 +/-0.0241 0.020 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 LXM2 11/01/06 1139 584631 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 41

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-014F Project: YANK01204 Sample ID: 175288005 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.

42

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of A alysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-014FS Proiect: YANK01204 Sample ID: 175288006 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 26-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 4.92%

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 0.548 +/-0.140 0.0573 +/-0.140 0.115 pCi/g MJHI 11/04/06 0841 585612 1 Americium-241 U 0.0172 +/-0.0255 0.0219 +/-0.0255 0.0438 pCi/g Bismuth-212 0.290 +/-0.249 0.134 +/-0.249 0.267 pCi/g Bismuth-214 0.415 +1-0.0831 0.0322 +/-0.0831 0.0644 pCi/g Cesium-134 U 0.0222 +/-0.0248 0.0211 +/-0.0248 0.0421 pCi/g Cesium-137 U -0.00913 +/-0.0187 0.0162 +/-0.0187 0.0324 pCi/g Cobalt-60 U 0.00689 +/-0.0218 0.0191 +/-0.0218 0.0382 pCi/g Europium-152 U 0.00464 +/-0.0577 0.0399 +/-0.0577 0.0798 pCi/g Europium-154 U -0.0215 +/-0.0621 0.0506 +/-0.0621 0.101 pCi/g Europium-155 U 0.0204 +/-0.0444 0.0366 +1-0.0444 0.0731 pCi/g Lead-212 0.565 +/-0.0656 0.0208 +/-0.0656 0.0415 pCi/g Lead-214 0.432 +/-0.0747 0.0274 +/-0.0747 0.0547 pCi/g Manganese-54 U 0.0264 +/-0.0259 0.0188 +/-0.0259 0.0375 pCi/g Niobium-94 U 0.00349 +/-0.0164 0.0149 +/-0.0164 0.0297 pCi/g Potassium-40 8.96 +/-0.787 0.155 +/-0.787 0.310 pCi/g Radium-226 0.415 +/-0.0831 0.0322 +/-0.0831 0.0644 pCi/g Silver-108m U -0.00508 +/-0.0153 0.0134 +/-0.0153 0.0267 pCi/g Thallium-208 0.201 +/-0.0358 0.0157 +/-0.0358 0.0313 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 LXM2 11/01/06 1139 584631 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-014FS Project: YANK01204 Sample ID: 175288006 Client ID: YANKOO1 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 3 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-018F Proiect: YANK01204 Sample ID: 175288007 Client ID: YANKOO I Matrix: TS Vol. Recv.:

Collect Date: 26-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 8.19%

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 0.484 +/-0.0824 0.0319 +/-0.0824 0.0673 pCi/g MJHI 11/04/06 1605 585612 1 Americium-241 U 0.00423 +/-0.0134 0.0109 +/-0.0134 0.0224 pCi/g Bismuth-212 0.328 +1-0.114 0.0628 +/-0.114 0.132 pCilg Bismuth-214 0.292 +/-0.0497 0.0165 +/-0.0497 0.0345 pCi/g Cesium-134 U 0.0157 +/-0.0156 0.0112 +/-0.0156 0.0233 pCi/g Cesium-137 U 0.0193 +/-0.0159 0.0104 +/-0.0159 0.0217 pCi/g Cobalt-60 U 0.00702 +/-0.0104 0.00925 +/-0.0104 0.0199 pCi/g Europium-152 U 0.0066 +/-0.026 0.0223 +/-0.026 0.0461 pCi/g Europium-154 U -0.0155 +/-0.0353 0.0287 +/-0.0353 0.0611 pCi/g Europium-155 U 0.0126 +/-0.0269 0.0187 +/-0.0269 0.0384 pCi/g Lead-212 0.466 +/-0.0291 0.0115 +/-0.0291 0&0237 pCi/g Lead-214 0.353 +/-0.0422 0.0155 +/-0.0422 0.0321 pCi/g Manganese-54 U 0.00584 +/-0.0109 0.00935 +/-0.0109 0.0196 pCi/g Niobium-94 U -0.00465 +/-0.0104 0.00858 +/-0.0104 0.0179 pCi/g Potassium-40 6.79 +/-0.462 0.0878 +/-0.462 0.190 pCi/g Radium-226 0.292 +/-0.0497 0.0165 +/-0.0497 0.0345 pCi/g Silver-108m U 0.00177 +/-0.00833 0.00749 +/-0.00833 0.0156 pCi/g Thallium-208 0.158 +/-0.0244 0.00877 +/-0.0244 0.0183 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 LXM2 11/01/06 1139 584631 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-018F Project: YANK01204 Sample ID: 175288007 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.

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-004F Proiect: YAN'K01204 Sample ID: 175288008 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 26-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 16.8%

Parameter Qualifier Result U ncertainty 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 1.34 +/-0.206 0.0397 +/-0.206 0.0838 pCi/g MJH1 11/04/06 1605 585612 1 Americiurn-241 U -0.0019 +/-0.0476 0.0388 +/-0.0476 0.0792 pCilg Bismuth-212 0.754 +/-0.263 0.0908 +/-0.263 0.190 pCi/g Bismuth-214 0.900 +/-0.113 0.0222 +/-0.113 0.0462 pCi/g Cesium-134 UI 0.00 +/-0.0319 0.0177 +/-0.0319 0.0367 pCi/g Cesium-137 0.305 +/-0.045 0.013 +/-0.045 0.0272 pCi/g Cobalt-60 U 0.00202 +/-0.0149 0.0127 +/-0.0149 0.0271 pCi/g Europium-152 U -0.00971 +/-0.0425 0.0308 +/-0.0425 0.0637 pCi/g Europium-154 U -0.0109 +/-0.0434 0.0361 +/-0.0434 0.0768 pCi/g Europium-155 U 0.058 +/-0.0507 0.0323 +/-0.0507 0.066 pCi/g Lead-212 1.28 +/-0.108 0.0175 +/-0.108 0.036 pCi/g Lead-214 1.02 +/-0.109 0.0229 +/-0.109 0.0473 pCi/g Manganese-54 U 0.0179 +/-0.0139 0.0128 +/-0.0139 0.0267 pCilg Niobium-94 U -0.00509 +/-0.0137 0.0113 +/-0.0137 0.0235 pCi/g Potassium-40 11.7 +/-0.962 0.106 +/-0.962 0.228 pCi/g Radium-226 0.900 +/-0.113 0.0222 +/-0.113 0.0462 pCi/g Silver-108m U 0.0111 +/-0.0134 0.0113 +/-0.0134 0.0233 pCilg Thallium-208 0.400 +/-0.0497 0.0127 +/-0.0497 0.0265 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 LXM2 11101/06 1139 584631 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 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-004F Project: YANK01204 Sample ID: 175288008 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 MIDC 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 hI 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-002F Project: YANK01204 Sample ID: 175288009 Client ID: YANKO00 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01-NOV-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 0.714 +/-0.117 0.034 +/-0.117 0.068 pCi/g MJH1 11/04/06 1606 585612 1 Americium-241 U 0.0428 +/-0.0428 0.0341 +/-0.0428 0.0682 pCi/g Bismuth-212 0.407 +/-0.165 0.0717 +/-0.165 0.143 pCi/g Bismuth-214 0.524 +/-0.0653 0.0183 +/-0.0653 0.0366 pCi/g Cesium-134 UI 0.00 +/-0.0194 0.0124 +/-0.0194 0.0248 pCi/g Cesium-137 0.160 +/-0.0231 0.0094 +/-0.0231 0.0188 pCi/g Cobalt-60 U 0.00335 +/-0.0118 0.0101 +/-0.0118 0.0201 pCi/g Europium-152 U -0.0286 +/-0.0364 0.0253 +/-0.0364 0.0506 pCi/g Europium-154 U -0.0204 +/-0.0401 0.0328 +/-0.0401 0.0655 pCi/g Europium-155 U-0.000292 +/-0.0323 0.0291 +/-0.0323 0.0581 pCi/g Lead-212 0.726 +/-0.0665 0.0155 +/-0.0665 0.031 pCi/g Lead-214 0.590 +/-0.0686 0.0187 +/-0.0686 0.0373 pCi/g Manganese-54 U 0.0164 +/-0.0131 0.00889 +/-0.0131 0.0178 pCi/g Niobium-94 U 0.0178 +/-0.0136 0.00959 +/-0.0136 0.0192 pCi/g Potassium-40 12.3 +/-0.878 0.0933 +/-0.878 0.187 pCi/g Radium-226 0.524 +/-0.0653 0.0183 +/-0.0653 0.0366 pCi/g Silver-108m U -0.00466 +/-0.0102 0.00874 +/-0.0102 0.0175 pCi/g Thallium-208 0.233 +/-0.0296 0.00847 +/-0.0296 0.0169 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 LXM2 11/01/06 1142 584631 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 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-002F Project: YANK01204 Sample ID: 175288009 Client ID: YANK01I 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.

50

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - wwWlgel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-015F Proiect: YANK01204 Sample ID: 175288010 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 4.07%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Ganima,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.648 +/-0.123 0.0441 +/-0.123 0.0881 pCi/g MJHI 11/04/06 1607 585612 1 Amnericium-241 U 0.0285 +/-0.0227 0.0178 +/-0.0227 0.0357 pCi/g Bismuth-212 0.555 +/-0.233 0.0954 +/-0.233 0.191 pCilg Bismuth-214 0.519 +/-0.075 0.0224 +/-0.075 0.0448 pCi/g Cesium-134 UI 0.00 +/-0.0236 0.0159 +/-0.0236 0.0317 pCi/g Cesium-137 U 0.00135 +/-0.0228 0.0129 +/-0.0228 0.0258 pCi/g Cobalt-60 U 0.0192 +/-0.0153 0.015 +/-0.0153 0.030 pCilg Europium-152 U -0.0294 +/-0.0417 0.0292 +/-0.0417 0.0584 pCi/g Europium- 154 U -0.0206 +/-0.0484 0.0395 +/-0.0484 0.079 pCi/g Europium-!55 U 0.0289 +/-0.0296 0.0272 +/-0.0296 0.0544 pCi/g Lead-212 0.604 +1-0.0622 0.0155 +/-0.0622 0.0309 pCi/g Lead-214 0.590 +/-0.0744 0.0212 +/-0.0744 0.0423 pCi/g Manganese-54 U 0.00387 +/-0.0147 0.013 +/-0.0147 0.0261 pCi/g Niobium-94 U -0.00016 +/-0.0128 0.0113 +/-0.0128 0.0226 pCi/g Potassium-40 11.3 +/-0.698 0.113 +/-0.698 0.225 pCi/g Radium-226 0.519 +/-0.075 0.0224 +/-0.075 0.0448 pCi/g Silver-108m U -0.00216 +/-0.012 0.0105 +/-0.012 0.0209 pCi/g Thallium-208 0.181 +/-0.0348 0.011 +/-0.0348 0.022 pCilg The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LXM2 11/01/06 1142 584631 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 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-015F Proiect: YANK01204 Sample ID: 175288010 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.

52

GENERAL ENGINEERING LABORATORIES, LLC

.. 2040 Savage Road Charleston SC 29407- (843) 556-8171 - WWW.gel.com Certificate of Analysis Certificate ofA alv-ds Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-017F Project: YANK01204 Sample ID: 175288011 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 8.78%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.637 +/-0.0927 0.0338 +/-0.0927 0.0712 pCi/g MJHI 11/04/06 1707 585612 1 Americium-241 U 0.0363 +1-0.0597 0.0497 +/-0.0597 0.102 pCi/g Bismuth-212 0.345 +1-0.157 0.0718 +/-0.157 0.151 pCi/g Bismuth-214 0.552 +1-0.059 0.0176 +/-0.059 0.0368 pCi/g Cesium-134 UI 0.00 +/-0.0249 0.0127 +/-0.0249 0.0264 pCi/g Cesium-137 0.0683 +/-0.0317 0.00905 +/-0.0317 0.019 pCi/g Cobalt-60 U 0.0105 +/-0.0114 0.0104 +/-0.0114 0.0222 pCi/g Europium-152 U -0.0167 +/-0.0298 0.0248 +/-0.0298 0.0514 pCi/g Europium-154 U -0.0147 +/-0.0387 0.032 +/-0.0387 0.0679 pCi/g Europium-155 U 0.0182 +/-0.031 0.0295 +/-0.031 0.0603 pCi/g Lead-212 0.693 +/-0.0359 0.0152 +/-0.0359 0.0312 pCi/g Lead-214 0.571 +/-0.0501 0.0188 +/-0.0501 0.0388 pCi/g Manganese-54 U 0.00321 +/-0.0119 0.0102 +/-0.0119 0.0214 pCi/g Niobium-94 U 0.00106 +/-0.0104 0.00894 +/-0.0104 0.0187 pCi/g Potassium-40 9.24 +/-0.531 0.0969 +/-0.531 0.208 pCi/g Radium-226 0.552 +/-0.059 0.0176 +/-0,059 0.0368 pCi/g Silver-108m U 0.00406 +/-0.00958 0.00876 +/-0.00958 0.0182 pCi/g Thallium-208 0.232 +/-0.0264 0.0103 +/-0.0264 0.0215 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 LXM2 11/01/06 1142 584631 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-017F Project: YANK01204 Sample ID: 175288011 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.gelcom Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-017FS Proiect: YANK01204 Sample ID: 175288012 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 8.88%

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 0.672 +/-0.0996 0.0298 +/-0.0996 0.0629 pCi/g MJHI 11/04/06 1713 585612 1 Americium-241 U 0.0487 +/-0.0683 0.0572 +/-0.0683 0.117 pCi/g Bismuth-212 0.409 +/-0.197 0.067 +/-0.197 0.141 pCi/g Bismuth-214 0.467 +/-0.0453 0.0177 +/-0.0453 0.0369 pCi/g Cesium- 134 UI 0.00 +/-0.0203 0.0121 +/-0.0203 0.0251 pCi/g Cesium-137 0.0598 +/-0.0169 0.00891 +/-0.0169 0.0186 pCi/g Cobalt-60 U -0.00244 +/-0.0115 0.00958 +/-0.0115 0.0205 pCi/g Europium-152 U -0.0213 +/-0.0289 0.0239 +/-0.0289 0.0495 pCi/g Europium- 154 U 0.005 +/-0.0363 0.0311 +/-0.0363 0.0658 pCi/g Europium- 155 U 0.0565 +/-0.0307 0.0303 +/-0.0307 0.0618 pCi/g Lead-212 0.621 +/-0.0347 0.015 +/-0.0347 0.0307 pCi/g Lead-214 0.584 +/-0.0495 0.0167 +/-0.0495 0.0345 pCi/g Manganese-54 U 0.0038 +/-0.0114 0.00976 +/-0.0114 0.0204 pCi/g Niobium-94 UI 0.00 +/-0.0194 0.00897 +/-0.0194 0.0187 pCi/g Potassium-40 9.75 +/-0.476 0.0863 +/-0.476 0.186 pCi/g Radium-226 0.467 +/-0.0453 0.0177 +/-0.0453 0.0369 pCi/g Silver-108m U 0.00457 +/-0.00891 0.00821 +/-0.00891 0.017 pCi/g Thallium-208 0.223 +/-0.0269 0.00873 +/-0.0269 0.0182 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 LXM2 11/01/06 1142 584631 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-017FS Project: YANK01204 Sample ID: 175288012 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.

56

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-001F Proiect: YANK01204 Sample ID: 175288013 Client ID: YANKO01 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 27.4%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSSGAM &ALL FSS 226 Ingrowth Waived Actinium-228 1.02 +/-0.143 0.0415 +/-0.143 0.0878 pCi/g MJH1 11/04/06 1714 585612 1 Americium-241 U -0.00964 +/-0.020 0.0178 +/-0.020 0.0362 pCi/g Bismuth-212 0.674 +/-0.209 0.103 +/-0.209 0.215 pCi/g Bismuth-214 0.614 +/-0.0673 0.0233 +/-0.0673 0.0484 pCi/g Cesium-134 UI 0.00 +/-0.0252 0.0138 +/-0.0252 0.0289 pCilg Cesium-137 0.249 +/-0.0328 0.0138 +/-0.0328 0.0287 pCilgc Cobalt-60 U -0.00252 +/-0.0172 0.0143 +/-0.0172 0.0304 pCilg Europium-152 U 0.0166 +/-0.0362 0.0324 +/-0.0362 0.0669 pCilg Europium-154 U -0.0165 +/-0.0558 0.0397 +/-0.0558 0.0843 pCilg Europium-155 U! 0.00 +/-0.0478 0.0302 +/-0.0478 0.0617 pCilg Lead-212 0.972 +/-0.0491 0.0191 +/-0.0491 0.0392 pCi/g Lead-214 0.701 +/-0.0716 0.0225 +/-0.0716 0.0465 pCi/g Manganese-54 UI 0.00 +/-0.0296 0.0126 +/-0.0296 0.0263 pCi/g Niobium-94 U 0.000854 +/-0.014 0.0118 +/-0.014 0.0246 pCi/g Potassium-40 14.1 +/-0.681 0.0987 +/-0.681 0.216 pCilg Radium-226 0.614 +/-0.0673 0.0233 +/-0.0673 0.0484 pCilg Silver-108m U -0.00305 +/-0.0134 0.0115 +/-0.0134 0.0238 pCi/g Thallium-208 0.292 +/-0.039 0.0127 +/-0.039 0.0265 pCilg The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LXM2 11/01/06 1142 584631 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-O0IF Proiect: YANK01204 Sample ID: 175288013 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.

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-019F Project: YANK01204 Sample ID: 175288014 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 4.65%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamnnia,Solid-FSSGAM &ALL FSS 226 Ingrowth Waived Actinium-228 0.558 +/-0.0973 0.035 +/-0.0973 0.0737 pCi/g MJH1 11/04/06 1714 585612 1 Americium-241 U -0.00653 +/-0.0518 0.0424 +/-0.0518 0.0868 pCi/g Bismuth-212 0.417 +/-0.177 0.0721 +/-0.177 0.152 pCi/g Bismuth-214 0.439 +/-0.0517 0.0171 +/-0.0517 0.0357 pCi/g Cesium-134 UI 0.00 +/-0.0208 0.0137 +/-0.0208 0.0284 pCi/g Cesium-137 0.031 +/-0.0196 0.0106 +/-0.0196 0.0221 pCi/g Cobalt-60 U 0.0179 +/-0.0116 0.0113 +/-0.0116 0.024 pCi/g Europium-152 U -0.0274 +/-0.032 0.0268 +/-0.032 0.0554 pCi/g Europium-154 U 0.0352 +/-0.0372 0.0343 +/-0.0372 0.0726 pCi/g Europium-155 U 0.0338 +/-0.0291 0.0286 +/-0.0291 0.0584 pCi/g Lead-212 0.494 +/-0.034 0.0157 +/-0.034 0.0323 pCi/g Lead-214 0.496 +/-0.0538 0.0188 +/-0.0538 0.0389 pCi/g Manganese-54 U 0.00994 +/-0.0113 0.0102 +/-0.0113 0.0214 pCi/g Niobium-94 U 0.00576 +/-0.0102 0.00921 +/-0.0102 0.0192 pCi/g Potassium-40 8.61 +/-0.520 0.0983 +/-0.520 0.211 pCi/g Radium-226 0.439 +/-0.0517 0.0171 +/-0.0517 0.0357 pCi/g Silver-108m U -0.00993 +/-0.0104 0.00835 +/-0.0104 0.0174 pCi/g Thallium-208 0.182 +/-0.0251 0.00978 +/-0.0251 0.0204 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 LXM2 11/01/06 1142 584631 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 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-019F Project: YANK01204 Sample ID: 175288014 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-003F Project: YANK01204 Sample ID: 175288015 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 17.4%

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 0.135 +/-0.254 0.180 +/-0.255 0.457 pCi/g MXA 11/03/06 0749 584744 1 1

Curium-242 U 0.003 +/-0.115 0.0951 +/-0.115 0.292 pCi/g Curium-243/244 U -0.0893 +/-0.166 0.168 +/-0.167 0.433 pCi/g Alphaspec Pu, Solid-ALL FSS Plutonium-238 U 0.0468 +/-0.0877 0.039 +/-0.0878 0.161 pCi/g MXA 11/03/06 0749 584747 2 1

Plutonium-239/240 U 0.108 +/-0.122 0.039 +/-0.123 0.161 pCi/g Liquid Scint Pu241, Solid-ALL FSS Plutonium-241 U 0.00 +/-9.14 7.67 +/-9.14 16.1 pCi/g MXA 11/07/06 1001 584751 3 1

Rad Gamma Spec Analysis Gamma,Solid-FSS GAM &ALL FSS 226 Ingrowth Waived Actinium-228 0.877 +/-0.0946 0.0335 +/-0.0946 0.0703 pCi/g MJH1 11/04/06 1710 585612 5 Americium-241 U 0.00132 +/-0.0467 0.0438 +/-0.0467 0.0893 pCi/g Bismuth-212 0.430 +/-0.154 0.0749 +/-0.154 0.156 pCi/g Bismuth-214 0.469 +/-0.0605 0.0173 +/-0.0605 0.036 pCi/g Cesium-134 UI 0.00 +/-0.0199 0.0131 +/-0.0199 0.0272 pCi/g Cesium-137 0.332 +/-0.0314 0.0102 +/-0.0314 0.0213 pCilg Cobalt-60 U -0.00483 +/-0.0122 0.00987 +/-0.0122 0.021 pCi/g Europium-152 U 0.0384 +/-0.0286 0.0268 +/-0.0286 0.0552 pCi/g Europium-154 U -0.0308 +/-0.0369 0.0293 +/-0.0369 0.062 pCilg Europium-155 U 0.0286 +/-0.0319 0.0296 +/-0.0319 0.0603 pCilg Lead-212 0.712 +/-0.0372 0.0154 +/-0.0372 0.0315 pCi/g Lead-214 0.567 +/-0.0539 0.0179 +/-0.0539 0.0369 pCi/g Manganese-54 U 0.000228 +/-0.0115 0.0101 +/-0.0115 0.0211 pCi/g Niobium-94 U-0.000419 +/-0.0106 0.00894 +/-0.0106 0.0186 pCi/g Potassium-40 11.9 +/-0.554 0.0783 +/-0.554 0.169 pCi/g Radium-226 0.469 +/-0.0605 0.0173 +/-0.0605 0.036 pCi/g Silver-108m U 0.00798 +/-0.0104 0.00942 +/-0.0104 0.0194 pCi/g Thallium-208 0.211 +/-0.0282 0.00958 +/-0.0282 0.0199 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr90, solid - 0.025 pCi/g Strontium-90 0.0264 +/-0.0119 0.00695 +/-0.0119 0.016 pCi/g KSDI 11/07/06 1103 584652 6 Rad Liquid Scintillation Analysis 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-003F Project: YANK01204 Sample ID: 175288015 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Liquid Scintillation Analysis LSC, Tritiun Dist, Solid - 3 pCi/g Tritium U 0.178 +/-0.744 0.613 +/-0.744 1.32 pCi/g DFA1 11/07/06 1718 585989 7 Liquid Scint C14, Solid All, FSS Carbon-14 U -0.0691 +/-0.122 0.104 +/-0.122 0.212 pCi/g AXD2 11/03/060413 584648 10 Liquid Scint Fe55, Solid-ALL FSS Iron-55 U -20.5 +/-52.3 39.0 +/-52.3 81.5 pCilg MXP1 11/03/06 1512 584650 11 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 U -1.75 +/-9.40 7.95 +/-9.40 16.5 pCi/g MXPI 11/06/06 1230 584649 12 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U 0.0477 +/-0.270 0.225 +/-0.270 0.465 pCi/g KXR1 11/06/06 0714 584644 13 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LXM2 11/01/06 1142 584631 The following Analytical Methods were performed Method Description 1 DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Pu- 11-RC Modified 3 DOE EML HASL-300, Pu-1 1-RC Modified 4 DOE EML HASL-300, Pu- lI -RC Modified 5 EML HASL 300, 4.5.2.3 6 EPA 905.0 Modified 7 EPA 906.0 Modified 8 EPA 906.0 Modified 9 EPA 906.0 Modified 10 EPA EERF C-01 Modified 11 DOE RESL Fe-1, Modified 12 DOE RESL Ni-i, Modified 13 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Americium-243 Alphaspec Am24 1,Cm, Solid ALL 87 (15%-125%)

Plutonium-242 Alphaspec Pu, Solid-ALL FSS 94 (15%-125%)

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-003F Proiect: YANKO1204 Sample ID: 175288015 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Plutonium-241 Liquid Scint Pu241, Solid-ALL Fý 82 (25%-125%)

Strontium-90 GFPC, Sr9O, solid - 0.025 pCi/g 72 (25%-125%)

Carrier/Tracer Recovery GFPC, Sr9O, solid - 0.025 pCi/g 72 (25%-125%)

Iron-55 Liquid Scint Fe55, Solid-ALL FS 67 (15%-125%)

Nickel-63 Liquid Scint Ni63, Solid-ALL FS 88 (25%-125%)

Carrier/Tracer Recovery Liquid Scint Ni63, Solid-ALL FS 88 (25%-125%)

Technetium-99 Liquid Scint Tc99, Solid-ALL FS 75 (15%-125%)

Carrier/Tracer Recovery Liquid Scint Tc99, Solid-ALL FS 75 (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.

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-016F Project: YANK01204 Sample ID: 175288016 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01 -NOV-06 Collector: Client Moisture: 28.8%

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 Actiniumn-228 0.848 +/-0.148 0,040 +/-0.148 0.0839 pCi/g MJHI 11/04/06 1710 585612 1 Americium-241 U 0.00581 +/-0.112 0.087 +/-0.112 0.177 pCi/g Bismuth-212 0.505 +/-0.185 0.0874 +/-0.185 0.182 pCi/g Bismuth-214 0.597 +/-0.0838 0.0219 +/-0.0838 0.0455 pCi/g Cesium-134 UI 0.00 +/-0.0238 0.0124 +/-0.0238 0.026 pCi/g Cesium-137 0.228 +/-0.0392 0.0125 +/-0.0392 0.026 pCi/g Cobalt-60 U 0.009 +/-0.0148 0.0131 +/-0.0148 0.0278 pCi/g Europium-152 U -0.00605 +/-0.0368 0.0312 +/-0.0368 0.0642 pCilg Europium-154 U 0.00481 +/-0.0504 0.0376 +/-0.0504 0.0795 pCi/g Europium-155 U 0.0755 +/-0.0433 0.038 +/-0.0433 0.0774 pCi/g Lead-212 0.856 +/-0.0816 0.0173 +/-0.0816 0.0354 pCi/g Lead-214 0.640 +/-0.0811 0.022 +/-0.0811 0.0454 pCilg Manganese-54 U 0.0185 +/-0.0136 0.0122 +/-0.0136 0.0255 pCi/g Niobium-94 U 0.000615 +/-0.0132 0.0113 +/-0.0132 0.0235 pCi/g Potassium-40 13.2 +/-1.04 0.110 +/-1.04 0.235 pCi/g Radium-226 0.597 +/-0.0838 0.0219 +/-0.0838 0.0455 pCi/g Silver-108m U -0.0114 +/-0.0128 0.0103 +/-0.0128 0.0213 pCi/g Thallium-208 0.274 +/-0.0402 0.0116 +/-0.0402 0.0241 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 LXM2 11/01/06 1142 584631 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 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-016F Project: YANK01204 Sample ID: 175288016 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.

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample 1D: 9512-00-013F Project: YANK01204 Sample ID: 175288017 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 15.3%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Ganrna,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.634 +/-0.105 0.0288 +/-0.105 0.0603 pCi/g MJHI 11/04/06 1711 585612 1 Americium-241 UI 0.00 +/-0.0386 0.0334 +/-0.0386 0.0677 pCi/g Bismuth-212 0.416 +/-0.178 0.0647 +/-0.178 0.135 pCi/g Bismuth-214 0.557 +/-0.0681 0.0171 +/-0.0681 0.0352 pCilg Cesium-134 UI 0.00 +/-0.021 0.0119 +/-0.021 0.0246 pCi/g Cesium-137 0.0453 +/-0.0174 0.00989 +1-0.0174 0.0205 pCi/g Cobalt-60 U -0.00114 +/-0.0101 0.00858 +/-0.0101 0.0182 pCilg Europium-152 U -0.0134 +/-0.031 0.024 +/-0.031 0.0493 pCi/g Europium-154 U -0.0275 +/-0.0331 0.0271 +/-0.0331 0.057 pCi/g Europium-155 U 0.0266 +/-0.0305 0.0286 +1-0.0305 0.0581 pCi/g Lead-212 0.699 +/-0.0634 0.0145 +/-0.0634 0.0297 pCilg Lead-214 0.630 +/-0.0699 0.017 +/-0.0699 0.0349 pCilg Manganese-54 U 0.00909 +/-0.00907 0.00842 +/-0.00907 0.0176 pCi/g Niobium-94 U 0.00367 +/-0.00968 0.00852 +/-0.00968 0.0176 pCi/g Potassium-40 10.7 +/-0.747 0.0657 +/-0.747 0.142 pCi/g Radium-226 0.557 +/-0.0681 0.0171 +/-0.0681 0.0352 pCi/g Silver-108m U 0.0029 +/-0.011 0.00823 +/-0.011 0.017 pCi/g Thallium-208 0.225 +/-0.0299 0.00864 +/-0.0299 0.0179 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 LXM2 11/01/06 1142 584631 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 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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-013F Project: YANK01204 Sample ID: 175288017 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MEDA 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.

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-007F Project: YANK01204 Sample ID: 175288018 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-OCT-06 Receive Date: 01-NOV-06 Collector: Client Moisture: 31.7%

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 -0.134 +/-0.0868 0.108 +/-0.0873 0.308 pCi/g MXA 11/03/06 0749 584744 1 1

Curium-242 U -0.0418 +/-0.0367 0.0699 +/-0.037 0.234 pCi/g Curium-243/244 U -0.0174 +1-0.165 0.144 +/-0.165 0.379 pCi/g Alphaspec Pu, Solid-ALL FSS Plutonium-238 U -0.0136 +/-0.0588 0.0361 +/-0.0589 0.149 pCi/g MXA 11/03/06 0749 584747 2 1

Plutonium-239/240 U 0.0148 +/-0.0588 0.0361 +/-0.0588 0.149 pCi/g Liquid Scint Pu241, Solid-ALL FSS Plutonium-241 U -3.43 +/-7.18 6.18 +/-7.18 13.0 pCi/g MXA 11/07/06 1017 584751 3 1

Rad Gamma Spec Analysis GammaSolid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 1.03 +/-0.171 0.0591 +/-0.171 0.123 pCilg MJ-H1 11/04/06 1715 585612 5 Americium-241 U 0.00711 +/-0.0259 0.0222 +/-0.0259 0.0451 pCi/g Bismuth-212 1.10 +/-0.290 0.127 +/-0.290 0.263 pCilg Bismuth-214 0.656 +/-0.0915 0.0298 +/-0.0915 0.0616 pCi/g Cesium-134 UI 0.00 +/-0.0383 0.0213 +/-0.0383 0.044 pCi/g Cesium-137 0.580 +/-0.0449 0.0169 +/-0.0449 0.0349 pCi/g Cobalt-60 U 0.00358 +/-0.0191 0.0161 +/-0.0191 0.034 pCi/g Europium-152 U -0.0382 +/-0.0492 0.0398 +/-0.0492 0.0817 pCi/g Europium-154 U 0.0107 +/-0.0607 0.0511 +/-0.0607 0.107 pCi/g Europium-155 UI 0.00 +/-0.0715 0.0327 +/-0.0715 0.0667 pCi/g Lead-212 0.947 +/-0.0525 0.0211 +/-0.0525 0.0431 pCi/g Lead-214 0.742 +/-0.0742 0.0302 +/-0.0742 0.062 pCi/g Manganese-54 U 0.0184 +/-0.0269 0.0168 +/-0.0269 0.0348 pCi/g Niobium-94 U 0.00423 +/-0.0179 0.0151 +/-0.0179 0.0313 pCi/g Potassium--40 15.9 +/-0.780 0.152 +/-0.780 0.323 pCi/g Radium-226 0.656 +/-0.0915 0.0298 +/-0.0915 0.0616 pCi/g Silver-I08m U 0.00366 +/-0.016 0.0141 +/-0.016 0.029 pCi/g Thallium-208 0.301 +/-0.0484 0.0165 +/-0.0484 0.034 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr90, solid - 0.025 pCi/g Strontium-90 0.0356 +/-0.0191 0.011 +/-0.0192 0.0263 pCi/g KSD1 11/03/06 1524 584652 6 Rad Liquid Scintillation Analysis 68

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-007F Proiect: YANK01204 Sample ID: 175288018 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MIDA Units DF Analyst Date Time Batch Mtd Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid - 3 pCi/g Tritium U -0.529 +/-0.760 0.673 +/-0.760 1.44 pCilg DFAI 11/07/06 1820 585989 7 Liquid Scint C14, Solid All,FSS Carbon-14 U -0.013 +/-0.127 0.106 +/-0.127 0.217 pCilg AXD2 11/03/06 0505 584648 10 Liquid Scint Fe55, Solid-ALL FSS Iron-55 U 6.40 +/-37.7 27.4 +/-37.7 57.4 pCilg MXPI 11/03/06 1529 584650 11 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 U 2.37 +/-10.5 8.72 +/-10.5 18.1 pCi/g MXP1 11/06/06 1246 584649 12 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U 0.0522 +/-0,267 0.223 +/-0.267 0.460 pCi/g KXR1 11/06/060731 584644 13 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LXM2 11/01/06 1142 584631 The following Analytical Methods were performed Method Description 1 DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Pu-11-RC Modified 3 DOE EML HASL-300, Pu-i 1-RC Modified 4 DOE EMI HASL-300, Pu- 11-RC Modified 5 EML HASL 300, 4.5.2.3 6 EPA 905.0 Modified 7 EPA 906.0 Modified 8 EPA 906.0 Modified 9 EPA 906.0 Modified 10 EPA EERF C-01 Modified 11 DOE RESL Fe-1, Modified 12 DOE RESL Ni-i, Modified 13 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Recovery% Acceptable Limits Arnericium-243 Alphaspec Am241, Cm, Solid ALL 80 (15%-125%)

Plutonium-242 Alphaspec Pu, Solid-ALL FSS 96 (15%-125%)

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: November 8, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9512-00-007F Project: YANK01204 Sample ID: 175288018 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Plutonium-241 Liquid Scint Pu241. Solid-ALL F5 102 (25%-125%)

Strontium-90 GFPC, Sr90, solid - 0.025 pCi/g 89 (25%-125%)

Carrier/Tracer Recovery GFPC, Sr90, solid - 0.025 pCi/g 89 (25%-125%)

Iron-55 Liquid Scint Fe55, Solid-ALL FS 72 (15%-125%)

Nickel-63 Liquid Scint Ni63, Solid-ALL FS 87 (25%-125%)

Carrier/Tracer Recovery Liquid Scint Ni63, Solid-ALL FS 87 (25%-125%)

Technetium-99 Liquid Scint Tc99, Solid-ALL FS 75 (15%-125%)

Carrier/Tracer Recovery Liquid Scint Tc99, Solid-ALL FS 75 (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.

70

QUALITY CONTROL DATA 71

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 - www.gel.com QC Summary Report Date: November 8,2006 Client: Connecticut Yankee Atomic Power Page 1 of 9 362 Injun Hollow Rd East Hampton, Connecticut

Contact:

Mr. Jack McCarthy Workorder: 175288 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Alpha Spec Batch 584744 QC1201220202 175290002 DUP Americium-241 U 0.0491 U -0.037 pCi/g 1420 (0% -100%) 4XA1 11/03/06 07:49 Uncert: +/-0.185 +/-0.122 TPU: +/-0.185 +/-0.122 Curium-242 U 0.134 U -0.0189 pCi/g 266 (0% -100%)

Uncert: +/-0.303 +/-0.159 TPU: +/-0.303 +/-0.159 Curium-243/244 U 0.224 U -0.0959 pCilg 499 (0%-100%)

Uncert: +/-0.307 +/-0.292 TPU: +/-0.308 +/-0.292 QC1201220204 LCS Americium-241 13.5 14.2 pCi/g 105 (75%-125%)

Uncert: +/-1.38 TPU: +/-2.23 Curium-242 U -0.0168 pCi/g Uncert: +/-0.0725 TPU: +/-0.0725 Curium-243/244 16.3 17.1 pCi/g 105 (75%-125%)

Uncert: +/-1.52 TPU: +/-2.60 QC1201220201 MB Americium-241 U -0.0992 pCi/g Uncert: +/-0.126 TPU: +/-0.127 Curium-242 U 0.056 pCi/g Uncert: +/-0.126 TPU: +/-0.127 Curium-243/244 U 0.00871 pCi/g Uncert: +/-0.212 TPU: +/-0.212 QC 1201220203 175290002 MS Americium-241 13.6 U 0.0491 12.8 pCi/g 94 (75%-125%)

Uncert: +/-0.185 +/-1.38 TPU: +/-0.185 +/-2.13 Curium-242 U 0.134 U 0.0501 pCi/g Uncert: +/-0.303 +/-0.133 TPU: +/-0.303 +/-0.133 Curium-243/244 16.6 U 0.224 16.8 pci/g 101 (75%-125%)

Uncert: +/-0.307 +/-1.58 TPU: +/-0.308 +/-2.65 Batch 584747 QC1201220219 175290002 DUP Plutonium-238 U 0.00833 U 0.00 pCig 200 (0% - 100%) AXA1 11/03/06 07:49 72

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 -.(843) 556-8.171 - www.gel.corn QC Summary Workorder: 175288 Page 2 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Alpha Spec Batch 584747 Uncert: +/-0.0631 +/-0.0586 TPU: +/-0.0631 +/-0.0586 Phutonium-239/240 U 0.038 U 0.00955 pCi/g 120 (0% - 100%)

Uncert: +/-0.0857 +/-0.0907 TPU: +/-0.0857 +/-0.0907 QC1201220221 1.CS Plutonium-238 U 0.178 PCi/g (75%-125%) 11/03/06 07:49 Uncert: +/-0.266 TPU: +/-0.267 Plutonium-239/240 12.5 13.7 PCi/g 110 (75%-125%)

Uncert: +/-1.54 TPU: +/-2.21 QC1201220218 MB Plutonium-238 U -0.00987 PCi/g 11/03/06 07:49 Uncert: +/-0.0829 TPU: +/-0.083 Plutonium-239/240 U -0.00987 PCi/g Uncert: +1-0.0829 TPU: +/-0.083 QC1201220220 175290002 MS Plutonium-238 u 0.00833 0.289 PCi/g (75%-125%)

Uncert: +/-0.0631 +/-0.200 TPU: +/-0.0631 +/-0.203 Plutonium-239/240 12.6 U 0.038 11.0 PCi/g 87 (75%-125%)

Uncert: - +/-0.0857 +/-1.20 TPU: +/-0.0857 +/-1.66 Batch 584751 QC1201220223 175290002 DUP Plutonium-241 u 3.26 U -2.83 pCi/g 0 (0% - 100%) VXA1 11/07/06 11:06 Uncert: +/-8.75 +/-7.80 TPU: +/-8.76 +/-7.80 QC1201220225 LCS Plutonium-241 143 142 PCi/g 99 (75%-125%) 11/07/06 11:39 Uncert: +/-19.1 TPU: +/-25.7 QC1201220222 MB Plutonium-241 U -4.48 PCi/g 11/07/06 10:50 Uncert: +/-8.90 TPU: +/-8.90 QC1201220224 175290002 MS Plutonium-241 146 ,U 3.26 128 PCi/g 88 (75%-125%) 11/07/06 11:22 Uncert: +/-8.75 +/-13.8 TPU: +/-8.76 +/-19.2 Rad Gamma Spec Batch 585612 QC1201222577 175288001 DUP Actinium-228 0.673 0.647 pCi/g 4 (0%- 100%) MJH1 11/04/06 17:06 Uncert: +/-0.128 +/-0.109

+/-0.109 73

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 294.07 -1(843) 556-8171 - www.gel.corn QC Summary Workorder: 175288 Page 3 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 585612 TPU: +/-0.128 Aniericium-241 u -0.0211 U 0.00554 pCilg 342 (0% - 100%)

Uncert: +/-0.0623 +/-0.0527 TPU: +/-0.0623 +/-0.0527 Bismuth-2 12 0.426 0.416 pCi/g 3 (0%- 100%)

Uncert: +/-0.192 +/-0.179 TPU: +/-0.192 +/-0.179 Bismuth-214 0.404 0.505 pCilg 22 (0% - 100%)

Uncert: +/-0.0624 +/-0.0702 TPU: +/-0.0624 +/-0.0702 Cesium-134 UI 0.00 U 0.0113 pCi/g 130 (0%- 100%)

Uncert: +/-0.0215 +/-0.0236 TPU: +/-0.0215 +/-0.0236 Cesium-137 U -0.00276 U 0.00161 pCi/g 759 (0% - 100%)

Uncert: +/-0.016 +/-0.0123 TPU: +/-0.016 +/-0.0123 Cobalt-60 U -0.0111 U 0.0135 pCi/g 2090 (0%- 100%)

Uncert: +/-0.016 +/-0.0139 TPU: +/-0.016 +/-0.0139 Europium-152 U 0.0027 U -0.00261 pCi/g 200 (0%- 100%)

Uncert: +/-0.0421 +/-0.0404 TPU: +/-0.0421 +/-0.0404 Europium- 154 U -0.022 U 0.00369 pCi/g 280 (0%- 100%)

Uncert: +/-0.0486 +/-0.0366 TPU: +/-0.0486 +/-0.0366 Europium-155 U 0.0578 U 0.0297 pCi/g 64 (0%- 100%)

Uncert: +/-0.0544 +/-0.0451 TPU: +/-0.0544 +/-0.0451 Lead-212 0.612 0.675 pClg 10 (0% - 20%)

Uncert: +/-0.0489 +/-0.0666 TPU: +/-0.0489 +/-0.0666 Lead-214 0.558 0.560 pCi/g 0 (0% - 20%)

Uncert: +/-0.0655 +/-0.0698 TPU: +/-0.0655 +/-0.0698 Manganese-54 U 0.0218 U -0.000765 pCilg 200 (0%- 100%)

Uncert: +/-0.0214 +/-0.0125 TPU: +/-0.0214 +/-0.0125 Niobium-94 U -0.0128 U -0.00673 pCilg 200 (0%- 100%)

Uncert: +/-0.0147 +/-0.0114 TPU: +/-0.0147 +/-0.0114 Potassium-40 9.85 9.06 pCi/g 8 (0%-20%)

Uncert: +/-0.594 +/-0.729 TPU: +/-0.594 +/-0.729 Radium-226 0.404 0.505 pCi/g 22 (0% - 100%)

Uncert: +/-0.0624 +/-0.0702 TPU: +/-0.0624 +/-0.0702 Silver-lO8m U 0.000905 U -0.00715 pCilg 200 (0%- 100%)

Uncert: +/-0.0131 +/-0.011 74

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn QC Summary Workorder: 175288 Page 4 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range AnIst Date Timi e Rad Gamma Spec Batch 585612 TPU: +/-0.0131 +/-0.011 Thallium-208 0.185 0.181 pCi/g 2 (0% - 100%)

Uncert: +/-0.0323 +/-0.0328 TPU: +/-0.0323 +/-0.0328 QC1201222578 LCS Actinium-228 U 0.115 pci/g 11/04/06 17:06 Uncert: +/-0.248 TPU: +/-0.248 Americium-24 I 23.4 24.3 104 (75%-125%)

Uncert: +/-0.234 TPU: +/-0.234 Bismuth-212 U 0.0978 Uncert: +/-0.365 TPU: +/-0.365 Bismuth-214 U 0.0897 pCi/g Uncert: +/-0.0917 TPU: +/-0.0917 Cesium- 134 U -0.00517 pCi/g Uncert: +/-0.0559 TPU: +/-0.0559 Cesium-137 9.54 10.5 110 (75%-125%)

Uncert: +/-0.187 TPU: +/-0.187 Cobalt-60 14.2 15.2 pCi/g 107 (75%-125%)

Uncert: +/-0.250 TPU: +/-0.250 Europium-152 U -0.0164 Uncert: +/-0.0974 TPU: +/-0.0974 Europium- 154 U -0.0205 pCi/g Uncert: +/-0.102 TPU: +/-0.102 Europium-1 55 U -0.0362 pCi/g Uncert: +/-0.0824 TPU: +/-0.0824 Lead-212 U 0.0045 pCi/g Uncert: +/-0.0684 TPU: +/-0.0684 Lead-214 U 0.000938 Uncert: +/-0.0721 TPU: +/-0.0721 Manganese-54 U -0.00555 pCi/g Uncert: +/-0.0507 TPU: +/-0.0507 Niobium-94 U -0.0445 Uncert: +/-0.0419 pCi/g TPU: +/-0.0419 Potassium-40 U 0.455 75

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www gel.corm QC Summary Workorder: 175288 Page 5 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 585612 Uncert: +/-0.363 TPU: +/-0.363 Radium-226 U 0.0897 pCilg (75%-125%)

Uncert: +/-0.0917 TPU: +/-0.0917 Silver-108m U -0.00252 pCi/g Uncert: +/-0.0399 TPU: +/-0.0399 Thallium-208 U 0.0196 pCi/g Uncert: +/-0.0446 TPU: +/-0.0446 QC1201222576 MB Actinium-228 U 0.0232 pCilg 11/04106 17:06 Uncert: +/-0.0382 TPU: +/-0.0382 Americium-241 U 0.0133 pCi/g Uncert: +/-0.0331 TPU: +/-0.0331 B3ismuth-212 U 0.0153 pCi/g Uncert: +/-0.0386 TPU: +/-0.0386 B3ismutLh-214 U 0.00701 pCi/g Uncert: +/-0.0311 TPU: +/-0.0311 Cesium-134 U -0.00104 pCilg Uncert: +/-0.00572 TPU: +/-0.00572 Cesium-137 U 0.00215 pCi/g Uncert: +/-0.00537 TPU: +/-0.00537 Cobalt-60 U -0.00015 pCi/g Uncert: +/-0.00538 TPU: +/-0.00538 Europium- 152 U 0.0175 pCi/g Uncert: +/-0.0136 TPU: +/-0.0136 Europium- 154 U 0.00143 pCi/g Uncert: +/-0.0168 TPU: +/-0.0168 Europium-1 55 U 0.00185 pCi/g Uncert: +/-0.0153 TPU: +/-0.0153 L~ead-212 U 0.00297 pCi/g Uncert: +/-0.0137 TPU: +/-0.0137 Lead-214 U 0.0159 pCi/g Uncert: +/-0.021 TPU: +/-0.021 76

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.comr QC Summary Workorder: 175288 Page 6 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range AnIst Date Time Rad Gamma Spec Batch 585612 Manganese-54 U 0.00475 pCi/g Uncert: +/-0.00931 TPU: +/-0.00931 Niobium-94 U 0.000918 pCi/g Uncert: +1-0.005 TPU: +1-0.005 Potassium-40 U 0.0596 pCi/g Uncert: +/-0.131 TPU: +/-0.131 Radium-226 U 0.00701 pCi/g Uncert: +1-0.0311 TPU: +/-0.0311 Silver-108m U -2.OOOE-05 pCi/g Uncert: +/-0.00452 TPU: +/-0.00452 Thallium-208 U 0.008 pCi/g Uncert: +/-0.0102 TPU: +/-0.0102 Rad Gas Flow Batch 584652 QC1201219936 175288015 DUP Strontium-90 0.0264 0.0609 pCilg 79* (0%- 100%) KSDI 11/03/06 15:25 Uncert: +/-0.0119 +/-0.0184 TPU: +/-0.0119 +/-0.0185 QC1201219938 LCS Strontium-90 1.18 1.05 pCi/g 89 (75%-125%) 11/03/06 16:37 Uncert: +/-0.107 TPU: +/-0.110 QC1201219935 MB Stiontium-90 U 0.00653 pCi/g 11/07/06 11:03 Uncert: +/-0.00814 TPU: +/-0.00814 QC1201219937 175288015 MS Strontium-90 2.20 0.0264 1.71 pCilg 77 (75%-125%) 11/03/06 15:44 Uncert: +/-0.0119 +/-0.188 TPU: +/-0.0119 +/-0.192 Rad Liquid Scintillation Batch 584644 QC1201219906 175288015 DUP Technetium-99 U 0.0477 U -0.0932 pCi/g 0 (0% - 100%) KXR1 11/06/06 08:20 Uncert: +/-0.270 +/-0.255 TPU: +/-0.270 +/-0.255 QC1201219908 LCS Technetium-99 13.0 12.2 pCi/g 94 (75%-125%) 11/06/06 08:53 Uncert: +/-0.489 TPU: +/-0.576 QC1201219905 MIB Technetium-99 U -0.00874 pCi/g 11/06/06 08:03 77

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary AXI r I-A-0 1 17C') QQ

.... Page 7 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Liquid Scintillation Batch 584644 Uncert: +/-0.231 TPU: +/-0.231 QC1201219907 175288015 MS Technetium-99 13.0 U 0.0477 12.2 pCi/g 93 (75%-125%) 11/06/06 08:36 Uncert: +/-0.270 +/-0.513 TPU: +/-0.270 +/-0.596 Batch 584648 QC1201219921 175288018 DUP Carbon-14 U -0.013 U -0.0381 pCi/g 0 (0% - 100%) kXD2 11/03/06 08:12 Uncert: +/-0.127 +/-0.119 TPU: +/-0.127 +/-0.119 QC1201219923 LCS Carbon-14 6.74 6.38 pCi/g 95 (75%-125%) 11/03/06 09:27 Uncert: +/-0.376 TPU: +/-0.389

" QC1201219920 MB Carbon-14 U 0.0531 pCi/g 11/06/06 10:43 Uncert: +/-0.108 TPU: +/-0.108 QC1201219922 175288018 MS Carbon-14 6.99 U -0.013 6.34 pCilg 91 (75%-125%) 11/03/06 09:03 Uncert: +/-0.127 +/-0.319 TPU: +/-0.127 +/-0.334 Batch 584649 QC1201219925 175288015 DUP Nickel-63 U -1.75 U 5.23 pCi/g 0 (0% - 100%) V4XP1 11/06/06 13:35 Uncert: +/-9.40 +/-9.62 TPU: +/-9.40 +/-9.62 QC1201219927 LCS Nickel-63 508 417 pCi/g 82 (75%-125%) 11/06/06 14:08 Uncert: +/-19.6 TPU: +/-24.3 QC1201219924 MB Nickel-63 U 3.97 pCi/g 11/06/06 13:19 Uncert: +/-9.36 TPU: +/-9.36 QC1201219926 175288015 MS Nickel-63 562 U -1.75 432 pCi/g 77 (75%-125%) 11/06/06 13:51 Uncert: +/-9.40 +/-20.1 TPU: +/-9.40 +/-25.4 Batch 584650 QC1201219929 175288015 DUP Iron-55 U -20.5 U -20 pCi/g 0 (0% - 100%) VIXPI 11/03/06 16:18 Uncert: +/-52.3 +/-32.0 TPU: +/-52.3 +/-32.0 QC1201219931 LCS Iron-55 587 573 pCi/g 98 (75%-125%) 11/03/06 16:51 Uncert: +/-46.4 TPU: +/-64.1 78

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 175288 Page 8 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Liquid Scintillation Batch 584650 QC1201219928 MB Iron-55 U -11.8 pCi/g 11/03/06 16:02 Uncert: +/-27.9 TPU: +/-27.9 QC1201219930 175288015 MS Iron-55 632 U -20.5 610 pCi/g 97 (75%-125%) 11/03/06 16:34 Uncert: +/-52.3 +/-54.5 TPU: +/-52.3 +/-74.9 Batch 585989 QC1201223382 175288015 DUP Tritium U 0.178 U -0.159 pCi/g 0 (0% - 100%) DFA1 11/07/06 21:28 Uncert: +/-0.744 +/-0.801 TPU: +/-0.744 +/-0.801 QC1201223384 LCS Tritium 20.2 18.5 pCi/g 92 (75%-125%) 11/07/06 22:48 Uncert: +/-3.05 TPU: +/-3.06 QC1201223381 MB Tritium U 0.326 pCi/g 11/07/06 20:25 Uncert: +/-0.728 TPU: +/-0.728 QC1201223383 175288015 MS Tritium 21.2 U 0.178 17.3 pCi/g 82 (75%-125%) 11/07/06 22:30 Uncert: +/-0.744 +/-3.22 TPU: +/-0.744 +/-3.23 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: 175288 Page 9 of 9 Parmnane NOM Sample Qual QC Units RPD% REC% Range AnIst Date Time A

h Preparation or preservation holding time was exceeded N/A indicates that spike recovery limits do not apply when sample concentration exceeds spike conc. 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

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD ATTACHMENT 4 (DQA RESULTS)

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD ATTACHMENT 4A (PRELIMINARY DATA REVIEW)

Health Physics Procedure GPP-GGGR-R512 1-001 Attachment B, Rev. CY-00 1 MAJOR Health Physics Procedure GPP-GGGR-R5121-001 Attachment B, Rev. CY-001 MAJOR Preliminary Data Review Form - Samples for the Sign Test Survey Unit: 9512- 0000 Survey Unit Name: Northwest Site Grounds Classification: 3 Survey Media: Soil Type of Survey: Final Status Survey Type of Measurement: Radionuclide Specific Number of Measurements: 15 Operational DCGL (pCi/g) 5.38E+00 BASIC STATISTICAL QUANTITIES Cs-137 Minimum Value: -2.67E-03 Maximum Value: 6.12E-01 Mean: 2.OOE-01 Median: 1.60E-01 Standard Deviation: 2.06E-01 RADIONUCLIDE CONCENTRATION (pCi/g)

NUMBER Cs-137 Identified?

9512-0000-OOIF 2.49E-01 Y 9512-0000-002F 1.60E-01 N 9512-0000-003F 3.32E-01 Y 9512-0000-004F 3.05E-01 Y 9512-0000-005F 6.12E-01 Y 9512-0000-006F 3.64E-01 Y 9512-0000-007F 5.80E-01 Y 9512-0000-009F 2.28E-01 Y 9512-0000-01OF -2.67E-03 Y 9512-0000-013F 4.53E-02 N 9512-0000-014F 6.72E-03 Y 9512-0000-015F 1.35E-03 Y 9512-0000-017F 6.83E-02 Y 9512-0000-018F 1.93E-02 N 9512-0000-019F 3.1 OE-02 N Performed By: Date: ,.1-Independent Review: ---- /4 e Date: 21//1)7

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD ATTACHMENT 4B (GRAPHICAL REPRESENTATION OF DATA)

. Health Physics Procedure GGGR-R5123-Rev.CY-001 Attachment C Health Physics Procedure GGGR-R5123-Rev.CY-OO1 Attachment C Quantile Plot For Cesium - 137 Survey Unit: 9512-0000 Survey Unit Name: Northwest Site Grounds Mean: 2.OOE-01 pCi/g 7.OOE-01 6.OOE-Q1 --

S5.OQE-O1 4.OOE-O1 ~-

0

=tv 3.00E-01--------------

2.OOE-01 -! L-----------

0 1.OOE-O1-- - - - - - - - - - - - -

O.OOE+O0 .

-i.OOE-O1 - 2-0 T 4ec 6, 8O Percentage Cs-1 37 Rank Percentage

-2.67E-03 1 3 %

1.35E-03 2 10%

6.72E-03 3 17 %

1.93E-02 4 23 %

4.53E-02 5 30 %

6.83E-02 6 37 %

1.60E-01 7 43 %

2.28E-01 8 50 %

2.28E-01 9 57 %

2.49E-01 10 63 %

3.05E-01 11 70 %

3.32E-01 12 77 %

3.64E-01 13 83 %

5.80E-01 14 90 %

6.12E-01 15 97 %

Prepared By: , *( / Date: ,/'4/49 Reviewed By: .5 Date: Date:- -n_?

Health Physics Procedure GGGR-R5123-Rev.CY-001 Attachment C Frequency Plot For Cs - 137 Survey Unit: 9512-0000 Survey Unit Name: Northwest Site Grounds Mean: 0.200 pCi/g 14-12 -7 u_' 4--

2 0

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 1 7%

1.00 0 0%

Total 15 100%

Prepared By: Date:

Reviewed By: ,p,A /1,rS5e i 1 _* f Date:

D : (-ý) / / 3> Z ZýýOD 9-

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD ATTACHMENT 4C (SIGN TEST)

Health Physics Procedure GPP-GGGR-R512 1-000 Attachment A, Rev. CY-001I MAJOR Health Physics Procedure GPP-GGGR-R5 12 1-000 Attachment A, Rev. CY-001 MAJOR Sign Test Calculation Sheet For Single Radionuclisde Survey Unit Number: 9512-0000 Survey Unit Name: Northwest Site Grounds WP&IR#: 2006-0038 Classification : 3 .TYPE I (CLerror):0.05 (N) 15 Radionuclides: Cs-137 Survey Design DCGL (pCi/g): 5.38 Cs-137 Results Weighted Sum (W.) DCGL-Result Sign

--- 1 01 46fE 02' 9.54E-01 1 1f6OE 01 3 9.69E-01 1 6

3.32 01 ME 02 9.39E-01 1 3.05 5 9.44E-01 6 1 13E701 8.87E-01 1

6. 74

• E9.33E-01 1 ONPA.I M 8.93E-01 1 80 9.58E-01 1 12-6*7F,03 - 4EO,4% 1.00E+00 1 4.531-02 8.3 8E-01 9.92E-01 1 6.72E-03 1.24E-03 9.99E-01I 135E'3 2.5QO4 1.00E+00 1 6.83E-021 26E 02 9.87E-01

• ,K1.93*E*02 3.57E.03 - 9.96E-01 1

~3.1E702 5.70Eý03 K9.94E-01 1 Number of Positive Differences (S+): 15 Critical Value: 11 Survey Unit: Meets Acceptance Criterion Performed By: dd.49/ Date: _ /0____7 Independent Review: j2.M Date:___

Page 1 of I

NORTHWEST SITE GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9512-0000 RELEASE RECORD ATTACHMENT 4D (QC SPLIT RESULTS)

Connecticut Yankee Decommissioning Project Health 24265-000-GPR-GGGR-R5124-000 Attachment A Physics Procedure Split Sample Assessment Form Survey Area 9512 Survey 000Survey unit 0000 unNe:

1. Unit #: Unit Name: Northwest Site Grounds Sample Plan or WPIR#: 2006-038 SMIL #: 9512-0000-014FS Sample

Description:

Comparison of split samples collected from sample measurement location #14 and analyzed using gamma spectroscopy by an off-site vendor laboratory. The standard sample was 9512-0000-014F the comparison sample was 9512-0000-014FS.

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

Value Error Range Value Error Ratio Cs-137 6.72E-03 7.20E-03 I NONE - -9.13E-03 9.35E-03 -1.36 NA K-40 9.59E+00 2.50E-01 38 0.75- 1.33 8.96E+00 3.94E-01 0.93 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 Survey Survey Unit Arey Area#: 9512 Unit #:

Unit 0000 Name:

Name: Northwest Site Grounds Sample Plan or WPIR#: 2006-0038 SML #: 9512-0000-017FS Sample

Description:

Comparison of split samples collected from sample measurement location #17 and analyzed using gamma spectroscopy by an off-site vendor laboratory. The standard sample was 9512-0000-017F, the comparison sample was 9512-0000-017FS.

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

Value Error Range Value Error Ratio Cs-137 6.83E-02 1.59E-02 4 0.5 2 5.98E-02 8.45E-03 0.88 Y Comments/Corrective Actions: The agreement level for Cs-137 Table is provided to show acceptance criteria used was found to be acceptable, no further actions are warranted. to assess split samples.

Resolution 7

[ Agreement Range 4 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 Reviewed By: j?/7' l t Date:

WPIR - Work Plan and Inspection Record C)

SML - Sample Measurement Location designation Page I of 1