ML063540396

Final Status Survey Release Record Central Peninsula Survey Unit 9530-0002.

ML063540396
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	11/26/2006
From:	Mccarthy J Connecticut Yankee Atomic Power Co
To:	NRC/FSME
References
Download: ML063540396 (126)

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CYAPCO FINAL STATUS SURVEY RELEASE RECORD CENTRAL PENINSULA SURVEY UNIT 9530-0002 Prepared By: Cr41 Date: /0JIL-36, FSS Engineer Reviewed By. Date:J O / (Z FS Engine Approved By: __________ Date: "// 6/2, "

Technical Support Manager Revision 0

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD TABLE OF CONTENTS

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

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

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

4. SUR VEY DESIGN ............................................................................. 8

5. SURVEY IMPLEMENTATION .......................................................... 11 6.- SURVEY P1?FS J LTS ......................................................................... 12

7. QUALITY COisTUROL ...................................................................... 15

8. INVESTIGATIONS AND RESULTS ............................................. 15

9. REMEDIATION AND RESULTS ....................................................... 15

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

11. DATA QUALITY ASSESSMENT (DQA) ...................................... 16

12. ANO M ALIE S ................................................................................... 16

13. CON CLU SION ................................................................................. 16

14. A TTA CHMEN TS ............................................................................. 17 14.1 Attachment 1 - Figures (6 pages including cover) 14.2 Attachment 2 - Scan Results (3 pages including cover) 14.3 Attachment 3 - Laboratory Data (86 pages including cover) 14.4 Attachment 4 - DQA Results (14 pages including covers)

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD SURVEY UNIT DESCRIPTION Survey Unit 9530-0002 (Central Peninsula) is designated as Final Status Survey (FSS) Class 2 and consists of 6,438 m2 (1.6 acres) of uninhabited open land located approximately 2,900 feet from the reference coordinate system benchmark used at Haddam Neck Plant (HNP) (see Attachment 1). The survey unit is bounded by land Survey Unit 9530-0004. The survey unit is relatively level open space in the middle of the peninsula. The restoration of the peninsula for FSS has removed most surface interference in the survey unit.

The reference coordinates associated with this survey unit are E014 through E021 by S 107 through S 113 (refer to License Termination Plan (LTP) Section 5.4.4). 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 unit. The boundary of the survey unit 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 9530-0002 as Class 2 in September 2006.

The "Classification Basis Summary" conducted for Survey Unit 9530-0002 consisted of:

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

c) Historic and current survey records review, d) Visual inspections and a "walkdown."

A review of the 10CFR50.75(g)(1) database report identified two documents associated with this survey unit.

a) Northeast Utilities Radiological Assessment Branch memo NE-86-RA-1142: Relates to dredging of two areas of the Discharge Canal to support the Low Pressure Turbine replacement project. Spoils from dredging were relocated to this survey unit and adjacent survey unit 9530-0003.

b) Condition Report (CR) 98-0049: Documents that dredge spoils from the Discharge Canal contained radioactive material in 1987.

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

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD The survey unit had undergone FSS in the fall of 2004 and release records documenting the satisfactory completion of the FSS objectives were in preparation. In 2006, utilities were being removed as part of the decommissioning effort on the Upper Peninsula. Construction debris including Asbestos Containing Material (ACM) was identified and remediated. In addition to the ACM, several objects were also identified that had detectable radioactivity. Two pieces of angle iron were located in a water utility trench in adjacent Survey Unit 9530-0004. Most of the work involved two areas adjacent to Survey Unit 9530-0002. Based on the potential to change the final radiological status of the survey unit, another FSS was considered prudent to define the as-left radiological condition.

Soil samples were collected in 2006 to establish the radiological condition of the surface and subsurface area following removal of soil. Cs-137 was the only gamma emitting radionuclide reported in concentrations with the potential for exceeding the screening criteria. Therefore, the previous FSS data and statistical parameters were used for the survey design. Statistical quantities from the previous FSS survey are provided in Table 1.

TAMl I - BaSi SeAtiStiCA Quantities for Cso-nV from the-pre iou FSS Survey Minimum Observed Concentration (pCi/g): 2.01 E-02 Maximum Observed Concentration (pCi/g): 2.47E-01 Mean (pCi/g): 9.05E-02 Median (pCi/g): 6.I1OE-02 Standard Deviation (pCi/g): 6.86E-02 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.

This survey area is affected by existing groundwater (reference CY memo ISC 06-024) which will be a source of dose from residual radioactivity, as discussed in Section 3 under the Data Quality Objectives.

Based upon the historical information and the results of radiological surveys performed during characterization, it was concluded that there was a low probability for residual radioactivity to be present in this survey unit in concentrations greater than the Operational Derived Concentration Guideline Levels (DCGLs) justifying a final survey unit classification of Class 2 (refer to Section 3).

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD

3. DATA QUALITY OBJECTIVES (DQO)

FSS design and planning used 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 are provided herein.

The DQO process incorporated 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 technically known as the null hypothesis. Hypothesis testing rests on the premise that the null hypothesis is true and that sufficient evidence must be provided for rejection. In designing the survey plan, the underlying assumption, or null hypothesis was that residual activity in the survey unit exceeded the release criteria. Rejection of the null hypothesis would indicate that residual activity within the survey unit does not exceed the release criteria. Therefore, the survey unit does satisfy the primary objective of the FSS plan.

The primary objective of the FSS plan was to demonstrate that the level of residual radioactivity in Survey Unit 9530-0002 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 future groundwater radioactivity that will be contributed by building basements 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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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD Equation 1 HTotaI = Hsoil + HExistingGW + HFutureGW The total dose under the LTP criteria is twenty-five (25) mrem/yr TEDE from all three (3) components. The allowable total dose under the Connecticut Department of Environmental Protection (CTDEP) radiological remediation standard for 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.

This survey area is affected by existing groundwater (reference CY memo ISC 06-024). Therefore, the dose contribution from existing groundwater is bounded by two (2) mrem/yr TEDE.

This survey unit is not considered impacted by future groundwater radioactive contamination, as there are no buried 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.

Equation 2 19 mrem/yrotal = 17 mrem/yrsoil + 2 mremryrExisting GW+ 0 mrem/yrFutureGW 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, and has been established for the radionuclides of concern as provided in Table 2.

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD 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+O1 6.96E-01 Fe-55 2.74E+04 1.86E+04 1.1 OE+03 Co-60 3.81 E+00 2.59E+00 1.52E-01 Ni-63 7.23E+02 4.92E+02 2.89E+O1 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 8.57E+00 5.04E-0 I 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 1.01E+01 6.87E+00 4.04E-0 I 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+O1 2.01 E+01 1.1 8E+00 Pu-239/240 2.67E+O I 1.82E+01 1.07E+00 Pu-241 8.70E+02 5.92E+02 3.48E+0 I 5

Am-241I ) 2.58E+OI 1.75E+01 1.03E+00 Cm-243/244 2.90E+0I 1.74E+01 1.16E+00 (1) Bold indicates those radionuclides considered to be Hard-to-Detect (HTD)

(2) The Base Case Soil DCGLs for soil are specified by the LTP in Chapter 6 and are equivalent to 25 mrem/yr TEDE (3) The Operational DCGL is equivalent to 17 mrem/yr TEDE (4) The required MDC is equivalent to I mrem/yr TEDE (5) Americium-241 can be analyzed by gamma and alpha spectroscopy and is considered to be Easy to Detect (ETD); the preferred result is the alpha spectroscopy's when both analyses are performed.

Another important facet of the DQO process is to identify the radionuclides of concern and determine the concentration variability. Soil samples were collected in 2006 to establish the radiological condition of the surface and subsurface area following removal of soil. Cs-137 was the only gamma emitting radionuclide reported in concentrations with the potential for exceeding the screening criteria. The previous FSS data and statistical parameters were used for the survey design and are provided in Table 1.

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD Instrument DQOs included a verification of the ability of the survey instrument to detect the radiation(s) of interest relative to the DCGL. Survey instrument response checks were required prior to issue and after the instrument had been used. Control and accountability of survey instruments was required to assure the quality and prevent the loss of data.

As part of the DQOs applied to laboratory processes, analysis results were reported as actual calculated results. Results reported as less than Minimum Detectable Concentration (MDC) were not accepted for FSS. Sample report summaries included unique sample identification, analytical method, radionuclide, result, and uncertainty to two (2) 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, "Preparation of Final Status Survey Plans".

The FSS plan 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 9530-0002 (refer to Section 3). Other radionuclides identified during this FSS would be evaluated to ensure adequate survey design.

Surrogate DCGLs were not required for this survey unit based the previous FSS of this survey unit 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 aggregates 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 it is a Class 2 area and discrete, elevated areas of contamination were not expected.

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

The number of soil samples for FSS was determined in accordance with Procedure RPM 5.1-12, "Determination of the Number of Surface Samples for Final Status Survey." The Lower Bound of the Gray Region (LBGR) was set in accordance with Procedure RPM 5.1-11 to 5.24 to maintain the relative shift (A/o) in the range of 1 and 3. The resulting Adjusted Relative Shift was 2.0. 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 the MARSSIM in support of the Revision 0 8 Revision 0 8

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD decommissioning license termination rule (10 CFR 20, Subpart E). The result of the COMPASS computer run showed adequate power for the survey design.

The survey design specified fifteen (15) surface soil samples for non-parametric statistical testing and two (2) samples at biased locations.

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 systematic triangular grid pattern with a random starting point was selected for sample design, which is appropriate for a Class 2 area.

Judgmental sampling was included as a feature of this survey design to account for any anomalies potentially identified in the field.

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 M~easuirement Locations with AssociatedjGPS Coordinates Thesignation >Northing VEasting 9530-0002-OOIF 235542.06 670286.23 9530-0002-002F 235542.06 670355.12 9530-0002-003F 235542.06 670424.01 9530-0002-004F 235542.06 670492.90 9530-0002-005F 235482.40 670389.57 9530-0002-006F 235482.40 670458.45 9530-0002-007F 235482.40 670527.34 9530-0002-008F 235482.40 670596.23 9530-0002-009F 235422.74 670492.90 9530-0002-OIOF 235422.74 670561.79 9530-0002-01 IF 235422.74 670630.67 9530-0002-012F 235422.74 670699.56 9530-0002-013F 235422.74 670768.45 Revision 0 9 Revision 0 9

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD

'Table3 - Sample Measurement Locations with ~Associated GiPS Coordinates

~Designation Northing Eastin~g_

9530-0002-014F 235363.09 670665.12 9530-0002-015F 235363.09 670734.01 9530-0002-016F 235311.90 670727.10 9530-0002-017F 235563.44 670233.36 Procedure RPM 5.1-11 specifies that 5% of the samples are required to be selected for HTD analysis. Two (2) soil samples, or about 10% of the number of samples that would be used for non-parametric statistical testing were randomly selected for HTD radionuclide analysis using the Microsoft Excel "RANDBETWEEN" function. Each sample was sent off-site for a full suite analysis of the HTD radionuclides specified in the LTP, Table 2-12, "Radionuclides Potentially Present at Haddam Neck Plant" and as provided in Table 2.

The implementation of 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 "RANDBETWEEN" function. The number of quality control soil samples was about 10% of fifteen (15) samples.

The LTP specifies that scanning will be performed along with a combination of systematic and judgmental measurements (samples) for a Class 2 land area and should cover between 10% to 100% of the area. The fraction of scanning coverage was determined during the DQO process with the total amount and location(s) based on the likelihood of finding elevated activity during FSS.

Based on the historical site assessment, the characterization data available, and the use of the survey unit to store spoils from remediation, it was determined that scanning was required in three (3) separate areas. The total surface area to be scanned was approximately 12% of the survey unit. A map of the scan grid locations is provided in Attachment 1.

For this Class 2 survey unit, the "Investigation Level" for area scanning and soil sample measurement results are those levels specified in LTP, Table 5-8. Table 4 provides a synopsis of the survey design.

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD Tabfle -~S nopsis of the Surve Nýfesi ,n Y eatur~e Designi Criteria . ~ Basi~s Survey Unit Land Area 6,438 m2 Based on AutoCAD-LT Type 1 and Type 2 errors were 17 0.05, sigma was 0.069 pCi/g, Number of Measurements (15 systematic grid) the LBGR was adjusted to 5.2 (2 biased) to maintain Relative Shift in the range of I and 3 Grid Spacing 22.3 m Based on triangular grid Administratively set to achieve Operational DCGL 5.38 pCi/g Cs-137 17 mrem/yr TEDE (1)

The Operational DCGL meets Soil Investigation Level 5.38 pCi/g Cs-137 the LTP criteria for a Class 2 survey unit Scan Survey Area Approximately 12% The LP requires >10% area Coverage of the areaunt coverage for Class 2 survey units Detectable over Administratively set to achieve Scan Investigation Level background 17 mrem/yr TEDE (1)

(1) The allowable dose for soil in this survey unit is 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) 2006-0038. The WP&IR package included a detailed FSS plan, job safety analysis, job planning checklist and related procedures for reference. Daily briefings were conducted to discuss the expectations for job performance and the safety aspects of the survey. The "Daily Survey Journal" was used to document field activities and other information pertaining to the FSS.

One (1) scan area was established that constituted approximately 12% of the surface area of Survey Unit 9530-0002. Grid lines, one meter wide, were painted on the ground of the scan area. A background survey was performed around the survey unit and it was determined that, using an Eberline E-600 with a SPA-3 sodium iodide detector, background ranged from 6,480 counts per minute (cpm) up to 7,930 cpm.

The scan area was established and scanned for elevated readings (see Attachment 2 for all scan results). Scanning was performed with an Eberline E-600 using a SPA-3 sodium iodide detector. The E-600 was operated in the rate-meter mode and used with 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. Approximately 12% of the survey unit was scanned.

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD Measurement locations were identified in North American Datum (NAD) 1927 coordinates using GPS coordinates; sample locations were identified and marked with a surveyor's flag or paint for identification. At each sample location, a one (1) meter radius around the sample flag or paint mark was scanned for elevated radiation levels.

Seventeen (17) surface soil samples were collected and packaged in accordance with Haddam Neck Plant (HNP) Procedure RPM 5.1-3, "Collection of Sample Media for 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 Final Status Survey Samples."

Two (2) samples (9530-0002-005F and 9530-0002-008F) were randomly selected for HTD radionuclide analysis.

The implementation of survey specific quality control measures included the collection of two (2) samples (9530-0002-004F and 9530-0002-014F) for "split sample" analysis.

6. SURVEY RESULTS All field survey activities were conducted between September 7, 2006 and September 8, 2006.

The area was scanned in accordance with the FSS plan on September 7, 2006.

No elevated measurement locations were identified during scanning.

The sample 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.

Scan results are provided in Attachment 2.

Table Scan Results foir Sampl~e Measuremnent Locations~

Sample Highest Logged < Acin eel=

Action Level Measurement Readingy >Action Le-el Location ( kepm) < (kcpmn) 1 6.18 7.72 NO 2 7.65 8.61 NO 3 7.67 9.02 NO 4 6.49 7.97 NO 5 6.89 8.63 NO 6 7.65 9.20 NO 7 6.47 8.29 NO Revision 0 12 Revision 0 12

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD 6.2u /.64 NO 9 6.39 7.78 NO 10 7.16 7.83 NO 11 6.18 7.37 NO 12 6.31 7.52 NO 13 6.88 7.78 NO 14 6.47 7.93 NO 15 6.36 8.09 NO 16 6.16 8.09 NO 17 6.51 7.58 NO (1) The action level is based on a measurement above ambient background in accordance with the FSS plan.

(2) The FSS plan requires movement of the sample measurement location to the area within the 1 meter radius yielding the response above the action level The scan area, that comprised approximately 12% of the total surface area for the survey unit, was scanned for elevated radiation levels. Table 6 provides an overview of the scan area survey. Scan results are provided in Attachment 2.

Table 6 -Scan Area Resultsr None - no 1 7.82 8.35 elevated areas None

___ _ __ _identified _

(1) The action level is based on a measurement above ambient background (2) ER is an abbreviation associated with the barcodes used in the field where ER stands for Elevated Reading The off-site laboratory employed for the radiological analyses of samples was General Engineering Laboratories, LLC, Charleston, South Carolina. The laboratory analyzed the fifteen (15) samples collected for non-parametric statistical testing, the associated field splits, and the two (2) biased samples using gamma spectroscopy. Gamma spectroscopy analysis was performed to the required MDCs. Gamma spectroscopy results identified some radionuclides meeting the accepted criteria for detection (i.e., a result greater than two Revision 0 13 Revision 0 13

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD standard deviations uncertainty). However, Cs-137 was the only radionuclide reported in concentrations exceeding the de-selection criteria.

Cs-137 was identified in all fifteen (15) samples collected for non-parametric statistical testing. Cs-137 was the primary radionuclide confirming the DQOs.

The mean of the gamma spectroscopic analysis results for the sample population indicated that Cs-137 was present at levels lower than the concentrations of Cs-137 found in soil at off-site locations within the vicinity of the HNP as presented in the Health Physics TSD BCY-HP-0063.

A summary of the fifteen (15) samples collected for non-parametric statistical testing results is provided in Table 7.

YJJVV-UL-UUIF 7.73E-02 0.014 9530-0002-002F 9.32E-02 0.017 9530-0002-003F 3.15E-02 0.006 9530-0002-004F 8.55E-02 0.016 9530-0002-005F 1.21E-01 0.022 9530-0002-006F 2.07E-01 0.038 9530-0002-007F 7.69E-02 0.014 9530-0002-008F 6.91E-02 0.013 9530-0002-009F 4.49E-02 0.008 9530-0002-OIOF 1.96E-01 0.036 9530-0002-01 IF 5.93E-02 0.011 9530-0002-012F 6.16E-02 0.011 9530-0002-013F 8.04E-02 0.015 9530-0002-014F 4.22E-02 0.008 9530-0002-015F 4.82E-02 0.009 (1) The Operational DCGL from Table 2 is 5.38 pCi/g for Cs-137 to achieve 17 mrem/yr TEDE The off-site laboratory also processed two (2) samples for HTD analysis 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. All analyses met the required MDC.

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD As previously stated in Section 4 of this report, the criteria for de-selection of a radionuclide is a concentration that is less than 5% of the Operational DCGL for individual radionuclides and less than 10% of the Operational DCGLs for aggregates. None of the HTD radionuclides identified by analysis met the criteria for detection (i.e., a result greater than two standard deviations uncertainty).

Two (2) biased samples were collected at locations selected by FSS ,Supervision based on professional judgment and observation. Gamma spectroscopy analysis was performed by the off-site laboratory to the required MDC.

Y -JiU-UUU2-U11 I Y.I IIL-U2 U.UI /

-1 9530-0002-017F O.OOE+00 0.000 (1) The Operational DCGL from Table 2 is 5.38 pCi/g for Cs-137 to achieve 17 mrem/yr TEDE

7. QUALITY CONTROL The off-site laboratory processed the split samples and performed gamma spectroscopy analysis. Ten percent (10%) of the samples were selected for analysis, which exceeds the 5% minimum required by the LTP. The data were 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 field split results for Cs-137 at location 9530-0002-004. However, Cs-137 was not detected in sufficient quantities in the field split results at location :9530-0002-014 to evaluate in accordance with procedure. Evaluation using the reported results for K-40 resulted in acceptable agreement between the field isplit results at location 9530-0002-014.

The sample analysis vendor, General Engineering Laboratories, LLC, maintains quality control and quality assurance plans as part of normal operation. Refer to Attachment 4 for data and data quality analysis results.

8. INVESTIGATIONS AND RESULTS No confirmatory samples were necessary.

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 is unnecessary and that the remaining residual radioactivity in soil was ALARA.

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10. CHANGES FROM THE FINAL STATUS SURVEY PLAN No changes were made to the FSS plan.

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 2.

The preliminary data review consisted of calculating basic statistical quantities (e.g., mean, median, standard deviation). 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 unrestricted release criteria with adequate power as required by the DQOs.

For Cs-137, the range of the data, about four (4) standard deviations, was not a particularly large variation considering that the levels were essentially at existing environmental levels where such variation is to be expected. The difference between the mean and median was 18% 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 indicates positive skewness as confirmed by the calc ulated skew of 1.6.

All data, assessments, and graphical representations are provided in Attachment 4.

12. ANOMALIES No anomalies were noted.

13. CONCLUSION Survey Unit 9530-0002 has met the final DQOs of the FSS plan. The ALARA criteria for soils as specified in Chapter 4 of the LTP were achieved. Elevated Measurement Comparison and remediation was not required.

Cs-137 was used for statistical testing to determine the adequacy of the survey unit for FSS.

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD 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 is properly designated as Class 2.

The dose contribution from soil is less than 1 mrem/yr TEDE based on the average concentration of the samples used for non-parametric statistical sampling.

This survey area is affected by existing groundwater (reference CY memo ISC 06-024); therefore the dose contribution from existing groundwater is bounded at two (2) mrem/yr TEDE.

This survey unit is not considered impacted by future groundwater radioactive contamination, as there are underground structures, systems or components containing residual radioactive material within the groundwater saturated zone in the area (reference CY memo ISC 06-024); therefore, the dose contribution from future groundwater is 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, will not exceed 3 mrem/yr TEDE. Therefore, Survey Unit 9530-0002 is acceptable for unrestricted release.

14. ATTACHMENTS 14.1 Attachment 1 - Survey Unit Location Map 14.2 Attachment 2 - Scan Results 14.3 Attachment 3 - Laboratory Results 14.4 Attachment 4 - DQA Results Revision 0 17

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD ATTACHMENT 1 (FIGURES)

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CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD ATTACHMENT 2 (SCAN RESULTS)

Survey Release Record Sample Location Scan Results Survey Unit 9530-0002 Sample Name Background Action Level Results Above Log Date Log Time E600 SIN Probe S/N (cPm) (cPr) (cPm) AL 9530-02-SL-00-01-0 6.56E+03 7.72E+03 6.18E+03 9/7/2006 14:45:00 1117 1008 9530-02-SL-00-02-0 7.38E+03 8.61E+03 7.65E+03 9/7/2006 14:30:00 1117 1008 9530-02-SL-00-03-0 7.76E+03 9.02E+03 7.67E+03 9/7/2006 14:34:00 1117 1008 9530-02-SL-00-04-0 6.79E+03 7.97E+03 6.49E+03 9/7/2006 13:46:00 1117 1008 9530-02-SL-00-05-0 7.40E+03 8.63E+03 6.89E+03 9/7/2006 13:54:00 1117 1008 9530-02-SL-00-06-0 7.93E+03 9.20E+03 7.65E+03 9/7/2006 13:59:00 1117 1008 9530-02-SL-00-07-0 7.09E+03 8.29E+03 6.47E+03 9/7/2006 13:42:00 1117 1008 9530-02-SL-00-08-0 6.49E+03 7.64E+03 6.20E+03 9/7/2006 13:39:00 1117 1008 9530-02-SL-00-09-0 6.62E+03 7.78E+03 6.39E+03 9/7/2006 14:23:00 1117 1008 9530-02-SL-00-10-0 6.66E+03 7.83E+03 7.16E+03 9/7/2006 14:03:00 1117 1008 9530-02-SL-00-11-0 6.24E+03 7.37E+03 6.18E+03 9/7/2006 13:28-00 1117 1008 9530-02-SL-00-12-0 6.38E+03 7.52E+03 6.31 E+03 9/7/2006 13:35:00 1117 1008 9530-02-SL-00-13-0 6.62E+03 7.78E+03 6.88E+03 9/7/2006 14:20-00 1117 1008 9530-02-SL-00-14-0 6.76E+03 7.93E+03 6.47E+03 9/7/2006 14:07:00 1117 1008 9530-02-SL-00-15-0 6.90E+03 8.09E+03 6.36E+03 9/7/2006 14:16:00 1117 1008 9530-02-SL-00-16-0 6.90E+03 8.09E+03 6.16E+03 9/7/2006 14:50:00 1117 1008 9530-02-SL-00-17-0 6.43E+03 7.58E+03 6.51 E+03 9/7/2006 13:32:00 1117 1008 AL - Action Level

Survey Release Record Scan Area Results Survey Unit 9530-0002 9530-0002 SCAN AREA 1 Sample Name Background Action Level Results Above Loq Date Log Time E600 SIN Probe S/N (cpm) (cPnM) (cpm) AL 9530-02-SC-01-01-0 7.39E+03 8.62E+03 6.81E+03 9/7/2006 10:07:00 1117 1008 9530-02-SC-01-02-0 6.87E+03 8.05E+03 6.46E+03 9/7/2006 10:15:00 1117 1008 9530-02-SC-01-03-0 7.18E+03 8.39E+03 7.82E+03 9/7/2006 10:23:00 1117 1008 9530-02-SC-01-04-0 6.49E+03 7.64E+03 7.37E+03 9/7/2006 10:33:00 1117 1008 9530-02-SC-01-05-0 6.48E+03 7.63E+03 5.59E+03 9/7/2006 10:52:00 1117 1008 9530-02-SC-01-06-0 7.86E+03 9.13E+03 7.18E+03 9/7/2006 11:00:00 1117 1008 9530-02-SC-01-07-0 7.32E+03 8.54E+03 7.24E+03 9/7/2006 11:05:00 1117 1008 9530-02-SC-01-08-0 6.92E+03 8.11E+03 7.27E+03 9/7/2006 11:09:00 1117 1008 9530-02-SC-01-09-0 6.95E+03 8.14E+03 6.90E+03 9/7/2006 11:03:00 1114 1014 9530-02-SC-01-10-0 7.93E+03 9.20E+03 7.39E+03 9/7/2006 10:58:00 1114 1014 9530-02-SC-01-11-0 7.33E+03 8.55E+03 7.41E+03 9/7/2006 10:52:00 1114 1014 9530-02-SC-01-12-0 7.61E+03 8.86E+03 6.51E+03 9/7/2006 10:44:00 1114 1014 9530-02-SC-01-13-0 7.50E+03 8.74E+03 7.53E+03 9/7/2006 10:35:00 1114 1014 9530-02-SC-01-14-0 7.77E+03 9.03E+03 7.13E+03 9/7/2006 10:30:00 1114 1014 9530-02-SC-01-15-0 7.14E+03 8.35E+03 7.82E+03 9/7/2006 10:25:00 1114 1014 9530-02-SC-01-16-0 7.05E+03 8.25E+03 6.90E+03 9/7/2006 10:18:00 1114 1014 AL - Action Level

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD ATTACHMENT 3 (LABORATORY DATA)

General Narrative 1

CASE NARRATIVE For CONNECTICUT YANKEE RE: Soil PO# 002332 Work Order: 171459 SDG: MSR#06-1237 September 21, 2006 Laboratory Identification:

General Engineering Laboratories, LLC Mailing Address:

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

2040 Savage Road Charleston, South Carolina 29407 Telephone Number:

(843) 556-8171 Summary:

Sample receipt The sample(s) for this Project arrived at General Engineering Laboratories, LLC, (GEL) in Charleston, South Carolina on September 12, 2006. All sample containers arrived without any visible signs of tampering or breakage. The chain of custody contained the proper documentation and signatures.

The laboratory received the following sample(s):

Sample ID Client Sample ID 171459001 9530-0002-00 IF 171459002 9530-0002-002F 171459003 9530-0002-003F 171459004 9530-0002-004F 171459005 9530-0002-004FS 171459006 9530-0002-006F 171459007 9530-0002-007F 171459008 9530-0002-009F 171459009 9530-0002-01OF 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 (83) 768-1178 - www.gel.com

171459010 9530-0002-01 IF 171459011 9530-0002-012F 171459012 9530-0002-013F 171459013 9530-0002-014F 171459014 9530-0002-014FS 171459015 9530-0002-015F 171459016 9530-0002-016F 171459017 9530-0002-017F 171459018 9530-0002-005F 171459019 9530-0002-008F Items of Note:

Ther'e are no items of note.

Case Narrative:

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

Analytical Request:

Seventeen soil samples were analyzed for FSSGAM.

Two soil samples were analyzed for FSSALL.

Internal Chain of Custody:

Custody was maintained for the sample(s).

Data Package:

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

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

Cheryl Jones Project Manager GENERAL ENGINEERING LABORATORIES, LLC a Member of THE GEL GROUP,INC.

PO. Box 30712 - Charleston, SC 29417 - 2040 Savage Road (29407)

Phone (843) 556-8171 , Fax (143) 766-1178 www.gel.com

List of current GEL Certifications as of 21 September 2006 State Certification Alaska UST-062 Arizona AZ0668 Arkansas 88-0651 CLIA CLIA 42D0904046 42O.9.0...

California 01151CA Colorado GenEngLabs Connecticut PH-0169 Dept. of Navy NFESC 413 EPA WG- I SJ Florida/NELAP E87156 Georgia E87156 (FL/NELAP)

Hawaii NIA Idaho N/A Illinois 200029 Indiana C-SC-0I Kansas Kentucky E-10332 90129 I

Louisiana 03046 Maryland 270 Massachusetts M-SCOI2 Michigan Nevada New Jersey 9903 SC 12 .....

SCO02 New Mexico

-New York 11501 North Carolnrinia Not arolina Drinking W 45709 North Dakota R-158 Oklahoma 9904 Pennsylvania 68-00485

. .Sout'arolina . . 101 20001/1058500-/LOfT20002..2 -:

Tennessee 02934 Texas TX213-2006A Texas NELAP TI04704235-06-TX U.S. Dept of Agriculture S-52597 US Army Corps of Engineer N/A Utah 8037697376 GEL Vermont VT87156 00151

-. Wiisingi[o-n, C1641 4

Chain of Custody And Supporting.

Documentation 5

Health Physics Procedure GPP-GGGR-RP5104-003-Attachment B-CY-001 Major Connecticut Yankee Atomic Power Company Chain of Custody Form No. 2006-00540 362 Injun Hollow Road, East Hampton, CT 06424 860-267-2556 Project Name: Haddam Neck Decommissioning Analyses Requested Lab Use Only Contact Name & Phone: Comments:

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

General Engineering Laboratories 2040 Savage Road. Charleston SC. 29407

• 843 556 8171. Attn. Cheryl Jones CA co cc M/

Priority: El30 D. Z 14 D. El 7 D. El 3 D. Cnae Sample size-Sample Designation Date Time Media Type &Type Comment, Preservation Lab Sample ID Code Code Code 9530-0002-OOIF 9/7/06 1446 TS G BP X 0%~

9530-0002-002F 9/7/06 1429 TS G BP X 9530-0002-003F 9/7/06 1435 TS G BP X 9530-0002-004F 9/7/06 1343 TS G BP X 9530-0002-004FS 9/7/06 1343 TS G BP 9530-0002-005F 9/7/06 1354 TS G BP X 9530-0002-006F 9/7/06 1358 TS G BP X 9530-0002-007F - 9/7/06 1342 TS G BP X 9530-0002-008F 9/7/06 1339 TS G BP X 9530-0002-009F 9/7/06 1423 TS G BP X 9530-0002-OIOF 9/7/06 1403 TS G BP X NOTES: PO #: 002332 MSR #: 06-17*6 SSWP# NA Z LTP QA El Radwaste QA [I Non QA Samples Shipped Via: Internal Container Z Fed Ex Temp.: D Deg.

El UPS C Hl Hand Custody Seale4?

• /Date/Tune . ,Date/Time Custody eal I) Relinqui* t El Other 9c C)T Intact?

3) Relinquishe--dBy Date/Time 4) Receiveda By D Date/Time YO NO Bill of Lading #

Health Physics Procedure GPP-GGGR-R5104-003-Attachment B-CY-001 Major Connecticut Yankee Atomic Power Company Chain of Custody Form No. 2006-00541 362 Injun Hollow Road, East Hampton, CT 06424 860-267-2556 Project Name: Haddam Neck Decommissioning Analyses Requested Lab Use Only Contact Name & Phone: Comments:

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

General Engineering Laboratories 2040 Savage Road. Charleston SC. 29407 843 556 8171. Attn. Cheryl Jones Priority: E-30 D . [ 14 D . I 7 D . 3 D. Container Sample Size- +..

Sample Designation Date Time Media Type &Type Comment, Preservation Lab Sample ID Code Code Code 9530-0002-01 IF 9/7/06 1330 TS G BP X

-4 9530-0002-012F 9/7/06 1335 TS G BP X 9530-0002-013F 9/7/06 1420 TS G BP X 9530-0.002-014F 9/7M06 1407 TS G BP X 9530-0002-014FS 9/7/06 1407 TS G BP X 9530-0002-015F 9/7/06 1416 TS G BP X 9530-0002-016F 9/7/06 1453 TS G BP X 9530-0002-017F 9/7/06 1332 TS G BP X NOTES: PO #: 002332 MSR #: 06-/273 SSWP#NA Z LTPQA D] Radwaste QA 0 Non QA Samples Shipped Via: Internal Container

[ FedEx Temp.: _k Deg.

EUPS C E] land Custody Sealed?

YO NO

1) Relinquished B Date/Time 2) Received By Date/Time Custody Seal

[I Other Intact?

3) Reli By ,qsheui Date/Time 4) leived By )ate/Time YO NO Bill of Lading #

RE: MSI(#U0-1237 Flease contirm

Subject:

RE: MSR#06-1237 Please confirm From: "John McCarthy" <McCarthy@CYAPCO.com>

Date: Tue, 12 Sep 2006 14:45:27 -0400 To: "Cheryl Jones" <cj @gel.com>

FSSGAM, sorry for the slip.

Original Message -----

From: Cheryl Jones fmailto:cj@gel.com]

Sent: Tuesday, September 12, 2006 2:44 PM To: John McCarthy Cc: Amanda Rasco

Subject:

MSR#06-1237 Please confirm Jack, We received all these samples today with no problems. The COC for 2006-00540 under MSR#06-1237 doesn't have the analysis marked for sample 9530-0002-004FS. Please confirm you need FSSGAM on this sample.

Thanks, Cheryl John McCarthy wrote:

Our whole network was down, so I apologize for the short notice.

We are sending 40 samples for analysis. The COCs are attached. Basic breakdown is 4 samples IITD 7 day TAT; 27 samples (2 or 3 HTD) 14 day TAT and 19 samples (2 HTD) 14 day TAT.

Cheryl A. Jones Project Manager/PM Team Leader General Engineering Laboratories, LLC 2040 Savage Road Charleston, SC (USA) 29407 Direct: 843.769.7388 Main: .843.556.8171 x 4243 Fax: 843.766.1178 E-mail: cj@gel.com Web: WWW..gel.com The information contained in this message is confidential and is intended only for the use of the individual or firm of record. If you are not the Intended recipient and have received this message in error, you are asked not to copy or distribute any of the pages that follow. Please notify the sender immediately by telephone or email if you have received this communication in error and destroy the contents that do not pertain to your business with The GEL Group, INC.

I of I 8 9/12/2006 2:56 PM

Connecticut Yankee Statement of Work for Analytical Lab Services .CY-iSC-SOW-01 Figure 1. Sample Check-in List, Date/Time Received: qx2 "-- 3 -,

SDG#: " " O(., T23-Work Order Number: "7% 4- I(I I Shipping Cdntainer ID.. q q tfl t/2 (V* - ,,, Chain of Custody # &OO--" OQS( 6 .

1. Custody Seals.o0i shipping container intact?.. "Yes t ] No [ ] Al 4 -

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

3. Chain-of-Custody record present? Yes o []

4. Cooler, tmperature, i .

5. Vermiculite/packing materials is: Wet [ Dry F" 6: Number of samples in shipping container: , _ _ __'_'

7. Sample holding times exceeded? Yes []No

10. Were any anomalies identified in sample receipt? Yes [ No

11. Description of anomalies (include sample numbers):

ýampie Custodian/Laboratory; '.

Telephoned to: -. By "

.. .". 9 . ,

Connecticut YankeeCY-ISC-SOW-001 Statement of Work for Analytical Lab Services ,,S -

Figure 1. -Sample Check in List.

Date/Time Received: '---. 2/0 - ' *. ,

SDG#: j

• 2 . ,., '.

.. ,L . *11-, .A Work Order Number:

• ShippingCdntaiaer Shppn D .dta Chain of, Custodyy#yy 5~ 41$

1. Custody Seals of shipping container intact?... -Yesl I No ]A

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

• 3. Chain-of-Custody record present? YesI No []

4. Cooler temperature

5. Vermiculite/packing materials is: Wet (C Dry t ] tp.. Pr-

6. Number of samples in shipping container: ,. 1.

7. Sample holding times exceeded? Yes 3 No D1

.8. Samples have*: ,

I_ tape hazard labels Ustody seals -appropriate sample labels

9. Samples are:

Sood condition leaking

• I broken -- have air bubbles

10. 'Were any anomalies identified in sample receipt? Yes No, L _.. escription of anomalies (include sample numbers): ,4?e A+,.

Sample Custodian/Laboratory:- .Date. 219 7

Telephoned to: On_

BY-10

SAMPLE RECEIPT & REVIEW FORM FM use only Client: CZU, yie k. Z SGARCOC/Work Order lit qq-q Date Received: 0&1(,7 LJ. PM(A) Review on-confor ng Items are resolved prior to signing):

Received By: :If I Sample Receipt Criteria CXI(/lfInms re Shipping containers received intact Circle Applicable; seals broken damaged container leaking con (er other (describe) and sealed?

Samples requiring cold Circle Coolant # ice bags blue ice Ice none other describ 2 preservation within (4 +1- 2 C)?

,Record Dreservaiion method.

Chain of custody documents included with shipment?

4 Sample containers intact and Circle Applicable: seals en damaged container leaking container other (describe) sealed?

5 Samples requiring chemical Sample ID'S. mlners affected and observed pH:

-preservation at proper 21H?

VOA vials free of headspace sWie ID's and cont*iners affeccW:ý 6 (defined as < 6mm bubble)?__

Are Encore containers present?

7 (If yes, immediately deliver to VOA laboratory) __I__

imSamples received within holdi !id's and tests affected:

9 Sample ID's on COC tch ID's Sample ID's and containers affected:

on bottles? _

Date & time oOC match date Sample D's affected:

0 & time on ties?

Numbe containers received Sample ID's affected:

mat number indicated on COC?

C form is properly signed in

- relinquished/received sections?

L" O- 0 *, 005 3c)'

4Air Bill ,T racking #'s, &

Additional Comments

• RSORADReceipt #

'S a1t *If> x2 area background is observed on samples identified as "non-Suspected Hazard Information

• regulated/non-radioactive", contact the Radiation Safety group for further

__ 0 E investigation.

AA-Radiological Classification? ....- Maximum Counts Observed*: 04, n0 B PCB Regulated? - Comments:

Shipped as DUT Hazardous C Material? If yes, contact Waste /" Hazard Class Shipped:

Manager'or ESH Manager. UN#:

11

SAMPLE RECEIPT & REVIEW FORM CONTINUATION FORM Client: Date Received:

7q il 1476t sg-JiQ oo-oS'I

-7q90 014k2 2 Zo~o(&-ea 2'7 ~k4W x-rs-7~~~.9e~ ~~7w -CO5 3 5 6o~q-p ~TO-c, ~ ?-*

7r.'~-~To¶ 40 12

RADIOLOGICAL ANALYSIS 13

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

Work Order 171459 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: 567824 Prep Batch Number: 567639 Dry Soil Prep GL-RAD-A-021 Batch Number: 567635 Sample ID Client ID 171459018 9530-0002-005F 171459019 9530-0002-008F 1201181597 Method Blank (MB) 1201181598 171450001(9520-04-1C) Sample Duplicate (DUP) 1201181599 171450001(9520-04-1 C) Matrix Spike (MS) 1201181600 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.

14

Ouality 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: 171450001 (9520-04-1C).

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 15

Product: Alphaspec Pu, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Pu- 11-RC Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 567825 Prep Batch Number: 567639 Dry Soil Prep GL-RAD-A-021 Batch Number: 567635 Sample ID Client ID 171459018 9530-0002-005F 171459019 9530-0002-008F 1201181601 Method Blank (MB) 1201181602 171450001(9520-04-1C) Sample Duplicate (DUP) 1201181603 171450001(9520-04-1C) Matrix Spike (MS) 1201181604 Laboratory Control Sample (LCS)

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

Calibration. Information:

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

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

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

Ouality Control (OC Information:

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

Designated QC The following sample was used for QC: 171450001 (9520-04-1C).

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

16

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-1 1-RC Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 567826 Prep Batch Number: 567639 Dry Soil Prep GL-RAD-A-021 Batch Number: 567635 17

Sample ID Client ID 171459018 9530-0002-005F 171459019 9530-0002-008F 1201181605 Method Blank (MB) 1201181606 171450001(9520-04-1 C) Sample Duplicate (DUP) 1201181607 171450001(9520 iC) Matrix Spike (MS) 1201181608 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 (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: 171450001 (9520-04-IC).

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 18

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

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Analytical Method: EML HASL 300, 4.5.2.3 Prep Method: Dry Soil Prep Analytical Batch Number: 569470 Prep Batch Number: 567635 19

Sample ID Client ID 171459001 9530-0002-001F 171459002 9530-0002-002F 171459003 9530-0002-003F 171459004 9530-0002-004F 171459005 9530-0002-004FS 171459006 9530-0002-006F 171459007 9530-0002-007F 171459008 9530-0002-009F 171459009 9530-0002-01OF 171459010 9530-0002-011F 171459011 9530-0002-012F 171459012 9530-0002-013F 171459013 9530-0002-014F 171459014 9530-0002-014FS 171459015 9530-0002-015F 171459016 9530-0002-016F 171459017 9530-0002-017F 171459018 9530-0002-005F 171459019 9530-0002-008F 1201185434 Method Blank (MB) 1201185435 171459001(9530-0002-00 IF) Sample Duplicate (DUP) 1201185436 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-013 REV# 12.

Calibration Information:

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

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

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

Quality Control (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: 171459001 (9530-0002-001F).

QC Information 20

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 21

Qualifier Reason Analyte Sample UI Data rejected due to high counting uncertainty. Bismuth-212 171459019 UI Data rejected due to high peak-width. 171459014 Cesium- 137 171459017 UI Data rejected due to interference. Manganese-54 171459011 171459018 U' Data rejected due to low abundance. Actinium-228 1201185435 Cesium-134 171459003 171459005 171459010 171459011 171459015 Cobalt-60 171459017 Silver- 108m 171459012 171459017 Thallium-208 171459018 Method/Analysis Information Product: GFPC, Sr9O, solid-ALL FSS Analytical Method: EPA 905.0 Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 567998 Prep Batch Number: 567639 Dry Soil Prep GL-RAD-A-021 Batch Number: 567635 22

Sample ID Client ID 171459018 9530-0002-005F 171459019 9530-0002-008F 1201181989 Method Blank (MB) 1201181990 171450001(9520-04-IC) Sample Duplicate (DUP) 1201181991 171450001(9520-04-1C) Matrix Spike (MS) 1201181992 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 (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: 171450001 (9520-04-IC).

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

Technical Information:

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

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

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

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

23

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: 567935 Sample ID Client ID 171459018 9530-0002-005F 171459019 9530-0002-008F 1201181858 Method Blank (MB) 1201181859 171454026(9530-0004-012F) Sample Duplicate (DUP) 1201181860 171454026(9530-0004-012F) Matrix Spike (MS) 1201181861 Laboratory Control Sample (LCS)

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

Calibration Information:

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

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

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

24

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: 171454026 (9530-0004-012F).

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 high MDAs.

Miscellaneous Information:

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information 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: 567933 Prep Batch Number: 567639 Dry Soil Prep GL-RAD-A-021 Batch Number: 567635 25

Sample ID Client ID 171459018 9530-0002-005F 171459019 9530-0002-008F 1201181849 Method Blank (MB) 1201181850 171450001(9520-04-1C) Sample Duplicate (DUP) 1201181851 171450001(9520-04-1C) Matrix Spike (MS) 1201181852 Laboratory Control Sample (LCS)

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

Calibration Information:

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

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

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

Quality Control (QC) Information:

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

Designated QC The following sample was used for QC: 171450001 (9520-04-IC).

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 1201181849 (MB), 1201181850 (9520-04-IC), 1201181851 (9520-04-IC), 1201181852 (LCS), 171459018 (9530-0002-005F) and 171459019 (9530-0002-008F) were recounted due to the quench number being outside the calibration range.

26

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: 567934 Prep Batch Number: 567639 Dry Soil Prep GL-RAD-A-021 Batch Number: 567635 Sample ID Client ID 171459018 9530-0002-005F 171459019 9530-0002-008F 1201181854 Method Blank (MB) 1201181855 171450001(9520-04-1 C) Sample Duplicate (DUP) 1201181856 171450001(9520-04-1 C) Matrix Spike (MS) 1201181857 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-022 REV# 8.

Calibration Information:

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

27

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: 171450001 (9520-04-IC).

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 Product: LSC, Tritium Dist, Solid-HTD2,ALL FSS Analytical Method: EPA 906.0 Modified Analytical Batch Number: 567994 28

Sample ID Client ID 171459018 9530-0002-005F 171459019 9530-0002-008F 1201181977 Method Blank (MB) 1201181978 171454026(9530-0004-012F) Sample Duplicate (DUP) 1201181979 171454026(9530-0004-012F) Matrix Spike (MS) 1201181980 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 (QC) Information:

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

Designated QC The following sample was used for QC: 171454026 (9530-0004-012F).

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.

29

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 361821 was generated due to Container scanning event for custody missed. 1. The analyst did not scan the samples 171454026, 171454027, 171459018, and 171459019 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.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint C14, Solid AII,FSS Analytical Method: EPA EERF C-01 Modified Analytical Batch Number: 567937 Sample ID Client ID 171459018 9530-0002-005F 171459019 9530-0002-008F 1201181862 Method Blank (MB) 1201181863 171454026(9530-0004-012F) Sample Duplicate (DUP) 1201181864 171454026(9530-0004-012F) Matrix Spike (MS) 1201181865 Laboratory Control Sample (LCS)

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

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 30

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: 171454026 (9530-0004-012F).

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.

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:

31

Reviewer/Date:

Y'ýwl*-c?4cj 32

General Engineering Laboratories NCR Report No.: 361821 Form GEL-NCR Revision No.:

Rev. 06/05 COMPANY -WIDE NONCONFORMANCE REPORT Mo.Day Yr. Division: Quality Criteria: Type:

21-SEP-06 Radiochemistry Specifications Process Instrument Type: Test / Method: Matrix Type: Client Code:

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

567994 See Below Potentially affected work order(s)(SDG): 171454(MSR#06-1236),171459(MSR#06-1237)

Application Issues:

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

Nonconformance

Description:

1. The analyst did not scan the samples 171454026, 171454027, 1. The error has been corrected and the analyst has been instructed on the 171459018, and 171459019 into the batch prior to analysis, however the proper scanning procedures.

samples did remain in their custody at all times.

Originator's Name: Data Validator/Group Leader:

Amy Scott 21-SEP-06 Melanie Aycock 22-SEP-06 Quality Review:

Director:

Page 1 33

SAMPLE DATA

SUMMARY

34

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Report for YANKOO 1 Connecticut Yankee Atomic Power Co.

Client SDG: MSR#06-1237 GEL Work Order: 171459 The Qualifiers in this report are defined as follows:

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

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

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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-001F Project: YANK01204 Sample ID: 171459001 Client ID: YANKOOI Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 1.52%

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 0.451 +/-0.116 0.0459 +/-0.116 0.100 pCi/g MJHI 09/21/06 1626 569470 1 Americium-241 U 0.00827 +/-0.0741 0.0639 +/-0.0741 0.132 pCi/g Bismuth-212 0.385 +/-0.170 0.107 +/-0.170 0.231 pCi/g Bismuth-214 0.247 +/-0.058 0.0301 +/-0.058 0.0637 pCi/g Cesium-134 U 0.00966 +/-0.0198 0.0179 +/-0.0198 0.0383 pCi/g Cesium-137 0.0773 +/-0.0359 0.0144 +/-0.0359 0.0308 pCi/g Cobalt-60 U 0.002 +/-0.0191 0.014 +/-0.0191 0.0313 pCi/g Europium- 152 U -0.00753 +/-0.0423 0.0367 +/-0.0423 0.0774 pCi/g Europium- 154 U -0.00523 +/-0.0556 0.0461 +/-0.0556 0.101 pCi/g Europium-155 U 0.00174 +/-0.0463 0.0438 +/-0.0463 0.0906 pCi/g Lead-212 0.369 +/-0.0425 0.025 +/-0.0425 0.0519 pCi/g Lead-214 0.271 +/-0.0651 0.026 +/-0.0651 0.0549 pCi/g Manganese-54 U-0.000155 +/-0.0163 0.0142 +/-0.0163 0.0306 pCi/g Niobium-94 U 0.00779 +/-0.0158 0.0144 +/-0.0158 0.0307 pCi/g Potassium-40 10.3 +/-0.745 0.117 +/-0.745 0.266 pCi/g Radium-226 0.247 +/-0.058 0.0301 +/-0.058 0.0637 pCi/g Silver-108m U -0.0111 +/-0.0159 0.013 +/-0.0159 0.0276 pCi/g Thallium-208 0.151 +/-0.036 0.013 +/-0.036 0.0279 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 MXP2 09/12/06 1824 567635 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 36

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-00IF Proiect: YANKO1204 Sample ID: 171459001 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.

37

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-002F Project: YANK01204 Sample ID: 171459002 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 6.13%

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 0.500 +/-0.182 0.0725 +/-0.182 0.155 pCi/g MJH1 09/21/06 1627 569470 1 Americium-241 U -0.00236 +/-0.0293 0.0269 +/-0.0293 0.0555 pCi/g Bismuth-212 0.328 +/-0.235 0.155 +/-0.235 0.328 pCi/g Bismuth-214 0.388 +/-0.0985 0.0372 +/-0.0985 0.0785 pCi/g Cesium-134 U 0.0464 +/-0.0361 0.0224 +/-0.0361 0.0476 pCi/g Cesium-137 0.0932 +/-0.0521 0.0196 +/-0.0521 0.0416 pCi/g Cobalt-60 U 0.00115 +/-0.0214 0.0182 +/-0.0214 0.040 pCi/g Europium- 152 U 0.00596 +/-0.0537 0.047 +/-0.0537 0.0984 pCi/g Europium- 154 U -0.0393 +/-0.0791 0.0537 +/-0.0791 0.117 pCi/g Europium- 155 U 0.090 +/-0.0892 0.0465 +/-0.0892 0.0958 pCi/g Lead-212 0.371 +/-0.0846 0.028 +/-0.0846 0.0581 pCi/g Lead-214 0.499 +/-0.0773 0.0331 +/-0.0773 0.0695 pCi/g Manganese-54 U -0.0266 +/-0.027 0.0175 +/-0.027 0.0375 pCi/g Niobium-94 U -0.00251 +/-0.021 0.018 +/-0.021 0.0381 pCi/g Potassium-40 8.74 +/-0.788 0.180 +/-0.788 0.395 pCi/g Radium-226 0.388 +/-0.0985 0.0372 +/-0.0985 0.0785 pCi/g Silver- 108m U 0.00638 +/-0.0182 0.0169 +/-0.0182 0.0356 pCi/g Thallium-208 0.158 +/-0.0442 0.0183 +/-0.0442 0.0387 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 MXP2 09/12/06 1824 567635 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 38

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-002F Project: YANKO1204 Sample ID: 171459002 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-003F Project: YANK01204 Sample ID: 171459003 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 3.52%

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 0.572 +/-0.116 0.0424 +/-0.116 0.0905 pCi/g MJHI 09/21/06 1627 569470 1 Americium-241 U 0.0285 +/-0.0975 0.0703 +/-0.0975 0.146 pCi/g Bismuth-212 0.305 +/-0.190 0.0932 +/-0.190 0.198 pCi/g Bismuth-214 0.274 +/-0.0724 0.025 +/-0.0724 0.0524 pCi/g Cesium-134 UI 0.00 +/-0.0238 0.0144 +/-0.0238 0.0304 pCi/g Cesium-137 0.0315 +/-0.0163 0.0105 +/-0.0163 0.0224 pCi/g Cobalt-60 U -0.00858 +/-0.0125 0.00987 +/-0.0125 0.0219 pCi/g Europium-152 U -0.00353 +/-0.0337 0.0303 +/-0.0337 0.0636 pCi/g Europium-154 U -0.0301 +/-0.0424 0.0343 +/-0.0424 0.0745 pCi/g Europium-155 U 0.0198 +/-0.0419 0.0399 +/-0.0419 0.0828 pCi/g Lead-212 0.429 +/-0.0402 0.0185 +/-0.0402 0.0384 pCi/g Lead-214 0.347 +/-0.0595 0.0224 +/-0.0595 0.0469 pCi/g Manganese-54 U 0.0134 +/-0.0145 0.0121 +/-0.0145 0.0257 pCi/g Niobium-94 U 0.00641 +/-0.0126 0.0115 +/-0.0126 0.0243 pCi/g Potassium-40 8.78 +/-0.606 0.107 +/-0.606 0.235 pCi/g Radium-226 0.274 +/-0.0724 0.025 +/-0.0724 0.0524 pCi/g Silver-108m U 0.000801 +/-0.0111 0.00985 +/-0.0111 0.0208 pCi/g Thallium-208 0.131 +/-0.0285 0.0116 +/-0.0285 0.0245 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-003F Project: YANKO 1204 Sample ID: 171459003 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-004F Project: YANKO 1204 Sample ID: 171459004 Client ID: YANKOO Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 9.54%

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 0.504 +/-0.120 0.0472 +/-0.120 0.102 pCi/g MJH1 09/21/06 1628 569470 1 Americium-241 U -0.00986 +/-0.0469 0.0393 +/-0.0469 0.0812 pCi/g Bismuth-212 U 0.173 +/-0.285 0.119 +/-0.285 0.253 pCi/g Bismuth-214 0.333 +/-0.0738 0.0304 +/-0.0738 0.0642 pCi/g Cesium-134 U 0.0143 +/-0.0199 .0.018 +/-0.0199 0.0384 pCi/g Cesium-137 0.0855 +/-0.0273 0.0144 +/-0.0273 0.0308 pCi/g Cobalt-60 U 0.0117 +/-0.0153 0.0145 +/-0.0153 0.0319 pCi/g Europium-152 U -0.0175 +/-0.0411 0.0366 +/-0.0411 0.077 pCi/g Europium-154 U -0.00142 +/-0.0482 0.0416 +/-0.0482 0.0914 pCi/g Europium-155 U 0.0134 +/-0.0433 0.0403 +/-0.0433 0.0833 pCi/g Lead-212 0.469 +/-0.0589 0.0218 +/-0.0589 0.0454 pCi/g Lead-214 0.354 +/-0.0777 0.0263 +/-0.0777 0.0554 pCi/g Manganese-54 U -0.0095 +/-0.0201 0.014 +/-0.0201 0.0302 pCi/g Niobium-94 U 0.00406 +/-0.0152 0.0134 +/-0.0152 0.0286 pCi/g Potassium-40 10.8 +/-0.950 0.109 +/-0.950 0.249 pCi/g Radium-226 0.333 +/-0.0738 0.0304 +/-0.0738 0.0642 pCi/g Silver-108m U -0.00126 +/-0.0151 0.0135 +/-0.0151 0.0284 pCi/g Thallium-208 0.164 +/-0.0408 0.0131 +/-0.0408 0.0281 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 MXP2 09/12/06 1824 567635 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 42

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-004F Project: YANK01204 Sample ID: 171459004 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-004FS Proiect: YANKO 1204 Sample ID: 171459005 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 9.59%

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 0.519 +/-0.128 0.038 +/-0.128 0.0815 pCi/g MJH1 09/21/06 1628 569470 1 Americium-241 U -0.0121 +/-0.0518 0.0484 +/-0.0518 0.0998 pCi/g Bismuth-212 0.504 +/-0.185 0.0827 +/-0.185 0.176 pCi/g Bismuth-214 0.365 +/-0.0732 0.0232 +/-0.0732 0.0487 pCi/g Cesium-134 UI 0.00 +/-0.0184 0.0147 +/-0.0184 0.031 pCi/g Cesium-137 0.0939 +/-0.0346 0.012 +/-0.0346 0.0253 pCi/g Cobalt-60 U 0.00569 +1-0.0135 0.0118 +/-0.0135 0.0256 pCi/g Europium-152 U -0.00784 +/-0.0342 0.0303 +/-0.0342 0.0634 pCi/g Europium-154 U -0.0133 +/-0.0403 0.0325 +/-0.0403 0.0705 pCi/g Europium-155 U 0.0437 +/-0.0493 0.0387 +/-0.0493 0.0799 pCi/g Lead-212 0.479 +/-0.0449 0.0187 +/-0.0449 0.0388 pCi/g Lead-214 0.432 +/-0.0597 0.0217 +/-0.0597 0.0455 pCi/g Manganese-54 U 0.0131 +/-0.0131 0.0122 +/-0.0131 0.0259 pCi/g Niobium-94 U 0.00559 +/-0.0118 0.0108 +/-0.0118 0.0228 pCi/g Potassium-40 10.7 +/-0.654 0.0866 +/-0.654 0.193 pCi/g Radium-226 0.365 +/-0.0732 0.0232 +/-0.0732 0.0487 pCi/g Silver-108m U 0.000866 +/-0.0121 0.0106 +/-0.0121 0.0224 pCi/g Thallium-208 0.126 +/-0.0267 0.0107 +/-0.0267 0.0227 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-004FS Project: YANK01204 Sample ID: 171459005 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.

45

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

. . .T T . . .. . .

eT i..

Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-006F Proiect: YANKO 1204 Sample ID: 171459006 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 18.8%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.784 +/-0.209 0.0639 +/-0.209 0.128 pCi/g MJH1 09/21/06 1642 569470 1 Americium-241 U 0.0557 +/-0.0851 0.0661 +/-0.0851 0.132 pCi/g Bismuth-212 0.526 +/-0.370 0.154 +/-0.370 0.308 pCi/g Bismuth-214 0.625 +/-0.114 0.040 +/-0.114 0.0799 pCi/g Cesium-134 U 0.0488 +/-0.0256 0.0253 +/-0.0256 0.0506 pCi/g Cesium-137 0.207 +/-0.0505 0.0224 +/-0.0505 0.0447 pCi/g Cobalt-60 U -0.00697 +/-0.0277 0.0222 +/-0.0277 0.0443 pCi/g Europium-152 U 0.0199 +/-0.0732 0.0552 +/-0.0732 0.110 pCi/g Europium-154 U 0.0327 +/-0.0813 0.0702 +/-0.0813 0.140 pCi/g Europium-155 U -0.0147 +/-0.0689 0.0576 +/-0.0689 0.115 pCi/g Lead-212 0.827 +/-0.0965 0.0315 +/-0.0965 0.063 pCi/g Lead-214 0.710 +/-0.114 0.0374 +/-0.114 0.0747 pCi/g Manganese-54 U 0.013 +/-0.0256 0.020 +/-0.0256 0.0399 pCi/g Niobium-94 U 0.00787 +/-0.0236 0.0207 +/-0.0236 0.0414 pCi/g Potassium-40 12.1 +/-1.20 0.189 +/-1.20 0.378 pCi/g Radium-226 0.625 +/-0.114 0.040 +/-0.114 0.0799 pCi/g Silver-108m U 0.0207 +/-0.0219 0.0195 +/-0.0219 0.039 pCi/g Thallium-208 0.262 +/-0.0524 0.0205 +/-0.0524 0.041 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-006F Project: YANKO 1204 Sample ID: 171459006 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 +I-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-007F Proiect: YANKO 1204 Sample ID: 171459007 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 8.32%

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 0.488 +/-0.143 0.0439 +/-0.143 0.0878 pCi/g MJHI 09/21/06 1643 569470 1 Americium-241 U 0.0603 +/-0.0678 0.0592 +/-0.0678 0.118 pCi/g Bismuth-212 0.365 +/-0.205 0.112 +/-0.205 0.224 pCi/g Bismuth-214 0.292 +/-0.0738 0.028 +/-0.0738 0.056 pCi/g Cesium-134 U 0.0241 +/-0.0215 0.0199 +/-0.0215 0.0397 pCi/g Cesium-137 0.0769 .+/-0.0288 0.0155 +/-0.0288 0.0311 pCi/g Cobalt-60 U 0.00992 +/-0.0178 0.0162 +/-0.0178 0.0323 pCi/g Europium-152 U -0.0422 +1-0.0551 0.0393 +/-0.0551 0.0786 pCi/g Europium-154 U-0.000383 +/-0.0659 0.0495 +/-0.0659 0.099 pCi/g Europium-155 U 0.0536 +/-0.0595 0.0413 +/-0.0595 0.0825 pCi/g Lead-212 0.466 +/-0.0613 0.0229 +/-0.0613 0.0457 pCi/g Lead-214 0.393 +/-0.0676 0.0281 +/-0.0676 0.0563 pCi/g Manganese-54 U 0.0241 +/-0.0167 0.0124 +/-0.0167 0.0248 pCi/g Niobium-94 U 0.025 +/-0.0187 0.0139 +/-0.0187 0.0277 pCi/g Potassium-40 11.1 +/-0.986 0.0977 +/-0.986 0.195 pCi/g Radium-226 0.292 +/-0.0738 0.028 +/-0.0738 0.056 pCi/g Silver-108m U 0.00346 +/-0.0159 0.0144 +/-0.0159 0.0287 pCi/g Thallium-208 0.163 +/-0.0381 0.0134 +/-0.0381 0.0267 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-007F Project: YANKO1204 Sample ID: 171459007 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-009F Project: YANK01204 Sample ID: 171459008 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 4.06%

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 0.368 +/-0.168 0.0729 +/-0.168 0.146 pCi/g MJH1 09/21/06 1643 569470 1 Americium-241 U 0.0144 +/-0.0285 0.0241 +/-0.0285 0.0481 pCi/g Bismuth-212 0.409 +/-0.274 0.133 +/-0.274 0.266 pCi/g Bismuth-214 0.248 +/-0.0886 0.0359 +/-0.0886 0.0718 pCi/g Cesium-134 U 0.0382 +/-0.0307 0.0232 +/-0.0307 0.0464 pCi/g Cesium-137 0.0449 +/-0.0329 0.0176 +/-0.0329 0.0351 pCi/g Cobalt-60 U 0.0151 +/-0.0254 0.0231 +/-0.0254 0.0462 pCi/g Europium- 152 U 0.017 +/-0.066 0.0419 +/-0.066 0.0838 pCi/g Europium- 154 U -0.00692 +/-0.0884 0.0741 +/-0.0884 0.148 pCi/g Europium- 155 U 0.033 +/-0.0407 0.0383 +/-0.0407 0.0765 pCi/g Lead-212 0.359 +/-0.0541 0.0236 +/-0.0541 0.0472 pCi/g Lead-214 0.297 +/-0.0678 0.0298 +/-0.0678 0.0595 pCi/g Manganese-54 U 0.0141 +/-0.0232 0.0214 +/-0.0232 0.0428 pCi/g Niobium-94 U -0.00397 +/-0.0183 0.0155 +/-0.0183 0.0311 pCi/g Potassium-40 8.95 +/-0.885 0.168 +/-0.885 0.335 pCi/g Radium-226 0.248 +/-0.0886 0.0359 +/-0.0886 0.0718 pCi/g Silver-1 08m U -0.00493 +/-0.0168 0.0144 +/-0.0168 0.0289 pCi/g Thallium-208 0.113 +/-0.0345 0.0159 +/-0.0345 0.0318 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 MXP2 09/12/06 1824 567635 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 50

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-009F Project: YANK01204 Sample ID: 171459008 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-01 OF Proiect: YANKO 1204 Sample ID: 171459009 Client ID: YANKOO Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 18.1%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.655 +/-0.137 0.0541 +/-0.137 0.118 pCi/g MJH1 09/21/06 1945 569470 1 Americium-241 U -0.0227 +/-0.123 0.0821 +/-0.123 0.170 pCi/g Bismuth-212 0.339 +/-0.219 0.141 +/-0.219 0.301 pCi/g Bismuth-214 0.525 -F/-0.0722 0.0277 +/-0.0722 0.0594 pCi/g Cesium- 134 U 0.0425 F/-0.0274 0.021 +/-0.0274 0.0447 pCi/g Cesium- 137 0.196 F/-0.0367 0.0176 +/-0.0367 0.0374 pCi/g Cobalt-60 U -0.00176 +/-0.0227 0.0188 +/-0.0227 0.0414 pCi/g Europium-152 U -0.0336 +/-0.0495 0.039 +/-0.0495 0.0825 pCi/g Europium- 154 U -0.0168 +/-0.069 0.0481 +/-0.069 0.106 pCi/g Europium- 155 U 0.0684 +/-0.0523 0.0492 +/-0.0523 0.102 pCi/g Lead-212 0.568 +/-0.0649 0.0358 +/-0.0649 0.0737 pCi/g Lead-214 0.562 F/-0.0786 0.0301 +/-0.0786 0.0635 pCi/g Manganese-54 U 0.00579 F/-0.0203 0.0172 +/-0.0203 0.037 pCi/g Niobium-94 U 0.00715 +/-0.0186 0.0161 +/-0.0186 0.0343 pCi/g Potassium-40 10.8 +/-0.826 0.151 +/-0.826 0.340 pCi/g Radium-226 0.525 F/-0.0722 0.0277 +/-0.0722 0.0594 pCi/g Silver- 108m U 0.0151 +/-0.0163 0.0151 +/-0.0163 0.0318 pCi/g Thallium-208 0.219 +/-0.0446 0.0156 +/-0.0446 0.0333 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 MXP2 09/12/06 1824 567635 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 52

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-010F Project: YANK0 1204 Sample ID: 171459009 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 ht Preparation or preservation holding time was exceeded The above sample is reported on a dry weight basis.

53

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-011F Project: YANKO 1204 Sample ID: 171459010 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 8.68%

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 0.433 +/-0.165 0.0742 +/-0.165 0.159 pCi/g MJH1 09/21/06 1945 569470 1 Americium-241 U 0.00172 +/-0.0293 0.0266 +/-0.0293 0.0549 pCi/g Bismuth-212 0.606 +/-0.406 0.153 +/-0.406 0.327 pCi/g Bismuth-214 0.440 +/-0.0885 0.0365 +/-0.0885 0.0773 pCi/g Cesium-134 UI 0.00 +/-0.033 0.0273 +/-0.033 0.0576 pCi/g Cesium-137 0.0593 +/-0.0456 0.022 +/-0.0456 0.0466 pCi/g Cobalt-60 U 0.00362 +/-0.0269 0.0229 +/-0.0269 0.0497 pCi/g Europium-152 U -0.051 +/-0.0616 0.0505 +/-0.0616 0.106 pCi/g Europium-154 U 0.0104 +/-0.0804 0.0688 +/-0.0804 0.148 pCi/g Europium-155 U -0.0393 +/-0.0497 0.0413 +/-0.0497 0.0857 pCi/g Lead-212 0.398 +/-0.0657 0.0354 +/-0.0657 0.0728 pCi/g Lead-214 0.453 +/-0.0831 0.0343 +/-0.0831 0.072 pCi/g Manganese-54 U 0.00239 +/-0.0256 0.0217 +/-0.0256 0.046 pCi/g Niobium-94 U 0.0044 +/-0.0217 0.0189 +/-0.0217 0.0401 pCi/g Potassium-40 10.3 +/-0.927 0.174 +/-0.927 0.386 pCi/g Radium-226 0.440 +/-0.0885 0.0365 +/-0.0885 0.0773 pCi/g Silver-108m U -0.00291 +/-0.019 0.0171 +/-0.019 0.036 pCi/g Thallium-208 0.180 '+/-0.0409 0.0188 +/-0.0409 0.0398 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 MXP2 09/12/06 1824 567635 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 54

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-011F Project: YANKO 1204 Sample ID: 171459010 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.

55

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-012F Project: YANKO 1204 Sample ID: 171459011 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 7.78%

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 0.436 +/-0.113 0.0398 +/-0.113 0.0852 pCi/g MJH1 09/21/06 1946 569470 1 Americium-241 U -0.0391 +/-0.0895 0.071 +/-0.0895 0.147 pCi/g Bismuth-212 0.343 +/-0.162 0.087 +/-0.162 0.185 pCi/g Bismuth-214 0.363 +/-0.057 0.0226 +/-0.057 0.0476 pCi/g Cesium-134 Ut 0.00 +/-0.0194 0.0147 +/-0.0194 0.031 pCi/g Cesium- 137 0.0616 +/-0.0222 0.0118 +/-0.0222 0.0249 pCi/g Cobalt-60 U 0.00174 +/-0.0141 0.0124 +/-0.0141 0.0268 pCi/g Europium- 152 U 0.00393 +/-0.035 0.0321 +/-0.035 0.067 pCi/g Europium-154 U 0.0347 +/-0.045 0.0416 +/-0.045 0.0887 pCi/g Europium- 155 U 0.0222 +/-0.0425 0.0409 +/-0.0425 0.0846 pCi/g Lead-212 0.485 +/-0.0407 0.0187 +/-0.0407 0.0388 pCi/g Lead-214 0.424 +/-0.0582 0.0223 +/-0.0582 0.0467 pCi/g Manganese-54 UI 0.00 +/-0.0193 0.00683 +/-0.0193 0.0151 pCi/g Niobium-94 U 0.00144 +/-0.0124 0.0112 +/-0.0124 0.0236 pCi/g Potassium-40 11.3 +/-0.604 0.0962 +/-0.604 0.213 pCi/g Radium-226 0.363 +/-0.057 0.0226 +/-0.057 0.0476 pCi/g Silver- 108m U 0.0108 +1-0.0115 0.0108 +/-0.0115 0.0227 pCi/g Thallium-208 0.151 +/-0.0266 0.0119 +/-0.0266 0.025 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project' Soils PO# 002332 Client Sample ID: 9530-0002-012F Project: YANK01204 Sample ID: 171459011 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-013F Proiect: YANKO 1204 Sample ID: 171459012 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 7.13%

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 0.554 +/-0.108 0.0405 +/-0.108 0.0865 pCi/g MJH1 09/21/06 1946 569470 1 Americium-241 U -0.0208 +/-0.0507 0.0469 +/-0.0507 0.0969 pCi/g Bismuth-212 0.298 +/-0.171 0.0849 +/-0.171 0.181 pCi/g Bismuth-214 0.342 +/-0.063 0.023 +/-0.063 0.0484 pCi/g Cesium-134 U 0.025 +/-0.0141 0.0139 +/-0.0141 0.0294 pCi/g Cesium-137 0.0804 +/-0.0289 0.0119 +/-0.0289 0.0251 pCi/g Cobalt-60 U -0.00478 +/-0.0134 0.0107 +/-0.0134 0.0234 pCi/g Europium- 152 U -0.0062 +/-0.0399 0.0311 +/-0.0399 0.065 pCi/g Europium- 154 U 0.0211 +/-0.0364 0.0323 +/-0.0364 0.0702 pCi/g Europium- 155 U 0.0169 +/-0.0416 0.0384 +/-0.0416 0.0794 pCi/g Lead-212 0.523 +/-0.0453 0.0178 +/-0.0453 0.037 pCi/g Lead-214 0.420 +/-0.0625 0.0232 +/-0.0625 0.0484 pCi/g Manganese-54 U -1.210E- +/-0.0133 0.0116 +/-0.0133 0.0247 pCi/g 05 Niobium-94 U-0.000509 +/-0.0119 0.0105 +/-0.0119 0.0223 pCi/g Potassium-40 10.4 +/-0.621 0.0993 +/-0.621 0.219 pCi/g Radium-226 0.342 +/-0.063 0.023 +/-0.063 0.0484 pCi/g Silver-108m UI 0.00 +/-0.033 0.00993 +/-0.033 0.021 pCi/g Thallium-208 0.162 +/-0.0326 0.0113 +/-0.0326 0.0238 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-013F Project: YANK01204 Sample ID: 171459012 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.

59

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-014F Proiect: YANK0 1204 Sample ID: 171459013 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 3.4%

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 0.533 +/-0.157 0.0731 +/-0.157 0.146 pCi/g MJH1 09/21/06 1954 569470 1 Americium-241 U -0.0156 +/-0.031 0.0246 +/-0.031 0.0492 pCi/g Bismuth-212 0.418 +/-0.212 0.149 +/-0.212 0.297 pCi/g Bismuth-214 0.256 +/-0.0872 0.0344 +/-0.0872 0.0687 pCi/g Cesium-134 U 0.0389 +/-0.0341 0.0249 +/-0.0341 0.0498 pCi/g Cesium-137 0.0422 +/-0.0325 0.0194 +/-0.0325 0.0388 pCi/g Cobalt-60 U -0.00202 +/-0.0317 0.0225 +/-0.0317 0.0449 pCi/g Europium-152 U -0.0557 +/-0.0634 0.0418 +/-0.0634 0.0836 pCi/g Europium-154 U -0.088 +/-0.0852 0.0622 +/-0.0852 0.124 pCi/g Europium-155 U 0.00658 +/-0.0424 0.0387 +/-0.0424 0.0773 pCi/g Lead-212 0.372 +/-0.0581 0.0249 +/-0.0581 0.0498 pCi/g Lead-214 0.309 +/-0.083 0.0305 +/-0.083 0.0609 pCi/g Manganese-54 U 0.000962 +/-0.0219 0.0192 +/-0.0219 0.0384 pCi/g Niobium-94 U 0.00419 +/-0.0202 0.0182 +/-0.0202 0.0364 pCi/g Potassium-40 10.2 +/-0.929 0.167 +/-0.929 0.333 pCi/g Radium-226 0.256 +/-0.0872 0.0344 +/-0.0872 0.0687 pCi/g Silver-108m U 0.0134 +/-0.019 0.0176 +/-0.019 0.0351 pCi/g Thallium-208 0.142 +/-0.0403 0.0176 +/-0.0403 0.0352 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-014F Project: YANKO 1204 Sample ID: 171459013 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-014FS Project: YANKO 1204 Sample ID: 171459014 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 4.41%

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 0.393 +/-0.146 0.0636 +/-0.146 0.142 pCi/g MJH1 09/22/06 0604 569470 1 Americium-241 U -0.0873 +/-0.129 0.0863 +/-0.129 0.182 pCi/g Bismuth-212 UI 0.00 +/-0.443 0.124 +/-0.443 0.275 pCi/g Bismuth-214 0.243 +/-0.0728 0.0327 +/-0.0728 0.0714 pCi/g Cesium-134 U 0.0183 +/-0.0235 0.0219 +/-0.0235 0.048 pCi/g Cesium-137 U 0.0517 +/-0.0242 0.0251 +/-0.0242 0.0537 pCi/g Cobalt-60 U -0.00378 +/-0.022 0.0181 +/-0.022 0.0418 pCi/g Europium-152 U -0.0145 +/-0.0514 0.0431 +/-0.0514 0.093 pCi/g Europium-154 U 0.0636 +/-0.0692 0.0668 +/-0.0692 0.149 pCi/g Europium-155 U 0.0133 +/-0.0504 0.0488 +/-0.0504 0.103 pCi/g Lead-212 0.377 +/-0.059 0.0339 +/-0.059 0.071 pCi/g Lead-214 0.440 +/-0.0813 0.0307 +/-0.0813 0.0663 pCi/g Manganese-54 U 0.0159 +/-0.0192 0.0181 +/-0.0192 0.040 pCi/g Niobium-94 U 0.00965 +/-0.0179 0.0165 +/-0.0179 0.036 pCi/g Potassium-40 9.43 +/-0.927 0.130 +/-0.927 0.315 pCi/g Radium-226 0.243 +/-0.0728 0.0327 +/-0.0728 0.0714 pCi/g Silver-108m U 0.00287 +/-0.018 0.0148 +/-0.018 0.0321 pCi/g Thallium-208 0.153 +/-0.0356 0.0159 +/-0.0356 0.0351 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006 Contact;, Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-014FS Project: YANKO 1204 Sample ID: 171459014 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-015F Proiect: YANKO 1204 Sample ID: 171459015 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 4.29%

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 Jngrowth Waived Actinium-228 0.402 +/-0.117 0.0392 +/-0.117 0.0848 pCi/g MJH1 09/22/06 0604 569470 1 Americium-241 U 0.024 +/-0.0836 0.0778 +/-0.0836 0.160 pCi/g Bismuth-212 U 0.161 +/-0.169 0.099 +/-0.169 0.210 pCi/g Bismuth-214 0.234 +/-0.0594 0.0243 +/-0.0594 0.0512 pCi/g Cesium-134 UI 0.00 +/-0.0195 0.0152 +/-0.0195 0.0322 pCi/g Cesium-137 0.0482 +/-0.0234 0.0123 +/-0.0234 0.0262 pCi/g Cobalt-60 U -0.00424 +/-0.0146 0.0118 +/-0.0146 0.0261 pCi/g Europium-152 U 0.011 +/-0.0358 0.0324 +/-0.0358 0.0678 pCi/g Europium-154 U -0.0347 +/-0.045 0.0345 +/-0.045 0.0757 pCi/g Europium-155 U 0.0302 +/-0.0576 0.0356 +/-0.0576 0.0735 pCi/g Lead-212 0.355 +/-0.048 0.0187 +/-0.048 0.0388 pCi/g Lead-214 0.336 +/-0.0604 0.0229 +/-0.0604 0.0479 pCi/g Manganese-54 U 0.0136 +/-0.0136 0.0128 +/-0.0136 0.0273 pCi/g Niobium-94 U 0.00358 +/-0.0131 0.0118 +/-0.0131 0.0251 pCi/g Potassium-40 11.2 +/-0.973 0.100 +/-0.973 0.226 pCi/g Radium-226 0.234 +/-0.0594 0.0243 +/-0.0594 0.0512 pCi/g Silver-108m U 0.00853 +/-0.012 0.011 +/-0.012 0.0232 pCi/g Thallium-208 0.142 +/-0.0353 0.0122 +/-0.0353 0.0259 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 MXP2 09/12/06 1824 567635 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-015F Proiect: YANK01204 Sample ID: 171459015 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.

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 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

"-r"..................

of Analyvis_1 *-*

Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-016F Project: YANK0 1204 Sample ID: 171459016 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 9.29%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis GammaSolid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.359 +/-0.160 0.0961 +/-0.160 0.210 pCi/g MJH 1 09/22/06 0605 569470 1 Americium-241 U 0.0236 +/-0.0374 0.0335 +/-0.0374 0.0697 pCi/g Bismuth-212 0.617 +/-0.299 0.210 +/-0.299 0.455 pCi/g Bismuth-214 0.472 +/-0.116 0.0407 +/-0.116 0.0889 pCi/g Cesium-134 U 0.0201 +/-0.0232 0.027 +/-0.0232 0.0593 pCi/g Cesium-137 0.0911 +/-0.0449 0.0209 +/-0.0449 0.0462 pCi/g Cobalt-60 U 0.000777 +/-0.0247 0.0211 +/-0.0247 0.0491 pCi/g Europium-152 U 0.0341 +/-0.0657 0.056 +/-0.0657 0.120 pCi/g Europium-154 U 0.158 +/-0.0922 0.0742 +/-0.0922 0.167 pCi/g Europium-155 U -0.0199 +/-0.0573 0.052 +/-0.0573 0.109 pCi/g Lead-212 0.414 +/-0.0661 0.0339 +/-0.0661 0.0713 pCi/g Lead-214 0.327 +/-0.0801 0.0445 +/-0.0801 0.0946 pCi/g Manganese-54 U 0.0142 +/-0.0276 0.0248 +/-0.0276 0.0543 pCi/g Niobium-94 U 0.00776 +/-0.0242 0.0215 +/-0.0242 0.0469 pCi/g Potassium-40 10.1 +/-1.18 0.162 +/-1.18 0.394 pCi/g Radium-226 0.472 +/-0.116 0.0407 +/-0.116 0.0889 pCi/g Silver-108m U -0.003 +/-0.0247 0.0191 +/-0.0247 0.0414 pCi/g Thallium-208 0.173 +/-0.0582 0.0207 +/-0.0582 0.0455 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-016F Proiect: YANKO 1204 Sample ID: 171459016 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-017F Project: YANK01204 Sample ID: 171459017 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 3.38%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis GammaSolid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.485 +/-0.156 0.0625 +/-0.156 0.139 pCi/g MJHI 09/22/06 0701 569470 1 Americium-241 U 0.0291 +/-0.0904 0.0656 +/-0.0904 0.138 pCi/g Bismuth-212 U 0.136 +/-0.213 0.125 +/-0.213 0.278 pCi/g Bismuth-214 0.285 +/-0.0774 0.0351 +/-0.0774 0.0762 pCi/g Cesium- 134 U 0.00791 +/-0.0225 0.0203 +/-0.0225 0.0447 pCi/g Cesium-137 UI 0.00 +/-0.0324 0.015 +/-0.0324 0.0334 pCi/g Cobalt-60 UI 0.00 +/-0.0366 0.0201 +/-0.0366 0.0458 pCi/g Europium- 152 U -0.00664 +/-0.0509 0.0432 +/-0.0509 0.0931 pCi/g Europium-154 U -0.0121 +/-0.0594 0.0498 +/-0.0594 0.115 pCi/g Europium-155 U 0.0449 +/-0.0494 0.0487 +/-0.0494 0.102 pCi/g Lead-212 0.278 +/-0.0686 0.0345 +/-0.0686 0.0721 pCi/g Lead-214 0.265 +/-0.0735 0.0308 +/-0.0735 0.0665 pCi/g Manganese-54 U 0.0173 +/-0.0205 0.0195 +/-0.0205 0.0427 pCi/g Niobium-94 U 0.000127 +/-0.017 0.0148 +/-0.017 0.0327 pCi/g Potassium-40 10.4 +/-0.956 0.165 +/-0.956 0.386 pCi/g Radium-226 0.285 +/-0.0774 0.0351 +/-0.0774 0.0762 pCi/g Silver-108m UI 0.00 +/-0.0399 0.0155 +/-0.0399 0.0337 pCi/g Thallium-208 0.118 +/-0.0452 0.0178 +/-0.0452 0.0388 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 MXP2 09/12/06 1824 567635 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 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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-017F Project: YANKO 1204 Sample ID: 171459017 Client ID: YANKOOl 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.

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-005F Proiect: YANKO 1204 Sample ID: 171459018 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 6.68%

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 0.051 +/-0.0809 0.0257 +/-0.0811 0.129 pCi/g JASI 09/15/06 1152 567824 1 Curium-242 U -0.0142 +/-0.0614 0.0377 +/-0.0615 0.156 pCi/g Curium-243/244 U 0.0298 +/-0.0838 0.0514 +/-0.0839 0.180 pCi/g Alphaspec Pu, Solid-ALL FSS Plutonium-238 U -0.0575 +/-0.0426 0.0812 +/-0.043 0.255 pCi/g JASI 09/16/06 0952 567825 2 Plutonium-239/240 U -0.041 +/-0.036 0.0686 +/-0.0362 0.230 pCi/g Liquid Scint Pu241, Solid-ALL FSS Plutonium-241 U 0.00 +/-12.0 10.1 +/-12.0 21.1 pCi/g JAS1 09/17/06 0634 567826 3 Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.344 +/-0.193 0.0932 +/-0.193 0.201 pCi/g MJHI 09/22/06 0702 569470 4 Americium-241 U 0.0183 +/-0.035 0.0329 +/-0.035 0.0683 pCi/g Bismuth-212 U 0.357 +/-0.393 0.179 +/-0.393 0.387 pCi/g Bismuth-214 0.335 +/-0.139 0.0466 +/-0.139 0.0996 pCi/g Cesium-134 U 0.0515 +1--0.0559 0.0332 +/-0.0559 0.0707 pCi/g Cesium-137 0.121 +1--0.0547 0.0253 +/-0.0547 0.0542 pCi/g Cobalt-60 U -0.00858 +1--0.0323 0.0263 +/-0.0323 0.0581 pCi/g Europium- 152 U 0.030 +1--0.0619 0.0557 +/-0.0619 0.118 pCi/g Europium- 154 U 0.00678 +1--0.0873 0.0747 +/-0.0873 0.165 pCi/g Europium- 155 U 0.0288 +1--0.0599 0.0538 +/-0.0599 0.112 pCi/g Lead-212 0.318 +1--0.0646 0.0429 +/-0.0646 0.0888 pCi/g Lead-214 0.300 +1--0.0808 0.0431 +/-0.0808 0.0912 pCi/g Manganese-54 UI 0.00 +/-0.0319 0.0234 +/-0.0319 0.0508 pCi/g Niobium-94 U 0.00339 +/-0.0261 0.0228 +/-0.0261 0.0488 pCi/g Potassium-40 11.4 +/-1.06 0.205 +/-1.06 0.465 pCi/g Radium-226 0.335 +/-0.139 0.0466 +/-0.139 0.0996 pCi/g Silver-108m U 0.019 +/-0.0232 0.0222 +/-0.0232 0.0471 pCi/g Thallium-208 UI 0.00 +/-0.0512 0.0421 +/-0.0512 0.0876 pCi/g Rad Gas Flow Proportional Counting GFPC,SO9O, solid-ALL FSS Strontium-90 U 0.0165 +/-0.0176 0.013 +/-0.0176 0.0294 pCi/g KSD1 09/16/06 1622 567998 5 Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid-HTD2,ALL FSS Tritium U -3.47 +/-4.16 3.69 +/-4.16 7.84 pCi/g ATH2 09/17/06 0602 567994 6 70

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-005F Project: YANKO 1204 Sample ID: 171459018 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Liquid Scintillation Analysis Liquid Scint C14, Solid AIlFSS Carbon- 14 U 0. 0646 +/-0.0829 0.0662 +/-0.0829 0.140 pCi/g AXD2 09/14/06 1707 567937 8 Liquid Scint Fe55, Solid-ALL FSS Iron-55 U 1.67 +/-37.9 25.9 +/-37.9 53.9 pCi/g MXP1 09/19/06 1409 567933 9 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 U -( ).583 +/-7.08 5.96 +/-7.08 12.3 pCi/g MXPI 09/16/06 1139 567934 10 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U -( ).218 +/-0.276 0.237 +/-0.276 0.487 pCi/g KXRI 09/23/06 1112 567935 11 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 MXP2 09/12/06 1824 567635 The following Analytical Methods were performed Method Description I DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Pu-I I-RC Modified 3 DOE EML HASL-300, Pu- I -RC Modified 4 EML HASL 300, 4.5.2.3 5 EPA 905.0 Modified 6 EPA 906.0 Modified 7 EPA 906.0 Modified 8 EPA EERF C-01 Modified 9 DOE RESL Fe-I, Modified 10 DOE RESL Ni-I, Modified 11 DOE EML HASL-300, Tc-02-RC Modified 12 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Recovery% Acceptable Limits Americium-243 Alphaspec Am241, Cm, Solid ALL 98 (15%-I125%)

Plutonium-242 Alphaspec Pu, Solid-ALL FSS 86 (15%-125%o)

Carrier/Tracer Recovery Liquid Scint Pu241, Solid-ALL FS 77 (25%-.125%)

Carrier/Tracer Recovery GFPC, Sr90, solid-ALL FSS 81 (25%-I125%)

Carrier/Tracer Recovery Liquid Scint Fe55, Solid-ALL FS 73 (15%-125%)

71

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-005F Proiect: YANKO 1204 Sample ID: 171459018 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Carrier/Tracer Recovery Liquid Scint Ni63, Solid-ALL FS 72 (25%-125%)

Carrier/Tracer Recovery Liquid Scint Tc99, Solid-ALL FS 81 (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

• 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.

72

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-008F Project: YANK01204 Sample ID: 171459019 Client ID: YANKOO Matrix: TS Vol. Recv.:

Collect Date: 07-SEP-06 Receive Date: 12-SEP-06 Collector: Client Moisture: 12.8%

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 0.0113 +/-0.0716 0.0455 +/-0.0716 0.228 pCi/g JASI 09/15/06 1152 567824 1 Curium-242 U 0.0273 +/-0.109 0.0667 +/-0.109 0.276 pCi/g Curium-243/244 U 0.0507 +/-0.0993 0.00 +/-0.0996 0.137 pCi/g Alphaspec Pu, Solid-ALL FSS Plutonium-238 U - -0.0761 +/-0.124 0.135 +/-0.124 0.370 pCi/g JASI 09/16/06 0952 567825 2 Plutonium-239/240 U 0.0293 +/-0.108 0.0734 +/-0.109 0.246 pCi/g Liquid Scint Pu241, Solid-ALL FSS Plutonium-241 U 0.806 +/-10.1 8.48 +/-10.1 17.8 pCi/g JASI 09/17/06 0651 567826 3 Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.513 +/-0.119 0.0533 +/-0.119 0.115 pCi/g MJH1 09/22/06 0702 569470 4 Americium-241 U 0.0265 +/-0.111 0.0908 +/-0.111 0.189 pCi/g Bismuth-212 UI 0.00 +/-0.259 0.106 +/-0.259 0.229 pCi/g Bismuth-214 0.329 +/-0.0733 0.0296 +/-0.0733 0.0629 pCi/g Cesium-134 U 0.0211 +/-0.0191 0.0182 +/-0.0191 0.039 pCi/g Cesium-137 0.0691 +/-0.0311 0.0138 +/-0.0311 0.0297 pCi/g Cobalt-60 U 0.00183 +/-0.0191 0.0167 +/-0.0191 0.0366 pCi/g Europium-152 U -0.0072 +/-0.0448 0.0351 +/-0.0448 0.0749 pCi/g Europium-154 U 0.00297 +/-0.0582 0.0508 +/-0.0582 0.110 pCi/g Europium-155 U 0.00564 +/-0.0538 0.0505 +/-0.0538 0.105 pCi/g Lead-212 0.415 +/-0.053 0.0322 +/-0.053 0.0667 pCi/g Lead-214 0.315 +/-0.0559 0.0278 +/-0.0559 0.059 pCi/g Manganese-54 U 0.0218 +/-0.0171 0.0165 +/-0.0171 0.0353 pCi/g Niobium-94 U 0.000382 +/-0.0149 0.0132 +/-0.0149 0.0283 pCi/g Potassium-40 11.6 +/-0.784 0.110 +/-0.784 0.251 pCi/g Radium-226 0.329 +/-0.0733 0.0296 +/-0.0733 0.0629 pCi/g Silver-108m U 0.00181 +/-0.0147 0.0131 +/-0.0147 0.0279 pCi/g Thallium-208 0.175 +/-0.0304 0.0138 +/-0.0304 0.0296 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr90, solid-ALL FSS Strontium-90 U 0.00601 +/-0.0151 0.012 +/-0.0151 0.0271 pCi/g KSD1 09/16/06 1622 567998 5 Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid-HTD2,ALL FSS Tritium U -0.939 +/-4.47 3.80 +/-4.47 8.07 pCi/g ATH2 09/17/06 0633 567994 6 73

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-008F Proiect: YANKO 1204 Sample ID: 171459019 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Re sult Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Liquid Scintillation Analysis Liquid Scint C14, Solid AII,FSS Carbon-14 U 0.00 +/-0.0838 0.0703 +/-0.0838 0.149 pCi/g AXD2 09/14/06 1754 567937 8 Liquid Scint Fe55, Solid-ALL FSS Iron-55 U 16.0 +/-51.7 35.1 +/-51.7 73.1 pCi/g MXPI 09/19/06 1425 567933 9 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 U - +/-6.17 5.26 +/-6.17 10.9 pCi/g MXPI 09/16/06 1210 567934 10 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U -0 .316 +/-0.277 0.241 +/-0.277 0.495 pCi/g KXRI 09/23/06 1129 567935 11 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 MXP2 09/12/06 1824 567635 The following Analytical Methods were performed Method Description I DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Pu-I I-RC Modified 3 DOE EML HASL-300, Pu-I 1-RC Modified 4 EML HASL 300, 4.5.2.3 5 EPA 905.0 Modified 6 EPA 906.0 Modified 7 EPA 906.0 Modified 8 EPA EERF C-01 Modified 9 DOE RESL Fe-I, Modified 10 DOE RESL Ni-I, Modified 11 DOE EML HASL-300, Tc-02-RC Modified 12 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Americium-243 Alphaspec Am241, Cm, Solid ALL 51 (15°o%- 125%)

Plutonium-242 Alphaspec Pu, Solid-ALL FSS 82 (15%-/125%)

Carrier/Tracer Recovery Liquid Scint Pu241, Solid-ALL FS 92 (25%-125 %)

Carrier/Tracer Recovery GFPC, Sr90, solid-ALL FSS 92 (25%-125%)

Carrier/Tracer Recovery Liquid Scint Fe55, Solid-ALL FS 68 (15%-125%)

74

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: September 26, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9530-0002-008F Proiect: YANK01204 Sample ID: 171459019 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Carrier/Tracer Recovery Liquid Scint Ni63, Solid-ALL FS 87 (25%-125%)

Carrier/Tracer Recovery Liquid Scint Tc99, Solid-ALL FS 80 (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.

75

I QUALITY CONTROL DATA 76

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Report Date: September 26, 2006 Client : Connecticut Yankee Atomic Power Page 1 of 9 362 Injun Hollow Rd East Hampton, Connecticut

Contact:

Mr. Jack McCarthy Workorder: 171459 Parmname NOM Sample _Qual QC Units RPD% REC% Range AnIst Date Time Rad Alpha Spec Batch 567824 QC1201181598 171450001 DUP Americium-241 U 0.0224 U -0.0344 pCi/g 947 (0% - 100%) JASI 09/19/06 08:08 Uncert: +/-0.0562 +/-0.0558 TPU: +/-0.0563 +/-0.0558 Curium-242 U 0.029 U 0.00 pCi/g 200 (0% - 100%)

Uncert: +/-0.0568 +/-0.0576 TPU: +/-0.0569 +/-0.0576 Curium-243/244 U 0.0152 U -0.0054 pCi/g 420 (0%- 100%)

Uncert: +/-0.0812 +/-0.060 TPU: +/-0.0812 +/-0.060 I QC1201181600 LCS Americium-241 9.83 9.33 pCi/g 95 (75%-125%)

Uncert: +/-0.996 TPU: +/-1.40 Curium-242 U 0.092 pCi/g Uncert: +/-0.112 TPU: +/-0.113 Curium-243/244 11.9 10.9 pCi/g 92 (75%-125%)

Uncert: +/- 1.08 TPU: +/-1.58 QC1201181597 MB Americium-241 U -0.0214 pCi/g 09/15/06 11:52 Uncert: +/-0.0709 TPU: +/-0.0711 Curium-242 U 0.019 pCi/g Uncert: +/-0.0757 TPU: +/-0.0757 Curium-243/244 U 0.00145 pCi/g Uncert: +/-0.0787 TPU: +/-0.0787 QC1201181599 171450001 MS Americium-241 13.0 U 0.0224 12.3 pCi/g 95 (75%-125%) 09/19/06 08:08 Uncert: +/-0.0562 +/-1.24 TPU: +/-0.0563 +/-1.79 Curium-242 U 0.029 U -0.0661 pCi/g Uncert: +/-0.0568 +/-0.0458 TPU: +/-0.0569 +/-0.0463 Curium-243/244 15.7 U 0.0152 17.3 pCi/g 110 (75%-125%)

Uncert: +/-0.0812 +/-1.46 TPU: +/-0.0812 +/-2.33 Batch 567825 QC1201181602 171450001 DUP Plutonium-238 U -0.00319 U -0.0577 pCi/g 179 (0%- 100%) JASI 09/16/06 09:52 77

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 171459 Page 2 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Alpha Spec Batch 567825 Uncert: +/-0.174 +/-0.0594 TPU: +/-0.174 +/-0.0597 Plutonium-239/240 U -0.0638 U -0.024 pCi/g 91 (0%- 100%)

Uncern: +/-0.132 +/-0.0868 TPU: +/-0.132 +/-0.0868 QC1201181604 LCS Plutonium-238 U 0.0415 pCi/g (75%-125%) 09/16/06 09:52 Uncert: +/-0.0777 TPU: +/-0.0779 Plutonium-239/240 9.08 7.12 pCi/g 78 (75%-125%)

Uncert: +/-0.872 TPU: +/-1.16 QC1201181601 MB Plutonium-238 U -0.0876 pCi/g 09/16/06 09:52 Uncert: +/-0.107 TPU: +/-0.108 Plutonium-239/240 U 0.00165 pCi/g Uncert: +/-0.0898 TPU: +/-0.0898 QC1201181603 171450001 MS Plutonium-238 U -0.00319 U -0.0197 pCi/g (75%-125%) 09/16/06 09:52 Uncert: +/-0.174 +/-0.0981 TPU: +/-0.174 +/-0.0981 Plutonium-239/240 12.0 U -0.0638 10.3 pCi/g 86 (75%-125%)

Uncert: +/-0.132 +/-1.11 TPU: +/-0.132 +/-1.53 Batch 567826 QC1201181606 171450001 DUP Plutonium-241 U 6.26 U -8.24 pCi/g 0 (0% - 100%) JAS I 09/17/06 07:23

+/- 11.0 Uncert: +1-11.5

+/- 11.0 TPU: +1-11.5 QC1201181608 LCS Plutonium-241 127 112 pCi/g 88 (75%-125%) 09/17/06 07:55 Uncert: +/-16.4 TPU: +/-20.0 QC1201181605 MB Plutonium-241 U -2.99 pCi/g 09/17/06 07:07 Uncert: +/-11.0 TPU: +/-11.0 QC1201181607 171450001 MS Plutonium-241 138 U 6.26 104 pCilg 76 (75%-125%) 09/17/06 07:39 Uncert: +1-11.5 +/-14.0 TPU: +1-11.5 +/-17.1 Rad Gamma Spec Batch 569470 QC1201185435 171459001 DUP Actinium-228 0.45 I UI 0.00 pCi/g (0%- 100%) MJHI 09/22/06 08:19 Uncert: +/-0.116 +/-0.158

+/-0.158 78

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 171459 Page 3 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 569470 TPU: +/-0.116 Americium-241 U 0.00827 U -0.0155 pCi/g 656 (0% - 100%)

Uncert: +/-0.0741 +/-0.109 TPU: +/-0.0741 +/-0.109 Bismuth-212 0.385 0.437 pCi/g 13 (0%- 100%)

Uncert: +/-0.170 +/-0.274 TPU: +/-0.170 +/-0.274 Bismuth-214 0.247 0.258 pCi/g 4 (0%- 100%)

Uncert: +/-0.058 +/-0.0755 TPU: +/-0.058 +/-0.0755 Cesium- 134 U 0.00966 U 0.0205 pCi/g 72 (0%- 100%)

Uncert: +/-0.0198 +/-0.0245 TPU: +/-0.0198 +/-0.0245 Cesium-137 0.0773 0.0612 pCi/g 23 (0%- 100%)

Uncert: +/-0.0359 +/-0.0319 TPU: +/-0.0359 +/-0.0319 Cobalt-60 U 0.002 U 0.00337 pCi/g 5I (0%- 100%)

Uncert: +/-0.0191 +/-0.0191 TPU: +/-0.0191 +/-0.0191 Europium- 152 U -0.00753 U 0.00154 pCi/g 303 (0%- 100%)

Uncert: +/-0.0423 +/-0.053 TPU: +/-0.0423 +/-0.053 Europium- 154 U -0.00523 U -0.0195 pCi/g 115 (0%- 100%)

Uncert: +/-0.0556 +/-0.0653 TPU: +/-0.0556 +/-0.0653 Europium- 155 u 0.00174 U 0.00779 pCi/g 127 (0%- 100%)

Uncert: +/-0.0463 +/-0.0506 TPU: +/-0.0463 +/-0.0506 Lead-212 0.369 0.414 pCi/g 11 (0%- 100%)

Uncert: +/-0.0425 +/-0.0533 TPU: +/-0.0425 +/-0.0533 Lead-214 0.271 0.302 pCi/g 11 (0%- 100%)

Uncert: +/-0.0651 +/-0.0623 TPU: +/-0.0651 +/-0.0623 Manganese-54 U -0.000155 U 0.0283 pCi/g 202 (0%- 100%)

Uncert: +/-0.0163 +/-0.023 TPU: +/-0.0163 +/-0.023 Niobium-94 U 0.00779 U -0.00441 pCi/g 723 (0%- 100%)

Uncert: +/-0.0158 +/-0.0175 TPU: +/-0.0158 +/-0.0175 Potassium-40 10.3 9.98 pCi/g 3 (0%- 20%)

Uncert: +/-0.745 +/-0.93 I TPU: +/-0.745 +/-0.931 Radium-226 0.247 0.258 pCi/g 4 (0%- 100%)

Uncert: +/-0.058 +/-0.0755 TPU: +/-0.058 +/-0.0755 Silver- 108m U -0.0111 U 0.00517 pCi/g 550 (0%- 100%)

Uncert: +/-0.0159 +/-0.015 79

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 171459 Page 4 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 569470 TPU: +/-0.0159 +1-0.015 Thallium-208 0.151 0.130 pCi/g is (0%- 100%)

Uncert: +/-0.036 +/-0.0376 TPU: +/-0.036 +/-0.0376 QC1201185436 LCS Actinium-228 U 0.298 pci/g 09/22/06 07:05 Uncert: +/-0.799 TPU: +/-0.799 Americium-241 23.4 26.2 pCi/g 112 (75%-125%)

Uncert: +/-2.16 TPU: +/-2.16 Bismuth-212 U 1.00 pCi/g Uncert: +/- 1.27 TPU: +/-1.27 Bismuth-214 U 0.0159 pCi/g Uncert: +/-0.309 TPU: +/-0.309 Cesium- 134 U -0.116 pCi/g Uncert: +/-0.216 TPU: +/-0.216 Cesium- 137 9.57 10.1 pCi/g 106 (75%-125%)

Uncert: +/-1.15 TPU: +/-1.15 Cobalt-60 14.4 15.0 pCi/g 104 (75%-125%)

Uncert: +/-0.819 TPU: +/-0.819 Europium- 152 U -0.243 pCi/g Uncert: +/-0.369 TPU: +/-0.369 Europium- 154 U -0.11 pCi/g Uncert: +/-0.410 TPU: +/-0.410 Europium- 155 U 0.013 pCi/g Uncert: +/-0.321 TPU: +/-0.321 Lead-212 U 0.0784 pCi/g Uncert: +/-0.191 TPU: +/-0.191 Lead-214 U -0.038 pCi/g Uncert: +/-0.307 TPU: +/-0.307 Manganese-54 U -0.155 pCi/g Uncert: +/-0.182 TPU: +/-0.182 Niobiumn-94 U -0.039 pCi/g Uncert: +/-0.158 TPU: +/-0.158 Potassium-40 U 0.688 pCi/g 80

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 171459 Page 5 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 569470 Uncert: +/-1.74 TPU: +/-1.74 Radium-226 U 0.0159 pCi/g (75%-125%)

Uncert: +/-0.309 TPU: +/-0.309 Silver-108m U -0.0793 pCi/g Uncert: +1-0.150 TPU: +1-0.150 Thallium-208 U 0.0756 pCi/g Uncert: +/-0.158 TPU: +/-0.158 QCI201185434 MB Actinium-228 U 0.0263 pCi/g 09/22/06 07:03 Uncert: +/-0.040 TPU: +/-0.040 Americium-241 U -0.0217 pCi/g Uncert: +/-0.0382 TPU: +/-0.0382 Bismuth-212 U 0.0381 pCi/g Uncert: +/-0.144 TPU: +/-0.144 Bismuth-214 U 0.00388 pCi/g Uncert: +/-0.0281 TPU: +/-0.0281 Cesium-134 U 0.00104 pCi/g Uncert: +/-0.0102 TPU: +/-0.0102 Cesium-137 U 0.00609 pCi/g Uncert: +/-0.00962 TPU: +/-0.00962 Cobalt-60 U 0.0122 pCi/g Uncert: +/-0.0125 TPU: +/-0.0125 Europium- 152 U -0.00302 pCi/g Uncert: +/-0.0255 TPU: +/-0.0255 Europium- 154 U 0.0216 pCi/g Uncert: +/-0.0383 TPU: +/-0.0383 Europium- 155 U -0.0014 pCi/g Uncert: +/-0.0306 TPU: +/-0.0306 Lead-212 U 0.00111 pCi/g Uncert: +/-0.0314 TPU: +/-0.0314 Lead-214 U 0.0114 pCi/g Uncert: +/-0.0402 TPU: +/-0.0402 81

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 171459 Page 6 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 569470 Manganese-54 U 0.00318 pCi/g Uncert: +/-0.0108 TPU: +/-0.0108 Niobium-94 U 0.000782 pCi/g Uncert: +/-0.00945 TPU: +/-0.00945 Potassium-40 U 0.0412 pCi/g Uncert: +/-0.164 TPU: +/-0.164 Radium-226 U 0.00388 pCi/g Uncert: +/-0.0281 TPU: +/-0.0281 Silver-108m U 0.00306 pCi/g Uncert: +/-0.00936 TPU: +/-0.00936 Thallium-208 U 0.0021 pCi/g Uncert: +/-0.0113 TPU: +/-0.0113 Rad Gas Flow Batch 567998 QC1201181990 '171450001 DUP Strontiurn-90 U 0.00357 U 0.00343 pCi/g 0 (0%- 100%) KSDI 09/16/06 16:22 Uncert: +/-0.0189 +/-0.016 TPU: +/-0.0189 +/-0.016 QC1201181992 LCS Strontium-90 1.74 1.60 pCilg 92 (75%-125%) 09/16/06 16:22 Uncert: +/-0.0923 TPU: +/-0.104 QC1201181989 MB Strontium-90 U 0.00814 pCi/g 09/16/06 16:22 Uncert: +/-0.0156 TPU: +/-0.0156 QC1201181991 171450001 MS Strontium-90 1.59 U 0.00357 1.31 pCi/g 83 (75%-125%) 09/16/06 16:22 Uncert: +/-0.0189 +/-0.0727 TPU: +/-0.0189 +/-0.0821 Rad Liquid Scintillation Batch 567933 QC1201181850 171450001 DUP Iron-55 U -9.33 U -6.78 pCi/g 0 (0% - 100%) vlXPI 09/19/06 14:59 Uncert: +/-42.3 +/-58.7 TPU: +/-42.3 +/-58.7 QC1201181852 LCS Iron-55 625 599 pCi/g 96 (75%-125%) 09/19/06 15:32 Uncert: +/-50.6 TPU: +/-63.3 QC1201181849 MB Iron-55 U 9.17 pCi/g 09/19/06 14:42 82

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.corn QC Summary Workorder: 171459 Page 7 of 9 Pnrmn~me NAM Samnle (4u-l OC Units RPD% REC% Range Anist Date Time Rad Liquid Scintillation Batch 567933 Uncert: +/-33.0 TPU: +/-33.0 QC1201181851 171450001 MS Iron-55 703 U -9.33 635 pCi/g 90 (75%-125%) 09/19/06 15:15 Uncert: +/-42.3 +/-62.9 TPU: +/-42.3 +/-75.0 Batch 567934 QC1201181855 171450001 DUP Nickel-63 U -2.65 U -1.49 pCi/g 0 (0% - 100%) vIXPI 09/16/06 13:14 Uncert: +/-6.01 +/-6.32 TPU: +/-6.01 +/-6.32 QC1201181857 .LCS Nickel-63 512 456 pCi/g 89 (75%-125%) 09/16/06 14:17 Uncert: +/-16.3 TPU: +/-21.9 QC1201181854 MB Nickel-63 U -0.881 pCi/g 09/16/06 12:42 Uncert: +/-5.53 TPU: +/-5.53 QC1201181856 171450001 MS Nickel-63 594 U -2.65 544 pCi/g 92 (75%-125%) 09/16/06 13:45 Uncert: +/-6.01 +/-18.3 TPU: +/-6.01 +/-26.2 Batch 567935 QC1201181859 171454026 DUP Technetium-99 U 0.167 U -0.187 pCi/g 0 (0% - 100%) K.XRI 09/23/06 12:01 Uncert: +/-0.285 +/-0.284.

TPU: +/-0.285 +/-0.284 QC1201181861 LCS Technetium-99 12.9 12.6 pCi/g 98 (75%-125%) 09/23/06 12:34 Uncert: +/-0.514 TPU: +/-0.588 QC1201181858 MB Technetium-99 U 0.0238 pCi/g 09/23/06 11:45 Uncert: +/-0.252 TPU: +/-0.252 QC1201181860 171454026 MS Technetium-99 13.0 U 0.167 12.8 pCi/g 99 (75%-125%) 09/23/06 12:18 Uncert: +/-0.285 +/-0.552 TPU: +/-0.285 +/-0.623 Batch 567937 QC1201181863 171454026 DUP Carbon- 14 U 0.0855 U 0.0747 pCi/g 0 (0%- 100%) %XD2 09/14/06 19:29 Uncert: +/-0.0887 +/-0.0883 TPU: +/-0.0887 +/-0.0883 QC1201181865 LCS Carbon- 14 6.66 6.81 pCi/g 102 (75%-125%) 09/14/06 20:34 Uncert: +/-0.458 TPU: +/-0.470 83

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 171459 Page 8 of 9 Parmname NOM SamDle Oual QC Units RPD% REC% Range Anist Date Time Rad Liquid Scintillation Batch 567937 QC1201181862 MB Carbon-14 U 0.0127 pCi/g 09/14/06 18:42 Uncert: +/-0.0794 TPU: +/-0.0794 QC1201181864 171454026 MS Carbon- 14 7.13 U 0.0855 6.82 pCi/g 96 (75%-125%) 09/14/06 20:17 Uncert: +/-0.0887 +/-0.448 TPU: +/-0.0887 +/-0.460 Batch 567994 QC1201181978 171454026 DUP Tritium U 2.19 U -0.623 pCi/g 0 (0%- 100%) ATH2 09/17/06 07:37 Uncert: +/-4.65 +/-4.58 TPU: +/-4.65 +/-4.58 QC1201181980 LCS Tritium 65.1 61.4 pCi/g 94 (75%-125%) 09/17/06 08:40 Uncert: +/-7.48 TPU: +/-7.56 QC1201181977 MB Tritium U 0.459 pCi/g 09/17/06 07:05 Uncert: +/-4.46 TPU: +/-4.46 QC1201181979 171454026 MS Tritium 65.7 U 2.19 60.0 pCi/g 91 (75%-125%) 09/17/06 08:08 Uncert: +/-4.65 +/-7.47 TPU: +/-4.65 +/-7.54 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 RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL 84

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 171459 Page 9 of 9 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time A

It 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.

^ 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.

85

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD ATTACHMENT 4 (DQA RESULTS)

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD ATTACHMENT 4A (PRELIMINARY DATA REVIEW)

PRELIMINARY DATA REVIEW FORM Survey Unit: 9530-0002 Survey Unit Name: Central Peninsula Classification 2 Survey Media: Soil Type of Survey: Final Status Survey Type of Measurement: Radionuclide Specific

[umber of Measurements: 15 BASIC STATISTICAL QUANTITIES Cs-137 Target Level (pCi/g): 5.3 8E+00 Minimum Value: 3.15E-02 Maximum Value: 2.07E-01 Mean: 8.63E-02 Median: 7.69E-02 Standard Deviation : 5.20E-02 Reported Results Cs-137 Fraction of Concentration Target Sample Identification (pCi/g) Detect? Level

+

9530-0002-001F 7.73E-02 0.014

+

9530-0002-002F 9.32E-02 0.017

+

9530-0002-003F 3.15E-02 0.006

+

9530-0002-004F 8.55E-02 0.016

+

9530-0002-005F 1.21E-01 0.022

+

9530-0002-006F 2.07E-0 I 0.038

+

9530-0002-007F 7.69E-02 0.014

+

9530-0002-008F 6.91E-02 0.013

+

9530-0002-009F 4.49E-02 0.008

+

9530-0002-01OF 1.96E-01 0.036

+

9530-0002-01 IF 5.93E-02 0.011

+

9530-0002-012F 6.16E-02 0.011

+

9530-0002-013F 8.04E-02 0.015

+

9530-0002-014F 4.22E-02 0.008

+

9530-0002-015F 4.82E-02 0.009 Submitted by/Date 1f 1 of I

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD ATTACHMENT 4B (GRAPHICAL REPRESENTATION OF DATA)

FREQUENCY PLOT FOR CESIUM-137 Survey Unit: 9520-0003 Survey Unit Name: Southwest Site Storage Area Mean: 8.63E-02 pCi/g Frequency Plot For Cs-137 10 8

LL 2

06 3.15E-02 8.33E-02 1.35E-01 1.87E-01 2.39E-01 Upper End Value (pCilg)

Upper End Observation Observation Value Frequency Frequency 3.15E-02 1 7%

8.33E-02 9 60%

1.35E-01 3 20%

1.87E-01 0 0%

2.39E-01 2 13%

Total: 15 100%

Submitted by/Date '

tOLZ4 10I Reviewe 1 of 1 y/Da

QUANTILE PLOT FOR CESIUM-137 Survey Unit: 9530-0002 Survey Unit Name: Central Peninsula Mean: 8.63E-02 pCi/g Quantile Plot For Cs-137 2.50E-01 -

N 2.00E-01 -

CL

.2S1.50E-01 -

5.OOE-02 0.00E+00 0 20 40 60 80 100 Percentage Cs-137 Rank Percentage 3.15E-02 1 3%

4.22E-02 2 10%

4.49E-02 3 17%

4.82E-02 4 23%

5.93E-02 5 30%

6.16E-02 6 37%

6.91E-02 7 43%

7.69E-02 8 50%

7.73E-02 9 57%

8.04E-02 10 63%

8.55E-02 11 70%

9.32E-02 12 77%

1.21E-01 13 83%

1.96E-01 14 90%

2.07E-01 15 97%

$ 2*,. ,z*Z

/

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD ATTACHMENT 4C (SIGN TEST)

Connecticut Yankee Decommissioning Project GPP-GGGR-R5121-001 Attachment A, Health Physics Procedure Rev CY-001 MAJOR Sign Test Calculation Sheet For A Single Radionuclide or Gross Activity Measurements Survey Area Number: 9530 Survey Unit Number: 0002 Survey Area Name: Central Peninsula WPIR#: 2006-0038 Classification: 2 Type I (axerror): 0.05 (N): 15 Radionuclide: Cs-137 DCGL: 5.38 Results (pCi/g) DCGL - Results Sign 7.73E-02 5.30E+00 1 9.32E-02 5.29E+00 I 3.15E-02 5.35E+00 1 8.55E-02 5.29E+00 1 1.21E-01 5.26E+00 1 2.07E-01 5.17E+00 I 7.69E-02 5.30E+00 1 6.91E-02 5.31E+00 I 4.49E-02 5.34E+00 1 1.96E-01 5.18E+00 I 5.93E-02 5.32E+00 I 6.16E-02 5.32E+00 1 8.04E-02 5.30E+00 1 4.22E-02 5.34E+00 1 4.82E-02 5.33E+00 1 Number of positive differences (S+): 15 Critical Value: 11 Survey Unit Meets Acceptance Criterion Performed by: 4d-_L Date: -C/-7/ 414 Independent Review b :_- - Date: 1OILZ4 10o4 Page 1 of 1

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD ATTACHMENT 4D (QC SPLIT RESULTS)

Health Physics Procedure 24265-000-GPP-GGGR-R5124-000-Rev.CY-000 Attachment A HelhPyicsPoeue225O0GPGG-5I2-0-e.Y0"Atcmn Split Sample Assessment Form Survey Area#: 9530 Survey Unit #: 0002 Survey Unit name: Central Peninsula Sample Plan or WPIR#: 2005-0038 SML#: 9530-0002-004 Sample

Description:

Comparison of split samples collected from sample measurement location #4 and analyzed using gamma spectroscopy by off-site Vendor Laboratory. The standard sample was 9530-0002-004F, the comparison sample was 9530-0002-004FS.

STANDARD COMPARISON Radionuclide Activity Standard Resolution Agreement Activity Standard Comparison Acceptable Value Error Range Value Error Ratio (Y/N)

Cs-137 8.55E-2 1.37E-2 6 0520 9.39E-2 1.73E-2 1.1 Y 4 4 4- 4 4 A __________________

____________________________ L ____________________

A 4. .4 A _____________________

Comments/Corrective Actions: N/A Table is provided to show acceptance criteria used to assess split samples.

Resolution Agreement Range 4-7 0.5 -2.0 8 -15 0.6 - 1.66 16 -50 0.75 - 1.33 51 -200 0.80 - 1.25

>200 0.85 -1.18 j

Page 1 of I

Health Phvsics Procedure 24265-000-GPP-GGGR-R5]24-000-Rev.CY-000 Attachment A HelhPyicsPoeue22500GPGG-5I2-0-e.Y00Atcmn" Split Sample Assessment Form Survey Area#: 9530 Survey Unit #: 0002 Survey Unit name: Central Peninsula Sample Plan or WPIR#: 2005-0038 SML#: 9530-0002-014 Sample

Description:

Comparison of split samples collected from sample measurement location #14 and analyzed using gamma spectroscopy by off-site Vendor Laboratory. The standard sample was 9530-0002-014F, the comparison sample was 9530-0002-014FS.

STANDARD COMPARISON Radionuclide Activity Standard Resolution Agreement Activity Standard Comparison Acceptable Value Error Range Value Error Ratio (Y/N)

K-40 10.2 9.29E- l 22 0.75- 1.33 9.43 4.64E- 1 0.92 Y Comments/Corrective Actions: Not enough Cs-137 to Table is provided to show acceptance criteria yield an acceptable Resolution (result was less than 4). used to assess split samples.

Resolution Agreement Range 4-7 0.5 -2.0 8 -15 0.6 - 1.66 16 -50 0.75 - 1.33 51 -200 0.80 - 1.25

>200 0.85 - 1.18 Page 1 of 1

CENTRAL PENINSULA SURVEY UNIT 9530-0002 RELEASE RECORD ATTACHMENT 4E (COMPASS DQA WITH POWER CURVE)

DQA Surface Soil Report Assessment Summary Site: 9530-0002 Planner(s): McCarthy Survey Unit Name: Central Peninsula Area Report Number: 2 Survey Unit Samples: 15 Reference Area Samples: 0 Test Performed: Sign Test Result: Not Performed Judgmental Samples: 0 EMC Result: Not Performed Assessment

Conclusion:

Reject Null Hypothesis (Survey Unit PASSES)

Retrospective Power Curve 1

0.9 U

U=

0.8 0.7 0.6 I- 0.5 0.4 0.3 0.2

=L 0.1 0

0 1 2 3 4 5 6 Soil Concentration (pCi/g), including background

- - Prospective Power U 1-beta .... Actual Power

- LBGR - - Estimated Power

, DCGL -- - Retrospective Power COMPASS v0.0.0 11/2812006 Page1I

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

Type = "R" indicates reference area sample.

Sample Number Type Cs-137 (pCi/g) 9530-0002-001 F S 0.08 9530-0002-002F S 0.09 9530-0002-003F S 0.03 9530-0002-004F S 0.09 9530-0002-005F S 0.12 9530-0002-006F S 0.21 9530-0002-007F S 0.08 9530-0002-008F S 0.07 9530-0002-009F S 0.04 9530-0002-01 OF S 0.2 9530-0002-011 F S 0.06 9530-0002-012F S 0.06 9530-0002-013F S 0.08 9530-0002-014F S 0.04 9530-0002-015F S 0.05 Basic Statistical Quantities Summary Statistic Survey Unit Backaround DQO Results Sample Number 15 N/A N= 15 Mean (pCi/g) 0.09 N/A 0.09 Median (pCi/g) 0.08 N/A N/A Std Dev (pCi/g) 0.05 N/A 0.0686 High Value (pCi/g) 0.21 N/A N/A Low Value (pCi/g) 0.03 N/A N/A COMPASS v1.0.0 1112812006 Page 2