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Final Status Survey (FSS) Final Report - Phase VII - Chapter 19 of 19 - Appendix A18, Survey Unit Release Record 9803-0000, Subsurface Area Associated with North Grounds (Non-Protected Area)
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Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	05/01/2007
From:	Wojtkowiak D; Connecticut Yankee Atomic Power Co
To:	; NRC/FSME
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Boo 19of1 Final Status Survey Final Report Phase VII Appendix AI8 Survey Unit Release Record 9803-0000, Subsurface Area Associated with North Grounds (non-protected area)

May 2007

CYAPCO FINAL STATUS SURVEY RELEASE RECORD SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS - (NON-PROTECTED AREA)

SURVEY UNIT 9803-0000 Prepared B "'O40*

FS8 ýngineer .**Ao Date: ol Reviewed B. 61 Date: o/07-Cý-ý 4ýFSS Engineer Approved By: *-- . tAo W *A. Date:_____

Technical Support Manager Revision 0

SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD TABLE OF CONTENTS

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

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

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

4. SURVEY DESIGN .............................................................................. 9

5. SURVEY IMPLEMENTATION ...................................................... 12

6. SURVEY RESULTS ......................................................................... 13

7. QUALITY CONTROL ..................................................................... 17

8. INVESTIGATIONS AND RESULTS ............................................. 17

9. REMEDIATION AND RESULTS .................................................... 17

10. CHANGES FROM THE FINAL STATUS SURVEY PLAN .......... 17

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

12. ANO M ALIE S .................................................................................... 18

13. CON CLU SION .................................................................................. 19

14. A TTA CH MEN TS .............................................................................. 19 14.1 Attachment 1 - Figures (5 pages including cover) 14.2 Attachment 2 - Laboratory Data (82 pages including cover) 14.3 Attachment 3 - DQA Results (14 pages including covers)

TOTAL 120 Revision 0

SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD

1. SURVEY UNIT DESCRIPTION Survey Unit 9803-0000 (Subsurface Area associated with the North Site Grounds (non-protected area) is designated as Final Status Survey (FSS) Class "C" subsurface soils area and consists of approximately thirty-five thousand four hundred eighty-five square meters (35,485 in 2) of area under uninhabited land associated with the parking lot, Warehouse #s 1 & 2 and the Steam Generator Mockup Building and is located approximately five hundred sixty five feet (565 ft) from the reference coordinate system benchmark used at Haddam Neck Plant (HNP) (see Attachment 1). Survey Unit 9803-0000 includes the subsurface soils located under open land area Survey Units 9504-0000, 9514-0000, 9514-0001, 9313-0000, 9302-0000 and 9512-0000. The topography consists of relatively flat open land that is void of all vegetation with a gentle slope toward the onsite pond (Survey Area 9508) to the north (called north as oriented with the north to south flow of the Connecticut River) of the survey area.

The reference coordinates associated with this survey unit are E002 through E014 by S050 through S063 (refer to "HNP 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 "Classification Basis Summary" conducted for Survey Unit 9803-0000 consisted of:

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

c) Historic and current survey records review, The initial classification for subsurface soil Survey Area 9803 was Class C in accordance with Table 2-10 of the LTP. A review of the "Initial and Supplemental CharacterizationReports" as well as the previous "Classification Basis Summaries" was performed. The source documents, the "Connecticut Yankee Haddam Neck CharacterizationReport" and "Initial Classificationfor Survey Areas at Connecticut Yankee", were incorporated by reference in LTP, Revision 0.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD Survey Area 9803 is comprised of subsurface soils located primarily under what was the main parking lot for the facility. During plant operation, this area was used to stockpile soils, asphalt spoils, snow and other materials. In addition, packaged radioactive materials have been staged in this area during the decommissioning process while awaiting shipment. The areas behind the Building Maintenance Equipment Warehouse and the Chemical Storage Warehouse were also used as storage areas for recovered radioactive materials returned to site as a result of the Offsite Materials Recovery Program.

The chronological age of the paved area dates back to the earliest days of plant operation. The "Initial Characterization Report" and the "Historic Site Assessment Supplement" contained minimal information on this area. One incident that was cited that may have affected this area was the discovery of several sources of elevated activity in March 1980 in the parking lot, along with other areas of the site. The investigation into the incident concluded that the elevated activity was most likely due to radioactive materials ejected from the Primary Vent Stack as a result of operational events in 1979. The report states that all elevated areas were removed upon detection.

In 1989, Warehouse #2 and Office Building #3/Primary Access Point (PAP) were built. When the buildings were constructed, only the parking lot asphalt was removed. The road way and the underlying soil was not disturbed. Subsequently, the primary parking lot was enlarged, re-paved and storm drains were installed for drainage. Outfalls from the storm drain system discharge to the southeast and southwest banks of the north pond (Survey Area 9508). The storm drain system piping may have acted as a possible pathway for the transport of residual activity from Survey Area 9313.

In 1997, scanning of the parking lot was performed using a floor monitor. No areas of elevated activity were identified. Soil samples were taken of a proposed sanitary sewer sump location just west of the PAP. No plant related radioactivity was identified in these samples.

As previously stated, a storm drain system was installed in 1989 under the parking area. The storm drain systems purpose was to conduct runoff water from the parking lot, including the northern most side of Survey Area 9313 (adjacent to the office building and warehouses), and the west hillside primarily to the retention pond. Outfalls from the storm drain system discharge to the southeast and southwest banks of the pond (Survey Area 9508). Overflow from the retention pond discharges to the east bank of the Connecticut River (Survey Area 9512). Leakage from the storm drain system piping may have conducted radioactive materials either from stack emissions in 1980 or from the radioactive materials transport path from Survey Area 9313 to the soil beneath.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD Recent decommissioning activities included the removal of all asphalt, concrete and sub-surface commodities such as storm drain and sewer system piping from this survey unit. Evaluation of soils exposed by commodities removal was performed under Radiological Assessment (RA) SSWP 06-08-009. The analytical results of soil samples taken from the exposed soils under the asphalt were used to provide information with regard to the distribution and concentration of residual activity in this survey unit and to identify the radionuclides of concern. Statistical quantities (mean, median and standard deviation) from the 2006 Radiological Assessment conducted under SSWP 08-009 are provided in Table 1.

Table 1 - Basic Statistical Quantities for Cs-137 and Co-60 from the 2006 Radiological Assessment Cs-137 Co-60 (pCi/g) (pCi/g)

Minimum Value: 2.86E-02 2.84E-02 Maximum Value: 9.OOE-02 8.41E-02 Mean: 4.82E-02 5.40E-02 Median: 4.56E-02 4.86E-02 Standard Deviation: 1.24E-02 1.56E-02 Cs-137 and Co-60 were the primary radionuclides detected in the sample population with both isotopes reported at fairly low concentrations.

No "Hard-to-Detect" (HTD) radionuclides were positively identified in any of the samples taken during the Radiological Assessment in concentrations meeting the accepted criteria for detection (i.e., a result greater than two (2) standard deviations uncertainty).

While Sr-90 was not identified in the analytical results, it was decided to include Sr-90 as a radionuclide of concern for this survey unit since Sr-90 was positively identified in the surface soils that correspond to this subsurface survey unit.

Therefore, all volumetric soil samples taken as part of the survey design for this survey unit were subjected to direct analysis for Sr-90.

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.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD 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 9803-0000 did not exceed the release criteria specified in the LTP and that the potential dose from residual radioactivity is As Low As Reasonably Achievable (ALARA).

A fundamental precursor to survey design is to establish a relationship between the release criteria and some measurable quantity. This is done through the development of Derived Concentration Guideline Levels (DCGL). 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.

Equation 1 HTotal =Hsoii+ HExistingGW + HFutureGW The total dose under the LTP criteria is twenty-five (25) mrem/yr Total Effective Dose Equivalent (TEDE) from all three (3) components. The allowable total dose under the Connecticut Department of Environmental Protection (CTDEP) radiological remediation standard for 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.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD 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 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, bounded by zero (0) mrem/yr TEDE.

Equation 2 19 mrem/yrTotad = 17 mrem/yrsoil + 2 mrem/yrExisting 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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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD Table 2 - Radionuclide Specific Base Case Soil DCGLs, Operational DCGLs and Required Minimum Detectable Concentrations (MDCs)

Radionuclide (1) Base Case Soil Operational DCGL Required MDC DCGL (pC/g) (2) (pC/g) (3) (pC/g) (4)

H-3 4.12E+02 2.80E+02 1.65E+01 C-14 5.66E+00 3.85E+00 2.26E-01 Mn-54 1.74E+01 1.18E+01 6.96E-01 Fe-55 2.74E+04 1.86E+04 1.10E+03 Co-60 3.81E+00 2.59E+00 1.52E-01 Ni-63 7.23E+02 4.92E+02 2.89E+01 Sr-90 1.55E+00 1.05E+00 6.20E-02 Nb-94 7.12E+00 4.84E+00 2.85E-01 Tc-99 1.26E+01 8.57E+00 5.04E-01 Ag-108m 7.14E+00 4.86E+00 2.86E-01 Cs-134 4.67E+00 3.18E+00 1.87E-01 Cs-137 7.91E+00 5.38E+00 3.16E-01 Eu-152 1.01E+01 6.87E+00 4.04E-01 Eu- 154 9.29E+00 6.32E+00 3.72E-01 Eu-155 3.92E+02 2.67E+02 1.57E+01 Pu-238 2.96E+O 1 2.01E+01 1.18E+00 Pu-239/240 2.67E+01 1.82E+01 1.07E+00 Am-241 (5) 2.58E+01 5.92E+02 1.03E+00 Pu-241 8.70E+02 1.75E+01 3.48E+01 Cm-243/244 2.90E+O 1 1.97E+01 1.16E+00 (1) Bold indicates those radionucldies considered Hard to Detect (HTD)

(2) The Base Case Soil DCGL(s) are specified by the LTP in Chapter 6 and are equivalent to twenty-five (25) mrem/yr TEDE (3) The Operational DCGL is equivalent to achieving seventeen (17) mrem/yr TEDE (4) The required MDC is equivalent to achieving one (1) mrem/yr TEDE (5) Americium-241 can be analyzed by gamma and alpha spectroscopy and is considered to be Easy to Detect (ETD). The preferred result is the alpha spectroscopy's when both analyses are performed Revision 0 8

SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD Another important facet of the DQO process is to identify the radionuclides of concern and determine the concentration variability. During the survey of the subsurface soils in this survey unit, Cs-137 and Co-60 were identified as the principle gamma emitting radionuclides which were present in sufficient concentrations that could potentially exceed the screening criteria. Sr-90 was included as a radionuclide of concern due to its presence in the surface soils in the land survey units associated with this subsurface area. The Radiological Assessment survey data were used for the survey design and are provided in Table 1.

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, "Preparationof Final Status Survey Plans".

The FSS plan uses a sample design that includes either random or biased media sampling.

The DQO process determined that both Cs-137 and Co-60 would be the primary radionuclides of concern in Survey Unit 9803-0000. The Radiological Assessment survey did not include any other additional HTD radionuclides of concern for this survey unit. As Sr-90 concentrations were determined by direct analysis, surrogate DCGLs were not required as part of the survey design for this survey unit via screening under LTP Section 5.4.7.2, "Gross Activity DCGLs".

Other radionuclides that were positively identified in concentrations greater than the screening criteria during the performance of this FSS would be evaluated to ensure adequate survey design. 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% of the respective Operational DCGL for individual radionuclides and less than 10% of the combined Operational DCGL for aggregates.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD The Elevated Measurement Comparison (EMC) did not apply to this survey unit since it is a Class C subsurface soils 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.

In accordance with LTP Section 5.7.3.2.2, fifteen (15) subsurface soil samples were required in a Class C subsurface soils survey unit for non-parametric statistical testing. LTP Section 5.7.3.2.2 states that there will be a minimum of fifteen (15) measurement locations in a Class C subsurface soil area. LTP Section 5.7.3.2.2 states that the range of the number of measurements in Class C areas corresponds to the range of values for N (for Sign test), considering a = 0 .05, 13= 0.05, and a relative shift of < 3.0. Based upon a review of the historical information, the results of Radiological Assessments and Characterization Survey data, the acquisition of additional judgmental subsurface soil samples from within this survey unit was deemed unnecessary.

The locations of the soil samples were determined using Visual Sample Plan (VSP) in accordance with Procedure RPM 5.1-14, "Identifying, and Marking Surface Sample Locations for Final Status Survey." Visual Sample Plan was created by Pacific Northwest National Laboratory (PNNL) for the United States Department of Energy. A random sampling plan was selected for this survey unit, which is appropriate for a Class C survey unit.

During the performance of the survey, it was discovered that one (1) of the fifteen (15) sample locations identified for non-parametric testing were deemed to be inaccessible due to the presence of a steep bank which prevented GeoProbe travel.

The location identified was 9803-0000-006F. Subsequently, an addendum to the FSS plan was issued denoting an additional random sample measurement location to replace the location that was deemed to be inaccessible.

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.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD Table 3 - Sample Measurement Locations with Associated GPS Coordinates for Non-parametric Sample Population Designation Northing Easting 9803-0000-OOIF 237032.21 667885.67 9803-0000-002F 236841.78 668105.44 9803-0000-003F 236743.64 668401.39 9803-0000-004F 236787.90 667915.01 9803-0000-005F 236894.77 668100.32 9803-0000-007F 236758.73 668203.85 9803-0000-008F 236530.38 668222.47 9803-0000-009F 236676.97 668180.87 9803-0000-01OF 236657.73 668386.46 9803-0000-011F 236941.16 668324.68 9803-0000-012F 236748.12 668053.19 9803-0000-013F 236606.37 668343.48 9803-0000-014F 236873.17 668566.16 9803-0000-015F 236550.98 668170.66 9803-0000-016F°') 236847.09 668399.07 (1) Sample location 9803-0000-006F was inaccessible due to the presence of a steep bank; sample location 9803-0000-016F was added under an FSS plan addendum (refer to Section 10)

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 13% 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.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD Survey Unit 9803-0000 is a subsurface survey unit. Subsequently, no scanning was required.

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

Table 4 - Synopsis of the Survey Design Feature Design Criteria Basis Subsurface Survey Unit 35,485 m2 Based on AutoCAD-LT Land Area lAW LTP Section Number of Measurements 15 5.7.3.2.2 for a Class C (15 Random) Subsurface Soil Survey Unit Random sampling for Grid Spacing N/A Class C in accordance with LTP.

5.38 pCi/g Cs-137 Administratively set to Operational DCGL 2.59 pCi/g Co-60 achieve seventeen (17) 1.05 pCi/g Sr-90 mrem/yr TEDE (')

5.38 pCi/g Cs-137 The Operational DCGL Soil Investigation Level 2.59 pCi/g Co-60 meets the LTP criteria for 1.05 pCi/g Sr-90 a Class C survey unit (1)The allowable dose for soil in this survey unit is seventeen (17) mrem/yr TEDE as the bounding dose from existing and future groundwater has been established based on field data (reference CY memo ISC 06-024).

5. SURVEY IMPLEMENTATION Final status survey field activities were conducted under a Final Status Survey Plan (FSSP). The FSSP package included a detailed survey 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.

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.

Fifteen (15) subsurface soil samples were collected and packaged in accordance with Haddam Neck Plant (HNP) Procedure RPM 5.1-3, "Collection of Sample Mediafor Final Status Survey" and FSS design. Samples were collected using direct push probe technology (GeoProbe).

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD All samples were obtained to a depth of three (3) meters with the exception of sample numbers 9803-0000-004F, 9803-0000-005F, 9803-0000-008F and 9803-0000-014, where refusal was encountered due to the presence of bedrock prior to reaching a three (3) meter depth. Large stones, wood and/or root pieces were removed and the soil matrix was homogenized from each 3 meter soil column. Samples were controlled, transported, stored, and transferred to the off-site laboratory using Chain-of-Custody (COC) protocol in accordance with Procedure RPM 5.1-5, "Chain of Custody for FinalStatus Survey Samples."

Two (2) samples (9803-0000-003F and 9803-0000-013F) were randomly selected for HTD radionuclide analysis.

The implementation of survey specific quality control measures included the collection of two (2) samples (9803-0000-O0IF and 9803-0000-014F) for "split sample" analysis.

6. SURVEY RESULTS All field survey activities were conducted between April 9, 2007 and April 10, 2007.

The off-site laboratory employed for the radiological analyses of samples was General Engineering Laboratories, LLC. The laboratory analyzed the fifteen (15) samples collected for non-parametric statistical testing and the associated field splits 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 standard deviations uncertainty). However, Cs-137 was the only gamma-emitting radionuclides reported in concentrations exceeding the de-selection criteria.

Cs-137 was positively identified (i.e., a result greater than two (2) standard deviations uncertainty) in one (1) of the fifteen (15) samples collected for non-parametric statistical testing. Co-60 was not positively identified in any sample.

The mean of the gamma spectroscopic analysis results for the sample population indicated that Cs-137 was present at levels approaching 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 5.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD Table 5 - Summary of Gamma Spectroscopy Results for Subsurface Soil Samples Comprising the Statistical Sample Population Depth Cs-137 Sample Number (ft)(1) pCi/g 9803-0000-OO1F 12 2.81E-02 9803-0000-002F 12 1.12E-02 9803-0000-003F 12 2.58E-02 9803-0000-004F 4 -1.45E-02 9803-0000-005F 6 7.78E-03 9803-0000-007F 12 1.49E-02 9803-0000-008F 11 -2.90E-03 9803-0000-009F 12 -5.11E-04 9803-0000-01OF 12 1.08E-02 9803-0000-011F 12 6.01E-03 9803-0000-012F 12 4.66E-03 9803-0000-013F 12 1.80E-02 9803-0000-014F 3 1.13E-02 9803-0000-015F 12 -5.15E-03 9803-0000-016F 12 -8.08E-03 (1) Depth in feet is approximate. One (1) push of GeoProbe equals approximately four (4) feet of vertical depth.

In addition to Cs-137 and Co-60, Sr-90 was also identified during the DQO process as a radionuclide of concern. Subsequently, all samples were subjected to analysis by gas proportional counting for Sr-90. All analyses met the required minimum MDC.

Sr-90 was positively identified (i.e., a result greater than two (2) standard deviations uncertainty) in four (4) of the fifteen (15) samples collected for non-parametric statistical testing. The results of the Sr-90 analysis for the statistical sample population are provided below in Table 6.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD Table 6 - Summary of Sr-90 Analysis Results for Subsurface Soil Samples Comprising the Statistical Sample Population Sample Number Sr-90 9803-0000-OO1F 2.54E-03 9803-0000-002F 1.70E-02 9803-0000-003F -1.50E-02 9803-0000-004F -1.13E-02 9803-0000-005F 3.63E-03 9803-0000-007F -5.93E-03 9803-0000-008F -1.08E-02 9803-0000-009F 1.64E-02 9803-0000-01OF 1.16E-03 9803-0000-011F 2.60E-03 9803-0000-012F 1.28E-02 9803-0000-013F -2.88E-03 9803-0000-014F 1.67E-02 9803-0000-015F 5.05E-02 9803-0000-016F 1.74E-02 In addition to Sr-90, the off-site laboratory also processed, as required by the sample plan, two (2) samples for the full suite of HTD radionuclides as specified in LTP, Table 2-12, "Radionuclides Potentially Present at Haddam Neck Plant" and as provided in Table 3. The requested analyses included alpha spectroscopy, gas proportional counting, and liquid scintillation depending on the radionuclide and the measurement method. All analyses performed met the required minimum MDC.

Tc-99 was the only HTD other than Sr-90, which by analysis, met the criteria for detection (i.e., a result greater than two (2) standard deviations uncertainty). The highest result for Tc-99 was less than 5% of the Operational DCGL for Tc-99.

Therefore, Tc-99 will not be considered in the final dose determination for this survey unit. 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.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD The "sum-of-fractions" or "unity rule" is the mathematical test used to evaluate compliance with radiological criteria for license termination when more than one radionuclide has been determined to be potentially present. The unity rule is:

Equation3 C +- + C--2 C- *......

< 1 DCGLI DCGL2 DCGL.

Where: Cn = concentration of radionuclide n and DCGL, = DCGL of radionuclide n.

The results of the unity rule calculation for the radionuclides of concern in the statistical sample population for Survey Unit 9803-0000 are provided in Table 7 below.

Table 7 - Results of Unity Calculation for Subsurface Soil Samples Comprising the Statistical Sample Population (3)

Sample Number Fraction of the Operational DCGL(l) Unit Cs-137 Sr-90 9803-0000-00IF 0.005 - 0.005 9803-0000-002F - 0.016 0.016 9803-0000-003F - -

9803-0000-004F - -

9803-0000-005F - -

9803-0000-007F - -

9803-0000-008F - -

9803-0000-009F - 0.016 0.016 9803-0000-OO1OF - -

9803-0000-0011F - -

9803-0000-0012F - -

9803-0000-0013F - -

9803-0000-0014F - -

9803-0000-0015F - 0.048 0.048 9803-0000-0016F - 0.017 0.017 (1) The Operational DCGL is 5.38 pCi/g for Cs-137 and 1.05 pCi/g for Sr-90 to achieve seventeen (17) mrem/yr TEDE respectively.

(2) "-" indicate that the radionuclide was not positively detected in the sample.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD

7. QUALITY CONTROL The off-site laboratory processed the split samples and performed gamma spectroscopy analysis. Thirteen percent (13%) 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 FinalStatus Survey ".

Cs-137 was not detected in sufficient quantities in the field split results at locations 9803-0000-001 or 9803-0000-014 to evaluate in accordance with procedure. Evaluation using the reported results for naturally occurring K-40 resulted in acceptable agreement between the field-split results at these locations.

The sample analysis vendor, GEL, maintains quality control and quality assurance plans as part of normal operation. Refer to Attachment 3 for data and data quality analysis results.

8. INVESTIGATIONS AND RESULTS No investigations were conducted within this survey unit.

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.

10. CHANGES FROM THE FINAL STATUS SURVEY PLAN During the performance of the survey, it was discovered that one (1) of the fifteen (15) sample locations identified for non-parametric testing were deemed to be inaccessible due to the presence of a steep bank which prevented GeoProbe travel.

The location identified was 9803-0000-006F. Subsequently, an addendum to the FSS plan was issued denoting an additional random sample measurement location to replace the location that was deemed to be inaccessible.

11. DATA QUALITY ASSESSMENT (DQA)

The DQO sample design and data were reviewed in accordance with Procedure RPM 5.1-23, "DataQuality 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.

Revision 0 17

SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD 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 C.

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. Therefore, the survey unit meets the unrestricted release criteria. The basic statistical quantities for the statistical sample population are provided below in Table 8.

Table 8- Basic Statistical Quantities for Cs-137 and Sr-90 from the Final Status Survey Cs-137 Sr-90 pCi/g pCi/g DCGLop: 5.38E+00 1.05E+00 Minimum Value: -1.45E-02 -1.73E-02 Maximum Value: 2.8 1E-02 2.02E-02 Mean: 7.16E-03 1.71E-03 Median: 7.78E-03 1.93E-03 Standard Deviation: 1.20E-02 9.57E-03 Co-60 was not positively detected in any of the samples collected for non-parametric statistical testing. Cs-137 was positively identified in only one (1) of the samples collected for non-parametric statistical testing. Subsequently, a statistical analysis of the data sets for any of these radionuclides would provide no useful information.

For Sr-90, 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 about 23% 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 calculated skew of 1.26.

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

12. ANOMALIES No anomalies were noted.

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD

13. CONCLUSION Subsurface soils Survey Unit 9803-0000 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 was not required.

All positively identified radionuclides of concern were used for statistical testing to determine the adequacy of the survey unit for FSS.

The sample data passed the Sign Test. The null hypothesis was rejected. The survey unit is properly designated as Class C.

The dose contribution from soil is 0.14 mrem/yr TEDE based on the average radionuclide concentrations in 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 no underground structures, foundations or footings 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 2.14 mrem/yr TEDE. Therefore, Survey Unit 9803-0000 is acceptable for unrestricted release.

14. ATTACHMENTS 14.1 Attachment 1 - Survey Unit Location Map 14.3 Attachment 2 - Laboratory Results 14.4 Attachment 3 - DQA Results Revision 0 19

SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD ATTACHMENT 1 (FIGURES)

Revision 0

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD ATTACHMENT 2 (LABORATORY DATA)

Revision 0

General Narrative Page 1 of 81

General Narrative for Connecticut Yankee Atomic Power Co.

Work Order: 184030 SDG: MSR#07-0145 April 16,2007 Laboratory Identification:

GEL Laboratories LLC 2040 Savage Road Charleston, South Carolina 29407 (843) 556-8171 Summary Sample receipt The samples arrived at GEL Laboratories LLC, Charleston, South Carolina on April 12, 2007 for analysis.

Shipping container temperatures were checked, documented, and within specifications. The samples were delivered with proper chain of custody documentation and signatures. All sample containers arrived without any visible signs of tampering or breakage.

Sample Identification The laboratory received the following samples:

Laboratory Sample Identification Description 184030001 9803-0000-001F 184030002 9803-0000-00IFS 184030003 9803-0000-002F 184030004 9803-0000-003F 184030005 9803-0000-004F 184030006 9803-0000-005F 184030007 9803-0000-007F 184030008 9803-0000-008F 184030009 9803-0000-009F 184030010 9803-0000-01OF 184030011 9803-0000-01 IF 184030012 9803-0000-012F 184030013 9803-0000-013F 184030014 9803-0000-014F 184030015 9803-0000-014FS 184030016 9803-0000-015F 184030017 9803-0000-016F Items of Note There are no items to note.

Case Narrative GEL Laboratories Rge 2 P(9t*I0712 Charleston, SC 29417 2040 Savage Road Charlestnn. SC 29407 P843.556.8171 F 843.766.1178 www.gel.com

Sample analyses were conducted using methodology as outlined in GEL Laboratories, LLC (GEL) Standard Operating Procedures. Any technical or administrative problems during analysis, data review, and reduction are contained in the analytical case narratives in the enclosed data package.

Analytical Request Fifteen samples were analyzed for FSSGAM and Strontium 90. Two samples were analyzed for FSSALL.

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

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

Project Manager GEL Laboratories Pige 3PPO P30712 Chadeston, SC 29417 2040 Savage Road Chafston, SC 29407 P843.556.8171 F 843.765.1178 www, gol.com

List of current GEL Certifications as of 16 April 2007 State Certification Alaska UST-062 Arizona AZ0668 Arkansas 88-0651 CLIA 42D0904046 California 01 151CA Colorado GenEngLabs Connecticut PH-0169 Dept. of Navy NFESC 413 EPA WG-15J Florida/NELAP E87156 Georgia E87156 (FL/NELAP)

Hawaii N/A Idaho N/A Illinois 200029 Indiana C-SC-01 Kansas E-10332 Kentucky 90129 Louisiana 03046 Maryland 270 Massachusetts M-SC012 Michigan 9903 Nevada SC12 New Jersey SCO02 New Mexico FL NELAP E87156 New York 11501 North Carolina 233 North Carolina Drinking W 45709 North Dakota R-158 Oklahoma 9904 Pennsylvania 68-00485 South Carolina 10120001/10585001/10120002 Tennessee 02934 Texas NELAP T1 04704235-06-TX U.S. Dept. of Agriculture S-52597 US Army Corps of Engineer N/A Utah 8037697376 GEL Vermont VT87156 Virginia 00151 Washington C1641 Page 4 of 81

Chain of Custody and Supporting Documentation Page 5 of 81

Connecticut Yankee Atomic Power Company Chain of Custody Form 362 Injun Hollow Road, East Hampton. CT 06424 No. 2007-00124 860-267-2556 Project Name: Haddam Neck Decommissioning Analyses Requested Lab Use Only Contact Name &860-267-3924 Phone: Comments:

Jack McCarthy Media Sample Container Code Type Size-Analytical Lab (Name, City, State): Code &Type General Engineering Laboratories Code 2040 Savage Road Charleston, SC 29407 ATT: Cheryl Jones (843-556-8171)

Priority: [] 30 D. [] 14 D. 0 7 D.

Other:

Sample Designation Date Time 0 Comment, Preservation Lab Sample ID 9803-0000-OOIF 4/10/07 1007 TS C BP X 9803-0000-00 IFS 4/10/07 1007 TS C BP X 9803-0000-002F 4/10/07 0756 TS C BP X 9803-0000-003F 4/9/07 1500 TS C BP X 9803-0000-004F 4/10/07 0950 TS C BP X 9803-0000-005F 4/10/07 0736 TS C BP X 9803-0000-007F 4/9/07 1035 TS C BP X 9803-0000-008F 4/9/07 1340 TS C BP X 9803-0000-009F 4/9/07 1130 TS C BP X 9803-0000-01OF 4/9/07 1435 TS C BP X 9803-0000-01 IF 4/9/07 1540 TS C BP X NOTES: PO #: 002332 MSR #: 07-0145 U QA LTP [] Radwaste QA D Non QA Samples Shipped Via: Internal Container El Fed Ex Temp.: __ 1 __eg. C LI ups Custody Sealed?

1)Rel* ed ~B. Dae/Time 2) Received By Date/Time IE Hand Custody Seal Intact?

z /0 -7 L6' 7-

" ,.c . L Other

3) Relinquished By Date/Time 4) Received By Date/Time Y,/

Y N Z Bill of Lading #

5) Relinquished By Date/Time 6) Received By Date/Time

Connecticut Yankee Atomic Power Company Chain of Custody Form 362 Injun Hollow Road, East Hampton, CT 06424 No. 2007-00125 860-267-2556 Project Name: Haddam Neck Decommissioning Analyses Requested Lab Use Only Contact Name & Phone: Comments:

Jack McCarthy 860-267-3924 Media Sample Container Code Type Size-Analytical Lab (Name, City, State): Code &Type General Engineering Laboratories Code 2040 Savage Road Charleston, SC 29407 ATT: Cheryl Jones (843-556-8171)

Priority: Li 30 D. Li 14 D. M 7 D.

Other: ____

Sample Designation Date Time 0 / Comment, Preservation Lab Sample ID 9803-0000-012F 4/10/07 0821 TS C BP X 9803-0000-013F 4/9/07 1405 TS C BP X 9803-0000-014F 4/9/07 1525 TS C BP X 9803-0000-014FS 4/9/07 1525 TS C BP X 9803-0000-015F 4/9/07 1305 TS C BP X 9803-0000-016F 4/10/07 1323 TS C BP X NOTES: PO #: 002332 MSR #: 07-0145 M LTP QA EL Radwaste QA Li Non QA Samples Shipped Via: Internal Container 0 Fed Ex Temp.: J Deg. C EL ups F1 Hand Custody Sealed?

1) RelinqujiedBy d1ate/Time 2) Received By Date/Time Custody Seal Intact?

119-Q7 Ur)< -T?-, L- *4gL L 7 51 ELi Other

3) Relinquished By Date/Time 4) Received By Date/Time YQ-'_N P Bill of Lading #

5) Relinquished By Date/Time 6) Received By Date/Time

Connecticut Yankee Statement of Workfor Analytical Lab Services -CY-ISC-SOW-001 Figure 1. Sample Check-in List.

Date/Time Received: 1) C"" "

02?

SDOM: f~v o 1L OU'I5 pi4G4.P Work Order Number: /*L/O*3 /*4/c,3 i*L/(._Z lo6q2-9;

-~

Shipping Cdntainer IDL 221ft/ 9q,1-9 (.CC. Chain OfCustody# 'Q - OJ0/

C) : 4-, 7 -

I. Custody Seals oii shipping container intactT". -Yes [4JNo [

2. Custody Seals dated and signed? ".Yes J.io []

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

4. Cooler temperature 14

5. Vermiculite/packing materials-is: Wet[JDry_.

6: *Number of samples in shipping container: ; I t.

-. I

7. Sample holding times exc~eeded? Yes [ No-"[..-r

10. Were any anomalies identified in sample receipt? Yes JNo( <

II.. .Description of anomalies (include sample numbers):

Sample CustodiantLabcoratary: 7--~- -i' Date: 19~(

Telephoned to:_ . o

$2 Page 8 of 81

SAMPLE RECEIPT & REVIEW FORM

,*,kC,.'

PM use only Client: SDGARCOC/Work Order: 104C)2 /*/,3/ /IS1632.

Date Received: ";L - 7 PM(A) Revie ensure non-conb in tens are resolved prior to signing):

Received By:-S Sample Receipt Criteria Z, Comments/Qualifiers (Required for Non-Conforming Items)

Shipping containers received Circle Applicable: scals broken damaged container Ieaking container other (describe) intact and sealed? I Samples requiring cold Circle Coolant # ice bags blue ice dry ice none other descril 2 preservation within (4 +/- 2 C)? .

Record preservation method. .---

Chain of custody documents 3included with shipment?I 4 Sample containers intact and ircle Applicable: seals broken damaged container leaking container other (describe)

sealed?

Samples requiring chemical rample D1's. containers affeeted and observed pH:

preservation at proper pH? SampleInsandcontainersaffected:

VOA vials free of headspace ample IDs and containers affected:

6 (defined as < 6mm bubble)?

Are Encore containers present?

7 (If yes, immediately deliver to VOA laboratory) ... _,,,

8 Samples received within holding Id's and tests affected:

time? __mmm Sample ID's on COC match ID's sample To's and containers affected:

on bottles?

10 Date & time on COC match date Saple U's affected:

& time on bottles?_l_"_,,,

Number of containers received mple IDs affected:

match number indicated on COC?

COC form is properly signed in 12 relinquished/received sections?

c6-7C3 )7"1 7~ a l*

Air Bill ,Tracking #'s, & "Ci t. yi-,/.) ;1 t 74 14 Additional Comments V V* RSO RADReceipt I_____#_____

h ,, *If > x2 area background is observed on samples identified as "non-Suspected Hazard Information m . regulated/non-radioactive", contact the Radiation Safety group for fuirther investigation.

Radiological Classification? LMaximum Counts Observed*:

JPCB Regulated?

Shipped as DOT Hazardous tHardCssSip:

Material? If yes, contact Waste Class Shipped:

Manager or ESH Manager. UN#:

p lRegulated as a Foreign Soil? __

'tN ýbppmf) review of Hazard classification: Initials ______ Date:

Subject:

Samples From: "Rick E. Gault" <Gault@CYAPCO.com>

Date: Wed, 11 Apr 2007 09:14:03 -0400 To: "Cheryl Jones" <cj@gel.com>

Cheryl; We're sending the following samples (total 22 all in the same package) to GEL today. All of the samples have a 7 day TAT request. It is acceptable for GEL to use the traced/untraced Tc-99 process for these quick TAT requests. See attached COC for requested analyses.

Under MSR 07-0144 - 5 samples - Area 9514-0000 Under MSR 07-0145 - 17 samples - Area 9803-0000 Thanks; Rick Gault CYAPCO 860-267-3903 Content-Description: COC 07_00124_00125.pdf COC 07_00124_00125.pdf Content-Type: application/octet-streamr Content-Encoding: base64 i Content-Description: COC 07_00123.pdf COC 07_00123.pdf Content-Type: application/octet-stream Content-Encoding: base64 Page 10 of 81

Data Review Qualifier Definitions Page 11 of 81

Data Review Qualifier Definitions Qualifier Explanation

A quality control analyte recovery is outside of specified acceptance criteria

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

Result is greater than value reported A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL A The TIC is a suspected aldol-condensation product B Target analyte was detected in the associated blank B Metals-Either presence of analyte detected in the associated blank, or MDL/IDL < sample value < PQL BD Results are either below the MDC or tracer recovery is low C Analyte has been confirmed by GC/MS analysis D Results are reported from a diluted aliquot of the sample d 5-day BOD-The 2:1 depletion requirement was not met for this sample E Organics-Concentration of the target analyte exceeds the instrument calibration range E Metals-%difference of sample and SD is >10%. Sample concentration must meet flagging criteria H Analytical holding time was exceeded h Preparation or preservation holding time was exceeded J Value is estimated N Metals-The Matrix spike sample recovery is not within specified control limits N Organics-Presumptive evidence based on mass spectral library search to make a tentative identification of the analyte (TIC). Quantitation is based on nearest internal standard response factor N/A Spike recovery limits do not apply. Sample concentration exceeds spike concentration by 4X or more ND Analyte concentration is not detected above the reporting limit UI Gamma Spectroscopy-Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound Z Paint Filter Test-Particulates passed through the filter, however no free liquids were observed.

GEL Laboratories Pfige I*o YfO 712 Chadeston, SC 29417 2040 Savage Road Chamlestn,SC 29407 P843.556.8171 F843.756.1178 www.gel.com

RADIOLOGICAL ANALYSIS Page 13 of 81

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

Work Order 184030 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: 625064 Prep Batch Number: 624895 Dry Soil Prep GL-RAD-A-021 Batch Number: 624891 Sample ID Client ID 184030004 9803-0000-003F 184030013 9803-0000-013F 1201314145 Method Blank (MB) 1201314146 184030004(9803-0000-003F) Sample Duplicate (DUP) 1201314147 184030004(9803-0000-003F) Matrix Spike (MS) 1201314148 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL Laboratories LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-01 I REV# 15.

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.

Page 14 of 81

Quality Control (OC) Information:

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

Designated QC The following sample was used for QC: 184030004 (9803-0000-003F).

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

Technical Information:

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

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

Sample Re-prep/Re-analysis Samples were recounted due to detector error.

Miscellaneous Information:

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

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Page 15 of 81

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: 625065 Prep Batch Number: 624895 Dry Soil Prep GL-RAD-A-021 Batch Number: 624891 Sample ID Client ID 184030004 9803-0000-003F 184030013 9803-0000-013F 1201314155 Method Blank (MB) 1201314156 184030004(9803-0000-003F) Sample Duplicate (DUP) 1201314157 184030004(9803-0000-003F) Matrix Spike (MS) 1201314158 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL 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# 15.

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 (0C) Information:

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

Designated QC The following sample was used for QC: 184030004 (9803-0000-003F).

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

Page 16 of 81

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 detector error.

Miscellaneous Information:

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

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint Pu241, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Pu-Il -RC Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 626590 Prep Batch Number: 624895 Dry Soil Prep GL-RAD-A-021 Batch Number: 624891 Page 17 of 81

Sample ID Client ID 184030004 9803-0000-003F 184030013 9803-0000-013F 1201317873 Method Blank (MB) 1201317874 184030004(9803-0000-003F) Sample Duplicate (DUP) 1201317875 184030004(9803-0000-003F) Matrix Spike (MS) 1201317876 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL Laboratories LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-035 REV# 9.

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: 184030004 (9803-0000-003F).

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

Technical Information:

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

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

Sample Re-prep/Re-analysis Samples were reprepped due to high blank activity.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from Page 18 of 81

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.

Oualifier 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: 625519 Prep Batch Number: 624891 Sample ID Client ID 184030001 9803-0000-001 F 184030002 9803-0000-001 FS 184030003 9803-0000-002F 184030004 9803-0000-003F 184030005 9803-0000-004F 184030006 9803-0000-005F 184030007 9803-0000-007F 184030008 9803-0000-008F 184030009 9803-0000-009F 184030010 9803-0000-01OF 184030011 9803-0000-01 IF 184030012 9803-0000-012F 184030013 9803-0000-013F 184030014 9803-0000-014F 184030015 9803-0000-014FS 184030016 9803-0000-015F 184030017 9803-0000-016F 1201315240 Method Blank (MB) 1201315241 184030001(9803-0000-OO1F) Sample Duplicate (DUP) 1201315242 Laboratory Control Sample (LCS)

Page 19 of 81

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL Laboratories LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-013 REV# 14.

Calibration Information:

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

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

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

Quality Control (QC) Information:

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

Designated QC The following sample was used for QC: 184030001 (9803-0000-001F).

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.

Page 20 of 81

Oualifier information Qualifier Reason Analyte Sample UI Data rejected due to high peak width. Manganese-54 184030009 UI Data rejected due to interference. Europium-155 184030012 184030014 184030017 Manganese-54 184030014 U' Data rejected due to low abundance. Actinium-228 184030009 Bismuth-212 184030001 184030003 184030009 184030011 Cesium- 134 184030011 184030012 184030013 184030014 184030015 184030016 184030017 1201315241 Method/Analysis Information Page 21 of 81

Product: GFPC, Sr90, solid-ALL FSS Analytical Method: EPA 905.0 Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 624917 Prep Batch Number: 624895 Dry Soil Prep GL-RAD-A-021 Batch Number: 624891 Sample ID Client ID 184030001 9803-0000-00IF 184030002 9803-0000-001FS 184030003 9803-0000-002F 184030004 9803-0000-003F 184030005 9803-0000-004F 184030006 9803-0000-005F 184030007 9803-0000-007F 184030008 9803-0000-008F 184030009 9803-0000-009F 184030010 9803-0000-01OF 1201313721 Method Blank (MB) 1201313722 184029002(9514-0000-016J) Sample Duplicate (DUP) 1201313723 184029002(9514-0000-016J) Matrix Spike (MS) 1201313724 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL Laboratories LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-004 REV# 11.

Calibration Information:

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

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

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

Quality Control (QC) Information:

Blank Information Page 22 of 81

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

Designated QC The following sample was used for QC: 184029002 (9514-0000-016J).

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

Technical Information:

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

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

Sample Re-prep/Re-analysis Sample 184030001 (9803-0000-001F) was recounted due to a negative result greater than three times the error.

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

Miscellaneous Information:

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

Additional Comments Samples were dried and reweighed due to low matrix spike recovery.

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Page 23 of 81

Product: GFPC, Sr90, solid-ALL FSS Analytical Method: EPA 905.0 Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 624928 Prep Batch Number: 624895 Dry Soil Prep GL-RAD-A-021 Batch Number: 624891 Sample ID Client ID 184030011 9803-0000-01 IF 184030012 9803-0000-012F 184030013 9803-0000-013F 184030014 9803-0000-014F 184030015 9803-0000-014FS 184030016 9803-0000-015F 184030017 9803-0000-016F 1201313741 Method Blank (MB) 1201313742 184030011(9803-0000-011 F) Sample Duplicate (DUP) 1201313743 184030011(9803-0000-01 IF) Matrix Spike (MS) 1201313744 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL Laboratories LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-004 REV# 11.

Calibration Information:

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

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

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

Quality Control (OC) Information:

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

Designated QC Page 24 of 81

The following sample was used for QC: 184030011 (9803-0000-01 IF).

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.

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: 625122 Sample ID Client ID 184030004 9803-0000-003F 184030013 9803-0000-013F 1201314276 Method Blank (MB) 1201314277 184030004(9803-0000-003F) Sample Duplicate (DUP) 1201314278 184030004(9803-0000-003F) Matrix Spike (MS) 1201314279 Laboratory Control Sample (LCS)

Page 25 of 81

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL Laboratories LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-005 REV# 14.

Calibration Information:

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

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

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

Quality Control (QC) Information:

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

Designated QC The following sample was used for QC: 184030004 (9803-0000-003F).

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

Technical Information:

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

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

Sample Re-prep/Re-analysis Sample 184030004 (9803-0000-003F) was recounted due to a suspected blank false positive.

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.

Page 26 of 81

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: 625115 Prep Batch Number: 624895 Dry Soil Prep GL-RAD-A-021 Batch Number: 624891 Sample ID Client ID 184030004 9803-0000-003F 184030013 9803-0000-013F 1201314267 Method Blank (MB) 1201314268 184030004(9803-0000-003F) Sample Duplicate (DUP) 1201314269 184030004(9803-0000-003F) Matrix Spike (MS) 1201314270 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL Laboratories LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-040 REV# 4.

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.

Page 27 of 81

Designated QC The following sample was used for QC: 184030004 (9803-0000-003F).

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

Technical Information:

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

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

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

Miscellaneous Information:

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information 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: 625116 Prep Batch Number: 624895 Dry Soil Prep GL-RAD-A-021 Batch Number: 624891 Page 28 of 81

Sample ID Client ID 184030004 9803-0000-003F 184030013 9803-0000-013F 1201314272 Method Blank (MB) 1201314273 184030004(9803-0000-003F) Sample Duplicate (DUP) 1201314274 184030004(9803-0000-003F) Matrix Spike (MS) 1201314275 Laboratory Control Sample (LCS)

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

Calibration Information:

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

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

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

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: 184030004 (9803-0000-003F).

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

Technical Information:

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

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

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

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from Page 29 of 81

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 - 3 pCi/g Analytical Method: EPA 906.0 Modified Analytical Batch Number: 625106 Sample ID Client ID 184030004 9803-0000-003F 184030013 9803-0000-013F 1201314248 Method Blank (MB) 1201314249 184030004(9803-0000-003F) Sample Duplicate (DUP) 1201314250 184030004(9803-0000-003F) Matrix Spike (MS) 1201314251 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL Laboratories LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-002 REV# 14.

Calibration Information:

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

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

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

Quality Control (0C) Information:

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

Page 30 of 81

Designated QC The following sample was used for QC: 184030004 (9803-0000-003F).

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

Technical Information:

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

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

Sample Re-prep/Re-analysis Samples were recounted due to a suspected blank false positive.

Miscellaneous Information:

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint C14, Solid AII,FSS Analytical Method: EPA EERF C-01 Modified Analytical Batch Number: 625109 Sample ID Client ID 184030004 9803-0000-003F 184030013 9803-0000-013F 1201314252 Method Blank (MB) 1201314253 184030004(9803-0000-003F) Sample Duplicate (DUP) 1201314254 184030004(9803-0000-003F) Matrix Spike (MS) 1201314255 Laboratory Control Sample (LCS)

Page 31 of 81

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by GEL Laboratories LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-003 REV# 9.

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: 184030004 (9803-0000-003F).

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

Technical Information:

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

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

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

Miscellaneous Information:

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

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

Page 32 of 81

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:

Reviewer/Date: q "di A Y// j/6 -)

Page 33 of 81

SAMPLE DATA

SUMMARY

Page 34 of 81

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

Client SDG: MSR#07-0145 GEL Work Order: 184030 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 GEL Laboratories LLC standard operating procedures. Please direct any questions to your Project Manager, Cheryl Jones.

Reviewed by Page 35 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-001F Project: YANK01204 Sample ID: 184030001 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 10-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 8.54%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.522 +/-0.132 0.0454 +/-0.132 0.0908 pCi/g MJHI 04/16/07 1356 625519 Americium-241 U 0.026 +/-0.0682 0.0557 +/-0.0682 0.111 pCi/g Bismuth-212 UI 0.00 +/-0.167 0.131 +/-0.167 0.263 pCi/g Bismuth-214 0.459 +/-0.0869 0.0247 +/-0.0869 0.0494 pCi/g Cesium-134 U 0.0223 +/-0.0275 0.017 +/-0.0275 0.0339 pCi/g Cesium-137 0.0281 +/-0.0239 0.0128 +/-0.0239 0.0255 pCi/g Cobalt-60 U 0.00538 +/-0.0175 0.0153 +/-0.0175 0.0306 pCi/g Europium-152 U 0.0238 +/-0.0609 0.0381 +/-0.0609 0.0761 pCi/g Europium-154 U 0.0124 +/-0.0562 0.0423 +/-0.0562 0.0844 pCi/g Europium-155 U -0.0291 +/-0.0519 0.0413 +/-0.0519 0.0825 pCi/g Lead-212 0.547 +/-0.0594 0.022 +/-0.0594 0.0439 pCi/g Lead-214 0.496 +/-0.0742 0.0269 +/-0.0742 0.0537 pCi/g Manganese-54 U 0.00646 +/-0.0156 0.014 +/-0.0156 0.028 pCi/g Niobium-94 U 0.0109 +/-0.017 0.0132 +/-0.017 0.0263 pCi/g Potassium-40 12.0 +/-0.987 0.113 +/-0.987 0.226 pCi/g Radium-226 0.459 +/-0.0869 0.0247 +/-0.0869 0.0494 pCi/g Silver-108m U 0.00418 +/-0.0141 0.0124 +/-0.0141 0.0247 pCi/g Thallium-208 0.168 +/-0.0297 0.0127 +/-0.0297 0.0254 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.00254 +/-0.0217 0.0179 +/-0.0217 0.041 pCi/g KSDI 04/18/07 1525 624917 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 2 EPA 905.0 Modified 3 EPA 905.0 Modified Page 36 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-OO1F Project: YANK01204 Sample ID: 184030001 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1A Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr9O, solid-ALL FSS 70 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the target analyte was detected in the associated blank.

3D 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 ND Analyte concentration is not detected above the detection limit 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.

Page 37 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-OOFS Project: YANKO 1204 Sample ID: 184030002 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 10-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 8.74%

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

Rad Gamma Spec Analysis Gamma,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.441 +/-0.192 0.0975 +/-0.192 0.195 pCi/g MJHI 04/16/07 1346 625519 Americium-241 U 0.0438 +/-0.0394 0.034 +/-0.0394 0.068 pCi/g Bismuth-212 U 0.356 +/-0.284 0.193 +/-0.284 0.387 pCi/g Bismuth-214 0.454 +/-0.139 0.0474 +/-0.139 0.0948 pCi/g Cesium-134 U 0.0184 +/-0.0344 0.0312 +/-0.0344 0.0624 pCi/g Cesium-137 U 0.00265 +/-0.0301 0.027 +/-0.0301 0.0539 pCi/g Cobalt-60 U 0.0103 +/-0.0313 0.0278 +/-0.0313 0.0556 pCi/g Europium-152 U 0.0696 +/-0.0874 0.0603 +/-0.0874 0.121 pCi/g Europium-154 U -0.0354 +/-0.120 0.0848 +/-0.120 0.170 pCi/g Europium-155 U 0,0312 +/-0.0599 0.0553 +/-0.0599 0.111 pCi/g Lead-212 0.534 +/-0.0821 0.0323 +/-0.0821 0.0646 pCi/g Lead-214 0.490 +/-0.108 0.0389 +/-0.108 0.0778 pCi/g Manganese-54 U -0.00404 +/-0.0326 0.024 +/-0.0326 0.0479 pCi/g Niobium-94 U -0.00401 +/-0.0293 0.0256 +/-0.0293 0.0512 pCi/g Potassium-40 9.42 +/-1.09 0.185 +/-1.09 0.369 pCi/g Radium-226 0.454 +/-0.139 0.0474 +/-0.139 0.0948 pCi/g Silver-108m U -0.0079 +/-0.0282 0.0206 +/-0.0282 0.0411 pCi/g Thallium-208 0.191 +/-0.0682 0.0192 +/-0.0682 0.0385 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.0101 +/-0.0198 0.0157 +/-0.0198 0,0345 pCi/g KSDI 04/16/07 2259 624917 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 04/12/07 1117 624891 The following Analytical Methods were performed Method Description 1 EML HASL 300,4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 38 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-OO1FS Project: YANK01204 Sample ID: 184030002 Client ID: YANKOO Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1A Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 79 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 39 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-002F Proiect: YANK01204 Sample ID: 184030003 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 10-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 6.12%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1A Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.422 +/-0.158 0.0503 +/-0.158 0.101 pCi/g MJHI 04/16/07 1440 625519 Americium-241 U 0.0648 +/-0.0635 0.0541 +/-0.0635 0.108 pCi/g Bismuth-212 UI 0.00 +/-0.234 0.155 +/-0.234 0.309 pCi/g Bismuth-214 0.421 +/-0.0829 0.0295 +/-0.0829 0.059 pCi/g Cesium-134 U 0.0333 +/-0.0182 0.0178 +/-0.0182 0.0355 pCi/g Cesium-137 U 0.0112 +/-0.019 0.0162 +/-0.019 0.0324 pCi/g Cobalt-60 U 0.0171 +/-0.0199 0.0184 +/-0.0199 0.0367 pCi/g Europium-152 U -0.0306 +/-0.0576 0.0402 +/-0.0576 0.0803 pCi/g Europium-154 U 0.0194 +/-0.0599 0.0525 +/-0.0599 0.105 pCi/g Europium-155 U -0.0039 +/-0.0488 0.044 +/-0.0488 0.088 pCi/g Lead-21 2 0.505 +/-0.0612 0.0234 +/-0.0612 0.0468 pCi/g Lead-214 0.541 +/-0.0817 0.0279 +/-0.0817 0.0557 pCi/g Manganese-54 U -0.00497 +/-0.0165 0.0142 +/-0.0165 0.0283 pCi/g Niobium-94 U3.510E-05 +/-0.019 0.014 +/-0.019 0.0279 pCi/g Potassium-40 7.87 +/-0.800 0.141 +/-0.800 0.281 pCi/g Radium-226 0.421 +/-0.0829 0.0295 +/-0.0829 0.059 pCi/g Silver-108m U -0.00423 +/-0.0151 0.013 +/-0.0151 0.026 pCi/g Thallium-208 0.186 +/-0.0422 0.0135 +/-0.0422 0.027 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr90, solid-ALL FSS Strontium-90 U 0.017 +/-0.017 0.0126 +/-0.0171 0.0282 pCi/g KSD1 04/16/07 2259 624917 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 40 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-002F Project: YANK01204 Sample ID: 184030003 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1A Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 83 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 41 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-003F Proiect: YANK01204 Sample ID: 184030004 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 9.22%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Alpha Spec Analysis Alphaspec Am241, Cm, Solid ALL FSS Americium-241 U 0.121 +/-0.160 0.0819 +/-0.160 0.257 pCi/g BXL1 04/16/07 1247 625064 Curium-242 U 0.0356 +/-0.0698 0.00 +/-0.0699 0.0965 pCi/g Curium-243/244 U -0.0828 +/-0.0513 0.0979 +/-0.0523 0.289 pCi/g Alphaspec Pu, Solid-ALL FSS 0.131 Plutonium-238 U -0.012 +/-0.0517 0.0317 +/-0.0517 pCi/g BXLI 04/16/07 1247 625065 Plutonium-239/240 U 0.0569 +/-0.0871 0.0388 +/-0.0873 0.145 pCi/g Liquid Scint Pu241, Solid-ALL FSS Plutonium-241 U -1.17 +/-4.67 3.98 +/-4.67 8.40 pCi/g GXRI 04/19/07 1228 626590 Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.922 +/-0.271 0.106 +/-0.271 0.212 pCi/g MJHI 04/16/07 1450 625519 Americium-241 U 0.00981 +/-0.0627 0.0516 +/-0.0627 0.103 pCi/g Bismuth-212 0.607 +/-0.462 0.215 +/-0.462 0.430 pCi/g Bismuth-214 0.692 +/-0.165 0.0637 +1-0.165 0.127 pCi/g Cesium-134 U 0.0423 +/-0.0464 0.0384 +/-0.0464 0.0768 pCi/g Cesium-137 U 0.0258 +/-0.0407 0.033 +/-0.0407 0.066 pCi/g Cobalt-60 U 0.0202 +/-0.0404 0.0357 +/-0.0404 0.0713 pCi/g Europium-152 U 0.0105 +/-0.109 0.0744 +/-0.109 0.149 pCi/g Europium-154 U -0.0589 +/-0.111 0.0873 +/-0.111 0.175 pCi/g Europium-155 U 0.0995 +/-0.0976 0.0745 +/-0.0976 0.149 pCi/g Lead-212 0.812 +/-0.109 0.0438 +/-0.109 0.0876 pCi/g Lead-214 0.744 +/-0.154 0.0528 +/-0.154 0.106 pCi/g Manganese-54 U 0.0104 +/-0.0402 0.0323 +/-0.0402 0.0645 pCi/g Niobium-94 U -0.0298 +/-0.036 0.0283 +/-0.036 0.0566 pCi/g Potassium-40 10.4 +/-1.22 0.304 +/-1.22 0.608 pCi/g Radium-226 0.692 +/-0.165 0.0637 +/-0.165 0.127 pCi/g Silver-108m U -0.00128 +/-0.0314 0.0274 +/-0.0314 0.0548 pCi/g Thallium-208 0.248 +/-0.0812 0.032 +/-0.0812 0.064 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr90, solid-ALL FSS Strontium-90 U -0.015 +/-0.0165 0.0153 +/-0.0165 0.0335 pCi/g KSD1 04/16/07 2259 624917 Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid - 3 pCi/g Tritium U -0.565 +/-1.03 0.892 +/-1.03 1.87 pCi/g AXD2 04/17/07 1535 625106 Page 42 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com E Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-003F Project: YANK01204 Sample ID: 184030004 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Liquid Scintillation Analysis Liquid Scint C14, Solid AllFSS Carbon-14 U -0.0433 +/-0.0989 0.0838 +/-0.0989 0.171 pCi/g AXD2 04/13/07 2210 625109 Liquid Scint Fe55, Solid-ALL FSS Iron-55 U -13.4 +/-24.1 17.2 +/-24.1 36.5 pCi/g MXPI 04/16/07 2015 625115 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 U -6.58 +/-9.20 8.00 +/-9.20 16.7 pCi/g MXP1 04/16/07 2212 625116 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U 0.325 +/-0.260 0.210 +/-0.261 0.433 pCi/g MXPI 04/18/07 0803 625122 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Pu-I 1-RC Modified 3 DOE EML HASL-300, Pu- 11-RC Modified 4 DOE EML HASL-300, Pu-I 1-RC Modified 5 DOE EML HASL-300, Pu-I -RC Modified 6 EML HASL 300,4.5.2.3 7 EPA 905.0 Modified 8 EPA 906.0 Modified 9 EPA EERF C-01 Modified 10 DOE RESL Fe-I, Modified 11 DOE RESL Ni-1, Modified 12 DOE EML HASL-300, Tc-02-RC Modified 13 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Americium-243 Tracer Alphaspec Am241, Cm, Solid ALl 86 (15%-125%)

Plutonium-242 Tracer Alphaspec Pu, Solid-ALL FSS 106 (15%-125%)

Plutonium-242 Tracer Liquid Scint Pu241, Solid-ALL F5 94 (25%-125%)

Strontium Carrier GFPC, Sr90, solid-ALL FSS 85 (25%-125%)

(15%-125%)

Page 43 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-003F Project: YANKO1204 Sample ID: 184030004 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch IN Iron-59 Tracer Liquid Scint Fe55, Solid-ALL FS 75 Nickel Carrier Liquid Scint Ni63, Solid-ALL FS 87 (25%-125%)

Technetium-99m Tracer Liquid Scint Tc99, Solid-ALL FS 85 (15%-125%)

Notes:

The Qualifiers in this report are defined as follows

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 44 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-004F Project: YANK01204 Sample ID: 184030005 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 10-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 6.62%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Gamma Spec Analysis Gamma,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.685 +/-0.184 0.0679 +/-0.184 0.136 pCi/g MJHI 04/16/07 1451 625519 Americium-241 U 0.0419 +/-0.0359 0.0313 +/-0.0359 0.0626 pCi/g Bismuth-212 U 0.396 +/-0.357 0.225 +/-0.357 0.450 pCi/g Bismuth-214 0.576 +/-0.130 0.0369 +/-0.130 0.0737 pCi/g Cesium-134 U 0.0305 +/-0.0287 0.0269 +/-0.0287 0.0538 pCi/g Cesium-137 U -0.0145 +/-0.0298 0.0203 +/-0.0298 0.0405 pCi/g Cobalt-60 U 0.00928 +/-0.0272 0.0239 +/-0.0272 0.0477 pCi/g Europium-152 U 0.0399 +/-0.0678 0.053 +/-0.0678 0.106 pCi/g Europium-154 U -0.0365 +/-0.0831 0.0658 +/-0.0831 0.132 pCi/g Europium-155 U 0.0351 +/-0.0512 0.048 +/-0.0512 0.0959 pCi/g Lead-212 0.652 +/-0.0918 0.0294 +/-0.0918 0.0587 pCi/g Lead-214 0.547 +/-0.0957 0.0369 +/-0.0957 0.0738 pCi/g Manganese-54 U -0.00283 +/-0.0226 0.0195 +/-0.0226 0.0389 pCi/g Niobium-94 U -0.0158 +/-0.0228 0.0179 +/-0.0228 0.0357 pCi/g Potassium-40 9.82 +1-1.13 0.171 +/-1.13 0.342 pCi/g Radium-226 0.576 +/-0.130 0.0369 +/-0.130 0.0737 pCi/g Silver-108m U 0.00352 +/-0.0206 0.0183 +/-0.0206 0.0366 pCi/g Thallium-208 0.202 +/-0.0516 0.0209 +/-0.0516 0.0417 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U -0.0113 +/-0.0135 0.0125 +/-0.0135 0.0278 pCilg KSDI 04/16/07 2259 624917 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 45 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-004F Project: YANKO01204 Sample ID: 184030005 Client Vol. Recv.: YANK001 ID:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1N Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 89 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

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

Page 46 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-005F Project: YANK01204 Sample ID: 184030006 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 10-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 9.22%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.421 +/-0.226 0.0834 +/-0.226 0.167 pCi/g MJH1 04/16/07 1451 625519 Americium-241 U 0.0233 +/-0.0377 0.0337 +/-0.0377 0.0673 pCi/g Bismuth-212 0.624 +/-0.364 0.211 +/-0.364 0.421 pCi/g Bismuth-214 0.401 +/-0.103 0.0416 +/-0.103 0.0832 pCi/g Cesium-134 U 0.0443 +/-0.0339 0.0267 +/-0.0339 0.0533 pCi/g Cesium-137 U 0.00778 +/-0.036 0.0273 +/-0.036 0.0547 pCi/g Cobalt-60 U -0.0173 +/-0.0315 0.0236 +/-0.0315 0.0472 pCi/g Europium-152 U 0.0761 +/-0.0589 0.0607 +/-0.0589 0.121 pCi/g Europium-154 U -0.0196 +/-0.0908 0.073 +/-0.0908 0.146 pCi/g Europium-155 U 0.0396 +/-0.0698 0.0506 +/-0.0698 0.101 pCi/g Lead-212 0.456 +/-0.0713 0.0306 +/-0.0713 0.0611 pCi/g Lead-214 0.424 +/-0.107 0.0391 +/-0.107 0.0781 pCi/g Manganese-54 U 0.0104 +/-0.0288 0.026 +/-0.0288 0.052 pCi/g Niobium-94 U 0.0311 +/-0.032 0.0266 +/-0.032 0.0531 pCi/g Potassium-40 6.76 +/-1.07 0.222 +/-1.07 0.444 pCi/g Radium-226 0.401 +/-0.103 0.0416 +/-0.103 0.0832 pCi/g Silver-108m U 0.0114 +/-0.023 0.0212 +/-0.023 0.0423 pCi/g Thallium-208 0.164 +/-0.0521 0.0234 +/-0.0521 0.0467 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.00363 +/-0.0162 0.0132 +/-0.0162 0.0296 pCi/g KSD1 04/16/07 2259 624917 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 04/12/07 1117 624891 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 47 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-005F Project: YANK01204 Sample ID: 184030006 Client ID: YANKOOI Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch IN Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 80 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 48 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-007F Project: YANK01204 Sample ID: 184030007 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 5.46%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.559 +/-0.145 0.0558 +1-0.145 0.112 pCi/g MJHI 04/16/07 1457 625519 Americium-241 U 0.0269 +/-0.0631 0.0537 +/-0.0631 0.107 pCi/g Bismuth-212 U 0.271 +/-0.222 0.141 +/-0.222 0.283 pCi/g Bismuth-214 0.539 +/-0.0934 0.0339 +/-0.0934 0.0678 pCi/g Cesium-134 U 0.0235 +/-0.0249 0.0206 +/-0.0249 0.0412 pCi/g Cesium-137 U 0.0149 +/-0.0199 0.0179 +/-0.0199 0.0359 pCi/g Cobalt-60 U 0.00193 +/-0.0213 0.0181 +/-0.0213 0.0362 pCi/g Europium-152 U -0.0105 +/-0.0626 0.0485 +/-0.0626 0.097 pCi/g Europium-154 U -0.0341 +/-0.0731 0.0491 +/-0.0731 0.0982 pCi/g Europium-155 U 0.0245 +/-0.055 0.0513 +/-0.055 0.103 pCi/g Lead-212 0.598 +/-0.070 0.0273 +/-0.070 0.0546 pCi/g Lead-214 0.683 +/-0.100 0.0339 +/-0.100 0.0678 pCi/g Manganese-54 U -0.00765 +/-0.0212 0.0182 +/-0.0212 0.0364 pCi/g Niobium-94 U 0.00682 +/-0.0191 0.0167 +/-0.0191 0.0333 pCi/g Potassium-40 9.66 +/-0.929 0.139 +/-0.929 0.278 pCi/g Radium-226 0.539 +/-0.0934 0.0339 +/-0.0934 0.0678 pCi/g Silver-108m U 0.00375 +/-0.0179 0.0161 +/-0.0179 0.0321 pCi/g Thallium-208 0.190 +/-0.0441 0.0161 +/-0.0441 0.0323 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U -0.00593 +/-0.0163 0.0143 +/-0.0163 0.0319 pCi/g KSD1 04/16/07 2300 624917 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 49 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-007F Project: YANK01204 Sample ID: 184030007 Client ID: YANKOOl Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 77 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 50 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-008F Project: YANK01204 Sample ID: 184030008 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 5.92%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Gamma Spec Analysis Gamma,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.511 +/-0.194 0.100 +/-0.194 0.200 pCi/g MJHI 04/16/07 1548 625519 Americium-241 U 0.0327 +/-0.039 0.0336 +/-0.039 0.0671 pCi/g Bismuth-212 U 0.311 +/-0.394 0.176 +/-0.394 0.352 pCi/g Bismuth-214 0.490 +/-0.106 0.0403 +/-0.106 0.0805 pCi/g Cesium-134 U 0.0548 +/-0.0399 0.0321 +/-0.0399 0.0642 pCi/g Cesium-137 U -0.0029 +/-0.0293 0.0259 +/-0.0293 0.0518 pCi/g Cobalt-60 U -0.00875 +/-0.042 0.0288 +/-0.042 0.0575 pCi/g Europium-152 U -0.019 +/-0.0839 0.0552 +/-0.0839 0.110 pCi/g Europium-154 U -0.0513 +/-0.0975 0.0755 +/-0.0975 0.151 pCi/g Europium-155 U -0.0129 +/-0.0546 0.0492 +/-0.0546 0.0984 pCi/g Lead-212 0.505 +/-0.0751 0.0296 +/-0.0751 0.0592 pCi/g Lead-214 0.465 +/-0.118 0.0411 +/-0.118 0.0822 pCi/g Manganese-54 U-0.000797 +/-0.0274 0.0239 +/-0.0274 0.0478 pCi/g Niobium-94 U 0.015 +/-0.0271 0.0253 +/-0.0271 0.0505 pCi/g Potassium-40 8.41 +/-1.11 0.197 +/-1.11 0.394 pCi/g Radium-226 0.490 +/-0.106 0.0403 +/-0.106 0.0805 pCi/g Silver-108m U -0.0227 +/-0.0228 0.0182 +/-0.0228 0.0363 pCi/g Thallium-208 0.219 +/-0.0554 0.0235 +/-0.0554 0.047 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U -0.0108 +/-0.0154 0.014 +/-0.0154 0.0312 pCi/g KSD1 04/16/07 2300 624917 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 51 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-008F Proiect: YANKO 1204 Sample ID: 184030008 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 79 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 52 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-009F Project: YANKO 1204 Sample ID: 184030009 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 2.1%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 UI 0.00 +/-0.236 0.166 +/-0.236 0.331 pCi/g MJHI 04/16/07 1554 625519 Americium-241 U 0.0542 +/-0.0431 0.0374 +/-0.0431 0.0747 pCi/g Bismuth-212 UI 0.00 +/-0.395 0.241 +1-0.395 0.481 pCi/g Bismuth-214 0.631 +/-0.134 0.0458 +/-0.134 0.0914 pCi/g Cesium-134 U 0.0204 +/-0.0598 0.0312 +/-0.0598 0.0624 pCi/g Cesium-137 U-0.000511 +/-0.0318 0.027 +/-0.0318 0.0539 pCi/g Cobalt-60 U 0.00338 +/-0.0291 0.0248 +/-0.0291 0.0496 pCi/g Europium-152 U -0.038 +/-0.0787 0.0602 +/-0.0787 0.120 pCi/g Europium-154 U -0.0213 +/-0.108 0.0748 +/-0.108 0.150 pCi/g Europium-155 U 0.0731 +/-0.0901 0.0595 +/-0.0901 0.119 pCi/g Lead-212 0.614 +/-0.0962 0.0381 +/-0.0962 0.0762 pCi/g Lead-214 0.774 +/-0.132 0.0451 +/-0.132 0.0902 pCi/g Manganese-54 UI 0.00 +/-0.0596 0.0259 +/-0.0596 0.0518 pCi/g Niobium-94 U -0.0033 +/-0.0273 0.0227 +/-0.0273 0.0454 pCi/g Potassium-40 10.4 +/-1.19 0.199 +/-1.19 0.398 pCi/g Radium-226 0.631 +/-0.134 0.0458 +/-0.134 0.0914 pCi/g Silver-108m U -0.00806 +/-0.0242 0.0206 +/-0.0242 0.0411 pCi/g Thallium-208 0.187 +/-0.0496 0.0262 +/-0.0496 0.0523 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.0164 +/-0.015 0.0107 +/-0.015 0.0243 pCi/g KSDI 04/16/07 2300 624917 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 04/12/07 1117 624891 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 53 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-009F Project: YANK01204 Sample ID: 184030009 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 86 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 54 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-01OF Project: YANK01204 Sample ID: 184030010 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 7.63%

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

Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.705 +/-0.143 0.0396 +/-0.143 0.0791 pCi/g MJHI 04/16/07 1844 625519 Americium-241 U 0.0646 +/-0.080 0.067 +/-0.080 0.134 pCi/g Bismuth-212 0.480 +/-0.159 0.0853 +/-0.159 0.170 pCi/g Bismuth-214 0.624 +/-0.0795 0.0216 +/-0.0795 0.0432 pCi/g Cesium-134 U 0.0258 +/-0.0175 0.0144 +/-0.0175 0.0287 pCi/g Cesium-137 U 0.0108 +/-0.0137 0.011 +/-0.0137 0.0219 pCi/g Cobalt-60 U -0.00421 +/-0.0134 0.011 +/-0.0134 0.0219 pCi/g Europium-152 U -0.0173 +/-0.0404 0.0307 +/-0.0404 0.0614 pCi/g Europium-154 U -0.0541 +/-0.043 0.0327 +/-0.043 0.0654 pCi/g Europium-155 U 0.0471 +/-0.0447 0.0368 +/-0.0447 0.0736 pCi/g Lead-212 0.712 +/-0.0663 0.0176 +/-0.0663 0.0352 pCi/g Lead-214 0.736 +/-0.0819 0.0214 +/-0.0819 0.0427 pCi/g Manganese-54 U-0.000683 +/-0.0136 0.0118 +/-0.0136 0.0236 pCi/g Niobium-94 U 0.00271 +/-0.0124 0.0106 +/-0.0124 0.0212 pCi/g Potassium-40 10.3 +/-0.860 0.0962 +/-0.860 0.192 pCi/g Radium-226 0.624 +/-0.0795 0.0216 +/-0.0795 0.0432 pCi/g Silver-108m U -0.00219 +/-0.0119 0.0104 +/-0.0119 0.0208 pCi/g Thallium-208 0.231 +/-0.0338 0.0112 +/-0.0338 0.0224 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.00116 +/-0.0139 0.0115 +/-0.0139 0.0259 pCi/g KSD1 04/16/07 2300 624917 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB 1 04/12/07 1117 624891 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 55 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-01OF Project: YANK01204 Sample ID: 184030010 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, S90, solid-ALL FSS 87 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 56 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-01 IF Project: YANK01204 Sample ID: 184030011 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 5.6%

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

Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.485 +/-0.115 0.0405 +/-0.115 0.081 pCi/g MJHI 04/16/07 1844 625519 Americium-241 U 0.0319 +/-0.0603 0.0507 +/-0.0603 0.101 pCi/g Bismuth-212 Ul 0.00 +/-0.166 0.109 +/-0.166 0.217 pCi/g Bismuth-214 0.686 +/-0.0822 0.0221 +/-0.0822 0.0442 pCi/g Cesium-I 34 UI 0.00 +/-0.0207 0.0138 +/-0.0207 0.0276 pCi/g Cesium-137 U 0.00601 +/-0.0184 0.0121 +/-0.0184 0.0243 pCi/g Cobalt-60 U 0.00364 +/-0.0145 0.0124 +/-0.0145 0.0248 pCi/g Europium-152 U -0.0587 +/-0.058 0.0313 +/-0.058 0.0626 pCi/g Europium-154 U -0.0433 +/-0.0462 0.037 +/-0.0462 0.074 pCi/g Europium-155 U 0.0182 +/-0.0374 0.0342 +/-0.0374 0.0683 pCi/g Lead-212 0.447 +/-0.0489 0.0177 +/-0.0489 0.0355 pCi/g Lead-214 0.798 +/-0.094 0.022 +/-0.094 0.044 pCi/g Manganese-54 U 0.00802 +/-0.0144 0.0126 +/-0.0144 0.0253 pCi/g Niobium-94 U -0.00628 +/-0.0128 0.011 +/-0.0128 0.0219 pCi/g Potassium-40 10.4 +/-0.855 0.116 +/-0.855 0.232 pCi/g Radium-226 0.686 +/-0.0822 0.0221 +/-0.0822 0.0442 pCi/g Silver-108m U -0.00829 +/-0.0114 0.00982 +/-0.0114 0.0196 pCi/g Thallium-208 0.129 +/-0.0261 0.0111 +/-0.0261 0.0223 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.0026 +/-0.0163 0.0134 +/-0.0163 0.0297 pCi/g NXL3 04/16/07 2031 624928 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 2 EPA 905.0 Modified Page 57 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-011F Project: YANK01204 Sample ID: 184030011 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 86 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, or LOD.

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

Page 58 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-01 2F Proiect: YANK01204 Sample ID: 184030012 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 10-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 11.7%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.802 +/-0.128 0.037 +/-0.128 0.0739 pCi/g MJH1 04/16/07 1845 625519 Americium-241 U 0.0338 +/-0.045 0.0377 +1-0.045 0.0753 pCi/g Bismuth-212 0.497 +/-0.180 0.0749 +/-0.180 0.150 pCi/g Bismuth-214 0.713 +/-0.0884 0.0188 +/-0.0884 0.0376 pCi/g Cesium-134 UI 0.00 +/-0.0219 0.0125 +/-0.0219 0.0249 pCi/g Cesium-137 U 0.00466 +/-0.0146 0.0109 +/-0.0146 0.0218 pCi/g Cobalt-60 U 0.00175 +/-0.0203 0.0114 +/-0.0203 0.0227 pCi/g Europium-152 U -0.0222 +/-0.038 0.027 +/-0.038 0.054 pCi/g Europium-154 U -0.0168 +/-0.0394 0.0323 +/-0.0394 0.0646 pCi/g Europium-155 UI 0.00 +/-0.0443 0.0278 +/-0.0443 0.0556 pCi/g Lead-212 0.767 +/-0.0677 0.0157 +/-0.0677 0.0313 pCi/g Lead-214 0.773 +/-0.081 0.0195 +/-0.081 0.039 pCi/g Manganese-54 U 0.00618 +/-0.0134 0.0104 +/-0.0134 0.0207 pCi/g Niobium-94 U -0.00581 +/-0.0114 0.0094 +/-0.0114 0.0188 pCi/g Potassium-40 10.8 +/-0.821 0.0908 +/-0.821 0.182 pCi/g Radium-226 0.713 +/-0.0884 0.0188 +/-0.0884 0.0376 pCi/g Silver-108m U 0.0143 +/-0.0106 0.00967 +/-0.0106 0.0193 pCi/g Thallium-208 0.228 +/-0.0314 0.0104 +/-0.0314 0.0207 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.0128 +/-0,0168 0.0127 +/-0.0168 0.0286 pCi/g NXL3 04/16/07 2031 624928 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI1 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 59 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-012F Project: YANK01204 Sample ID: 184030012 Client ID: YANKOO Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch IN Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 79 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 60 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-013F Project: YANK01204 Sample ID: 184030013 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 9.95%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Alpha Spec Analysis Alphaspec Am241, Cm, Solid ALL FSS Americium-241 U 0.00464 +/-0.0737 0.0585 +/-0.0737 0.205 pCi/g BXLI 04/16/07 1247 625064 Curium-242 U -0.00807 +/-0.0158 0.0302 +/-0.0159 0.152 pCi/g Curium-243/244 U -0.0691 +/-0.0845 0.105 +/-0.0849 0.299 pCi/g Alphaspec Pu, Solid-ALL FSS Plutonium-238 U 0.061 +/-0.121 0.0744 +/-0.122 0.228 pCi/g BXL1 04/16/07 1247 625065 Plutonium-239/240 U -0.0211 +/-0.0239 0.0456 +/-0.024 0.171 pCi/g Liquid Scint Pu241, Solid-ALL FSS Plutonium-241 U -2.8 +/-5.13 4.45 +/-5.13 9.39 pCi/g GXR1 04/19/07 1244 626590 Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.636 +/-0.114 0.0404 +/-0.114 0.0808 pCi/g MJH1 04/16/07 1845 625519 Americium-241 U -0.00138 +/-0.0201 0.0176 +/-0.0201 0.0352 pCi/g Bismuth-212 0.395 +/-0.180 0.090 +/-0.180 0.180 pCi/g Bismuth-214 0.661 +/-0.0846 0.0216 +/-0.0846 0.0432 pCi/g Cesium-134 UI 0.00 +/-0.0231 0.0154 +/-0.0231 0.0308 pCi/g Cesium-137 U 0.018 +/-0.0208 0.0126 +/-0.0208 0.0251 pCi/g Cobalt-60 U -0.00369 +/-0.015 0.0122 +/-0.015 0.0245 pCi/g Europium-152 U -0.0032 +/-0.0311 0.0282 +/-0.0311 0.0564 pCi/g Europium-154 U -0.0288 +/-0.0429 0.0341 +/-0.0429 0.0681 pCi/g Europium-155 U 0.0416 +/-0.0439 0.0262 +/-0.0439 0.0524 pCi/g Lead-212 0.643 +/-0.0668 0.0151 +/-0.0668 0.0302 pCi/g Lead-214 0.730 +/-0.0843 0.0204 +/-0.0843 0.0408 pCi/g Manganese-54 U 0.022 +/-0.0181 0.0111 +/-0.0181 0.0222 pCi/g Niobium-94 U 0.0151 +/-0.0175 0.0122 +/-0.0175 0.0244 pCi/g Potassium-40 9.11 +/-0.730 0.0987 +/-0.730 0.197 pCi/g Radium-226 0.661 +/-0.0846 0.0216 +/-0.0846 0.0432 pCi/g Silver-108m U -0.00124 +/-0.0111 0.00981 +/-0.0111 0.0196 pCi/g Thallium-208 0.205 +/-0.0337 0.0115 +/-0.0337 0.0231 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U -0.00288 +/-0.0188 0.016 +/-0.0188 0.0351 pCi/g NXL3 04/16/07 2032 624928 Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid - 3 pCilg Tritium U 0,477 +1-1.08 0.887 +/-1.08 1.86 pCi/g AXD2 04/17/07 1637 625106 Page 61 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-013F Project: YANK01204 Sample ID: 184030013 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Liquid Scintillation Analysis Liquid Scint C14, Solid AII,FSS Carbon-14 U -0.0629 +/-0.100 0.085 +/-0.100 0.173 pCi/g AXD2 04/13/07 2312 625109 Liquid Scint Fe55, Solid-ALL FSS Iron-55 U -1.08 +/-30.9 21.5 +/-30.9 45.6 pCi/g MXP1 04/16/07 2032 625115 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 U -6.66 +/-10.5 9.11 +/-10.5 19.1 pCi/g MXPI 04/16/07 2229 625116 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U 0.0752 +/-0.217 0.180 +/-0.217 0.370 pCi/g MXP1 04/17/07 1152 625122 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 04/12/07 1117 624891 The following Analytical Methods were performed Method Description 1 DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Pu-I 1-RC Modified 3 DOE EML HASL-300, Pu-I I-RC Modified 4 DOE EML HASL-300, Pu-I 1-RC Modified 5 DOE EML HASL-300, Pu-I I-RC Modified 6 EML HASL 300,4.5.2.3 7 EPA 905.0 Modified 8 EPA 906.0 Modified 9 EPA EERF C-01 Modified 10 DOE RESL Fe-1, Modified 11 DOE RESL Ni-1, Modified 12 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Americium-243 Tracer Alphaspec Am241, Cm, Solid ALL 89 (15%-125%)

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

Plutonium-242 Tracer Liquid Scint Pu241, Solid-ALL Fý 84 (25%-125%)

Strontium Carrier GFPC, Sr90, solid-ALL FSS 82 (25%-125%)

Iron-59 Tracer Liquid Scint Fe55, Solid-ALL FS 68 (15%-125%)

Nickel Carrier Liquid Scint Ni63, Solid-ALL FS 79 (25%-125%)

Page 62 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-013F Project: YANK01204 Sample ID: 184030013 Client ID: YANK001 Vol. Recv.:

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

Technetium-99m Tracer Liquid Scint Tc99, Solid-ALL FS 73 (15%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 63 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-014F Proiect: YANK01204 Sample ID: 184030014 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 4.09%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1A Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.854 +/-0.133 0.0314 +/-0.133 0.0627 pCi/g MJHI 04/16/07 1845 625519 Americium-241 U 0.0401 +/-0.0654 0.0556 +/-0.0654 0.111 pCi/g Bismuth-212 0.506 +/-0.150 0.0666 +/-0.150 0.133 pCi/g Bismuth-214 0.811 +/-0.0895 0.0184 +/-0.0895 0.0368 pCi/g Cesium-134 UI 0.00 +/-0.020 0.0117 +/-0.020 0.0235 pCi/g Cesium-137 U 0.0113 +/-0.0123 0.00947 +/-0.0123 0.0189 pCi/g Cobalt-60 U -0.00193 +/-0.0107 0.00915 +/-0.0107 0.0183 pCi/g Europium-152 U -0.0238 +/-0.0321 0.0235 +/-0.0321 0.0471 pCi/g Europium-154 U 0.0312 +/-0.0366 0.0286 +/-0.0366 0.0572 pCi/g Europium-155 Ul 0.00 +/-0.0474 0.0315 +/-0.0474 0.0631 pCi/g Lead-212 0.887 +/-0.0776 0.0143 +/-0.0776 0.0286 pCi/g Lead-214 0.980 +/-0.0956 0.0169 +/-0.0956 0.0338 pCi/g Manganese-54 UI 0.00 +/-0.0127 0.00875 +/-0.0127 0.0175 pCi/g Niobium-94 U 0.00557 +/-0.010 0.0087 +/-0.010 0.0174 pCi/g Potassium-40 11.8 +/-0.808 0.0797 +/-0.808 0.159 pCi/g Radium-226 0.811 +/-0.0895 0.0184 +/-0.0895 0.0368 pCi/g Silver-108m U -0.00492 +/-0.0089 0.00783 +/-0.0089 0.0157 pCi/g Thallium-208 0.267 +/-0.0335 0.00883 +/-0.0335 0.0177 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.0167 +/-0.0184 0.0138 +/-0.0184 0.0308 pCi/g NXL3 04/16/07 2032 624928 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB 1 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 64 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-014F Project: YANK01204 Sample ID: 184030014 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 85 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 65 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-014FS Project: YANK01204 Sample ID: 184030015 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 4.05%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1A Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.479 +/-0.0966 0.0306 +/-0.0966 0.0612 pCi/g MJHI 04/16/07 1846 625519 Americium-241 U 0.0338 +/-0.0446 0.0382 +/-0.0446 0.0764 pCi/g Bismuth-212 0.311 +/-0.131 0.0638 +/-0.131 0.128 pCi/g Bismuth-214 0.431 +/-0.0618 0.0161 +/-0.0618 0.0321 pCi/g Cesium-134 UI 0.00 +/-0.017 0.0115 +/-0.017 0.0229 pCi/g Cesium-137 U -0.00357 +/-0.0109 0.00928 +/-0.0109 0.0185 pCi/g Cobalt-60 U -0.0024 +/-0.0105 0.00878 +/-0.0105 0.0176 pCi/g Europium-152 U -0.0366 +/-0.0317 0.0237 +/-0.0317 0.0473 pCi/g Europium-154 U 0.0065 +/-0.0365 0.0295 +/-0.0365 0.0589 pCi/g Europium-155 U 0.0375 +/-0.0344 0.0258 +/-0.0344 0.0517 pCi/g Lead-212 0.453 +/-0.0455 0.0134 +/-0.0455 0.0267 pCi/g Lead-214 0.426 +/-0.0576 0.0174 +/-0.0576 0.0347 pCi/g Manganese-54 U 0.00673 +/-0.00935 0.00876 +/-0.00935 0.0175 pCi/g Niobium-94 U 0.000264 +/-0.00981 0.00848 +/-0.00981 0.017 pCi/g Potassium-40 8.96 +/-0.731 0.0785 +/-0.731 0.157 pCi/g Radium-226 0.431 +/-0.0618 0.0161 +/-0.0618 0.0321 pCi/g Silver-108m U -0.0076 +/-0.00897 0.00775 +/-0.00897 0.0155 pCi/g Thallium-208 0.153 +/-0.0249 0.00811 +/-0.0249 0.0162 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.0167 +/-0.0196 0.015 +/-0.0196 0.0331 pCi/g NXL3 04/16/07 2032 624928 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 66 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-014FS Project: YANK01204 Sample ID: 184030015 Client ID: YANKO01 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 85 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 67 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-015F Project: YANK01204 Sample ID: 184030016 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 09-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 8.06%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1A Rad Gamma Spec Analysis Gamma,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.617 +/-0.103 0.0338 +/-0.103 0.0676 pCi/g MJH1 04/16/07 1846 625519 Americium-241 U 0.0181 +/-0.0352 0.030 +/-0.0352 0.0599 pCi/g Bismuth-212 0.367 +/-0.112 0.0747 +/-0.112 0.149 pCi/g Bismuth-214 0.469 +/-0.0595 0.0198 +/-0.0595 0.0396 pCi/g Cesium-134 UI 0.00 +/-0.0185 0.0126 +/-0.0185 0.0252 pCi/g Cesium-137 U -0.00515 +/-0.012 0.0101 +/-0.012 0.0201 pCi/g Cobalt-60 U 0.0052 +/-0.0116 0.010 +/-0.0116 0.0201 pCi/g Europium-152 U -0.0363 +/-0.0347 0.026 +/-0.0347 0.052 pCi/g Europium-154 U 0.00401 +/-0.0336 0.0286 +/-0.0336 0.0572 pCi/g Europium-155 U 0.00741 +/-0.0394 0.0289 +/-0.0394 0.0579 pCi/g Lead-212 0.532 +/-0.0519 0.0158 +/-0.0519 0.0317 pCi/g Lead-214 0.560 +/-0.0627 0.0194 +/-0.0627 0.0388 pCi/g Manganese-54 U -0.0028 +/-0.0119 0.0103 +/-0.0119 0.0207 pCi/g Niobium-94 U 0.00487 +/-0.0115 0.00995 +/-0.0115 0.0199 pCi/g Potassium-40 9.45 +/-0.711 0.0712 +/-0.711 0.142 pCi/g Radium-226 0.469 +/-0.0595 0.0198 +/-0.0595 0.0396 pCi/g Silver-108m U 0.00267 +/-0.012 0.00933 +/-0.012 0.0187 pCi/g Thallium-208 0.190 +/-0.0277 0.00926 +/-0.0277 0.0185 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 0.0505 +/-0.0184 0.0108 +/-0.0184 0.0243 pCi/g NXL3 04/16/07 2032 624928 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 04/12/07 1117 624891 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 68 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-015F Project: YANK01204 Sample ID: 184030016 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr9O, solid-ALL FSS 89 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 69 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-016F Project: YANK01204 Sample ID: 184030017 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 10-APR-07 Receive Date: 12-APR-07 Collector: Client Moisture: 9.81%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1%

Rad Gamma Spec Analysis Gamma,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.951 +/-0.145 0.0285 +/-0.145 0.057 pCi/g MJHI 04/16/07 1846 625519 Americium-241 U 0.012 +/-0.0478 0.0382 +/-0.0478 0.0764 pCi/g Bismuth-212 0.631 +/-0.175 0.065 +/-0.175 0.130 pCi/g Bismuth-214 0.851 +/-0.0946 0.0173 +/-0.0946 0.0345 pCi/g Cesium-134 UI 0.00 +/-0.0176 0.0117 +/-0.0176 0.0233 pCi/g Cesium-137 U -0.00808 +/-0.0108 0.00905 +/-0.0108 0.0181 pCi/g Cobalt-60 U -0.00636 +/-0.011 0.00912 +/-0.011 0.0182 pCi/g Europium-152 U -0.0283 +/-0.0372 0.0237 +/-0.0372 0.0474 pCi/g Europium-154 U -0.0129 +/-0.0341 0.0288 +/-0.0341 0.0576 pCi/g Europium-155 UI 0.00 +/-0.0453 0.0277 +/-0.0453 0.0554 pCi/g Lead-212 0.862 +/-0.0713 0.0148 +/-0.0713 0.0295 pCi/g Lead-214 0.919 +/-0.0892 0.0176 +/-0.0892 0.0351 pCi/g Manganese-54 U 0.00312 +/-0.0132 0.00923 +/-0.0132 0.0184 pCi/g Niobium-94 U 0.0111 +/-0.00993 0.00875 +/-0.00993 0.0175 pCi/g Potassium-40 10.9 +/-0.782 0.0774 +/-0.782 0.155 pCi/g Radium-226 0.851 +/-0.0946 0.0173 +/-0.0946 0.0345 pCi/g Silver-108m U -0.00101 +/-0.00953 0.00815 +/-0.00953 0.0163 pCi/g Thallium-208 0.252 +/-0.0301 0.00872 +/-0.0301 0.0174 pCi/g Rad -Gas Flow Proportional Counting GFPC,Sr9O, solid-ALL FSS Strontium-90 U 0.0174 +/-0.0163 0.0118 +/-0.0163 0.0267 pCi/g NXL3 04/16/07 2032 624928 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 04/12/07 1117 624891 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 2 EPA 905.0 Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits Page 70 of 81

GEL 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: April 19, 2007

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9803-0000-016F Project: YANK01204 Sample ID: 184030017 Client Vol. Recv.: YANKOO ID:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch 1 Surrogate/Tracer recovery Test Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, solid-ALL FSS 89 (25%-125%)

Notes:

The Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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.

Page 71 of 81

QUALITY CONTROL DATA I

Page 72 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Report Date: April 19, 2007 lient : Connecticut Yankee Atomic Power Page 1 of 9 362 Injun Hollow Rd East Hampton, Connecticut

'ontact: Mr. Jack McCarthy Vorkorder: 184030 armname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time ad Alpha Spec itch 625064 QC1201314146 184030004 DUP

,mericium-241 U 0.121 U -0.0105 pCi/g 238 (0% - 100%) BXL1 04/16/07 12:47 Uncert: +/-0.160 +/-0.0755 TPU: +/-0.160 +/-0.0755

.urium-242 U 0.0356 U 0.00 pCi/g 200 (0% -100%)

Uncert: +/-0.0698 +/-0.0646 TPU: +/-0.0699 +/-0.0646

.Urium-243/244 U -0.0828 U 0.0192 pCi/g 321 (0%- 100%)

Uncert: +/-0.0513 +/-0.118 TPU: +/-0.0523 +/-0.118 QC1201314148 LCS

,mericium-241 13.0 12.4 pCi/g 95 (75%-125%)

Uncert: +/-1.17 TPU: +/-1.87 urium-242 U -0.0139 pCi/g Uncert: +/-0.0192 TPU: +/-0.0193

'urium-243/244 15.5 15.4 pCi/g 99 (75%-125%)

Uncert: +/-1.30 TPU: +/-2.24 QC1201314145 MB

,mericium-241 U -0.0469 pCi/g Uncert: +/-0.105 TPU: +/-0.105

'utium-242 U 0.0164 pCi/g Uncert: +/-0.0654 TPU: +/-0.0654

.urium-243/244 U 0.119 pCi/g Uncert: +/-0.156 TPU: +/-0.156 QC12013 14147 184030004 MS

,mericium-241 13.5 U 0.121 13.2 pCi/g 98 (75%-125%)

Uncert: +/-0.160 +/-1.26 TPU +/-0.160 +/-2.02

.urium-242 U 0.0356 U 0.0244 pCi/g Uncert: +/-0.0698 +/-0.0648 TPU +/-0.0699 +/-0.0649

'urium-243/244 16.2 U -0.0828 15.3 pCi/g 94 (75%-125%)

Uncert: +/-0.0513 +/-1.36 TPU +/-0.0523 +/-2.29 atch 625065 QC1201314156 184030004 DUP lutonium-238 U -0.012 U 0.0292 pCi/g 479 (0% - 100%) BXLI 04/16/07 12:47 Page 73 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Vorkorder: 184030 Page 2 of 9 armname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time ad Alpha Spec

tch 625065 Uncert: +/-0.0517 +/-0.128 TPU: +/-0.0517 +/-0.128 lutonium-239/240 U 0.0569 U 0.0708 pCi/g 22 (0%- 100%)

Uncert: +/-0.0871 +/-0.122 TPU: +/-0.0873 +/-0.122 QC1201314158 LCS lutonium-238 U 0.0701 pCi/g (75%-125%)

Uncert: +/-0.124 TPU: +/-0.124 lutonium-239/240 12.9 12.2 pCi/g 95 (75%-125%)

Uncert: +/-1.19 TPU: +/-1.72 QC1201314155 MB lutonium-238 U -0.0799 pCi/g Uncert: +/-0.0892 TPU: +/-0.0896 lutonium-239/240 U 0.0257 pCi/g Uncert: +/-0.0682 TPU: +/-0.0683 QC1201314157 184030004 MS lutonium-238 U -0.012 U 0.111 pCi/g (75%-125%)

Uncert: +/-0.0517 +/-0.165 TPU: +/-0.0517 +/-0.165 lutonium-239/240 13.5 U 0.0569 14.2 pCi/g 105 (75%-125%)

Uncert: +/-0.0871 +/-1.41 TPU: +/-0.0873 +/-2.07 atch 626590 QC1201317874 184030004 DUP lutonium-241 u -1.17 U -3.04 pCi/g 0 (0% - 100%) GXR1 04/19/07 13:16 Uncert: +/-4.67 +/-4.71 TPU: +/-4.67 +/-4.71 QC1201317876 LCS lutonium-241 93.4 74.3 pCi/g 80 (75%-125%) 04/19/07 13:48 Uncert: +/-8.21 TPU: +/-11.0 QC1201317873 MB lutonium-241 U 0.465 pCi/g 04/19/07 13:00 Uncert: +/-5.00 TPU: +/-5.00 QC1201317875 184030004 MS lutonium-241 94.7 U -1.17 78.5 pCi/g 83 (75%-125%) 04/19/07 13:32 Uncert: +/-4.67 +/-8.59 TPU: +/-4.67 +/-11.7 ad Gamma Spec atch 625519 QC1201315241 184030001 DUP

,ctinium-228 0.522 0.608 pCi/g 15 (0%- 100%) MJH1 04/17/0709:11 Uncert: +/-0.132 +/-0.183

+/-0.183 Page 74 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Vorkorder: 184030 Page 3 of 9 armname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time ad Gamma Spec itch 625519 TPU: +/-0.132

,mericium-241 U 0.026 U 0.032 pCi/g 21 (0% - 100%)

Uncert: +/-0.0682 +/-0.0236 TPU: +/-0.0682 +/-0.0236

ismuth-212 Ul 0.00 U 0.395 pCi/g 13 (0%- 100%)

Uncert: +/-0.167 +/-0.252 TPU: +/-0.167 +/-0.252

ismuth-214 0.459 0.503 pCi/g 9 (0% -100%)

Uncert: +/-0.0869 +/-0.121 TPU: +/-0.0869 +/-0.121

'esium- 134 U 0.0223 UI 0.00 pCi/g 85 (0% -100%)

Uncert: +/-0.0275 +/-0.0444 TPU: +/-0.0275 +/-0.0444 esium- 137 0.0281 U 0.0107 pCi/g 89 (0%- 100%)

Uncert: +/-0.0239 +/-0.0254 TPU: +/-0.0239 +/-0.0254 obalt-60 U 0.00538 U -0.0142 pCi/g 443 (0%- 100%)

Uncert: +/-0.0175 +/-0.0235 TPU: +/-0.0175 +/-0.0235

,uropium- 152 U 0.0238 U -0.0204 pCi/g 2660 (0%- 100%)

Uncert: +/-0.0609 +/-0.0786 TPU: +/-0.0609 +/-0.0786 U 0.0124 U 0.019 pCi/g 42 (0% - 100%)

Uncert: +/-0.0562 +/-0.070 TPU: +/-0.0562 +/-0.070

,uropium-155 U -0.0291 U 0.0775 pCi/g 440 (0% - 100%)

Uncert: +/-0.0519 +/-0.0516 TPU: +/-0.0519 +/-0.0516

,ead-212 0.547 0.488 pCi/g 12 (0%-20%)

Uncert: +/-0.0594 +/-0.0792 TPU: +/-0.0594 +/-0.0792

.ead-214 0.496 0.568 pCi/g 14 (0%-20%)

Uncert: +/-0.0742 +/-0.101 TPU: +/-0.0742 +/-0.101 langanese-54 U 0.00646 U 0.00343 pCi/g 61 (0% -100%)

Uncert: +/-0.0156 +/-0.024 TPU: +/-0.0156 +/-0.024 liobium-94 U 0.0109 U -0.014 pCi/g 1630 (0%- 100%)

Uncert: +/-0.017 +/-0.0224 TPU: +/-0.017 +/-0.0224 otassium-40 12.0 11.2 pCi/g 6 (0% - 20%)

Uncert: +/-0.987 +/-1.17 TPU: +/-0.987 +/-1.17

.adium-226 0.459 0.503 pCi/g 9 (0%- 100%)

Uncert: +/-0.0869 +/-0.121 TPU: +/-0.0869 +/-0.121 ilver-108m U 0.00418 U 0.00558 pCi/g 29 (0% -100%)

Uncert: +/-0.0141 +/-0.0198 Page 75 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Vorkorder: 184030 Page 4 of 9 armname NOM Sample Qual QC Units RPD% REC% Range AnIst Date Time ad Gamma Spec itch 625519 TPU: +/-0.0141 +/-0.0198

'hallium-208 0.168 0.150 pCi/g 12 (0% - 100%)

Uncert: +/-0.0297 +/-0.0478 TPU: +/-0.0297 +/-0.0478 QC1201315242 LCS

,ctinium-228 1.02 pCi/g 04/17/07 09:10 Uncert: +/-0.578 TPU: +/-0.578

,mericium-241 16.0 14.0 pCi/g 87 (75%-125%)

Uncert: +/-1.66 TPU: +/-1.66

ismuth-212 U 0.627 pCi/g Uncert: +/-0.764 TPU: +/-0.764

ismuth-214 0.624 pCi/g Uncert: +/-0.244 TPU: +/-0.244 esium- 134 U 0.0266 pCi/g Uncert: +/-0.111 TPU: +/-0.111

,esium- 137 6.19 5.89 pCi/g 95 (75%-125%)

Uncert: +/-0.546 TPU: +/-0.546

.obalt-60 9.28 9.15 pCi/g 99 (75%-125%)

Uncert: +/-0.717 TPU: +/-0.717

,uropium- 152 U -0.142 pCi/g Uncert: +/-0.294 TPU: +/-0.294

,uropium- 154 U -0.147 pCi/g Uncert: +/-0.283 TPU: +/-0.283

.uropium-155 U 0.00105 pCi/g Uncert: +/-0.269 TPU: +/-0.269

,ead-212 0.937 pCi/g Uncert: +/-0.230 TPU: +/-0.230

,ead-214 0.665 pCi/g Uncert: +/-0.260 TPU: +/-0.260 langanese-54 U -0.0119 pCi/g Uncert: +/-0.0972 TPU: +/-0.0972 liobium-94 U -0.00404 pCi/g Uncert: +/-0.0942 TPU: +/-0.0942 otassiuin-40 U 1.06 pCi/g Page 76 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Vorkorder: 184030 Page 5 of 9 armname NOM Sample Qual OC Units RPD% REC% Ranee AnIst Date Time ad Gamma Spec itch 625519 Uncert: +/-1.02 TPU: +/-1.02

.adium-226 0.624 pCi/g (75%-1 25%)

Uncert: +/-0.244 TPU: +/-0.244 ilver-108m U -0.0182 pCi/g Uncert: +/-0.089 TPU: +/-0.089

'hallium-208 0.317 pCi/g Uncert: +/-0.187 TPU: +/-0.187 MB

,ctinium-228 U 0.0048 pCi/g 04/17/07 09:11 Uncert: +/-0.108 TPU: +/-0.108

,mericium-241 U 0.0157 pCi/g Uncert: +/-0.033 TPU: +/-0.033

ismuth-212 U 0.107 pCi/g Uncert: +/-0.193 TPU: +/-0.193

ismuth-214 U -0.00637 pCi/g Uncert: +/-0.0531 TPU: +/-0.0531 esium- 134 U 0.00663 pCi/g Uncert: +/-0.0243

.esium- 137 TPU: +/-0.0243 U -0.0133 pCi/g Uncert: +/-0.0269 TPU: +/-0.0269

'obalt-60 U -0.0238 pCi/g Uncert: +/-0.0262 TPU: +/-0.0262

,uropium- 152 U -0.00193 pCi/g Uncert: +/-0.0671 TPU: +/-0.0671

.uropium- 154 U 0.0251 pCi/g Uncert: +/-0.0689 TPU: +/-0.0689

,uropium- 155 U 0.000307 pCi/g Uncert: +/-0.0525 TPU: +/-0.0525

.ead-212 U 0.0203 pCi/g Uncert: +/-0.0405 TPU: +/-0.0405

.ead-214 U 0.0266 pCi/g Uncert: +/-0.0659 TPU: +/-0.0659 Page 77 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Vorkorder: 184030 Page 6 of 9 armname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time ad Gamma Spec itch 625519 langanese-54 U -0.00236 pCi/g Uncert: +/-0.0236 TPU: +/-0.0236 liobium-94 U 0.0103 pCi/g Uncert: +/-0.0279 TPU: +/-0.0279 otassium-40 U -0.17 pCi/g Uncert: +/-0.297 TPU: +/-0.297

.adium-226 U -0.00637 pCi/g Uncert: +/-0.0531 TPU: +/-0.0531 ilver- 108m U 0.0101 pCi/g Uncert: +/-0.0222 TPU: +/-0.0222 hallium-208 u -0.0122 pCi/g Uncert: +/-0.0295 TPU: +/-0.0295 ad Gas Flow atch 624917 QC1201313722 184029002 DUP trontium-90 U -0.0115 U -0.0163 pCi/g 0 (0% - 100%) KSDI 04/16/07 22:58 Uncert: +/-0.0162 +/-0.0138 TPU: +/-0.0162 +/-0.0138 QC1201313724 LCS trontium-90 1.41 1.44 pCi/g 102 (75%-125%) 04/16/07 22:59 Uncert: +1-0.105 TPU: +/-0.114 QC1201313721 MB trontium-90 U 0.0164 pCi/g 04/16/07 22:58 Uncert: +/-0.0145 TPU: +/-0.0145 QC1201313723 184029002 MS trontium-90 1.59 U -0.0115 1.22 pCi/g 77 (75%-125%) 04/16/07 22:58 Uncert: +/-0.0162 +/-0.102 TPU: +/-0.0162 +/-0.109 atch 624928 QC1201313742 184030011 DUP trontium-90 U 0.0026 U 0.000838 pCi/g 0 (0% - 100%) NXL3 04/16/07 22:53 Uncert: +/-0.0163 +/-0.0157 TPU: +/-0.0163 +/-0.0157 QC1201313744 LCS trontium-90 1.43 1.54 pCi/g 107 (75%-125%) 04/16/07 22:54 Uncert: +/-0.102 TPU: +/-0.108 QC1201313741 MB trontium-90 U 0.0164 pCi/g 04/16/07 20:36 Uncert: +/-0.0189 Page 78 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Vorkorder: 184030 Page 7 of 9 armname NOM Sample Oual OC Units RPD% REC% Range AnIst Date Time ad Gas Flow itch 624928 TPU: +/-0.0189 QC1201313743 184030011 MS trontium-90 1.59 U 0.0026 1.59 pCi/g 100 (75%-125%) 04/16/07 22:53 Uncert: +/-0.0163 +/-0.109 TPU: +/-0.0163 +/-0.115 ad Liquid Scintillation atch 625106 QC1201314249 184030004 DUP

'ritium U -0.565 U 0.536 pCi/g 0 (0% - 100%) AtXD2 04/17/07 18:39 Uncert: +/-1.03 +/-1.10 TPU: +/-1.03 +/-1.10 QC1201314251 LCS

'ritium 23.8 23.7 pCi/g 100 (75%-125%) 04/17/07 20:41 Uncert: +/-1.96 TPU: +/-2.01 QC1201314248 MB ritium U 0.0348 pCi/g 04/17/07 17:38 Uncert: +/-1.08 TPU: +/-1.08 QC1201314250 184030004 MS

'ritium 23.9 U -0.565 24.1 pCi/g 101 (75%-125%) 04/17/07 19:40 Uncert: +/-1.03 +/-1.97 TPU: +/-1.03 +/-2.01 atch 625109 QC1201314253 184030004 DUP arbon-14 U -0.0433 U -0.043 pCi/g 0 (0% - 100%) AXD2 04/14/07 01:17 Uncert: +/-0.0989 +/-0.0953 TPU: +/-0.0989 +/-0.0953 QC1201314255 LCS

'arbon-14 6.80 6.83 pCi/g 100 (75%-125%) 04/14/07 03:22 Uncert: +/-0.192 TPU: +/-0.219 QC1201314252 MB

.arbon-14 U -0.0298 pCi/g 04/14/07 00:15 Uncert: +/-0.0944 TPU: +/-0.0944 QC1201314254 184030004 MS

.arbon- 14 7.27 U -0.0433 7.25 pCi/g 100 (75%-125%) 04/14/07 02:20 Uncert: +/-0.0989 +/-0.206 TPU: +/-0.0989 +/-0.235 atch - 625115 QC1201314268 184030004 DUP

'on-55 U -13.4 U -4.14 pCi/g 0 (0% - 100%) VIXPI 04/16/0721:05 Uncert: +/-24.1 +/-29.1 TPU: +/-24.1 +/-29.1 QC1201314270 LCS "on-55 1190 1200 pCi/g 100 (75%-125%) 04/16/07 21:39 Uncert: +/-65.3 TPU: +/-108 Page 79 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Vorkorder: 184030 Page 8 of 9 armname NOM Sample Qual QC Units RPD% REC% Range AnIst Date Time ad Liquid Scintillation itch 625115 QC1201314267 MB

-on-55 U 4.53 pCi/g 04/16/07 20:48 Uncert: +/-28.0 TPU: +/-28.0 QC1201314269 184030004 MS "on-55 1200 U -13.4 1140 pCi/g 95 (75%-125%) 04/16/07 21:22 Uncert: +/-24.1 +/-64.1 TPU: +/-24.1 +/-105 itch 625116 QC1201314273 184030004 DUP

[ickel-63 U -6.58 U -13.6 pCi/g 0 (0% - 100%) VIXPI 04/16/07 23:02 Uncert: +/-9.20 +/-10.4 TPU: +/-9.20 +/-10.4 QC1201314275 LCS lickel-63 558 425 pCi/g 76 (75%-125%) 04/16/07 23:36 Uncert: +/-22.1 TPU: +/-26.8 QC1201314272 MB

[ickel-63 U -9.31 pCi/g 04/16/07 22:46 Uncert: +/-10.9 TPU: +/-10.9 QC1201314274 184030004 MS lickel-63 591 U -6.58 510 pCi/g 86 (75%-125%) 04/16/07 23:19 Uncert: +/-9.20 +/-26.1 TPU: +/-9.20 +/-32.1 itch 625122 QC1201314277 184030004 DUP echnetium-99 U 0.325 U 0.0581 pCi/g 0 (0% - 100%) VIXPI 04/17/07 13:17 Uncert: +/-0.260 +/-0.206 TPU: +/-0.261 +/-0.206 QC1201314279 LCS echnetium-99 19.4 19.7 pCi/g 102 (75%-125%) 04/17/07 14:15 Uncert: +/-0.777 TPU: +/-0.925 QC1201314276 MB echnetium-99 U 0.075 pCi/g 04/17/07 12:35 Uncert: +/-0.185 TPU: +/-0.185 QC1201314278 184030004 MS

'echnetium-99 20.0 U 0.325 16.2 pCi/g 81 (75%-125%) 04/17/07 13:59 Uncert: +/-0.260 +/-0.826 TPU: +/-0.261 +/-0.924 Notes:

Fhe Qualifiers in this report are defined as follows:

- Analyte is a surrogate compound

< Result is less than value reported Page 80 of 81

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Vorkorder: 184030 Page 9 of 9 armname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time

> Result is greater than value reported A The TIC is a suspected aldol-condensation product B For General Chemistry and Organic analysis the 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 ND Analyte concentration is not detected above the detection limit 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 UA 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 ample is greater than five times (5X) the contract required detection limit (RL). In cases where either the sample or duplicate value is

,ss than 5X the RL, a control limit of +/- the RL is used to evaluate the DUP result.

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

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

Page 81 of 81

SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD ATTACHMENT 3 (DQA RESULTS)

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SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD ATTACHMENT 3A (PRELIMINARY DATA REVIEW)

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SUBSURFACE SOILS FOR NORTH GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9803-0000 RELEASE RECORD Attachment 4 Survey Unit: 9803-0000 Area Description Subsurface Soils, Parking Lot Classification 1 Survey Media Sub-Surface Soils Type of Survey Final Status Survey Number of Measurements 15 Static STATISTICS on TOTAL STATISTICS on NON-POPULATION PARAMETRIC POPULATION Cs-1 37 Co-60 Sr-90 Cs-137 Co-60 Sr-90 DCGLop (pCi/g): 5.38E+00 2.59E+00 1.05E+00 DCGLop (pCilg): 5.38E+00 2.59E+00 1.05E+00 Minimum Value: -1.45E-02 -1.73E-02 -1.50E-02 Minimum Value: -1.45E-02 -1.73E-02 -1.50E-02 Maximum Value: 2.81E-02 2.02E-02 5.05E-02 Maximum Value: 2.81 E-02 2.02E-02 5.05E-02 Mean: 7.16E-03 1.71E-03 6.32E-03 Mean: 7.16E-03 1.71E-03 6.32E-03 Median: 7.78E-03 1.93E-03 2.60E-03 Median: 7.78E-03 1.93E-03 2.60E-03 Standard Deviation: 1.20E-02 9.57E-03 1.65E-02 Standard Deviation: 1.20E-02 9.57E-03 1.65E-02 Cs-137 Co-60 Sr-90 GPS Coordinates1 1 11 Sample ID Result MDA Result MDA Result MDA Fraction

_____j 2o Identified 2cr Identified 2cr Identified North East (pCilg)t j (pCi/g) I nf d lg) (pCilg) (pCi/g) 2a (pCilg) of DCGL 9803-0000-001F 237032.21166788567 2.81E-02 0.024 2.55E-02 + 5.38E-03 0.018 3.06E-02 2.54E-03 0.022 4 1OE-02 0.010 9803-0000-002F 236841.78:668105.44 1.12E-02 0.019 3.24E-02 i 1.71E-02 0.020 3.67E-02 1.70E-02 0.017 2.82E-02 + 0.025 9803-0000-003F 236743.641668401.39 2.58E-02 2 0.041 6 60E-02 2.02E-02 0.040 7.13E-02 -1.50E-02 0.017 3.35E-02 -0.002

.---- + ............... ............... 4 --------------- 4------

9803-0000-004F 236787.90 667915.01 -1.45E-02 0.030 4.05E-02 9.28E-03 0.027 4.77E-02 -1.13E-02: 0.014 2.78E-02 -0.010 9803-0000-005F 236894.77 668100.32 7.78E-03 0.036 5.47E-02 -1.73E-02 0.032 4.72E-02 3.63E-03 0.016 2.96E-02 -0.002 9803-0000-007F 236758.731668203.85 1.49E-02 0.020 3.59E'02 1.93E-03 0.021 3.62E-02 -5.93E-03 0.016 3.19E-02 -0.002 9803-0000-008F 236530.381668222.47 -2.90E-03: 0.029 5.18E-02 -8.75E-03 0.042 5.75E-02 -1.08E-02 0.015 3.12E-02 -0.014 9803-0000-009F 236676.97!668180.87 -5.11 E-04 0.032 5.39E-02 i 3.38E-03 0.029 4.96E-02 1.64E-02 0.015 2.43E-02 + 0.017 9803-0000-OIOF 236657.73i668386.46 1.08E-02 0.014 2.19E-02 -4.21E-03 0.013 2.19E-02 1.16E-03 0.014 2.59E-02 0.001 00-0 --------------- 6.0-E-03--

---- 2.43E- ------------3E

--- 2.60E- -

0.016 - -02 --

9803-0000-O11 F 236941.161668324.68 6.01E 3 01 4E0 3.64E-03 0.015 2.48E-022.003 01 29E2 0.005 REVISION 0 Page I of 2

SUBSURFACE SOILS FOR NORTH GROUNDS (NON-PROTECTED AREA)

SURVEY UNIT 9803-0000 RELEASE RECORD Attachment 4 Cs-1 37 Co-60 Sr-90 GPS Coordinates 1r Sample ID Result MDA 2aIdentified Result j 2o MDA 1 Identified Result j 2 2J MDA (pCi/g)

Identified Fraction of DCGL North East (pCi/g) (pCilg) (pCi/g) (pCi/g) (pCilg) 0017 286E-02 0.014

.. ... ..236748.12i668053.19 9803-0000-012F 4.66E-03

0.015

.. i 2.18E-02 1.75E-03

............--------0.020 -- 227E-02

-.-----. -.. . 1.28E-02 9803-0000-013F 236606.37 668343.48 1.80E-02 0.021 2 51E-02 -3.69E-03 0015 2 45E-02 -2.88E-03 0019 3 35E-02 -0.001 9803-0000-014F 236873.171668566.16 1.13E-02 0.012 1.89E-02 -1.93E-03: 0.011 1 83E-02 1.67E-02 0018 3 30E-02 0.017 9803-0000-015F 236550.981668170.66 -5.15E-03 0.012 2.01E-02 5.20E-03 0.012 2.01E-02 5.05E02 0.018 2.43E-02 0.049 1.82E-02 1.74E-02 0.016......-.--... 2.67E-02 + ...... 0.013 9803-0000-016F 236847.09:668399.07

---------------.----------------0.011

-8.08E-03 ... ... . ..... 1.81E-02

.. - .. .. . -6.36E-03

.. .. .. .. 0.011 -

9803-0000-OO1FS 237032.21 667885.67 2.65E-03 0.030 5.39E-02 1.03E-02 0.031 5.56E-02 1.01E-02 0.020 3.45E-02 0.014 9803-0000-014FS 236873.171668566.16 -3.57E-03 0.011 1.85E-02 -2.40E-03 0.011 1l76E02 1.67E-02 0.020 3.31E-02 0.014 OTHER RADIONUCLIDES Result I FMDA I DCGLop Fraction Isotope R2 Identified ' F Sample ID (pCilg) (pCilg) (pCilg) of DCGL 9803-0000-003F Tc-99 3.25E-01 0 260 4 33E-01 + I 7.6E+00 0.043 9803-0000-003F Eu-155 9.95E-02 1 0.098 1.49E-01 + 2.4E+02 0.000 9803-0000-003F Mn-54 2.20E-02i 0.018 2.22E-02 + 1.OE+01 0.002 REVISION 0 Page 2 of 2

SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD ATTACHMENT 3B (GRAPHICAL REPRESENTATION OF DATA)

Revision 0

QUANTILE PLOT FOR CESIUM-137 Survey Unit: 9803-0000 Subsurface Soils under Parking Lot, Warehouses I &

2, & S/G MU Building Cs- 137 Rank Percentage

-1.45E-02 1 3.3%

-8.08E-03 2 10.0%

-5.15E-03 3 16.7%

-2.90E-03 4 23.3%

-5.11 E-04 5 30.0%

4.66E-03 6 36.7%

6.01 E-03 7 43.3%

7.78E-03 8 50.0%

1.08E-02 9 56.7%

1.12E-02 10 63.3%

1.13E-02 11 70.0%

1.49E-02 12 76.7%

1.80E-02 13 83.3%

2.58E-02 14 90.0%

2.81 E-02 15 96.7%

I 'D. W 0j 71WO W iAK A 12 (16 7 S itted 2 2 S~yEti'?/'o JRevi&ed by/Date

FREQUENCY PLOT FOR CESIUM-137 Survey Unit: 9803-0000 Survey Unit Name: Subsurface Soils under Parking Lot, Warehouses I & 2,

& S/G MU Building Mean: 7.16E-03 pCi/g Frequency Plot For Cs-137 10 8

" 6 Zr UL 4

LL.

2

-7.40E-03 -3.OOE-04 6.80E-03 1.39E-02 2.10E-02 2.81E-02 Upper End Value (pCilg)

Upper End Observation Observation Value Frequency Frequency

-7.40E-03 2 13%

-3.OOE-04 - 2 13%

6.80E-03 3 20%

1.39E-02 4 27%

2.1OE-02 2 13%

2.81E-02 2 13%

Total: 15 100%

,D.V304TKCV..)A% 41j?4 0-7 Sub itted b /Date L:Revg ed by/D~ate 1 of 1

QUANTILE PLOT FOR STRONTIUM-90 Survey Unit: 9803-0000 Subsurface Soils under Parking Lot, Warehouses I &

2, & S/G MU Building Mean: 6.32E-03 pCi/g Quantile Plot For Sr-90 6.0E-02 5.00E-02 - ---

4.OOE-02 (3 3.00E-02 -

. 2.00E-02 I

!1.00E-02 -

00 0.00E+00 A I 1 U I I

-1.OOE-02 m V

-2.00E-02 k 0 20 40 60 80 100 Percentage Sr-90 Rank Percentage

-1.50E-02 1 3.3%

-1.13E-02 2 10.0%

-1.08E-02 "3 16.7%

-5.93E-03 4 23.3%

-2.88E-03 5 30.0%

1.16E-03 6 36.7%

2.54E-03 7 43.3%

2.60E-03 8 50.0%

3.63E-03 9 56.7%

1.28E-02 10 63.3%

1.64E-02 11 70.0%

1.67E-02 12 76.7%

1.70E-02 13 83.3%

1.74E-02 14 90.0%

5.05E-02 15 96.7%

V304fl(OLOI I( a lI7 Su4mitted bj/Dat waed by/Date'

FREQUENCY PLOT FOR STRONTIUM-90 Survey Unit: 9803-0000 Survey Unit Name: Subsurface Soils under Parking Lot, Warehouses 1 & 2,

& S/G MU Building Mean: 6.32E-03 pCi/g Upper End Observation Observation Value Frequency Frequency

-6.8 1E-03 3 20%

1.38E-03

3 20%

9.56E-03 3 20%

1.78E-02 5 33%

2.59E-02 0 0%

3.413E-02 0 0%

4.231E-02 0 0%

5.05E-02 1 7%

Total: 15 100%

4 IZ(6IO7 Iubmitted Iy/Da Re wed by/Date 1 of 1

SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD ATTACHMENT 3C (SIGN TEST)

Revision 0

Connecticut Yankee Decommissioning Project GPP-GGGR-R5121-001 Attachment B, Health Physics Procedure Rev.CY-001 MAJOR Sign Test Calculation Sheet for Multiple Radionuclides Survey Area Number: 9803 Survey Unit Number: 0000 WPIR #: N/A Survey Area Name: Subsurface Soils under Classification: C TYPE I (aerror): 0.05 N: 15 Parking Lot & Warehouses Radionuclides: 1st Radionuclide 2nd Radionuclide 3 rd Radionuclide 4 th Radionuclide Cs-137 Co-60 Sr-90 DCGL 5.38E+00 2.59E+00 1.05E+00 Results 1st Results 2nd Results 3 rd Results 4 th Weighted Sum 1-Ws Sign Radionuclide Radionuclide Radionuclide Radionuclide (Ws)

(pCi/g) (pCi/g) (pCi/g) (pCi/g) 2.81 E-02 5.38E-03 2.54E-03 0.01 0.99 +1 1.12E-02 1.71E-02 1.70E-02 0.02 0.98 +1 2.58E-02 2.02E-02 -1.50E-02 0.00 1.00 +1

-1.45E-02 9.28E-03 -1.13E-02 -0.01 1.01 +1 7.78E-03 -1.73E-02 3.63E-03 0.00 1.00 +1 1.49E-02 1.93E-03 -5.93E-03 0.00 1.00 +1

-2.90E-03 -8.75E-03 -1.08E-02 -0.01 1.01 +1

-5.11E-04 3.38E-03 1.64E-02 0.02 0.98 +1 1.08E-02 -4.21E-03 1.16E-03 0.00 1.00 +1 6.01E-03 3.64E-03 2.60E-03 0.00 1.00 +1 4.66E-03 1.75E-03 1.28E-02 0.01 0.99 +1 1.80E-02 -3.69E-03 -2.88E-03 0.00 1.00 +1 1.13E-02 -1.93E-03 1.67E-02 0.02 0.98 +1

-5.15E-03 5.20E-03 5.05E-02 0.05 0.95 +1

-8.08E-03 -6.36E-03 1.74E-02 0.01 0.99 +1 Number of positive differences (S+) 15 Critical Value 11 Survey Unit Meets the Acceptance Criteria Performed by: David Wojtkowiak Date: 4124/2007 Independent Review by: ',l ,5 p, Date: - ý Z z -,,-1,2P 0 Page 1 of 1

SUBSURFACE AREA ASSOCIATED WITH THE NORTH GROUNDS SURVEY UNIT 9803-0000 RELEASE RECORD ATTACHMENT 3D (QC SPLIT RESULTS)

Revision 0

Ilealth Physics Procedure 24265-000-GPP-GGGR-R5124-000-Rev.CY-000 Attachment A llealth Physics Procedure 24265-000-GPP-GGGR-R5 I 24-000-Rev.CY-000 Attachment A Split Sample Assessment Form Survey Area #: 9803 Survey Unit # 0000 Survey Unit Name: Subsurface Soils under Parking Lot &

Warehouses Sample Plan or WPIR#: N/A SML#: 9803-0000-001 F Sample

Description:

Comparison of split samples collected from sample measurement location #1 and analyzed using gamma spectroscopy by off-site Vendor Laboratory. The standard sample was 9803-0000-001 F, the comparison sample was 9803-0000-00IFS.

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

K-40 1.20E+01 0.4935 24 0.75- 1.33 9.42E+00 0.55 0.79 Y Comments/Corrective Actions: Cs-137 was not detected in sufficient Table is provided to show acceptance criteria used to quantities in the field split results at location 9803-0000-001FS to assess split samples.

evaluate in accordance with procedure. Evaluation using the reported results for K-40 resulted in acceptable agreement between the field- Resolution Agreement Range split results at these locations.. Since K-40 was found to be present at an 4 -7 8 -15 0.5-2.0 0.6 -1.66 acceptable level of agreement, no further action is warranted. 16-50 0.75-1.33 51 -200 0.80-1.25

>200 0.85 - 1.18 Performed by- D Wojtkowiak Date: Reveiwed by: *I',,--yv,,ye 1 Date:

4/24/2007 Vi?. / -

6

ýj Page 1 of I

Ficalth Physics Procedure 24265-000-GPP-GGGR-R5124-000-Rev.CY-000 Attachment A Split Sample Assessment Form Survey Area #: 9803 Survey Unit # 0000 Survey Unit Name: Subsurface Soils under Parking Lot &

Warehouses Sample Plan or WPIR#: N/A SML#: 9803-0000-014F Sample

Description:

Comparison of split samples collected from sample measurement location #1 and analyzed using gamma spectroscopy by off-site Vendor Laboratory. The standard sample was 9803-0000-014F, the comparison sample was 9803-0000-01 4FS.

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

K-40 1.18E+01 0.404 29 0.75- 1.33 8.96E+00 0.37 0.76 Y Comments/Corrective Actions: Cs-137 was not detected in sufficient Table is provided to show acceptance criteria used to quantities in the field split results at locations 9803-0000-014F and assess split samples.

9803-0000-014FS to evaluate in accordance with procedure. Evaluation using the reported results for K-40 resulted in acceptable agreement Resolution AAreement Range between the field-split results at these locations. Since K-40 was found 4 -7 0.5 -2.0 to be present at an acceptable level of agreement, no further action is 8-15 0.76 - 1.66 to16 -50 0.75- 1.33 warranted. 51 -200 0.80- 1.25

>200 0.85-1.18 Performed b D. Wojtkowiak Date: Reveiwed by: , re 5, , Date:

4/24/2007 2/ A? - /Zo07 1\ýj Page 1 of I

ML071730478

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