ML063540352

Final Status Survey Release Record Subsurface Area Associated with the Peninsula (Survey Unit 9805-0000).

ML063540352
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	11/28/2006
From:	Massengill B Connecticut Yankee Atomic Power Co
To:	NRC/FSME
References
Download: ML063540352 (134)

Text

CYAPCO FINAL STATUS SURVEY RELEASE RECORD SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

Prepared By: ZL- SS\ ý II b ec- l*, Date: /1I-23-o(

FSS Engineer Reviewed B Date: [7*7 /6(

FSS Eng* eer Approved By: Qh 'A:r-,- Date:

Technical Support Manager Revision 0

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

RELEASE RECORD TABLE OF CONTENTS

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

2. CLA SSIFICA TION BA SIS .................................................................................... 3

3. DATA QUALITY OBJECTIVES (DQO) ............................................................. 6

4. SU R V EY DE SIG N ............................................................................................... 9

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

6. SU RV EY RESU LTS .......................................................................................... 13

7. QU ALITY CON TR O L ........................................................................................ 15

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

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

10. CHANGES FROM THE FINAL STATUS SURVEY PLAN ............................. 15

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

12. AN O M A L IE S ...................................................................................................... 16

13. C O N C L U SION .................................................................................................... 16

14. A TTA CH M EN T S ............................................................................................... 17 14.1 Attachment I - Figures (6 pages including cover) 14.2 Attachment 2 - Laboratory Data (110 pages including cover) 14.3 Attachment 3 - DQA Results (14 pages including covers)

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RELEASE RECORD

1. SURVEY UNIT DESCRIPTION Survey Unit 9805-0000 (Peninsula) is designated as a Final Status Survey (FSS) subsurface Class C area. The survey area is located south of the industrial area approximately seven hundred fifty feet (750 ft) from the site benchmark based on the Connecticut State Plan System North American Datum (NAD) 1927 (Northing 236594.381, Easting 668136.136). The survey area has a total surface area of approximately one million four hundred and three thousand seven hundred and fifty square feet (1,403,750 ft') or one hundred thirty thousand three hundred and eighty square meters (130,380 inm) or thirty-two (32) acres. The land area does not include the twenty one thousand three hundred and forty-seven square feet (21,347 ft2) associated with the land area of Survey Area 9807, a separate subsurface area, which is located within Survey Area 9805 (see Attachment 1).

The surface land units that reside above this subsurface survey unit are relatively level open space of the peninsula. The restoration of the peninsula for FSS has removed most of the interferences in the survey unit.

The reference coordinates associated with this survey unit are E003 through E034 by S072 through S125 (refer to License Termination Plan (LTP) Section 5.4.4). The reference coordinates provide the maximum dimensions of a rectangle containing this survey unit. Some areas contained in this rectangle may not be part of this survey unit. The boundary of the survey unit was defined using a Global Positioning System (GPS) based on the Connecticut State Plane System 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 9805-0000 consisted of:

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

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

A review of the 10CFR50.75(g)(1) database report and historical files shows a documented history of the use of this survey unit as a radioactive materials storage area. Examples of some of the major events are provided below:

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RELEASE RECORD a) Plant Incident Report (PIR) 80-37 reported the discovery of two (2) discrete sources of elevated activity on the Upper Peninsula in March 1980, along with other areas around the site. According to Health Physics (HP) memo 80-213, which is an appendage of PIR 80-37, the ground level count rate over one (1) spot was fifteen thousand corrected counts above background (15,000 ccpm). After digging below about one and a half feet (1 2 ft) of dirt, a piece of concrete was found with a contact dose rate reading at 500 mR/hr and a dose rate of 20 mR/hr at one foot (1 ft). The activity was found above a piece of uncontaminated construction rubble. According to PIR 80-37, a possible mode of transfer of this contamination from the Radiologically Controlled Area (RCA) could have been from the use of contaminated tools or equipment during the storage of uncontaminated construction rubble; however, the time of deposit could not be determined. Isotopic analysis of this discrete source identified Co-60 as the predominate isotope at an estimated 1.27 millicuries.

Isotopic analysis of the other discrete source indicated that the short-lived fission products, such as Ce-144 and Ru-106, dominated the isotopic profile. According to PIR 80-37, the source of this elevated activity, as with other similar discrete sources found on the site, was most likely radioactive particulate ejected from the Primary Vent Stack as a result of operational events in 1979. Both elevated areas were removed upon detection according to the historical records.

b) In 1989, contaminated soil was found along the peninsula access road from both the upper and middle peninsula areas (Areas 9520 and 9530).

The soil was subsequently removed, and was determined to have come from the area south of the 115 kV switchyard (refer to PIR 89-3 5).

c) In March of 2006, Co-60 and Cs-137 were identified in subsurface soils in sufficient concentrations to warrant radiological remediation.

Radiological remediation was performed in July 2006. As a result, a Class B subsurface unit, Survey Unit 9807, was created in the Southeast Site Storage area and is contained within the boundaries of this survey area (9805).

d) In 2006, utilities were being removed as part of the decommissioning effort on the Upper Peninsula which included portions of this subsurface survey area. Construction debris including Asbestos Containing Material (ACM) was identified and remediated. In addition to the ACM, two (2) objects were also identified that had detectable radioactivity. The first was a piece of angle iron located in the water utility trench in Survey Area 9530, and the second was a weathered drum containing turbine blades in Survey Area 9520.

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RELEASE RECORD e) To further characterize the extent of buried metallic objects, and to identify if any additional drums were present, an Electromagnetic (EM) survey was performed. The survey was conducted in three phases from February 2006 through March 2006 and identified over ninety (90) locations which were then further characterized by test pitting the areas.

A total of ninety-four (94) test pits were completed to characterize subsurface materials.

A review of the "Initial and Supplemental CharacterizationReports" as well as the previous "Classification Basis Summaries" was performed. Survey Unit 9805-0000 was initially designated as Class C during the development of the LTP. The source documents, the "Connecticut Yankee Haddam Neck Characterization Report" and "Initial Classification for Survey Areas at Connecticut Yankee", were incorporated by reference in LTP revision 0 (references 2-2 and 2-7 respectively). Additional justification for a Class C designation based on survey and sampling data was provided as another reference to the LTP by the "Haddam Neck Plant HistoricalSite Assessment Supplement".

Removal of material and restoration of the peninsula for FSS has been ongoing since 2000 starting with the radiological release of the South Access Point and several abandoned trailers. The collapse of the Radioactive Material(s) Area (RMA) boundary and the removal of subsurface commodities has produced a large data set that has helped characterize the radiological contaminants of concern and extent of contamination. Although Co-60 has been identified in the past (e.g., the two discrete sources of elevated activity identified in March 1980), Cs-137 has been the only radionuclide that has been consistently reported in concentrations above detection levels and with the potential to exceed the screening criteria (refer to Section 3).

A radiological assessment plan (SSWP-06-01-004) was developed and implemented in January 2006 to support commodity removal. Soil samples were collected over the next couple months, including July 2006, to establish the radiological condition of the subsurface area impacted by the commodity removal. A review of a representative subset of these sample data shows the only radionuclide of concern to be Cs-137, which was reported at fairly low concentrations, and in many cases, was not identified in concentrations above two standard deviations error. These data and statistical parameters were used for Final Status Survey (FSS) planning. Statistical quantities from the characterization survey are provided in Table 1.

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RELEASE RECORD Minimum Observed Concentration (pCi/g) : -1.26E-02 Maximum Observed Concentration (pCi/g): 9.35E-02 Mean (pCi/g): 3.05E-02 Median (pCi/g): 2.18E-02 Standard Deviation (pCi/g): 3.17E-02 A FSS Engineer performed a visual inspection and walk-down during September 2006 to assess the physical condition of the survey unit, evaluate access points and travel paths and identify potentially hazardous conditions.

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

Based upon the results of radiological surveys performed over six (6) years of restoration and the 2006 characterization survey, it was concluded that there was a low probability for residual radioactivity to be present in concentrations greater than the DCGLs, justifying a final survey unit classification of Class C (refer to Section 3).

3. DATA QUALITY OBJECTIVES (DQO)

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

The DQO process incorporated hypothesis testing and probabilistic sampling distributions to control decision errors during data analysis. Hypothesis testing is a process based on the scientific method that compares a baseline condition to an alternate condition. The baseline condition is technically known as the null hypothesis. Hypothesis testing rests on the premise that the null hypothesis is true and that sufficient evidence must be provided for rejection. In designing the survey plan, the underlying assumption, or null hypothesis was that residual activity in the survey unit exceeded the release criteria. Rejection of the null hypothesis would indicate that residual activity within the survey unit does not exceed the release criteria. Therefore, the survey unit does satisfy the primary objective of the Final Status Survey Plan (FSSP).

The primary objective of the FSSP was to demonstrate that the level of residual radioactivity in Survey Unit 9805-0000 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).

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RELEASE RECORD A fundamental precursor to survey design is to establish a relationship between the release criteria and some measurable quantity of radioactivity. This is done through the development of DCGLs. The DCGLs represent average levels of radioactivity above background levels and are presented in terms of surface or mass activity concentrations. Chapter 6 of the LTP describes in detail the modeling used to develop the DCGLs for soil (called Base Case Soil DCGL),

existing groundwater radioactivity and future groundwater radioactivity that will be contributed by building basements and footings.

The DCGLs presented in Chapter 6 of the LTP were developed for exposures from three (3) components, that is, residual radioactivity in soil, existing groundwater radioactivity, and future groundwater radioactivity from the burial of concrete foundations or footings from site buildings containing residual radioactivity. Equation 1 shows the mathematical relationship between the three (3) components and the total dose.

Equation 1 HTotal Hsoii +HExistingGW +HFutureGW The total dose under the LTP criteria is twenty-five (25) mrem/yr TEDE from all three (3) components. The allowable total dose under the Connecticut Department of Environmental Protection (CTDEP) radiological remediation standard for CY is nineteen (19) mrem/yr TEDE. To satisfy both the LTP and CY CTDEP criteria, the dose from soil must be reduced when using the existing and future groundwater dose values discussed above.

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

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

Equation 2 19 mrem/yrTotal = 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) mremlyr 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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RELEASE RECORD C-14 5.66E+00 3.85E+00 2.26E-0I Mn-54 1.74E+01 1.18E+01 6.96E-0I Fe-55 2.74E+04 1.86E+04 1.1OE+03 Co-60 3.81 E+00 2.59E+00 1.52E-01 Ni-63 7.231E+02 4.92E+02 2.89E+O1 Sr-90 1.55E+00 1.05E+00 6.20E-02 Nb-94 7.12E+00 4.84E+00 2.85E-01 Tc-99 1.26E+OI 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-0I Eu-I152 1.01E+OI 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+O1 2.01E+01 1.18E+00 Pu-239/240 2.67E+OI 1.82E+01 1.07E+00 Pu-241 8.70E+02 5.92E+02 3.48E+O I Am-241(5) 2.58E+OI 1.75E+01 1.03E+00 Cm-243/244 2.90E+O 1 1.97E+01 1.1 6E+00 (I) Bold indicates those radionuclides considered to be hard to detect.

(2) The Base Case Soil DCGLs for soil are specified by the LTP in Chapter 6 and are equivalent to twenty-five (25) mrem/yr TEDE.

(3) The Operational DCGL is equivalent to seventeen (17) mrem/yr TEDE.

(4) The required MDC is equivalent to one (1) mrem/yr TEDE.

(5) Americium-241 can be analyzed by gamma and alpha spectroscopy and is considered to be Easy to Detect (ETD). The preferred result is the alpha spectroscopy's when both analyses are performed.

Another important facet of the DQO process is to identify the radionuclides of concern and determine the concentration variability. Soil samples were collected in 2006 to characterize the radiological condition of Survey Unit 9805-0000 and provide data for FSS plan development. Cs-137 was the only gamma emitting radionuclide reported in concentrations with the potential for exceeding the screening criteria. The characterization data was used for the survey design and are provided in Table 1 of this report.

As a component of the DQOs process that applies to laboratory analysis results, values were reported as actual calculated results and not as less than Minimum Revision 0 8 Revision 0 8

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RELEASE RECORD Detectable Concentration (MDC). Sample report summaries included unique sample identification, analytical method, radionuclide, result, and uncertainty to two (2) standard deviations, laboratory data qualifiers, units, and the required and observed MDC.

4. SURVEY DESIGN The level of effort associated with planning a survey is based on the complexity of the survey and nature of the hazards. Guidance for preparing FSS plans is provided in Procedure RPM 5.1-11, "Preparation of Final Status Survey Plans". The FSS Plan was developed based on the guidance provided in this procedure.

The DQO process determined that Cs- 137 was the only radionuclide of concern in Survey Unit 9805-0000 (refer to Section 3).

Surrogate DCGLs were not required for this survey unit based the characterization data results along with accepted screening parameters provided in Section 5.4.7.2 of the LTP, "Gross Activity DCGLs". Radionuclide screening or de-selection is a process where an individual radionuclide or aggregates may be considered insignificant and eliminated from the FSS. The criteria for de-selection are concentrations less than 5% for individual radionuclides and less than 10% for aggregates.

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

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

The number of soil samples for FSS was determined in accordance with Procedure RPM 5.1-12, "Determinationof the Number of Surface Samples for FinalStatus Survey." The Lower Bound of the Gray Region (LBGR) was set in accordance with Procedure RPM 5.1-11 to 5.31 to maintain the relative shift (A/co) in the range of 1 and 3. The resulting Adjusted Relative Shift was 2.0. A Prospective Power Curve was generated using COMPASS, a software package developed under the sponsorship of the United States Nuclear Regulatory Commission (USNRC) for implementation of the MARSSIM in support of the decommissioning license termination rule (10CFR20, Subpart E). The result of the COMPASS computer run showed adequate power for the survey design. 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.

The locations of the soil samples were determined using Visual Sample Plan (VSP) in accordance with Procedure RPM 5.1-14, "Identifying, and Marking Revision 0 9

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RELEASE RECORD 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.

Judgmental sampling was included as a feature of this survey design to account for any anomalies potentially identified in the field. Five (5) additional subsurface soil samples were taken in this survey unit at biased locations determined by the FSS Engineer with input from FSS Supervision.

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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RELEASE RECORD Table 3 -San ie~ Mareetcatins wýith.As~sociated GPS~&o~or~inaiites 1 ..esigpto. Northling

• Easting 9805-0000-001F 234806.27 671163.24 9805-0000-001FS 234806.27 671163.24 9805-0000-002F 235522.58 670585.49 9805-0000-003F 235108.08 670761.98 9805-0000-004F 235264.58 670664.34 9805-0000-004FS 235264.58 670664.34 9805-0000-005F 235161.91 671492.53 9805-0000-006F 235686.45 669582.03 9805-0000-007F 234979.41 671527.80 9805-0000-008F 235598.86 669981.67 9805-0000-009F 235746.54 669349.33 9805-0000-01 OF 235199.79 671125.76 9805-0000-011 F 235673.82 669616.49 9805-0000-012F 234814.33 671633.17 9805-0000-013F 235352.45 671415.67 9805-0000-014F 234911.61 671335.51 9805-0000-015F 236102.59 668877.77 9805-0000-016F 236057.35 668914.65 9805-0000-017F 235965.77 669081.53 9805-0000-018F 235948.06 669112.63 9805-0000-019F 235879.57 669241.74 9805-0000-020F 235235.37 670965.31 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 total number of samples that were 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 PotentiallyPresent at Haddam Neck Plant".

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RELEASE RECORD The implementation of quality control measures as referenced by Procedure RPM 5.1-24, "Split Sample Assessment for Final Status Survey," included the collection of two (2) soil samples for "split sample" analysis by the off-site laboratory. These locations were selected randomly using the Microsoft Excel "RANDBETWEEN" function. The number of quality control soil samples was about 13% of the number of samples that were used for non-parametric statistical testing.

Since 9805-0000 is a, subsurface survey unit, 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.

Tabhle 4- Synopsis ofthe SUvey Design~

A~~ Featu re . Desig**C riteria' Basis Subsurface Survey Unit 130,380 m2 Based on AutoCAD-LT Land Area Type I and Type 2 errors were 20 0.05, sigma was 0.032 pCi/g, Number of Measurements (15 random) LBGR was adjusted to 5.31 to (5 biased) maintain Relative Shift in the range of I and 3.

Random sampling for Class C Grid Spacing N/A in accordance with LTP.

Administratively set to achieve Operational DCGL 5.38 pCi/g Cs-137 seventeen (17) mrem/yr TEDE (1)

The Operational DCGL meets Soil Investigation Level 5.38 pCi/g Cs-137 the LTP criteria for 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 Work Plan and Inspection Record (WP&IR) 2006-0007. The WP&IR package included a detailed FSS plan, job safety analysis, job planning checklist and related procedures for reference. Daily briefings were conducted to discuss the expectations for job performance and the safety aspects of the survey. The "Daily Survey Journal" was used to document field activities and other information pertaining to the FSS.

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RELEASE RECORD Measurement locations were identified in North American Datum (NAD) 1927 coordinates using GPS coordinates; sample locations were identified and marked with a surveyor's flag or paint for identification.

Twenty (20) subsurface soil samples were collected and packaged in accordance with Haddam Neck Plant (HNP) Procedure RPM 5.1-3, "Collection of Sample Media for Final Status Survey" and FSS design. Samples were controlled, transported, stored, and transferred to the off-site laboratory using Chain-of-Custody (COC) protocol in accordance with Procedure RPM 5.1-5, "Chain of Custodyfor FinalStatus Survey Samples."

Two (2) samples (9805-0000-008F and 9805-0000-013F) were randomly selected for HTD radionuclide analysis.

The implementation of survey specific quality control measures included the collection of two (2) samples (9805-0000-001F and 9805-0000-004F) for "split sample" analysis.

6. SURVEY RESULTS All field survey activities were conducted between September 20, 2006 and September 26, 2006.

The off-site laboratory employed for the radiological analyses of samples was General Engineering Laboratories (GEL), LLC. The laboratory analyzed the fifteen (15) samples collected for non-parametric statistical testing, the associated field splits, and five (5) biased samples using gamma spectroscopy.

Gamma spectroscopy analysis was performed to the required MDCs. Gamma spectroscopy results identified only Cs-137 as meeting the accepted criteria for detection (i.e., a result greater than two standard deviations uncertainty).

Cs-137 was positively identified in four (4) of the fifteen (15) samples collected for non-parametric statistical testing. Cs-137 was the primary radionuclide confirming the DQOs. The mean of the gamma spectroscopic analysis results for the sample population indicated that Cs-137 was present at levels approaching or lower than the concentrations of Cs-137 found in soil at off-site locations within the vicinity of the HNP as presented in the Health Physics TSD BCY-HP-0063.

A summary of the fifteen (15) samples collected for non-parametric statistical testing results is provided in Table 5. Refer to Attachment 2 for complete laboratory analysis results.

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RELEASE RECORD 9805-0000-002F 1.64E-02 -0.001 9805-0000-003F 8.83E-02 0.024 9805-0000-004F 2.68E-02 0.006 9805-0000-005F 2.11E-02 0.007 9805-0000-006F 9.1OE-03 -0.005 9805-0000-007F -4.24E-03 0.001 9805-0000-008F 6.28E-02 0.013 9805-0000-009F 1.47E-02 0.004 9805-0000-01OF 5.13E-02 0.016 9805-0000-01 IF 1.60E-02 0.006 9805-0000-012F 1.04E-02 0.001 9805-0000-013F 1.71E-03 0.001 9805-0000-014F 1.11E-02 0.002 9805-0000-015F 6.93E-02 0.015 (1) The Operational DCGL from Table 2 is 5.38 pCi/g for Cs-137 to achieve seventeen (17) mrem/yr TEDE.

The off-site laboratory also processed two (2) samples for HTD analysis as required by the sample plan. The requested analyses included alpha spectroscopy, gas proportional counting, and liquid scintillation depending on the radionuclide and the measurement method. All analyses met the required MDC.

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. The results of samples that were analyzed for HTD radionuclides, by the off-site laboratory, indicated that they were all less than the accepted criteria for detection (i.e., a result greater than two standard deviations uncertainty).

Five (5) biased samples were collected at locations selected by FSS Supervision based on professional judgment and observation. Gamma spectroscopy analysis was performed by the off-site laboratory to the required MDC. A summary of the five (5) biased sample results is provided in Table 6 of this report. Refer to for complete laboratory analysis results.

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RELEASE RECORD YZSUDIUUUUIU I oil 0.OOE+00 0.000 9805-0000-017F 3.42E-02 0.006 9805-0000-018F 2.57E-02 0.005 9805-0000-019F -4.79E-03 -0.001 9805-0000-020F 2.89E-02 0.005 (1) The Operational DCGL from Table 2 is 5.38 pCi/g for Cs-137 to achieve seventeen (17) mrem/yr TEDE.

7. QUALITY CONTROL The off-site laboratory processed the split samples and performed gamma spectroscopy analysis. Ten percent (10%) of the samples were selected for analysis, which exceeds the 5% minimum required by the LTP. The data were evaluated using USNRC acceptance criteria specified in Inspection Procedure 84750 as detailed in HNP Procedure RPM 5.1-24, "Split Sample Assessment for FinalStatus Survey ".

Cs-137 was not detected in sufficient quantities in the field split results at locations 9805-0000-001 or 9805-0000-004 to evaluate in accordance with procedure. Evaluation using the reported results for 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 A remediation was performed on the peninsula and subsurface survey unit 9807-0000 was created at the location of the remediation, see Section 1.

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 No changes were made to the FSS plan for this survey unit.

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RELEASE RECORD

11. DATA QUALITY ASSESSMENT (DQA)

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

The sampling design had adequate power as indicated by the Retrospective Power Curve. The Sign Test was performed on the data and compared to the original assumptions of the DQOs. The evaluation of the Sign Test results demonstrates that the survey unit passes the unrestricted release criteria, thus, the null hypothesis is rejected.

Documentation was complete and legible. Sample collection was consistent with the DQOs and was 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. Also, the retrospective power curve shows that a sufficient number of samples were collected to achieve the desired power.

Therefore, the survey unit meets the unrestricted release criteria with adequate power as required by the DQOs.

For Cs-137, the range of the data, about 3.3 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 40% of the standard deviation which indicates significant 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 1.17.

All data, assessments, and graphical representations are provided in Attachment 3.

12. ANOMALIES No anomalies were noted.

13. CONCLUSION Survey Unit 9805-0000 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 and remediation was not required.

The sample data passed the Sign Test. The null hypothesis was rejected. The Retrospective Power Curve generated using COMPASS shows adequate power was achieved. The survey unit is properly designated as Class C.

The dose contribution from soil is less than 0.5 mrem/yr TEDE based on the average concentration of the samples used for non-parametric statistical sampling.

Revision 0 16

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

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 underground structures, systems or components containing residual radioactive material within the groundwater saturated zone in the area (reference CY memo ISC 06-024); therefore, the dose contribution from future groundwater is zero (0) mrem/yr TEDE.

The average total dose from residual radioactivity in this survey unit, including exposures from the three (3) components as described in Section 3, that is, residual radioactivity in soil, existing groundwater radioactivity, and future groundwater radioactivity from the burial of concrete foundations or footings from site buildings containing residual radioactivity, will not exceed 2.5 mrem/yr TEDE. Therefore, Survey Unit 9805-0000 is acceptable for unrestricted release.

14. ATTACHMENTS 14.1 Attachment 1 - Figures 14.2 Attachment 2 - Laboratory Data 14.3 Attachment 3 - DQA Results Revision 0 17 Revision 0 17

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

RELEASE RECORD ATTACHMENT 1 (FIGURES)

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-wA-" IhI '

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Da: Novemb 2006 Conneccut Yankee Atmic PowerCompay Figur 3 Swvvy Unit9805 C*im-137PostingPlot(,oCi/)

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

RELEASE RECORD ATTACHMENT 2 (LABORATORY DATA)

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

C, Meeting Today's Needs with a Vision for Tomorrow roR~t5 October 12, 2006 Mr. Jack McCarthy Connecticut Yankee Atomic Power 362 Injun Hollow Rd East Hampton, Connecticut 06424 Re: Soils PO# 002332 Work Order: 172879 SDG: MSR#06-1311

Dear Mr. McCarthy:

General Engineering Laboratories, LLC (GEL) appreciates the opportunity to provide the following analytical results for the sample(s) we received on September 29, 2006. This data report has been prepared and reviewed in accordance with GEL's standard operating procedures.

Our policy is to provide high quality, personalized analytical services to enable you to meet your analytical needs on time every time. We trust that you will find everything in order and to your satisfaction. If you have any questions, please do not hesitate to call me at (843) 556-8171, ext. 4243.

Sincerely, Cheryl ýJones Project Manager Purchase Order: 002332 Chain of Custody: 2006-577 and 2006-578 Enclosures P.O. BOX 30712 Charleston, SC 29417

• 2040 Savage Road (29407)

Phone (843) 656-8171

• Fax (843) 766-1178 www.gel.com

Connecticut Yankee Atomic Power Co.

Soils PO# 002332 Work Order: 172879 SDG: MSR#06-1311 Laboratory ID Client ID 172879001 9805-0000-008F 172879002 9805-0000-009F 172879003 9805-0000-015F 172879004 9805-0000-006F 172879005 9805-0000-019F 172879006 9805-0000-017F 172879007 9805-0000-013F 172879008 9805-0000-016F 172879009 9805-0000-014F 172879010 9805-0000-01 IF 172879011 9805-0000-005F 172879012 9805-0000-018F 172879013 9805-0000-020F 172879014 9805-0000-01OF 172879015 9805-0000-OOIF 172879016 9805-0000-OO1FS 172879017 9805-0000-004F 172879018 9805-0000-004FS 172879019 9805-0000-002F 172879020 9805-0000-003F 172879021 9805-0000-012F 172879022 9805-0000-007F

Table of Contents General Narrative .................................................................. 1 Chain of Custody and Supporting Documentation ........... 5 Data Review Qualifier Definitions ....................................... 10 Radiological Analysis ........................................................... 12 Sample Data Summary ..................................................... 34 Q uality C ontrol D ata ......................................................... 82

General Narrative 1

General Narrative for Connecticut Yankee Atomic Power Co.

Work Order: 172879 SDG: MSR#06-1311 October 12, 2006 Laboratory Identification:

General Engineering Laboratories, LLC 2040 Savage Road Charleston, South Carolina 29407 (843) 556-8171 Summary Sample receipt The samples arrived at General Engineering Laboratories, LLC, Charleston, South Carolina on September 29, 2006 for analysis. Shipping container temperatures were checked, documented, and within specifications. The samples were delivered with proper chain of custody documentation and signatures. All sample containers arrived without any visible signs of tampering or breakage.

Sample Identification The laboratory received the following samples:

Laboratory Sample Identification Description 172879001 9805-0000-008F 172879002 9805-0000-009F 172879003 9805-0000-015F 172879004 9805-0000-006F 172879005 9805-0000-019F 172879006 9805-0000-017F 172879007 9805-0000-013F 172879008 9805-0000-016F 172879009 9805-0000-014F 172879010 9805-0000-01 IF 172879011 9805-0000-005F 172879012 9805-0000-018F 172879013 9805-0000-020F 172879014 9805-0000-01OF 172879015 9805-0000-00IF 172879016 9805-0000-OO1FS 172879017 9805-0000-004F 172879018 9805-0000-004FS 172879019 9805-0000-002F 172879020 9805-0000-003F 172879021 9805-0000-012F 172879022 9805-0000-007F GENERAL ENGINEERING LABORATORIES, LLC a Member of THE GEL GROUP, INC.

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

Phone (843) 556-8171 - Fax-343) 766-1178 www.gel.com

Items of Note There are no items to note.

Case Narrative Sample analyses were conducted using methodology as outlined in General Engineering Laboratories (GEL)

Standard Operating Procedures. Any technical or administrative problems during analysis, data review, and reduction are contained in the analytical case narratives in the enclosed data package.

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

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

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

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

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

Phone (843) 556-8171 - Fax343) 766-1178 www.gel.com

List of current GEL Certifications as of 12 October 2006 State Certification Alaska UST-062 Arizona AZ0668 Arkansas 88-0651 CLIA 42D0904046 California 01151CA Colorado GenEngLabs Connecticut PH-0169 Dept. of Navy NFESC 413 EPA WG- 15J Florida/NELAP E87156 Georgia E87156 (FI/NELAP)

Hawaii N/A Idaho N/A Illinois 200029 Indiana C-SC-01 Kansas E-10332 Kentucky 90129 Louisiana 03046 Maryland 270 Massachusetts M-SC012 Michigan 9903 Nevada SC12 New Jersey SC002 New Mexico FL NELAP E87156 New York 11501 North Carolina 233 North Carolina Drinking W 45709 North Dakota R-158 Oklahoma 9904 Pennsylvania 68-00485 South Carolina 10120001/10585001/10120002 Tennessee 02934 Texas TX213-2006A Texas NELAP T104704235-06-TX U.S. Dept. of Agriculture S-52597 US Army Corps of Engineer N/A Utah 8037697376 GEL Vermont VT87156 Virginia 00151 Washington C 1641 4

Chain of Custody and Supporting Documentation 5

Health Physics Procedure GPP-GGGR-R5104-003-Attachment B-CY-001 Major Connecticut Yankee Atomic Power Company Chain of Custody Form No. 2006-577 362 Injun Hollow Road, East Hampton, CT 06424 860-267-2556 .

Project Name: Haddam Neck Analyses Requested Lab Use Only Decommissioning Contact Name & Phone: Comments:

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

Priority: F1 30 D. H 14 D. E] 7 D.

Other: ri __

Sample Designation Date Time *

• Comment, Preservation Lab Sample ID 9805-0000- og -Fp */z/0 6 /o 5- TS C BP x 9805-0000-0p9o/o1 .f /, TS C BP ,_

9805-0000-O--A 1 /,3c TS C BP A.X 9805-0000-0/-r, If- Z? -O / oo1 TS C BP V 9805-0000-p I+- 17)!. 0 6 J3 0,5" TS C BP 9805-0000-0Li17 -7 ,6 o J.3 ?o TS C BP .X 9805-0000-C)/3 -f 9-/ " TS C BP __

V 9805-0000-* C5 j6-2s6

-, TS C BP __

9805-0000-6 / q -r -,___-_6

_ __oO TS C BP x._-

9805-0000-o i/1 -9 2 J0 /,y-1 TS C BP L 9805-0000- oo.p&4, -?S'-oC Io3s' TS C BP ,( _

NOTES: PO #: 002332 MSR #:O(,- [E, LTP QA E] Radwaste QA E] Non Samples Shipped Via: Internal Container QA E Fed Ex Temp.Q___ Deg. C El UPS D] Hand Custody Sealed?

y N

1) Relinquished By Date/Time 2M ived By Date/Time Custy Seal Intact?

k c-, y0ý0I E] Other

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

Connecticut Yankee Statement of Work for Analytical Lab Services CY-ISC-SOW-O01 Figure 1. Sample Check-in List Date/Time Received- 9',30at.3ý SDG#:

Work Order Number: 9'1*

Shipping C Cdntainer ID: *. ORD(a1 Chain of Custody# "?00(,o - $ 77

1. Custody Seals or/shipping container intact?" Yes ()*<No []

2. Custody Seals dated and signed? Yes s' o [I].

o-2.

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

4. Cooler temperature 1

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

6. Number of samples in shipping container: t I

7. Sample holding times exceeded? Yes [No

.8. Sanpies have:

jjtape -hazard labels

__ custody seals appropriate sample labels

9. Samples are.

in good condition leaking broken have air bubbles

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

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

Sample CustodianlLaboratory: C A*J, , Date.:_ (.q/

Telephoned to: On By_

(

Health Physics Procedure GPP-GGGR-R5104-003-Attachment B-CY-001 Major Connecticut Yankee Atomic Power Company Chain of Custody Form No. 2006-578 362 Injun Hollow Road, East Hampton, CT 06424 860-267-2556 Project Name: Haddam Neck Analyses Requested LabibUse Only D ecom missioning ______... ...... ... _.. .______

. ___..

..

Contact Name & Phone: Comments:

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

Priority: R 30 D. Z 14 D. [:D7 D.

O the r: __ . .. .

VI) V)#

Sample Designation Date Time a10 Comment, Preservation Lab Sample ID p 9805-0000- bt -, q-tcq-(A CJAi - TS C BP X" 9805-0000- (cF q-tq.A- TS C BP _"

9805-0000-0 O - \. 0jg \LA;-

Ct-ikr T$ C BP ___

9805-0000-001 -r Tq-o0 0 TS C BP __

C 9805-0000-0 /-)I9--19o6 j-'o TS C BP x _

9805-0000-ooq -F -2z "2-, jo TS C BP X_

9805-0000-nq -- n 9-zo(, . TS C BP .

9805-0000-000 -r 9- zz-o0 101o TS C BP _

6' 9805-0000-0,03- F 2-tz- o(. 133,5 TS C BP X2 ....

'p 9805-0000-O* IQ 9-,Z. o& /0,90 TS C BP .* _

0 9805-0000- 00 "7-r 19 2Z-O, I/I TS C BP )(, .... .. .___,___

._

NOTES: PO #: 002332 MSR #:Upo- 13 II Z LTP QA Dj Radwaste QA ED Non Samples Shipped Via: Internal Container' QA Z Fed Ex Temp. L 2Deg.C El UPS El Hand ICustod~ Sealed?

YN:

1) Relinquished By Date/Time eiedBY Date/Time 'Custody Seal Intact?

El Other

3) Relinquished By Date/Time 4) Received By BillDate/Time ofL #Y N Bill of Lading #

• Connecticut Yankee Statement of Work for Analytical Lab Services CY-ISC-SOW-00I

, Figure 1. Sample Check-in List.

Date/Time Received: " ,O(a9 SDG#: ' - \

Work Order Number: Y+/-2--f "

Shipping Container ID.1 q Chain of Custody# c;707 '

1. Custody Seals ori shipping container intact? Yes No[

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

3. Chain-of-Custo'Jy record present? Yes No ]

4. Cooler temperature ( O.

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

6: Number of samples in shipping container: ____

7. Sample holding times exceeded? Yes [ No

8. Samples have:

_2 tape -hazard labels

-.....

Custody seal~s -..appropriate Sample labels

9. Samples are'

1. ngood condition l.....eaking

-.broken . h have air bubbles

10. Were any anomalies identified in sample receipt? Yes 1:

11.. *Description of anomalies (include sample numbers): ,,k- .r.cc1 Sample Custodian/Laboratory: t - Dt.___"____

TelephonedtoO B-Date.

Telephoned to::n "

By

Data Review Qualifier Definitions 10

Data Review Qualifier Definitions Qualifier Explanation

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

• • Analyte is a surrogate compound

• Result is less than value reported

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

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

P.O. BOX 30712 Charleston, SC 29417

• 2040 Savage Road (29407)

Phone (843) 556-8171

• FaLI&3) 766-1178 www.gel.com

RADIOLOGICAL ANALYSIS 12

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

Work Order 172879 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: 578044 Prep Batch Number: 574186 Dry Soil Prep GL-RAD-A-021 Batch Number: 574161 Sample ID Client ID 172879001 9805-0000-008F 172879007 9805-0000-013F 1201204515 Method Blank (MB) 1201204516 172879001 (9805-0000-008F) Sample Duplicate (DUP) 1201204517 172879001(9805-0000-008F) Matrix Spike (MS) 1201204518 Laboratory Control Sample (LCS)

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

13

Quality Control (Q0 Information:

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

Designated QC The following sample was used for QC: 172879001 (9805-0000-008F).

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 relative percent difference/relative error ratio.

Miscellaneous Information:

NCR Documentation Nonconformance reports are generated to document any procedural anomalies that may deviate from referenced SOP or contractual documents. 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 14

Product: Liquid Scint Pu241, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Pu- 11-RC Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 574558 Prep Batch Number: 574186 Dry Soil Prep GL-RAD-A-021 Batch Number: 574161 Sample ID Client ID 172879001 9805-0000-008F 172879007 9805-0000-013F 1201197066 Method Blank (MB) 1201197067 172879001(9805-0000-008F) Sample Duplicate (DUP) 1201197068 172879001 (9805-0000-008F) Matrix Spike (MS) 1201197069 Laboratory Control Sample (LCS)

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

Calibration Information:

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

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

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

Quality Control (00 Information:

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

Designated QC The following sample was used for QC: 172879001 (9805-0000-008F).

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

15

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 low/high recovery.

Miscellaneous Information:

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

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: 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: 578046 Prep Batch Number: 574186 Dry Soil Prep GL-RAD-A-021 Batch Number: 574161 16

Sample ID Client ID 172879001 9805-0000-008F 172879007 9805-0000-013F 1201204519 Method Blank (MB) 1201204520 172879001 (9805-0000-008F) Sample Duplicate (DUP) 1201204521 172879001(9805-0000-008F) Matrix Spike (MS) 1201204522 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-01 I 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 (Q0 Information:

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

Designated QC The following sample was used for QC: 172879001 (9805-0000-008F).

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 172879001 (9805-0000-008F) and 172879007 (9805-0000-013F) were reprepped due to high relative percent difference/relative error ratio.

Miscellaneous Information:

NCR Documentation 17

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: 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: 574336 Prep Batch Number: 574169 Sample ID Client ID 172879021 9805-0000-012F 172879022 9805-0000-007F 1201196539 Method Blank (MB) 1201196540 172275028(9807-0000-025F) Sample Duplicate (DUP) 1201196541 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-013 REV# 12.

Calibration Information:

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

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

Sample Geometry 18

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: 172275028 (9807-0000-025F).

QC Information Refer to Non-Conformance Report.

Technical Information:

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

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

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

Miscellaneous Information:

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

NCR 368031 was generated due to Failed RPD for DUP. 1. Failed RPD for DUP: The relative percent difference (172275028 and 120119654) for K-40 and Pb-212 did not meet the duplication criteria. 1.

K-40 and Pb-212 are naturally occurring nuclides. All other nuclides meet within the duplication criteria. Reporting results.

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

Qualifier information Qualifier Reason Analyte Sample UI Data rejected due to low abundance. Cesium-134 1201196540 Method/Analysis Information 19

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: 574337 Prep Batch Number: 574161 Sample ID Client ID 172879001 9805-0000-008F 172879002 9805-0000-009F 172879003 9805-0000-015F 172879004 9805-0000-006F 172879005 9805-0000-019F 172879006 9805-0000-017F 172879007 9805-0000-013F 172879008 9805-0000-016F 172879009 9805-0000-014F 172879010 9805-0000-01 IF 172879011 9805-0000-005F 172879012 9805-0000-018F 172879013 9805-0000-020F 172879014 9805-0000-01OF 172879015 9805-0000-00IF 172879016 9805-0000-OO1FS 172879017 9805-0000-004F 172879018 9805-0000-004FS 172879019 9805-0000-002F 172879020 9805-0000-003F 1201196542 Method Blank (MB) 1201196543 172879001(9805-0000-008F) Sample Duplicate (DUP) 1201196544 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-013 REV# 13.

Calibration Information:

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

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

20

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

Quality Control (Q0 Information:

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

Designated QC The following sample was used for QC: 172879001 (9805-0000-008F).

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 21

Qualifier Reason Analyte Sample U' Data rejected due to high counting uncertainty. Bismuth-212 172879019 UI Data rejected due to high peak-width. Cesium- 137 172879008 1201196543 UI Data rejected due to interference. Cesium- 134 1201196543 Europium- 155 172879013 172879016 U' Data rejected due to low abundance. Cesium- 134 172879004 172879005 172879006 172879009 172879011 172879015 172879018 172879019 172879020 Lead-212 1201196542 Silver-108m 172879007 Method/Analysis Information Product: GFPC, Sr9O, solid-ALL FSS Analytical Method: EPA 905.0 Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 574221 Prep Batch Number: 574186 Dry Soil Prep GL-RAD-A-021 Batch Number: 574161 22

Sample ID Client ID 172879001 9805-0000-008F 172879007 9805-0000-013F 1201196231 Method Blank (MB) 1201196232 172875011(9520-0003-01OF) Sample Duplicate (DUP) 1201196233 172875011(9520-0003-O0OF) Matrix Spike (MS) 1201196234 Laboratory Control Sample (LCS)

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

Calibration Information:

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

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

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

Quality Control (00 Information:

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

Designated QC The following sample was used for QC: 172875011 (9520-0003-010F).

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

Technical Information:

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

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

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

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

23

Miscellaneous Information:

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint Tc99, Solid-ALL FSS Analytical Method: DOE EML HASL-300, Tc-02-RC Modified Analytical Batch Number: 574010 Sample ID Client ID 172879001 9805-0000-008F 172879007 9805-0000-013F 1201195648 Method Blank (MB) 1201195649 172879001(9805-0000-008F) Sample Duplicate (DUP) 1201195650 172879001(9805-0000-008F) Matrix Spike (MS) 1201195651 Laboratory Control Sample (LCS)

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

Calibration Information:

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

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

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

24

Quality Control (Q0 Information:

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

Designated QC The following sample was used for QC: 172879001 (9805-0000-008F).

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 172879007 (9805-0000-013F) was recounted due to high MDA.

Miscellaneous Information:

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint Fe55, Solid-ALL FSS Analytical Method: DOE RESL Fe- 1, Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 574527 Prep Batch Number: 574186 Dry Soil Prep GL-RAD-A-021 Batch Number: 574161 25

Sample ID Client ID 172879001 9805-0000-008F 172879007 9805-0000-013F 1201196975 Method Blank (MB) 1201196976 172875001(9520-0003-002F) Sample Duplicate (DUP) 1201196977 172875001(9520-0003-002F) Matrix Spike (MS) 1201196978 Laboratory Control Sample (LCS)

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

Calibration Information:

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

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

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

Quality Control (QC) Information:

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

Designated QC The following sample was used for QC: 172875001 (9520-0003-002F).

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

Technical Information:

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

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

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

26

Miscellaneous Information:

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: Liquid Scint Ni63, Solid-ALL FSS Analytical Method: DOE RESL Ni- 1, Modified Prep Method: Ash Soil Prep Dry Soil Prep GL-RAD-A-021 Method: Dry Soil Prep Analytical Batch Number: 574530 Prep Batch Number: 574186 Dry Soil Prep GL-RAD-A-021 Batch Number: 574161 Sample ID Client ID 172879001 9805-0000-008F 172879007 9805-0000-013F 1201196983 Method Blank (MB) 1201196984 172879007(9805-0000-013F) Sample Duplicate (DUP) 1201196985 172879007(9805-0000-013F) Matrix Spike (MS) 1201196986 Laboratory Control Sample (LCS)

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

Calibration Information:

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

27

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

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

Quality Control (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: 172879007 (9805-0000-013F).

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

Technical Information:

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

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

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

Miscellaneous Information:

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

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

Qualifier information Manual qualifiers were not required.

Method/Analysis Information Product: LSC, Tritium Dist, Solid-HTD2,ALL FSS Analytical Method: EPA 906.0 Modified Analytical Batch Number: 579033 28

Sample ID Client ID 172879001 9805-0000-008F 172879007 9805-0000-013F 1201206809 Method Blank (MB) 1201206810 172879001(9805-0000-008F) Sample Duplicate (DUP) 1201206811 172879001(9805-0000-008F) Matrix Spike (MS) 1201206812 Laboratory Control Sample (LCS)

SOP Reference Procedure for preparation, analysis and reporting of analytical data are controlled by General Engineering Laboratories, LLC as Standard Operating Procedure (SOP). The data discussed in this narrative has been analyzed in accordance with GL-RAD-A-002 REV# 13.

Calibration Information:

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

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

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

Quality Control (Q0 Information:

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

Designated QC The following sample was used for QC: 172879001 (9805-0000-008F).

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 172879001 (9805-0000-008F) was recounted due to high MDA. Samples were reprepped due to low/high recovery.

29

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: 574014 Sample ID Client ID 172879001 9805-0000-008F 172879007 9805-0000-013F 1201195657 Method Blank (MB) 1201195658 172875001 (9520-0003-002F) Sample Duplicate (DUP) 1201195659 172875001 (9520-0003-002F) Matrix Spike (MS) 1201195660 Laboratory Control Sample (LCS)

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

Calibration Information:

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

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

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

30

Quality Control (0C) Information:

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

Designated QC The following sample was used for QC: 172875001 (9520-0003-002F).

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

Technical Information:

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

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

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

Miscellaneous Information:

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

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

Qualifier information Manual qualifiers were not required.

Certification Statement Where the analytical method has been performed under NELAP certification, the analysis has met all of the requirements of the NELAC standard unless otherwise noted in the analytical case narrative.

Review Validation:

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

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

31

R evi ewer/flnte" Reviewer/Date:

32

General Engineering Laboratories NCR Report No.: 368031 Form GEL-NCR Revision No.: 1 Rev. 06/05 COMPANY - WIDE NONCONFORMANCE REPORT Mo.Day Yr. Division: Quality Criteria: Type:

05-OCT-06 Radiochemistry Specifications Process Instrument Type: Test / Method: Matrix Type: Client Code:

GAMMA SPECTROMETER EML HASL 300, 4.5.2.3 Solid YANK Batch ID: Sample Numbers:

574336 See Below Potentially affected work order(s)(SDG): 172275(MSR#06-1282),172873(MSR#06-1313),172875(MSR#06-1312),172879(MSR#06-1311)

Application Issues:

Failed RPD for DUP Specification and Requirements NRG Disposition:

Nonconformance

Description:

1. Failed RPD for DUP: The relative percent difference (172275028 1. K-40 and Pb-212 are naturally occurring nuclides. All other nuclides and 120119654) for K-40 and Pb-212 did not meet the duplication meet within the duplication criteria. Reporting results.

criteria.

Originator's Name: Data Validator/Group Leader:

Jimmy Hartley 05-OCT-06 Lesley Anderson 09-OCT-06 Quality Review:

Director:

Page 1 33

SAMPLE DATA

SUMMARY

34

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

Client SDG: MSR#06-1311 GEL Work Order: 172879 The Qualifiers in this report are defined as follows:

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

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

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

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

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

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

Reviewed by 35

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-008F Project: YANK01204 Sample ID: 172879001 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 20-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 22.9%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Alpha Spec Analysis Alphaspec Am241, Cm, Solid ALL FSS Americium-241 U -0.0902 +/-0.120 0.136 +/-0.121 0.364 pCi/g JAS1 10/12/06 1617 578044 1 Curium-242 U -0.143 +/-0.0702 0.134 +/-0.0724 0.369 pCi/g Curium-243/244 U -0.0746 +/-0.172 0.167 +/-0.173 0.425 pCi/g Alphaspec Pu, Solid-ALL FSS Plutonium-238 U -0.0161 +/-0.127 0.112 +/-0.127 0.302 pCi/g JASI 10/12/06 1204 578046 3 Plutonium-239/240 U 0.047 +/-0.135 0.0963 +/-0.135 0.270 pCi/g Liquid Scint Pu241, Solid-ALL FSS Plutonium-241 U 2.68 +/-7.20 5.92 +/-7.20 12.4 pCi/g JAS1 10/10/06 1648 574558 5 Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.897 +/-0.244 0.0721 +/-0.244 0.159 pCi/g MJH1 10/10/06 0811 574337 7 Americium-241 U 0.0267 F/-0.0306 0.0277 +/-0.0306 0.0576 pCi/g Bismuth-212 0.812 +/-0.347 0.146 +/-0.347 0.320 pCi/g Bismuth-214 0.605 F/-0.0985 0.0413 +/-0.0985 0.0884 pCi/g Cesium-134 U 0.0441 F/-0. 03 79 0.0305 +/-0.0379 0.0651 pCi/g Cesium-137 0.0628 +/-0.0298 0.0189 +/-0.0298 0.0412 pCi/g Cobalt-60 U 0.00292 - +/-0.0266 0.0227 +/-0.0266 0.051 pCi/g Europium-152 U 0.0115 -+/-0.0583 0.0504 +/-0.0583 0.107 pCi/g Europium-154 U -0.0674 -+I-0.0873 0.0661 +/-0.0873 0.147 pCi/g Europium-155 U 0.0406 FI-0.0597 0.0464 +/-0.0597 0.0967 pCi/g Lead-212 0.941 - i-/-0.0704 0.0284 +/-0.0704 0.0596 pCi/g Lead-214 0.743 F/-0.0907 0.0384 +/-0.0907 0.0813 pCi/g Manganese-54 U 0.00738 F/-0.0274 0.0235 +/-0.0274 0.0509 pCi/g Niobium-94 U-0.000653 F/-0.0237 0.0202 +/-0.0237 0.0434 pCi/g Potassium-40 14.8 +1-1.20 0.188 +/-1.20 0.431 pCi/g Radium-226 0.605 +/-0.0985 0.0413 +/-0.0985 0.0884 pCi/g Silver-108m U -0.0179 F/-0.0198 0.0164 +/-0.0198 0.0354 pCi/g Thallium-208 0.323 F/-0.0621 0.0219 +/-0.0621 0.047 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr90, solid-ALL FSS Strontium-90 U -0.0136 +/-0.00982 0.00955 +/-0.00982 0.021 pCi/g KSD1 10/04/06 2326 574221 8 Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid-HTD2,ALL FSS Tritium U -3.35 +/-6.99 6.06 +/-6.99 12.9 pCi/g MXP1 10/17/06 1654 579033 9 36

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-008F Project: YANK01204 Sample ID: 172879001 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Liquid Scintillation Analysis Liquid Scint C14, Solid AIIFSS Carbon- 14 U -0.00713 +/-0.0754 0.0636 +/-0.0754 0.133 pCi/g AXD2 10/03/06 2107 574014 13 Liquid Scint Fe55, Solid-ALL FSS Iron-55 U -11.1 +/-36.9 26.6 +/-36.9 55.5 pCi/g MXP1 10/04/06 2022 574527 14 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 U 2.80 +/-5.46 4.47 +/-5.46 9.36 pCi/g MXP1 10/06/06 1032 574530 15 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U -0.0681 +/-0.263 0.223 +/-0.263 0.460 pCi/g KXR1 10/09/06 0823 574010 17 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 09/29/06 1557 574161 The following Analytical Methods were performed Method Description 1 DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Am-05-RC Modified 3 DOE EML HASL-300, Pu- 11-RC Modified 4 DOE EML HASL-300, Pu-iI-RC Modified 5 DOE EML HASL-300, Pu- 11 -RC Modified 6 DOE EML HASL-300, Pu-11-RC Modified 7 EML HASL 300, 4.5.2.3 8 EPA 905.0 Modified 9 EPA 906.0 Modified 10 EPA 906.0 Modified 11 EPA 906.0 Modified 12 EPA 906.0 Modified 13 EPA EERF C-01 Modified 14 DOE RESL Fe-I, Modified 15 DOE RESL Ni-1, Modified 16 DOE RESL Ni-1, Modified 17 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Test Recovery % Acceptable Limits 37

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-008F Project: YANK01204 Sample ID: 172879001 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Surrogate/Tracer recovery Test Recovery % Acceptable Limits Americium-243 Alphaspec Am241, Cm, Solid ALL 82 (15%-125%)

Plutonium-242 Alphaspec Pu, Solid-ALL FSS 97 (15%-125%)

Carrier/Tracer Recovery Liquid Scint Pu241, Solid-ALL FS 96 (25%- 125%)

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

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

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

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

Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported

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

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

38

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-009F Proiect: YANK01204 Sample ID: 172879002 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 20-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 25.5%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 1.17 +/-0.255 0.114 +/-0.255 0.249 pCi/g MJHI 10/10/060811 574337 1 Americium-241 U 0.0312 +/-0.048 0.045 +/-0.048 0.0932 pCi/g Bismuth-212 0.812 +/-0.458 0.267 +/-0.458 0.575 pCi/g Bismuth-214 0.763 +/-0.151 0.0644 +/-0.151 0.138 pCi/g Cesium-134 U 0.0688 +/-0.0507 0.0405 +/-0.0507 0.0874 pCi/g Cesium-137 U 0.0147 +/-0.0426 0.0371 +/-0.0426 0.0796 pCi/g Cobalt-60 U 0.00264 +/-0.0371 0.0316 +/-0.0371 0.0716 pCi/g Europium-152 U -0.046 +/-0.0783 0.0664 +/-0.0783 0.142 pCi/g

.Europium-154 U -0.135 +/-0.148 0.0886 +/-0.148 0.200 pCi/g Europium-155 U -0.0469 +/-0.0775 0.0669 +/-0.0775 0.139 pCi/g Lead-212 1.29 +/-0.102 0.0411 +/-0.102 0.0863 pCi/g Lead-214 1.03 +/-0.143 0.0528 +/-0.143 0.112 pCi/g Manganese-54 U -0.0197 +/-0.0423 0.0333 +/-0.0423 0.0724 pCi/g Niobium-94 U 0.0266 +/-0.0496 0.0289 +/-0.0496 0.0626 pCi/g Potassium-40 15.6 +/-1.52 0.317 +/-1.52 0.719 pCi/g Radium-226 0.763 +/-0.151 0.0644 +/-0.151 0.138 pCi/g Silver- 108m U -0.00124 +/-0.0297 0.0258 +/-0.0297 0.0553 pCi/g Thallium-208 0.365 +/-0.0863 0.0282 +/-0.0863 0.0613 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 09/29/06 1557 574161 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 39

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-009F Project: YANK01204 Sample ID: 172879002 Client ID: YANK001 Vol. Recv.:

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

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

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

40

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-015F Project: YANKO 1204 Sample ID: 172879003 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 20-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 9.44%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamrna,Solid-FSSGAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.425 +/-0.132 0.0485 +/-0.132 0.105 pCi/g MJHI 10/10/06 0829 574337 1 Americium-241 U -0.0228 +/-0.0622 0.0525 +/-0.0622 0.109 pCi/g Bismuth-212 0.373 +/-0.228 0.107 +/-0.228 0.229 pCi/g Bismuth-214 0.389 +/-0.0646 0.0263 +/-0.0646 0.0558 pCi/g Cesium-134 U 0.0277 +/-0.0155 0.0172 +/-0.0155 0.0366 pCi/g Cesium-137 0.0693 +/-0.0318 0.0131 +/-0.0318 0.0281 pCi/g Cobalt-60 U 0.00618 +/-0.0146 0.0129 +/-0.0146 0.0287 pCi/g Europium-152 U 0.00611 +/-0.0416 0.0337 +/-0.0416 0.0714 pCi/g Europium-154 U 0.0538 +/-0.0515 0.048 +/-0.0515 0.104 pCi/g Europium-155 U 0.00977 +/-0.0484 0.0453 +/-0.0484 0.0942 pCi/g Lead-212 0.462 +/-0.0497 0.0221 +/-0.0497 0.0461 pCi/g Lead-214 0.384 +/-0.0646 0.0264 +/-0.0646 0.0557 pCi/g Manganese-54 U 0.00535 +/-0.0155 0.0141 +/-0.0155 0.0302 pCi/g Niobium-94 U 0.00853 +/-0.0141 0.0132 +/-0.0141 0.0281 pCi/g Potassium-40 11.6 +/-0.743 0.115 +/-0.743 0.257 pCi/g Radium-226 0.389 +/-0.0646 0.0263 +/-0.0646 0.0558 pCi/g Silver-108m U 0.0118 +/-0.0154 0.0121 +/-0.0154 0.0256 pCi/g Thallium-208 0.155 +/-0.0299 0.0141 +/-0.0299 0.030 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 09/29/06 1557 574161 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 41

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-015F Project: YANK01204 Sample ID: 172879003 ClientID: YANK001 Vol. Recv.:

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

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

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

42

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis v -- i Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-006F Project: YANK01204 Sample ID: 172879004 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 22-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 15.3%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.659 +/-0.153 0.0501 +/-0.153 0.109 pCi/g MJHI 10/10/06 0918 574337 1 Americium-241 U 0.00343 +/-0.0894 0.0812 +/-0.0894 0.168 pCi/g Bismuth-212 0.450 +/-0.236 0.111 +/-0.236 0.239 pCi/g Bismuth-214 0.443 +/-0.0698 0.0271 +/-0.0698 0.0581 pCi/g Cesium-134 UI 0.00 +/-0.0323 0.0211 +/-0.0323 0.0449 pCi/g Cesium-137 U 0.0091 +/-0.0227 0.0177 +/-0.0227 0.0376 pCi/g Cobalt-60 U -0.0183 +/-0.0193 0.0142 +/-0.0193 0.032 pCi/g Europium-152 U -0.0182 +/-0.0455 0.0383 +/-0.0455 0.081 pCi/g Europium-154 U -0.00358 +/-0.0587 0.0499 +/-0.0587 0.109 pCi/g Europium-155 U 0.0136 +/-0.0477 0.0464 +/-0.0477 0.0961 pCi/g Lead-212 0.611 +/-0.0511 0.0223 +/-0.0511 0.0465 pCi/g Lead-214 0.479 +/-0.0675 0.0318 +/-0.0675 0.0666 pCi/g Manganese-54 U 0.033 +/-0.0185 0.0156 +/-0.0185 0.0337 pCi/g Niobium-94 U 0.0152 +/-0.0167 0.0156 +/-0.0167 0.0331 pCi/g Potassium-40 12.0 +/-0.885 0.141 +/-0.885 0.317 pCi/g Radium-226 0.443 +/-0.0698 0.0271 +/-0.0698 0.0581 pCi/g Silver-108m U 0.000494 +/-0.0137 0.0125 +/-0.0137 0.0267 pCi/g Thallium-208 0.190 +/-0.0362 0.0146 +/-0.0362 0.0312 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 09/29/06 1557 574161 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 43

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-006F Project: YANK01204 Sample ID: 172879004 Client ID: YANKOO Vol. Recv.:

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

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

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

44

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-019F Project: YANK01204 Sample ID: 172879005 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 4.74%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.678 +/-0.133 0.0455 +/-0.133 0.0962 pCi/g MJH1 10/10/06 0918 574337 1 Americium-241 U 0.0404 +/-0.0963 0.0812 +/-0.0963 0.167 pCi/g Bismuth-212 0.475 +/-0.162 0.0882 +/-0.162 0.187 pCi/g Bismuth-214 0.704 +/-0.0724 0.025 +/-0.0724 0.0524 pCi/g Cesium- 134 UI 0.00 +/-0.0246 0.015 +/-0.0246 0.0315 pCi/g Cesium-137 U -0.00479 +/-0.0142 0.0118 +/-0.0142 0.025 pCi/g Cobalt-60 U -0.00361 +/-0.014 0.0119 +/-0.014 0.0258 pCi/g Europium-152 U -0.0378 +/-0.0372 0.0324 +/-0.0372 0.0676 pCi/g Europium- 154 U -0.0397 +/-0.0446 0.0361 +/-0.0446 0.0776 pCi/g Europium-155 U 0.0118 +/-0.0477 0.0458 +/-0.0477 0.0943 pCi/g Lead-212 0.648 +/-0.0463 0.022 +/-0.0463 0.0455 pCi/g Lead-214 0.819 +/-0.0648 0.0225 +/-0.0648 0.0471 pCi/g Manganese-54 U -0.00151 +/-0.0158 0.0138 +/-0.0158 0.029 pCi/g Niobium-94 U 0.0104 +/-0.013 0.0121 +/-0.013 0.0254 pCi/g Potassium-40 12.6 +/-0.679 0.115 +/-0.679 0.250 pCi/g Radium-226 0.704 +/-0.0724 0.025 +/-0.0724 0.0524 pCi/g Silver-108m U -0.00444 +/-0.012 0.0105 +/-0.012 0.022 pCi/g Thallium-208 0.185 +/-0.0295 0.0131 +/-0.0295 0.0274 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB 1 09/29/06 1557 574161 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 45

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-019F Project: YANK01204 Sample ID: 172879005 Client ID: YANKOO0 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MD1A Units DF Analyst Date Time Batch Mtd

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

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

46

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-017F Project: YANK01204 Sample ID: 172879006 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 5.61%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.821 +/-0.139 0.0439 +/-0.139 0.0947 pCi/g MJH1 10/10/06 1123 574337 1 Americium-241 U 0.0625 +/-0.0805 0.0752 +/-0.0805 0.155 pCi/g Bismuth-212 0.425 +/-0.218 0.0982 +/-0.218 0.210 pCi/g Bismuth-214 0.711 +/-0.0743 0.026 +/-0.0743 0.055 pCi/g Cesium- 134 Ul 0.00 +/-0.0231 0.0181 +/-0.0231 0.0382 pCi/g Cesium-137 0.0342 +/-0.0212 0.0142 +/-0.0212 0.0301 pCi/g Cobalt-60 U -0.0125 +/-0.0166 0.0128 +/-0.0166 0.0283 pCi/g Europium-152 U -0.0203 +/-0.0414 0.0348 +/-0.0414 0.0729 pCi/g Europium-154 U 0.043 +/-0.0567 0.0517 +/-0.0567 0.111 pCi/g Europium-155 U 0.00668 +/-0.0442 0.0427 +1-0.0442 0.0879 pCi/g Lead-212 0.741 +/-0.0518 0.0216 +/-0.0518 0.0447 pCi/g Lead-214 0.749 +/-0.0768 0.0268 +/-0.0768 0.056 pCi/g Manganese-54 U 0.0101 +/-0.0197 0.0154 +/-0.0197 0.0327 pCi/g Niobium-94 U 0.00877 +/-0.0221 0.0123 +/-0.0221 0.0261 pCi/g Potassium-40 11.9 +/-0.698 0.130 +/-0.698 0.286 pCi/g Radium-226 0.711 +/-0.0743 0.026 +/-0.0743 0.055 pCi/g Silver-108m U -0.00256 +/-0.0129 0.0116 +/-0.0129 0.0245 pCi/g Thallium-208 0.240 +/-0.0366 0.0147 +/-0.0366 0.0309 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 09/29/06 1557 574161 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 47

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-017F Proiect: YANK01204 Sample ID: 172879006 Client ID: YANK001 Vol. Recv.:

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

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

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

48

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-013F Project: YANK01204 Sample ID: 172879007 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 4.42%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Alpha Spec Analysis Alphaspec Am241, Cm, Solid ALL FSS Americium-241 U -0.0265 +/-0.0748 0.0785 +/-0.0748 0.241 pCi/g JAS1 10/12/06 1617 578044 1 Curium-242 U -0.016 +/-0.0222 0.0423 +/-0.0222 0.175 pCi/g Curium-243/244 U -0.14 +/-0.0925 0.133 +/-0.094 0.350 pCi/g Alphaspec Pu, Solid-ALL FSS Plutonium-238 U 0.119 +/-0.151 0.0733 +/-0.152 0.237 pCi/g JASI 10/12/06 1204 578046 3 Plutonium-239/240 U 0.0347 +/-0.0976 0.0599 +/-0.0977 0.210 pCi/g Liquid Scint Pu241, Solid-ALL FSS Plutonium-241 U 4.78 +/-8.24 6.71 +/-8.27 14.1 pCi/g JASI 10/10/06 1704 574558 5 Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.676 +/-0.159 0.0611 +/-0.159 0.134 pCi/g MJH1 10/10/06 1123 574337 7 Americium-241 U 0.0218 +/-0.0592 0.0553 +/-0.0592 0.115 pCi/g Bismuth-212 0.508 +/-0.241 0.123 +/-0.241 0.268 pCi/g Bismuth-214 0.531 +/-0.0926 0.029 +/-0.0926 0.0629 pCi/g Cesium-134 U 0.0219 +/-0.0285 0.0208 +/-0.0285 0.0449 pCi/g Cesium-137 U 0.00171 +/-0.0187 0.0167 +/-0.0187 0.0363 pCi/g Cobalt-60 U 0.00126 +/-0.028 0.0144 +/-0.028 0.0332 pCi/g Europium-152 U 0.0307 +/-0.0582 0.0395 +/-0.0582 0.0843 pCi/g Europium-154 U 0.0112 +/-0.0599 0.0533 +/-0.0599 0.118 pCi/g Europium-155 U 0.0549 +/-0.0527 0.0491 +/-0.0527 0.102 pCi/g Lead-212 0.643 +/-0.0753 0.0254 +/-0.0753 0.0533 pCi/g Lead-214 0.613 +/-0.0942 0.029 +/-0.0942 0.0619 pCi/g Manganese-54 U 0.0169 +/-0.0189 0.0179 +/-0.0189 0.0387 pCi/g Niobium-94 U 0.00931 +/-0.0164 0.0152 +/-0.0164 0.033 pCi/g Potassium-40 10.5 +/-1.08 0.133 +/-1.08 0.308 pCi/g Radium-226 0.531 +/-0.0926 0.029 +/-0.0926 0.0629 pCi/g Silver-108m Ul 0.00 +/-0.0254 0.0144 +/-0.0254 0.0309 pCi/g Thallium-208 0.206 +/-0.0458 0.0159 +/-0.0458 0.0344 pCi/g Rad Gas Flow Proportional Counting GFPC,Sr90, solid-ALL FSS Strontium-90 U -0.0 0219 +/-0.0162 0.0138 +/-0.0162 0.0297 pCi/g KSD1 10/04/06 2326 574221 8 Rad Liquid Scintillation Analysis LSC, Tritium Dist, Solid-HTD2,ALL FSS Tritium U 1.80 +/-7.41 6.10 +/-7.41 13.1 pCi/g MXP1 10/16/06 1907 579033 9 49

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-013F Project: YANKO1204 Sample ID: 172879007 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Liquid Scintillation Analysis Liquid Scint C14, Solid AllFSS Carbon-14 U -0.0255 +/-0.080 0.0682 +/-0.080 0.143 pCi/g AXD2 10/03/06 2210 574014 12 Liquid Scint Fe55,Solid-ALL FSS Iron-55 U -15.1 +/-30.9 22.3 +/-30.9 46.5 pCi/g MXP1 10/04/06 2038 574527 13 Liquid Scint Ni63, Solid-ALL FSS Nickel-63 U 9.42 +/-6.03 4.67 +/-6.04 9.79 pCi/g MXP1 10/06/06 1103 574530 14 Liquid Scint Tc99, Solid-ALL FSS Technetium-99 U 0.118 +/-0.255 0.210 +/-0.255 0.436 pCi/g KXRI 10/10/06 1045 574010 16 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 09/29/06 1557 574161 The following Analytical Methods were performed Method Description I DOE EML HASL-300, Am-05-RC Modified 2 DOE EML HASL-300, Am-05-RC Modified 3 DOE EML HASL-300, Pu- Il -RC Modified 4 DOE EML HASL-300, Pu- I -RC Modified 5 DOE EML HASL-300, Pu- Il -RC Modified 6 DOE EML HASL-300, Pu- lI -RC Modified 7 EML HASL 300, 4.5.2.3 8 EPA 905.0 Modified 9 EPA 906.0 Modified 10 EPA 906.0 Modified 11 EPA 906.0 Modified 12 EPA EERF C-01 Modified 13 DOE RESL Fe-1, Modified 14 DOE RESL Ni-1, Modified 15 DOE RESL Ni-1, Modified 16 DOE EML HASL-300, Tc-02-RC Modified 17 DOE EML HASL-300, Tc-02-RC Modified Surrogate/Tracer recovery Test Recovery% Acceptable Limits 50

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-013F Proiect: YANK01204 Sample ID: 172879007 Client ID: YANK001 Vol. Recv.:

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Surrogate/Tracer recovery Test Recovery % Acceptable Limits Americium-243 Alphaspec Am241, Cm, Solid ALL 96 (15%-125%)

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

Carrier/Tracer Recovery Liquid Scint Pu241, Solid-ALL F5 72 (25%-125%)

Carrier/Tracer Recovery GFPC, Sr90, solid-ALL FSS 82 (25%-125%)

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

Carrier/Tracer Recovery Liquid Scint Ni63, Solid-ALL FS 79 (25%-125%)

Carrier/Tracer Recovery Liquid Scint Tc99, Solid-ALL FS 71 (15%-125%)

Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported

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

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

51

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-016F Proiect: YANK01204 Sample ID: 172879008 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 7.06%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.820 +/-0.131 0.0527 +/-0.131 0.114 pCi/g MJHI 10/10/06 1124 574337 1 Americium-241 U -0.00717 +/-0.134 0.0951 +/-0.134 0.198 pCi/g Bismuth-212 0.643 +/-0.222 0.120 +/-0.222 0.256 pCi/g Bismuth-214 0.609 +/-0.0947 0.032 +/-0.0947 0.0676 pCi/g Cesium-134 U 0.0383 +/-0.0292 0.0183 +/-0.0292 0.039 pCi/g Cesium- 137 UI 0.00 +/-0.042 0.0147 +/-0.042 0.0316 pCi/g Cobalt-60 U 0.0141 +/-0.0107 0.015 +/-0.0107 0.0332 pCi/g Europium-152 U -0.0142 +/-0.0476 0.0426 +/-0.0476 0.0896 pCi/g Europium-154 U -0.0633 +/-0.0555 0.0425 +/-0.0555 0.0934 pCi/g Europium-155 U 0.0238 +/-0.0607 0.0583 +/-0.0607 0.121 pCi/g Lead-212 0.816 +/-0.0603 0.0259 +/-0.0603 0.0539 pCi/g Lead-214 0.679 +/-0.0832 0.0312 +/-0.0832 0.0656 pCi/g Manganese-54 U 0.0149 +/-0.0188 0.014 +/-0.0188 0.0302 pCi/g Niobium-94 U -0.00632 +/-0.0164 0.0142 +/-0.0164 0.0303 pCi/g Potassium-40 10.6 +/-0.722 0.128 +/-0.722 0.287 pCi/g Radium-226 0.609 +/-0.0947 0.032 +/-0.0947 0.0676 pCi/g Silver-108m U -0.00913 +/-0.0138 0.0116 +/-0.0138 0.0248 pCi/g Thallium-208 0.263 +/-0.0396 0.0157 +/-0.0396 0.0334 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 09/29/06 1557 574161 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 52

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-016F Project: YANK01204 Sample ID: 172879008 Vol. Recv.: YANKOOI Client ID:

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

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

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

53

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-014F Project: YANK01204 Sample ID: 172879009 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 4.55%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.680 +/-0.133 0.0509 +/-0.133 0.109 pCi/g MJHI 10/10/06 2057 574337 1 Americium-241 U -0.00676 +/-0.024 0.0229 +/-0.024 0.0468 pCi/g Bismuth-212 0.410 +/-0.241 0.114 +/-0.241 0.242 pCi/g Bismuth-214 0.699 +/-0.0831 0.0265 +/-0.0831 0.0562 pCi/g Cesium- 134 UI 0.00 +/-0.0293 0.0208 +/-0.0293 0.0438 pCi/g Cesium-137 U 0.0111 +/-0.0196 0.0157 +/-0.0196 0.0333 pCi/g Cobalt-60 U 0.00104 +/-0.0195 0.0167 +/-0.0195 0.0363 pCi/g Europium-152 U -0.0225 +/-0.0421 0.0376 +/-0.0421 0.0786 pCi/g Europium-154 U 0.0544 +/-0.0622 0.0573 +/-0.0622 0.122 pCi/g Europium-155 U 0.0483 +/-0.0411 0.0396 +/-0.0411 0.0813 pCi/g Lead-212 0.793 +/-0.0517 0.0219 +/-0.0517 0.0452 pCi/g Lead-214 0.683 +/-0.0744 0.0274 +/-0.0744 0.0573 pCi/g Manganese-54 U -0.00106 +/-0.019 0.016 +/-0.019 0.034 pCi/g Niobium-94 U 0.00614 +/-0.0179 0.0158 +/-0.0179 0.0332 pCi/g Potassium-40 13.4 +/-0.846 0.151 +/-0.846 0.331 pCi/g Radium-226 0.699 +/-0.0831 0.0265 +/-0.0831 0.0562 pCi/g Silver-108m U 0.000646 +/-0.0139 0.0126 +/-0.0139 0.0264 pCi/g Thallium-208 0.255 +/-0.0419 0.0148 +/-0.0419 0.0313 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 09/29/06 1557 574161 The following Analytical Methods were performed Method Description 1 EML HASL 300,4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 54

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-014F Proiect: YANKO 1204 Sample ID: 172879009 Client ID: YANKOO Vol. Recv.:

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

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

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

55

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-011F Proiect: YANK01204 Sample ID: 172879010 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 25-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 17.4%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.764 +/-0.270 0.101 +/-0.270 0.201 pCi/g MJH1 10/11/06 1006 574337 1 Americium-241 U -0.00199 +/-0.0494 0.0393 +/-0.0494 0.0786 pCi/g Bismuth-212 U 0.441 +/-0.420 0.252 +/-0.420 0.503 pCi/g Bismuth-214 0.652 +/-0.148 0.0585 +/-0.148 0.117 pCi/g Cesium-134 U 0.0318 +/-0.0406 0.0379 +/-0.0406 0.0757 pCi/g Cesium-137 U 0.016 +/-0.0322 0.0297 +/-0.0322 0.0594 pCi/g Cobalt-60 U 0.0078 +/-0.036 0.0311 +/-0.036 0.0623 pCi/g Europium-152 U 0.0333 +/-0.094 0.0702 +/-0.094 0.140 pCi/g Europium-154 U 0.126 +/-0.127 0.119 +/-0.127 0.239 pCi/g Europium-155 U 0.0903 +/-0.0956 0.0599 +/-0.0956 0.120 pCi/g Lead-212 0.863 +/-0.113 0.0361 +/-0.113 0.0722 pCi/g Lead-214 0.599 +/-0.121 0.0492 +/-0.121 0.0983 pCi/g Manganese-54 U -0.0261 +/-0.0364 0.0291 +/-0.0364 0.0582 pCi/g Niobium-94 U 0.00303 +/-0.0315 0.0279 +/-0.0315 0.0557 pCi/g Potassium-40 13.8 +/-1.41 0.296 +/-1.41 0.591 pCi/g Radium-226 0.652 +/-0.148 0.0585 +/-0.148 0.117 pCi/g Silver-108m U 0.00997 +/-0.0285 0.0254 +/-0.0285 0.0508 pCi/g Thallium-208 0.282 +/-0.0756 0.0281 +/-0.0756 0.0562 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB 1 09/29/06 1557 574161 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 56

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-011F Project: YANK01204 Sample ID: 172879010 ClientID: YANK001 Vol. Recv.:

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

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

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

57

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-005F Project: YANK01204 Sample ID: 172879011 Client ID: YANKOOl Matrix: TS Vol. Recv.:

Collect Date: 25-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 19.2%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.972 +/-0.187 0.0619 +/-0.187 0.133 pCi/g MJHI 10/11/06 1333 574337 1 Americium-241 U 0.028 +/-0.0957 0.0806 +/-0.0957 0.166 pCi/g Bismuth-212 0.605 +/-0.277 0.140 +/-0.277 0.299 pCi/g Bismuth-214 0.634 +/-0.0959 0.0328 +/-0.0959 0.0697 pCi/g Cesium-134 UI 0.00 +/-0.043 0.0255 +/-0.043 0.0537 pCi/g Cesium- 137 U 0.0211 +/-0.023 0.0183 +/-0.023 0.039 pCi/g Cobalt-60 U 0.00902 +/-0.0234 0.0206 +/-0.0234 0.045 pCi/g Europium-152 U -0.00325 +/-0.0588 0.0449 +/-0.0588 0.0943 pCi/g Europium-154 U 0.0995 +/-0.0875 0.0658 +/-0.0875 0.142 pCi/g Europium- 155 U 0.0465 +/-0.0604 0.0555 +/-0.0604 0.114 pCi/g Lead-212 0.880 +/-0.0678 0.0275 +/-0.0678 0.0571 pCi/g Lead-214 0.767 +/-0.0788 0.0331 +/-0.0788 0.0696 pCi/g Manganese-54 U 0.00518 +/-0.0268 0.0201 +/-0.0268 0.0428 pCi/g Niobium-94 U 0.0222 +/-0.0266 0.0181 +/-0.0266 0.0383 pCi/g Potassium-40 14.8 +/-1.00 0.159 +/- 1.00 0.356 pCi/g Radium-226 0.634 +/-0.0959 0.0328 +/-0.0959 0.0697 pCi/g Silver-108m U -0.00273 +/-0.0189 0.016 +/-0.0189 0.0338 pCi/g Thallium-208 0.311 +/-0.0421 0.0173 +/-0.0421 0.0367 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB 1 09/29/06 1557 574161 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 58

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-005F Proiect: YANK01204 Sample ID: 172879011 Client ID: YANKOO Vol. Recv.:

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

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

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

59

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-018F Project: YANK01204 Sample ID: 172879012 Client ID: YANKOO Matrix: TS Vol. Recv.:

Collect Date: 19-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 5.27%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.675 +/-0.161 0.0523 +/-0.161 0.114 pCi/g MJH1 10/11/06 1333 574337 1 Americium-241 U 0.00915 +/-0.129 0.093 +/-0.129 0.193 pCi/g Bismuth-212 0.389 +/-0.257 0.141 +/-0.257 0.299 pCi/g Bismuth-214 0.608 +/-0.0793 0.0283 +/-0.0793 0.0603 pCi/g Cesium- 134 U 0.0374 +/-0.0255 0.0204 +/-0.0255 0.0435 pCi/g Cesium-137 U 0.0257 +/-0.0249 0.0159 +/-0.0249 0.034 pCi/g Cobalt-60 U -0.005 +/-0.0183 0.015 +/-0.0183 0.0334 pCi/g Europium-152 U 0.0349 +/-0.0485 0.0438 +/-0.0485 0.0918 pCi/g Europium-154 U 0.0137 +/-0.0569 0.0499 +/-0.0569 0.109 pCi/g Europium-155 U 0.00511 +/-0.0504 0.0482 +/-0.0504 0.0999 pCi/g Lead-212 0.691 +/-0.0551 0.0244 +/-0.0551 0.0508 pCi/g Lead-214 0.719 +/-0.0882 0.029 +/-0.0882 0.0611 pCi/g Manganese-54 U -0.00268 +/-0.0196 0.0164 +/-0.0196 0.0352 pCi/g Niobium-94 U -0.00705 +/-0.0168 0.014 +/-0.0168 0.0299 pCi/g Potassium-40 10.3 +/-0.785 0.141 +/-0.785 0.317 pCi/g Radium-226 0.608 +/-0.0793 0.0283 +/-0.0793 0.0603 pCi/g Silver-108m U 0.00471 +/-0.0156 0.0144 +/-0.0156 0.0305 pCi/g Thallium-208 0.231 +/-0.0377 0.015 +/-0.0377 0.0321 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 09/29/06 1602 574169 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 60

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-018F Project: YANK01204 Sample ID: 172879012 ClientID: YANK001 Vol. Recv.:

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

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

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

61

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-020F Project: YANK01204 Sample ID: 172879013 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 19-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 19.2%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.927 +/-0.163 0.0598 +/-0.163 0.130 pCi/g MJH1 10/11/06 1335 574337 1 Americium-241 U 0.00879 +/-0.094 0.0839 +/-0.094 0.173 pCi/g Bismuth-212 0.753 +/-0.282 0.133 +/-0.282 0.288 pCi/g Bismuth-214 0.605 +/-0.104 0.0347 +/-0.104 0.074 pCi/g Cesium- 134 U 0.0521 +/-0.0484 0.0254 +/-0.0484 0.0538 pCilg Cesium-137 U 0.0289 +/-0.0249 0.0167 +/-0.0249 0.0361 pCi/g Cobalt-60 U 0.00547 +/-0.0209 0.0186 +/-0.0209 0.0414 pCi/g Europium- 152 U -0.0225 +/-0.0558 0.0471 +/-0.0558 0.0992 pCi/g Europium- 154 U -0.0587 +/-0.065 0.0501 +/-0.065 0.112 pCi/g Europium- 155 UI 0.00 +/-0.0995 0.0505 +/-0.0995 0.105 pCi/g Lead-212 0.846 +/-0.0702 0.0305 +/-0.0702 0.0633 pCi/g Lead-214 0.810 +/-0.109 0.0342 +/-0.109 0.072 pCi/g Manganese-54 U 0.0011 +/-0.0222 0.0191 +/-0.0222 0.041 pCi/g Niobium-94 U 0.0159 +/-0.0199 0.0184 +/-0.0199 0.0391 pCi/g Potassium-40 12.7 +/-0.982 0.160 +/-0.982 0.363 pCi/g Radium-226 0.605 +/-0.104 0.0347 +/-0.104 0.074 pCi/g Silver-108m U 0.00352 +/-0.0187 0.0161 +/-0.0187 0.0342 pCi/g Thallium-208 0.254 +/-0.0476 0.018 +/-0.0476 0.0385 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB 1 09/29/06 1602 574169 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows

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

< Result is less than value reported 62

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-020F Project: YANK01204 Sample ID: 172879013 ClientID: YANK001 Vol. Recv.:

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

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

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

63

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-01OF Project: YANK01204 Sample ID: 172879014 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 19-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 13.9%

Parameter Qualifier Result Uncertainty LC TPU MIDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.675 +/-0.128 0.0562 +/-0.128 0.121 pCi/g MJH1 10/11/06 1336 574337 1 Americium-241 U -0.118 +/-0.0795 0.0725 +/-0.0795 0.149 pCilg Bismuth-212 0.519 +/-0.173 0.118 +/-0.173 0.254 pCi/g Bismuth-214 0.421 +/-0.071 0.030 +/-0.071 0.0638 pCi/g Cesium-134 U 0.0313 +/-0.022 0.0212 +/-0.022 0.0449 pCi/g Cesium-137 0.0513 +/-0.0384 0.0151 +/-0.0384 0.0323 pCi/g Cobalt-60 U 0.0162 +/-0.0266 0.0197 +/-0.0266 0.0427 pCi/g Europium-152 U -0.0172 +/-0.0606 0.0451 +/-0.0606 0.0943 pCi/g Europium- 154 U 0.0504 +/-0.0443 0.0567 +/-0.0443 0.123 pCi/g Europium-155 U 0.087 +/-0.0697 0.0545 +/-0.0697 0.112 pCi/g Lead-212 0.594 +/-0.0528 0.0285 +/-0.0528 0.0589 pCi/g Lead-214 0.495 +/-0.0642 0.0312 +/-0.0642 0.0655 pCi/g Manganese-54 U 0.000893 +/-0.0192 0.0166 +/-0.0192 0.0356 pCi/g Niobium-94 U -0.0186 +/-0.0161 0.0127 +/-0.0161 pCi/g 0.0274 Potassium-40 12.3 +/-0.813 +/-0.813 pCi/g 0.123 0.281 Radium-226 0.421 +/-0.071 0.030 +/-0.071 pCi/g 0.0638 Silver-108m U 0.00313 +/-0.0169 0.0147 +/-0.0169 0.031 pCi/g Thallium-208 0.224 +/-0.0356 +/-0.0356 0.0348 pCi/g 0.0164 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 09/29/06 1602 574169 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 64

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-010F Project: YANK01204 Sample ID: 172879014 ClientID: YANK001 Vol. Recv.:

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

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

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

65

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-001F Project: YANK01204 Sample ID: 172879015 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 19-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 20.2%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.692 +/-0.204 0.0744 +/-0.204 0.159 pCi/g MJH1 10/11/06 1336 574337 1 Americium-241 U 0.0166 +/-0.032 0.0296 +/-0.032 0.0608 pCi/g Bismuth-212 0.502 +/-0.277 0.159 +/-0.277 0.338 pCi/g Bismuth-214 0.516 +/-0.103 0.0373 +/-0.103 0.0789 pCi/g Cesium-134 UI 0.00 +/-0.0626 0.0273 +/-0.0626 0.0575 pCi/g Cesium-137 U 0.0131 +/-0.0279 0.0221 +/-0.0279 0.0468 pCi/g Cobalt-60 U 0.00492 +/-0.0283 0.0242 +/-0.0283 0.0522 pCi/g Europium-152 U 0.0391 +/-0.0628 0.056 +/-0.0628 0.117 pCi/g Europium-154 U -0.0141 +/-0.0847 0.0707 +/-0.0847 0.152 pCi/g Europium-155 U 0.0213 +/-0.0521 0.046 +/-0.0521 0.095 pCi/g Lead-212 0.633 +/-0.0699 0.0389 +/-0.0699 0.0799 pCi/g Lead-214 0.520 +/-0.0857 0.0383 +/-0.0857 0.0799 pCi/g Manganese-54 U -0.0245 +/-0.0269 0.021 +/-0.0269 0.0447 pCi/g Niobium-94 U -0.027 +/-0.0223 0.0174 +/-0.0223 0.0371 pCi/g Potassium-40 11.5 +/-0.917 0.168 +/-0.917 0.373 pCi/g Radium-226 0.516 +/-0.103 0.0373 +/-0.103 0.0789 pCi/g Silver-108m U 0.00845 +/-0.020 0.0185 +/-0.020 0.0388 pCi/g Thallium-208 0.207 +/-0.053 0.0214 +/-0.053 0.0452 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 09/29/06 1602 574169 The following Analytical Methods were performed Method Description 1 EML HASL 300,4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 66

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-00IF Project: YANK01204 Sample ID: 172879015 Client ID: YANK001 Vol. Recv.:

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

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

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

67

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-001FS Proiect: YANK01204 Sample ID: 172879016 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 19-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 26.8%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.802 +/-0.186 0.0656 +/-0.186 0.142 pCi/g MJH1 10/11/06 1336 574337 1 Americium-241 U -0.0082 +/-0.0284 0.0221 +/-0.0284 0.0458 pCi/g Bismuth-212 0.622 +/-0.233 0.128 +/-0.233 0.277 pCi/g Bismuth-214 0.530 +/-0.105 0.0328 +/-0.105 0.0701 pCi/g Cesium-134 U 0.0439 +/-0.0252 0.0242 +/-0.0252 0.0515 pCi/g Cesium-137 U 0.0148 +/-0.0215 0.0193 +/-0.0215 0.0412 pCi/g Cobalt-60 U 0.00173 +/-0.0283 0.0178 +/-0.0283 0.0399 pCi/g Europium-152 U 0.000274 +/-0.051 0.0426 +/-0.051 0.090 pCi/g Europium- 154 U -0.028 +/-0.0698 0.0555 +/-0.0698 0.123 pCi/g Europium-155 UT 0.00 +/-0.0539 0.0335 +/-0.0539 0.0699 pCi/g Lead-212 0.710 +/-0.0581 0.0245 +/-0.0581 0.0512 pCi/g Lead-214 0.584 +/-0.0833 0.0315 +/-0.0833 0.0665 pCi/g Manganese-54 U 0.00129 +/-0.0232 0.0193 +/-0.0232 0.0415 pCi/g Niobium-94 U -0.0123 +/-0.0188 0.0148 +/-0.0188 0.032 pCi/g Potassium-40 12.2 +/-1.01 0.148 +/-1.01 0.339 pCi/g Radium-226 0.530 +/-0.105 0.0328 +/-0.105 0.0701 .pCi/g Silver-108m U -0.00463 +/-0.0169 0.0146 +/-0.0169 0.0311 pCi/g Thallium-208 0.217 +/-0.0489 0.018 +/-0.0489 0.0384 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 09/29/06 1602 574169 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 68

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-OOIFS Project: YANK01204 Sample ID: 172879016 Client ID: YANK001 Vol. Recv.:

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

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

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

69

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-004F Project: YANK01204 Sample ID: 172879017 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 22-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 17.2%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.668 +/-0.171 0.0769 +/-0.171 0.166 pCi/g MJHI 10/11/06 1337 574337 1 Americium-241 U 0.00666 +/-0.0316 0.0305 +/-0.0316 0.0628 pCi/g Bismuth-212 0.397 +/-0.247 0.164 +/-0.247 0.351 pCi/g Bismuth-214 0.537 +/-0.0936 0.0393 +/-0.0936 0.0837 pCi/g Cesium- 134 U 0.0309 +/-0.0272 0.0255 +/-0.0272 0.0544 pCi/g Cesium-137 U 0.0268 +/-0.0329 0.0218 +/-0.0329 0.0464 pCi/g Cobalt-60 U 0.00151 +/-0.0228 0.0196 +/-0.0228 0.0437 pCi/g Europium- 152 U 0.0542 +/-0.0576 0.0552 +/-0.0576 0.116 pCi/g Europium-154 U -0.0329 +/-0.0729 0.0587 +/-0.0729 0.130 pCi/g Europium-155 U 0.0641 +/-0.0785 0.0449 +/-0.0785 0.0931 pCi/g Lead-212 0.710 +/-0.0588 0.0266 +/-0.0588 0.0555 pCi/g Lead-214 0.514 +/-0.0902 0.0359 +/-0.0902 0.0755 pCi/g Manganese-54 U 0.00638 +/-0.0263 0.0226 +/-0.0263 0.0485 pCi/g Niobium-94 U 0.0167 +/-0.0216 0.0197 +/-0.0216 0.042 pCi/g Potassium-40 12.1 +/-0.943 0.182 +/-0.943 0.411 pCi/g Radium-226 0.537 +/-0.0936 0.0393 +/-0.0936 0.0837 pCi/g Silver-108m U 0.00385 +/-0.0201 0.0162 +/-0.0201 0.0344 pCi/g Thallium-208 0.236 +/-0.0527 0.0204 +/-0.0527 0.0435 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB 1 09/29/06 1602 574169 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 70

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-004F Proiect: YANK01204 Sample ID: 172879017 Client ID: YANK001 Vol. Recv.:

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

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

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

71

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-004FS Project: YANK01204 Sample ID: 172879018 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 22-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 16.2%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.661 +/-0.167 0.061 +/-0.167 0.122 pCi/g MJH1 10/11/06 1352 574337 1 Americium-241 U 0.00826 +/-0.0821 0.0677 +/-0.0821 0.135 pCi/g Bismuth-212 0.474 +/-0.289 0.135 +/-0.289 0.271 pCi/g Bismuth-214 0.470 +/-0.0825 0.0312 +/-0.0825 0.0623 pCi/g Cesium-134 UI 0.00 +/-0.0294 0.0212 +/-0.0294 0.0424 pCi/g Cesium-137 U 0.00926 +/-0.0219 0.0193 +/-0.0219 0.0386 pCi/g Cobalt-60 U 0.0012 +/-0.0204 0.0174 +/-0.0204 0.0348 pCi/g Europium-152 U -0.00386 +/-0.0614 0.045 +/-0.0614 0.090 pCi/g Europium-154 U 0.058 +/-0.0721 0.0653 +/-0.0721 0.131 pCi/g Europium-155 U 0.060 +/-0.0558 0.0527 +/-0.0558 0.105 pCi/g Lead-212 0.744 +/-0.0838 0.0254 +/-0.0838 0.0508 pCi/g Lead-214 0.503 +/-0.0831 0.0346 +/-0.0831 0.0692 pCi/g Manganese-54 U -0.00841 +/-0.0191 0.0162 +/-0.0191 0.0325 pCi/g Niobium-94 U -0.00327 +/-0.018 0.0151 +/-0.018 0.0303 pCi/g Potassium-40 12.2 +/-1.06 0.150 +/-1.06 0.301 pCi/g Radium-226 0.470 +/-0.0825 0.0312 +/-0.0825 0.0623 pCi/g Silver-108m U 0.00155 +/-0.0164 0.0146 +/-0.0164 0.0292 pCi/g Thallium-208 0.241 +/-0.0458 0.0162 +/-0.0458 0.0324 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 09/29/06 1602 574169 The following Analytical Methods were performed Method Description I EML HASL 300,4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 72

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-004FS Project: YANKO 1204 Sample ID: 172879018 Client ID: YANKOOl Vol. Recv.:

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

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

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

73

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-002F Proiect: YANK01204 Sample ID: 172879019 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 22-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 19.4%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 1.01 +/-0.269 0.0821 +/-0.269 0.164 pCi/g MJH1 10/11/06 1353 574337 1 Americium-241 U 0.0107 +/-0.0408 0.0331 +/-0.0408 0.0661 pCi/g Bismuth-212 U1 0.00 +/-0.520 0.191 +/-0.520 0.382 pCi/g Bismuth-214 0.692 +/-0.133 0.0435 +/-0.133 0.0869 pCi/g Cesium-134 UI 0.00 +/-0.0574 0.0329 +/-0.0574 0.0658 pCi/g Cesium-137 U 0.0164 +/-0.0289 0.0265 +/-0.0289 0.0529 pCi/g Cobalt-60 U -0.00935 +/-0.0298 0.0238 +/-0.0298 0.0476 pCi/g Europium-152 U -0.0633 +/-0.116 0.054 +/-0.116 0.108 pCi/g Europium-154 U -0.0142 +/-0.0988 0.0816 +/-0.0988 0.163 pCi/g Europium- 155 U 0.0744 +/-0.0684 0.0524 +/-0.0684 0.105 pCi/g Lead-212 0.845 +/-0.0997 0.0321 +/-0.0997 0.0642 pCi/g Lead-214 0.747 +/-0.134 0.0402 +/-0.134 0.0803 pCi/g Manganese-54 U 0.00497 +/-0.0305 0.0268 +/-0.0305 0.0536 pCi/g Niobium-94 U 0.0118 +/-0.0263 0.0238 +/-0.0263 0.0476 pCi/g Potassium-40 13.7 +/-1.19 0.206 +/-1.19 0.412 pCi/g Radium-226 0.692 +/-0.133 0.0435 +/-0.133 0.0869 pCi/g Silver-108m U -0.00492 +/-0.0233 0.020 +/-0.0233 0.040 pCi/g Thallium-208 0.281 +/-0.055 0.0235 +/-0.055 0.0471 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMBI 09/29/06 1602 574169 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 74

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-002F Proiect: YANK01204 Sample ID: 172879019 Client ID: YANKOOl Vol. Recv.:

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

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

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

75

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-003F Proiect: YANK01204 Sample ID: 172879020 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 22-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 11.6%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.688 +/-0.157 0.0551 +/-0.157 0.118 pCi/g MJH1 10/11/06 1649 574337 1 Americium-241 U -0.044 +/-0.0512 0.0445 +/-0.0512 0.0921 pCi/g Bismuth-212 0.781 +/-0.239 0.105 +/-0.239 0.225 pCi/g Bismuth-214 0.569 +/-0.0879 0.0273 +/-0.0879 0.0579 pCi/g Cesium- 134 UI 0.00 +/-0.0266 0.0183 +/-0.0266 0.039 pCi/g Cesium- 137 0.0883 +/-0.0237 0.0147 +/-0.0237 0.0313 pCi/g Cobalt-60 U 0.0184 +/-0.032 0.0142 +/-0.032 0.0314 pCi/g Europium-152 U -0.0081 +/-0.0415' 0.0359 +/-0.0415 0.0755 pCi/g Europium- 154 U 0.0687 +/-0.0855 0.0471 +/-0.0855 0.102 pCi/g Europium-155 U 0.0446 +/-0.0438 0.040 +/-0.0438 0.0827 pCi/g Lead-212 0.734 +/-0.0753 0.0207 +/-0.0753 0.0432 pCi/g Lead-214 0.626 +/-0.0908 0.0275 +/-0.0908 0.0577 pCi/g Manganese-54 U 0.020 +/-0.0166 0.0157 +/-0.0166 0.0334 pCi/g Niobium-94 U 0.00615 +/-0.0143 0.0129 +/-0.0143 0.0276 pCi/g Potassium-40 11.9 +/-1.05 0.135 +/-1.05 0.300 pCi/g Radium-226 0.569 +/-0.0879. 0.0273 +/-0.0879 0.0579 pCi/g Silver-108m U 0.00657 +/-0.0146 0.0129 +/-0.0146 0.0272 pCi/g Thallium-208 0.223 +/-0.0352 0.0148 +/-0.0352 0.0314 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB1 09/29/06 1602 574169 The following Analytical Methods were performed Method Description I EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 76

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-003F Project: YANK01204 Sample ID: 172879020 Client ID: YANKOOI Vol. Recv.:

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

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

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

77

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-012F Project: YANK01204 Sample ID: 172879021 Client ID: YANK00I Matrix: TS Vol. Recv.:

Collect Date: 22-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 17.3%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.524 +/-0.120 0.0374 +/-0.120 0.080 pCi/g MJHI 10/03/06 0521 574336 1 Americium-241 U -0.0192 +/-0.0546 0.046 +/-0.0546 0.095 pCi/g Bismuth-212 0.373 +/-0.203 0.0837 +/-0.203 0.178 pCi/g Bismuth-214 0.370 +/-0.0507 0.021 +/-0.0507 0.0442 pCi/g Cesium- 134 U 0.0307 +/-0.024 0.0147 +/-0.024 0.0309 pCi/g Cesium-137 U 0.0104 +/-0.0309 0.0122 +/-0.0309 0.0258 pCi/g Cobalt-60 U -0.00272 +/-0.0167 0.0117 +/-0.0167 0.0254 pCi/g Europium-152 U 0.00769 +/-0.0367 0.0296 +/-0.0367 0.0619 pCi/g Europium-154 U -0.0169 +/-0.0441 0.0357 +/-0.0441 0.0766 pCi/g Europium-155 U 0.0194 +/-0.0407 0.0381 +/-0.0407 0.0787 pCi/g Lead-212 0.520 +/-0.0418 0.0182 +/-0.0418 0.0377 pCi/g Lead-214 0.466 +/-0.0573 0.0216 +/-0.0573 0.0451 pCi/g Manganese-54 U -0.00134 +/-0.0134 0.0117 +/-0.0134 0.0247 pCi/g Niobium-94 U 0.000852 +/-0.0121 0.0108 +/-0.0121 0.0228 pCi/g Potassium-40 11.6 +/-0.634 0.0975 +/-0.634 0.214 pCi/g Radium-226 0.370 +/-0.0507 0.021 +/-0.0507 0.0442 pCi/g Silver-108m U 0.000312 +/-0.0114 0.0101 +/-0.0114 0.0212 pCi/g Thallium-208 0.159 +/-0.0291 0.0103 +/-0.0291 0.0218 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB 1 09/29/06 1602 574169 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3.

Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 78

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-012F Project: YANK01204 Sample ID: 172879021 Client ID: YANKOO Vol. Recv.:

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

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

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

79

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address : 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-007F Proiect: YANKO01204 Sample ID: 172879022 Client ID: YANK001 Matrix: TS Vol. Recv.:

Collect Date: 22-SEP-06 Receive Date: 29-SEP-06 Collector: Client Moisture: 18.2%

Parameter Qualifier Result Uncertainty LC TPU MDA Units DF Analyst Date Time Batch Mtd Rad Gamma Spec Analysis Gamma,Solid-FSS GAM & ALL FSS 226 Ingrowth Waived Actinium-228 0.691 +/-0.164 0.0461 +/-0.164 0.101 pCi/g MJH1 10/03/06 0612 574336 1 Americium-241 U -0.014 +/-0.117 0.095 +/-0.117 0.197 pCi/g Bismuth-212 0.664 +/-0.222 0.110 +/-0.222 0.237 pCi/g Bismuth-214 0.474 +/-0.0733 0.0258 +/-0.0733 0.0554 pCi/g Cesium- 134 U 0.024 +/-0.0284 0.0201 +/-0.0284 0.0428 pCi/g Cesium- 137 U -0.00424 +/-0.0197 0.0145 +/-0.0197 0.0313 pCi/g Cobalt-60 U 0.00516 +/-0.0167 0.0148 +/-0.0167 0.0332 pCi/g Europium- 152 U -0.0196 +/-0.049 0.041 +/-0.049 0.0862 pCi/g Europium- 154 U 0.0129 +/-0.0552 0.0484 +/-0.0552 0.106 pCi/g Europium-155 U 0.0461 +/-0.0501 0.0494 +/-0.0501 0.102 pCi/g Lead-212 0.568 +/-0.0534 0.024 +/-0.0534 0.050 pCi/g Lead-214 0.466 +/-0.0687 0.0298 +/-0.0687 0.0628 pCi/g Manganese-54 U 0.00691 +/-0.0181 0.0159 +/-0.0181 0.0342 pCi/g Niobium-94 U -0.00744 +/-0.0158 0.0131 +/-0.0158 0.0281 pCi/g Potassium-40 11.8 +/-0.870 0.148 +/-0.870 0.332 pCi/g Radium-226 0.474 +/-0.0733 0.0258 +/-0.0733 0.0554 pCi/g Silver- 108m U -0.0184 +/-0.0144 0.0118 +/-0.0144 0.0253 pCi/g Thallium-208 0.193 +/-0.0384 0.0146 +/-0.0384 0.0313 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 JMB 1 09/29/06 1602 574169 The following Analytical Methods were performed Method Description 1 EML HASL 300, 4.5.2.3 Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported 80

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company: Connecticut Yankee Atomic Power Address: 362 Injun Hollow Rd East Hampton, Connecticut 06424 Report Date: October 18, 2006

Contact:

Mr. Jack McCarthy Project: Soils PO# 002332 Client Sample ID: 9805-0000-007F Project: YANK01204 Sample ID: 172879022 Client ID: YANK001 Vol. Recv.:

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

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

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

81

.I QUALITY CONTROL DATA 82

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Revort Date: October 18, 2006 Client : Connecticut Yankee Atomic Power Page I of 12 362 Injun Hollow Rd East Hampton, Connecticut

Contact:

Mr. Jack McCarthy Workorder: 172879 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Alpha Spec Batch 574558 QC1201197067 172879001 DUP Plutonium-241 U 2.68 U 3.67 pCi/g 0 (0%- 100%) JASI 10/10/06 17:36 Uncert: +/-7.20 +/-9.16 TPU: +/-7.20 +/-9.17 QC1201197069 LCS Plutonium-241 123 107 pCi/g 87 (75%-125%) 10/10/06 18:09 Uncert: +/-12.0 TPU: +/-18.6 QC1201197066 MB Plutonium-241 U 3.56 pCi/g 10/10/06 17:20 Uncert: +/-7.43 TPU: +/-7.44 QC1201197068 172879001 MS Plutonium-241 144 U 2.68 127 pCilg 89 (75%-125%) 10/10/06 17:53 Uncert: +/-7.20 +/-16.3 TPU: +/-7.20 +/-23.9 Batch 578044 QC1201204516 172879001 DUP Americium-241 U -0.0902 U -0.0331 pCi/g 93 (0%- 100%) JASI 10/12/06 16:17 Uncert: +/-0.120 +/-0.101 TPU: +/-0.121 +/-0.101 Curium-242 U -0.143 U -0.00812 pCi/g 179 (0%- 100%)

Uncert: +/-0.0702 +/-0.0159 TPU: +/-0.0724 +/-0.0159 Curium-243/244 U -0.0746 U -0.163 pCi/g 74 (0%- 100%)

Uncert: +/-0.172 +/-0.178 TPU: +/-0.173 +/-0.179 QC1201204518 LCS Americium-241 12.3 13.0 pCi/g 106 (75%-125%)

Uncert: +/-1.24 TPU: +/-2.01 Curium-242 U 0.00 pCi/g Uncert: +/-0.0599 TPU: +/-0.0599 Curium-243/244 14.8 16.6 pCi/g 112 (75%-125%)

Uncert: +/-1.40 TPU: +/-2.46 QC1201204515 MB Americium-241 U 0.00339 pCi/g Uncert: +/-0.118 TPU: +/-0.118 Curium-242 U 0.00 pCi/g Uncert: +/-0.0711 TPU: +/-0.0711 83

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 2 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Alpha Spec Batch 578044 Curium-243/244 U -0.164 pCi/g Uncert: +/-0.0739 TPU: +/-0.0767 QC1201204517 172879001 MS Americium-241 13.5 U -0.0902 12.8 pCi/g 95 (75%-125%)

Uncert: +/-0.120 +/-1.31 TPU: +/-0.121 +/-2.05 Curium-242 U -0.143 U -0.0368 pCi/g Uncert: +/-0.0702 +/-0.0361 TPU: +/-0.0724 +/-0.0364 Curium-243/244 16.3 U -0.0746 17.7 PCi/g 109 (75%-125%)

Uncert: +/-0.172 +/-1.55 TPU: +/-0.173 +/-2.68 Batch 578046 QC1201204520 172879001 DUP Plutonium-238 u -0.0161 U 0.0223 pCi/g 1240 (0%- 100%) JAS1 10/12/06 12:04 Uncert: +/-0.127 +/-0.150 TPU: +/-0.127 +/-0.150 Plutonium-239/240 U 0.047 U 0.00278 pCi/g 178 (0% - 100%)

Uncert: +/-0.135 +/-0.107 TPU: +/-0.135 +/-0.107 QC1201204522 LCS Plutonium-238 U 0.0311 pCi/g (75%-125%)

Uncert: +/-0.128 TPU: +/-0.128 Plutonium-239/240 11.4 10.3 pCi/g 90 (75%-125%)

Uncert: +/-1.03 TPU: +/-1.46 QC1201204519 MB Plutonium-238 U -0.0384 pCi/g Uncert: +/-0.0799 TPU: +/-0.080 Plutonium-239/240 U -0.0317 pCi/g Uncert: +/-0.0719 TPU: +/-0.0719 QC1201204521 172879001 MS Plutonium-238 U -0.0161 U -0.0462 pCi/g (75%-125%)

Uncert: +/-0.127 +/-0.0811 TPU: +/-0.127 +/-0.0813 Plutonium-239/240 12.5 U 0.047 11.6 pCi/g 93 (75%-125%)

Uncert: +/-0.135 +/-1.21 TPU: +/-0.135 +/-1.71 Rad Gamma Spec Batch 574336 QC1201196540 172275028 DUP Actinium-228 0.575 0.630 pCi/g 9 (0% - 100%) MJH1 10/03/06 06:14 Uncert: +/-0.137 +/-0.144 TPU: +/-0.137 +/-0.144 84

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 3 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range AnIst Date Time Rad Gamma Spec Batch 574336 Americium-241 U -0.000377 U -0.000296 pCi/g 24 (0% - 100%)

Uncert: +/-0.0553 +/-0.0229 TPU: +/-0.0553 +/-0.0229 Bismuth-212 0.487 0.548 pCilg 12 (0%- 100%)

Uncert: +/-0.229 +/-0.181 TPU: +/-0.229 +/-0.181 Bismuth-214 0.606 0.535 pCi/g 12 (0% - 100%)

Uncert: +/-0.0922 +/-0.0773 TPU: +/-0.0922 +/-0.0773 Cesium- 134 u 0.027 UI 0.00 pCilg 72 (0% - 100%)

Uncert: +/-0.0188 +/-0.0445 TPU: +/-0.0188 +/-0.0445 Cesium- 137 3.50 U 0.0209 pCi/g 198* (0%-20%)

Uncert: +/-0.317 +/-0.0312 TPU: +/-0.317 +/-0.0312 Cobalt-60 0.089 U 0.00347 pCi/g 185 (0%- 100%)

Uncert: +/-0.0294 +/-0.0186 TPU: +/-0.0294 +/-0.0186 Europium- 152 u -0.0197 U -0.00689 pCi/g 96 (0%- 100%)

Uncert: +/-0.049 +/-0.0417 TPU: +/-0.049 +/-0.0417 Europium- 154 u -0.0211 U 0.081 pCilg 341 (0%- 100%)

Uncert: +/-0.0462 +/-0.109 TPU: +/-0.0462 +/-0.109 Europium- 155 U 0.0382 U 0.0429 12 (0%- 100%)

pCi/g Uncert: +/-0.0686 +/-0.047 TPU: +/-0.0686 +/-0.047 Lead-212 0.583 0.738 pCi/g 23* (0% - 20%)

Uncert: +/-0.066 +/-0.0492 TPU: +/-0.066 +/-0.0492 Lead-214 0.695 0.589 pCi/g 17 (0% - 20%)

Uncert: +/-0.107 +/-0.0747 TPU: +/-0.107 +/-0.0747 Manganese-54 u 0.0169 U 0.0287 pCi/g 52 (0%- 100%)

Uncert: +/-0.0161 +/-0.0174 TPU: +/-0.0161 +/-0.0174 Niobium-94 U -0.00138 U 0.0073 pCi/g 293 (0%- 100%)

Uncert: +/-0.0123 +/-0.0179 TPU: +/-0.0123 +/-0.0179 Potassium-40 9.02 12.2 pCi/g 30* (0%- 20%)

Uncert: +/-0.922 +/-0.876 TPU: +/-0.922 +/-0.876 Radium-226 0.606 0.535 pCi/g 12 (0%- 100%)

Uncert: +/-0.0922 +/-0.0773 TPU: +/-0.0922 +/-0.0773 Silver- 108m U -0.0159 U 0.0066 pCi/g 483 (0%- 100%)

Uncert: +/-0.0205 +/-0.014 TPU: +/-0.0205 +/-0.014 85

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 4 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 574336 Thallium-208 0.186 0.254 pCi/g 31 (0%- 100%)

Uncert: +/-0.0436 +/-0.0405 TPU: +/-0.0436 +/-0.0405 QC1201196541 LCS Actinium-228 U -0.000391 pCi/g 10/03/06 07:26 Uncert: +/-0.575 TPU: +/-0.575 Americium-241 23.4 25.5 pCi/g 109 (75%-125%)

Uncert: +/-2.52 TPU: +/-2.52 Bismuth-212 U -0.528 pCi/g Uncert: +/-0.989 TPU: +/-0.989 Bismuth-214 U 0.0129 pCi/g Uncert: +/-0.236 TPU: +/-0.236 Cesium- 134 U -0.0169 pCi/g Uncert: +/-0.145 TPU: +/-0.145 Cesium- 137 9.56 10.1 pCi/g 106 (75%-125%)

Uncert: +/-0.768 TPU: +/-0.768 Cobalt-60 14.3 14.6 pCi/g 102 (75%-125%)

Uncert: +/-1.01 TPU: +/-1.01 Europium- 152 U -0.00861 pCi/g Uncert: +/-0.305 TPU: +/-0.305 Europium- 154 U 0.382 pCi/g Uncert: +/-0.275 TPU: +/-0.275 Europium- 155 U -0.0392 pCi/g Uncert: +/-0.332 TPU: +/-0.332 Lead-212 U -0.11 pCi/g Uncert: +/-0.163 TPU: +/-0.163 Lead-214 U 0.185 pCi/g Uncert: +/-0.234 TPU: +/-0.234 Manganese-54 U -0.00693 pCi/g Uncert: +/-0.128 TPU: +/-0.128 Niobium-94. U -0.0972 pCi/g Uncert: +/-0.118 TPU: +/-0.118 Potassium-40 U 0.676 pCi/g Uncert: +/-1.06 86

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 5 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 574336 TPU: +/-1.06 Radium-226 U 0.0129 pCi/g (75%-125%)

Uncert: +/-0.236 TPU: +/-0.236 Silver- 108m U -0.0142 pCi/g Uncert: +/-0.119 TPU: +/-0.119 Thallium-208 U 0.100 pCi/g Uncert: +/-0.123 TPU: +/-0.123 QC1201196539 MB Actinium-228 U 0.0435 pCi/g 10/03/06 06:13 Uncert: +/-0.091 TPU: +/-0.091 Americium-241 U -0.0204 pCi/g Uncert: +/-0.055 TPU: +/-0.055 Bismuth-212 U -0.00499 pCi/g Uncert: +/-0.109 TPU: +/-0.109 Bismuth-214 U 0.0577 pCi/g Uncert: +/-0.031 TPU: +/-0.031 Cesium- 134 U 0.00937 pCi/g Uncert: +/-0.0158 TPU: +/-0.0158 Cesium- 137 U -0.00291 pCi/g Uncert: +/-0.0137 TPU: +/-0.0137 Cobalt-60 U 0.000491 pCi/g Uncert: +/-0.0155 TPU: +/-0.0155 Europium- 152 U -0.00472 pCi/g Uncert: +/-0.0376 TPU: +/-0.0376 Europium- 154 U 0.00671 pCi/g Uncert: +/-0.0299 TPU: +/-0.0299 Europium- 155 U 0.0139 pCi/g Uncert: +/-0.0336 TPU: +/-0.0336 Lead-212 U 0.0167 pCi/g Uncert: +/-0.0287 TPU: +/-0.0287 Lead-214 U 0.0536 pCi/g Uncert: +/-0.0433 TPU: +/-0.0433 Manganese-54 U -0.00217 pCi/g 87

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 6 of 12 Parmname NOM Samnle Oual OC Units RPD% REC %8 Range Anlst Date Time Rad Gamma Spec Batch 574336 Uncert: +/-0.0116 TPU: +/-0.0116 Niobium-94 U 0.0106 pCi/g Uncert: +/-0.0136 TPU: +/-0.0136 Potassium-40 U 0.0767 pCi/g Uncert: +/-0.436 TPU: +/-0.436 Radium-226 U 0.0577 pCi/g Uncert: +/-0.031 TPU: +/-0.031 Silver- 108m U 0.0117 pCi/g Uncert: +/-0.0122 TPU: +/-0.0122 Thallium-208 U 0.0111 pCi/g Uncert: +/-0.0142 TPU: +/-0.0142 Batch 574337 QCI1201196543 172879001 DUP Actinium-228 0.897 0.839 pCi/g 7 (0%- 100%) MJH1 10/11/06 15:17 Uncert: +/-0.244 +/-0.207 TPU: +/-0.244 +/-0.207 Americium-241 u 0.0267 U 5.420E-05 pCi/g 199 (0% - 100%)

Uncert: +/-0.0306 +/-0.092 TPU: +/-0.0306 +/-0.092 Bismuth-212 0.812 0.486 pCi/g 50 (0%- 100%)

Uncert: +/-0.347 +/-0.281 TPU: +/-0.347 +/-0.281 Bismuth-214 0.605 0.649 pCi/g 7 (0%- 100%)

Uncert: +/-0.0985 +/-0.0929 TPU: +/-0.0985 +/-0.0929 Cesium- 134 U 0.0441 UI 0.00 pCi/g 41 (0% - 100%)

Uncert: +/-0.0379 +/-0.0381 TPU: +/-0.0379 +/-0.0381 Cesium- 137 0.0628 UI 0.00 pCi/g 24 (0%- 100%)

Uncert: +/-0.0298 +/-0.039 TPU: +/-0.0298 +/-0.039 Cobalt-60 U 0.00292 U 0.0132 pCi/g 128 (0%- 100%)

Uncert: +/-0.0266 +/-0.0239 TPU: +/-0.0266 +/-0.0239 Europium- 152 U 0.0115 U 0.000515 pCi/g 183 (0%0- 100%)

Uncert: +/-0.0583 +/-0.056 TPU: +/-0.0583 +/-0.056 Europium- 154 U -0.0674 U 0.00465 pCi/g 230 (0%- 100%)

Uncert: +/-0.0873 +/-0.0696 TPU: +/-0.0873 +/-0.0696 Europium- 155 U 0.0406 U 0.0599 pCi/g 38 (0%- 100%)

Uncert: +/-0.0597 +/-0.0865 88

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 7 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Gamma Spec Batch 574337 TPU: +/-0.0597 +/-0.0865 Lead-212 0.941 0.923 pCi/g 2 (0% - 20%)

Uncert: +/-0.0704 +/-0.0674 TPU: +/-0.0704 +/-0.0674 Lead-214 0.743 0.748 pCi/g 1 (0%- 20%)

Uncert: +/-0.0907 +/-0.0972 TPU: +/-0.0907 +/-0.0972 Manganese-54 U 0.00738 U 0.000202 pCi/g 189 (0%- 100%)

Uncert: +/-0.0274 +/-0.0231 TPU: +/-0.0274 +/-0.0231 Niobium-94 U -0.000653 U 0.00339 pCi/g 296 (0%- 100%)

Uncert: +/-0.0237 +/-0.0196 TPU: +/-0.0237 +/-0.0196 Potassium-40 14.8 14.4 pCi/g 3 (0%-20%)

Uncert: +/-1.20 +/-0.996 TPU: +/-1.20 +/-0.996 Radium-226 0.605 0.649 pCi/g 7 (0%- 100%)

Uncert: +/-0.0985 +/-0.0929 TPU: +/-0.0985 +/-0.0929 Silver- 108m U -0.0179 U 0.000414 pCi/g 209 (0%- 100%)

Uncert: +/-0.0198 +/-0.0166 TPU: +/-0.0198 +/-0.0166 Thallium-208 0.323 0.274 pCi/g 17 (0%- 100%)

Uncert: +/-0.0621 +/-0.045 TPU: +/-0.0621 +/-0.045 QC 1201196544 LCS Actinium-228 U -0.273 pci/g 10/11/06 15:18 Uncert: +/-0.555 TPU: +/-0.555 Americium-241 23.4 23.7 pCi/g 102 (75%-125%)

Uncert: +/-1.16 TPU: +/-1.16 Bismuth-212 U -0.102 pCi/g Uncert: +/-0.906 TPU: +/-0.906 Bismuth-214 U 0.230 pCilg Uncert: +/-0.209 TPU: +/-0.209 Cesium- 134 U 0.023 pCi/g Uncert: +/-0.145 TPU: +/-0.145 Cesium- 137 9.56 10.3 pCi/g 107 (75%-125%)

Uncert: +/-0.499 TPU: +/-0.499 Cobalt-60 14.3 14.9 pCi/g 104 (75%-125%)

Uncert: +/-0.654 TPU: +/-0.654 Europium- 152 U 0.0647 pCilg 89

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 8 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range AnIst Date Time Rad Gamma Spec Batch 574337 Uncert: +/-0.293 TPU: +/-0.293 Europium- 154 U -0.11 pCi/g Uncert: +/-0.241 TPU: +/-0.241 Europium- 155 U 0.0455 pCi/g Uncert: +/-0.295 TPU: +/-0.295 Lead-212 U 0.0606 pCi/g Uncert: +/-0.152 TPU: +/-0.152 Lead-214 U 0.0941 pCi/g Uncert: +/-0.213 TPU: +/-0.213 Manganese-54 U -0.099 pCi/g Uncert: +1-0.131 TPU: +/-0.131 Niobium-94 U -0.0874 pCi/g Uncert: +/-0.112 TPU: +/-0.112 Potassium-40 U 0.473 pCi/g Uncert: +/- 1.01 TPU: +/-1.01 Radium-226 U 0.230 pCi/g (75%-1 25%)

Uncert: +/-0.209 TPU: +/-0.209 Silver- 108m U 0.0591 pCi/g Uncert: +/-0.101 TPU: +/-0.101 Thallium-208 U 0.0619 pCi/g Uncert: +/-0.117 TPU: +/-0.117 QC1201196542 MB Actinium-228 U 0.0106 pCi/g 10/11/06 16:50 Uncert: +/-0.0479 TPU: +/-0.0479 Americium-241 U 0.0265 pCi/g Uncert: +/-0.0588 TPU: +/-0.0588 Bismuth-212 U 0.00203 pCi/g Uncert: +/-0.0709 TPU: +/-0.0709 Bismuth-214 U 0.0367 pCi/g Uncert: +/-0.0235 TPU: +/-0.0235 Cesium- 134 U 0.00883 pCi/g Uncert: +/-0.00962 TPU: +/-0.00962 90

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 9 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range AnIst Date Time Rad Gamma Spec Batch 574337 Cesium- 137 U 0.00431 pCi/g Uncert: +/-0.00913 TPU: +/-0.00913 Cobalt-60 U 0.000774 pCi/g Uncert: +/-0.00909 TPU: +/-0.00909 Europium-152 U -0.0167 pCi/g Uncert: +/-0.0221 TPU: +/-0.0221 Europium- 154 U 0.00683 pCi/g Uncert: +/-0.0223 TPU: +/-0.0223 Europium- 155 U -0.00959 pCi/g Uncert: +/-0.0268 TPU: +/-0.0268 Lead-212 UI 0.00 pCi/g Uncert: +/-0.0167 TPU: +/-0.0167 Lead-214 U 0.0246 pCi/g Uncert: +/-0.019 TPU: +/-0.019 Manganese-54 U . 0.00784 pCi/g Uncert: +/-0.0106 TPU: +/-0.0106 Niobium-94 U 0.00214 pCi/g Uncert: +/-0.009 TPU: +/-0.009 Potassium-40 U 0.134 pCi/g Uncert: +/-0.210 TPU: +/-0.210 Radium-226 U 0.0367 pCi/g Uncert: +/-0.0235 TPU: +/-0.0235 Silver-108m U 0.00185 pCi/g Uncert: +/-0.00804 TPU: +/-0.00804 Thallium-208 U 0.00852 pCi/g Uncert: +/-0.0165 TPU: +/-0.0165 Rad Gas Flow Batch 574221 QC1201196232 172875011 DUP Strontium-90 U -0.0251 U 0.0221 pCi/g 0 (0% - 100%) KSDI 10/04/06 23:26 Uncert: +/-0.0121 +/-0.0157 TPU: +/-0.0121 +/-0.0157 QC1201196234 LCS Strontium-90 1.74 1.83 pCi/g 105 (75%-125%) 10/04/06 23:26 Uncert: +/-0.121 91

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 10 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range AnIst Date Time Rad Gas Flow Batch 574221 TPU: +/-0.133 QC1201196231 MB Strontium-90 U 0.0207 pCilg 10/04/06 23:26 Uncert: +/-0.0142 TPU: +/-0.0142 QC1201196233 172875011 MS Strontium-90 3.72 U -0.0251 3.25 pCi/g 87 (75%-125%) 10/04/06 23:26 Uncert: +/-0.0121 +/-0.225 TPU: +/-0.0121 +/-0.244 Rad Liquid Scintillation Batch 574010 QC1201195649 172879001 DUP Technetium-99 U -0.0681 U 0.099 pCi/g 0 (0% - 100%) KXR1 10/09/06 09:12 Uncert: +/-0.263 +/-0.279 TPU: +/-0.263 +/-0.279 QC1201195651 LCS Technetium-99 13.0 12.2 pCi/g 94 (75%-125%) 10/09/06 09:44 Uncert: +/-0.488 TPU: +/-0.562 QCI201195648 MB Technetium-99 U 0.0765 pCi/g 10/09/06 08:55 Uncert: +/-0.239 TPU: +/-0.239 QC1201195650 172879001 MS Technetium-99 13.0 U -0.0681 12.3 pCi/g 95 (75%-125%) 10/09/06 09:28 Uncert: +/-0.263 +/-0.562 TPU: +/-0.263 +/-0.629 Batch 574014 QC1201195658 172875001 DUP Carbon-14 U -0.018 U -0.0777 pCi/g 0 (0% - 100%) %XD2 10/04/06 00:15 Uncert: +/-0.0708 +/-0.0723 TPU: +/-0.0708 +/-0.0723 QC1201195660 LCS Carbon- 14 6.74 7.75 pCi/g 115 (75%-125%) 10/04/06 01:35 Uncert: +/-0.496 TPU: +/-0.510 QC1201195657 MB Carbon- 14 U -0.0593 pCi/g 10/03/06 23:12 Uncert: +/-0.067 TPU: +/-0.067 QC1201195659 172875001 MS Carbon-14 7.18 U -0.018 7.99 pCi/g 111 (75%-125%) 10/04/06 01:17 Uncert: +/-0.0708 +/-0.510 TPU: +/-0.0708 +/-0.525 Batch 574527 QC1201196976 172875001 DUP Iron-55 U 1.82 U -0.127 pCi/g 0 (0% - 100%) MXPI 10/04/06 21:11 Uncert: +/-42.6 +/-39.5 TPU: +/-42.6 +/-39.5 92

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 11 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range Anist Date Time Rad Liquid Scintillation Batch 574527 QC1201196978 LCS Iron-55 631 629 pCilg 100 (75%-125%) 10/04/06 21:43 Uncert: +/-58.3 TPU: +/-76.2 QC1201196975 MB Iron-55 U 20.6 pCilg 10/04/06 20:54 Uncert: +/-32.0 TPU: +/-32.0 QC1201196977 172875001 MS lron-55 663 U 1.82 636 pCi/g 96 (75%-125%) 10/04/06 21:27 Uncert: +/-42.6 +/-59.5 TPU: +/-42.6 +/-74.9 Batch 574530 QC1201196984 172879007 DUP Nickel-63 U 9.42 10.2 pCi/g 8 (0% - 100%) vIXP1 10/06/06 12:07 Uncert: +/-6.03 +/-6.13 TPU: +/-6.04 +/-6.14 QC1201196986 LCS Nickel-63 500 469 pCi/g 94 (75%-125%) 10/06/06 13:10 Uncert: +/-15.9 TPU: +/-21.7 QC1201196983 MB Nickel-63 U 6.26 pCi/g 10/06/06 11:35 Uncert: +/-7.08 TPU: +/-7.08 QC1201196985 172879007 MS Nickel-63 556 U 9.42 528 pCi/g 95 (75%-125%) 10/06/06 12:38 Uncert: +/-6.03 +/-17.4 TPU: +/-6.04 +/-24.7 Batch 579033 QC1201206810 172879001 DUP Tritium U -3.35 U 0.248 pCi/g 0 (0% - 100%) IXPI 10/16/06 19:40 Uncert: +/-6.99 +/-6.67 TPU: +/-6.99 +/-6.67 QC1201206812 LCS Tritium 67.6 72.3 pCi/g 107 (75%-125%) 10/16/06 20:12 Uncert: +/-12.3 TPU: +/-12.3 QC1201206809 MB Tritium U 1.63 pCi/g 10/16/06 19:23 Uncert: +/-8.10 TPU: +/-8.10 QC1201206811 172879001 MS Tritium 58.5 U -3.35 51.6 pCi/g 88 (75%-125%) 10/16/06 19:56 Uncert: +/-6.99 +/-10.2 TPU: +/-6.99 +/-10.3 93

GENERAL ENGINEERING LABORATORIES, LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 172879 Page 12 of 12 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Notes:

The Qualifiers in this report are defined as follows:

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

< Result is less than value reported

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

UI Gamma Spectroscopy--Uncertain identification X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y QC Samples were not spiked with this compound A RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL h Preparation or preservation holding time was exceeded N/A indicates that spike recovery limits do not apply when sample concentration exceeds spike conc. by a factor of 4 or more.

• • Indicates analyte is a surrogate compound.

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

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

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

94

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

RELEASE RECORD ATTACHMENT 3 (DQA RESULTS)

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

RELEASE RECORD ATTACHMENT 3A (PRELIMINARY DATA REVIEW)

Health Physics Procedure GPP-GGGR-R5121-001 Attachment B, Rev. CY-00I MAJOR Preliminary Data Review Form - Samples for the Sign Test Survey Unit: 9805- (0000-,

Survey Unit Name: PENINSULA SUBSURFACE Classification: C Survey Media: Soil Type of Survey: Final Status Survey Type of Measurement: Gross Measurement Number of Measurements: 15 Operational DCGL (pCi/g) 5.3'8E+00 BASIC STATISTICAL QUANTITIES Cs-137 Minimum Value: -4.24E-03 Maximum Value: 8.83E-02" Mean: 2*.2E-02 Median: 1.60E-02 Standard Deviation: 2.74E-02 Skew: 1.172 ,_

RADIONUCLIDE CONCENTRATION (pCi/g)

NUMBER Cs-137 Cs Identified?

9805-0000-00IF 1.31 E-02 NO 9805-0000-002F 1.64E-02 ._NO 9805-0000-003F 8.83E:02 YES 9805-0000-004F .2.68E-02 ...... _,_NO _ _ _

9805-0000-005F 2.11 E.O2. _ _ ____NO .... _.....

9805-0000-006F .... 1OE-03 ' ____._. NO GI __"- _" ______

9805-0000-007F __ . -4.24E-03 _ __  :" NO " ________ ._.....

9805-0000-Q0 8F 6.28E-02 ____'____YES ___...... _ .... _.

9805-0000-009F , .47El Q2 E______"__ NO ___ -___ ........

9805-0000-010F " 5.13E-02 . YES .

9805-0000-011F , 1.60E-02 NO --

9805-0000-012F _ _104E-02 ' NO 9805-0000-013F 1.71E-03 NO . ...

9805-0000-014F 9805-0000-015F 1.11E-02 6.93E-02 _ _ _NO YES .

Performed By: 1jv/ý Date: 5-6.3 Independent Review: Date: /0 (10

Hfalth Physics Procfdurf 24265-000-GPP-GGGR-R5123-000-Rev.CY-OOC Hfalth Physics Procfdurf 24265-000-GPP-GGGR-R5 I23-000-Rev.CY-00C Preliminary Data Review Form - Judgemental Samples Survey Unit: 9805- 0000 Survey Unit Name:

PENINSULA SUBSURFACE Classification: C Survey Media: Soil Type oe Survey: Final Status Survey Type oe Measurement: Gross Measurement Number of Measurements:

Operational DCGL (pCi/g) [j _ __5_ _ _ _ _ _ _ _

BASIC STATISTICAL QUANTITIES Cs-137 Minimum Value: -4.79E-03 Maximum Value: ,3.42E-02 Mean: 1 28E,-02 Median: 2.57E-02 Standard Deviation: 1.79E-02 Operational DCGL '5.38E+/-+00*

RADIONUCLIDE CONCENTRATION (pCi/g)

NUMBER Cs-137 20 Cs ID'ed? > DCGL 9805-0000-016F 0.,OE+00 4.2QE7-02 NO , _ __ NO 9805-0000-017F 3.42E-02 2.12E-02 YES '_"_ NO 9805-0000-01 8F 2.57E-02 2.49E-o2 . ..... YES _1____ . NO 9805-0000-019F 4.79E-03' 1.42E-02 ".NONO 9805-0000-020F 2.891E-02 2.49E-02 ____... ... YES _ _, NO Performed By: Date: 1 41/ , - (

Independent Review: Date: ii/ 0(o0/(O

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

RELEASE RECORD ATTACHMENT 3B (GRAPHICAL REPRESENTATION OF DATA)

Health Physics Procedure GGGR-R5123-Rev.CY-001 Attachment C Health Physics Procedure GGGR-R5 123-Rev.CY-0O 1 Attachment C Quantile Plot For Cesium - 137 Survey Unit: 9805-0000 Survey Unit Name: PENINSULA SUBSURFACE Mean: 2.72E-02 pCi/g 1.OOE-01

• 8.OOE-02 6.OOE-02--

4.OOE-02 2.OOE-02 -

0 Q 0.OOE+O0

-2.OOE-02 20 Percentage Cs-137 Rank Percentage

-4.24E-03 1 3 %

1.71E-03 2 10%

9.1OE-03 3 17 %

1.04E-02 4 23 %

1.1IE-02 5 30 %

1.31E-02 6 37 %

1.47-02 7 43%

1.60E-02 8 50 %

1.64E-02 9 57 %

2.1IE-02 10 63%

2.68E-02 11 70%

5.13E-02 12 77 %

6.28E-02 13 83 %

6.93E-02 14 90 %

8.83E-02 15 97%

Prepared By:

Reviewed By:'

/ýj'- Date:

Date:

/ /-!S---O (

lI I'( 1o (0

Health Physics Procedure GGGR-R5123-Rev.CY-001 Attachment C Frequency Plot For Cesium-137 Survey Unit: 9805-0000 Survey Unit Name: PENINSULA SUBSURFACE Mean: 0.027 pCi/g 10 8-6--

L..S4--

u. 2 0

0.000 0.020 0.040 0.060 0.080 0.100 Upper End Value (pCi/g)

Upper End Observation Observation %

Value Frequency Frequency 0.000 1 7%

0.020 2 13%

0.040 8 53%

0.060 1 7%

0.080 2 13%

0.100 1 7%

Total 15 100%

Prepared By: 1K ~ A Date: /"/ -//.f--)-

Reviewed Date: 111¢,00

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

RELEASE RECORD ATTACHMENT 3C (SIGN TEST)

Health Physics Procedure GPP-GGGR-R5]2 1-000 Attachment A, Rev. CY-00 I MAJOR Sign Test Calculation Sheet For Single Radionuclide Survey Unit Number: 9805-0000 Survey Unit Name: PENINSULA SUBSURFACE WP&IR#: 2006-0007 Classification : C TYPE I (c error):0.05 I TYPE I(P error):0.05 Radionuclide: Cs-137 Operational DCGL (pCi/g): 5.38 Results Cs-137 DCGL-Result Sign 1.31E-02 5.37E+00 1.64E-02 5.36E+00 8.83E-02:?; 5.29E+00 2.68E-02 5.3 5E+00 2.14I-E-02 5.36E+00 9.106E-03 5.37E+00

-4.24E-03 5.38E+00 6.28E-02 5.32E+00 1.47,E-02 5.37E+00 5.13E-02 5.33E+00 1.60E-02 5.36E+00 1.0ZlE-02 5.37E+00 1.71&E03 5;38E+00 1.l1 E-702 5.37E+00 6.93E-02 5.3 4E+00 Number of Positive Differences (S+): 15 Critical Value: 11 Survey Unit: Meets Acceptance Criterion Performed By: L Date:

Independent Review: Date.

,--,i 1

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

RELEASE RECORD ATTACHMENT 3D (QC SPLIT RESULTS)

Connecticut Yankee Decommissioning Project Health 24265-000-GPR-GGGR-R5124-000 Attachment A Physics Procedure Split Sample Assessment Form Survey Area Survey 0 Survey 98050000PENINSULA: PE....ULA SUBSURFACE:

SUBSURFAC

1. 9 Unit #: Unit Name:

Sample Plan or WPIR#: 2006-0007 SML #:; 9805-0000-00IFS Sample

Description:

Comparison of split samples collected from sample measurement location #01 and analyzec using gamma spectroscopy by an off-site vendor laboratory. The standard sample was 9805-0000-00IF the comparison sample was 9805-0000-001FS.

STAN DARD COMPARI SON Radionuclide Activity Standard Resolution Agreement Activity Standard Comparison Acceptable (Y/N)

Value Error Range Value Error Ratio Cs-137 1.31E-02 1.40E-02 1 NONE . 1.48E-02 1.08E-02' 1.13 N/A Ký4 ... ,I5E+0I :,4,59E-01

.. .. 25 0.75 1.33 I.22E+01 5.05E-01 1.06 Y Comments/Corrective Actions: Cs-137 is reported at levels Table is provided to show acceptance criteria used approaching or below detection limits. A small variance in the to assess split samples.

reported activity for the samples could result in a low resolution and a corresponding unsatisfactory comparison ratio. Guidance Resolution Agreement Range for sample agreement was developed from USNRC Inspection 4 7 0.50 2.00 Procedure 84750 which does not provide agreement ranges for 8 15 0.60 1.66 resolutions less than 4. Therefore, a statement of acceptability 16 50 0.75 1.33 in such cases is not appropriate. However, K-40 was found to be 51 200 0.80 1.25 Dresent at an acceptable level of agreement. Therefore, no further action is warranted. >200 0.85 1.18 Per By: Date: Reviewed By: Date:

WPIR - Work Plad'jnd Inspection Record SML - Sample Measurement Location designation 111ýj Page I of I

Connecticut Yankee Decommissioning Project Health 24265-000-GPR-GGGR-R5124-000 Attachment A Physics Procedure Split Sample Assessment Form Survey 9805 Survey 0 Survey Unit ...... SUBSURFACE Area#: , Unit #: 0000 Name: PENNSULA Sample Plan or WPIR#: 2006-0007 SML #: 9805-0000-004FS Sample

Description:

Comparison of split samples collected from sample measurement location #04 and analyzed using gamma spectroscopy by an off-site vendor laboratory. The standard sample was 9805-0000-004F, the comparison sample was 9805-0000-004FS.

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

Value Error Range Value Error Ratio Cs-137 2.68E-02~ 1.65E-02 2 NONE - 9.26E-03 1.1OE-02 0.35 N/A K-40 1*Z.2lE+/-01 4.72E-01 26 0.7 -1.33, 1.22E+/-OI 5.30E-01 1.01 Y Comments/Corrective Actions: Cs-137 is reported at levels Table is provided to show acceptance criteria used approaching or below detection limits. A small variance in the to assess split samples.

reported activity for the samples could result in a low resolution and a corresponding unsatisfactory comparison ratio. Guidance Resolution Agreement Range for sample agreement was developed from USNRC Inspection 4 7 0.50 2.00 Procedure 84750 which does not provide agreement ranges for 8 15 0.60 1.66 resolutions less than 4. Therefore, a statement of acceptability 16 50 0.75 1.33 in such cases is not appropriate. However, K-40 was found to be 51 200 0.80 1.25 present at an acceptable revel of agreement. Therefore, no further action is warranted. >200 0.85 1.18 Performed By: Date: Reviewed By: Date:

/ ,<-' 7-/S C-)O W1PIR - Work Plan a~d ispection Record SML - Sample Measurement Location designation

ýýJ Page I of I

SUBSURFACE AREA ASSOCIATED WITH THE PENINSULA (SURVEY UNIT 9805-0000)

RELEASE RECORD ATTACHMENT 3E (COMPASS DQA WITH POWER CURVE)

Surface Soil Survey Plan Survey Plan Summary Site: subsurface 9805 (Peninsula)

Planner(s): rwm Survey Unit Name: Peninsula Subsurface Soil (9805-0000)

Comments: Class C Subsurface Survey Unit Area (M2 ): 130,380 Classification: 3 Selected Test: Sign Estimated Sigma (pCi/g): 0.0274 DCGL (pCi/g): 5.38 Sample Size (N): 14 LBGR (pCi/g): 5.31 Estimated Conc. (pCi/g): 0 Alpha: 0.050 Estimated Power: 1 Beta: 0.050 Prospective Power Curve 1

A 0.9 0.8

%j.,0.7 0.6 0.5 0.4 0.3 0.2 0.1 0

0 1 2 3 4 5 6 Soil Concentmfrdon (Ci/g), inclmWg backglrsud

-Power - DCGL - - Estimated Power mm LBGR N 1-beta COMPASS vl.0.0 1111512006 Page I

'*2%Surface Soil Survey Plan Contaminant Summary DCGLw Inferred Modified DCGLw Scan MDC Contaminant (pCi/g) Contaminant Ratio (pCilg) (pCilg)

Cs-1 37 5.38 N/A N/A N/A N/A Survey Unit Estimate Reference Area Estimate (Mean +/- 1-Sigma) (Mean +/- 1-Sigma)

Contaminant (pCi/g) (pCi/g)

Cs-137 0.0272 +/- 0.0274 N/A COMPASS v1.0.0 11/1512006 Page 2