ML12059A365

Plum Brook Reactor Facility Final Status Survey Report, Attachment 18, Revision 0, Excavated and Backfill Material

ML12059A365
Person / Time
Site:	Plum Brook
Issue date:	02/23/2012
From:	Mann B US National Aeronautics & Space Admin (NASA), John H. Glenn Research Ctr at Lewis Field
To:	NRC/FSME
References
Download: ML12059A365 (229)

Text

Plum Brook Reactor Facility Final Status Survey Report Attachment 18 Revision 0 Excavated and Backfill Material

FINAL STATUS SURVEY REPORT ROUTING AND APPROVAL SHEET Document

Title:

Final Status Survey Report, Attachment 18 Excavated and Backfill Material Revision Number: 0 ROUTING SIGNATURE DATE Prepared By B. Mann 2/23/ 12 Prepared By N/A Independent Technical Reviewer R. Case 2/23/12 Other Reviewer, QA Manager J. Thomas 2/23/12 Other Reviewer FSS/Characterization Manager W. Stoner 2/23/12 NASA Project Radiation Safety Officer W. Stoner 2/23/ 12 11

NASA PBRF DECOMMISSIONING PROJECT CHANGE/CANCELLATION RECORD DOCUMENT TITLE: Final Status DOCUMENT NO: NA REVISION NO: 0 Survey Report, Attachment 18, Excavated and Backfill Material Revision 0: Initial issue of Report Form AD-01/3 Rev 1 iii

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 LIST OF EFFECTIVE PAGES DOCUMENT NO: NA REVISION NO: 0 Page No. Revision Level Page No. Revision Level Page No. Revision Level Cover Page 0 Routing & Approval 0

Sheet Change/Cancellation 0

Record LOEP 0 TOC 0 List of Tables & List 0

of Figures List of Acronyms &

0 Symbols, 2 pages Text, 44 pages 0 Appendix A 0

13 pages Appendix B 0

94 pages Appendix C 0

48 pages Appendix D 0

14 pages Appendix E 0

8 pages Form AD-01/5 Rev 2 iv

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 TABLE OF CONTENTS 1.0 Introduction .................................................................................................................... 1 2.0 PBRF Site Description and History .............................................................................. 2 2.1 PBRF Site Description.................................................................................................. 2 2.2 History of Site Operations ............................................................................................ 3 2.3 Site Geology and Soil Description ............................................................................... 5 2.4 Site Soil Characterization ............................................................................................. 6 2.5 Sources of Excavated Materials ................................................................................... 8 3.0 Handling and Processing of Excavated Materials ..................................................... 13 3.1 Process Overview ....................................................................................................... 13 3.2 Survey and Sorting with Conveyor System ................................................................ 16 3.3 Survey of Material in Lifts ......................................................................................... 18 3.4 Post-FSS Handling and Disposition ........................................................................... 18 4.0 Survey Design and Implementation ........................................................................... 18 4.1 Basic FSS Plan Requirements .................................................................................... 19 4.2 Survey Units and Classification for FSS .................................................................... 20 4.3 Number of Measurements and Samples ..................................................................... 22 4.4 Instrumentation and Measurement Sensitivity ........................................................... 26 5.0 Survey Results .............................................................................................................. 29 5.1 Scan Surveys and Investigations ................................................................................ 29 5.2 Fixed Measurements and Tests................................................................................... 32 5.3 Verification and QC Samples ..................................................................................... 39 5.4 ALARA Evaluation .................................................................................................... 40 5.5 Comparison with EPA Trigger Levels ....................................................................... 41 5.6 Conclusions ................................................................................................................ 42 6.0 References ..................................................................................................................... 42 7.0 Appendices .................................................................................................................... 44 Appendix A - Exhibits Appendix B - ScanSort Clean Discharge Soil Sample Results Appendix C - Soil Lift Survey Unit Maps and Tables Showing Measurement Locations .. 44 Appendix D - Soil Lift Survey Sample Results Appendix E - Verification and QC Sample Results v

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 LIST OF TABLES Table 1, Spill Area Summary.......................................................................................................... 7 Table 2, Principal Radionuclides and Activity Fractions for Site Soils ......................................... 8 Table 3, Single Radionuclide DCGL Values for Soil ................................................................... 19 Table 4, Surrogate DCGLs for Soil FSS Scan Survey.................................................................. 20 Table 5, Class-Based Survey Scan Coverage and Action Level Requirements ........................... 20 Table 6, Survey Unit Listing for Soil Lifts ................................................................................... 21 Table 7, Summary of Survey Designs for Soil Lifts ..................................................................... 23 Table 8, Sensitivity Analysis for Survey Unit OL-5-1 FSS Design ............................................. 25 Table 9, Typical Detection Sensitivities of Field Instruments used for Lift Soil Scans ............... 27 Table 10, ScanSort System Diversion Events Caused by DCS Exceedance ................................ 30 Table 11, Soil Lift Scan Survey Results ....................................................................................... 30 Table 12, FSS Sample Results for ScanSort Clean Discharge ..................................................... 32 Table 13, FSS Sample Results for Soil Lifts ................................................................................ 38 Table 14, NRC Soil Screening Level Values and ALARA Comparison ..................................... 41 Table 15, Comparison of Soil Sample Results with EPA Trigger Levels .................................... 41 LIST OF FIGURES Figure 1, PBRF Site Layout ............................................................................................................ 4 Figure 2, PBRF Site Showing Excavated Areas ........................................................................... 12 Figure 3, Soil Staging and Processing Areas ................................................................................ 14 Figure 4, Excavated Soil Process Flow Chart ............................................................................... 15 Figure 5, Schematic of Mactec Orion ScanSort Conveyor ......................................................... 17 vi

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 LIST OF ACRONYMS & SYMBOLS alpha; denotes alpha radiation, also type I error probability in hypothesis testing AEC Atomic Energy Commission ALARA As Low As Reasonably Achievable AOC Area of Concern, impacted open land areas adjacent to Pentolite Ditch beta; denotes beta radiation, also type II error probability in hypothesis testing bi background counts in observation interval CRB Cold Retention Basins, Building 1154 CFR Code of Federal Regulations CPT Cold Pipe Tunnel cm centimeters cm2 square centimeters cps counts per second cpm counts per minute delta, DCGLW - LBGR d Scan surveyor sensitivity index DCGL Derived Concentration Guideline Level DCGLEMC DCGL for small areas of elevated activity, used with the Elevated Measurement Comparison test (EMC)

DCGLW DCGL for average concentration over a survey unit, used with statistical tests.

(the W suffix denotes Wilcoxon)

DCS Diversion Control Set Point EMC Elevated Measurement Comparison EPA US Environmental Protection Agency FSS Final Status Survey FSSP Final Status Survey Plan FSSR Final Status Survey Report gamma g gram HRA Hot Retention Area, Building 1155 i observation counting interval during scan surveys in. inch LMI Ludlum Measurements, Inc.

LBGR Lower Bound of the Gray Region m2 square meters MARSSIM Multi-Agency Radiation Survey and Site Investigation Manual MDA Minimum Detectable Activity MDC Minimum Detectable Concentration MDCscan Minimum Detectable Concentration for scanning surveys MDCR Minimum Detectable Count Rate MOU Memorandum of Understanding mrem millirem MW Megawatt MWH Montgomery Watson Harza, Inc.

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 LIST OF ACRONYMS & SYMBOLS, Continued NACA National Advisory Committee on Aeronautics NASA National Aeronautics and Space Administration N Number of FSS measurements or samples established in a survey design N/A Not Applicable NaI Sodium Iodide scintillation detector NIST National Institute for Standards and Technology NRC US Nuclear Regulatory Commission PBOW Plum Brook Ordinance Works PBRF Plum Brook Reactor Facility PNL Pacific Northwest Laboratory Standard normal distribution function p surveyor efficiency for scan surveys pCi/g picocuries per gram

% percent PPH Primary Pump House, Building 1134 QC Quality Control RESRAD RESidual RADioactive - a pathway analysis computer code developed by Argonne National Laboratory for assessment of radiation doses. It is used to derive cleanup guideline values for soils contaminated with radioactive materials RAL Remedial Action Level RCRA Resource Conservation and Recovery Act ROI Region of Interest, energy channels which encompass the photopeak of a specified radionuclide in gamma spectroscopy ROLB Reactor Office and Laboratory Building, Building 1141 RWP Radiation Work Permit s seconds generic symbol for standard deviation of a population SAIC Science Applications International Corporation SEB Service Equipment Building, Building 1131 SR Survey Request TBD Technical Basis Document

µ Mean activity concentration UL Upper limit of the confidence interval about the mean USACE United States Army Corps of Engineers VOC Volatile Organic Compound VSP Visual Sample Plan WEMS Water Effluent Monitoring System, Building 1192 WEP Work Execution Package WHB Waste Handling Building, Building 1133 Z1- Proportion of standard normal distribution values less than 1-Z1- Proportion of standard normal distribution values less than 1-Mathematical symbol for infinity viii

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 1.0 Introduction This report presents the results of the final status radiological survey of excavated and backfill material (soil) at the Plum Brook Reactor Facility (PBRF). It is Attachment 18 of the PBRF Final Status Survey Report (FSSR).1 This attachment describes the origin, handling, final status survey (FSS) and disposition of soils excavated during the PBRF decommissioning project.2 It describes the methods used and presents results of the FSS measurements.

As stated in the PBRF Final Status Survey Plan (FSSP) [NASA 2007], the goal of the decommissioning project is to release the facility for unrestricted use in compliance with the requirements of US NRC 10CFR20 Subpart E. The principal requirement is that the dose to future site occupants will be less than 25 mrem/y. Subpart E also requires that residual contamination be reduced to levels as low as reasonably achievable (ALARA). Single radionuclide Derived Concentration Guideline Levels (DCGLs) have been established for PBRF site soils in the FSSP. The principal soil radionuclides of PBRF origin are Cs-137, Co-60 and Sr-90. Their respective DCGLs are: 14.7, 3.8 and 5.4 pCi/g. The soil DCGLs are applied to surface and subsurface soils and to excavated and backfill materials.3 It is noted that this FSS Report Attachment is unique in that it reports on the FSS of excavated material - material which is removed from various areas of the site and processed for FSS at central locations. Whereas the other FSS Report Attachments all report on the FSS of structures and in-situ soil.

The survey measurement results and supporting information presented herein demonstrate that residual contamination levels in excavated and backfill materials that remain on the PBRF site are well below the DCGLs. Additionally, it is shown that residual contamination has been reduced to levels that are consistent with the ALARA requirement. Therefore, the excavated and backfill materials that remain on the PBRF site meet the criteria for unrestricted release.

Section 2.0 of the report describes the PBRF site, summarizes the history of the site and site characterization and identifies where excavated soil originated. Section 3.0 describes handling and disposition of excavated materials and soils.

Section 4.0 presents methods for survey design and FSS of excavated soils and backfill material. This section includes applicable FSS Plan requirements, establishment of MARSSIM classification and the survey design approach [USNRC 2000]. Also, FSS field and laboratory instrumentation and measurement sensitivities are described.

1 The PBRF Final Status Survey Report comprises the report main body and several attachments. The entire final report provides the basis for requesting termination of NRC Licenses TR-3 and R-93 in accordance with 10CFR50.82 (b) (6).

2 In addition to the present FSS Report attachment which addresses excavated materials, other attachments address FSS of soil in subsurface excavated areas (Attachment 7) and in open land areas (Attachment 16).

3 Material identified as backfill is ultimately intended for filling in excavated areas and for PBRF site restoration.

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Survey results are presented in Section 5.0. This section includes a summary of the FSS measurements, comparison to the DCGL, tests performed and an evaluation of residual contamination levels relative to the ALARA criterion.

References cited in the report are listed in Section 6.0. Appendix A contains photos and drawings to supplement the text. Results of the analysis of soil samples collected from the clean discharge of the soil conveyor-sorter system (Mactec ScanSort) are reported in Appendix B. Appendix C contains the survey design maps and sample location coordinates for the FSS of soil in lifts and Appendix D provides the analysis results for samples collected from the lift survey units. Verification and QC sample results are presented in Appendix E.

2.0 PBRF Site Description and History A description of the PBRF site is provided and the history of facility operations summarized to provide background for identification of excavated material. The site soils are described and results of pre-excavation soil characterization surveys presented. Areas are identified where excavation occurred during decommissioning and soil remediation activities.

2.1 PBRF Site Description The PBRF site is located near the northern edge of the 6400 acre Plum Brook Station. The site, as described in the NRC license that controls decommissioning activities, comprises 27 acres which contain the Reactor Building and support buildings and facilities.4 The controlled-access site is bounded on the south by Pentolite Rd., on the west by Line 2 Rd. and on the north and east by a boundary fence. The southwest corner of the site, the intersection of Line 2 and Pentolite Roads is used as a reference location.5 The coordinates are 41o 23 03.73 North Latitude and 82o 41 05.80 West Longitude.6 Figure 1 shows the site layout and remaining PBRF buildings (as of early February 2012).

The site is generally level and graded to promote surface water drainage to the Water Effluent Monitoring System (WEMS) located at the south east corner of the site [USACE 2004]. The site reference grade level at the Reactor Building is 631 ft. above mean sea level [NACA 1956].7 4

See Technical Specifications for the License No. TR-3 (Amendment 13) and License No. R-93 (Amendment 9) [NASA 2007a].

5 Prior to decommissioning, the Reactor Vessel center was typically used as a local reference location for the PBRF.

6 Note that the coordinate grid system used for construction of the PBRF was a local coordinate system established by the Army Corps of Engineers in the 1940s for construction of the Plum Brook Ordinance Works. This local grid system has been balanced (tied in) to the Ohio regional state plane coordinate system by NASA to align Glenn Research Center and Plum Brook Station geographic references with modern high-accuracy geo-reference systems. This provides the ability to reference locations specified on historical drawings to global latitude and longitude [Hagelin 2010].

7 The finished floor elevation of the Reactor Building first floor is designated as the 0 ft. elevation for major PBRF buildings. This is one ft. above grade level at the Reactor Building location.

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 The PBRF 27 acre site contained several multi-story buildings and multiple support structures. Below-grade structures and utilities extended throughout the site. These included underground pipe and utility tunnels, storm drains, catch basins, sanitary sewers, water and gas supply lines, cathodic protection wells and ground water monitoring wells. Prior to decommissioning, about 25% of the site was occupied by buildings, water processing structures (WEMS, sludge basins, CRBs, etc) paved roadways, parking areas, sidewalks and equipment pads. The remainder of the site surface was open land soil areas.

Areas adjacent to the PBRF on the north (north of North Rd.) contained utilities and support facilities for PBRF operations. These included the Assembly Test and Storage (ATS)

Building, the former Reactor Office Building, an electric substation, a deionized water storage tank, gas tanks and cryogenic storage tanks and water treatment sludge drying basins. All these facilities and the surrounding land area were cleared of licensed radioactive materials and released from the PBRF NRC licenses prior to decommissioning of the PBRF.8 2.2 History of Site Operations Plum Brook Station was formerly a World War II era explosives manufacturing facility and prior to that was occupied by family farms and orchards [Bowles 2006]. Construction of the Plum Brook Ordinance Works (PBOW) in 1941-42, involved razing of existing farms, residences and small commercial buildings and construction of explosives manufacturing facilities. After World War II, the PBOW lay dormant for 10 years. In 1955 the Department of the Army transferred 500 acres in the northern portion of the former Ordinance Works to the National Advisory Committee on Aeronautics (NACA), the NASA predecessor, for construction of the Plum Brook test reactor facility.

The first tasks in the PBRF construction were to remove the PBOW facilities and clean up chemical residues from explosives production. This included removal and cleanup of two large chemical waste water retention basins located in the southeastern portion of the present-day site. See Exhibit 1 of Appendix A for an aerial view of the site prior to BPRF construction showing PBOW production lines and the retention basins.

Construction of the Plum Brook Reactor and associated facilities required extensive excavation and backfilling. Soil was excavated to bedrock and bedrock was excavated in construction of the Reactor Building and nearby support buildings and in construction of large water handling facilities, the Cold Retention Basins (CRB) and Emergency Retention Basin (ERB) [USACE 2004]. See construction photos, Exhibits 2 and 3 of Appendix A. These photos illustrate the extensive excavation of the site during PBRF construction. The entire 27 acre site was graded and a storm drain system installed to direct surface runoff towards the WEMS [NASA 2007]. This included filling in an existing surface stream (see Exhibit 4 of Appendix A). These actions reversed the direction of surface water drainage which was formerly toward the northeast.

8 License Number TR-3, Amendment No. 6, approved by NRC letter dated Dec. 17, 1976.

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Figure 1, PBRF Site Layout 4

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Major PBRF milestones are listed below: 9 1956 - September, groundbreaking for PBRF.

1956 - Reactor Building construction initiated.

1959 - 1960 Major building construction completed.

1961 - June, 60 MW Test Reactor critical.

1973 - January 5th, Reactor shutdown.

1973 - June 30, PBRF facilities placed in standby condition.

1985 - Initial radiological characterization, Teledyne Isotopes Inc.

1989 - Follow-up radiological characterization, GTS-Duratek.

2002 - Decommissioning Plan approved. Equipment removal and initial building decontamination.

2005 - 2010 - Decommissioning of Buildings and Excavation of Soil and Materials.

2010 - 2011 FSS of Excavated Soil.

It is noted that the major buildings were completed in the construction period, 1956 - 1960, but modifications to the site that affected areas excavated during decommissioning occurred throughout the operations period. These included installation of cathodic protection wells (1961-62), construction of the Waste Handling Building (1962-64), construction of the Assembly and Test Storage Building (ATS, Building 1142) utility and personnel passage tunnel to the Reactor Building (1964-65), WEMS modifications (several times during 1961 -

1973) and modification of storm drains (1968).

2.3 Site Geology and Soil Description The Plum Brook Station and the PBRF site are underlain by shale and sandstone formations at varying depths (approximately 2 to 25 ft.) across the station with surface outcrops at some locations. The depth to bedrock is about 25 ft in the vicinity of the Reactor Building [NASA 2007]. Surface deposits constitute a mixture of soils derived from fine sand, silt, clay and unconsolidated glacial till [NASA 1959]. Soils in the vicinity of the PBRF are composed of loam, loamy fine sand and fine sandy loam [USACE 2004].

However, the PBRF site soils are not considered characteristic of native-undisturbed soils in the site vicinity. A series of major disturbances have occurred dating back to the 1940s.

9 Information sources for the site history include construction drawings and photos, PBRF operating cycle reports, PBRF annual reports, memoranda and other historical files maintained by PBRF Document Control.

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Construction of the PBOW involved extensive excavation to construct the ordinance production lines and process waste water retention basins. As a result of PBOW operations from 1942 - 1945, the PBRF site was extensively contaminated with chemicals used in the manufacture of Pentolite.10 A site cleanup campaign was mounted prior to PBRF construction

[Bowles 2006]. During this cleanup, unknown quantities of soil were reportedly removed from the site and fill material was likely brought in from off-site [USACE 2004]. And, as described in the previous section, construction of the PBRF involved extensive excavation and backfilling on the 27 acre site.

2.4 Site Soil Characterization Site soil characterization results are summarized to identify areas requiring remediation (excavation) and to present radionuclide profiles of radiological constituents of PBRF origin.

Radiological characterization of PBRF soils has been performed on several occasions after the facility shutdown in 1973. The initial post-shutdown characterization survey performed in 1985 (reported in 1987) by Teledyne Isotopes, Inc. included sampling and analysis of site soils [Tele 1987]. In 1998, GTS Duratek performed a characterization survey to confirm the 1985 Teledyne results and to provide additional data on isotopic composition of contamination. From these studies, it was concluded that the ERB, the Pentolite Ditch, the CRBs and several localized areas required remediation.11 In 2004, a comprehensive characterization survey of the site was performed by the decommissioning contractor to identify contaminated soil areas and develop radionuclide profiles to guide remediation efforts. The area inside the PBRF site was divided into 11 survey units. Two areas outside the site fence that were known to be contaminated were also characterized; an area east of the WEMS and the Pentolite Ditch. Altogether, 610 surface and 1,043 subsurface soil samples were collected and analyzed by gamma spectroscopy [MWH 2005]. Selected samples were sent to vendor laboratories for analysis of non-gamma emitters.

Remedial action levels (RALs) to guide decommissioning planning were set at 50% of DCGLs published in the FSS Plan [MWH 2005a]. On this basis and from results of characterization surveys described above, the following areas were identified as requiring remediation:

Emergency Retention Basin Cold Retention Basins Water Effluent Monitoring System Storm Drains and Catch Basins Waste Handling and Fan House Building sub-foundation (portions) 10 Pentolite is a 50/50 mixture of the explosives PETN and TNT. See for example: http://www.lookchem.com/Pentolite/.

11 It is noted that the Teledyne and GTS Duratek surveys were performed prior to the issuance of the current release criteria in 10CFR20 Subpart E and the supporting guidance on acceptable methods for characterization and final status surveys to demonstrate compliance. The 1985 and 1998 surveys relied heavily on gross activity analysis of material samples (including soil) and exposure rate measurements. These surveys identified locations of contaminated soil but did not provide information needed to determine nuclide profiles, DCGLs, and action levels for remediation and final status survey of site soils.

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Pentolite Ditch and Environs, identified as Areas of Concern (AOCs).

In addition, several discrete contaminated areas that resulted from spills were defined.

Subsequent to the 2004 characterization surveys, additional characterization was performed to further delineate these spill areas.12 The spill areas are summarized in Table 1 (they are also shown in Figure 2).

Table 1, Spill Area Summary Approximate Name Location Description Size (ft2) (1)

Contaminated concrete, asphalt and soil Along E half of PPH S area. Cs-137 up to 1.67 pCi/g & Co-60 Spill Area No. 1 25 wall up to 4.48 pCi/g (in soil 0 to 6 in depth).

Designated as a Co-60 area. (2)

Site of a 300 gallon liquid spill during N of Reactor Building transfer of contaminated water in 2005.

Spill Area No. 2 2000 near Catch Basin 4 Was remediated in 2005. Designated as a Co-60 area. (3)

Cs-137 up to 431 pCi/g & Co-60 up to E side of Hot Lab at Spill Area No. 3 1000 271 pCi/g (0 to 6 in depth).

Rollup Door Designated as a Co-60 area. (3)

Smaller of two distinct sub-areas Spill Area No. 4 identified as Spill area No. 4. Above S of WHB 22 (small area) scan RAL, but no soil samples > 0.5 x DCGL. (3)

W of Line 3 Rd Larger of two distinct sub-areas Spill Area No. 4 identified as Spill area No. 4. Scan approximately 100 ft. 2400 (main area) results > bkg., but below scan RAL; no S of WHB soil samples > 0.5 x DCGL. (3)

Spill Area No. 5 Above scan RAL, but no soil samples >

S of South CRB 600 0.5 x DCGL. (3)

Scan surveys in 2006 failed to detect levels above bkg., except in one very E of SEB & S of Spill Area No. 6 2500 localized area (~ 2ft2) just south of Sludge Basins catch basin CB-9A, which was > RAL.

(3)

Soil area contaminated from WEMS WEMS Spill E of WEMS outside overflow-flood events. Cs-137 up to 2500 Area Perimeter Fence 19.1 pCi/g & Co-60 up to 1.28 pCi/g (0 to 6 in depth). (4)

Table 1 Notes:

1. Approximate surface area of potentially impacted areas investigated.

2. Descriptive information and survey results from Survey Request SR-3.

3. Descriptive information and survey results from Survey Request SR-16 and personal communication, FSS supervisor.

4. Descriptive information and survey results from Survey Request SR-208.

12 Survey Request SR-3, Spill Area No.1 (January 2006) and SR-16, Spill Areas No.2 through No.6 (May 2006).

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Using characterization survey results, radionuclide profiles were developed for the areas that were identified as requiring remediation. These were published in a technical basis document to establish radionuclide mixtures and DCGLs for FSS of the site soils [PBRF 2009]. The site and impacted adjacent environmental areas were divided into groups with similar radionuclide profiles. Activity fractions of the principal radionuclides, Cs-137, Co-60 and Sr-90 were established for each group. The results are shown in Table 2.13 Table 2, Principal Radionuclides and Activity Fractions for Site Soils Activity Fractions Location Cs-137 Co-60 Sr-90 Default for PBRF site and Spill Areas 4, 5 & 0.912 0.007 0.081 6.

Spill Areas 1, 2 & 3 0.201 0.714 0.085 Environs Outside 0.878 0.037 0.085 Perimeter Fence Pentolite Ditch and 0.969 0.014 0.017 Environs 2.5 Sources of Excavated Materials Principal areas requiring excavation are identified in the preceding section. During PBRF decommissioning, soil was excavated from these and several additional locations. Figure 2 shows the locations of excavations within and adjacent to the PBRF site. Exhibit 5 of Appendix A shows the areas excavated in the Pentolite Ditch and adjacent dredge spoil areas, identified as areas of concern (AOC).

Several areas, outside the 27 acre PBRF site, were impacted by radioactive materials from PBRF operations and decommissioning activities. The Pentolite Ditch, which received liquid effluents from the PBRF, and surrounding land areas, were remediated by excavation and the impacted areas subjected to FSS after remediation. An area adjacent to the site boundary east of the WEMS was found to contain contaminated soil (from overflow during severe storms in the PBRF operations period). Small volumes of contaminated sediment were removed from the Plum Brook downstream of the Pentolite Ditch in 2010.

The sources of excavated material generated during PBRF remediation activities are summarized below. The FSS of surfaces exposed by excavation are not described here, but are covered in the FSS reports for each affected land area or structure.

13 Other radionuclides have been measured in PBRF characterization soil samples. In the FSS Plan, soil DCGLs were published for eight radionuclides (Co-60, Cs-137, Sr-90, Eu-152, Eu-154, Fe-55, Ni-69 and Ni-63). The dose to the Resident Farmer from radionuclides other than the principal three was calculated to be only 0.5 mrem/y. Hence, as this dose is well below the NRC 10% criterion, these radionuclides are considered insignificant.

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Emergency Retention Basin During 2005, approximately 3,400 tons of soil were excavated from the ERB and shipped for disposal as radwaste by the decommissioning contractor.14 In late 2009, demolition of the ERB was completed. This consisted of removal of standing water, removal of cover and miscellaneous debris, removal of concrete block walls and excavation of potentially contaminated soils. This work was performed under PBRF Work Execution Package, PBRF-WEP-09-025.15 This included excavation of approximately 6 in. of soil from the basin floor and excavation of the entire surrounding berm.

Pentolite Ditch In 2005, 1600 tons were excavated from the Pentolite Ditch and surrounding areas and shipped as radwaste.14 In 2009, remediation of the Pentolite Ditch and adjacent AOCs were completed. This work was performed under PBRF Work Execution Package, PBRF-WEP 003. See Exhibit 6 in Appendix A for a photo of Pentolite Ditch excavation in progress.

Approximately 35,500 tons of soil were removed and staged for FSS. 16 Cold Retention Basins The Cold Retention Basins were removed in 2009. After the CRB structures and concrete basins were demolished and removed, potentially contaminated gravel and soil was removed from the basin cavities and perimeters. See Exhibit 7 in Appendix A for a photo of CRB excavation. This work was performed under PBRF-WEP-09-006.

Miscellaneous Structures and Pads (including the WEMS)

Approximately 50 miscellaneous structures (foundations, basins, pits and trenches) and equipment pads were removed during PBRF decommissioning. These included equipment pads, sidewalks, building roll-up door aprons, pipe trenches, and large structures such as the WEMS. A detailed listing is provided in PBRF-WEP-09-15, which covered removal of most of these items. Some of these structures were removed or demolished under WEP-09-20. Pads on grade were removed and concrete structures that extended below grade were removed to at least 3 ft. below grade. Many of these structures and pads were either confirmed or potentially impacted by radiological contamination and the adjacent and underlying soil was excavated for evaluation and FSS.

14 Weights of soil shipped as radwaste from the ERB and Pentolite Ditch during 2005 are obtained from PBRF Decommissioning Project waste shipment records.

15 The FSS of the ERB is reported in Attachment 10 of the PBRF Final Status Survey Report.

16 The FSS of the Pentolite Ditch is reported in Attachment 4 of the PBRF Final Status Survey Report.

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Storm Drains and Catch Basins In 2010 and early 2011, potentially contaminated soil was excavated while removing approximately 7700 feet of contaminated storm sewer piping and the associated catch basins.

This work was performed under PBRF Work Execution Packages, PBRF-WEP-09-020 and PBRF-WEP-09-027. A detailed description of this work is provided in Attachment 7 of the FSS Report.

HRA Underground Storage Tanks Excavation of potentially contaminated soil required to remove underground storage tanks adjacent to the HRA was performed in 2010. This work was performed under PBRF Work Execution Package, PBRF-WEP-09-010.

WHB and Fan House Sub-foundations Excavation of the WHB Evaporator Pit and the Fan House Resin Pit was performed in 2010.

In addition to removal of the concrete pit structures, potentially contaminated soil adjacent to and beneath the pits was removed. This work was performed under PBRF Work Execution Packages, PBRF-WEP-09-010 and PBRF-WEP-09-020. See Exhibit 8 in Appendix A for a photo of the WHB evaporator pit excavation.

Spill Areas Remediation of the designated spill areas was performed under several Work Execution Packages. Spill Areas No. 1 and No. 3 and the WEMS Spill Area were excavated under WEP-09-009. Spill area No. 2 was remediated in 2005. Any remnants of this spill area were excavated in 2009-10 as part of the storm drain system dismantlement under PBRF-WEP 20. Spill Area No. 4 was also excavated as part of the Storm Drain system dismantlement. A contaminated soil area located just south of the south CRB identified as Spill Area 5 was excavated as part of the CRB excavation under PBRF-WEP-09-006.

Building Demolition Several buildings have been demolished as of late 2011 during PBRF decommissioning. The Fan house (Building 1132), Waste Handling Building (Building 1133) and Hot Retention Area structure (Building 1155) were demolished under PBRF-WEP-09-017. The Service Equipment Building (SEB) and the Reactor Office and Laboratory Building (ROLB) were demolished under PBRF-WEP-10-005 and 10-006, respectively. These demolitions included excavation of some adjacent soil to gain access to contaminated sub-surface structures. Also, overburden soil was excavated from the Cold Pipe Tunnel (CPT) as part of the SEB demolition and from the underground Calibration Facility as part of the ROLB demolition.

Exhibit 9, of Appendix A shows a view of the HRA after the overburden has been excavated prior to the structure demolition.

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Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Plum Brook As previously reported, radioactive material of PBRF origin, mostly Cs-137 and lesser quantities of Co-60 were measured in the Plum Brook downstream of the Pentolite Ditch in 2005. Comprehensive characterization surveys of the Plum Brook were subsequently performed. These surveys identified scattered- localized areas of contamination in excess of the PBRF site Cs-137 DCGL (14.7 pCi/g in soil) in the stream bed and banks [PBRF 2009d, PBRF 2010]. Most of these occurrences were found between the Pentolite Ditch and the Plum Brook Country Club, a distance of about 2 miles. Approximately 20 localized areas where concentrations above the Cs-137 DCGL were measured were remediated by hand excavation.

This task was performed under PBRF-WEP-10-007 [PBRF 2010a]. Approximately 15 tons of sediment and soil were removed and transported in 55 gallon drums to the PBRF for disposal as radwaste.

Impacted Utilities Several underground utilities that traversed impacted soil areas were removed during 2009 and 2010. This included:

excavation and removal of approximately 1300 ft. of sanitary sewer piping, removal of underground process piping from the CRB Valve Pit to the Fan House (including the HRA pump-out line),

removal of resin/valve pit adjacent to (south of) the PPH and associated drain lines and removal of approximately 630 ft of miscellaneous piping in the vicinity of, and between the Fan House and the PPH, including the PPH resin pits. This work was performed under PBRF-WEP-09-007.

RCRA Soil Area Soil potentially contaminated with volatile organic compounds (VOCs) was excavated during removal of approximately 60 ft. of storm drains, two catch basins and an abandoned water monitoring well located immediately south of the former SEB. This action was performed in accordance with the NASA Plum Brook groundwater remediation plan [SAIC 2010]. The plan called for removal of the subject storm drain piping, catch basins, former monitoring well and associated overburden and impacted soil as potential sources of groundwater contamination. This work was controlled under PBRF-WEP-09-027. Approximately 2000 tons of soil were excavated and evaluated for radioactivity and VOCs. The soil was surveyed for radioactivity and found to be acceptable for free release under PBRF Radiation Protection Procedure, RP-08 (no detectable activity). Seven 55-gallon drums of VOC contaminated liquid/sludge were removed from the catch basins, sampled and evaluated. They were classified as hazardous waste and shipped offsite for disposal at a licensed disposal facility

[SAIC 2010].

Decommissioning Temporary use Material This material consisted mostly of gravel and ballast that was trucked in for temporary use during PBRF decommissioning. It included base material for staging excavated soil and soil 11

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 stockpiles, temporary fill, for example ERB repair (PBRF-WEP-09-005) and access ramp for CRB excavation (PBRF-WEP-09-006), haul roads and temporary Storm Drain excavation over-crossing roads. Approximately 620 truckloads (22 tons ea.) of gravel for temporary use were delivered to the PBRF site in 2008 through 2011. When no longer needed, this material was excavated and staged for FSS. The FSS of most of this material was performed by placement in lifts for manual surveys.

Figure 2, PBRF Site Showing Excavated Areas 12

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 3.0 Handling and Processing of Excavated Materials This section describes handling and processing of excavated materials, including separation of soil from other materials, initial radiological screening and staging for FSS. The two methods for FSS of excavated soil are described.

3.1 Process Overview As noted previously, contaminated soil areas were remediated by excavation in two distinct campaigns: 2004 - 2005 and 2008 - 2011. In the initial campaign, most of the excavated soil, approximately 5,000 tons excavated from the Pentolite Ditch and the ERB was shipped for offsite disposal as radioactive waste - no FSS of excavated soil was performed. What follows is a description of excavated soil processing and FSS during 2009 - 2011. In this period, the majority of soil excavated during the PBRF decommissioning was processed.

Management of excavated soil and materials was implemented via a system of soil stockpiles.

This was a key element of the overall soil handling and survey process. The stockpile arrangement is shown in Figure 3. It is depicted as operated during the most active period (2009 and 2010). A photograph of the main soil staging stockpile area is shown in Exhibit 10 of Appendix A. This material was controlled under PBRF Radiological Control and FSS procedures to control contaminated stockpiles as radioactive material and to prevent contamination of designated clean stockpiles.

A flow diagram of the process for handling of excavated soil is shown in Figure 4.17 It shows the principal steps from excavation to FSS and ultimate disposition as radwaste or use as backfill. The entire process was controlled by applicable work, safety and radiological control procedures. Typically, the first step in the process was to perform a walkover Gamma scan survey of the designated area prior to excavation. From the results of the pre-excavation scan surveys, material disposition was as follows:

1. Material determined to be above the action level for offsite disposal (> DCGL) was, transported directly to an above criterion radwaste stockpile and staged for disposal as radioactive waste - no FSS of this material was performed.18

2. Material determined to be below the RAL was transported to an overburden stockpile.

3. Material above the RAL and below the DCGL was transported to a contaminated stockpile.

All material in the overburden and contaminated stockpiles was designated as feed material for FSS. Two principal methods were used for performing FSS of excavated soil. Most of the 17 It is noted that variations on the process may occur and certain details are not shown in Figure 3.

18 In the pre-excavation surveys, the action level for determining off-site disposal was set at the most conservative DCGL. In most areas, scan walkover surveys were performed with 2x2 in. NaI detectors with scaler-rate meters set to record counts in an energy window corresponding to the Cs-137 (Ba-137) 0.661 Mev gamma. For this setup, the default, most conservative surrogate DCGL for Cs-137, 10.3 pCi/g corresponds to 700 net cpm (RWP No. PB-1-005, 12/22/09).

13

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 excavated soil material generated during 2008-2009 was processed and surveyed using a conveyor survey-sorting system. This system is identified as the Orion ScanSort System

[Lopez 2010]. It is described in Section 3.2 below. After the system was demobilized in August 2010, excavated soil and gravel was placed on standard lifts, 6 inches thick and surveyed by manual walkover scan survey and sampling.

Figure 3, Soil Staging and Processing Areas 14

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Figure 4, Excavated Soil Process Flow Chart Walk-Over Scan Survey of Area to be Excavated

> DCGL < RAL Scan Result ?

> RAL & < DCGL Excavate & Transport Excavate & Transport to to Overburden Radwaste Stockpile Excavate & Transport to Stockpile Contaminated Stockpile Stage Material for FSS Conveyor Manual Survey Method ?

Remove Rocks &

Screen to Remove Debris & Place in Rocks & Debris Lifts for Survey Screened-out Material Conveyor Soil Scan Manual Scan Assay Survey No < Scan Action Level?

Yes Collect and Analyze Samples No Meets Release Yes Criteria?

Radwaste Stockpile Backfill Stockpile Package & Ship for Backfill After FSS LLW Disposal of Excavated Areas 15

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 3.2 Survey and Sorting with Conveyor System Because large volumes of soil were expected from PBRF site remediation, NASA requested that the decommissioning contractor provide an automated soil survey sorter system for FSS of excavated soil. Mactec Development Corp. was contracted to provide this service.

The ScanSort conveyor system layout as operated at the PBRF is shown in Figure 5. Material was delivered from the feed stockpiles by heavy equipment, such as front-end loaders or excavators, to a screener for removal of large debris (> 4 in.). Material which passed through the screener was fed into a rotating drum-trommel which further screened the feed material (with a 2.5 in. screen) and delivered a steady stream to the first conveyor section. Material rejected by screening equipment was staged in stockpiles designated for disposal as radwaste.

A photograph of the conveyor system in operation is shown in Exhibit 11 of Appendix A.

Screened feed material proceeded to Conveyor No. two where it passed under the detector system. This assembly consisted of two large NaI gamma scintillation detectors (4 x 4 x 16 in.) coupled to a gamma spectroscopy system. The soil passing beneath was scanned by the detectors, which were calibrated to measure the Cs-137 activity concentration in the soil

[Lopez 2010]. This in effect, implemented the FSS Plan scan survey requirement for the soil.

Conveyor No.3, a reversing conveyor, was located immediately downstream of the detection conveyor. It directed the flow of material passing beneath the detectors to the appropriate discharge conveyor. The reversing conveyor is shown in Exhibit 12 of Appendix A. The diversion control set point (DCS), was set at a count rate equivalent to 5.2 pCi/g, one-half of the DCGL (10.3 pCi/g, surrogate DCGL for soils where Cs-137 predominates). 19 Soil determined to be below the DCS was directed by Conveyor 3 to the clean discharge path via conveyors 5 and 6 to stacking conveyor No. 7. The clean discharge stacking conveyor is shown in Exhibit 13 of Appendix A. The photograph shows the system delivering soil to the clean discharge stockpile area.

When soil that exceeded the DCS was detected, the conveyor control system reversed the direction of conveyor No. 3, the sorting conveyor, and the material was directed to conveyor No.4, for discharge to the above criteria soil pile. There the material was staged for radwaste shipment. The above criteria discharge Conveyor No. 4 extends from the left in the Exhibit 12 photo.

To meet the FSS Plan requirement for collection and analysis of systematic samples from each soil survey unit, samples were collected from the ScanSort clean discharge conveyor.

One liter grab samples were manually collected by a qualified FSS technician from the clean discharge conveyor at regular intervals to ensure that a minimum of 15 samples were collected per 500 tons of clean discharge soil.20 The clean discharge soil was delivered to 19 The 10.3 pCi/g criterion value is the most conservative Cs-137 surrogate DCGL calculated for soil [PBRF 2009]. Also see additional discussion of DCS implementation in Section 4.1 and 4.4.

20 Systematic FSS samples were collected under instructions in SR-152, Soil System Process Area, Approved 7/21/09, Closed 11/1/10.

16

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 individual 500 ton piles by the stacking conveyor. The piles were identified as numbered batches, each equivalent to a Class 1 soil survey unit; 211 batches in all. The one liter grab samples were analyzed by gamma spectroscopy at the PBRF on-site counting laboratory.

Clean discharge piles were maintained with FSS isolation controls until all the FSS systematic sample concentrations were confirmed below applicable DCGLs and verification surveys were performed on selected clean discharge piles (under SR-171). The verification survey of selected piles included gamma scans and samples collected for gamma spectroscopy analysis by the PBRF on-site counting laboratory.21 After successful completion of the verification surveys, individual piles were moved to a large clean material stockpile for use as backfill in excavated areas on the site.

An additional detector system, called the auxiliary detector system was added to the ScanSort conveyor system to meet the FSS Plan requirement for replicate QC scan of a minimum of 5% of scanned soil. This system, configured and calibrated to the same specifications as the primary detector setup, was installed above conveyor No. 6 (refer to Figure 5). It assayed all below criterion soil from batch 139 through 211, about 34,300 tons. The auxiliary system did not identify any soil above the diversion control set point of 5.2 pCi/g [Lopez 2011].

The ScanSort system was operated from August 2009 to August 2010, with two pauses (11/2 to 12/7/2009 and 4/15 to 7/5/2010) to allow for excavation to replenish feed material stockpiles. Altogether slightly over 97,000 tons of soil was processed by the ScanSort system.

Over 99% of the material assayed was below the 5.2 pCi/g DCS.

Figure 5, Schematic of Mactec Orion ScanSort Conveyor N

Line 2 Road 21 The verification surveys were conducted under instructions in SR-171, Perform Verification Surveys of the Soil Segregated to the Clean Stockpile Area by the Mactec SS-Series Conveyorized Soil Sorting System, Approved 8/4/09, Closed 9/13/10.

17

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 3.3 Survey of Material in Lifts Following demobilization of the Orion ScanSort system in August 2010, remaining stockpiled contaminated soil and soil excavated subsequently were surveyed to meet FSS plan requirements by placement on lifts. A controlled area was established west of Line 2 Road for this purpose. Two standardized areas, each 859 m2, were constructed in a paved parking area located behind the project mobile office units. These are shown in Figure 4 as walkover survey areas. Soil to be surveyed was placed in 6 in. thick lifts, graded and leveled. Exhibit 14 of Appendix A shows soil placement in a lift. Exhibit 15 of Appendix A shows the walkover scan survey of a lift in progress. Following successful completion of the FSS for each lift, soil was removed and placed on a clean stockpile for use as backfill. The lift method for FSS was utilized from August 2009, after demobilization of the Mactec ScanSort system, until completion of excavated soil FSS in 2011.

3.4 Post-FSS Handling and Disposition Materials that were subjected to FSS (by the soil sorter conveyor system and by the lift method) were staged according to their FSS outcome. Materials which satisfied the FSS Plan criteria for release were staged in stockpile areas designated for clean material. Clean material stockpiles included material determined to be clean via FSS, excavated material found to be below the RAL and clean backfill material brought in from offsite. Stockpiled clean material has been used for backfill of excavated areas which have successfully completed FSS. The remaining unused material is stockpiled in isolated-controlled clean areas for use in site restoration. See Exhibit 16 of Appendix A for a photo of backfilling an excavated storm drain trench. Exhibit 17 shows a view of the backfilled former ROLB site.

Material staged for offsite disposal as radioactive waste included:

excavated material found to be above the DCGL in the pre-excavation survey, oversized material screened and ejected from feed material to the ScanSort and material that failed FSS.22 This material was staged in areas controlled as radioactive material areas.

4.0 Survey Design and Implementation This section describes the basic FSS plan requirements for survey design and implementation. This includes DCGLs, determining number of samples, scan coverage and investigation levels and elevated measurement comparison. It describes how these requirements were implemented for survey of excavated material. This is followed by a discussion of instrument scan sensitivities and laboratory sample analysis detection sensitivities (MDAs) to meet FSS Plan requirements.

22 Some of the oversized material was surveyed and released under the PBRF Radiological Control Procedure RP-008, Radiological Release of Equipment, Material and Vehicles.

18

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 4.1 Basic FSS Plan Requirements The DCGLs for individual radionuclides in soil were calculated using RESRAD Version 6.21 for a resident farmer occupancy scenario. The DCGL calculations are described in the FSSP, Attachment B. The DCGL values from the FSSP for the three significant PBRF radionuclides are given in Table 3. These DCGL values are also applied to subsurface soil and to soil-like excavated materials such as sediment and soil-sand-gravel mixtures.

Table 3, Single Radionuclide DCGL Values for Soil DCGL Radionuclide (pCi/g)

Co-60 3.8 Sr-90 5.4 Cs-137 14.7 For application to FSS of soil at PBRF, surrogate DCGLs are used to determine scan sensitivities, action levels and sample analysis MDA requirements. They are calculated from the single nuclide soil DCGLs using radionuclide mixtures established for the various outdoor land areas shown in Table 2 as described in the technical basis document on radionuclide distributions and DCGLs for site soils [PBRF 2009]. The following equation from the FSS Plan, Section 3.2.1 is used:

1 DCGL (Equation 1)

SUR 1 R2 R3 Rn DCGL 1 DCGL 2 DCGL 3 DCGL n Where: DCGLSUR = Surrogate radionuclide DCGL, DCGL1 = DCGL for the radionuclide to be used as the surrogate for the other radionuclides, DCGL2, 3n = DCGL for radionuclides to be represented by the surrogate and Rn = Ratio of concentration (or nuclide mixture fraction) of radionuclide n to surrogate radionuclide.

The surrogate DCGLs for soil FSS scans of the various outdoor open land areas are shown in Table 4. For most of the excavated soil FSS, where Cs-137 is the predominate radionuclide, the most limiting DCGLSUR value, 10.3 pCi/g, is used as the basis for scan survey investigation and action levels. For soil from areas identified as Co-60 areas, the DCGLSUR value, 3.28 pCi/g, is used as the basis for scan survey investigation and action levels.

19

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 4, Surrogate DCGLs for Soil FSS Scan Survey Activity Fractions Surrogate DCGLSUR Location Cs-137 Co-60 Sr-90 Radionuclide (pCi/g)

Default for PBRF site and 0.912 0.007 0.081 Cs-137 11.55 Spill Areas 4, 5 & 6.

Spill Areas 1, 2 & 3 0.201 0.714 0.085 Co-60 3.28 ERB & Environs Outside 0.878 0.037 0.085 Cs-137 10.31 Perimeter Fence Pentolite Ditch and 0.969 0.014 0.017 Cs-137 13.34 Environs Survey designs incorporate requirements for scan coverage and investigation levels derived from the MARSSIM classification of survey units. The values listed in the FSS Plan applicable to soils are shown in Table 5.

Table 5, Class-Based Survey Scan Coverage and Action Level Requirements Static Measurement Scan Survey Scan Investigation Classification or Sample Result Coverage Levels (1) (2)

Investigation Levels Class 1 100% >DCGLEMC >DCGLEMC Class 2 10 to 100%

>DCGLW or >MDCscan

>DCGLW if MDCscan is >DCGLW Class 3 Minimum of 10%

>DCGLW or >MDCscan 50% of the DCGLW if MDCscan is >DCGLW Table 5 Notes:

1. The scan investigation levels shown above are as listed in the FSS Plan. However, the scan investigation level was set below the DCGLW for Class 1 soil survey units, as discussed below.

2. An investigation level per se, does not apply to the soil passing through the ScanSort system. However, in effect the system identifies soil that is above the DCS. The ScanSort Diversion Control Set Points in conjunction with two NaI detectors and associated electronics were operated to meet the following criteria:

a. Allow soil that is below the 5.2 pCi/g Cs-137 Remedial Action Level to pass through to the clean discharge conveyor, but diverting volumes above the RAL.

b. Divert small volumes of soil having a mass of 175 lb. or more that exceed the 10.3 pCi/g DCGL.

4.2 Survey Units and Classification for FSS All excavated material subjected to FSS was classified as MARSSIM Class 1. Survey units were established for FSS of excavated soil such that the amount of material in each survey unit was less than the amount of material in the 0 to 6 in. depth of an area that meets MARSSIM guidance for open land Class 1 survey units, less than 2,000 m2. Survey units were established for material processed through the ScanSort system that was discharged through the clean discharge conveyor. This material was subjected to FSS sampling under 20

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 SR-152, as described in Section 3.2. 23 The material was divided into nominal 500 ton batches staged in piles for verification scan surveys and sampling under SR-171, following the in-process FSS sampling of the ScanSort clean discharge. A total of 211 batches (survey units) were thus processed. The survey units are not individually listed here as their descriptions are identical.

As described in Section 3.3 above, the FSS of excavated soil that was not processed by the ScanSort system (or shipped as radwaste) was performed in standardized lifts of 859 m2. A survey unit was established for each filled lift and surveyed as a Class 1 survey unit. Each lift survey unit was subjected to 100 % surface gamma scan and soil sampling as directed by a specific survey design and survey instructions. Samples were analyzed by gamma spectroscopy at the PBRF on-site laboratory. Approximately 9500 tons of soil comprising 41 survey units was processed for FSS using this method. The individual lift soil survey units are listed in Table 6. Table 6 includes four land area (surface soil) survey units that were established where the soil was stockpiled for the lift surveys.

Table 6, Survey Unit Listing for Soil Lifts Survey Survey Survey Description (1) (2)

Unit ID Design Request OL-5-1 55 283 Soils Lift Station - Lift #1 OL-5-2 55 283 Soils Lift Station - Lift #2 OL-5-3 55 283 Soils Lift Station - Lift #3 OL-5-4 55 283 Soils Lift Station - Lift #4 OL-5-5 55 283 Soils Lift Station - Lift #5 OL-5-6 55 283 Soils Lift Station - Lift #6 OL-5-7 55 283 Soils Lift Station - Lift #7 OL-5-8 55 283 Soils Lift Station - Lift #8 OL-5-9 57 286 Soils Lift Station - Lift #9 (3)

OL-5-10 55 283/290 Soils Lift Station - Lift #10 OL-5-11 57 283/290 Soils Lift Station - Lift #11(3)

OL-5-12 55 283/290 Soils Lift Station - Lift #12 OL-5-13 55 283/290 Soils Lift Station - Lift #13 OL-5-14 55 283/290 Soils Lift Station - Lift #14 OL-5-15 55 283/290 Soils Lift Station - Lift #15 OL-5-16 55 283/290 Soils Lift Station - Lift #16 OL-5-17 55 283/290 Soils Lift Station - Lift #17 OL-5-18 55 283/290 Soils Lift Station - Lift #18 OL-5-19 55 283/290 Soils Lift Station - Lift #19 OL-5-20 55 283/290 Soils Lift Station - Lift #20 OL-5-21 55 283/290 Soils Lift Station - Lift #21 OL-5-22 55 283/290 Soils Lift Station - Lift #22 OL-5-23 55 283/290 Soils Lift Station - Lift #23 OL-5-24 55 283/290 Soils Lift Station - Lift #24 23 The amount of material in a 500 ton pile of soil spread evenly on the ground 6 inches thick would cover an area of approximately 2000 m2, assuming a density of about 100 lb/ft3 (1.6 g/cm3).

21

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 6, Survey Unit Listing for Soil Lifts Survey Survey Survey Description (1) (2)

Unit ID Design Request OL-5-25 55 283/290 Soils Lift Station - Lift #25 OL-5-26 55 283/290 Soils Lift Station - Lift #26 OL-5-27 55 283/290 Soils Lift Station - Lift #27 OL-5-28 55 283/290 Soils Lift Station - Lift #28 OL-5-29 55 283/290 Soils Lift Station - Lift #29 (3)

OL-5-30 55 283/290 Soils Lift Station - Lift #30 OL-5-31 55 283/290 Soils Lift Station - Lift #31 OL-5-32 55 283/290 Soils Lift Station - Lift #32 OL-5-33 55 283/290 Soils Lift Station - Lift #33 OL-5-34 55 283/290 Soils Lift Station - Lift #34 OL-5-35 55 283/290 Soils Lift Station - Lift #35 OL-5-36 55 283/290 Soils Lift Station - Lift #36 OL-5-37 55 283/290 Soils Lift Station - Lift #37 OL-5-38 55 283/290 Soils Lift Station - Lift #38 OL-5-39 55 283/290 Soils Lift Station - Lift #39 OL-5-40 55 283/290 Soils Lift Station - Lift #40 OL-5-41 55 283/290 Soils Lift Station - Lift #41 OL-5-42 55 283/290 Area South of Lift Station - Section #1 OL-5-43 55 283/290 Area South of Lift Station - Section #2 OL-5-44 55 283/290 Area South of Lift Station - Section #3 OL-5-45 55 283/290 Area South of Lift Station - Section #4 Table 6 Notes:

1. All survey units are Class 1.

2. The area of each lift is 859 m2.

3. These lifts are comprised of soil from spill areas where Co-60 was the predominant radionuclide.

4.3 Number of Measurements and Samples The number of measurements and samples for each survey unit established for the soil lifts were determined using the MARSSIM statistical hypothesis testing framework as outlined in the FSS Plan. The Sign Test is selected because background soil concentrations of the principal radionuclides are a small fraction of the applicable DCGLW.24 Decision error probabilities for the Sign Test are set at = 0.05 (Type I error) and = 0.10 (Type II error) in accordance with the FSSP.

24 Average soil/sediment concentration of Cs-137 measured in background areas near the PBRF in 2005 was 0.14 +/- 0.05 pCi/g (one std. dev.) [PBRF 2011]. The Sr-90 concentration in northern hemisphere surface soil is reported as most levels fall between 0.05 and 0.5 pCi/g, with 0.1 pCi/g as a general average [ANL 2006].

22

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 The Visual Sample Plan (VSP) software was used to determine the number of FSS samples.25 When the Sign Test is selected, the VSP software uses MARSSIM Equation 5-2 to calculate the number of measurements. Equation 5-2 is shown below:

Z 1 Z 1 2

N 1.2 2 (Equation 2) 4 0.5 Where:

1.2 = adjustment factor to add 20% to the calculated number of samples, per a MARSSIM requirement to provide a margin for measurement sufficiency, N = Number of measurements or samples,

= the type I error probability,

the type II error probability, Z1- = proportion of standard normal distribution < 1 - (1.6449 for

0.05),

Z1- = proportion of standard normal distribution < 1 - (1.2816 for = 0.1),

(/) = value of cumulative standard normal distribution over the interval -

, /,

= the relative shift, defined as the DCGL - the Lower Bound of the Gray Region (LBGR), and

= the standard deviation of residual contamination in the area to be surveyed (or a similar area).

The MARSSIM module of VSP requires user inputs for the following parameters: , ,

LBGR, the DCGLW and . The numbers of measurements were calculated for the soil lift survey units using the parameters established in two survey designs. Table 7 summarizes the survey design calculations and lists the values of the key VSP input parameters.

Table 7, Summary of Survey Designs for Soil Lifts Design DCGL LBGR Survey Units Class N No. (1) (2) (3) (2) (4)

Soil lifts (all except 55 1 11.4 5.7 5.7 2.28 2.5 11 those in Design 57) 57 Co-60 Soil Lifts 1 3.5 1.75 1.75 0.7 2.5 11 Table 7 Notes:

1. The data reported in the table is from the Survey Designs listed. They are maintained in the PBRF Document Control System.

25 The FSS Plan (Section 5.2.4) states that a qualified software product, such as Visual Sample Plan© [PNL 2010], may be used in the survey design process.

23

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0

2. Units are pCi/g.

3. Surrogate DCGL for the predominant radionuclide, used to evaluate soil samples. It is adjusted (reduced) for allocation of 0.5 mrem dose contribution from insignificant radionuclides.

4. The LBGR was set at 50% of the DCGL in both designs.

Selection of design input parameters followed guidance in the FSS Plan. The Plan states that the LBGR is initially set at 0.5 times the DCGLW, but may be adjusted to obtain a value for the relative shift (/) between 1 and 3. It is seen in Table 7 that a relative shift value of 2.5 was used in the final calculations for determining N.

The VSP software automatically performs an analysis to examine the sensitivity of the number of samples, N, to critical input parameter values. The following is obtained from the VSP report for survey unit OL-5-1 (with modifications). The sensitivity of N was explored by varying the following parameters: standard deviation, lower bound of gray region (as % of DCGL), beta, probability of mistakenly concluding that the survey unit mean concentration,

, is greater than the DCGL and alpha, probability of mistakenly concluding that the survey unit mean concentration, , is less than the DCGL.

Table 8 summarizes this analysis.26 The region of most interest in the table is for = 0.05 (required to be fixed), = 0.10 (may be adjusted) and the LBGR at 50% to 60% of the DCGL.

The sensitivity of N to expected measurement variability is examined first. With the LBGR set to 60%, doubling increases N from 12 to 23. At this LBGR value, N is sensitive to measurement variability. With the LBGR set to 50% of the DCGL, doubling increases N from 11 to 17. This shows that the number of measurements is moderately sensitive to measurement variability at LBGR values near 50% of the DCGL, as used in the soil lift FSS designs.

The sensitivity of N to the value of , the probability of an incorrect conclusion that the survey unit will pass (regulators risk) is low. With the LBGR set at 50% of the DCGL, and increasing from 0.05 to 0.10 and 0.15 while holding constant at 0.10, shows that the number of measurements is 11 or fewer in all cases. These results show that N = 11 represents a reasonable number of measurements for FSS of the soil lifts, in view of parameter values applied to the designs.

26 In this case, the VSP sensitivity analysis was modified to set the LBGR range from 50% to 70% of the DCGL to evaluate the sensitivity of N to changes of key parameters in the region of / values near 2.5. This is necessitated by the relatively large estimated value of used in the soil lift FSS designs [PBRF 2011]. A retrospective analysis of the soil lift FSS sample results from Survey Units OL-5-1 through OL-5-21 shows that the Cs-137 variability () is only 0.26 pCi/g. From this, it is concluded that 11 samples provided high statistical power and indeed was a conservative design.

24

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 8, Sensitivity Analysis for Survey Unit OL-5-1 FSS Design Number of Samples DCGL= 11.4 (1) = 0.05 (2) = 0.10 = 0.15

= 2.28 (1) (3) = 4.56 = 2.28 = 4.56 = 2.28 = 4.56 LBGR=70% (1) (4) =0.05 18 44 14 35 12 29

=0.10 14 35 11 27 9 22

=0.15 12 29 9 22 7 18 LBGR=60% =0.05 15 28 12 23 10 19

=0.10 12 23 9 17 8 14

=0.15 10 19 8 14 6 12 LBGR=50% =0.05 14 21 11 17 9 14

=0.10 11 17 9 13 7 11

=0.15 9 14 7 11 6 9 Table 8 Notes:

1. Units of DCGL, and LBGR are pCi/g.

2. = alpha, probability of mistakenly concluding that µ < DCGL.

3. = Standard Deviation.

4. LBGR = Lower Bound of Gray Region (as % of DCGL).

5. = beta, probability of mistakenly concluding that > DCGL.

Visual Sample Plan was also used to determine the grid size, the random starting location coordinates (for Class 1 and 2 survey units) and to display the measurement locations on survey unit maps drawn to scale. Refer to Appendix B for location coordinate tables and scale VSP maps showing measurement locations for each soil lift survey unit.

The survey designs also specify scan survey coverage and action levels based on the MARSSIM classification listed in Table 5. If the scan sensitivity of the detectors used in Class 1 survey units is below the DCGLW, the number of measurements (or samples) in each survey unit is determined solely by the Sign Test. If the scan sensitivity is not below the DCGLW, the number of measurements is increased as determined by the Elevated Measurement Comparison (EMC). As discussed in the next section, the scan sensitivities of instruments used in the FSS of the excavated soil are below the DCGLW, and no increase in the number of measurements above the value calculated using the Sign Test was required.

To meet the FSS Plan requirement that soil samples be analyzed to demonstrate that the soil is below the DCGL, samples were collected from the clean discharge conveyor. This was accomplished by collection of grab samples approximately every 20 minutes at the discharge of Conveyor No. 6. At the normal conveyor processing rate, this corresponded to 15 samples per 500 ton batch. Considering each 500 ton batch to be equivalent to a survey unit, collection of 15 samples on a systematic basis represents a conservative sampling design compared to 11 samples established in the survey design of the soil lift survey units. Altogether 3404 samples were collected in this manner and analyzed by gamma spectroscopy by the PBRF on-site counting laboratory.

25

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 4.4 Instrumentation and Measurement Sensitivity This section discusses soil scan instrument sensitivities. In the FSS of excavated material, the scan survey is performed by two methods:

traditional-manual walkover scan surveys using 2x2 in. NaI detectors and the Mactec ScanSort system where the soil passing on a conveyor is scanned by stationary NaI detectors.

Scan sensitivities for detectors used for walkover gamma scans of soil are determined using the method referenced in the PBRF FSS Plan and described in NUREG-1507 [NRC 1998].

Scan sensitivities for the Ludlum Model 44-10 NaI detectors used in FSS of soils at PBRF were developed in a technical basis document [PBRF 2009a]. The method is summarized and the key equations presented. The scan MDC is calculated using the following equations adapted from NUREG-1507 for walkover gamma scanning with NaI detectors:

d ' bi 60 (Equation 3)

MDCRsurv p i MDCRsurv MDCscan (Equation 4)

Conv MS O where:

MDCsurv = the minimum detectable count rate in cpm that can be reliably detected by the surveyor, d = index of sensitivity, unitless (MARSSIM default value of 1.38 is assigned),

bi = background counts observed in the interval i, i = observation interval (s),

p = surveyor efficiency, unitless (MARSSIM default value of 0.5 for walkover scans is assigned),

MDCscan = the scan MDC, here in units of pCi/g, Conv = instrument response conversion factor, units of cpm per µR/h and MSo = instrument response in units of µR/h per pCi/g (determined empirically or with a shielding algorithm).

Site-specific parameter values for the MDCscan equation are obtained from the technical basis document [PBRF 2009a]. Instrument response factors for Cs-137 and Co-60 respectively are 0.138 and 0.667 µR/h per pCi/g as calculated using the MicroShield code. The most conservative instrument response conversion factors measured for detectors in the PBRF LMI 44-10 inventory are 232.39 and 262.21 cpm per µR/h for Cs-137 and Co-60, respectively.

26

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Using these values, detection sensitivities of the instruments used in the FSS of the lift soil survey units are provided in Table 9. Minimum detectable count rates and MDCscan values for 44-10 detectors operated in Co-60 and Cs-137 windows vs. background count rates are shown in Table 9.

Table 9, Typical Detection Sensitivities of Field Instruments used for Lift Soil Scans LMI 44-10 with Co-60 Window (1) LMI 44-10 with Cs-137 Window (2)

Background MDCRsurveyor MDCscan Background MDCRsurveyor MDCscan (cpm) (ncpm) (pCi/g) (cpm) (ncpm) (pCi/g) 25 36 1.06 50 101 3.13 50 50 1.50 100 142 4.43 100 71 2.13 150 174 5.42 150 87 2.61 200 201 6.26 200 101 3.01 250 225 7.0 Table 9 Notes:

1. Ludlum Model 44-10 NaI detector with Model 2350-1 data logging scaler-rate meter setup to count in Co-60 energy window. Data from Survey Design No. 57. Scan speed = 0.25 m/s, detector to soil surface = 10 cm.

2. Ludlum Model 44-10 NaI detector with Model 2350-1 data logging scaler-rate meter setup to count in Cs-137 energy window. Data from Survey Design No. 55. Scan speed = 0.5 m/s, detector to soil surface = 10 cm.

The scan investigation level for Class 1 survey units listed in Table 5 is the DCGLEMC as specified in the FSS Plan, Section 8.1. However, the scan investigation level for the FSS of soil lifts is actually set at a fraction of the DCGLW established in the survey design to ensure that areas in excess of the DCGL are identified and investigated. It is also noted that the FSS Plan states that technicians are to respond to indications of increased count rates even though scan count rates may not be above the investigation level specified in survey instructions. 27 Accordingly, the scan investigation level for soil lift survey units where Co-60 predominates was set at 3 pCi/g, about 90 % of the 3.28 pCi/g DCGL for Co-60. In survey units where Cs-137 predominates, it was set at 7.7 pCi/g, or 75% of the 10.3 pCi/g DCGL for Cs-137.

For soil scanned by the Mactec ScanSort system, the scan sensitivity is fundamental to the diversion control set point (DCS). The DCS was set to meet two basic criteria:

1. Material that passes the conveyor system scan survey will have Cs-137 concentration less than or equal to the RAL of 5.2 pCi/g.

27 From FSS Plan Section 7.1.1: Technicians will respond to indications of elevated areas while surveying. Upon detecting an increase in visual or audible response, the technician will reduce the scan speed or pause and attempt to isolate the elevated area. If the elevated activity is verified to exceed the established investigation level, the area is bounded (e.g., marked and measured to obtain an estimated affected surface area). Representative static measurements are obtained as determined by the FSS/Characterization Engineer. The collected data is documented on a Radiological Survey Form.

27

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0

2. Volumes of soil of 175 lb., or greater, with Cs-137 concentrations above the DCGL of 10.3 pCi/g will be diverted to the above criteria stockpile.

Establishing the diversion control set point at the PBRF involved a field calibration to determine the count rate response vs. Cs-137 concentration in soil passing beneath the detector system. The ScanSort detector scan sensitivity was determined using the same conceptual model as for manual NaI scan surveys (per equations 3 and 4 above) with modifications.28 The ScanSort detection sensitivity and diversion control software setup were based on an empirical calibration using specially fabricated soil sources. The sources were constructed from PBRF site soil whose Cs-137 concentration was determined by gamma spectroscopy analysis at the PBRF on-site counting laboratory.29 The soil was well mixed and batches of calibration source (also called reference standard) material containing three levels of Cs-137 activity concentration were created:

Low activity standard: average concentration 4.93 +/- 0.35 pCi/g Medium activity standard: average concentration 10.54 +/- 0.54 pCi/g High activity standard: average concentration 83.92 +/- 2.52 pCi/g (all uncertainties are 2-sigma total analytical uncertainty).

The soil reference standard material was loaded into durable bags nominally 40 lbs each. Up to 10 bags of each activity level were prepared. Ten bags placed on the conveyor, simulated a 10 foot length of contaminated soil. The detector response, net counts in the Cs-137 spectrum region of interest (ROI), was accumulated for calibration runs using the low, medium and high activity reference standard material. The calibration factor, determined from a linear fit of the counting data, was 14.91 net cps per pCi/g. The ScanSort MDA for soil passing the detector at the typical belt speed of 45 cm/sec was determined to be 0.48 pCi/g at nominal background count rates. From these results, the diversion control set point was set at 77.5 net cps, corresponding to the Cs-137 RAL of 5.2 pCi/g [PBRF 2009b]. As initially set up, the ScanSort system logged a spectrum for each one-foot of belt travel and the control system logic compared the running average of 24 consecutive counts to the DCS [PBRF 2009c].

During an NRC inspection site visit in 2009, the inspectors observed the ScanSort system in operation. The concern was raised that as operated, the system could fail to divert small volumes of soil containing activity in excess of the DCGL. Upon review by NASA, it was agreed that this was a concern and Mactec was requested to evaluate and change the set point 28 Detailed descriptions and explanations of the ScanSort soil assay and diversion control system design and operational logic are considered proprietary by Mactec Development Corp. The descriptions contained in the present report are more general in nature, but contain sufficient detail to document measurement performance. These descriptions are based on publically available reports and unrestricted PBRF Decommissioning Project documents.

29 The PBRF FSS Plan (§ 12.6, Instrument Selection, Calibration and Operation), requires that instruments used for FSS measurements be performed with NIST traceable sources using approved procedures. To meet this requirement, NIST traceability for the conveyor system soil calibration standards was established under a special procedure (PBRF-WEP 013). This established a documented chain of comparisons from the NIST traceable Laboratory Gamma Spectroscopy calibration standard to the results of the soil samples analyzed by the PBRF on-site laboratory to create the conveyor system calibration soil standard material.

28

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 control algorithm as appropriate [PBRF 2009c]. This was done and the algorithm adjusted to calculate the running average every four feet of conveyor belt travel. This would control diversion of a volume of soil as small as 175 lb in excess of the DCGL. Repeated test runs were performed and it was demonstrated that small volumes of contaminated soil simulated by placement of as few as 4 bags of medium activity reference standard soil material, were consistently diverted [PBRF 2009c].

5.0 Survey Results Results of the FSS are presented in this section. This includes scan survey frequencies (% of areas covered) for each survey unit and occurrence of events where scan investigation levels were exceeded. Investigations performed and the results are summarized. Fixed measurement results for each survey unit and the results of comparison tests of survey unit maximum and average values with the DCGLW are reported. As discussed below, no statistical tests were required. It is shown that levels of residual contamination have been reduced to levels that are ALARA. This section closes with a summary which concludes that applicable criteria for release of excavated soil for unrestricted use are satisfied and all FSS Plan requirements are met.

5.1 Scan Surveys and Investigations Scan survey results were reviewed to confirm that the scan coverage requirement (as % of survey unit area) was satisfied for all survey units established for excavated soil. All this material was classified as Class 1, so all survey units received 100% scan coverage. This includes soil processed by the Orion ScanSort system and the FSS of soil in lifts. The results of QC replicate scan surveys were also reviewed to confirm that the minimum coverage requirement of 5% was satisfied.

In the soil processing by the ScanSort system, soil diversions initiated by recording of counts greater than the DCS are equivalent to exceedance of scan investigation-action levels during manual scan surveys. Altogether, 8016 diversion events were recorded, resulting in diversion of 1759 tons of soil. Only 9 diversion events were due to counts in excess of the DCS [PBRF 2009b]. The 9 diversion events due to activity detected above the DCS are listed in Table 10.

The table shows that a total of only 1575 lb (0.8 tons) was diverted from counts in excess of the DCS (out of 97084 tons processed by the ScanSort system). Most diversion events occurred from other causes, primarily low soil density [Lopez 2011]. Most material diverted from causes other than DCS events was re-processed through the ScanSort system.

An investigation was initiated during the ScanSort processing of Batch No. 119, when a recorded net count, 79.68 cps, was above the DCS (77.48 cps), but the soil was not diverted.

The auxiliary detection system recorded a maximum activity concentration of 6.18 pCi/g for the affected soil volume. The ScanSort system was tested by placing a 10 µCi Cs-137 button source on the conveyor in various positions in soil passing beneath the primary detectors. In all the test passes, the control system software generated a diversion signal when the observed count rate exceeded the 77.48 cps DCS. To confirm that the soil in Batch 119 was below the DCGL, results of 16 samples of soil collected for gamma spectroscopy analysis were evaluated. The maximum Cs-137 concentration was 0.30 pCi/g and the average 29

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 concentration was 0.10 pCi/g. This batch was approved for staging with clean discharge soil for future use as backfill. No further instances of failure to divert when the DCS was exceeded were observed during the operation of the ScanSort system [PBRF 2009b].

Table 10, ScanSort System Diversion Events Caused by DCS Exceedance Measured Average Net Cs-137 Survey Unit Mass of Soil No. Date Activity (Batch No.) Diverted (lb)

(cps) (pCi/g) 1 02/02/10 138 175 82.19 5.7 2 02/11/10 144 175 675.14 47.0 3 02/22/10 149 175 389.82 27.1 4 03/04/10 157 175 1056.75 70.92 5 04/12/10 173 175 96.27 6.46 6 07/15/10 185 175 83.77 5.62 7 07/27/10 196 175 162.84 10.93 8 07/27/10 196 175 159.67 10.72 9 08/06/10 206 175 148.12 9.94 Results of the lift scan surveys are compiled in Table 11. The table shows that scan coverage requirements were satisfied for all survey units. Scan investigation levels were exceeded in two of the lift survey units. In Survey Unit OL-5-6, the scan investigation level was exceeded in a small localized area. A soil sample collected at the location showed a Cs-137 concentration of 2.93 pCi/g. In Survey Unit OL-5-8, the scan investigation level was exceeded in several locations. The survey was terminated and the lift soil was remediated.

Upon the resurvey, no scan investigation levels were exceeded. See the Table 11 Notes for additional details.

Table 11, Soil Lift Scan Survey Results Survey Survey Investigation QC Replicate Scan Unit ID Request Performed Coverage (%)

OL-5-1 283 No 6.0 OL-5-2 283 No 6.0 OL-5-3 283 No 6.0 OL-5-4 283 No 5.0 OL-5-5 283 No 6.5 OL-5-6 283 Yes (1) 5.0 OL-5-7 283 No 6.5 OL-5-8 283/290 No (2) 6.5 OL-5-9 286 No 6.5 OL-5-10 283 No 6.5 OL-5-11 286 No 6.5 OL-5-12 283/290 No 6.5 OL-5-13 283/290 No 6.5 OL-5-14 283/290 No 5.4 OL-5-15 283/290 No 6.5 OL-5-16 283/290 No 6.5 OL-5-17 283/290 No 6.5 30

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 11, Soil Lift Scan Survey Results Survey Survey Investigation QC Replicate Scan Unit ID Request Performed Coverage (%)

OL-5-18 283/290 No 6.5 OL-5-19 283/290 No 5.4 OL-5-20 283/290 No 6.5 OL-5-21 283/290 No 5.4 OL-5-22 283/290 No 6.5 OL-5-23 283/290 No 6.5 OL-5-24 283/290 No 6.5 OL-5-25 283/290 No 6.5 OL-5-26 283/290 No 6.5 OL-5-27 283/290 No 6.5 OL-5-28 283/290 No 6.5 OL-5-29 286 No 6.4 OL-5-30 283/290 No 6.5 OL-5-31 283/290 No 6.4 OL-5-32 283/290 No 6.5 OL-5-33 283/290 No 6.5 OL-5-34 283/290 No 6.5 OL-5-35 283/290 No 6.5 OL-5-36 283/290 No 6.5 OL-5-37 283/290 No 6.5 OL-5-38 283/290 No 6.5 OL-5-39 283/290 No 6.5 OL-5-40 283/290 No 6.5 OL-5-41 283/290 No 11.3 OL-5-42 283/290 No 5.5 OL-5-43 283/290 No 5.3 OL-5-44 283/290 No 5.6 OL-5-45 283/290 No 5.8 Table 11 Notes:

1. Activity above the scan investigation level of 200 ncpm was detected in one location (LMI 44-10 detector operating in the Cs-137 energy window mode).

The affected area was approximately 0.25 ft2. A soil sample was collected and analyzed by gamma spectroscopy; Cs-137 was measured at 2.93 pCi/g. After the sample was collected, a static measurement was taken at the location; it showed 63 ncpm.

2. Investigations performed under the initial survey request for this survey unit identified several areas > the investigation level. The survey was failed and the lift was remediated and then resurveyed under SR-290. No investigations were performed under the resurvey.

31

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 5.2 Fixed Measurements and Tests Results of FSS soil sample gamma spectroscopy analysis for excavated material are presented in Table 12 for soil processed by the ScanSort system. Table 13 presents results from soil surveyed in lifts.

As described in Section 3.2, one liter grab samples were collected from the ScanSort clean discharge conveyor as it discharged the soil into individual piles. A minimum of 15 samples was collected from the soil discharged to each clean pile. The piles are identified as numbered batches in the table. There were 211 batches in all. The samples were analyzed by gamma spectroscopy at the PBRF on-site counting laboratory. Table 12 identifies the Batch Number, the number of measurements (samples collected) from each batch and the maximum and average Cs-137 concentration measured in the samples from each batch. Note that the number of samples reported for each batch includes one QC sample. The average and maximum concentration from each batch is compared the Cs-137 surrogate DCGLW, 10.3 pCi/g. As seen in the table, all the batch maximum and average values are below the DCGLW.

Unity fractions for each sample were also calculated. The highest unity fraction is 0.09.

The individual clean discharge batch sample results are reported in Appendix B. Results from 3407 samples are reported (3196 original and 211 QC samples) for Cs-137 and Co-60. All Co-60 results are < MDA and 1340 samples (39%) were below MDA for Cs-137. The average Cs-137 concentration is 0.35 pCi/g and the maximum is 1.32 pCi/g. The average and maximum MDA values for Cs-137 analysis are 0.09 and 0.33 pCi/g, respectively. The average and maximum MDA values for Co-60 analysis are 0.12 and 0.71 pCi/g, respectively.

Table 12, FSS Sample Results for ScanSort Clean Discharge Test Test Cs-137 Cs-137 Maximum Survey No. of Result: Result:

Maximum Average Unity Unit ID Measurements Max. < Avg. <

(pCi/g) (pCi/g) Fraction DCGLW DCGLW Batch 1 16 3.84E-01 Yes 2.28E-01 Yes 0.03 Batch 2 16 2.22E-01 Yes 1.94E-01 Yes 0.02 Batch 3 16 1.84E-01 Yes 1.73E-01 Yes 0.01 Batch 4 16 3.33E-01 Yes 2.93E-01 Yes 0.00 Batch 5 16 2.06E-01 Yes 1.93E-01 Yes 0.01 Batch 6 16 3.48E-01 Yes 2.11E-01 Yes 0.02 Batch 7 16 2.89E-01 Yes 2.35E-01 Yes 0.01 Batch 8 16 5.42E-01 Yes 4.11E-01 Yes 0.04 Batch 9 16 5.36E-01 Yes 3.53E-01 Yes 0.04 Batch 10 16 4.96E-01 Yes 2.99E-01 Yes 0.04 Batch 11 16 4.33E-01 Yes 3.27E-01 Yes 0.03 Batch 12 19 6.06E-01 Yes 3.15E-01 Yes 0.04 Batch 13 16 3.53E-01 Yes 2.91E-01 Yes 0.03 Batch 14 16 4.07E-01 Yes 2.87E-01 Yes 0.02 Batch 15 16 4.09E-01 Yes 3.01E-01 Yes 0.03 Batch 16 16 4.99E-01 Yes 3.33E-01 Yes 0.04 Batch 17 16 4.65E-01 Yes 3.15E-01 Yes 0.03 32

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 12, FSS Sample Results for ScanSort Clean Discharge Test Test Cs-137 Cs-137 Maximum Survey No. of Result: Result:

Maximum Average Unity Unit ID Measurements Max. < Avg. <

(pCi/g) (pCi/g) Fraction DCGLW DCGLW Batch 18 17 4.35E-01 Yes 3.06E-01 Yes 0.03 Batch 19 16 3.86E-01 Yes 2.82E-01 Yes 0.03 Batch 20 17 3.15E-01 Yes 2.47E-01 Yes 0.02 Batch 21 16 3.64E-01 Yes 2.89E-01 Yes 0.03 Batch 22 16 4.11E-01 Yes 2.89E-01 Yes 0.03 Batch 23 20 4.07E-01 Yes 2.92E-01 Yes 0.03 Batch 24 16 3.94E-01 Yes 3.34E-01 Yes 0.03 Batch 25 16 7.05E-01 Yes 4.96E-01 Yes 0.05 Batch 26 16 6.78E-01 Yes 4.93E-01 Yes 0.05 Batch 27 16 5.14E-01 Yes 4.09E-01 Yes 0.04 Batch 28 16 6.61E-01 Yes 4.38E-01 Yes 0.05 Batch 29 16 7.09E-01 Yes 4.88E-01 Yes 0.05 Batch 30 16 5.06E-01 Yes 3.29E-01 Yes 0.04 Batch 31 16 6.66E-01 Yes 3.97E-01 Yes 0.05 Batch 32 16 5.18E-01 Yes 3.85E-01 Yes 0.04 Batch 33 16 5.30E-01 Yes 3.88E-01 Yes 0.04 Batch 34 16 5.83E-01 Yes 3.73E-01 Yes 0.04 Batch 35 16 5.96E-01 Yes 3.83E-01 Yes 0.04 Batch 36 16 6.46E-01 Yes 4.46E-01 Yes 0.05 Batch 37 16 5.27E-01 Yes 4.38E-01 Yes 0.04 Batch 38 16 6.44E-01 Yes 4.45E-01 Yes 0.04 Batch 39 16 6.52E-01 Yes 4.76E-01 Yes 0.05 Batch 40 16 7.47E-01 Yes 5.09E-01 Yes 0.05 Batch 41 16 5.59E-01 Yes 3.80E-01 Yes 0.04 Batch 42 16 5.59E-01 Yes 3.98E-01 Yes 0.04 Batch 43 16 5.34E-01 Yes 3.91E-01 Yes 0.04 Batch 44 16 5.61E-01 Yes 3.65E-01 Yes 0.04 Batch 45 16 5.60E-01 Yes 3.70E-01 Yes 0.04 Batch 46 16 5.15E-01 Yes 4.04E-01 Yes 0.04 Batch 47 16 6.61E-01 Yes 4.21E-01 Yes 0.05 Batch 48 16 6.74E-01 Yes 4.38E-01 Yes 0.05 Batch 49 16 5.64E-01 Yes 3.82E-01 Yes 0.04 Batch 50 16 5.13E-01 Yes 3.87E-01 Yes 0.04 Batch 51 16 4.98E-01 Yes 3.77E-01 Yes 0.04 Batch 52 16 4.61E-01 Yes 3.82E-01 Yes 0.03 Batch 53 16 4.72E-01 Yes 3.64E-01 Yes 0.03 Batch 54 16 4.92E-01 Yes 3.64E-01 Yes 0.04 Batch 55 16 4.94E-01 Yes 3.65E-01 Yes 0.04 Batch 56 16 6.89E-01 Yes 4.70E-01 Yes 0.05 Batch 57 16 9.11E-01 Yes 5.02E-01 Yes 0.06 Batch 58 16 6.14E-01 Yes 4.56E-01 Yes 0.05 Batch 59 16 6.41E-01 Yes 4.83E-01 Yes 0.05 Batch 60 16 7.23E-01 Yes 5.30E-01 Yes 0.05 33

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 12, FSS Sample Results for ScanSort Clean Discharge Test Test Cs-137 Cs-137 Maximum Survey No. of Result: Result:

Maximum Average Unity Unit ID Measurements Max. < Avg. <

(pCi/g) (pCi/g) Fraction DCGLW DCGLW Batch 61 16 7.23E-01 Yes 5.09E-01 Yes 0.05 Batch 62 16 7.51E-01 Yes 5.38E-01 Yes 0.05 Batch 63 16 7.59E-01 Yes 5.79E-01 Yes 0.05 Batch 64 16 6.34E-01 Yes 5.13E-01 Yes 0.05 Batch 65 16 1.32E+00 Yes 6.54E-01 Yes 0.09 Batch 66 16 7.59E-01 Yes 5.91E-01 Yes 0.05 Batch 67 16 8.18E-01 Yes 5.72E-01 Yes 0.06 Batch 68 16 1.07E+00 Yes 5.43E-01 Yes 0.08 Batch 69 16 5.44E-01 Yes 3.50E-01 Yes 0.04 Batch 70 16 5.77E-01 Yes 3.43E-01 Yes 0.04 Batch 71 16 4.36E-01 Yes 3.39E-01 Yes 0.03 Batch 72 16 5.99E-01 Yes 4.13E-01 Yes 0.04 Batch 73 16 6.17E-01 Yes 3.87E-01 Yes 0.04 Batch 74 16 2.07E-01 Yes 1.87E-01 Yes 0.01 Batch 75 16 1.81E-01 Yes 1.72E-01 Yes 0.01 Batch 76 16 1.84E-01 Yes 1.64E-01 Yes 0.01 Batch 77 18 2.20E-01 Yes 1.78E-01 Yes 0.02 Batch 78 16 1.85E-01 Yes 1.85E-01 Yes 0.01 Batch 79 16 5.08E-01 Yes 3.26E-01 Yes 0.04 Batch 80 16 2.93E-01 Yes 2.93E-01 Yes 0.02 Batch 81 17 1.24E-01 Yes 1.24E-01 Yes 0.01 Batch 82 16 < MDA Yes < MDA Yes NA Batch 83 16 1.88E-01 Yes 1.88E-01 Yes 0.01 Batch 84 16 < MDA Yes < MDA Yes NA Batch 85 16 < MDA Yes < MDA Yes NA Batch 86 16 < MDA Yes < MDA Yes NA Batch 87 16 < MDA Yes < MDA Yes NA Batch 88 16 < MDA Yes < MDA Yes NA Batch 89 16 < MDA Yes < MDA Yes NA Batch 90 16 < MDA Yes < MDA Yes NA Batch 91 16 < MDA Yes < MDA Yes NA Batch 92 16 < MDA Yes < MDA Yes NA Batch 93 16 < MDA Yes < MDA Yes NA Batch 94 16 < MDA Yes < MDA Yes NA Batch 95 16 < MDA Yes < MDA Yes NA Batch 96 16 < MDA Yes < MDA Yes NA Batch 97 16 < MDA Yes < MDA Yes NA Batch 98 16 < MDA Yes < MDA Yes NA Batch 99 16 2.04E-01 Yes 2.04E-01 Yes NA Batch 100 16 3.60E-01 Yes 2.52E-01 Yes 0.03 Batch 101 16 < MDA Yes < MDA Yes NA Batch 102 16 2.15E-01 Yes 2.15E-01 Yes 0.02 Batch 103 16 2.78E-01 Yes 2.44E-01 Yes 0.02 34

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 12, FSS Sample Results for ScanSort Clean Discharge Test Test Cs-137 Cs-137 Maximum Survey No. of Result: Result:

Maximum Average Unity Unit ID Measurements Max. < Avg. <

(pCi/g) (pCi/g) Fraction DCGLW DCGLW Batch 104 16 3.41E-01 Yes 2.42E-01 Yes 0.02 Batch 105 16 3.41E-01 Yes 2.35E-01 Yes 0.02 Batch 106 16 3.82E-01 Yes 2.91E-01 Yes 0.03 Batch 107 16 4.26E-01 Yes 3.12E-01 Yes 0.03 Batch 108 16 3.57E-01 Yes 2.58E-01 Yes 0.03 Batch 109 16 3.59E-01 Yes 2.38E-01 Yes 0.03 Batch 110 16 4.22E-01 Yes 2.60E-01 Yes 0.03 Batch 111 16 4.07E-01 Yes 2.96E-01 Yes 0.03 Batch 112 16 4.03E-01 Yes 2.76E-01 Yes 0.03 Batch 113 16 3.03E-01 Yes 2.47E-01 Yes 0.03 Batch 114 16 2.09E-01 Yes 2.09E-01 Yes 0.01 Batch 115 16 2.04E-01 Yes 1.90E-01 Yes 0.01 Batch 116 17 2.63E-01 Yes 2.35E-01 Yes 0.02 Batch 117 16 5.87E-01 Yes 3.25E-01 Yes 0.04 Batch 118 16 2.12E-01 Yes 1.93E-01 Yes 0.02 Batch 119 16 2.99E-01 Yes 2.36E-01 Yes 0.02 Batch 120 16 2.46E-01 Yes 2.15E-01 Yes 0.02 Batch 121 16 4.01E-01 Yes 2.60E-01 Yes 0.03 Batch 122 16 3.41E-01 Yes 2.38E-01 Yes 0.02 Batch 123 16 2.58E-01 Yes 1.88E-01 Yes 0.02 Batch 124 16 2.41E-01 Yes 2.15E-01 Yes 0.02 Batch 125 16 2.88E-01 Yes 2.45E-01 Yes 0.02 Batch 126 16 2.72E-01 Yes 2.16E-01 Yes 0.02 Batch 127 17 2.03E-01 Yes 2.03E-01 Yes 0.01 Batch 128 17 3.41E-01 Yes 2.05E-01 Yes 0.02 Batch 129 17 2.47E-01 Yes 2.09E-01 Yes 0.02 Batch 130 16 2.48E-01 Yes 1.92E-01 Yes 0.02 Batch 131 17 3.64E-01 Yes 2.44E-01 Yes 0.03 Batch 132 16 2.90E-01 Yes 2.05E-01 Yes 0.02 Batch 133 16 2.56E-01 Yes 2.16E-01 Yes 0.02 Batch 134 16 2.40E-01 Yes 1.87E-01 Yes 0.02 Batch 135 16 2.50E-01 Yes 2.08E-01 Yes 0.02 Batch 136 17 2.30E-01 Yes 1.91E-01 Yes 0.02 Batch 137 16 2.57E-01 Yes 2.25E-01 Yes 0.02 Batch 138 16 2.71E-01 Yes 1.67E-01 Yes 0.02 Batch 139 16 3.60E-01 Yes 2.24E-01 Yes 0.03 Batch 140 16 5.26E-01 Yes 2.79E-01 Yes 0.04 Batch 141 16 4.53E-01 Yes 2.88E-01 Yes 0.03 Batch 142 16 7.51E-01 Yes 3.54E-01 Yes 0.05 Batch 143 16 3.93E-01 Yes 2.70E-01 Yes 0.03 Batch 144 16 4.67E-01 Yes 3.25E-01 Yes 0.03 Batch 145 16 4.70E-01 Yes 3.24E-01 Yes 0.03 Batch 146 16 4.89E-01 Yes 3.23E-01 Yes 0.03 35

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 12, FSS Sample Results for ScanSort Clean Discharge Test Test Cs-137 Cs-137 Maximum Survey No. of Result: Result:

Maximum Average Unity Unit ID Measurements Max. < Avg. <

(pCi/g) (pCi/g) Fraction DCGLW DCGLW Batch 147 16 5.82E-01 Yes 3.53E-01 Yes 0.04 Batch 148 16 4.48E-01 Yes 3.23E-01 Yes 0.03 Batch 149 16 5.53E-01 Yes 3.27E-01 Yes 0.04 Batch 150 16 4.08E-01 Yes 3.05E-01 Yes 0.03 Batch 151 16 8.43E-01 Yes 3.76E-01 Yes 0.06 Batch 152 16 3.25E-01 Yes 2.69E-01 Yes 0.02 Batch 153 16 3.10E-01 Yes 2.57E-01 Yes 0.02 Batch 154 16 3.08E-01 Yes 2.45E-01 Yes 0.02 Batch 155 16 2.82E-01 Yes 2.19E-01 Yes 0.02 Batch 156 17 3.36E-01 Yes 1.97E-01 Yes 0.02 Batch 157 16 2.56E-01 Yes 2.07E-01 Yes 0.02 Batch 158 18 3.29E-01 Yes 2.24E-01 Yes 0.02 Batch 159 16 2.23E-01 Yes 1.82E-01 Yes 0.02 Batch 160 16 3.06E-01 Yes 2.10E-01 Yes 0.02 Batch 161 16 2.98E-01 Yes 2.01E-01 Yes 0.02 Batch 162 16 2.45E-01 Yes 1.84E-01 Yes 0.02 Batch 163 16 2.09E-01 Yes 1.73E-01 Yes 0.01 Batch 164 16 2.34E-01 Yes 1.96E-01 Yes 0.02 Batch 165 17 2.49E-01 Yes 1.90E-01 Yes 0.02 Batch 166 17 2.81E-01 Yes 2.10E-01 Yes 0.02 Batch 167 16 1.99E-01 Yes 1.74E-01 Yes 0.01 Batch 168 17 2.62E-01 Yes 1.84E-01 Yes 0.02 Batch 169 16 1.99E-01 Yes 1.84E-01 Yes 0.01 Batch 170 16 2.27E-01 Yes 1.74E-01 Yes 0.02 Batch 171 17 2.48E-01 Yes 1.89E-01 Yes 0.02 Batch 172 16 2.33E-01 Yes 1.80E-01 Yes 0.02 Batch 173 16 2.12E-01 Yes 1.52E-01 Yes 0.02 Batch 174 16 2.78E-01 Yes 2.50E-01 Yes 0.02 Batch 175 17 8.01E-01 Yes 2.80E-01 Yes 0.06 Batch 176 16 2.34E-01 Yes 2.02E-01 Yes 0.02 Batch 177 16 2.59E-01 Yes 2.09E-01 Yes 0.02 Batch 178 16 2.11E-01 Yes 1.77E-01 Yes 0.02 Batch 179 16 3.28E-01 Yes 2.25E-01 Yes 0.02 Batch 180 16 4.00E-01 Yes 3.20E-01 Yes 0.03 Batch 181 16 3.73E-01 Yes 3.17E-01 Yes 0.03 Batch 182 16 3.24E-01 Yes 2.83E-01 Yes 0.02 Batch 183 16 4.27E-01 Yes 2.92E-01 Yes 0.03 Batch 184 16 3.02E-01 Yes 2.28E-01 Yes 0.02 Batch 185 16 4.33E-01 Yes 3.18E-01 Yes 0.03 Batch 186 18 4.10E-01 Yes 3.14E-01 Yes 0.03 Batch 187 16 4.15E-01 Yes 3.42E-01 Yes 0.03 Batch 188 16 4.14E-01 Yes 2.93E-01 Yes 0.03 Batch 189 16 4.70E-01 Yes 3.27E-01 Yes 0.03 36

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 12, FSS Sample Results for ScanSort Clean Discharge Test Test Cs-137 Cs-137 Maximum Survey No. of Result: Result:

Maximum Average Unity Unit ID Measurements Max. < Avg. <

(pCi/g) (pCi/g) Fraction DCGLW DCGLW Batch 190 16 5.36E-01 Yes 3.54E-01 Yes 0.04 Batch 191 16 4.32E-01 Yes 3.26E-01 Yes 0.03 Batch 192 16 5.11E-01 Yes 3.50E-01 Yes 0.04 Batch 193 16 5.98E-01 Yes 3.71E-01 Yes 0.04 Batch 194 16 8.64E-01 Yes 5.10E-01 Yes 0.06 Batch 195 16 6.26E-01 Yes 4.65E-01 Yes 0.04 Batch 196 16 1.08E+00 Yes 6.96E-01 Yes 0.08 Batch 197 16 6.70E-01 Yes 5.31E-01 Yes 0.05 Batch 198 16 8.51E-01 Yes 5.77E-01 Yes 0.06 Batch 199 16 5.78E-01 Yes 3.81E-01 Yes 0.04 Batch 200 16 5.14E-01 Yes 3.49E-01 Yes 0.04 Batch 201 16 4.19E-01 Yes 2.86E-01 Yes 0.03 Batch 202 16 4.25E-01 Yes 2.96E-01 Yes 0.03 Batch 203 16 4.18E-01 Yes 3.02E-01 Yes 0.03 Batch 204 16 4.62E-01 Yes 3.42E-01 Yes 0.03 Batch 205 16 5.71E-01 Yes 4.52E-01 Yes 0.04 Batch 206 16 7.42E-01 Yes 4.85E-01 Yes 0.05 Batch 207 16 4.89E-01 Yes 2.89E-01 Yes 0.03 Batch 208 16 3.24E-01 Yes 2.56E-01 Yes 0.02 Batch 209 16 4.14E-01 Yes 3.15E-01 Yes 0.03 Batch 210 16 4.52E-01 Yes 3.06E-01 Yes 0.03 Batch 211 16 4.62E-01 Yes 3.41E-01 Yes 0.03 Sample results are presented in Table 13 for 45 surface soil survey units established for FSS using standard walkover gamma scans followed by soil sample collection. As discussed in Section 4.2, 41 soil lift survey units were established for FSS of stockpiled soil that remained or was excavated after the ScanSort system was demobilized in 2010.30 Four survey units were established on the land area where soil was stockpiled for the soil lift surveys. The surveys were performed under Survey Requests SR-283, 286 and 290. The survey unit VSP design maps with soil sample location coordinates are provided in Appendix C and the individual sample analysis results in Appendix D.

Table 13 is constructed identically to Table 12. It shows the results of Cs-137 concentrations measured by the PBRF on-site counting laboratory (all Co-60 results were below MDA). The maximum and average Cs-137 concentrations for each survey unit are compared to the DCGLW established in Design 55, the Cs-137 surrogate DCGL of 11.4 pCi/g. All survey unit sample results are well below this DCGL, with the maximum unity fraction equal to 0.07.

From the Appendix D data, the maximum individual sample concentration is 0.77 and the 30 Included in the material staged for and surveyed in lifts was the material removed from spill areas 1, 2 and 3, designated as Co-60 areas (See Table 1). This material, which was surveyed in lifts OL-5-9, OL-5-11 and OL-5-29, was segregated from the soil staged for survey by the ScanSort system, as the system was not calibrated to identify and divert soil with a principal contaminant of Co-60.

37

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 average is 0.36 pCi/g. Of the 536 samples analyzed, 331 results were less than the Cs-137 MDA. The average and maximum MDA values for Cs-137 analysis are 0.10 and 0.16 pCi/g, respectively. The average and maximum MDA values for Co-60 analysis are 0.12 and 0.16 pCi/g, respectively.

Table 13, FSS Sample Results for Soil Lifts Test Test Maximum Survey No. of Maximum Result: Average Result:

Unity Unit ID Measurements (pCi/g) Max. < (pCi/g) Avg. <

Fraction DCGLW DCGLW OL-5-1 12 1.67E-01 Yes 1.67E-01 Yes 0.015 OL-5-2 12 4.08E-01 Yes 3.05E-01 Yes 0.036 OL-5-3 12 3.44E-01 Yes 2.66E-01 Yes 0.030 OL-5-4 12 4.35E-01 Yes 3.55E-01 Yes 0.038 OL-5-5 12 5.45E-01 Yes 3.83E-01 Yes 0.048 OL-5-6 12 5.92E-01 Yes 4.31E-01 Yes 0.052 OL-5-7 12 4.89E-01 Yes 3.80E-01 Yes 0.043 OL-5-8 12 5.56E-01 Yes 3.89E-01 Yes 0.049 OL-5-9 12 2.43E-01 Yes 2.43E-01 Yes 0.017 OL-5-10 12 2.14E-01 Yes 2.12E-01 Yes 0.019 OL-5-11 11 6.42E-01 Yes 4.01E-01 Yes 0.045 OL-5-12 12 3.22E-01 Yes 2.62E-01 Yes 0.028 OL-5-13 12 N/A Yes N/A N/A 0.000 OL-5-14 12 3.22E-01 Yes 2.83E-01 Yes 0.028 OL-5-15 12 2.80E-01 Yes 2.56E-01 Yes 0.025 OL-5-16 12 0.00E+00 Yes N/A N/A 0.000 OL-5-17 12 1.89E-01 Yes 1.89E-01 Yes 0.017 OL-5-18 12 7.56E-01 Yes 4.93E-01 Yes 0.066 OL-5-19 12 N/A Yes N/A N/A 0.000 OL-5-20 12 7.68E-01 Yes 5.64E-01 Yes 0.067 OL-5-21 12 6.22E-01 Yes 4.01E-01 Yes 0.055 OL-5-22 12 1.62E-01 Yes 1.62E-01 Yes 0.014 OL-5-23 12 2.89E-01 Yes 2.13E-01 Yes 0.025 OL-5-24 12 1.99E-01 Yes 1.65E-01 Yes 0.017 OL-5-25 12 1.62E-01 Yes 1.62E-01 Yes 0.014 OL-5-26 12 N/A Yes N/A N/A 0.000 OL-5-27 12 2.53E-01 Yes 2.15E-01 Yes 0.022 OL-5-28 12 1.82E-01 Yes 1.82E-01 Yes 0.016 OL-5-29 12 2.31E-01 Yes 1.81E-01 Yes 0.016 OL-5-30 12 6.65E-01 Yes 4.40E-01 Yes 0.058 OL-5-31 12 1.64E-01 Yes 1.64E-01 Yes 0.014 OL-5-32 12 5.67E-01 Yes 4.55E-01 Yes 0.050 OL-5-33 12 2.29E-01 Yes 2.03E-01 Yes 0.020 38

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 13, FSS Sample Results for Soil Lifts Test Test Maximum Survey No. of Maximum Result: Average Result:

Unity Unit ID Measurements (pCi/g) Max. < (pCi/g) Avg. <

Fraction DCGLW DCGLW OL-5-34 12 2.72E-01 Yes 2.17E-01 Yes 0.024 OL-5-35 12 2.13E-01 Yes 1.96E-01 Yes 0.019 OL-5-36 12 6.22E-01 Yes 4.27E-01 Yes 0.055 OL-5-37 12 4.54E-01 Yes 3.42E-01 Yes 0.040 OL-5-38 12 2.64E-01 Yes 2.49E-01 Yes 0.023 OL-5-39 12 N/A Yes N/A N/A 0.000 OL-5-40 12 2.09E-01 Yes 1.96E-01 Yes 0.018 OL-5-41 12 N/A Yes N/A N/A 0.000 OL-5-42 11 3.90E-01 Yes 3.40E-01 Yes 0.034 OL-5-43 11 2.44E-01 Yes 2.44E-01 Yes 0.021 OL-5-44 12 4.86E-01 Yes 3.32E-01 Yes 0.043 OL-5-45 11 4.64E-01 Yes 3.60E-01 Yes 0.041 Table 13 Notes:

1. Unity fractions are calculated using DCGLW values from Designs 55 and 57: 11.4 pCi/g for Cs-137 (as surrogate) and 3.7 pCi/g for Co-60.

2. The acronym N/A is used to denote cases where the value or test could not be calculated, for example all measurements are below MDA.

5.3 Verification and QC Samples In addition to the samples collected from the ScanSort system clean discharge conveyor, verification samples were collected from selected clean discharge piles. These samples were also analyzed by gamma spectroscopy at the PBRF on-site counting laboratory. Results of the analysis of individual verification samples are provided in Appendix E, Table 1. A summary of the verification sample results is provided in Appendix E, Table 2. These results are quite similar to results from the ScanSort clean discharge samples reported in Table 12. As in the Table 12 results, all the verification sample Co-60 concentrations were < MDA; the average Cs-137 concentration measured in the verification samples was 0.30 pCi/g and the maximum was 0.54 pCi/g.

Replicate QC soil samples were collected along with the FSS samples collected from excavated and backfill material. These included:

211 samples from the ScanSort clean discharge (6.6% of the 3196 original samples) 46 samples from the lift survey units (8.6% of the 536 original samples) 4 samples from the SR-171 verification survey of clean discharge piles (6.5% of the 62 original samples).

39

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 The QC and original sample results were compared in accordance with the method in the FSS Plan, Section 12.7.2 [NASA 2007]. In this method, the sample resolution is calculated as the quotient of the original sample result and the original sample one-sigma uncertainty. Then the ratios of QC to original sample results are compared to acceptance values specified for each range of resolution given in FSS Plan Table 12-2.

Results of the 211 original and replicate QC sample comparisons are provided in an appendix to the vendor report for the ScanSort system soil sample results.31 In this report, all QC and original sample pairs except one satisfied the FSS Plan Table 12 criteria.32 Soil lift and verification sample and the associated QC sample results are shown in Table 3 of Appendix E. The table shows that all but 8 of the 50 sample pairs meet the FSS Plan Table 12 criteria. See the Appendix E, Table 3 Notes and the following table for details of the QC sample comparison.

5.4 ALARA Evaluation It is shown that residual contamination in excavated soil has been reduced to levels that are ALARA, using a method acceptable to the NRC. The NRC guidance on determining that residual contamination levels are ALARA includes the following:

In light of the conservatism in the building surface and surface soil generic screening levels developed by the NRC, NRC staff presumes, absent information to the contrary, that licensees who remediate building surfaces or soil to the generic screening levels do not need to provide analyses to demonstrate that these screening levels are ALARA. In addition, if residual radioactivity cannot be detected, it may be presumed that it had been reduced to levels that are ALARA. Therefore the licensee may not need to conduct an explicit analysis to meet the ALARA requirement.33 Soil activity concentrations measured in the FSS of excavated soil are compared to NRC surface soil screening level values in Table 14. As shown in the table, all soil activity concentrations are well below their respective screening level values. From these comparisons, it is concluded that the ALARA criterion is satisfied.

31 Table 9, SR-152 Survey Request Closeout Summary, November 1, 2010 (available as an Adobe Acrobat file in the PBRF Document Control system).

32 When the acceptance criterion is not met, an investigation is performed to determine the cause and corrective actions.

The investigation may include repetition of the replicate QC measurement or other actions determined by the FSS/Characterization Supervisor. If upon repetition, the acceptance criterion is still not satisfied, the result may be accepted if the original and QC replicate measurement are both are below the DCGL W for the survey unit, the FSS/Characterization Supervisor reviews the investigation and concurs that the measurements are acceptable and the results of the investigation are documented in the Survey Request Summary and Close-out (Procedure CS-01, Survey Methodology to Support PBRF License Termination).

33 This guidance was initially published in Draft Regulatory Guide DG-4006, but has been reissued in NUREG-1757 Volume 2, Appendix N.

40

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Table 14, NRC Soil Screening Level Values and ALARA Comparison NRC Screening Maximum Measured Radionuclide Level (pCi/g) (1) Concentration (pCi/g)

Co-60 3.8 < MDA (2)

Cs-137 11 1.32 (3)

Sr-90 1.7 0.12 (4)

Table 14 Notes:

1. NRC Screening Level values from NUREG-1757 Vol. 2 Table H.2 [USNRC 2006].

2. Average Co-60 MDA from 3407 samples analyzed under SR-152 is 0.12 +/- 0.03 pCi/g. The maximum MDA is 0.71 pCi/g.

3. The maximum Cs-137 concentration from 3407 samples analyzed under SR-152.

4. The maximum Sr-90 concentration inferred from the maximum measured Cs-137 concentrations and Sr-90: Cs-137 activity ratio of 0.09 (obtained from Table 4).

5.5 Comparison with EPA Trigger Levels In accordance with the October 2002 Memorandum of Understanding (MOU) between the US NRC and the US Environmental Protection Agency (EPA), The PBRF license termination process includes a review of residual contamination levels in groundwater and soil, as applicable [USEPA 2002]. Concentrations of individual radionuclides, identified as trigger levels for further review and consultation between the agencies, are published in the MOU.

Maximum activity concentrations of radionuclides of concern measured in the FSS of excavated soil are compared to EPA trigger levels. This comparison is shown in Table 15.

The table shows that the measured activity concentrations in excavated soil are well below EPA trigger levels. It is noted that groundwater is not within the scope of the FSS of excavated and backfill materials.

Table 15, Comparison of Soil Sample Results with EPA Trigger Levels EPA Trigger Maximum Measured Radionuclide Level (pCi/g) (1) Concentration (pCi/g)

Co-60 4 < MDA (2)

Cs-137 (3) 6 1.32 (4)

Sr-90 (3) 23 0.12 (5)

Table 15 Notes:

1. EPA Trigger Level concentrations for radionuclides in soil are from the EPA-NRC MOU [USEPA 2002].

2. See Table 14, Note 2.

3. Specified in the MOU as including daughter activity [USEPA 2002].

4. See Table 14, Note 3.

5. See Table 14, Note 4.

41

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 5.6 Conclusions The results presented above demonstrate that excavated and backfill material satisfies all FSS Plan commitments and meets the release criteria in 10CFR20 Subpart E. The principal conclusions are:

The FSS of excavated soil was accomplished by two methods: 1) scanning by an automated soil conveyor survey-sorting system followed by systematic sampling of soil passed by the system and 2) traditional FSS by walkover scans followed by systematic sampling of soil placed in lifts.

Measured activity concentrations in all the soil passed by the conveyor system and all the soil subjected to FSS by placement in lifts are found to be below applicable DCGLs.

Measured activity concentrations in all the soil passed by the conveyor system and all the soil subjected to traditional FSS are demonstrated to satisfy the ALARA criterion published by the NRC.

Measured activity concentrations in all the soil passed by the conveyor system and all the soil subjected to FSS by placement in lifts are demonstrated to be less than EPA trigger levels published in the 2002 EPA-NRC Memorandum of Understanding.

The excavated soil was obtained from areas initially classified as Class 1, 2 and 3 in the FSS Plan. All the excavated soil was conservatively classified as Class 1 for the FSS - there were no downward changes in classification.

One other change occurred from FSS Plan assumptions applicable to the FSS of excavated soil - the use of a soil scanning-sorting system was not specifically addressed. However, procedures were developed and followed to ensure that all applicable FSS Plan Requirements for FSS of soil were satisfied. These included procedures for calibration and operation of the Orion ScanSort system and collection and analysis of systematic samples from the ScanSort clean discharge.

It is concluded that all FSS Plan requirements have been satisfied and soil passed by the ScanSort system and FSS in lifts meets the NRC criteria for release for unrestricted use. Thus, the soil is acceptable for use as backfill at the PBRF site.

6.0 References ANL 2006 Argonne National Laboratory, Environmental Science Division, Human Health Fact Sheet, Strontium, November 2006, http://www.evs.anl.gov/pub/doc/Strontium.pdf.

Bowles 2006 Mark D. Bowles, Science in Flux, NASAs Nuclear Program at Plum Brook station 1955 - 2005, The NASA History Series, June 2006.

Hagelin 2010 Karl W. Hagelin, Bremba K. Jones and Associates, NASA Plum Brook Reactor Facility Coordinates, Personal Communication, December 20, 2010.

42

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 Lopez 2010 Lopez, Alex, Heres the Dirt on Soil Assay at Plum Brook, Radwaste Solutions, Volume 17, Number 4, July/August 2010.

Lopez 2011 Lopez, Alex and A. J. Lombardo, Application of Soil Segregation Technology:

Reducing Uncertainty and Increasing Efficiency at an NRC Test reactor Decommissioning Site, WM2011 Conference February, 2011 (pre-print).

MWH 2005 MWH Constructors, Soil Characterization Report, Plum Brook Reactor Facility, Feb. 14, 2005.

MWH 2005a MWH Constructors, PBRF Decommissioning Project Memorandum from Bruce Mann to Greg Fiscus, Re: Guidance for Soil Remediation - Action Levels, February 24, 2005.

NACA 1956 National Advisory Committee on Aeronautics, NACA Nuclear Reactor Plot Plan and Soil Boring Data, Drawing No. PF00101, Plot Plan and Soil Boring Data, Dec.

4, 1956.

NASA 1959 NASA, Final Hazards Summary Part II, Appendix D, Memorandum on the Geology and Hydrology of a Proposed Reactor site Near Sandusky, Ohio, 1959.

NASA 2007 NASA Safety and Mission Assurance Directorate, Final Status Survey Plan for the Plum Brook Reactor Facility, Revision 1, February 2007.

NASA 2007a NASA Safety and Mission Assurance Directorate, Decommissioning Plan for the Plum Brook Reactor Facility, Revision 6, July 2007.

PBRF 2009 Plum Brook Reactor Facility Technical Basis Document, Radionuclide Distributions and Adjusted DCGLs for Site Soils, PBRF-TBD-09-001, June 2009.

PBRF 2009a Plum Brook Reactor Facility Technical Basis Document, 44-10 NaI Detector MDCscan Values for Various Survey Conditions, PBRF-TBD-09-002, June 2009.

PBRF 2009b PBRF Decommissioning Project, Survey Request SR-152, Survey and Sampling Measurements of the Below Criteria Soil as Determined by the Radiological Assay of the Mactec ORION Soil Sorting System, July, 21, 2009 (closed Nov. 1, 2010).

PBRF 2009c Plum Brook Reactor Facility, Decommissioning Project Office, Memorandum from John Thomas, Project QA and Licensing Manager to Keith Peecook, NASA Decommissioning Program Manager, QA Review of Mactec ORION Verification Test, August 27, 2009.

PBRF 2009d Plum Brook Reactor Facility Technical Basis Document, Radiological Characterization of Plum Brook Sediments, PBRF-TBD-08-005, Rev. 1, March 2009.

43

Plum Brook Reactor Facility FSSR Attachment 18, Rev. 0 PBRF 2010 Plum Brook Reactor Facility, Final status Survey Report Attachment 4, Pentolite Ditch, August 25, 2010.

PBRF 2010a Plum Brook Reactor Facility Decommissioning Work Execution Package, PBRF-WEP-10-007, Plum Brook Remediation, July 12, 2010, Addendum 1.

PNL 2010 Battelle Pacific Northwest Laboratories (PNL), Visual sample Plan, Version 5.9, 2010.

SAIC 2010 Science Applications International Corporation, 2010 Summary of Revised Closure Activities and August 2010 Monitoring Well Sampling for the Reactor Area, NASA Plum Brook Station, Sandusky, Ohio, October 19, 2010.

Tele 1987 Teledyne Isotopes, An Evaluation of the Plum Brook Reactor Facility and Documentation of Existing Conditions, Prepared for NASA Lewis Research Center, December 1987.

USACE 2004 US Army Corps of Engineers Louisville District, Hydrological Report Plum Brook Reactor Facility Sandusky, Ohio, November 17, 2004.

USEPA 2002 Memorandum of Understanding, US Environmental Protection Agency and US Nuclear Regulatory Commission, Consultation and Finality on Decommissioning and Decontamination of Contaminated Sites, October 9, 2002.

USNRC 2000 US Nuclear Regulatory Commission, Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM), NUREG-1575, Rev.1, August 2000.

USNRC 2006 US Nuclear Regulatory Commission, Consolidated Decommissioning Guidance, Characterization, Survey and Determination of Radiological Criteria, NUREG 1757, Vol. 2, Rev.1, September 2006.

7.0 Appendices Appendix A - Exhibits Appendix B - ScanSort Clean Discharge Soil Sample Results Appendix C - Soil Lift Survey Unit Maps and Tables Showing Measurement Locations Appendix D - Soil Lift Survey Sample Results Appendix E - Verification and QC Sample Results 44

Final Status Survey Report Attachment 18 Excavated and Backfill Material Revision 0 Appendix A Exhibits

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 2 of 13 List of Exhibits Exhibit 1, Aerial View of Future PBRF Site showing Plum Brook Ordinance Works ....................... 3 Exhibit 2, Construction Photo Showing Excavation for Reactor Vessel Foundation.......................... 4 Exhibit 3, PBRF Construction Photo showing CRB Excavation in foreground ................................. 5 Exhibit 4, Ordinance Works showing Surface Stream Draining to the Northeast............................... 6 Exhibit 5, Map Showing Excavated Areas at Pentolite Ditch and Adjacent Spoil Areas ................... 7 Exhibit 6, Pentolite Ditch Excavation (July 2009) .............................................................................. 8 Exhibit 7, CRB Excavation (July 2009) .............................................................................................. 8 Exhibit 8, Excavation of WHB Evaporator Pit (August 2010) ............................................................ 9 Exhibit 9, HRA After Overburden Removed Prior to Excavation (February 2010) ........................... 9 Exhibit 10 Soil Staging Area for ScanSort Survey System (July 2009) ............................................ 10 Exhibit 11, View from Radar Tower Showing ScanSort System in Operation (August 2009)......... 10 Exhibit 12, ScanSort Reversing Conveyor (July 2009) ..................................................................... 11 Exhibit 13, ScanSort System Clean Discharge (August 2009) .......................................................... 11 Exhibit 14, Placing Soil on Lift for FSS (November 2010) .............................................................. 12 Exhibit 15, Scan Survey of Soil on Lift (November 2010) ............................................................... 12 Exhibit 16, Backfilling Excavated Storm Drain (July 2009) ............................................................. 13 Exhibit 17, View from Radar Tower Showing Backfilled Former ROLB Site (January 2011) ........ 13

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 3 of 13 Exhibit 1, Aerial View of Future PBRF Site showing Plum Brook Ordinance Works (Pentolite Production Lines Looking North - Line 2 Road in the Center, Photo circa 1955-56)

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 4 of 13 Exhibit 2, Construction Photo Showing Excavation for Reactor Vessel Foundation (Vessel foundation bottom liner is 59 feet below grade level, Photo circa 1955-56)

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 5 of 13 Exhibit 3, PBRF Construction Photo showing CRB Excavation in foreground (Aerial view from NE - Line 3 Road is in the center, Photo circa 1957)

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 6 of 13 Exhibit 4, Ordinance Works showing Surface Stream Draining to the Northeast (Aerial view looking west - Line 3 road in the foreground, Photo circa 1955-56)

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 7 of 13 Exhibit 5, Map Showing Excavated Areas at Pentolite Ditch and Adjacent Spoil Areas

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 8 of 13 Exhibit 6, Pentolite Ditch Excavation (July 2009)

Exhibit 7, CRB Excavation (July 2009)

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 9 of 13 Exhibit 8, Excavation of WHB Evaporator Pit (August 2010)

Exhibit 9, HRA After Overburden Removed Prior to Excavation (February 2010)

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 10 of 13 Exhibit 10 Soil Staging Area for ScanSort Survey System (July 2009)

(View from Radar Tower looking south - Line 3 Road on the left and Pentolite Road in the rear)

Exhibit 11, View from Radar Tower Showing ScanSort System in Operation (August 2009)

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 11 of 13 Exhibit 12, ScanSort Reversing Conveyor (July 2009)

Exhibit 13, ScanSort System Clean Discharge (August 2009)

(View from Radar Tower - Line 2 Road on the left and Pentolite Road at the rear)

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 12 of 13 Exhibit 14, Placing Soil on Lift for FSS (November 2010)

Exhibit 15, Scan Survey of Soil on Lift (November 2010)

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix A, Rev. 0, Page 13 of 13 Exhibit 16, Backfilling Excavated Storm Drain (July 2009)

Exhibit 17, View from Radar Tower Showing Backfilled Former ROLB Site (January 2011)

Plum Brook Reactor Facility Final Status Survey Report Attachment 18 Excavated and Backfill Materials Revision 0 Appendix B ScanSort Clean Discharge Sample Results

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 2 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1 Batch 1 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2 Batch 1 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-3 Batch 1 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-4 Batch 1 Clean Stockpile 4 1.86E-01 8.80E-02 <MDA <MDA SR-152-5 Batch 1 Clean Stockpile 5 2.07E-01 9.52E-02 <MDA <MDA SR-152-6 Batch 1 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-7 Batch 1 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-8 Batch 1 Clean Stockpile 8 3.84E-01 1.34E-01 <MDA <MDA SR-152-9 Batch 1 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-10 Batch 1 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-11 Batch 1 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-12 Batch 1 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-13 Batch 1 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-14 Batch 1 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-15 Batch 1 Clean Stockpile 15 1.71E-01 8.29E-02 <MDA <MDA SR-152-16 Batch 1 Clean Stockpile 16 1.93E-01 7.80E-02 <MDA <MDA SR-152-17 Batch 2 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-18 Batch 2 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-19 Batch 2 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-20 Batch 2 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-21 Batch 2 Clean Stockpile 5 1.88E-01 8.43E-02 <MDA <MDA SR-152-22 Batch 2 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-23 Batch 2 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-24 Batch 2 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-25 Batch 2 Clean Stockpile 9 1.91E-01 6.30E-02 <MDA <MDA SR-152-26 Batch 2 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-27 Batch 2 Clean Stockpile 11 1.75E-01 8.75E-02 <MDA <MDA SR-152-28 Batch 2 Clean Stockpile 12 2.22E-01 9.71E-02 <MDA <MDA SR-152-29 Batch 2 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-29R Recount 13R <MDA <MDA <MDA <MDA SR-152-30 Batch 2 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-31 Batch 2 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-32 Batch 2 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-033 Batch 3 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-034 Batch 3 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-035 Batch 3 Clean Stockpile 3 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 3 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-036 Batch 3 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-037 Batch 3 Clean Stockpile 5 1.63E-01 7.90E-02 <MDA <MDA SR-152-038 Batch 3 Clean Stockpile 6 1.84E-01 8.67E-02 <MDA <MDA SR-152-039 Batch 3 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-040 Batch 3 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-041 Batch 3 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-042 Batch 3 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-043 Batch 3 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-044 Batch 3 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-045 Batch 3 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-046 Batch 3 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-047 Batch 3 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-048 Batch 3 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-49 Batch 4 Clean Stockpile 1 3.33E-01 1.15E-01 <MDA <MDA SR-152-50 Batch 4 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-51 Batch 4 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-52 Batch 4 Clean Stockpile 4 2.54E-01 9.97E-02 <MDA <MDA SR-152-53 Batch 4 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-54 Batch 4 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-55 Batch 4 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-56 Batch 4 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-57 Batch 4 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-58 Batch 4 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-59 Batch 4 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-60 Batch 4 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-61 Batch 4 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-62 Batch 4 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-63 Batch 4 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-64 Batch 4 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-65 Batch 5 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-66 Batch 5 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-67 Batch 5 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-68 Batch 5 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-69 Batch 5 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-70 Batch 5 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-71 Batch 5 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-72 Batch 5 Clean Stockpile 8 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 4 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-73 Batch 5 Clean Stockpile 9 1.74E-01 8.00E-02 <MDA <MDA SR-152-74 Batch 5 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-75 Batch 5 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-76 Batch 5 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-77 Batch 5 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-78 Batch 5 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-79 Batch 5 Clean Stockpile 15 2.06E-01 9.73E-02 <MDA <MDA SR-152-80 Batch 5 Clean Stockpile 16 2.00E-01 9.70E-02 <MDA <MDA SR-152-81 Batch 6 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-82 Batch 6 Clean Stockpile 2 1.80E-01 8.48E-02 <MDA <MDA SR-152-83 Batch 6 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-84 Batch 6 Clean Stockpile 4 1.96E-01 9.27E-02 <MDA <MDA SR-152-85 Batch 6 Clean Stockpile 5 3.48E-01 1.32E-01 <MDA <MDA SR-152-86 Batch 6 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-87 Batch 6 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-88 Batch 6 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-89 Batch 6 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-90 Batch 6 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-91 Batch 6 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-92 Batch 6 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-93 Batch 6 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-94 Batch 6 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-95 Batch 6 Clean Stockpile 15 1.67E-01 7.66E-02 <MDA <MDA SR-152-96 Batch 6 Clean Stockpile 16 1.65E-01 6.03E-02 <MDA <MDA SR-152-97 Batch 7 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-98 Batch 7 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-99 Batch 7 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-100 Batch 7 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-101 Batch 7 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-102 Batch 7 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-103 Batch 7 Clean Stockpile 7 2.89E-01 1.21E-01 <MDA <MDA SR-152-104 Batch 7 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-105 Batch 7 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-106 Batch 7 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-107 Batch 7 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-108 Batch 7 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-109 Batch 7 Clean Stockpile 13 1.81E-01 9.07E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 5 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-110 Batch 7 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-111 Batch 7 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-112 Batch 7 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-113 Batch 8 Clean Stockpile 1 5.31E-01 1.59E-01 <MDA <MDA SR-152-114 Batch 8 Clean Stockpile 2 4.57E-01 1.40E-01 <MDA <MDA SR-152-115 Batch 8 Clean Stockpile 3 4.94E-01 1.51E-01 <MDA <MDA SR-152-116 Batch 8 Clean Stockpile 4 3.20E-01 1.17E-01 <MDA <MDA SR-152-117 Batch 8 Clean Stockpile 5 4.79E-01 1.54E-01 <MDA <MDA SR-152-118 Batch 8 Clean Stockpile 6 3.69E-01 1.25E-01 <MDA <MDA SR-152-119 Batch 8 Clean Stockpile 7 5.42E-01 1.97E-01 <MDA <MDA SR-152-120 Batch 8 Clean Stockpile 8 3.38E-01 1.24E-01 <MDA <MDA SR-152-121 Batch 8 Clean Stockpile 9 4.44E-01 1.42E-01 <MDA <MDA SR-152-122 Batch 8 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-123 Batch 8 Clean Stockpile 11 3.14E-01 1.06E-01 <MDA <MDA SR-152-124 Batch 8 Clean Stockpile 12 3.67E-01 1.28E-01 <MDA <MDA SR-152-125 Batch 8 Clean Stockpile 13 3.66E-01 1.22E-01 <MDA <MDA SR-152-126 Batch 8 Clean Stockpile 14 4.05E-01 1.39E-01 <MDA <MDA SR-152-127 Batch 8 Clean Stockpile 15 3.25E-01 1.13E-01 <MDA <MDA SR-152-128 Batch 8 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-129 Batch 9 Clean Stockpile 1 2.97E-01 1.11E-01 <MDA <MDA SR-152-130 Batch 9 Clean Stockpile 2 3.51E-01 1.24E-01 <MDA <MDA SR-152-131 Batch 9 Clean Stockpile 3 3.81E-01 1.26E-01 <MDA <MDA SR-152-132 Batch 9 Clean Stockpile 4 3.49E-01 1.30E-01 <MDA <MDA SR-152-133 Batch 9 Clean Stockpile 5 3.26E-01 1.14E-01 <MDA <MDA SR-152-134 Batch 9 Clean Stockpile 6 4.30E-01 1.42E-01 <MDA <MDA SR-152-135 Batch 9 Clean Stockpile 7 3.97E-01 1.29E-01 <MDA <MDA SR-152-136 Batch 9 Clean Stockpile 8 3.26E-01 1.23E-01 <MDA <MDA SR-152-137 Batch 9 Clean Stockpile 9 2.08E-01 9.31E-02 <MDA <MDA SR-152-138 Batch 9 Clean Stockpile 10 3.38E-01 1.31E-01 <MDA <MDA SR-152-139 Batch 9 Clean Stockpile 11 3.03E-01 1.08E-01 <MDA <MDA SR-152-140 Batch 9 Clean Stockpile 12 2.41E-01 1.05E-01 <MDA <MDA SR-152-141 Batch 9 Clean Stockpile 13 3.15E-01 1.12E-01 <MDA <MDA SR-152-142 Batch 9 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-143 Batch 9 Clean Stockpile 15 4.88E-01 1.68E-01 <MDA <MDA SR-152-144 Batch 9 Clean Stockpile 16 5.36E-01 1.55E-01 <MDA <MDA SR-152-145 Batch 10 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-146 Batch 10 Clean Stockpile 2 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 6 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-147 Batch 10 Clean Stockpile 3 2.43E-01 9.94E-02 <MDA <MDA SR-152-148 Batch 10 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-149 Batch 10 Clean Stockpile 5 2.42E-01 9.92E-02 <MDA <MDA SR-152-150 Batch 10 Clean Stockpile 6 2.44E-01 1.09E-01 <MDA <MDA SR-152-151 Batch 10 Clean Stockpile 7 3.75E-01 1.24E-01 <MDA <MDA SR-152-152 Batch 10 Clean Stockpile 8 2.59E-01 1.08E-01 <MDA <MDA SR-152-153 Batch 10 Clean Stockpile 9 3.00E-01 1.08E-01 <MDA <MDA SR-152-154 Batch 10 Clean Stockpile 10 4.96E-01 1.50E-01 <MDA <MDA SR-152-155 Batch 10 Clean Stockpile 11 2.66E-01 1.01E-01 <MDA <MDA SR-152-156 Batch 10 Clean Stockpile 12 3.40E-01 1.19E-01 <MDA <MDA SR-152-157 Batch 10 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-158 Batch 10 Clean Stockpile 14 2.43E-01 9.75E-02 <MDA <MDA SR-152-159 Batch 10 Clean Stockpile 15 3.43E-01 1.34E-01 <MDA <MDA SR-152-160 Batch 10 Clean Stockpile 16 2.31E-01 1.01E-01 <MDA <MDA SR-152-161 Batch 11 Clean Stockpile 1 3.49E-01 1.35E-01 <MDA <MDA SR-152-162 Batch 11 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-163 Batch 11 Clean Stockpile 3 4.33E-01 1.31E-01 <MDA <MDA SR-152-164 Batch 11 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-165 Batch 11 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-166 Batch 11 Clean Stockpile 6 4.27E-01 1.39E-01 <MDA <MDA SR-152-167 Batch 11 Clean Stockpile 7 3.07E-01 1.12E-01 <MDA <MDA SR-152-168 Batch 11 Clean Stockpile 8 3.38E-01 1.22E-01 <MDA <MDA SR-152-169 Batch 11 Clean Stockpile 9 3.47E-01 1.16E-01 <MDA <MDA SR-152-170 Batch 11 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-171 Batch 11 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-172 Batch 11 Clean Stockpile 12 2.35E-01 1.03E-01 <MDA <MDA SR-152-173 Batch 11 Clean Stockpile 13 1.87E-01 9.10E-02 <MDA <MDA SR-152-174 Batch 11 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-175 Batch 11 Clean Stockpile 15 2.76E-01 1.05E-01 <MDA <MDA SR-152-176 Batch 11 Clean Stockpile 16 3.75E-01 1.35E-01 <MDA <MDA SR-152-177 Batch 12 Clean Stockpile 1 2.24E-01 9.38E-02 <MDA <MDA SR-152-178 Batch 12 Clean Stockpile 2 3.80E-01 1.31E-01 <MDA <MDA SR-152-179 Batch 12 Clean Stockpile 3 3.59E-01 1.22E-01 <MDA <MDA SR-152-180 Batch 12 Clean Stockpile 4 2.67E-01 1.05E-01 <MDA <MDA SR-152-181 Batch 12 Clean Stockpile 5 2.31E-01 1.06E-01 <MDA <MDA SR-152-182 Batch 12 Clean Stockpile 6 3.26E-01 1.11E-01 <MDA <MDA SR-152-183 Batch 12 Clean Stockpile 7 3.64E-01 1.25E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 7 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-184 Batch 12 Clean Stockpile 8 3.07E-01 1.11E-01 <MDA <MDA SR-152-185 Batch 12 Clean Stockpile 9 6.06E-01 1.61E-01 <MDA <MDA SR-152-186 Batch 12 Clean Stockpile 10 3.46E-01 1.21E-01 <MDA <MDA SR-152-187 Batch 12 Clean Stockpile 11 3.45E-01 1.33E-01 <MDA <MDA SR-152-188 Batch 12 Clean Stockpile 12 2.70E-01 8.62E-02 <MDA <MDA SR-152-189 Batch 12 Clean Stockpile 13 4.02E-01 1.34E-01 <MDA <MDA SR-152-190 Batch 12 Clean Stockpile 14 2.15E-01 9.61E-02 <MDA <MDA SR-152-191 Batch 12 Clean Stockpile 15 2.48E-01 1.06E-01 <MDA <MDA SR-152-192 Batch 12 Clean Stockpile 16 3.07E-01 1.11E-01 <MDA <MDA SR-152-193 Batch 12 Clean Stockpile 17 3.49E-01 1.22E-01 <MDA <MDA SR-152-194 Batch 12 Clean Stockpile 18 1.92E-01 8.82E-02 <MDA <MDA SR-152-195 Batch 12 Clean Stockpile 19 2.44E-01 1.02E-01 <MDA <MDA SR-152-196 Batch 13 Clean Stockpile 1 2.68E-01 1.20E-01 <MDA <MDA SR-152-197 Batch 13 Clean Stockpile 2 3.15E-01 1.43E-01 <MDA <MDA SR-152-198 Batch 13 Clean Stockpile 3 3.27E-01 1.20E-01 <MDA <MDA SR-152-199 Batch 13 Clean Stockpile 4 2.44E-01 9.77E-02 <MDA <MDA SR-152-200 Batch 13 Clean Stockpile 5 3.53E-01 1.27E-01 <MDA <MDA SR-152-201 Batch 13 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-202 Batch 13 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-203 Batch 13 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-204 Batch 13 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-205 Batch 13 Clean Stockpile 10 2.66E-01 8.02E-02 <MDA <MDA SR-152-206 Batch 13 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-207 Batch 13 Clean Stockpile 12 3.04E-01 1.15E-01 <MDA <MDA SR-152-208 Batch 13 Clean Stockpile 13 2.30E-01 9.81E-02 <MDA <MDA SR-152-209 Batch 13 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-210 Batch 13 Clean Stockpile 15 2.70E-01 9.68E-02 <MDA <MDA SR-152-211 Batch 13 Clean Stockpile 16 3.37E-01 1.20E-01 <MDA <MDA SR-152-212 Batch 14 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-213 Batch 14 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-214 Batch 14 Clean Stockpile 3 3.10E-01 1.12E-01 <MDA <MDA SR-152-215 Batch 14 Clean Stockpile 4 2.70E-01 1.08E-01 <MDA <MDA SR-152-216 Batch 14 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-217 Batch 14 Clean Stockpile 6 3.04E-01 1.13E-01 <MDA <MDA SR-152-218 Batch 14 Clean Stockpile 7 2.70E-01 1.02E-01 <MDA <MDA SR-152-219 Batch 14 Clean Stockpile 8 2.07E-01 9.50E-02 <MDA <MDA SR-152-220 Batch 14 Clean Stockpile 9 2.96E-01 1.21E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 8 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-221 Batch 14 Clean Stockpile 10 2.52E-01 1.18E-01 <MDA <MDA SR-152-222 Batch 14 Clean Stockpile 11 2.31E-01 9.63E-02 <MDA <MDA SR-152-223 Batch 14 Clean Stockpile 12 2.31E-01 1.04E-01 <MDA <MDA SR-152-224 Batch 14 Clean Stockpile 13 4.07E-01 1.34E-01 <MDA <MDA SR-152-225 Batch 14 Clean Stockpile 14 2.92E-01 1.13E-01 <MDA <MDA SR-152-226 Batch 14 Clean Stockpile 15 3.44E-01 1.20E-01 <MDA <MDA SR-152-227 Batch 14 Clean Stockpile 16 3.12E-01 1.16E-01 <MDA <MDA SR-152-228 Batch 15 Clean Stockpile 1 2.91E-01 1.15E-01 <MDA <MDA SR-152-229 Batch 15 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-230 Batch 15 Clean Stockpile 3 3.60E-01 1.26E-01 <MDA <MDA SR-152-231 Batch 15 Clean Stockpile 4 2.55E-01 1.06E-01 <MDA <MDA SR-152-232 Batch 15 Clean Stockpile 5 2.81E-01 1.03E-01 <MDA <MDA SR-152-233 Batch 15 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-234 Batch 15 Clean Stockpile 7 4.09E-01 1.39E-01 <MDA <MDA SR-152-235 Batch 15 Clean Stockpile 8 3.04E-01 1.08E-01 <MDA <MDA SR-152-236 Batch 15 Clean Stockpile 9 3.38E-01 1.24E-01 <MDA <MDA SR-152-237 Batch 15 Clean Stockpile 10 2.45E-01 1.05E-01 <MDA <MDA SR-152-238 Batch 15 Clean Stockpile 11 3.57E-01 1.25E-01 <MDA <MDA SR-152-239 Batch 15 Clean Stockpile 12 2.34E-01 1.05E-01 <MDA <MDA SR-152-240 Batch 15 Clean Stockpile 13 3.08E-01 1.15E-01 <MDA <MDA SR-152-241 Batch 15 Clean Stockpile 14 2.65E-01 1.28E-01 <MDA <MDA SR-152-242 Batch 15 Clean Stockpile 15 2.34E-01 1.00E-01 <MDA <MDA SR-152-243 Batch 15 Clean Stockpile 16 3.35E-01 1.19E-01 <MDA <MDA SR-152-244 Batch 16 Clean Stockpile 1 3.10E-01 1.17E-01 <MDA <MDA SR-152-245 Batch 16 Clean Stockpile 2 3.21E-01 1.18E-01 <MDA <MDA SR-152-246 Batch 16 Clean Stockpile 3 3.99E-01 1.32E-01 <MDA <MDA SR-152-247 Batch 16 Clean Stockpile 4 2.85E-01 1.08E-01 <MDA <MDA SR-152-248 Batch 16 Clean Stockpile 5 3.38E-01 1.22E-01 <MDA <MDA SR-152-249 Batch 16 Clean Stockpile 6 4.99E-01 1.42E-01 <MDA <MDA SR-152-250 Batch 16 Clean Stockpile 7 4.08E-01 1.29E-01 <MDA <MDA SR-152-251 Batch 16 Clean Stockpile 8 3.04E-01 1.08E-01 <MDA <MDA SR-152-252 Batch 16 Clean Stockpile 9 3.06E-01 1.16E-01 <MDA <MDA SR-152-253 Batch 16 Clean Stockpile 10 4.37E-01 1.35E-01 <MDA <MDA SR-152-254 Batch 16 Clean Stockpile 11 3.02E-01 1.14E-01 <MDA <MDA SR-152-255 Batch 16 Clean Stockpile 12 3.21E-01 1.10E-01 <MDA <MDA SR-152-256 Batch 16 Clean Stockpile 13 2.98E-01 1.37E-01 <MDA <MDA SR-152-257 Batch 16 Clean Stockpile 14 2.71E-01 1.03E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 9 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-258 Batch 16 Clean Stockpile 15 2.43E-01 1.15E-01 <MDA <MDA SR-152-259 Batch 16 Clean Stockpile 16 2.90E-01 1.05E-01 <MDA <MDA SR-152-260 Batch 17 Clean Stockpile 1 2.67E-01 1.07E-01 <MDA <MDA SR-152-261 Batch 17 Clean Stockpile 2 2.66E-01 1.09E-01 <MDA <MDA SR-152-262 Batch 17 Clean Stockpile 3 2.91E-01 1.17E-01 <MDA <MDA SR-152-263 Batch 17 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-264 Batch 17 Clean Stockpile 5 3.09E-01 1.15E-01 <MDA <MDA SR-152-265 Batch 17 Clean Stockpile 6 2.67E-01 1.14E-01 <MDA <MDA SR-152-266 Batch 17 Clean Stockpile 7 2.67E-01 1.03E-01 <MDA <MDA SR-152-267 Batch 17 Clean Stockpile 8 2.61E-01 1.07E-01 <MDA <MDA SR-152-268 Batch 17 Clean Stockpile 9 3.21E-01 1.16E-01 <MDA <MDA SR-152-269 Batch 17 Clean Stockpile 10 4.65E-01 1.75E-01 <MDA <MDA SR-152-270 Batch 17 Clean Stockpile 11 3.84E-01 1.23E-01 <MDA <MDA SR-152-271 Batch 17 Clean Stockpile 12 3.19E-01 1.25E-01 <MDA <MDA SR-152-272 Batch 17 Clean Stockpile 13 2.93E-01 1.13E-01 <MDA <MDA SR-152-273 Batch 17 Clean Stockpile 14 4.61E-01 1.37E-01 <MDA <MDA SR-152-274 Batch 17 Clean Stockpile 15 3.06E-01 1.14E-01 <MDA <MDA SR-152-275 Batch 17 Clean Stockpile 16 2.41E-01 1.03E-01 <MDA <MDA SR-152-276 Batch 18 Clean Stockpile 1 3.19E-01 1.15E-01 <MDA <MDA SR-152-277 Batch 18 Clean Stockpile 2 3.77E-01 1.20E-01 <MDA <MDA SR-152-278 Batch 18 Clean Stockpile 3 2.06E-01 1.00E-01 <MDA <MDA SR-152-279 Batch 18 Clean Stockpile 4 2.54E-01 1.26E-01 <MDA <MDA SR-152-280 Batch 18 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-281 Batch 18 Clean Stockpile 6 3.05E-01 1.14E-01 <MDA <MDA SR-152-282 Batch 18 Clean Stockpile 7 2.71E-01 1.11E-01 <MDA <MDA SR-152-283 Batch 18 Clean Stockpile 8 3.51E-01 1.21E-01 <MDA <MDA SR-152-284 Batch 18 Clean Stockpile 9 2.87E-01 1.20E-01 <MDA <MDA SR-152-285 Batch 18 Clean Stockpile 10 1.74E-01 8.45E-02 <MDA <MDA SR-152-286 Batch 18 Clean Stockpile 11 3.87E-01 1.33E-01 <MDA <MDA SR-152-287 Batch 18 Clean Stockpile 12 4.35E-01 1.35E-01 <MDA <MDA SR-152-288 Batch 18 Clean Stockpile 13 3.01E-01 1.21E-01 <MDA <MDA SR-152-289 Batch 18 Clean Stockpile 14 4.20E-01 1.32E-01 <MDA <MDA SR-152-290 Batch 18 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-16 290R Batch 18 Clean Stockpile 2.69E-01 9.29E-02 <MDA <MDA SR-152-291 Batch 18 Clean Stockpile 1 2.28E-01 9.51E-02 <MDA <MDA SR-152-292 Batch 19 Clean Stockpile 2 2.58E-01 1.01E-01 <MDA <MDA SR-152-293 Batch 19 Clean Stockpile 3 2.70E-01 1.06E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 10 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-294 Batch 19 Clean Stockpile 4 2.60E-01 1.07E-01 <MDA <MDA SR-152-295 Batch 19 Clean Stockpile 5 2.48E-01 9.75E-02 <MDA <MDA SR-152-296 Batch 19 Clean Stockpile 6 2.54E-01 9.99E-02 <MDA <MDA SR-152-297 Batch 19 Clean Stockpile 7 3.86E-01 1.24E-01 <MDA <MDA SR-152-298 Batch 19 Clean Stockpile 8 3.13E-01 1.19E-01 <MDA <MDA SR-152-299 Batch 19 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-300 Batch 19 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-301 Batch 19 Clean Stockpile 11 2.53E-01 9.74E-02 <MDA <MDA SR-152-302 Batch 19 Clean Stockpile 12 2.91E-01 1.16E-01 <MDA <MDA SR-152-303 Batch 19 Clean Stockpile 13 2.90E-01 1.12E-01 <MDA <MDA SR-152-304 Batch 19 Clean Stockpile 14 3.21E-01 1.17E-01 <MDA <MDA SR-152-305 Batch 19 Clean Stockpile 15 3.02E-01 1.11E-01 <MDA <MDA SR-152-306 Batch 19 Clean Stockpile 15R 2.75E-01 1.08E-01 <MDA <MDA SR-152-307 Batch 19 Clean Stockpile 16 2.33E-01 9.54E-02 <MDA <MDA SR-152-308 Batch 20 Clean Stockpile 1 3.15E-01 1.36E-01 <MDA <MDA SR-152-309 Batch 20 Clean Stockpile 2 1.89E-01 8.93E-02 <MDA <MDA SR-152-310 Batch 20 Clean Stockpile 3 3.08E-01 1.19E-01 <MDA <MDA SR-152-311 Batch 20 Clean Stockpile 4 2.08E-01 9.57E-02 <MDA <MDA SR-152-312 Batch 20 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-313 Batch 20 Clean Stockpile 6 2.23E-01 9.52E-02 <MDA <MDA SR-152-314 Batch 20 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-315 Batch 20 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-316 Batch 20 Clean Stockpile 9 2.11E-01 9.97E-02 <MDA <MDA SR-152-317 Batch 20 Clean Stockpile 10 1.98E-01 9.12E-02 <MDA <MDA SR-152-318 Batch 20 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-319 Batch 20 Clean Stockpile 12 3.08E-01 1.09E-01 <MDA <MDA SR-152-320 Batch 20 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-321 Batch 20 Clean Stockpile 14 2.76E-01 1.11E-01 <MDA <MDA SR-152-322 Batch 20 Clean Stockpile 15 2.71E-01 1.13E-01 <MDA <MDA SR-152-323 Batch 20 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-16R 323R Batch 20 Clean Stockpile 2.14E-01 1.03E-01 <MDA <MDA SR-152-324 Batch 21 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-325 Batch 21 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-326 Batch 21 Clean Stockpile 3 2.31E-01 1.01E-01 <MDA <MDA SR-152-327 Batch 21 Clean Stockpile 4 2.99E-01 1.09E-01 <MDA <MDA SR-152-328 Batch 21 Clean Stockpile 5 3.44E-01 1.30E-01 <MDA <MDA SR-152-329 Batch 21 Clean Stockpile 6 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 11 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-330 Batch 21 Clean Stockpile 7 2.57E-01 1.03E-01 <MDA <MDA SR-152-331 Batch 21 Clean Stockpile 8 2.92E-01 1.15E-01 <MDA <MDA SR-152-332 Batch 21 Clean Stockpile 9 2.33E-01 1.02E-01 <MDA <MDA SR-152-333 Batch 21 Clean Stockpile 10 2.74E-01 1.14E-01 <MDA <MDA SR-152-334 Batch 21 Clean Stockpile 11 3.64E-01 1.38E-01 <MDA <MDA SR-152-335 Batch 21 Clean Stockpile 12 2.58E-01 1.06E-01 <MDA <MDA SR-152-336 Batch 21 Clean Stockpile 13 2.86E-01 1.14E-01 <MDA <MDA SR-152-337 Batch 21 Clean Stockpile 14 2.69E-01 1.08E-01 <MDA <MDA SR-152-338 Batch 21 Clean Stockpile 15 3.25E-01 1.23E-01 <MDA <MDA SR-152-339 Batch 21 Clean Stockpile 16 3.28E-01 1.18E-01 <MDA <MDA SR-152-340 Batch 22 Clean Stockpile 1 2.64E-01 9.99E-02 <MDA <MDA SR-152-341 Batch 22 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-342 Batch 22 Clean Stockpile 3 4.11E-01 1.35E-01 <MDA <MDA SR-152-343 Batch 22 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-344 Batch 22 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-345 Batch 22 Clean Stockpile 6 2.11E-01 9.00E-02 <MDA <MDA SR-152-346 Batch 22 Clean Stockpile 7 2.57E-01 1.10E-01 <MDA <MDA SR-152-347 Batch 22 Clean Stockpile 8 3.26E-01 1.14E-01 <MDA <MDA SR-152-348 Batch 22 Clean Stockpile 9 2.16E-01 9.67E-02 <MDA <MDA SR-152-349 Batch 22 Clean Stockpile 10 3.99E-01 1.22E-01 <MDA <MDA SR-152-350 Batch 22 Clean Stockpile 11 3.01E-01 1.21E-01 <MDA <MDA SR-152-351 Batch 22 Clean Stockpile 12 2.74E-01 1.06E-01 <MDA <MDA SR-152-352 Batch 22 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-353 Batch 22 Clean Stockpile 14 2.83E-01 1.04E-01 <MDA <MDA SR-152-354 Batch 22 Clean Stockpile 15 2.31E-01 1.04E-01 <MDA <MDA SR-152-355 Batch 22 Clean Stockpile 16 2.98E-01 1.07E-01 <MDA <MDA SR-152-356 Batch 23 Clean Stockpile 1 2.89E-01 1.13E-01 <MDA <MDA SR-152-357 Batch 23 Clean Stockpile 2 2.07E-01 9.07E-02 <MDA <MDA SR-152-358 Batch 23 Clean Stockpile 3 2.51E-01 1.03E-01 <MDA <MDA SR-152-359 Batch 23 Clean Stockpile 4 2.48E-01 1.08E-01 <MDA <MDA SR-152-360 Batch 23 Clean Stockpile 5 1.91E-01 9.00E-02 <MDA <MDA SR-152-361 Batch 23 Clean Stockpile 6 2.85E-01 1.19E-01 <MDA <MDA SR-152-362 Batch 23 Clean Stockpile 7 2.94E-01 1.08E-01 <MDA <MDA SR-152-363 Batch 23 Clean Stockpile 8 2.80E-01 1.38E-01 <MDA <MDA SR-152-364 Batch 23 Clean Stockpile 9 3.09E-01 1.17E-01 <MDA <MDA SR-152-365 Batch 23 Clean Stockpile 10 4.07E-01 1.22E-01 <MDA <MDA SR-152-366 Batch 23 Clean Stockpile 11 3.40E-01 1.29E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 12 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-367 Batch 23 Clean Stockpile 12 3.13E-01 1.13E-01 <MDA <MDA SR-152-368 Batch 23 Clean Stockpile 13 2.88E-01 1.04E-01 <MDA <MDA SR-152-369 Batch 23 Clean Stockpile 14 2.11E-01 8.82E-02 <MDA <MDA SR-152-370 Batch 23 Clean Stockpile 15 3.66E-01 1.18E-01 <MDA <MDA SR-152-371 Batch 23 Clean Stockpile 16 3.03E-01 1.21E-01 <MDA <MDA SR-152-372 Batch 23 Clean Stockpile 1 3.74E-01 1.23E-01 <MDA <MDA SR-152-373 Batch 23 Clean Stockpile 2 2.86E-01 1.16E-01 <MDA <MDA SR-152-414 Batch 23 Clean Stockpile 3 2.85E-01 1.31E-01 <MDA <MDA SR-152-415 Batch 23 Clean Stockpile 4 3.19E-01 1.15E-01 <MDA <MDA SR-152-374 Batch 24 Clean Stockpile 5 2.43E-01 1.04E-01 <MDA <MDA SR-152-375 Batch 24 Clean Stockpile 6 3.94E-01 1.27E-01 <MDA <MDA SR-152-376 Batch 24 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-377 Batch 24 Clean Stockpile 8 3.53E-01 1.18E-01 <MDA <MDA SR-152-378 Batch 24 Clean Stockpile 9 3.85E-01 1.51E-01 <MDA <MDA SR-152-379 Batch 24 Clean Stockpile 10 3.21E-01 1.12E-01 <MDA <MDA SR-152-380 Batch 24 Clean Stockpile 11 3.79E-01 1.39E-01 <MDA <MDA SR-152-381 Batch 24 Clean Stockpile 12 2.78E-01 1.09E-01 <MDA <MDA SR-152-382 Batch 24 Clean Stockpile 13 2.56E-01 9.88E-02 <MDA <MDA SR-152-383 Batch 24 Clean Stockpile 14 3.79E-01 1.34E-01 <MDA <MDA SR-152-384 Batch 24 Clean Stockpile 15 3.70E-01 1.19E-01 <MDA <MDA SR-152-385 Batch 24 Clean Stockpile 16 3.70E-01 1.25E-01 <MDA <MDA SR-152-386 Batch 24 Clean Stockpile 17 3.69E-01 1.23E-01 <MDA <MDA SR-152-387 Batch 24 Clean Stockpile 18 3.43E-01 1.20E-01 <MDA <MDA SR-152-388 Batch 24 Clean Stockpile 19 3.35E-01 9.12E-02 <MDA <MDA SR-152-389 Batch 24 Clean Stockpile 20 2.35E-01 1.15E-01 <MDA <MDA SR-152-390 Batch 25 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-391 Batch 25 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-392 Batch 25 Clean Stockpile 3 4.46E-01 1.33E-01 <MDA <MDA SR-152-393 Batch 25 Clean Stockpile 4 3.93E-01 1.26E-01 <MDA <MDA SR-152-394 Batch 25 Clean Stockpile 5 4.11E-01 1.36E-01 <MDA <MDA SR-152-395 Batch 25 Clean Stockpile 6 4.72E-01 1.38E-01 <MDA <MDA SR-152-396 Batch 25 Clean Stockpile 7 5.00E-01 1.48E-01 <MDA <MDA SR-152-397 Batch 25 Clean Stockpile 8 7.05E-01 1.77E-01 <MDA <MDA SR-152-398 Batch 25 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-399 Batch 25 Clean Stockpile 10 4.97E-01 1.52E-01 <MDA <MDA SR-152-400 Batch 25 Clean Stockpile 11 4.06E-01 1.55E-01 <MDA <MDA SR-152-401 Batch 25 Clean Stockpile 12 5.17E-01 1.66E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 13 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-402 Batch 25 Clean Stockpile 13 4.82E-01 1.49E-01 <MDA <MDA SR-152-403 Batch 25 Clean Stockpile 14 6.27E-01 1.58E-01 <MDA <MDA SR-152-404 Batch 25 Clean Stockpile 15 4.92E-01 1.41E-01 <MDA <MDA SR-152-405 Batch 25 Clean Stockpile 16 5.04E-01 1.52E-01 <MDA <MDA SR-152-406 Batch 26 Clean Stockpile 1 3.95E-01 1.58E-01 <MDA <MDA SR-152-407 Batch 26 Clean Stockpile 2 3.04E-01 1.10E-01 <MDA <MDA SR-152-408 Batch 26 Clean Stockpile 3 3.36E-01 1.40E-01 <MDA <MDA SR-152-409 Batch 26 Clean Stockpile 4 3.85E-01 1.27E-01 <MDA <MDA SR-152-410 Batch 26 Clean Stockpile 5 4.38E-01 1.43E-01 <MDA <MDA SR-152-411 Batch 26 Clean Stockpile 6 5.15E-01 1.48E-01 <MDA <MDA SR-152-412 Batch 26 Clean Stockpile 7 4.95E-01 1.66E-01 <MDA <MDA SR-152-413 Batch 26 Clean Stockpile 8 6.69E-01 1.62E-01 <MDA <MDA SR-152-416 Batch 26 Clean Stockpile 9 6.54E-01 1.74E-01 <MDA <MDA SR-152-417 Batch 26 Clean Stockpile 10 3.92E-01 1.53E-01 <MDA <MDA SR-152-418 Batch 26 Clean Stockpile 11 5.32E-01 1.54E-01 <MDA <MDA SR-152-419 Batch 26 Clean Stockpile 12 6.78E-01 1.73E-01 <MDA <MDA SR-152-420 Batch 26 Clean Stockpile 13 5.17E-01 1.48E-01 <MDA <MDA SR-152-421 Batch 26 Clean Stockpile 14 4.71E-01 1.38E-01 <MDA <MDA SR-152-422 Batch 26 Clean Stockpile 15 5.35E-01 1.66E-01 <MDA <MDA SR-152-423 Batch 26 Clean Stockpile 16 5.69E-01 1.60E-01 <MDA <MDA SR-152-424 Batch 27 Clean Stockpile 1 3.98E-01 1.35E-01 <MDA <MDA SR-152-425 Batch 27 Clean Stockpile 2 5.00E-01 1.65E-01 <MDA <MDA SR-152-426 Batch 27 Clean Stockpile 3 3.93E-01 1.35E-01 <MDA <MDA SR-152-427 Batch 27 Clean Stockpile 4 3.93E-01 1.25E-01 <MDA <MDA SR-152-428 Batch 27 Clean Stockpile 5 3.33E-01 1.20E-01 <MDA <MDA SR-152-429 Batch 27 Clean Stockpile 6 3.92E-01 1.29E-01 <MDA <MDA SR-152-430 Batch 27 Clean Stockpile 7 5.14E-01 1.70E-01 <MDA <MDA SR-152-431 Batch 27 Clean Stockpile 8 3.57E-01 1.27E-01 <MDA <MDA SR-152-432 Batch 27 Clean Stockpile 9 3.48E-01 1.61E-01 <MDA <MDA SR-152-433 Batch 27 Clean Stockpile 10 5.13E-01 1.44E-01 <MDA <MDA SR-152-434 Batch 27 Clean Stockpile 11 4.19E-01 1.33E-01 <MDA <MDA SR-152-435 Batch 27 Clean Stockpile 12 3.60E-01 1.19E-01 <MDA <MDA SR-152-436 Batch 27 Clean Stockpile 13 3.73E-01 1.30E-01 <MDA <MDA SR-152-437 Batch 27 Clean Stockpile 14 3.92E-01 1.26E-01 <MDA <MDA SR-152-438 Batch 27 Clean Stockpile 15 4.31E-01 9.77E-02 <MDA <MDA SR-152-439 Batch 27 Clean Stockpile 16 4.30E-01 1.29E-01 <MDA <MDA SR-152-440 Batch 28 Clean Stockpile 1 4.28E-01 1.37E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 14 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-441 Batch 28 Clean Stockpile 2 4.33E-01 1.31E-01 <MDA <MDA SR-152-442 Batch 28 Clean Stockpile 3 4.45E-01 1.33E-01 <MDA <MDA SR-152-443 Batch 28 Clean Stockpile 4 3.39E-01 1.16E-01 <MDA <MDA SR-152-444 Batch 28 Clean Stockpile 5 3.53E-01 1.16E-01 <MDA <MDA SR-152-445 Batch 28 Clean Stockpile 6 3.01E-01 1.08E-01 <MDA <MDA SR-152-446 Batch 28 Clean Stockpile 7 3.51E-01 1.17E-01 <MDA <MDA SR-152-447 Batch 28 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-448 Batch 28 Clean Stockpile 9 6.16E-01 1.68E-01 <MDA <MDA SR-152-449 Batch 28 Clean Stockpile 10 2.36E-01 1.03E-01 <MDA <MDA SR-152-450 Batch 28 Clean Stockpile 11 4.26E-01 1.33E-01 <MDA <MDA SR-152-451 Batch 28 Clean Stockpile 12 5.02E-01 1.43E-01 <MDA <MDA SR-152-452 Batch 28 Clean Stockpile 13 4.51E-01 1.60E-01 <MDA <MDA SR-152-453 Batch 28 Clean Stockpile 14 4.51E-01 1.38E-01 <MDA <MDA SR-152-454 Batch 28 Clean Stockpile 15 6.61E-01 1.76E-01 <MDA <MDA SR-152-455 Batch 28 Clean Stockpile 16 5.74E-01 1.56E-01 <MDA <MDA SR-152-456 Batch 29 Clean Stockpile 1 4.25E-01 1.35E-01 <MDA <MDA SR-152-457 Batch 29 Clean Stockpile 2 5.32E-01 1.76E-01 <MDA <MDA SR-152-458 Batch 29 Clean Stockpile 3 6.14E-01 1.66E-01 <MDA <MDA SR-152-459 Batch 29 Clean Stockpile 4 7.09E-01 1.73E-01 <MDA <MDA SR-152-460 Batch 29 Clean Stockpile 5 6.57E-01 1.72E-01 <MDA <MDA SR-152-461 Batch 29 Clean Stockpile 6 4.82E-01 1.46E-01 <MDA <MDA SR-152-462 Batch 29 Clean Stockpile 7 5.43E-01 1.50E-01 <MDA <MDA SR-152-463 Batch 29 Clean Stockpile 8 4.32E-01 1.39E-01 <MDA <MDA SR-152-464 Batch 29 Clean Stockpile 9 4.69E-01 1.44E-01 <MDA <MDA SR-152-465 Batch 29 Clean Stockpile 10 4.08E-01 1.31E-01 <MDA <MDA SR-152-466 Batch 29 Clean Stockpile 11 4.48E-01 1.36E-01 <MDA <MDA SR-152-467 Batch 29 Clean Stockpile 12 4.19E-01 1.27E-01 <MDA <MDA SR-152-468 Batch 29 Clean Stockpile 13 5.49E-01 1.54E-01 <MDA <MDA SR-152-469 Batch 29 Clean Stockpile 14 3.64E-01 1.20E-01 <MDA <MDA SR-152-470 Batch 29 Clean Stockpile 15 4.26E-01 1.29E-01 <MDA <MDA SR-152-471 Batch 29 Clean Stockpile 16 3.31E-01 1.17E-01 <MDA <MDA SR-152-472 Batch 30 Clean Stockpile 1 2.26E-01 9.07E-02 <MDA <MDA SR-152-473 Batch 30 Clean Stockpile 2 5.06E-01 1.47E-01 <MDA <MDA SR-152-474 Batch 30 Clean Stockpile 3 2.44E-01 9.76E-02 <MDA <MDA SR-152-475 Batch 30 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-476 Batch 30 Clean Stockpile 5 4.29E-01 1.31E-01 <MDA <MDA SR-152-477 Batch 30 Clean Stockpile 6 2.66E-01 9.72E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 15 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-478 Batch 30 Clean Stockpile 7 2.98E-01 1.05E-01 <MDA <MDA SR-152-479 Batch 30 Clean Stockpile 8 3.45E-01 1.12E-01 <MDA <MDA SR-152-480 Batch 30 Clean Stockpile 9 3.24E-01 1.12E-01 <MDA <MDA SR-152-481 Batch 30 Clean Stockpile 10 3.70E-01 1.16E-01 <MDA <MDA SR-152-482 Batch 30 Clean Stockpile 11 2.69E-01 9.85E-02 <MDA <MDA SR-152-483 Batch 30 Clean Stockpile 12 3.01E-01 1.09E-01 <MDA <MDA SR-152-484 Batch 30 Clean Stockpile 13 2.86E-01 1.03E-01 <MDA <MDA SR-152-485 Batch 30 Clean Stockpile 14 2.04E-01 8.33E-02 <MDA <MDA SR-152-486 Batch 30 Clean Stockpile 15 4.45E-01 1.41E-01 <MDA <MDA SR-152-487 Batch 30 Clean Stockpile 16 4.24E-01 1.39E-01 <MDA <MDA SR-152-488 Batch 31 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-489 Batch 31 Clean Stockpile 2 4.66E-01 1.48E-01 <MDA <MDA SR-152-490 Batch 31 Clean Stockpile 3 6.66E-01 1.82E-01 <MDA <MDA SR-152-491 Batch 31 Clean Stockpile 4 4.51E-01 1.40E-01 <MDA <MDA SR-152-492 Batch 31 Clean Stockpile 5 3.35E-01 1.29E-01 <MDA <MDA SR-152-493 Batch 31 Clean Stockpile 6 3.35E-01 1.35E-01 <MDA <MDA SR-152-494 Batch 31 Clean Stockpile 7 3.40E-01 1.22E-01 <MDA <MDA SR-152-495 Batch 31 Clean Stockpile 8 3.12E-01 1.14E-01 <MDA <MDA SR-152-496 Batch 31 Clean Stockpile 9 4.42E-01 1.51E-01 <MDA <MDA SR-152-497 Batch 31 Clean Stockpile 10 4.76E-01 1.42E-01 <MDA <MDA SR-152-498 Batch 31 Clean Stockpile 11 3.61E-01 1.26E-01 <MDA <MDA SR-152-499 Batch 31 Clean Stockpile 12 2.69E-01 1.04E-01 <MDA <MDA SR-152-500 Batch 31 Clean Stockpile 13 3.56E-01 1.30E-01 <MDA <MDA SR-152-501 Batch 31 Clean Stockpile 14 4.40E-01 1.36E-01 <MDA <MDA SR-152-502 Batch 31 Clean Stockpile 15 2.95E-01 1.38E-01 <MDA <MDA SR-152-503 Batch 31 Clean Stockpile 16 4.16E-01 1.30E-01 <MDA <MDA SR-152-504 Batch 32 Clean Stockpile 1 3.87E-01 1.37E-01 <MDA <MDA SR-152-505 Batch 32 Clean Stockpile 2 5.18E-01 1.22E-01 <MDA <MDA SR-152-506 Batch 32 Clean Stockpile 3 3.81E-01 1.21E-01 <MDA <MDA SR-152-507 Batch 32 Clean Stockpile 4 2.78E-01 1.14E-01 <MDA <MDA SR-152-508 Batch 32 Clean Stockpile 5 4.69E-01 1.40E-01 <MDA <MDA SR-152-509 Batch 32 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-510 Batch 32 Clean Stockpile 7 3.32E-01 1.16E-01 <MDA <MDA SR-152-511 Batch 32 Clean Stockpile 8 3.92E-01 1.39E-01 <MDA <MDA SR-152-512 Batch 32 Clean Stockpile 9 3.00E-01 1.27E-01 <MDA <MDA SR-152-513 Batch 32 Clean Stockpile 10 3.87E-01 1.33E-01 <MDA <MDA SR-152-514 Batch 32 Clean Stockpile 11 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 16 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-515 Batch 32 Clean Stockpile 12 3.28E-01 1.22E-01 <MDA <MDA SR-152-516 Batch 32 Clean Stockpile 13 3.35E-01 1.17E-01 <MDA <MDA SR-152-517 Batch 32 Clean Stockpile 14 3.75E-01 1.33E-01 <MDA <MDA SR-152-518 Batch 32 Clean Stockpile 15 4.89E-01 1.42E-01 <MDA <MDA SR-152-519 Batch 32 Clean Stockpile 16 4.15E-01 1.35E-01 <MDA <MDA SR-152-520 Batch 33 Clean Stockpile 1 2.90E-01 1.19E-01 <MDA <MDA SR-152-521 Batch 33 Clean Stockpile 2 4.45E-01 1.38E-01 <MDA <MDA SR-152-522 Batch 33 Clean Stockpile 3 3.95E-01 1.34E-01 <MDA <MDA SR-152-523 Batch 33 Clean Stockpile 4 3.46E-01 1.23E-01 <MDA <MDA SR-152-524 Batch 33 Clean Stockpile 5 4.20E-01 1.41E-01 <MDA <MDA SR-152-525 Batch 33 Clean Stockpile 6 5.30E-01 1.48E-01 <MDA <MDA SR-152-526 Batch 33 Clean Stockpile 7 4.00E-01 1.32E-01 <MDA <MDA SR-152-527 Batch 33 Clean Stockpile 8 4.21E-01 1.29E-01 <MDA <MDA SR-152-528 Batch 33 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-529 Batch 33 Clean Stockpile 10 3.41E-01 1.17E-01 <MDA <MDA SR-152-530 Batch 33 Clean Stockpile 11 3.93E-01 1.33E-01 <MDA <MDA SR-152-531 Batch 33 Clean Stockpile 12 3.54E-01 1.22E-01 <MDA <MDA SR-152-532 Batch 33 Clean Stockpile 13 3.77E-01 1.23E-01 <MDA <MDA SR-152-533 Batch 33 Clean Stockpile 14 3.43E-01 1.22E-01 <MDA <MDA SR-152-534 Batch 33 Clean Stockpile 15 3.28E-01 1.22E-01 <MDA <MDA SR-152-535 Batch 33 Clean Stockpile 16 4.40E-01 9.72E-02 <MDA <MDA SR-152-536 Batch 34 Clean Stockpile 1 3.65E-01 1.30E-01 <MDA <MDA SR-152-537 Batch 34 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-538 Batch 34 Clean Stockpile 3 5.83E-01 1.59E-01 <MDA <MDA SR-152-539 Batch 34 Clean Stockpile 4 4.06E-01 1.29E-01 <MDA <MDA SR-152-540 Batch 34 Clean Stockpile 5 4.35E-01 1.49E-01 <MDA <MDA SR-152-541 Batch 34 Clean Stockpile 6 3.72E-01 1.28E-01 <MDA <MDA SR-152-542 Batch 34 Clean Stockpile 7 2.82E-01 1.11E-01 <MDA <MDA SR-152-543 Batch 34 Clean Stockpile 8 3.44E-01 1.18E-01 <MDA <MDA SR-152-544 Batch 34 Clean Stockpile 9 4.01E-01 1.34E-01 <MDA <MDA SR-152-545 Batch 34 Clean Stockpile 10 4.08E-01 1.31E-01 <MDA <MDA SR-152-546 Batch 34 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-547 Batch 34 Clean Stockpile 12 3.04E-01 1.15E-01 <MDA <MDA SR-152-548 Batch 34 Clean Stockpile 13 3.63E-01 1.31E-01 <MDA <MDA SR-152-549 Batch 34 Clean Stockpile 14 3.01E-01 1.12E-01 <MDA <MDA SR-152-550 Batch 34 Clean Stockpile 15 3.50E-01 1.24E-01 <MDA <MDA SR-152-551 Batch 34 Clean Stockpile 16 3.13E-01 1.17E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 17 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-552 Batch 35 Clean Stockpile 1 4.00E-01 1.30E-01 <MDA <MDA SR-152-553 Batch 35 Clean Stockpile 2 3.74E-01 1.25E-01 <MDA <MDA SR-152-554 Batch 35 Clean Stockpile 3 3.20E-01 1.19E-01 <MDA <MDA SR-152-555 Batch 35 Clean Stockpile 4 3.20E-01 1.10E-01 <MDA <MDA SR-152-556 Batch 35 Clean Stockpile 5 4.02E-01 1.43E-01 <MDA <MDA SR-152-557 Batch 35 Clean Stockpile 6 3.58E-01 1.15E-01 <MDA <MDA SR-152-558 Batch 35 Clean Stockpile 7 3.22E-01 1.20E-01 <MDA <MDA SR-152-559 Batch 35 Clean Stockpile 8 3.28E-01 1.11E-01 <MDA <MDA SR-152-560 Batch 35 Clean Stockpile 9 4.78E-01 1.46E-01 <MDA <MDA SR-152-561 Batch 35 Clean Stockpile 10 3.08E-01 1.09E-01 <MDA <MDA SR-152-562 Batch 35 Clean Stockpile 11 5.81E-01 1.65E-01 <MDA <MDA SR-152-563 Batch 35 Clean Stockpile 12 3.85E-01 1.29E-01 <MDA <MDA SR-152-564 Batch 35 Clean Stockpile 13 2.57E-01 1.13E-01 <MDA <MDA SR-152-565 Batch 35 Clean Stockpile 14 3.95E-01 1.34E-01 <MDA <MDA SR-152-566 Batch 35 Clean Stockpile 15 5.96E-01 1.61E-01 <MDA <MDA SR-152-567 Batch 35 Clean Stockpile 16 2.99E-01 1.15E-01 <MDA <MDA SR-152-568 Batch 36 Clean Stockpile 1 3.44E-01 1.15E-01 <MDA <MDA SR-152-569 Batch 36 Clean Stockpile 2 3.04E-01 1.28E-01 <MDA <MDA SR-152-570 Batch 36 Clean Stockpile 3 3.89E-01 1.30E-01 <MDA <MDA SR-152-571 Batch 36 Clean Stockpile 4 4.42E-01 1.35E-01 <MDA <MDA SR-152-572 Batch 36 Clean Stockpile 5 3.56E-01 1.57E-01 <MDA <MDA SR-152-573 Batch 36 Clean Stockpile 6 5.76E-01 1.64E-01 <MDA <MDA SR-152-574 Batch 36 Clean Stockpile 7 3.93E-01 1.42E-01 <MDA <MDA SR-152-575 Batch 36 Clean Stockpile 8 4.22E-01 1.31E-01 <MDA <MDA SR-152-576 Batch 36 Clean Stockpile 9 5.55E-01 1.58E-01 <MDA <MDA SR-152-577 Batch 36 Clean Stockpile 10 3.81E-01 1.26E-01 <MDA <MDA SR-152-578 Batch 36 Clean Stockpile 11 3.86E-01 1.35E-01 <MDA <MDA SR-152-579 Batch 36 Clean Stockpile 12 4.49E-01 1.48E-01 <MDA <MDA SR-152-580 Batch 36 Clean Stockpile 13 4.32E-01 1.52E-01 <MDA <MDA SR-152-581 Batch 36 Clean Stockpile 14 5.71E-01 1.56E-01 <MDA <MDA SR-152-582 Batch 36 Clean Stockpile 15 6.46E-01 1.72E-01 <MDA <MDA SR-152-583 Batch 36 Clean Stockpile 16 4.86E-01 1.10E-01 <MDA <MDA SR-152-584 Batch 37 Clean Stockpile 1 4.80E-01 1.47E-01 <MDA <MDA SR-152-585 Batch 37 Clean Stockpile 2 3.17E-01 1.13E-01 <MDA <MDA SR-152-586 Batch 37 Clean Stockpile 3 4.43E-01 1.48E-01 <MDA <MDA SR-152-587 Batch 37 Clean Stockpile 4 5.27E-01 1.73E-01 <MDA <MDA SR-152-588 Batch 37 Clean Stockpile 5 4.96E-01 1.55E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 18 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-589 Batch 37 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-590 Batch 37 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-591 Batch 37 Clean Stockpile 8 4.66E-01 1.39E-01 <MDA <MDA SR-152-592 Batch 37 Clean Stockpile 9 3.92E-01 1.33E-01 <MDA <MDA SR-152-593 Batch 37 Clean Stockpile 10 4.11E-01 1.70E-01 <MDA <MDA SR-152-594 Batch 37 Clean Stockpile 11 3.38E-01 1.22E-01 <MDA <MDA SR-152-595 Batch 37 Clean Stockpile 12 4.09E-01 1.35E-01 <MDA <MDA SR-152-596 Batch 37 Clean Stockpile 13 4.78E-01 1.73E-01 <MDA <MDA SR-152-597 Batch 37 Clean Stockpile 14 5.18E-01 1.44E-01 <MDA <MDA SR-152-598 Batch 37 Clean Stockpile 15 4.07E-01 1.63E-01 <MDA <MDA SR-152-599 Batch 37 Clean Stockpile 16 4.45E-01 1.35E-01 <MDA <MDA SR-152-600 Batch 38 Clean Stockpile 1 4.46E-01 1.40E-01 <MDA <MDA SR-152-601 Batch 38 Clean Stockpile 2 3.66E-01 1.26E-01 <MDA <MDA SR-152-602 Batch 38 Clean Stockpile 3 1.39E-01 1.28E-01 <MDA <MDA SR-152-603 Batch 38 Clean Stockpile 4 3.37E-01 1.44E-01 <MDA <MDA SR-152-604 Batch 38 Clean Stockpile 5 4.42E-01 1.38E-01 <MDA <MDA SR-152-605 Batch 38 Clean Stockpile 6 3.12E-01 1.14E-01 <MDA <MDA SR-152-606 Batch 38 Clean Stockpile 7 4.86E-01 1.52E-01 <MDA <MDA SR-152-607 Batch 38 Clean Stockpile 8 6.44E-01 1.67E-01 <MDA <MDA SR-152-608 Batch 38 Clean Stockpile 9 5.11E-01 1.51E-01 <MDA <MDA SR-152-609 Batch 38 Clean Stockpile 10 3.94E-01 1.23E-01 <MDA <MDA SR-152-610 Batch 38 Clean Stockpile 11 3.83E-01 1.36E-01 <MDA <MDA SR-152-611 Batch 38 Clean Stockpile 12 5.70E-01 1.54E-01 <MDA <MDA SR-152-612 Batch 38 Clean Stockpile 13 4.74E-01 1.47E-01 <MDA <MDA SR-152-613 Batch 38 Clean Stockpile 14 5.18E-01 1.44E-01 <MDA <MDA SR-152-614 Batch 38 Clean Stockpile 15 5.08E-01 1.56E-01 <MDA <MDA SR-152-615 Batch 38 Clean Stockpile 16 5.86E-01 1.53E-01 <MDA <MDA SR-152-616 Batch 39 Clean Stockpile 1 5.13E-01 1.53E-01 <MDA <MDA SR-152-617 Batch 39 Clean Stockpile 2 2.64E-01 1.06E-01 <MDA <MDA SR-152-618 Batch 39 Clean Stockpile 3 6.16E-01 1.73E-01 <MDA <MDA SR-152-619 Batch 39 Clean Stockpile 4 5.72E-01 1.50E-01 <MDA <MDA SR-152-620 Batch 39 Clean Stockpile 5 5.21E-01 1.54E-01 <MDA <MDA SR-152-621 Batch 39 Clean Stockpile 6 1.00E-01 2.11E-01 <MDA <MDA SR-152-622 Batch 39 Clean Stockpile 7 6.52E-01 1.71E-01 <MDA <MDA SR-152-623 Batch 39 Clean Stockpile 8 5.56E-01 1.49E-01 <MDA <MDA SR-152-624 Batch 39 Clean Stockpile 9 5.30E-01 1.60E-01 <MDA <MDA SR-152-625 Batch 39 Clean Stockpile 10 5.71E-01 1.69E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 19 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-626 Batch 39 Clean Stockpile 11 4.27E-01 1.60E-01 <MDA <MDA SR-152-627 Batch 39 Clean Stockpile 12 4.85E-01 1.65E-01 <MDA <MDA SR-152-628 Batch 39 Clean Stockpile 13 4.37E-01 1.40E-01 <MDA <MDA SR-152-629 Batch 39 Clean Stockpile 14 4.51E-01 1.35E-01 <MDA <MDA SR-152-630 Batch 39 Clean Stockpile 15 4.58E-01 1.38E-01 <MDA <MDA SR-152-631 Batch 39 Clean Stockpile 16 4.62E-01 1.40E-01 <MDA <MDA SR-152-632 Batch 40 Clean Stockpile 1 7.47E-01 1.85E-01 <MDA <MDA SR-152-633 Batch 40 Clean Stockpile 2 6.64E-01 1.66E-01 <MDA <MDA SR-152-634 Batch 40 Clean Stockpile 3 5.49E-01 1.59E-01 <MDA <MDA SR-152-635 Batch 40 Clean Stockpile 4 5.92E-01 1.56E-01 <MDA <MDA SR-152-636 Batch 40 Clean Stockpile 5 4.24E-01 1.36E-01 <MDA <MDA SR-152-637 Batch 40 Clean Stockpile 6 5.23E-01 1.47E-01 <MDA <MDA SR-152-638 Batch 40 Clean Stockpile 7 5.41E-01 1.88E-01 <MDA <MDA SR-152-639 Batch 40 Clean Stockpile 8 3.17E-01 1.14E-01 <MDA <MDA SR-152-640 Batch 40 Clean Stockpile 9 4.11E-01 1.34E-01 <MDA <MDA SR-152-641 Batch 40 Clean Stockpile 10 4.19E-01 1.30E-01 <MDA <MDA SR-152-642 Batch 40 Clean Stockpile 11 3.57E-01 1.13E-01 <MDA <MDA SR-152-643 Batch 40 Clean Stockpile 12 5.29E-01 1.42E-01 <MDA <MDA SR-152-644 Batch 40 Clean Stockpile 13 6.06E-01 1.70E-01 <MDA <MDA SR-152-645 Batch 40 Clean Stockpile 14 4.67E-01 1.40E-01 <MDA <MDA SR-152-646 Batch 40 Clean Stockpile 15 5.76E-01 1.65E-01 <MDA <MDA SR-152-647 Batch 40 Clean Stockpile 16 4.20E-01 1.29E-01 <MDA <MDA SR-152-648 Batch 41 Clean Stockpile 1 3.77E-01 1.38E-01 <MDA <MDA SR-152-649 Batch 41 Clean Stockpile 2 5.24E-01 1.43E-01 <MDA <MDA SR-152-650 Batch 41 Clean Stockpile 3 5.26E-01 1.59E-01 <MDA <MDA SR-152-651 Batch 41 Clean Stockpile 4 5.59E-01 1.53E-01 <MDA <MDA SR-152-652 Batch 41 Clean Stockpile 5 4.04E-01 1.33E-01 <MDA <MDA SR-152-653 Batch 41 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-654 Batch 41 Clean Stockpile 7 2.77E-01 1.11E-01 <MDA <MDA SR-152-655 Batch 41 Clean Stockpile 8 4.09E-01 1.54E-01 <MDA <MDA SR-152-656 Batch 41 Clean Stockpile 9 2.36E-01 1.03E-01 <MDA <MDA SR-152-657 Batch 41 Clean Stockpile 10 3.50E-01 1.32E-01 <MDA <MDA SR-152-658 Batch 41 Clean Stockpile 11 3.38E-01 1.26E-01 <MDA <MDA SR-152-659 Batch 41 Clean Stockpile 12 3.36E-01 1.16E-01 <MDA <MDA SR-152-660 Batch 41 Clean Stockpile 13 3.47E-01 1.23E-01 <MDA <MDA SR-152-661 Batch 41 Clean Stockpile 14 3.27E-01 1.18E-01 <MDA <MDA SR-152-662 Batch 41 Clean Stockpile 15 3.54E-01 1.25E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 20 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-663 Batch 41 Clean Stockpile 16 3.40E-01 1.17E-01 <MDA <MDA SR-152-664 Batch 42 Clean Stockpile 1 4.95E-01 1.57E-01 <MDA <MDA SR-152-665 Batch 42 Clean Stockpile 2 4.13E-01 1.31E-01 <MDA <MDA SR-152-666 Batch 42 Clean Stockpile 3 4.95E-01 1.57E-01 <MDA <MDA SR-152-667 Batch 42 Clean Stockpile 4 4.44E-01 1.39E-01 <MDA <MDA SR-152-668 Batch 42 Clean Stockpile 5 2.58E-01 1.13E-01 <MDA <MDA SR-152-669 Batch 42 Clean Stockpile 6 4.22E-01 1.31E-01 <MDA <MDA SR-152-670 Batch 42 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-671 Batch 42 Clean Stockpile 8 4.17E-01 1.34E-01 <MDA <MDA SR-152-672 Batch 42 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-673 Batch 42 Clean Stockpile 10 3.08E-01 1.13E-01 <MDA <MDA SR-152-674 Batch 42 Clean Stockpile 11 3.26E-01 1.23E-01 <MDA <MDA SR-152-675 Batch 42 Clean Stockpile 12 4.65E-01 1.32E-01 <MDA <MDA SR-152-676 Batch 42 Clean Stockpile 13 5.59E-01 1.71E-01 <MDA <MDA SR-152-677 Batch 42 Clean Stockpile 14 2.16E-01 9.21E-02 <MDA <MDA SR-152-678 Batch 42 Clean Stockpile 15 3.62E-01 1.30E-01 <MDA <MDA SR-152-679 Batch 42 Clean Stockpile 16 3.94E-01 1.28E-01 <MDA <MDA SR-152-680 Batch 43 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-681 Batch 43 Clean Stockpile 2 3.21E-01 1.14E-01 <MDA <MDA SR-152-682 Batch 43 Clean Stockpile 3 3.26E-01 1.21E-01 <MDA <MDA SR-152-683 Batch 43 Clean Stockpile 4 5.28E-01 1.67E-01 <MDA <MDA SR-152-684 Batch 43 Clean Stockpile 5 4.67E-01 1.43E-01 <MDA <MDA SR-152-685 Batch 43 Clean Stockpile 6 5.34E-01 1.49E-01 <MDA <MDA SR-152-686 Batch 43 Clean Stockpile 7 2.90E-01 1.32E-01 <MDA <MDA SR-152-687 Batch 43 Clean Stockpile 8 4.38E-01 1.39E-01 <MDA <MDA SR-152-688 Batch 43 Clean Stockpile 9 3.70E-01 1.36E-01 <MDA <MDA SR-152-689 Batch 43 Clean Stockpile 10 3.62E-01 1.18E-01 <MDA <MDA SR-152-690 Batch 43 Clean Stockpile 11 3.87E-01 1.30E-01 <MDA <MDA SR-152-691 Batch 43 Clean Stockpile 12 3.02E-01 1.12E-01 <MDA <MDA SR-152-692 Batch 43 Clean Stockpile 13 3.25E-01 1.21E-01 <MDA <MDA SR-152-693 Batch 43 Clean Stockpile 14 4.09E-01 1.28E-01 <MDA <MDA SR-152-694 Batch 43 Clean Stockpile 15 4.14E-01 1.36E-01 <MDA <MDA SR-152-695 Batch 43 Clean Stockpile 16 3.88E-01 1.60E-01 <MDA <MDA SR-152-696 Batch 44 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-697 Batch 44 Clean Stockpile 2 3.48E-01 1.27E-01 <MDA <MDA SR-152-698 Batch 44 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-699 Batch 44 Clean Stockpile 4 5.61E-01 1.51E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 21 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-700 Batch 44 Clean Stockpile 5 3.09E-01 1.51E-01 <MDA <MDA SR-152-701 Batch 44 Clean Stockpile 6 3.93E-01 1.35E-01 <MDA <MDA SR-152-702 Batch 44 Clean Stockpile 7 2.51E-01 1.03E-01 <MDA <MDA SR-152-703 Batch 44 Clean Stockpile 8 2.81E-01 9.00E-02 <MDA <MDA SR-152-704 Batch 44 Clean Stockpile 9 3.88E-01 1.34E-01 <MDA <MDA SR-152-705 Batch 44 Clean Stockpile 10 2.81E-01 1.05E-01 <MDA <MDA SR-152-706 Batch 44 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-707 Batch 44 Clean Stockpile 12 4.09E-01 1.31E-01 <MDA <MDA SR-152-708 Batch 44 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-709 Batch 44 Clean Stockpile 14 4.02E-01 1.25E-01 <MDA <MDA SR-152-710 Batch 44 Clean Stockpile 15 3.76E-01 1.28E-01 <MDA <MDA SR-152-711 Batch 44 Clean Stockpile 16 3.86E-01 1.19E-01 <MDA <MDA SR-152-712 Batch 45 Clean Stockpile 1 5.60E-01 1.59E-01 <MDA <MDA SR-152-713 Batch 45 Clean Stockpile 2 5.38E-01 1.48E-01 <MDA <MDA SR-152-714 Batch 45 Clean Stockpile 3 2.85E-01 8.62E-02 <MDA <MDA SR-152-715 Batch 45 Clean Stockpile 4 3.59E-01 1.27E-01 <MDA <MDA SR-152-716 Batch 45 Clean Stockpile 5 3.35E-01 1.25E-01 <MDA <MDA SR-152-717 Batch 45 Clean Stockpile 6 3.35E-01 1.22E-01 <MDA <MDA SR-152-718 Batch 45 Clean Stockpile 7 3.77E-01 1.32E-01 <MDA <MDA SR-152-719 Batch 45 Clean Stockpile 8 3.87E-01 1.37E-01 <MDA <MDA SR-152-720 Batch 45 Clean Stockpile 9 3.25E-01 1.19E-01 <MDA <MDA SR-152-721 Batch 45 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-722 Batch 45 Clean Stockpile 11 2.05E-01 9.66E-02 <MDA <MDA SR-152-723 Batch 45 Clean Stockpile 12 3.71E-01 1.34E-01 <MDA <MDA SR-152-724 Batch 45 Clean Stockpile 13 3.73E-01 1.32E-01 <MDA <MDA SR-152-725 Batch 45 Clean Stockpile 14 3.17E-01 1.20E-01 <MDA <MDA SR-152-726 Batch 45 Clean Stockpile 15 3.51E-01 1.23E-01 <MDA <MDA SR-152-727 Batch 45 Clean Stockpile 16 4.27E-01 1.43E-01 <MDA <MDA SR-152-728 Batch 46 Clean Stockpile 1 3.11E-01 1.44E-01 <MDA <MDA SR-152-729 Batch 46 Clean Stockpile 2 3.20E-01 1.17E-01 <MDA <MDA SR-152-730 Batch 46 Clean Stockpile 3 3.65E-01 1.25E-01 <MDA <MDA SR-152-731 Batch 46 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-732 Batch 46 Clean Stockpile 5 3.12E-01 1.20E-01 <MDA <MDA SR-152-733 Batch 46 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-734 Batch 46 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-735 Batch 46 Clean Stockpile 8 2.93E-01 1.15E-01 <MDA <MDA SR-152-736 Batch 46 Clean Stockpile 9 4.20E-01 1.59E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 22 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-737 Batch 46 Clean Stockpile 10 5.15E-01 1.54E-01 <MDA <MDA SR-152-738 Batch 46 Clean Stockpile 11 4.52E-01 1.34E-01 <MDA <MDA SR-152-739 Batch 46 Clean Stockpile 12 4.99E-01 1.53E-01 <MDA <MDA SR-152-740 Batch 46 Clean Stockpile 13 4.51E-01 1.45E-01 <MDA <MDA SR-152-741 Batch 46 Clean Stockpile 14 4.07E-01 1.38E-01 <MDA <MDA SR-152-742 Batch 46 Clean Stockpile 15 4.36E-01 1.40E-01 <MDA <MDA SR-152-743 Batch 46 Clean Stockpile 16 4.73E-01 1.40E-01 <MDA <MDA SR-152-744 Batch 47 Clean Stockpile 1 5.90E-01 1.60E-01 <MDA <MDA SR-152-745 Batch 47 Clean Stockpile 2 5.08E-01 1.07E-01 <MDA <MDA SR-152-746 Batch 47 Clean Stockpile 3 4.58E-01 1.37E-01 <MDA <MDA SR-152-747 Batch 47 Clean Stockpile 4 4.90E-01 1.50E-01 <MDA <MDA SR-152-748 Batch 47 Clean Stockpile 5 2.95E-01 1.14E-01 <MDA <MDA SR-152-749 Batch 47 Clean Stockpile 6 4.18E-01 1.41E-01 <MDA <MDA SR-152-750 Batch 47 Clean Stockpile 7 3.50E-01 1.50E-01 <MDA <MDA SR-152-751 Batch 47 Clean Stockpile 8 4.14E-01 1.28E-01 <MDA <MDA SR-152-752 Batch 47 Clean Stockpile 9 6.61E-01 1.64E-01 <MDA <MDA SR-152-753 Batch 47 Clean Stockpile 10 2.96E-01 1.07E-01 <MDA <MDA SR-152-754 Batch 47 Clean Stockpile 11 3.63E-01 1.29E-01 <MDA <MDA SR-152-755 Batch 47 Clean Stockpile 12 4.65E-01 1.47E-01 <MDA <MDA SR-152-756 Batch 47 Clean Stockpile 13 4.65E-01 1.49E-01 <MDA <MDA SR-152-757 Batch 47 Clean Stockpile 14 2.64E-01 1.02E-01 <MDA <MDA SR-152-758 Batch 47 Clean Stockpile 15 2.82E-01 1.30E-01 <MDA <MDA SR-152-759 Batch 47 Clean Stockpile 16 4.14E-01 1.56E-01 <MDA <MDA SR-152-760 Batch 48 Clean Stockpile 1 6.74E-01 1.77E-01 <MDA <MDA SR-152-761 Batch 48 Clean Stockpile 2 3.38E-01 1.20E-01 <MDA <MDA SR-152-762 Batch 48 Clean Stockpile 3 3.84E-01 1.30E-01 <MDA <MDA SR-152-763 Batch 48 Clean Stockpile 4 4.83E-01 1.43E-01 <MDA <MDA SR-152-764 Batch 48 Clean Stockpile 5 3.42E-01 1.27E-01 <MDA <MDA SR-152-765 Batch 48 Clean Stockpile 6 3.56E-01 1.17E-01 <MDA <MDA SR-152-766 Batch 48 Clean Stockpile 7 3.78E-01 1.45E-01 <MDA <MDA SR-152-767 Batch 48 Clean Stockpile 8 4.57E-01 1.37E-01 <MDA <MDA SR-152-768 Batch 48 Clean Stockpile 9 3.68E-01 1.37E-01 <MDA <MDA SR-152-769 Batch 48 Clean Stockpile 10 4.44E-01 1.36E-01 <MDA <MDA SR-152-770 Batch 48 Clean Stockpile 11 3.98E-01 1.31E-01 <MDA <MDA SR-152-771 Batch 48 Clean Stockpile 12 4.03E-01 1.47E-01 <MDA <MDA SR-152-772 Batch 48 Clean Stockpile 13 3.94E-01 1.33E-01 <MDA <MDA SR-152-773 Batch 48 Clean Stockpile 14 4.78E-01 1.37E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 23 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-774 Batch 48 Clean Stockpile 15 6.26E-01 1.80E-01 <MDA <MDA SR-152-775 Batch 48 Clean Stockpile 16 4.84E-01 1.40E-01 <MDA <MDA SR-152-776 Batch 49 Clean Stockpile 1 3.75E-01 1.21E-01 <MDA <MDA SR-152-777 Batch 49 Clean Stockpile 2 4.01E-01 1.32E-01 <MDA <MDA SR-152-778 Batch 49 Clean Stockpile 3 3.46E-01 1.25E-01 <MDA <MDA SR-152-779 Batch 49 Clean Stockpile 4 4.61E-01 1.45E-01 <MDA <MDA SR-152-780 Batch 49 Clean Stockpile 5 3.26E-01 1.19E-01 <MDA <MDA SR-152-781 Batch 49 Clean Stockpile 6 2.77E-01 1.09E-01 <MDA <MDA SR-152-782 Batch 49 Clean Stockpile 7 3.67E-01 1.25E-01 <MDA <MDA SR-152-783 Batch 49 Clean Stockpile 8 3.53E-01 1.29E-01 <MDA <MDA SR-152-784 Batch 49 Clean Stockpile 9 5.54E-01 1.60E-01 <MDA <MDA SR-152-785 Batch 49 Clean Stockpile 10 3.59E-01 1.20E-01 <MDA <MDA SR-152-786 Batch 49 Clean Stockpile 11 3.56E-01 1.30E-01 <MDA <MDA SR-152-787 Batch 49 Clean Stockpile 12 3.44E-01 1.20E-01 <MDA <MDA SR-152-788 Batch 49 Clean Stockpile 13 5.64E-01 1.60E-01 <MDA <MDA SR-152-789 Batch 49 Clean Stockpile 14 3.18E-01 1.17E-01 <MDA <MDA SR-152-790 Batch 49 Clean Stockpile 15 3.58E-01 1.21E-01 <MDA <MDA SR-152-791 Batch 49 Clean Stockpile 16 3.57E-01 1.29E-01 <MDA <MDA SR-152-792 Batch 50 Clean Stockpile 1 4.89E-01 1.81E-01 <MDA <MDA SR-152-793 Batch 50 Clean Stockpile 2 5.13E-01 1.79E-01 <MDA <MDA SR-152-794 Batch 50 Clean Stockpile 3 4.12E-01 1.38E-01 <MDA <MDA SR-152-795 Batch 50 Clean Stockpile 4 3.03E-01 1.17E-01 <MDA <MDA SR-152-796 Batch 50 Clean Stockpile 5 4.05E-01 1.39E-01 <MDA <MDA SR-152-797 Batch 50 Clean Stockpile 6 4.37E-01 1.37E-01 <MDA <MDA SR-152-798 Batch 50 Clean Stockpile 7 3.19E-01 1.19E-01 <MDA <MDA SR-152-799 Batch 50 Clean Stockpile 8 4.28E-01 1.41E-01 <MDA <MDA SR-152-800 Batch 50 Clean Stockpile 9 3.08E-01 1.19E-01 <MDA <MDA SR-152-801 Batch 50 Clean Stockpile 10 3.40E-01 1.15E-01 <MDA <MDA SR-152-802 Batch 50 Clean Stockpile 11 2.54E-01 1.11E-01 <MDA <MDA SR-152-803 Batch 50 Clean Stockpile 12 3.75E-01 1.21E-01 <MDA <MDA SR-152-804 Batch 50 Clean Stockpile 13 3.74E-01 1.31E-01 <MDA <MDA SR-152-805 Batch 50 Clean Stockpile 14 4.43E-01 1.44E-01 <MDA <MDA SR-152-806 Batch 50 Clean Stockpile 15 4.07E-01 1.36E-01 <MDA <MDA SR-152-807 Batch 50 Clean Stockpile 16 3.85E-01 1.35E-01 <MDA <MDA SR-152-808 Batch 51 Clean Stockpile 1 2.80E-01 1.27E-01 <MDA <MDA SR-152-809 Batch 51 Clean Stockpile 2 4.14E-01 1.30E-01 <MDA <MDA SR-152-810 Batch 51 Clean Stockpile 3 2.88E-01 1.11E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 24 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-811 Batch 51 Clean Stockpile 4 4.50E-01 1.33E-01 <MDA <MDA SR-152-812 Batch 51 Clean Stockpile 5 4.98E-01 1.54E-01 <MDA <MDA SR-152-813 Batch 51 Clean Stockpile 6 4.41E-01 1.32E-01 <MDA <MDA SR-152-814 Batch 51 Clean Stockpile 7 3.41E-01 1.28E-01 <MDA <MDA SR-152-815 Batch 51 Clean Stockpile 8 3.48E-01 1.23E-01 <MDA <MDA SR-152-816 Batch 51 Clean Stockpile 9 3.29E-01 1.20E-01 <MDA <MDA SR-152-817 Batch 51 Clean Stockpile 10 3.76E-01 1.29E-01 <MDA <MDA SR-152-818 Batch 51 Clean Stockpile 11 4.04E-01 1.31E-01 <MDA <MDA SR-152-819 Batch 51 Clean Stockpile 12 4.31E-01 1.53E-01 <MDA <MDA SR-152-820 Batch 51 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-821 Batch 51 Clean Stockpile 14 3.58E-01 1.21E-01 <MDA <MDA SR-152-822 Batch 51 Clean Stockpile 15 3.67E-01 1.14E-01 <MDA <MDA SR-152-823 Batch 51 Clean Stockpile 16 3.37E-01 1.16E-01 <MDA <MDA SR-152-824 Batch 52 Clean Stockpile 1 4.18E-01 1.56E-01 <MDA <MDA SR-152-825 Batch 52 Clean Stockpile 2 4.06E-01 1.30E-01 <MDA <MDA SR-152-826 Batch 52 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-827 Batch 52 Clean Stockpile 4 3.36E-01 1.23E-01 <MDA <MDA SR-152-828 Batch 52 Clean Stockpile 5 4.51E-01 1.49E-01 <MDA <MDA SR-152-829 Batch 52 Clean Stockpile 6 3.52E-01 1.47E-01 <MDA <MDA SR-152-830 Batch 52 Clean Stockpile 7 3.95E-01 1.42E-01 <MDA <MDA SR-152-831 Batch 52 Clean Stockpile 8 3.31E-01 1.23E-01 <MDA <MDA SR-152-832 Batch 52 Clean Stockpile 9 3.54E-01 1.30E-01 <MDA <MDA SR-152-833 Batch 52 Clean Stockpile 10 3.71E-01 1.30E-01 <MDA <MDA SR-152-834 Batch 52 Clean Stockpile 11 2.65E-01 1.11E-01 <MDA <MDA SR-152-835 Batch 52 Clean Stockpile 12 3.06E-01 1.20E-01 <MDA <MDA SR-152-836 Batch 52 Clean Stockpile 13 4.57E-01 1.49E-01 <MDA <MDA SR-152-837 Batch 52 Clean Stockpile 14 4.53E-01 1.42E-01 <MDA <MDA SR-152-838 Batch 52 Clean Stockpile 15 4.61E-01 1.45E-01 <MDA <MDA SR-152-839 Batch 52 Clean Stockpile 16 3.70E-01 1.33E-01 <MDA <MDA SR-152-840 Batch 53 Clean Stockpile 1 3.58E-01 1.29E-01 <MDA <MDA SR-152-841 Batch 53 Clean Stockpile 2 3.45E-01 1.51E-01 <MDA <MDA SR-152-842 Batch 53 Clean Stockpile 3 3.19E-01 1.19E-01 <MDA <MDA SR-152-843 Batch 53 Clean Stockpile 4 2.89E-01 1.33E-01 <MDA <MDA SR-152-844 Batch 53 Clean Stockpile 5 3.64E-01 1.52E-01 <MDA <MDA SR-152-845 Batch 53 Clean Stockpile 6 2.50E-01 1.04E-01 <MDA <MDA SR-152-846 Batch 53 Clean Stockpile 7 3.94E-01 1.32E-01 <MDA <MDA SR-152-847 Batch 53 Clean Stockpile 8 3.36E-01 1.27E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 25 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-848 Batch 53 Clean Stockpile 9 3.19E-01 1.19E-01 <MDA <MDA SR-152-849 Batch 53 Clean Stockpile 10 4.70E-01 1.63E-01 <MDA <MDA SR-152-850 Batch 53 Clean Stockpile 11 3.07E-01 1.21E-01 <MDA <MDA SR-152-851 Batch 53 Clean Stockpile 12 3.36E-01 1.49E-01 <MDA <MDA SR-152-852 Batch 53 Clean Stockpile 13 4.53E-01 1.44E-01 <MDA <MDA SR-152-853 Batch 53 Clean Stockpile 14 4.72E-01 1.52E-01 <MDA <MDA SR-152-854 Batch 53 Clean Stockpile 15 4.17E-01 1.38E-01 <MDA <MDA SR-152-855 Batch 53 Clean Stockpile 16 3.98E-01 1.33E-01 <MDA <MDA SR-152-856 Batch 54 Clean Stockpile 1 3.39E-01 1.22E-01 <MDA <MDA SR-152-857 Batch 54 Clean Stockpile 2 4.08E-01 1.36E-01 <MDA <MDA SR-152-858 Batch 54 Clean Stockpile 3 2.19E-01 9.83E-02 <MDA <MDA SR-152-859 Batch 54 Clean Stockpile 4 4.19E-01 1.33E-01 <MDA <MDA SR-152-860 Batch 54 Clean Stockpile 5 3.96E-01 1.63E-01 <MDA <MDA SR-152-861 Batch 54 Clean Stockpile 6 2.81E-01 1.28E-01 <MDA <MDA SR-152-862 Batch 54 Clean Stockpile 7 4.27E-01 1.43E-01 <MDA <MDA SR-152-863 Batch 54 Clean Stockpile 8 3.18E-01 1.16E-01 <MDA <MDA SR-152-864 Batch 54 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-865 Batch 54 Clean Stockpile 10 3.39E-01 1.18E-01 <MDA <MDA SR-152-866 Batch 54 Clean Stockpile 11 3.45E-01 1.22E-01 <MDA <MDA SR-152-867 Batch 54 Clean Stockpile 12 4.92E-01 1.51E-01 <MDA <MDA SR-152-868 Batch 54 Clean Stockpile 13 2.56E-01 1.09E-01 <MDA <MDA SR-152-869 Batch 54 Clean Stockpile 14 4.62E-01 1.45E-01 <MDA <MDA SR-152-870 Batch 54 Clean Stockpile 15 3.65E-01 1.27E-01 <MDA <MDA SR-152-871 Batch 54 Clean Stockpile 16 3.96E-01 1.34E-01 <MDA <MDA SR-152-872 Batch 55 Clean Stockpile 1 4.21E-01 1.43E-01 <MDA <MDA SR-152-873 Batch 55 Clean Stockpile 2 3.82E-01 1.32E-01 <MDA <MDA SR-152-874 Batch 55 Clean Stockpile 3 3.85E-01 1.33E-01 <MDA <MDA SR-152-875 Batch 55 Clean Stockpile 4 3.19E-01 1.23E-01 <MDA <MDA SR-152-876 Batch 55 Clean Stockpile 5 3.86E-01 1.29E-01 <MDA <MDA SR-152-877 Batch 55 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-878 Batch 55 Clean Stockpile 7 3.83E-01 1.30E-01 <MDA <MDA SR-152-879 Batch 55 Clean Stockpile 8 4.78E-01 1.48E-01 <MDA <MDA SR-152-880 Batch 55 Clean Stockpile 9 3.05E-01 1.14E-01 <MDA <MDA SR-152-881 Batch 55 Clean Stockpile 10 3.69E-01 1.20E-01 <MDA <MDA SR-152-882 Batch 55 Clean Stockpile 11 3.31E-01 1.23E-01 <MDA <MDA SR-152-883 Batch 55 Clean Stockpile 12 2.70E-01 1.10E-01 <MDA <MDA SR-152-884 Batch 55 Clean Stockpile 13 2.38E-01 1.02E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 26 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-885 Batch 55 Clean Stockpile 14 3.13E-01 1.11E-01 <MDA <MDA SR-152-886 Batch 55 Clean Stockpile 15 4.94E-01 1.50E-01 <MDA <MDA SR-152-887 Batch 55 Clean Stockpile 16 4.00E-01 1.34E-01 <MDA <MDA SR-152-888 Batch 56 Clean Stockpile 1 3.30E-01 8.57E-02 <MDA <MDA SR-152-889 Batch 56 Clean Stockpile 2 4.38E-01 1.44E-01 <MDA <MDA SR-152-890 Batch 56 Clean Stockpile 3 4.06E-01 1.38E-01 <MDA <MDA SR-152-891 Batch 56 Clean Stockpile 4 2.69E-01 1.12E-01 <MDA <MDA SR-152-892 Batch 56 Clean Stockpile 5 2.40E-01 1.02E-01 <MDA <MDA SR-152-893 Batch 56 Clean Stockpile 6 5.86E-01 1.70E-01 <MDA <MDA SR-152-894 Batch 56 Clean Stockpile 7 2.88E-01 1.13E-01 <MDA <MDA SR-152-895 Batch 56 Clean Stockpile 8 5.13E-01 1.61E-01 <MDA <MDA SR-152-896 Batch 56 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-897 Batch 56 Clean Stockpile 10 4.18E-01 1.57E-01 <MDA <MDA SR-152-898 Batch 56 Clean Stockpile 11 5.70E-01 1.64E-01 <MDA <MDA SR-152-899 Batch 56 Clean Stockpile 12 6.75E-01 1.83E-01 <MDA <MDA SR-152-900 Batch 56 Clean Stockpile 13 4.98E-01 1.79E-01 <MDA <MDA SR-152-901 Batch 56 Clean Stockpile 14 6.89E-01 1.79E-01 <MDA <MDA SR-152-902 Batch 56 Clean Stockpile 15 5.88E-01 1.65E-01 <MDA <MDA SR-152-903 Batch 56 Clean Stockpile 16 5.44E-01 1.56E-01 <MDA <MDA SR-152-904 Batch 57 Clean Stockpile 1 4.58E-01 1.44E-01 <MDA <MDA SR-152-905 Batch 57 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-906 Batch 57 Clean Stockpile 3 6.54E-01 1.68E-01 <MDA <MDA SR-152-907 Batch 57 Clean Stockpile 4 9.11E-01 2.07E-01 <MDA <MDA SR-152-908 Batch 57 Clean Stockpile 5 4.50E-01 1.53E-01 <MDA <MDA SR-152-909 Batch 57 Clean Stockpile 6 3.91E-01 1.31E-01 <MDA <MDA SR-152-910 Batch 57 Clean Stockpile 7 3.78E-01 1.60E-01 <MDA <MDA SR-152-911 Batch 57 Clean Stockpile 8 4.48E-01 1.42E-01 <MDA <MDA SR-152-912 Batch 57 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-913 Batch 57 Clean Stockpile 10 3.82E-01 1.30E-01 <MDA <MDA SR-152-914 Batch 57 Clean Stockpile 11 4.80E-01 1.49E-01 <MDA <MDA SR-152-915 Batch 57 Clean Stockpile 12 4.76E-01 1.46E-01 <MDA <MDA SR-152-916 Batch 57 Clean Stockpile 13 5.08E-01 1.54E-01 <MDA <MDA SR-152-917 Batch 57 Clean Stockpile 14 5.13E-01 1.57E-01 <MDA <MDA SR-152-918 Batch 57 Clean Stockpile 15 3.89E-01 1.03E-01 <MDA <MDA SR-152-919 Batch 57 Clean Stockpile 16 5.90E-01 1.63E-01 <MDA <MDA SR-152-920 Batch 58 Clean Stockpile 1 6.01E-01 1.61E-01 <MDA <MDA SR-152-921 Batch 58 Clean Stockpile 2 6.14E-01 1.68E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 27 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-922 Batch 58 Clean Stockpile 3 2.02E-01 9.03E-02 <MDA <MDA SR-152-923 Batch 58 Clean Stockpile 4 4.89E-01 1.42E-01 <MDA <MDA SR-152-924 Batch 58 Clean Stockpile 5 4.86E-01 1.66E-01 <MDA <MDA SR-152-925 Batch 58 Clean Stockpile 6 2.81E-01 1.30E-01 <MDA <MDA SR-152-926 Batch 58 Clean Stockpile 7 4.86E-01 1.44E-01 <MDA <MDA SR-152-927 Batch 58 Clean Stockpile 8 5.06E-01 1.57E-01 <MDA <MDA SR-152-928 Batch 58 Clean Stockpile 9 4.11E-01 1.37E-01 <MDA <MDA SR-152-929 Batch 58 Clean Stockpile 10 3.79E-01 1.50E-01 <MDA <MDA SR-152-930 Batch 58 Clean Stockpile 11 4.01E-01 1.38E-01 <MDA <MDA SR-152-931 Batch 58 Clean Stockpile 12 4.95E-01 1.73E-01 <MDA <MDA SR-152-932 Batch 58 Clean Stockpile 13 5.28E-01 1.55E-01 <MDA <MDA SR-152-933 Batch 58 Clean Stockpile 14 5.66E-01 1.78E-01 <MDA <MDA SR-152-934 Batch 58 Clean Stockpile 15 4.00E-01 1.64E-01 <MDA <MDA SR-152-935 Batch 58 Clean Stockpile 16 4.55E-01 1.44E-01 <MDA <MDA SR-152-936 Batch 59 Clean Stockpile 1 4.97E-01 1.58E-01 <MDA <MDA SR-152-937 Batch 59 Clean Stockpile 2 5.06E-01 1.59E-01 <MDA <MDA SR-152-938 Batch 59 Clean Stockpile 3 5.17E-01 1.53E-01 <MDA <MDA SR-152-939 Batch 59 Clean Stockpile 4 4.82E-01 1.44E-01 <MDA <MDA SR-152-940 Batch 59 Clean Stockpile 5 3.52E-01 1.29E-01 <MDA <MDA SR-152-941 Batch 59 Clean Stockpile 6 4.56E-01 1.45E-01 <MDA <MDA SR-152-942 Batch 59 Clean Stockpile 7 4.86E-01 1.51E-01 <MDA <MDA SR-152-943 Batch 59 Clean Stockpile 8 6.41E-01 1.77E-01 <MDA <MDA SR-152-944 Batch 59 Clean Stockpile 9 4.94E-01 1.60E-01 <MDA <MDA SR-152-945 Batch 59 Clean Stockpile 10 5.26E-01 1.57E-01 <MDA <MDA SR-152-946 Batch 59 Clean Stockpile 11 6.06E-01 1.66E-01 <MDA <MDA SR-152-947 Batch 59 Clean Stockpile 12 5.58E-01 1.62E-01 <MDA <MDA SR-152-948 Batch 59 Clean Stockpile 13 4.87E-01 1.53E-01 <MDA <MDA SR-152-949 Batch 59 Clean Stockpile 14 4.71E-01 1.48E-01 <MDA <MDA SR-152-950 Batch 59 Clean Stockpile 15 2.56E-01 1.03E-01 <MDA <MDA SR-152-951 Batch 59 Clean Stockpile 16 3.89E-01 1.30E-01 <MDA <MDA SR-152-952 Batch 60 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-953 Batch 60 Clean Stockpile 2 3.97E-01 1.33E-01 <MDA <MDA SR-152-954 Batch 60 Clean Stockpile 3 4.61E-01 1.43E-01 <MDA <MDA SR-152-955 Batch 60 Clean Stockpile 4 5.51E-01 1.75E-01 <MDA <MDA SR-152-956 Batch 60 Clean Stockpile 5 7.23E-01 1.83E-01 <MDA <MDA SR-152-957 Batch 60 Clean Stockpile 6 5.33E-01 1.61E-01 <MDA <MDA SR-152-958 Batch 60 Clean Stockpile 7 4.79E-01 1.52E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 28 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-959 Batch 60 Clean Stockpile 8 5.16E-01 1.55E-01 <MDA <MDA SR-152-960 Batch 60 Clean Stockpile 9 4.53E-01 1.44E-01 <MDA <MDA SR-152-961 Batch 60 Clean Stockpile 10 5.88E-01 1.57E-01 <MDA <MDA SR-152-962 Batch 60 Clean Stockpile 11 4.64E-01 1.40E-01 <MDA <MDA SR-152-963 Batch 60 Clean Stockpile 12 7.18E-01 1.80E-01 <MDA <MDA SR-152-964 Batch 60 Clean Stockpile 13 4.51E-01 1.45E-01 <MDA <MDA SR-152-965 Batch 60 Clean Stockpile 14 6.36E-01 1.69E-01 <MDA <MDA SR-152-966 Batch 60 Clean Stockpile 15 3.99E-01 1.53E-01 <MDA <MDA SR-152-967 Batch 60 Clean Stockpile 16 5.79E-01 1.63E-01 <MDA <MDA SR-152-968 Batch 61 Clean Stockpile 1 4.92E-01 1.49E-01 <MDA <MDA SR-152-969 Batch 61 Clean Stockpile 2 5.04E-01 2.11E-01 <MDA <MDA SR-152-970 Batch 61 Clean Stockpile 3 5.16E-01 1.54E-01 <MDA <MDA SR-152-971 Batch 61 Clean Stockpile 4 3.63E-01 1.31E-01 <MDA <MDA SR-152-972 Batch 61 Clean Stockpile 5 4.23E-01 1.44E-01 <MDA <MDA SR-152-973 Batch 61 Clean Stockpile 6 5.70E-01 1.62E-01 <MDA <MDA SR-152-974 Batch 61 Clean Stockpile 7 3.21E-01 1.21E-01 <MDA <MDA SR-152-975 Batch 61 Clean Stockpile 8 3.29E-01 1.23E-01 <MDA <MDA SR-152-976 Batch 61 Clean Stockpile 9 5.11E-01 1.62E-01 <MDA <MDA SR-152-977 Batch 61 Clean Stockpile 10 7.23E-01 1.85E-01 <MDA <MDA SR-152-978 Batch 61 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-979 Batch 61 Clean Stockpile 12 6.58E-01 1.89E-01 <MDA <MDA SR-152-980 Batch 61 Clean Stockpile 13 3.61E-01 1.28E-01 <MDA <MDA SR-152-981 Batch 61 Clean Stockpile 14 6.03E-01 1.84E-01 <MDA <MDA SR-152-982 Batch 61 Clean Stockpile 15 6.03E-01 1.70E-01 <MDA <MDA SR-152-983 Batch 61 Clean Stockpile 16 6.63E-01 1.77E-01 <MDA <MDA SR-152-984 Batch 62 Clean Stockpile 1 5.39E-01 1.56E-01 <MDA <MDA SR-152-985 Batch 62 Clean Stockpile 2 4.25E-01 1.38E-01 <MDA <MDA SR-152-986 Batch 62 Clean Stockpile 3 7.51E-01 1.85E-01 <MDA <MDA SR-152-987 Batch 62 Clean Stockpile 4 5.73E-01 1.81E-01 <MDA <MDA SR-152-988 Batch 62 Clean Stockpile 5 6.86E-01 1.83E-01 <MDA <MDA SR-152-989 Batch 62 Clean Stockpile 6 6.77E-01 1.76E-01 <MDA <MDA SR-152-990 Batch 62 Clean Stockpile 7 4.83E-01 1.55E-01 <MDA <MDA SR-152-991 Batch 62 Clean Stockpile 8 5.51E-01 1.56E-01 <MDA <MDA SR-152-992 Batch 62 Clean Stockpile 9 5.52E-01 1.60E-01 <MDA <MDA SR-152-993 Batch 62 Clean Stockpile 10 7.08E-01 1.85E-01 <MDA <MDA SR-152-994 Batch 62 Clean Stockpile 11 4.03E-01 1.41E-01 <MDA <MDA SR-152-995 Batch 62 Clean Stockpile 12 5.93E-01 1.65E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 29 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-996 Batch 62 Clean Stockpile 13 4.16E-01 1.43E-01 <MDA <MDA SR-152-997 Batch 62 Clean Stockpile 14 3.34E-01 1.45E-01 <MDA <MDA SR-152-998 Batch 62 Clean Stockpile 15 5.13E-01 1.55E-01 <MDA <MDA SR-152-999 Batch 62 Clean Stockpile 16 4.08E-01 1.02E-01 <MDA <MDA SR-152-1000 Batch 63 Clean Stockpile 1 4.67E-01 1.43E-01 <MDA <MDA SR-152-1001 Batch 63 Clean Stockpile 2 4.44E-01 1.43E-01 <MDA <MDA SR-152-1002 Batch 63 Clean Stockpile 3 5.90E-01 1.64E-01 <MDA <MDA SR-152-1003 Batch 63 Clean Stockpile 4 5.10E-01 1.51E-01 <MDA <MDA SR-152-1004 Batch 63 Clean Stockpile 5 5.65E-01 1.62E-01 <MDA <MDA SR-152-1005 Batch 63 Clean Stockpile 6 5.87E-01 1.65E-01 <MDA <MDA SR-152-1006 Batch 63 Clean Stockpile 7 5.55E-01 1.82E-01 <MDA <MDA SR-152-1007 Batch 63 Clean Stockpile 8 7.20E-01 1.90E-01 <MDA <MDA SR-152-1008 Batch 63 Clean Stockpile 9 5.90E-01 1.84E-01 <MDA <MDA SR-152-1009 Batch 63 Clean Stockpile 10 7.33E-01 1.90E-01 <MDA <MDA SR-152-1010 Batch 63 Clean Stockpile 11 5.49E-01 1.61E-01 <MDA <MDA SR-152-1011 Batch 63 Clean Stockpile 12 7.59E-01 1.84E-01 <MDA <MDA SR-152-1012 Batch 63 Clean Stockpile 13 4.94E-01 1.51E-01 <MDA <MDA SR-152-1013 Batch 63 Clean Stockpile 14 5.76E-01 1.67E-01 <MDA <MDA SR-152-1014 Batch 63 Clean Stockpile 15 4.84E-01 1.48E-01 <MDA <MDA SR-152-1015 Batch 63 Clean Stockpile 16 6.35E-01 1.74E-01 <MDA <MDA SR-152-1016 Batch 64 Clean Stockpile 1 5.07E-01 1.41E-01 <MDA <MDA SR-152-1017 Batch 64 Clean Stockpile 2 5.51E-01 1.56E-01 <MDA <MDA SR-152-1018 Batch 64 Clean Stockpile 3 4.57E-01 1.31E-01 <MDA <MDA SR-152-1019 Batch 64 Clean Stockpile 4 3.06E-01 1.25E-01 <MDA <MDA SR-152-1020 Batch 64 Clean Stockpile 5 4.69E-01 1.52E-01 <MDA <MDA SR-152-1021 Batch 64 Clean Stockpile 6 5.35E-01 1.45E-01 <MDA <MDA SR-152-1022 Batch 64 Clean Stockpile 7 5.17E-01 1.48E-01 <MDA <MDA SR-152-1023 Batch 64 Clean Stockpile 8 6.24E-01 1.58E-01 <MDA <MDA SR-152-1024 Batch 64 Clean Stockpile 9 4.07E-01 1.26E-01 <MDA <MDA SR-152-1025 Batch 64 Clean Stockpile 10 5.19E-01 1.38E-01 <MDA <MDA SR-152-1026 Batch 64 Clean Stockpile 11 5.72E-01 1.46E-01 <MDA <MDA SR-152-1027 Batch 64 Clean Stockpile 12 6.18E-01 1.58E-01 <MDA <MDA SR-152-1028 Batch 64 Clean Stockpile 13 6.34E-01 1.62E-01 <MDA <MDA SR-152-1029 Batch 64 Clean Stockpile 14 4.40E-01 1.35E-01 <MDA <MDA SR-152-1030 Batch 64 Clean Stockpile 15 5.46E-01 1.63E-01 <MDA <MDA SR-152-1031 Batch 64 Clean Stockpile 16 5.01E-01 1.55E-01 <MDA <MDA SR-152-1032 Batch 65 Clean Stockpile 1 6.53E-01 1.68E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 30 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1033 Batch 65 Clean Stockpile 2 7.02E-01 1.97E-01 <MDA <MDA SR-152-1034 Batch 65 Clean Stockpile 3 5.51E-01 1.63E-01 <MDA <MDA SR-152-1035 Batch 65 Clean Stockpile 4 6.43E-01 1.71E-01 <MDA <MDA SR-152-1036 Batch 65 Clean Stockpile 5 6.53E-01 1.74E-01 <MDA <MDA SR-152-1037 Batch 65 Clean Stockpile 6 4.89E-01 1.46E-01 <MDA <MDA SR-152-1038 Batch 65 Clean Stockpile 7 4.72E-01 1.45E-01 <MDA <MDA SR-152-1039 Batch 65 Clean Stockpile 8 5.27E-01 1.86E-01 <MDA <MDA SR-152-1040 Batch 65 Clean Stockpile 9 5.88E-01 1.62E-01 <MDA <MDA SR-152-1041 Batch 65 Clean Stockpile 10 4.93E-01 1.48E-01 <MDA <MDA SR-152-1042 Batch 65 Clean Stockpile 11 7.42E-01 1.74E-01 <MDA <MDA SR-152-1043 Batch 65 Clean Stockpile 12 5.10E-01 1.54E-01 <MDA <MDA SR-152-1044 Batch 65 Clean Stockpile 13 1.32E+00 2.42E-01 <MDA <MDA SR-152-1045 Batch 65 Clean Stockpile 14 8.53E-01 2.05E-01 <MDA <MDA SR-152-1046 Batch 65 Clean Stockpile 15 6.31E-01 1.68E-01 <MDA <MDA SR-152-1047 Batch 65 Clean Stockpile 16 6.46E-01 1.75E-01 <MDA <MDA SR-152-1048 Batch 66 Clean Stockpile 1 5.57E-01 1.63E-01 <MDA <MDA SR-152-1049 Batch 66 Clean Stockpile 2 7.59E-01 1.88E-01 <MDA <MDA SR-152-1050 Batch 66 Clean Stockpile 3 4.33E-01 1.36E-01 <MDA <MDA SR-152-1051 Batch 66 Clean Stockpile 4 5.50E-01 1.48E-01 <MDA <MDA SR-152-1052 Batch 66 Clean Stockpile 5 3.89E-01 1.38E-01 <MDA <MDA SR-152-1053 Batch 66 Clean Stockpile 6 6.45E-01 1.81E-01 <MDA <MDA SR-152-1054 Batch 66 Clean Stockpile 7 5.60E-01 1.64E-01 <MDA <MDA SR-152-1055 Batch 66 Clean Stockpile 8 7.38E-01 1.84E-01 <MDA <MDA SR-152-1056 Batch 66 Clean Stockpile 9 6.43E-01 1.67E-01 <MDA <MDA SR-152-1057 Batch 66 Clean Stockpile 10 5.63E-01 1.80E-01 <MDA <MDA SR-152-1058 Batch 66 Clean Stockpile 11 7.35E-01 1.79E-01 <MDA <MDA SR-152-1059 Batch 66 Clean Stockpile 12 5.27E-01 1.60E-01 <MDA <MDA SR-152-1060 Batch 66 Clean Stockpile 13 6.26E-01 1.64E-01 <MDA <MDA SR-152-1061 Batch 66 Clean Stockpile 14 4.60E-01 1.43E-01 <MDA <MDA SR-152-1062 Batch 66 Clean Stockpile 15 6.60E-01 1.74E-01 <MDA <MDA SR-152-1063 Batch 66 Clean Stockpile 16 6.07E-01 1.84E-01 <MDA <MDA SR-152-1064 Batch 67 Clean Stockpile 1 6.78E-01 1.78E-01 <MDA <MDA SR-152-1065 Batch 67 Clean Stockpile 2 4.82E-01 1.43E-01 <MDA <MDA SR-152-1066 Batch 67 Clean Stockpile 3 4.50E-01 1.46E-01 <MDA <MDA SR-152-1067 Batch 67 Clean Stockpile 4 5.68E-01 1.57E-01 <MDA <MDA SR-152-1068 Batch 67 Clean Stockpile 5 4.97E-01 1.47E-01 <MDA <MDA SR-152-1069 Batch 67 Clean Stockpile 6 6.27E-01 1.65E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 31 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1070 Batch 67 Clean Stockpile 7 8.18E-01 1.85E-01 <MDA <MDA SR-152-1071 Batch 67 Clean Stockpile 8 6.30E-01 1.63E-01 <MDA <MDA SR-152-1072 Batch 67 Clean Stockpile 9 5.54E-01 1.29E-01 <MDA <MDA SR-152-1073 Batch 67 Clean Stockpile 10 6.32E-01 1.65E-01 <MDA <MDA SR-152-1074 Batch 67 Clean Stockpile 11 4.34E-01 1.47E-01 <MDA <MDA SR-152-1075 Batch 67 Clean Stockpile 12 5.50E-01 1.74E-01 <MDA <MDA SR-152-1076 Batch 67 Clean Stockpile 13 6.60E-01 1.77E-01 <MDA <MDA SR-152-1077 Batch 67 Clean Stockpile 14 4.86E-01 1.49E-01 <MDA <MDA SR-152-1078 Batch 67 Clean Stockpile 15 6.01E-01 1.56E-01 <MDA <MDA SR-152-1079 Batch 67 Clean Stockpile 16 4.91E-01 1.45E-01 <MDA <MDA SR-152-1080 Batch 68 Clean Stockpile 1 5.63E-01 1.70E-01 <MDA <MDA SR-152-1081 Batch 68 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1082 Batch 68 Clean Stockpile 3 3.95E-01 1.45E-01 <MDA <MDA SR-152-1083 Batch 68 Clean Stockpile 4 4.65E-01 1.48E-01 <MDA <MDA SR-152-1084 Batch 68 Clean Stockpile 5 6.48E-01 1.73E-01 <MDA <MDA SR-152-1085 Batch 68 Clean Stockpile 6 5.45E-01 1.53E-01 <MDA <MDA SR-152-1086 Batch 68 Clean Stockpile 7 5.20E-01 1.49E-01 <MDA <MDA SR-152-1087 Batch 68 Clean Stockpile 8 1.07E+00 2.17E-01 <MDA <MDA SR-152-1088 Batch 68 Clean Stockpile 9 6.34E-01 1.61E-01 <MDA <MDA SR-152-1089 Batch 68 Clean Stockpile 10 4.60E-01 1.38E-01 <MDA <MDA SR-152-1090 Batch 68 Clean Stockpile 11 4.45E-01 1.43E-01 <MDA <MDA SR-152-1091 Batch 68 Clean Stockpile 12 6.13E-01 1.58E-01 <MDA <MDA SR-152-1092 Batch 68 Clean Stockpile 13 4.66E-01 1.44E-01 <MDA <MDA SR-152-1093 Batch 68 Clean Stockpile 14 5.56E-01 1.61E-01 <MDA <MDA SR-152-1094 Batch 68 Clean Stockpile 15 3.52E-01 1.33E-01 <MDA <MDA SR-152-1095 Batch 68 Clean Stockpile 16 4.19E-01 1.33E-01 <MDA <MDA SR-152-1096 Batch 69 Clean Stockpile 1 3.23E-01 1.20E-01 <MDA <MDA SR-152-1097 Batch 69 Clean Stockpile 2 2.77E-01 1.21E-01 <MDA <MDA SR-152-1098 Batch 69 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1099 Batch 69 Clean Stockpile 4 5.44E-01 1.52E-01 <MDA <MDA SR-152-1100 Batch 69 Clean Stockpile 5 3.55E-01 1.36E-01 <MDA <MDA SR-152-1101 Batch 69 Clean Stockpile 6 3.90E-01 1.27E-01 <MDA <MDA SR-152-1102 Batch 69 Clean Stockpile 7 3.66E-01 1.26E-01 <MDA <MDA SR-152-1103 Batch 69 Clean Stockpile 8 3.60E-01 1.20E-01 <MDA <MDA SR-152-1104 Batch 69 Clean Stockpile 9 2.09E-01 9.14E-02 <MDA <MDA SR-152-1105 Batch 69 Clean Stockpile 10 2.60E-01 1.02E-01 <MDA <MDA SR-152-1106 Batch 69 Clean Stockpile 11 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 32 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1107 Batch 69 Clean Stockpile 12 2.61E-01 1.05E-01 <MDA <MDA SR-152-1108 Batch 69 Clean Stockpile 13 3.82E-01 1.29E-01 <MDA <MDA SR-152-1109 Batch 69 Clean Stockpile 14 3.49E-01 1.22E-01 <MDA <MDA SR-152-1110 Batch 69 Clean Stockpile 15 3.81E-01 1.28E-01 <MDA <MDA SR-152-1111 Batch 69 Clean Stockpile 16 4.43E-01 1.13E-01 <MDA <MDA SR-152-1112 Batch 70 Clean Stockpile 1 3.16E-01 1.10E-01 <MDA <MDA SR-152-1113 Batch 70 Clean Stockpile 2 3.19E-01 1.17E-01 <MDA <MDA SR-152-1114 Batch 70 Clean Stockpile 3 3.20E-01 1.08E-01 <MDA <MDA SR-152-1115 Batch 70 Clean Stockpile 4 4.68E-01 1.38E-01 <MDA <MDA SR-152-1116 Batch 70 Clean Stockpile 5 5.77E-01 1.56E-01 <MDA <MDA SR-152-1117 Batch 70 Clean Stockpile 6 2.38E-01 9.74E-02 <MDA <MDA SR-152-1118 Batch 70 Clean Stockpile 7 3.62E-01 1.20E-01 <MDA <MDA SR-152-1119 Batch 70 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1120 Batch 70 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1121 Batch 70 Clean Stockpile 10 2.91E-01 1.08E-01 <MDA <MDA SR-152-1122 Batch 70 Clean Stockpile 11 4.05E-01 1.27E-01 <MDA <MDA SR-152-1123 Batch 70 Clean Stockpile 12 4.02E-01 1.26E-01 <MDA <MDA SR-152-1124 Batch 70 Clean Stockpile 13 2.06E-01 1.00E-01 <MDA <MDA SR-152-1125 Batch 70 Clean Stockpile 14 4.19E-01 1.35E-01 <MDA <MDA SR-152-1126 Batch 70 Clean Stockpile 15 2.15E-01 6.57E-02 <MDA <MDA SR-152-1127 Batch 70 Clean Stockpile 16 2.67E-01 1.01E-01 <MDA <MDA SR-152-1128 Batch 71 Clean Stockpile 1 3.08E-01 1.42E-01 <MDA <MDA SR-152-1129 Batch 71 Clean Stockpile 2 3.83E-01 1.23E-01 <MDA <MDA SR-152-1130 Batch 71 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1131 Batch 71 Clean Stockpile 4 4.36E-01 1.32E-01 <MDA <MDA SR-152-1132 Batch 71 Clean Stockpile 5 3.12E-01 1.13E-01 <MDA <MDA SR-152-1133 Batch 71 Clean Stockpile 6 3.56E-01 1.21E-01 <MDA <MDA SR-152-1134 Batch 71 Clean Stockpile 7 3.92E-01 1.24E-01 <MDA <MDA SR-152-1135 Batch 71 Clean Stockpile 8 3.49E-01 1.22E-01 <MDA <MDA SR-152-1136 Batch 71 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1137 Batch 71 Clean Stockpile 10 3.91E-01 1.24E-01 <MDA <MDA SR-152-1138 Batch 71 Clean Stockpile 11 3.34E-01 1.12E-01 <MDA <MDA SR-152-1139 Batch 71 Clean Stockpile 12 2.65E-01 1.04E-01 <MDA <MDA SR-152-1140 Batch 71 Clean Stockpile 13 2.79E-01 1.16E-01 <MDA <MDA SR-152-1141 Batch 71 Clean Stockpile 14 2.79E-01 1.02E-01 <MDA <MDA SR-152-1142 Batch 71 Clean Stockpile 15 2.86E-01 1.10E-01 <MDA <MDA SR-152-1143 Batch 71 Clean Stockpile 16 3.74E-01 1.25E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 33 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1144 Batch 72 Clean Stockpile 1 5.99E-01 1.52E-01 <MDA <MDA SR-152-1145 Batch 72 Clean Stockpile 2 3.99E-01 1.25E-01 <MDA <MDA SR-152-1146 Batch 72 Clean Stockpile 3 3.11E-01 1.07E-01 <MDA <MDA SR-152-1147 Batch 72 Clean Stockpile 4 5.57E-01 1.50E-01 <MDA <MDA SR-152-1148 Batch 72 Clean Stockpile 5 4.36E-01 1.38E-01 <MDA <MDA SR-152-1149 Batch 72 Clean Stockpile 6 3.31E-01 1.17E-01 <MDA <MDA SR-152-1150 Batch 72 Clean Stockpile 7 3.10E-01 1.10E-01 <MDA <MDA SR-152-1151 Batch 72 Clean Stockpile 8 5.61E-01 1.59E-01 <MDA <MDA SR-152-1152 Batch 72 Clean Stockpile 9 4.10E-01 1.30E-01 <MDA <MDA SR-152-1153 Batch 72 Clean Stockpile 10 4.57E-01 1.33E-01 <MDA <MDA SR-152-1154 Batch 72 Clean Stockpile 11 2.62E-01 1.03E-01 <MDA <MDA SR-152-1155 Batch 72 Clean Stockpile 12 3.89E-01 1.30E-01 <MDA <MDA SR-152-1156 Batch 72 Clean Stockpile 13 3.76E-01 1.15E-01 <MDA <MDA SR-152-1157 Batch 72 Clean Stockpile 14 4.29E-01 1.42E-01 <MDA <MDA SR-152-1158 Batch 72 Clean Stockpile 15 3.90E-01 1.49E-01 <MDA <MDA SR-152-1159 Batch 72 Clean Stockpile 16 3.98E-01 1.26E-01 <MDA <MDA SR-152-1160 Batch 73 Clean Stockpile 1 3.65E-01 1.24E-01 <MDA <MDA SR-152-1161 Batch 73 Clean Stockpile 2 6.17E-01 1.66E-01 <MDA <MDA SR-152-1162 Batch 73 Clean Stockpile 3 5.21E-01 1.43E-01 <MDA <MDA SR-152-1163 Batch 73 Clean Stockpile 4 5.40E-01 1.49E-01 <MDA <MDA SR-152-1164 Batch 73 Clean Stockpile 5 4.93E-01 1.60E-01 <MDA <MDA SR-152-1165 Batch 73 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1166 Batch 73 Clean Stockpile 7 3.51E-01 1.12E-01 <MDA <MDA SR-152-1167 Batch 73 Clean Stockpile 8 4.10E-01 1.41E-01 <MDA <MDA SR-152-1168 Batch 73 Clean Stockpile 9 3.58E-01 1.18E-01 <MDA <MDA SR-152-1169 Batch 73 Clean Stockpile 10 2.75E-01 1.12E-01 <MDA <MDA SR-152-1170 Batch 73 Clean Stockpile 11 1.66E-01 7.82E-02 <MDA <MDA SR-152-1171 Batch 73 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1172 Batch 73 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1173 Batch 73 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1174 Batch 73 Clean Stockpile 15 3.41E-01 1.19E-01 <MDA <MDA SR-152-1175 Batch 73 Clean Stockpile 16 2.13E-01 8.00E-02 <MDA <MDA SR-152-1176 Batch 74 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1177 Batch 74 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1178 Batch 74 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1179 Batch 74 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1180 Batch 74 Clean Stockpile 5 1.62E-01 7.86E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 34 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1181 Batch 74 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1182 Batch 74 Clean Stockpile 7 1.92E-01 8.84E-02 <MDA <MDA SR-152-1183 Batch 74 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1184 Batch 74 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1185 Batch 74 Clean Stockpile 10 1.83E-01 8.66E-02 <MDA <MDA SR-152-1186 Batch 74 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1187 Batch 74 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1188 Batch 74 Clean Stockpile 13 2.00E-01 9.18E-02 <MDA <MDA SR-152-1189 Batch 74 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1190 Batch 74 Clean Stockpile 15 2.07E-01 8.63E-02 <MDA <MDA SR-152-1191 Batch 74 Clean Stockpile 16 1.77E-01 5.83E-02 <MDA <MDA SR-152-1192 Batch 75 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1193 Batch 75 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1194 Batch 75 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1195 Batch 75 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1196 Batch 75 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1197 Batch 75 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1198 Batch 75 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1199 Batch 75 Clean Stockpile 8 1.63E-01 7.91E-02 <MDA <MDA SR-152-1200 Batch 75 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1201 Batch 75 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1202 Batch 75 Clean Stockpile 11 1.81E-01 8.80E-02 <MDA <MDA SR-152-1203 Batch 75 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1204 Batch 75 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1205 Batch 75 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1206 Batch 75 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1207 Batch 75 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1208 Batch 76 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1209 Batch 76 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1210 Batch 76 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1211 Batch 76 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1212 Batch 76 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1213 Batch 76 Clean Stockpile 6 1.44E-01 7.22E-02 <MDA <MDA SR-152-1214 Batch 76 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1215 Batch 76 Clean Stockpile 8 1.84E-01 8.43E-02 <MDA <MDA SR-152-1216 Batch 76 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1217 Batch 76 Clean Stockpile 10 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 35 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1218 Batch 76 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1219 Batch 76 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1220 Batch 76 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1221 Batch 76 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1222 Batch 76 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1223 Batch 76 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1224 Batch 77 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1225 Batch 77 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1226 Batch 77 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1227 Batch 77 Clean Stockpile 4 2.20E-01 9.61E-02 <MDA <MDA SR-152-1228 Batch 77 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1229 Batch 77 Clean Stockpile 6 1.85E-01 8.11E-02 <MDA <MDA SR-152-1230 Batch 77 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1231 Batch 77 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1232 Batch 77 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1233 Batch 77 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1234 Batch 77 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1235 Batch 77 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1236 Batch 77 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1237 Batch 77 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1238 Batch 77 Clean Stockpile 15 1.61E-01 5.81E-02 <MDA <MDA SR-152-1239 Batch 77 Clean Stockpile 16 1.45E-01 5.07E-02 <MDA <MDA SR-152-1272 Batch 77 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-1273 Batch 77 Clean Stockpile 18 <MDA <MDA <MDA <MDA SR-152-1240 Batch 78 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1241 Batch 78 Clean Stockpile 2 1.85E-01 9.28E-02 <MDA <MDA SR-152-1242 Batch 78 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1243 Batch 78 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1244 Batch 78 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1245 Batch 78 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1246 Batch 78 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1247 Batch 78 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1248 Batch 78 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1249 Batch 78 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1250 Batch 78 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1251 Batch 78 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1252 Batch 78 Clean Stockpile 13 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 36 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1253 Batch 78 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1254 Batch 78 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1255 Batch 78 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1256 Batch 79 Clean Stockpile 1 5.08E-01 1.36E-01 <MDA <MDA SR-152-1257 Batch 79 Clean Stockpile 2 4.48E-01 1.44E-01 <MDA <MDA SR-152-1258 Batch 79 Clean Stockpile 3 4.03E-01 1.21E-01 <MDA <MDA SR-152-1259 Batch 79 Clean Stockpile 4 2.60E-01 1.30E-01 <MDA <MDA SR-152-1260 Batch 79 Clean Stockpile 5 4.82E-01 1.38E-01 <MDA <MDA SR-152-1261 Batch 79 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1262 Batch 79 Clean Stockpile 7 3.23E-01 1.09E-01 <MDA <MDA SR-152-1263 Batch 79 Clean Stockpile 8 2.47E-01 1.01E-01 <MDA <MDA SR-152-1264 Batch 79 Clean Stockpile 9 3.37E-01 1.19E-01 <MDA <MDA SR-152-1265 Batch 79 Clean Stockpile 10 3.14E-01 1.11E-01 <MDA <MDA SR-152-1266 Batch 79 Clean Stockpile 11 3.25E-01 1.40E-01 <MDA <MDA SR-152-1267 Batch 79 Clean Stockpile 12 3.65E-01 1.19E-01 <MDA <MDA SR-152-1268 Batch 79 Clean Stockpile 13 2.54E-01 9.99E-02 <MDA <MDA SR-152-1269 Batch 79 Clean Stockpile 14 1.95E-01 8.73E-02 <MDA <MDA SR-152-1270 Batch 79 Clean Stockpile 15 1.96E-01 8.98E-02 <MDA <MDA SR-152-1271 Batch 79 Clean Stockpile 16 2.31E-01 1.02E-01 <MDA <MDA SR-152-1274 Batch 80 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1275 Batch 80 Clean Stockpile 2 2.93E-01 1.04E-01 <MDA <MDA SR-152-1276 Batch 80 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1277 Batch 80 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1278 Batch 80 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1279 Batch 80 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1280 Batch 80 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1281 Batch 80 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1282 Batch 80 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1283 Batch 80 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1284 Batch 80 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1285 Batch 80 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1286 Batch 80 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1287 Batch 80 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1288 Batch 80 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1289 Batch 80 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1290 Batch 81 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1291 Batch 81 Clean Stockpile 2 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 37 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1292 Batch 81 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1293 Batch 81 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1294 Batch 81 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1295 Batch 81 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1296 Batch 81 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1297 Batch 81 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1298 Batch 81 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1299 Batch 81 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1300 Batch 81 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1301 Batch 81 Clean Stockpile 12 1.24E-01 5.17E-02 <MDA <MDA SR-152-1302 Batch 81 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1303 Batch 81 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1304 Batch 81 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1305 Batch 81 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1338 Batch 81 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-1306 Batch 82 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1307 Batch 82 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1308 Batch 82 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1309 Batch 82 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1310 Batch 82 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1311 Batch 82 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1312 Batch 82 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1313 Batch 82 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1314 Batch 82 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1315 Batch 82 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1316 Batch 82 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1317 Batch 82 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1318 Batch 82 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1319 Batch 82 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1320 Batch 82 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1321 Batch 82 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1322 Batch 83 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1323 Batch 83 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1324 Batch 83 Clean Stockpile 3 1.88E-01 8.88E-02 <MDA <MDA SR-152-1325 Batch 83 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1326 Batch 83 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1327 Batch 83 Clean Stockpile 6 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 38 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1328 Batch 83 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1329 Batch 83 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1330 Batch 83 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1331 Batch 83 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1332 Batch 83 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1333 Batch 83 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1334 Batch 83 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1335 Batch 83 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1336 Batch 83 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1337 Batch 83 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1339 Batch 84 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1340 Batch 84 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1341 Batch 84 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1342 Batch 84 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1343 Batch 84 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1344 Batch 84 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1345 Batch 84 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1346 Batch 84 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1347 Batch 84 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1348 Batch 84 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1349 Batch 84 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1350 Batch 84 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1351 Batch 84 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1352 Batch 84 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1353 Batch 84 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1354 Batch 84 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1355 Batch 85 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1356 Batch 85 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1357 Batch 85 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1358 Batch 85 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1359 Batch 85 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1360 Batch 85 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1361 Batch 85 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1362 Batch 85 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1363 Batch 85 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1364 Batch 85 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1365 Batch 85 Clean Stockpile 11 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 39 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1366 Batch 85 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1367 Batch 85 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1368 Batch 85 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1369 Batch 85 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1370 Batch 85 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1371 Batch 86 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1372 Batch 86 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1373 Batch 86 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1374 Batch 86 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1375 Batch 86 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1376 Batch 86 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1377 Batch 86 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1378 Batch 86 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1379 Batch 86 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1380 Batch 86 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1381 Batch 86 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1382 Batch 86 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1383 Batch 86 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1384 Batch 86 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1385 Batch 86 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1386 Batch 86 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1387 Batch 87 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1388 Batch 87 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1389 Batch 87 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1390 Batch 87 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1391 Batch 87 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1392 Batch 87 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1393 Batch 87 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1394 Batch 87 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1395 Batch 87 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1396 Batch 87 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1397 Batch 87 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1398 Batch 87 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1399 Batch 87 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1400 Batch 87 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1401 Batch 87 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1402 Batch 87 Clean Stockpile 16 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 40 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1403 Batch 88 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1404 Batch 88 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1405 Batch 88 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1406 Batch 88 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1407 Batch 88 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1408 Batch 88 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1409 Batch 88 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1410 Batch 88 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1411 Batch 88 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1412 Batch 88 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1413 Batch 88 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1414 Batch 88 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1415 Batch 88 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1416 Batch 88 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1417 Batch 88 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1418 Batch 88 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1419 Batch 89 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1420 Batch 89 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1421 Batch 89 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1422 Batch 89 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1423 Batch 89 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1424 Batch 89 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1425 Batch 89 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1426 Batch 89 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1427 Batch 89 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1428 Batch 89 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1429 Batch 89 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1430 Batch 89 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1431 Batch 89 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1432 Batch 89 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1433 Batch 89 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1434 Batch 89 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1435 Batch 90 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1436 Batch 90 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1437 Batch 90 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1438 Batch 90 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1439 Batch 90 Clean Stockpile 5 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 41 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1440 Batch 90 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1441 Batch 90 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1442 Batch 90 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1443 Batch 90 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1444 Batch 90 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1445 Batch 90 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1446 Batch 90 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1447 Batch 90 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1448 Batch 90 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1449 Batch 90 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1450 Batch 90 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1451 Batch 91 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1452 Batch 91 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1453 Batch 91 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1454 Batch 91 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1455 Batch 91 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1456 Batch 91 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1457 Batch 91 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1458 Batch 91 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1459 Batch 91 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1460 Batch 91 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1461 Batch 91 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1462 Batch 91 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1463 Batch 91 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1464 Batch 91 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1465 Batch 91 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1466 Batch 91 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1467 Batch 92 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1468 Batch 92 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1469 Batch 92 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1470 Batch 92 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1471 Batch 92 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1472 Batch 92 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1473 Batch 92 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1474 Batch 92 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1475 Batch 92 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1476 Batch 92 Clean Stockpile 10 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 42 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1477 Batch 92 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1478 Batch 92 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1479 Batch 92 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1480 Batch 92 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1481 Batch 92 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1482 Batch 92 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1483 Batch 93 Below Criteria 1 <MDA <MDA <MDA <MDA SR-152-1484 Batch 93 Below Criteria 2 <MDA <MDA <MDA <MDA SR-152-1485 Batch 93 Below Criteria 3 <MDA <MDA <MDA <MDA SR-152-1486 Batch 93 Below Criteria 4 <MDA <MDA <MDA <MDA SR-152-1487 Batch 93 Below Criteria 5 <MDA <MDA <MDA <MDA SR-152-1488 Batch 93 Below Criteria 6 <MDA <MDA <MDA <MDA SR-152-1489 Batch 93 Below Criteria 7 <MDA <MDA <MDA <MDA SR-152-1490 Batch 93 Below Criteria 8 <MDA <MDA <MDA <MDA SR-152-1491 Batch 93 Below Criteria 9 <MDA <MDA <MDA <MDA SR-152-1492 Batch 93 Below Criteria 10 <MDA <MDA <MDA <MDA SR-152-1493 Batch 93 Below Criteria 11 <MDA <MDA <MDA <MDA SR-152-1494 Batch 93 Below Criteria 12 <MDA <MDA <MDA <MDA SR-152-1495 Batch 93 Below Criteria 13 <MDA <MDA <MDA <MDA SR-152-1496 Batch 93 Below Criteria 14 <MDA <MDA <MDA <MDA SR-152-1497 Batch 93 Below Criteria 15 <MDA <MDA <MDA <MDA SR-152-1498 Batch 93 Below Criteria 16 <MDA <MDA <MDA <MDA SR-152-1499 Batch 94 Below Criteria 1 <MDA <MDA <MDA <MDA SR-152-1500 Batch 94 Below Criteria 2 <MDA <MDA <MDA <MDA SR-152-1501 Batch 94 Below Criteria 3 <MDA <MDA <MDA <MDA SR-152-1502 Batch 94 Below Criteria 4 <MDA <MDA <MDA <MDA SR-152-1503 Batch 94 Below Criteria 5 <MDA <MDA <MDA <MDA SR-152-1504 Batch 94 Below Criteria 6 <MDA <MDA <MDA <MDA SR-152-1505 Batch 94 Below Criteria 7 <MDA <MDA <MDA <MDA SR-152-1506 Batch 94 Below Criteria 8 <MDA <MDA <MDA <MDA SR-152-1507 Batch 94 Below Criteria 9 <MDA <MDA <MDA <MDA SR-152-1508 Batch 94 Below Criteria 10 <MDA <MDA <MDA <MDA SR-152-1509 Batch 94 Below Criteria 11 <MDA <MDA <MDA <MDA SR-152-1510 Batch 94 Below Criteria 12 <MDA <MDA <MDA <MDA SR-152-1511 Batch 94 Below Criteria 13 <MDA <MDA <MDA <MDA SR-152-1512 Batch 94 Below Criteria 14 <MDA <MDA <MDA <MDA SR-152-1513 Batch 94 Below Criteria 15 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 43 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1514 Batch 94 Below Criteria 16 <MDA <MDA <MDA <MDA SR-152-1515 Batch 95 Below Criteria 1 <MDA <MDA <MDA <MDA SR-152-1516 Batch 95 Below Criteria 2 <MDA <MDA <MDA <MDA SR-152-1517 Batch 95 Below Criteria 3 <MDA <MDA <MDA <MDA SR-152-1518 Batch 95 Below Criteria 4 <MDA <MDA <MDA <MDA SR-152-1519 Batch 95 Below Criteria 5 <MDA <MDA <MDA <MDA SR-152-1520 Batch 95 Below Criteria 6 <MDA <MDA <MDA <MDA SR-152-1521 Batch 95 Below Criteria 7 <MDA <MDA <MDA <MDA SR-152-1522 Batch 95 Below Criteria 8 <MDA <MDA <MDA <MDA SR-152-1523 Batch 95 Below Criteria 9 <MDA <MDA <MDA <MDA SR-152-1524 Batch 95 Below Criteria 10 <MDA <MDA <MDA <MDA SR-152-1525 Batch 95 Below Criteria 11 <MDA <MDA <MDA <MDA SR-152-1526 Batch 95 Below Criteria 12 <MDA <MDA <MDA <MDA SR-152-1527 Batch 95 Below Criteria 13 <MDA <MDA <MDA <MDA SR-152-1528 Batch 95 Below Criteria 14 <MDA <MDA <MDA <MDA SR-152-1529 Batch 95 Below Criteria 15 <MDA <MDA <MDA <MDA SR-152-1530 Batch 95 Below Criteria 16 <MDA <MDA <MDA <MDA SR-152-1531 Batch 96 Below Criteria 1 <MDA <MDA <MDA <MDA SR-152-1532 Batch 96 Below Criteria 2 <MDA <MDA <MDA <MDA SR-152-1533 Batch 96 Below Criteria 3 <MDA <MDA <MDA <MDA SR-152-1534 Batch 96 Below Criteria 4 <MDA <MDA <MDA <MDA SR-152-1535 Batch 96 Below Criteria 5 <MDA <MDA <MDA <MDA SR-152-1536 Batch 96 Below Criteria 6 <MDA <MDA <MDA <MDA SR-152-1537 Batch 96 Below Criteria 7 <MDA <MDA <MDA <MDA SR-152-1538 Batch 96 Below Criteria 8 <MDA <MDA <MDA <MDA SR-152-1539 Batch 96 Below Criteria 9 <MDA <MDA <MDA <MDA SR-152-1540 Batch 96 Below Criteria 10 <MDA <MDA <MDA <MDA SR-152-1541 Batch 96 Below Criteria 11 <MDA <MDA <MDA <MDA SR-152-1542 Batch 96 Below Criteria 12 <MDA <MDA <MDA <MDA SR-152-1545 Batch 96 Below Criteria 13 <MDA <MDA <MDA <MDA SR-152-1582 Batch 96 Below Criteria 14 <MDA <MDA <MDA <MDA SR-152-1543 Batch 96 Below Criteria 15 <MDA <MDA <MDA <MDA SR-152-1544 Batch 96 Below Criteria 16 <MDA <MDA <MDA <MDA SR-152-1546 Batch 97 Below Criteria 1 <MDA <MDA <MDA <MDA SR-152-1547 Batch 97 Below Criteria 2 <MDA <MDA <MDA <MDA SR-152-1548 Batch 97 Below Criteria 3 <MDA <MDA <MDA <MDA SR-152-1549 Batch 97 Below Criteria 4 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 44 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1550 Batch 97 Below Criteria 5 <MDA <MDA <MDA <MDA SR-152-1551 Batch 97 Below Criteria 6 <MDA <MDA <MDA <MDA SR-152-1552 Batch 97 Below Criteria 7 <MDA <MDA <MDA <MDA SR-152-1553 Batch 97 Below Criteria 8 <MDA <MDA <MDA <MDA SR-152-1554 Batch 97 Below Criteria 9 <MDA <MDA <MDA <MDA SR-152-1555 Batch 97 Below Criteria 10 <MDA <MDA <MDA <MDA SR-152-1556 Batch 97 Below Criteria 11 <MDA <MDA <MDA <MDA SR-152-1557 Batch 97 Below Criteria 12 <MDA <MDA <MDA <MDA SR-152-1558 Batch 97 Below Criteria 13 <MDA <MDA <MDA <MDA SR-152-1559 Batch 97 Below Criteria 14 <MDA <MDA <MDA <MDA SR-152-1560 Batch 97 Below Criteria 15 <MDA <MDA <MDA <MDA SR-152-1561 Batch 97 Below Criteria 16 <MDA <MDA <MDA <MDA SR-152-1562 Batch 98 Below Criteria 1 <MDA <MDA <MDA <MDA SR-152-1563 Batch 98 Below Criteria 2 <MDA <MDA <MDA <MDA SR-152-1564 Batch 98 Below Criteria 3 <MDA <MDA <MDA <MDA SR-152-1565 Batch 98 Below Criteria 4 <MDA <MDA <MDA <MDA SR-152-1566 Batch 98 Below Criteria 5 <MDA <MDA <MDA <MDA SR-152-1567 Batch 98 Below Criteria 6 <MDA <MDA <MDA <MDA SR-152-1568 Batch 98 Below Criteria 7 <MDA <MDA <MDA <MDA SR-152-1569 Batch 98 Below Criteria 8 <MDA <MDA <MDA <MDA SR-152-1570 Batch 98 Below Criteria 9 <MDA <MDA <MDA <MDA SR-152-1571 Batch 98 Below Criteria 10 <MDA <MDA <MDA <MDA SR-152-1572 Batch 98 Below Criteria 11 <MDA <MDA <MDA <MDA SR-152-1573 Batch 98 Below Criteria 12 <MDA <MDA <MDA <MDA SR-152-1574 Batch 98 Below Criteria 13 <MDA <MDA <MDA <MDA SR-152-1575 Batch 98 Below Criteria 14 <MDA <MDA <MDA <MDA SR-152-1576 Batch 98 Below Criteria 15 <MDA <MDA <MDA <MDA SR-152-1577 Batch 98 Below Criteria 16 <MDA <MDA <MDA <MDA SR-152-1578 Batch 99 Below Criterai 1 <MDA <MDA <MDA <MDA SR-152-1579 Batch 99 Below Criterai 2 <MDA <MDA <MDA <MDA SR-152-1580 Batch 99 Below Criterai 3 <MDA <MDA <MDA <MDA SR-152-1581 Batch 99 Below Criterai 4 <MDA <MDA <MDA <MDA SR-152-1583 Batch 99 Below Criterai 5 <MDA <MDA <MDA <MDA SR-152-1584 Batch 99 Below Criterai 6 <MDA <MDA <MDA <MDA SR-152-1585 Batch 99 Below Criterai 7 <MDA <MDA <MDA <MDA SR-152-1586 Batch 99 Below Criterai 8 <MDA <MDA <MDA <MDA SR-152-1587 Batch 99 Below Criterai 9 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 45 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1588 Batch 99 Below Criteria 10 <MDA <MDA <MDA <MDA SR-152-1589 Batch 99 Below Criteria 11 2.04E-01 9.16E-02 <MDA <MDA SR-152-1590 Batch 99 Below Criteria 12 <MDA <MDA <MDA <MDA SR-152-1591 Batch 99 Below Criteria 13 <MDA <MDA <MDA <MDA SR-152-1592 Batch 99 Below Criteria 14 <MDA <MDA <MDA <MDA SR-152-1593 Batch 99 Below Criteria 15 <MDA <MDA <MDA <MDA SR-152-1594 Batch 99 Below Criteria 16 <MDA <MDA <MDA <MDA SR-152-1595 Batch 100 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1596 Batch 100 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1597 Batch 100 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1598 Batch 100 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1599 Batch 100 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1600 Batch 100 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1601 Batch 100 Clean Stockpile 7 3.60E-01 1.14E-01 <MDA <MDA SR-152-1602 Batch 100 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1603 Batch 100 Clean Stockpile 9 2.14E-01 9.13E-02 <MDA <MDA SR-152-1604 Batch 100 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1605 Batch 100 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1606 Batch 100 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1607 Batch 100 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1608 Batch 100 Clean Stockpile 14 1.82E-01 8.38E-02 <MDA <MDA SR-152-1609 Batch 100 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1610 Batch 100 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1611 Batch 101 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1612 Batch 101 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1613 Batch 101 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1614 Batch 101 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1615 Batch 101 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1616 Batch 101 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1617 Batch 101 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1618 Batch 101 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1619 Batch 101 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1620 Batch 101 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1621 Batch 101 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1622 Batch 101 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1623 Batch 101 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1624 Batch 101 Clean Stockpile 14 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 46 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1625 Batch 101 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1626 Batch 101 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1627 Batch 102 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1628 Batch 102 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1629 Batch 102 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1630 Batch 102 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1631 Batch 102 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1632 Batch 102 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1633 Batch 102 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1634 Batch 102 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1635 Batch 102 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1636 Batch 102 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1637 Batch 102 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1638 Batch 102 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1639 Batch 102 Clean Stockpile 13 2.15E-01 9.40E-02 <MDA <MDA SR-152-1640 Batch 102 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1641 Batch 102 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1642 Batch 102 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1643 Batch 103 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1644 Batch 103 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1645 Batch 103 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1646 Batch 103 Clean Stockpile 4 2.50E-01 9.66E-02 <MDA <MDA SR-152-1647 Batch 103 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1648 Batch 103 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1649 Batch 103 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1650 Batch 103 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1651 Batch 103 Clean Stockpile 9 2.51E-01 1.17E-01 <MDA <MDA SR-152-1652 Batch 103 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1653 Batch 103 Clean Stockpile 11 1.99E-01 9.14E-02 <MDA <MDA SR-152-1654 Batch 103 Clean Stockpile 12 2.78E-01 1.07E-01 <MDA <MDA SR-152-1655 Batch 103 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1656 Batch 103 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1657 Batch 103 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1658 Batch 103 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1659 Batch 104 Clean Stockpile 1 3.01E-01 1.07E-01 <MDA <MDA SR-152-1660 Batch 104 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1661 Batch 104 Clean Stockpile 3 2.34E-01 1.16E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 47 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1662 Batch 104 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1663 Batch 104 Clean Stockpile 5 2.43E-01 7.69E-02 <MDA <MDA SR-152-1664 Batch 104 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1665 Batch 104 Clean Stockpile 7 2.48E-01 1.09E-01 <MDA <MDA SR-152-1666 Batch 104 Clean Stockpile 8 2.23E-01 9.98E-02 <MDA <MDA SR-152-1667 Batch 104 Clean Stockpile 9 1.81E-01 8.13E-02 <MDA <MDA SR-152-1668 Batch 104 Clean Stockpile 10 1.72E-01 8.62E-02 <MDA <MDA SR-152-1669 Batch 104 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1670 Batch 104 Clean Stockpile 12 2.36E-01 8.93E-02 <MDA <MDA SR-152-1671 Batch 104 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1672 Batch 104 Clean Stockpile 14 3.41E-01 1.14E-01 <MDA <MDA SR-152-1673 Batch 104 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1674 Batch 104 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1675 Batch 105 Clean Stockpile 1 2.40E-01 1.08E-01 <MDA <MDA SR-152-1676 Batch 105 Clean Stockpile 2 3.13E-01 1.15E-01 <MDA <MDA SR-152-1677 Batch 105 Clean Stockpile 3 3.54E-01 1.20E-01 <MDA <MDA SR-152-1678 Batch 105 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1679 Batch 105 Clean Stockpile 5 2.37E-01 1.09E-01 <MDA <MDA SR-152-1680 Batch 105 Clean Stockpile 6 2.63E-01 1.05E-01 <MDA <MDA SR-152-1681 Batch 105 Clean Stockpile 7 3.00E-01 1.14E-01 <MDA <MDA SR-152-1682 Batch 105 Clean Stockpile 8 2.16E-01 9.67E-02 <MDA <MDA SR-152-1683 Batch 105 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1684 Batch 105 Clean Stockpile 10 1.45E-01 7.27E-02 <MDA <MDA SR-152-1685 Batch 105 Clean Stockpile 11 3.48E-01 1.11E-01 <MDA <MDA SR-152-1686 Batch 105 Clean Stockpile 12 2.64E-01 9.68E-02 <MDA <MDA SR-152-1687 Batch 105 Clean Stockpile 13 2.78E-01 1.02E-01 <MDA <MDA SR-152-1688 Batch 105 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1689 Batch 105 Clean Stockpile 15 2.54E-01 7.84E-02 <MDA <MDA SR-152-1690 Batch 105 Clean Stockpile 16 2.65E-01 9.87E-02 <MDA <MDA SR-152-1691 Batch 106 Clean Stockpile 1 2.26E-01 9.68E-02 <MDA <MDA SR-152-1692 Batch 106 Clean Stockpile 2 3.82E-01 1.35E-01 <MDA <MDA SR-152-1693 Batch 106 Clean Stockpile 3 2.90E-01 1.08E-01 <MDA <MDA SR-152-1694 Batch 106 Clean Stockpile 4 3.07E-01 1.49E-01 <MDA <MDA SR-152-1695 Batch 106 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1696 Batch 106 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1697 Batch 106 Clean Stockpile 7 2.18E-01 9.75E-02 <MDA <MDA SR-152-1698 Batch 106 Clean Stockpile 8 3.37E-01 1.23E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 48 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1699 Batch 106 Clean Stockpile 9 2.47E-01 1.12E-01 <MDA <MDA SR-152-1700 Batch 106 Clean Stockpile 10 3.09E-01 1.13E-01 <MDA <MDA SR-152-1701 Batch 106 Clean Stockpile 11 3.35E-01 1.23E-01 <MDA <MDA SR-152-1702 Batch 106 Clean Stockpile 12 2.98E-01 1.11E-01 <MDA <MDA SR-152-1703 Batch 106 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1704 Batch 106 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1705 Batch 106 Clean Stockpile 15 3.24E-01 1.10E-01 <MDA <MDA SR-152-1706 Batch 106 Clean Stockpile 16 2.21E-01 1.04E-01 <MDA <MDA SR-152-1707 Batch 107 Clean Stockpile 1 3.50E-01 1.19E-01 <MDA <MDA SR-152-1708 Batch 107 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1709 Batch 107 Clean Stockpile 3 3.65E-01 1.34E-01 <MDA <MDA SR-152-1710 Batch 107 Clean Stockpile 4 2.99E-01 1.13E-01 <MDA <MDA SR-152-1711 Batch 107 Clean Stockpile 5 3.49E-01 1.26E-01 <MDA <MDA SR-152-1712 Batch 107 Clean Stockpile 6 2.79E-01 1.04E-01 <MDA <MDA SR-152-1713 Batch 107 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1714 Batch 107 Clean Stockpile 8 2.75E-01 1.13E-01 <MDA <MDA SR-152-1715 Batch 107 Clean Stockpile 9 2.05E-01 8.97E-02 <MDA <MDA SR-152-1716 Batch 107 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1717 Batch 107 Clean Stockpile 11 3.52E-01 1.23E-01 <MDA <MDA SR-152-1718 Batch 107 Clean Stockpile 12 4.26E-01 1.34E-01 <MDA <MDA SR-152-1719 Batch 107 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1720 Batch 107 Clean Stockpile 14 2.19E-01 1.03E-01 <MDA <MDA SR-152-1721 Batch 107 Clean Stockpile 15 2.35E-01 1.08E-01 <MDA <MDA SR-152-1722 Batch 107 Clean Stockpile 16 3.90E-01 1.43E-01 <MDA <MDA SR-152-1723 Batch 108 Clean Stockpile 1 1.86E-01 8.53E-02 <MDA <MDA SR-152-1724 Batch 108 Clean Stockpile 2 3.57E-01 1.21E-01 <MDA <MDA SR-152-1725 Batch 108 Clean Stockpile 3 3.34E-01 1.25E-01 <MDA <MDA SR-152-1726 Batch 108 Clean Stockpile 4 2.49E-01 9.80E-02 <MDA <MDA SR-152-1727 Batch 108 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1728 Batch 108 Clean Stockpile 6 2.34E-01 9.77E-02 <MDA <MDA SR-152-1729 Batch 108 Clean Stockpile 7 2.56E-01 1.05E-01 <MDA <MDA SR-152-1730 Batch 108 Clean Stockpile 8 2.25E-01 9.63E-02 <MDA <MDA SR-152-1731 Batch 108 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1732 Batch 108 Clean Stockpile 10 2.27E-01 8.74E-02 <MDA <MDA SR-152-1733 Batch 108 Clean Stockpile 11 2.14E-01 9.60E-02 <MDA <MDA SR-152-1734 Batch 108 Clean Stockpile 12 3.56E-01 1.23E-01 <MDA <MDA SR-152-1735 Batch 108 Clean Stockpile 13 1.99E-01 9.13E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 49 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1736 Batch 108 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1737 Batch 108 Clean Stockpile 15 2.62E-01 1.12E-01 <MDA <MDA SR-152-1738 Batch 108 Clean Stockpile 16 2.53E-01 9.75E-02 <MDA <MDA SR-152-1739 Batch 109 Clean Stockpile 1 2.02E-01 8.82E-02 <MDA <MDA SR-152-1740 Batch 109 Clean Stockpile 2 3.59E-01 1.22E-01 <MDA <MDA SR-152-1741 Batch 109 Clean Stockpile 3 1.84E-01 9.21E-02 <MDA <MDA SR-152-1742 Batch 109 Clean Stockpile 4 3.15E-01 8.54E-02 <MDA <MDA SR-152-1743 Batch 109 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1744 Batch 109 Clean Stockpile 6 2.39E-01 1.04E-01 <MDA <MDA SR-152-1745 Batch 109 Clean Stockpile 7 2.41E-01 9.88E-02 <MDA <MDA SR-152-1746 Batch 109 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1747 Batch 109 Clean Stockpile 9 2.44E-01 9.99E-02 <MDA <MDA SR-152-1748 Batch 109 Clean Stockpile 10 2.20E-01 9.85E-02 <MDA <MDA SR-152-1749 Batch 109 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1750 Batch 109 Clean Stockpile 12 2.04E-01 6.63E-02 <MDA <MDA SR-152-1751 Batch 109 Clean Stockpile 13 1.67E-01 8.35E-02 <MDA <MDA SR-152-1752 Batch 109 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1753 Batch 109 Clean Stockpile 15 2.94E-01 1.11E-01 <MDA <MDA SR-152-1754 Batch 109 Clean Stockpile 16 1.85E-01 8.99E-02 <MDA <MDA SR-152-1755 Batch 110 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1756 Batch 110 Clean Stockpile 2 2.65E-01 1.13E-01 <MDA <MDA SR-152-1757 Batch 110 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1758 Batch 110 Clean Stockpile 4 2.68E-01 1.05E-01 <MDA <MDA SR-152-1759 Batch 110 Clean Stockpile 5 2.33E-01 9.74E-02 <MDA <MDA SR-152-1760 Batch 110 Clean Stockpile 6 2.16E-01 9.46E-02 <MDA <MDA SR-152-1761 Batch 110 Clean Stockpile 7 2.50E-01 1.02E-01 <MDA <MDA SR-152-1762 Batch 110 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1763 Batch 110 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1764 Batch 110 Clean Stockpile 10 4.22E-01 1.31E-01 <MDA <MDA SR-152-1765 Batch 110 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1766 Batch 110 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1767 Batch 110 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1768 Batch 110 Clean Stockpile 14 2.83E-01 1.13E-01 <MDA <MDA SR-152-1769 Batch 110 Clean Stockpile 15 2.45E-01 1.00E-01 <MDA <MDA SR-152-1770 Batch 110 Clean Stockpile 16 1.60E-01 6.75E-02 <MDA <MDA SR-152-1771 Batch 111 Clean Stockpile 1 3.06E-01 1.09E-01 <MDA <MDA SR-152-1772 Batch 111 Clean Stockpile 2 2.66E-01 1.01E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 50 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1773 Batch 111 Clean Stockpile 3 3.07E-01 1.09E-01 <MDA <MDA SR-152-1774 Batch 111 Clean Stockpile 4 3.21E-01 1.14E-01 <MDA <MDA SR-152-1775 Batch 111 Clean Stockpile 5 2.26E-01 9.67E-02 <MDA <MDA SR-152-1776 Batch 111 Clean Stockpile 6 4.04E-01 1.24E-01 <MDA <MDA SR-152-1777 Batch 111 Clean Stockpile 7 2.75E-01 1.01E-01 <MDA <MDA SR-152-1778 Batch 111 Clean Stockpile 8 4.07E-01 1.36E-01 <MDA <MDA SR-152-1779 Batch 111 Clean Stockpile 9 2.49E-01 1.04E-01 <MDA <MDA SR-152-1780 Batch 111 Clean Stockpile 10 2.62E-01 7.74E-02 <MDA <MDA SR-152-1781 Batch 111 Clean Stockpile 11 2.41E-01 9.87E-02 <MDA <MDA SR-152-1782 Batch 111 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1783 Batch 111 Clean Stockpile 13 2.28E-01 9.34E-02 <MDA <MDA SR-152-1784 Batch 111 Clean Stockpile 14 3.50E-01 1.17E-01 <MDA <MDA SR-152-1785 Batch 111 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1786 Batch 111 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1787 Batch 112 Clean Stockpile 1 2.34E-01 9.79E-02 <MDA <MDA SR-152-1788 Batch 112 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1789 Batch 112 Clean Stockpile 3 2.45E-01 9.62E-02 <MDA <MDA SR-152-1790 Batch 112 Clean Stockpile 4 2.50E-01 1.04E-01 <MDA <MDA SR-152-1791 Batch 112 Clean Stockpile 5 2.96E-01 1.12E-01 <MDA <MDA SR-152-1792 Batch 112 Clean Stockpile 6 2.39E-01 9.58E-02 <MDA <MDA SR-152-1793 Batch 112 Clean Stockpile 7 2.29E-01 1.15E-01 <MDA <MDA SR-152-1794 Batch 112 Clean Stockpile 8 3.85E-01 1.31E-01 <MDA <MDA SR-152-1795 Batch 112 Clean Stockpile 9 3.07E-01 1.12E-01 <MDA <MDA SR-152-1796 Batch 112 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1797 Batch 112 Clean Stockpile 11 4.03E-01 1.30E-01 <MDA <MDA SR-152-1798 Batch 112 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1799 Batch 112 Clean Stockpile 13 2.54E-01 9.95E-02 <MDA <MDA SR-152-1800 Batch 112 Clean Stockpile 14 2.67E-01 9.94E-02 <MDA <MDA SR-152-1801 Batch 112 Clean Stockpile 15 2.07E-01 8.36E-02 <MDA <MDA SR-152-1802 Batch 112 Clean Stockpile 16 2.70E-01 7.10E-02 <MDA <MDA SR-152-1803 Batch 113 Clean Stockpile 1 2.25E-01 9.20E-02 <MDA <MDA SR-152-1804 Batch 113 Clean Stockpile 2 2.83E-01 1.13E-01 <MDA <MDA SR-152-1805 Batch 113 Clean Stockpile 3 2.15E-01 9.19E-02 <MDA <MDA SR-152-1806 Batch 113 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1807 Batch 113 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1808 Batch 113 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1809 Batch 113 Clean Stockpile 7 2.37E-01 1.01E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 51 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1810 Batch 113 Clean Stockpile 8 2.74E-01 1.06E-01 <MDA <MDA SR-152-1811 Batch 113 Clean Stockpile 9 1.97E-01 9.28E-02 <MDA <MDA SR-152-1812 Batch 113 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1813 Batch 113 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1814 Batch 113 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1815 Batch 113 Clean Stockpile 13 2.34E-01 9.37E-02 <MDA <MDA Batch 113 Clean Stockpile-14 SR-152-1816 QCI 3.03E-01 1.19E-01 <MDA <MDA Batch 113 Clean Stockpile-15 SR-152-1817 QCR 2.57E-01 1.03E-01 <MDA <MDA SR-152-1882 Batch 113 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1818 Batch 114 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1819 Batch 114 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1820 Batch 114 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1821 Batch 114 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1822 Batch 114 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1823 Batch 114 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1824 Batch 114 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1825 Batch 114 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1826 Batch 114 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1827 Batch 114 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1828 Batch 114 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1829 Batch 114 Clean Stockpile 12 2.09E-01 9.37E-02 <MDA <MDA SR-152-1830 Batch 114 Clean Stockpile 13 <MDA <MDA <MDA <MDA Batch 114 Clean Stockpile-14 SR-152-1831 QCI <MDA <MDA <MDA <MDA Batch 114 Clean Stockpile-15 SR-152-1832 QCR <MDA <MDA <MDA <MDA SR-152-1883 Batch 114 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1833 Batch 115 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1834 Batch 115 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1835 Batch 115 Clean Stockpile 3 2.04E-01 9.16E-02 <MDA <MDA SR-152-1836 Batch 115 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1837 Batch 115 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1838 Batch 115 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1839 Batch 115 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1840 Batch 115 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1841 Batch 115 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1842 Batch 115 Clean Stockpile 10 1.90E-01 9.22E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 52 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1843 Batch 115 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1844 Batch 115 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1845 Batch 115 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1846 Batch 115 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1847 Batch 115 Clean Stockpile 15 1.78E-01 8.40E-02 <MDA <MDA SR-152-1848 Batch 115 Clean Stockpile 16 1.89E-01 6.92E-02 <MDA <MDA SR-152-1849 Batch 116 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1850 Batch 116 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1851 Batch 116 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1852 Batch 116 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1853 Batch 116 Clean Stockpile 5 2.07E-01 9.53E-02 <MDA <MDA SR-152-1854 Batch 116 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1855 Batch 116 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1856 Batch 116 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1857 Batch 116 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1858 Batch 116 Clean Stockpile 10 2.63E-01 1.05E-01 <MDA <MDA SR-152-1859 Batch 116 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1860 Batch 116 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1861 Batch 116 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1862 Batch 116 Clean Stockpile 14 <MDA <MDA <MDA <MDA Batch 116 Clean Stockpile-15 SR-152-1863 QCI <MDA <MDA <MDA <MDA Batch 116 Clean Stockpile-16 SR-152-1864 QCR <MDA <MDA <MDA <MDA SR-152-1881 Batch 116 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-1865 Batch 117 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1866 Batch 117 Clean Stockpile 2 2.30E-01 1.06E-01 <MDA <MDA SR-152-1867 Batch 117 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1868 Batch 117 Clean Stockpile 4 5.87E-01 1.64E-01 <MDA <MDA SR-152-1869 Batch 117 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1870 Batch 117 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1871 Batch 117 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1872 Batch 117 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1873 Batch 117 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1874 Batch 117 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1875 Batch 117 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1876 Batch 117 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1877 Batch 117 Clean Stockpile 13 1.58E-01 7.91E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 53 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1878 Batch 117 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1879 Batch 117 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1880 Batch 117 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1884 Batch 118 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1885 Batch 118 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1886 Batch 118 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1887 Batch 118 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1888 Batch 118 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1889 Batch 118 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1890 Batch 118 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1891 Batch 118 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1892 Batch 118 Clean Stockpile 9 1.66E-01 8.07E-02 <MDA <MDA SR-152-1893 Batch 118 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1894 Batch 118 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1895 Batch 118 Clean Stockpile 12 2.00E-01 9.21E-02 <MDA <MDA SR-152-1896 Batch 118 Clean Stockpile 13 2.12E-01 9.50E-02 <MDA <MDA SR-152-1897 Batch 118 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1898 Batch 118 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1899 Batch 118 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1900 Batch 119 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1901 Batch 119 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1902 Batch 119 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1903 Batch 119 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1904 Batch 119 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1905 Batch 119 Clean Stockpile 6 2.99E-01 1.09E-01 <MDA <MDA SR-152-1906 Batch 119 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1907 Batch 119 Clean Stockpile 8 1.73E-01 8.65E-02 <MDA <MDA SR-152-1908 Batch 119 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1909 Batch 119 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1910 Batch 119 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1911 Batch 119 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1912 Batch 119 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1913 Batch 119 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1914 Batch 119 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1915 Batch 119 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1916 Batch 120 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1917 Batch 120 Clean Stockpile 2 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 54 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1918 Batch 120 Clean Stockpile 3 2.46E-01 9.67E-02 <MDA <MDA SR-152-1919 Batch 120 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1920 Batch 120 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1921 Batch 120 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1922 Batch 120 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1923 Batch 120 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1924 Batch 120 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1925 Batch 120 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1926 Batch 120 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1927 Batch 120 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1928 Batch 120 Clean Stockpile 13 2.08E-01 9.10E-02 <MDA <MDA SR-152-1929 Batch 120 Clean Stockpile 14 1.91E-01 8.37E-02 <MDA <MDA SR-152-1930 Batch 120 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1931 Batch 120 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1932 Batch 121 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1933 Batch 121 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1934 Batch 121 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1935 Batch 121 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1936 Batch 121 Clean Stockpile 5 2.10E-01 9.64E-02 <MDA <MDA SR-152-1937 Batch 121 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1938 Batch 121 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1939 Batch 121 Clean Stockpile 8 4.01E-01 1.31E-01 <MDA <MDA SR-152-1940 Batch 121 Clean Stockpile 9 2.68E-01 1.03E-01 <MDA <MDA SR-152-1941 Batch 121 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1942 Batch 121 Clean Stockpile 11 3.04E-01 1.19E-01 <MDA <MDA SR-152-1943 Batch 121 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1944 Batch 121 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1945 Batch 121 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1946 Batch 121 Clean Stockpile 15 2.00E-01 6.77E-02 <MDA <MDA SR-152-1947 Batch 121 Clean Stockpile 16 1.81E-01 7.11E-02 <MDA <MDA SR-152-1948 Batch 122 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1949 Batch 122 Clean Stockpile 2 2.93E-01 1.09E-01 <MDA <MDA SR-152-1950 Batch 122 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1951 Batch 122 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1952 Batch 122 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1953 Batch 122 Clean Stockpile 6 1.17E-01 4.73E-02 <MDA <MDA SR-152-1954 Batch 122 Clean Stockpile 7 2.02E-01 9.04E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 55 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1955 Batch 122 Clean Stockpile 8 3.41E-01 1.17E-01 <MDA <MDA SR-152-1956 Batch 122 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1957 Batch 122 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1958 Batch 122 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1959 Batch 122 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1960 Batch 122 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1961 Batch 122 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1962 Batch 122 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1963 Batch 122 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1964 Batch 123 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1965 Batch 123 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1966 Batch 123 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1967 Batch 123 Clean Stockpile 4 2.01E-01 9.25E-02 <MDA <MDA SR-152-1968 Batch 123 Clean Stockpile 5 1.10E-01 4.91E-02 <MDA <MDA SR-152-1969 Batch 123 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1970 Batch 123 Clean Stockpile 7 1.85E-01 8.75E-02 <MDA <MDA SR-152-1971 Batch 123 Clean Stockpile 8 2.58E-01 1.03E-01 <MDA <MDA SR-152-1972 Batch 123 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1973 Batch 123 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1974 Batch 123 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1975 Batch 123 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-1976 Batch 123 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-1977 Batch 123 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1978 Batch 123 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-1979 Batch 123 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-1980 Batch 124 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-1981 Batch 124 Clean Stockpile 2 2.41E-01 1.08E-01 <MDA <MDA SR-152-1982 Batch 124 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1983 Batch 124 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-1984 Batch 124 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-1985 Batch 124 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-1986 Batch 124 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-1987 Batch 124 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-1988 Batch 124 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-1989 Batch 124 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-1990 Batch 124 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-1991 Batch 124 Clean Stockpile 12 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 56 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-1992 Batch 124 Clean Stockpile 13 2.26E-01 1.01E-01 <MDA <MDA SR-152-1993 Batch 124 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-1994 Batch 124 Clean Stockpile 15 1.55E-01 7.01E-02 <MDA <MDA SR-152-1995 Batch 124 Clean Stockpile 16 2.38E-01 8.46E-02 <MDA <MDA SR-152-1996 Batch 125 Clean Stockpile 1 2.17E-01 1.03E-01 <MDA <MDA SR-152-1997 Batch 125 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-1998 Batch 125 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-1999 Batch 125 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2000 Batch 125 Clean Stockpile 5 2.42E-01 1.06E-01 <MDA <MDA SR-152-2001 Batch 125 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2002 Batch 125 Clean Stockpile 7 2.34E-01 8.84E-02 <MDA <MDA SR-152-2003 Batch 125 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2004 Batch 125 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2005 Batch 125 Clean Stockpile 10 2.88E-01 1.18E-01 <MDA <MDA SR-152-2006 Batch 125 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2007 Batch 125 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2008 Batch 125 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2009 Batch 125 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2010 Batch 125 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2011 Batch 125 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2012 Batch 126 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2013 Batch 126 Clean Stockpile 2 2.39E-01 1.00E-01 <MDA <MDA SR-152-2014 Batch 126 Clean Stockpile 3 2.20E-01 9.39E-02 <MDA <MDA SR-152-2015 Batch 126 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2016 Batch 126 Clean Stockpile 5 1.89E-01 8.30E-02 <MDA <MDA SR-152-2017 Batch 126 Clean Stockpile 6 2.48E-01 1.02E-01 <MDA <MDA SR-152-2018 Batch 126 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2019 Batch 126 Clean Stockpile 8 2.10E-01 8.98E-02 <MDA <MDA SR-152-2020 Batch 126 Clean Stockpile 9 2.30E-01 1.06E-01 <MDA <MDA SR-152-2021 Batch 126 Clean Stockpile 10 1.24E-01 5.83E-02 <MDA <MDA SR-152-2022 Batch 126 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2023 Batch 126 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2024 Batch 126 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2025 Batch 126 Clean Stockpile 14 1.80E-01 8.51E-02 <MDA <MDA SR-152-2026 Batch 126 Clean Stockpile 15 2.43E-01 1.02E-01 <MDA <MDA SR-152-2027 Batch 126 Clean Stockpile 16 2.72E-01 1.03E-01 <MDA <MDA SR-152-2028 Batch 127 Clean Stockpile 1 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 57 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2029 Batch 127 Clean Stockpile 2 2.03E-01 9.11E-02 <MDA <MDA SR-152-2030 Batch 127 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2031 Batch 127 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2032 Batch 127 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2033 Batch 127 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2034 Batch 127 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2035 Batch 127 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2036 Batch 127 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2037 Batch 127 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2038 Batch 127 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2039 Batch 127 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2040 Batch 127 Clean Stockpile 13 2.03E-01 9.11E-02 <MDA <MDA SR-152-2041 Batch 127 Clean Stockpile 14 <MDA <MDA <MDA <MDA Batch 127 Clean Stockpile 15 SR-152-2042 QC-I <MDA <MDA <MDA <MDA Batch 127 Clean Stockpile 16 SR-152-2043 QC-R <MDA <MDA <MDA <MDA SR-152-2044 Batch 127 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-2045 Batch 128 Clean Stockpile 1 2.44E-01 9.77E-02 <MDA <MDA SR-152-2046 Batch 128 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2047 Batch 128 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2048 Batch 128 Clean Stockpile 4 3.41E-01 1.21E-01 <MDA <MDA SR-152-2049 Batch 128 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2050 Batch 128 Clean Stockpile 6 2.13E-01 9.33E-02 <MDA <MDA SR-152-2051 Batch 128 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2052 Batch 128 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2053 Batch 128 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2054 Batch 128 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2055 Batch 128 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2056 Batch 128 Clean Stockpile 12 2.25E-01 9.40E-02 <MDA <MDA SR-152-2057 Batch 128 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2058 Batch 128 Clean Stockpile 14 1.59E-01 7.53E-02 <MDA <MDA Batch 128 Clean Stockpile -

15 SR-152-2059 QCI 1.73E-01 8.16E-02 <MDA <MDA Batch 128 Clean Stockpile -

16 SR-152-2059 600 sec 1.63E-01 5.61E-02 <MDA <MDA Batch 128 Clean Stockpile -

17 SR-152-2060 QCR 1.21E-01 5.13E-02 <MDA <MDA SR-152-2061 Batch 129 Clean Stockpile 1 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 58 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2062 Batch 129 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2063 Batch 129 Clean Stockpile 3 1.93E-01 8.43E-02 <MDA <MDA SR-152-2064 Batch 129 Clean Stockpile 4 1.88E-01 8.43E-02 <MDA <MDA SR-152-2065 Batch 129 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2066 Batch 129 Clean Stockpile 6 2.20E-01 9.39E-02 <MDA <MDA SR-152-2067 Batch 129 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2068 Batch 129 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2069 Batch 129 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2070 Batch 129 Clean Stockpile 10 2.47E-01 9.89E-02 <MDA <MDA SR-152-2071 Batch 129 Clean Stockpile 11 2.14E-01 8.94E-02 <MDA <MDA SR-152-2072 Batch 129 Clean Stockpile 12 1.79E-01 8.43E-02 <MDA <MDA SR-152-2073 Batch 129 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2074 Batch 129 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2075 Batch 129 Clean Stockpile 15 2.22E-01 1.05E-01 <MDA <MDA SR-152-2076 Batch 129 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2077 Batch 129 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-2078 Batch 130 Clean Stockpile 1 2.48E-01 9.96E-02 <MDA <MDA SR-152-2079 Batch 130 Clean Stockpile 2 1.82E-01 8.82E-02 <MDA <MDA SR-152-2080 Batch 130 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2081 Batch 130 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2082 Batch 130 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2083 Batch 130 Clean Stockpile 6 1.60E-01 7.75E-02 <MDA <MDA SR-152-2084 Batch 130 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2085 Batch 130 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2086 Batch 130 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2087 Batch 130 Clean Stockpile 10 1.72E-01 7.36E-02 <MDA <MDA SR-152-2088 Batch 130 Clean Stockpile 11 1.70E-01 8.03E-02 <MDA <MDA SR-152-2089 Batch 130 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2090 Batch 130 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2091 Batch 130 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2092 Batch 130 Clean Stockpile 15 2.31E-01 9.89E-02 <MDA <MDA SR-152-2093 Batch 130 Clean Stockpile 16 1.82E-01 6.01E-02 <MDA <MDA SR-152-2094 Batch 131 Clean Stockpile 1 2.03E-01 9.88E-02 <MDA <MDA SR-152-2095 Batch 131 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2096 Batch 131 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2097 Batch 131 Clean Stockpile 4 3.64E-01 1.50E-01 <MDA <MDA SR-152-2098 Batch 131 Clean Stockpile 5 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 59 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2099 Batch 131 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2100 Batch 131 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2101 Batch 131 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2102 Batch 131 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2103 Batch 131 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2104 Batch 131 Clean Stockpile 11 2.01E-01 9.79E-02 <MDA <MDA SR-152-2105 Batch 131 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2106 Batch 131 Clean Stockpile 13 1.91E-01 6.37E-02 <MDA <MDA SR-152-2107 Batch 131 Clean Stockpile 14 2.65E-01 1.04E-01 <MDA <MDA Batch 131 Clean Stockpile-15 SR-152-2108 QCI <MDA <MDA <MDA <MDA Batch 131 Clean Stockpile-16 SR-152-2109 QCR <MDA <MDA <MDA <MDA SR-152-2155 Batch 131 Clean Stockpile 17 2.38E-01 8.09E-02 <MDA <MDA SR-152-2110 Batch 132 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2111 Batch 132 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2112 Batch 132 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2113 Batch 132 Clean Stockpile 4 1.74E-01 7.10E-02 <MDA <MDA SR-152-2114 Batch 132 Clean Stockpile 5 2.90E-01 1.16E-01 <MDA <MDA SR-152-2115 Batch 132 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2116 Batch 132 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2117 Batch 132 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2118 Batch 132 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2119 Batch 132 Clean Stockpile 10 2.06E-01 9.23E-02 <MDA <MDA SR-152-2120 Batch 132 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2121 Batch 132 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2122 Batch 132 Clean Stockpile 13 1.50E-01 7.44E-02 <MDA <MDA SR-152-2123 Batch 132 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2124 Batch 132 Clean Stockpile 15 2.16E-01 9.23E-02 <MDA <MDA SR-152-2125 Batch 132 Clean Stockpile 16 1.97E-01 9.04E-02 <MDA <MDA SR-152-2126 Batch 133 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2127 Batch 133 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2128 Batch 133 Clean Stockpile 3 2.48E-01 1.04E-01 <MDA <MDA SR-152-2129 Batch 133 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2130 Batch 133 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2131 Batch 133 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2132 Batch 133 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2133 Batch 133 Clean Stockpile 8 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 60 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2134 Batch 133 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2135 Batch 133 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2136 Batch 133 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2137 Batch 133 Clean Stockpile 12 2.56E-01 1.09E-01 <MDA <MDA SR-152-2138 Batch 133 Clean Stockpile 13 2.24E-01 1.00E-01 <MDA <MDA SR-152-2139 Batch 133 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2140 Batch 133 Clean Stockpile 15 1.83E-01 8.00E-02 <MDA <MDA SR-152-2141 Batch 133 Clean Stockpile 16 1.69E-01 7.08E-02 <MDA <MDA SR-152-2142 Batch 134 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2143 Batch 134 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2144 Batch 134 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2145 Batch 134 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2146 Batch 134 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2147 Batch 134 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2148 Batch 134 Clean Stockpile 7 2.06E-01 9.24E-02 <MDA <MDA SR-152-2149 Batch 134 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2150 Batch 134 Clean Stockpile 9 2.40E-01 9.62E-02 <MDA <MDA SR-152-2151 Batch 134 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2152 Batch 134 Clean Stockpile 11 1.79E-01 8.69E-02 <MDA <MDA SR-152-2153 Batch 134 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2154 Batch 134 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2156 Batch 134 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2157 Batch 134 Clean Stockpile 15 1.29E-01 5.63E-02 <MDA <MDA SR-152-2158 Batch 134 Clean Stockpile 16 1.81E-01 6.41E-02 <MDA <MDA SR-152-2159 Batch 135 Clean Stockpile 1 2.16E-01 9.57E-02 <MDA <MDA SR-152-2160 Batch 135 Clean Stockpile 2 2.21E-01 9.68E-02 <MDA <MDA SR-152-2161 Batch 135 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2162 Batch 135 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2163 Batch 135 Clean Stockpile 5 2.50E-01 9.81E-02 <MDA <MDA SR-152-2164 Batch 135 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2165 Batch 135 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2166 Batch 135 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2167 Batch 135 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2168 Batch 135 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2169 Batch 135 Clean Stockpile 11 2.24E-01 9.59E-02 <MDA <MDA SR-152-2170 Batch 135 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2171 Batch 135 Clean Stockpile 13 2.34E-01 9.55E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 61 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2172 Batch 135 Clean Stockpile 14 1.84E-01 8.24E-02 <MDA <MDA SR-152-2173 Batch 135 Clean Stockpile 15 1.48E-01 5.11E-02 <MDA <MDA SR-152-2174 Batch 135 Clean Stockpile 16 1.87E-01 5.80E-02 <MDA <MDA SR-152-2175 Batch 136 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2176 Batch 136 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2177 Batch 136 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2178 Batch 136 Clean Stockpile 4 1.53E-01 7.42E-02 <MDA <MDA SR-152-2179 Batch 136 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2180 Batch 136 Clean Stockpile 6 1.98E-01 6.53E-02 <MDA <MDA SR-152-2181 Batch 136 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2182 Batch 136 Clean Stockpile 8 1.47E-01 7.12E-02 <MDA <MDA SR-152-2183 Batch 136 Clean Stockpile 9 2.25E-01 7.41E-02 <MDA <MDA SR-152-2184 Batch 136 Clean Stockpile 10 1.95E-01 8.51E-02 <MDA <MDA SR-152-2185 Batch 136 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2186 Batch 136 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2187 Batch 136 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2188 Batch 136 Clean Stockpile 14 2.30E-01 9.40E-02 <MDA <MDA Batch 136 Clean Stockpile-15 SR-152-2189 QCI <MDA <MDA <MDA <MDA Batch 136 Clean Stockpile-16 SR-152-2190 QCR <MDA <MDA <MDA <MDA SR-152-2191 Batch 136 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-2192 Batch 137 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2193 Batch 137 Clean Stockpile 2 2.06E-01 9.02E-02 <MDA <MDA SR-152-2194 Batch 137 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2195 Batch 137 Clean Stockpile 4 1.91E-01 8.77E-02 <MDA <MDA SR-152-2196 Batch 137 Clean Stockpile 5 2.32E-01 8.31E-02 <MDA <MDA SR-152-2197 Batch 137 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2198 Batch 137 Clean Stockpile 7 2.57E-01 7.30E-02 <MDA <MDA SR-152-2199 Batch 137 Clean Stockpile 8 2.17E-01 9.47E-02 <MDA <MDA SR-152-2200 Batch 137 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2201 Batch 137 Clean Stockpile 10 2.49E-01 9.98E-02 <MDA <MDA SR-152-2202 Batch 137 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2203 Batch 137 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2204 Batch 137 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2205 Batch 137 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2206 Batch 137 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2207 Batch 137 Clean Stockpile 16 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 62 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2208 Batch 138 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2209 Batch 138 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2210 Batch 138 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2211 Batch 138 Clean Stockpile 4 2.71E-01 1.08E-01 <MDA <MDA SR-152-2212 Batch 138 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2213 Batch 138 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2214 Batch 138 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2215 Batch 138 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2216 Batch 138 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2217 Batch 138 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2218 Batch 138 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2219 Batch 138 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2220 Batch 138 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2221 Batch 138 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2222 Batch 138 Clean Stockpile 15 1.25E-01 4.49E-02 <MDA <MDA SR-152-2223 Batch 138 Clean Stockpile 16 1.05E-01 4.12E-02 <MDA <MDA SR-152-2224 Batch 139 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2225 Batch 139 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2226 Batch 139 Clean Stockpile 3 1.77E-01 8.15E-02 <MDA <MDA SR-152-2227 Batch 139 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2228 Batch 139 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2229 Batch 139 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2230 Batch 139 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2231 Batch 139 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2232 Batch 139 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2233 Batch 139 Clean Stockpile 10 2.43E-01 9.93E-02 <MDA <MDA SR-152-2234 Batch 139 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2235 Batch 139 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2236 Batch 139 Clean Stockpile 13 3.60E-01 1.33E-01 <MDA <MDA Batch 139 Clean Stockpile-14 SR-152-2237 QCI 2.13E-01 8.91E-02 <MDA <MDA Batch 139 Clean Stockpile-15 SR-152-2238 QCR 1.92E-01 6.28E-02 <MDA <MDA SR-152-2287 Batch 139 Clean Stockpile 16 1.59E-01 6.47E-02 <MDA <MDA SR-152-2239 Batch 140 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2240 Batch 140 Clean Stockpile 2 2.28E-01 8.40E-02 <MDA <MDA SR-152-2241 Batch 140 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2242 Batch 140 Clean Stockpile 4 2.09E-01 7.10E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 63 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2243 Batch 140 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2244 Batch 140 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2245 Batch 140 Clean Stockpile 7 2.49E-01 9.97E-02 <MDA <MDA SR-152-2246 Batch 140 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2247 Batch 140 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2248 Batch 140 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2249 Batch 140 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2250 Batch 140 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2251 Batch 140 Clean Stockpile 13 5.26E-01 1.25E-01 <MDA <MDA SR-152-2252 Batch 140 Clean Stockpile 14 1.83E-01 6.92E-02 <MDA <MDA SR-152-2253 Batch 140 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2254 Batch 140 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2255 Batch 141 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2256 Batch 141 Clean Stockpile 2 2.20E-01 8.83E-02 <MDA <MDA SR-152-2257 Batch 141 Clean Stockpile 3 2.02E-01 7.17E-02 <MDA <MDA SR-152-2258 Batch 141 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2259 Batch 141 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2260 Batch 141 Clean Stockpile 6 2.92E-01 8.91E-02 <MDA <MDA SR-152-2261 Batch 141 Clean Stockpile 7 4.15E-01 1.33E-01 <MDA <MDA SR-152-2262 Batch 141 Clean Stockpile 8 3.98E-01 1.12E-01 <MDA <MDA SR-152-2263 Batch 141 Clean Stockpile 9 1.69E-01 5.65E-02 <MDA <MDA SR-152-2264 Batch 141 Clean Stockpile 10 2.29E-01 8.11E-02 <MDA <MDA SR-152-2265 Batch 141 Clean Stockpile 11 2.55E-01 8.87E-02 <MDA <MDA SR-152-2266 Batch 141 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2267 Batch 141 Clean Stockpile 13 4.53E-01 1.28E-01 <MDA <MDA SR-152-2268 Batch 141 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2269 Batch 141 Clean Stockpile 15 2.24E-01 9.35E-02 <MDA <MDA SR-152-2270 Batch 141 Clean Stockpile 16 3.07E-01 1.11E-01 <MDA <MDA SR-152-2271 Batch 142 Clean Stockpile 1 3.16E-01 1.33E-01 <MDA <MDA SR-152-2272 Batch 142 Clean Stockpile 2 2.79E-01 7.56E-02 <MDA <MDA SR-152-2273 Batch 142 Clean Stockpile 3 3.01E-01 1.05E-01 <MDA <MDA SR-152-2274 Batch 142 Clean Stockpile 4 3.13E-01 1.11E-01 <MDA <MDA SR-152-2275 Batch 142 Clean Stockpile 5 1.98E-01 6.46E-02 <MDA <MDA SR-152-2276 Batch 142 Clean Stockpile 6 6.64E-01 1.59E-01 <MDA <MDA SR-152-2277 Batch 142 Clean Stockpile 7 3.90E-01 1.27E-01 <MDA <MDA SR-152-2278 Batch 142 Clean Stockpile 8 2.71E-01 7.95E-02 <MDA <MDA SR-152-2279 Batch 142 Clean Stockpile 9 1.92E-01 6.01E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 64 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2280 Batch 142 Clean Stockpile 10 2.34E-01 9.78E-02 <MDA <MDA SR-152-2281 Batch 142 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2282 Batch 142 Clean Stockpile 12 7.51E-01 1.72E-01 <MDA <MDA SR-152-2283 Batch 142 Clean Stockpile 13 2.92E-01 9.54E-02 <MDA <MDA SR-152-2284 Batch 142 Clean Stockpile 14 3.08E-01 9.53E-02 <MDA <MDA SR-152-2285 Batch 142 Clean Stockpile 15 3.75E-01 1.40E-01 <MDA <MDA SR-152-2286 Batch 142 Clean Stockpile 16 4.30E-01 1.30E-01 <MDA <MDA SR-152-2288 Batch 143 Clean Stockpile 1 2.87E-01 1.09E-01 <MDA <MDA SR-152-2289 Batch 143 Clean Stockpile 2 3.10E-01 1.12E-01 <MDA <MDA SR-152-2290 Batch 143 Clean Stockpile 3 2.26E-01 9.87E-02 <MDA <MDA SR-152-2291 Batch 143 Clean Stockpile 4 2.25E-01 9.40E-02 <MDA <MDA SR-152-2292 Batch 143 Clean Stockpile 5 2.54E-01 1.06E-01 <MDA <MDA SR-152-2293 Batch 143 Clean Stockpile 6 3.43E-01 1.20E-01 <MDA <MDA SR-152-2294 Batch 143 Clean Stockpile 7 3.53E-01 1.23E-01 <MDA <MDA SR-152-2295 Batch 143 Clean Stockpile 8 2.13E-01 8.22E-02 <MDA <MDA SR-152-2296 Batch 143 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2297 Batch 143 Clean Stockpile 10 3.93E-01 1.52E-01 <MDA <MDA SR-152-2298 Batch 143 Clean Stockpile 11 2.21E-01 9.25E-02 <MDA <MDA SR-152-2299 Batch 143 Clean Stockpile 12 2.72E-01 7.29E-02 <MDA <MDA SR-152-2300 Batch 143 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2301 Batch 143 Clean Stockpile 14 2.09E-01 6.06E-02 <MDA <MDA SR-152-2302 Batch 143 Clean Stockpile 15 2.35E-01 1.00E-01 <MDA <MDA SR-152-2303 Batch 143 Clean Stockpile 16 2.32E-01 9.91E-02 <MDA <MDA SR-152-2304 Batch 144 Clean Stockpile 1 3.09E-01 1.03E-01 <MDA <MDA SR-152-2305 Batch 144 Clean Stockpile 2 3.32E-01 1.20E-01 <MDA <MDA SR-152-2306 Batch 144 Clean Stockpile 3 2.66E-01 7.35E-02 <MDA <MDA SR-152-2307 Batch 144 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2308 Batch 144 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2309 Batch 144 Clean Stockpile 6 3.51E-01 8.38E-02 <MDA <MDA SR-152-2310 Batch 144 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2311 Batch 144 Clean Stockpile 8 1.71E-01 4.76E-02 <MDA <MDA SR-152-2312 Batch 144 Clean Stockpile 9 2.50E-01 7.48E-02 <MDA <MDA SR-152-2313 Batch 144 Clean Stockpile 10 4.67E-01 1.40E-01 <MDA <MDA SR-152-2314 Batch 144 Clean Stockpile 11 2.59E-01 7.15E-02 <MDA <MDA SR-152-2315 Batch 144 Clean Stockpile 12 3.14E-01 1.15E-01 <MDA <MDA SR-152-2316 Batch 144 Clean Stockpile 13 3.08E-01 1.18E-01 <MDA <MDA SR-152-2317 Batch 144 Clean Stockpile 14 4.30E-01 1.07E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 65 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2318 Batch 144 Clean Stockpile 15 4.18E-01 1.53E-01 <MDA <MDA SR-152-2319 Batch 144 Clean Stockpile 16 3.56E-01 1.24E-01 <MDA <MDA SR-152-2320 Batch 145 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2321 Batch 145 Clean Stockpile 2 2.05E-01 8.76E-02 <MDA <MDA SR-152-2322 Batch 145 Clean Stockpile 3 3.82E-01 7.60E-02 <MDA <MDA SR-152-2323 Batch 145 Clean Stockpile 4 4.70E-01 9.42E-02 <MDA <MDA SR-152-2324 Batch 145 Clean Stockpile 5 3.76E-01 1.22E-01 <MDA <MDA SR-152-2325 Batch 145 Clean Stockpile 6 4.29E-01 1.24E-01 <MDA <MDA SR-152-2326 Batch 145 Clean Stockpile 7 3.63E-01 1.17E-01 <MDA <MDA SR-152-2327 Batch 145 Clean Stockpile 8 2.35E-01 7.51E-02 <MDA <MDA SR-152-2328 Batch 145 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2329 Batch 145 Clean Stockpile 10 1.79E-01 7.00E-02 <MDA <MDA SR-152-2330 Batch 145 Clean Stockpile 11 3.28E-01 1.25E-01 <MDA <MDA SR-152-2331 Batch 145 Clean Stockpile 12 3.37E-01 9.28E-02 <MDA <MDA SR-152-2332 Batch 145 Clean Stockpile 13 2.50E-01 7.57E-02 <MDA <MDA SR-152-2333 Batch 145 Clean Stockpile 14 2.67E-01 1.07E-01 <MDA <MDA SR-152-2334 Batch 145 Clean Stockpile 15 3.04E-01 1.11E-01 <MDA <MDA SR-152-2335 Batch 145 Clean Stockpile 16 4.09E-01 1.52E-01 <MDA <MDA SR-152-2336 Batch 146 Clean Stockpile 1 2.49E-01 1.06E-01 <MDA <MDA SR-152-2337 Batch 146 Clean Stockpile 2 4.14E-01 1.57E-01 <MDA <MDA SR-152-2338 Batch 146 Clean Stockpile 3 2.60E-01 6.90E-02 <MDA <MDA SR-152-2339 Batch 146 Clean Stockpile 4 3.51E-01 1.19E-01 <MDA <MDA SR-152-2340 Batch 146 Clean Stockpile 5 3.15E-01 1.17E-01 <MDA <MDA SR-152-2341 Batch 146 Clean Stockpile 6 3.38E-01 8.43E-02 <MDA <MDA SR-152-2342 Batch 146 Clean Stockpile 7 2.90E-01 1.14E-01 <MDA <MDA SR-152-2343 Batch 146 Clean Stockpile 8 4.89E-01 1.53E-01 <MDA <MDA SR-152-2344 Batch 146 Clean Stockpile 9 2.69E-01 1.03E-01 <MDA <MDA SR-152-2345 Batch 146 Clean Stockpile 10 2.27E-01 9.68E-02 <MDA <MDA SR-152-2346 Batch 146 Clean Stockpile 11 3.45E-01 1.22E-01 <MDA <MDA SR-152-2347 Batch 146 Clean Stockpile 12 3.03E-01 1.31E-01 <MDA <MDA SR-152-2348 Batch 146 Clean Stockpile 13 2.75E-01 1.12E-01 <MDA <MDA SR-152-2349 Batch 146 Clean Stockpile 14 2.81E-01 1.10E-01 <MDA <MDA SR-152-2350 Batch 146 Clean Stockpile 15 4.09E-01 9.20E-02 <MDA <MDA SR-152-2351 Batch 146 Clean Stockpile 16 3.49E-01 1.20E-01 <MDA <MDA SR-152-2352 Batch 147 Clean Stockpile 1 3.45E-01 1.26E-01 <MDA <MDA SR-152-2353 Batch 147 Clean Stockpile 2 3.10E-01 1.20E-01 <MDA <MDA SR-152-2354 Batch 147 Clean Stockpile 3 3.33E-01 1.16E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 66 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2355 Batch 147 Clean Stockpile 4 2.84E-01 7.92E-02 <MDA <MDA SR-152-2356 Batch 147 Clean Stockpile 5 3.03E-01 1.09E-01 <MDA <MDA SR-152-2357 Batch 147 Clean Stockpile 6 3.68E-01 9.29E-02 <MDA <MDA SR-152-2358 Batch 147 Clean Stockpile 7 5.82E-01 1.62E-01 <MDA <MDA SR-152-2359 Batch 147 Clean Stockpile 8 4.45E-01 1.43E-01 <MDA <MDA SR-152-2360 Batch 147 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2361 Batch 147 Clean Stockpile 10 4.24E-01 1.35E-01 <MDA <MDA SR-152-2362 Batch 147 Clean Stockpile 11 2.91E-01 7.08E-02 <MDA <MDA SR-152-2363 Batch 147 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2364 Batch 147 Clean Stockpile 13 2.97E-01 7.12E-02 <MDA <MDA SR-152-2365 Batch 147 Clean Stockpile 14 2.34E-01 9.79E-02 <MDA <MDA SR-152-2366 Batch 147 Clean Stockpile 15 4.63E-01 1.40E-01 <MDA <MDA SR-152-2367 Batch 147 Clean Stockpile 16 2.59E-01 1.02E-01 <MDA <MDA SR-152-2368 Batch 148 Clean Stockpile 1 2.04E-01 8.92E-02 <MDA <MDA SR-152-2369 Batch 148 Clean Stockpile 2 2.51E-01 6.94E-02 <MDA <MDA SR-152-2370 Batch 148 Clean Stockpile 3 3.16E-01 9.07E-02 <MDA <MDA SR-152-2371 Batch 148 Clean Stockpile 4 3.19E-01 8.14E-02 <MDA <MDA SR-152-2372 Batch 148 Clean Stockpile 5 3.77E-01 1.30E-01 <MDA <MDA SR-152-2373 Batch 148 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2374 Batch 148 Clean Stockpile 7 3.00E-01 1.14E-01 <MDA <MDA SR-152-2375 Batch 148 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2376 Batch 148 Clean Stockpile 9 3.26E-01 6.71E-02 <MDA <MDA SR-152-2377 Batch 148 Clean Stockpile 10 4.48E-01 1.41E-01 <MDA <MDA SR-152-2378 Batch 148 Clean Stockpile 11 3.96E-01 1.27E-01 <MDA <MDA SR-152-2379 Batch 148 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2380 Batch 148 Clean Stockpile 13 2.12E-01 6.57E-02 <MDA <MDA SR-152-2381 Batch 148 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2382 Batch 148 Clean Stockpile 15 3.06E-01 7.93E-02 <MDA <MDA SR-152-2383 Batch 148 Clean Stockpile 16 4.17E-01 1.28E-01 <MDA <MDA SR-152-2384 Batch 149 Clean Stockpile 1 4.25E-01 1.29E-01 <MDA <MDA SR-152-2385 Batch 149 Clean Stockpile 2 3.53E-01 1.15E-01 <MDA <MDA SR-152-2386 Batch 149 Clean Stockpile 3 2.51E-01 9.87E-02 <MDA <MDA SR-152-2387 Batch 149 Clean Stockpile 4 3.23E-01 7.34E-02 <MDA <MDA SR-152-2388 Batch 149 Clean Stockpile 5 2.15E-01 6.49E-02 <MDA <MDA SR-152-2389 Batch 149 Clean Stockpile 6 3.86E-01 1.23E-01 <MDA <MDA SR-152-2390 Batch 149 Clean Stockpile 7 2.21E-01 9.06E-02 <MDA <MDA SR-152-2391 Batch 149 Clean Stockpile 8 5.53E-01 1.53E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 67 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2392 Batch 149 Clean Stockpile 9 2.74E-01 1.04E-01 <MDA <MDA SR-152-2393 Batch 149 Clean Stockpile 10 2.92E-01 1.09E-01 <MDA <MDA SR-152-2394 Batch 149 Clean Stockpile 11 3.17E-01 1.09E-01 <MDA <MDA SR-152-2395 Batch 149 Clean Stockpile 12 3.39E-01 1.43E-01 <MDA <MDA SR-152-2396 Batch 149 Clean Stockpile 13 3.51E-01 1.17E-01 <MDA <MDA SR-152-2397 Batch 149 Clean Stockpile 14 2.27E-01 9.60E-02 <MDA <MDA SR-152-2398 Batch 149 Clean Stockpile 15 3.45E-01 8.89E-02 <MDA <MDA SR-152-2399 Batch 149 Clean Stockpile 16 3.59E-01 1.18E-01 <MDA <MDA SR-152-2400 Batch 150 Clean Stockpile 1 2.83E-01 1.13E-01 <MDA <MDA SR-152-2401 Batch 150 Clean Stockpile 2 3.57E-01 1.23E-01 <MDA <MDA SR-152-2402 Batch 150 Clean Stockpile 3 4.01E-01 1.09E-01 <MDA <MDA SR-152-2403 Batch 150 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2404 Batch 150 Clean Stockpile 5 3.01E-01 1.14E-01 <MDA <MDA SR-152-2405 Batch 150 Clean Stockpile 6 3.41E-01 1.46E-01 <MDA <MDA SR-152-2406 Batch 150 Clean Stockpile 7 3.17E-01 1.18E-01 <MDA <MDA SR-152-2407 Batch 150 Clean Stockpile 8 3.27E-01 8.26E-02 <MDA <MDA SR-152-2408 Batch 150 Clean Stockpile 9 3.13E-01 1.11E-01 <MDA <MDA SR-152-2409 Batch 150 Clean Stockpile 10 2.58E-01 6.83E-02 <MDA <MDA SR-152-2410 Batch 150 Clean Stockpile 11 2.63E-01 8.62E-02 <MDA <MDA SR-152-2411 Batch 150 Clean Stockpile 12 2.15E-01 8.97E-02 <MDA <MDA SR-152-2412 Batch 150 Clean Stockpile 13 2.62E-01 7.23E-02 <MDA <MDA SR-152-2413 Batch 150 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2414 Batch 150 Clean Stockpile 15 2.26E-01 9.86E-02 <MDA <MDA SR-152-2415 Batch 150 Clean Stockpile 16 4.08E-01 1.38E-01 <MDA <MDA SR-152-2416 Batch 151 Clean Stockpile 1 2.92E-01 9.12E-02 <MDA <MDA SR-152-2417 Batch 151 Clean Stockpile 2 4.94E-01 1.53E-01 <MDA <MDA SR-152-2418 Batch 151 Clean Stockpile 3 3.24E-01 1.07E-01 <MDA <MDA SR-152-2419 Batch 151 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2420 Batch 151 Clean Stockpile 5 3.36E-01 9.12E-02 <MDA <MDA SR-152-2421 Batch 151 Clean Stockpile 6 3.55E-01 1.28E-01 <MDA <MDA SR-152-2422 Batch 151 Clean Stockpile 7 3.46E-01 8.43E-02 <MDA <MDA SR-152-2423 Batch 151 Clean Stockpile 8 3.30E-01 6.93E-02 <MDA <MDA SR-152-2424 Batch 151 Clean Stockpile 9 2.91E-01 5.92E-02 <MDA <MDA SR-152-2425 Batch 151 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2426 Batch 151 Clean Stockpile 11 3.08E-01 1.13E-01 <MDA <MDA SR-152-2427 Batch 151 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2428 Batch 151 Clean Stockpile 13 2.62E-01 1.09E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 68 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2429 Batch 151 Clean Stockpile 14 3.19E-01 1.19E-01 <MDA <MDA SR-152-2430 Batch 151 Clean Stockpile 15 3.88E-01 9.33E-02 <MDA <MDA SR-152-2431 Batch 151 Clean Stockpile 16 8.43E-01 1.50E-01 <MDA <MDA SR-152-2432 Batch 152 Clean Stockpile 1 2.11E-01 8.03E-02 <MDA <MDA SR-152-2433 Batch 152 Clean Stockpile 2 2.86E-01 8.08E-02 <MDA <MDA SR-152-2434 Batch 152 Clean Stockpile 3 3.25E-01 8.94E-02 <MDA <MDA SR-152-2435 Batch 152 Clean Stockpile 4 2.20E-01 9.62E-02 <MDA <MDA SR-152-2436 Batch 152 Clean Stockpile 5 2.60E-01 1.04E-01 <MDA <MDA SR-152-2437 Batch 152 Clean Stockpile 6 3.04E-01 7.26E-02 <MDA <MDA SR-152-2438 Batch 152 Clean Stockpile 7 3.18E-01 1.08E-01 <MDA <MDA SR-152-2439 Batch 152 Clean Stockpile 8 2.76E-01 9.95E-02 <MDA <MDA SR-152-2440 Batch 152 Clean Stockpile 9 2.60E-01 1.02E-01 <MDA <MDA SR-152-2441 Batch 152 Clean Stockpile 10 2.46E-01 7.50E-02 <MDA <MDA SR-152-2442 Batch 152 Clean Stockpile 11 2.62E-01 1.01E-01 <MDA <MDA SR-152-2443 Batch 152 Clean Stockpile 12 2.50E-01 9.49E-02 <MDA <MDA SR-152-2444 Batch 152 Clean Stockpile 13 2.16E-01 9.23E-02 <MDA <MDA SR-152-2445 Batch 152 Clean Stockpile 14 2.61E-01 1.01E-01 <MDA <MDA SR-152-2446 Batch 152 Clean Stockpile 15 3.07E-01 1.25E-01 <MDA <MDA SR-152-2447 Batch 152 Clean Stockpile 16 3.03E-01 8.79E-02 <MDA <MDA SR-152-2448 Batch 153 Clean Stockpile 1 2.27E-01 9.94E-02 <MDA <MDA SR-152-2449 Batch 153 Clean Stockpile 2 2.45E-01 1.02E-01 <MDA <MDA SR-152-2450 Batch 153 Clean Stockpile 3 2.67E-01 7.83E-02 <MDA <MDA SR-152-2451 Batch 153 Clean Stockpile 4 2.66E-01 7.33E-02 <MDA <MDA SR-152-2452 Batch 153 Clean Stockpile 5 2.52E-01 7.56E-02 <MDA <MDA SR-152-2453 Batch 153 Clean Stockpile 6 2.77E-01 1.07E-01 <MDA <MDA SR-152-2454 Batch 153 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2455 Batch 153 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2456 Batch 153 Clean Stockpile 9 2.35E-01 8.11E-02 <MDA <MDA SR-152-2457 Batch 153 Clean Stockpile 10 2.76E-01 1.11E-01 <MDA <MDA SR-152-2458 Batch 153 Clean Stockpile 11 2.84E-01 1.12E-01 <MDA <MDA SR-152-2459 Batch 153 Clean Stockpile 12 2.72E-01 7.77E-02 <MDA <MDA SR-152-2460 Batch 153 Clean Stockpile 13 2.76E-01 1.06E-01 <MDA <MDA SR-152-2461 Batch 153 Clean Stockpile 14 2.15E-01 8.99E-02 <MDA <MDA SR-152-2462 Batch 153 Clean Stockpile 15 1.98E-01 8.86E-02 <MDA <MDA SR-152-2463 Batch 153 Clean Stockpile 16 3.10E-01 1.14E-01 <MDA <MDA SR-152-2464 Batch 154 Clean Stockpile 1 3.06E-01 1.07E-01 <MDA <MDA SR-152-2465 Batch 154 Clean Stockpile 2 2.29E-01 6.57E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 69 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2466 Batch 154 Clean Stockpile 3 2.74E-01 1.00E-01 <MDA <MDA SR-152-2467 Batch 154 Clean Stockpile 4 2.46E-01 8.06E-02 <MDA <MDA SR-152-2468 Batch 154 Clean Stockpile 5 2.95E-01 1.10E-01 <MDA <MDA SR-152-2469 Batch 154 Clean Stockpile 6 1.97E-01 6.72E-02 <MDA <MDA SR-152-2470 Batch 154 Clean Stockpile 7 2.62E-01 1.03E-01 <MDA <MDA SR-152-2471 Batch 154 Clean Stockpile 8 2.37E-01 1.01E-01 <MDA <MDA SR-152-2472 Batch 154 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2473 Batch 154 Clean Stockpile 10 1.99E-01 6.55E-02 <MDA <MDA SR-152-2474 Batch 154 Clean Stockpile 11 1.99E-01 7.03E-02 <MDA <MDA SR-152-2475 Batch 154 Clean Stockpile 12 2.60E-01 1.02E-01 <MDA <MDA SR-152-2476 Batch 154 Clean Stockpile 13 2.79E-01 1.08E-01 <MDA <MDA SR-152-2477 Batch 154 Clean Stockpile 14 3.08E-01 1.19E-01 <MDA <MDA SR-152-2478 Batch 154 Clean Stockpile 15 2.04E-01 7.71E-02 <MDA <MDA SR-152-2479 Batch 154 Clean Stockpile 16 1.83E-01 6.25E-02 <MDA <MDA SR-152-2480 Batch 155 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2481 Batch 155 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2482 Batch 155 Clean Stockpile 3 2.66E-01 1.09E-01 <MDA <MDA SR-152-2483 Batch 155 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2484 Batch 155 Clean Stockpile 5 2.62E-01 1.05E-01 <MDA <MDA SR-152-2485 Batch 155 Clean Stockpile 6 2.19E-01 8.95E-02 <MDA <MDA SR-152-2486 Batch 155 Clean Stockpile 7 2.25E-01 7.58E-02 <MDA <MDA SR-152-2487 Batch 155 Clean Stockpile 8 1.77E-01 5.85E-02 <MDA <MDA SR-152-2488 Batch 155 Clean Stockpile 9 1.52E-01 6.35E-02 <MDA <MDA SR-152-2489 Batch 155 Clean Stockpile 10 2.82E-01 1.09E-01 <MDA <MDA SR-152-2490 Batch 155 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2491 Batch 155 Clean Stockpile 12 2.75E-01 1.06E-01 <MDA <MDA SR-152-2492 Batch 155 Clean Stockpile 13 1.44E-01 4.78E-02 <MDA <MDA SR-152-2493 Batch 155 Clean Stockpile 14 1.87E-01 6.17E-02 <MDA <MDA SR-152-2494 Batch 155 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2495 Batch 155 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2496 Batch 156 Clean Stockpile 1 3.36E-01 1.19E-01 <MDA <MDA SR-152-2497 Batch 156 Clean Stockpile 2 1.35E-01 5.65E-02 <MDA <MDA SR-152-2498 Batch 156 Clean Stockpile 3 2.12E-01 9.08E-02 <MDA <MDA SR-152-2499 Batch 156 Clean Stockpile 4 1.62E-01 5.37E-02 <MDA <MDA SR-152-2500 Batch 156 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2501 Batch 156 Clean Stockpile 6 1.65E-01 7.44E-02 <MDA <MDA SR-152-2502 Batch 156 Clean Stockpile 7 1.95E-01 8.51E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 70 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2503 Batch 156 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2504 Batch 156 Clean Stockpile 9 2.04E-01 6.04E-02 <MDA <MDA SR-152-2505 Batch 156 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2506 Batch 156 Clean Stockpile 11 1.58E-01 5.14E-02 <MDA <MDA SR-152-2507 Batch 156 Clean Stockpile 12 2.37E-01 1.07E-01 <MDA <MDA SR-152-2508 Batch 156 Clean Stockpile 13 2.31E-01 6.45E-02 <MDA <MDA SR-152-2509 Batch 156 Clean Stockpile 14 <MDA <MDA <MDA <MDA Batch 156 Clean Stockpile 15 SR-152-2510 QCI 1.11E-01 4.74E-02 <MDA <MDA Batch 156 Clean Stockpile 16 SR-152-2511 QCR 1.48E-01 6.03E-02 <MDA <MDA SR-152-2518 Batch 156 Clean Stockpile 17 2.62E-01 1.05E-01 <MDA <MDA SR-152-2512 Batch 157 Clean Stockpile 1 1.58E-01 5.42E-02 <MDA <MDA SR-152-2513 Batch 157 Clean Stockpile 2 1.80E-01 6.71E-02 <MDA <MDA SR-152-2514 Batch 157 Clean Stockpile 3 2.12E-01 7.32E-02 <MDA <MDA SR-152-2515 Batch 157 Clean Stockpile 4 2.00E-01 5.14E-02 <MDA <MDA SR-152-2516 Batch 157 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2517 Batch 157 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2519 Batch 157 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2520 Batch 157 Clean Stockpile 8 2.10E-01 9.42E-02 <MDA <MDA SR-152-2521 Batch 157 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2522 Batch 157 Clean Stockpile 10 2.52E-01 9.55E-02 <MDA <MDA SR-152-2523 Batch 157 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2524 Batch 157 Clean Stockpile 12 2.56E-01 1.03E-01 <MDA <MDA SR-152-2525 Batch 157 Clean Stockpile 13 1.25E-01 5.04E-02 <MDA <MDA SR-152-2526 Batch 157 Clean Stockpile 14 2.22E-01 9.29E-02 <MDA <MDA SR-152-2527 Batch 157 Clean Stockpile 15 2.24E-01 9.34E-02 <MDA <MDA SR-152-2528 Batch 157 Clean Stockpile 16 2.40E-01 1.00E-01 <MDA <MDA SR-152-2529 Batch 158 Clean Stockpile 1 3.29E-01 1.22E-01 <MDA <MDA SR-152-2530 Batch 158 Clean Stockpile 2 2.99E-01 9.34E-02 <MDA <MDA SR-152-2531 Batch 158 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2532 Batch 158 Clean Stockpile 4 2.13E-01 6.44E-02 <MDA <MDA SR-152-2533 Batch 158 Clean Stockpile 5 2.55E-01 1.11E-01 <MDA <MDA SR-152-2534 Batch 158 Clean Stockpile 6 2.87E-01 7.69E-02 <MDA <MDA SR-152-2535 Batch 158 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2536 Batch 158 Clean Stockpile 8 2.19E-01 6.18E-02 <MDA <MDA SR-152-2537 Batch 158 Clean Stockpile 9 2.24E-01 5.68E-02 <MDA <MDA SR-152-2538 Batch 158 Clean Stockpile 10 2.27E-01 9.48E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 71 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2539 Batch 158 Clean Stockpile 11 1.63E-01 5.77E-02 <MDA <MDA SR-152-2540 Batch 158 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2541 Batch 158 Clean Stockpile 13 1.61E-01 6.80E-02 <MDA <MDA SR-152-2542 Batch 158 Clean Stockpile 14 1.84E-01 6.06E-02 <MDA <MDA Batch 158 Clean Stockpile 15 SR-152-2543 QCI 1.95E-01 8.32E-02 <MDA <MDA Batch 158 Clean Stockpile 16 SR-152-2544 QCR 1.81E-01 5.60E+03 <MDA <MDA SR-152-2585 Batch 158 Clean Stockpile 17 2.02E-01 4.70E-02 <MDA <MDA SR-152-2586 Batch 158 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2545 Batch 159 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2546 Batch 159 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2547 Batch 159 Clean Stockpile 4 2.23E-01 9.51E-02 <MDA <MDA SR-152-2548 Batch 159 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2549 Batch 159 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2550 Batch 159 Clean Stockpile 7 1.74E-01 6.40E-02 <MDA <MDA SR-152-2551 Batch 159 Clean Stockpile 8 1.98E-01 5.46E-02 <MDA <MDA SR-152-2552 Batch 159 Clean Stockpile 9 1.57E-01 6.12E-02 <MDA <MDA SR-152-2553 Batch 159 Clean Stockpile 10 2.19E-01 7.11E-02 <MDA <MDA SR-152-2554 Batch 159 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2555 Batch 159 Clean Stockpile 12 1.38E-01 6.08E-02 <MDA <MDA SR-152-2556 Batch 159 Clean Stockpile 13 2.06E-01 6.37E-02 <MDA <MDA SR-152-2557 Batch 159 Clean Stockpile 14 1.88E-01 7.47E-02 <MDA <MDA SR-152-2558 Batch 159 Clean Stockpile 15 1.65E-01 5.60E-02 <MDA <MDA SR-152-2559 Batch 159 Clean Stockpile 16 1.53E-01 5.55E-02 <MDA <MDA SR-152-2560 Batch 159 Clean Stockpile 17 1.81E-01 8.11E-02 <MDA <MDA SR-152-2561 Batch 160 Clean Stockpile 1 1.43E-01 5.79E-02 <MDA <MDA SR-152-2562 Batch 160 Clean Stockpile 2 1.45E-01 6.01E-02 <MDA <MDA SR-152-2563 Batch 160 Clean Stockpile 3 2.18E-01 6.32E-02 <MDA <MDA SR-152-2564 Batch 160 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2565 Batch 160 Clean Stockpile 5 3.06E-01 1.05E-01 <MDA <MDA SR-152-2566 Batch 160 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2567 Batch 160 Clean Stockpile 7 2.26E-01 9.04E-02 <MDA <MDA SR-152-2568 Batch 160 Clean Stockpile 8 1.77E-01 6.36E-02 <MDA <MDA SR-152-2569 Batch 160 Clean Stockpile 9 2.77E-01 9.97E-02 <MDA <MDA SR-152-2570 Batch 160 Clean Stockpile 10 1.94E-01 8.48E-02 <MDA <MDA SR-152-2571 Batch 160 Clean Stockpile 11 2.04E-01 8.73E-02 <MDA <MDA SR-152-2572 Batch 160 Clean Stockpile 12 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 72 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2573 Batch 160 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2574 Batch 160 Clean Stockpile 14 2.09E-01 5.63E-02 <MDA <MDA SR-152-2575 Batch 160 Clean Stockpile 15 1.89E-01 8.28E-02 <MDA <MDA SR-152-2576 Batch 160 Clean Stockpile 16 2.33E-01 7.93E-02 <MDA <MDA SR-152-2577 Batch 161 Clean Stockpile 1 1.59E-01 6.58E-02 <MDA <MDA SR-152-2578 Batch 161 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2579 Batch 161 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2580 Batch 161 Clean Stockpile 4 1.95E-01 8.75E-02 <MDA <MDA SR-152-2581 Batch 161 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2582 Batch 161 Clean Stockpile 6 1.71E-01 6.75E-02 <MDA <MDA SR-152-2583 Batch 161 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2584 Batch 161 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2587 Batch 161 Clean Stockpile 9 1.32E-01 4.92E-02 <MDA <MDA SR-152-2588 Batch 161 Clean Stockpile 10 2.98E-01 1.11E-01 <MDA <MDA SR-152-2589 Batch 161 Clean Stockpile 11 2.21E-01 5.27E-02 <MDA <MDA SR-152-2590 Batch 161 Clean Stockpile 12 1.71E-01 5.96E-02 <MDA <MDA SR-152-2591 Batch 161 Clean Stockpile 13 2.32E-01 9.32E-02 <MDA <MDA SR-152-2592 Batch 161 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2593 Batch 161 Clean Stockpile 15 1.81E-01 7.08E-02 <MDA <MDA SR-152-2594 Batch 161 Clean Stockpile 16 2.47E-01 6.80E-02 <MDA <MDA SR-152-2595 Batch 162 Clean Stockpile 1 2.45E-01 8.01E-02 <MDA <MDA SR-152-2596 Batch 162 Clean Stockpile 2 2.17E-01 9.48E-02 <MDA <MDA SR-152-2597 Batch 162 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2598 Batch 162 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2599 Batch 162 Clean Stockpile 5 1.99E-01 5.55E-02 <MDA <MDA SR-152-2600 Batch 162 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2601 Batch 162 Clean Stockpile 7 1.52E-01 6.78E-02 <MDA <MDA SR-152-2602 Batch 162 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2603 Batch 162 Clean Stockpile 9 1.96E-01 8.18E-02 <MDA <MDA SR-152-2604 Batch 162 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2605 Batch 162 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2606 Batch 162 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2607 Batch 162 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2608 Batch 162 Clean Stockpile 14 1.55E-01 5.42E-02 <MDA <MDA SR-152-2609 Batch 162 Clean Stockpile 15 1.43E-01 3.98E-02 <MDA <MDA SR-152-2610 Batch 162 Clean Stockpile 16 1.64E-01 4.74E-02 <MDA <MDA SR-152-2611 Batch 163 Clean Stockpile 1 2.09E-01 6.81E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 73 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2612 Batch 163 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2613 Batch 163 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2614 Batch 163 Clean Stockpile 4 1.77E-01 6.12E-02 <MDA <MDA SR-152-2615 Batch 163 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2616 Batch 163 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2617 Batch 163 Clean Stockpile 7 1.88E-01 7.22E-02 <MDA <MDA SR-152-2618 Batch 163 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2619 Batch 163 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2620 Batch 163 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2621 Batch 163 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2622 Batch 163 Clean Stockpile 12 1.46E-01 6.26E-02 <MDA <MDA SR-152-2623 Batch 163 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2624 Batch 163 Clean Stockpile 14 1.66E-01 6.29E-02 <MDA <MDA SR-152-2625 Batch 163 Clean Stockpile 15 1.71E-01 5.24E-02 <MDA <MDA SR-152-2626 Batch 163 Clean Stockpile 16 1.52E-01 4.54E-02 <MDA <MDA SR-152-2627 Batch 164 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2628 Batch 164 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2629 Batch 164 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2630 Batch 164 Clean Stockpile 4 1.29E-01 4.88E-02 <MDA <MDA SR-152-2631 Batch 164 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2632 Batch 164 Clean Stockpile 6 1.82E-01 7.06E-02 <MDA <MDA SR-152-2633 Batch 164 Clean Stockpile 7 1.80E-01 5.71E-02 <MDA <MDA SR-152-2634 Batch 164 Clean Stockpile 8 2.18E-01 6.59E-02 <MDA <MDA SR-152-2635 Batch 164 Clean Stockpile 9 2.34E-01 9.19E-02 <MDA <MDA SR-152-2636 Batch 164 Clean Stockpile 10 2.17E-01 7.79E-02 <MDA <MDA SR-152-2637 Batch 164 Clean Stockpile 11 2.15E-01 6.83E-02 <MDA <MDA SR-152-2638 Batch 164 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2639 Batch 164 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2640 Batch 164 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2641 Batch 164 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2642 Batch 164 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2643 Batch 165 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2644 Batch 165 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2645 Batch 165 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2646 Batch 165 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2647 Batch 165 Clean Stockpile 5 2.49E-01 9.61E-02 <MDA <MDA SR-152-2648 Batch 165 Clean Stockpile 6 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 74 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2649 Batch 165 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2650 Batch 165 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2651 Batch 165 Clean Stockpile 9 1.65E-01 5.99E-02 <MDA <MDA SR-152-2652 Batch 165 Clean Stockpile 10 1.76E-01 6.99E-02 <MDA <MDA SR-152-2653 Batch 165 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2654 Batch 165 Clean Stockpile 12 2.48E-01 1.04E-01 <MDA <MDA SR-152-2655 Batch 165 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2656 Batch 165 Clean Stockpile 14 <MDA <MDA <MDA <MDA Batch 165 Clean Stockpile 15 SR-152-2657 QCI 1.58E-01 6.67E-02 <MDA <MDA Batch 165 Clean Stockpile 16 SR-152-2658 QCR 1.44E-01 5.53E-02 <MDA <MDA SR-152-2697 Batch 165 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-2659 Batch 166 Clean Stockpile 1 2.75E-01 1.02E-01 <MDA <MDA SR-152-2660 Batch 166 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2661 Batch 166 Clean Stockpile 3 1.86E-01 6.13E-02 <MDA <MDA SR-152-2662 Batch 166 Clean Stockpile 4 1.92E-01 6.18E-02 <MDA <MDA SR-152-2663 Batch 166 Clean Stockpile 5 2.07E-01 8.34E-02 <MDA <MDA SR-152-2664 Batch 166 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2665 Batch 166 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2666 Batch 166 Clean Stockpile 8 2.81E-01 1.13E-01 <MDA <MDA SR-152-2667 Batch 166 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2668 Batch 166 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2669 Batch 166 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2670 Batch 166 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2671 Batch 166 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2672 Batch 166 Clean Stockpile 14 2.03E-01 8.79E-02 <MDA <MDA Batch 166 Clean Stockpile 15 SR-152-2673 QCI 1.49E-01 5.69E-02 <MDA <MDA Batch 166 Clean Stockpile 16 SR-152-2674 QCR 1.91E-01 6.28E-02 <MDA <MDA SR-152-2698 Batch 166 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-2675 Batch 167 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2676 Batch 167 Clean Stockpile 2 1.99E-01 8.93E-02 <MDA <MDA SR-152-2677 Batch 167 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2678 Batch 167 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2679 Batch 167 Clean Stockpile 5 1.98E-01 8.87E-02 <MDA <MDA SR-152-2680 Batch 167 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2681 Batch 167 Clean Stockpile 7 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 75 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2682 Batch 167 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2683 Batch 167 Clean Stockpile 9 1.77E-01 6.10E-02 <MDA <MDA SR-152-2684 Batch 167 Clean Stockpile 10 1.90E-01 7.40E-02 <MDA <MDA SR-152-2685 Batch 167 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2686 Batch 167 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2687 Batch 167 Clean Stockpile 13 1.60E-01 6.85E-02 <MDA <MDA SR-152-2688 Batch 167 Clean Stockpile 14 1.84E-01 8.46E-02 <MDA <MDA SR-152-2689 Batch 167 Clean Stockpile 15 1.36E-01 5.99E-02 <MDA <MDA SR-152-2690 Batch 167 Clean Stockpile 16 1.51E-01 5.81E-02 <MDA <MDA SR-152-2691 Batch 168 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2692 Batch 168 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2693 Batch 168 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2694 Batch 168 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2695 Batch 168 Clean Stockpile 5 1.56E-01 4.55E-02 <MDA <MDA SR-152-2696 Batch 168 Clean Stockpile 6 1.98E-01 8.91E-02 <MDA <MDA SR-152-2699 Batch 168 Clean Stockpile 7 2.62E-01 1.03E-01 <MDA <MDA SR-152-2700 Batch 168 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2701 Batch 168 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2702 Batch 168 Clean Stockpile 10 1.68E-01 5.80E-02 <MDA <MDA SR-152-2703 Batch 168 Clean Stockpile 11 1.44E-01 7.08E-02 <MDA <MDA SR-152-2704 Batch 168 Clean Stockpile 12 1.83E-01 5.73E-02 <MDA <MDA SR-152-2705 Batch 168 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2706 Batch 168 Clean Stockpile 14 1.79E-01 5.82E-02 <MDA <MDA Batch 168 Clean Stockpile 15 SR-152-2707 QCI 2.04E-01 9.12E-02 <MDA <MDA Batch 168 Clean Stockpile 16 SR-152-2708 QCR 1.62E-01 5.76E-02 <MDA <MDA SR-152-2728 Batch 168 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-2709 Batch 169 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2710 Batch 169 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2711 Batch 169 Clean Stockpile 3 1.85E-01 8.97E-02 <MDA <MDA SR-152-2712 Batch 169 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2713 Batch 169 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2714 Batch 169 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2715 Batch 169 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2716 Batch 169 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2717 Batch 169 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2718 Batch 169 Clean Stockpile 10 1.86E-01 6.60E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 76 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2719 Batch 169 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2720 Batch 169 Clean Stockpile 12 1.72E-01 7.28E-02 <MDA <MDA SR-152-2721 Batch 169 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2722 Batch 169 Clean Stockpile 14 1.79E-01 8.45E-02 <MDA <MDA SR-152-2723 Batch 169 Clean Stockpile 15 1.99E-01 8.68E-02 <MDA <MDA SR-152-2724 Batch 169 Clean Stockpile 16 1.84E-01 6.16E-02 <MDA <MDA SR-152-2725 Batch 170 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2726 Batch 170 Clean Stockpile 2 1.69E-01 7.98E-02 <MDA <MDA SR-152-2727 Batch 170 Clean Stockpile 3 1.39E-01 5.32E-02 <MDA <MDA SR-152-2729 Batch 170 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2730 Batch 170 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2731 Batch 170 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2732 Batch 170 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2733 Batch 170 Clean Stockpile 8 1.60E-01 7.75E-02 <MDA <MDA SR-152-2734 Batch 170 Clean Stockpile 9 2.27E-01 9.48E-02 <MDA <MDA SR-152-2735 Batch 170 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2736 Batch 170 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2737 Batch 170 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2738 Batch 170 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2739 Batch 170 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2740 Batch 170 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2741 Batch 170 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2742 Batch 171 Clean Stockpile 1 1.97E-01 8.43E-02 <MDA <MDA SR-152-2743 Batch 171 Clean Stockpile 2 1.46E-01 5.34E-02 <MDA <MDA SR-152-2744 Batch 171 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2745 Batch 171 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2746 Batch 171 Clean Stockpile 5 1.60E-01 5.42E-02 <MDA <MDA SR-152-2747 Batch 171 Clean Stockpile 6 1.75E-01 8.03E-02 <MDA <MDA SR-152-2748 Batch 171 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2749 Batch 171 Clean Stockpile 8 2.48E-01 9.56E-02 <MDA <MDA SR-152-2750 Batch 171 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2751 Batch 171 Clean Stockpile 10 2.42E-01 7.25E-02 <MDA <MDA SR-152-2752 Batch 171 Clean Stockpile 11 1.73E-01 5.78E-02 <MDA <MDA SR-152-2753 Batch 171 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2754 Batch 171 Clean Stockpile 13 1.47E-01 5.29E-02 <MDA <MDA SR-152-2755 Batch 171 Clean Stockpile 14 2.14E-01 7.51E-02 <MDA <MDA Batch 171 Clean Stockpile 15 SR-152-2756 QCI <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 77 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g Batch 171 Clean Stockpile 16 SR-152-2757 QCR <MDA <MDA <MDA <MDA SR-152-2790 Batch 171 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-2758 Batch 172 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2759 Batch 172 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2760 Batch 172 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2761 Batch 172 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2762 Batch 172 Clean Stockpile 5 1.92E-01 9.07E-02 <MDA <MDA SR-152-2763 Batch 172 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2764 Batch 172 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2765 Batch 172 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2766 Batch 172 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2767 Batch 172 Clean Stockpile 10 1.84E-01 8.92E-02 <MDA <MDA SR-152-2768 Batch 172 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2769 Batch 172 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2770 Batch 172 Clean Stockpile 13 2.33E-01 9.36E-02 <MDA <MDA SR-152-2771 Batch 172 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2772 Batch 172 Clean Stockpile 15 1.34E-01 5.35E-02 <MDA <MDA SR-152-2773 Batch 172 Clean Stockpile 16 1.59E-01 5.91E-02 <MDA <MDA SR-152-2782 Batch 173 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2783 Batch 173 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2784 Batch 173 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2785 Batch 173 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2786 Batch 173 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2787 Batch 173 Clean Stockpile 6 <MDA <MDA <MDA <MDA Batch 173 Clean Stockpile 7

SR-152-2788 QCI 1.05E-01 4.51E-02 <MDA <MDA Batch 173 Clean Stockpile 8

SR-152-2789 QCR 1.14E-01 4.77E-02 <MDA <MDA SR-152-2774 Batch 173 Clean Stockpile 9 1.19E-01 4.02E-02 <MDA <MDA SR-152-2775 Batch 173 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2776 Batch 173 Clean Stockpile 11 1.97E-01 8.81E-02 <MDA <MDA SR-152-2777 Batch 173 Clean Stockpile 12 1.65E-01 7.74E-02 <MDA <MDA SR-152-2778 Batch 173 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2779 Batch 173 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2780 Batch 173 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2781 Batch 173 Clean Stockpile 16 2.12E-01 9.25E-02 <MDA <MDA SR-152-2791 Batch 174 Clean Stockpile 1 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 78 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2792 Batch 174 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2793 Batch 174 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2794 Batch 174 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2795 Batch 174 Clean Stockpile 5 2.20E-01 9.64E-02 <MDA <MDA SR-152-2796 Batch 174 Clean Stockpile 6 2.52E-01 1.08E-01 <MDA <MDA SR-152-2797 Batch 174 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2798 Batch 174 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2799 Batch 174 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2800 Batch 174 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2801 Batch 174 Clean Stockpile 11 2.78E-01 1.11E-01 <MDA <MDA SR-152-2802 Batch 174 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2803 Batch 174 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2804 Batch 174 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2805 Batch 174 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2806 Batch 174 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2807 Batch 175 Clean Stockpile 1 1.85E-01 8.74E-02 <MDA <MDA SR-152-2808 Batch 175 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2809 Batch 175 Clean Stockpile 3 1.97E-01 9.30E-02 <MDA <MDA SR-152-2810 Batch 175 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2811 Batch 175 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2812 Batch 175 Clean Stockpile 6 1.96E-01 9.82E-02 <MDA <MDA SR-152-2813 Batch 175 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2814 Batch 175 Clean Stockpile 8 8.01E-01 1.91E-01 <MDA <MDA SR-152-2815 Batch 175 Clean Stockpile 9 2.10E-01 9.89E-02 <MDA <MDA SR-152-2816 Batch 175 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2817 Batch 175 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2818 Batch 175 Clean Stockpile 12 1.95E-01 9.19E-02 <MDA <MDA SR-152-2819 Batch 175 Clean Stockpile 13 1.79E-01 8.98E-02 <MDA <MDA SR-152-2820 Batch 175 Clean Stockpile 14 <MDA <MDA <MDA <MDA Batch 175 Clean Stockpile 15 SR-152-2821 QCI <MDA <MDA <MDA <MDA Batch 175 Clean Stockpile 16 SR-152-2822 QCR <MDA <MDA <MDA <MDA SR-152-2823 Batch 175 Clean Stockpile 17 <MDA <MDA <MDA <MDA SR-152-2824 Batch 176 Clean Stockpile 1 1.57E-01 7.60E-02 <MDA <MDA SR-152-2825 Batch 176 Clean Stockpile 2 2.10E-01 8.97E-02 <MDA <MDA SR-152-2826 Batch 176 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2827 Batch 176 Clean Stockpile 4 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 79 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2828 Batch 176 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2829 Batch 176 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2830 Batch 176 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2831 Batch 176 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2832 Batch 176 Clean Stockpile 9 1.99E-01 8.50E-02 <MDA <MDA SR-152-2833 Batch 176 Clean Stockpile 10 2.01E-01 8.79E-02 <MDA <MDA SR-152-2834 Batch 176 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2835 Batch 176 Clean Stockpile 12 2.11E-01 9.01E-02 <MDA <MDA SR-152-2836 Batch 176 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2837 Batch 176 Clean Stockpile 14 2.34E-01 9.39E-02 <MDA <MDA SR-152-2838 Batch 176 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2839 Batch 176 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2840 Batch 177 Clean Stockpile 1 1.90E-01 8.51E-02 <MDA <MDA SR-152-2841 Batch 177 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2842 Batch 177 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2843 Batch 177 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2844 Batch 177 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2845 Batch 177 Clean Stockpile 6 2.59E-01 1.04E-01 <MDA <MDA SR-152-2846 Batch 177 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2847 Batch 177 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2848 Batch 177 Clean Stockpile 9 1.87E-01 8.82E-02 <MDA <MDA SR-152-2849 Batch 177 Clean Stockpile 10 2.21E-01 9.03E-02 <MDA <MDA SR-152-2850 Batch 177 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2851 Batch 177 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2852 Batch 177 Clean Stockpile 13 1.90E-01 8.33E-02 <MDA <MDA SR-152-2853 Batch 177 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2854 Batch 177 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2855 Batch 177 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2856 Batch 178 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2857 Batch 178 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2858 Batch 178 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2859 Batch 178 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2860 Batch 178 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2861 Batch 178 Clean Stockpile 6 1.92E-01 9.07E-02 <MDA <MDA SR-152-2862 Batch 178 Clean Stockpile 7 1.26E-01 5.40E-02 <MDA <MDA SR-152-2863 Batch 178 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2864 Batch 178 Clean Stockpile 9 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 80 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2865 Batch 178 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2866 Batch 178 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2867 Batch 178 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2868 Batch 178 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2869 Batch 178 Clean Stockpile 14 2.11E-01 9.24E-02 <MDA <MDA SR-152-2870 Batch 178 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2871 Batch 178 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2872 Batch 179 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2873 Batch 179 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2874 Batch 179 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2875 Batch 179 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2876 Batch 179 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2877 Batch 179 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2878 Batch 179 Clean Stockpile 7 3.28E-01 1.20E-01 <MDA <MDA SR-152-2879 Batch 179 Clean Stockpile 8 2.51E-01 1.24E-01 <MDA <MDA SR-152-2880 Batch 179 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2881 Batch 179 Clean Stockpile 10 1.96E-01 9.54E-02 <MDA <MDA SR-152-2882 Batch 179 Clean Stockpile 11 1.80E-01 8.49E-02 <MDA <MDA SR-152-2883 Batch 179 Clean Stockpile 12 2.55E-01 1.09E-01 <MDA <MDA SR-152-2884 Batch 179 Clean Stockpile 13 2.49E-01 1.09E-01 <MDA <MDA SR-152-2885 Batch 179 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2886 Batch 179 Clean Stockpile 15 1.55E-01 5.76E-02 <MDA <MDA SR-152-2887 Batch 179 Clean Stockpile 16 1.85E-01 6.45E-02 <MDA <MDA SR-152-2888 Batch 180 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2889 Batch 180 Clean Stockpile 2 4.00E-01 1.32E-01 <MDA <MDA SR-152-2890 Batch 180 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2891 Batch 180 Clean Stockpile 4 2.97E-01 1.17E-01 <MDA <MDA SR-152-2892 Batch 180 Clean Stockpile 5 <MDA <MDA <MDA <MDA Batch 180 Clean Stockpile 6

SR-152-2893 QCI 3.21E-01 9.84E-02 <MDA <MDA Batch 180 Clean Stockpile 7

SR-152-2894 QCR 3.29E-01 1.18E-01 <MDA <MDA SR-152-2895 Batch 180 Clean Stockpile 8 2.39E-01 9.77E-02 <MDA <MDA SR-152-2896 Batch 180 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2897 Batch 180 Clean Stockpile 10 3.55E-01 1.20E-01 <MDA <MDA SR-152-2898 Batch 180 Clean Stockpile 11 3.96E-01 1.27E-01 <MDA <MDA SR-152-2899 Batch 180 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2900 Batch 180 Clean Stockpile 13 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 81 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2901 Batch 180 Clean Stockpile 14 2.28E-01 9.52E-02 <MDA <MDA SR-152-2939 Batch 180 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2940 Batch 180 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2902 Batch 181 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2903 Batch 181 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2904 Batch 181 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2905 Batch 181 Clean Stockpile 4 3.73E-01 1.23E-01 <MDA <MDA SR-152-2906 Batch 181 Clean Stockpile 5 <MDA <MDA <MDA <MDA Batch 181 Clean Stockpile 6

SR-152-2907 QCI <MDA <MDA <MDA <MDA Batch 181 Clean Stockpile 7

SR-152-2908 QCR <MDA <MDA <MDA <MDA SR-152-2909 Batch 181 Clean Stockpile 8 2.60E-01 1.04E-01 <MDA <MDA SR-152-2910 Batch 181 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2911 Batch 181 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-2912 Batch 181 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2913 Batch 181 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2914 Batch 181 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2941 Batch 181 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2942 Batch 181 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2967 Batch 181 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2915 Batch 182 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2916 Batch 182 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2917 Batch 182 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2918 Batch 182 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2919 Batch 182 Clean Stockpile 5 2.58E-01 1.04E-01 <MDA <MDA Batch 182 Clean Stockpile 6

SR-152-2920 QCI <MDA <MDA <MDA <MDA Batch 182 Clean Stockpile 7

SR-152-2921 QCR <MDA <MDA <MDA <MDA SR-152-2922 Batch 182 Clean Stockpile 8 3.13E-01 1.26E-01 <MDA <MDA SR-152-2923 Batch 182 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2924 Batch 182 Clean Stockpile 10 2.27E-01 9.71E-02 <MDA <MDA SR-152-2925 Batch 182 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2926 Batch 182 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2927 Batch 182 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2928 Batch 182 Clean Stockpile 14 2.54E-01 1.02E-01 <MDA <MDA SR-152-2929 Batch 182 Clean Stockpile 15 3.24E-01 1.20E-01 <MDA <MDA SR-152-2930 Batch 182 Clean Stockpile 16 3.22E-01 1.20E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 82 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2931 Batch 183 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2932 Batch 183 Clean Stockpile 2 2.83E-01 9.43E-02 <MDA <MDA SR-152-2933 Batch 183 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2934 Batch 183 Clean Stockpile 4 3.39E-01 1.22E-01 <MDA <MDA SR-152-2935 Batch 183 Clean Stockpile 5 4.27E-01 1.45E-01 <MDA <MDA SR-152-2936 Batch 183 Clean Stockpile 6 2.50E-01 8.52E-02 <MDA <MDA SR-152-2937 Batch 183 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2938 Batch 183 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-2943 Batch 183 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2944 Batch 183 Clean Stockpile 10 2.75E-01 1.12E-01 <MDA <MDA SR-152-2945 Batch 183 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2946 Batch 183 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2947 Batch 183 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2948 Batch 183 Clean Stockpile 14 2.51E-01 1.03E-01 <MDA <MDA SR-152-2949 Batch 183 Clean Stockpile 15 2.58E-01 9.77E-02 <MDA <MDA SR-152-2950 Batch 183 Clean Stockpile 16 2.54E-01 1.02E-01 <MDA <MDA SR-152-2951 Batch 184 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2952 Batch 184 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2953 Batch 184 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2954 Batch 184 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2955 Batch 184 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-2956 Batch 184 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2957 Batch 184 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-2958 Batch 184 Clean Stockpile 8 3.02E-01 1.11E-01 <MDA <MDA SR-152-2959 Batch 184 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-2960 Batch 184 Clean Stockpile 10 1.53E-01 7.44E-02 <MDA <MDA SR-152-2961 Batch 184 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2962 Batch 184 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2963 Batch 184 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2964 Batch 184 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-2965 Batch 184 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-2966 Batch 184 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-2968 Batch 185 Clean Stockpile 1 2.70E-01 1.31E-01 <MDA <MDA SR-152-2969 Batch 185 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-2970 Batch 185 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-2971 Batch 185 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2972 Batch 185 Clean Stockpile 5 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 83 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-2973 Batch 185 Clean Stockpile 6 2.90E-01 1.16E-01 <MDA <MDA SR-152-2974 Batch 185 Clean Stockpile 7 3.56E-01 1.28E-01 <MDA <MDA SR-152-2975 Batch 185 Clean Stockpile 8 2.69E-01 1.13E-01 <MDA <MDA SR-152-2976 Batch 185 Clean Stockpile 9 2.75E-01 7.96E-02 <MDA <MDA SR-152-2977 Batch 185 Clean Stockpile 10 2.58E-01 9.37E-02 <MDA <MDA SR-152-2978 Batch 185 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-2979 Batch 185 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-2980 Batch 185 Clean Stockpile 13 4.33E-01 1.43E-01 <MDA <MDA SR-152-2981 Batch 185 Clean Stockpile 14 3.44E-01 1.04E-01 <MDA <MDA SR-152-2982 Batch 185 Clean Stockpile 15 2.70E-01 1.04E-01 <MDA <MDA SR-152-2983 Batch 185 Clean Stockpile 16 4.18E-01 1.29E-01 <MDA <MDA SR-152-2984 Batch 186 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-2985 Batch 186 Clean Stockpile 2 2.13E-01 1.01E-01 <MDA <MDA SR-152-2986 Batch 186 Clean Stockpile 3 3.23E-01 1.20E-01 <MDA <MDA SR-152-2987 Batch 186 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-2988 Batch 186 Clean Stockpile 5 3.85E-01 1.36E-01 <MDA <MDA SR-152-2989 Batch 186 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-2990 Batch 186 Clean Stockpile 7 2.92E-01 1.39E-01 <MDA <MDA SR-152-2991 Batch 186 Clean Stockpile 8 2.11E-01 9.71E-02 <MDA <MDA SR-152-2992 Batch 186 Clean Stockpile 9 3.26E-01 1.26E-01 <MDA <MDA SR-152-2993 Batch 186 Clean Stockpile 10 3.64E-01 1.29E-01 <MDA <MDA SR-152-2994 Batch 186 Clean Stockpile 11 3.20E-01 1.26E-01 <MDA <MDA SR-152-2995 Batch 186 Clean Stockpile 12 3.70E-01 1.31E-01 <MDA <MDA SR-152-2996 Batch 186 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-2997 Batch 186 Clean Stockpile 14 4.10E-01 1.37E-01 <MDA <MDA Batch 186 Clean Stockpile 15 SR-152-2998 QCI 2.64E-01 1.13E-01 <MDA <MDA Batch 186 Clean Stockpile 16 SR-152-2999 QCR 3.31E-01 1.38E-01 <MDA <MDA SR-152-3008 Batch 186 Clean Stockpile 17 2.60E-01 1.09E-01 <MDA <MDA SR-152-3009 Batch 186 Clean Stockpile 18 3.29E-01 1.23E-01 <MDA <MDA SR-152-3000 Batch 187 Clean Stockpile 1 2.73E-01 1.14E-01 <MDA <MDA SR-152-3001 Batch 187 Clean Stockpile 2 3.83E-01 1.34E-01 <MDA <MDA SR-152-3002 Batch 187 Clean Stockpile 3 2.90E-01 1.14E-01 <MDA <MDA SR-152-3003 Batch 187 Clean Stockpile 4 3.03E-01 1.17E-01 <MDA <MDA SR-152-3004 Batch 187 Clean Stockpile 5 3.70E-01 1.31E-01 <MDA <MDA SR-152-3005 Batch 187 Clean Stockpile 6 4.15E-01 1.39E-01 <MDA <MDA SR-152-3006 Batch 187 Clean Stockpile 7 2.84E-01 1.19E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 84 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3007 Batch 187 Clean Stockpile 8 3.53E-01 1.29E-01 <MDA <MDA SR-152-3010 Batch 187 Clean Stockpile 9 3.25E-01 1.25E-01 <MDA <MDA SR-152-3011 Batch 187 Clean Stockpile 10 3.99E-01 1.35E-01 <MDA <MDA SR-152-3012 Batch 187 Clean Stockpile 11 4.11E-01 1.39E-01 <MDA <MDA SR-152-3013 Batch 187 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-3014 Batch 187 Clean Stockpile 13 2.94E-01 1.23E-01 <MDA <MDA SR-152-3015 Batch 187 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-3016 Batch 187 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-3017 Batch 187 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-3018 Batch 188 Clean Stockpile 1 3.71E-01 1.38E-01 <MDA <MDA SR-152-3019 Batch 188 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-3020 Batch 188 Clean Stockpile 3 2.55E-01 1.12E-01 <MDA <MDA SR-152-3021 Batch 188 Clean Stockpile 4 3.72E-01 1.32E-01 <MDA <MDA SR-152-3022 Batch 188 Clean Stockpile 5 2.73E-01 1.17E-01 <MDA <MDA SR-152-3023 Batch 188 Clean Stockpile 6 2.86E-01 1.17E-01 <MDA <MDA SR-152-3024 Batch 188 Clean Stockpile 7 2.64E-01 1.13E-01 <MDA <MDA SR-152-3025 Batch 188 Clean Stockpile 8 2.81E-01 1.17E-01 <MDA <MDA SR-152-3026 Batch 188 Clean Stockpile 9 2.56E-01 1.12E-01 <MDA <MDA SR-152-3027 Batch 188 Clean Stockpile 10 4.14E-01 1.63E-01 <MDA <MDA SR-152-3028 Batch 188 Clean Stockpile 11 2.95E-01 1.18E-01 <MDA <MDA SR-152-3029 Batch 188 Clean Stockpile 12 2.31E-01 7.52E-02 <MDA <MDA SR-152-3030 Batch 188 Clean Stockpile 13 3.42E-01 1.32E-01 <MDA <MDA SR-152-3031 Batch 188 Clean Stockpile 14 2.63E-01 1.15E-01 <MDA <MDA SR-152-3032 Batch 188 Clean Stockpile 15 2.05E-01 8.02E-02 <MDA <MDA SR-152-3033 Batch 188 Clean Stockpile 16 2.82E-01 1.11E-01 <MDA <MDA SR-152-3034 Batch 189 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-3035 Batch 189 Clean Stockpile 2 2.71E-01 8.44E-02 <MDA <MDA SR-152-3036 Batch 189 Clean Stockpile 3 4.70E-01 1.70E-01 <MDA <MDA SR-152-3037 Batch 189 Clean Stockpile 4 3.06E-01 1.20E-01 <MDA <MDA SR-152-3038 Batch 189 Clean Stockpile 5 2.86E-01 1.13E-01 <MDA <MDA SR-152-3039 Batch 189 Clean Stockpile 6 3.34E-01 9.05E-02 <MDA <MDA SR-152-3040 Batch 189 Clean Stockpile 7 3.40E-01 1.25E-01 <MDA <MDA SR-152-3041 Batch 189 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-3042 Batch 189 Clean Stockpile 9 <MDA <MDA <MDA <MDA SR-152-3043 Batch 189 Clean Stockpile 10 2.88E-01 1.18E-01 <MDA <MDA SR-152-3044 Batch 189 Clean Stockpile 11 1.95E-01 9.77E-02 <MDA <MDA SR-152-3045 Batch 189 Clean Stockpile 12 3.64E-01 1.29E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 85 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3046 Batch 189 Clean Stockpile 13 2.80E-01 1.17E-01 <MDA <MDA SR-152-3047 Batch 189 Clean Stockpile 14 4.03E-01 9.63E-02 <MDA <MDA SR-152-3048 Batch 189 Clean Stockpile 15 4.02E-01 1.40E-01 <MDA <MDA SR-152-3049 Batch 189 Clean Stockpile 16 3.05E-01 8.55E-02 <MDA <MDA SR-152-3050 Batch 190 Clean Stockpile 1 3.71E-01 1.31E-01 <MDA <MDA SR-152-3051 Batch 190 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-3052 Batch 190 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-3053 Batch 190 Clean Stockpile 4 3.61E-01 1.32E-01 <MDA <MDA SR-152-3054 Batch 190 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-3055 Batch 190 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-3056 Batch 190 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-3057 Batch 190 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-3058 Batch 190 Clean Stockpile 9 3.00E-01 1.16E-01 <MDA <MDA SR-152-3059 Batch 190 Clean Stockpile 10 5.36E-01 1.82E-01 <MDA <MDA SR-152-3060 Batch 190 Clean Stockpile 11 3.38E-01 1.24E-01 <MDA <MDA SR-152-3061 Batch 190 Clean Stockpile 12 2.47E-01 1.03E-01 <MDA <MDA SR-152-3062 Batch 190 Clean Stockpile 13 4.63E-01 1.51E-01 <MDA <MDA SR-152-3063 Batch 190 Clean Stockpile 14 2.81E-01 1.15E-01 <MDA <MDA Batch 190 Clean Stockpile 15 SR-152-3064 QCI 3.18E-01 1.21E-01 <MDA <MDA Batch 190 Clean Stockpile 16 SR-152-3065 QCR 2.78E-01 1.16E-01 <MDA <MDA SR-152-3082 Batch 190 Clean Stockpile 17 4.48E-01 1.50E-01 <MDA <MDA SR-152-3083 Batch 190 Clean Stockpile 18 3.08E-01 1.19E-01 <MDA <MDA SR-152-3066 Batch 191 Clean Stockpile 1 4.32E-01 1.44E-01 <MDA <MDA SR-152-3067 Batch 191 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-3068 Batch 191 Clean Stockpile 3 3.11E-01 1.25E-01 <MDA <MDA SR-152-3069 Batch 191 Clean Stockpile 4 4.28E-01 1.41E-01 <MDA <MDA SR-152-3070 Batch 191 Clean Stockpile 5 3.15E-01 1.24E-01 <MDA <MDA SR-152-3071 Batch 191 Clean Stockpile 6 4.13E-01 1.36E-01 <MDA <MDA SR-152-3072 Batch 191 Clean Stockpile 7 3.02E-01 1.21E-01 <MDA <MDA SR-152-3073 Batch 191 Clean Stockpile 8 3.02E-01 1.38E-01 <MDA <MDA SR-152-3074 Batch 191 Clean Stockpile 9 3.16E-01 1.24E-01 <MDA <MDA SR-152-3075 Batch 191 Clean Stockpile 10 3.11E-01 1.22E-01 <MDA <MDA SR-152-3076 Batch 191 Clean Stockpile 11 2.48E-01 8.54E-02 <MDA <MDA SR-152-3077 Batch 191 Clean Stockpile 12 2.74E-01 1.17E-01 <MDA <MDA SR-152-3078 Batch 191 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-3079 Batch 191 Clean Stockpile 14 3.84E-01 1.38E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 86 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3080 Batch 191 Clean Stockpile 15 2.68E-01 1.07E-01 <MDA <MDA SR-152-3081 Batch 191 Clean Stockpile 16 2.61E-01 1.05E-01 <MDA <MDA SR-152-3084 Batch 192 Clean Stockpile 1 2.57E-01 1.12E-01 <MDA <MDA SR-152-3085 Batch 192 Clean Stockpile 2 2.85E-01 1.14E-01 <MDA <MDA SR-152-3086 Batch 192 Clean Stockpile 3 2.83E-01 1.02E-01 <MDA <MDA SR-152-3087 Batch 192 Clean Stockpile 4 2.59E-01 1.08E-01 <MDA <MDA SR-152-3088 Batch 192 Clean Stockpile 5 4.07E-01 1.36E-01 <MDA <MDA SR-152-3089 Batch 192 Clean Stockpile 6 2.98E-01 1.19E-01 <MDA <MDA SR-152-3090 Batch 192 Clean Stockpile 7 4.34E-01 1.43E-01 <MDA <MDA SR-152-3091 Batch 192 Clean Stockpile 8 3.69E-01 1.31E-01 <MDA <MDA SR-152-3092 Batch 192 Clean Stockpile 9 4.51E-01 1.49E-01 <MDA <MDA SR-152-3093 Batch 192 Clean Stockpile 10 4.99E-01 1.56E-01 <MDA <MDA SR-152-3094 Batch 192 Clean Stockpile 11 2.45E-01 1.10E-01 <MDA <MDA SR-152-3095 Batch 192 Clean Stockpile 12 2.78E-01 1.14E-01 <MDA <MDA SR-152-3096 Batch 192 Clean Stockpile 13 3.53E-01 1.23E-01 <MDA <MDA SR-152-3097 Batch 192 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-3098 Batch 192 Clean Stockpile 15 3.16E-01 9.45E-02 <MDA <MDA SR-152-3099 Batch 192 Clean Stockpile 16 5.11E-01 1.60E-01 <MDA <MDA SR-152-3100 Batch 193 Clean Stockpile 1 2.73E-01 1.09E-01 <MDA <MDA SR-152-3101 Batch 193 Clean Stockpile 2 2.83E-01 1.11E-01 <MDA <MDA SR-152-3102 Batch 193 Clean Stockpile 3 4.09E-01 1.39E-01 <MDA <MDA SR-152-3103 Batch 193 Clean Stockpile 4 3.83E-01 1.28E-01 <MDA <MDA SR-152-3104 Batch 193 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-3105 Batch 193 Clean Stockpile 6 3.09E-01 1.19E-01 <MDA <MDA SR-152-3106 Batch 193 Clean Stockpile 7 3.82E-01 1.31E-01 <MDA <MDA SR-152-3107 Batch 193 Clean Stockpile 8 2.68E-01 1.05E-01 <MDA <MDA SR-152-3108 Batch 193 Clean Stockpile 9 3.66E-01 1.22E-01 <MDA <MDA SR-152-3109 Batch 193 Clean Stockpile 10 3.41E-01 1.19E-01 <MDA <MDA SR-152-3110 Batch 193 Clean Stockpile 11 4.14E-01 1.48E-01 <MDA <MDA SR-152-3111 Batch 193 Clean Stockpile 12 4.56E-01 1.51E-01 <MDA <MDA SR-152-3112 Batch 193 Clean Stockpile 13 3.31E-01 1.28E-01 <MDA <MDA SR-152-3113 Batch 193 Clean Stockpile 14 2.90E-01 1.10E-01 <MDA <MDA SR-152-3114 Batch 193 Clean Stockpile 15 5.98E-01 1.55E-01 <MDA <MDA SR-152-3115 Batch 193 Clean Stockpile 16 4.60E-01 1.47E-01 <MDA <MDA SR-152-3116 Batch 194 Clean Stockpile 1 8.64E-01 1.99E-01 <MDA <MDA SR-152-3117 Batch 194 Clean Stockpile 2 6.84E-01 1.70E-01 <MDA <MDA SR-152-3118 Batch 194 Clean Stockpile 3 5.86E-01 1.56E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 87 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3119 Batch 194 Clean Stockpile 4 2.98E-01 1.11E-01 <MDA <MDA SR-152-3120 Batch 194 Clean Stockpile 5 3.63E-01 1.27E-01 <MDA <MDA SR-152-3121 Batch 194 Clean Stockpile 6 4.63E-01 1.42E-01 <MDA <MDA SR-152-3122 Batch 194 Clean Stockpile 7 6.01E-01 1.76E-01 <MDA <MDA SR-152-3123 Batch 194 Clean Stockpile 8 5.28E-01 1.55E-01 <MDA <MDA SR-152-3124 Batch 194 Clean Stockpile 9 4.20E-01 1.41E-01 <MDA <MDA SR-152-3125 Batch 194 Clean Stockpile 10 5.17E-01 1.51E-01 <MDA <MDA SR-152-3126 Batch 194 Clean Stockpile 11 4.77E-01 1.37E-01 <MDA <MDA SR-152-3127 Batch 194 Clean Stockpile 12 5.53E-01 1.64E-01 <MDA <MDA SR-152-3128 Batch 194 Clean Stockpile 13 4.54E-01 1.50E-01 <MDA <MDA SR-152-3129 Batch 194 Clean Stockpile 14 4.29E-01 1.53E-01 <MDA <MDA SR-152-3130 Batch 194 Clean Stockpile 15 4.72E-01 1.50E-01 <MDA <MDA SR-152-3131 Batch 194 Clean Stockpile 16 4.52E-01 1.42E-01 <MDA <MDA SR-152-3132 Batch 195 Clean Stockpile 1 6.26E-01 1.71E-01 <MDA <MDA SR-152-3133 Batch 195 Clean Stockpile 2 4.95E-01 1.48E-01 <MDA <MDA SR-152-3134 Batch 195 Clean Stockpile 3 5.34E-01 1.62E-01 <MDA <MDA SR-152-3135 Batch 195 Clean Stockpile 4 4.96E-01 1.04E-01 <MDA <MDA SR-152-3136 Batch 195 Clean Stockpile 5 5.47E-01 1.66E-01 <MDA <MDA SR-152-3137 Batch 195 Clean Stockpile 6 4.17E-01 1.36E-01 <MDA <MDA SR-152-3138 Batch 195 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-3139 Batch 195 Clean Stockpile 8 5.43E-01 1.54E-01 <MDA <MDA SR-152-3140 Batch 195 Clean Stockpile 9 4.98E-01 1.35E-01 <MDA <MDA SR-152-3141 Batch 195 Clean Stockpile 10 3.98E-01 1.39E-01 <MDA <MDA SR-152-3142 Batch 195 Clean Stockpile 11 3.98E-01 1.33E-01 <MDA <MDA SR-152-3143 Batch 195 Clean Stockpile 12 4.17E-01 1.34E-01 <MDA <MDA SR-152-3144 Batch 195 Clean Stockpile 13 2.80E-01 1.17E-01 <MDA <MDA SR-152-3145 Batch 195 Clean Stockpile 14 5.98E-01 1.64E-01 <MDA <MDA SR-152-3146 Batch 195 Clean Stockpile 15 4.07E-01 1.36E-01 <MDA <MDA SR-152-3147 Batch 195 Clean Stockpile 16 3.16E-01 9.07E-02 <MDA <MDA SR-152-3148 Batch 196 Clean Stockpile 1 4.06E-01 1.64E-01 <MDA <MDA SR-152-3149 Batch 196 Clean Stockpile 2 6.29E-01 1.66E-01 <MDA <MDA SR-152-3150 Batch 196 Clean Stockpile 3 6.03E-01 1.65E-01 <MDA <MDA SR-152-3151 Batch 196 Clean Stockpile 4 5.14E-01 1.48E-01 <MDA <MDA SR-152-3152 Batch 196 Clean Stockpile 5 4.73E-01 1.48E-01 <MDA <MDA SR-152-3153 Batch 196 Clean Stockpile 6 6.25E-01 1.66E-01 <MDA <MDA SR-152-3154 Batch 196 Clean Stockpile 7 6.19E-01 1.17E-01 <MDA <MDA SR-152-3155 Batch 196 Clean Stockpile 8 1.08E+00 2.18E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 88 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3156 Batch 196 Clean Stockpile 9 7.58E-01 1.65E-01 <MDA <MDA SR-152-3157 Batch 196 Clean Stockpile 10 8.83E-01 1.87E-01 <MDA <MDA SR-152-3158 Batch 196 Clean Stockpile 11 7.73E-01 2.22E-01 <MDA <MDA SR-152-3159 Batch 196 Clean Stockpile 12 8.03E-01 1.74E-01 <MDA <MDA SR-152-3160 Batch 196 Clean Stockpile 13 7.85E-01 1.78E-01 <MDA <MDA SR-152-3161 Batch 196 Clean Stockpile 14 6.92E-01 1.70E-01 <MDA <MDA SR-152-3162 Batch 196 Clean Stockpile 15 8.17E-01 1.76E-01 <MDA <MDA SR-152-3163 Batch 196 Clean Stockpile 16 6.76E-01 1.71E-01 <MDA <MDA SR-152-3164 Batch 197 Clean Stockpile 1 3.70E-01 1.31E-01 <MDA <MDA SR-152-3165 Batch 197 Clean Stockpile 2 3.10E-01 1.24E-01 <MDA <MDA SR-152-3166 Batch 197 Clean Stockpile 3 3.91E-01 1.39E-01 <MDA <MDA SR-152-3167 Batch 197 Clean Stockpile 4 5.16E-01 1.54E-01 <MDA <MDA SR-152-3168 Batch 197 Clean Stockpile 5 5.04E-01 1.58E-01 <MDA <MDA SR-152-3169 Batch 197 Clean Stockpile 6 4.09E-01 1.63E-01 <MDA <MDA SR-152-3170 Batch 197 Clean Stockpile 7 5.75E-01 1.65E-01 <MDA <MDA SR-152-3171 Batch 197 Clean Stockpile 8 6.68E-01 1.76E-01 <MDA <MDA SR-152-3172 Batch 197 Clean Stockpile 9 6.64E-01 1.77E-01 <MDA <MDA SR-152-3173 Batch 197 Clean Stockpile 10 6.34E-01 1.72E-01 <MDA <MDA SR-152-3174 Batch 197 Clean Stockpile 11 5.57E-01 1.65E-01 <MDA <MDA SR-152-3175 Batch 197 Clean Stockpile 12 5.84E-01 1.75E-01 <MDA <MDA SR-152-3176 Batch 197 Clean Stockpile 13 6.70E-01 1.83E-01 <MDA <MDA SR-152-3177 Batch 197 Clean Stockpile 14 5.42E-01 1.92E-01 <MDA <MDA SR-152-3178 Batch 197 Clean Stockpile 15 6.08E-01 1.50E-01 <MDA <MDA SR-152-3179 Batch 197 Clean Stockpile 16 4.91E-01 1.32E-01 <MDA <MDA SR-152-3180 Batch 198 Clean Stockpile 1 5.40E-01 1.79E-01 <MDA <MDA SR-152-3181 Batch 198 Clean Stockpile 2 5.75E-01 1.78E-01 <MDA <MDA SR-152-3182 Batch 198 Clean Stockpile 3 5.66E-01 1.62E-01 <MDA <MDA SR-152-3183 Batch 198 Clean Stockpile 4 5.35E-01 1.57E-01 <MDA <MDA SR-152-3184 Batch 198 Clean Stockpile 5 8.51E-01 2.05E-01 <MDA <MDA SR-152-3185 Batch 198 Clean Stockpile 6 4.90E-01 1.52E-01 <MDA <MDA SR-152-3186 Batch 198 Clean Stockpile 7 7.09E-01 1.92E-01 <MDA <MDA SR-152-3187 Batch 198 Clean Stockpile 8 4.91E-01 1.49E-01 <MDA <MDA SR-152-3188 Batch 198 Clean Stockpile 9 7.29E-01 2.05E-01 <MDA <MDA SR-152-3189 Batch 198 Clean Stockpile 10 5.18E-01 1.57E-01 <MDA <MDA SR-152-3190 Batch 198 Clean Stockpile 11 4.84E-01 1.56E-01 <MDA <MDA SR-152-3191 Batch 198 Clean Stockpile 12 6.83E-01 1.76E-01 <MDA <MDA SR-152-3192 Batch 198 Clean Stockpile 13 5.95E-01 1.71E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 89 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3193 Batch 198 Clean Stockpile 14 3.10E-01 1.18E-01 <MDA <MDA SR-152-3194 Batch 198 Clean Stockpile 15 5.60E-01 1.64E-01 <MDA <MDA SR-152-3195 Batch 198 Clean Stockpile 16 5.88E-01 1.57E-01 <MDA <MDA SR-152-3196 Batch 199 Clean Stockpile 1 5.13E-01 1.47E-01 <MDA <MDA SR-152-3197 Batch 199 Clean Stockpile 2 5.78E-01 1.46E-01 <MDA <MDA SR-152-3198 Batch 199 Clean Stockpile 3 2.25E-01 9.84E-02 <MDA <MDA SR-152-3199 Batch 199 Clean Stockpile 4 3.63E-01 1.20E-01 <MDA <MDA SR-152-3200 Batch 199 Clean Stockpile 5 4.64E-01 1.55E-01 <MDA <MDA SR-152-3201 Batch 199 Clean Stockpile 6 5.45E-01 1.45E-01 <MDA <MDA SR-152-3202 Batch 199 Clean Stockpile 7 3.80E-01 1.14E-01 <MDA <MDA SR-152-3203 Batch 199 Clean Stockpile 8 3.67E-01 1.41E-01 <MDA <MDA SR-152-3204 Batch 199 Clean Stockpile 9 3.84E-01 1.25E-01 <MDA <MDA SR-152-3205 Batch 199 Clean Stockpile 10 2.22E-01 9.71E-02 <MDA <MDA SR-152-3206 Batch 199 Clean Stockpile 11 3.18E-01 7.02E-02 <MDA <MDA SR-152-3207 Batch 199 Clean Stockpile 12 2.22E-01 9.93E-02 <MDA <MDA SR-152-3208 Batch 199 Clean Stockpile 13 3.74E-01 1.30E-01 <MDA <MDA SR-152-3209 Batch 199 Clean Stockpile 14 <MDA <MDA <MDA <MDA Batch 199 Clean Stockpile 15 SR-152-3210 QCI <MDA <MDA <MDA <MDA Batch 199 Clean Stockpile 16 SR-152-3211 QCR <MDA <MDA <MDA <MDA SR-152-3212 Batch 200 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-3213 Batch 200 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-3214 Batch 200 Clean Stockpile 3 <MDA <MDA <MDA <MDA 2.7880E-4 SR-152-3215 Batch 200 Clean Stockpile 01 1.0755E-01 <MDA <MDA SR-152-3216 Batch 200 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-3217 Batch 200 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-3218 Batch 200 Clean Stockpile 7 2.46E-01 1.0276E-01 <MDA <MDA SR-152-3219 Batch 200 Clean Stockpile 8 1.87E-01 9.3741E-02 <MDA <MDA SR-152-3220 Batch 200 Clean Stockpile 9 5.14E-01 1.5369E-01 <MDA <MDA SR-152-3221 Batch 200 Clean Stockpile 10 3.27E-01 1.3041E-01 <MDA <MDA SR-152-3222 Batch 200 Clean Stockpile 11 3.34E-01 1.2419E-01 <MDA <MDA SR-152-3223 Batch 200 Clean Stockpile 12 4.08E-01 1.3654E-01 <MDA <MDA SR-152-3224 Batch 200 Clean Stockpile 13 3.93E-01 1.3631E-01 <MDA <MDA SR-152-3225 Batch 200 Clean Stockpile 14 3.52E-01 1.3752E-01 <MDA <MDA SR-152-3226 Batch 200 Clean Stockpile 15 3.77E-01 1.1422E-01 <MDA <MDA SR-152-3227 Batch 200 Clean Stockpile 16 4.21E-01 1.5048E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 90 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3228 Batch 201 Clean Stockpile 1 3.47E-01 1.2921E-01 <MDA <MDA SR-152-3229 Batch 201 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-3230 Batch 201 Clean Stockpile 3 2.84E-01 1.1633E-01 <MDA <MDA SR-152-3231 Batch 201 Clean Stockpile 4 3.99E-01 1.3737E-01 <MDA <MDA SR-152-3232 Batch 201 Clean Stockpile 5 3.10E-01 8.4677E-02 <MDA <MDA SR-152-3233 Batch 201 Clean Stockpile 6 4.19E-01 1.6126E-01 <MDA <MDA SR-152-3234 Batch 201 Clean Stockpile 7 2.31E-01 1.0453E-01 <MDA <MDA SR-152-3235 Batch 201 Clean Stockpile 8 2.68E-01 1.1466E-01 <MDA <MDA SR-152-3236 Batch 201 Clean Stockpile 9 1.86E-01 9.3126E-02 <MDA <MDA SR-152-3237 Batch 201 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-3238 Batch 201 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-3239 Batch 201 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-3240 Batch 201 Clean Stockpile 13 <MDA <MDA <MDA <MDA SR-152-3241 Batch 201 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-3242 Batch 201 Clean Stockpile 15 2.35E-01 7.5557E-02 <MDA <MDA SR-152-3243 Batch 201 Clean Stockpile 16 1.80E-01 8.5169E-02 <MDA <MDA 2.730E-1 SR-152-3244 Batch 202 Clean Stockpile 01 1.1390E-01 <MDA <MDA SR-152-3245 Batch 202 Clean Stockpile 2 2.15E-01 9.8955E-02 <MDA <MDA SR-152-3246 Batch 202 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-3247 Batch 202 Clean Stockpile 4 1.94E-01 9.7320E-02 <MDA <MDA SR-152-3248 Batch 202 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-3249 Batch 202 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-3250 Batch 202 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-3251 Batch 202 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-3252 Batch 202 Clean Stockpile 9 2.87E-01 1.1055E-01 <MDA <MDA SR-152-3253 Batch 202 Clean Stockpile 10 4.03E-01 1.1377E-01 <MDA <MDA SR-152-3254 Batch 202 Clean Stockpile 11 3.15E-01 1.1749E-01 <MDA <MDA SR-152-3255 Batch 202 Clean Stockpile 12 1.92E-01 8.5862E-02 <MDA <MDA SR-152-3256 Batch 202 Clean Stockpile 13 2.77E-01 1.1329E-01 <MDA <MDA SR-152-3257 Batch 202 Clean Stockpile 14 4.25E-01 1.3309E-01 <MDA <MDA SR-152-3258 Batch 202 Clean Stockpile 15 3.49E-01 1.2022E-01 <MDA <MDA SR-152-3259 Batch 202 Clean Stockpile 16 3.29E-01 1.0574E-01 <MDA <MDA SR-152-3261 Batch 203 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-3262 Batch 203 Clean Stockpile 2 2.39E-01 1.0218E-01 <MDA <MDA SR-152-3263 Batch 203 Clean Stockpile 3 3.48E-01 1.2135E-01 <MDA <MDA SR-152-3264 Batch 203 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-3265 Batch 203 Clean Stockpile 5 <MDA <MDA <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 91 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3266 Batch 203 Clean Stockpile 6 <MDA <MDA <MDA <MDA SR-152-3267 Batch 203 Clean Stockpile 7 2.73E-01 1.1202E-01 <MDA <MDA SR-152-3268 Batch 203 Clean Stockpile 8 3.29E-01 1.2452E-01 <MDA <MDA SR-152-3269 Batch 203 Clean Stockpile 9 3.29E-01 1.2449E-01 <MDA <MDA SR-152-3270 Batch 203 Clean Stockpile 10 2.33E-01 1.0431E-01 <MDA <MDA SR-152-3271 Batch 203 Clean Stockpile 11 2.74E-01 1.0966E-01 <MDA <MDA SR-152-3272 Batch 203 Clean Stockpile 12 2.97E-01 1.1691E-01 <MDA <MDA SR-152-3273 Batch 203 Clean Stockpile 13 4.18E-01 1.3985E-01 <MDA <MDA SR-152-3274 Batch 203 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-3275 Batch 203 Clean Stockpile 15 3.26E-01 1.0438E-01 <MDA <MDA SR-152-3276 Batch 203 Clean Stockpile 16 2.60E-01 7.3803E-02 <MDA <MDA SR-152-3277 Batch 204 Clean Stockpile 1 2.91E-01 1.1212E-01 <MDA <MDA SR-152-3278 Batch 204 Clean Stockpile 2 3.96E-01 1.4255E-01 <MDA <MDA SR-152-3279 Batch 204 Clean Stockpile 3 2.96E-01 1.0180E-01 <MDA <MDA SR-152-3280 Batch 204 Clean Stockpile 4 2.73E-01 1.1174E-01 <MDA <MDA SR-152-3281 Batch 204 Clean Stockpile 5 2.67E-01 1.2761E-01 <MDA <MDA SR-152-3282 Batch 204 Clean Stockpile 6 3.44E-01 1.2789E-01 <MDA <MDA SR-152-3283 Batch 204 Clean Stockpile 7 3.67E-01 1.2618E-01 <MDA <MDA SR-152-3284 Batch 204 Clean Stockpile 8 2.58E-01 1.1276E-01 <MDA <MDA SR-152-3285 Batch 204 Clean Stockpile 9 2.88E-01 1.1560E-01 <MDA <MDA SR-152-3286 Batch 204 Clean Stockpile 10 3.99E-01 1.3163E-01 <MDA <MDA SR-152-3287 Batch 204 Clean Stockpile 11 3.69E-01 1.3071E-01 <MDA <MDA SR-152-3288 Batch 204 Clean Stockpile 12 3.64E-01 1.3095E-01 <MDA <MDA SR-152-3289 Batch 204 Clean Stockpile 13 3.10E-01 1.4303E-01 <MDA <MDA SR-152-3290 Batch 204 Clean Stockpile 14 3.71E-01 1.3135E-01 <MDA <MDA SR-152-3291 Batch 204 Clean Stockpile 15 4.62E-01 1.3974E-01 <MDA <MDA SR-152-3292 Batch 204 Clean Stockpile 16 4.13E-01 1.2372E-01 <MDA <MDA SR-152-3293 Batch 205 Clean Stockpile 1 4.09E-01 1.5263E-01 <MDA <MDA SR-152-3294 Batch 205 Clean Stockpile 2 4.09E-01 1.3662E-01 <MDA <MDA SR-152-3295 Batch 205 Clean Stockpile 3 4.39E-01 1.4875E-01 <MDA <MDA SR-152-3296 Batch 205 Clean Stockpile 4 4.42E-01 1.3084E-01 <MDA <MDA SR-152-3297 Batch 205 Clean Stockpile 5 3.53E-01 1.2907E-01 <MDA <MDA SR-152-3298 Batch 205 Clean Stockpile 6 4.63E-01 1.4527E-01 <MDA <MDA SR-152-3299 Batch 205 Clean Stockpile 7 4.56E-01 1.5973E-01 <MDA <MDA SR-152-3300 Batch 205 Clean Stockpile 8 5.71E-01 1.5338E-01 <MDA <MDA SR-152-3301 Batch 205 Clean Stockpile 9 4.58E-01 1.4700E-01 <MDA <MDA SR-152-3302 Batch 205 Clean Stockpile 10 4.52E-01 1.4519E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 92 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3303 Batch 205 Clean Stockpile 11 4.71E-01 1.3414E-01 <MDA <MDA SR-152-3304 Batch 205 Clean Stockpile 12 3.65E-01 1.1440E-01 <MDA <MDA SR-152-3305 Batch 205 Clean Stockpile 13 4.97E-01 1.3606E-01 <MDA <MDA SR-152-3306 Batch 205 Clean Stockpile 14 4.62E-01 1.3268E-01 <MDA <MDA SR-152-3307 Batch 205 Clean Stockpile 15 4.38E-01 1.3107E-01 <MDA <MDA SR-152-3308 Batch 205 Clean Stockpile 16 5.50E-01 1.5033E-01 <MDA <MDA SR-152-3309 Batch 206 Clean Stockpile 1 4.69E-01 1.3595E-01 <MDA <MDA SR-152-3310 Batch 206 Clean Stockpile 2 7.42E-01 1.8228E-01 <MDA <MDA 6.1778E-3 SR-152-3311 Batch 206 Clean Stockpile 01 1.5533E-01 <MDA <MDA SR-152-3312 Batch 206 Clean Stockpile 4 4.30E-01 1.5294E-01 <MDA <MDA SR-152-3313 Batch 206 Clean Stockpile 5 4.48E-01 1.3417E-01 <MDA <MDA SR-152-3314 Batch 206 Clean Stockpile 6 3.14E-01 1.3143E-01 <MDA <MDA SR-152-3315 Batch 206 Clean Stockpile 7 4.63E-01 1.3714E-01 <MDA <MDA SR-152-3316 Batch 206 Clean Stockpile 8 4.89E-01 1.3881E-01 <MDA <MDA SR-152-3317 Batch 206 Clean Stockpile 9 4.94E-01 1.4790E-01 <MDA <MDA SR-152-3318 Batch 206 Clean Stockpile 10 6.02E-01 1.6320E-01 <MDA <MDA SR-152-3319 Batch 206 Clean Stockpile 11 4.31E-01 1.3358E-01 <MDA <MDA SR-152-3320 Batch 206 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-3321 Batch 206 Clean Stockpile 13 3.21E-01 1.1948E-01 <MDA <MDA SR-152-3322 Batch 206 Clean Stockpile 14 <MDA <MDA <MDA <MDA SR-152-3323 Batch 206 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-3324 Batch 206 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-3325 Batch 207 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-3326 Batch 207 Clean Stockpile 2 <MDA <MDA <MDA <MDA SR-152-3327 Batch 207 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-3328 Batch 207 Clean Stockpile 4 2.33E-01 1.0186E-01 <MDA <MDA SR-152-3329 Batch 207 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-3330 Batch 207 Clean Stockpile 6 4.89E-01 1.4638E-01 <MDA <MDA SR-152-3331 Batch 207 Clean Stockpile 7 2.83E-01 1.1327E-01 <MDA <MDA SR-152-3332 Batch 207 Clean Stockpile 8 1.99E-01 8.9130E-02 <MDA <MDA SR-152-3333 Batch 207 Clean Stockpile 9 3.83E-01 1.5594E-01 <MDA <MDA SR-152-3334 Batch 207 Clean Stockpile 10 2.80E-01 1.1237E-01 <MDA <MDA SR-152-3335 Batch 207 Clean Stockpile 11 3.02E-01 1.1855E-01 <MDA <MDA SR-152-3336 Batch 207 Clean Stockpile 12 3.16E-01 1.1216E-01 <MDA <MDA SR-152-3337 Batch 207 Clean Stockpile 13 2.13E-01 8.9094E-02 <MDA <MDA SR-152-3338 Batch 207 Clean Stockpile 14 3.73E-01 1.2302E-01 <MDA <MDA SR-152-3339 Batch 207 Clean Stockpile 15 2.40E-01 9.4526E-02 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 93 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3340 Batch 207 Clean Stockpile 16 1.59E-01 7.0558E-02 <MDA <MDA SR-152-3341 Batch 208 Clean Stockpile 1 2.97E-01 1.0870E-01 <MDA <MDA SR-152-3342 Batch 208 Clean Stockpile 2 3.24E-01 1.1495E-01 <MDA <MDA SR-152-3343 Batch 208 Clean Stockpile 3 3.04E-01 1.1337E-01 <MDA <MDA SR-152-3344 Batch 208 Clean Stockpile 4 1.40E-01 4.4910E-02 <MDA <MDA SR-152-3345 Batch 208 Clean Stockpile 5 3.12E-01 1.1606E-01 <MDA <MDA SR-152-3346 Batch 208 Clean Stockpile 6 2.51E-01 9.5188E-02 <MDA <MDA SR-152-3347 Batch 208 Clean Stockpile 7 <MDA <MDA <MDA <MDA SR-152-3348 Batch 208 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-3349 Batch 208 Clean Stockpile 9 1.69E-01 7.7539E-02 <MDA <MDA SR-152-3350 Batch 208 Clean Stockpile 10 <MDA <MDA <MDA <MDA SR-152-3351 Batch 208 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-3352 Batch 208 Clean Stockpile 12 <MDA <MDA <MDA <MDA SR-152-3353 Batch 208 Clean Stockpile 13 2.67E-01 9.9241E-02 <MDA <MDA SR-152-3354 Batch 208 Clean Stockpile 14 2.38E-01 9.5506E-02 <MDA <MDA SR-152-3355 Batch 208 Clean Stockpile 15 <MDA <MDA <MDA <MDA SR-152-3356 Batch 208 Clean Stockpile 16 <MDA <MDA <MDA <MDA SR-152-3357 Batch 209 Clean Stockpile 1 <MDA <MDA <MDA <MDA SR-152-3358 Batch 209 Clean Stockpile 2 1.80E-01 8.5163E-02 <MDA <MDA SR-152-3359 Batch 209 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-3360 Batch 209 Clean Stockpile 4 <MDA <MDA <MDA <MDA SR-152-3361 Batch 209 Clean Stockpile 5 2.30E-01 9.4027E-02 <MDA <MDA SR-152-3362 Batch 209 Clean Stockpile 6 2.21E-01 9.4234E-02 <MDA <MDA SR-152-3363 Batch 209 Clean Stockpile 7 2.87E-01 1.1056E-01 <MDA <MDA SR-152-3364 Batch 209 Clean Stockpile 8 3.40E-01 1.2446E-01 <MDA <MDA SR-152-3365 Batch 209 Clean Stockpile 9 3.65E-01 1.6406E-01 <MDA <MDA SR-152-3366 Batch 209 Clean Stockpile 10 3.47E-01 1.0866E-01 <MDA <MDA SR-152-3367 Batch 209 Clean Stockpile 11 3.78E-01 1.6836E-01 <MDA <MDA SR-152-3368 Batch 209 Clean Stockpile 12 3.02E-01 1.4274E-01 <MDA <MDA SR-152-3369 Batch 209 Clean Stockpile 13 4.14E-01 1.3857E-01 <MDA <MDA SR-152-3370 Batch 209 Clean Stockpile 14 3.63E-01 1.2479E-01 <MDA <MDA SR-152-3371 Batch 209 Clean Stockpile 15 4.0E-01 1.3745E-01 <MDA <MDA SR-152-3372 Batch 209 Clean Stockpile 16 2.69E-01 8.9822E-02 <MDA <MDA SR-152-3373 Batch 210 Clean Stockpile 1 3.59E-01 1.2176E-01 <MDA <MDA SR-152-3374 Batch 210 Clean Stockpile 2 3.40E-01 1.2250E-01 <MDA <MDA SR-152-3375 Batch 210 Clean Stockpile 3 <MDA <MDA <MDA <MDA SR-152-3376 Batch 210 Clean Stockpile 4 3.24E-01 1.3472E-01 <MDA <MDA

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix B Rev. 0, Page 94 of 94 ScanSort Clean Stockpile Sample Results Sample Cs-137 Cs-137 2 Co-60 Co-60 2 Sample # Location No.

pCi/g SR-152-3377 Batch 210 Clean Stockpile 5 2.0E-01 9.7109E-02 <MDA <MDA SR-152-3378 Batch 210 Clean Stockpile 6 2.78E-01 1.1348E-01 <MDA <MDA SR-152-3379 Batch 210 Clean Stockpile 7 2.86E-01 1.1017E-01 <MDA <MDA SR-152-3380 Batch 210 Clean Stockpile 8 2.99E-01 1.1538E-01 <MDA <MDA SR-152-3381 Batch 210 Clean Stockpile 9 3.50E-01 1.2425E-01 <MDA <MDA SR-152-3382 Batch 210 Clean Stockpile 10 2.30E-01 9.8404E-02 <MDA <MDA SR-152-3383 Batch 210 Clean Stockpile 11 <MDA <MDA <MDA <MDA SR-152-3384 Batch 210 Clean Stockpile 12 2.59E-01 1.0613E-01 <MDA <MDA SR-152-3385 Batch 210 Clean Stockpile 13 2.97E-01 1.1670E-01 <MDA <MDA SR-152-3386 Batch 210 Clean Stockpile 14 4.52E-01 1.4340E-01 <MDA <MDA 3.5831E-15 SR-152-3387 Batch 210 Clean Stockpile 01 1.2325E-01 <MDA <MDA SR-152-3388 Batch 210 Clean Stockpile 16 2.51E-01 1.0419E-01 <MDA <MDA SR-152-3389 Batch 211 Clean Stockpile 1 3.06E-01 1.1008E-01 <MDA <MDA SR-152-3390 Batch 211 Clean Stockpile 2 4.62E-01 1.5056E-01 <MDA <MDA SR-152-3391 Batch 211 Clean Stockpile 3 2.51E-01 1.2589E-01 <MDA <MDA SR-152-3392 Batch 211 Clean Stockpile 4 2.88E-01 1.1546E-01 <MDA <MDA SR-152-3393 Batch 211 Clean Stockpile 5 <MDA <MDA <MDA <MDA SR-152-3394 Batch 211 Clean Stockpile 6 3.11E-01 1.1802E-01 <MDA <MDA SR-152-3395 Batch 211 Clean Stockpile 7 4.60E-01 1.8101E-01 <MDA <MDA SR-152-3396 Batch 211 Clean Stockpile 8 <MDA <MDA <MDA <MDA SR-152-3397 Batch 211 Clean Stockpile 9 3.38E-01 1.1989E-01 <MDA <MDA SR-152-3398 Batch 211 Clean Stockpile 10 4.42E-01 1.4020E-01 <MDA <MDA SR-152-3399 Batch 211 Clean Stockpile 11 3.40E-01 1.2054E-01 <MDA <MDA SR-152-3400 Batch 211 Clean Stockpile 12 2.84E-01 1.1367E-01 <MDA <MDA SR-152-3401 Batch 211 Clean Stockpile 13 2.30E-01 1.0053E-01 <MDA <MDA SR-152-3402 Batch 211 Clean Stockpile 14 3.81E-01 1.3098E-01 <MDA <MDA SR-152-3403 Batch 211 Clean Stockpile 15 3.83E-01 1.2793E-01 <MDA <MDA SR-152-3404 Batch 211 Clean Stockpile 16 2.93E-01 1.1206E-01 <MDA <MDA

Plum Brook Reactor Facility Final Status Survey Report Attachment 18 Excavated and Backfill Materials Revision 0 Appendix C Soil Lift Survey Unit Maps and Tables Showing Measurement Locations

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 2 of 48 Index of Soil Lift Stations (OL-5) Survey Unit Maps and Tables of Coordinates Page Number Survey Unit Description Number of Pages OL-5-1 Soils Lift Station - Lift #1 4 1 OL-5-2 Soils Lift Station - Lift #2 5 1 OL-5-3 Soils Lift Station - Lift #3 6 1 OL-5-4 Soils Lift Station - Lift #4 7 1 OL-5-5 Soils Lift Station - Lift #5 8 1 OL-5-6 Soils Lift Station - Lift #6 9 1 OL-5-7 Soils Lift Station - Lift #7 10 1 OL-5-8 Soils Lift Station - Lift #8 11 1 OL-5-9 Soils Lift Station - Lift #9 12 1 OL-5-10 Soils Lift Station - Lift #10 13 1 OL-5-11 Soils Lift Station - Lift #11 14 1 OL-5-12 Soils Lift Station - Lift #12 15 1 OL-5-13 Soils Lift Station - Lift #13 16 1 OL-5-14 Soils Lift Station - Lift #14 17 1 OL-5-15 Soils Lift Station - Lift #15 18 1 OL-5-16 Soils Lift Station - Lift #16 19 1 OL-5-17 Soils Lift Station - Lift #17 20 1 OL-5-18 Soils Lift Station - Lift #18 21 1 OL-5-19 Soils Lift Station - Lift #19 22 1 OL-5-20 Soils Lift Station - Lift #20 23 1 OL-5-21 Soils Lift Station - Lift #21 24 1 OL-5-22 Soils Lift Station - Lift #22 25 1 OL-5-23 Soils Lift Station - Lift #23 26 1 OL-5-24 Soils Lift Station - Lift #24 27 1 OL-5-25 Soils Lift Station - Lift #25 28 1 OL-5-26 Soils Lift Station - Lift #26 29 1 OL-5-27 Soils Lift Station - Lift #27 30 1 OL-5-28 Soils Lift Station - Lift #28 31 1 OL-5-29 Soils Lift Station - Lift #29 32 1 OL-5-30 Soils Lift Station - Lift #30 33 1 OL-5-31 Soils Lift Station - Lift #31 34 1 OL-5-32 Soils Lift Station - Lift #32 35 1 OL-5-33 Soils Lift Station - Lift #33 36 1 OL-5-34 Soils Lift Station - Lift #34 37 1 OL-5-35 Soils Lift Station - Lift #35 38 1 OL-5-36 Soils Lift Station - Lift #36 39 1 OL-5-37 Soils Lift Station - Lift #37 40 1 OL-5-38 Soils Lift Station - Lift #38 41 1 OL-5-39 Soils Lift Station - Lift #39 42 1 OL-5-40 Soils Lift Station - Lift #40 43 1 OL-5-41 Soils Lift Station - Lift #41 44 1 OL-5-42 Area South of Lift Station - Section #1 45 1

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 3 of 48 Index of Soil Lift Stations (OL-5) Survey Unit Maps and Tables of Coordinates Page Number Survey Unit Description Number of Pages OL-5-43 Area South of Lift Station - Section #2 46 1 OL-5-44 Area South of Lift Station - Section #3 47 1 OL-5-45 Area South of Lift Station - Section #4 48 1

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 4 of 48 Survey Unit OL-5-1 Soil Lift #1 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-1 Area: Soil Lift #1 Measurement Locations X Coord Y Coord Label Type 20.7 7.5 SP-1 Systematic 54.7 7.5 SP-2 Systematic 88.7 7.5 SP-3 Systematic 3.7 37.0 SP-4 Systematic 37.7 37.0 SP-5 Systematic 71.7 37.0 SP-6 Systematic 20.7 66.4 SP-7 Systematic 54.7 66.4 SP-8 Systematic 88.7 66.4 SP-9 Systematic 3.7 95.8 SP-10 Systematic 37.7 95.8 SP-11 Systematic 71.7 95.8 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 5 of 48 Survey Unit OL-5-2 Soil Lift #2 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-2 Area: Soil Lift #2 Measurement Locations X Coord Y Coord Label Type 20.0 9.7 SP-1 Systematic 52.3 9.7 SP-2 Systematic 84.6 9.7 SP-3 Systematic 3.8 37.7 SP-4 Systematic 36.1 37.7 SP-5 Systematic 68.4 37.7 SP-6 Systematic 20.0 65.6 SP-7 Systematic 52.3 65.6 SP-8 Systematic 84.6 65.6 SP-9 Systematic 3.8 93.6 SP-10 Systematic 36.1 93.6 SP-11 Systematic 68.4 93.6 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 6 of 48 Survey Unit OL-5-3 Soil Lift #3 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-3 Area: Soil Lift #3 Measurement Locations X Coord Y Coord Label Type 4.3 7.7 SP-1 Systematic 38.3 7.7 SP-2 Systematic 72.3 7.7 SP-3 Systematic 21.3 37.2 SP-4 Systematic 55.3 37.2 SP-5 Systematic 89.3 37.2 SP-6 Systematic 4.3 66.6 SP-7 Systematic 38.3 66.6 SP-8 Systematic 72.3 66.6 SP-9 Systematic 21.3 96.1 SP-10 Systematic 55.3 96.1 SP-11 Systematic 89.3 96.1 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 7 of 48 Survey Unit OL-5-4 Soil Lift #4 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-4 Area: Soil Lift #4 Measurement Locations X Coord Y Coord Label Type 24.2. 9.3 SP-1 Systematic 58.2 9.3 SP-2 Systematic 92.2 9.3 SP-3 Systematic 7.2 38.7 SP-4 Systematic 41.2 38.7 SP-5 Systematic 75.2 38.7 SP-6 Systematic 24.2 68.2 SP-7 Systematic 58.2 68.2 SP-8 Systematic 92.2 68.2 SP-9 Systematic 7.2 97.6 SP-10 Systematic 41.2 97.6 SP-11 Systematic 75.2 97.6 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 8 of 48 Survey Unit OL-5-5 Soil Lift #5 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-5 Area: Soil Lift #5 Measurement Locations X Coord Y Coord Label Type 19 1 SP-1 Systematic 53 1 SP-2 Systematic 87 1 SP-3 Systematic 2 30 SP-4 Systematic 36 30 SP-5 Systematic 70 30 SP-6 Systematic 19 59 SP-7 Systematic 53 59 SP-8 Systematic 87 59 SP-9 Systematic 2 89 SP-10 Systematic 36 89 SP-11 Systematic 70 89 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 9 of 48 Survey Unit OL-5-6 Soil Lift #6 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-6 Area: Soil Lift #6 Measurement Locations X Coord Y Coord Label Type 20 4 SP-1 Systematic 54 4 SP-2 Systematic 88 4 SP-3 Systematic 3 33 SP-4 Systematic 37 33 SP-5 Systematic 71 33 SP-6 Systematic 20 63 SP-7 Systematic 54 63 SP-8 Systematic 88 63 SP-9 Systematic 3 92 SP-10 Systematic 37 92 SP-11 Systematic 71 92 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 10 of 48 Survey Unit OL-5-7 Soil Lift #7 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-7 Area: Soil Lift #7 Measurement Locations X Coord Y Coord Label Type 2.6 9.4 SP-1 Systematic 36.6 9.4 SP-2 Systematic 70.6 9.4 SP-3 Systematic 19.6 38.8 SP-4 Systematic 53.6 38.8 SP-5 Systematic 87.6 38.8 SP-6 Systematic 2.6 68.3 SP-7 Systematic 36.6 68.3 SP-8 Systematic 70.6 68.3 SP-9 Systematic 19.6 97.7 SP-10 Systematic 53.6 97.7 SP-11 Systematic 87.6 97.7 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 11 of 48 Survey Unit OL-5-8 Soil Lift #8 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-8 Area: Soil Lift #8 Measurement Locations X Coord Y Coord Label Type 19 8 SP-1 Systematic 53 8 SP-2 Systematic 87 8 SP-3 Systematic 2 38 SP-4 Systematic 36 38 SP-5 Systematic 70 38 SP-6 Systematic 19 67 SP-7 Systematic 53 67 SP-8 Systematic 87 67 SP-9 Systematic 2 97 SP-10 Systematic 36 97 SP-11 Systematic 70 97 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 12 of 48 Survey Unit OL-5-9 Soil Lift #9 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-9 Area: Soil Lift #9 Measurement Locations X Coord Y Coord Label Type 18.7 10.1 SP-1 Systematic 52.7 10.1 SP-2 Systematic 86.7 10.1 SP-3 Systematic 1.7 39.6 SP-4 Systematic 35.7 39.6 SP-5 Systematic 69.7 39.6 SP-6 Systematic 18.7 69.0 SP-7 Systematic 52.7 69.0 SP-8 Systematic 86.7 69.0 SP-9 Systematic 1.7 98.4 SP-10 Systematic 35.7 98.4 SP-11 Systematic 69.7 98.4 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 13 of 48 Survey Unit OL-5-10 Soil Lift #10 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-10 Area: Soil Lift #10 Measurement Locations X Coord Y Coord Label Type 19.0 9.7 SP-1 Systematic 53.0 9.7 SP-2 Systematic 87.0 9.7 SP-3 Systematic 2.0 39.2 SP-4 Systematic 36.0 39.2 SP-5 Systematic 70.0 39.2 SP-6 Systematic 19.0 68.6 SP-7 Systematic 53.0 68.6 SP-8 Systematic 87.0 68.6 SP-9 Systematic 2.0 98.1 SP-10 Systematic 36.0 98.1 SP-11 Systematic 70.0 98.1 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 14 of 48 Survey Unit OL-5-11 Soil Lift #11 SP-8 SP-9 SP-10 SP-11 SP-5 SP-6 SP-7 SP-1 SP-2 SP-3 SP-4 OL-5-11 Area: Soil Lift #11 Measurement Locations X Coord Y Coord Label Type 4.8 48.3 SP-1 Systematic 29.9 48.3 SP-2 Systematic 54.9 48.3 SP-3 Systematic 80.0 48.3 SP-4 Systematic 17.3 70.0 SP-5 Systematic 42.4 70.0 SP-6 Systematic 67.5 70.0 SP-7 Systematic 4.8 91.7 SP-8 Systematic 29.9 91.7 SP-9 Systematic 54.9 91.7 SP-10 Systematic 80.0 91.7 SP-11 Systematic 4.8 48.3 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 15 of 48 Survey Unit OL-5-12 Soil Lift #12 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-12 Area: Soil Lift #12 Measurement Locations X Coord Y Coord Label Type 3 8 SP-1 Systematic 37 8 SP-2 Systematic 71 8 SP-3 Systematic 20 38 SP-4 Systematic 54 38 SP-5 Systematic 88 38 SP-6 Systematic 3 67 SP-7 Systematic 37 67 SP-8 Systematic 71 67 SP-9 Systematic 20 97 SP-10 Systematic 54 97 SP-11 Systematic 88 97 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 16 of 48 Survey Unit OL-5-13 Soil Lift #13 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-13 Area: Soil Lift #13 Measurement Locations X Coord Y Coord Label Type 1 7 SP-1 Systematic 35 7 SP-2 Systematic 69 7 SP-3 Systematic 18 37 SP-4 Systematic 52 37 SP-5 Systematic 86 37 SP-6 Systematic 1 66 SP-7 Systematic 35 66 SP-8 Systematic 69 66 SP-9 Systematic 18 95 SP-10 Systematic 52 95 SP-11 Systematic 86 95 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 17 of 48 Survey Unit OL-5-14 Soil Lift #14 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-14 Area: Soil Lift #14 Measurement Locations X Coord Y Coord Label Type 3.8 8.9 SP-1 Systematic 37.8 8.9 SP-2 Systematic 71.8 8.9 SP-3 Systematic 20.8 38.3 SP-4 Systematic 54.8 38.3 SP-5 Systematic 88.8 38.3 SP-6 Systematic 3.8 67.7 SP-7 Systematic 37.8 67.7 SP-8 Systematic 71.8 67.7 SP-9 Systematic 20.8 97.2 SP-10 Systematic 54.8 97.2 SP-11 Systematic 88.8 97.2 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 18 of 48 Survey Unit OL-5-15 Soil Lift #15 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-15 Area: Soil Lift #15 Measurement Locations X Coord Y Coord Label Type 17.6 3.3 SP-1 Systematic 51.6 3.3 SP-2 Systematic 85.6 3.3 SP-3 Systematic 0.6 32.7 SP-4 Systematic 34.6 32.7 SP-5 Systematic 68.6 32.7 SP-6 Systematic 17.6 62.1 SP-7 Systematic 51.6 62.1 SP-8 Systematic 85.6 62.1 SP-9 Systematic 0.6 91.6 SP-10 Systematic 34.6 91.6 SP-11 Systematic 68.6 91.6 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 19 of 48 Survey Unit OL-5-16 Soil Lift #16 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-16 Area: Soil Lift #16 Measurement Locations X Coord Y Coord Label Type 19.7 9.4 SP-1 Systematic 53.7 9.4 SP-2 Systematic 87.7 9.4 SP-3 Systematic 2.7 38.8 SP-4 Systematic 36.7 38.8 SP-5 Systematic 70.7 38.8 SP-6 Systematic 19.7 68.3 SP-7 Systematic 53.7 68.3 SP-8 Systematic 87.7 68.3 SP-9 Systematic 2.7 97.7 SP-10 Systematic 36.7 97.7 SP-11 Systematic 70.7 97.7 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 20 of 48 Survey Unit OL-5-17 Soil Lift #17 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-17 Area: Soil Lift #17 Measurement Locations X Coord Y Coord Label Type 3 6 SP-1 Systematic 37 6 SP-2 Systematic 71 6 SP-3 Systematic 20 36 SP-4 Systematic 54 36 SP-5 Systematic 88 36 SP-6 Systematic 3 65 SP-7 Systematic 37 65 SP-8 Systematic 71 65 SP-9 Systematic 20 95 SP-10 Systematic 54 95 SP-11 Systematic 88 95 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 21 of 48 Survey Unit OL-5-18 Soil Lift #18 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-18 Area: Soil Lift #18 Measurement Locations X Coord Y Coord Label Type 21 4 SP-1 Systematic 55 4 SP-2 Systematic 89 4 SP-3 Systematic 4 34 SP-4 Systematic 38 34 SP-5 Systematic 72 34 SP-6 Systematic 21 63 SP-7 Systematic 55 63 SP-8 Systematic 89 63 SP-9 Systematic 4 93 SP-10 Systematic 38 93 SP-11 Systematic 21 4 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 22 of 48 Survey Unit OL-5-19 Soil Lift #19 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-19 Area: Soil Lift #19 Measurement Locations X Coord Y Coord Label Type 5 4 SP-1 Systematic 39 4 SP-2 Systematic 73 4 SP-3 Systematic 22 34 SP-4 Systematic 56 34 SP-5 Systematic 90 34 SP-6 Systematic 5 63 SP-7 Systematic 39 63 SP-8 Systematic 73 63 SP-9 Systematic 22 93 SP-10 Systematic 56 93 SP-11 Systematic 90 93 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 23 of 48 Survey Unit OL-5-20 Soil Lift #20 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-20 Area: Soil Lift #20 Measurement Locations X Coord Y Coord Label Type 3 6 SP-1 Systematic 37 6 SP-2 Systematic 71 6 SP-3 Systematic 20 35 SP-4 Systematic 54 35 SP-5 Systematic 88 35 SP-6 Systematic 3 65 SP-7 Systematic 37 65 SP-8 Systematic 71 65 SP-9 Systematic 20 94 SP-10 Systematic 54 94 SP-11 Systematic 88 94 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 24 of 48 Survey Unit OL-5-21 Soil Lift #21 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-21 Area: Soil Lift #21 Measurement Locations X Coord Y Coord Label Type 22 4 SP-1 Systematic 56 4 SP-2 Systematic 90 4 SP-3 Systematic 5 33 SP-4 Systematic 39 33 SP-5 Systematic 73 33 SP-6 Systematic 22 63 SP-7 Systematic 56 63 SP-8 Systematic 90 63 SP-9 Systematic 5 92 SP-10 Systematic 39 92 SP-11 Systematic 73 92 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 25 of 48 Survey Unit OL-5-22 Soil Lift #22 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-22 Area: Soil Lift #22 Measurement Locations X Coord Y Coord Label Type 3 4 SP-1 Systematic 37 4 SP-2 Systematic 71 4 SP-3 Systematic 20 33 SP-4 Systematic 54 33 SP-5 Systematic 88 33 SP-6 Systematic 3 63 SP-7 Systematic 37 63 SP-8 Systematic 71 63 SP-9 Systematic 20 92 SP-10 Systematic 54 92 SP-11 Systematic 88 92 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 26 of 48 Survey Unit OL-5-23 Soil Lift #23 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-23 Area: Soil Lift #23 Measurement Locations X Coord Y Coord Label Type 22.5 10.3 SP-1 Systematic 56.5 10.3 SP-2 Systematic 90.5 10.3 SP-3 Systematic 5.5 39.7 SP-4 Systematic 39.5 39.7 SP-5 Systematic 73.5 39.7 SP-6 Systematic 22.5 69.2 SP-7 Systematic 56.5 69.2 SP-8 Systematic 90.5 69.2 SP-9 Systematic 5.5 98.6 SP-10 Systematic 39.5 98.6 SP-11 Systematic 73.5 98.6 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 27 of 48 Survey Unit OL-5-24 Soil Lift #24 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-24 Area: Soil Lift #24 Measurement Locations X Coord Y Coord Label Type 21 13 SP-1 Systematic 53 13 SP-2 Systematic 86 13 SP-3 Systematic 5 41 SP-4 Systematic 37 41 SP-5 Systematic 70 41 SP-6 Systematic 21 69 SP-7 Systematic 53 69 SP-8 Systematic 86 69 SP-9 Systematic 5 97 SP-10 Systematic 37 97 SP-11 Systematic 70 97 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 28 of 48 Survey Unit OL-5-25 Soil Lift #25 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-25 Area: Soil Lift #25 Measurement Locations X Coord Y Coord Label Type 23 7 SP-1 Systematic 57 7 SP-2 Systematic 91 7 SP-3 Systematic 6 36 SP-4 Systematic 40 36 SP-5 Systematic 74 36 SP-6 Systematic 23 66 SP-7 Systematic 57 66 SP-8 Systematic 91 66 SP-9 Systematic 6 95 SP-10 Systematic 40 95 SP-11 Systematic 74 95 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 29 of 48 Survey Unit OL-5-26 Soil Lift #26 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-26 Area: Soil Lift #26 Measurement Locations X Coord Y Coord Label Type 5 3 SP-1 Systematic 39 3 SP-2 Systematic 72 3 SP-3 Systematic 22 32 SP-4 Systematic 56 32 SP-5 Systematic 89 32 SP-6 Systematic 5 62 SP-7 Systematic 39 62 SP-8 Systematic 72 62 SP-9 Systematic 22 91 SP-10 Systematic 56 91 SP-11 Systematic 89 91 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 30 of 48 Survey Unit OL-5-27 Soil Lift #27 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-27 Area: Soil Lift #27 Measurement Locations X Coord Y Coord Label Type 1 5 SP-1 Systematic 35 5 SP-2 Systematic 69 5 SP-3 Systematic 18 35 SP-4 Systematic 52 35 SP-5 Systematic 86 35 SP-6 Systematic 1 64 SP-7 Systematic 35 64 SP-8 Systematic 69 64 SP-9 Systematic 18 94 SP-10 Systematic 52 94 SP-11 Systematic 86 94 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 31 of 48 Survey Unit OL-5-28 Soil Lift #28 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-28 Area: Soil Lift #28 Measurement Locations X Coord Y Coord Label Type 4 6 SP-1 Systematic 38 6 SP-2 Systematic 72 6 SP-3 Systematic 21 35 SP-4 Systematic 55 35 SP-5 Systematic 89 35 SP-6 Systematic 4 65 SP-7 Systematic 38 65 SP-8 Systematic 72 65 SP-9 Systematic 21 94 SP-10 Systematic 55 94 SP-11 Systematic 89 94 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 32 of 48 Survey Unit OL-5-29 Soil Lift #29 SP-11 SP-12 SP-9 SP-10 SP-7 SP-8 SP-5 SP-6 SP-3 SP-4 SP-1 SP-2 OL-5-29 Area: Soil Lift #29 Measurement Locations X Coord Y Coord Label Type 20 0 SP-1 Systematic 42 0 SP-2 Systematic 9 20 SP-3 Systematic 31 20 SP-4 Systematic 20 39 SP-5 Systematic 42 39 SP-6 Systematic 9 58 SP-7 Systematic 31 58 SP-8 Systematic 20 77 SP-9 Systematic 42 77 SP-10 Systematic 9 97 SP-11 Systematic 31 97 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 33 of 48 Survey Unit OL-5-30 Soil Lift #30 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-30 Area: Soil Lift #30 Measurement Locations X Coord Y Coord Label Type 20 6 SP-1 Systematic 54 6 SP-2 Systematic 88 6 SP-3 Systematic 3 36 SP-4 Systematic 37 36 SP-5 Systematic 71 36 SP-6 Systematic 20 65 SP-7 Systematic 54 65 SP-8 Systematic 88 65 SP-9 Systematic 3 95 SP-10 Systematic 37 95 SP-11 Systematic 71 95 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 34 of 48 Survey Unit OL-5-31 Soil Lift #31 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-31 Area: Soil Lift #31 Measurement Locations X Coord Y Coord Label Type 2 7 SP-1 Systematic 36 7 SP-2 Systematic 70 7 SP-3 Systematic 19 36 SP-4 Systematic 53 36 SP-5 Systematic 87 36 SP-6 Systematic 2 66 SP-7 Systematic 36 66 SP-8 Systematic 70 66 SP-9 Systematic 19 95 SP-10 Systematic 53 95 SP-11 Systematic 87 95 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 35 of 48 Survey Unit OL-5-32 Soil Lift #32 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-32 Area: Soil Lift #32 Measurement Locations X Coord Y Coord Label Type 21 4 SP-1 Systematic 55 4 SP-2 Systematic 89 4 SP-3 Systematic 4 34 SP-4 Systematic 38 34 SP-5 Systematic 72 34 SP-6 Systematic 21 63 SP-7 Systematic 55 63 SP-8 Systematic 89 63 SP-9 Systematic 4 93 SP-10 Systematic 38 93 SP-11 Systematic 72 93 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 36 of 48 Survey Unit OL-5-33 Soil Lift #33 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-33 Area: Soil Lift #33 Measurement Locations X Coord Y Coord Label Type 7 3 SP-1 Systematic 41 3 SP-2 Systematic 75 3 SP-3 Systematic 24 32 SP-4 Systematic 58 32 SP-5 Systematic 92 32 SP-6 Systematic 7 62 SP-7 Systematic 41 62 SP-8 Systematic 75 62 SP-9 Systematic 24 91 SP-10 Systematic 58 91 SP-11 Systematic 92 91 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 37 of 48 Survey Unit OL-5-34 Soil Lift #34 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-34 Area: Soil Lift #34 Measurement Locations X Coord Y Coord Label Type 18 10 SP-1 Systematic 52 10 SP-2 Systematic 86 10 SP-3 Systematic 1 40 SP-4 Systematic 35 40 SP-5 Systematic 69 40 SP-6 Systematic 18 69 SP-7 Systematic 52 69 SP-8 Systematic 86 69 SP-9 Systematic 1 99 SP-10 Systematic 35 99 SP-11 Systematic 69 99 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 38 of 48 Survey Unit OL-5-35 Soil Lift #35 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-35 Area: Soil Lift #35 Measurement Locations X Coord Y Coord Label Type 21 11 SP-1 Systematic 55 11 SP-2 Systematic 89 11 SP-3 Systematic 4 41 SP-4 Systematic 38 41 SP-5 Systematic 72 41 SP-6 Systematic 21 70 SP-7 Systematic 55 70 SP-8 Systematic 89 70 SP-9 Systematic 4 100 SP-10 Systematic 38 100 SP-11 Systematic 72 100 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 39 of 48 Survey Unit OL-5-36 Soil Lift #36 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-36 Area: Soil Lift #36 Measurement Locations X Coord Y Coord Label Type 23 1 SP-1 Systematic 57 1 SP-2 Systematic 91 1 SP-3 Systematic 6 30 SP-4 Systematic 40 30 SP-5 Systematic 74 30 SP-6 Systematic 23 60 SP-7 Systematic 57 60 SP-8 Systematic 91 60 SP-9 Systematic 6 89 SP-10 Systematic 40 89 SP-11 Systematic 74 89 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 40 of 48 Survey Unit OL-5-37 Soil Lift #37 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-37 Area: Soil Lift #37 Measurement Locations X Coord Y Coord Label Type 24 10 SP-1 Systematic 58 10 SP-2 Systematic 92 10 SP-3 Systematic 7 40 SP-4 Systematic 41 40 SP-5 Systematic 75 40 SP-6 Systematic 24 69 SP-7 Systematic 58 69 SP-8 Systematic 92 69 SP-9 Systematic 7 99 SP-10 Systematic 41 99 SP-11 Systematic 75 99 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 41 of 48 Survey Unit OL-5-38 Soil Lift #38 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-38 Area: Soil Lift #38 Measurement Locations X Coord Y Coord Label Type 24 1 SP-1 Systematic 58 1 SP-2 Systematic 92 1 SP-3 Systematic 7 31 SP-4 Systematic 41 31 SP-5 Systematic 75 31 SP-6 Systematic 24 60 SP-7 Systematic 58 60 SP-8 Systematic 92 60 SP-9 Systematic 7 90 SP-10 Systematic 41 90 SP-11 Systematic 75 90 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 42 of 48 Survey Unit OL-5-39 Soil Lift #39 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-39 Area: Soil Lift #39 Measurement Locations X Coord Y Coord Label Type 5 6 SP-1 Systematic 39 6 SP-2 Systematic 73 6 SP-3 Systematic 22 36 SP-4 Systematic 56 36 SP-5 Systematic 90 36 SP-6 Systematic 5 65 SP-7 Systematic 39 65 SP-8 Systematic 73 65 SP-9 Systematic 22 95 SP-10 Systematic 56 95 SP-11 Systematic 90 95 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 43 of 48 Survey Unit OL-5-40 Soil Lift #40 SP-10 SP-11 SP-12 SP-7 SP-8 SP-9 SP-4 SP-5 SP-6 SP-1 SP-2 SP-3 OL-5-40 Area: Soil Lift #40 Measurement Locations X Coord Y Coord Label Type 6 0 SP-1 Systematic 40 0 SP-2 Systematic 74 0 SP-3 Systematic 23 30 SP-4 Systematic 57 30 SP-5 Systematic 91 30 SP-6 Systematic 6 59 SP-7 Systematic 40 59 SP-8 Systematic 74 59 SP-9 Systematic 23 89 SP-10 Systematic 57 89 SP-11 Systematic 91 89 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 44 of 48 Survey Unit OL-5-41 Soil Lift #41 SP-11 SP-12 SP-8 SP-9 SP-10 SP-6 SP-7 SP-3 SP-4 SP-5 SP-1 SP-2 OL-5-41 Area: Soil Lift #41 Measurement Locations X Coord Y Coord Label Type 14 13 SP-1 Systematic 37 13 SP-2 Systematic 2 34 SP-3 Systematic 26 34 SP-4 Systematic 49 34 SP-5 Systematic 14 55 SP-6 Systematic 37 55 SP-7 Systematic 2 75 SP-8 Systematic 26 75 SP-9 Systematic 49 75 SP-10 Systematic 14 96 SP-11 Systematic 37 96 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 45 of 48 Survey Unit OL-5-42 Area South of Lift Stations SP-8 SP-9 SP-10 SP-11 SP-4 SP-5 SP-6 SP-7 SP-1 SP-2 SP-3 OL-5-42 Area: Area South of Lift Stations Measurement Locations X Coord Y Coord Label Type 72 -91 SP-1 Systematic 111 -91 SP-2 Systematic 151 -91 SP-3 Systematic 12 -57 SP-4 Systematic 52 -57 SP-5 Systematic 92 -57 SP-6 Systematic 131 -57 SP-7 Systematic 32 -23 SP-8 Systematic 72 -23 SP-9 Systematic 111 -23 SP-10 Systematic 151 -23 SP-11 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 46 of 48 Survey Unit OL-5-43 Area South of Lift Stations SP-11 SP-6 SP-7 SP-8 SP-9 SP-10 SP-1 SP-2 SP-3 SP-4 SP-5 OL-5-43 Area: Area South of Lift Stations Measurement Locations X Coord Y Coord Label Type 24 28 SP-1 Systematic 69 28 SP-2 Systematic 115 28 SP-3 Systematic 160 28 SP-4 Systematic 205 28 SP-5 Systematic 2 67 SP-6 Systematic 47 67 SP-7 Systematic 92 67 SP-8 Systematic 137 67 SP-9 Systematic 182 67 SP-10 Systematic 24 106 SP-11 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 47 of 48 Survey Unit OL-5-44 Area South of Lift Stations SP-9 SP-10 SP-11 SP-12 SP-5 SP-6 SP-7 SP-8 SP-1 SP-2 SP-3 SP-4 OL-5-44 Area: Soil Lift #44 Measurement Locations X Coord Y Coord Label Type 29 1 SP-1 Systematic 78 1 SP-2 Systematic 128 1 SP-3 Systematic 177 1 SP-4 Systematic 4 44 SP-5 Systematic 53 44 SP-6 Systematic 103 44 SP-7 Systematic 152 44 SP-8 Systematic

-71 87 SP-9 Systematic

-21 87 SP-10 Systematic 29 87 SP-11 Systematic 78 87 SP-12 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix C Rev. 0, Page 48 of 48 Survey Unit OL-5-45 Area South of Lift Stations SP-8 SP-9 SP-10 SP-11 SP-5 SP-6 SP-7 SP-1 SP-2 SP-3 SP-4 OL-5-45 Area: Soil Lift #45 Measurement Locations X Coord Y Coord Label Type 27 6 SP-1 Systematic 82 6 SP-2 Systematic 137 6 SP-3 Systematic 192 6 SP-4 Systematic 54 53 SP-5 Systematic 109 53 SP-6 Systematic 164 53 SP-7 Systematic 27 101 SP-8 Systematic 82 101 SP-9 Systematic 137 101 SP-10 Systematic 192 101 SP-11 Systematic All sample points are measured from the southwest corner of the survey unit.

Plum Brook Reactor Facility Final Status Survey Report Attachment 18 Excavated and Backfill Materials Revision 0 Appendix D Soil Lift Survey Sample Results

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 2 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-1 SP-1 < MDA < MDA < MDA < MDA 9.49E-02 1.11E-01 OL-5-1 SP-2 < MDA < MDA < MDA < MDA 7.47E-02 1.20E-01 OL-5-1 SP-3 < MDA < MDA < MDA < MDA 1.23E-01 1.25E-01 OL-5-1 SP-4 < MDA < MDA < MDA < MDA 6.89E-02 1.10E-01 OL-5-1 SP-5 1.67E-01 7.69E-02 < MDA < MDA 1.04E-01 OL-5-1 SP-6 < MDA < MDA < MDA < MDA 1.46E-01 1.29E-01 OL-5-1 SP-7 < MDA < MDA < MDA < MDA 7.17E-02 1.15E-01 OL-5-1 SP-8 < MDA < MDA < MDA < MDA 7.42E-02 1.17E-01 OL-5-1 SP-9 < MDA < MDA < MDA < MDA 1.92E-01 1.17E-01 OL-5-1 SP-10 < MDA < MDA < MDA < MDA 6.65E-02 1.05E-01 OL-5-1 SP-11 < MDA < MDA < MDA < MDA 6.04E-02 9.68E-02 OL-5-1 SP-12 < MDA < MDA < MDA < MDA 7.71E-02 1.22E-01 OL-5-2 SP-1 < MDA < MDA < MDA < MDA 7.73E-02 1.24E-01 OL-5-2 SP-2 2.52E-01 1.10E-01 < MDA < MDA 1.39E-01 OL-5-2 SP-3 3.77E-01 1.34E-01 < MDA < MDA 1.39E-01 OL-5-2 SP-4 < MDA < MDA < MDA < MDA 8.19E-02 1.29E-01 OL-5-2 SP-5 3.94E-01 1.34E-01 < MDA < MDA 1.33E-01 OL-5-2 SP-6 3.69E-01 1.31E-01 < MDA < MDA 1.36E-01 OL-5-2 SP-7 4.08E-01 1.32E-01 < MDA < MDA 1.02E-01 OL-5-2 SP-8 2.59E-01 1.14E-01 < MDA < MDA 1.15E-01 OL-5-2 SP-9 2.54E-01 1.08E-01 < MDA < MDA 1.36E-01 OL-5-2 SP-10 1.84E-01 9.10E-02 < MDA < MDA 9.28E-02 OL-5-2 SP-11 2.44E-01 1.07E-01 < MDA < MDA 1.37E-01 OL-5-2 SP-12 < MDA < MDA < MDA < MDA 1.11E-01 1.36E-01 OL-5-3 SP-1 < MDA < MDA < MDA < MDA 8.27E-02 1.32E-01 OL-5-3 SP-2 < MDA < MDA < MDA < MDA 1.59E-01 1.18E-01 OL-5-3 SP-3 3.14E-01 1.15E-01 < MDA < MDA 1.24E-01 OL-5-3 SP-4 2.02E-01 9.52E-02 < MDA < MDA 1.32E-01 OL-5-3 SP-5 < MDA < MDA < MDA < MDA 1.26E-01 1.32E-01 OL-5-3 SP-6 2.05E-01 9.20E-02 < MDA < MDA 1.21E-01 OL-5-3 SP-7 < MDA < MDA < MDA < MDA 9.30E-02 1.25E-01 OL-5-3 SP-8 3.44E-01 1.22E-01 < MDA < MDA 1.27E-01 OL-5-3 SP-9 < MDA < MDA < MDA < MDA 8.93E-02 1.42E-01 OL-5-3 SP-10 < MDA < MDA < MDA < MDA 8.85E-02 1.42E-01 OL-5-3 SP-11 < MDA < MDA < MDA < MDA 8.71E-02 1.39E-01 OL-5-3 SP-12 < MDA < MDA < MDA < MDA 1.86E-01 1.18E-01 OL-5-4 SP-1 3.73E-01 1.26E-01 < MDA < MDA 1.26E-01 OL-5-4 SP-2 4.19E-01 1.40E-01 < MDA < MDA 1.35E-01 OL-5-4 SP-3 4.31E-01 1.35E-01 < MDA < MDA 1.23E-01 OL-5-4 SP-4 2.99E-01 1.15E-01 < MDA < MDA 1.31E-01 OL-5-4 SP-5 2.97E-01 1.17E-01 < MDA < MDA 1.32E-01 OL-5-4 SP-6 3.15E-01 1.22E-01 < MDA < MDA 1.37E-01 OL-5-4 SP-7 < MDA < MDA < MDA < MDA 7.51E-02 1.20E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 3 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-4 SP-8 4.35E-01 1.36E-01 < MDA < MDA 1.23E-01 OL-5-4 SP-9 3.38E-01 1.18E-01 < MDA < MDA 1.21E-01 OL-5-4 SP-10 3.96E-01 1.31E-01 < MDA < MDA 1.24E-01 OL-5-4 SP-11 2.90E-01 1.14E-01 < MDA < MDA 1.31E-01 OL-5-4 SP-12 3.12E-01 1.37E-01 < MDA < MDA 1.23E-01 OL-5-5 SP-1 5.45E-01 1.52E-01 < MDA < MDA 1.24E-01 OL-5-5 SP-2 3.79E-01 1.42E-01 < MDA < MDA 1.20E-01 OL-5-5 SP-3 4.02E-01 1.28E-01 < MDA < MDA 1.19E-01 OL-5-5 SP-4 4.85E-01 1.50E-01 < MDA < MDA 1.49E-01 OL-5-5 SP-5 2.87E-01 1.16E-01 < MDA < MDA 1.10E-01 OL-5-5 SP-6 3.58E-01 1.20E-01 < MDA < MDA 1.18E-01 OL-5-5 SP-7 3.89E-01 1.28E-01 < MDA < MDA 1.23E-01 OL-5-5 SP-8 4.10E-01 1.32E-01 < MDA < MDA 1.24E-01 OL-5-5 SP-9 2.79E-01 1.23E-01 < MDA < MDA 1.23E-01 OL-5-5 SP-10 3.70E-01 1.22E-01 < MDA < MDA 1.18E-01 OL-5-5 SP-11 4.27E-01 1.37E-01 < MDA < MDA 1.29E-01 OL-5-5 SP-12 2.67E-01 7.51E-02 < MDA < MDA 5.02E-02 OL-5-6, SP-1 5.22E-01 1.40E-01 <MDA <MDA 1.10E-01 OL-5-6, SP-2 4.84E-01 1.47E-01 <MDA <MDA 1.29E-01 OL-5-6, SP-3 4.66E-01 1.39E-01 <MDA <MDA 1.22E-01 OL-5-6, SP-4 4.37E-01 1.66E-01 <MDA <MDA 1.13E-01 OL-5-6, SP-5 4.36E-01 1.37E-01 <MDA <MDA 1.26E-01 OL-5-6, SP-6 5.92E-01 1.59E-01 <MDA <MDA 1.25E-01 OL-5-6, SP-7 3.40E-01 1.19E-01 <MDA <MDA 1.21E-01 OL-5-6, SP-8 4.21E-01 1.37E-01 <MDA <MDA 1.31E-01 OL-5-6, SP-9 3.15E-01 1.17E-01 <MDA <MDA 1.40E-01 OL-5-6, SP-10 4.06E-01 1.29E-01 <MDA <MDA 1.20E-01 OL-5-6, SP-11 3.90E-01 1.31E-01 <MDA <MDA 1.28E-01 OL-5-6, SP-12 3.65E-01 1.30E-01 <MDA <MDA 1.10E-01 OL-5-6, IM-1 2.93E+00 3.27E-01 <MDA <MDA 1.01E-01 OL-5-7, SP-1 4.89E-01 1.46E-01 <MDA <MDA 1.28E-01 OL-5-7, SP-2 3.28E-01 1.27E-01 <MDA <MDA 1.41E-01 OL-5-7, SP-3 <MDA <MDA <MDA <MDA 1.32E-01 1.29E-01 OL-5-7, SP-4 4.85E-01 1.36E-01 <MDA <MDA 1.12E-01 OL-5-7, SP-5 <MDA <MDA <MDA <MDA 8.22E-02 1.29E-01 OL-5-7, SP-6 <MDA <MDA <MDA <MDA 6.42E-02 1.02E-01 OL-5-7, SP-7 2.19E-01 1.00E-01 <MDA <MDA 1.36E-01 OL-5-7, SP-8 <MDA <MDA <MDA <MDA 1.47E-01 1.41E-01 OL-5-7, SP-9 <MDA <MDA <MDA <MDA 8.51E-02 1.36E-01 OL-5-7, SP-10 <MDA <MDA <MDA <MDA 8.46E-02 1.33E-01 OL-5-7, SP-11 <MDA <MDA <MDA <MDA 1.04E-01 1.40E-01 OL-5-7, SP-12 <MDA <MDA <MDA <MDA 1.10E-01 1.26E-01 OL-5-8, SP-1 3.72E-01 1.23E-01 <MDA <MDA 1.19E-01 OL-5-8, SP-2 2.61E-01 1.09E-01 <MDA <MDA 1.32E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 4 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-8, SP-3 3.00E-01 1.16E-01 <MDA <MDA 1.31E-01 OL-5-8, SP-4 4.80E-01 1.39E-01 <MDA <MDA 1.18E-01 OL-5-8, SP-5 3.96E-01 1.56E-01 <MDA <MDA 1.35E-01 OL-5-8, SP-6 3.40E-01 1.27E-01 <MDA <MDA 1.38E-01 OL-5-8, SP-7 5.56E-01 1.53E-01 <MDA <MDA 1.24E-01 OL-5-8, SP-8 3.66E-01 1.32E-01 <MDA <MDA 1.37E-01 OL-5-8, SP-9 5.21E-01 1.63E-01 <MDA <MDA 1.26E-01 OL-5-8, SP-10 3.70E-01 1.24E-01 <MDA <MDA 1.21E-01 OL-5-8, SP-11 4.16E-01 1.41E-01 <MDA <MDA 1.38E-01 OL-5-8, SP-12 2.88E-01 1.37E-01 <MDA <MDA 1.30E-01 OL-5-9, SP-1 <MDA <MDA <MDA <MDA 7.05E-02 1.13E-01 OL-5-9, SP-2 <MDA <MDA <MDA <MDA 7.43E-02 1.17E-01 OL-5-9, SP-3 <MDA <MDA <MDA <MDA 9.18E-02 1.24E-01 OL-5-9, SP-4 <MDA <MDA <MDA <MDA 6.43E-02 1.03E-01 OL-5-9, SP-5 <MDA <MDA <MDA <MDA 1.00E-01 1.25E-01 OL-5-9, SP-6 <MDA <MDA <MDA <MDA 6.52E-02 1.04E-01 OL-5-9, SP-7 <MDA <MDA <MDA <MDA 6.49E-02 1.04E-01 OL-5-9, SP-8 <MDA <MDA <MDA <MDA 7.07E-02 1.11E-01 OL-5-9, SP-9 <MDA <MDA <MDA <MDA 6.96E-02 1.11E-01 OL-5-9, SP-10 2.43E-01 9.21E-02 <MDA <MDA 1.03E-01 OL-5-9, SP-11 <MDA <MDA <MDA <MDA 8.09E-02 1.16E-01 OL-5-9, SP-12 <MDA <MDA <MDA <MDA 6.61E-02 1.05E-01 OL-5-10, SP-1 <MDA <MDA <MDA <MDA 8.31E-02 1.33E-01 OL-5-10, SP-2 2.14E-01 7.60E-02 <MDA <MDA 7.77E-02 OL-5-10, SP-3 <MDA <MDA <MDA <MDA 1.27E-01 1.14E-01 OL-5-10, SP-4 <MDA <MDA <MDA <MDA 7.64E-02 1.22E-01 OL-5-10, SP-5 <MDA <MDA <MDA <MDA 9.46E-02 1.49E-01 OL-5-10, SP-6 <MDA <MDA <MDA <MDA 8.08E-02 1.29E-01 OL-5-10, SP-7 <MDA <MDA <MDA <MDA 8.80E-02 1.34E-01 OL-5-10, SP-8 <MDA <MDA <MDA <MDA 9.58E-02 1.16E-01 OL-5-10, SP-9 <MDA <MDA <MDA <MDA 1.16E-01 1.47E-01 OL-5-10, SP-10 2.10E-01 9.18E-02 <MDA <MDA 1.18E-01 OL-5-10, SP-11 <MDA <MDA <MDA <MDA 8.21E-02 1.29E-01 OL-5-10, SP-12 <MDA <MDA <MDA <MDA 1.30E-01 1.32E-01 OL-5-11, SP-1 <MDA <MDA <MDA <MDA 8.98E-02 1.03E-01 OL-5-11, SP-2 <MDA <MDA <MDA <MDA 6.62E-02 1.04E-01 OL-5-11, SP-3 <MDA <MDA <MDA <MDA 9.59E-02 1.09E-01 OL-5-11, SP-4 <MDA <MDA <MDA <MDA 6.74E-02 1.08E-01 OL-5-11, SP-5 6.42E-01 1.88E-01 <MDA <MDA 1.25E-01 OL-5-11, SP-6 <MDA <MDA <MDA <MDA 7.02E-02 1.12E-01 OL-5-11, SP-7 <MDA <MDA <MDA <MDA 7.96E-02 1.25E-01 OL-5-11, SP-8 <MDA <MDA <MDA <MDA 7.47E-02 1.19E-01 OL-5-11, SP-9 <MDA <MDA <MDA <MDA 6.84E-02 1.10E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 5 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-11, SP-10 <MDA <MDA <MDA <MDA 6.78E-02 1.07E-01 OL-5-11, SP-11 1.60E-01 7.79E-02 <MDA <MDA 1.11E-01 OL-5-12, SP-1 2.48E-01 9.92E-02 <MDA <MDA 1.17E-01 OL-5-12, SP-2 2.76E-01 1.15E-01 <MDA <MDA 1.39E-01 OL-5-12, SP-3 <MDA <MDA <MDA <MDA 7.90E-02 1.27E-01 OL-5-12, SP-4 2.84E-01 1.06E-01 <MDA <MDA 1.14E-01 OL-5-12, SP-5 2.29E-01 1.05E-01 <MDA <MDA 1.42E-01 OL-5-12, SP-6 2.11E-01 9.23E-02 <MDA <MDA 1.19E-01 OL-5-12, SP-7 3.22E-01 9.53E-02 <MDA <MDA 8.13E-02 OL-5-12, SP-8 <MDA <MDA <MDA <MDA 8.66E-02 1.38E-01 OL-5-12, SP-9 <MDA <MDA <MDA <MDA 7.00E-02 1.12E-01 OL-5-12, SP-10 <MDA <MDA <MDA <MDA 1.25E-01 1.35E-01 OL-5-12, SP-11 <MDA <MDA <MDA <MDA 8.03E-02 1.28E-01 OL-5-12, SP-12 <MDA <MDA <MDA <MDA 8.87E-02 1.40E-01 OL-5-13, SP-1 <MDA <MDA <MDA <MDA 7.39E-02 1.18E-01 OL-5-13, SP-2 <MDA <MDA <MDA <MDA 8.04E-02 1.28E-01 OL-5-13, SP-3 <MDA <MDA <MDA <MDA 1.78E-01 1.01E-01 OL-5-13, SP-4 <MDA <MDA <MDA <MDA 1.12E-01 1.23E-01 OL-5-13, SP-5 <MDA <MDA <MDA <MDA 7.58E-02 1.21E-01 OL-5-13, SP-6 <MDA <MDA <MDA <MDA 9.33E-02 1.18E-01 OL-5-13, SP-7 <MDA <MDA <MDA <MDA 7.46E-02 1.19E-01 OL-5-13, SP-8 <MDA <MDA <MDA <MDA 7.01E-02 1.12E-01 OL-5-13, SP-9 <MDA <MDA <MDA <MDA 7.02E-02 1.12E-01 OL-5-13, SP-10 <MDA <MDA <MDA <MDA 8.04E-02 1.28E-01 OL-5-13, SP-11 <MDA <MDA <MDA <MDA 9.01E-02 1.20E-01 OL-5-13, SP-12 <MDA <MDA <MDA <MDA 1.13E-01 1.16E-01 OL-5-14, SP-1 <MDA <MDA <MDA <MDA 9.92E-02 1.11E-01 OL-5-14, SP-2 <MDA <MDA <MDA <MDA 1.20E-01 1.05E-01 OL-5-14, SP-3 <MDA <MDA <MDA <MDA 1.97E-01 1.16E-01 OL-5-14, SP-4 2.43E-01 9.17E-02 <MDA <MDA 9.91E-02 OL-5-14, SP-5 3.04E-01 1.23E-01 <MDA <MDA 1.16E-01 OL-5-14, SP-6 2.92E-01 1.25E-01 <MDA <MDA 1.19E-01 OL-5-14, SP-7 <MDA <MDA <MDA <MDA 1.16E-01 1.15E-01 OL-5-14, SP-8 <MDA <MDA <MDA <MDA 7.53E-02 1.19E-01 OL-5-14, SP-9 <MDA <MDA <MDA <MDA 1.11E-01 1.09E-01 OL-5-14, SP-10 2.62E-01 1.04E-01 <MDA <MDA 1.17E-01 OL-5-14, SP-11 3.22E-01 1.12E-01 <MDA <MDA 1.12E-01 OL-5-14, SP-12 2.76E-01 1.17E-01 <MDA <MDA 1.18E-01 OL-5-15, SP-1 <MDA <MDA <MDA <MDA 9.34E-02 1.15E-01 OL-5-15, SP-2 <MDA <MDA <MDA <MDA 8.26E-02 1.17E-01 OL-5-15, SP-3 <MDA <MDA <MDA <MDA 1.21E-01 1.39E-01 OL-5-15, SP-4 2.27E-01 1.06E-01 <MDA <MDA 1.20E-01 OL-5-15, SP-5 <MDA <MDA <MDA <MDA 7.03E-02 1.11E-01 OL-5-15, SP-6 <MDA <MDA <MDA <MDA 1.06E-01 1.05E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 6 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-15, SP-7 <MDA <MDA <MDA <MDA 8.74E-02 1.38E-01 OL-5-15, SP-8 <MDA <MDA <MDA <MDA 1.60E-01 1.33E-01 OL-5-15, SP-9 2.80E-01 1.07E-01 <MDA <MDA 1.18E-01 OL-5-15, SP-10 <MDA <MDA <MDA <MDA 9.79E-02 1.38E-01 OL-5-15, SP-11 2.62E-01 1.08E-01 <MDA <MDA 1.29E-01 OL-5-15, SP-12 <MDA <MDA <MDA <MDA 1.54E-01 1.43E-01 OL-5-16, SP-1 <MDA <MDA <MDA <MDA 7.70E-02 1.01E-01 OL-5-16, SP-2 <MDA <MDA <MDA <MDA 8.43E-02 1.11E-01 OL-5-16, SP-3 <MDA <MDA <MDA <MDA 8.66E-02 1.25E-01 OL-5-16, SP-4 <MDA <MDA <MDA <MDA 7.86E-02 1.26E-01 OL-5-16, SP-5 <MDA <MDA <MDA <MDA 7.96E-02 1.03E-01 OL-5-16, SP-6 <MDA <MDA <MDA <MDA 8.83E-02 1.02E-01 OL-5-16, SP-7 <MDA <MDA <MDA <MDA 7.44E-02 1.04E-01 OL-5-16, SP-8 <MDA <MDA <MDA <MDA 1.15E-01 1.11E-01 OL-5-16, SP-9 <MDA <MDA <MDA <MDA 7.22E-02 1.14E-01 OL-5-16, SP-10 <MDA <MDA <MDA <MDA 7.67E-02 1.05E-01 OL-5-16, SP-11 <MDA <MDA <MDA <MDA 7.36E-02 1.16E-01 OL-5-16, SP-12 <MDA <MDA <MDA <MDA 9.15E-02 1.02E-01 OL-5-17, SP-1 <MDA <MDA <MDA <MDA 7.93E-02 1.25E-01 OL-5-17, SP-2 <MDA <MDA <MDA <MDA 1.15E-01 1.46E-01 OL-5-17, SP-3 <MDA <MDA <MDA <MDA 8.98E-02 1.18E-01 OL-5-17, SP-4 <MDA <MDA <MDA <MDA 8.32E-02 1.31E-01 OL-5-17, SP-5 <MDA <MDA <MDA <MDA 1.13E-01 1.27E-01 OL-5-17, SP-6 <MDA <MDA <MDA <MDA 7.19E-02 1.15E-01 OL-5-17, SP-7 1.89E-01 9.00E-02 <MDA <MDA 1.22E-01 OL-5-17, SP-8 <MDA <MDA <MDA <MDA 1.22E-01 1.20E-01 OL-5-17, SP-9 <MDA <MDA <MDA <MDA 1.05E-01 1.28E-01 OL-5-17, SP-10 <MDA <MDA <MDA <MDA 9.82E-02 1.17E-01 OL-5-17, SP-11 <MDA <MDA <MDA <MDA 7.58E-02 1.19E-01 OL-5-17, SP-12 <MDA <MDA <MDA <MDA 8.87E-02 1.17E-01 OL-5-18, SP-1 <MDA <MDA <MDA <MDA 1.09E-01 1.28E-01 OL-5-18, SP-2 7.56E-01 1.70E-01 <MDA <MDA 1.04E-01 OL-5-18, SP-3 2.52E-01 1.18E-01 <MDA <MDA 1.09E-01 OL-5-18, SP-4 2.93E-01 1.38E-01 <MDA <MDA 1.20E-01 OL-5-18, SP-5 <MDA <MDA <MDA <MDA 1.28E-01 1.02E-01 OL-5-18, SP-6 6.38E-01 2.05E-01 <MDA <MDA 1.19E-01 OL-5-18, SP-7 7.40E-01 1.79E-01 <MDA <MDA 1.11E-01 OL-5-18, SP-8 4.00E-01 1.49E-01 <MDA <MDA 1.19E-01 OL-5-18, SP-9 4.63E-01 1.41E-01 <MDA <MDA 1.05E-01 OL-5-18, SP-10 <MDA <MDA <MDA <MDA 1.36E-01 1.31E-01 OL-5-18, SP-11 3.16E-01 1.16E-01 <MDA <MDA 1.04E-01 OL-5-18, SP-12 5.80E-01 1.53E-01 <MDA <MDA 1.10E-01 OL-5-18, SP-2 6.66E-01 1.81E-01 <MDA <MDA 1.04E-01 OL-5-19, SP-1 <MDA <MDA <MDA <MDA 1.09E-01 1.22E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 7 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-19, SP-2 <MDA <MDA <MDA <MDA 6.75E-02 1.21E-01 OL-5-19, SP-3 <MDA <MDA <MDA <MDA 1.04E-01 1.27E-01 OL-5-19, SP-4 <MDA <MDA <MDA <MDA 6.92E-02 1.18E-01 OL-5-19, SP-5 <MDA <MDA <MDA <MDA 1.26E-01 1.15E-01 OL-5-19, SP-6 <MDA <MDA <MDA <MDA 1.23E-01 1.12E-01 OL-5-19, SP-7 <MDA <MDA <MDA <MDA 8.70E-02 1.18E-01 OL-5-19, SP-8 <MDA <MDA <MDA <MDA 5.44E-02 5.63E-02 OL-5-19, SP-9 <MDA <MDA <MDA <MDA 6.18E-02 1.10E-01 OL-5-19, SP-10 <MDA <MDA <MDA <MDA 6.50E-02 1.16E-01 OL-5-19, SP-11 <MDA <MDA <MDA <MDA 6.43E-02 1.15E-01 OL-5-19, SP-12 <MDA <MDA <MDA <MDA 6.82E-02 1.15E-01 OL-5-20, SP-1 5.57E-01 1.51E-01 <MDA <MDA 1.14E-01 OL-5-20, SP-2 7.47E-01 1.89E-01 <MDA <MDA 1.15E-01 OL-5-20, SP-3 5.91E-01 1.60E-01 <MDA <MDA 1.20E-01 OL-5-20, SP-4 4.79E-01 1.48E-01 <MDA <MDA 1.26E-01 OL-5-20, SP-5 7.68E-01 1.84E-01 <MDA <MDA 1.21E-01 OL-5-20, SP-6 4.09E-01 1.15E-01 <MDA <MDA 6.49E-02 OL-5-20, SP-7 6.85E-01 1.84E-01 <MDA <MDA 1.20E-01 OL-5-20, SP-8 5.01E-01 1.48E-01 <MDA <MDA 1.23E-01 OL-5-20, SP-9 <MDA <MDA <MDA <MDA 1.37E-01 1.27E-01 OL-5-20, SP-10 6.87E-01 1.76E-01 <MDA <MDA 1.25E-01 OL-5-20, SP-11 4.49E-01 1.47E-01 <MDA <MDA 1.34E-01 OL-5-20, SP-12 3.33E-01 1.23E-01 <MDA <MDA 1.31E-01 OL-5-21, SP-1 5.58E-01 1.57E-01 <MDA <MDA 1.24E-01 OL-5-21, SP-2 3.23E-01 1.20E-01 <MDA <MDA 1.25E-01 OL-5-21, SP-3 6.22E-01 1.91E-01 <MDA <MDA 1.30E-01 OL-5-21, SP-4 3.01E-01 1.39E-01 <MDA <MDA 1.37E-01 OL-5-21, SP-5 5.18E-01 1.72E-01 <MDA <MDA 1.32E-01 OL-5-21, SP-6 5.21E-01 1.70E-01 <MDA <MDA 1.32E-01 OL-5-21, SP-7 4.47E-01 1.21E-01 <MDA <MDA 6.95E-02 OL-5-21, SP-8 <MDA <MDA <MDA <MDA 1.22E-01 1.22E-01 OL-5-21, SP-9 2.02E-01 7.64E-02 <MDA <MDA 5.81E-02 OL-5-21, SP-10 2.93E-01 1.14E-01 <MDA <MDA 1.26E-01 OL-5-21, SP-11 3.95E-01 1.58E-01 <MDA <MDA 1.38E-01 OL-5-21, SP-12 2.26E-01 9.20E-02 <MDA <MDA 5.84E-02 OL-5-22, SP-1 <MDA <MDA <MDA <MDA 1.03E-01 1.01E-01 OL-5-22, SP-2 <MDA <MDA <MDA <MDA 6.70E-02 1.01E-01 OL-5-22, SP-3 <MDA <MDA <MDA <MDA 8.94E-02 1.25E-01 OL-5-22, SP-4 <MDA <MDA <MDA <MDA 6.05E-02 9.64E-02 OL-5-22, SP-5 <MDA <MDA <MDA <MDA 1.49E-01 1.17E-01 OL-5-22, SP-6 1.62E-01 7.51E-02 <MDA <MDA 1.00E-01 OL-5-22, SP-7 <MDA <MDA <MDA <MDA 5.90E-02 9.40E-02 OL-5-22, SP-8 <MDA <MDA <MDA <MDA 9.82E-02 9.39E-02 OL-5-22, SP-9 <MDA <MDA <MDA <MDA 6.63E-02 9.69E-02

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 8 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-22, SP-10 <MDA <MDA <MDA <MDA 7.13E-02 9.72E-02 OL-5-22, SP-11 <MDA <MDA <MDA <MDA 6.13E-02 9.75E-02 OL-5-22, SP-12 <MDA <MDA <MDA <MDA 8.91E-02 1.05E-01 OL-5-23, SP-1 <MDA <MDA <MDA <MDA 1.09E-01 1.05E-01 OL-5-23, SP-2 1.84E-01 6.93E-02 <MDA <MDA 5.68E-02 OL-5-23, SP-3 <MDA <MDA <MDA <MDA 6.54E-02 1.04E-01 OL-5-23, SP-4 2.89E-01 1.01E-01 <MDA <MDA 9.99E-02 OL-5-23, SP-5 2.22E-01 8.84E-02 <MDA <MDA 1.00E-01 OL-5-23, SP-6 <MDA <MDA <MDA <MDA 8.17E-02 1.03E-01 OL-5-23, SP-7 <MDA <MDA <MDA <MDA 8.16E-02 9.96E-02 OL-5-23, SP-8 <MDA <MDA <MDA <MDA 9.41E-02 1.41E-01 OL-5-23, SP-9 <MDA <MDA <MDA <MDA 7.42E-02 9.72E-02 OL-5-23, SP-10 <MDA <MDA <MDA <MDA 7.73E-02 1.03E-01 OL-5-23, SP-11 1.58E-01 7.52E-02 <MDA <MDA 1.03E-01 OL-5-23, SP-12 <MDA <MDA <MDA <MDA 1.17E-01 1.03E-01 OL-5-24, SP-1 < MDA < MDA < MDA < MDA 9.94E-02 1.23E-01 OL-5-24, SP-2 < MDA < MDA < MDA < MDA 8.20E-02 1.05E-01 OL-5-24, SP-3 1.16E-01 4.71E-02 < MDA < MDA 3.61E-02 OL-5-24, SP-4 < MDA < MDA < MDA < MDA 6.41E-02 1.02E-01 OL-5-24, SP-5 < MDA < MDA < MDA < MDA 1.40E-01 1.30E-01 OL-5-24, SP-6 1.80E-01 9.00E-02 < MDA < MDA 1.08E-01 OL-5-24, SP-7 < MDA < MDA < MDA < MDA 1.20E-01 1.12E-01 OL-5-24, SP-8 < MDA < MDA < MDA < MDA 6.98E-02 1.02E-01 OL-5-24, SP-9 < MDA < MDA < MDA < MDA 6.43E-02 1.02E-01 OL-5-24, SP-10 < MDA < MDA < MDA < MDA 1.15E-01 1.23E-01 OL-5-24, SP-11 < MDA < MDA < MDA < MDA 9.83E-02 1.10E-01 OL-5-24, SP-12 1.99E-01 7.51E-02 < MDA < MDA 5.22E-02 OL-5-25, SP-1 < MDA < MDA < MDA < MDA 9.97E-02 1.09E-01 OL-5-25, SP-2 < MDA < MDA < MDA < MDA 6.65E-02 1.06E-01 OL-5-25, SP-3 < MDA < MDA < MDA < MDA 1.22E-01 1.10E-01 OL-5-25, SP-4 1.62E-01 7.68E-02 < MDA < MDA 1.05E-01 OL-5-25, SP-5 < MDA < MDA < MDA < MDA 8.91E-02 1.10E-01 OL-5-25, SP-6 < MDA < MDA < MDA < MDA 1.08E-01 1.08E-01 OL-5-25, SP-7 < MDA < MDA < MDA < MDA 8.23E-02 1.15E-01 OL-5-25, SP-8 < MDA < MDA < MDA < MDA 8.68E-02 1.16E-01 OL-5-25, SP-9 < MDA < MDA < MDA < MDA 1.00E-01 1.12E-01 OL-5-25, SP-10 < MDA < MDA < MDA < MDA 1.18E-01 1.11E-01 OL-5-25, SP-11 < MDA < MDA < MDA < MDA 1.15E-01 1.01E-01 OL-5-25, SP-12 < MDA < MDA < MDA < MDA 7.77E-02 1.14E-01 OL-5-26, SP-1 < MDA < MDA < MDA < MDA 7.25E-02 1.15E-01 OL-5-26, SP-2 < MDA < MDA < MDA < MDA 6.20E-02 9.87E-02 OL-5-26, SP-3 < MDA < MDA < MDA < MDA 8.40E-02 1.17E-01 OL-5-26, SP-4 < MDA < MDA < MDA < MDA 7.50E-02 1.20E-01 OL-5-26, SP-5 < MDA < MDA < MDA < MDA 9.28E-02 1.07E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 9 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-26, SP-6 < MDA < MDA < MDA < MDA 7.20E-02 1.03E-01 OL-5-26, SP-7 < MDA < MDA < MDA < MDA 8.90E-02 1.19E-01 OL-5-26, SP-8 < MDA < MDA < MDA < MDA 1.12E-01 1.09E-01 OL-5-26, SP-9 < MDA < MDA < MDA < MDA 1.15E-01 1.12E-01 OL-5-26, SP-10 < MDA < MDA < MDA < MDA 8.94E-02 1.17E-01 OL-5-26, SP-11 < MDA < MDA < MDA < MDA 6.96E-02 1.11E-01 OL-5-26, SP-12 < MDA < MDA < MDA < MDA 1.26E-01 1.07E-01 OL-5-27, SP-1 2.25E-01 9.80E-02 < MDA < MDA 1.01E-01 OL-5-27, SP-2 < MDA < MDA < MDA < MDA 7.90E-02 1.03E-01 OL-5-27, SP-3 < MDA < MDA < MDA < MDA 1.22E-01 1.10E-01 OL-5-27, SP-4 < MDA < MDA < MDA < MDA 1.01E-01 1.19E-01 OL-5-27, SP-5 < MDA < MDA < MDA < MDA 7.25E-02 1.15E-01 OL-5-27, SP-6 < MDA < MDA < MDA < MDA 7.63E-02 1.22E-01 OL-5-27, SP-7 < MDA < MDA < MDA < MDA 1.05E-01 1.09E-01 OL-5-27, SP-8 < MDA < MDA < MDA < MDA 9.23E-02 1.11E-01 OL-5-27, SP-9 1.66E-01 8.14E-02 < MDA < MDA 1.15E-01 OL-5-27, SP-10 < MDA < MDA < MDA < MDA 7.16E-02 1.14E-01 OL-5-27, SP-11 < MDA < MDA < MDA < MDA 7.46E-02 1.19E-01 OL-5-27, SP-12 2.53E-01 7.25E-02 < MDA < MDA 3.54E-02 OL-5-28, SP-1 1.82E-01 8.43E-02 < MDA < MDA 1.12E-01 OL-5-28, SP-2 < MDA < MDA < MDA < MDA 1.13E-01 1.08E-01 OL-5-28, SP-3 < MDA < MDA < MDA < MDA 6.93E-02 1.10E-01 OL-5-28, SP-4 < MDA < MDA < MDA < MDA 9.01E-02 1.17E-01 OL-5-28, SP-5 < MDA < MDA < MDA < MDA 7.66E-02 1.00E-01 OL-5-28, SP-6 < MDA < MDA < MDA < MDA 7.18E-02 1.14E-01 OL-5-28, SP-7 < MDA < MDA < MDA < MDA 7.02E-02 1.03E-01 OL-5-28, SP-8 < MDA < MDA < MDA < MDA 9.76E-02 1.12E-01 OL-5-28, SP-9 < MDA < MDA < MDA < MDA 6.78E-02 9.91E-02 OL-5-28, SP-10 < MDA < MDA < MDA < MDA 5.95E-02 9.47E-02 OL-5-28, SP-11 < MDA < MDA < MDA < MDA 6.31E-02 1.00E-01 OL-5-28, SP-12 < MDA < MDA < MDA < MDA 1.38E-01 9.95E-02 OL-5-29, SP-1 < MDA < MDA < MDA < MDA 7.52E-02 1.20E-01 OL-5-29, SP-2 < MDA < MDA < MDA < MDA 9.89E-02 1.03E-01 OL-5-29, SP-3 1.30E-01 5.08E-02 < MDA < MDA 5.66E-02 OL-5-29, SP-4 < MDA < MDA < MDA < MDA 1.30E-01 1.06E-01 OL-5-29, SP-5 < MDA < MDA < MDA < MDA 1.27E-01 1.06E-01 OL-5-29, SP-6 < MDA < MDA < MDA < MDA 1.04E-01 1.06E-01 OL-5-29, SP-7 < MDA < MDA < MDA < MDA 1.23E-01 1.04E-01 OL-5-29, SP-8 2.31E-01 9.18E-02 < MDA < MDA 1.04E-01 OL-5-29, SP-9 < MDA < MDA < MDA < MDA 6.41E-02 1.02E-01 OL-5-29, SP-10 < MDA < MDA < MDA < MDA 1.10E-01 1.04E-01 OL-5-29, SP-11 < MDA < MDA < MDA < MDA 6.14E-02 1.12E-01 OL-5-29, SP-12 < MDA < MDA < MDA < MDA 1.01E-01 1.16E-01 OL-5-30, SP-1 2.94E-01 1.21E-01 < MDA < MDA 1.10E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 10 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-30, SP-2 4.35E-01 1.46E-01 < MDA < MDA 1.01E-01 OL-5-30, SP-3 3.67E-01 1.29E-01 < MDA < MDA 9.98E-02 OL-5-30, SP-4 3.86E-01 1.31E-01 < MDA < MDA 1.13E-01 OL-5-30, SP-5 3.56E-01 1.35E-01 < MDA < MDA 1.06E-01 OL-5-30, SP-6 4.98E-01 1.35E-01 < MDA < MDA 1.01E-01 OL-5-30, SP-7 3.99E-01 1.37E-01 < MDA < MDA 1.19E-01 OL-5-30, SP-8 5.78E-01 1.69E-01 < MDA < MDA 1.06E-01 OL-5-30, SP-9 5.44E-01 1.56E-01 < MDA < MDA 1.25E-01 OL-5-30, SP-10 3.85E-01 1.28E-01 < MDA < MDA 1.03E-01 OL-5-30, SP-11 6.65E-01 1.74E-01 < MDA < MDA 1.05E-01 OL-5-30, SP-12 3.68E-01 1.31E-01 < MDA < MDA 1.05E-01 OL-5-31, SP-1 < MDA < MDA < MDA < MDA 9.65E-02 1.00E-01 OL-5-31, SP-2 < MDA < MDA < MDA < MDA 8.74E-02 1.00E-01 OL-5-31, SP-3 < MDA < MDA < MDA < MDA 7.15E-02 1.05E-01 OL-5-31, SP-4 < MDA < MDA < MDA < MDA 5.07E-02 3.53E-02 OL-5-31, SP-5 < MDA < MDA < MDA < MDA 6.73E-02 1.07E-01 OL-5-31, SP-6 < MDA < MDA < MDA < MDA 9.71E-02 1.04E-01 OL-5-31, SP-7 < MDA < MDA < MDA < MDA 9.28E-02 1.22E-01 OL-5-31, SP-8 1.64E-01 7.58E-02 < MDA < MDA 1.04E-01 OL-5-31, SP-9 < MDA < MDA < MDA < MDA 8.55E-02 1.10E-01 OL-5-31, SP-10 < MDA < MDA < MDA < MDA 1.43E-01 1.35E-01 OL-5-31, SP-11 < MDA < MDA < MDA < MDA 1.13E-01 1.15E-01 OL-5-31, SP-12 < MDA < MDA < MDA < MDA 7.84E-02 9.56E-02 OL-5-32, SP-1 3.86E-01 1.38E-01 < MDA < MDA 1.14E-01 OL-5-32, SP-2 5.29E-01 1.44E-01 < MDA < MDA 1.09E-01 OL-5-32, SP-3 5.00E-01 1.85E-01 < MDA < MDA 1.32E-01 OL-5-32, SP-4 5.25E-01 1.49E-01 < MDA < MDA 1.04E-01 OL-5-32, SP-5 5.67E-01 1.67E-01 < MDA < MDA 1.34E-01 OL-5-32, SP-6 4.02E-01 1.48E-01 < MDA < MDA 1.31E-01 OL-5-32, SP-7 4.15E-01 1.37E-01 < MDA < MDA 1.04E-01 OL-5-32, SP-8 3.75E-01 1.30E-01 < MDA < MDA 1.02E-01 OL-5-32, SP-9 4.48E-01 1.32E-01 < MDA < MDA 1.06E-01 OL-5-32, SP-10 4.73E-01 1.54E-01 < MDA < MDA 1.20E-01 OL-5-32, SP-11 4.38E-01 1.54E-01 < MDA < MDA 1.15E-01 OL-5-32, SP-12 3.99E-01 1.57E-01 < MDA < MDA 1.18E-01 OL-5-33, SP-1 < MDA < MDA < MDA < MDA 7.83E-02 1.15E-01 OL-5-33, SP-2 2.29E-01 1.03E-01 < MDA < MDA 1.27E-01 OL-5-33, SP-3 < MDA < MDA < MDA < MDA 9.99E-02 1.20E-01 OL-5-33, SP-4 < MDA < MDA < MDA < MDA 1.02E-01 1.08E-01 OL-5-33, SP-5 < MDA < MDA < MDA < MDA 8.41E-02 1.17E-01 OL-5-33, SP-6 1.77E-01 8.18E-02 < MDA < MDA 1.09E-01 OL-5-33, SP-7 < MDA < MDA < MDA < MDA 9.57E-02 1.13E-01 OL-5-33, SP-8 < MDA < MDA < MDA < MDA 1.12E-01 1.04E-01 OL-5-33, SP-9 < MDA < MDA < MDA < MDA 7.44E-02 1.12E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 11 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-33, SP-10 < MDA < MDA < MDA < MDA 1.18E-01 1.13E-01 OL-5-33, SP-11 < MDA < MDA < MDA < MDA 7.58E-02 1.14E-01 OL-5-33, SP-12 < MDA < MDA < MDA < MDA 9.82E-02 1.16E-01 OL-5-33, SP-1 < MDA < MDA < MDA < MDA 7.83E-02 1.15E-01 OL-5-33, SP-2 2.29E-01 1.03E-01 < MDA < MDA 1.27E-01 OL-5-33, SP-3 < MDA < MDA < MDA < MDA 9.99E-02 1.20E-01 OL-5-33, SP-4 < MDA < MDA < MDA < MDA 1.02E-01 1.08E-01 OL-5-33, SP-5 < MDA < MDA < MDA < MDA 8.41E-02 1.17E-01 OL-5-33, SP-6 1.77E-01 8.18E-02 < MDA < MDA 1.09E-01 OL-5-33, SP-7 < MDA < MDA < MDA < MDA 9.57E-02 1.13E-01 OL-5-33, SP-8 < MDA < MDA < MDA < MDA 1.12E-01 1.04E-01 OL-5-33, SP-9 < MDA < MDA < MDA < MDA 7.44E-02 1.12E-01 OL-5-33, SP-10 < MDA < MDA < MDA < MDA 1.18E-01 1.13E-01 OL-5-33, SP-11 < MDA < MDA < MDA < MDA 7.58E-02 1.14E-01 OL-5-33, SP-12 < MDA < MDA < MDA < MDA 9.82E-02 1.16E-01 OL-5-34, SP-1 2.10E-01 1.05E-01 < MDA < MDA 1.22E-01 OL-5-34, SP-2 < MDA < MDA < MDA < MDA 7.52E-02 1.14E-01 OL-5-34, SP-3 < MDA < MDA < MDA < MDA 8.24E-02 1.31E-01 OL-5-34, SP-4 < MDA < MDA < MDA < MDA 9.82E-02 1.10E-01 OL-5-34, SP-5 1.93E-01 9.13E-02 < MDA < MDA 1.19E-01 OL-5-34, SP-6 1.99E-01 8.97E-02 < MDA < MDA 1.17E-01 OL-5-34, SP-7 2.72E-01 1.12E-01 < MDA < MDA 1.26E-01 OL-5-34, SP-8 < MDA < MDA < MDA < MDA 8.12E-02 1.19E-01 OL-5-34, SP-9 < MDA < MDA < MDA < MDA 7.98E-02 1.20E-01 OL-5-34, SP-10 < MDA < MDA < MDA < MDA 7.94E-02 1.08E-01 OL-5-34, SP-11 2.11E-01 9.46E-02 < MDA < MDA 1.17E-01 OL-5-34, SP-12 < MDA < MDA < MDA < MDA 8.67E-02 1.14E-01 OL-5-35, SP-1 < MDA < MDA < MDA < MDA 8.07E-02 1.28E-01 OL-5-35, SP-2 2.13E-01 9.13E-02 < MDA < MDA 1.08E-01 OL-5-35, SP-3 < MDA < MDA < MDA < MDA 1.28E-01 1.23E-01 OL-5-35, SP-4 < MDA < MDA < MDA < MDA 7.42E-02 1.12E-01 OL-5-35, SP-5 < MDA < MDA < MDA < MDA 6.52E-02 1.04E-01 OL-5-35, SP-6 1.66E-01 7.91E-02 < MDA < MDA 1.08E-01 OL-5-35, SP-7 < MDA < MDA < MDA < MDA 1.19E-01 1.05E-01 OL-5-35, SP-8 < MDA < MDA < MDA < MDA 1.23E-01 1.07E-01 OL-5-35, SP-9 < MDA < MDA < MDA < MDA 1.07E-01 1.22E-01 OL-5-35, SP-10 2.08E-01 1.00E-01 < MDA < MDA 1.07E-01 OL-5-35, SP-11 < MDA < MDA < MDA < MDA 7.78E-02 1.17E-01 OL-5-35, SP-12 < MDA < MDA < MDA < MDA 1.20E-01 1.01E-01 OL-5-36, SP-1 4.38E-01 1.43E-01 < MDA < MDA 1.17E-01 OL-5-36, SP-2 5.28E-01 1.66E-01 < MDA < MDA 1.43E-01 OL-5-36, SP-3 3.31E-01 1.32E-01 < MDA < MDA 1.32E-01 OL-5-36, SP-4 4.00E-01 1.51E-01 < MDA < MDA 1.13E-01 OL-5-36, SP-5 6.22E-01 1.74E-01 < MDA < MDA 1.35E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 12 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-36, SP-6 4.00E-01 1.23E-01 < MDA < MDA 1.07E-01 OL-5-36, SP-7 3.02E-01 1.41E-01 < MDA < MDA 1.30E-01 OL-5-36, SP-8 3.21E-01 1.18E-01 < MDA < MDA 1.02E-01 OL-5-36, SP-9 3.85E-01 1.37E-01 < MDA < MDA 1.17E-01 OL-5-36, SP-10 5.20E-01 1.55E-01 < MDA < MDA 1.26E-01 OL-5-36, SP-11 3.81E-01 1.19E-01 < MDA < MDA 1.31E-01 OL-5-36, SP-12 4.98E-01 1.82E-01 < MDA < MDA 1.34E-01 OL-5-37, SP-1 < MDA < MDA < MDA < MDA 6.62E-02 1.05E-01 OL-5-37, SP-2 2.51E-01 1.15E-01 < MDA < MDA 1.13E-01 OL-5-37, SP-3 3.56E-01 1.25E-01 < MDA < MDA 1.03E-01 OL-5-37, SP-4 < MDA < MDA < MDA < MDA 1.08E-01 1.01E-01 OL-5-37, SP-5 < MDA < MDA < MDA < MDA 1.18E-01 9.80E-02 OL-5-37, SP-6 3.11E-01 1.22E-01 < MDA < MDA 1.09E-01 OL-5-37, SP-7 < MDA < MDA < MDA < MDA 6.72E-02 1.02E-01 OL-5-37, SP-8 < MDA < MDA < MDA < MDA 6.28E-02 1.00E-01 OL-5-37, SP-9 4.54E-01 1.64E-01 < MDA < MDA 1.09E-01 OL-5-37, SP-10 < MDA < MDA < MDA < MDA 5.95E-02 9.48E-02 OL-5-37, SP-11 < MDA < MDA < MDA < MDA 6.37E-02 1.01E-01 OL-5-37, SP-12 3.40E-01 1.54E-01 < MDA < MDA 1.08E-01 OL-5-38, SP-1 < MDA < MDA < MDA < MDA 9.13E-02 1.27E-01 OL-5-38, SP-2 2.30E-01 9.69E-02 < MDA < MDA 1.17E-01 OL-5-38, SP-3 < MDA < MDA < MDA < MDA 1.22E-01 1.18E-01 OL-5-38, SP-4 < MDA < MDA < MDA < MDA 8.08E-02 1.15E-01 OL-5-38, SP-5 < MDA < MDA < MDA < MDA 9.56E-02 1.01E-01 OL-5-38, SP-6 2.54E-01 1.05E-01 < MDA < MDA 1.24E-01 OL-5-38, SP-7 < MDA < MDA < MDA < MDA 1.25E-01 1.29E-01 OL-5-38, SP-8 < MDA < MDA < MDA < MDA 1.00E-01 1.19E-01 OL-5-38, SP-9 2.64E-01 1.07E-01 < MDA < MDA 1.24E-01 OL-5-38, SP-10 < MDA < MDA < MDA < MDA 1.12E-01 1.08E-01 OL-5-38, SP-11 < MDA < MDA < MDA < MDA 9.41E-02 1.15E-01 OL-5-38, SP-12 < MDA < MDA < MDA < MDA 8.98E-02 1.13E-01 OL-5-39, SP-1 < MDA < MDA < MDA < MDA 8.18E-02 1.14E-01 OL-5-39, SP-2 < MDA < MDA < MDA < MDA 1.14E-01 1.15E-01 OL-5-39, SP-3 < MDA < MDA < MDA < MDA 1.36E-01 1.26E-01 OL-5-39, SP-4 < MDA < MDA < MDA < MDA 8.05E-02 5.99E-02 OL-5-39, SP-5 < MDA < MDA < MDA < MDA 7.29E-02 1.16E-01 OL-5-39, SP-6 < MDA < MDA < MDA < MDA 7.81E-02 1.24E-01 OL-5-39, SP-7 < MDA < MDA < MDA < MDA 1.08E-01 1.20E-01 OL-5-39, SP-8 < MDA < MDA < MDA < MDA 9.98E-02 1.19E-01 OL-5-39, SP-9 < MDA < MDA < MDA < MDA 7.67E-02 1.22E-01 OL-5-39, SP-10 < MDA < MDA < MDA < MDA 1.04E-01 6.35E-02 OL-5-39, SP-11 < MDA < MDA < MDA < MDA 1.87E-01 1.28E-01 OL-5-39, SP-12 < MDA < MDA < MDA < MDA 9.81E-02 1.28E-01 OL-5-40, SP-1 1.96E-01 6.00E-02 < MDA < MDA 4.07E-02

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 13 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-40, SP-2 < MDA < MDA < MDA < MDA 1.14E-01 1.22E-01 OL-5-40, SP-3 < MDA < MDA < MDA < MDA 1.18E-01 1.20E-01 OL-5-40, SP-4 < MDA < MDA < MDA < MDA 1.30E-01 1.27E-01 OL-5-40, SP-5 < MDA < MDA < MDA < MDA 7.86E-02 1.25E-01 OL-5-40, SP-6 < MDA < MDA < MDA < MDA 8.31E-02 1.12E-01 OL-5-40, SP-7 1.82E-01 8.68E-02 < MDA < MDA 1.19E-01 OL-5-40, SP-8 < MDA < MDA < MDA < MDA 9.25E-02 1.15E-01 OL-5-40, SP-9 < MDA < MDA < MDA < MDA 8.69E-02 1.16E-01 OL-5-40, SP-10 < MDA < MDA < MDA < MDA 1.07E-01 1.26E-01 OL-5-40, SP-11 2.09E-01 1.01E-01 < MDA < MDA 1.20E-01 OL-5-40, SP-12 < MDA < MDA < MDA < MDA 8.41E-02 1.27E-01 OL-5-41, SP-1 < MDA < MDA < MDA < MDA 1.39E-01 1.17E-01 OL-5-41, SP-2 < MDA < MDA < MDA < MDA 1.08E-01 1.32E-01 OL-5-41, SP-3 < MDA < MDA < MDA < MDA 1.70E-01 1.34E-01 OL-5-41, SP-4 < MDA < MDA < MDA < MDA 8.56E-02 1.29E-01 OL-5-41, SP-5 < MDA < MDA < MDA < MDA 9.78E-02 1.15E-01 OL-5-41, SP-6 < MDA < MDA < MDA < MDA 1.02E-01 1.24E-01 OL-5-41, SP-7 < MDA < MDA < MDA < MDA 9.79E-02 1.28E-01 OL-5-41, SP-8 < MDA < MDA < MDA < MDA 8.66E-02 1.31E-01 OL-5-41, SP-9 < MDA < MDA < MDA < MDA 1.32E-01 1.24E-01 OL-5-41, SP-10 < MDA < MDA < MDA < MDA 1.09E-01 1.26E-01 OL-5-41, SP-11 < MDA < MDA < MDA < MDA 9.53E-02 1.20E-01 OL-5-41, SP-12 < MDA < MDA < MDA < MDA 1.01E-01 1.31E-01 OL-5-42, SP-1 2.90E-01 1.27E-01 < MDA < MDA 1.17E-01 OL-5-42, SP-2 < MDA < MDA < MDA < MDA 1.68E-01 1.43E-01 OL-5-42, SP-3 < MDA < MDA < MDA < MDA 1.10E-01 1.36E-01 OL-5-42, SP-4 < MDA < MDA < MDA < MDA 1.88E-01 1.19E-01 OL-5-42, SP-5 3.90E-01 1.73E-01 < MDA < MDA 1.37E-01 OL-5-42, SP-6 < MDA < MDA < MDA < MDA 1.56E-01 1.23E-01 OL-5-42, SP-7 < MDA < MDA < MDA < MDA 8.66E-02 1.18E-01 OL-5-42, SP-8 < MDA < MDA < MDA < MDA 1.71E-01 1.13E-01 OL-5-42, SP-9 < MDA < MDA < MDA < MDA 1.62E-01 1.21E-01 OL-5-42, SP-10 < MDA < MDA < MDA < MDA 1.29E-01 1.14E-01 OL-5-42, SP-11 < MDA < MDA < MDA < MDA 1.43E-01 1.24E-01 OL-5-43, SP-1 < MDA < MDA < MDA < MDA 1.56E-01 1.17E-01 OL-5-43, SP-2 < MDA < MDA < MDA < MDA 1.07E-01 1.31E-01 OL-5-43, SP-3 < MDA < MDA < MDA < MDA 1.40E-01 1.30E-01 OL-5-43, SP-4 < MDA < MDA < MDA < MDA 1.38E-01 1.36E-01 OL-5-43, SP-5 < MDA < MDA < MDA < MDA 1.73E-01 1.30E-01 OL-5-43, SP-6 2.44E-01 1.22E-01 < MDA < MDA 1.42E-01 OL-5-43, SP-7 < MDA < MDA < MDA < MDA 1.36E-01 1.31E-01 OL-5-43, SP-8 < MDA < MDA < MDA < MDA 1.11E-01 1.38E-01 OL-5-43, SP-9 < MDA < MDA < MDA < MDA 1.61E-01 1.30E-01 OL-5-43, SP-10 < MDA < MDA < MDA < MDA 1.63E-01 1.42E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix D Rev. 0, Page 14 of 14 Soil Lift Sample Results CS-137 Co-60 Cs-137 Co-60 Location MDA MDA pCi/g 2 pCi/g 2 pCi/g pCi/g OL-5-43, SP-11 < MDA < MDA < MDA < MDA 1.32E-01 1.32E-01 OL-5-44, SP-1 2.44E-01 1.21E-01 < MDA < MDA 1.19E-01 OL-5-44, SP-2 4.86E-01 1.69E-01 < MDA < MDA 1.22E-01 OL-5-44, SP-3 3.19E-01 1.38E-01 < MDA < MDA 1.28E-01 OL-5-44, SP-4 < MDA < MDA < MDA < MDA 1.85E-01 1.27E-01 OL-5-44, SP-5 < MDA < MDA < MDA < MDA 1.45E-01 1.12E-01 OL-5-44, SP-6 < MDA < MDA < MDA < MDA 1.37E-01 1.11E-01 OL-5-44, SP-7 3.85E-01 1.43E-01 < MDA < MDA 1.19E-01 OL-5-44, SP-8 < MDA < MDA < MDA < MDA 1.10E-01 1.03E-01 OL-5-44, SP-9 < MDA < MDA < MDA < MDA 1.39E-01 1.13E-01 OL-5-44, SP-10 < MDA < MDA < MDA < MDA 1.14E-01 1.20E-01 OL-5-44, SP-11 2.26E-01 1.06E-01 < MDA < MDA 1.08E-01 OL-5-44, SP-12 < MDA < MDA < MDA < MDA 1.31E-01 1.20E-01 OL-5-45, SP-1 < MDA < MDA < MDA < MDA 1.86E-01 1.15E-01 OL-5-45, SP-2 3.95E-01 1.40E-01 < MDA < MDA 1.25E-01 OL-5-45, SP-3 < MDA < MDA < MDA < MDA 1.25E-01 1.17E-01 OL-5-45, SP-4 4.17E-01 1.50E-01 < MDA < MDA 1.20E-01 OL-5-45, SP-5 < MDA < MDA < MDA < MDA 1.52E-01 1.25E-01 OL-5-45, SP-6 3.84E-01 1.49E-01 < MDA < MDA 1.63E-01 OL-5-45, SP-7 < MDA < MDA < MDA < MDA 1.57E-01 1.19E-01 OL-5-45, SP-8 2.87E-01 1.27E-01 < MDA < MDA 1.32E-01 OL-5-45, SP-9 3.34E-01 1.21E-01 < MDA < MDA 1.14E-01 OL-5-45, SP-10 4.64E-01 1.62E-01 < MDA < MDA 1.17E-01 OL-5-45, SP-11 2.42E-01 1.14E-01 < MDA < MDA 1.17E-01

Plum Brook Reactor Facility Final Status Survey Report Attachment 18 Excavated and Backfill Materials Revision 0 Appendix E Verification and QC Sample Results

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix E Rev. 0, Page 2 of 8 Table of Contents Table 1, SR-171 Verification Survey Sample Results .......................................................................... 3 Table 2, Summary of SR-171 Verification Survey Sample Results ..................................................... 5 Table 3, Soil Lift and Verification Soil Sample QC Comparison ........................................................ 6

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix E Rev. 0, Page 3 of 8 Table 1, SR-171 Verification Survey Sample Results Cs-137 Co-60 Weight Cs-137 Cs-137 2 Co-60 Co-60 2 Sample Log # Sample # Batch/Pile MDA MDA (g)

(pCi/g)

PB09-01560 SR-171-1 1 365.1 <MDA <MDA <MDA <MDA 7.81E-02 1.19E-01 PB09-01562 SR-171-2 1 372.1 <MDA <MDA <MDA <MDA 8.06E-02 1.26E-01 PB09-01563 SR-171-3 1 387.2 1.99E-01 8.91E-02 <MDA <MDA 1.16E-01 PB09-01615 SR-171-4 2 362.8 <MDA <MDA <MDA <MDA 7.86E-02 1.20E-01 PB09-01616 SR-171-5 2 352.8 <MDA <MDA <MDA <MDA 8.50E-02 1.33E-01 PB09-01617 SR-171-6 2 405.3 <MDA <MDA <MDA <MDA 7.04E-02 1.07E-01 PB10-02422 SR-171-42 2 381.7 1.63E-01 8.14E-02 <MDA <MDA 1.19E-01 PB10-02423 SR-171-43 2 372.4 <MDA <MDA <MDA <MDA 1.27E-01 1.27E-01 PB10-02424 SR-171-44 2 385.6 2.41E-01 9.88E-02 <MDA <MDA 1.18E-01 PB10-02425 SR-171-45 2 386.5 <MDA <MDA <MDA <MDA 8.43E-02 1.14E-01 PB09-01669 SR-171-7 3 352.6 <MDA <MDA <MDA <MDA 8.51E-02 1.33E-01 PB09-01670 SR-171-8 3 315.2 <MDA <MDA <MDA <MDA 9.00E-02 1.43E-01 PB09-01671 SR-171-9 3 391.2 1.77E-01 8.59E-02 <MDA <MDA 1.20E-01 PB09-01672 SR-171-10 4 387.3 <MDA <MDA <MDA <MDA 8.67E-02 1.16E-01 PB09-01673 SR-171-11 4 387.5 <MDA <MDA <MDA <MDA 7.36E-02 1.12E-01 PB09-01674 SR-171-12 4 453.4 <MDA <MDA <MDA <MDA 9.05E-02 1.04E-01 PB09-01715 SR-171-13 5 415.4 <MDA <MDA <MDA <MDA 6.87E-02 1.05E-01 PB09-01716 SR-171-14 5 421.1 <MDA <MDA <MDA <MDA 8.99E-02 1.11E-01 PB09-01717 SR-171-15 5 338.1 2.05E-01 9.68E-02 <MDA <MDA 1.33E-01 PB09-01768 SR-171-17 6 385.3 <MDA <MDA <MDA <MDA 7.36E-02 1.17E-01 PB09-01769 SR-171-18 6 411.8 <MDA <MDA <MDA <MDA 7.28E-02 1.14E-01 PB09-01770 SR-171-19 6 370.6 <MDA <MDA <MDA <MDA 7.66E-02 1.22E-01 PB09-01765 SR-171-21 7 365.3 <MDA <MDA <MDA <MDA 1.87E-01 1.28E-01 PB09-01766 SR-171-22 7 365.0 <MDA <MDA <MDA <MDA 7.77E-02 1.24E-01 PB09-01767 SR-171-23 7 358.1 <MDA <MDA <MDA <MDA 9.57E-02 1.31E-01 PB09-02070 SR-171-24 8 351.7 4.29E-01 1.38E-01 <MDA <MDA 1.24E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix E Rev. 0, Page 4 of 8 Table 1, SR-171 Verification Survey Sample Results Cs-137 Co-60 Weight Cs-137 Cs-137 2 Co-60 Co-60 2 Sample Log # Sample # Batch/Pile MDA MDA (g)

(pCi/g)

PB09-02071 SR-171-25 8 344.7 4.69E-01 1.45E-01 <MDA <MDA 1.31E-01 PB09-02072 SR-171-26 8 354.7 5.39E-01 1.74E-01 <MDA <MDA 1.27E-01 PB09-02073 SR-171-27 9 393.2 2.17E-01 1.08E-01 <MDA <MDA 1.19E-01 PB09-02074 SR-171-28 9 390.7 2.48E-01 9.93E-02 <MDA <MDA 1.11E-01 PB09-02075 SR-171-29 9 406.8 3.82E-01 1.44E-01 <MDA <MDA 1.11E-01 PB09-02137 SR-171-30 10 387.2 4.08E-01 1.28E-01 <MDA <MDA 1.16E-01 PB09-02138 SR-171-31 10 324.8 2.63E-01 1.15E-01 <MDA <MDA 1.45E-01 PB09-02139 SR-171-32 10 411.3 2.35E-01 9.43E-02 <MDA <MDA 1.06E-01 PB10-00943 SR-171-33 158 376.7 1.55E-01 5.58E-02 <MDA <MDA 3.90E-02 PB10-00944 SR-171-34 159 396.1 <MDA <MDA <MDA <MDA 7.16E-02 1.14E-01 PB10-01107 SR-171-35 165 366.4 <MDA <MDA <MDA <MDA 8.19E-02 1.28E-01 PB10-01108 SR-171-36 166 375.8 <MDA <MDA <MDA <MDA 8.94E-02 1.20E-01 PB10-01346 SR-171-39 173 415.8 <MDA <MDA <MDA <MDA 6.82E-02 1.08E-01 PB10-01347 SR-171-40 174 398.6 1.87E-01 8.39E-02 <MDA <MDA 1.11E-01 PB10-02635 SR-171-46 180 388.3 3.00E-01 1.10E-01 <MDA <MDA 1.18E-01 PB10-02636 SR-171-47 181 340.4 <MDA <MDA <MDA <MDA 8.81E-02 1.39E-01 PB10-02644 SR-171-48 182 369.0 3.37E-01 1.19E-01 <MDA <MDA 1.24E-01 PB10-02645 SR-171-49 183 397.0 3.07E-01 1.13E-01 <MDA <MDA 1.19E-01 PB10-02693 SR-171-50 184 355.9 <MDA <MDA <MDA <MDA 8.42E-02 1.33E-01 PB10-02694 SR-171-51 185 383.8 4.45E-01 1.35E-01 <MDA <MDA 1.19E-01 PB10-02757 SR-171-52 186 392.0 <MDA <MDA <MDA <MDA 1.04E-01 1.16E-01 PB10-02758 SR-171-53 187 384.3 <MDA <MDA <MDA <MDA 7.80E-02 1.23E-01 PB10-02855 SR-171-54 188 364.0 4.58E-01 1.40E-01 <MDA <MDA 1.25E-01 PB10-02856 SR-171-55 189 361.7 4.08E-01 1.33E-01 <MDA <MDA 1.26E-01 PB10-02858 SR-171-56 190 317.7 3.62E-01 1.78E-01 <MDA <MDA 1.44E-01 PB10-02859 SR-171-57 191 340.3 <MDA <MDA <MDA <MDA 1.50E-01 1.34E-01 PB10-03254 SR-171-58 201 319.1 2.19E-01 1.03E-01 <MDA <MDA 1.43E-01

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix E Rev. 0, Page 5 of 8 Table 1, SR-171 Verification Survey Sample Results Cs-137 Co-60 Weight Cs-137 Cs-137 2 Co-60 Co-60 2 Sample Log # Sample # Batch/Pile MDA MDA (g)

(pCi/g)

PB10-03478 SR-171-59 207 425.9 3.07E-01 1.04E-01 <MDA <MDA 1.03E-01 PB10-03479 SR-171-60 208 447.0 1.82E-01 7.97E-02 <MDA <MDA 1.02E-01 PB10-03482 SR-171-62 209 407.2 1.74E-01 8.00E-02 <MDA <MDA 1.08E-01 Table 2, Summary of SR-171 Verification Survey Sample Results Cs-137 Co-60 Cs-137 MDA Co-60 MDA Statistic Weight pCi/g 2 pCi/g 2 pCi/g Maximum 453.4 5.39E-01 1.78E-01 < MDA < MDA 1.87E-01 1.45E-01 Average 378.2 2.97E-01 1.12E-01 N/A N/A 8.92E-02 1.20E-01 Std. Dev. 29.9 1.12E-01 2.93E-02 N/A N/A 2.54E-02 1.54E-02 Total Number 56 27 27 0 0 29 56

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix E Rev. 0, Page 6 of 8 Table 3, Soil Lift and Verification Soil Sample QC Comparison Original Replicate Original 2 Resolution Sample # Location Ratio (3) Pass (4) (5)

Result (1) Result (1) Uncertainty (2)

SR-171-16 Pile #5, Sample #3 QC 2.05E-01 8.89E-02 9.68E-02 4.2 0.43 No (6)

(6)

SR-171-20 Pile #6, Sample #3 QC <MDA <MDA N/A No SR-171-41 Pile # 174 QC 1.87E-01 1.90E-01 8.38E-02 4.5 1.02 Yes (6)

SR-171-61 Pile #208 QC 1.82E-01 5.22E-02 7.97E-02 4.6 0.29 No (6)

SR-283-5 OL-5-1 SP-4 QC 1.85E-01 6.89E-02 8.27E-02 4.5 0.37 No SR-283-19 OL-5-2 SP-5 QC 3.94E-01 3.90E-01 1.34E-01 5.9 0.99 Yes SR-283-31 OL-5-3 SP-4 QC 2.02E-01 2.73E-01 9.52E-02 4.2 1.35 Yes SR-283-48 OL-5-4 SP-8 QC 4.35E-01 3.15E-01 1.36E-01 6.4 0.72 Yes SR-283-58 OL-5-5 SP-5 QC 2.87E-01 2.73E-01 1.16E-01 4.9 0.95 Yes SR-283-71 OL-5-6, SP-5 QC 4.36E-01 3.88E-01 1.37E-01 6.4 0.89 Yes SR-283-88 OL-5-7, SP-8 QC <MDA <MDA Yes SR-283-97 OL-5-8, SP-4 QC 3.88E-01 3.26E-01 1.28E-01 6.1 0.84 Yes SR-283-123 OL-5-8, SP-12 QC 2.88E-01 4.15E-01 1.37E-01 4.2 1.44 Yes SR-283-136 OL-5-10, SP-12 QC <MDA <MDA Yes SR-283-139 OL-5-12, SP-2 QC 2.76E-01 1.01E-01 1.15E-01 4.8 0.37 No (6)

SR-283-153 OL-5-13, SP-3 QC <MDA <MDA Yes SR-283-167 OL-5-14, SP-4 QC 2.43E-01 1.88E-01 9.17E-02 5.3 0.77 Yes SR-283-182 OL-5-15, SP-6 QC <MDA <MDA Yes SR-283-191 OL-5-16, SP-2 QC <MDA <MDA Yes SR-283-207 OL-5-17, SP-5 QC <MDA <MDA Yes SR-283-223 OL-5-18, SP-8 QC 4.00E-01 2.94E-01 1.49E-01 5.4 0.74 Yes SR-283-230 OL-5-19, SP-2 QC <MDA <MDA Yes SR-283-249 OL-5-20, SP-8 QC 5.01E-01 4.93E-01 1.48E-01 6.8 0.98 Yes SR-283-261 OL-5-21, SP-7 QC 4.47E-01 5.08E-01 1.21E-01 7.4 1.14 Yes SR-283-270 OL-5-22, SP-3 QC <MDA <MDA Yes SR-283-282 OL-5-23, SP-2 QC 1.84E-01 1.34E-01 6.93E-02 5.3 0.73 Yes SR-283-296 OL-5-24, SP-3 QC 1.16E-01 1.65E-01 4.71E-02 4.9 1.42 Yes SR-283-312 OL-5-25, SP-6 QC <MDA <MDA Yes

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix E Rev. 0, Page 7 of 8 Table 3, Soil Lift and Verification Soil Sample QC Comparison Sample # Location Original Replicate Original 2 Resolution Ratio (3) Pass (4) (5)

(1) (1) (2)

SR-283-324 OL-5-26, SP-5 QC Result

<MDA Result

<MDA Uncertainty Yes (6)

SR-283-337 OL-5-27, SP-5 QC 7.25E-02 1.90E-01 9.38E-02 1.5 2.62 No SR-283-350 OL-5-28, SP-5 QC <MDA <MDA Yes SR-283-363 OL-5-30, SP-5 QC 3.56E-01 4.11E-01 1.35E-01 5.3 1.15 Yes SR-283-375 OL-5-31, SP-4 QC 8.40E-02 5.07E-02 4.04E-01 0.4 0.60 Yes SR-283-393 OL-5-32, SP-9 QC 4.48E-01 3.23E-01 1.32E-01 6.8 0.72 Yes SR-283-402 OL-5-33, SP-5 QC <MDA <MDA Yes (6)

SR-283-415 OL-5-34, SP-5 QC 1.93E-01 6.93E-02 9.13E-02 4.2 0.36 No SR-283-428 OL-5-35, SP-5 QC <MDA <MDA Yes SR-283-441 OL-5-36, SP-5 QC 6.22E-01 3.50E-01 1.74E-01 7.1 0.56 Yes SR-283-455 OL-5-37, SP-6 QC 3.11E-01 5.15E-01 1.22E-01 5.1 1.66 Yes SR-283-467 OL-5-38, SP-5 QC <MDA <MDA Yes SR-283-479 OL-5-39, SP-4 QC <MDA <MDA Yes SR-283-493 OL-5-40, SP-5 QC <MDA <MDA Yes SR-283-506 OL-5-41, SP-5 QC <MDA <MDA Yes SR-283-519 OL-5-42, SP-5 QC 3.90E-01 1.58E-01 1.73E-01 4.5 0.41 No (6)

SR-283-531 OL-5-43, SP-5 QC <MDA <MDA Yes SR-283-543 OL-5-44, SP-5 QC <MDA <MDA Yes SR-283-556 OL-5-45, SP-5 QC 3.05E-01 1.52E-01 1.24E-01 4.9 0.50 Yes SR-286-13 OL-5-9, SP-12, QC <MDA < MDA Yes SR-286-20 OL-5-11, SP-6 QC <MDA < MDA Yes SR-286-31 OL-5-29, SP-5 QC < MDA < MDA Yes Table 3 Notes:

1. Sample comparison is made for Cs-137 Results. All Co-60 replicate samples are also < MDA.

2. The sample resolution is calculated as the ratio of the original sample uncertainty and the sample measured activity concentration.

3. The ratio of QC to original sample results.

4. See the table below for ratio vs. resolution acceptance criteria

5. If both original and QC sample are < MDA, they are considered to be in agreement.

Plum Brook Reactor Facility FSSR, Attachment 18 Appendix E Rev. 0, Page 8 of 8

6. Sample pairs which did not meet the acceptance criteria. As explained in footnote 32 on page 40 of the main body text (reproduced 1

below) , an evaluation is performed of each failure to meet the acceptance criteria. All were so evaluated and found to be acceptable.

QC Sample Comparison Acceptance Criteria Resolution Ratio

<4 0.4 - 2.5 4-7 0.5 - 2.0 8 - 15 0.6 - 1.66 16 - 50 0.75 - 1.33 51 - 200 0.8 - 1.25

> 200 0.85 - 1.18 Acceptance Criteria Notes:

1. Acceptance Criteria are per FSS Plan Section, Section 12.7.2.

2. When comparing a positive result to a <MDA result, assume that the sample result is positive at the MDA and use the MDA value to determine the ratio.

1 When the acceptance criterion is not met, an investigation is performed to determine the cause and corrective actions. The investigation may include repetition of the replicate QC measurement or other actions determined by the FSS/Characterization Supervisor. If upon repetition, the acceptance criterion is still not satisfied, the result may be accepted if the original and QC replicate measurement are both are below the DCGL W for the survey unit, the FSS/Characterization Supervisor reviews the investigation and concurs that the measurements are acceptable and the results of the investigation are documented in the Survey Request Summary and Close-out (Procedure CS-01, Survey Methodology to Support PBRF License Termination).