ML052140149

to Calculation E900-05-009, Westinghouse and Adjacent Areas Open Land - OL2 - Survey Design, Appendix a to Final Status Survey Report for Saxton Nuclear Experimental Corporation Open Land Area OL2.

ML052140149
Person / Time
Site:	Saxton File:GPU Nuclear icon.png
Issue date:	04/29/2005
From:	Cooper W FirstEnergy Corp
To:	Office of Nuclear Reactor Regulation
References
E900-05-009, Rev 0
Download: ML052140149 (31)

Text

SNEC CALCULATION COVER SHEET CALCULATION DESCRIPTION Calculation Number Revision Number Effective Date Page Number E900-05-009 _ _.5/g/o.S 1 of 9 Subject Westinghouse and Adjacent Areas open land - 0L2 - Survey Design Question I - Is this calculation defined as 'in QA Scope? Refer to definition 3.5. Yes ED No C Question 2- Isthis calculation defined as a Design Calculation"? Refer to definitions 3.2 and 3.3. Yes 0 No i NOTES: If a Yes answer is obtained for Question 1, the calculation must meet the requirements of the SNEC Facility Decommissioning Quality Assurance Plan. If a 'Yes' answer is obtained for Question 2, the Calculation Originator's Immediate supervisor should not review the calculation as the Technical Reviewer.

DESCRIPTION OF REVISION APPROVAL SIGNATURES -  :

Calculation Originator W. J. Cooper CHP/ Date 3 Technical Reviewer R. Holmes/ Date / /Q 0 Additional Review A. Paynterl C Date cZ Additional Review Date

SNEC CALCULATION SHEET Calculation Number Revision Number Page Number ESOO-05-009 0 Page 2 of 9 Subject Westinghouse and Adjacent Areas open land - OL2 - Survey Design 1.0 PURPOSE 1.1 The purpose of this calculation is to develop a survey design for the Saxton Nuclear Experimental Corporation \Westinghouse and Adjacent Open Land" OL2 areas that are located north of the SNEC facility site. The area (0L2) is approximately 5300 square meters, and is a Class 1 survey area. Because the survey area exceeds the 2000 square meter limitation in the SNEC LTP (Reference 3.5) Table 5-5 for maximum class 1 open land survey unit area, this survey area is subdivided into three survey units:

1.1.1 MA8-5, consisting of the concrete pads at the north end of the area 1.1.2 0L2-1, which consists of the roughly 20 meter wide by 100 meter long arc of open land outside the Westinghouse area fence and bounded by portions of OL10 and OL4 1.1.3 0L2-2, consisting of the roughly 50m by 60 m by 78 m triangular open land area inside the Westinghouse area fence.

1.2 This survey design applies to the two open land areas (0L2-1 and 0L2-2) only. The design for the concrete pads will be provided in a separate calculation for simplicity. The general layout of these two survey units is shown on Attachment 1-1.

1.3 An approximately 1525 square meter portion of OL2 that is inside the switchyard fence will be surveyed with the rest of the switchyard under a separate design package (E900 002).

1.4 Fences present in and / or bordering the survey units will be surveyed under a separate design package.

2.0

SUMMARY

OF RESULTS The following information should be used to develop a survey request for this survey unit. The effective DCGLw value is listed below. The US NRC has reviewed and concurred with the methodology used to derive these values, See Attachment 2-1 to 2-4.

Table 1, DCGLw Values I Volumetric DCGLw (pCUg-Cs-I371 l 5.73 (4.3 A.L.)

NOTE: A.L. is the site Administrative Umit (75% of effective DCGLw) 2.1 Survey Design 2.1.1 Scanning of soil (and fill materials) shall be performed using a 2' D by 2" Nal detector with a Cs-137 window setting (Reference 3.1). The window will straddle the Cs-137 662 keV full energy peak width (see typical calibration information on Attachment 3-1).

2.1.2 The instrument conversion factor/efficiency shall not be less than that assumed on Attachment 3-1 as 205.6 cpmluR/h - Cs-137.

2.1.3 Other instruments of the type specified in Section 2.1.1 above may be used during the final status survey (FSS), but must demonstrate detection efficiencies at or above the value listed in Section 2.1.2 above.

.SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-009 0 Page 3 of 9 Subject Westinghouse and Adjacent Areas open land - OL2 - Survey Design Table 2, Soil Scanning Parameters MDCscan (pC11g) - Cs-137 Scan Speed (cmlsec) Maximum Distance from Surface Action Level  % Coverage 6.2 25 4- (gap between detector face & soil surface) > 175 ncpm 100%

See Attachment 4 2.1.4 The action level specified is based on the MDCscan. This is adequate since the MDCscan is expected to be less than the DCGLw times the area factor.

2.1.5 If a count rate greater than the action level of Table 2 is encountered during the scanning process, the surveyor should stop and locate the boundary of the elevated area. The surveyor should then mark the elevated area with stakes or other appropriate marking methods. Sample the elevated areas(s) lAW SNEC procedure E900-IMP-4520.04 (Reference 3.2), and Section 2.2 of this document.

2.1.5.1 Class 1 soil should be scanned using a serpentine pattern that is -0.5 meters wide.

2.1.5.2 This is a class 1 survey area. All accessible surfaces are required to be scanned. There is a large pile of PRI soil in the north portion of 0L2-2. This pile should be removed prior to completion of the survey, so that the soils under the pile are subjected to the survey requirements of this design. See Attachment 1-1 for grid layout for the two survey units.

2.1.5.3This soil pile is an established PRI area, and was previously 100% scan surveyed and sampled during an automated conveyor measurement campaign in the summer of 2003 as SR062 (References 3.15 and 3.16). The results of this survey indicate that the soil pile meets LTP residual activity release requirements and the thoroughness of the survey is adequate to meet FSS measurement needs. Forty-seven composite samples were collected of the scanned soil, all of which are less than 25 percent of the AL in this design.

Additionally, the automated scanning (Reference 3.16) achieved an alarm setpoint less than 70% of the AL and detection limits substantially below the alarm setpoints. This soil pile is expected to be used as backfill elsewhere around the plant.

2.1.5.4 Areas that cannot be accessed should be clearly noted along with the reason for not completing the scan in that area.

2.1.6 The minimum number of soil sampling points indicated by the COMPASS computer program (Reference 3.3) is 1 for each of the two survey units (see COMPASS output on Attachment 7-1 to 76). Sampling depth should be IAW Section 2.2. The MDCscan (soil) exceeds the effective administrative DCGLw Cs,137 (6.2 pCilg MDCscan @300cpm bkg > 4.3 pCVg AL) but given the area factor for the assumed 1 meter squared elevated area and the effective sample area, the scan MDC meets MARSSIM requirements.

2.1.7 VSP (Reference 3.4) is used to plot all sampling points on the included diagrams.

The actual number of random start systematicaliv soaced measurement points mav

SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-009 0 Page 4 of 9 Subject Westinghouse and Adjacent Areas open land - OL2 - Survey Design be greater than that required by the Compass computer code because of any or all of the following:

• placement of the initial random starting point (edge effects),

• odd shaped diagrams, and/or

• coverage concerns (see Attachment 6-1 to 6-4 for VSP sampling point locations) 2.1.8 The starting points for physically locating sample sites in the survey unit are based on measurements from site grid pins (see diagram on Attachment 6-1 and 6-3).

Remaining soil sampling points are positioned using coordinates developed from these markers and listed on Attachments 6-2 and 6-4.

2.1.9 Some sampling points may need to be adjusted to accommodate obstructions within the survey area. Contact the SR coordinator to report any difficulties encountered when laying out systematic grid sampling points.

2.1.10 Two embedded pipes are present in the survey unit, an (approximately) 8 foot long 8 inch diameter drainage pipe from the Westinghouse area in grid BE127, and a >50 foot long 12 inch diameter corrugated steel pipe exiting from the switchyard area in grid BE128. Scan survey these pipes with the 2 x 2 Nal detector, reaching in as far as possible (e.g. put the detector on a stick), with the same AL as for the open land areas. The 8 inch pipe can be accessed from both 0L2-1 and 0L2-2. The up-drainage end of the 12 inch pipe is in the switchyard, which is to be surveyed based on a separate design.

2.1.11 A chain link fence is present in the survey area and essentially serves as the dividing line between 0L2-1 and 0L2-2. A second fence section separates 0L2-2 from the switchyard. These fences will be surveyed later to either RP release criteria or FSS based on determination of final disposition.

2.1.12 A sample of the 1 to 2 meter deep layer will be collected from grid BB128. This is a biased sample location in addition to the MARSSIM based design to confirm the conditions below 1 meter due to the history of remediation to 4 feet as noted in section 4.8 below.

2.1.13 When an obstruction is encountered that will not allow collection of a sample, contact the cognizant SR coordinatorforpermission to delete the sampling point.

NOTE If remediation actions are taken as a result of this survey, this survey design must be revised or re-written entirely.

2.2 Sample elevated areas(s) IAW SNEC procedure E900-IMP-4520.04 (Reference 3.2) and the following.

SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-009 0 Page 5 of 9 Subject Westinghouse and Adjacent Areas open land - OL2 - Survey Design NOTE Since the site surface dose model is 1 meter in depth, samples representative of the entire one meter thick dose model layer must be collected to satisfy the sampling requirements of Section 2.1.5 (of this document). This should be done by obtaining a well mixed sample of an entire 1 meter deep core. Section 4.2.3, 4.2.6 or 4.2.7 of site procedure E900-IMP-4520.04 are applicable when satisfying Section 2.1.5. Sampling due to an instrument alarm condition should also be of the entire 1 meter of soil/material.

2.2.1 Clearly mark, identify and document all sample locations.

2.2.2 Sample any location that is above the action level cited is Table 2.

2.2.3 Maintain chain-of custody requirements on all design fixed point and action level samples (Reference 3.14).

3.0 REFERENCES

3.1 SNEC Calculation No. E900-03-018, "Optimize Window and Threshold Settings for the Detection of Cs-1 37 Using the Ludlum 2350-1 and a 44/10 Nal Detector", 8/7/03.

3.2 SNEC Procedure E900-IMP-4520.04, "Survey Methodology to Support SNEC License Termination".

3.3 COMPASS Computer Program, Version 1.0.0, Oak Ridge Institute for Science and Education.

3.4 Visual Sample Plan, Version 3.0, Copyright 2004, Battelle Memorial Institute.

3.5 SNEC Facility License Termination Plan.

3.6 SNEC Procedure E900-IMP-4500.59, "Final Site Survey Planning and DQA".

3.7 SNEC survey Nal measurements in 0L2 3/8/05 3.8 GPU Nuclear, SNEC Facility, 'Site Area Grid Map", SNECRM-020, Sheet 1, Rev 4, 1/18/05.

3.9 SNEC Calculation No. E900-03-012, Effective DCGL Worksheet Verification.

3.10 "1994 Saxton Soil Remediation Project Report", 5/11/1995 3.11 SNEC Procedure E900-IMP-4520.06, "Survey Unit Inspection in Support of FSS Design".

3.12 NUREG-1575, 'Multi-Agency Radiation Survey and Site Investigation Manual", August, 2000.

3.13 Microsoft Excel 97, Microsoft Corporation Inc., SR-2, 1985-1997.

3.14 SNEC Procedure E900-ADM-4500.39 "Chain of Custody for Samples' 3.15 SNEC survey SR0062 3.16 uFinal Report for Survey of Debris Pile", Revision 1 9/22/2003 Shonka Research Associates 3.17 SNEC sample database 3.18 SNEC Calculation E900-04-005 "CV Yard Survey Design - North West Side of CV"

Gus SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-009 0 Page 6 of 9 Subject Westinghouse and Adjacent Areas open land - OL2 - Survey Design 4.0 ASSUMPTIONS AND BASIC DATA 4.1 The COMPASS computer program is used to calculate the required number of random start I systematic samples to be taken in the survey unit (Reference 3.3).

4.2 Scoping and post-remediation soil samples from this area (data obtained from Reference 3.17) are used as the initial estimate of variability. These results are shown on Attachment 8-1. The grid locations where these samples were taken are shown on Attachment 1-1.

4.3 The MARSSIM Sign Test (Reference 3.12) will be applicable for this survey design. No background subtraction will be performed under this criteria during the DQA phase.

4.4 The required number of fixed survey points as determined by COMPASS are then located on the survey map for the survey unit by the Visual Sample Plan (VSP) computer code (Reference 3.4).

4.5 Reference 3.5 and 3.6 were used as guidance during the survey design development phase.

4.6 Background has been measured in the area, and ranges from about 100 cpm to about 150 cpm (Reference 3.7).

4.7 The determination of the physical extent of this area is based on the drawing Reference 3.8.

4.8 Remediation History OL2 is an open land area. Portions contained installed buildings (the Westinghouse area) during power operations. The buildings and building pads from plant operations have been removed. Approximately 700 square meters of 0L2, particularly in the southern portion of 0L2-2 were remediated during the 1994 soil remediation project (Reference 3.10). In addition, the storm drain piping, wier and wier outfall pipe were removed. Soil remediation depths varied but were typically 0.5 to 1 foot. Approximately 100 square meters (mostly) in the grid labeled as 1-7 on Attachment 1-1 (or grid BB128 on Reference 3.8) was remediated to 4 feet. As a result of the remediation effort, all initial or post-remediation samples in the applicable portion of OL2 as shown in Reference 3.10 were well below the adjusted effective DCGLw. Subsequent to remediation the area has been used for soil screening and equipment storage. Additional soil remediation was subsequently conducted in 1993. A soil sample of 284 pCi/gm was obtained from grid BB122 in May of 2003 (Reference 3.17) and subsequently remediated.

4.9 This survey design uses Cs-137 as a surrogate for all SNEC facility related radionuclides in the survey unit. The effective DCGLw is the Cs-1 37 DCGLw from the SNEC LTP (6.6 pCilg) adjusted (lowered) to compensate for the presence (or potential presence) of other SNEC related radionuclides. In addition, an administrative limit (75%) has been set that further lowers the permissible Cs-137 concentration to an effective surrogate DCGLw for this survey area.

4.10 The sample database used to determine the effective radionuclide mix for the 012 area has been drawn from samples that were assayed at off-site laboratories. This list is shown on Attachment 2-1 through 2-3, and includes twenty-one analysis results. Review of the data shows several radionuclides were not positively identified at any significant concentration.

SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-009 0 Page 7 of 9 Subject Westinghouse and Adjacent Areas open land - OL2 - Survey Design These radionuclides have been removed from the data set and are not considered further as any minor contribution is accounted for by the administrative reduction of the surrogate DCGLw to 75% of the surrogate DCGLw based on the identified nuclide ratios.

Radionuclides remaining include H-3, Co-60, Sr-90, and Cs-137. Additionally, the data shows Cs-137 to be the predominant radioactive contaminant (based on activity) found in the area.

The decayed set of sample results were input to the spreadsheet titled "Effective DCGL Calculator for Cs-1 37 (Reference 3.9) to determine the effective volumetric DCGLw values for the area. The output of this spreadsheet is shown on Attachment 2-4. Attachments 2-1 through 2-4 are copied from Reference 3.18 and were previously approved.

The Nal detector scan MDC calculation is determined based on a 25 cm/sec scan rate, a 1.38 index of sensitivity (95% correct detection probability and 60% false positive) and a detector sensitivity of 205.6 cpmluR/h for Cs-137. Additionally, the detection system incorporates a Cs-137 window that lowers sensitivity to background in the survey unit. The resulting range of background values varies from about 100 cpm to -150 cpm.

4.11 The survey unit described in this survey design was inspected after remediation efforts were shown effective. A copy of the 0L2 specific portion of the SNEC facility post-remediation inspection report (Reference 3.11) is included as Attachment 9-1.

4.12 No special area characteristics including any additional residual radioactivity (not previously noted during characterization) have been identified in this survey area.

4.13 The decision error for this survey design is 0.05 for the a value and 0.1 for the P value.

4.14 "Special measurements" (as described in the SNEC LTP sec 5.5.3.4) are included in this survey design. Two in-ground pipes will be surveyed as part of 0L2-1 and 012-2. A Biased sample of grid BB128 of soil from the I to 2 meter layer will be collected to confirm conditions at that depth due to the previous remediation to 4 feet as noted in section 4.8 above.

4.15 No additional sampling will be performed lAW this survey design beyond that described herein.

4.16 SNEC site radionuclides and their individual DCGLw values are listed on Exhibit I of this calculation, derived from Table 5-1 of Reference 3.5.

4.17 The survey design checklist is listed in Exhibit 2.

4.18 Area factors are shown as part of COMPASS output (see Attachment 7-1 and 7-4) and are based on the Cs-1 37 area factors from the SNEC LTP.

5.0 CALCULATIONS 5.1 All calculations are performed internal to applicable computer codes or within an Excel (Reference 3.13) spreadsheet.

6.0 APPENDICES 6.1 Attachment 1-1, is a diagram of survey units 012-1 and 012-2.

SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-009 0 Page 8 of 9 Subject Westinghouse and Adjacent Areas open land - OL2 - Survey Design 6.2 Attachment 2-1 to 2-4 is the DCGLw calculation logic and sample results from the OLI and OL2 areas in addition to the DCGL calculation sheets (decayed to January 15, 2004).

6.3 Attachment 3-1, is a copy of the calibration data from typical Nal radiation detection instrumentation that will be used in this survey area.

6.4 Attachment 4-1, is the MDCscan calculation sheet for volumetric materials in pCi/g.

6.5 Attachment 5-1, is the MicroShield dose rate calculation results for 6" thick soil used to determine the exposure rate from a 1 pCi/cm3 Cs-137 source term in a end-cylinder geometry.

6.6 Attachment 6-1 to 6-4, show the randomly picked scan locations (from VSP) and reference coordinates for the 0L2-1 and 012-2 areas.

6.7 Attachment 7-1 through 7-6, are COMPASS output for the OL2-1 and 0L2-2 areas showing the number of sampling points in the survey unit, area factors, and prospective power.

6.8 Attachment 8-1, is the soil variability results for selected soil samples from the OL2 area based on data from Reference 3.17.

6.9 Attachment 9-1, is the results of the inspection report for the OL2 area.

Exhibit I SNEC Facility Individual Radionuclide DCGL Values (a) 25 mremly Limit 4 mremly Goal 25 mremly Limit (All Pathways) (Drinking Water)

Radionuclide Surface Area Open Land Areas Open Land Areas (b)

(dpni/100cm 2 ) (Surface & Subsurface) (Surface & Subsurface)

(pCilg) (pcilg)

Am-241 2.7E+01 9.9 2.3 C-14 3.7E+06 2 5.4 Co-60 7.1 E+03 3.5 67 Cs-137 2.8E+04 6.6 397 Eu-152 1.3E+04 10.1 1440 H-3 1.2E+08 132 31.1 Ni-63 1.8E+06 747 1.9E+04 Pu-238 3.OE+01 1.8 0.41 Pu-239 2.8E+01 1.6 0.37 Pu-241 8.8E+02 86 19.8 Sr-90 8.7E+03 1.2 0.61 NOTES:

(a)While drinking water DCGLs will be used by SNEC to meet the drinking water 4 mremly goal, only the DCGL values that constitute the 25 mremly regulatory limit will be controlled under this LTP and the NRC's approving license amendment.

(b) Listed values are from the subsurface model. These values are the most conservative values between the two models (i.e.,

surface & subsurface).

?-- SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-009 0 I Page 9 of 9 Subject Westinghouse and Adjacent Areas open land - 0L2 - Survey Design Exhibit 2 Survey Design Checklist Calculation No. Location Codes E900-0S-009 OL2 (Westinghouse and adjacent areas)

Status Reviewer iTEM REVIEW FOCUS (Circle One) Initials & Date I Has a survey design calculation number been assigned and is a survey design summary WA (AI1 5 description provided? ___D_

2 Are drawings/diagrams adequate for the subject area (drawings should have compass Ye A 2reAdr aw ngs/ iagr a s ad quat for headings)? I 3 Are boundaries property identified and is the survey area classification clearly indicated? Ye N/A 4 Has the survey area(s) been properly divided into survey units IAW EXHIBIT 10 (I N/A'1 5 Are physical characteristics of the area/location or system documented? e N/A .

6 Is a remediation effectiveness discussion Included? WA 7 Have characterization survey and/or sampling results been converted to units that are .tN/A comparable to applicable DCGL values? 11s3' 8 Is survey and/or sampling data that was used for determining survey unit variance included? Yes NWA q 9 Is a description of the background reference areas (or materials) and their survey and/or Ye N/A sampling results Included along with a Justification for their selection? Ye 10 Are applicable survey and/or sampling data that was used to determine variability included? Yes, N/A "11/

11 Will the condition of the survey area have an impact on the survey design, and has the Yes(q 1 probable impact been considered in the design? T/K 12 Has any special area characteristic including any additional residual radioactivity (not previously noted during characterization) been identified along with its impact on survey Yes(sZ q

design?

13 Are all necessary supporting calculations and/or site procedures referenced or Included? Ye N/A 14 Has an effective DCGLw been Identified for the survey unit(s)? X NIA 9/!?5.

15 Was the appropriate DCGLEmc included In the survey design calculation?es, / ql/flq 16 Has the statistical tests that will be used to evaluate the data been identified? N, W/A IJ . /0 17 Has an elevated measurement comparison been performed (Class I Area)? Yes, 18 Has the decision error levels been identified and are the necessary justifications provided? Ye , N/A 19 Has scan instrumentation been Identified along with the assigned scanning methodology? es N/A 20 Has the scan rate been identified, and Is the MDCscan adequate for the survey design? es N/A litICK 21 Are special measurements e.g., In-situ gamma-ray spectroscopy required under this design. Y N/A and is the survey methodology, and evaluation methods described?

22 Is survey instrumentation calibration data included and are detection sensitivities adequate? N q 23 Have the assigned sample and/or measurement locations been clearly identified on a diagram e N/A q1 or CAD drawing of the survey area(s) along with their coordinates? W I1/

24 Are investigation levels and administrative limits adequate, and are any associated actions

__ _ _clearly indicated? _________

25 For sample analysis, have the required MDA values been determined.?

26 Has any special sampling methodology been identified other than provided in Reference 6.3? Yes, *jj NOTE: a copy of this completed form or equivalent, shall be included within the survey design calculation.

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DCGL Calculation Logic-CV Yard Soil & Boulders Survey Unit: SNEC Containment Vessel (CV) Yard Soil and Bouiders

11.

Description:

The purpose of this calculation is to determine a representative isotopic mix for the CV Yard Soil and associated Boulders from available sample analyses. The effective volumetric DCGLws are then determined from the mean percent of applicable samples.

Ill. Data Selection Logic Tables: The radionuclide selection logic and subsequent DCGL calculations are provided in six (6) tables. These tables were developed using Microsoft Excel. Table explanation is as follows.

Table 1: Data Listing - This table, which has been extracted from a larger database, provides a list of the most representative sample analyses. Results are from scoping, characterization, and pre/post remediation surveys. The samples consist of soil media that was taken in support of the aforementioned surveys. As applicable, a sample number, sample location/description, radionuclide concentration, analysis date are provided for each sample. Positive nuclide concentrations are noted with yellow/shaded background fields while MDA values are noted in the gray shaded fields.

Table 2: Decayed Listing - This table decays the data from Table 1. Half-life values (days) are listed above each respective nuclide column. Samples are decayed from the respective analysis date to January 15, 2004. Positive results are denoted in a yellow background field while MDA values are noted in the gray shaded fields.

Table 3: Decayed Listing of Positive Nuclides & MDAs Removed - This table provides the best overall representation of the data. Non-positive nuclide columns have been removed as well as all the MDA values. Therefore, 11 nuclides have been reduced to four (4).

Table 4: Ratio to Cs-1 37 for Positive Nuclides - This table provides the calculation methodology for determining the surrogate ratio to Cs-1 37 for each radionuclide. From this information the mean, sigma, and mean % of total are calculated. The mean % of total values is used to calculate the volumetric DCGLW per MARSSIM equation 1-14. See Table 5. Note that the mean percent values were averaged using only the positive sample results in each column. In some cases only a single nuclide value (e.g. Sr-90) had a positive result. This value is listed as the value in the mean result field. This results in higher "mean percent of total" values in the mix, which are conservative.

Note: From Table 4 only the "mean % of total" values are used as input to the "Effective DCGL Calculation Spreadsheet" as Illustrated in Table 5.

Table 5: Effective DCGL Calculator for Cs-1 37 (in pCVg) - This table provides the surrogate volumetric modified Cs-137 DCGLW calculation results from data derived from Table 4.

IV. Summary - Since the CV Yard and Boulders are volumes of soil or rock material, existing in place or in a pile, the release limit is primarily based on the volumetric DCGLW. Using the above data selection logic tables the calculated Cs-137 volumetric DCGLW is 5.73 pCi/g. This value will be reduced by 25% as part of SNEC's requirement to apply an administrative limit as discussed in the License Termination Plan (LTP).

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TABLE I - Data Listina (pCi'a

_ SNEC SmlNoLoc~ationlDesl CVTunn I CVTunnelSediment 9167E.00 1.26E.0 1.25E.03 1.101E01 5.50E.0t 2.20E.01 4.47E+0109.34E.0 4.0AM+00 1.30E-01 2 SX95L992a9 rSubsulace Sample B 2?,

3 SXSL1063 NorthCVYardSoil6A-1127, 8 t.92E-02 3.77E.00 2.1MOM :1. *01 I 5.25E1.2 SXSLI089 NorthCVYardSoilAY127,810'el.Samle 3.OL1 4.9M*00 2.10E001 T7W+0 I &.2BE-02 6 SXSL1115 ilorlh CVYardSoilAY-128,t04' E 2.43-02 41E.-00 2.1i1E41 7.1E40 I 5.71EJ02 6 SXSL1122 NortbCVYardSoilAY-129, 7981 3M4E+0 3.81*E00 O2.01 8791*0 i.62E02 SXSL1130 4.99kE00 2.79142 1.21EA12 I 3.55E100 9

SXSL11132 SXSL270 VYardSoilAX24,803'El,Sample #4,OLt 2.98E.00 W5.M5E I 1 2,26E-01 2.59E500 2.31Et01 1A49E.1I &.56E42 1.64E.1 E 7.46E02 3.701-E2 7.00E03 r

6A46E02 5.27100 7.0E013 I 2.1E+010 2.31E.0F 2 .tsE-et 9310 1.

1.281 98910E42 t.34C-02 6.61W+00 7J.0E.02 10 SXSL1281 AX.12 4.38E+00 t.9tE.00 E400 0 7.71100 4.001-02 11 SXSL2649 6.00E.01 .87E.00 1.83E0 1 51E*0 13 XS2t71 5.60E.01 14 IS 10 SXSL2872 --CV SXSL3140 SXSIL3142 EastCVYard,SoilPie 0 6' onWestSide0 Depth),OL1 1 Olt L1

.1 .8w1 1.00E.01 8,25E.01 6.0OE.01 7.001-3 5.80E-03 I 5.80E103 3.991-E1 .60E1-02 31.400 3.001-02 17 SXSL3146 1.26E100 4.0E-103I 5.0i'DE3 I 5.013 I 3376101 .30EO.2I3.69E410 3.J0E.02 16 SXSL3149 3.OOE401 19 SXSL3153 EastCVY.

211 5251L4142 CVYardS 22 SXSL4143 CVYardS 23 SXSL4149 I CVYardS P1-7,O11 2241E40 I 2.7E.02 I 7.00E.02 3.90E100 1ARI F 2 . Da.ecaverd j isinn SfinrCil I T112 T112 T12 T1,2 T1Q2 T11 T1Q T1t2 T1Q T12 T1/2 Decal Date 4485.27 10446.15 1925.23275 11019.5925 157861.05 32050.6875 5259 2092882.5 36561,525 4967.4 nI SampleN101 SEC H3 Sr.O9 Co-o Cs-137 Am.241 Pu-238 I CVTunnel CV1 7.97100 9.01E+00 8.59c.4 1.17Ee03 1.7'E01 5.37E.01 100 [31* .Febraa 1'4,200 06 5.36E-01 4.208*00o~ 8I.55E 0 asMss1e . A4,2.2

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2.78Ee00 1271-02 1.24E+00 S91-02 O1 1.21iE1 5.lOE-02 1 566 SXSL11S 4.47E.00 1.74E.00 1.36E41 4O7E02 June 29,2002 SXS1122 aorbhCVYard Soil Al 3.15E+00 4.60E+00 1.83E.01 SXS111130 HorbhCVYard SoilAX-129, 03' El. Sample. 4, OL1 51c+00 2.44E-02 2.18E'-01 149E-01 SXSL132 iaorb CV Yard Soil AZ-130, Samplet 6, OL1 2.73E+o00 2.50EO00 1.64E41 Side S From CV, C0'El.,O11 2.18Er01 3.69E.02 ,.6EJ03 I 7.MM103 81.0E40 I 3.93E-W I Juh2 21.2001 903 4.14E+.00l 309E0 l 151E-02 l701E-03 1 .691E0 l 4'.00E40 1 July26,_2001 _903 5.74E401 9.7E-03 1.31E.02 I t1.01-02 1.71E+00 I 1.83E-11 1.731i*0 l February 13,2002i 701 13 5XRL2371 March 6, 2002 660 14 SXSL2672 1S SXSL3140 Est CVY 6on West Side(6' Depth), OL1 SXSL1142 _ SoilPile, CV Yard,T ,-. rm S1J.- -

-eeEst l. 1,:1fl41, 1 Iwas 5.81E.01 frwx r/n [a51 DIrJEl, ULl SXSL3145 EastCVYard, Soil Pile 0 3on East Side (60Depth), OL1 1 1.76E+0 l ;.6NE;2 1 1.22E0oo 3.99.E03 4.95E103 5.001E03I 3.52E401 830E.02 3.65E00 August 30,2 SXSL3149 E047E02 6.93:42 2.90E-01 I I I I I I I __ I__August 13, 1, 520 SXSL31E3 2.91E.01 2.99E-031 4.95103 5.004103 3.21E-01 I 8.7eE-02I 4.14E10 I 4.75E-02 August 30,2002 503 SXSL4142 October2,2003 1 105 214_

22= SXSL4143 CV Yard Soil- West Sid 23 SXSL4149 CV Yard Soil - West Sid KEY I IYellow Shaded Background = Positive Result I IlGray Shaded Background = MDA 2 C(

TABLE 3 - Decaved Listina of Positive Nuclides & MDAs Removed (oCUal SNECSample No Locationl~escription l H-3 Sr-90 Co-60 Cs-137 Total pCi'g 1 CV Tunnel CV Tunnel Sediment Composite, OL1 9.01E+00 8.59EM-1 1.17E+03 1178.89 2 SX9SL99219 Subsuface Sample #29 (0-5'), AY-128, 01 5.36E-01 0.54 3 SXSL1063 North CV Yard Soil EA-127, 812' El,Sample # C,012 4.20E+w0 8.55E-41 6.05 4 SXSL1089 North CV Yard Soil AY-127, 810 El,Sample # 3, OL1 2.78E+00 1.24E+00 4.02 5 SXSL11I5 North CV Yard Soil AY-128, 804 El, Sample #2,OL 4A7E.OO 1.74E+00 6.21 6 SXSL1122 North CV Yard Soil AY.129, 798' El, Sample # 2, 01 3.t5E 0 _w 4.SOE+00 7.76 7 SXSL1i3O North CV Yard Soil AX-129. 803 El,Sample # 4, OL1 4.58E+00 2.44E-02 2.18E+01 26.42 8 SXS1132 North CV Yard Soil AZ-130, Sample # 6, 011 2.73E+w_ 2.50E+00 6523 9 SXSLI270 AX-129, 3-3, Soil, CV SESide 5 From CV, 800' El., OL1 2.18E+01 21.82 10 SXS1281 AX-128, 3-1, Soil, CV Tunnel East 5 From CV, 800 El, OL1 4.14E+oo 4.14 11 SXSL2649 Anulus Well, A-2, 8 to 10' Depth, OL1 5.74E-01 0.07 13 SXSL2871 CV Area - East Yard Dirt Pile - Middle, 112Way Up, 011 5.37E-01 0.54 14 SXSL2872 CV Area - East Yard Dirt Pile - Bottom (also top center), OL1 9.58E-02 0.10 15 SXSL3140 East CV Yard, Soil Pile p' 6on West Side (6 Depth), OL1 7.99E-01 0.80 16 SXSL3142 Soil Pile, CV Yard, Three Feet on East Side, SR-37, 01 5.81E-01 0.58 17 SXSL3145 East CV Yard, Soil Pile a 3' on East Side (68 Depth), OL1 1,22E+00 1.22 18 SXSL3149 Soil Pile, CV Yard, Six Feet on East Side, SR-37, OL1 2.90E-01 0,29 19 SXSL3163 East CV Yard, Soil Pile a Top (V Depth), OL1 2.91E-01 0.29 21 SXSL4142 CV Yard Soil - West Side, API-7, 011 = 8.94E-01 0.89 22 SXL54143 CV Yard Soil - West Side, APi-7, OL1 4.97E.01 0.50 23 SXSL4149 CV Yard Soil - West Side, AP1-7, 01 6.74E-02 3.87E+00 3.94 TABLE 4 - Ratio To Cs-137 for Positive Nuclides SNECSample No LocationlOescriptlon H-3 Sr-90 Co-S0 Cs-i37 Total I CV Tunnel CV Tunnel Sediment Composite, OL1 7.71E.03 7.35E-04 1.OOE+00 1.01 2 SX9SL99219 Subsuface Sample #29 (0-5'); AY-128, OL1 1.OOE+00 1.00 3 SXSL1063 North CV Yard Soil EA-127, 812' El, Sample # 5 012 4.91E+00 1.OOE+00 5.91 4 SXSL1089 North CV Yard Soil AY-127, 810' El, Sample # 3,011 2.23E+00 1 .0+E00 3.23 5 SXSLI111 North CV Yard Soil AY-128,804' El, Sample #2, OL1 2.57E+00 1.00E+00 3.57 6 SXSL1122 tlorth CV Yard Soil AY-129, 798' El, Sample # 2, OL1 6.85E-01 1.OOE+0O 1.68 7 SXSL1130 North CV Yard Soil AX-129, 803' El, Sample # 4, 011 2.10E-01 I1.12E-03 1.OOE+00 1.21 8 SXSL1132 North CV Yard Soil AZ-130, Sample # 5, 011 1.09E+00 1.OOE+0O 2.09 9 SXSL1270 AX-129, 3-3, Soil, CV SESide 5 From CV, 800' El., 011 1.OOE+0O 1.00 10 SXSL1281 AX-128, 3-1, Soil, CV Tunnel East 5 From CV, 800' El, OL1 1O 0E+OO 1.00 11 SXSL2649 Anulus Well, A-2, 5to 10' Depth, OL1 1.OOE0O 1.00 13 SXSL2371 CV Area -East Yard Dirt Pile - Middle. f2 Wty Up, OL1 1.00c+00 1.00 14 SXSL2872 CV Area - East Yard Dirt Pile - Bottom (also top center), OL1 1.OOE+00 1.00 15 SXSL3140 East CV Yard, Soil Pile a6 on West Side (6" Depth), OLI I.OOE+00 1.00 16 SXSL3142 Soil Pile, CV Yard, Three Feet on East Side, SR-37, OL 1.00E+00 1.00 17 SXSL3145 East CV Yard, Soil Pile @'3on East Side (6" Depth), OL1 1.OOE+00 1.00 18 SXSL3149 Soil Pile, CV Yard, Six Feet on East Side, SR-37,OLI 1.OOE+OO 1.00 19 SXSL3153 East CV Yard, Soil Pile P Top 16"Depth), OLI 1.OOE+00 1.00 21 SXSL4142 CV Yard Soil -West Side, API-7, OL1 i.OOE+OO 1.00 22 SXSL4143 CV Yard Soil -West Side, API-7, OLI 1.O+00 1.00t 23 SXSL4149 CV Yard Soil -Weal Side AP1-7 OL1

__ 1.74E-2 1.00E+00 1.02 2._6.__7_E_0_

.6___E_

,.560 Mean* 1.95E §00 7.71E-03 6.42E-03 1 2.96 Sigma= 1.708 0(110 0,000 t:.,: !' .....

Mean % of Total: 5.7V% l 0.26% l v v2 l 33.74% 100;00%

3

Table 5 CI-t%1 4

2350 INSTIUMENT AND PROBE EFFICIENCY CHART 7/01/04 (Typical 2" by 2" Nal (Cs-137 W)Conversion Factors)

Inst.# Cal Due AP# l Probe # Cal Due cpm/mRlh 98625 5:!'18i05 R& Y 211680 Pk 5/ I 105' 22 14.882 98647 5/18X/(S i &Y 211667 Pk 5/ I518/0.5 218.807 12(42 3 5 181(5 P &Y. 211687 Pk 5/18/f05 20Br 3 117573 5118/05 o0Y ___ _ 21 1674 Pk 5/18/05 .2 12. 1 73

- 'I, 1 7566 4/9/0 5 (;&R I 858'52 Pk 4/13/05 209.862 I 6183 11/ 1 9/04 13&R 206280 Pk 12/12/04 190,907 129429 1 /04 && _____206283 Pk 10/31/04 177185 126198 1 f03/04 I& 'A' _ 9602)I Pk 5/25/05 209.194 126172 6107/05 (i&W 196022 6/07/05 208.302 t,

129440 4/09/05 O&W 210938 Pk- 4/14/05 205.6031 120n 6__08_05 B&W 18 5844 Pk 6/09/05 216.654 I

IJ2)O 1

I Is' I ). .' 1 IC5 s

• )&

I I

rso

&8,I v I .. .. . .

21 . f, II.7,)

2350 INSTRUMET AND PROBE EFFICENCY CHART 7/01/04 (TypIcal 43-68 Beta Efficiency Factors)

IfDcc Iiitrument/Prbc Cal Duc ICeiinonk I . ,!m vgoo 0o 5 -oaq INST . 43-68 PROBE 44-10 PROBE l LPH INST # CI PROBE C/D PROBE C/D BETA ALPHA EFF EFF 79037 04/05/05 122014 04/23/05 = - .D 7, l N/A 126188 127/05 099186 127/05 .28.2% N/A 126218 01/08/05 095080 01/09/05 -_l 27.9% N/A

Nal Scan MDC Calculation I MDCscan = 6.2 pCi / g b = background in counts per minute bi = background counts in observation interval Conv = Nal Detector / meter calibrated response in cpm/uR/hr d = Index of sensitivity from MARSSIM Table 6.5 based on 95% detection, 60% false positive HSd = Elevated measurement spot diameter in centimeters MDCscan = MinimumDetectable Concentration for scanning in pCi/g MDCRI = Minimum Detectable Count Rate in net counts per minute MDCRsurv = MDCRi adjusted for the human performance factor p - in net counts per minute MDER = Minimum Detectable Exposure Rate in uR / hr MSoutput = MicroShield derived exposure rate for 1 pCi/g contaminant in mR/hr Oi = Observation interval in seconds p = human performance adjustment factor - unitless SR = Scanning movement rate in centimeters per second DCGLeq = Net count rate equivalent to the Adjusted DCGL b 300 cpm p= 0.5 HSd = 56 cm SR= 25 cm d= 1.38 Conv = l 205.6 lcpmluR/hr Msoutput = l 1.37E-04 ]mR/hr / pCi/g DCGL = 4.3 pCi/g HSd = 2.24 = Oi (sec) b*Oi = 11.2 = bi (counts)

SR 60 (sec/min) d*sprt(bi)*60 = 123.7 = MDCRi (net counts per minute)

Oi MDCRi = 174.9 = MDCRsurv (net counts per minute) sqrt(p)

MDCRsurveyor = 0.851 = MDER (uR/hr)

Conv MDER = 6.21 = MDCscan pCi/g MSoutput*1000(uR/mR)

MDCsurv*DCGL = 121 = AL net cpm MDCscan -1 qoLO- 0 5- 0 q

MicroShield vS.05 (5.05-00121)

GPU Nuclear Page :1 Fae Ref.

DOS Fie  : MODELMS5 Date:

/ RUn Date  : September 23 2003 Byk Run Time  : 243:26 PM Checkerl Duration  : 00:00:02 Case

Title:

Cs-1 37 Soil

Description:

Model for Scanning Geometry: 8 - Cylinder Volume - End Shields Source Dimensions Height 15.24 cm 6.0 inj Radius 28.0cm 11.0inl Dose Points A l X I Y I Z

1. 1 0cm 25.4cm 0cm C)P 0.0in 10.0in 0.0in Shields

$jf Shield Name I Dimension I Material l Densitv Source a75e+04 crr? Concrete 1.6 Ai Gap Ai 0.00122 Source Input Grouping Method: Actual Photon Energies cz~) Nucfde curies beequerels l Ci/crr? Bolcmff Ba-137m 5.6815e008 2.1 022e+003 1.5136e*006 5.6003e-002 Cs-137 6.0058e 009 22221 e+003 1.60ooe.006 5.9200e.002 Buildup

-4z The material reference is: Source Integration Parameters Radial 50 Crcuerential 50 Y Diection (axial) 50 Results Energy Activity Fluence Rate Fluence Rate Exposure Rate Exposuie Rate MeV photons/see MeV/c~rr/tec MeV/cm'?/sec mRAir mR/hr No Buldup With Buidup No Buildup With Buildup 0.0318 4.352e+01 7.617e06 9.220e-06 6.345e-08 7.680e-08 0.0322 8.030e+01 1.465e-05 1.784e-05 1.179e-07 1.436e.07 in~

0.0364 2922e+01 8.118ee06 1.060e05 4.613e-08 6.024e-08

0. 6616 1.892e+03 7.060e-02 1.260e-01 1.369e-04 2.443e-04 TOTALS: 2045e+03 7.063e-02 1.261e-01 1.371e*04 2446e04

OL2-1 :Open Land Areas outside fence ON

/ OLIO O0

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OL2-2 m :>

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'CD CD o

OL2-1: Fixed Point Dimensions in METERS X Coord Y Coord Label Grid Type East North 96.53 -67.82 FP-1 BA122 Systematic 6.5 2.2 89.36 -55.41 FP-2 BB123 Systematic 9.4 4.6 67.87 -43.01 FP-3 BC125 Systematic 7.9 7.0 82.20 -43.01 FP-4 BC123 Systematic 2.2 7.0 60.71 -30.60 FP-5 BD125 Systematic 0.7 9.4 75.04 -30.60 FP-6 BD124 Systematic 5.0 9.4 10.57 -18.19 FP-7 BF130 Systematic 0.6 1.8 24.90 -18.19 FP-8 BF129 Systematic 4.9 1.8 39.22 -18.19 FP-9 BF128 Systematic 9.2 1.8 53.55 -18.19 FP-10 BF126 Systematic 3.5 1.8 17.73 -5.79 FP-11 BG130 Systematic 7.7 4.2 OL2-1: Fixed Point Dimensions in FEET X Coord Y Coord Label Grid Type East North 316.61 -222.45 FP-1 BA122 Systematic 21.4 7.2 293.11 -181.75 FP-2 BB123 Systematic 30.7 15.0 222.63 -141.06 FP-3 BC125 Systematic 25.8 22.9 269.62 -141.06 FP-4 BC123 Systematic 7.2 22.9 199.13 -100.36 FP-5 BD125 Systematic 2.3 30.8 246.12 -100.36 FP-6 BD124 Systematic 16.5 30.8 34.67 -59.67 FP-7 BF130 Systematic 1.9 5.9 81.66 -59.67 FP-8 BF129 Systematic 16.1 5.9 128.65 -59.67 FP-9 BF128 Systematic 30.2 5.9 175.64 -59.67 FP-10 BF126 Systematic 11.6 5.9 58.16 -18.97 FP-I1 BG130 Systematic 25.4 13.8 North and East values are from each grid ID pin Xcoord and Ycoord are from the reference origin of the drawing - Pin BH131 Attachment 6-2 E900-05-009

OL2-2Westinghouse area 0 t-Fued point reference point SW comer

\ Pin Ba128 OLl __ __ _

Attachment 6-3 E900-05-009

OL2-2: Fixed Point Dimensions in METERS X Coord Y Coord Label Grid Type East North 11.97 4.91 FP-1 BA127 Systematic 3.0 4.9 25.37 4.91 FP-2 BA126 Systematic 6.4 4.9 38.77 4.91 FP-3 BA125 Systematic 9.8 4.9 52.17 4.91 FP-4 BA123 Systematic 3.2 4.9 5.27 16.52 FP-5 BB128 Systematic 6.3 6.5 18.67 16.52 FP-6 BB127 Systematic 9.7 6.5 32.07 16.52 FP-7 BB125 Systematic 3.1 6.5 11.97 28.12 FP-8 BC127 Systematic 3.0 8.1 25.37 28.12 FP-9 BC126 Systematic 6.4 8.1 5.27 39.73 FP-10 BD128 Systematic 6.3 9.7 18.67 39.73 FP-11 BD127 Systematic 9.7 9.7 OL2-2: Fixed Point Dimensions in FEET X Coord Y Coord Label Grid Type East North 39.25 16.11 FP-1 BA127 Systematic 9.7 16.1 83.21 16.11 FP-2 BA126 Systematic 20.9 16.1 127.17 16.11 FP-3 BA125 Systematic 32.0 16.1 171.12 16.11 FP-4 BA123 Systematic 10.4 16.1 17.27 54.18 FP-5 BB128 Systematic 20.6 21.4 61.23 54.18 FP-6 BB127 Systematic 31.7 21.4 105.19 54.18 FP-7 BB125 Systematic 10.1 21.4 39.25 92.25 FP-8 BC127 Systematic 9.7 26.6 83.21 92.25 FP-9 BC126 Systematic 20.9 26.6 17.27 130.32 FP-10 BD128 Systematic 20.6 31.9 61.23 130.32 FP-11 BD127 Systematic 31.7 31.9 North and East values are from each grid ID pin Xcoord and Ycoord are from the reference origin of the drawing -

the fence edge in BA128, 1 meter east of pin BA128 Attachment 6-4 E900-05-009

Site Report Site Summary Site Name: WL2JS e -

Planner(s): WJCooper5 Contaminant Summary NOTE: Surface soil DCGLw units are pCVg.

Building surface DCGLw units are dpn/100 cm2.

Screening Contaminant Type DCGLw Value Used? Area (mi) Area Factor Cs-137 Surface Soil 4.30 No 2.500 2.3 400 3 100 3.6 25 4.7 1 28.7 Att1c 0 s-,t 7-21

[ 9o0- os-O-00q COMPASS v1.0.0 21222005 Page 1

Surface Soil Survey Plan Survey Plan Summary Site: 0 L24UP -  %,e 2 /? §{

Planner(s): WJCooper Survey Unit Name: 0L2-1 Land outside Westinghouse area Comments:

Area (m2 ): 1,955 Classification: 1 Selected Test Sign Estimated Sigma (pCi/g): 0.24 DCGL (pCilg): 4.30 Sample Size (N): 11 LBGR (pCi/g): 3.58 Estimated Conc. (pCi/g): 0.3 Alpha: 0.050 Estimated Power 1 Beta: 0.100 EMC Sample Size (N): 11 Scanning Instrumentatii o)n: Nal Prospective Power Curve

~1

.I I I I 11 I 1 1 C

0.8

i I 1I I

- 0.7 t 0.6 P . A- =

• • r0.5 -I- - T I - 1-1

_ 0.4 C

= 03 . -1fi _ - I_ I 6 0.2 -CI. - -

- I E 0.1 0

0.0 05 1.0 1.5 2.0 2.5 3.0 3s 4.0 4.5 Soil Concentration pCiMg), including background

- Power - DCGL -- Estimated Power

- LEGR

• I-beta 4taorA~tehi 7 -Z r(00- 057-oo?

COMPASS v1.0.0 2/281200S Page I

Surface Soil Survey Plan Contaminant Summary 0 (L'2- l(zg 2/Ib/4 DCGLw Inferred Modified DCGLw Scan MDC Contaminant (pCIg) Contaminant Ratio (pCig) (pCtlg)

Cs-137 4.30 N/A N/A N/A 62 Survey Unit Estimate Reference Area Estimate (Mean Sigma) (Mean 1-Sigma)

Contaminant (pCig) (pCUg)

Cs-137 0.3

• 0.24 N/A Eq46- OX-ooq COMPASS v..02 5 212812005 Page 2

Site Report Site Summary Site Name: OL2-StZ - 2 Planner(s): WJCooper Contaminant Summary NOTE: Surface soil DCGLw units are pCVg.

Building surface DCGLw units are dpmnl DOcm2.

Screening Contaminant Type DCGLw Value Used? Area (ml) Area Factor Cs-137 Surface Soil 4.30 No 2.500 2.3 400 3 100 3.6 25 4.7 1 28.7

--tooLAr-( '2-if COMPASS v10.0 2122/005 Page I

Surface Soil Survey Plan ;

Survey Plan Summary Site: OL2-A Planner(s): WJCCooper Survey Unit Name: 0L2-2 Comments:

Area (m2): 1,711 Classification: I Selected Test: Sign Estimated Sigma (pCi/g): 0.65 DCGL (pCi/g): 4.30 Sample Size (N): 11 LBGR (pCilg): 2.35 Estimated Conc. (pCi/g): 0.7 Alpha: 0.050 Estimated Power. 1 Beta: 0.100 EMC Sample Size (N): 11 Scanning Instrumentation: Nal Prospective Power Curve

_ 1

09 I I  %

A

_ 0.8 7 I T

_ 0.7

-I-----I T1- -

P I T-I 1T C 0.6 0.5 I TA1[RII ll -

_ 0.4 i

- 0.3 I I I 1 T i 6.'02 I I I I i t 0.1 O

0.5 1.0 15 2.0 2.5 3.0 35 4.0 45 5.0 Soil Concentraton (pCiMg), inclung backgrounu

- Power - DCGL - - Estiated Power

- LBGR

• l-beta it r - 5 Fq 00- 0.'r-OL COMPASS v1.0.0 2128/2005 Page 1

Surface Soil Survey Plan Contaminant Summary 6t -? Z 2/g'J 4 DCGLw Inferred Modified DCGLw Scan MDC Contaminant (pCig) Contaminant Ratio (pCUg) (pC1g)

Cs-137 4.30 N/A N/A N/A 62 Survey Unit Estimate Reference Area Estimate (Mean +/- 1-Sigma) (Mean t 1-Sigma)

Contaminant (pC11g) (pCVg)

Cs-137 0.7+/- 0.65 Ni/A too-otthf ?-q f 9-o s-o-ooq 2128/2005 Page 2 COMPASS vl.0.O COMPASS vI.0.0 2/2812005 Page 2

OL2-1 OL2-2 Grid Csl137 Date Grid Cs137 Date BG131 0.18 9/16/2004 BE128 0.96 9/2/2004 BG131 0.58 9/16/2004 BE128 0.73 9/20/2004 BG130 0.73 9/15/2004 BE127 0.67 9/20/2004 BG130 0.36 9/15/2004 BE127 0.16 9/20/2004 BG130 0.08 12/14/2004 BC128 1.96 4/21/2003 BG129 0.26 9/15/2004 BC128 1.3 4/21/2003 BG129 0.15 9/15/2004 BC127 0.9 4/21/2003 BF128 0.15 9/20/2004 BC127 1 4/21/2003 BF128 0.24 10/4/2004 BB128 0.22 10/28/2004 BF127 0.23 9/20/2004 BB128 0.32 10/28/2004 BF127 0.2 9/20/2004 BB128 1.5 10/28/2004 BF127 0.08 12/14/2004 BB128 0.21 10/28/2004 BF126 0.42 9/13/2004 BB128 0.14 10/28/2004 BF126 0.5 9/13/2004 BB128 0.36 10/28/2004 BE126 0.28 9/13/2004 BB128 0.3 10/28/2004 BE126 0.54 9/13/2004 BB128 0.23 10/28/2004 BE125 0.32 9/13/2004 BB128 0.29 10/28/2004 BE125 0.1 9/13/2004 BB128 0.55 10/28/2004 BD125 0.67 9/13/2004 BB127 0.31 10/28/2004 BD125 0.18 9/13/2004 BB127 0.34 10/28/2004 BD124 0.2 9/13/2004 BB127 0.07 10/28/2004 BD124 0.6 9/13/2004 BB127 0.23 10/28/2004 BC124 1 8/31/2004 BA128 0.5 4/22/2003 BC124 0.9 8/31/2004 BA128 0.7 4/22/2003 BC123 0.18 8/31/2004 BA128 0.19 4/22/2003 BC123 0.41 8/31/2004 BA128 0.08 4/22/2003 BB123 0.5 8/31/2004 BA128 0.4 4/22/2003 BB123 0.12 8/31/2004 BA128 0.1 4/22/2003 BB122 0.06 1/3/2005 BA128 0.5 4/22/2003 BB122 0.2 1/3/2005 BA128 0.05 4/22/2003 BB122 0.12 113/2005 BA128 0.5 4/29/2003 BA122 0.2 8/31/2004 BA128 0.09 4/29/2003 BA122 0.13 8/31/2004 BA126 0.66 4/22/2003 0.33 average BA126 1.2 4/22/2003 0.24 std dev BA126 0.6 4/22/2003 BA126 0.7 4/22/2003 BA126 1.3 4/22/2003 BA126 3.3 4/24/2003 BA126 0.25 4/24/2003 BA126 0.5 4/24/2003 BA126 0.2 4/24/2003 BA126 0.2 4/30/2003 BA126 2.2 4/30/2003 BA126 0.4 4/30/2002 BA124 0.5 4/22/2003 BA124 1.6 4/22/2003 BA124 0.85 4/22/2003 BA124 1.7 4/22/2003 BA124 1.3 4/2212003 -1 BA124 1.3 4/22/2003 0.69 average Scloo-07-- ooq 0.65 std dev

-;'OSCL

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d*. rIOSCi:*. t gttodntrch -Z i'C oo or-oC?

OR IGIN'8AL Exhibit I Survey Unit InsDection Check Sheet Survey Unit 012-1 Survey Unit Location' Westinghouse Yard- Outside Fence Perimeter Ii I Strip Date 3/15/05 Time 1210 Inspection Team Members D. Sarge

~4>~' SETIO 2-SUR~Y ~mISPETIN SOE`"

Inspection Requirements (Check the appropriate Yes/No answer.) Yes No N/A

1. Have sufficient surveys (i.e., post remediation, characterization, etc.) been obtained for the survey unit? X --

2. Do the surveys (from Question 1) demonstrate that the survey unit will most likely pass the FSS? X

3. Is the physical work (i.e., remediation & housekeeping) in or around the survey unit complete? X

4. Have an tools, non-permanent equipment, and material not needed to perform the FSS been removed? X

5. Are the survey surfaces relatively free of loose debris (i.e., dirt, concrete dust, metal filings, etc.)? X

6. Are the survey surfaces relatively free of liquids (i.e., water, moisture, oil, etc.)? X

7. Are the survey surfaces free of all paint, which has the potential to shield radiation? X

8. Have the Surface Measurement Test Areas (SMTA) been established? (Refer to Exhibit 2 for Instructions.) X

9. Have the Surface Measurement Test Areas (SMTA) data been collected? (Refer to Exhibit 2 for Instructions.) X

10. Are the survey surfaces easily accessible? (No scaffolding, high reach, etc. is needed to perform the FSS) X

11. Is fighting adequate to perform the FSS? X

12. Is the area Industrially safe to perform the FSS? (Evaluate potential fall & trip hazards, confined spaces, etc.) X

13. Have photographs been taken showing the overall condition of the area? X

14. Have all unsatisfactory conditions been resolved? X NOTE: If a 'No' answer is obtained above, the Inspector should immediately correct the problem or Initiate corrective actions through the responsible site department, as applicable. Document actions taken and/or justifications in the 'Comments section below. Attach additional sheets as necessary.

Comments:

Survey Unit Inspector (print/sign) David Sarge / Date j3115/05 Survey Designer (print/sign) I - Date6/

4a-tet CA J- ChI& ? -1 if900 -OF--6Of'

0', I6.. Exhibit I Survey Unit Inspection Check Sheet

~~'SCIN-SEURVNEY,.U~SILFlNSEYCTI0 D CRI PTQ $4 Survey Unit # 012-2 Survey Unit Location Westinghouse Yard Date 3/15105 Time 1205 Inspection Team Members D. Sarge SEEC ION 1SURVEYbN-NSPECI SCOPE, Inspection Requirements (Check the appropriate Yes/No answer.) Yes No N/A

1. Have sufficient surveys (i.e., post remediation, characterization, etc.) been obtained for the survey unit? X

2. Do the surveys (from Question 1) demonstrate that the survey unit will most likely pass the FSS? X

3. Is the physical work (i.e., remediation & housekeeping) In or around the survey unit complete? X

4. Have all tools, non-permanent equipment, and material not needed to perform the FSS been removed? X

5. Are the survey surfaces relatively free of loose debris (i.e.. dirt, concrete dust, metal filings, etc.)? X

6. Are the survey surfaces relatively free of liquids (i.e., water, moisture, oil. etc.)? X

7. Are the survey surfaces free of aln paint, which has the potential to shield radiation? X

8. Have the Surface Measurement Test Areas (SMTA) been established? (Refer to Exhibit 2 for Instructions.) I X

9. Have the Surface Measurement Test Areas (SMTA) data been collected? (Refer to Exhibit 2 for Instructions.) X

10. Are the survey surfaces easily accessible? (No scaffolding, high reach, etc. is needed to perform the FSS) X

11. Is lighting adequate to perform the FSS? X

12. Is the area Industrially safe to perform the FSS? (Evaluate potential fall & trip hazards, confined spaces, etc.) X

13. Have photographs been taken showing the overall condition of the area? X

14. Have all unsatisfactory conditions been resolved? X NOTE: If a 'No answer Is obtained above, the inspector should Immediately correct the problem or Initiate corrective actions through the responsible site department, as applicable. Document actions taken and/or Justifications In the Comments section below. Attach additional sheets as necessary.

Comments:

Response to Question 3:

A PRI Soil pile is deposited within the boundaries of this survey unit. The area below this pile will have to have FSS performed prior to site release and the outline out the pile will need to be marked to provide evidence of this area requiring FSS at a later time. Notified L Shamenek.

Response to Question 4:

Gradall lifting equipment is currently within the survey unit. Notified L. Shamenek.

Survey Unit Inspector (print/sign) David Sarge 1 Dafe 3/15/05 Survey Designer (print/sign) > Date I

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