E910-05-018, Calculation E900-05-020, Rev 0, OL9 Open Land Area - Survey Design, Appendix a to Final Status Survey Report for Saxton Nuclear Experimental Corporation Open Land Area OL9

Calculation E900-05-020, Rev 0, OL9 Open Land Area - Survey Design, Appendix a to Final Status Survey Report for Saxton Nuclear Experimental Corporation Open Land Area OL9

ML051950548
Person / Time
Site:	Saxton File:GPU Nuclear icon.png
Issue date:	06/07/2005
From:	Brosey B FirstEnergy Corp
To:	Office of Nuclear Reactor Regulation
References
E910-05-018 E900-05-020, Rev 0
Download: ML051950548 (42)

Text

Appendix A SNEC CALCULATION COVERMSHEET CALCULATION DESCRIPTION Calculation Num r Revision Number Effective Date Page Number E900-0:020\ 0 I of 9 Subject OL9 Open Land Area\Survey Design Question 1 - Is this calculation de ned as 'in QA Scope'? Refer to definition 3.5. Yes 0 No El Question 2 - Is this calculation delin as a Design Calculation-? Refer to definitions 3.2 and 3.3. Yes 0 No J NOTES: If a 'Yes' answer is obtained for Q tion 1,the calculation must meet the requirements of the SNEC Facility Decommissioning Quality Assurance Plan. If a 'Yes answer Is obted for Question 2, the Calculation Originator's immediate supervisor should not review the calculation as the Technical Reviewer .

DE),CRIPTION OF REVISION.

addiation Oriewnao A. Pa eyte . Date Technical Reviewer W. COOpe Date Additional Review A. Paynterl Dateus nh>2 Additional Review .. Date

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I Subject OL9 Open Land Area -Survey Design Question I - Is this calculation defined as In QA Scope'? Refer to definition 3.5. Yes 0 No 0 Question 2-Is this calculation defined as a Design Calculation'? Refer to definitions 3.2 and 3.3. Yes 0 No l 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 Originatoe's immediate supervisor should not review the calculation as the Technical Reviewer.

DESCRIPTION OF REVISION Minor revision of Attachments 5-1, 7-1 & 7-2. The "North" indicator was added to the diagrams and the grid outlines were included. In addition, grid markers were added to Attachment 7-1 and 7-2. The originals have been left in place IAW the SNEC Facility Calculations procedure, and the new sheets have an "A"included with the Attachment number (example = 5-1A). No other changes have been included and there is no change to the calculations presented herein.

BHB

.. APPROVALSIGNATURES 'I":;;

Calculation Originator Technical Reviewer I Additional Review Additional Review

, nelpr ;t A a, I

- SNEC CALCULATION SHEET-Calculation Number Revislon Number Page Number E900-05-020 0 Page 2 of 9 Subject OL9 Open Land Area - Survey Design 1.0 PURPOSE 1.1 The purpose of this calculation is to develop a survey design for the SNEC site open land area designated 'OL9m, which is located in the south west sector of the site. The 0L9 area is -13.300 square meters, and is a Class 2 survey area. OL9 is shown on Attachment 1-1.

This design applies only to open land areas within the OL9 site location.

1.2 OL9 is sub-divided into two (2)survey units with the following approximate surface areas:

• OL9-1, -5,800 square meters, and

• OL9-2, -7,500 square meters 2.0

SUMMARY

OF RESULTS The following information should be used to develop a survey request for these survey units.

The effective DCGLw value is listed below for each survey unit. The US NRC has reviewed and concurred with the methodology used to derive these values. See Attachment 2-1 to 2-6 (019-1) and 2-7 to 2-10 (from OL1IOL2 - used for OL9-2).

Table 1, DCGLw Values Survey Unit Volumetric DCGLw (pC[/g - Cs-137)

OL9-1 3.76 (2.82 A.L.)

OL9-2 5.73 (4.3 A.L)

NOTE: A.L Is the site Administrative Limit (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" L Nal detector with a Cs-1 37 window setting (Reference 3.1). The window shall straddle the Cs-137 662 keV peak width (see typical calibration information on Attachment 3-1).

2.1.2 The instrument conversion factor/efficiency shall not be less than 206 cpm/uRlh -

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.

Table 2, Soil Scanning Parameters MDCscan (pCi/g) - Cs-137 Scan Speed (cmlsec) Maximum Distance from Surface Action Level  % Coverage 5.97 4' (gap between detector face & soi surface)

See Attachment 4-1 through 4-4 for actual calculfao 2.1.4 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 and/or other appropriate marking methods. To complete.the investigation, sample elevated

SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-020 0 Page 3 of 9 Subject OL9 Open Land Area - Survey Design areas(s) IAW SNEC procedure E900-IMP-4520.04 (Reference 3.2), and Section 2.2 of this calculation.

2.1.4.1 Class 2 soil should be scanned using a serpentine pattern that is -0.5 meters wide.

2.1.4.2 Scanning locations are randomly chosen on a per grid basis. Grids that can not be accessed should be clearly noted along with the reason for not completing the scan in that area. Scanning of partial grid areas is permitted with proper documentation.

2.1.4.3 The minimum number of scan locations (-50% of each survey unit) are identified by the VSP computer program. (Reference 3.3), and are listed in Table 3 (see Attachment 5-1 and 5-2). Additional randomly chosen grids are provided so that a 50% scanning goat can be reached if some grids are deemed inaccessible. There is no need to scan these extra grid areas if the minimum scanning goal is attained in each survey unit.

Table 3, Randomly Located Grids for Scanning Survey Unit Number of Grids OL9-1 29 min. (32 provided)

OL9-2 38 min. (39 provided)

See Attachment 5-1 and 5-2 2.1.5 The minimum number of randomly located sample Doints required for these survey units are listed in the following Table (see Compass output on Attachment 6-1 through 6-8). The surveyor should attempt to collect all samples listed below, but must collect the minimum values listed for each survey unit.

Table 4, Randomly Located Sample Points Survey Unit NumberofSamples L091 15 min. (18 provided) 019-2 18 min. (21 provided)

See Attachment 7-1 to 7-2.

2.1.6 Sampling depth should be IAW Section 2.2.

2.1.7 Because the MDCscan (soil) is above the DCGLwcs,37, these survey units are Class 2 areas but are assumed to be Class 1 areas for purposes of data entry into the Compass computer program, forcing Compass to evaluate the number of samples based on the 'Hot Spot' design criteria (see Attachment 6-4 and 6-8).

2.1.8 VSP (Reference 3.3) is used to plot all scan and sample point locations in the included diagrams. The actual number of random start systematically spaced

SNEC CALCULATION SHEET- -

Calculation Number Revision Number Page Number E900-05-020 0 Page 4 of 9 Subject OL9 Open Land Area - Survey Design measurement points may 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 concems/Hot Spot design requirements 2.1.11 The starting points for physically locating sample sites in the survey unit are based on measurements from selected site grid pins (see diagrams on Attachment 7-1 and 7-2). Remaining soil sampling . points are positioned using coordinates/measurements developed from these markers and the current site grid map.

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

2.1.13 When an obstruction is encountered that will not allow collection of a sample, contact the cognizant SR coordinator for permission 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.

NOTE Since the site surface dose model is 1 meter in depth, 1 meter deep samples must be collected to satisfy the initial sampling requirements of Section 2.1.5 (of this calculation).

Sections 4.2.3, 4.2.6 or 4.2.7 of site procedure E900-IMP-4520.04 are applicable when satisfying sampling requirements of this document.

2.2.1 Subsurface sampling in the western portion of 019-1 where building debris may be encountered, should penetrate the building rubble depth and access the base soil below the rubble bed. Collect a sample for each meter of depth to the subsurface base depth. The base soil sample depth should be enough to collect at least one sample (-6 inches in depth) plus any QC required sample.

2.2.2 Clearly mark, identify and document all sample locations.

2.3.1 As a part of the investigation process, sample any location that is above the action level cited is Table 2.

I  ?-_SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-020 0 Page 5 of 9 Subject OL9 Open Land Area - Survey Design

3.0 REFERENCES

3.1 SNEC Calculation No. E900-03-018, 'Optimize Window and Threshold Settings for the Detection of Cs-137 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 Visual Sample Plan, Version 2.0 (or greater), Copyright 2002, Battelle Memorial Institute.

3.4 Compass Computer Program, Version 1.0.0, Oak Ridge Institute for Science and Education.

3.5 Plan SNEC Facility License Termination Plan.

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

3.7 SNEC Facility Survey Request No.'s SR-1 33 & SR-1 34, 'Spray Pond".

3.8 GPU Nuclear, SNEC Facility, "Site Area Grid Map', SNECRM-020, Sheet 1, Rev 2, 1/29/03.

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

3.10 SNEC Procedure E900-IMP-4520.06, "Survey Unit Inspection in Support of FSS Design".

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

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

4.0 ASSUMPTIONS AND BASIC DATA 4.1 The Compass computer program is used to calculate the required number of random start systematic samples to be taken in the'survey unit (Reference 3.4).

4.2 Characterization soil samples from this area 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 8-2 along with the applicable SR number.

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

4.4 The number of points chosen by Compass are located on the survey map for the survey unit by the Visual Sample Plan (VSP) computer code' (Reference 3.3).

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

4.6 Background in the OL9 area is assumed to be similar to background in the SP1 area.

Background has been measured in the SPI area, and ranges from -100 cpm to -300 cpm (Reference 3.7). The dominant area background is about 200 cpm. Therefor, the MDCscan value is calculated using this value.

4.7 The site area drawing used to determine the physical extent of this area is listed as Reference 3.8.

SNEC CA'.CUlATION'SHEET.'

Calculation Number Revision Number Page Number E900-05-020 0 Page 6 of 9 Subjed OL9 Open Land Area - Survey Design 4.8 Remediation History No significant remediation has occurred in the OL9 area regarding the open land area itself.

Removal of a small garage facility in the OL9-2 area left only a small concrete slab which was surveyed by SRA. The rake and screen areas were opened as a result of efforts to provide access to the Intake Tunnel area. Miscella'neous concrete structures in the OL9 area will be addressed in a separate survey design as deemed appropriate by SNEC management.

4.9 This survey design uses Cs-137 as a surrogate to bound the average concentration for all SNEC facility related radionuclides in the survey unit. The effective DCGLw is just the permitted Cs-137 concentration (6.6 pCVg) 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-1 37 concentration to an effective DCGLw for this radionuclide.

4.10 The sample database used to determine the effective radionuclide mix for the OL9 area has been drawn from samples that were assayed at off-site laboratories. This list is shown on Attachment 2-1 through 2-10, and includes Spray Pond samples for OL9-1. OL9-2 is assumed to contain the same radionuclide mix as the OL10L2 areas. The data shows Cs-137 to be the predominant radioactive contaminant found in both survey units.

The decayed set of sample results were input to the spreadsheet titled *Effective DCGL Calculator for Cs-137' (Reference 3.9) to determine the effective volumetric DCGLw values. The output of this spreadsheet is shown on Attachment 2-6 (0L9-1) and 2-10 (OL9-2).

4.11 The Nal scan MDC calculation is determined based on a 25 cmlsec scan rate, a 1.38 index of sensitivity (95% correct detection probability'and'60% false positive) and a detector sensitivity of 206 cpmluRlh for Cs-137. Additionally, the detection system incorporates a Cs-137 window that lowers sensitivity to background in the survey unit. For purposes of calculating the MDCscan value used for planning purposes, background is assumed to be

-200 cpm.

4.12 The survey unit described in this survey design was inspected by site personnel. A copy of portions of the SNEC facility post-remediation inspection report (Reference 3.10), is included as Attachment 9-1.

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

4.14 The decision error for this survey design is 0.05 for the a value and 0.1 for the 1 value.

4.15 'Special measurements' (as described in the SNEC LTP) are not included in this survey design.

4.16 No additional sampling will be performed IAW this survey design beyond that described herein.

4.17 SNEC site radionuclides and their individual DCGLw values are listed on Exhibit I of this calculation.

4.18 The survey design checklist is listed in Exhibit 2.

4.19 Area factors are shown as part of Compass output (see Attachment 6-1 and 6-5).

r CalulaCo N SNEC CALCULATION'SHEET:-

Calculation Number Revision Number Page Number E900-05-020 0 Page 7 of 9 Subjec OL9 Open Land Area - Survey Design 5.0 CALCULATIONS 5.1 All calculations are performed internal to applicable computer codes or within an Excel spreadsheet.

6.0 APPENDICES 6.1 Attachment 1-1, is a diagram of survey area OL9 (in southwest quadrant of SNEC site).

6.2 Attachment 2-1 to 2-10 is the sample results from:the south west site area including the Spray Pond. In addition, the DCGL calculation sheets have been included.

6.3 Attachment 3-1, is a copy of calibration data from typical Nal radiation detection instrumentation that may be used in this survey area (IAW Section 2.1.2).

6.4 Attachment 4-1 and 4-4, is the MDCscan calculation and supporting MicroShield output for volumetric materials.

6.5 Attachment 5-1 and 5-2, are the scan locations for the 0L9 survey units.

6.6 Attachment 6-1 through 6-8, are Compass output for the 0L9 areas showing the number of required sampling points for these survey units.

6.7 Attachment 7-1 to 7-2, is the sample point locations with dimensions for each survey unit.

6.8 Attachment 8-1 to 8-2, is the soil variability results for'selected soil samples from the 0L9 area.

6.9 Attachment 9-1, is a copy of part of the inspection report for the 0L9 area.

?< SNEC CALCULATION'SHEET-1.

Calculation Number Revision Number Page Number E900-05-020 . 0 Page 8 of 9 Subject 0L9 Open Land Area - Survey Design 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)

(dpm/l1Ocm2 ) (Surface & Subsurface) (Surface & Subsurface)

(pCIlg) (pC-ig)

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-1 37 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 mrem/y goal, only the DCGL values that constitute the 25 mrem/y regulatory lkit,will be controlled under this LTP and the NRC's approving Lcense 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 E900-05-020 0 Page 9 of 9 Subject OL9 Open Land Area - Survey Design Exhibit 2 Survev Desiqn Checklist Calculation No. l Location Codes E900-0S-020 01-9 (South West Quadrant) _____

Status Reviewer ITEM REViEW FOCUS (Circle One) Initials & Date I Has a survey design calculation number been assigned and Is a survey design summary N/A description provided? . 3 ,N/A 2 Are drawings/diagrams adequate for the subject area (drawings should have compass e NA

______headings)?

3 Are boundaries property identified and is the survey area classification clearly Indicated? ,'Yes, N/A 4 Has the survey area(s) been property divided Into survey units LAW EXHIBIT 10 IC N/A -

5 Are physical characteristics of the areallocation or system documented? s N/IA 6 Is a remediation effectiveness discussion included? N/A 7 Have characterization survey and/or sampling results been converted to units that are reA N/A comparable to applicable DCGL values?

8 Is survey and/or sampling data that was used for determining survey unit variance included? (Ies,/A >'.

9 Is a description of the background reference areas (or materials) and their survey and/or Yes, ,/

sampling results Included along with a justification for their selection? '"' ,

10 Are applicable survey and/or sampling data that was used to determine variability Included? e ,N/A Will the condition of the survey area have an impact on the survey design. and has the N/A probable impact been considered in the design?

Has any special area characteristic including any additional residual radioactivity (not 12 previously noted during characterization) been identified along with its impact on survey Yes,

_ _ _ _ _ _ ~~~~~de sig n? _ _ _ _ _ _ _ _ _ _ _ _

13 Are all necessary supporting calculations and/or site procedures referenced or included? ( N/A c 14 Has an effective DCGLw been Identified for the survey unit(s)?. N/A, 15 Was the appropriate DCGLoc induded in the survey design calculation? tlQ-16 Has the statistical tests that will be used to evaluate the data been identified?Ygy N/A 17 Has an elevated measurement comparison been performed (Class I Area)? Yes, g  ! a 18 Has the decision error levels been identified and are the necessary justifications provided? Kejj N/A -

19 Has scan instrumentation been Identified along with the assigned scanning methodology? N/A .M 20 Has the scan rate been identified, and Is the MDCscan adequate for the survey design? N/A 21 Are special measurements e.g., In-situ gamma-ray spectroscopy eqired under this design, )

and is the survey methodology, and evaluation methods described? ___

22 Is survey instrumentation calibration data included and are detection sensivities adequate? fe N/A ,'-

.23 Have the assigned sample and/or measurement locations been clearly identified on a diagram ' N/A or CAD drawing of the survey area(s) along with their coordinates? N 24 Are Investigation levels and administrative limits adequate, and are any associated actions s WA 24 e InAestgati n l vels andclearly Indicated?

25 For sample analysis, have the required MDA values been determined.? Yes, 6 Ž0-26 Has any special sampling methodology been identified other than provided in Reference 6.3? e, NIA NOTE: a copy of this completed form or equivalent, shall be Included within the survey design calculation.

SNEC Site open Land Area'- South Wes't Quadrant o0 o 0 0O0-0 0 *0 0 00 0 0 OLB00 I a 0L a -0 0 O-0 0 0 0 a -o L 0 V' 00 poa0

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A E0 O. 0- 00 -0 00 0 0 0 0 0 0 0 UNEGRUD TUCUE

DCGL Calculation Logic - SNEC Facility South West Quadrant Survey Units: SNEC Site survey unit named OL9-1 II,

Description:

The purpose of this calculation is to determine a representative isotopic mix from available sample analyses for the OL9-1 survey unit of the SNEC site. 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 five (5) tables. These tables were developed using Microsoft Excel. Table explanation is as follows.

Table 1: Raw Data Listing - This table provides a list of twenty seven (27) representative sample analysis results. Results are from scoping, and characterization survey activities of the OL9-1. and near OL9-1 site areas such as the SP-1 area (Spray Pond). The samples consist of soil and sediment samples that were taken in support of the aforementioned activities. As applicable, a sample number, sample locationldescription, radionuclide concentration, and 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: Reduced Listing, Less Than Values Removed - This table provides the best overall representation of the raw data from table 1. Non-positive nuclide columns have been removed as well as all the MDA values leaving nineteen (19) sample'results. Thus, eleven (11) nuclides have been reduced to four (4) in this table.

Table 3: Decayed Sample Listing - This table decays the data from Table 2. Halflife values (in days) are listed above each respective nuclide column. Samples are decayed from their respective analysis date to March 15, 2005. Only positive results were decayed.

Table 4: Decayed Values - Ratio to Cs-1 37 - This table provides the calculation methodology for determining the surrogate ratio to Cs-137 for each radionuclide. From this information the mean, sigma, and mean % of total are calculated. The mean % of total values (normalized to 100%) are then used to calculate the effective 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. Amn-241) had a positive result This value is listed as the mean value in the tabulation. Therefore, this treatment results in higher mean percent of total values in the mix, which is considered a conservative approach.

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

IV. Summary - Since the South West Quadrant of the site is largely soils and or rock material, the release limit is based on a volumetric DCGLW. Using the above data selection logic tables the calculated Cs-137 surrogate volumetric DCGLW is 3.76 pCilg. This value is reduced by 25% as part of SNEC's commitment to apply an administrative limit as discussed in the License Termination Plan (LTP). Since positive sample result concentrations for Cs-1 37 are low in these areas, any ratios developed are influenced by background levels of other radionuclides such as C-14. Thus this methodology is considered a conservative approach.

1 ATTACMENE -

TABLE 1 -RAW DATA LISTING SlECSamnple II. LAS tilo Locatlon.ewslptlon H-3 St." Co.40 Cs.17 Am.241 Pt.238 Pu-2?3 Pu-241 C.14 Ill-El Eu-152 Anah§lyOt*

I SX1 SDM9223 111078 S ei Oar t4 FMm DrehainMmOL9 < 0.3 6.4 July 22 1999 2 SX11SD090135 110680 SW W SW - Of>Farce.12Lbe,0,9 < 0.05 0.072 September 2,1999 3 SX11S1990085 T6*dedyn .L20274-2 Sd,Or'dAPX144, RMFAi, OLS < 1.76 < 0.0493 < 0.0268 1.3 < 0 0797 < 0 0966 <00966 < 5.84 < 0.497 < 3.03 < 0.0582 October6, 1999 4 SXSD3240 Tekldyne UL2f44-3 SSOS DrahFk. OL9 c 0.03 0.4 < 0.175 October 22, 2002 S SXSD3242 TteldynenL2O44*-0 SSOSOranFI, 0L.9 e 0.03 0.6 <0.218 October 22,20[2 4 SXSD3243 Tel.odynrL2f4U-10 SSOS Drah FbId, 019 c 0.06 0.6 < 0.246 October22, 2002 7 SXSL5717 Telen*, L2U070-1.2 SW.SR-132,AL-143, 0L9 < 0.772 < 0.0419 < 0.0378 1.04 c0.0894 <0.0186 <0.0228 <3.27 0.28 < 2.59 < 0.114 June 16, 2004 4 SX11SL99230 111082 Sustftface Sa t 54(0-4l AM153, SPI < 0.3

• 0.21. _ November 18, 1999 2 SX11SLS90128 110653 SprayP d.sawleJS,Sr'¶ < 0.02 0.29 . October 14, 1999 14 SX11SL99233 111084 S&bslweee Swe 2 (0-T)A 58, SP1 < 0.12 0.33 . - - - . November 18, 1999 11 SX9SL9920B 111068 SbstlaeeaSwe t1 (4-') AO1 5S, SP1 - < 0.14 0.45 - November 18, 1999 12 Sf11 gSL99229 1110oe Su efae SE" t1 (03T) A1 58, SPi < 0.12 0.47 _ November 18, 1999 13 SX11SU390124 110649 SprayPd. Sw* t1, SPI < 0.02 0.62 October28, 1999 14 SX11StI90125 110S50 SprayPord1 Swrpbh, SPt < 005 0.72 _ _ October28, 1999 16 SX11SL990126 110651 SrYPord .Sample #3,SP- <0.06 1.8 October28, 1999 1s SX1ISL990127 110652 Sprey Pond-SaSnple u4, SPI < 0.05 2.2 October 28, 1999 17 SX11s.990120 110645 SyPra d.Samffei1O0, SPI < 0.019 < 0.02 October 28 1999 is SXIISLs9O119 110844 SraY Pond . Samme ts, SP1 < 0.03 c 0.03 October28. 1999 It SXII sSs99122 110847 Spray Pornd SampSts, SPI < 0.03 < 0.03 - October28. 1999 20 SXII SL90 123 1164s8 Spray Pord. Swple 18tSPI < 0.03 < 0.03 - - - - October 28, 1999 21 SX11SL99121 110648 SprayPord.S nams7, -. - < 0.05 < 005 _- - October28, 1999 22 SXsSLs9204 111064 SdStrtace S4Amt2(4-6) AK1 58sp1 -P- <0.17 < 0.06 - - November18, 1999 23 SX9SL99205 111065 Sub'ace Saroe n3 (4-6) AX1 58, SPI - <0. 3 - - - November 18, 1999 24 SXII1S1992 111137 Subs~uace Samrle 3(0.31 AJ$I58, SPi - <. <0. - Nvmber 18, 1999 25 SXS1252 111151 Comooste of Sprav Powd Sol 125.1 28 I 127. SPI 0. 0 :163 1 7 0°03 1<0.0001 .0043 .Oclober28; 1999 24 SXI15199028 1 etedlei WM 1 'SpryPorl.Sade 3, SPI-Sp-a - < 2.08 <0.0111 1.56 1<0.0102 <0.0402 0.0)89. c2.381 0.225 1< 1.191 <0.025 1 October28, 1999

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Shaded Background Positive

- Result i

-t f: IGray Shaded Backgrotnd = MDA ATTACHMENT 2 - 2 2

TABLE 2 - REDUCED LISTING, LESS THAN VALUES REMOVED SllEC Sample lo I LAB lo. LocationhDescilptlon Cs-137 Arn-241 Pu-239 C-14 Analysis Date I SXI0SD99223 111076 Southwest Garage #4Floor Drain Rim - 0L9 6.4 l July 22,1999 2 SXI1 SD9901 35 110660 SW Garage - South of Fence - 1 2' Line, 0L9 0.072 September 2, 1999 3 SX 1SL990085 Teledyne; L20270-2 Sol, Grid AP-144, SURFA01, 0L8 1.3 October 6, 1999 4 SX11 SL990128 110653 Spray Pond - Sample #5, SPI 0.29 October 14,1999 5 SX1 I SL9901 24 110649 Spray Pond - Sample' #1, SP1 0.62 October 28, 1999 6 SXI ISL9901 25 110650 Spray Pond - Sample #2, SP1 0.72 October 28, 1999 7 SXI I SL9901 26 110651 Spray Pond - Sample #3, SPI 1.8 October 28, 1999 8 SXI I SL990127 110652 Spray Pond - Sample #4, SPI 2.2 October 28, 1999 9 SXSL25262. 111151 Composite ot Spray Pond Sol 125,126 & 127, SP1 1.57 0.0035 0.0043 October 28,1999 10 SX11 SL990126 Teledyne; L21441-1. Spray Pond - Sample #3, SPI (Spray0l) 1.56 0.225 October 28, 1999 11 SX11SL990127. Teledyne; L21441-2 Spray Pond - Sample #4,SPI (SprayOl) 2.8 0.591 October 28, 1999 12 SXI 1SL99230 111082 Subsurface Sample #4 (0-4') Al- 53, SPI 0.21 November 18,1999 13 SXI I SL99233 .111084 Subsurface Sample #2 (0-3) AH-1 56, SPI 0.33 _ _ November 18, 1999

14 SX9SL99208 111068 Subsurface Sample #1 (4.6') AG-1 56, SPI 0.45 November 18, 1999 15 SX11SL99229 '111080. Subsurface Sample #1'(0.31 AG-156, SPI 0.47 November 18, 1999 16 SXSD3240'. Teledyine; L20648-8 SSGS Drain Field. 0L9 0.4 October 22, 2002 17 SXSD3242 TeletNte; L20648-9 SSGS Drain Field, 0L9 0.6 October 22, 2002

'i8 SXSD3243. Teledyne; L20648-10' ... SSGS Drain Field, OL9 .. 0.6 .- October 22, 2002 19 SXSL5717 TeleWSme, L25070-1-2 Sol, SR-132, AL- 43,,0L9 1.04 0.28 June 16, 2004 3

ATTACHMENT 2 - 3

TABLE 3 - DECAYED SAMPLE LISTING T12 (d)T112(d) T1/2(d) T1/2(d) Decay Date l 11020 1 157861 1881384B 2092883 l 3(y1D2005 SIIEC Samnle lo LAB llo. LocatlonyDesiintion Cs-1137 Ani-241 Puti-239 C-14 Elamsed W1I Analysis Date I SX1 OSD99223 111076 Southwest Garage 14 Floor Drain Rim - OL9 5.6213 2063 July 22, 1999 2 SX1I SD990135 110660 SW Garage - South of Fence - 12 LUne, OL9 0.0634 2021 September 2, 1999 3 SX1 I S1L990085 Teledyne; L20270-2 Sol, Grid AP-1 44, SURFA01, OL8 1.1473 _ 1987 October 6, 1999 SX11 SL990128 110653 Spray Pond - Sample #5,SP1 0.2561 1979 October 14, 1999 SX1 I SL9901 24 110649 Spray Pond - Sample #11, SPi 0.5479 1965 October 28, 1999 6 SXtI SL990125 110650 Spray Pond - Sample #2, SPI 0.6363 1965 October 28, 1999

.T SX1 I SL9901 26 110651 Spray Pond - Sample #3, SP1 1.5908 1965 October 28, 1999 8 SX I SL990127 110652 Spray Pond - Sample #4, SPI 1.9443 1965 October 28, 1999 9 SXSL25262 111151 Composfe ofSpray Pond Sol 125,126 &127 SP1 1.3904 0.0035 0.0043 1965 October 28, 1999 10 SX115SL990126 Teledyne; L21441-1 Spray Pond - Sample #3, SPI (SprayOl) 1.3787 0.2249 1965 October 28, 1999 11 SX1I SL990127 Teledyne; L21441.2 Spray Pond - Sample #4, SPI (SprayOl) 2.4745 0.5906 1965 October 28, 1999 12 SX1 1SL99230 .111082 Subsurface Sample #4 (0-4) Al- 53, SP1 0.1858 1944 November 18,1999 13 SXI1 SL99233 111084 Subsurface Sample #2 (0-3) AH-1 56, SPI 0.2920 1944 November 18, 1999

.14 SX9SL99208 111068 Subsurface Sample #1(4-6) AG-1 56, SPI 0.3982 1944 November 18, 1999 15

.Is SX1 1 SL99229 111080 Subsurface Sample #1 (0-3) AG-1 56, SPI 0.4159_ 1944 November 18, 1999 i 16 SXSD3240 Teledyne: L20648-8 - SSGS Drain Field. OL9 0.3786 _ 875 October 22, 2002 I i

.1 SXSD3242 Teledyne; L20648.9 SSGS Drain Field, 019 0.5679 875 October 22,2002

,1 SXSD3243 Teledyne; L20648-10 SSGS Drain Field, OL9 0.5679 875 October 22,2002 I I

I .. -

.19 SXSL571 7 Teledyne, L25070-1-2 Sol, SR-1 32, AL-1 43, OL9 1.0224 I I 0.2800 272 I June 16. 2004 4

ATTACHMENTH *EN

i TABLE 4 - DECAYED VALUES - RATIO TO Cs-137 Decay Date i 3/15/2005 i S11EC Samifle llo LAB lo. Locatlonllescriptlon Cs-137 Am-241 Pui-239 C-14 Total Analysis Date I SXI OSD99223 111076 Southwest Garage #4Floor Drain Rim - 0L9 1.0 l 1.000 July 22, 1999 i

2 SX11SD990135 110660 SWOarage- South of Fence -12"Line, 0L9 1.0 _ 1.000 September 2, 1999 3 SXI I SL990085 Teledyle; L20210-2 Soil, Grid AP-1 44, SURFA01, 0L8 1.0 - 1.000 October 6, 1999 I 4 SX11 SL990128 110653 Spray Pond - Sample #5, SPI 1.0 1.000 October 14,1999 11 5 SXII SL9901 24 110649 Spray Pond - Sample #1,SPI 1.0 1.000 October 28, 1999 6 SX11SL990125 110650 SprayPond-Sample #2,SP1 1.0 1.000 October 28, 1999 i

7 SXI I SL990126 110651 Spray Pond - Sample #3,SP1 1.0 1.000 October 28, 1995 i

8 SX11SL990127 110652 Spray Pond - Sample #4,SP1 1.0 1.000 October 28, 1999 i 9 SXSL25262 111151 Composteof Spray PondSoil 125,126 8127,SP1 1.0 0.0025 0.0031 1.006 October 28, 1999 I I0 SX11 SL990126 Teledyne; L21441.1 Spray Pond - Sample #3,SPI (Sprayal) 1.0 0.1631 1.163 October 28, 1999 I

I 11 SXII SL990127 Teledyne; L21441-2 Spray Pond - Sample #4,SP1 (Spray0l) 1.0 _ 0.2387 1.239 October 28, 1999 I I2 SX11SL99230 111082 Subsurface Sample #4(0-4') A-I 53, SPI 1.0 1.000 November 18,1999 I3 SXI 1SL99233 111084 Subsurface Sample #2(0-3) AH-1 56, SPI 1.0 1.000 November-18, 1999 I4 SX9SL99208 111068 Subsurface Sample #1(4-6' AG-I 56, SPI 1.0 1.000 November-18, 1999 I5 SX1 1S99229 111080 Subsurface Sample #1(03') AG- 56, SPI 1.0 1.000 November 18, 1999 6 SXSD3240 Teledyne; L20648-8 SSGS Drain Field. 0L9 1.0 . 1.000 October 22, 2002 7 SXSD3242 Teledyne: L20648-9 SSOS Drain Field, 0L9. 1.0 _ 1.000 October22,2002 I8 SXSD3243 Teledyne; L206484 0 SSOS Drain Field, 0L9 1.0. ._. 1.000 October 22, 2002 I_9. SXSL571 7 Teiedyne, L250O-O1-2 _

Sol, SR-1 32,. AL-143,. OL-9 1.0 - I .. _ 0.2739

_ 1,274

_ June

. 16,2004

._I j . Pbir Ratio to Ce-13=> 1.000- 0.002 0.003 0.225 1.231

'.or.a.aJid-> 81.25% 0.20% 0.25% 18.30° Sigman> 0 N/A N/A 0.057 >___-_:__:_-

ATTACHMENT 2 5 .5

Table 5

$I¢SN SHEC-AL;X1I 75% lT `rcr, LkDCCEWI ;Adai{-iv~l4 Fdi I

!Effective DCGL Calculator for Cs-137 (In pCIIg) I 4.62 IpClJq I 3.47 IpCig I SAMPLE IlUMBER(se) lOLS.1 - Open Land A eJ I-<;Tcit :firEif~i!Rztl c*-13 'Atdmlfi~I~ii 26.61% 25.0 mremry TEDE Limit 3.76 I' Clg! I 2.82 pCl!

5.22% I mremA DfInklnnWbtor (DWI Limit Sample Input Vdue Clecked (pClkj, ucl, 25 mrern/ TEDE A.-Aflowed Kito for from Column A or This Sample Isotope etc.) '.Sof Total Limits jpC/ag) 25 nu env. TEDE a lmremr TEDE Rnr nO I Ami.241 0.002 0.163% 9.9 0.01 0.01 0.01 l9O Ani1241 C.14 0.23 18.293% 2-60 260 0.85 2.81 ,EC14_

CO-60 000 . .000 0.00 cCo$O

.4 Ci.137 1.00 81.301% 6.6 .6Z0%U37P~ 3.79 s.137' t,=X S Eu-152 O.0O% 10.1 0 0.00 1W 0.00 lEU.152 a.H-3 0.000% 132 0.00 .0.00 0.00 l Hi-363 O11.3 . 0.000% 747 0 0.00 0.00

.a Put238 0.000% 1.8 . 0.00 , 0.00 0.00 0Pu2 3d Pu 239 0.003 0.244% 1.6 a001' 0.01 0.05 Pu.239 Pu,241 0.000% 86 0.00 .0.00 0.00 Pu.241 11 SF.90 ______ 000% 1.2 .10.00 . I~ 0100 0.00 }Sr.90 1.23E.00 I 100.000'A 4.62. 23.14 4.62 6.652 1- 0213- -

'I,'; - I Maxlmum Petlmsibie ... Maximutm . To Use This Wnformaion,1 pCIfn.q' Peitlissble pClfg lSample Input Units Must Be In 125mi em.9,) (4 nuemnj) nCI/a ATTACHMENT .6 6

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

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 prelpost 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 coricentratiouis are noted with yellowlshaded 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-137 for Positive Nuclides -This table provides the calculation methodology for determining the surrogate ratio to Cs-137 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'lllustrated in Table 5.

Table 5: Effective DCGL Calculator for Cs-1 37 (in pCilg) This table provides the surrogate volumetric modified Cs-137 DCGL, 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 DCGL,. Using the above data selection logic tables the calculated Cs-1 37 volumetric DCGLI is 5.73 pCig. 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).

1 ATTACHMENT 1-

TABLE 1. Data U*lUna IoClt9a C.14 SJ 9.UE-60 I 4.02EOOI 1I0E41 7O.004 r 5.90E-01 1Sit014 4 0.00-sxs1tm 7-ME.00 I 8S2E.02 MIMS E.00 _ 4.07E402 IS1,1122 o" CV. .od AYAMt7?W14.Stps eS.t l1 a."E40 ,I 5.29E02 l 2_19E

'II 11,tIIl11 S1111.4u3 7.46482 61

.406E42 5.27E.0 I 2.15-E01 1.26E-01I 40.02 II tCOEi2 I 23tl£-01 5(51.1241 rILtet I 1.15E-0l -

EO00 la 57241571 ICVAris-fufltYVoClnflh.So¶OM40114,IPesfitff01I I 3 00E02 1410.40 83.00E42 4a4 1 t fsofcv r 4 Oll PMsar rsofrt e o.1 .e1f 10.Y-OO I 1.J0E402 1.30f.0 I1.26Ef-0 8.E402 I A-.l8E-0 I 51002 S.00E40219 OOE41 1.7E02 I L7E42 I 2.02E42 CVYvloWE50.2 t Ld.APIet

. 01.

£

..xI I *st4. cv Tutu rIot, 50*. An-f. ot K:

. I

11. 1 T1.7 I112 112 44051 1 t0tJ6.1tS I 1t92523275 1 11019.5925 IJfC tu.is LOCAOM-DOI'tm 1 Hi, l , t go l

- I *59E41.-

I CVTIWH CVTw"Ul Sodioml C " .OtI . -7.93TE46 - I 9.01tEh-I ' - In tbeub . too 4 62.2 E I 3.27E42 541 4 1 5t145t5 . e^CVY~o dSDA~t2,lilft&WtspbelI 5"

_ oa* CV Trdo Sd hY.Im. l~ t Sawrrh * .04.

150.O I 520.2;E02 I i*s.1 N01 10.11CV Yard SodAT.124.50 54.0.0.4,4.t1 1.t3U41 i 8 t3E.02 I 4 OE42 545.

565

_ -I tl4174 I541 S1cvr~dtd utAX.1.471, .lIdle0t 1t25E41 i C.M-2 I - AS.720 AL1f. 3AS 9.CV S5 rfm CV.ladL,0.1 3.10f4 1 *.U41.0 1 7-00E4-- 541 i I sstnsn Sa CV Tmw lost r item CV.&W iI OL ALWt. 3.1. 90)

.7tE.08

_II s11t1n., 7ICVA 680 I

_? I I1XS3146 I 510ICVY ud. C

@Id.4tt' 0t1 I-rr i .00 - I i IdP 503 5320I a

4 3.21E01 I .70E.02I A x1,.141 2LUE.00 - I 3.23E.02 I 4IE42 I 8.94t01 I 1.16E402 10S

_ 51 :114141 _____

KEY IYellow Shaded Background - Positive Result I I t  ;; .Gray Shaded Background

• MDA I 2

TABLE 3 -Decayed Listing of Positive Nucildes & MDAs Removed (pCUg)

= SaifCSample U0 Loteson.1Oescrpilon n13 SraO Co.tO CZ.13? Toltl pCi'g CV Tunnel CV Tunnelledimen Composile, OI1 9.O1E*00 8.59E.41 1.17E-03 1ust7s.

2 SXS022221 Subsulace Sample *20 (0E, AYn1211, OS_ 5.36E.O1 e.u 3 SX1t1043 llorthCVYardSoll 127, S12'E, SarmplnoV 012 4.2E.00 8.55EtO _ 6.os 4 5X1110t9 llorthCVYardsoltAY-1271110'f, Sample 3.Ot.I 2.78EOO_ 1.24E+OO J.02 6 SX1115 llorth CV Yard Soil AY128C604'EL,Sample

• 2. Oti 4.47E400 1.74E-OO 6.21 a s1X11122 lNorthCVYardSolIAY.12, ?Sft'f Sampleb2. 01 3.15E_00 4.60E*00 7.Ts 7 SXSt11S30 orthCV Yard SoilAX.120.803 fl. SampleIA.O O 4.58E*00 2.44E402 2.18E+01 26.42 6 SXS11132 . orthdV Yard SoNAZ-0O. Sample 6 . 01 2.73E*00 2.50E*OO 123 9 SXS1270 AXI12, 3.3, SoiCV St Side S'Vrom CV, *0o01,0L 2.18E-O1 21.82 10 SX101.7tt Ai 12L3.i. Sod.CVTunnelfaattSFromCV6SW00EUOt1 J.14E-OO 4.t 11 SX12645 Anulut Wel, A.Z. to 1Art to.

Deptr. _ __ 5.74ET 0.67 13 5X1t2S71 CVAreSraalosrdtartPldie.lMddlo 2ayUp, 011 5.37E.O1 0.64 14 5xst2172 CV Area

• ot Ysrd Dlrt Pie. Bottom (aloto0o center) .au 9 S8E.02 0.10 15 SXL62140 feat CV Yard, SoutlPOl* e on Wast Side (I' Depth).

Cep.....at.,

O . __ _ 7.99E.O1 0,o0 Is SXS1342 Soi Pile, CV Yard Three feet on fail Side, SI-37, OLI 5.81E01 o.ss 17 SXSL35145 fasCVYord Soil Pilo 0r on lost Side I' Doepth). 01.0 1.22E.OG 1.22 Is SX5L3149 Soil Pit, CV Yard, SIRfeet on last Side, SR31. Ott 2.90E401 0.29 1s SIL3163 font CV Yard, SoIP9 Top 1' Depth). IlOL 2.91E-01 0.29 21 SXSJ4142 CV Yard Soil .West Side. API.01 7; 8.94E.01 0.89 22 SXSL414I CVYtrd Soil .West Slde. AP. Ot1 0 4.97E.01 o.s0 22 SXSL4149 CV Yard Soi . W*,t Si. APt 7. Otl 6.74E-02 3.87EOO s.s m c)

H:

TABLE 4 -Ratio To Cs-137 for Positive Nuclides SIIjC Sampe II* LoeationDescription H823 Sr.S0 Co-SO Cs.137 Total

. I CV Tunnel CVTunnel SedimentCompos Ot.1_ 7.71E.03 r.35E.04 1.00E4OO 1.01

-. 2 M11.61215 - Subsufaee Sample*29 (0.61. AYr126. OtI 1.tOOE+0O 1.00

_ X5110052- llorthCVYardSod BA.127,81rfl, SamPSeS.0t.2 4.91EOO 1.OOEOO L.e1 4 SX1110tS- liorth CVYard Soi AY.127, $tO tL Sample O3.01t1 2.23E.OO 1.OOEOO 323 S.- SX W S111 liorhCVYsrd 604AY.12.04 ttI, Sample 62,Ot1 2.57EOO . 1.OOE#0O 357 6' SXt11122 Ilorth CV Yard Soil AY-2.1;7r tl Sample . 2.011 6.5E.01* -. 1.00E4OO . 1.68 7 SXSL138. llonth CVYard Soil AX.127.S03't, Sampled a.tt 2.10E401 t.12E.03 1.OOEeOO 1.21

. S1S1IM32 11orthCVYardSolAZ.130,Samplel.0Ot1 1.Od9EOO . 1.io EOO 2.09 I SXSLI270 AXI112t133,SoiL CV SESide 6' From CV SOOEl.. Ot1 1.-OE-00 1.00 10 11St11211 AX.128, 3.1, Soil, CV Tunnel feot S from CV. S00' 1,OLt 1.OOE*oo 0.00 11 SXSL2645 Anuiusl Wel. A..2 to 10' Oepth. .O1 1.OOE4OO 0.60 13 SXSt281 CV Are tfatl Yerd Dirt Pile . Lliddia. 1 2WV Up 01.1 1.00E+OO 1.00 14 MXIL2672 CV Area Fast Yard Dirt Pile Bottom .1isolop center). O. 1.00E400 1.00 IS 5XS32140 lostCVYard. SoilPile al'on ett Side 1Deplth) Ot1 t1.OOEOO 1.00 1C SXSL3142 Soil Pile. CVYard, Three Feet on fast Side. SR-3.?, OIt 1.OOE.O0 1.00 1? SXSL314S fastCVYard. Soi Pile a 3 on fast Side 6 Dlepth). O1 1.00E+OO 1.00 1S SXSL3149 SoNPile. CV Yard. Six Feet on East Side, SR17? 01tt 1.OOE-oo . 1.oo 1d SXS13153 fastCVYard. SoilPile @ToplrODplth). OL1 1.00E0oo 1.00 21 SXSL4142 CV Yard SoiN West Side. API.7, O0. 1.OOE*O0 1.00 22 SXSL4142 CV Yard Soil Wast Side. API.7,011 1.OOE-OO 1.10 23 SXS11 49 CVYard SoCl-We lt Side. APt.7 O_011 _OL _ __ _ 1.74E.02 t .OOE00 O 1.02 1F1168n* 1.95E*00 7.71E.03 6.42E.03 1 2.96

- n - -i: ... 1-.... &:-:1 Sigma= I -E+O' P -- + -. -1. 4.

i -' . ...

0.22% 1 33.f4% 2U.96%

3

Table 5 I'ISNJEC~AV:'-- 1' 75%- 2Tot~i AcIMtVUmt DCGL4PI; ti'Admlnhsfri tL-t3 Effective DCGL Calculator for Cs-137 (In pCUIg) 1 16.98 jpCi1q 1 12.74 -IPClqiig i9 SAMPLE I`UMBERg)=ICV YARD SOIL & BOULOER SAMPLES 1;~Cur137 Umt C.137 Admirlns-6iateILihmtl I 5cZi 17.45% ... 25.0 mremly TEDE Limit 1 5.73 pCI!q 1 4.30 ICI1 -- -

7 7.7q%

mremAl Drinkinn Water MflM%IU itm F Check: for 25 nyemiV I.

Simple Input (pcI/g, uCI, % 25 mrem~t TEDE A . Allowed pCI1g for Value Checked from This Sample Isotope of Total, etc.) %of Total Limits (pCIlg) . i.P. 25 mrem'y TEDE , ,7e DV1 Column A or B mremly TEDE ii',!'-

_L1 . , . j I Am.241 0 000%, 9.9 0 00 0 00 0 00 kl-- Am-241 2I C-14 0.000°,o 2.0 . 0 00 i , 0 0 00 I t-14 3 Co.60 0.0064 0216% 3.5 Y O 0 0O 0 05 Co-60 41 Cs-.137 1.0000 33.738% 6.6 5.73 5.73 3.79 Cs-137 8 Eu.152 0 000% 10.1 0 0 0 00 Eu-152 a H.3 1.9499 65.786% 132 . 11.17 11 17 0 37 Hm3' C)Y. 0 00 HIM 7 Ni.63 0.000% 747 0 00 0 00 F., a1Pu.238 0 000% 1.8 0 00 0 00 0 00 Pu-238 9 Pu.239 0 000% 1.6 0 00 0 00 0.00 Pu-239 10 Pu-241 0 000% 86 0 00 0 00 0 00 Pu-241 Ml3 III Sr290 0.0077 00260% 1.2 00.04 3030 04 0.16

_ _ I _ v_ I Sr-90 2.96E4*00 ¶00.000%169380 4.364 1 0.312 .

Maximum Permissible M.Maximum ToUseThIsIntormatfon, .

pCi aD Permlisible pCIDg Simple Input Units Must Be h It2 mromE 1 I IJ mremMt0 I nirl/t not X of TohfLI

.__ .. , _. I 4

2350 INSTRUMENT AND PROBE EFFICIENCY CHART I

Inst.#

02/22105 Added 2350-1 #126218 with 43-68 #095080 and 2350-1

1. 1261-88 with 43-68 #099186. Returned from DURATEK following calibration. Typical - 2" by 2" Na! (w) Inst. Response Cal Due AP ff Probe # Cal Due I

cpmI/mRh 95361 6/25/05 P& W _ _ 25686 Pk. 6/28/05 211,799 98620 12/01/05 G&W :196022 LPk 12/01/05 204,609 98642 9/28/05 B&W . 185844Pk 9/28/05 209,771 98647 11/02/05 G &Y 211667 Pk 11/02/05 213,180 117566 01/05/06 ROR _402PK 01/13/06 205411 117573 5/18/05 O& Y _211674 Pk 5/18/05 212,173 129407 12/17/05 White = 206280 12/17/05 222,724 129423 5/18/05 P &Y 211687Pk 5/18/05 213,539 129440 11/01/05 O&W 20938Pk: 11/01/05 196,636 126198 11/22105 'R&W _____ 196021 11/22/05 210398 D xemat Insnme /Probe CaL Due I Cesim only iuments (10lmV to 100)

ATTACHMENTACH

Nal Scan MDC Calculabon- CV Soil.mcd Nal Scan MDC Calculation

- . 4,2 b:= 200 p:-.5 HSd i 56.42 SR-:is d .-- 1.38

- 4 Conv := 206 msoutpui:=.:1.157-10 HSd

- = 2.257 ObservationInterval (seconds)

SR SR ObservationInterval (seconds) i 60(b-)

60 MDCRi: (d rig) 60 MDCRi = 100.629 net counts per minute MDCRi l .E fV-u-'surveyor := 5r MDCRsm - or I 142.311l net counts per minute MDCRsurveyor MDER:=

Conv MDE R. .0:691 ^ jiR/h MDCscan:= MDER MSoutput-1-103

.,. " - - ",- , . '. , , - I MDC ',5.9710 pCi/g M19105 4 nf 5

.A-TACHM2NLL-1~ ,--

Nal Scan MDC Calculation- CV Soil.mcd where:

b = backgroundin countsper minute b backgroundcounts in observationinterval Conv - Nal manufacturersreportedresponse to energy of contaminant (cpm/uR/h) d = index ofsensitivity (Table 6 5 AMRSSIM), 1.38 = 95S%ofcorrect detection's, 60%false positives HSd =hotspot diameter (in centimeters)

AfDC,,,, = Minimum Detectable Concentrationforscanning(pCi/g)

MDCRj = Minimum Detectable Count Rate (ncpm)

MDCR,,,. = MDCR, correctedby human performancefactor (ncpm)

MDER = Minimum DetectableExposure Rate (uRlh)

MS,,,p, = MicroShieldoutput exposure rateforI pCi/g ofcontaminant (mwRh) 0j = obervationInterval (seconds) p = human performancefactor SR'= scan ratein centimetersper second NOTE This is an example of an MDCscan calculation that is valid for a specific set of site conditions, and assumptions. These variables include the computer'model used, soil density, soil moisture content, surveyor-efficiency, ground cover, soil background radionuclide content and'other variables that influence calculated results. However, this scan MDC has been deemed appropriate for initial survey planning purposes at this site locabton..

312712005 .5of 5 ATTACHMC h4

MicroShield v5.05 (5.05-00121)

GPU Nuclear Page  : 1 File Ref:

DOS File : SOIL.MS5 Date:

Run Date: March 19, 2005 By:

Run Time: 8:45:26 PM Checked:

Duration : 00:00:07 Case

Title:

Soil y

Description:

Cylinder Slab Source tG eometry: 8 - Cylinder Volume - End Shields Source Dimensions Height 15.24 cm 6.0 in Radius 28.2 cm 11.1 in Dose Points X Y z

1. 1 0cm 27.94 cm 0cm 0.0 In 11.0 in 0.0 in Shields Shield Name  ; Dimension Material Density Source 3.81e+04 cm 3 Concrete 1.45 Air Gap Air 0.00122 Source Input Grouping Method : Actual Photon Energies Nudide curies becquerels - Ci/cm 3 Bc[~/CM 3 Ba-137m 5.2227e-008 1.9324e+/-003 1.3717e-006 5.0753e-002 Cs-137 5.5208e-008 2.0427e+003 1.4500e-006 5.3650e-002 Buildup The material reference is: Source Integration Parameters Radial 60 Circumferential 60 Y Direction (axial) 60 Results Energ Activity Fluence Rate Fluence Rate Exposure Rate Exposure Rate MeV photons/sec MeV/cm 2 /sec MeV/cm 2 /sec mR/hr mR/hr No Buildup With BuilduD. No Buildup With Buildup 0.0318 4.001e+01 6.784e-06 8.209e-06 .5.650e-08 6.838e-08 0.0322 7.381e+01 1.304e-05 1.588e-05 1.050e-07 1.278e-07 ATTAG'HfAEWr. .,-- -"..3 , i, dr .

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, QESFile : SOIL.MS5

. gntbiate: March 19, 2005 RurrTime: 8:45:26 PM Duration: 00:00:07 Energy Activity Fluence Rate Fluence Rate Exposure Rate Exposure Rate MeV photons/sec MeV/cm'2/sec MeV/cm 2 /sec mR/hr mR/hr No Buildup With Buildup No Buildup With Buildup 0.0364 2.686e+01 7.221e-06 9.426e-06 4.102e-08 5.355e-08 0.6616 1.739e+03 5.967e-02 1.023e-01 1.157e-04 1.983e-04 TOTALS: 1.879e+03 5.969e-02 1.023e-01 1.159e-04 1.985e-04 ATTACHMEN - - r-' ' =.I--/:' -

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lI SCAN AREAS IN 0L9 Survey Unit Survey Unit I Grid 0L9-1 Grid 0-L9-2 1 AE-152 X AF-143 X 2 AE-151 X AG-143. x 3 AE-149 x AG-142 X 4 AE-148 x AH-141 X 5 AE-147 x Al-143 X 6 AE-145 x AJ-143 X 7 AE-144 X AJ-140 X 8 AD-148 X AK-141 X 9 AD-145 x AK-139 ._.X 10 AF-147 X AL-142 ._x 11 AF-146 x AL-137 x 12 AF-145 X AM-143 X 13 AG-144 X AM-140 .x 14 AH-144 X AN-141- x

• 15 Al-146 X AN-139 X 16 Al-145 X AO-143 X 17 Al-144 X AO-141 X 18 AJ-145 X AO-140 X 19 AJ-144 X AO-139 x 20 AK-147 X AO-138 X 21 AK-146 X AO-137 x 22 AK-144 X AP-141 X 23 AL-147 x AQ-142 X 24 AL-146 X AQ-141 X 25 AL-144 X AR-141. x 26 AM-147 X AS-141 x 27 AM-146 X AT-140l X 28 AM-145 X AT-139 X 29 AN-145 x AT-1 38 x 30 AN-144 X AT-137 X 31 AO-145 X AT-136 X 32 AO-144 X AU-138 ... _X.

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ATTAA1AIENT CriWE -~ 2. f

Site Report Site Summary Site Name: OL9-1 SURVEY UNIT Planrres): B3HB Contaminant Summary NOTE: Surface soil DCGLw units are pCVg.

BuLdWng surface DCGLw urnits ae dpm/IO00 cnm.

Sceening Contaminant Type DCGLw Value Used? Area (m2) Area Factor Cs-137 Surface Soil 282 No 1 28.7 25 4.7 100 3.6 400 3 2.500 2.3 10,000 1 9

1 Lz wc COMPASS v1.0.0 3125/2005 Page 1

Surface Soil Survey Plan Survey Plan Summary Site: 0L9-1 SURVEY UNIT Planner(s): BHB Survey Unit Name: 0L9-1 Survey Unit - SW Quandant Comments: Class 2 Area Entered as Class I Area (m2): 5,800 Classification: I Selected Test Sign Estimated Sigma (pCig): 0.29 DCGL (pCi/g): 2.82 Sample Size (N): 15 LBGR (pCi/g): 2.4 Estimated Conc. (pCilg): 0.6 Alpha: 0.050 Estimated Power 1 Beta: 0.100 EMC Sample Size (N): 15 Scanning Instrumentabon: 2" by 2" Nal Detector (w)

Prospective Power Curve

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• 1-beta vl.0.O 3/2512005 Page 1 COMPASS v1.0.0 COMPASS 3125=205 Page 1

Surface Soil Survey Plan Contaminant Summary DCGLw Inferred Modified DCGLw Scan MDC Contaminant (pCI/g) Contaminant Ratio (pCUg) (pC1lg)

Cs-137 2.82 N/A NIA N/A 5.971 Survey Unit Estimate Reference Area Estimate (Mean +/- 1-Sigma) (Mean +/- 1-Sigma)

Contaminant (pCUg) (pCiIg)

Cs-137 0.56 t 0.29 0.28 +/- 0.39 C.1

'umr vi.u.u 3125/2005 Page 2

%IwMrp.QS V.U.O . 3125/200'i Page 2

I r son (EMC)

IV No adtion samples are requred because the actual can MDC i5less than the recured an MDC ng instrumentation used.Then enter a scan MDCfor each ALCULATE button to viewthe integrated survey design scan MDC and DCGLunits are in pCi/g.

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Scanning Instrumentation Descripion: 12' by 2' Nai Detector (w)

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BoundedAreae(m): 1 386.7 AreaFactor l N/A AreaFactor: l 3.03 Bounded Area(m): l N/A ii DCGLw. j Scan MDC Required: l 2.82 8.5

.Post-EMC N:Il 15 F7 Enable Training Card Help BACK EX vl.OO -

Site Report Site Summary Site Name: 0L9-2 SURVEY UNIT Pla iets): BHB Contaminant Summary NOTE: Surface soil DCGLw units are pCIg.

Buidingsufface DCGLw units are dpm/100 acT.

Screening Contaminant Type DCGLw Value Used? Area (ml Area Factor Cs-137 Surface Soil 4.30 No 1 28.7 25 4.7 100 3.6 400 3 2,500 2.3 10,000 1

'3 CI C)

COMPASS vl.0.0 31p D05 Page 1

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Surface Soil Su"rvey Plan Survey Plan Summary Site: OL .9-2 SURVEY UNIT Planner(s): BH-HB Survey Unit Name: OL .9-2, SW Quadrant Comments: ClOlss 2 Area Entered as Class Area (m2): 7,630o Classificcation: 1 Selected Test: Sic Estimated Sigma (pCig): 0.29 DCGL (pClg): 4.3 Sample Size5(N): 18 LBGR (pCVg): 1E Estimated Conc. (pCilg): 0.6 Alpha: o.a)50 Estimated Power 1 Beta: 0.1 100 EMC Sample Size (N): 18 Scanning Instrumentation: 2" by 2" Nal Detector (w) .

Prospective Power Curve I_ __ _

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-Power - DCGL - - Es-nated Power

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• 1-beta 312512005 Page 1 COMPASS vl.0.0 COMPASS v1.0.0 312S12005 Page I

Surface Soil Survey Plan Contaminant Summary DCGLw Inferred Modified DCGLw Scan MDC Contaminant (pCUg) Contaminant Ratio (pCI1g) (pCUg)

Cs-137 4.30 N/A NMA NA 5.971 Survey Unit Estimate Reference Area Estimate (Mean t 1-Sigma) (Mean +/- 1-Sigma)

Contaminant (pCUg) (pCkg)

Cs-137 0.56

• 0.29 . 0.28

• 0.39 C1 i

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vl.a.0 UMPASS VI.0.0 3/2512005 Page 2 COMPASS 312512005 Page 2

-___- ___-___________ --.. - _x son (EMC)

No addtional sampes are reqked because A~) the actual scan MDC isless hn the reqtked scan MDC ng instrumentation used. Then enter a scan MDC for each 6LCULATE button to view'he integrated survey design can MDC and DCGLunits are in pCig...

6canning Instrumentation Uesmptb n: jZ by 2' Nal Detector (w)

-Enter Scan MDC Contaminant I Scan MDC I Cs-1 37 5.971 NUREG.1 507 SC,-n :.MDC: l SA'VE .11 CACLT 'co Statistical Design. Hot Spot Design N: l 18 Actuil Scan MDC 5.971 Bounded Area 1:

(mr l 416.7 AreaFactor. . NIA AreaFactor l 2.99. BoundedkArea(rr): l NIA DCGLw: l 4.30 -Post-EMCN: 18 Scan MDC Required: 12.9 F Enable Training Cerd Help 4-,

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~AG IAF-1 8m 143 142141140139 138137 136135 Attachment 7- 2 A

SR-132 Cs-137 Values Grid No. pCilg SPx AM-148 0.9 SP2 0.35 SPI AM-147 0.4 SPI 0.8 SP2 AM-146 0.07 SP1

< 0.13 SP2' AM-145 0.7 SPI 0.4 SP2 AL-148 0.6 SPI 0.5 SP2-.

AL-147 0.6 SPI 0.8 SP2 0.5 SP3 0.6 SP4 0.2 SP5 AL-143 1.1 SPI 0.7 SP2 Al-146 <0.14 SP1 0.19 SP2 0.4 SP3 0.4 SP4 1.1 SP5 AH-146 0.8 SP1 0.9 SP2 X-0.5 SP3

-0.3 SP4 0.12 SP5 Mean=> 0.56.

Sigma=> 0.29 ATTACHMENT e ._ ,-

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ExhiW# I ORIGINAL Survey U~nf # 0L9 l

I Surey Unit L0cftioI J First Energy/Penelec Property - Southwest

._ Quadrant Date - 2105 Time 0800 Inspection Team Members D.Sarge Hr*,,,,,Yes No N/A' Inspection Requirements (Check the appropriate Yes/No answer.) Y

t. Have suftkient Sureys (tue.. po; remedsiaon. ch efiatton. etc.) beefl cbtained for te srey un C7

[2. Do the surveys (from Question 1) demonstrate that the survey unAt w most kely pas the Fss? X

. Is the physIcal work (i.e.. remediation & h sekeepfrig) In or around the survey unit completc X

4. Have 2l tools, non-permanent ecupment. and material not needed to perform the FSS been removed? X

5. Arm thO survey surfaces relatively free of loo" debris (I.e.. dawlconcrete dust metal fgIngs. etc.)7 X

6. Ate the Survey surfaces rmlativuty free el liquids (i.e vwatcr, moiture. oll. ctc.) - X

7. Are the survey surfaces free of all paint, which has the potrital to shield sdtatlcn7 .x ;

8. Have ta Surtace Meaautement Test Areas (SMTA) been established? (Refer to Exhibit 2 for instruccn&)

9 Have tie Surface Measurement Test Areas (SMTA) data been ";cte? (Refer to Exmat 2 tor intructlons.) X i 1a. Are tMe survey sraces ea~iiy acceswible? (No scafftoldng. high reach. etc. is needea to piFdcm the FSS) X 1t. Is lighlng aaequate to perform the FSS l

12. IS Mtnarea irWustialy Safe to padorrm tha FMS7 (Evaluate potential fall tnip huards. confined aces, etc.) l X l C.;

13 Have hotographs been taken showing the overalt conditon or the area7 lX 14 Have all unsatsfaetory conditlons been resolved? x NOTE: It a No arswer I obtain" above, the inspector should irnmeddtety ccTect the problem or ifutlate corretive actions through Lh:

responsible zile deparnment. as appticable. Document actions taken and/or 3uafIeClonis in the Commeontt aeaon below. Attacm Uldclonal sheets as necessary.

Comrments:

Response to Question 3: A rad material storage area is currently within the bounds of the survey unit. Notified acting RSO.

Response to Question 4: Numerous piles of building matenials, wood, scaffold, fence poles are present In the survey unit. Notifed L Sharnenek Response to Question 819: Two concrete pad areas are within the survey unit. (see endosed photos). These surfaces are designated as survey units SS24 and GAt and GA2. Notified the survey designer.

Response to Question 12: Stipf(all hazards are present in the survey, unit. Personnel entering the area I performing the FSS will be briefed on the hazards present in the area. Notified L Shamenek.

Survey Unit Inspector (printisign) l D Sarge I Date l 3 Survey Designer (puint/sign) c Rio I4----/':I)Date oz/

3