ML040280036

Calculation No. YA-CALC-00-006-03 Determination of Area Factors for Soil at Ynps Site.

ML040280036
Person / Time
Site:	Yankee Rowe
Issue date:	01/19/2004
From:	Balineau G, Bisson J, Cardarelli R, Harrington C, Keefer E, Littlefield P Yankee Atomic Electric Co
To:	NRC/FSME
References
-RFPFR YA-CALC-00-006-03
Download: ML040280036 (39)

Text

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CALCULATION TITLE PAGE Determination of Area Factors for Soil at YNPS Site Title YA-CALC-0O-006-03 Calculation Number Executive Summary:

Running the probabilistic modules in version 6.21 of the RESRAD computer code provided peak-of-the-mean doses, which were then used to calculate nuclide-specific area factors for residual radioactivity in soil. The area factors are intended for use In conjunction with soil-based derived concentration guideline levels (DCGLs). The approach used to calculate the area factors was the same as that used to calculate nuclide-specific, soil-based DCGLs. A total of 400 RESRAD executions were performed, 20 for each nuclide that may present a significant dose impact for license termination at the Yankee Rowe site. The area factors calculated here provide additional assurance that the radiological criteria for license termination established in IOCFR20, Subpart Ewill be met at the Yankee Rowe site.

Approvals (Print & Sign Name)

Preparer Joe Bisson 2.4/. 6M.A L Date: /p-3/--3 Preparer Ron Cardarelli Date:

Reviewer Estella Keefer Date:

Reviewer Peter Littlefield Date:

Reviewer Cindy Harrington Date:

Aporover (Coanizant Manager): Date: I As "OtA DCM FORM 1.1A 54,)AUqe6_"s I Page 1 of I

CALCULATION TITLE PAGE Determination of Area Factors for Soil at YNPS Site Title YA-CALC-00-006-03 Calculation Number Executive Summary:

Running the probabilistic modules in version 6.21 of the RESRAD computer code provided peak-of-the-mean doses, which were then used to calculate nuclide-specific area factors for residual radioactivity in soil. The area factors are intended for use in conjunction with soil-based derived concentration guideline levels (DCGLs). The approach used to calculate the area factors was the same as that used to calculate nuclide-specific, soil-based DCGLs. A total of 400 RESRAD executions were performed, 20 for each nuclide that may present a significant dose impact for license termination at the Yankee Rowe site. The area factors calculated here provide additional assurance that the radiological criteria for license termination established in 10CFR20, Subpart Ewill be met at the Yankee Rowe site.

ApDrovals (Print & Sian Name)

PreDarer: Joe Bisson Date:

Preparer: Ron Cardarelli 190Q C, Q &-tL~.-Lt Date: %2 \3A l °3 Reviewer: Estella Keefer Date:

Reviewer Peter Littlefield Date:

Reviewer: Cindy Harrington Date:

ADDrover (Cognizant Manager): Date:

Pat a.tr .,or DCM FORM 1.5-1A Page 1of I

CALCULATION TITLE PAGE Determination of Area Factors for Soil at YNPS Site Title YA-CALC-00-006-03 Calculation Number Executive Summary:

Running the probabilistic modules in version 6.21 of the RESRAD computer code provided peak-of-the-mean doses, which were then used to calculate nuclide-specific area factors for residual radioactivity in soil. The area factors are intended for use in conjunction with soil-based derived concentration guideline levels (DCGLs). The approach used to calculate the area factors was the same as that used to calculate nuclide-specific, soil-based DCGLs. A total of 400 RESRAD executions were performed, 20 for each nuclide that may present a significant dose impact for license termination at the Yankee Rowe site. The area factors calculated here provide additional assurance that the radiological criteria for license termination established in 10CFR20, Subpart E will be met at the Yankee Rowe site.

Approvals (Print & Sian Name)

Preparer Joe Bisson Date:

Prevarer Ron Cardarelli Date:

Reviewer Estella Keefer 2 1 ' F Date: / / J/o3 Reviewer Peter Littlefield Date:

Reviewer: Cindy Harrinaton Date:

Approver (Cognizant Manager): Date:

pc ' DCM FORM 1.5-1A

'P"qf ; Page 1 of 1

CALCULATION TITLE PAGE Determination of Area Factors for Soil at YNPS Site rile YA-CALC-00-006-03 Calculation Number Executive Summary:

Running the probabilistic modules In version 6.21 of the RESRAD computer code provided peak-of-the-mean doses, which were then used to calculate nudide-specific area factors for residual radioactivity in soil. The area factors are intended for use In conjunction with soil-based derived concentration guideline levels (DCGLs). The approach used to calculate the area factors was the same as that used to calculate nudide-specflic, soil-based DCGLs. A total of 400 RESRAD executions were performed, 20 for each nudide that may present a significant dose Impact for license termination at the Yankee Rowe site. The area factors calculated here provide additional assurance that the radiological criteria for license termination established in I0CFR20, Subpart Ewill be met at the Yankee Rowe site.

ADorovals (Print & Sign Name)

Preparer Joe Bisson Date:

Premarer Ron Cardarefli Date:

Reviewer: Estella Keefer Date:

Reviewer Peter Uttlefield Z 4W z / Date:

Reviewer Cindy Harnnoton Date:

ADmrover (Cognizant Manage!): Date:

pO,~fy r DCM FORM 1.5-1A Page I do

CALCULATION TITLE PAGE Determination of Area Factors for Soil at YNPS Site Title YA-CALC4O-006-03 Calculation Number Executive Summary:

Running the probabilistic modules in version 6.21 of the RESRAD computer code provided peak-of-the-mean doses, which were then used to calculate nuclide-specific area factors for residual radioactivity In soil. The area factors are intended for use in conjunction with soil-based derived concentration guideline levels (DCGLs). The approach used to calculate the area factors was the same as that used to calculate nuclide-specific, soil-based DCGLs. Atotal of 400 RESRAD executions were performed, 20 for each nuclide that may present a significant dose impact for license termination at the Yankee Rowe site. The area factors calculated here provide additional assurance that the radiological criteria for license termination established in IOCFR20, Subpart Ewill be met at the Yankee Rowe site.

ADorovals (Print & Sian Name)

PreDarer Joe Bisson Date:

Preoarer. Ron Cardarelli Date:

Reviewer Estella Keefer Date:

Reviewer Peter Uttlefield Date:

Reviewer CindoHarrinaton danaaewr Date: 110710 Arorover (Cognizant Mana-ger): Date:

DCM FORM 1.5-1A Po jo -S' Page 1 of 1

Project: Yankee Rowe License Termination Caic. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 2 of 35 Table of Contents Section Paae I. Purpose ............................................................... 3 II. Summary of Results ................... ............................................ 3 Ill. References ............................................................... 5 IV. Assumptions ............................................................... 6 V. Method of Calculation .................... ........................................... 6 VI. Calculations ............................................................... 9 Tables Page Table 1: Nuclide Specific Area Factors for Soil at Yankee Rowe ........... .................. 4 Table 2: Base Case Peak-of-the Mean Doses . .................................................... 7 Table 3: Contaminated Fractions Vs. Size of Contaminated Zone .......... ................. 9 Table 4: RESRAD 6.21 Results - Peak-of-the-Mean Doses ............ ....................... 10 Table 5: Relative Fractions for Peak-of-the-Mean Doses by Nuclide .......... ............... 11 Table 6: Area Factors for Contaminated Soil at Yankee Rowe ........... ..................... 13 Table 7: Input Parameters for Soil Derived Concentration Guidelines Levels ....... ...... 17 Figures Paae Figure 1: Relative Dose Vs. Contaminated Zone Area ................ .......................... 12 Figure 2A: Area Factor Curves .................................... ........................... 14 Figure 2B: Area Factor Curves . ............................................................... 15 Figure 2C: Area Factor Curves ..................... 16

Project: Yankee Rowe License Termination Catc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 3 of 35 1.Purpose This analysis is performed to calculate nuclide-specific area factors (AF) for use in conjunction with soil-based derived concentration guideline levels (DCGLs) [1] in order to provide additional assurance that the radiological criteria for license termination established in 10CFR20, Subpart E are met at the Yankee Rowe site.

II. Summary of Results Running the probabilistic modules in version 6.21 of the RESRAD computer code provided peak-of-the-mean doses, which were then used to calculate AFs for residual radioactivity in soil. The approach used to calculate the area factors was the same as that used to calculate nuclide-specific, soil-based DCGLs

[1]. A total of 400 RESRAD runs were made, twenty for each of the 20 nuclides that may present a significant dose impact for license termination at the Yankee Rowe site [2]. Except for a few RESRAD ingestion pathway input parameters that are influenced by changes in the size of the contaminated zone, values for RESRAD input parameters are the same as those used in the DCGL calculation [1]. The values for nuclide-specific area factors are summarized in Table 1.

Project: Yankee Rowe License Termination Calc. No. YA-CALC-004006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 4 of 35 Table 1: Nuclide Specific Area Factors for Soil at Yankee Rowe Area Factors for Varying Contaminated Zone Areas (mi2)

Nucllde 13022 11500 10000 7500 5000 2500 1000 750 500 250 H-3 1.OE+00 1.1 E+00 1.iE+OO 1.3E+00 1.5E+00 1.8E+00 2.OE+00 2.7E+00 4.OE+00 8.OE+Oo C-14 1.OE+00 1.IE+OO 1.3E+00 1.6E+00 2.3E+00 3.7E+00 6.4E+00 9.7E+00 1.7E+01 4.5E+01 Fe-55 i.OE+00 I1.1E+00 1.3E+00 1.6E+00 2.2E+00 3.4E+00 5.2E+00 7.OE+00 1.1 E+01 2.1E+01 Co-60 1.OE+00 1.OE+00 1.OE+00 i.OE+00 1.1 E+OO 1.iE+OO i.1E+O0 1.2E+00 1.2E+00 1.3E+00 Ni-63 i.OE+00 1.iE+O0 1.2E+00 1.5E+00 2.0E+00 2.8E+O0 3.8E+00 5.1 E+00 7.7E+00 I.5E+01 Sr-90 i.OE+00 i.OE+00 1.i E+00 1.1 E+O0 1.2E+00 1.3E+00 1.4E+00 1.8E+00 2.7E+00 5.4E+00 Nb-94 1.OE+00 i.OE+00 1.OE+00 1.OE+00 i.OE+00 i.OE+00 1.1 E+00 1.1E+00 1.1 E+00 .1 E+00 Tc-99 1.OE+00 1.OE+00 1.OE+00 1.1E+00 1.1 E+00 i.iE+00 1.1 E+OO 1.5E+00 2.3E+00 4.5E+00 Ag-108m i.OE+00 i.OE+00 i.OE+00 1.OE+00 1.OE+00 i.OE+00 1.1 E+00 1.IE+00 1.IE+0O 1.IE+00 Sb-125 i.OE+00 i.OE+00 1.OE+00 1.OE+00 1.OE+00 1.OE+00 1.1 E+0O i.IE+00 1.1E+00 1.IE+00 Cs-134 1.0E+00 i.OE+O0 1.1 E+0O 1.2E+00 1.3E+00 I.4E+00 1.SE+00 1.6E+00 1.7E+00 1.8E+00 Cs-137 i.OE+00 1.1 E+00 1.IE+00 1.2E+00 1.4E+00 1.6E+00 1.7E+00 1.9E+00 2.1 E+O0 2.4E+00 Eu-152 1.OE+00 1.OE+O0 1.OE+00 1.OE+00 1.OE+00 i.OE+00 1.1 E+00 1.iE+O0 1.1 E+00 1.IE+OO Eu-154 1.OE+O0 i.OE+00 1.OE+00 1.OE+00 1.OE+00 1.OE+00 1.1 E+0O 1.1 E+00 1.1E+O0 1.i E+00 Eu-155 1.OE+00 1.OE+00 i.OE+00 i.OE+00 1.OE+00 i.OE+00 1.1 E+0O 1.1 E+0O 1.iE+OO 1. IE+00 Pu-238 1.OE+00 1.OE+00 1.OE+00 I.OE+00 1.OE+00 1.OE+00 1.OE+00 1.4E+00 2.OE+00 4.OE+O0 Pu239 1.OE+0O 1.OE+00 1.OE+00 I.OE+00 1.OE+00 1.OE+00 1.OE+0O 1.4E+00 2.OE+00 4.OE+O0 Pu24 1.OE+00 I.OE+00 I.OE+0O 1.OE+00 1.OE+00 1.OE+00 1.OE+00 1.3E+00 2.OE+00 3.8E+00 Ar241 .OE+ 1.OE+00 1.OE+00 1.OE+00 1.OE+00 1.0E+00 1.OE+00 1.3E+00 2.OE+00 3.8E+00 Cm-243 1.OE+00 1.OE+00 I.OE+00 1.OE+00 1.OE+00 1.OE+00 1.OE+00 1.2E+00 I 1.6E+00 2.3E+00 Area Factors for Varying Contaminated Zone Are (m2)

Nuclide 100 75 SO 25 10 8 6 4 2 1 H-3 2.OE+01 2.6E+01 3.9E+01 7.5E+01 1.8E+02 2.2E+02 2.9E+02 4.2E+02 8.OE+02 1.5E+03 C-14 1.5E+02 2.2E+02 3.7E+02 8.6E+02 2.4E+03 3.1 E+03 4.1 E+03 6.OE+03 1.2E+04 2.4E+04 Fe-55 5.2E+01 7.OE+01 1.OE+02 2.1 E+02 5.2E+02 6.5E+02 8.5E+02 1.3E+03 2.5E+03 4.7E+03 Co-60 1.4E+00 1.4E+00 1.5E+00 1.8E+00 2.4E+00 2.7E+00 3.2E+00 4.1 E+00 6.5E+00 1.1 E+01 NW-63 3.8E+01 5.1 E+01 7.7E+01 1.5E+02 3.8E+02 4.8E+02 6.4E+02 9.5E+02 1.9E+03 3.8E+03 Sr-90 1.4E+01 1.8E+01 2.7E+01 5.4E+01 1.3E+02 1.6E+02 2.2E+02 3.2E+02 6.4E+02 1.3E+03 Nb-94 1.2E+00 1.2E+0o 1.3E+00 1.5E+00 2.OE+00 2.3E+00 2.8E+00 3.5E+00 5.5E+00 9.3E+00 TC-99 1.iE+01 1.5E+01 2.3E+01 4.5E+01 i.IE+02 1.4E+02 1.9E+02 2.8E+02 5.6E+02 1.1E+03 Ag-108m 1.2E+00 1.2E+00 1.3E+00 1.5E+00 2.OE+00 2.3E+00 2.7E+00 3.5E+00 5.5E+00 9.2E+00 Sb-125 1.2E+00 1.2E+00 1.3E+00 1.5E+00 2.OE+00 2.3E+00 2.7E+00 3.5E+00 5.4E+00 9.1 E+O0 Cs-134 2.OE+00 2.1 E+0O 2.3E+00 2.7E+00 3.6E+00 4.OE+00 4.8E+00 6.1 E+00 9.7E+00 1.6E+01 Cs-137 2.8E+00 2.9E+00 3.IE+OO 3.7E+00 4.9E+00 5.6E+00 6.6E+00 8.5E+00 1.3E+01 2.2E+01 Eu-152 1.2E+00 1.2E+00 1.3E+00 1.5E+00 2.1 E+00 2.3E+00 2.8E+00 3.5E+00 5.6E+00 9.4E+00 Eu-154 1.2E+00 1.3E+00 1.3E+00 1.5E+00 2.1 E+00 2.4E+00 2.8E+00 3.6E+00 5.6E+00 9.6E+00 Eu-155 1.2E+00 1.2E+00 1.3E+00 1.5E+00 1.9E+00 2.2E+00 2.6E+00 3.2E+00 5.OE+00 8.OE+00 Pu-238 9.7E+00 1.3E+01 1.9E+01 3.4E+01 7.2E+01 8.4E+01 1.OE+02 1.3E+02 1.8E+02 2.4E+02 Pu239 9.7E+00 1.3E+01 1.9E+01 3.4E+01 7.2E+01 8.4E+01 1.OE+02 1.3E+02 1.8E+02 2.4E+02 Pu241 8.7E+00 1.1 E+01 1.5E+01 2.5E+01 4.5E+Oi 5.2E+01 6.3E+01 8.OE+01 1.2E+02 1.6E+02 Am-241 8.7E+00 1.1E+01 1.5E+01 2.5E+01 4.5E+01 5.2E+01 6.2E+01 7.9E+0I 1.2E+02 1.6E+02 Cm-243 3.3E+00 3.6E+00 4.OE+00 4.9E+00 6.8E+00 7.7E+00 9.1 E+00 1.2E+01 1.8E+01 3.OE+01

Project: Yankee Rowe License Termination Calc. No. YA-CALC-00-006.03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 5 of 35 Ill. References

1. YA-CALC-01-002-03, "Derived Concentration Guideline Levels for Soil at the Yankee Rowe Site,"

January 2004.

2. YA-REPT-00-001-03, "Radionuclide Selection for DCGL Determination," November 2003.

3. NUREG/CR-5512, "Residual Radioactive Contamination From Decommissioning," Volume 1:

"Technical Basis for Translating Contamination Levels to Annual TEDE," October 1992.

4. NUREG-1727. "NMSS Decommissioning Standard Review Plan," September 2000.

5. Yu, C. et al., "Users Manual for RESRAD Version 6," ANUEAD-4, July 2001.

6. NUREG/CR-6692, "Probabilistic Modules for the RESRAD 6.0 and RESRAD-BUILD 3.0 Computer Codes", LePoire, D., et al., US Department of Energy- Argonne National Laboratory, November 2000.

7. NUREG/CR-6676, "Probabilistic Dose Analysis Using Parameter Distributions Developed for RESRAD and RESRAD-BUILD Codes", Kamboj S., et al. US Department of Energy- Argonne National Laboratory, May 2000.

8. NUREG/CR-6697, "Development of Probabilistic RESRAD 6.0 and RESRAD-BUILD 3.0 Computer Codes", Yu, C. et al., US Department of Energy- Argonne National Laboratory, November 2000.

9. NUREG-1757. "Consolidated NMSS Decommissioning Guidance," Volume 2: Characterization, Survey and Determination of Radiological Criteria," September 2003.

10. YA-CALC-01-001-03, "RESRAD 6.21 Sensitivity Analysis for Resident Farmer Scenario - Soil,"

December 2003.

11. YA-REPT-00-002-03, "Hydrogeological Parameter Estimates for Radiation Dose Modeling," May 2003.

12. Yu, C., et al, Argonne National Laboratory, "Data Collection Handbook to Support Modeling Impacts of Radioactive Material in Soil,' April 1993.

13. YA-REPT-00-008-03, 'Evaluation of GeoTesting Express Soil Testing and Determination of Depth to Groundwater," December 2003.

14. NUREG/CR-5512, "Residual Radioactive Contamination From Decommissioning," Volume 2: "User's Manual DandD Version 2.1," April 2001.

15. NUREG/CR-5512, "Residual Radioactive Contamination From Decommissioning," Volume 3:

"Parameter Analysis, Draft Report for Comment," October 1999.

16. Eckerman, KF., et al., "Limiting Values of Radionuclide Intake and Air Concentration and Dose Conversion Factors for Inhalation, Submersion, and Ingestion," EPA-520/1-88-020, Federal Guidance Report No. 11, U.S EPA, 1988.

Project: Yankee Rowe License Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 6 of 35 IV. Assumptions

1. The resident farmer scenario, as described in volume I of NUREG/CR-5512 [3], was assumed as a reasonably conservative scenario for establishing DCGL values for residual radioactivity in soil [1J. The same exposure scenario is assumed for the AF calculations.

In the resident farmer scenario, residual radioactivity is contained in a soil layer on the property that can be used for residential and light farming activities. A residential farming family is postulated to live onsite, raise crops and livestock for consumption and drink water from a ground water source onsite. The dose from residual radioactivity in the soil is evaluated for the average member of the critical group as required by 10CFR Part 20, Subpart E and described in NUREG-1727 [4]. The critical group represents the group reasonably expected to receive the greatest exposure to residual radioactivity.

The potential exposure pathways that define the residential farmer scenario are:

a. Direct exposure to external radiation from radionuclides in the soil

b. Internal dose from inhalation of airborne radionuclides, and

c. Internal dose from ingestion of radionuclides in (1) Crops grown on the property and irrigated with water obtained onsite, (2) Meat and milk obtained from livestock fed fodder and water produced onsite, (3) Drinking water from an onsite well, (4) Fish from an onsite pond and (5) Soil.

2. As the contaminated area decreases, the values for the following 3 ingestion pathway input parameters are assumed to also decrease: the contaminated fractions of plant food (FPLANT), meat (FMEAT), and milk (FMILK) originating from the site.

3. The contaminated fractions for drinking water (FDW), livestock water (FLW), irrigation water (FIRW),

and aquatic food (FR9) are assumed not to decrease as the size of the contaminated zone decreases.

Setting the values for these input parameters equal to 1.0 incorporates the assumption that all water used by the resident farmer comes from the site (i.e., well), regardless of the size of the contaminated area.

4. Another input parameter that is influenced by changes in the size of the contaminated zone is the length parallel to aquifer flow (LCZPAQ). A proportionate reduction in the value for this parameter is assumed as the size of the contaminated zone decreases.

5. The year in which the maximum dose occurs may vary depending on the nuclide. The concentration delivering the maximum dose will be selected for the basis of the AF without regard to year of occurrence.

6. An initial soil concentration of 1 pCi/g is assumed for each nuclide.

V. Method of Calculation

1. As in the calculation of DCGLs [11, the conceptual model underlying the development of AFs for the Yankee site is based on the site characteristics expected at the time of release of the site. The model is comprised of a contaminated zone underlain by an unsaturated zone underlain by a saturated zone. The contaminated zone is assumed to be at the ground surface with no cover material and the ground water is initially uncontaminated. The model as described is consistent with that described by Yu et al. [5].

RESRAD 6.21 enables site modeling through its many input parameters, and includes probabilistic modules [6, 7, and 8] that provide peak-of-the-mean (PoM) doses as discussed in NUREG-1727 [41 and draft NUREG-1757 [9].

Project: Yankee Rowe License Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 7 of 35 The method used in YA-CALC-01-002-03 [1] to calculate the nuclide-specific DCGLs is used here to calculate nuclide-specific AFs. The RESRAD computer code version 6.21 [5, 6] is used to calculate probabilistic (i.e., PoM) doses, which are then used to compute AFs. The PoM doses from YA-CALC 002-03 [1], summarized in Table 2, serve as base case doses in this calculation.

Table 2: Base Case Peak-of-the Mean Doses PoM Dose PoM Dose Nuclide (mrem/y per pCig) Nuclide (mrem/y per pCi/g)

H-3 6.79E-02 Cs-134 5.02E+00 C-14 4.52E+00 Cs-1 37 2.92E+00 Fe-55 8.57E-04 Eu-152 2.43E+00 Co-60 6.21 E+00 Eu-154 2.63E+00 Ni-63 3.07E-02 Eu-1 55 6.29E-02 Sr-90 1.45E+01 Pu-238 7.48E-01 Nb-94 3.46E+00 Pu-239 8.30E-01 Tc-99 1.76E+00 Pu-241 2.54E-02 Ag-108m 3.44E+00 Am-241 8.59E-01 Sb-125 7.82E-01 Cm-243 7.85E-01

2. DCGL values may be scaled up through the use of area factors to obtain a DCGL that represents the same dose from residual radioactivity over a smaller area within a survey unit [4]. The scaled-up value is designated as DCGLEMC, where EMC stands for elevated measurement comparison. The DCGLEMC is computed as the product of the DCGL and the area factor.

DCGLEMC = (DCGL)(AF) (1)

From this relationship it follows that, for a small area of elevated concentration within a survey area, the area factor is the ratio of the nuclide concentration in the smaller area that results in the same dose as the dose from a concentration equal to the DCGL.

AF = (DCGLEMC)/(DCGL) (2)

AF values calculated here are computed directly from the probabilistic doses rather than from DCGL values and therefore a variation of Equation (2) is used. In YA-CALC-002-03 [1], DCGL values were calculated using the relationship:

DCGL (pCilg) = (25 mrem/y)/(PoM dose in mrem/y per pCi/g).

Substitution of terms allows Equation (1) to be re-written as follows:

(2 5/POMEMC) = (25/PoMDcGL)(AF)

Further re-arrangement shows that the AF is the reciprocal of the ratio (or relative fraction) of the PoM dose for the smaller area zone to the base case dose.

(AF) = (POMDCGL/POMEMC)

3. In the RESRAD executions for AFs, input parameter values are the same values as those used to calculate DCGLs, except for the ingestion pathway input parameters discussed below and in Section IV (i.e., the contamination fractions for edible plants, meat, and milk originating from the site). These fractions indicate the portion of a person's total diet that originates in the contaminated zone. As the area decreases, it is reasonable to assume that the fraction of a person's diet from the contaminated zone will decrease in proportion to the size (assumptions 2 and 3 above). The RESRAD contamination fractions are:

Project: Yankee Rowe License Termination CaIc. No. YA-CALC-O0-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 8 of 35

• Fraction of drinking water from site (FDW)

• Fraction of livestock water from site (FLW)

• Fraction of irrigation water from site (FIRW)

• Fraction of aquatic food from site (FR9)

• Fraction of plant food from site (FPLANT)

• Fraction of meat from site (FMEAT)

• Fraction of milk from site (FMILK)

Input values for FDW, FLW, FIRW, and FR9 are held to the same values as those used in the DCGL calculation [1] (see assumption 3 above). Adjustments to the contaminated fractions for FPLANT, FMEAT, and FMILK are made using equations from the RESRAD User Manual [5].

Equation D.5 of the RESRAD User Manual [5] varies the contamination fraction (FA) for plants as follows:

FA = A12000 0:s A s 1000 m2 FA=0.5 A2r1000M 2 In addition, Equation D.5 of the RESRAD User Manual [5] varies the FA value for meat and milk as follows:

FA = A/20000 0 s A5s20000 m2 FA= 1.0 A 200O0m 2 Modified versions of Equation D.5 are used here to vary the input values for FPLANT, FMEAT, and FMILK in order to remain consistent with the approach used for the soil DCGLs [1]. The soil DCGLs were developed using a value of 1.0 for each of the contamination fractions, which incorporated the assumption that 100% of plant food, meat, and milk was obtained from an area equal to 13022 m2 (the size of the contaminated zone at Yankee Rowe [1]). As applied to plants, use of a FA value equal to 1.0 in the calculation of the soil DCGLs effectively multiplied Equation D.5 by a factor of 2 to yield a FA value of 1.0 for areas equal to or greater than 1000 M2. As applicable to meat and milk, Equation D.5 was adjusted for the size of the contaminated zone used in the calculation of the soil DCGLs, (i.e., FA = 1.0 when the contaminated area was 13022 M2 ).

Input values for FPLANT used in this calculation are determined as follows:

FA=A/1000 A<1000 m 2 FA= 1.0 An 1000 M2 where FA = FPLANT Input values for FMEAT and FMILK used in this calculation are determined as follows:

FA = A/13,022 A< 13022 m2 FA= 1 A = 13022 M2 where FA = FMEAT or FMILK Table 3 shows the values for FPLANT, FMEAT, and FMILK as a function of the size of the contaminated zone.

4. As the area of the contaminated zone decreases, the value for another RESRAD input parameter, the length parallel to aquifer flow (LCZPAQ), also decreases (see assumption 4 above). The contaminated zone is assumed to be circular, so the value for LCZPAQ is equal to the diameter of the circle:

LCZPAQ(rn)=2 A )

iT Table 3 also shows the values for LCZPAQ as a function of the size of the contaminated zone.

Project: Yankee Rowe License Termnination Catc. No. YA-CALC40006-03l

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 9 of 35 Table 3: Contaminated Fractions Vs. Size of Contaminated Zone RESRAD Parameter InputValue Contaminated Zone Area (mi) 13022 11500 10000 7500 5000 2500 1000 LCZPAQ(m) 129 121 113 98 80 56 36 FPLANT 1.OE+00 1.OE+00 1.OE+00 1.OE+00 1.OE+00 1.OE+00 1.OE+00 FMEAT 1.OE+00 8.8E-01 7.7E-01 5.8E-01 3.8E-01 1.9E-01 7.7E-02 FMILK 1.OE+00 8.8E-01 7.7E-01 5.8E-01 3.8E-01 1.9E-01 7.7E-02 Contaminated Zone Area (m') 750 500 250 100 75 50 25 LCZPAQ (m) 31 25 18 11 9.8 8.0 5.6 FPLANT 7.5E-01 5.OE-01 2.5E-01 1.OE-01 7.5E-02 5.OE-02 2.5E-02 FMEAT 5.8E-02 3.8E-02 1.9E-02 7.7E-03 5.8E-03 3.8E-03 1.9E-03 FMILK 5.8E-02 3.8E-02 1.9E-02 7.7E-03 5.8E-03 3.8E-03 1.9E-03 Contaminated Zone Area (mi) 10 8 6 4 2 1 LCZPAQ (m) 3.6 3.2 2.8 2.3 1.6 1.1 FPLANT 1.OE-02 8.OE-03 6.OE-03 4.OE-03 2.OE-03 1.OE-03 FMEAT 7.7E-04 6.1E-04 4.6E-04 3.1E-04 1.5E-04 7.7E-05 FMILK 7.7E-04 6.1E-04 4.6E-04 3.1E-04 1.5E-04 7.7E-05

5. The RESRAD 6.21 analyses are executed using 2000 observations and 1 repetition. The Latin Hypercube Sampling (LHS) technique is used to sample the probability distributions for each of the stochastic input parameters. The correlated or non-correlated grouping option is used to preserve the prescribed correlation, and a random seed of 1000 is used to preserve the prescribed sampling technique.

6. RESRAD 6.21 runs are performed for the 20 nuclides that have been identified as nuclides presenting a significant dose impact for license termination at the Yankee Rowe site [2]. They are: H-3, C-14, Fe-55, Co-60, Ni-63, Sr-90, Nb-94, Tc-99, Ag-108m, Sb-125, Cs-134, Cs-137, Eu-152, Eu-154, Eu-155, Pu-238, Pu-239, Pu-241, Am-241, and Cm-243.

VI. Calculations

1. RESRAD input files were created for each nuclide using the values shown in Tables 3 and 7. Table 3 presents the values for the parameters that change with a change in size of the contaminated zone.

Table 7 provides a complete listing of parameter values incorporated into the base cases.

2. Table 4 summarizes the RESRAD results (i.e., PoM doses).

3. Table 5 provides the relative fractions for the PoM doses by nuclide. The fractions given in Table 5 are relative to base case PoM doses. These data are also displayed in Figure 1.

4. The AFs, shown by nuclide in Table 6, are calculated by taking the reciprocal of the relative fractions in Table 5. AF curves are shown by nuclide in Figure 2.

Project: Yankee Rowe License Termination Calc. No. YA-CALC-OO-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 10 of 35 Table 4: RESRAD 6.21 Results - Peak-of-the-Mean Doses Nuclide PoM Dose (mremly) for Contaminated Zone Area (m2) 13022 11500 10000 7500 5000 2500 1000 750 500 250 H-3 6.79E-02 6.35E-02 5.95E-02 5.25E-02 4.52E-02 3.81E-02 3.37E-02 2.53E-02 1.69E-02 8.52E-03 C-14 4.52E+00 4.02E+00 3.55E+00 2.78E+00 2.01 E+00 1.23E+00 7.02E-01 4.66E-01 2.63E-01 1.01 E-01 Fe-55 8.57E-04 7.67E-04 6.84E-04 5.42E-04 3.91 E-04 2.49E-04 1.64E-04 1.23E-04 8.16E-05 4.08E-05 Co-0 6.21 E+0O 6.15E+00 6.1 OE+00 5.97E+00 5.84E+0o 5.66E+00 5.52E+00 5.37E+00 5.21E+00 4.92E+00 Ni-63 3.07E-02 2.78E-02 2.51 E-02 2.04E-02 1.55E-02 1.08E-02 8.04E-03 6.03E-03 4.01 E-03 2.00E-03 Sr-90 1.45E+01 1.40E+01 1.35E+01 1.27E+01 1.19E+01 1.11E+01 1.06E+01 7.99E+00 5.32E+00 2.67E+00 Nb-94 3.46E+00 3.46E+00 3.45E+00 3.43E+00 3.40E+00 3.33E+00 3.27E+00 3.24E+00 3.21 E+00 3.09E+00 Tc-99 1.76E+00 1.74E+00 1.71E+00 1.67E+00 1.63E+00 1.58E+00 1.56E+00 1.17E+00 7.80E-01 3.90E-01 Ag-108m 3.44E+00 3.43E+00 3.43E+00 3.40E+00 3.37E+00 3.30E+00 3.24E+00 3.21 E+00 3.18E+00 3.07E+00 Sb-125 - 7.82E-01 7.81 E-01 7.80E-01 7.75E-01 7.68E-01 7.54E-01 7.41E-01 7.34E-01 7.26E-01 7.02E-01 Cs-134 5.02E+00 4.83E+00 4.65E+00 4.33E+00 3.98E+00 3.63E+00 3.40E+00 3.20E+00 3.00E+00 2.73E+00 Cs-137 2.92E+00 2.76E+00 2.62E+00 2.37E+00 2.11 E+00 1.85E+00 1.68E+00 1.54E+00 1.39E+00 1.21 E+00 Eu-152 2.43E+00 2.43E+00 2.42E+00 2.41 E+O0 2.39E+00 2.35E+00 2.31 E+00 2.28E+00 2.26E+00 2.18E+00 Eu-1 54 2.63E+00 2.63E+00 2.63E+00 2.61 E+00 2.59E+00 2.54E+00 2.50E+00 2.47E+00 2.44E+00 2.35E+00 Eu-1 55 6.29E-02 6.28E-02 6.27E-02 6.22E-02 6.17E-02 6.06E-02 5.96E-02 5.91 E-02 5.85E-02 5.68E-02 Pu-238 7.48E-01 7.46E-01 7.45E-01 7.42E-01 7.40E-01 7.37E-01 7.35E-41 5.52E-01 3.70E-01 1.87E-01 Pu239 8.30E-01 8.29E-01 8.27E-01 8.24E-01 8.21 E-01 8.18E-01 8.16E-01 6.13E-01 4.1OE-01 2.08E-01 Pu241 2.54E-02 2.54E-02 2.54E-02 2.53E-02 2.52E-02 2.51 E-02 2.51 E-02 1.89E-02 1.28E-02 6.64E-03

-241 8.59E-01 8.58E-01 8.57E-01 8.55E-41 8.53E-01 8.5iE41 8.49E-01 6.41 E-01 4.33E-01 2.25E-01 Cm-243 7.85E-01 7.84E-01 7.84E-01 7.81E-41 7.79E-01 7.75E-01 7.72E-41 6.29E-01 4.85E-01 3.37E-01 2

PoM Dose (mremlry) for Contaminated Zone Area (m)

Nuclide 100 75 50 25 10 8 6 4 2 1 H-3 3.46E-03 2.61 E-03 1.76E-03 9.OOE-04 3.77E-04 3.06E-04 2.34E-04 1.61 E-04 8.50E-05 4.57E-05 C-14 2.95E-02 2.03E-02 1.22E-02 5.26E-03 1.86E-03 1.46E-03 1.1 OE-03 7.48E-04 3.77E-04 1.89E-04 Fe-55 1.64E-05 1.23E-05 8.18E-06 4.10E-06 1.66E-06 1.33E-06 1.OOE-06 6.77E-07 3.43E-07 1.81E-07 Co-6O 4.53E+00 4.34E+00 4.11 E+00 3.50E+00 2.61 E+00 2.30E+00 1.94E+00 1.51 E+00 9.54E-01 5.62E-01 Ni-63 8.04E-04 6.03E-04 4.01 E-04 2.00E-04 8.04E-05 6.42E-05 4.82E-05 3.22E-05 1.60E-05 8.07E-06 Sr-90 1.07E+00 8.04E-01 5.37E-01 2.71 E-01 1.1OE-01 8.82E-02 6.65E-02 4.46E-02 2.26E-02 1.14E-02 Nb-94 2.88E+00 2.77E+00 2.64E+00 2.25E+00 1.69E+00 1.49E+00 1.26E+00 9.83E-01 6.25E-01 3.72E-01 Tc-99 1.56E-01 1.17E-01 7.80E-02 3.90E-02 1.56E-02 1.25E-02 9.38E-03 6.26E-03 3.13E-03 1.57E-03 Ag-108m 2.87E+00 2.76E+00 2.62E+00 2.25E+00 1.69E+00 1.49E+00 1.26E+00 9.82E-01 6.25E-01 3.72E-01 Sb-125 6.55E-01 6.30E-01 5.99E-01 5.13E-01 3.88E-01 3.41E-01 2.88E-01 2.25E-01 1.44E-01 8.58E-02 Cs-134 2.46E+00 2.35E+00 2.22E+00 1.88E+00 1.41 E+00 1.24E+00 1.05E+00 8.18E-01 5.20E-01 3.09E-01 Cs-137 1.06E+00 1.OOE+00 9.43E-01 7.96E-01 5.94E-01 5.22E-01 4.41E-01 3.44E-01 2.18E-01 1.30E-01 Eu-152 2.03E+00 1.95E+00 1.85E+00 1.58E+00 1.19E+00 1.04E+00 8.80E-01 6.87E-01 4.36E-01 2.59E-01 Eu-154 2.20E+00 2.11E+00 2.00E+00 1.70E+00 1.27E+00 1.12E+00 9.45E-01 7.37E-01 4.66E-01 2.75E-01 Eu-155 5.34E-02 5.15E-02 4.91E-02 4.25E-02 3.28E-02 2.89E-02 2.46E-02 1.94E-02 1.26E-02 7.83E-03 Pu-238 7.70E-02 5.86E-02 4.02E-02 2.17E-02 1.05E-02 8.91E-03 7.36E-03 5.77E-03 4.10E-03 3.17E-03 Pu239 8.55E-02 6.51E-02 4.47E-02 2.41E-02 1.16E-02 9.87E-03 8.14E-03 6.37E-03 4.51E-03 3.49E-03 Pu241 2.93E-03 2.30E-03 1.66E-03 9.99E-04 5.61E-04 4.85E-04 4.05E-04 3.18E-04 2.19E-04 1.58E-04 Am-241 9.93E-02 7.79E-02 5.65E-02 3.40E-02 1.91E-02 1.65E-02 1.38E-02 1.08E-02 7.44E-03 5.35E-03 Cm-243 2.40E-01 2.19E-01 1.96E-01 1.59E-01 1.16E-01 1.02E-01 8.59E-02 6.73E-02 4.33E-02 2.66E-02

Project: Yankee Rowe License Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 11 of 35 Table 5: Relative Fractions for Peak-of-the-Mean Doses by Nuclide 2

Relative Fraction of PoM Doses by Contaminated Zone Area (m)

Nuclide 13022 11500 10000 7500 5000 2500 1000 750 500 250 H-3 1.OOE+00 9.36E-1 8.76E-01 7.74E-01 6.65E-01 5.61 E-01 4.97E-01 3.73E-01 2.49E-01 1.25E-01 C-14 1.OOE+00 8.90E-01 7.86E-01 6.15E-01 4.44E-01 2.73E-01 1.55E-01 1.03E-01 5.82E-02 2.23E-02 Fe-55 1.OOE+00 8.95E-01 7.98E-01 6.32E-01 4.57E-01 2.90E-01 1.91 E-01 1.44E-01 9.52E-02 4.76E-02 Co-60 1.OOE+00 9.90E-01 9.81E-01 9.62E-01 9.41 E-01 9.11 E-01 8.89E-01 8.65E-01 8.39E-01 7.93E-01 Ni-63 1.OOE+00 9.04E-01 8.16E-01 6.64E-01 5.04E-01 3.52E-01 2.61E-01 1.96E-01 1.30E-01 6.52E-02 Sr-90 1.00E+00 9.65E-01 9.34E-01 8.80E-01 8.22E-01 7.67E-01 7.35E-01 5.52E-01 3.68E-01 1.84E-01 Nb-94 1.OOE+O0 9.99E-01 9.97E-01 9.90E-01 9.82E-01 9.63E-01 9.46E-01 9.37E-01 9.27E-01 8.94E-01 T-99 1.OOE+00 9.85E-01 9.71E-01 9.47E-01 9.22E-01 8.98E-41 8.84E-01 6.64E-01 4.42E-01 2.21 E-01 Ag-108m 1.OOE+00 9.98E-01 9.96E-1 9.89E-01 9.80E-01 9.60E-01 9.43E-01 9.35E-01 9.26E-01 8.93E-01 Sb-125 1.OOE+00 9.99E-01 9.97E-01 9.90E-01 9.82E-01 9.63E-01 9.47E-01 9.38E-01 9.28E-01 8.97E-01 Cs-134 1.OOE+00 9.61E-01 9.25E-01 8.61E-01 7.93E-01 7.22E-01 6.76E-01 6.37E-01 5.97E-01 5.44E-01 Cs-137 1.OOE+00 9.47E-01 8.99E-01 8.14E-01 7.23E-01 6.33E-01 5.77E-01 5.27E-01 4.75E-01 4.15E-01 Eu-1 52 1.OOE+00 9.98E-01 9.97E-01 9.91 E-01 9.84E-01 9.65E-01 9.49E-01 9.40E-01 9.28E-01 8.95E-01 Eu-1 54 1.OOE+OO 9.99E-01 9.98E-41 9.91 E-01 9.83E-01 9.65E-01 9.49E-01 9.40E-01 9.28E-01 8.94E-01 Eu-155 1.OOE+00 9.98E-01 9.97E-01 9.90E-01 9.82E-01 9.64E-01 9.48E-01 9.40E-01 9.31 E-01 9.03E-1 Pu-238 1.OOE+00 9.98E-01 9.96E-01 9.93E-01 9.89E-01 9.85E-01 9.83E-01 7.39E-01 4.94E-01 2.50E-01 Pu239 1.OOE+00 9.98E-01 9.96E-01 9.93E-01 9.89E-01 9.85E-01 9.83E-01 7.39E-01 4.94E-01 2.50E-01 Pu241 1.OOE+00 9.98E-01 9.97E-01 9.94E-01 9.92E-01 9.89E-01 9.86E-01 7.45E-01 5.03E-01 2.61 E-01 Am-241 1.OOE+0O 9.99E-01 9.98E-01 9.95E-01 9.93E-01 9.90E-01 9.88E-01 7.46E-01 5.04E-01 2.62E-01 Cm-243 1.OOE+00 9.98E-01 9.98E-01 9.95E-01 9.92E-01 9.87E-01 9.83E-01 8.O1E-01 6.18E-01 4.30E-01 Relative Fraction of PoM Dose by Contaminated Zon Area (m2)

Nuclide 100 75 50 25 10 8 6 4 2 1 H-3 5.09E-02 3.85E-02 2.59E-02 1.33E-02 5.56E-03 4.50E-03 3.44E-03 2.37E-03 1.25E-03 6.73E-04 C-14 6.54E-03 4.50E-03 2.69E-03 1.16E-03 4.11 E-04 3.23E-04 2.44E-04 1.66E-04 8.35E-05 4.19E-05 Fe-55 1.91 E-02 1.44E-02 9.54E-03 4.78E-03 1.94E-03 1.55E-03 1.17E-03 7.90E-04 4.01 E-04 2.11 E-04 Co-60 7.30E-01 6.99E-01 6.62E-01 5:63E-01 4.20E-01 3.70E-01 3.12E-01 2.43E-01 1.54E-01 9.04E-02 Ni-63 2.61 E-02 1.96E-02 1.30E-02 6.52E-03 2.62E-03 2.09E-03 1.57E-03 1.05E-03 5.21 E-04 2.63E-04 Sr-90 7.39E-02 5.55E-02 3.71 E-02 1.87E-02 7.59E-03 6.09E-03 4.59E-03 3.08E-03 1.56E-03 7.89E-04 Nb-94 8.34E-01 8.01 E-01 7.62E-01 6.51 E-01 4.90E-01 4.31E-01 3.64E-01 2.84E-01 1.81E-01 1.07E-01 Tc-99 8.85E-02 6.64E-02 4.42E-02 2.21 E-02 8.86E-03 7.09E-03 5.32E-03 3.55E-03 1.78E-03 8.89E-04 Ag-108m 8.35E-01 8.02E-01 7.62E-01 6.53E-01 4.92E-01 4.33E-01 3,65E-01 2.86E-01 1.82E-01 1.08E-01 Sb-125 8.37E-01 8.05E-01 7.66E-01 6.56E-01 4.95E-01 4.36E-01 3.68E-01 2.88E-01 1.84E-01 1.1OE-01 Cs-134 4.90E-01 4.67E-01 4.42E-01 3.75E-01 2.81E-01 2.47E-01 2.08E-1 1.63E-01 1.03E-01 6.15E-02 Cs-137 3.62E-01 3.44E-01 3.23E-01 2.73E-01 2.04E-01 1.79E-01 1.51E-1 1.18E-01 7.48E-02 4.45E-02 Eu-152 8.34E-01 8.01E-01 7.61 E-01 6.50E-01 4.88E-01 4.29E-01 3.62E-01 2.83E-01 1.80E-01 1.07E-01 Eu-154 8.34E-01 8.00E-01 7.59E-01 6.47E-01 4.84E-01 4.26E-01 3.59E-01 2.80E-41 1.77E-01 1.04E-01 Eu-155 8.50E-41 8.18E-01 7.81E-01 6.77E-01 5.21E-01 4.60E-01 3.91E-01 3.08E-01 2.01E-01 1.25E-01 Pu-238 1.03E-01 7.84E-02 5.38E-02 2.91 E-02 1.40E-02 1.19E-02 9.84E-03 7.71 E-03 5.48E-03 4.24E-03 Pu239 1.03E-01 7.84E-02 5.38E-02 2.90E-02 1.39E-02 1.19E-02 9.80E-03 7.67E-03 5.44E-03 4.20E-03 Pu241 1.15E-01 9.03E-02 6.54E-02 3.93E-02 2.21E-02 1.91E-02 1.59E-02 1.25E-02 8.62E-03 6.20E-03 AAm-241 1.16E-01 9.07E-2 6.57E42 3.96E-02 2.22E-02 1.92E-02 1 60E-02 1.26E42 8.66E43 6.22E43 Crn-243 3.06E-01 2.79E-01 2.50E41 2.02E-01 1.48E-01 1.30E41 1.09E41 8.58E42 5.52E42 3.39E42

Project: Yankee Rowe License Termination Calc. No. YA-CALC-O006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 12 of 35 Figure 1: Relative Dose vs Contaminated Zone Area 1.OOE+00 1.OOE-01

-Eu154

- =-S Co6O m

-Cs134

-Cs137 i-H3 illN h ' l lll 1 i.OOE-02 E

(44 CI Cm243 0)

Am241 1

=A-05C14 Pu241

-~Pu238

.- Pu239

- Tc99 EuA5 MR:: 1.OOE-03 Ji s3lT1l f ~TI~TfN~k 1.OOE-04 100000 10000 1000 100 Area of Contaminated Zone 2

(m) 10 1 1.OOE-05

Project: Yankee Rowe License Termination Calc. No. YA-CALC-OO-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 13 of 35 Table 6: Area Factors for Contaminated Soil at Yankee Rowe Area Factors for Varying Contaminated Zone Areas (mi)

Nuclide 13022 11600 10000 7500 5000 2500 1000 750 500 250 H-3 1.OOE+00 1.07E+00 1.14E+00 1.29E+00 1.50E+00 1.78E+00 2.01 E+OO 2.68E+00 4.01E+00 7.97E+00 C-14 I.OOE+00 1.12E+0o 1.27E+00 1.63E+oo 2.25E+00 3.67E+00 6.43E+00 9.69E+o0 1.72E+01 4.49E+01 Fe-55 1.00E+00 1.12E+oo 1.25E+00 1.58E+00 2.19E+00 3.45E+00 5.23E+00 6.96E+00 1.05E+01 2.1 0E+01 Co-6O 1.00E+00 1.01 E+00 1.02E+00 1.04E+00 1.06E+00 1.1 OE+O0 1.12E+00 1.16E+00 1.19E+00 1.26E+OO Ni-63 1.OOE+00 1.11 E+00 1.23E+00 1.51E+O0 1.98E+00 2.84E+00 3.83E+00 5.1OE+00 7.68E+00 1.53E+01 Sr-90 1.OOE+00 1.04E+00 1.07E+00 1.14E+00 1.22E+00 1.30E+00 1.36E+o0 1.81E+O0 2.72E+00 5.43E+O0 Nb-94 1.OOE+Oo 1.OOE+oo 1.OOE+oo 1.01 E+0O 1.02E+00 1.04E+00 1.06E+0o 1.07E+00 1.08E+oo 1.12E+O0 Tc-99 1.OOE+00 1.01 E+0O 1.03E+o0 1.06E+0o 1.08E+00 1.11 E+O0 1.13E+00 1.51E+OO 2.26E+00 4.52E+O0 Ag-108m 1.OOE+00 1.OOE+0o 1.OE+00 1.01E+OO 1.02E+00 1.04E+o0 1.06E+0o 1.07E+00 1.08E+00 1.12E+O0 Sb-125 1.OOE+00 1.OOE+Oo 1.00E+00 1.01 E+00 1.02E+oo 1.04E+o0 1.06E+00 1.07E+00 1.08E+00 1.12E+O0 Cs- 34 1.OOE+00 1.04E+00 1.08E+00 1.16E+00 1.26E+00 1.39E+00 1.48E+00 1.57E+00 1.68E+00 1.84E+OO Cs-137 1.OOE+00 1.06E+00 1.11 E+00 1.23E+00 1.38E+00 1.58E+00 1.73E+00 1.90E+00 2.1OE+O0 2.41 E+0O Eu- 52 1.OOE+00 1.OOE+oO 1.OOE+00 1..O1E+00 1.02E+00 1.04E+00 1.05E+0o 1.06E+oo 1.08E+00 1.12E+OO Eu-154 1.OOE+00 1.OOE+00 1.OOE+00 1.OIE+00 1.02E+00 1.04E+oo 1.05E+00 1.06E+o0 1.08E+00 1.12E+OO Eu-155 1.OOE+00 1.OOE+00 1.OOE+00 1.O1E+OO 1.02E+00 1.04E+00 1.05E+00 1.06E+00 1.07E+00 1.11 E+00 Pu-238 I.OOE+00 1.OOE+0o I.OOE+00 1.01E+0 1.01 E+O0 1.01 E+OO 1.02E+00 1.35E+00 2.02E+00 4.00E+0o Pu239 1.OOE+00 1.OOE+00 1.OOE+00 1.01 E+00 1.01 E+00 1.01 E+00 1.02E+00 1.35E+00 2.02E+O0 4.OOE+00 Pu241 1.OOE+0o 1.OOE+00 1.OOE+00 1.01E+00 1.01E+00 1.01 E+OO 1.01 E+00 1.34E+00 1.99E+00 3.83E+O0 Am-241 1.OOE+00 1.OOE+00 I.OOE+00 I.OOE+00 1.01 E+0O 1.01 E+00 1.01 E+00 1.34E+00 I.98E+00 3.82E+00 Cm-243 1.OOE+00 1.OOE+00 1.OOE+00 I .OOE+00 1.01 E+0O 1.01 E+00 1.02E+00 1.25E+00 1.62E+00 2.33E+00 Area Factors for Varying Contaminated Zone Areas (m2)

Nuclide 100 75 50 25 10 8 6 4 2 1 H-3 1.96E+01 2.60E+01 3.86E+01 7.54E+01 1.B0E+02 2.22E+02 2.90E+02 4.22E+02 7.98E+02 1.49E+03 C-14 1.53E+02 2.22E+02 3.71 E+02 8.59E+02 2.43E+03 3.09E+03 4.09E+03 6.04E+03 1.20E+04 2.38E+04 Fe-55 5.22E+01 6.95E+01 1.05E+02 2.09E+02 5.16E+02 6.45E+02 8.55E+02 1.27E+03 2.50E+03 4.74E+03 Co-0 1.37E+00 1.43E+00 1.51E+00 1.78E+00 2.38E+00 2.71 E+00 3.21 E+00 4.12E+00 6.51E+0O 1.11 E+01 Ni-63 3.83E+01 5.1OE+01 7.67E+01 1.53E+02 3.82E+02 4.79E+02 6.38E+02 9.54E+02 1.92E+03 3.81 E+03 Sr-90 1.35E+01 1.80E+01 2.69E+01 5.35E+01 1.32E+02 1.64E+02 2.18E+02 3.24E+02 6.41 E+02 1.27E+03 Nb-94 1.20E+00 1.25E+00 1.31 E+00 1.54E+00 2.04E+00 2.32E+00 2.75E+00 3.52E+00 5.54E+00 9.31 E+00 Tc-99 1.13E+01 1.51 E+01 2.26E+01 4.52E+01 1.13E+02 1.41 E+02 1.88E+02 2.82E+02 5.63E+02 1.13E+03 Ag-108m 1.20E+00 1.25E+00 1.31 E+00 1.53E+00 2.03E+00 2.31 E+00 2.74E+00 3.50E+00 5.50E+00 9.24E+00 Sb-125 1.19E+00 1.24E+00 1.31E+00 1.52E+00 2.02E+00 2.29E+00 2.72E+00 3.47E+00 5.45E+00 9.12E+OO Cs-134 2.04E+00 2.14E+00 2.26E+00 2.67E+00 3.56E+00 4.05E+00 4.8OE+00 6.14E+00 9.67E+00 1.63E+01 Cs-137 2.76E+00 2.91 E+00 3.09E+O0 3.66E+00 4.91 E+O0 5.59E+0O 6.62E+00 8.48E+00 1.34E+01 2.25E+01 Eu-152 1.20E+00 1.25E+00 1.31E+00 1.54E+00 2.05E+00 2.33E+00 2.76E+00 3.54E+O0 5.57E+00 9.39E+00 Eu-154 1.20E+00 1.25E+00 1.32E+00 1.55E+00 2.07E+00 2.35E+00 2.79E+00 3.57E+0O 5.64E+00 9.57E+00 Eu-155 1.18E+00 1.22E+00 1.28E+00 1.48E+O0 1.92E+0O 2.17E+00 2.56E+00 3.25E+O0 4.98E+00 8.03E+00 Pu-238 9.71 E+00 1.28E+01 1.86E+01 3.44E+01 7.15E+O1 8.39E+01 1.02E+02 1.30E+02 1.83E+02 2.36E+02 Pu239 9.71 E+O0 1.28E+01 1.86E+01 3.45E+01 7.18E+O1 8.41E+01 1.02E+02 1.30E+02 1.84E+02 2.38E+02 Pu241 8.69E+00 I.11E+01 1.53E+01 2.54E+01 4.53E+01 5.24E+01 6.28E+01 7.99E+01 1.16E+02 1.61 E+02

-241 8.66E+00 1.10E+01 1.52E+01 2.53E+01 4.50E+01 5.21E+01 6.24E+01 7.94E+01 1.15E+02 1.61E+02 Cm-243 3.27E+00 3.59E+00 4.OOE+00 4.94E+00 6.77E+00 7.71E+00 9.13E+00 1.17E+01 1.61 E+01 2.95E+01

Project: Yankee Rowe License Termination Caic. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 14 of 35 Figure 2A: Area Factor Curves

, i, i , , 1.OOE+05 I I I I I I 4 C14

._ _ _ _ .. I _ . _I I

-U-- Fe55 I '4i63 11111 I I -11111i i ! -

I, I

1.OOE+04 SSr9O

-.- Tc99 ~~ ~

._111_ 111 I -_ I I

-I 6

1.00E+03 0

U.

I10 I .OOE+02 I Al~~~~~~~~~~~~

f~~~~~~~~~

H I I 01~~~~~~~~/

1.OOE+01 1.OOE+00 100000 10000 1000 100 10 1 Area of Contaminated Zone (m2)

Project: Yankee Rowe License Termination Caic. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 15 of 35 Figure 2B: Area Factor Curves 1.OOE+03

-- C23Pu239 Pu238~~~~~~~~~~~~~~~~~u2 Pu241~~~~~~~~~~~~~~~~~~~~~u4 1.OOE+02 Aai241 0

U.

--- O-CO60 AffQ~~~i I 1.OOE+01 1.OOE+00 100000 10000 1000 100 10 1 Area of Contaminated Zone (m2)

Project: Yankee Rowe License Termination Calc. No. YA-CALC-0O-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 16 of 35 Figure 2C: Area Factor Curves 1.OOE+01 I

I I-v- Eu154

+ Eu152 - IIII - I

- Nb94 I II

-*-Ag1O8m M I l4- SbI25

--c- Eu155 wIl I 11 I 0

U.1

- I I I . . . I I I I . I I I I I I I I I I I U-I

- H 1 I 1 I 1 41 I elx e4 I 1.OOE+00 100000 10000 1000 100 10 1 Area of Contaminated Zone (m2)

Project: Yankee Rowe Ucense Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 17 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values ( Input for Base Cases)

Resident Farmer Scenario I1Distribution's Statistical Parametersd Mean Parameter (unit) Typea Priorityb Treatment' Value/Distribution Basis 1 2 3 4 (Median}

Soil Concentrations Basic radiation dose limit (mrem/yr) I 3 D 25 ] 10 CFR 20.1402 I NR NR NR NR Initial principal radionuclide (pCilg) P 2 D 1 Unit Value NR NR NR NR Distribution coefficients (cm3/g) applied to contaminated, unsaturated, and saturated zone, unless otherwise noted Ac-227+D P 1 S Truncated lognormal-n NUREG/CR-6697, Aft. C [8] 6.72 3.22 0.001 0.999 825 Ag-1 08m P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C (8] 5.38 2.1 0.001 0.999 216 Am-241 P 1 S Truncated lognormal-n NUREG/CR-6697, Aft. C [8] - 7.28 3.15 0.001 0.999 applied to saturated &

unsaturated zones 75t percentile value (from D 1.20E+04 RESRAD (.mco) file created in NR NR NR NR 1.45E+03 the sensitivity analysis [10]) -

applied only to contaminated zone in Pu-241 RESRAD run Am-243+D P 1 S Truncated lognormal-n NUREGICR-6697, Aft. C [8] 7.28 3.15 0.001 0.999 1445 C-14 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 2.4 3.22 0.001 0.999 11 Cm-243 P 1 5 Truncated lognormal-n NUREG/CR-6697, AKt. C [8] 8.82 1.82 0.001 0.999 6761 Co-60 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 5.46 2.53 0.001 0.999 235 Cs-1 34 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 6.1 2.33 0.001 0.999 446 Cs-1 37+D P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 6.1 2.33 0.001 0.999 446 Eu-152 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 6.72 3.22 0.001 0.999 825 Eu-i 54 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 6.72 3.22 0.001 0.999 825 Eu-155 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 6.72 3.22 0.001 0.999 825 Fe-55 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 5.34 2.67 0.001 0.999 209 Gd-I 52 P 1 S Truncated lognormal-n NUREGICR-6697, Att. C [8] 6.72 3.22 0.001 0.999 825

Project: Yankee Rowe Ucense Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 18 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Typea PriorityP Treatmentc Value/Distribution Basis 1 2 3 4 {Median}

H-3 P 1 S Truncated lognormal-n NUREG/CR-6697, Att C [8]- -2.81 0.5 0.001 0.999 applied to saturated and unsaturated zones.

D 4.30E-02 25" percentile value (from NR NR NR NR 6.00E-02 RESRAD (.mco) file created in the sensitivity analysis (10]) -

applied to contaminated zone

_______ __________________ ~~~~only_ _ _ _ _ _ _ _ _

Nb-94 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C 18] - 5.94 3.22 0.001 0.999 applied to saturated and unsaturated zones.

D 3.31 E+03 75 percentile value (from NR NR NR NR 3.80E+02 RESRAD (.mco) file created in the sensitivity analysis [10]) -

applied to contaminated zone Ni-63 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 6.05 1.46 0.001 0.999 424 Np-237+D P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 2.84 2.25 0.001 0.999 17 Pa-231 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C (8] 5.94 3.22 0.001 0.999 380 Pb-210+D P 1 S Truncated lognormal-n NUREG/CR-6697, Att C [8] 7.78 2.76 0.001 0.999 2392 Pu-238 P 1 S Truncated lognormal-n NUREG/CR-6697, Att C [8] 6.86 1.89 0.001 0.999 953 Pu-239 P 1 5 Truncated lognormal-n NUREG/CR-6697, Att C [8] 6.86 1.89 0.001 0.999 953 Pu-241+D P 1 S Truncated lognormal-n NUREGICR-6697, Att. C [8] 6.86 1.89 0.001 0.999 953 Ra-226+D P 1 S Truncated lognormal-n NUREG/CR-6697, Att C [8] 8.17 1.7 0.001 0.999 3533 Sb-125 P 1 5 Truncated lognormal-n NUREG/CR-6697, Att. C (8] - 5.94 3.22 0.001 0.999 applied to saturated and unsaturated zones.

D 3.31 E+03 75th percentile value (from NR NR NR NR 3.80E+02 RESRAD (.mco) file created in the sensitivity analysis [10]) -

applied to contaminated zone only Sr-90+D P 1 S Truncated lognommal-n NUREG/CR-6697, At. C [8] 3.45 2.12 0.001 0.999 32

Project: Yankee Rowe License Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 19 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type' PriorityV Treatmente Value/Distribution Basis 1 2 3 4 {Median}

Tc-99 P I S Truncated lognormal-n NUREG/CR-6697, AtL C(81 - -0.67 3.16 0.001 0.999 applied to saturated and unsaturated zones.

D 4.28E+00 75th percentile value (from NR NR NR NR 5.10E-01 RESRAD (.mco) file created in the sensitivity analysis [10])-

applied to contaminated zone only Th-229+D P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 8.68 3.62 0.001 0.999 5884 Th-230 P 1 5 Truncated lognormal-n NUREG/CR-6697, Att. C [8] 8.68 3.62 0.001 0.999 5884 U-233 P 1 5 Truncated lognormal-n NUREG/CR-6697, At. C [8] 4.84 3.13 0.001 0.999 126 U-234 P 1 5 Truncated lognormal-n NUREG/CR-6697, Att. C [8] 4.84 3.13 0.001 0.999 126 U-235+D P 1 5 Truncated lognormal-n NUREG/CR-6697, Att. C [8] 4.84 3.13 0.001 0.999 126 Initial concentration of radionuclides present P 3 D 0 Ground water uncontaminated NR NR NR NR in groundwater (pCi/l)

Calculation Times Time since placement of material (yr) P 3 D 0 NR NR NR NR Time for calculations (yr) P 3 D 0,1, 3,10,30,100, RESRAD Default NR NR NR NR 300, 1000 Contaminated Zone Area of contaminated zone (m2) P 2 D 13022 Site-specific- radiation control NR NR NR NR area [10]

Thickness of contaminated zone (m) P 2 S Uniform Minimum equal depth of soil 0.15 3.8 mixing layer (0.1 5m); maximum equal to depth to water table (3.8m) [13] - applied to all nuclides except C-14 and H-3 D 2.89E+00 76th percentile value (from NR NR NR NR 1.98E+00 RESRAD (.mco) file created in the sensitivity analysis [IOD -

applied to C-14 and H-3 only Length parallel to aquifer flow (m) P 2 D 129 Site-specific - diameter of circle NR NR NR NR with an area of 13022 m [10]

A. J I A I .L I A. &

Project: Yankee Rowe License Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 20 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario I I Distribution's Statistical Parameters' Mean Parameter (unit) Type' Priorityb Treatment' I Value/Distribution Basis 1 l 2 3 4 {Median}

Cover and Contaminated Zone Hydrological Data Cover depth (m) P 2 D 0 Site-specific - no cover assumed NR NR NR NR l Density of contaminated zone (g/cm*3) P 1 S Bounded Normal NUREG 6697 dist for site soil 1.5105 0.159 1.019 2.002 1.5105 type -sand [8, 13]

Contaminated zone erosion rate (m/yr) P 2 D 8.5E-04 Calculated value based on site- NR NR NR NR specific slope of 2.9% [10]

Contaminated zone total porosity P 2 S Bounded Normal NUREG 6697 dist for site soil 0.43 0.06 0.2446 0.6154 0.43 type -sand [8, 13]

Contaminated zone field capacity P 3 D 0.05 Site-specific value calculated NR NR NR NR 0.05 using Equation 4.4 in Ref. 12 [10]

Contaminated zone hydraulic conductivity P 2 S Beta NUREG 6697 dist for site soil 110 5870 1.398 1.842 2506 (m/yr) type -sand [8, 13]

Contaminated zone b parameter P 2 S Bounded NUREG 6697 dist for site soil - 0.0253 0.216 0.501 1.90 0.975

________ Log Normal n type -sand [8, 13]

Humidity In air (g/m-3) P 3 D 6.1 Regional value. [10. 11] NR NR NR NR Evapotranspiration coefficient P 2 S Uniform NUREG/CR-6697, Att C [8] 0.5 0.75 NR NR 0.625 Average annual wind speed (m/sec) P 2 D 2.03 Site-specific value calc. from site NR NR NR NR meteorological data [101 Precipitation (m/yr) P 2 D 1.2 Site-specific value calculated NR NR NR NR from site geographical area ppt.

_ __ _ __ _ __ _ __ _ __ _ __ _ __ _ _ _ _ __ __ ___ _ __ _ _ _ __ _ _ __ _ [~~~10 1 _ _ _ _ _ _ _ _ _

Irrigation (m/yr) B 3 S Uniform NUREG/CR-6697, Aft C 0.252 0.618 NR NR 0.435 methodology [8, 10]

Irrigation mode B 3 D Overhead Site-specific - overhead vs. ditch NR NR NR NR irrigation is standard practice in Eastern U. S.

Runoff coefficient P 2 D 0.6 NUREG/CR-6697, Att. C section NR NR NR NR methodology [8, 10]

____4.2 Watershed area for nearby stream or pond P 3D 7.77E+05 Site-specific- drainage area [10, NR NR NR NR (m"2) 11]

Accuracy for water/soil computations 3 D 1.OOE-03 RESRAD Default I NR NR NR NR I Saturated Zone Hydrological Data Density of saturated zone (g/cm-3) P 1 S Bounded Normal NUREG 6697 distfor site soil 1.5105 l 0.159 1.019 2.002 1.5105 Itype -sand [8,131 ] __P .002

Project: Yankee Rowe License Termination Caic. No. YA-CALC-O0006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 21 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Typea Priorit? Treatmentc Value/Distribution Basis 1 2 3 4 (Median}

Saturated zone total porosity P 1 S Bounded Normal NUREG 6697 dist for site soil 0.43 0.06 0.2446 0.6154 0.43 type -sand [8,13]

Saturated zone effective porosity P 1 S Bounded Normal NUREG 6697 dist for site soil 0.383 0.0610 0.195 0.572 0.383 type -sand 18,13]

Saturated zone field capacity P 3 D 0.05 Calculated site-specific value [4] NR NR NR NR 0.05 using Equation 4.4 from [12]l Saturated zone hydraulic conductivity (m/yr) P 1 S Beta NUREG 6697 dist for site soil 110 5870 1.398 1.842 2506 type -sand [8, 131 Saturated zone hydraulic gradient P 2 D 0.1 Site gradient [10] NR NR NR NR Saturated zone b parameter P 2 S Bounded NUREG 6697 dist for site soil - 0.0253 0.216 0.501 1.90 0.975 Log Normal n type -sand 18, 13]

Water table drop rate (m/yr) P 3 D 11.OOE-03 RESRAD Default NR NR NR NR Well pump intake depth (m below water table) P 2 5 Triangular NUREG/CR-6697, Att. C [8] 6 10 30 14.51 Model: Nondispersion (ND) or Mass-Balance P 3 D ND ND model recommended for 2 NR NR NR NR (MB) contaminant areas > 1,000 m

[121 _

Well pumping rate (m3/yr) P 2 S Uniform Min, Max, median value based 957 1689 1323 on site irrigation and area and calculated according to NUREG/CR-6697, Att. C section 3.10 method. [8, 10]

Unsaturated Zone Hydrological Data Number of unsaturated zone strata P 3 D 1 Site-specific value NR NR NR NR Unsat. zone 1, thickness (m) P 1 5 Uniform Assumes 0.15 to 3.8 m 0.01 3.65 1.82 contaminated zone thickness and 3.8 m depth to water table Unsat. zone 1, soil density (g/cm**3) P 2 5 Bounded Normal NUREG 6697 dist for site soil 1.5105 0.159 1.019 2.002 1.5105 type -sand [8, 13]

Unsat. zone 1, total porosity P 2 5 Bounded Normal NUREG 6697 dist for site soil 0.43 0.06 0.2446 0.6154 0.43

._______ _ __ _ __ _ _ __ _ _ __ _ __ _ _ _ _ __ _ __ _ _ _ _ _ __ y e s n [ , 3]_

-sa nd 18, 13 _ __ _ _ __ _ __ _ __ _ _ __ _ __ __type Unsat. zone 1, effective porosity P 2 S Bounded Normal NUREG 6697 dist for site soil 0.383 0.0610 0.195 0.572 0.383 type -sand [13]

Unsat. zone 1, field capacity P 3 D 0.05 Calculated site-specific value NR NR NR NR 0.05 using Equation 4.4 from [12]

O[10

Project: Yankee Rowe License Termnination Caic. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 22 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type" Priorityb Treatment' Value/Distribution Basis 1 2 3 4 {Median}

Unsat. zone 1,hydraulic conductivity (m/yr) P 2 S Beta NUREG 6697 dist for site soil 110 5870 1.398 1.842 2506 type -sand [8,13]

Unsat. zone 1, soil-specific b parameter P 2 S Bounded NUREG 6697 dist for site soil 0.216 0.501 1.90 0.975 Log Normal n type -sand [8, 13] 0.0253 Occupancy Inhalation rate (m*3/yr) B 3 D 8400 NUREGICR-6697, Att. C [83 NR NR NR NR Mass loading for inhalation (g/m3) P 2 S Continuous linear NUREG/CR-6697, Att. C [8] 2.33E-05 Exposure duration B 3 D 30 RESRAD Default NR NR NR NR Indoor dust filtration factor P 2 S Uniform NUREG/CR-6697, Att. C [8] 0.15 0.95 0.55 Shielding factor, external gamma P 2 S Bounded lognormal-n NUREG/CR-6697, Att C [8] -1.3 0.59 0.044 1 {0.2725)

D 3.98E-01 75th percentile value (from NR NR NR NR 3.12E-01 RESRAD (.mco) file created in the sensitivity analysis [10])

Applied to Ag-1 08m, Cm-243, Co-60, Cs-134, Cs-137, Eu-152, Eu-154, Eu-155, Nb-94, and Sb-125.

Fraction of time spent indoors B 3 D 0.6571 NUREG/CR-5512, Vol. 3 Table NR NR NR NR 6.87 [15] _

Fraction of time spent outdoors (on site) B 3 D 0.1181 NUREGICR-5512, Vol. 3 Table NR NR NR NR 6.87 (outdoors +gardening) [15] __

Shape factor flag, external gamma P 3 D Circular RESRAD Default - Circular NR NR NR NR contaminated zone assumed Ingestion, Dietary Fruits, vegetables, grain consumption (kglyr) B 2 D 112 NUREGICR-5512, Vol. 3 (other NR NR NR NR I__________

I____ I

_________ Ivegetables +fruits +grain) [151 1 1 1 1 Leafy vegetable consumption (kg/yr) B 3 D 21.4 NUREG/CR-5512, Vol. 3(15I NR NR NR NR Milk consumption (L/yr) B 2 D 233 NUREG/CR-5512, Vol. 3 [15] NR NR NR NR Meat and poultry consumption (kg/yr) B 3 D 65.1 NUREGICR5512, Vol. 3 (beef + NR NR NR NR l _______

______ _____ _____ _____ _____ _____ Ipoultry)

______ [151 _ ____ ___

Fish consumption (kg/yr) B 3 D 20.6 NUREGICR-5512, Vol. 3 [15] NR NR NR NR I Other seafood consumption (kg/yr) B 3 D 0.9 RESRAD Default NR HR NR NR I Soil ingestion rate (glyr) B 2 D 18.26 NUREG/CR-5512, Vol. 3(151 l NR l R NR MOR _

Project: Yankee Rowe License Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 23 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type' Priorityb Treatment' Value/Distribution Basis 1 2 3 4 (Median)

Drinking water intake (Uyr) B 2 D 478.5 NUREG/CR-5512, Vol. 3 Table NR NR NR NR

_ _ _ __ __ __ _ __ __ _ 6.8 7 [1 5]_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Contamination fraction of drinking water P 3 D 1 RESRAD Default - all water NR NR NR NR assumed contaminated Contamination fraction of household water (if P 3 NA used)

Contamination fraction of livestock water P 3 D 1 RESRAD Default - all water NR NR NR NR assumed contaminated Contamination fraction of irrigation water P 3 D 1 RESRAD Default - all water NR NR NR NR assumed contaminate .

Contamination fraction of aquatic food P 2 D I NUREG/CR-5512, Vol. 3 [151 NR NR NR NR Contamination fraction of plant food P 3 D I NUREG/CR-5512, Vol. 3 l15] NR NR NR NR Contamination fraction of meat P 3 D 1 NUREG/CR-5512, Vol. 3 l15] NR NR NR NR Contamination fraction of milk P 3 D 1 NUREG/CR-5512, Vol. 3(15] NR NR NR NR Ingestion, Non-Dietary _

Livestock fodder intake for meat (kg/day) M 3 D 27.1 NUREG/CR5512, Vol. 3 Table NR NR NR NR 6.87, beef cattle +poultry +

layer hen l15]

Livestock fodder intake for milk (kg/day) M 3 D 63.2 NUREG/CR5512, Vol. 3 Table NR NR NR NR 6.87, forage + grain + hay 1151 ___ _ _

Livestock water intake for meat (Uday) M 3 D 50.6 NUREG/CR5512, Vol. 3 Table NR NR NR NR 6.87, beef cattle + poultry +

.________________ layer hen [15] __

Livestock water intake for milk (Uday) M 3 D 60 NUREG/CR5512, Vol. 3 Table NR NR NR NR

______ ______ ~~~~~~6.87 1[15]

Livestock soil intake (kg/day) M 3 D 0.5 RESRAD Default NR NR NR NR Mass loading for foliar deposition (g/m**3) P 3 D 4.OOE-04 NUREG/CR-5512, Vol. 3 Table NR NR NR NR 6.87, gardening l151 Depth of soil mixing layer (m) P 2 S Triangular NUREG/CR-6697, Att. C [81 0 0.15 0.6 0.23

Project: Yankee Rowe Ucense Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 24 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario . -

Distribution's Statistical Parametersd Mean Parameter (unit) Typea Priorityb Treatmentc Value/Distribution Basis 1 2 3 4 {Median}

Depth of roots (m) P 1 S uniform Min from NUREG/CR-6697,AUt C 0.3 3.8

[8]. Max Issite specific depth to water table D 1.17E+00 25th percentile value (from NR NR NR NR 2.05E+00 RESRAD (.mco) file created in the sensitivity analysis [10])

Applied to Am-241, C-14, Cm-243, Cs-134, Cs137, H-3, Ni-63, Pu-238, Pu239, Pu-241, Sr-90,

_______________________________________ _______________and Tc-99_____ _________

Drinking water fraction from ground water P 3 D I RESRAD Default - all water NR NR NR NR assumed to be supplied from groundwater Household water fraction from ground water P 3 NA (if used)

Livestock water fraction from ground water P 3 D 1 RESRAD Default - all water NR NR NR NR assumed to be supplied from groundwater Irrigation fraction from ground water P 3 D 1 RESRAD Default - all water NR NR NR NR assumed to be supplied from groundwater Wet weight crop yield for Non-Leafy (kg/m-2) P 2 S Truncated lognonmal-n NUREG/CR-6697, Att. C [8] 0.56 0.48 0.001 0.999 1.75 Wet weight crop yield for Leafy (kg/m2) P 3 D 2.88921 NUREG/CR-5512, Vol. 3 Table NR NR NR NR

__ __ _ __ __ _ __ __ _ _ __ _ __ _ _ _ _ _ _ _ __ _ __ _ _ _ _ _ _ _ __ _ _ _ _ _ __ _ _ _ 6 .87 [151 _ _ _ _ _ _ 1__

Wet weight crop yield for Fodder (kg/m2) P 3 D 1.8868 NUREG/CR-5512, Vol. 3 Table NR NR NR NR

__ __ _ __ __ __ __ _ __ __ __ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ __ _ _ _ ~~6

.87 [151 _ _ _ _ _ _ _ _

Growing Season for Non-Leafy (years) P 3 D 0.246 NUREGiCR-5512, Vol. 3 Table NR NR NR NR 6.87 (15]

Growing Season for Leafy (years) P 3 D 0.123 NUREG/CR-5512, Vol. 3 Table NR NR NR NR

_ _ _ _ __ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ 6.87 1[15] _ _ _ _ _ _

Growing Season for Fodder (years) P 3 D 0.082 NUREG/CR-5512, Vol. 3 Table NR NR NR NR

______ ________ ~~ ~~~6.87 1151 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Translocation Factor for Non-Leafy P 3 D 0.1 NUREG/CR-5512, Vol. 3 Table NR NR NR NR 6.87 [15]

Translocation Factor for Leafy P 3 D I NUREG/CR-5512, Vol. 3 Table NR NR NR NR 6.87 [15]

Translocation Factor for Fodder P 3 D I NUREG/CR-5512, Vol. 3 Table NR NR NR

_____________________________I__

__ _ _ _ _ __ _ _6.87 [151

Project: Yankee Rowe Ucense Termination Calc. No. YA-CALC4O-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 25 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type' Priorityb Treatmentc Value/Distribution Basis 1 2 3 4 (Median}

Weathering Removal Constant for Vegetation P 2 S Triangular NUREG/CR-6697, Alt. C [81 5.1 18 84 33 (1/yr)__ _ _

Wet Foliar Interception Fraction for Non-Leafy P 3 D 0.35 NUREG.CR-5512, Vol. 3 Table NR NR NR NR

______ ________________ 8~~~.87

[151 _ _ _ _ _ _

Wet Foliar Interception Fraction for Leafy P 2 S Triangular NUREG/CR-6697, Att. C (8] 0.06 0.67 0.95 0.58 Wet Foliar Interception Fraction for Fodder P 3 D 0.35 NUREG/CR-5512, Vol. 3 Table NR NR NR NR Dry_ Foliar__________ _56.87 IeeiFdnroLf3 [15] NR NR NR NR Dry Foliar Interception Fraction for Non-Leafy P 3 D 0.35 NUREG/CR-5512, Vol. 3 Table NR NR NR NR

_ _ __ __ _ _ _ _ _ _ _ _ 6.8 7 [I 15]_ _ _ _ _ _ __ _ _ _

Dry Foliar Interception Fraction for Leafy P 3 D 0.35 NUREG/CR-5512, Vol. 3 Table NR NR NR NR

_ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ __ _ 6.87 [151]_ _ _ _ _ _

Dry Foliar Interception Fraction for Fodder P 3 D 0.35 NUREG/CR-5512, Vol. 3 Table NR NR NR NR

__ __ __ _ _ _ _ _ _ __ __ __ __ __ _ __ __ __ _ _ _ _ _ _ _ _ __ _ _ _ _ _ __ _ _ _ _ _ __ _ 6.8 7 [1 5]_ _ _ _ _ _ _ _ _ _ _

Storage times of contaminated foodstuffs (days): _

Fruits, non-leafy vegetables, and grain B 3 D 14 NUREG/CR-5512, Vol. 3 Table NR NR NR NR 6.87 [151 ' _

Leafy vegetables B 3 D I NUREG/CR-5512, Vol. 3 Table NR NR NR NR 6.87 [15] '

Milk B 3 D I NUREG/CR-5512, Vol. 3 Table NR NR NR NR

_ __ ___ __ _ __ _ __ __ _ __ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ __ _ 6 .87 [151 _ _ _ _ _ _

Meat and poultry B 3 D 20 NUREG/CR-5512, Vol. 3 Table NR NR NR NR 6.87 (holdup period for beef) [15] __

Fish B 3 D 7 RESRAD Default NR NR NR NR . -

Crustacea and mollusks B 3 D 7 RESRAD Default NR NR NR NR Well water B 3 D 1 RESRAD Default NR NR NR NR Surface water B 3 D 1 RESRAD Default NR NR NR NR Livestock fodder B 3 D 45 RESRAD Default NR NR NR NR Special Radionuclides (C-14)

C-1 2 concentration in water (g/cm3) P 3 D 2.OOE-05 RESRAD Default NR NR l NR NR C-12 concentration in contaminated soil P 3 D 3.OOE-02 RESRAD Default NR NR l NR NR Fraction of vegetation carbon from soil P 3 D 2.OOE-02 lRESRAD Default NR NR l NR NR Fraction of vegetation carbon from air P 3 D 9.80E-01 lRESRAD Default NR NR NR NR

Project: Yankee Rowe License Termination Calc. No. YA-CALC-O-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 26 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type' Priorityb Treatment 0 ValuelDistribution Basis 1 2 3 4 {Median}

C-14 evasion layer thickness in soil (m) P 2 D 4.27E-01 75th percentile value (from NR NR NR NR {3.OOE-01}

RESRAD (.mco) file created in SA [101) Applied only to C-14 C-14 evasion flux rate from soil (1/sec) P 3 D 7.00E-07 RESRAD Default NR NR NR NR C-12 evasion flux rate from soil (1/sec) P 3 D 1.00E-10 RESRAD Default NR NR NR NR Fraction of grain in beef cattle feed B 3 D 0.2500 NUREGICR-6697, Att. B (8] NR NR NR NR Fraction of grain in milk cow feed B 3 D 0.1000 NUREG/CR-6697, Aet. B [8] NR NR NR NR Inhalation Exposure Dose Conversion Factors (mremlpCi)

Ac-227+D M 3 D 6.72E+00 RESRAD library: Dose NR NR NR NR Conversion Factors from [161 Ag-1 08m M 3 D 2.83E-04 [16] NR NR NR NR Am-241 M 3 D 4.44E-01 [16] NR NR NR NR Am-243+D M 3 D 4.40E-01 (16] NR NR NR NR C-14 M 3 D 2.09E-06 (16] NR NR NR NR Cm-243 M 3 D 3.07E-01 116] NR NR NR NR Co-60 M 3 D 2.19E-04 116] NR NR NR NR Cs-134 M 3 D 4.63E-05 [16] NR NR NR NR Cs-1 37+D M 3 D 3.1 9E-05 [16] NR NR NR NR Eu-i52 M 3 D 2.212E-04 [161 NR NR NR NIR Eu-154 M 3 D 2.862E-04 [16] NR NR NR NR Eu-155 M 3 D 4.84E-05 [16] NR NR NR NR Fe-55 M 3 D 2.69E-06 [16] NR NR NR NR Gd-152 M 3 D 2.43E-01 (16] NR NR NR NR H-3 M 3 D 6.40E-08 (16] NR NR NR NR Nb-94 M 3 D 4.14E-04 [161 NR NR NR NR Ni-63 M 3 D 6.29E-06 [16] NR NR NR NR Np-237+D M 3 D 5.40E-01 [I6] NR NR NR NR Pa-231 M 3 D 1.28E+00 (16] NR NR NR NR Pb-210+D M 3 D 1.38E-02 [16] NR NR NR NR Pu-238 M 3 D 3.92E-01 [16] NR NR NR NR Pu-239 M 3 D 4.29E-01 (16] NR NR NR NR

Project: Yankee Rowe Ucense Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 27 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values ( Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type' Priorityb Treatment' Value/Distribution Basis 1 2 3 4 {Median}

Pu-241+D M 3 D 8.25E-03 [16] NR NR NR NR Ra-226+D M 3 D 8.60E-03 [16] NR NR NR NR Sb-125 M 3 D 1.22E-05 [16] NR NR NR - NR Sr-90+D M 3 D 1.31 E-03 [16] NR NR NR NR Tc-99 M 3 D 8.33E-06 [16] NR NR NR NR Th-229+D M 3 D 2.16E+00 (16] NR NR NR NR Th-230 M 3 D 3.26E-01 [16] NR NR NR NR U-233 M 3 D 1.35E-01 [16] NR NR NR NR U-234 M 3 D 1.32E-41 [16] HR NR NR NR U-235+D1 M 3 D 1.23E-01 [16] NR NR NR NR _

Ingestion Exposure Dose Conversion Factors (mrem/pCi)

Ac-227+D M 3 D 1.48E-02 RESRAD library: Dose NR NR NR NR

________________ Conversion Factors from [16]

Ag-108m M 3 D 7.62E-06 [16] NR NR NR NR Am-241 M 3 D 3.64E-03 [16] NR NR NR NR Am-243+D M 3 D 3.63E-03 [16] NR NR NR NR C-14 M 3 D 2.09E-06 [16] NR NR NR NR Cm-243 M 3 D 2.51 E-03 [16] NR NR NR NR Co-60 M 3 D 2.69E-05 (16] NR NR NR NR Cs-134 M 3 D 7.33E-05 [16] NR NR NR NR Cs-137+D M 3 D 5.00E-05 (16] NR NR NR NR Eu-152 M 3 D 6.48E-06 [16] NR NR NR NR Eu-154 M 3 D 9.55E-06 [16] NR NR NR NR Eu-155 M 3 D 1.53E-06 [16] NR NR NR NR Fe-55 M 3 D 6.07E-07 [16] NR NR NR NR Gd-152 M 3 D 1.61E-04 [16] NR NR NR NR H-3 M 3 D 6.40E-08 [16] NR NR NR NR Nb-94 M 3 D 7.14E-06 [16] NR NR NR NR Ni-63 M 3 D 5.77E-07 [16] HR NR NR NR Np-237+D M 3 D 4.44E-03 [16] HR NR NR HR

Project: Yankee Rowe Ucense Tennination CaIc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 28 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type' PriorityW Treatmente Value/Distribution Basis 1 2 3 4 {Median}

Pa-231 M 3 D 1.06E-02 [161 NR NR NR NR Pb-210+D M 3 D 5.37E-03 [16] NR NR NR NR Pu-238 M 3 D 3.20E-03 [16] NR NR HNR NR Pu-239 M 3 D 3.54E-03 [16] NR NR NR NR Pu-241+D M 3 D 6.85E-05 [16] NR NR NR NR Ra-226+D M 3 D 1.33E-03 [16] NR NR NR NR Sb-125 M 3 D 2.81E-06 [16] NR NR NR NR Sr-90+D M 3 D 1.53E-04 (16] NR NR NR NR Tc-99 M 3 D 1.46E-06 [16] NR NR NR NR Th-229+D M 3 D 4.03E-03 [16] NR NR NR NR Th-230 M 3 D 5.48E-04 [16] NR NR NR NR U-233 M 3 D 2.89E-04 [16] NR NR NR NR U-234 M 3 D 2.83E-04 [16] NR NR NR NR U-235+D M 3 D 2.67E-04 [16] NR NR NR NR Plant Transfer Factors (pCUlg plant per pCi/g soil) .

Ac-227+D p 1 S Truncated lognormal-n NUREG/CR-6697, Att. C (8] -6.91 1.1 0.001 0.999 l{1.02-03)

Ag-108m P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -5.52 0.9 0.001 0.999 l4.OE-03}

Am-241 p D 1 1.83E-03 75e percentile value (from NR NR NR NR 1.48E-03 RESRAD (.mco) file created in the sensitivity analysis [10])

Applied also in the Pu-241 RESRAD run Am-243+D P I S Truncated lognornal-n NUREG/CR-6697, Att. C [8] -8.91 0.9 0.001 0.999 {1.0E-03}

C-14 P 1 S Truncated lognornal-n NUREG/CR-6697, At. C [8] -0.36 0.9 0.001 0.999 {7.OE-01}

Cm-243 P 1 D 1.83E-03 75"h percentile value (from NR NR NR NR 1.48E-03 RESRAD (.mco) file created in

_____________________________________ _______ __________________ the sensitivity analysis [101)

Co-60 P 1 D 1.46E-01 75 percentile value (from NR NR NR NR 1.18E-01 RESRAD (.mco) file created In the sensitivitY analysis [10D Cs-1 34 P 1 D 7.82E-02 75"h percentile value (from NR NR NR NR 6.48E-02 RESRAD (.mco) file created in the sensitivity analysis [10])

Project: Yankee Rowe Ucense Termination Calc. No. YA-CALC-OO-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 29 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type" Priorityb Treatment' Value/Distribution Basis 1 2 3 4 (Median)

Cs-1 37+D P 1 D 7.82E-02 75uh percentile value (from NR NR NR NR 6.48E-02 RESRAD (.mco) file created in the sensitivity analysis [10]) .

Eu-152 P 1 S Truncated lognommal-n NUREG/CR-6697, Att. C[8] -6.21 1.1 0.001 0.999 {2.OE-03}

Eu-154 P 1 S Truncated lognormal-n NUREG/CR-6697, At. C18] -6.21 1.1 0.001 0.999 {2.OE-03}

Eu-155 P 1 D 4.21 E-03 75 h percentile value (from NR NR NR NR 3.60E-3 RESRAD (.mco) file created in the sensitivity analysis [10])

Fe-55 P 1 D 1.83E-03 75 hpercentile value (from NR NR NR NR 1.48E-03 RESRAD (.mco) file created in the sensitivity analysis [10])

Gd-152 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C[8] -6.21 1.1 0.001 0.999 (2.02-03}

H-3 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] 1.57 1.1 0.001 0.999 (4.8E+00}

Nb-94 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -4.61 1.1 0.001 0.999 (1.OE-02}

Ni-63 P 1 D 9.1 E-02 75" percentile value (from NR NR NR NR 7.37E-02 RESRAD (.mco) file created in the sensitivity analysis [101)

Np-237+D P 1 S Truncated lognommal-n NUREG/CR-6697, Att. C [8] -3.91 0.9 0.001 0.999 {2.OE-02}

Pa-231 P 1 S Truncated lognormal-n NUREG/CR-6697, AUt. C[8] -4.61 1.1 0.001 0.999 (1.0E402}

Pb-210+D P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [81 -5.52 0.9 0.001 0.999 {4.OE-03}

Pu-238 P 1 D 1.83E-03 75th percentile value (from NR NR NR NR 11.482-03 RESRAD (.mco) file created in the sensitivity analysis [10])

Pu-239 P 1 D 1.83E-03 75th percentile value (from NR NR NR NR 1.48E-03 RESRAD (.mco) file created in

.____ _____ __ _____ __ _____ _ sensitivity

_the analysis [10])

Pu-241+D P 1 S Truncated lognormal-n NUREG/CR-6697, AUt. C[8] -6.91 0.9 0.001 0.999 {1.0E-03)

Ra-226+D P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C[8] -3.22 0.9 0.001 0.999 (4.0E-02)

Sb-1125 P 1 S Truncated lognommal-n NUREG/CR-6697, Att. C [8] -4.61 1.0 0.001 0.999 (1.0E-02)

Sr-90+D P 1 D 5.90E-01 75h' percentile value (from NR NR NR NR 4.88E-01 RESRAD (.mco) file created in the sensitivity analysis [10])

Tc-99 P 1 D 9.16E+00 7 5 h percentile value (from NR NR NR NR 7.41E+00 RESRAD (.mco) file created in

-the sensitivity analysis [10]) _-_I

Project: Yankee Rowe License Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 30 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type' Priorityb Treatmentc Value/Distribution Basis 1 2 3 4 {Median}

Th-229+D P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -6.91 0.9 0.001 0.999 (1.01E-03}

Th-230 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [81 -6.91 0.9 0.001 0.999 {1.OE-03}

U-233 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -6.21 0.9 0.001 0.999 {2.OE-03)

U-234 P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -6.21 0.9 l 0.001 l 0.999 {2.OE-03}

U-235+D P 1 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -6.21 0.9 0.001 l 0.999 (2.OE-03}

Meat Transfer Factors (pCi/kg per pCWd)

Ac-227+Dl P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -10.82 1.0 0.001 0.999 {2.OE-05)

Ag-108m P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -6.21 0.7 0.001 0.999 {2.OE-03}

Am-241 P 2 S Truncated lognormal-n NUREG/CR-6697, AU. C [8] -9.90 0.2 0.001 0.999 {5.OE-05}

Am-243+D P 2 S Truncated lognormal-n NUREG/CR-6697, AU. C [8] -9.90 0.2 0.001 0.999 {5.OE-05}

C-14 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -3.47 1.0 0.001 0.999 {3.1 E-02}

Cm-243 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -10.82 1.0 0.001 0.999 {2.OE-05}

Co-60 P 2 D 5.86E-02 75e percentile value (from NR NR NR NR 4.85E-02 RESRAD (.mco) file created in the sensitivity analysis [101)

Cs-134 P 2 0 6.51 E-02 75 percentile value (from NR NR NR NR 5.38E-02 RESRAD (.mco) file created in the sensitivity analysis [10])

Cs-1 37+D P 2 D 6.51 E-02 75 percentile value (from NR NR NR NR 5.38E-02 RESRAD (.mco) file created in the sensitivity analysis [10])

Eu-152 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -6.21 1.0 0.001- 0.999 (2.OE-03}

Eu-1 54 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -6.21 1.0 0.001 0.999 {2.OE-03}

Eu-1 55 P 2 S Truncated lognommal-n NUREG/CR-6697, AU. C [8] -6.21 1.0 0.001 0.999 {2.OE-03}

Fe-55 P 2 D 3.91 E-02 75e percentile value (from NR NR NR NR 3.23E-02 RESRAD (.mco) file created in the sensitivity analysis [101)

Gd-152 P 2 S Truncated lognormal-n NUREG/CR-6697, AU. C [8] -6.21 1.0 0.001 0.999 {2.OE-03}

H-3 P 2 S Truncated lognormal-n NUREG/CR-6697, At. C [8] -4.42 1.0 0.001 0.999 {1.2E-02}

Nb-94 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -13.82 0.9 0.001 0.999 {1.OE-06}

Ni-63 P 2 5 Truncated lognormal-n NUREG/CR-6697, Att. C [8] -5.30 0.9 0.001 0.999 (5.OE-03}

Np-237+D P 2 S5 Truncated lognorma-n NUREG/CR-6697, At. C [8] -6.91 0.7 0.001 0.999 (1.OE-03}

Project: Yankee Rowe Ucense Termination Calc. No. YA-CALC-OD-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 31 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Typea Priorityb Treatmentc Value/Distribution Basis 1 2 3 4 {Median}

Pa-231 P 2 S Truncated lognormal-n NUREG/CR-6697, Att C [8] -12.21 1.0 0.001 0.999 {5.OE-06}

Pb-210+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -7.13 0.7 0.001 0.999 {8.0E-04}

Pu-238 P 2 S Truncated lognormal-n NUREGICR-6697, Aft. C [8] -9.21 0.2 0.001 0.999 {1.OE-04}

Pu-239 P 2 S Truncated lognormal-n NUREGICR-6697, Alt. C (8] -9.21 0.2 10.001 0.999 {1 .OE-04}

Pu-241+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att. 08 C -9.21 0.2 0.001 0.999 {1.0E-04)

Ra-226+D P 2 S Truncated lognormal-n NUREG/CR-6697, Aft. C [8] -6.91 0.7 0.001 0.999 {1.OE-03}

Sb-I625 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. 081 C -6.91 0.9 0.001 0.999 {1.OE-03)

Sr-90+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -4.61 0.4 0.001 0.999 {1.OE-02}

TS-99 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C 18] -9.21 0.7 0.001 0.999 {1.OE-04}

Th-229+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att C(8] -9.21 1.0 0.001 0.999 {1.OE-04}

Th-230 P 2 S Truncated lognommal-n NUREG/CR-6697, Att. C 8] -9.21 1.0 0.001 0.999 {1.0E-04}

U-233 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -7.13 0.7 0.001 0.999 {1.OE-04}

U-234 P 2 S Truncated lognormal-n NUREG/CR-6697, Aft. C 18] -7.13 0.7 0.001 0.999 (8.OE-04}

U-235+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -7.13 0.7 0.001 0.999 {8.OE-04}

U-235+D P___2___S Milk Transfer Factors (pmlL per pC A.d) _ _______E Ac-227+D P 2 S Truncated lognormal-i NUREGICR-6697, p2.OE-06} AUM. C [8] -13.12 0.9 0.001 0.999 Ag-708m P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -5.12 0.7 0.001 0.999 (6.OE-03}

Am-241 P 2 S Truncated lognormal-nl NUREGICR-6697, Att. C [8] l -13.12 0.7 0.001 0.999 {2.OE-06}

Am-243+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -13.12 0.7 0.001 0.999 {2.OE-06}

A-14 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -4.4 1 0.9 0.001 0.999 {1.2E-02}

Cm-243 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -13.12 0.9 0.001 0.999 {2.OE-06}

Co-60 P 2 S Truncated lognormal-n NUREG/CR-6697, At. C [8] -6.21 0.7 0.001 0.999 {2.OE-03}

Cs-134 P 2 D 1.39E-02 75h percentile value (from NR NR NR NR 1.12E-02 RESRAD (.mco) file created in the sensitivity analysis [101)

Cs-137+D P 2 D 1.39E-02 75m percentile value (from NR NR NR NR 1.12E-02 RESRAD (.mco) file created in

_______ _______ _________ the sensitivity analysis [101)

Eu-152 P 2 5 Truncated lognormal-ni NUREGICR-6697, Alt. 0(8] -9.72 0.9 0.001 0.999 {6.OE-05}

Eu-154 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C(8] -9.72 0.9 0.001 0.999 {6.OE-05}

Eu-154 P 2 S Truncated lognommal-n NUREG/CR-6697 Alt. C(8l -9.72 0.9 0.001 0.999 {6.0E45}

UP 2 US Truncated lognormal-n INUREGICR-6697, Att. C [8] -9.72 0.9 0.001 0.999 WO.E-05}

_Eu-1 55

Project: Yankee Rowe Ucense Termination Calc. No. YA-CALC-OO-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 32 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type' Priorityb Treatmentc Value/Distribution Basis 1 2 3 4 {Median}

Fe-55 P 2 S Truncated lognormal-n NUREGICR-6697, Att. C [8] -8.11 0.7 0.001 0.999 l3.OE-04)

Gd-152 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C[8l -9.72 0.9 0.001 0.999 {6.OE-05}

H-3 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -4.6 0.9 0.001 0.999 {1 .02-02)

Nb-94 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C (8] -13.12 0.7 0.001 0.999 {2.OE-06)

Ni-63 P 2 D 3.21 E-02 W percentile value (from 75 NR NR NR NR 2.54E-02 RESRAD (.mco) file created in the sensitivity analysis 1101) .

Np-237+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -11.51 0.7 0.001 0.999 (1.0E-05)

Pa-231 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -12.21 0.9 0.001 0.999 {5.OE-06)

Pb-210+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -8.11 0.9 0.001 0.999 (3.02-04)

Pu-238 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -13.82 0.5 0.001 0.999 {1.OE-06}

Pu-239 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -13.82 0.5 0.001 0.999 (1.0E-06)

Pu-241+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -13.82 0.5 0.001 0.999 (1.0E-06}

Ra-226+D P 2 5 Truncated lognormal-n NUREG/CR-6697, Alt C [8] -6.91 0.5 0.001 0.999 (1.0E-03)

Sb-125 P 2 $ Truncated lognormal-n NUREG/CR-6697, ALt. C [8] -9.72 0.9 0.001 0.999 {6,OE-05}

Sr-90+D P 2 S Truncated lognormal-n NUREG/CR-6697, AUt. C [8] -6.21 0.5 0.001 0.999 (2.0E-03)

Tc-99 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -6.91 0.7 0.001 0.999 {1.OE-03)

Th-229+D P 2 S Truncated lognormal-n NUREGICR-6697, Att. C (8] -12.21 0.9 0.001 0.999 {5.OE-06)

Th-230 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -12.21 0.9 0.001 0.999 {5.OE-06}

U-233 P 2 S Truncated lognormal-n NUREG/CR-6697, AUt. C [8] -7.82 0.6 0.001 0.999 (4.0E-04)

U-234 P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -7.82 0.6 0.001 0.999 (4.02-04)

U-235+D P 2 S Truncated lognormal-n NUREG/CR-6697, Att. C [8] -7.82 0.6 0.001 0.999 *4.OE-04}

Bioaccumulation Factors for Fish (pCi/kg per pCi/L) . -

Ac-227+D P 2 S Lognormal-n NUREG/CR-6697, AtL. C [8] 2.7 1.1 1.5E+01 Ag-108m P 2 5 Lognormal-n NUREG/CR-6697, AU. C [8] 1.6 1.1 5.0E+00 Am-241 P 2 S Lognormal-n NUREG/CR-6697, AUt. C [8] 3.4 1.1 3.0E+01 Amn-243+D P 2 S Lognormal-n NUREG/CR-6697, AUt C [8] 3.4 1.1 3.0E+01 C-14 P 2 5 Lognormal-n NUREG/CR-6697, All. C [8] 10.8 1.1 4.9E+04 Cm-243 P 2 S Lognormal-n NUREG/CR-6697, AUt. C [8] 3.4 1.1 3.OE+01 Co-60 P 2 S Lognormal-n NUREG/CR-6697, Alt C [8] 5.7 1.1 3.0E+02

lProject: Yankee Rowe License Termination Calc. No. YA-CALC-00-006-03 l

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 33 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Type' Priorityb Treatmentc Value/Distribution Basis 2 3 4 {Median}

Cs-1 34 P 2 S Lognormal-n NUREG/CR-6697, Att. C [8] 7.6 0.7 2.OE+03 Cs-137+D P 2 S Lognormal-n NUREG/CR-6697, Att. C [8] 7.6 0.7 _ 2.OE+03 Eu-152 P 2 S Lognormal-n NUREG/CR-6697, Att. C [8] 3.9 1.1 4.9E+01 Eu-i 54 P 2 S Lognormal-n NUREGICR-6697, Att. C [8] 3.9 1.1 4.9E+01 Eu-155 P 2 S Lognormal-n NUREG/CR-6697, Att. C (8] 3.9 11. 4.9E+01 Fe-55 P 2 S Lognormal-n NUREG/CR-6697, Aft. C [8] 5.3 1.1 2.0E+02 Gd-1 52 P 2 S Lognormal-n NUREG/CR-6697, Aft. C [8] 3.2 1.1 2.5E+01 H-3 P 2 S Lognormal-n NUREG/CR-6697, Att. C18] 0 0.1 1.OE+00 Nb-94 P 2 S Lognormal-n NUREG/CR-6697, Aft. C [8] 5.7 1.1 3.OE+02 Ni-63 P 2 S Lognormal-n NUREGICR-6697, Att. C [8] 4.6 1.1 9.9E+01 Np-237+D P 2 S Lognormal-n NUREGICR-6697, At. C (8] 3.4 1.1 3.OE+01 Pa-231 P 2 S Lognormal-n NUREGICR-6697, Aft. C [8] 23 1.1 3.OE+01 Pb-210+D P 2 S Lognormal-n NUREG/CR-6697, Att. C [8] 5.7 1.1 3.OE+02 Pu-238 P 2 S Lognormal-n NUREG/CR-6697, Att. C [8] 3.4 1.1 3.0E+02 Pu-239 P 2 S Lognormal-n NUREG/CR-6697, Att. C(8] 3.4 1.1 I 3.OE+01 Pu-241+3 P 2 S Lognormal-n NUREG/CR-6697, Att. C(8] 3.4 1.1 3.OE+01 Ra-226+D P 2 S Lognormal-n NUREG/CR-6697, AUt. C [8] 3.9 1.1 4.9E+01 Sb-125 P 2 S Lognormal-n NUREG/CR-6697, Att. C [8] 4.6 1.1 9.9E+01 Sr-90+D P 2 S Lognormal-n NUREG/CR-6697, Att. C[8] 4.1 1.1 6.OE+01 Tc-99 P 2 S Lognormal-n NUREGICR-6697, Att C [8] 3 1.1 2.OE+01 Th-229+D P 2 S Lognormal-n NUREG/CR-6697, Att. C [8] 4.6 1.1 9.9E+01 Th-230 P 2 S Lognommal-n NUREG/CR-6697, AUt. C [8] 4.6 1.1 9.9E+01 U-233 P 2 S Lognormal-n NUREG/CR-6697, Att. C [8] 2.3 1.1 1.OE+01 U-234 P 2 S Lognormal-n NUREG/CR-6697, Att. C[8] 2.3 1.1 I 1.OE+01 U-235+D P 2 S Lognormal-n NUREG/CR-6697, Att. C [8] 2.3 1.1 1.OE+01

_______ ~Bioaccumulation Factors for Crustacea/ Mollusks (pCi/kg per pCVIL) ________ ____ _________

Ac-227+D P 3 D 1.OOE+03 RESRAD Default NR NR NR NR Ag-108m P 3 D 7.70E+02 RESRAD Default NR NR NR NR Am-241 P 3 D 1.OOE+03 RESRAD Default NR NR NR NR Am-243+D P 3 D 1.00E+03 RESRAD Default NR NR NR NR

Project: Yankee Rowe Ucense Tennination Caic. No. YA-CALC-00-006-03

(

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 34 of 35 l Table 7 Input Parameters for Soil Derived Concentration Guideline Values (= Input for Base Cases)

Resident Farmer Scenario Distributions statistical Paramete-. Mean Parameter (unit) Type' Priorityb Treatment' Value/Distribution Basis 1 2 3 4 {Median}

C-14 P 3 D 9.10E+03 RESRAD Default NR NR NR NR Cm-243 P 3 D 1.00E+03 RESRAD Default NR NR NR NR Co-60 P 3 D 2.OOE+02 RESRAD Default NR NR NR NR Cs-1 34 P 3 D 1.OOE+02 RESRAD Default NR NR NR NR Cs-137+D p 3 D 1.OOE+02 RESRAD Default NR NR NR NR Eu-1 52 P 3 D 1.OOE+03 RESRAD Default NR NR NR NR r Eu-154 P 3 D 1.00E+03 RESRAD Default NR NR NR NR Eu-1 55 P 3 D 1.OOE+03 RESRAD Default NR NR NR NR Fe-55 P 3 D 3.20E+03 RESRAD Default NR NR NR NR Gd-152 P 3 D 1.OOE+03 RESRAD Default NR NR NR NR H-3 P 3 D 1.OOE+O0 RESRAD Default NR NR NR NR Nb-94

_ P 3 1.OOE+02 RESRAD Default HR HR HR HR Ni-63 P 3 D 1.00E+02 RESRAD Default NR NR NR NR Np-237+D P 3 D 4.OOE+02 RESRAD Default HR HR NR HR Pa-231 P 3 D 1.1OE+02 RESRAD Default NR NR NR NR Pb-213+D P 3 D 1.OOE+02 RESRAD Default NR NR NR NR Pu-238 P 3 D 1.OOE+02 RESRAD Default NR NR NR NR Pu-239 P 3 D 1.00E+02 RESRAD Default NR NR NR NR Pu-241+3 P 3 D 1.00E+02 RESRAD Default NR NR NR NR Ra-226+1D P 3 D 2.50E+02 RESRAD Default HR HR HR NR Sr-90+D P 3 D 1.OOE+02 RESRAD Default NR NR NR NR Sb-125 P 3 D 1.00E+01 RESRAD Default NR NR NR NR Tc-99 p 3 D 5.001E+00 RESRAD Default HR HR HR HR Th-229+D P 3 D 5.OOE+02 RESRAD Default NR NR NR NR Th-230 P 3 D 5.OOE+02 RESRAD Default NR NR NR NR U-233 P 3 D 6.OOE+01 RESRAD Default NR NR NR NR U-234 P 3 D 6.OOE+01 RESRAD Default NR NR NR NR U-235+3 P 3 D 6.OOE+01 RESRAD Default NR NR NR NR

Project: Yankee Rowe Ucense Termination Calc. No. YA-CALC-00-006-03

Subject:

Determination of Area Factors for Soil at the Yankee Rowe Site Page 35 of 35 Table 7 Input Parameters for Soil Derived Concentration Guideline Values ( Input for Base Cases)

Resident Farmer Scenario Distribution's Statistical Parametersd Mean Parameter (unit) Typem Priorit? Treatment' Value/Distribution Basis 1 l3 l 2 l 4 {Median}

Graphics Parameters Number of points 32 IRESRAD Default NR NR I NR NR Spacing log RESRAD Default NR NR NR NR Time Integration Parameter Maximum number of points for dose 17 RESRAD Default NR NR NR NR Table 2 Notes:

• P = physical, B = behavioral, M = metabolic; (see NUREG/CR-6697, Attachment B, Table 4.)

t 1 = high-priority parameter, 2 = medium-priority parameter, 3 = low-priority parameter (see NUREG/CR-6697, Attachment B, Table 4.1) c D = deterministic, S =stochastic d Distributions Statistical Parameters:

Lognormal-n: 1= mean, 2 = standard deviation Bounded lognormal-n: 1= mean, 2 = standard deviation, 3 = minimum, 4 = maximum Truncated lognormal-n: 1- mean, 2 = standard deviation, 3 = lower quantile, 4 = upper quantile Bounded normal: 1 =mean, 2 - standard deviation, 3 - minimum, 4 = maximum Beta: 1 = minimum, 2 = maximum, 3 = P-value, 4 value Triangular I = minimum, 2 = mode, 3 = maximum Uniform: 1 =minimum, 2 = maximum Additional Sensitivity Analysis Data:

Sampling technique = Latin Hypercube Number of observations =2000 Number of repetitions = 1 Input Rank Correlation Coefficients:

Thickness of contaminated zone and unsaturated zone = - 0.99 Total porosity and bulk density = - 0.99 (contaminated zone, unsaturated and saturated zones)

Total porosity and effective porosity = 0.96 (unsaturated and saturated zones)

Effective porosity and bulk density = -0.99 (unsaturated and saturated zones)

Well Pumping Rate and Irrigation Rate = 0.96