ML031960312

Yankee Atomic Electric Company, Calculation for License Termination Plan (Ltp) Development, Dose Conversion Factor (and Related) Parameter Summary, Through Attachment 1

ML031960312
Person / Time
Site:	Yankee Rowe
Issue date:	06/20/2003
From:	Kay J Yankee Atomic Electric Co
To:	Document Control Desk, NRC/FSME
References
-RFPFR, BYR 2003-052 YA-CALC-00-001-03, YA-CALC-00-002-03
Download: ML031960312 (63)

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CALCULATION TITLE PAGE RESRAD 6.21 Sensitivity Analysis for Soil-Resident Farmer Scenario Title YA-CALC-00-001-03 Calculation Number Executive Summary:

RESRAD version 6.21 was used to identify the parameters in the resident farmer model that are correlated to the dose. This calculation presents the methodology used to prioritize parameters and provides the results of the sensitivity analysis. RESRAD also calculates the peak of the mean dose per unit radionuclide concentration that will be used in subsequent calculation of the Derived Concentration Guideline Levels (DCGL) for YNPS site soil.

Approvals (Print & Sign Name)

Preparer Ron Cardarelli . Date: (i /&/o3 E3t Preparer: Estella Keefer iS,L tes114 Date: 6iz Preparer: Pete Littlefield ,{ t , /Date: 6,////°3 Reviewer: 4Ucg 05Nq (section: ALL- Date: So Reviewer: , 7 Section: ILL_ Date: 6 /hre/ /

Reviewer: fLblJ Section: ,_ Date:

Approver (Cognizant Manager): G _j*" QDte: 4 '3 DCM FORM 1.5-1A Page 1

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 2 TABLE OF CONTENTS Page PURPOSE: .. . . . . . . . . . . . . . . . . . 3

SUMMARY

OF RESULTS:. 3

REFERENCES:

. 9 ASSUMPTIONS: .................... 10

1. Radionuclide Suite ................. 10

2. Dose Model: The Resident Farmer Scenario of RESRAD 6.21 ................................................... 10

3. Conceptual Model underlying the dose model ................................................... 10 METHOD I BODY OF CALCULATION: .. 11

1. Parameter Selection Process ................................................... 11

2. Sensitivity Analyses ................................................... 12 TABLES Table 1. YNPS Suite of Radionuclides ................... 3 Table 2. Results of the Sensitivity Analysis ................................................... 4 FIGURES Figure 1. Parameter Selection Process ................................................... 12 ATTACHMENTS No. of Pages . Physical Parameters Assigned Site-Specific Values ................................................... 15 . Input Parameters for Sensitivity Analysis, Soil................................................... 22 . YACALC-00-001-03 CD ................................................... 2

Project: Yankee Rowe License Termnination Plan Calculation No. YA-CALC-00-001-03 Subject RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 3 PURPOSE:

The purpose of this calculation is to identify the stochastic parameters used in the RESRAD Resident Farmer Scenario that have the greatest influence on the peak of the mean dose. The RESRAD code, Version 6.21 includes probabilistic modules that perform "sensitivity analyses". Each parameter identified as stochastic is assigned a distribution based on NUREG/CR-6697 guidance. The distribution statistics are used as the input to the probabilistic module of RESRAD. The results of the sensitivity analysis include the peak of the mean dose and information that can be used to determine conservative values for "sensitive" parameters for use in subsequent RESRAD runs to determine nuclide Derived Concentration Guideline Levels (DCGL) for soil.

SUMMARY

OF RESULTS:

The RESRAD results of the sensitivity analyses provide a Partial Rank Correlation Coefficient (PRCC) for each of the stochastic parameters. The PRCC is a measure of correlation of the resultant dose with the input parameters. Parameters were identified as sensitive if the absolute value of the PRCC was greater than or equal to 0.25 and non-sensitive if the absolute value of the PRCC was less than 0.25. The sensitivity runs were performed for a suite of 23 nuclides listed in Table 1.

Table 2 summarizes the results of the sensitivity analyses as follows:

1. R-squared, the coefficient of determination, presents a measure of the variation in the peak dose,

2. The peak of the mean dose for each radionuclide of interest is based on the time that the dose, averaged over all samples, is the maximum.

3. The PRCC value for each sensitive parameter in order of rank, by nuclide. The parameter with the highest PRCC value (rank =1) has the strongest relationship with the total dose.

Table I YNPS Suite of Radionuclides H-3 Ru-106 C-14 Ag-108m Mn-54 Sb-125 Fe-55 Cs-134 Cs-137 Co-60 Eu-152, Eu-154, Eu-155 Ni-59, Ni-63 Pu-238, Pu-239, Pu-241 Sr-90 Am-241 Nb-94 Cm-243 Tc-99

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 4 Table 2 Results of the Sensitivity Analysis Radionuclide Sensitive Units PRCC1 Parameters [R Squared] 2 Peak of the Mean Dose ( mRem/yr)3 RepetXton I Repetition 2 Repetition 3 H-3 Depth of roots m -0.79 -0.82 -0.84 Kd of H-3 In contaminated zone cm3/g -0.52 -0.45 -0.55 Thickness of contaminated zone m 0.44 0.51 0.56

[0.94] 10.94] [0.95]

2.932E-02 2.913E-02 2.947E-02 C-14 Depth of roots m -0.86 -0.89 -0.88 Thickness of contaminated zone m 0.63 0.65 0.68 Thickness of evasion layer of C-14 m 0.37 0.36 0.40 10.97] [0.97] 10.97]

2.229E+00 2.219E+00 2.227E+00 Mn-54 Extemal gamma shielding factor Unit-less 0.97 0.98 0.98 Plant transfer factor for Mn pCVg plant per pCi/g 0.64 0.70. 0.68 soil Depth of roots m -0.26 -0.33

[0.951 (0.97) (0.961 1.153E+00 1.154E+00 1.156E+00 Fe-55 Meat transfer factor for Fe pCVkg per pCi/d 0.94 0.93 0.94 Plant transfer factor for Fe pCUg plant per pCVg 0.67 0.68 0.70 soil Depth of roots m -0.31 -0.27 -0.31 10.90] 10-891 (0.90]

6.907E-04 6.923E-04 6.904E-04 NI-S9 Plant transfer factor for Ni pCVg plant per pCVg 0.90 0.90 0.91 soil Milk transfer factor for Ni pCII per pCUd 0.83 0.81 0.81 Depth of roots m -0.61 -0.61 -0.64 10.90] [0-89] [0.90]

6.010E-03 6.023E-03 6.550E-03 Ni-63 Plant transfer factor for Ni pCVg plant per pCI/g 0.90 0.90 0.91 soil Milk transfer factor for Ni pCUI per pCVd 0.83 0.81 0.81 Depth of roots m -0.61 -0.61 -0.64

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 5 Table 2 Results of the Sensitivity Analysis Radionuclide Sensitive Units PRCC' Parameters [R Squaredj 2 Peak of the Mean Dose ( mRem/yr)3 Repetitlon I Repetitlon 2 Repetition 3

[0.90] [0.89] [0.90]

1.645E-02 1,649E-02 1.793E-02 Co-60 Extemal gamma shielding factor Unit-less 0.96 0.97 0.96 Plant transfer factor for Co pCVg plant per pCVg 0.61 0.66 0.67 Meat transfer factor for Co soil 0.33 0.30 0.39 Depth of roots pCikg per pCVd -0.30 -0.37 -0.29 m [0.93] [0.94] [0.92]

5.172E+00 5.154E+00 5.167E+00 Sr-90 Plant transfer factor for Sr pCVg plant per pCVg 0.93 0.94 0.94 Soil Depth of roots m -0.64 -0.65 -0.70 Milk transfer factor for Sr pCIA per pCVd 0.27

[0.901 [0.91] 10.921 9.270E+00 9.330E+00 9.653E+00 Nb-94 External gamma shielding factor Unit-less 1.00 1.00 0.99 Kd of Nb-94 in contaminated zone cm3/g 0.25 0.33 0.29

[0.99] [0.99] [0.991 2.927E+00 2.931 E+00 2.930E+00 Tc-99 Plant transfer factor for Tc pCi/g plant per pCUg 0.89 0.91 0.92 soil Depth of roots m -0.58 -0.61 -0.66 Kd of Tc-99 in contaminated zone cm3/g 0.25 0.30 0.32 (0.871 [0.881 [0.89]

9.883E-01 9.891 E-01 1.027E+00 Ru-106 Extemal gamma shielding factor Unit-less 0.89 0.91 0.92 Plant transfer factor for Ru pCVg plant per pCVg 0.79 0.77 0.82 Soil Depth of Roots m -0.38 -0.42 -0.47

[0.861 [0.87] [0.901 3.665E-01 3.668E-01 3.655E-01 Ag-108m Extemal gamma shielding factor Unit-less 1.00 1.00 1.00 Kd of Ag-108m in contaminated cm3/g 0.30 0.36 zone

ProJect: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 8.21 Sensitivity Analysis for Soil Sheet No. 6 Table 2 Results of the Sensitivity Analysis Radionuclide Sensitive Units PRCC' Parameters [R SquaredJ2 Peak of the Mean Dose m em/yr)3 Repetition 1 Repetition 2 Repetition 3 Plant transfer factor for Ag pCVg plant per pCVg 0.37 Soil Milk transfer factor for Ag pCi/I per pCVd 0.31 11.00) 11.001 [1.00]

_2.934E+00 2.932E+00 2.934E+00 Sb-125 External gamma shielding factor Unit-less 1.0 1.0 0.99 Plant transfer factor for Sb pCVg plant per pCUg 0.29 Kd of Sb in contaminated zone soil 0.31 0.31 cmn3/g 10.99] [0.99] [0.991 6.619E-01 6.627E-01 6.626E-01 Cs-134 External gamma shielding factor Unit-less 0.88 0.87 0.88 Plant transfer factor for Cs pCilg plant per pCi/g 0.79 0.81 0.84 soil Depth of roots m -0.38 -0.44 -0.46 Milk transfer factor for Cs pCUI per pCVd 0.32 0.41 Meat transfer factor for Cs pCIkg per pCVd 0.34

[0.85] [0.86] [0.88]

3.751 E+00 3.688E+00 3.728E+00 Cs-137 Plant transfer factor for Cs pCi/g plant per pC/g 0.86 0.85 0.87 soil Extemal gamma shielding factor Unit-less 0.81 0.78 0.81 Depth of roots m -0.45 -0.51 -0.54 Milk transfer factor for Cs pCI/I per pCUd 0.47 0.46 0.44 Meat transfer factor for Cs pCikg per pCVd 0.29 0.36

[0.861 10.85] 10.87]

2.042E+00 2.037E+00 2.052E+o0 Eu-162 External gamma shielding factor Unit-less 1.00 1.00 1.00 Kd of Eu-152 in Contaminated Zone cm3/g 0.25 0.31 0.25 10.99] [0.991 [0.99]

2.073E+00 2.074E+00 2.073E+00 Eu-154 External gamma shielding factor Unit-less 1.0 1.0 1.0 Kd of Eu-i 54 In Contaminated Zone cm3lg 0.29 0.28

[1.001 [1.00] [1.00]

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-0O-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 7 Table 2 Results of the Sensitivity Analysis Radionuclide Sensitive Units PRCC' Parameters [R Squaredf Peak of the Mean Dose m em/yr

.________________ ___________________________ __________________ Repetition I Repetition 2 Repetition 3 2.246E+00 2.247E+00 2.248E+00 Eu-155 External gamma shielding factor Unit-less 1.0 1.0 1.0 Plant transfer factor for Eu pCVg plant per pCi/g soi 0.38 0.41 0.32 Kd of Eu-155 in Contaminated Zone cm3/g 0.29 t0.99] [1.001 (1.00]

5.348E-02 5.353E-02 5.354E-02 Pu-238 Plant transfer factor for Pu pCI/g plant per pCVg 0.93 0.92 0.94 soil Depth of roots m -0.65 -0.68 -0.76 Thickness of the contaminated zone m 0.26

[0.911 1[-0903 0.921 4.714E-01 4.952E-01 4.839E-01 Pu-239 Plant transfer factor for Pu pCUg plant per pCVg 0.93 0.94 0.93 Soil Depth of roots m -0.71 -0.69 -0.69 Thickness of the contaminated zone C 0.27 (0.901 [0.911 [0.911 5.462E-01 5.445E-01 5.275E-01 Pu-241 Plant transfer factor for Am pCVg plant per pCUg 0.86 0.89 0.89 soil Depth of roots m -0.52 -0.61 -0.63 Kd of Am-241 in contaminated zone cm3/g 0.28 Plant transfer factor for Pu pCVg plant per pCiVg 0.26 soil (0.84] [0.86] (0.87]

1.578E-02 1.581 E-02 . 1.624E-02 Am-241 Plant transfer factor for Am pCVg plant per pCVg 0.93 0.93 0.93 soil Depth of roots m -0.70 -0.66 -0.69

[0.911 [0.90] [0.911 5.637E-01 5.639E-01 5.496E-01 Cm-243 Plant transfer factor for Cm pCVg plant per pCiUg 0.91 0.91 0.91 soil External gamma shielding factor Unit-less 0.66 0.66 0.65

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 8 Table 2 Results of the Sensitivity Analysis Radionuclide Sensitive Units PRCC' Parameters [R Squared] 2 Peak of the Mean Dose mRem/yr)3 Repetition 1 Repetition 2 RepetItion 3 Depth of roots m -0.56 -0.62 -0.63

[0.891 [0.88] 10.891 5.493E401 5.445E-01 5.582E-01 Footnotes:

1. Partial Rank Correlation Coefficient from RESRAD sensitivity analyses.

2. R-Square value from RESRAD sensitivity analyses.

3. Dose Is the Peak Mean Dose from the RESRAD sensitivity analyses for a soil concentration of I pCi/g.

Project: Yankee Rowe Ucense Ternination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 9

REFERENCES:

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

Volume 1: 'Technical Basis for Translating Contamination Levels to Annual TEDE," October 1992 Volume 2: "Users Manual DandD Version 2.1," April 2001 Volume 3: "Parameter Analysis, Draft Report for Comment, " October 1999.

2. Code of Federal Regulations, Title 10, Section 20.1402, "Radiological Criteria for Unrestricted Uses."

3. NUREG-1 727. "NMSS Decommissioning Standard Review Plan," September 2000.

4. ANUEAD-4, "Users Manual for RESRAD Version 6.0." Yu, C. et al., July 2001.

5. 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.

6. NUREGlCR-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-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.

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

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

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-0-0-ol.03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 10 ASSUMPTIONS:

1. Radionuclide Suite Sensitivity Analyses were performed for the radionuclides listed in Table 1. This suite of radionuclides was developed by the License Termination team to encompass the significant radionuclides that may exist at the site at the time of the final status survey.

2. Dose Model: The Resident Farmer Scenario of RESRAD 6.21 The dose model used to perform the sensitivity analyses (and to calculate the corresponding soil DCGLs) is based upon the Resident Farmer Scenario defined in NUREG/CR Volumes 1, 2 and 3, (Ref. 1). The dose model translates residual soil radioactivity into potential radiation dose and is defined by the scenario, exposure pathways and the critical group. The resident farmer scenario is a reasonably conservative bounding scenario, which generally overestimates (rather than underestimates) potential dose.

The residual radioactivity in this scenario is assumed to be contained in a soil layer on the property that can be used for residential and light farming activities. The residential farming family is expected to live onsite, raise crops and livestock for consumption and drink water from a ground water source onsite. The dose from residual radionuclides in the soil is evaluated for the average member of the critical group as required by IOCFR Part 20, Subpart E and described in NUREG-1727, Appendix C (Ref. 2, Ref. 3). The critical group represents the group reasonably expected to receive the greatest exposure, given the scenario, to residual radioactivity The potential exposure pathways that define the residential farmer scenario are:

1. Direct exposure to extemal radiation from radionuclides in the soil

2. Intemal dose from inhalation of airbome radionuclides, and

3. Intemal dose from ingestion of radionuclides in

a. Crops grown on the property and irrigated with water obtained onsite,

b. Meat and milk obtained from livestock fed fodder and water produced onsite,

c. Drinking water from an onsite well,

d. Fish from an onsite pond and

e. Soil.

3. Conceptual Model underlying the dose model The conceptual model used in the code was 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. (Ref. 4).

Project Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 1 .

METHOD I BODY OF CALCULATION:

1. Parameter Selection Process The dose and conceptual models are quantified by a set of input parameters that are listed in Attachment 2, Table I under the following categories Soil Concentration

• Distribution Coefficients

• Calculation Time

• Contaminated Zone

• Cover and Hydrological Data

• Saturated Zone Hydrological Data

• Unsaturated Zone Hydrological Data

• Occupancy

• Ingestion, Dietary

• Ingestion, Non-dietary

• Storage Times

• Special Radionuclides (C-14)

• Dose Conversion Factors

• Transfer Factors Incorporated within RESRAD Version 6.21 are Probabilistic Modules that allow the evaluation of dose as a function of parameter distributions. The code output provides a measure of the sensitivity of the dose to variations in parameter values as defined by the statistical parameters of an assigned probability distribution. To aid in selecting which parameter sensitivities to evaluate, a process was followed in this calculation that was developed in accordance with guidance from NUREG/CR-6676, -6692, and -6697 (Ref. 5, Ref. 6, & Ref. 7). A schematic flow diagram of the parameter selection process is provided in Figure 1. Each step of the selection process is discussed below.

Classification (Type):

The parameters were classified as behavioral, metabolic or physical consistent with NUREG/CR-6697.

Behavioral parameters depend on the behavior of the receptor and the scenario definition. Metabolic parameters represent the metabolic characteristics of the receptor and are independent of the scenario definition. Physical parameters are the parameters that would not change if a different group of receptors were considered.

Prioritization The parameters were prioritized in order of importance consistent with NUREG/CR-6697. Prioritization was based on

1. The relevance of the parameter in dose calculations,

2. The variability of the dose as a result of changes in the parameter value,

3. The parameter type and

4. The availability of parameter-specific data.

Priority 1 parameters are considered to be high priority; priority 2 parameters are considered to be medium priority; and priority 3 parameters are considered to be low priority.

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-X0-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 12 Treatment The parameters were treated as either 'deterministic" or 'stochastic" depending on parameter type, priority, availability of site-specific data and the relevance of the parameter in dose calculations. The "Deterministic" modules of the code use a single value for input parameters and generate a single value for dose. The 'Probabilistic' modules of the code use probability distributions for input parameters and generate a range of doses. The "Stochastic" parameters are parameters that are defined by a probabilistic distribution. The bases for the values assigned to the input parameters are outlined in Attachment 2, Table 1.

• The behavioral and metabolic parameters were treated as deterministic and were assigned values from NUREG/CR-5512, Volume 3, NUREG/CR-6697, or the RESRAD default library.

. The physical parameters for which site-specific data were available were also treated as deterministic. The basis for calculated physical parameter values is provided in Attachment 1 and YA-REPT-00-002-003 (Ref. 8).

• The remaining physical parameters, for which no site-specific data were available to quantify, were classified as either priority 1, 2, or 3. Priority 1 and 2 parameters were treated as stochastic and were assigned a probability distribution from NUREG/CR-6697. The priority 3 physical parameters were treated as deterministic and were assigned values from NUREG/CR-5512, Volume 3, NUREG/CR-6697, or the RESRAD default library.

2. Sensitivity Analyses The probabilistic module of the RESRAD code was used to perform the analyses to determine which stochastic parameters have the greatest influence on the resultant dose and the associated DCGLs. The code performs regression analyses to determine the correlation of the dose with the input parameter distributions and the Partial Rank Correlation Coefficient (PRCC) is provided for each parameter. The PRCC is ranked and can be used to determine the relative importance of each input parameter in influencing the dose. To perform the sensitivity analyses, the following input information is entered into the code. A detailed summary of this information is provided in Attachment 2, Table 1.

Sample Specifications The analyses were run using 300 observations and 3 repetitions. The Latin Hypercube Sampling (LHS) technique was used to sample the probability distributions for each of the stochastic input parameters.

The correlated or uncorrelated grouping option was used to preserve the prescribed correlations, and a random seed of 1000 was used to preserve the prescribed sampling technique.

Input Rank Correlations Correlation coefficients were assigned between correlated parameters. The values of the input correlations between parameters are based on guidance provided in NUREG-6676 and NUREG-6697 (Ref. 5, Ref. 7).

Output Specifications All of the output options were specified.

A sensitivity analysis was performed for each radionuclide. The Partial Rank Correlation Coefficient (PRCC) for the peak of the mean dose was used as the measure of the sensitivity of each parameter to the peak of the mean dose.

For the resident farmer scenario, a parameter was Identified as sensitive If the absolute value of Its PROC (IPRCCI) was greater than or equal to 0.25 and non-sensitive if the IPRCCI value was less than 0.25.

These thresholds were selected based on the guidance included in NUREG/CR-6676.

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-O1-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. 13 Figure 1 Parameter Selection Process

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-O-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-1

. -I ATTACHMENT I Supporting Documentation for Site-Specific Physical Parameter Values

Project Yankee Rowe License Termination Plan Calculation No. YA-CALC-0O-O01 -03 Project: Yankee Rowe License Termination Plan Calculaflon No. YA-CALC40oo0143

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-2 Table of Contents Paqe

1. Area of the Contaminated Zone ..................................................................... 3

2. Contaminated Zone Erosion Rate ..................................................................... 4

3. Humidity in Air..................................................................... 6

4. Average Annual Wind Speed ..................................................................... 6

5. Precipitation ...................................................................... 8

6. lrrigation Rate (Evapotranspiration and Runoff Coefficients) ....................................... 9

7. Field Capacity: Contaminated Zone, Unsaturated Zone 1 and Saturated Zone .............. 11

8. Saturated zone Hydraulic Gradient ..................................................................... 12

9. Well Pumping Rate ..................................................................... 14

10. Watershed for Nearby Stream or Pond ................................................................... 15

Project Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-3

1. Area of the Contaminated Zone Figure 1-1, (YR Drawing: 9699-FY-6BA Originao Rowe Site Closure Base Map was geflerated with AutoCAD Version 6. The area of the contaminated zone was drawn and calculated by the AutoCAD soflware. Converting to 0: (140174 f 2 ) * (9.29E-02 m2) = 13022m2 . The Area of the contaminated zone was assigned a value of 13022m 2.

Figure 1- 1 Area of the RCA S

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i'

..1 I.

. q--1i.

7 ft 4 K

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1%

iI t11

(

y  : Ix!,

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\s', --'

1 , . WI.

51 \ .

II II 4

1, I\ , I 6

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-XO-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-4

2. Contaminated Zone Erosion Rate The slope of the contaminated zone was determined from the Rowe Site Closure Base'map (YR Drawing:

9699-FY-6BB Original generated by AutoCAD Map Version 6. The line extending from the vicinity of CB-2 to the vicinity of CB-3 Is a run of 700 feet with a decreasing change in elevation from 1140 to 1120 feet.

The slope at the Rowe site is 20' per 700', which corresponds to a 2.86% slope.

The following YR site drawing provides a transferable scale to the Vapor Containment

Reference:

VC Site Drawing Number 9699-FV-la Scale: Outer Diameter of VC sphere = 125' Figure 2-1 Rowe Site Closure Base Map

, I

,,X f:

J. 9 -

.I

. '. r I

Project: Yankee Rowe License Ternination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-5 Data from NUREG/CR-6697, Attachment C, Section 3.8, 2nd paragraph of the Discussion Section on pages 3-25 & 3-26, was used to select the appropriate Erosion Rate that corresponds to the Rowe Site slope of 2.86%.

The data in Table 2-1 below was generated using NUREG/CR-6697's row-crop Erosion Rate of 6.0 E-4 for a 2 % slope. Erosion Rates where then calculated for 6, 10 and 15 percent slopes using their rate increase factors as specified in the Discussion of Section 3.8 referenced above. As recommended in this section of NUREG/CR-6697, the Erosion Rate of 6.0 E-4 for a 2% slope was assumed based on a farm-garden scenario where the dose contribution from the food ingestion pathway is expected to be significant.

Table 2-1 Erosion Rate Percent Erosion Rate Slope (mhyr) 2 6.OE-4 5 1.8E-3 10 4.2E-3 15 9.OE-3 Plotting the above Erosion Rate/Slope data and then selecting a value which corresponds to the Rowe site slope of - 2.9 %, yields an 8.5 E-4 n/yr Erosion Rate.

Figure 2-2 Erosion Rate vs. Slope Erosion Rate for Row Crops 1.OOE+O00 1i.OOE-01 .....

Eu I .OOE-02 c

I .OOE-03 I .OOE-04

%Slope

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-6

3. Humidity in Air The reference, "Regional and Site-Specific Absolute Humidity Data for Use in Tritium Dose Calculations",

Health Physics, Vol.39, pp31 8-320, 1980 provides a table of absolute humidity for selected locations in the US. These values were calculated from data from the National Oceanic and Atmospheric Administration, 1977, Climatological Data, Annual Summary, volume 28(13), US Dept of Commerce.

The value of 6.1 g/m3 was chosen for the RESRAD humidity parameter corresponding to the Northeast region in the vicinity of Albany, NY.

4. Average Annual Wind Speed The wind speed and direction, joint frequency distributions from Table 3.3-2 of the YNPS Environmental Decommissioning were used to calculate the average annual windspeed. The mid-range value was calculated for each of the ranges for which data was available. An average windspeed was calculated by summing the product of the mid-range value for each range and the percentage of time the wind was recorded to be within that range. A value of 2.03 mIs was assigned to this parameter.

Table 4- 1 Wind Speed Min. Max. Mid-Range Percent Mid-Range Wind Speed Wind Speed Wind Speed of Time in (weighted by (mph) (mph) (mph) Range percentage of time) 0.00 0.95 0.48 0.00 0.00 0.95 3.00 1.98 47.11 0.93 4.00 7.00 5.50 38.98 2.14 8.00 12.00 10.00 12.72 1.27 13.00 18.00 15.50 1.16 0.18 19.00 24.00 21.50 0.02 0.00 Average: 4.53 mph Converting to meters/second: 4.53 miVhr x I meter/6.214-04 mi x 1hl3600 sec = 2.03 meters/sec

c-YNPS 35-Foot M; Wind Speed and Direction Joint Frequency Distributions 1988-1992 WIND DIRECTION FROM a SPEED(MPH) N NNE HE EWE E ESE SE SSE S SSU SW WSW W WW NW NNW VRBL TOTAL O o-.

CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 o I >

(2) .00. .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 S D C-3 570 1010 1351 1672 2941 3952 2556 1741 1284 942 763 385 283 221 169 297 0 20137 @ 1J o (1) 1.33 2.36 3.16 3.91 6.88 9.25 5.98 4.07 3.00 2.20 1.78 .90 .66 .52 .40 .69 .00 47.11 2-n -

(2) 1.33 2.36 3.16 3.91 6.88 9.25 5.98 4.07 3.00 2.20 1.78 .90 .66 .52 .40 .69 .00 47.11 _O 4-7 1468 1363 975 727 761 374 455 773 1230 2046 2570 1176 773 565 625 783 0 16664 2.

Ci) 3.43 3.19 2.28 1.70 1.78 .87 1.06 1.81 2.88 4.79 6.01 2.75 1.81 1.32 1.46 1.83 .00 38.98 X (2) 3.43 3.19 2.28 1.70 1.78 .87 1.06 1.81 2.88 4.79 6.01 2.75 1.81 1.32 1.46 1.83 .00 38.98 c 8-12 1137 952 263 35 4 2 2 13 96 483 1159 481 179 137 188 308 0 5439 a a (1) 2.66 2.23 .62 .08 .01 .00 .00 .03 .22 1.13 2.71 1.13 .42 .32 .44 .72 .00 12.72 o m (2) 2.66 2.23 .62 .08 .01 .00 .00 .03 .22 1.13 2.71 1.13 .42 .32 .44 .72 .00 12.72 C) 13-18 141 195 12 1 0 0 0 0 1 12 116 9 1 1 0 7 0 496 1 Cl)

(2)

.33

.33

.46

.46

.03

.03

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.03

.03

.27

.27

.02

.02

.00

.00

.00

.00

.00

.00

.02

.02

.00

.00 1.16 1.16 3;a 0

19 24 2 5 1 0 0 0 0 0 0 0 2 0 0 0 0 0 0 10 m (1) .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 W (2) .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 0 clc CT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 CD Z .

(2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 _0 ,

00:

ALL SPEEDS 3318 3525 2602 2435 3706 4328 3013 2527 2611 3483 4610 2051 1236 924 982 1395 0 42746 0 Q Cl) 7.76 8.25 6.09 5.70 8.67 10.12 7.05 5.91 6.11 8.15 10.78 4.80 2.89 2.16 2.30 3.26 .00 100.00 . ' QD *° (2) 7.76 8.25 6.09 5.70 8.67 10.12 7.05 5.91 6.11 8.15 10.78 4.80 2.89 2.16 2.30 3.26 .00 100.00 ' C (1)xPERCENT OF ALL GOODOBSERVATIONS FOR THIS PAGE o (2)-PERCENT OF ALL GOO OHSERVATIONS FOR THIS PERIOD Ca CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) . r.

(D 0 0 2 0

Project: Yankee Rowe Uoense Termination Plan Calculation No. YA-CALC-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-8

5. Precipitation Table 3.3-4 of the YNPS Environmental Decommissioning Report provides monthly mean precipitation totals for Readsboro, Vt (located within 5 miles of the YNPS). This information is based on data from the National Oceanic and Atmospheric Administration.

Figure 5- 1 Precipitation Rate Readsboro Monthly Mean Precipitation Totals (inches of water)

Period:1 961-1990 Month Precipitation (inches)

Jan 3.49 Feb 3.43 Mar 3.86 April 4.32 May 4.59 Jun 4.54 Jul 4.08 Aug 4.29 Sept 3.79 Oct 3.8 Nov 4.61 Dec 4.28 Year Total 49.08 Converting to meters/year 49.08 inches/year x 2.54 cm/inch x meter/I 00 cm = 1.2 meters/year. The precipitation rate was assigned a value of 1.2 meters/year

A Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitiity Analysis for Soil Sheet No. Attachment 1-9

6. Irrigation Rate (Evapotranspiration and Runoff Coefficients)

NUREG/CR-6697 Attachment C, Section 4.3 discusses the Irrigaton Rate in terms oethe Evapotranspiration Coefficient Equation 4.3-1 expresses the Evapotranspiration Coefficient as:

Ce= ETr (1-Cr)(Pr) + IRr Where: ETr = the Evapotransporation Rate (mly)

Pr = the Precipitation Rate (mly)

IRr = the Irrigabon Rate (m/y) and Cr = the Runoff Coefficient Rearranging this equation, the Irrigation Rate can be expressed as:

lRr = ETr - (1-Cr)(Pr)

Ce The input values for the variables in the equation above follow:

1. YA-REPT-00-002-03, (Ref. 8), cites a value for the average annual Evapotranspiration Rate, ETr, in the upper Housatonic River basin of 21.6 in/yr or 0.549 m/yr from 1931 to 1960.

2. The Precipitation Rate, Pr, has been assigned a site-specific value of 1.2 m/yr as discussed in Section 5 of this Attachment.

3. Appendix E, Table E.1 of Ref. 4 provides the equation below to calculate the Runoff Coefficient, Cr. for an agricultural environment. Table E.1, Runoff Coefficient Values, also lists values for c1 , c 2 and c 3 for various environments:

Cr= 1-C 1 -C 2 -C 3 c, = 0.1 for hilly land with an average slopes of 46 m/mi (Refer to secbon 2 of this Attachment for the site slope determinabon- 20' drop per 700' run or 46 mImi).

c2 = 0.2 for intermediate combinations of clay and loam as identified at the site in Ref. 8.

c 3 = 0.1 for cultvated lands which also fits the scenario for the site.

Cr = 1 -0.1 -0.2 -0.1 = 0.6

4. NUREG/CR-6697, Attachment C, Section 4.3-Evapotranspiration Coefficient, Ce, defines this parameter as the ratio of the total volume of water (a combinabon of evaporation from soil surfaces and transpiration from vegetation) transferred to the atmosphere to the total volume of water available within the root zone of the soil. The NUREG recommends the use of a uniform distribution with minimum and maximum values of 0.5 and 0.75, respectively and with 0.625 as median. Any selected value for the irrigation rate should satisfy the Ce minimum to maximum range

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-10 Making the appropriate substitution of minimum and maximum values of Ce into the rearranged Equation 4.3-1 results in the following range for the Irrigation Rate, lRr.

Table 6- 1 Irrigation Rate "min" I.max!

%V>nshlv valevl .cA.JI~ vaAu*

Inl,=

VC~vaue

%1i1 *O rn/yr UlIlILQ ETr 0.549 0.549 m/yr Pr 1.2 1.2 m/yr Cr 0.6 0.6 Ce 0.5 0.75 lRr 0.252 0.618 mlyr Based on the calculated minimum and maximum lRr values, the median value is 0.435 m/y. A uniform distribution was assigned to this parameter and a positive input correlation to the Well Pumping Rate was assigned based on guidance in NUREG-6697 and NUREG- 6676.

Project Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-11

7. Field Capacity: Contaminated Zone, Unsaturated zone I and Saturated zone The "Data Collection Handbook to Support Modeling the Impacts of Radioactive MateHial in Soil," (Ref. 9) defines the relationship of field capacity (residual water content) to effective porosity. The field capacity is the ratio of the volume of water retained in the soil sample, after all drainage has ceased, to the total volume of the soil sample. Equation 4.4 of Ref. 9 relates Total and Effective Porosity to Field Capacity as follows:

Effective Porosity = Total Porosity - Field Capacity Rearranging this equation:

Field Capacity = Total Porosity - Effective Porosity Reference 8 provides site-specific values for the total and effective porosity for the soil types found at the site.

These values are listed below along with the calculated Field Capacity.

Table 7- 1 Field Capacity Zone I Soil Type Total Porosity Effective Porosity Field Capacity Contaminated/ loamy sand 0.35 0.25 0.10 Unsaturated/loamy sand 0.35 0.25 0.10 Saturated/sandy loam 0.30 0.21 0.09

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-o0-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-12

8. Saturated Zone Hydraulic Gradient NUREG/CR-6697, Attachment C, Section 3.6 -Hydraulic Gradient, discusses this parameters use in the determination of the groundwater flow rate, which effects the rise time and the dilution of radionuclides in the well water. The method for calculating the hydraulic gradient is given in NUREGICR-6697, Attachment C, Equation 3.6-1:

J,= hl-h 2

/Ax Where hi and h2 represent the hydraulic heads or the water level elevations at location 1 and 2, and Ax is the distance between the two locations. The water level elevations are referenced to mean sea level, msl. This methodology was followed in YA -REPT-00-002-03, Hydrogeological Parameter Estimates for Radiation Dose Modeling, (Ref. 8) to determine the average hydraulic gradient across the site. An average value for the site was calculated from three separate hydraulic gradient determinations as follows in Table 8.1. Figure 8.1 shows the well locations.

Table 8- 1 Hydraulic Gradient Well1 Location Water Level Distance Between Hydraulic Gradient, ftfft Designation Elevation (mst), ft Wells, ft CB-3 1135 Deerfield River below 1020 1000 (1135-1020)/1000 = 0.115 Sherman Dam CB-3 1135 CB-2 1105 533 (1135-1105)/533 = 0.056 CW-3 1132 CB-1 1114 118 (1132-1114)1118 = 0.152 Average = 0.1 The hydraulic gradient was assigned a value of 0.1 feet/foot.

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-13 Figure 8- 1 Monitoring Well Locations C

a.. r NJ C

i 0 I.d

• <i -1 1 IC' 4)

C

'4.

co -5 I8C, 0<

C:

14 S-C 0 0 C

14)

'a-c C

I I

'C ci 0

I l

'O 0 0

Dam Oa D

p EJ

~jD a

0 Ii~~~~~~~i

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-14

9. Well Pumping Rate NUREG/CR-6697, Attachment C, Section 3.10 states that "A site-specific input distribution for well pumping rate can be determined as the sum of individual water needs." The household use component is taken from YA-REPT-00-002-03, Ref. 8. To support the assumption that irrigation of pasture is not a common practice in New England, the USDA 1992 Census of Agriculture, State Data, was reviewed and showed that in 1992 in all of Massachusetts 19622 total acres of cropland was irrigated and 287 total acres of pastureland was irrigated. In1997 only one farm, in Franklin County, claimed irrigation of pasture.

Water Use Component Median Minimum Maximum Household 374 374 374 m/y Livestock 76.7 76.7 76.7 m Irrigation of vegetable plot Contaminated fraction fD = min (Area/2000, 0.5) 1 1 1 Irrigation rate Ir (rnh) 0.435 0.252 0.618 Irrigation water f, x I, x 2000 870 504 1236 m-By Irrigation of pasture (Not a New England practice.) __

Contaminated fraction fm = Areal20,000 <= 1. 1 1 1 1 Irrioaton rate I, (mh) 0 0 0 m Irrigation water f. x 1,x 20,000 0 0 0 m Drinking water 1.91 1.91 1.91 MI TOTAL FOR A FAMILY OF FOUR (sum ofwater components in Bold type) l 11323 l 957 1 1689 m4ty A uniform distribution was assigned to this parameter with a positive correlation to the Irrigation Rate.

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-001 -03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 1-15

10. Watershed for Nearby Stream or Pond The figure below is taken from a letter to the USNRC from Yankee Atomic Electric Co., FYR 82-59, 6/16/82 that delineates the watersheds to Wheeler Brook and to the site. An evaluation of this topograhic map and the drainage areas is also included in Ref. 8.

The watershed area to the site is 0.3 square miles. Converting to square meters yields a total watershed area of 0.3 mi2x (1609.3 m/mi )2 = 7.77E+05 M2 . This parameter was assigned a value of 7.77E+05m 2.

Figure 10- 1 Local Site Drainage Area

Project: Yankee Rowe Llcense Termination Plan Calculation No. YA-CALC-00-001-03 I

Subject:

RESRAD 6.21 SensHitvity Analysis for Soil Sheet No. Attachment 2-1 I Attachment 2 RESRA D 6.21- Input Parameters to Sensitivity Analysis for Soil Scenario: Resident Farmer

Project: Yankee Rowe License Termination Plan

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Calculation No. YA-CALC-00-001-03 Sheet No. Attachment 2-2 I

Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Pamameter(unit) I Types lPrtoritylalTreatmenteIValue/Distrlbutlonl Basis I Dlstrdbutlons Statistical Parameteria l 1w ll l ll 2 l 3 l 4 lMedian Soil Concentrations Basic radiation dose limft (mfe/yr) 3 1 D l 25 1 10 CFR 20.1402 (Ref. 3) NR NR NR l NR l _

Iniial pdncipal radionuclide (pCI/) P 2 l D I I Unit Value NR NR NR NR l Distributlon coefficients (contam., unsat. and sat. zones) (cmr3/g)

Ac-227+D P 1 S Truncated NUREG/CR-6697, Att. C 6.72 3.22 0.001 0.999 825 lognormal-n (Ref. 4)

Ag-O08m P 1 S Truncated NUREG/CR-6697, Aft. C 5.38 2.1 0.001 0.999 216 lognorrnal-n (Ref. 4)

Am-241 P 1 S Truncated NUREGICRa6697, Att. C 7.28 3.15 0.001 0.999 1445 b-normal-n (Ref. 4)

Am-243+D P 1 S Truncated NUREG/CR-6697, AK. C 7.28 3.15 0.001 0.999 1445 lognormnal-n (Ref. 4) _

C-14 P 1 S Truncated NUREG/CR-6697, At. C 2.4 3.22 0.001 0.999 11

,__________________________ losnorm al-n (Ref. 4) .

Cm-243 P 1 S Truncated NUREG/CR-6697, Att C 8.82 1.82 0.001 0.999 6781 lognormal-n (Ref 4)

Co-60 P 1 S Truncated NUREG/CR-6697, At. C 5.46 2.53 0.001 0.999 235 lognormal-n (Ref. 4)

Cs-134 P 1 S Truncated NUREG/CR-6697, At. C 6.1 2.33 0.001 0.999 446 losnormal-n (Ref. 4)

Cs-137+D P 1 S Truncated NUREG/CR-6697, Aft. C 6.1 2.33 0.001 0.999 446 lognomial-n (Ref. 4)

Eu-1 52 P 1 S Truncated NUREG/CR-6697, Att. C 6.72 3.22 0.001 0.999 825 lognormal-n (Re. 4)

Eu-1 54 P 1 S Truncated NUREG/CR-6697, At. C 6.72 3.22 0.001 0.999 825

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _rma l-n

.___ _- _ _ _ _ _ _-liogno (Ref. 4)

Eu-155 P 1 S Truncated NUREG/CR-6697, AUt. C 6.72 3.22 0.001 0.999 825

___ ______ ____ _______ ____ _______ _ ___ __ io l ggnoor_

l__ nnal-n (R ef. 4) __ ______ __ ________ _n4 Fe-55 P 1 S Truncated NUREG/CRa697, Att. C 5.34 2.67 0.001 0.999 209 lognonal-n (Ref 4)

Gd-i 52 P 1 S Truncated NUREG/CR-6697, Att. C 6.72 3.22 0.001 0.999 825 lognormal-n (Ref. 4)

H-3 P 1 S Truncated NUREG/CR-6697, Att. C -2.81 0.5 0.001 0.999 0.06 lognonnal-n (Ref. 4)

I ll~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--

Project: Yankee Rowe License Terminafton Plan

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Calculation No. YA-CALCX00-001-03 Sheet No. Attachment 2-3 I Table I Input Parameters for Sensitivity Analysis, Soil Resident Farrner Scenario Parameter (unit) Type, Priorityb Treatment 0 Value/Dlstrlbutlon Basis Distribution's Statistical Parametermd 1 2 3 4 Median Mn-54 P 1 S Truncated NUREG/CR-6697, Aft. C 5.06 2.29 0.001 0.999 158

>___________________________ l________

1ognorm al-n (Ref. 4)

Nb-94 P 1 S Truncated NUREG/CR-6697, Att. C 5.94 3.22 0.001 0.999 380

____________________________________ locnormal-n (Ref. 4)

NI-59 1 S Truncated NUREG/CR-6697, Att. C 6.05 1.46 0.001 0.999 424 lognormal-n (Ref. 4) .

Ni-63 P 1 S Truncated NUREG/CR-6697, Att. C 6.05 1.46 0.001 0.999 424 lognornal-n (Ref. 4)

Np-237.D P 1 S Truncated NUREG/CR46697, Att. C 2.84 2.25 0.001 0.999 17 lognormal-n (Ref. 4)

Pa-231 P 1 S Truncated NUREG/CR-6697, Att. C 5.94 3.22 0.001 0.999 380 1ognormal-n (Ref. 4) _

Pb-210+D P 1 S Truncated NUREG/CR-6697, At. C 7.78 2.76 0.001 0.999 2392 lognormal-n (Ref.4) _

Pu-238 P 1 S Truncated NUREG/CR-6697, Aft. C 6.86 1.89 0.001 0.999 953

- _ - _ iognormal-n (Ref. 4) _ _

Pu-239 P 1 S Truncated NUREGICR-6697, Att. C 6.86 1.89 0.001 0.999 953 lognormal-n (Ref. 4)

Pu-241+D P 1 S Truncated NUREGICR-6697, Att. C 6.86 1.89 0.001 0.999 953

_ lognormal-n (Ref. 4)

Ra-226+D P 1 S Truncated NUREG/CR-6697, Att. C 8.17 1.7 0.001 0.999 3533 lognormnawn (Ref. 4)

Ru-106 P 1 S Truncated NUREGICR-6697, AU. C 7.37 3.13 0.001 0.999 1588 lognormal-n (Ref. 4)

Sb-125 P 1 S Truncated NUREGICR-6697, AU. C 5.94 3.22 0.001 0.999 380 lognormal-n 4) fRet. ___

Sr-90+D 1 S Truncated NUREGICR-6697, At. C 3.45 2.12 0.001 0.999 32

_ognormal-n (Ref. 4)

Tc-99 P 1 S Truncated NUREGICR-6697, An. C -0.67 3.16 0.001 0.999 0.51 lognormal-n (Ref. 4)

Th-229+D P 1 S Truncated NUREGICR.6697, At. C 8.68 3.62 0.001 0.999 5884

.______ _lognormal-n (Ref. 4)

Th-230 P 1 5 Truncated NUREG/CR-6697, AU. C 8.68 3.62 0.001 0.999 5884 lognormal-n (Ref. 4) _

U-233 P 1 S Truncated NUREG/CR-6697, Aft. C 4.84 3.13 0.001 0.999 126 lognornal-n (Ref. 4)

U-234 P 1 S Truncated NUREGICR-6697, At. C 4.84 3.13 0.001 0.999 126 lognormal-n (Ref. 4)

II!I Project: Yankee Rowe Ucense Termination Plan

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Calculation No. YA-CALC4O0-001-03 Sheet No. Attachment 2-4 f Il Table I Input Parameters for Sensitivty Analysis, Soil Resident Farmer Scenario U-235+D Parameter (unit)

.ni ntr a t tiioanl of croadni ocneucli des P 1 S 1I_______________

Typo, lpriorityb Treatmente Value/Dlstributlon

{ Truncated l ogno rmal-n Basis NUREG/CR-6697, Aft. C (Ref. 4)

Distribution's Statistical Parameters 8 1

4.84 2

3.13 3

0.001 4

0.999 M edian 126 Initial concentration of radionudides P 3 D 0 Ground water NR NR NR NR present Ingroundwater (pC/I) uncontaminated Calculation Times Time since placement of material (yr) P 3 D o NR NR NR NR Time for calculations (yr) P 3 D 0, 1, 3, 10, 30, RESRAD Defaut NR NR NR NR

_-100, 300, 1000 Contaminated Zone Area of contaminated zone (m^*2) P 2 D 13022 Site-specific- radiation NR NR NR NR control area (Att.l)

Thickness of contaminated zone (m) P 2 S Uniform Minimum equal depth of 0.15 3 1.575 soil mixng layer (0.15m);

maximum equal depth to water

__ __ __ _ __ __ _ __ __ _ table

_I_ (3m) _

Length parallel to aquifer flow (m) P 2 D 129 Site-specfic - diameter of NR NR NR NR circle with an area of 13022 m2 (Att. I)

Cover and Contaminated Zone Hydrological Data Cover depth (m) P 2 D 0 Site-specific - no cover. NR NR NR NR

_ _ _ _ _ _ _ _ _ _ _ _________ __ __la _I__ _ _ _ _ _ _ _ _ _ _ _s s_um ed ___ __ __

Density of contaminated zone p 1 D 1.86 Site-specific loamy sand (g/cm*^3) _ _ _ soil type (Ref. 5)

Contaminated zone erosion rate P 2 D 8.5E-04 Calculated value based NR NR NR NR (my on site-specIfic slope of 2.9% (Att.I) I _ I _I_ _I Contaminated zone total porosity P 2 D 0.35 Site-specific loamy sand NR NR NR NR

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ so _ il_typ

_ e_(R_ef. 5) 1 1 1 _1_1 Contaminated zone field capacity P 3 D 0.10 Site-specific value NR NR NR NR calculated using Equation 4.4 from Ref. I (Aft. 1) _ __ __ _

Contaminated zone hydraulic P 2 D 555 Site-specifi loamy sand NR NR NR NR conductivity (m/y _ __ soIl type (Ref. 5)

Contaminated zone b parameter P 2 D 4.38 Site-specific loamy sand NR NR NR NR I___ _ _ _ _I_

_ _ _ _ _ _ _I_ _ _ _ _ _ _ _ _IIS

_ _ ____ __ __ __ _ Oilt ype (R ef .5 ) 1 ___ ____ 1 _ ___ _ _ 1 __ 1 Humidity in air (gIm'3) P 3 D 6.1 Regional value. (Att. I). NR NR NR NR l

---~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03 I

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil I~~~~~~~~~~~~~~~al Sheet No. Attachment 2-5 I Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Typel Priorityb Treatment Value/listrlbutlon Basis Distribution's Statistical Parametersd

______ _______1 2 3 4 Median Evapotranspiration coefficient P 2 D 0.75 NUREGICR-6697 AtL C, NR NR NR NR

>________ 1distribution (Ref. 4, Att.I)

Average annual wind speed (mise) P 2 D 2.03 Slte-spedfic value calc. NR NR NR NR from site meteorological data (Att.I) _

PrecipKation (mJyr) P 2 D 1.2 Site-specific value NR NR NR NR calculated from sKe geographical area ppt.

(AK .I) -_-

Irrigaton (m/yr) B 3 S Uniform NUREG/CR-6697, AK C 0.252 0.618 NR NR 0.435 methodology,Ref. 4, AK. I Irrigation mode B 3 D Overhead Sfte-specific - overhead NR NR NR NR vs. ditchIrrigation is standard practice in Eastem U. S.

Runoff coofficent P 2 D 0.6 NUREG/CR.6697, AU. C NR NR NR NR section 4.2 methodology

.___ _ _ _ _ _ _ ___ _ ___ _ ___ _ ___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ (Ref. 4. Att .I )

Watershed area for nearby stream or P 3 D 7.77E+05 Ste-speciflc- drainage NR NR NR NR pond (m'2) _ area (Att. I, Ref. 5) _

Accuracy for water/soil computaftons 3 1.OOE-03 RESRAD Defauit NR NR HR NR Saturated Zone Hydrological Data Density of saturated zone (g/cm"3) 1D 2.12 SKte-specific Sandy Loam NR NR NR NR soil type (Ref. 5)

Saturated zone total porosity P 1 D 0.30 Site-specific Sandy Loam NR NR NR NR soil type (Ref.5) _

Saturated zone effecUve porosity P 1 D 0.21 Site-specific Sandy Loam NR NR NR NR

________ _soil type (Ref. 5) _ ___

Saturated zone field capacity P 3 D 0.09 Site-specific value NR NR NR NR calculated using Equation 4.4 from Ref. 1 (At. .)

Saturated zone hydraulic conductivity P 1 D 0.1 Site-specific Sandy Loam NR NR NR NR (mrr) soil type (Ref. 5)

Saturated zone hydraulic gradient p 2 0 0.1 Site gradient (An. I) NR NR NR NR Saturated zone b parameter P 2 D 4.90 SKe-specific Sandy Loam NR NR NR NR

sol type (Ref. 5) _

Water table drop rate (m/yr) P 3 D I 1.00E-03 RESRAD Defaul NR NR NR NR _

I' I-.

Project: Yankee Rowe License Ternination Plan

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Table I Calculation No. YA-CALC-00-001-03 Sheet No. Attachment 2-6 I

I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type" Priorityb Treatmente Value/Dlstributlon Basis DistrIbution's Statistical_Parameterd 1 2 3 4 Median Well pump Intake depth (m below p 2 S Triangular NUREGICR-6697, At. C 6 10 30 14.51 water table ' _ (Ref. 4)

Model: Nondispersion (ND) or Mass- p 3 D ND ND model recommended NR NR NR NR Balance (MB) for contaminant areas >

1,000 m2 (Ref. 1)

Well pumping rate (m**3/yr) P 2 S Uniform Min, Max, median value 957 1689 1323 based on site Irrigation and area and calculated according to NUREG/CR-6697, Att. C section 3.10 method. (Ref. 4, At. I)

Unsaturated Zone Hydrological Data Number of unsaturated zone strata P 3 D I Site-specific value NR NR NR NR Unsat. zone 1, thickness (m) P 1 S Uniform Assumes 0.15 to 3 m 0.01 2.85 1.430 contaminated zone thickness and 3 m depth to-water table _

Unsat zone 1. soil density (g/cmr*3) P 2 D 1.86 Site-specific loamy sand NR NR NR NR soil type (Ref. 5) _ _

Unsat. zone 1, total porosity p 2 0 0.35 Site-specific loamy sand NR NR NR NR soil type (Ref. 5)

Unsat zone 1, effective porosity P 2 D 0.25 Site-specific loamy sand NR NR NR NR soil type (Ref. 5)

Unsat. zone 1, field capacRty p 3 D 0.10 Site-specific value NR NR NR NR calculated using Equation 4.4 (Ref. 1, Unsat. zone 1, hydraulic conductivity p 2 D 555 Site-specific loamy sand NR NR NR NR (m/yr) soil type (Ref. 5) _ _

Unsat zone 1, soil-specific b 2 D 4.38 Sit-specific loamy sand NR NR NR NR parameter soil type (Ref. 5)

Occupancy Inhalation rate (m^*3/yr) B 3 D 8400 NUREGICR-6697, Att C NR NR NR NR (Ref. 4) _ _ _

Mass loading for inhalation (g/m*3) p 2 S Continuous linear NUREGICR-6697, Att. C 2.33E-05 (Ref. 4)

Exposure duration B 3 D 30 RESRAD Defauit NR NR NR NR l Indoor dust filtration factor p 2 S Uniform NUREGICR-6697, Att C 0.15 0.95 0.55 (Ref. 4) _ _ _

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 2-7 r

I Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type' Prlorltyt Treatmente ValuetDlstrlbutlon Basis Distribution's Statistical Parametersd 1 2 3 4 Median Shielding factor, extemal gamma P 2 S Bounded NUREGICR-6697, Aft. C -1.3 0.59 0.0-44 1 0.2725 lognormal-n (Ref. 4)

Fraction of time spent indoors B 3 D 0.6571 NUREGICR-5512, Vol. 3 NR NR NR NR

___________________________ Table 6.87 (R ef. 2)

Fraction of time spent outdoors (on B 3 D 0.1181 NUREG/CR-5512, Vol. 3 NR NR NR NR site) Table 6.87 (outdoors +

gardening) (Ref. 2)

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

+ grain) (Ref. 2) _ _ _

Leafy vegetable consumption (kg/yr) B 3 D 21.4 NUREGICR-5512, Vol. 3 NR NR NR NR

-Ref. 2)

Milk consumption (LUyr) B 2 D 233 NUREG/CR-5512, Vol. 3 NR NR NR NR

_Ref. 2) _

Meat and poultry consumption (kglyr) B 3 D 65.1 NUREGICR55i2, Vol. 3 NR NR NR NR (beef + poultry) (Ref. 2) _

Fish consumption (kg/yr) B 3 D 20.6 NUREG/CR-5512, Vol. 3 NR NR NR NR (Ref. 2)

Other seafood consumption (kg/yr) B 3 D 0.9 RESRAD Delault NR NR NR NR Soil Ingestion rate (glyr) B 2 D 18.26 NUREG/CR-5512, Vol. 3 NR NR NR NR

__ _ __ __ _ __ _ __ _ (Ref. 2)

Drinking water Intake (UJyr) B 2 0 478.5 NUREG/CR-5512, Vol. 3 NR NR NR NR Table 6.87 (Ref. 2)

Contaminaton fraction of drnking P 3 D I RESRAD Default - all NR NR NR NR water water assumed

.__ _ ___ ___ ___ ___ ___ ___ ____ ___ ___conta minate d Contamination fraction of household P 3 HA water (if used)

Contamination fraction of livestock P 3 D I RESRAD Default - all NR NR NR NR water water assumed

_________ _______________ contam inated Contamination fraction of irrigation P 3 D 1 RESRAD Default - all NR NR HR HR water water assumeda contaminate

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03 Il -

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 2-8 T

I Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type' Priorityb Treatment 0 ValuelDistrlbutlon Basis Distribution's Statistical Parametersrd 1 2 3 4 Medlan Contamination fraction of aquatic P 2 D 1 NUREG/CR-5512, Vol. 3 NR NR NR NR food _ (Ref. 2)

Contamination fraction of plant food P 3 D 1 NUREG/CR-5512, Vol. 3 NR NR NR NR I______________________________ __ _ __ __ __ _ (Re f. 2)

Contamination fraction of meat P 3 D I NUREG/CR-5512, Vol. 3 NR NR NR NR

____ ____ _ _ _ _ _ _ _ _ _ __ _ ______ _ __ ____ __ _ _ _ _ _ _ _ _ (Ref. 2) _ _

Contamination fraction of milk P 3 D 1 NUREGICR-5512, Vol. 3 NR NR NR NR I_(Ref. 2) .

Ingestion, Non-Dietary Livestock fodder Intake for meat M 3 D 27.1 NUREGICR5512, Vol. 3 NR NR NR NR (kglday) Table 6.87, beef cattle +

poultry +layer hen (Ref:

2)

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

grain + hay (Ref. 2)

Livestock water Intake for meat M 3 D 50.6 NUREG/CR5512, Vol. 3 NR NR NR NR (1/day) Table 6.87, beef cattle +

poultry + layer hen (Ref.

. ______________ ,2)

Livestock water Intake for milk (Wday) M 3 D 60 NUREG/CR5512, Vol. 3 NR NR NR NR Table 6.87 (Ref. 2)

Livestock soil Intake (kg/day) M 3 D 0.5 RESRAD Default NR NR NR NR Mass loading for follar deposition P 3 D 4.OOE-04 NUREG/CR-5512, Vol. 3 NR NR NR NR (g/m^*3) Table 6.87, gardening (Ref. 2)

Depth of soil mixing layer (m) P 2 S Triangular NUREG/CR-6697, Aft. C 0 0.15 0.6 0.23 (Ref. 4)

Depth of roots (m) P 1 S Uniform NUREG/CR-6697, Att C 0.3 4 2.15 (Ref. 4)

Drinking water fraction from ground P 3 D I RESRAD Defaut - all NR NR NR NR water water assumed to be supplied from

_mroundwater _

Household water fraction from ground P 3 NA water (if used)

I Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Affachment 2-9 I. I Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type' Prlorityb Treatment Value/Dlstribution Basis DistrIbution's Statistical Parametersd 1 2 3 4 Median Livestock water fraction from ground P 3 D I RESRAD Default - anl NR NR NR NR water water assumed to be supplied from roundwater _ _

irrgation fraction from ground water P 3 D 1 RESRAD Defult - all NR NR NR NR water assumed to be supplied from

________ ________________ groundwater Wet weight crop yield for Non-Leafy P 2 S Truncated NUREG/CR-6697, Att. C 0.56 0.48 0.001 0.999 1.75 (kg/m'2) lognormal-n (Ref. 4)

Wet weight crop yield for Leafy P 3 D 2.88921 NUREG/CR-5512. Vol. 3 NR NR NR NR (kg/mI2) Table 6.87 (Ref. 2)

Wet weight crop yield for Fodder P 3 D 1.8868 NUREG/CR-5512, Vol. 3 NR NR NR NR (kg/m*2) Table T 6.87 (Ref. 2)

Growing Season for Non-Leafy P 3 D 0.246 NUREG/CR-5512, Vol. 3 NR NR NR NR years) Table 8.87 (Ref. 2)

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

________ _ Table 6.87 (Ref. 2)

Growing Season for Fodder (years) P 3 D 0.082 NUREG/CR-5512, Vol. 3 NR NR NR NR Table 6.87 (Ref. 2)

Transiocation Factor for Non-Leafy P 3 D 0.1 NUREGICR-5512, Vol. 3 NR NR NR NR

__________________________ Table 6.87 (Ref. 2)

Translocation Factor for Leafy P 3 D 1 NUREG/CR-5512, Vol. 3 NR NR NR NR Table 6.87 (Ref. 2)

Translocation Factor for Fodder P 3 D 1 NUREGICR-5512. Vol. 3 NR NR NR NR Table 6.87 (Ref. 2) ( I Weathering Removal Constant for P 2 S Triangular NUREG/CR-6697, Aft. C 5.1 18 84 33 Vegetation (1/yr) _ (Ref. 4)

Wet Follar Interception Fraction for P 3 D 0.35 NUREG/CR-5512, Vol. 3 NR HR NR NR Non-Leafv Table 6.87 (Ref. 2)

Wet Foliar Interception Fraction for P 2 S Triangular UREG/CR-6697, Att. C 0.06 0.67 0.95 0.58 Leafy (Ref. 4)

Wet Foliar Interception Fraction for P 3 D 0.35 NUREG/CR-5512, Vol. 3 NR NR NR HR Fodder Table 6.87 (Ref. 2)

Dry Follar Interception Fraction for 3 D 0.35 NUREG/CR-5512, Vol. 3 NR HR HR HR Hon-Leafy Table 6.87 (Ref. 2)

HR HR HR~~~~~~~~~~N Dry Foliar Interception Fraction for p 3 D P 3 0.35 D 0.35 NUREG/CR-5512, Vol. 3 NR NR HR Leafy (Re. 2) NR

Project: Yankee Rowe License Terninafion Plan Calculation No. YA-CALC-00-001-03 1

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil p~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Table I Sheet No. Attachment 2-10 lI Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type' Priorityb Treatmente Value/Distrlbution Basis Dlstrlbution's Statistical Parametersd I 2 3 4 Median Dry Follar Interception Fraction for P 3 D 0.35 NUREGICR-5512, Vol. 3 NR NR NR NR Fodder *

(Ref. 2)

Storage times of contaminated foodstuffs (days):

Fruits, non-leafy vegetables, and B 3 D 14 NUREG/CR-5512, Vol. 3 NR NR NR NR grain Table 6.87 (Ref. 2)

Leafy vegetables B 3 D 1 NUREGtCR-5512, Vol. 3 NR NR NR NR Table 6.87 (Ref. 2) _ _

Milk B 3 D I NUREG/CR-5512, Vol. 3 NR NR NR NR Table 6.87 (Ref. 2)

Meat and poultry B 3 D 20 NUREG/CR-5512, Vol. 3 NR NR NR NR Table 6.87 (holdup period for beef) (Ref. 2)

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 I RESRAD Default NR NR NR NR Livestock fodder B 3 D 45 RESRAD Deault NR NR NR NR Special Radionuclides (C-14)

C-1 2 concentration in water P 3 D 2.00E-05 RESRAD Default NR NR NR NR (g/cm"3) I C-12 concentration in contaminated P 3 D 3.OOE-02 RESRAD Default NR NR NR NR soil (gsg) - -

Fraction of vegetation carbon from P 3 D 2.OOE-02 RESRAD Default NR NR NR NR sol Fraction of vegetaton carbon from P 3 D 9.80E-01 RESRAD Default NR NR NR NR air I C-14 evasion layer thickness In soil P 2 S Triangular NUREGtCR-6697, Aft. C 0.2 0.3 0.6 0.36 (m) (Ref. 4)

C-14 evasion flux rate from soil P 3 D 7.OOE-07 RESRAD Default NR NR NR NR (1/sec) - -

C-12 evasion flux rate from soil P 3 D I.OOE-10 RESRAD Default NR NR NR NR (1/sec)

Fraction of grain In beef cattle feed B 3 D 0.2500 NUREG/CR-697, AK. B NR NR NR NR

__ __ _ _ ___ __ ___ _ _ _ _ _ _ _ _ _ _ _ __ _ _ __ _ _ (R ef . 4) __ _ _ _ _ _ _ _ _

Frcinofgan_.ml_o fe 0.1 0 HRH RH Fracfion of grain In milk cow feed B D 0.1000 NUREG/CR-6697, Att. B NR NR NR NR

-- 3 (Ref. 4)

I------

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-O-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 2-11 I.

I Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type Prlortyb Treatment' Value/DstrlbutionJ Basisl Dlstrlbutlon's Statistical Parametersd I I I I 1 I T~ 2 l 3 J 4 Median Dose Conversion Factors (Inhalation mrem/pCI)

Ac-227+D1 M 3 D 6.72E+O0 FGR1 I (RESRAD Dose NR NR NR NR

__________________________ _ __ _ _ _ __ _ _ __ C on versio n L ib rary )

I__

Ag-108m M 3 D 2.83E-04 FGRII NR NR NR NR Am-241 M 3 D 4.44E-01 FGRl1 NR NR NR NR Am-243+D M 3 D 4.40E-01 FGRI1 NR NR NR NR C-14 M 3 D 2.09E-06 FGRII NR NR NR NR Cm-243 M 3 D 3.07E-01 FGRI1 NR NR NR NR Co-60 M 3 D 2.19E-04 FGRII NR NR NR NR Cs-134 M 3 D 4.63E-05 FGR11 NR NR NR NR Cs-137+D M 3 D 3.19E-05 FGRl NR NR NR NR Eu-152 M 3 D 2.21E-04 FGR11 NR NR NR NR Eu-154 M 3 D 2.88E-04 FGRII NR NR NR NR Eu-155 M 3 D 4.14E-05 FGR11 NR NR NR NR Fe-55 M 3 D 2.69E-06 FGR11 NR NR NR NR Gd-152 M 3 D 2.43E-01 FGR1l NR NR NR NR H-3 M 3 D 6.40E-08 FGRI1 NR NR NR NR Mn-54 M 3 D 6.70E-06 FGRII NR NR NR NR Nb-94 M 3 D 4.14E-04 FGR1I NR NR NR NR Ni-59 M 3 D 2.70E-06 FGR11 NR NR NR NR Ni-63 M 3 D 6.29E-06 FGRI1 NR NR NR NR Np-237+D M 3 D 5.40E-01 FGRII NR NR NR NR Pa-231 M 3 D 1,28E+00 FGRl1 NR NR NR NR Pb-210+D M 3 D 1.38E-02 FGRII NR NR NR NR Pu-238 M 3 D 3.92E-01 FGRI NR NR NR NR Pu-239 M 3 D 4.29E-01 FGR11 NR NR NR NR Pu-241i+D M 3 0 8.25E-03 FGR1I NR NR NR NR Ra-226+1D M 3 D 8.60E-03 FGR1I NR NR NR NR Ru-106 M 3 D 4.77E-04 FGR11 NR NR NR NR _

Sb-125 M 3 D 1.22E-05 FGR1I HR NR NR NR _

Sr-90+D M 3 D 1.31E-03 FGRII HR NR NR HR ;

Project: Yankee Rowe License Terminatlon Plan Calculation No. YA-CALC-00-001-03 I

S.- 7

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 2-12 U.

-I Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type' Priorityb Treatmente Value/lDistrlbution Basis Distributions Stati stical Parameters d

.__ _ _ __ _ _ __ _ _ __ _ _ __ _ __ _ _ __ _ _____ _ _ __ _ __ __ _ __ _ __ _ _ _ _ _ __ _ _ _ _ _ __ _ _ _ _ 1 2 3 4 M edian TC-99 M 3 D 8.33E-06 FGRII NR NR NR NR Th-229+D M 3 D 2.16E+00 FGR11 NR NR NR NR Th-230 M 3 D 3.26E-01 FGRI1 NR NR NR NR U-233 M 3 D 1.35E-01 FGRI I NR NR NR NR U-234 M 3 D 1.32E-01 FGRI I NR NR NR NR U-235+D M 3 D 1.23E-01 FGR1I1 NR NR NR NR Dose Conversion Factors flngestlon mremIpCi)

Ac-227+D M 3 D 1.48E-02 FGRlI (RESRAD Dose NR NR NR NR Conversion Library) _

Ag-108m M 3 D 7.62E-06 FGRl1 NR NR NR NR Am-241 M 3 D 3.64E-03 FGRI I NR HR HR HR Am-243+D M 3 D 3.63E-03 FGRI I NR NR NR NR C-14 M 3 D 2.09E-06 FGRII NR NR NR NR Cm-243 M 3 D 2.51 E-03 FGRI 1 NR NR NR NR Co-60 M 3 D 2.69E-05 FGRI1 NR NR NR NR Cs-134 M 3 D 7.33E-05 FGR11 NR NR NR NR Cs-137+D M 3 D 5.OOE-05 FGRII NR NR NR NR Eu-152 M 3 D 6.48E-06 FGRI1 NR NR NR NR Eu-154 M 3 D 9.55E-06 FGRII NR NR NR NR Eu-155 M 3 D 1.53E-06 FGRII NR NR NR NR Fe-55 M 3 D 6.07E-07 FGR1I1 NR NR NR NR Gd-152 M 3 D 1.61 E-04 FGR11 NR NR NR NR H-3 M 3 D 6.40E-08 FGR 1H NR NR NR NR Mn-54 M 3 D 2.77E-06 FGRII NR NR NR NR Nb-94 M 3 D 7.14E-06 FGRI H NR NR NR NR Ni-59 M 3 0 2.10E-07 FGR1i NR NR NR NR Ni-63 M 3 D 5.77E-07 FGRII NR NR NR NR Np-237+D M 3 D 4.44E-03 FGRII NR NR NR NR Pa-231 M 3 D 1.06E-02 FGRII NR NR NR NR Pb-210+D M 3 D 5.37E-03 FGR1I NR NR NR NR Pu-238 M 3 D 3.20E-03 FGR1 1 NR NR NR NR

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil I

I Sheet No. Attachment 2-13 I

Table 1 Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) I Typea Pr-ority I Treatment ValuelDlsMbutlonj Basis I Dlstributlon's Statistical Paramnetersd 1

I _ I I I _ _I_ I 2 3 4 Median Pu-239 M 3 1 D 3.54E.03 FGRlI I NR NR I HR NR Pu-241+D

• M 3 D 6.85E-05 FGR11 NR NR NR NR Ra-226+D M 3 D 1.33E-03 FGR11 NR NR NR NR Ru-108 M 3 D 2.74E-05 FGR11 NR NR NR NR Sb-125 M 3 D 2.81E-08 FGR1I NR NR NR NR Sr-90+D M 3 D 1.53E-04 FGRII NR NR NR NR Tc-99 M 3 D 1.46E-08 FGRI1 NR NR NR NR Th-229+D M 3 D 4.03E-03 FGR1I NR NR NR NR Th-230 M 3 D 5.48E-04 FGRII NR NR NR NR U-233 M 3 D 2.89E-04 FGRI1 NR NR NR NR U-234 M 3 D 2.83E-04 FGRII NR NR NR NR U-235+D M 3 D 2.67E-04 FGRII NR NR NR NR Plant Transfer Factors (pCli/ plant)I(pClIg soil)

Ac-227+D P 1 S Truncated NUREG/CR-6697, Att. C -6.91 1.1 0.001 0.999 1.OE-03 lognormal-n (Ref. 4)

Ag-108m I S Truncated NUREG/CR-6697, Att. C -5.52 0.9 0.001 0.999 4.OE-03 lognormai-n (Ref. 4)

Am-241 P 1 S Truncated NUREG/CR-6697, At. C -6.91 0.9 0.001 0.999 1.0E-03 lognormal-n (Ref. 4)

Arn-243+D P 1 S Truncated NUREGICR-6697, Att. C -6.91 0.9 0.001 0.999 1.OE-03 lognormal-n (Ref. 4)

C-14 P 1 S Truncated NUREG/CR-6697, Att. C -0.38 0.9 0.001 0.999 7.OE-01 lognormal-n (Ref. 4)

Cm-243 P 1 S Truncated NUREG/CR-6697, At. C -8.91 0.9 0.001 0.999 1.OE-03

_lonormal-n (Ref. 4) I Co-60 P 1 S Truncated NUREG/CR-6697, AtL C -2.53 0.9 0.001 0.999 8.OE-02 lognorma (Ref. 4)

Cs-134 P 1 S Truncated NUREG/CR-6697, At. C -3.22 1.0 0.001 0.999 4.OE-02

_____________________________ _ ________ lognormal-n (Ref. 4) __

Cs-137+D P 1 S Truncated NUREG/CR-6697, AtL C -3.22 1.0 0.001 0.999 4.OE-02 lognormain (Ref. 4) _

Eu-152 P 1 S Truncated NUREG/CR.6697, AtL C -6.21 1.1 0.001 0.999 2.OE-03 lognormal-n (Ref. 4)

Eu-154 P 1 S Truncated NUREGICR-6697, Att. C -6.21 1.1 0.001 0.999 2.OE-03 bg__notrmal-n (Ref. 4)

I

Project: Yankee Rowe Ucense Termination Plan Il

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Calculation No. YA-CALC-00-001-03 Sheet No. Attachment 2-14 Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Type' Priority Treatmente Value/Distrlbution Basis Distribution's Statistical Parametersd 1 2 3 4 Median Eu-1 55 P 1 S Truncated NUREGICR-6697, Aft. C -6.21 1.1 0.001 0.999 2.OE-03 Fe-55 _____ _ loanormal-n (Ref. 4)

P 1 S Truncated NUREG/CR-6697, Att. C -6.91 0.9 0.001 0.999 1.OE-03 Gd-152 lognormal-n (Ref. 4) 1 S Truncated NUREG/CR-6697, Aft. C -6.21 1.1 0.001 0.999 2.OE-03 H-3 loqnormal-n (Ref. 4)

P 1 S Truncated NUREGICR-6697, Aft. C 1.57 1.1 0.001 0.999 4.8E+00 Mn-54 lognormal-n (Ref. 4)

P 1 $ Truncated NUREGICR-6697, At. C -1.20 0.9 0.001 0.999 3.OE-01

_ _ _ _ _ __ lognormal-n (Ref. 4)

Nb-94 P 1 5 Truncated NUREGICR-6697, Att C -4.61 1.1 0.001 0.999 1.OE-02 NI-59 2lonormal-n Ref 4)

P 1 S Truncated NUREG/CR-6697, Att. C -3.0 0.9 0.001 0.999 5.OE-02 NI-63 lognorrnal-n (Ref. 4) p I Truncated NUREG/CR-6697, Aft. C -3.0 0.9 0.001 0.999 5.OE-02 Np-237+D lognormal-n (Ref. 4)

P 1 S Truncated NUREGICR-6697, Att. C -3.91 0.9 0.001 0.999 2.OE-02 Pa-231 lognormal-n (Ref.

4)

P 1 S Truncated NUREG/CR-6697, Att. C -4.61 1.1 0.001 0.999 .. OE-02 Pb-210+D lognormal-n (Ref. 4)

P 1 S Truncated NUREGICR-6697, Aft. C -5.52 0.9 0.001 0.999 4.OE-03 Pu-238 2ognormal-n (Ref. 4)

P 1 S Truncated NUREGICR-6697, Att. C -6.91 0.9 0.001 0.999 1.OE-03 Pu-239 I_normal-n (Ref. 4)

S Truncated NUREG/CR-6697, Att. C -6.91 0.9 0.001 0.999 1.OE-03 lognofmaln (Ref. 4) _

Pu-241+D P 1 S Truncated NUREGICR-6697, Att. C -6.91 0.9 0.001 0.999 . .OE-03 lognormal-n (Ref. 4)

Ra-226+D P 1 S Truncated NUREGtCR-6697, Att. C -3.22 0.9 0.001 0.999 4.OE-02 Ru-106 lonormal-n (Ref. 4)

P 1 S Truncated NUREGICR-6697, AUt. C -3.51 0.9 0.001 0.999 3.OE-02 Sb-125

_ _ _ _ _ _ __lognormal-n (Ref. 4)

P 1 S Truncated NUREGtCR-6697, Aft. C -4.61 1.0 0.001 0.999 1 .OE-02

_ _ _ _ _ lognormrnl-

__ _ (Ref. 4)

Sr-90+ D P 1 S Truncated N UREGICR-6697, Att C -1.20 1.0 0.001 0.999 3.0E-01 TC-99

_______ _________hgn___ Ionnal- aln (Re f.4)4)_______ ___lognormal_n_ _R_f__4 P 1 1 Tr uncat ed NUR EG /CRt6 697 , A tt.C 1.61 0.9 010.0 0.9 995.0E+OO logn__ _ e

__lognormal-n (Ref 4)_ I

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03 I

Subject:

RESRAD 6.21 Sensitivity Anaiysis for Soil r-- ~~~~~~~~~T---

Sheet No. Attachment 2-15 I

Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario

-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Parameter (unit) Type' Priorityb Treatmente ValuelDlstrlbution Basis Dlstrlbution's Statistical Pararneters _

__ _ __ _ _ __ _ _ __ _ _ _ _ _ _ _ _ _ _ ___ ___ _ _ _ _ _ __ __ ___ _ _ __I_ _ _ _ _ _ _ _ __ 1 2 3 4 M ed ia n Th-229+D P 1 s Truncated NUREGICR-6697, Att. C -6.91 0.9 0.001 0.999 1.OE-03

__ _ _ __ __ __ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ __ _ __ _ l log n o rm a n (R e f. 4 )

Th-230 P 1 S Truncated NUREG/CR-6697, AU. C -8.91 0.9 0.001 0.999 1.0E.03 lognormal-n (Ref. 4)

U-233 P 1 S Truncated NUREGICR-6697, Aft. C -8.21 0.9 0.001 0.999 2.OE-03 I____________ __lognorm

___________ ____ al-n (R ef. 4)

U-234 P 1 S Truncated NUREGICR-6697, AU. C -8.21 0.9 0.001 0.999 2.OE-03

_______ lognormal-n (Ref. 4)

U-235+D P 1 S Truncated NUREGICR-6697, Att. C -6.21 0.9 0.001 0.999 2.0E-03

_ ___________________ _ - - _______ lognorm al-n (Ref. 4)

Meat Transfer Factors (pCi/kg)/(pCId)

Ac-227+D P 2 S Truncated NUREG/CR-6697, AK. C -10.82 1.0 0.001 0.999 2.OE-05 lognormal-n (Ref. 4)

Ag-108m P 2 S Truncated NUREG/CR-6897, Att C -6.21 0.7 0.001 0.999 2.OE-03 lognormal-n (Ref. 4)

Am-241 P 2 S Truncated NUREG/CR-6697, Aft. C -9.90 0.2 0.001 0.999 5.OE-05 lognormnal-n (Ref. 4)

Am-243+D P 2 S Truncated NUREG/CR-6697, Aft. C -9.90 0.2 0.001 0.999 5.OE-05 lognormaln (Ref. 4)

C-14 P 2 S Truncated NUREG/CR-6697, Att. C -3.47 1.0 0.001 0.999 3.1E-02

_____________ ______________ loanorm ai-n (Ref. 4) _

Cm-243 P 2 5 Truncated NUREG/CR-6697. Att C -10.82 1.0 0.001 0.999 2.OE-05 lognormal-n (Ref. 4)

Co-0 P 2- S Truncated NUREGICR-6697, Att. C -3.51 1.0 0.001 0.999 3.OE-02 lognormal-n (Ref. 4)

Cs-134 P 2 S Truncated NUREG/CR-6697, Att. C -3.00 0.4 0.001 0.999 5.OE-02 lognormal-n (Ref. 4)

Cs-137+D 2 S Truncated NUREG/CR46697, Att. C -3.00- 0.4 0.001 0.999 5.OE-02 lognornal-n (Ref. 4)

Eu-152 P 2 S Truncated NUREG/CR-6697, Att. C -8.21 1.0 .0.001 0.999 2.OE-03 lognormaI-n (Ref. 4)

Eu-I 54 P 2 S Truncated NUREG/CR-6897, Att. C -6.21 1.0 0.001 0.999 2.OE-03

__ _ _ _ __ _ _ _ __ _ _ _ __ _ _ _ __ _ _ _ __ _ _ _ _ _ _ ___ Iog no rmal-n (Ref. 4)

Eu-155 P 2 5 Truncated NUREG/CR4697, Att. C -6.21 1.0 0.001 0.999 2.OE-03

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ____ __________ lognorm al-n (R ef. 4)

Fe-55 P 2 S Truncated NUREGICR-6697, At. C -3.51 0.4 0.001 0.999 3.OE-02

__ __ __ __ __ __ _ __ __ _ __ _ __ __ _ _ _ _ __ __ _ __ ognor mt-a n (Re f. 4) _ _ _ _ _ _ _

Project: Yankee Rowe License Terrnination Plan Calculation No. YA-CALC-OI-0013 I

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment2-16 a-I Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type Priorityb Treatment Value/Dlstributlon Basis Distribution's Statistical Parametersd 1 2 3 4 Median Gd-152 P 2 S Truncated NUREGICR-6897, AK. C -6.21 1.0 0.001 0.999 2.OE-03 bgnormal-n (Ref. 4) .

H-3 P 2 S Truncated NUREG/CR-6697, Att. C -4.42 1.0 0.001 0.999 1.2E-02 lognormai-n (Ref. 4)

Mn-54 P 2 S Truncated NUREGICR-6697, At. C -8.91 0.7 0.001 0.999 1.OE-03 lognornal-n (Ref. 4)

Nb-94 P 2 S Truncated NUREGICR-6697, AK. C -13.82 0.9 0.001 0.999 1.0E-06 lognormai-n (Ref. 4)

NI-59 P 2 S Truncated NUREG/CR-6697, AU. C -5.30 0.9 0.001 0.999 5.OE-03 lognornai-n (Ref. 4)

NI-63 P 2 S Truncated NUREG/CR-6697, AU.C -5.30 0.9 0.001 0.999 5.OE-03 lognormal-n (Ref. 4)

Np-237+D P 2 S Truncated NUREG/CR-6697, AK. C -8.91 0.7 0.001 0.999 1.01E-03 lognormal-n (Ref. 4)

Pa-231 P 2 S Truncated NUREG/CR-6697, AUt. C -12.21 1.0 0.001 0.999 5.0E-06 2ognormal-n (Ref. 4)

Pb-210+D P 2 S Truncated NUREGICR-6697, Aft. C -7.13 0.7 0.001 0.999 8.OE-04 lognormal-n (Re£ 4)

Pu-238 P 2 S Truncated NUREG/CR-6697, AUt. C -9.21 0.2 0.001 0.999 1.OE-04 lognormal-n (Ref. 4)

Pu-239 P 2 S Truncated NUREG/CR-6697, Aft. C -9.21 0.2 0.001 0.999 i.OE-04 lognormal-n Ref. 4)

Pu-241+D P 2 S Truncated NUREG/CR-6697, Att. C -9.21 0.2 0.001 0.999 1.OE-04 lognormal-n (Ref. 4)

Ra-226+D P 2 S Truncated NUREG/CR-6697, Att. C -6.91 0.7 0.001 0.999 1.OE-03 lognofnal-n (Ref. 4)

Ru-i06 P 2 S Truncated NUREG/CR-6697, AUt. C -6.21 0.9 0.001 0.999 2.OE-03 lognormal-n Ref. 4) ___

Sb-125 P 2 S Truncated NUREG/CR-6697, AU.C -6.91 0.9 0.001 0.999 1.OE-03 h_gnormal-n (Ref. 4)

Sr-90+D P 2 S Truncated NUREG/CR-6697, AUt. C -4.61 0.4 0.001 0.999 1.OE-02 loQnornmal-n (Ref. 4)

Tc-99 P 2 S Truncated NUREG/CR-6697, AU.C -9.21 0.7 0.001 0.999 1.OE-04

___________________________ ______ _________ Iogno rm og rm al-nn_Rf (R ef. 4

4) _______

Th-229+D p 2 S Truncated NUREGICR-B697, AU. C -9.21 1.0 0.001 0.999 1.OE-04

.__ ___ ___ ____ ___ ___ __ lognormal-n (Ref. 4)

Th-230 P 2 S Truncated NUREG/CR-6697, At. C -9.21 1.0 0.001 0.999 1.OE-04

_ __ _ _ __ __ __ __ _ _ __ __ _ _ _ _ __ __ _ _ __ _ _ __ _ __ _ logno nma l-n (Ref. 4) _ _ _ _

Project: Yankee Rowe License Termination Plan Calculaton No. YA-CALC-00-001-03 I

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment2-17 I

Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type' Priorityb Treatnent0 ValuetDhstributlon Basis Dlstrilbution's Statistical ParaMetersd

________ ______________ 1 2 3 4 Median U-233 P 2 S Truncated NUREG/CR-6697, Att. C -7.13 0.7 0.001 0.999 8.OE-04 lonormaln (Ref. 4) . -

U-234 P 2 S Truncated NUREGICR-6697, Aft. C -7.13 0.7 0.001 0.999 8.OE-04

-lognormal-n (Ret. 4) --

U-235+D P 2 S Truncated NUREGtCR-6697, Att. C -7.13 0.7 0.001 0.999 8.0E-04 lonormral-n (Ref. 4)

Milk Transfer Factors (pCUL)/(pCild)

Ac-227+D P 2 S Truncated NUREGtCR-6697, Aft. C -13.12 0.9 0.001 0.999 2.OE-06 lognormal-n (Ref. 4)

Ag-I108m P 2 S Truncated NUREG/CR-6697, An. C -5.12 0.7 0.001 0.999 6.OE-03 lognormal-n (Ref. 4)

Am-241 P 2 S Truncated NUREGtCR-6697, Alt. C -13.12 0.7 0.001 0.999 2.OE-06 lognorrnal-n (Ref. 4)

Am-243+D P 2 S Truncated NUREGtCR-6697, Aft. C -13.12 0.7 0.001 0.999 2.0E-06 lognormal-n (Ref. 4)

C-14 P 2 S Truncated NUREG/CR 6697, Att. C -4.4 0.9 0.001 0.999 1.2E-02 lognormal-n (Ref. 4)

Cm-243 P 2 S Truncated NUREG/CR-6697, Att. C -13.12 0.9 0.001 0.999 2.OE-06 lognormal-n (Ref. 4)

Co-60 P 2 S Truncated NUREGICR-6697, AUt. C -6.21 0.7 0.001 0.999 2.OE-03 lognormal-n (Ref. 4)

Cs-134 P 2 S Truncated NUREG/CR-6697, AUt. C -4.61 0.5 0.001 0.999 1.OE-02 lognormal-n (Ref. 4)

Cs-137+D P 2 S Truncated NUREG/CR-6697, Aft. C -4.61 0.5 0.001 0.999 1.OE-02 bgnormal-n (Ref. 4)

Eu-I 52 P 2 S Truncated NUREG/CR-6697, Aft. C -9.72 0.9 0.001 0.999 6.OE-05 lognormalkn (Ref. 4)

Eu-154 P 2 S Truncated NUREG/CR-6697, Aft. C -9.72 0.9 0.001 0.999 6.OE-05 lognormai-n (Ref. 4)

Eu-155 P 2 S Truncated NUREGtCR-6697, Att. C -9.72 0.9 0.001 0.999 6.0E-05 lognormal-n (Ref. 4)

Fe-55 P 2 S Truncated NUREG/CR.6697, At. C -8.11 0.7 0.001 0.999 3.OE-04 lognormna-n (Ref. 4)

Gd-152 P 2 S Truncated NUREGICR-6697, Att. C -9.72 0.9 0.001 0.999 6.OE-05 ognormal-n (Ref. 4)

H-3 P 2 S Truncated NUREG/CR-6697, AUt. C -4.6 0.9 0.001 0.999 1.OE-02 lognormal-n (Ref. 4) . -

- l~~~~~~~---

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03 I r-

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 2-18 I

Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type prdodtyb Treatmente ValuelDistrlbutlon Basis Dlstributlon's Statistical Parametersd 1 2 3 4 Median Mn-54 P 2 S Truncated NUREGICR-6697, At. C -8.11 0.7 0.001 0.999 3.OE-04 normai-n

_ _ __ _ (Ref. 4)

Nb-94 P 2 S Truncated NUREG/CR-6697, AK. C -13.12 0.7 0.001 0.999 2.OE-06 lognommal-n (Ref. 4)

Ni-59 P 2 S Truncated NUREG/CR-6697, AK. C -3.91 0.7 0.001 0.999 2.OE-02 iognormar-n (Ref. 4)

NF63 P 2 S Truncated NUREG/CR-6697, Att. C -3.91 0.7 0.001 0.999 2.OE-02 lognoinal-n (Ref. 4)

Np-237+D P 2 S Truncated NUREG/CR-6697, AtK C -11.51 0.7 0.001 0.999 1.OE-05 lognormsan (Ref. 4) . -

Pa-231 P 2 S Truncated NUREG/CR-6697, AU. C -12.21 0.9 0.001 0.999 5.0E-06

__________ lognorma n (Ref. 4) . -

Pb-210+D P 2 S Truncated NUREG/CR-6697, AK. C -8.11 0.9 0.001 0.999 3.OE-04 lognormal-n (Ref. 4)

Pu-238 P 2 S Truncated NUREGICR-6697, At. C -13.82 0.5 0.001 0.999 1.OE-06

_________ lognonnal-n (Ref. 4)

Pu-239 P 2 S Truncated NUREG/CR-6697, Ad. C -13.82 0.5 0.001 0.999 1.OE-06 iognormah (Ref. 4)

Pu-241+D P 2 S Truncated NUREGICR-6697, AU. C -13.82 0.5 0.001 0.999 1.OE-06 lognoffal-n (Ref. 4)

Ra-226+D P 2 S Truncated NUREG/CR-6697, AU. C -6.91 0.5 0.001 0.999 1.OE-03 lognormat-n (Ref. 4)

Ru-106 P 2 S Truncated NUREGICR.6697. AK. C -10.82 0.6 0.001 0.999 2.OE-05 iognorma1-n (Ref. 4)

Sb-125 P 2 S Truncated NUREG/CR-6697, AtK C -9.72 0.9 0.001 0.999 6.OE-05 lognornal-n (Ref. 4) .

Sr-90+D P 2 S Truncated NUREG/CR-6697, AU. C -6.21 0.5 0.001 0.999 2.OE-03

____ lognormal-n (Ref. 4L -- - -

Tc-99 P 2 S Truncated NUREG/CR-6697, AU. C -6.91 0.7 0.001 0.999 1.OE-03 lognormal-n (Ref. 4)

Th-229+D P 2 S Truncated NUREG/CR-6697, AK. C -12.21 0.9 0.001 0.999 5.OE-08

_____________________________ _________ lognorma 1-n (Ref. 4)

Th-230 P 2 S Truncated NUREGICR-6697, AK.C -12.21 0.9 0.001 0.999 5.OE-06 lognormna-n (Ref. 4)

U-233 P 2 S Truncated NUREG/CR-6697, At. C -7.82 0.6 0.001 0.999 4.OE-04 lognormal-n (Ref. 4)

U-234 U-234 pP 2 S_ -7.8 0. 0.00 .9 .

2 s Truncated NUREGICR-6697, AtU.C I -7.82 0.6 0.001 l4.015-04 lognormal-n (Ref. 4) 0.999

• ~~~~~~~~~~~~~~~~

Project: Yankee Rowe License Ternination Plan Calculatlon No. YA-CALC-00-001-03 I

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 2-19 I

T -

Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type' Priorityb Treatment' Value/Distribution Basis Distribution's Statlstical Parameterad

_ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1~~~ 2 ~ 1~3 ~ ~ ~4 ~ ~ Median

~~~~~

U-235+1D P 2 S Truncated NUREG/CR-6697, Att. C -7.82 0.6 0.001 0.999 4.0E-04

- . - - . Iognormal-n (Ref. 4)

Bloaccumulation Factors for Fish ((pCl/kg)I(pCUL))

Ac-227+D P 2 S Lognormal-n NUREGICR-6697, AK. C 2.7 1.1 1.5E+O1 Ag-108m__ 2_S_Lognormal-n (Ref. 4) _

Ag-108m P 2 S Lognormal-n NUREGICR-6697, Aft. C 1.6 1.1 5.OE+00

_______ ______ (Ref. 4)

Am-241 P 2 S Lognormal-n NUREG/CR-6697, Aft. C 3.4 1.1 3.0E+01 C-14_________________ __ 2_S_Lognormal-n_ NURRef. 41 Am-243+D P 2 S Lognorrnal-n NUREG/CR-6697, Aft. C 3.4 1.1 3.OE+01 C-14 P 2 5 Lognormal-n NUREG/CR-6697, Aft. C 10.8 1.1 4.0E+04 (Ref. 4)

Cm-243 P 2 S Lognormal-n NUREG/CR-6697, Aft. C 3.4 1.1 3.OE+01

__ __ _ __ __ _ __ __ _ __ _ _ _ _ _ _ _ _ _ _ ______________ ~~~(R ef. 4)_ _ _ _ _

C0-60 P 2 S Lognormal-n NUREGICR-6697, At. C 5.7 1.1 3.OE+02

________________________ ~~~~~~~~~~

4) _~~(Ref.

Cs-134 P 2 S Lognormal-n NUREG/CR-6697, Att. C 7.6 0.7 2.0E+03 (Ref. 4)

Cs-1374D P 2 S Lognormal-n NUREG/CR-6697, Att. C 7.6 0.7 2.E1+03 (Ref. 4)

Eu-152 P 2 S Lognormal-n NUREG/CR-6697, Att. C 3.9 1.1 4.9E+01

________ ~~~~~(Ref.

4)_ _ _ _ _

Eu-i 54 P 2 S Lognormal-n NUREGICR-6697, Aft. C 3.9 1.1 4.9E+01

_________ ~~~~(Ref.

4) _ _ _ __ _ _ _

Eu-I 55 P 2 S Lognormal-n NUREG/CR-6697, Att. C 3.9 1.1 4.9E+01

_______ ______ (R ef. 4)_ _ _ __ _ _ _ _ _

Fe-55 P 2 S Lognorrnal-n NUREGICR-6697. Aft. C 5.3 1.1 2.0E+02

_ __ _ __ _ __ _ _ __ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ __ _ _ __ (R ef. 4)_ _ _ _ _ _ _ _ _

Gd-I52 P 2 S Lognormal n NUREG/CR4697, AUt. C 3.2 1.1 2.0E+01 (Ref. 4)

H-3 P 2 S Lognormal-n NUREG/CR-6697, Aft. C 0 0.1 1.OE+00

_ __ _ _ _ _ _ _ _ _ _ __ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ~~~(R ef. 4)_ _ _ _ _ _ _ _

Mn-54 P 2 S Lognormal-n NUREGICR-6697, Att. C 6 114.OE402

__ __ __ _ _ _ __ __ __ _ _ _ _ _ _ _ _ __ _ __ __ _ _ __ _ __ __ _ __ _ __ _ (R ef. 4 )_ _ _ _ _ _ _ _ _

---

I Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03 Il Il

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 2-20 I Table I Input Parameters for Sensitivity Analysis, Soil Resident Farner Scenario Parameter (unit) Type' Priorityb Treatmente Value/Distribution Basis Dlstributlon's Statistical ParameterMd 1 2 3 4 Median Nb-94 P 2 S Lognormai-n NUREGICR-6697, Att. C 5.7 1.1 3.OE+02

_ _ _ _ _ _ __ _ __ __ __ _ __ __ ~~~~(R ef. 4 )

Ni-59 P 2 S Lognormal-n NUREGICR-6697, Att. C 4.6 1.1 9.9E+01

__ __ _ __ _ _ _ _ _ _._ _ _ __ _ _ _ _ ( e. 4 ,__ ___

Ni-63 P 2 S Lognormal-n NUREG/CR-6697. Att. C 4.6 1.1 9.9E+01

_Ref. 4)

Np-237+D P 2 S Lognormal-n NUREG/CR.6697, Att. C 3.4 1.1 3.0E+01

_ __ __ __ _ __ __ __ _ _ __ _ _ ___ __ _ _ _ _ _ _ __ _ __ _ _ _ _ _ __ __ __ _ __ _ (Re f . 4 )

Pa-231 P 2 S Lognormal-n NUREG/CR-6697, AtL C 2.3 1.1 1.OE+01

_ _ __ _ _ _ __ _ _ _ __ _ _ __ _ _ _ __ _ _ _ _ _ _ _ _ __ _ __ __ _ _ _ _ _ _ _ _ _ _ _ __I (Ref . 4)

Pb-210+D P 2 S Lognormal-n NUREG/CR-6697, Ati C 5.7 1.1 3.0E+02 Pu-238 __ ___ ___ __ ___ __ P_____________ 2 S Lognorrnai n sI(Ref.4)

Pu-238 P 2 S Lognormal-n NUREG/CR-6697, Att. C 3.4 1.1 3.OE+01

_ ___ __ __ _ _ __ __ __ _ _ _ __ __ __ _ __ __ _ _ _ __ __ __ __ _ __ _ (Re f. 4 ) _ _ _ _ _ _ _ _ _ _ _ _ _

Pu-239 P 2 S Lognormal-ri NUREG/CR-6697, Aft. C 3.4 1.1 3.OE+01

___ __ __ __ __ __ _ _ _ _ _ _ __ __ __ __ _ _ __ __ _ __ __ __ __ _ ~(Ref . 4)

Pu-241+D P 2 S Lognormal-n NUREG/CR-6697, Att. C 3.4 1.1 3.OE+01 Ru-106_P_2_S_Lognormai-n___________ 4)2.0E+01 Alt C 3.0 1.1 _(Ref.

Ra-22651 P 2 S Lognormal-n NUREG/CR-6697, Aft. C 3,9 1.1 4.9E+01 (Ref. 4)

Ru-106 P 2 S Lognormal-n NUREGICR-6697, Att. C 3.0 1.1 2.0E+01 Th-229+D_

S P Lonoman (Ref. 4) 4. _11_.9+0 Sb-125 P 2 S Lognormal-n NUREG/CR-6697, Aut. C 4.6 1.1 9.9E+01

_ _ __ _ __ _ __ _ __ _ __ _ _ _ _ _ _ _ _ _ _ _ __ ___ ___ ~~~e~~~(R f . 4) _ _ _ _ _

Sr-90+D P 2 S Lognormal-n NUREGICR-6697, Att. C 4.1 1.1 6.OE+01

__ __ _ _ _ _ ~~~ef.~~(R 4 )_ _ _ _ _ _ _ _ _ _ _ _ _

TU-99 P 2 S Lognormai-n NUREG/CR-6697, At. C 3 1.1 2.0E+01

_ ___ __ _ _ __ _ __ __ __ _ _ _ _ _ _ _ _ _ _ __ __ __ __ _ __ _ ~~~~(R ef . 4 )_ _ _ _ _ _ _ _ _

Th-229+D P 2 5 Lognormal-n NUREG/CR-6697, At. C 4.6 1.1 9.9E+01

.__ _ _ _ _ _ ____ _ _____ _ ____ _ _ _ (_R e _f ._4_) - _

Th-230 P 2 S Lognormal-n NUREGICR-8697, Alt. C 4.6 1.1 9.9E+01

_ _ __ __ _ _ _ _ _ _ _ (Re t. 4) _ _ _

U-233 P 2 5 Lognormal-n NUREG/CR-6697, Alt. C 2.3 1.1 1.0E+01

_ _ _ _ _ __ _ _ _ _ _ _ _ _ __ __ _ __ __ __ __ (R ef . 4)_ _ _ _

U-234 P 2 S Lognormal-n NUREGICR..697, Alt. C 2.3 1.1 1.0E.01

__ __ _ _ _ __ __ __ __ _ _ __ __ _ __ __ _ _ __ _ _ _ __ __ __ __ __ __ _ (R ef . 4)_ _ _ _ _

U-235+D P 2 S Lognormal-n NUREGICR-6697, AltL C 2.3 1.1 1.05+01

__ __ __ _ _ _ __ __ __ __ _ __ _ __ __ __ _ _ _ _ _ _ _ _ _ _ __ __ _ __ __ __ _ (R ef. 4)_ _ _ __ _ _ _

I Project: Yankee Rowe License Termination Plan

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Calculation No. YA-CALC-00-001-03 Sheet No. Attachment 2-21 I

Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Types IPriorityb ITreatmente Value/Distrlbutionr Basis Distribution's Statistical Paramemersd l I I I1 2 3 4 Median Bioaccumulation Factors for Crustaceal Mollusks ((pClI/kg)l(pCI/L))

Ac-227+D P 3 D 1.00E+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 1.00E+03 RESRAD DefauKt NR NR NR NR Am-243+D P 3 D 1.00E+03 RESRAD Default NR NR NR NR C-14 P 3 D 9.10E+03 RESRAD Default NR NR NR NR Cm-243 P 3 D 1.00E+03 RESRAD Defaut NR NR NR NR Co-60 p 3 D 2.00E+02 RESRAD Defaul NR NR NR NR Cs-134 P 3 D 1.00E+02 RESRAD Default NR NR NR NR _

Cs-I37+D P 3 D 1.00E+02 RESRAD Default NR NR NR NR Eu-152 P 3 D 1.00E+03 RESRAD Default NR NR NR NR Eu-I 54 P 3 D 1.OOE+03 RESRAD Default NR NR NR NR Eu-155 P 3 D 1.00E+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 1.00E+03 RESRAD Default NR NR NR NR H-3 P 3 D 1.00E+00 RESRAD Default NR NR NR NR Mn-54 P 3 D 9.OOE+04 RESRAD Default NR NR NR NR Nb-94 P 3 D 1.00E+02 RESRAD Default NR NR NR NR NW59 P 3 D 1.OOE+02 RESRAD Defult NR NR NR NR Ni-63 P 3 D 1.00E+02 RESRAD Defaul NR NR NR NR Np-237+D P 3 D 4.00E+02 RESRAD Default NR NR NR NR Pa-231 P 3 D 1.10E+02 RESRAD Default NR NR NR NR Pb-210+D P 3 D 1.00E+02 RESRAD DefauK NR NR NR NR Pu-238 P 3 D 1.00E+02 RESRAD Default NR NR NR NR Pu-239 P 3 D 1.00E+02 RESRAD Default NR NR NR NR Pu-241+D P 3 D 1.00E+02 RESRAD Default NR NR NR NR Ra-226+D P 3 D 2.50E+02 RESRAD Default NR NR NR NR Ru-106 P 3 D 3.OOE+02 RESRAD Default HR HR HR R Sr-90+D P 3 D 1.00E+02 RESRAD Default HR NR HR HR Sb-125 P 3 D 1.00E+01 RESRAD Default HR HR HR HR

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001. -03 ll

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 2-22 Y I.

Table I Input Parameters for Sensitivity Analysis, Soil Resident Farmer Scenario Parameter (unit) Type' Prlorityb Treatment 0 Value/Dlstribution Basis Distribution's Statistical Parametersd 1 2 3 4 Median TG_99 __3 D 5.OOE+00 RESRAD Defult NR NR NR NR Th-229+D P 3 D 5.OOE+02 RESRAD Defult NR NR NR NR Th-230 P 3 D 5.00E+02 RESRAD Default NR NR NR NR U-233 P 3 D 6.OOE+01 RESRAD Defut NR NR NR NR U-234 P 3 D 6.OOE+01 RESRAD Default NR NR NR NR U-235+D P 3 D 6.00E+0i1 RESRAD Deult NR NR NR NR Graphics Parameters Number of points 32 RESRAD Defaut NR NR NR NR Spacing log RESRAD Default NR NR NR NR Time integration parameters IMaximum number of points for dose 17 RESRAD Default NR NR NR NR Notes:

a P = physical, B - behavioral, M = metabolic; (see NUREGICR-6697, Attachment B, Table 4.)

b 1 - high-prority parameter, 2 = medium-priorty parameter, 3 = low-priorKy 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 = Q-value Triangular i = minimum, 2 = mode, 3 = maximum Uniform: 1 = minimum, 2 = maximum Additional SensKtivty Analysis Data:

Sampling technique = Latin Hypercube Number of observations =300 Number of repettions = 3 Input Rank Correlation Coefficients:

Thickness of contaminated zone and unsaturated zone = - 0.99 Well Pumping Rate and Irrigation Rate = 0.96

References:

1. Yu, C. et al., 'Data Collection Handbook to Support Modeling the Impacts of Radioactive Materlal in Soil"; US Department of Energy - Argonne National Laboratory, April 1993.

2. NUREG/CR-5512, Volume 3, "Residual Radioactive Contamination From Decommissioning: Parameter Analysis, Draft Report for Comment," October 1999.

3. Code of Federal Regulations, Title1 0, Section 20.1402, "Radiological Criteria for Unrestricted Use".

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-001-03 11

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 2-23 I

4. NUREG/CR-6697, Development of Probabilistic RESRAD 6.0 and RESRAD-BUILD 3.0 Computer Codes", December 2000.

5. YA-REPT-00-002-03, Hydrogeological Parameter Estimates for Radiation Dose Modeling, April 2003.

I I Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-00103

Subject:

RESRAD 621 Sensitivity Analysis for Soil Sheet No. Attachment 3-1 Attachment 3 YA-CALC-00-001-03 CD Stored pdf files: Sensitivity Analysis.pdf Deterministic Analysis.pdf

I Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC4OO-O01-03

Subject:

RESRAD 6.21 Sensitivity Analysis for Soil Sheet No. Attachment 3-2 The enclosed CD holds the pdf files containing the Resident Farmer Scenario sensitivity analyses input and output pages from the RESRAD mcsummar.rep and summary.rep reports.

CD Name: YACALC-00-001-03 File: Sensitivity Analysis.pdf Deterministic Analysis.pdf

CALCULATION TITLE PAGE Derived Concentration Guideline Levels for Soil at YNPS Site Title YA-CALC-00-002-03 Calculation Number Executive Summary:

The resident farmer scenario of the probabilistic computer code RESRAD version 6.21 was used to determine the peak of the mean dose for radionuclides of interest at the Yankee Rowe site. The peak of the mean dose per unit radionuclide concentration was used to calculate the nuclide specific Derived Concentration Guideline Levels for residual radioactivity in soil to meet the regulatory annual dose limit of 25 mrernlyr.

Approvals (Print & Sign Name)

Preparer Estell Keefr x_,Date:o Reviewer (Cog CM&anagA-1LLe):GT Date: re k/ei Approver (Cognizant Manager): Gr'~ ei&~o (J6QADaL:

DCM FORM 1.5-1A Page 1

Project Yankee Rowe License Termination Plan Calculation No. YA-CALC-00-002-03

Subject:

Derived Concentration Guideline Levels for Soil at YNPS Site Page 2 of 8 TABLE OF CONTENTS Page PURPOSE: ........................................................................................... 3

SUMMARY

OF RESULTS: ................. 3

REFERENCES:

...................................................................................................... .................. 4 ASSUMPTIONS: .5 METHOD / BODY OF CALCULATION: .5 TABLES Paqe Table 1. Radionuclide Specific DCGL Values for Soil ................................................................... 3 Table 2. Peak of the Mean Dose per Unit pCVgm as Determined by Probabilistic Analysis for the Resident Farmer Scenario ............................................................................. 6 Table 3. Soil DCGL values and DCGL Dose Results . ................................................................... 7 ATTACHMENTS No. of Pages Attachment 1. YA-CALC-00-002-03 CD ............................................................................. 2

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-XO-002-03 I

Subject:

Derived Concentration Guideline Levels for Soil at YNPS Site Page 3 of 8 PURPOSE:

The purpose of this calculation is to calculate nuclide specific Derived Concentration Guideline Level (DCGL) values using the peak of the mean dose determined in YR-CALC-00-001 -03, "RESRAD 6.21 Sensitivity Analysis for Soil-Resident Farmer Scenario," (Ref. 1). This method is in accordance with the NRC guidance provided in NUREG-1727 and the draft NUREG-1757 (Ref. 2, Ref. 3). Compliance with dose guidelines is demonstrated by running RESRAD V 6.21 using the calculated values of the DCGL as the radionuclide soil concentration.

SUMMARY

OF RESULTS:

NUREG-1 727 and Draft NUREG-1 757 both discuss the application of the peak of the mean dose to derive a nuclide specific DCGL value. The Sensitivity Analysis discussed in Ref. 1 used the probabilistic module in the RESRAD code to determine the mean dose distribution. The Sensitivity Analysis output also provides a summary of the peak of the mean dose and the time this peak occurs as determined from this dose distribution. The peak of the mean dose from a RESRAD run using a unit concentration for a particular nuclide is the Dose Conversion Factor (DCF) used for determining the DCGL. In the specific runs performed for this calculation, three repetitions were specified and the median of the three DCF results was used in the DCGL calculation.

Table I summarizes the DCF values documented in YR-CALC-00-001-03 (Ref.1), with the exception of the nickel values, which were obtained following the protocol discussed in the "Method/Body of Calculation" section below. The calculated DCGL values are based on the regulatory dose limit of 25 mrem/yr (Ref 4).

Table 1 - Radionuclide Specific DCGL Values for Soil Nuclide Median DCF DCGL Nuclide I Median DCF DCGL pCUgm mrem/yr per pCU/gm mremnyr per pCi/gm pCi/gm H-3 2.932E-02 8.527E+02 Sb-125 6.626E-01 3.773E+01 C-14 2.227E+00 1.123E+01 Cs-1 34 3.728E+oo 6.706E+00 Mn-54 1.154E+00 2.166E+01 Cs-137 2.042E+00 1.224E+01 Fe-55 6.907E-04 3.620E+04 Eu-152 2.073E+00 1.206E+01 Ni-59 6.239E-03 4.007E+03 Eu-154 2.247E+00 1.113E+01 Ni-63 1.708E-02 1.464E+03 Eu-1 55 5.353E-02 4.670E+02 Co-60 5.167E+00 4.838E+00 Pu-238 4.839E-01 5.166E+01 Sr-90 9.330E+00 2.680E+00 Pu-239 5.445E-01 4.591E+01 Nb-94 2.930E+00 8.532E+00 Pu-241 1.581 E-02 1.581E+03 TC-99 9.891 E-01 2.528E+01 Am-241 5.637E-01 4.435E+01 Ru-106 3.665E-01 6.821 E+01 Cm-243 5A93E-01 4.551E+01 Ag-108m 2.934E+00 8.521 E+00

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-002..03

Subject:

Derived Concentraton Guideline Levels for Soil at YNPS Site Page 4 of 8

REFERENCES:

1. YA-CALC-00-001 -03, "RESRAD 6.21 Sensitivity Analysis for Soil-Resident Farmer Scenario,"

May 2003.

2. NUREG-1 727. "NMSS Decommissioning Standard Review Plan," September 2000.

3. NUREG-1 757. "Consolidated NMSS Decommissioning Guidance," Volume 2: Characterization, Survey and Determination of Radiological Criteria," Draft Report for Comment, dated September 2002.

4. Code of Federal Regulations, Title 10, Section 20.1402, "Radiological Criteria for Unrestricted Uses."

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-002-03

Subject:

Derived Concentration Guideline Levels for Soil at YNPS Site Page 5 of 8 ASSUMPTIONS:

The resident farmer scenario was chosen for the YR site as the conservative bounding4scenario for establishing DCGL values for residual radioactivity in soil in compliance with the regulatory limits of 10CFR 20 (Ref. 4). A probabilistic analysis of the impact of parameter changes on the resultant dose is documented in Reference 1, "RESRAD 6.21 Sensitivity Analysis for Soil-Resident Farmer Scenario".

Running the RESRAD code in conjunction with a unit radionuclide concentration, results in a dose conversion factor in mremlyr per pCi/gm. This dose conversion factor can be used to derive DCGL values that sctisfy the dose limit for the average member of the critical group as required by I OCFR Part 20, Subpart E and described in NUREG-1 727, Appendix C (Ref. 2). Inherent in the use of the peak of the mean dose are the assumptions that the true value of a parameter falls within the specified range and that the peak of the mean dose is the maximum value of the mean dose over the evaluation time. In the specific case at YR, deterministic values were determined for 26 site-specific parameters, including 20 hydro-geologic parameters and 6 site-area parameters that minimize the uncertainty in the results that are associated with the use of parameter distributions.

METHOD I BODY OF CALCULATION:

The nuclide specific sensitivity analysis documented in Ref. 1 was performed using the following sampling specifications in the uncertainty analysis: Random Seed = 1000, No. of Observations = 300 and No. of Repetitions = 3. An average or mean dose distribution is determined over time based on 300 samplings of each parameter distribution. A peak search routine identifies the peak of the mean dose for each repetition of the RESRAD run as well as the time that the peak dose occurs. The peak of the mean dose, obtained with a 1 pCVgm radionuclide concentration, is used as a dose conversion factor (DCF) to derive the DCGL value.

RESRAD determines the peak of the mean dose for each of the 3 repetitions. A criterion for an acceptable variation among the results was established for the runs using 300 observations and 3 repetitons. This acceptance criterion for the precision in the repetitions, set at 3%, was used to trigger an additional probabilistic analysis using 1000 observations (and 3 repetitions) to minimize the variation among the resultant dose distributions (or optimize the convergence of the dose curves). Results falling outside this criterion were re-run with 1000 observations.

The nuclide DCGL was calculated using the median value of the three results. The median, which provides a measure of the middle of the data is, in the case of 3 reps, the middle value. The DCF was used to calculate the nuclide DCGL value according to the following equation.

DCGL (pCi/gm) = 25 mremlyr DCF (mrem/yr I pCi/gm)

Table 2 lists the DCF for each repetition of the run and the precision among the repetitions. For the nuclides with results falling outside the 3% criteria listed above, the results of the runs performed for 1000 observations are presented as well.

Table 3 lists the median DCF value from Table 2 and the corresponding DCGL based on the equation above. The dose verification In column 4 of Table 3, as recommended In NUREG-1727, demonstrates that the median dose value resulting from exposure to a soil concentraton at the DCGL value derived in this manner does not exceed the regulatory dose criterion of 25 mrem/yr. The verification runs used all the same input parameters as the sensitivity analysis documented in Ref. 1. The three doses listed for each

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-O002-03

Subject:

Derived Concentration Guideline Levels for Soil at YNPS Site Page 6 of 8 nuclide in column 4 represent the results of the probabilistic code run with three repetitions and 300 observations as used in Ref. 1.

Table 2 - Peak of the Mean Dose per unit pCi/gm as Determined by Probabilistic Analysis for the Resident Farmer Scenario-soil -

Radionuclide Peak of the Mean Dose' Peak of the Mean Dose' Peak of the Mean Dose* %precision Repetition i Repetition 2 Repetition 3 among Repetitions H-3 2.932E-02 2.913E-02 2.947E-02 0.58 C-14 2.229E+00 2.219E+00 2.227E+00 0.24 Mn-54 1.153E+00 1.154E+00 1.156E+00 0.13 Fe-55 6.907E-04 6.923E-04 6.904E-04 0.15 Ni-59 6.01OE-03 6.023E-03 6.550E-03 4.97 1000 obs. 6.222E-03 6.239E-03 6.267E-03 0.36 Ni-63 1.645E-02 1.649E-02 1.793E-02 4.95 1000 obs. 1.703E-02 1.708E-02 1.716E-02 0.38 Co-60 5.172E+00 5.154E+00 5.167E+00 0.18 Sr-90 9.270E+00 9.330E+00 9.653E+00 2.19 Nb-94 2.927E+00 2.931 E+00 2.930E+00 0.07 Tc-99 9.883E-01 9.891 E-01 1.027E+00 2.21 Ru-106 3.665E-01 3.668E-01 3.655E-01 0.19 Ag-108m 2.934E+00 2.932E+00 2.934E+00 0.04 Sb-125 6.619E-01 6.627E-01 6.626E-01 0.07 Cs-134 3.751 E+00 3.688E+00 3.728E+00 0.86 Cs-137 2.042E+00 2.037E+00 2.052E+00 0.37 Eu-152 2.073E+00 2.074E+00 2.073E+00 0.03 Eu-154 2.246E+00 2.247E+00 2.248E+00 0.04 Eu-I 55 5.348E-02 5.353E-02 5.354E-02 0.06 Pu-238 4.714E-01 4.952E-01 4.839E-01 2.46 Pu-239 5.462E-01 5.445E-01 5.275E-01 1.92 Pu-241 1.578E-02 1.581E-02 1.624E-02 1.61 Am-241 5.637E-01 5.639E-01 5.496E-01 1.47 Cm-243 5.493E-01 5.445E-01 5.582E-01 1.26 Unit in mremf/yr per pCUgm

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-002-03

Subject:

Derived Concentraton Guideline Levels for Soil at YNPS Site Page 7 of 8 Table 3 - Soil DCGL values and DCGL Dose Results Nuclide Median DCF DCGL DCGL mrem/yr per pCilgm pCi/gm Dose Calculation.

mremlyr H-3 2.932E-02 8.527E+02 25.00 24.84

_ ___ ___ ___ ___ ____ _____ ____ ___ ____ _____ ____ 25 .1 3 C-14 2.227E+00 1.123E+01 25.03 24.91 25.01 Mn-54 1.154E+00 2.166E+01 24.97 24.99

_______25.03 Fe-55 6.907E-04 3.620E+04 25.00

________25.06

__24.99 _____________

Ni-59 6.239E03 4.007E+03 24.93 25.00 25.11 Ni-63 1.708E-02 1.464E+03 24.94

. __________ _________________ _________________ 25 .01

_ __ __ __ _ __ __ __ _ __ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _2 5.1 2 Co-60 5.167E+00 4.838E+00 25.02

_ __ _ _ _ __ _ __ _ __ __ _ __ _ _ _ ~2 4 .94

.___ _ ________ _ _ _ _ _ __ _ _ _2 5 .0 0 Sr-90 9.330E+00 2.680E+00 24.84

_ _ _ __ __ __ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _2 5.0 1 25.87 Nb-94 2.930E+00 8.532E+00 24.97 25.01 25.00 Tc-99 9.891 E-01 2.528E+01 24.98 25.00 25.96 Ru-106 3.665E-01 6.821E+01 25.00 25.02 24.93 Ag-108m 2.934E+00 8.521 E+00 25.00 24.98 25.00 Sb-125 6.626E-01 3.773E+01 24.97 25.01

__ __ _ _ _ __ _ __ __ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _2 5 .0 0

Project: Yankee Rowe License Termination Plan Calculation No. YA-CALC-0O-002-03

Subject:

Derived Concentration Guideline Levels for Soil at YNPS Site Page 8 of 8 Table 3 - Soil DCGL values and DCGL Dose Results, con Nuclide Median DCF DCGL DCGL mremlyr per pCiUgm pCi/gm Dose Calculation mremlyr Cs-134 3.728E+00 6.706E+00 25.16

__________ ~~~~~~~~~24.73 25.00 Cs-137 2.042E+00 1.224E+01 25.00 24.94 25.12 Eu-152 2.073E+00 1.206E+01 25.00 25.01

_____ _ _25.00 Eu-154 2.247E+00 1.1 13E+01 25.00

__________ ________________ ~~25.01 25.02 Eu-155 5.353E-02 4.670E+02 24.98 25.00 25.00 Pu-238 4.839E-01 5.166E+01 24.35 25.58 25.00 Pu-239 5.445E-01 4.591 E+01 25.08 25.00 24.22 Pu-241 1.581 E-02 1.581 E+03 24.95 25.00 25.68 Am-241 5.637E-01 4.435E+01 25.00

_ __ _ _ _ _ _ _ __ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _2 5.01 24.38 Cm-243 5.493E-01 4.551E+01 25.00 24.78 25.40

_ _ _ _ ~I __ _ _ I. _ I__ _ _ _

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-00-002-03

Subject:

Derived Concentration Guideline Levels for Soil at YNPS Site Attachment I Page:l of 2 Attachment I YA-CALC-00-002-03 CD

Project: Yankee Rowe Ucense Termination Plan Calculation No. YA-CALC-O0-002-03

Subject:

Derived Concentration Guideline Levels for Soil at YNPS Site Attachment I Page:2 of 2 The enclosed CD contains the electronic image files containing the Resident Farmer Scenario DCGL Dose Verification output pages from the RESRAD V6:21 mcsummar.rep and summary.rep reports.

The DCGL Deterministic Input.pdf is included to demonstrate that the calculated DCGL value was used as the initial radionuclide concentration. The DCGL Dose Verification.pdf is included to show the annual dose corresponding to a radionuclide concentration equal to the calculated DCGL values. The Sensitivity Analysis.pdf is provided to show the DCF values determined in the probabilistic runs discussed in Ref. 1. Two Files are also provided containing the Nickel runs with 1000Observations.

CD Name: YA-CALC-00-002-03 File: DCGL Deterministic Input.pdf Deterministic Input_Ni_1000.pdf DCGL Dose Verification.pdf DCGL Dose Verification_Ni_1000.pdf Sensitivity Analysis.pdf