ML25345A140
| ML25345A140 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 12/11/2025 |
| From: | Holtec Decommissioning International, Radiation Safety & Control Services |
| To: | Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML25345A092 | List:
|
| References | |
| HDI 25-039 25-090, Rev 0 | |
| Download: ML25345A140 (0) | |
Text
Soil DCGL Values Assuming the Residential Scenario With Drinking Water Technical Support Document No.25-090 Revision 0 Prepared by: ______________________________________________________
Joseph Bisson, Technical Consultant Reviewed by:
William Parish, CHP, Sr. Health Physicist Approved by: ______________________________________________________
Christopher Messier, Sr. Director of Engineering and Strategic Development Radiation Safety & Control Services, Inc 93 Ledge Road, Seabrook, NH 03874 1-800-525-8339 (603) 778-2871 (Outside USA) www.radsafety.com Sept. 12, 2025
~ RSCS Rad1at1or Safety & Control Services RSCS Radiation Safety & Control Services
RSCS TSD 25-090 Revision 0 Page 2 Soil DCGL Values Assuming Residential Scenario With Drinking Water Contents 1
Introduction........................................................................................................................ 3 2
Method of Calculation........................................................................................................ 3 3
Input and Calculations........................................................................................................ 3 4
Results.............................................................................................................................. 22 5
References........................................................................................................................ 22
RSCS TSD 25-090 Revision 0 Page 3 Soil DCGL Values Assuming Residential Scenario With Drinking Water 1 Introduction This calculation documents the development of derived concentration guideline level (DCGL) values for soil in open land areas at the Oyster Creek Nuclear Generating Station (OCNGS) site assuming the less likely but plausible (LLBP) residential scenario with groundwater as a source of drinking water.
The residential scenario assumes that the OCNGS site is transitioned to a residential neighborhood consisting of single-family houses with enough land area to support a backyard garden. The critical receptor is a hypothetic individual who resides on the site year-round (i.e., does not leave the site for offsite employment), ingests garden vegetables grown in a backyard garden, uses untreated site groundwater as a drinking water source and a source of irrigation water for the backyard garden, and ingests aquatic food from the canal which is assumed to remain after license termination. The area of the backyard garden is 650 ft2, which is equal to the average garden size in NJ. Shielding due to the newly developed asphalt neighborhood roads and driveways is ignored. Additionally, there is no meat-or milk-producing livestock onsite.
Six RESRAD exposure pathways are assumed open: external gamma, inhalation, plant ingestion, aquatic food ingestion, drinking water ingestion, and soil ingestion. Closed RESRAD exposure pathways are meat, milk, and radon.
The conceptual model used for residential scenario is the same as that used in TSD 25-089 [1]. The model consists of 3 geologic strata: a contaminated zone (CZ), an unsaturated zone (UZ), and a saturated zone (SZ). The CZ is assumed to be uncovered, equivalent in size to the OCS Protected Area (PA), 124,400 m2.
The UZ, SZ, and groundwater in the SZ are assumed initially uncontaminated.
The DCGL values developed in this document correspond to the NRC dose criteria established in 10CFR20.1403 (i.e., 25 mrem/y).
2 Method of Calculation The RESRAD-Onsite code (v7.2) was used to calculate peak of the mean (POM) doses supporting DCGL development. DCGL values are calculated as follows:
DCGL, pCi/g = (25 mrem/y)/(POM dose, mrem/y per 1pCi/g) 3 Input and Calculations A site-specific suite of potential radionuclides-of-concern (ROCs) has been identified for the OCNGS site
[2] and is listed in Table 1. RESRAD-Onsite 7.2 automatically accounts for progeny radionuclides with input for several of the ROCs. Progeny radionuclides are also listed in Table 1.
RSCS TSD 25-090 Revision 0 Page 4 Soil DCGL Values Assuming Residential Scenario With Drinking Water Table 1: Radionuclides of Concern Identified for the OCNGS Site ROC Progeny ROC Progeny Am-241 Np-237, Th-229, U-233 Nb-94 C-14 Ni-63 Cm-243 Ac-227, Am-243, Pa-231, Pu-239, U-235 Np-237 Th-229, U-233 Cm-244 Pu-240, Ra-228, Th-228, Th-232, U-236 Pu-238 Pb-210, Po-210, Ra-226, Th-230, U-234 Cs-137 Pu-239 Ac-227, Pa-231, U-235 Co-60 Pu-240 Ra-228, Th-228, Th-232, U-236 Eu-152 Gd-152 Pu-241 Am-241, Np-237, Th-229, U-233 Eu-154 Sb-125 Te-125m Fe-55 Sr-90 H-3 Tc-99 Mn-54 The area of the backyard garden = 650 ft2 (60.4 m2).
The annual dietary fraction of aquatic food from the canal is set to 0.61, the 75th percentile value of the distribution is used as conservative input (see ENG-OCS-008 [3]).
The irrigation rate (IRr) for the garden is determined using equation 3.4.2 in ANL/EVS/TM-14/4:
IRr = (ETr/Ce)-(1-Cr)(Pr)
Where IRr
= The irrigation rate (IRr), m/y ETr
= estimated Evapotranspiration Rate (m/y) = 0.6 (see Figure 3.3.1 in ANL/EVS/TM-14/4)
Pr
= the Precipitation Rate (m/y) = 1.4 (OCNGS site met data; see ENG-OCS-001 [4])
Ce
= Evapotranspiration Coefficient distribution applied (NUREG-6697 [5]: min value = 0.5, max value = 0.75)
Cr
= the Runoff Coefficient = 0.2 (determined in ENG-OCS-001)
RSCS TSD 25-090 Revision 0 Page 5 Soil DCGL Values Assuming Residential Scenario With Drinking Water The maximum and minimum values for IRr are:
Variable Use of Min Ce Value Use of Max Ce Value ETr (m/y) 0.6 0.6 Pr (m/y) 1.4 1.4 Cr 0.2 0.2 Ce 0.5 0.75 IRr (m/y) 0.08
-0.32, assumed = 0 A uniform distribution with minimum and maximum value equal to 0.0 and 0.08, respectively, and a mean equal to 0.04 m/y was assigned as input for IRr.
The well pumping rate was determined using the method found in NUREG/CR-7267 [6] with an adjustment of the contaminated fraction for plants (fp) based on garden size and drinking water volume based on family of 4.
fp = min (A/2000m2, 0.5), from NUREG/CR-7267, Table C-13.
fp = 60.4m2/2000m2 = 0.03 Ground Water Use Component (general case)
Minimum Water Use, m3/y Maximum Water Use, m3/y Household (family of 4), m3/y 0
0 Livestock, m3/y 0
0 Irrigation Water, m3/y = fp x Ir x 60.4 0
0.146 Contaminated fraction (fp) 0.03 0.03 Irrigation Rate (IRr), m/y 0.0 0.08 Drinking Watera (family of 4), m3/y 1.64 1.64 Total, m3/y 1.64 1.79 a From NUREG/CR-7267.
The maximum water use value was rounded up to 1.8 m3/y and selected as input for the Well Pumping Rate parameter. Risk-sensitive parameters for soil at the OCNGS site have been identified by probabilistic analysis (ENG-OCS-001). The 75th and 25th percentile values determined from the results of the probabilistic analysis were assigned as input for the identified risk-sensitive parameters. Input values and their basis for all RESRAD-ONSITE parameters are provided Table 2.
RSCS TSD 25-090 Revision 0 Page 6 Soil DCGL Values Assuming Residential Scenario With Drinking Water Table 2: RESRAD-Onsite Input Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Soil Concentrations Basic radiation dose limit (mrem/y)
P 3
D 25 10 CFR 20.1402 NR NR NR NR Initial principal radionuclide (pCi/g)
P 2
D 1
Unit Value NR NR NR NR Distribution coefficients (sand soil type assigned to contaminated, unsaturated. and saturated zones) (cm3/g)
Ac-227 P
1 S
Truncated lognormal-n NUREG/CR-7267 7.44 1.1 0.001 0.999 1700 Am-241 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.91 1.95 0.001 0.999 1000 Am-243 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.91 1.95 0.001 0.999 1000 C-14 P
1 S
Truncated lognormal-n NUREG/CR-7267 3.04 1.82 0.001 0.999 21 Cm-243 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 8.13 2.64 0.001 0.999 3400 Cm-244 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 8.13 2.64 0.001 0.999 3400 Co-60 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 5.56 2.89 0.001 0.999 260 Cs-137 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.27 1.79 0.001 0.999 530 Eu-152 P
1 S
D Truncated lognormal-n 1.4E+04 NUREG/CR-7267 distribution assigned to UZ and SZ 75th percentile value assigned to CZ 6.86 4.01 0.001 0.999 955 Eu-154 P
1 S
D Truncated lognormal-n 1.4E+04 NUREG/CR-7267 distribution assigned to UZ and SZ 75th percentile value assigned to CZ 6.86 4.01 0.001 0.999 955 Fe-55 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 5.77 0
0.001 0.999 320 Gd-152 P
1 S
Truncated lognormal-n NUREG/CR-7267 1.61 3.22 0.001 0.999 5
H-3 P
1 S
D Truncated lognormal-n 4.3E-02 NUREG/CR-7267 distribution assigned to UZ and SZ 25th percentile value assigned to CZ
-2.81 0.5 0.001 0.999 0.06 Mn-54 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.89 2.64 0.001 0.999 980
RSCS TSD 25-090 Revision 0 Page 7 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Nb-94 P
1 S
Truncated lognormal-n NUREG/CR-7267 7.31 1.39 0.001 0.999 1500 Ni-63 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.87 2.3 0.001 0.999 130 Np-237 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 2.64 1.39 0.001 0.999 14 Pa-231 P
1 S
Truncated lognormal-n NUREG/CR-7267 7.6 1.1 0.001 0.999 2000 Pb-210 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 5.39 1.39 0.001 0.999 220 Po-210 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.61 1.79 0.001 0.999 100 Pu-238 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 5.99 1.39 0.001 0.999 400 Pu-239 P
1 S
D Truncated lognormal-n 1.0E+03 ANL/EVS/TM-14/4 distribution assigned to UZ and SZ 75th percentile value assigned to CZ 5.99 1.39 0.001 0.999 400 Pu-240 P
1 S
D D
Truncated lognormal-n 1.0E+03 1.6E+02 ANL/EVS/TM-14/4 distribution assigned to SZ 75th percentile value assigned to CZ 25th percentile value assigned to UZ 5.99 1.39 0.001 0.999 400 Pu-241 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 5.99 1.39 0.001 0.999 400 Ra-226 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 8.04 2.08 0.001 0.999 3100 Ra-228 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 8.04 2.08 0.001 0.999 3100 Sb-125 P
1 S
D Truncated lognormal-n 5.6E+01 ANL/EVS/TM-14/4 distribution assigned to UZ and SZ 75th percentile value assigned to CZ 2.83 1.79 0.001 0.999 17 Sr-90 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 3.09 1.79 0.001 0.999 22 Tc-99 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4
-3.22 1.1 0.001 0.999 0.04 Te-125m P
1 S
Truncated lognormal-n NUREG/CR-7267 6.31 3.22 0.001 0.999 550 Th-228 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.55 2.4 0.001 0.999 700 Th-229 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.55 2.4 0.001 0.999 700
RSCS TSD 25-090 Revision 0 Page 8 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Th-230 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.55 2.4 0.001 0.999 700 Th-232 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 6.55 2.4 0.001 0.999 700 U-233 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.7 2.48 0.001 0.999 110 U-234 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.7 2.48 0.001 0.999 110 U-235 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.7 2.48 0.001 0.999 110 U-236 P
1 S
Truncated lognormal-n ANL/EVS/TM-14/4 4.7 2.48 0.001 0.999 110 Initial concentration of radionuclides present in groundwater (pCi/l)
P 3
D 0
Ground water uncontaminated Calculation Times Time since placement of material (y)
P 3
D 0
Time for calculations (y)
P 3
D 0, 1, 3, 10, 30, 100, 300, 1000 RESRAD Default Contaminated Zone Area of contaminated zone (m2)
P 2
D 124,400 See figure for OCS PA in step 5.2.1a above Thickness of contaminated zone (m)
P 2
S D
Uniform 3.0E+00 Site-specific uniform distribution assigned to Sb-125, Eu-152, and Eu-154 75th percentile assigned to Am-241, C-14, Cm-243, Cm-244, Co-60, Cs-137, Fe-55, H-3, Mn-54, Nb-94, Ni-63, Np-237, Pu-238, Pu-239, Pu-240, Pu-241, Sr-90, and Tc-99 0.1524 3.96 2.06 Length parallel to aquifer flow (m)
P 2
D 398 Site-specific - assumed diameter of a circle with an area
=
OCS contaminated
- zone, 124,400 m2 Cover and Contaminated Zone Hydrological Data Cover depth (m)
P 2
D 0
Consistent with resident farmer scenario - no cover assumed
RSCS TSD 25-090 Revision 0 Page 9 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Density of contaminated zone (g/cm3)
P 1
S D
Truncated Normal 1.6E+00 NUREG/CR-7267 distribution for site soil type (sand) assigned to all ROCs, except C-14 and H-
- 3.
75th percentile assigned to C-14 and H-3 1.5105 0.159 0.001 0.999 1.5105 Contaminated zone erosion rate (m/y)
P 2
D 6E-04 NUREG/CR-7267; assumed erosion rate for site with shallow slope (i.e., relatively level)
Contaminated zone total porosity P
2 S
Truncated Normal NUREG/CR-7267 distribution for site soil type -sand 0.43 0.06 0.001 0.999 0.43 Contaminated zone field capacity P
3 D
0.18 Value based on site-specific soil type (sand);
calculated using equation in NUREG/CR-7267 Contaminated zone hydraulic conductivity (m/y)
P 2
D 2741 2017 Hydrogeologic Investigation Report Contaminated zone b parameter P
2 S
Bounded Log Normal n NUREG/CR-7267 distribution for site soil type - sand
- 0.0253 0.216 0.501 1.90 0.975 Humidity in air (g/m3)
P 3
D 6.6 Figure 1 in Regional and Site-Specific Absolute Humidity Data for Use in Tritium Dose Calculations (figure provide below)
Evapotranspiration coefficient P
2 S
Uniform NUREG/CR-7267 0.5 0.75 NR NR 0.625 Average annual wind speed (m/s)
P 2
D 3.13 Internet search:
https://www.windfinder.c om/windstatistics/oyster_
creek_barnegat_bay
RSCS TSD 25-090 Revision 0 Page 10 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Precipitation (m/y)
P 2
D 1.4 Annual Report on the Meteorological Program at Oyster Creek Generating Station average annual precipitation for 2015 through 2020 Irrigation (m/y)
B 3
S Uniform Distribution determined using methodology described in Data Collection Handbook and NUREG/CR-6697.
0 0.08 0.04 Irrigation mode B
3 D
Overhead Overhead irrigation is common practice for crops in U.S.
Runoff coefficient P
2 D
0.2 Value determined using methodology described in Data Collection Handbook and NUREG/CR-7267 Watershed area for nearby stream or pond (m2)
P 3
D 1.01E+08 NJ-GeoWeb (NJDEP BGIS) see figures below Accuracy for water/soil computations 3
D 1.00E-03 RESRAD Default Saturated Zone Hydrological Data Density of saturated zone (g/cm3)
P 1
S Truncated Normal NUREG/CR-7267 Table C-1, distribution for site soil type -sand 1.5105 0.159 0.001 0.999 1.5105 Saturated zone total porosity P
1 S
Truncated Normal NUREG/CR-7267 distribution for site soil type -sand 0.43 0.06 0.001 0.999 0.43 Saturated zone effective porosity P
1 D
0.25 2017 Hydrogeologic Investigation Report Saturated zone field capacity P
3 D
0.18 Value based on site-specific soil type (sand);
calculated using equation in NUREG/CR-7267 Saturated zone hydraulic conductivity (m/y)
P 1
D 2741 2017 Hydrogeologic Investigation Report Saturated zone hydraulic gradient P
2 S
Uniform 2017 Hydrogeologic Investigation Report (section 5.1.4) 0.01 0.04 0.025
RSCS TSD 25-090 Revision 0 Page 11 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Saturated zone b parameter P
2 S
Bounded Log Normal n NUREG/CR-7267 distribution for site soil type - sand
- 0.0253 0.216 0.501 1.90 0.975 Water table drop rate (m/y)
P 3
D 1.00E-03 RESRAD Default Well pump intake depth (m below water table)
P 2
S Triangular NUREG/CR-7267 6
10 30 14.51 Model: Nondispersion (ND) or Mass-Balance (MB)
P 3
D ND ND model recommended for contaminant areas
>1,000 m2 Well pumping rate (m3/y)
P 2
D 1.8 Determined using methodology described in NUREG/CR-7267. Includes irrigation of garden &
drinking water.
Unsaturated Zone Hydrological Data Number of unsaturated zone strata P
3 D
1 2017 Hydrogeologic Investigation Report (Figures 5.7 & 5.8)
Unsat. zone 1, thickness (m)
P 1
S Uniform Distribution developed from depth range for site groundwater, 5 ft - 20 ft (2017 Hydrogeologic Investigation Report (section 2.4.3) and mimimum thickness of CZ (0.5 ft) 1.37 5.94 3.65 Unsat. zone 1, soil density (g/cm3)
P 2
S Truncated Normal NUREG/CR-7267 distribution for site soil type - sand 1.5105 0.159 0.001 0.999 1.5105 Unsat. zone 1, total porosity P
2 S
Truncated Normal NUREG/CR-7267 distribution for site soil type - sand 0.43 0.06 0.001 0.999 0.43 Unsat. zone 1, effective porosity P
2 D
0.25 2017 Hydrogeologic Investigation Report Unsat. zone 1, field capacity P
3 D
0.18 Value based on site-specific soil type (sand);
calculated using equation in NUREG/CR-7267
RSCS TSD 25-090 Revision 0 Page 12 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Unsat. zone 1, hydraulic conductivity (m/y)
P 2
D 2741 2017 Hydrogeologic Investigation Report Unsat. zone 1, soil-specific b parameter P
2 S
Bounded Log Normal n NUREG/CR-7267 distribution for site soil type - sand
- 0.0253 0.216 0.501 1.90 0.975 Occupancy Inhalation rate (m3/y)
B 3
D 8400 NUREG/CR-7267 Mass loading for inhalation (g/m3)
P 2
S Continuous linear NUREG/CR-7267 2.3E-5 Exposure duration B
3 D
30 RESRAD Default Indoor dust filtration factor P
2 S
Uniform NUREG/CR-7267 0.15 0.95 0.55 Shielding factor, external gamma P
2 S
D Bounded lognormal-n 4.0E-01 NUREG/CR-7267 distribution assigned to Am-241, C-14, Cm-244, Fe-55, H-3, Ni-63, Np-237, Pu-238, Pu-239, Pu-240, Pu-241, Sr-90, and Tc-99 75th percentile assigned to Cm-243, Co-60, Cs-137, Eu-152, Eu-154, Mn-54, Nb-94, and Sb-125
-1.3 0.59 0.044 1
0.2725 Fraction of time spent indoors B
3 D
0.6571 NUREG/CR-5512, Vol. 3 Fraction of time spent outdoors B
3 D
0.1181 NUREG/CR-5512, Vol. 3 (outdoors + gardening)
Shape factor flag, external gamma P
3 D
Circular RESRAD Default - Circular contaminated zone assumed Ingestion, Dietary Fruits, vegetables, grain consumption (kg/y)
B 2
D 112 NUREG/CR-5512, Vol. 3 (other vegetables + fruits +
grain)
Leafy vegetable consumption (kg/y)
B 3
D 21.4 NUREG/CR-5512, Vol. 3 Milk consumption (L/y)
B 2
D 233 NUREG/CR-5512, Vol. 3 Meat and poultry consumption (kg/y)
B 3
D 65.1 NUREG/CR5512, Vol. 3 (beef + poultry)
Fish consumption (kg/y)
B 3
D 20.6 NUREG/CR-5512, Vol. 3 Other seafood consumption (kg/y)
B 3
D 0.9 RESRAD Default
RSCS TSD 25-090 Revision 0 Page 13 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Soil ingestion rate (g/yr)
B 2
D 18.26 NUREG/CR-5512, Vol. 3 Drinking water intake (L/y)
B 2
D 478.5 NUREG/CR-5512, Vol. 3 Contamination fraction of drinking water P
3 D
1 all drinking water from groundwater source Contamination fraction of household water P
3 NA Contamination fraction of livestock water P
3 D
0 No livestock on site Contamination fraction of irrigation water P
3 D
1 GW used for irrigation Contamination fraction of aquatic food P
2 D
0.61 75th percentile value from IU evaluation Contamination fraction of plant food P
3 D
0.03 Based on the size of garden Contamination fraction of meat P
3 D
0 No livestock Contamination fraction of milk P
3 D
0 No livestock Ingestion, Non-Dietary Livestock fodder intake for meat (kg/d)
M 3
D 27.1 NUREG/CR5512, beef cattle + poultry + layer hen Livestock fodder intake for milk (kg/d)
M 3
D 63.2 NUREG/CR5512, forage +
grain + hay Livestock water intake for meat (L/d)
M 3
D 50.6 NUREG/CR5512, beef cattle + poultry + layer hen Livestock water intake for milk (L/d)
M 3
D 60 NUREG/CR5512 Livestock soil intake (kg/d)
M 3
D 0.5 RESRAD Default Mass loading for foliar deposition (g/m3)
P 3
D 4.00E-04 NUREG/CR-5512, gardening Depth of soil mixing layer (m)
P 2
S Triangular NUREG/CR-7267 0
0.15 0.6 0.23
RSCS TSD 25-090 Revision 0 Page 14 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Depth of roots (m)
P 1
S D
Uniform 1.2E+00 NUREG/CR-7267 distribution assigned to C-14, Co-60, Eu-152, Eu-154, Mn-54, Nb-94, Pu-239, Pu-240, and Sb-125 25th percentile assigned to Am-241, Cm-243, Cm-244, Cs-137, Fe-55, H-3, Ni-63, Np-237, Pu-238, Pu-241, Sr-90, and Tc-99 0.3 4
1.85 Drinking water fraction from ground water P
3 D
1 Groundwater as source Household water fraction from ground water (if used)
P 3
NA Livestock water fraction from groundwater P
3 D
0 No livestock Irrigation fraction from groundwater P
3 D
1 GW used to irrigate garden Wet weight crop yield for Non-Leafy (kg/m2)
P 2
S Truncated lognormal-n NUREG/CR-7267 0.56 0.48 0.001 0.999 1.75 Wet weight crop yield for Leafy (kg/m2)
P 3
D 2.88921 NUREG/CR-5512 Wet weight crop yield for Fodder (kg/m2)
P 3
D 1.8868 NUREG/CR-5512 Growing Season for Non-Leafy (y)
P 3
D 0.246 NUREG/CR-5512 Growing Season for Leafy (y)
P 3
D 0.123 NUREG/CR-5512 Growing Season for Fodder (y)
P 3
D 0.082 NUREG/CR-5512 Translocation Factor for Non-Leafy P
3 D
0.1 NUREG/CR-5512 Translocation Factor for Leafy P
3 D
1 NUREG/CR-5512 Translocation Factor for Fodder P
3 D
1 NUREG/CR-5512 Weathering Removal Constant for Vegetation (1/y)
P 2
S Triangular NUREG/CR-7267 5.1 18 84 33 Wet Foliar Interception Fraction for Non-Leafy P
3 D
0.35 NUREG/CR-5512 Wet Foliar Interception Fraction for Leafy P
2 S
Triangular NUREG/CR-7267 0.06 0.67 0.95 0.58 Wet Foliar Interception Fraction for Fodder P
3 D
0.35 NUREG/CR-5512
RSCS TSD 25-090 Revision 0 Page 15 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Dry Foliar Interception Fraction for Non-Leafy P
3 D
0.35 NUREG/CR-5512 Dry Foliar Interception Fraction for Leafy P
3 D
0.35 NUREG/CR-5512 Dry Foliar Interception Fraction for Fodder P
3 D
0.35 NUREG/CR-5512 Storage times of contaminated foodstuffs (days):
Fruits, non-leafy vegetables, and grain B
3 D
14 NUREG/CR-5512 Leafy vegetables B
3 D
1 NUREG/CR-5512 Milk B
3 D
1 NUREG/CR-5512 Meat and poultry B
3 D
20 NUREG/CR-5512 (holdup period for beef)
Fish B
3 D
7 RESRAD Default Crustacea and mollusks B
3 D
7 RESRAD Default Well water B
3 D
1 RESRAD Default Surface water B
3 D
1 RESRAD Default Livestock fodder B
3 D
45 RESRAD Default Special Radionuclides (C-14)
C-12 concentration in water (g/cm3)
P 3
D 2.00E-05 RESRAD Default C-12 concentration in contaminated soil (g/g)
P 3
D 3.00E-02 RESRAD Default Fraction of vegetation carbon from soil P
3 D
2.00E-02 RESRAD Default Fraction of vegetation carbon from air P
3 D
9.80E-01 RESRAD Default C-14 evasion layer thickness in soil (m)
P 2
D 4.3E-01 75th percentile C-14 evasion flux rate from soil (1/s)
P 3
D 7.00E-07 RESRAD Default C-12 evasion flux rate from soil (1/s)
P 3
D 1.00E-10 RESRAD Default Fraction of grain in beef cattle feed B
3 D
0.2500 NUREG/CR-7267 Fraction of grain in milk cow feed B
3 D
0.1000 NUREG/CR-7267 Inhalation Dose Conversion Factors (mrem/pCi inhaled) from FGR11 (contained in RESRAD Dose Conversion Library)
Ingestion Dose Conversion Factors (mrem/pCi ingested) from FGR11 (contained in RESRAD Dose Conversion Library)
Plant Transfer Factors (pCi/g plant)/(pCi/g soil)
Ac-227 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.9 1.1 0.001 0.999 1.0E-03 Am-241 P
1 D
1.8E-03 75th percentile
RSCS TSD 25-090 Revision 0 Page 16 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Am-243 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.9 0.9 0.001 0.999 1.0E-03 C-14 P
1 S
Truncated lognormal-n NUREG/CR-7267
-0.4 0.9 0.001 0.999 6.7E-01 Cm-243 P
1 D
1.8E-03 75th percentile Cm-244 P
1 D
1.8E-03 75th percentile Co-60 P
1 D
1.5E-01 75th percentile Cs-137 P
1 D
8.0E-02 75th percentile Eu-152 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.2 1.1 0.001 0.999 2.0E-03 Eu-154 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.2 1.1 0.001 0.999 2.0E-03 Fe-55 P
1 D
1.8E-03 75th percentile Gd-152 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.2 1.1 0.001 0.999 2.0E-03 H-3 P
1 S
Truncated lognormal-n NUREG/CR-7267 1.6 1.1 0.001 0.999 5.0E+00 Mn-54 P
1 D
5.5E-01 75th percentile Nb-94 P
1 S
Truncated lognormal-n NUREG/CR-7267
-4.6 1.0
.001
.999 2.0E-03 Ni-63 P
1 D
9.1E-02 75th percentile Np-237 P
1 D
3.7E-02 75th percentile Pa-231 P
1 S
Truncated lognormal-n NUREG/CR-7267
-4.6 1.1 0.001 0.999 1.0E-02 Pb-210 P
1 S
Truncated lognormal-n NUREG/CR-7267
-5.5 0.9 0.001 0.999 4.0E-03 Po-210 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.9 0.9 0.001 0.999 1.0E-03 Pu-238 P
1 D
1.8E-03 75th percentile Pu-239 P
1 D
1.8E-03 75th percentile Pu-240 P
1 D
1.8E-03 75th percentile Pu-241 P
1 D
1.8E-03 75th percentile Ra-226 P
1 S
Truncated lognormal-n NUREG/CR-7267
-3.2 0.9 0.001 0.999 4.0E-02 Ra-228 P
1 S
Truncated lognormal-n NUREG/CR-7267
-3.2 0.9 0.001 0.999 4.0E-02 Sb-125 P
1 S
Truncated lognormal-n NUREG/CR-7267
-4.6 1.0 0.001 0.999 1.0E-02 Sr-90 P
1 D
5.9E-01 75th percentile Tc-99 P
1 D
9.1E+00 75th percentile Te-125m P
1 S
Truncated lognormal-n NUREG/CR-7267
-3.1 1.0 0.001 0.999 1.0E-01 Th-228 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.9 0.9 0.001 0.999 1.0E-03 Th-229 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.9 0.9 0.001 0.999 1.0E-03
RSCS TSD 25-090 Revision 0 Page 17 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Th-230 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.9 0.9 0.001 0.999 1.0E-03 Th-232 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.9 0.9 0.001 0.999 1.0E-03 U-233 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.2 0.9 0.001 0.999 2.0E-03 U-234 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.2 0.9 0.001 0.999 2.0E-03 U-235 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.2 0.9 0.001 0.999 2.0E-03 U-236 P
1 S
Truncated lognormal-n NUREG/CR-7267
-6.2 0.9 0.001 0.999 2.0E-03 Meat Transfer Factors (pCi/kg)/(pCi/d): Input values not used - No contaminated meat ingestion pathway Ac-227 P
2 S
Truncated lognormal-n NUREG/CR-7267
-10.82 1.0 0.001 0.999 2.0E-05 Am-241 P
2 S
Truncated lognormal-n NUREG/CR-7267
-9.90 0.4 0.001 0.999 5.0E-05 Am-243 P
2 S
Truncated lognormal-n NUREG/CR-7267
-9.90 0.4 0.001 0.999 5.0E-05 C-14 P
2 S
Truncated lognormal-n NUREG/CR-7267
-3.47 1.0 0.001 0.999 3.1E-02 Cm-243 P
2 S
Truncated lognormal-n NUREG/CR-7267
-10.82 1.0 0.001 0.999 2.0E-05 Cm-244 P
2 S
Truncated lognormal-n NUREG/CR-7267
-10.82 1.0 0.001 0.999 2.0E-05 Co-60 P
2 S
Truncated lognormal-n NUREG/CR-7267
-7.75 0.8 0.001 0.999 4.3E-04 Cs-137 P
2 D
4.0E-02 75th percentile Eu-152 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.21 1.0 0.001 0.999 2.0E-03 Eu-154 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.21 1.0 0.001 0.999 2.0E-03 Fe-55 P
2 D
1.8E-02 75th percentile Gd-152 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.21 1.0 0.001 0.999 2.0E-03 H-3 P
2 S
Truncated lognormal-n NUREG/CR-7267
-4.42 1.0 0.001 0.999 1.2E-02 Mn-54 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.91 0.7 0.001 0.999 1.0E-03 Nb-94 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.82 0.9 0.001 0.999 1.0E-06 Ni-63 P
2 S
Truncated lognormal-n NUREG/CR-7267
-5.3 0.9 0.001 0.999 5.0E-03 Np-237 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.91 0.7 0.001 0.999 1.0E-03 Pa-231 P
2 S
Truncated lognormal-n NUREG/CR-7267
-12.21 1.0 0.001 0.999 5.0E-06 Pb-210 P
2 S
Truncated lognormal-n NUREG/CR-7267
-7.26 0.9 0.001 0.999 7.0E-04 Po-210 P
2 S
Truncated lognormal-n NUREG/CR-7267
-5.3 0.7 0.001 0.999 5.0E-03 Pu-238 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.72 3.2 0.001 0.999 1.1E-06 Pu-239 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.72 3.2 0.001 0.999 1.1E-06 Pu-240 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.72 3.2 0.001 0.999 1.1E-06
RSCS TSD 25-090 Revision 0 Page 18 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Pu-241 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.72 3.2 0.001 0.999 1.1E-06 Ra-226 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.91 0.7 0.001 0.999 1.0E-03 Ra-228 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.91 0.7 0.001 0.999 1.0E-03 Sb-125 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.91 0.9 0.001 0.999 1.0E-03 Sr-90 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.65 1.1 0.001 0.999 1.3E-03 Tc-99 P
2 S
Truncated lognormal-n NUREG/CR-7267
-9.21 0.7 0.001 0.999 1.0E-04 Te-125m P
2 S
Truncated lognormal-n NUREG/CR-7267
-4.96 0.9 0.001 0.999 7.0E-03 Th-228 P
2 S
Truncated lognormal-n NUREG/CR-7267
-8.38 1.1 0.001 0.999 2.3E-04 Th-229 P
2 S
Truncated lognormal-n NUREG/CR-7267
-8.38 1.1 0.001 0.999 2.3E-04 Th-230 P
2 S
Truncated lognormal-n NUREG/CR-7267
-8.38 1.1 0.001 0.999 2.3E-04 Th-232 P
2 S
Truncated lognormal-n NUREG/CR-7267
-8.38 1.1 0.001 0.999 2.3E-04 U-233 P
2 S
Truncated lognormal-n NUREG/CR-7267
-7.85 0.5 0.001 0.999 3.9E-04 U-234 P
2 S
Truncated lognormal-n NUREG/CR-7267
-7.85 0.5 0.001 0.999 3.9E-04 U-235 P
2 S
Truncated lognormal-n NUREG/CR-7267
-7.85 0.5 0.001 0.999 3.9E-04 U-236 P
2 S
Truncated lognormal-n NUREG/CR-7267
-7.85 0.5 0.001 0.999 3.9E-04 Milk Transfer Factors (pCi/L)/(pCi/d): Input values not used - No contaminated milk ingestion pathway Ac-227 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.12 0.9 0.001 0.999 2.0E-06 Am-241 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.12 0.7 0.001 0.999 2.0E-06 Am-243 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.12 0.7 0.001 0.999 2.0E-06 C-14 P
2 S
Truncated lognormal-n NUREG/CR-7267
-4.4 0.9 0.001 0.999 1.2E-02 Cm-243 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.12 0.9 0.001 0.999 2.0E-06 Cm-244 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.12 0.9 0.001 0.999 2.0E-06 Co-60 P
2 S
Truncated lognormal-n NUREG/CR-7267
-9.12 0.7 0.001 0.999 1.1E-04 Cs-137 P
2 D
7.4E-03 75th percentile Eu-152 P
2 S
Truncated lognormal-n NUREG/CR-7267
-9.72 0.9 0.001 0.999 6.0E-05 Eu-154 P
2 S
Truncated lognormal-n NUREG/CR-7267
-9.72 0.9 0.001 0.999 6.0E-05 Fe-55 P
2 S
Truncated lognormal-n NUREG/CR-7267
-10.26 0.7 0.001 0.999 3.5E-05 Gd-152 P
2 S
Truncated lognormal-n NUREG/CR-7267
-9.72 0.9 0.001 0.999 6.0E-05 H-3 P
2 S
Truncated lognormal-n NUREG/CR-7267
-4.6 0.9 0.001 0.999 1.0E-02 Mn-54 P
2 S
Truncated lognormal-n NUREG/CR-7267
-10,1 1.6 0.001 0.999 4.1E-05
RSCS TSD 25-090 Revision 0 Page 19 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Nb-94 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.12 0.7 0.001 0.999 2.0E-06 Ni-63 P
2 D
3.2E-02 75th percentile Np-237 P
2 S
Truncated lognormal-n NUREG/CR-7267
-11.51 0.7 0.001 0.999 1.0E-05 Pa-231 P
2 S
Truncated lognormal-n NUREG/CR-7267
-12.21 0.9 0.001 0.999 5.0E-06 Pb-210 P
2 S
Truncated lognormal-n NUREG/CR-7267
-8.11 0.9 0.001 0.999 3.0E-04 Po-210 P
2 S
Truncated lognormal-n NUREG/CR-7267
-8.47 0.6 0.001 0.999 2.1E-04 Pu-238 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.82 0.5 0.001 0.999 1.0E-06 Pu-239 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.82 0.5 0.001 0.999 1.0E-06 Pu-240 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.82 0.5 0.001 0.999 1.0E-06 Pu-241 P
2 S
Truncated lognormal-n NUREG/CR-7267
-13.82 0.5 0.001 0.999 1.0E-06 Ra-226 P
2 S
Truncated lognormal-n NUREG/CR-7267
-7.88 0.8 0.001 0.999 3.8E-04 Ra-228 P
2 S
Truncated lognormal-n NUREG/CR-7267
-7.88 0.8 0.001 0.999 3.8E-04 Sb-125 P
2 S
Truncated lognormal-n NUREG/CR-7267
-10.18 0.9 0.001 0.999 3.8E-05 Sr-90 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.65 0.5 0.001 0.999 1.3E-03 Tc-99 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.91 0.7 0.001 0.999 1.0E-03 Te-125m P
2 S
Truncated lognormal-n NUREG/CR-7267
-7.99 0.9 0.001 0.999 3.4E-04 Th-228 P
2 S
Truncated lognormal-n NUREG/CR-7267
-12.21 0.9 0.001 0.999 5.0E-06 Th-229 P
2 S
Truncated lognormal-n NUREG/CR-7267
-12.21 0.9 0.001 0.999 5.0E-06 Th-230 P
2 S
Truncated lognormal-n NUREG/CR-7267
-12.21 0.9 0.001 0.999 5.0E-06 Th-232 P
2 S
Truncated lognormal-n NUREG/CR-7267
-12.21 0.9 0.001 0.999 5.0E-06 U-233 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.32 1.3 0.001 0.999 1.8E-03 U-234 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.32 1.3 0.001 0.999 1.8E-03 U-235 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.32 1.3 0.001 0.999 1.8E-03 U-236 P
2 S
Truncated lognormal-n NUREG/CR-7267
-6.32 1.3 0.001 0.999 1.8E-03 Bioaccumulation Factors for Fish ((pCi/kg)/(pCi/L))
Ac-227 P
2 S
Lognormal-n NUREG/CR-7267 3.2 1.1 2.5E+01 Am-241 P
2 S
Lognormal-n NUREG/CR-7267 5.5 1.1 2.4E+02 Am-243 P
2 S
Lognormal-n NUREG/CR-7267 5.5 1.1 2.4E+02 C-14 P
2 S
Lognormal-n NUREG/CR-7267 13.0 1.1 4.4E+05 Cm-243 P
2 S
Lognormal-n NUREG/CR-7267 3.4 1.1 3.0E+01
RSCS TSD 25-090 Revision 0 Page 20 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 Cm-244 P
2 S
Lognormal-n NUREG/CR-7267 3.4 1.1 3.0E+01 Co-60 P
2 S
Lognormal-n NUREG/CR-7267 4.3 0.9 7.4E+01 Cs-137 P
2 S
Lognormal-n NUREG/CR-7267 7.8 0.9 2.4E+03 Eu-152 P
2 S
Lognormal-n NUREG/CR-7267 4.9 1.6 1.3E+02 Eu-154 P
2 S
Lognormal-n NUREG/CR-7267 4.9 1.6 1.3E+02 Fe-55 P
2 S
Lognormal-n NUREG/CR-7267 5.1 1.9 1.6E+02 Gd-152 P
2 S
Lognormal-n NUREG/CR-7267 3.4 1.1 3.0E+01 H-3 P
2 S
Lognormal-n NUREG/CR-7267 0
0.1 1.0E+00 Mn-54 P
2 S
Lognormal-n NUREG/CR-7267 5.5 1.9 2.4E+02 Nb-94 P
2 S
Lognormal-n NUREG/CR-7267 5.7 1.1 3.0E+02 Ni-63 P
2 S
Lognormal-n NUREG/CR-7267 3.0 0.6 2.0E+01 Np-237 P
2 S
Lognormal-n NUREG/CR-7267 3.0 1.1 2.0E+01 Pa-231 P
2 S
Lognormal-n NUREG/CR-7267 2.3 1.1 1.0E+01 Pb-210 P
2 S
Lognormal-n NUREG/CR-7267 3.2 1.1 2.5E+02 Po-210 P
2 S
Lognormal-n NUREG/CR-7267 3.6 1.5 3.7E+01 Pu-238 P
2 S
Lognormal-n NUREG/CR-7267 10.0 1.0 2.2E+04 Pu-239 P
2 S
Lognormal-n NUREG/CR-7267 10.0 1.0 2.2E+04 Pu-240 P
2 S
Lognormal-n NUREG/CR-7267 10.0 1.0 2.2E+04 Pu-241 P
2 S
Lognormal-n NUREG/CR-7267 10.0 1.0 2.2E+04 Ra-226 P
2 S
Lognormal-n NUREG/CR-7267 1.4 1.9 4.1E+00 Ra-228 P
2 S
Lognormal-n NUREG/CR-7267 1.4 1.9 4.1E+00 Sb-125 P
2 S
Lognormal-n NUREG/CR-7267 3.6 1.5 3.7E+01 Sr-90 P
2 S
Lognormal-n NUREG/CR-7267 1.1 1.4 3.0E+00 Tc-99 P
2 S
Lognormal-n NUREG/CR-7267 3.0 1.1 2.0E+01 Te-125m P
2 S
Lognormal-n NUREG/CR-7267 5.0 0.4 1.5E+02 Th-228 P
2 S
Lognormal-n NUREG/CR-7267 4.6 1.1 9.9E+01 Th-229 P
2 S
Lognormal-n NUREG/CR-7267 4.6 1.1 9.9E+01 Th-230 P
2 S
Lognormal-n NUREG/CR-7267 4.6 1.1 9.9E+01 Th-232 P
2 S
Lognormal-n NUREG/CR-7267 4.6 1.1 9.9E+01 U-233 P
2 S
Lognormal-n NUREG/CR-7267 0.0 2.5 1.0E+00
RSCS TSD 25-090 Revision 0 Page 21 Soil DCGL Values Assuming Residential Scenario With Drinking Water Values and Bases for RESRAD-Onsite Parameters for Oyster Creek DCGL Calculations Residential Scenario with Drinking Water Parameter (unit)
Typea Priorityb Treatmentc Value/Distribution Basis Distribution's Statistical Parametersd Median/Mean 1
2 3
4 U-234 P
2 S
Lognormal-n NUREG/CR-7267 0.0 2.5 1.0E+00 U-235 P
2 S
Lognormal-n NUREG/CR-7267 0.0 2.5 1.0E+00 U-236 P
2 S
Lognormal-n NUREG/CR-7267 0.0 2.5 1.0E+00 Bioaccumulation Factors for Crustacea/ Mollusks ((pCi/kg)/(pCi/L)) RESRAD default value for each radionuclide applied Graphics Parameters Number of points 32 RESRAD Default Spacing log RESRAD Default Time integration parameters Maximum number of points for dose 17 RESRAD Default
RSCS TSD 25-090 Revision 0 Page 22 Soil DCGL Values Assuming Residential Scenario With Drinking Water 4 Results DCGL values provided in Table 3 were calculated as follows:
DCGL, pCi/g = (25 mrem/y)/(peak of the mean (POM) dose, mrem/y per 1pCi/g)
Table 3: DCGL Values - Residential Scenario with Drinking Water ROC POM Dose (mrem/y)
DCGL (pCi/g)
ROC POM Dose (mrem/y)
DCGL (pCi/g)
Am-241 9.98E-02 2.51E+02 Nb-94 3.59E+00 6.96E+00 C-14 1.42E-01 1.77E+02 Ni-63 2.17E-04 1.15E+05 Cm-243 2.61E-01 9.59E+01 Np-237 8.36E+00 2.99E+00 Cm-244 4.68E-02 5.35E+02 Pu-238 7.52E-02 3.33E+02 Co-60 5.66E+00 4.41E+00 Pu-239 1.69E-01 1.48E+02 Cs-137 1.28E+00 1.96E+01 Pu-240 1.49E-01 1.68E+02 Eu-152 2.55E+00 9.82E+00 Pu-241 2.94E-03 8.50E+03 Eu-154 2.75E+00 9.08E+00 Sb-125 8.09E-01 3.09E+01 Fe-55 1.15E-05 2.18E+06 Sr-90 3.64E-01 6.88E+01 H-3 7.32E-03 3.42E+03 Tc-99 3.29E-01 7.60E+01 Mn-54 1.32E+00 1.89E+01 5 References
- 1. TSD 25-089, Soil DCGL Values Assuming the Residential Scenario Without Drinking Water, September 2025
- 2. TSD 25-032, Radionuclides of Concern in Support of the Oyster Creek Station License Termination Plan, Revision 0
- 3. ENG-OCS-008, Derived Concentration Guideline Levels Values for Soil - Industrial Use - Oyster Creek Station, July 26, 2023
- 4. ENG-OCS-001, RESRAD-Onsite Input Parameter Sensitivity Analysis - Oyster Creek Station, April 4, 2023
- 5. NUREG/CR-6697, Development of Probabilistic RESRAD 6.0 and RESRAD-BUILD 3.0 Computer Codes, Nov. 2000
- 6. NUREG/CR-7267, Default Parameter Values and Distribution in RESRAD-ONSITE V7.2, RESRAD-BUILD V3.5, and RESRAD-OFFSITE V4.0 Computer Codes, Feb. 2020
RSCS TSD 25-090 Revision 0 Page 23 Soil DCGL Values Assuming Residential Scenario With Drinking Water Pages from the RESRAD-Onsite reports showing the POM dose values by radionuclide:
Am-241 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/07/2025 12:46 Page 20 Probabilistic results summary : OCS_Am241_Res DW File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\AM241\\AM241_RES DW DCGL.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 9.977E-02 C-14 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/05/2025 11:43 Page 20 Probabilistic results summary : OCS Res DW_ DCGL-C14 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\C-14\\OC_RES DW_DCGL_C14.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 1.415E-01 CM-243 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/07/2025 15:06 Page 21 Probabilistic results summary : OCS_Res DW_DCGL_CM243 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\CM-243\\OCS_RES DW_DCGL_CM243.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 2.608E-01 Cm-244 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/05/2025 13:17 Page 21 Probabilistic results summary : OCS_Res DW_DCGL-Cm244 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\CM-244\\OCS_RES DW_DCGL_CM244.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 4.675E-02 Co-60 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/05/2025 11:59 Page 20 Probabilistic results summary : OCS Res DW DCGL-Co60 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\CO-60\\OC_RESIDENTIAL_DCGL_CO60.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 5.664E+00 Cs-137 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/05/2025 13:32 Page 20 Probabilistic results summary : OCS Res DW_DCGL Analysis -Cs137 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\CS-137\\OC_RES DW DCGL_CS137.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 1.275E+00 Eu-152 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/05/2025 13:42 Page 20 Probabilistic results summary : OCS_Res DW_DCGL_Eu152 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\EU-152\\OCS RES DW_DCGL_EU152.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 2.546E+00
RSCS TSD 25-090 Revision 0 Page 24 Soil DCGL Values Assuming Residential Scenario With Drinking Water Eu-154 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/05/2025 14:30 Page 20 Probabilistic results summary : OCS_Res DW_DCGL_Eu154 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\EU-154\\OCS_RES DW_DCGL_EU154.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 2.752E+00 Fe-55 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/05/2025 14:45 Page 20 Probabilistic results summary : OCS_Res DW_DCGL_Fe55 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\FE-55\\OCS_RESW DW_DCGL_FE55.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 1.148E-05 H-3 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/06/2025 08:29 Page 20 Probabilistic results summary : OCS_Res DW_DCGL_H3 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\H-3\\OCS_RES DW_DCGL_H3.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 2.219E+00 7.320E-03 Mn-54 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/06/2025 08:54 Page 20 Probabilistic results summary : OCS_Res DW_DCGL_Mn54 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\MN-54\\OCS_RES DW_DCGL_MN54.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 1.323E+00 Nb-94 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/06/2025 09:07 Page 20 Probabilistic results summary : OCS_Res DW_DCGL_Nb94 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\NB-94\\OCS_RES DW_DCGL_NB94.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 3.591E+00 Ni-63 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/06/2025 09:17 Page 20 Probabilistic results summary : OCS-Res DW_DCGL_Ni63 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\NI-63\\OCS_RES DW_DCGL_NI63.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 2.169E-04 Np-237 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/06/2025 09:26 Page 20 Probabilistic results summary : OCS_Res DW_DCGL_Np237 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\NP-237\\OCS_RES DW_DCGL_NP237.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 1.194E+02 8.363E+00
RSCS TSD 25-090 Revision 0 Page 25 Soil DCGL Values Assuming Residential Scenario With Drinking Water Pu-238 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/06/2025 11:06 Page 21 Probabilistic results summary : OCS_Res DW_DCGL_Pu238 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\PU-238\\OCS_RES DW_DCGL_PU238.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 7.516E-02 Pu-239 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/07/2025 11:48 Page 20 Probabilistic results summary : OCS -Res Dw_DCGL-Pu239 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\PU-239\\OCS_RES DW_DCGL_PU239.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 1.000E+03 1.693E-01 Pu-240 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/05/2025 16:12 Page 21 Probabilistic results summary : OCS_Res DW_DCGL_Pu240 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\PU-240\\OCS_RES DW_DCGL_PU240.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 1.000E+03 1.487E-01 Pu-241 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/07/2025 13:38 Page 21 Probabilistic results summary : OCS Res DW_ DCGL-Pu241 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\PU-241\\OCS_RES DW_DCGL_PU241.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 5.380E+01 2.940E-03 Sb-125 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/06/2025 11:45 Page 20 Probabilistic results summary : OCS Res DW_SDCGL-Sb-125 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\SB-125\\OCS_RES DW_DCGL_SB125.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 8.093E-01 Sr-90 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/06/2025 11:56 Page 20 Probabilistic results summary : OCS_Res DW_DCGL-Sr90 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\SR-90\\OCS_RES DW_DCGL_SR90.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 3.636E-01 Tc-99 1RESRAD-ONSITE, Version 7.2 T<< Limit = 30 days 08/06/2025 12:23 Page 20 Probabilistic results summary : OCS-Res Dw-DCGL_Tc99 File : C:\\RESRAD_FAMILY\\ONSITE\\7.2\\USERFILES\\RES SOIL DCGL DW\\TC-99\\OC_RES DW_DCGL_TC99.RAD Peak of the mean dose (averaged over observations) at graphical times Repetition Time of peak mean dose Peak mean dose Years mrem/yr 1 2.894E+00 3.290E-01