ML081990499

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License Termination Plan, Revision 1, Table of Contents
ML081990499
Person / Time
Site: Rancho Seco
Issue date: 05/31/2008
From:
Sacramento Municipal Utility District (SMUD)
To:
NRC/FSME
References
MPC&D 08-060
Download: ML081990499 (13)
v • d • e


Text

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Rancho Seco License Termination Plan Revision 1 List of Revised Sections May 2008 a

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Rancho Seco License Termination Plan Revision 1 List of Revised Sections May 2008 b

List of Revised Sections Chapter Section Page Revision 1

1.6 1-10 Minor correction / clarification 2

2.1.4.3 2-4 Revised last sentence per RAI #1 response 2

2.1.4.4 2-4 Revised first paragraph per RAI #2 response 2

2.1.10 2-24 Minor correction / clarification 2

2.2.1.1 2-25 Revised first sentence per RAI #36 to add new Reference 2-19 2

2.2.1.3 2-26 Minor correction / clarification to renumber reference 2

2.2.1.3 2-27 Revised third sentence per RAI #38 response 2

2.2.2.2 2-28 Minor correction / clarification to renumber reference 2

2.2.3 2-29 Minor correction / clarification to renumber references 2

2.2.4.1 2-30 Minor correction / clarification 2

2.2.4.2.1 2-31 Minor correction / clarification to Table 2-7 2

2.2.4.2.2 2-34 Minor correction / clarification to Table 2-8 2

2.3.1 2-35 Minor correction / clarification to renumber reference 2

2.3.1.1 2-35 Minor correction / clarification to renumber reference 2

2.4.1 2-40 Minor correction / clarification to renumber reference 2

2.4.4 2-42 Minor correction / clarification to Table 2-13 2

2.4.4 2-43 Minor correction / clarification to Table 2-13 footnote 2

2.4.7.1 2-46 Revised next of last paragraph per RAI #9 response 2

2.4.7.1 2-46 Minor correction / clarification to renumber reference 2

2.4.7.2 2-47 Revised Table 2-15 and paragraph above per RAI #10 response 2

2.4.7.2 2-47 Minor correction / clarification to renumber reference 2

2.4.7.3 2-48 Minor correction / clarification to renumber reference 2

2.5.1 2-48 Revised first paragraph per RAI #11 response 2

2.5.1 2-50 Revised Table 2-17 and paragraph above per RAI #14 response 2

2.5.1.1 2-51 Revised first paragraph per RAI #15 response 2

2.5.1.1 2-51 Revised Table 2-18 and paragraph above per RAI #16 response 2

2.5.1.2 2-52 Minor correction / clarification 2

2.5.1.2 2-52 Revised Table 2-19 and text above per RAI #17 response 2

2.5.2 2-53 Minor correction / clarification 2

2.5.3.1 2-53 Minor correction / clarification to renumber references 2

2.5.3.1 2-54 Minor correction / clarification to renumber references 2

2.5.3.1 2-54 Include statement to grout piping greater than 2.5 in diameter 2

2.5.3.1 2-54 Include conditions for grouting piping 2

2.5.3.2 2-55 Minor correction / clarification to renumber reference 2

2.5.5 2-56 Minor correction / clarifications 2

2.5.5 2-57 Minor correction / clarification to renumber reference 2

2.5.5 2-58 Minor correction / clarification to renumber reference 2

2.6 2-60 Revised paragraph per RAI #18 response 2

2.7.1 2-60 Revised paragraph per RAI #19 response 3

3.3.5 3-10 Revised paragraph per RAI #22 response 4

4.4.3.1 4-6 Revised paragraph per RAI #23 response 4

4.4.4.1 4-7 Revised second paragraph per RAI #24 response 4

4.4.4.2 4-7 Minor correction / clarification to renumber reference 4

4.4.4.3 4-8 Minor correction / clarification to renumber reference

Rancho Seco License Termination Plan Revision 1 List of Revised Sections May 2008 c

Chapter Section Page Revision 4

4.5.1.2 4-10 Minor correction / clarification to renumber reference 4

4.5.1.5 4-11 Minor correction / clarification to renumber reference in Table 4-1 4

4.8 4-15 Minor correction / clarification to renumber some references 5

5.2.2 5-9 Minor correction / clarification 5

5.2.2.3 5-11 Minor correction / clarification to Table 5-3 5

5.2.2.3 5-12 Minor correction / clarification to Table 5-4A 5

5.2.2.3 5-13 Minor correction / clarification to Table 5-4B 5

5.2.2.3 5-14 Minor correction / clarification to Table 5-4C 5

5.2.2.3 5-15 Minor correction / clarification to Table 5-4C 5

5.2.2.3 5-16 Minor correction / clarification to Table 5-4D 5

5.2.2.3 5-17 Minor correction / clarification to Table 5-4D 5

5.2.2.3 5-18 Minor correction / clarification to Table 5-4E 5

5.2.2.4 5-19 Minor correction / clarification 5

5.2.4.4 5-21 Revised last bullet and paragraph per RAI #22 response 5

5.3.2 2-22 Minor correction / clarification 5

5.3.3 5-22 Minor correction / clarification 5

5.3.3 5-22 Deleted second paragraph - no longer applicable 5

5.3.3.3 5-23 Minor correction / clarification 5

5.3.3.3.1 5-23 Minor correction / clarification 5

5.3.5.1 5-25 Minor correction / clarification 5

5.3.6.2 5-27 Minor correction / clarification 5

5.3.6.3.1 5-28 Minor correction / clarification 5

5.4.2.1 5-33 Minor correction / clarification 5

5.4.2.2 5-33 Clarrified new handling of excavated soil 5

5.4.2.4 5-34 Minor correction / clarification 5

5.4.3.1 5-36 Minor correction / clarification to Table 5-11 5

5.4.3.1 5-38 Minor correction / clarification to Table 5-12 5

5.4.3.1 5-39 Minor correction / clarification to Table 5-12 footnotes 5

5.4.3.1 5-40 Minor correction / clarification to Table 5-12 footnotes 5

5.4.3.4.3 5-43 Minor correction / clarification 5

5.4.3.4.5 5-44 Minor correction / clarification 5

5.4.3.4.5 5-45 Minor correction / clarification 5

5.4.3.4.7 5-46 Minor correction / clarification 5

5.5.2 5-46 Minor correction / clarification 5

5.5.3 5-47 Minor correction / clarification 5

5.6.1.1 5-48 Minor correction / clarification to Table 5-13 5

5.6.4 5-53 Minor correction / clarification 5

5.7 5-53 Minor correction / clarification 5

5.7.2 5-53 Minor correction / clarification 5

5.8.2.4.1 5-57 Revised second paragraph per RAI #23 response 5

5.8.2.8 5-58 Clarification - deleted certified by the vendor 5

5.8.3.1 5-59 Clarified current plan for assessments 5

Figure 5-2 5-61 Minor correction / clarification 5

5.9.1 5-62 Minor correction / clarification to procedure list 5

5.9.1 5-63 Minor correction / clarification to procedure list 6

6.3.1 6-2 Minor correction / clarification 6

6.3.2 6-4 Minor correction / clarification

Rancho Seco License Termination Plan Revision 1 List of Revised Sections May 2008 d

Chapter Section Page Revision 6

6.6.3.2 6-24 Revised reference per RAI #29 response 6

6.6.4.3 6-26 Minor correction / clarification 6

6.6.4.3 6-27 Revised Table 6-10 per RAI #30 response 6

6.6.5 6-28 Added new Reference 6-24 per RAI #34 response 6

6.6.5.1.1 6-29 Minor correction / clarification to renumber reference 6

6.6.5.3 6-32 Revised Table 6-12 per RAI #31 and #35 responses 6

6.6.6 6-33 Minor correction / clarification to renumber reference 6

6.6.7 6-34 Minor correction / clarification to renumber references 6

6.6.7 6-34 Include statement to grout piping greater than 2.5 in diameter 6

6.6.7 6-35 Pipe grouting conditions/ reference to section 2.5.3.1 6

6.7 6-35 Minor correction / clarification to renumber reference 6

6.7.2.2 6-39 Minor correction / clarification 6

6.8 6-40 Minor correction / clarification to add new Reference 6-30 6

6.8.2.4 6-44 Revised Table 6-19 per RAI #33 response 6

6.9 6-61 Added new references and renumbered as needed 6

6.9 6-62 Added new references and renumbered as needed

Rancho Seco License Termination Plan Revision 1 Table of Contents May 2008 i

TABLE OF CONTENTS 1.0 GENERAL INFORMATION.......................................................................................................1-1 1.1.

Purpose..........................................................................................................................................1-1 1.2.

Scope.............................................................................................................................................1-1 1.3.

Historical Background and Site Description.................................................................................1-2 1.4.

Decommissioning Approach.........................................................................................................1-3 1.5.

Plan Summary...............................................................................................................................1-5 1.6.

License Termination Plan Change Process...................................................................................1-9 1.7.

License Termination Plan Information Contact..........................................................................1-10 1.8.

References...................................................................................................................................1-10 2.0 SITE CHARACTERIZATION.....................................................................................................2-1 2.1 Historical Site Assessment Summary...........................................................................................2-1 2.2 Hydrogeological Investigations..................................................................................................2-24 2.3 Pre-Characterization Scoping Surveys........................................................................................2-35 2.4 Site Characterization Survey Methods........................................................................................2-40 2.5 Summary of Initial Characterization Survey (ICS) Results........................................................2-48 2.6 Continuing Characterization.......................................................................................................2-60 2.7 Summary.....................................................................................................................................2-60 2.8 References...................................................................................................................................2-92 3.0 IDENTIFICATION OF REMAINING DECOMMISSIONING ACTIVITIES...........................3-1 3.1 Introduction...................................................................................................................................3-1 3.2 Completed Decommissioning Activities and Tasks.....................................................................3-2 3.3 Future Decommissioning Activities.............................................................................................3-7 3.4 Radiological Impacts of Decontamination and Dismantlement Activities.................................3-10 3.5 Site Description after License Release........................................................................................3-14 3.6 Coordination with Outside Entities.............................................................................................3-14 3.7 References...................................................................................................................................3-16 4.0 SITE REMEDIATION PLAN......................................................................................................4-1 4.1 Remediation Actions and ALARA Evaluations...........................................................................4-1 4.2 Remediation Actions.....................................................................................................................4-1 4.3 Remediation Activities Impact on the Radiation Protection Program..........................................4-4 4.4 ALARA Evaluation......................................................................................................................4-5 4.5 Unit Cost Estimates......................................................................................................................4-9 4.6 Radionuclides Considered for ALARA Calculations.................................................................4-14 4.7 ALARA Calculation Results.......................................................................................................4-15 4.8 References...................................................................................................................................4-15 5.0 FINAL STATUS SURVEY PLAN..............................................................................................5-1 5.1 Introduction...................................................................................................................................5-1 5.2 Development of Survey Plan........................................................................................................5-5 5.3 Survey Design and Data Quality Objectives...............................................................................5-21

Rancho Seco License Termination Plan Revision 1 Table of Contents May 2008 ii 5.4 Survey Methods and Instrumentation.........................................................................................5-31 5.5 Data Collection and Processing..................................................................................................5-46 5.6 Data Assessment and Compliance..............................................................................................5-48 5.7 Reporting Format........................................................................................................................5-53 5.8 Final Status Survey Quality Program.........................................................................................5-54 5.9 References...................................................................................................................................5-62 6.0 COMPLIANCE WITH THE RADIOLOGICAL CRITERIA FOR LICENSE TERMINATION6-1 6.1 Site Release Criteria......................................................................................................................6-1 6.2 Site Conditions..............................................................................................................................6-1 6.3 Source Term Assumptions............................................................................................................6-2 6.4 Dose Modeling Considerations.....................................................................................................6-5 6.5 Computational Model Used for Dose Calculations......................................................................6-9 6.6 Derived Concentration Guideline Levels (DCGLs)....................................................................6-10 6.7 Derivation of Area Factors..........................................................................................................6-35 6.8 Comparison of Alternative Exposure Scenarios for Impacted Area Soils..................................6-40 6.9 References...................................................................................................................................6-60 7.0 UPDATE OF SITE-SPECIFIC DECOMMISSIONING COSTS.................................................7-1 7.1 Introduction...................................................................................................................................7-1 7.2 Decommissioning Cost Estimate..................................................................................................7-3 7.3 Decommissioning Funding Plan...................................................................................................7-6 7.4 References.....................................................................................................................................7-9 8.0 SUPPLEMENT TO THE ENVIRONMENTAL REPORT..........................................................8-1 8.1 Summary.......................................................................................................................................8-1 8.2 Introduction and Purpose..............................................................................................................8-1 8.3 Site Description After Unrestricted Release.................................................................................8-4 8.4 Impacts to the Post-Shutdown Decommissioning Activities Report............................................8-4 8.5 Rancho Seco Site Environmental Description..............................................................................8-5 8.6 Environmental Effects Of Decommissioning.............................................................................8-15 8.7 Overview Of Regulations Governing Decommissioning Activities and Site Release................8-24

8.8 REFERENCES

...........................................................................................................................8-32 TABLES 2-1 Personnel Observations Summary................................................................................................2-5 2-2 Operational History Summary......................................................................................................2-7 2-3 Discharge Canal Sediment..........................................................................................................2-12 2-4 Depression Area Soil Vendor Laboratory Results......................................................................2-14 2-5 Area Designations.......................................................................................................................2-24 2-6 Well Construction and Water Elevation Data.............................................................................2-26 2-7 General Minerals Results from Analyses of Groundwater.........................................................2-31

Rancho Seco License Termination Plan Revision 1 Table of Contents May 2008 iii 2.8 Groundwater Monitoring Radiochemical Results.......................................................................2-34 2-9 Effect of Temporal Variability....................................................................................................2-38 2-10 Effect of Spatial Variability........................................................................................................2-39 2-11 Gross Activity Variability Due to Plant Operations...................................................................2-40 2-12 Cs-137 Variability Due to Plant Operations...............................................................................2-40 2-13 Typical On-Site Characterization Detection Sensitivities...........................................................2-42 2-14 Vendor Laboratory Standard MDA Values................................................................................2-44 2-15 Specific Soil Contamination Investigation Locations.................................................................2-47 2-16 Concrete Structure Nuclide Fraction..........................................................................................2-49 2-17 Site Structures Below the DCGL................................................................................................2-50 2-18 Special Area Locations...............................................................................................................2-51 2-19 Activated Nuclide Fractions For Bioshield Concrete and Rebar................................................2-52 2-20 Embedded Pipe Gamma-Emitting Nuclide Fractions................................................................2-54 2-21 Embedded Piping Systems..........................................................................................................2-55 2-22 Buried Piping Nuclide Fractions and Ratio To Cs-137..............................................................2-55 2-23 Buried Piping Systems................................................................................................................2-56 2-24 Non-Impacted Systems...............................................................................................................2-56 2-25 Impacted Soil Area Characterization Results.............................................................................2-57 2-26 Soil Nuclide Fractions.................................................................................................................2-57 2-27 Spent Fuel Cooler Pad Residual Soil Concentrations Comparison To NRC/ORISE Results....2-58 2-28 Spent Fuel Pool Subsoil Residual Soil Concentrations, NRC/ORISE Results...........................2-58 3-1 Schedule of Remaining Major Activities......................................................................................3-7 3-2 Solid Waste Effluent Release Report Summary.........................................................................3-12 3-3 Liquid Waste Effluent Releases..................................................................................................3-13 3-4 Gaseous Waste Effluent Releases...............................................................................................3-14 4-1 Acceptable Parameter Values for Use in ALARA Analyses......................................................4-11 4-2 ALARA Evaluation Results........................................................................................................4-15 5-1 Single Nuclide DCGLW Values for Detectable Radionuclides in Soil........................................5-6 5-2 Calculated Structural Surface Single Nuclide DCFs and DCGLWs..............................................5-7 5-3 Area Designations.......................................................................................................................5-11 5-4A Survey Unit Classifications - General Open Land Areas...........................................................5-12 5-4B Survey Unit Classifications - Site Surface Soils.........................................................................5-13 5-4C Survey Unit Classification - Paved Surfaces and Foundation Pads...........................................5-14 5-4D Survey Area Characterization-Structures....................................................................................5-16 5-4E Survey Area Characterization - Remaining Buried and Embedded Pipe...................................5-18 5-5 Suggested Survey Unit Areas.....................................................................................................5-19 5-6 Scan Measurements....................................................................................................................5-22 5-7 Investigation Levels....................................................................................................................5-27 5-8 Calculated Surface Soil Area Factors.........................................................................................5-28 5-9 Calculated Structural Surface Area Factor Values.....................................................................5-29 5-10 Investigation Actions for Individual Survey Unit Measurements...............................................5-30

Rancho Seco License Termination Plan Revision 1 Table of Contents May 2008 iv 5-11 Typical FSS Survey Instrumentation..........................................................................................5-36 5-12 Typical FSS Detection Sensitivities............................................................................................5-38 5-13 Interpretation of Sample Measurements When the WRS Test Is Used......................................5-48 5-14 Interpretation of Sample Measurements When the Sign Test Is Used........................................5-49 6-1 Site-Specific Suite of Radionuclides for Use at Rancho Seco......................................................6-5 6-2 Sensitivity Analysis Radionuclide Concentrations.....................................................................6-14 6-3 Potential Parameter Correlations................................................................................................6-15 6-4 Discounted Radionuclide Concentrations for Dose Evaluation..................................................6-17 6-5 Single Nuclide DCGL Values for Detectable Radionuclides.....................................................6-18 6-6 Maximum Allowable Radionuclide Mixture Concentrations.....................................................6-20 6-7 Peak of the Mean Dose vs Contaminated Layer Thickness........................................................6-20 6-8 Peak of the Mean Dose vs Discrete Contamination Pocket Depth.............................................6-21 6-9 Calculated Structural Surface Single Nuclide DCFs and DCGLs..............................................6-24 6-10 Bulk Material Single Nuclide DCF and DCGL Values..............................................................6-27 6-11 Containment Building Surface Single Nuclide DCF and DCGL Values for the Industrial Worker Building Inspection Scenario......................................................................................................6-30 6-12 Containment Building Surface Single Nuclide DCF and DCGL Values - Renovation/Demolition Scenario......................................................................................................................................6-32 6-13 Embedded Pipe Annual Dose Rate By Building........................................................................6-34 6-14 Single Nuclide DCGL Values for Detectable Radionuclides.....................................................6-36 6-15 Calculated Peak-of-the-Mean DSR Values.................................................................................6-37 6-16 Calculated Surface Soil Area Factors.........................................................................................6-38 6-17 Calculated Mean DSR Values for Structural Surface Area Factors...........................................6-39 6-18 Calculated Surface Area Factor Values......................................................................................6-40 6-19 Calculated Dose Using a Resident Farmer Scenario..................................................................6-44 7-1 Summary of Remaining Decommissioning Costs in Year 2005 Dollars......................................7-6 8-1 Projected Population Growth........................................................................................................8-6 8-2 Expected Extreme Wind Speeds...................................................................................................8-9 8-3 Precipitation Climatology...........................................................................................................8-10 8-4 Precipitation Intensity.................................................................................................................8-10 FIGURES 2-1 Rancho Seco Industrial Area Map..............................................................................................2-61 2-2 Impacted Area.............................................................................................................................2-62 2-3 Area Designations.......................................................................................................................2-63 2-4 Locations of Borings Drilled and Sampled at Rancho Seco.......................................................2-64 2-5 Potentiometric Surface Map for Groundwater Beneth Rancho Seco, December 2005..............2-65 2-6 Piper Diagram for Groundwater Concentrations Beneath Rancho Seco....................................2-66 2-7 Stiff Diagrams of Cation and Anion Concentrations in Groundwater Beneath and Upgradient from Ranch Seco.........................................................................................................................2-67

Rancho Seco License Termination Plan Revision 1 Table of Contents May 2008 v

2-8 Spent Fuel Cooler Pad Soil Characterization Locations............................................................2-68 2-9 Tank Farm Soil Characterization Locations, 810001 and 810002..............................................2-69 2-10 Spent Fuel Building-Diesel Generator Room Gap Soil Characterization Location, 826000......2-70 2-11 Effluent Water Course Soil Characterization Locations, 100001...............................................2-71 2-12 RHUT Area Soil Characterization Locations, 837000...............................................................2-72 2-13 Old Bechtel Building Soil Characterization Locations, 800004.................................................2-73 2-14 Auxiliary Building -20 and -29 El. Concrete Characterization Sample Locations, 813000...2-74 2-15 Auxiliary Building -47 El. Concrete Characterization Sample Locations, 813000..................2-75 2-16 Fuel Storage Building Concrete Characterization Sample Locations, 812000...........................2-76 2-17 Reactor Building 40 El Concrete Characterization Sample Locations, 811000........................2-77 2-18 Reactor Building 0 El. Concrete Characterization Locations, 811000......................................2-78 2-19 Reactor Building -27 El. Concrete Characterization Locations, 811000..................................2-79 2-20 Turbine Building -10 El. Concrete Characterization Locations, 826000..................................2-80 2-21 Turbine Building 0 El. Concrete Characterization Locations, 826000......................................2-81 2-22 Reactor Building Activated Concrete Characterization Locations, 811000..............................2-82 2-23 Activation Depth Associated with Each Core at the Respective Elevations...............................2-83 2-24 Eu-152 Concentration for the Mid-Core Region........................................................................2-83 2-25 Turbine Building Grade Level Drains, 826000..........................................................................2-84 2-26 Turbine Building 40 El. Drains, 826000...................................................................................2-85 2-27 Auxiliary Building -20El. Drains..............................................................................................2-86 2-28 Auxiliary Building -47 El. Drains.............................................................................................2-87 2-29 Spent Fuel Pool Drains...............................................................................................................2-88 2-29a Spent Fuel Pool Drains 0 Elevation...........................................................................................2-89 2-30 Reactor Building Drains -27 El..................................................................................................2-90 2-31 Fuel Storage Building Soil.........................................................................................................2-91 3-1 Dose-Estimate and Actual (Person-Rem)...................................................................................3-15 5-1 FSS Process Overview................................................................................................................5-60 5-2 Area Designations.......................................................................................................................5-61 6-1 Rancho Seco Reservoir and Recreation Area.............................................................................6-46 6-2 Rancho Seco Switchyard and ISFSI...........................................................................................6-47 6-3 Rancho Seco Photovoltaic Generating Facility..........................................................................6-48 6-4 Aerial Photograph of the Combined Cycle Cosumnes Power Plant...........................................6-49 6-5 RESRAD Parameter Selection Process.......................................................................................6-50 6-6 Peak of the Mean Dose vs Contaminated Layer Thickness for Principal Dose Contributors....6-51 6-7 Peak of the Mean Dose vs Contaminated Layer Thickness for Minor Dose Contributors.........6-52 6-8 Peak of the Peak of the Mean Dose vs Discrete Contamination Pocket Depth..........................6-53 6-9 Time of the Peak of the Mean Dose vs Discrete Contamination Pocket Depth..........................6-54 6-10 RESRAD-BUILD Parameter Selection Process.........................................................................6-55 6-11 Surface Soil Area Factors for Gamma Emitters..........................................................................6-56 6-12 Surface Soil Area Factors for Beta Emitters...............................................................................6-57 6-13 Structural Surface Area Factors..................................................................................................6-58

Rancho Seco License Termination Plan Revision 1 Table of Contents May 2008 vi 6-14 Calculated Dose Using a Resident Farmer Scenario..................................................................6-59 7-1 Summary of Remaining Decommissioning Costs in Year 2005 Dollars......................................7-8 8-1 Rancho Seco Site Map................................................................................................................8-27 8-2 Wind Roses.................................................................................................................................8-29 8-3 Yearly Wind Roses.....................................................................................................................8-30 8-4 Ground Water Contour Map.......................................................................................................8-31 APPENDICES 2-A Miscellaneous Historical Construction Photographs..................................................................2-94 2-B Site and Structure Drawings With Sample and Survey Locations............................................2-112 4-A Unit Cost Values.........................................................................................................................4-17 6-A RESRAD Parameters for Soil Dose Modeling Probabilistic Analysis.......................................6-63 6-B RESRAD Sensitivity Analysis Distribution Parameters.............................................................6-79 6-C RESRAD Distribution Parameter Sensitivity Analysis Results..................................................6-83 6-D RESRAD Parameters for Probabilistic Analysis of Discounted Radionuclides.........................6-85 6-E Distribution Parameters and Sensitivity Analysis Results for Discounted Radionuclides.......6-111 6-F Parameters for Probabilistic Analysis of Varying Contamination Layer Thickness................6-123 6-G Dose Modeling Distribution Parameters - Industrial Worker Scenario...................................6-139 6-H Parameters for Probabilistic Analysis of Discrete Pockets of Contamination..........................6-143 6-I Distribution Parameters for Analysis of Discrete Pockets of Contamination...........................6-159 6-J RESRAD-BUILD Parameters for Rancho Seco Structural Surfaces Sensitivity Analysis......6-161 6-K Sensitivity Analysis Distribution Parameters and Sensitive Parameter Results.......................6-171 6-L Radionuclide Specific RESRAD-BUILD Sensitive Parameters...............................................6-173 6-M Parameters for Rancho Seco Structural Surfaces DCGL Derivation........................................6-177 6-N Parameters for Rancho Seco Bulk Material Sensitivity Analysis.............................................6-189 6-O Distribution Parameters for Analysis of Bulk Material and Sensitive Parameter Results........6-195 6-P RESRAD-BUILD Input Parameters for Derivation of Containment Inspection Single Nuclide DCFs.........................................................................................................................................6-197 6-Q Parameters for Containment Building DCGL Sensitivity Analysis..........................................6-211 6-R Statistical Distribution Parameters and Sensitive Parameter Results for Containment Building DCGLs......................................................................................................................................6-225 6-S Parameters for Surface Soil Area Factor Dose Modeling Probabilistic Analysis.....................6-231 6-T Surface Soil Area Factor Dose Modeling Distribution Parameters..........................................6-247 6-U Parameters for Structural Surface Area Factor Derivation.......................................................6-251 6-V Distribution Parameters for Structural Surface Area Factor Derivation...................................6-257 6-W Parameters for Sensitivity Analysis of Detected Radionuclides - Resident Farmer Scenario.6-259 6-X Sensitivity Analysis Distribution Parameters and Sensitive Parameter Results for Detected Radionuclides - Resident Farmer Scenario...............................................................................6-277 6-Y Parameters for Sensitivity Analysis of Discounted Radionuclides, Resident Farmer Scenario6-281

Rancho Seco License Termination Plan Revision 1 Table of Contents May 2008 vii 6-Z Distribution Parameters and Sensitive Parameter Results for Discounted Radionuclides, Resident Farmer Scenario.........................................................................................................6-317

Rancho Seco License Termination Plan Revision 1 Table of Contents May 2008 viii This page intentionally left blank

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