NG-10-0067, Document 82A9634, Revision 1, Decommissioning Cost Estimate Study for the Duane Arnold Energy Center, Enclosure 3

Document 82A9634, Revision 1, Decommissioning Cost Estimate Study for the Duane Arnold Energy Center, Enclosure 3

ML100540029
Person / Time
Site:	Duane Arnold
Issue date:	01/27/2010
From:	Walker L EnergySolutions
To:	Duane Arnold, Office of Nuclear Reactor Regulation
References
137079, NG-10-0067 82A9634, Rev 1
Download: ML100540029 (199)

Text

1 ENCLOSURE 3 Decommissioning Cost Estimate Study for the Duane Arnold Energy Center Revision 1 188 Pages Follow

ENERGYSOLUTIONIS Document No. 82A9634 Decommissioning Cost Estimate Study for the Duane Arnold Energy Center Project No. 137079 Revision 1 Prepared for:

FPL Energy Duane Arnold, LLC 3277 DAEC Road Palo, IA 52324 Prepared by:

EnergySolutions, LLC Commercial Decommissioning Services Division 100 Mill Plain Road, Second Floor, M/B 106 Danbury, CT 06811 Authored By: 1/27/10 Lisa J.S. W/ker, Senior Cost Engineer Date Approved By: 1/27/10 Barry Sims, Pre~ect Manager Date D New Report D Title Change X Report Revision D Report Rewrite Effective Date 1/27/10 Electronic documents, once printed, are uncontrolled and may become outdated.

Refer to Document Control authority for the correct revision.

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 TABLE OF CONTENTS Section Page 1.0 EXECUTIVE

SUMMARY

............................................................................................ 4 2.0 IN TR O DU CTION .......................................................................................................... 8 2.1 Study O bjective ................................................................................................... 8 2.2 Regulatory Fram ew ork ....................................................................................... 9 3.0 STUDY METHODOLOGY .......................................................................................... 11 3.1 G eneral D escription ......................................................................................... 11 3.2 Schedule A nalysis ............................................................................................ 11 3.3 D ecom m issioning Staff ..................................................................................... 12 3.4 W aste D isposal ................................................................................................. 13 3.5 Final Status Survey ............................................................................................ 16 3.6 C ontingency ..................................................................................................... 16 3.7 C ost R eporting ................................................................................................... 17 4.0 SITE SPECIFIC TECHNICAL APPROACH ............................................................. 18 4.1 Facility D escription .......................................................................................... 18 4.2 Decommissioning Periods for Scenario 1........................................................ 18 4.3 Decommissioning Periods for Scenario 2 ....................................................... 20 4.4 Decommissioning Periods for Scenario 3 ........................................................ 22 4.5 Decommissioning Periods for Scenario 4 ........................................................ 24 4.6 D ecomm issioning Staff .................................................................................. 26 4.7 Spent Fuel Management Staff .......................................................................... 26 4.8 Spent Fuel Shipm ents ....................................................................................... 27 5.0 BASES OF ESTIMATE AND KEY ASSUMPTIONS ............................................... 28 6.0 STUDY RESULTS BY SCENARIO ........................................................................... 33 6.1 Scenario 1 - Base Case ..................................................................................... 33 6.2 Scenario 2 - Base Case, Except SAFSTOR ................................................... 40 6.3 Scenario 3 - Base Case, Except License Extension ......................................... 47 6.4 Scenario 4 - Base Case, Except SAFSTOR and License Extension ................ 51 7.0 REFEREN CES .......................................................................................................... 58 FIGURES Figure 1-1 Scenario 1 Summary Schedule ......................................................................... 7 Figure 6-1 Scenario 1 Summary Schedule ...................................................................... 35 Figure 6-2 Scenario 2 Summary Schedule ...................................................................... 41 Figure 6-3 Scenario 3 Summary Schedule ...................................................................... 48 Figure 6-4 Scenario 4 Summary Schedule ...................................................................... 52

.Page 2 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 TABLES Table 1-1 License Termination Cost Summary by Scenario .............................................. 5 Table 1-2 Spent Fuel Cost Summary by Scenario ............................................................. 6 Table 1-3 Greenfield Cost Summary by Scenario .............................................................. 6 Table 6-1 Scenario 1 Cost and Schedule Summary .......................................................... 36 Table 6-2 Scenario 1 DAEC Staff Levels ......................................................................... 37 Table 6-3 Scenario 1 DGC Staff Levels ............................................................................ 38 Table 6-4 Scenario 1 Waste Disposal Volumes ............................................................... 39 Table 6-5 Scenario 2 Cost and Schedule Summary .......................................................... 42 Table 6-6 Scenario 2 DAEC Staff Levels ......................................................................... 43 Table 6-7 Scenario 2 DGC Staff Levels ............................................................................ 45 Table 6-8 Scenario 2 Waste Disposal Volumes ............................................................... 46 Table 6-9 Scenario 3 Cost and Schedule Summary ........................................................... 49 Table 6-10 Scenario 3 Waste Disposal Volumes ............................. 50 Table 6-11 Scenario 4 DAEC Staff Levels ......................................................................... 53 Table 6-12 Scenario 4 DGC Staff Levels ............................................................................ 55 Table 6-13 Scenario 4 Cost and Schedule Summary .......................................................... 56 Table 6-14 Scenario 4 Waste Disposal Volumes ............................................................... 57 APPENDICES Appendix A List of Systems and Structures Appendix B Spent Fuel Shipping Schedules Appendix C Detailed Project Schedules Appendix D Defled Cost Tables Appendix E Annual Cash Flow Tables Appendix F Detailed Annual Cash Flow Tables Page 3 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 1.0 EXECUTIVE

SUMMARY

This report presents the results of a site-specific decommissioning cost estimate for FPL Energy Duane Arnold, LLC's (FPLE) Duane Arnold Energy Center (DAEC) 1. The study has been performed to furnish an estimate, for financial planning purposes, of the costs for (1) decommissioning DAEC to the extent required to terminate the plant's operating license pursuant to 10 CFR 50.75(c), (2) post-shutdown management of spent fuel until acceptance by the U.S. Department of Energy (DOE) pursuant to 10 CFR 50.54(bb), and (3) clean demolition of structures and restoration of the site to Greenfield conditions (Ref. No. 1).

The study methodology follows the basic approach originally presented in the Atomic Industrial Forum/Nationfal Environmental Studies Project Report AIF/NESP-036, "Guidelines for Producing Commercial Nuclear Power Plant Decommissioning Cost Estimates," (Ref. No. 2).

The report was prepared in accordance with Nuclear Regulatory Commission (NRC) Regulatory Guide 1.202, "Standard Format and Content of Decommissioning Cost Estimates for Nuclear Power Reactors," (Ref. No. 3). The estimate is based on compliance with current regulatory requirements and proven decommissioning technologies.

NRC requirements set forth in Title 10 of the Code of Federal Regulations (CFR) differentiate between the post-shutdown costs associated with storage of spent fuel on-site and those associated with the decommissioning of the facility. 10 CFR 50.75(c) requires funding by the licensee of the facility for the decommissioning program, but specifically excludes the cost of removal and disposal of spent fuel and the removal of clean structures. 10 CFR 50.75(c) also excludes the cost of site restoration activities that do not involve the removal of residual radioactivity necessary to terminate the NRC license, which restore the site to either "Brownfield" or "Greenfield" conditions depending on the desired end-state. 10 CFR 50.54 (bb) requires funding by the licensee "for the management of all irradiated fuel at the reactor upon expiration of the reactor operating license until title to the irradiated fuel and possession of the fuel is transferred to the Secretary of Energy for its ultimate disposal in a repository."

Accordingly, the costs and schedules for all activities are segregated for regulatory purposes as follows: costs for "License Termination" (10 CFR 50.75(c)); costs for "Spent Fuel Management" (10 CFR 50.54(bb)); and costs for "Greenfield" (clean removal and site restoration) final site conditions. EnergySolutions has established a Work Breakdown Structure (WBS) and cost accounting system to differentiate between these three project accounts.

The study analyzes the following four decommissioning scenarios for DAEC, as defined by FPLE:

Scenario 1 Base Case

" DECON methodology.

" No license extension, with shutdown on February 21, 2014.

" Terminate spent fuel pool operation five years after permanent unit shutdown.

" Spent fuel will be stored at the existing Independent Spent Fuel Storage Installation (ISFSI).

FPLE owns 70% of and operates DAEC. The other owners of DAEC are Central Iowa Power Cooperative (20%)

and Corn Belt Power Cooperative (10%). All numbers presented in this report are on a 100% basis.

Page 4 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1

" Class B and C waste will be temporarily stored in an on-site interim waste storage facility to be built during decommissioning. Class B and C waste are assumed to be stored on-site until 2025, which is the assumed date a licensed facility would be available to receive these wastes.

" The DOE Yucca Mountain repository, or other approved method of spent fuel disposition, will be available starting in 2025.

Scenario 2 Base case, except using SAFSTOR methodology.

• Class B and C waste generated during operations and SAFSTOR preparations will be stored in the existing Low Level Radwaste Storage Building until 2025, which is the assumed date a licensed facility would be available to receive these wastes.

Scenario 3 Base case, except 20-year license extension, and no requirement for on-site interimstorage of Class B and C waste.

Scenario 4 Scenario 2, except with 20-year license extension, and no requirement for on-site interim storage of Class B and C waste.

Each scenario incorporates the spent fuel schedules developed by FPLE. All scenarios are based on performance of decommissioning by a Decommissioning General Contractor (DGC) under the management and supervision of DAEC staff. DAEC staff will be supplemented with a professional engineering consulting firm for planning and preparation, engineering design, and final status survey.

The cost'esftrnate results for all four scenarios are provided in 2008 dollars in Tables 1-1, 1-2, and 1-3. Table 1A contains License Termination costs, which correspond to 10 CFR 50.75 (c) requirements.

Table 1-1 License Termination Cost Summary by Scenario (2008 Dollars in Thousands)

License Termiination Scenario 50.75(c 1 $499,002 2 $578,297 3 $486,398 4 $578,144 Page 5 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 1-2 contains Spent Fuel Management costs, which correspond to 10 CFR 50.54 (bb) requirements.

Table 1-2 Spent Fuel Cost Summary by Scenario (2008 Dollars in Thousands) 1 $ZI/,3UU 2 $274,041 3 $234,468 4 $230,667 Table 1-3 contains Greenfield costs, which correspond to activities such as clean building demolition and site grading and re-seeding.

Table 1-3 Greenfield Cost Summary by Scenario (2008 Dollars in Thousands) 1 W40,/J1 2 $41,298 3 $40,731 4 $41,298 The estimate is based on site-specific plant systems and buildings inventories developed from material take-offs performed by EnergySolutions. These inventories and EnergySolutions' proprietary Unit Cost Factors (UCFs) were used to generate required manhours, activity schedule hours and costs, and waste volume, weight, and classification. Based on the activity schedule hours and a decommissioning activities analysis, a Critical Path Method (CPM) analysis was performed to determine the decommissioning schedules. These schedules reflect the effects of sequenced activity-dependent or distributed decommissioning elements such as planning and preparations, major component removal, building decontamination, and spent fuel shipping. The schedules are divided into project phases (periods) and presented, as noted previously, by cost account "License Termination," "Spent Fuel Management," or "Greenfield." The summary schedule for Scenario 1 is shown in Figure 1-1. The summary schedules for all the scenarios may be found in sections 6.1 through 6.4 of this report.

Page 6 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Figure 1-1 Scenario 1 Summary Schedule Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Storage Class B and C Waste Fnwh I I 1 12 13 14S6 7 9 1It 121 14 15 16 17 18 1) 2 225* 3*332 3 354l3S 338 39 414 4 4 44 Spent Fuel Management 1 0612212013 10/22/2054 .

'9SpentFeIShi-pping to DOE Begine S02/2/2027 02/21/2027 o2/2111027 Spent Fuel Shipping

................ -p isComplete

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,1-1 n .......... .........

.......................

• 92121905j Dry Pd I1-Fuel Pool Island Design 06/2212013~

Dry Pd 2 - Spent Fuel Cooling and Transfer to Dry Storage 2/21/2014 Dr d3DyStio~rage-During9 Decommissioning i'21,2os4*: ~10/3012025

........02(21/2019 Dry Pd 4........

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-Dry o' ge Only__

Storage )n y........................................................................... 10/301/2025 07212053 Dry Pd5 -ISFSI Deommissioning 07/26/2053 10122=S04 License Termination 12/29/2012 WNW; Unit 1 Shutdown 02/21/2014 02/21/2014 Decon Pd I - Decommissioning PlannIng Pulior to Shutdown 12J29/2012~

Decon Pd 2.- Site ModiiIcations and Preparations 2J21/2014, vow/1,01 Decon Pd 3. Meljor Component Removal 02/2412016' 05/26/2019

...... Decon Pdc34 - Balance *of ~ ~ iDec-ontamination

• - *I.............

Plant R o i...........................---................ 0&12812019 Decon Pd 5-Interim Waste Storage Facility Operation - Q081012022 101301202i 'myl~

Gm Pd I - Clean Building Demoiltion 05/18/222 0331=2021 Gm Pd 2 - Site Resloration o0*I04i Page 7 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1

2.0 INTRODUCTION

2.1 Study Objective This report presents the results of a site-specific decommissioning cost estimate for FPL Energy Duane Arnold, LLC's (FPLE) Duane Arnold Energy Center (DAEC). The study has been performed to furnish an estimate, for financial planning purposes, of the costs for (1) decommissioning DAEC to the extent required to terminate the plant's operating license pursuant to 10 CFR 50.75(c), (2) post-shutdown management of spent fuel until acceptance by the U.S. Department of Energy (DOE) pursuant to 10 CFR 50.54(bb), and (3) clean demolition of structures and restoration of the site to Greenfield conditions (Ref. No. 1).

The study methodology follows the basic approach originally presented in the Atomic Industrial Forum/National Environmental Studies Project Report AIF/NESP-036, "Guidelines for Producing Commercial Nuclear Power Plant Decommissioning Cost Estimates," (Ref. No. 2).

The report was prepared in accordance with Nuclear Regulatory Commission (NRC) Regulatory Guide 1.202, "Standard Format and Content of Decommissioning Cost Estimates for Nuclear Power Reactors," (Ref. No. 3). The estimate is based on compliance with current regulatory requirements and proven decommissioning technologies.

The study analyzes the following four scenarios, as defined by FPLE:

Scenario 1 Base Case

" DECON methodology.

" No license extension, with shutdown on February 21, 2014.

" Terminate spent fuel pool operation five years after permanent unit shutdown.

" Spent fuel will be stored at the existing Independent Spent Fuel Storage Installation (ISFSI).

" Class B and C waste will be temporarily stored in an on-site interim waste storage facility to be built during decommissioning. Class B and C waste are assumed to be stored on-site until 2025, which is the assumed date a licensed facility would be available to receive these wastes.

" The DOE Yucca Mountain repository, or other approved method of spent fuel disposition, will be available starting in 2025.

Scenario 2 Base case, except using SAFSTOR methodology.

• ClassB and C waste generated during operations and SAFSTOR preparations will be stored in the existing Low Level Radwaste Storage Building until 2025, which is the assumed date a licensed facility would be available to receive these wastes.

Scenario 3 Base case, except 20-year license extension, and no requirement for on-site interim storage of Class B and C waste.

Scenario 4 Scenario 2, except with 20-year license extension, and no requirement for on-site interim storage of Class B and C waste.

Page 8 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 2.2 Regulatory Framework Provisions of current laws and regulations affecting decommissioning, waste management and spent fuel management are as follows:

1. Current NRC policy requires either: (a) removal of all spent fuel from a facility licensed under 10 CFR 50, or (b) on-site storage of spent fuel at an ISFSI under the general license set forth in 10 CFR 72, or (c) on-site storage of spent fuel under a site-specific ISFSI Part 72 license, before the license can be terminated

2. 10 CFR 50.75(c) requires funding by the licensee of the facility for the decommissioning program, but specifically excludes the cost of removal and disposal of spent fuel and the removal of clean structures.

3. 10 CFR 50.54 (bb) requires the licensee, within two years following permanent cessation of operation of the reactor or five years before expiration of the operating license, whichever occurs first, to submit written notification to the NRC for its review and preliminary approval of the program by which the licensee intends to manage and provide funding "for the management of all irradiated fuel at the reactor upon expiration of the reactor operating license until title to the irradiated fuel and possession of the fuel is transferred to the Secretary of Energy for its ultimate disposal in a repository." However, the NRC does not currently consider post-shutdown spent fuel management costs to be decommissioning costs.

4. 10 CFR Part 961 (Ref. No. 4), Appendix E, requires spent fuel to be cooled in the spent fuel pool for at least five years before it can be accepted by DOE.

5. A bill to enact the "Atlantic Interstate Low-Level Radioactive Waste Compact Implementation Act" was signed by the Governor of South Carolina on June 6, 2000. The Atlantic Compact consists of South Carolina, Connecticut and New Jersey. Under the Act, effective June 2008, the Atlantic compact now prohibits out-of-region low level waste (LLW) generators, including FPLE, from disposing of LLW at the Barnwell disposal facility. Barnwell is one of only two facilities in the United States currently licensed to dispose of Class B and C LLW.

Decommissioning Alternatives The three basic methods for decommissioning are DECON, SAFSTOR, and ENTOMB, which are summarized as follows:

1. DECON: The equipment, structures, and portions of the facility and site that contain radioactive contaminants are promptly removed or decontaminated to a level that permits termination of the license after cessation of operations.

2. SAFSTOR: The facility is placed in a safe, stable condition and maintained in that state (safe storage). The facility is decontaminated and dismantled at the end of the storage period to levels that permit license termination. NRC regulations require decommissioning to be completed within 60 years of cessation of Page 9 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 operation. Durations less than the regulatory-allowed maximum may be referred to as Modified SAFSTOR.

3. ENTOMB: Radioactive structures, systems, and components are encased in a structurally long-lived substance, such as concrete. The entombed structure is appropriately maintained and monitored until radioactivity decays to a level that permits termination of the license. Since entombment will exceed the requirement for decommissioning to be completed within 60 years of cessation of operation, NRC handles entombment requests on a case-by-case basis.

The selection of a preferred decommissioning alternative is influenced by a number of factors pertinent at the time of final plant shutdown. These factors include the cost of each decommissioning alternative, minimization of occupational radiation exposure, availability of a low-level waste disposal facility, availability of a high-level waste (spent fuel) repository, regulatory requirements, and public concerns.

Post-Shutdown Spent Fuel Management Alternatives The earliest date for start-up of the DOE's Yucca Mountain repository is currently 20202.

However, there is considerable uncertainty associated with this scheduled opening. Per guidance from FPLE, this study assumes that the DOE Yucca Mountain repository, or other approved method of spent fuel disposition, will be available starting in 2025. Therefore, long-term post-shutdown spent fuel storage must be addressed as an integral element of decommissioning planning. The basic options for long-term post-shutdown spent fuel management are (1) wet storage consisting of continued maintenance and operation of the spent fuel pool, (2) dry storage consisting of transfer of spent fuel from the fuel pool to on-site dry storage modules following the minimum cooling period, and (3) off-site storage at a licensed private or commercial storage facility. The third option is not commercially viable as of the date of this study.

The selection of a spent fuel management alternative has a significant impact on decommissioning. Maintaining the spent fuel pool for an extended duration following cessation of operations prevents termination of the Part 50 license and typically has a higher annual maintenance and operating cost than the dry storage alternative. Transfer of spent fuel to an ISFSI requires (1) capital expenditures for purchase and construction of the ISFSI, if needed, and (2) dismantlement and disposal of the ISFSI following completion of spent fuel transfer to DOE.

2 Summary, Edward F. Sproat, III, Director Office of Civilian Radioactive Waste Management, U.S. Department of Energy Before the Subcommittee on Energy and Air Quality, Committee on Energy and Commerce, U.S. House of Representatives, July 15, 2008 Page 10 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 3.0 STUDY METHODOLOGY 3.1 General Description EnergySolutions maintains a proprietary decommissioning cost model based upon the fundamental technical approach established in AIF/NESP-036, "Guidelines for Producing Commercial Nuclear Power Plant Decommissioning Cost Estimates," dated May 1986 (Ref. No.

2). The cost model has been continuously updated in accordance with regulatory requirements and industry experience. The cost model includes elements for estimating distributed and undistributed costs. Distributed costs are activity specific and include planning and preparation costs as well as the decontamination, packaging, disposal, and removal of major components and systems. For example, the segmentation, packaging, and disposal of the reactor internals is a distributed cost. Undistributed costs, sometimes referred to as collateral costs, are typically time dependent costs such as utility and decommissioning general contractor staff, property taxes, insurance, regulatory fees and permits, energy costs, and security staff.

The methodology for preparing cost estimates for a selected decommissioning alternative requires development of a site-specific detailed work activity sequence based upon the plant inventory. The activity sequence is used to define the labor, material, equipment, energy resources, and duration required for each activity. In the case of major components, individual work sequence activity analyses are performed based on the physical and radiological characteristics of the component and the packaging, transportation, and disposal options available.

In the case of structures and small components and equipment such as piping, pumps, and tanks, the work durations and costs are calculated based on Unit Cost Factors (UCFs). UCFs are economic parameters developed to express costs per unit of work output, piece of equipment, or time. They are developed using decommissioning experience, information on the latest technology applicable to ddc6mmissioning, and engineering judgment. The total cost of a specific decommissioning activity can be determined by multiplying the total number of units associated with that activity by the UCF, expressed as $/unit, for that activity. For example, the estimated demolition cost of a non-contaminated concrete structure can be obtained by multiplying the volume of concrete in the structure by the UCF for non-contaminated reinforced concrete demolition, expressed in $/unit volume. Each UCF has associated with it a man-hours/unit and schedule-hours/unit. From these values, total man-hours and total schedule-hours can be determined for a particular activity.

3.2 Schedule Analysis Once the work activity durations are calculated for all distributed activities, a critical path schedule analysis is performed using MS Project. The schedule accounts for constraints such as spent fuel cooling periods and regulatory reviews. The schedule is typically delineated into phases or time periods (hereinafter referred to as period or periods) that differentiate manpower requirements and undistributed costs.

In order to differentiate between License Termination, Spent Fuel and Greenfield elements of the entire decommissioning scope of work, EnergySolutions has established a Work Breakdown Structure (WBS) and cost accounting system to treat each element as a subproject. Accordingly, the overall project schedule is divided into interrelated periods with major milestones defining Page 11 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 the beginning and ending of each period. The major milestones also serve as the basis for integrating the periods of the three subprojects. The License Termination and Greenfield project periods are scheduled sequentially while the Spent Fuel periods occur in parallel.

3.3 Decommissioning Staff EnergySolutions' philosophy towards decommissioning is to assume the project will be performed in an efficiently planned and executed manner using project personnel experienced in decommissioning. EnergySolutions assumes that the decommissioning will be performed by a highly experienced and qualified Decommissioning General Contractor (DGC), with oversight and management of the decommissioning operations performed by DAEC staff. It was also assumed that DAEC staff would be supplemented by professional consulting engineering, particularly in the planning and preparation phase. EnergySolutions analyzed the DAEC operational staff and developed a site-specific staffing plan. The DAEC existing salary structure was then used as the basis for calculating DAEC staff labor costs. EnergySolutions used industry data to develop DGC salary costs.

Staffing levels, for both staffing plans and for each project period, are based on the AIF guidelines and industry experience. The sizes of the staffs are varied in each period in accordance with the requirements of the work activities. DAEC staffing has been organized into the following departments or functional groups:

" Administration

" Engineering

" Health Physics

" Management

" Plant Maintenance

" Plant Operations

" Quality Assurance

" Security Administration

" Security Guard Force

" Waste Operations

" Fuel Pool Maintenance and Operation Staff

" Additional Staff for Spent Fuel Shipping

" DGC Staff Page 12 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 3.4 Waste Disposal Waste management costs comprise a significant portion of the decommissioning cost estimate.

Additionally, limited future access to disposal sites licensed for receipt of Class B and C wastes introduces a significant level of uncertainty with respect to the appropriateness of using existing rate structures to estimate disposal costs of these wastes. EnergySolutions' approach to estimating waste disposal costs is discussed in the following paragraphs.

Waste Classification Regulations governing disposal of radioactive waste are stringent in order to ensure control of the waste and preclude adverse impact on public health and safety. At present, low-level radioactive waste (LLRW) disposal is controlled by NRC Regulation 10 CFR 61 (Ref. No. 4),

which went into effect in December, 1983. This regulation stipulates the criteria for the establishment and operation of shallow-land LLRW burial facilities. Embodied within this new regulation are criteria and classifications for packaging LLRW such that it is acceptable for burial at licensed LLRW disposal sites.

For each waste classification, 10 CFR 61 stipulates specific criteria for physical and chemical properties that the LLRW must meet in order to be accepted at a licensed disposal site. The LLRW disposal criteria of 10 CFR 61 require that LLRW generators determine the proportional amount of a number of specific radioactive isotopes present in each container of disposable LLRW. This requirement for isotopic analysis of each container of disposable LLRW is met by employing a combination of analytical techniques such as computerized analyses based upon scaling factors, sample laboratory analyses, and direct assay methods. Having performed an isotopic analysis of each container of disposable LLRW, the waste must then be classified according to one of the classifications (Class A, B, C or Greater Than Class C (GTCC)) as defined in 10 CFR 61.

EnergySolutions' classification of LLRW resulting from decommissioning activities is based on AIF/NESP-036 (Ref. No. 2), NUREG/CR-0130 (Ref. No. 5), NUREG/CR-0672 (Ref. No. 6),

and recent industry experience. The estimated curie content of the reactor vessel and internals at shutdown is derived from NUREG/CR-0130 for Pressurized Water Reactors (PWRs) and NUREG/CR-0672 for Boiling Water Reactors (BWRs) and adjusted for the different mass of components as well as the MWt rating and period of decay.

Packaging Selection of the type and quantity of containers required for Class B and C wastes is based on the most restrictive of either curie content, dose-rate, container weight limit, or container volume limit. GTCC wastes from segmentation of the reactor vessel internals is packaged in fuel bundle canisters. The selection of container type for Class A waste is based on the transportation mode (rail, truck, barge, etc.) and waste form. The quantity of Class A waste containers is determined by the most restrictive of either container weight limit or container volume limit. Large components, such as steam generators, pressurizers, and reactor recirculation pumps, are shipped as their own container with shielding as required.

Container costs are obtained from manufacturers. Shielded transport cask and liner costs are obtained from the cask owners and operators.

Page 13 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Transportation Transportation routes to processing and disposal facilities are determined based on available transportation modes (truck, rail, barge or combinations). Routes and distances are determined using the Transportation Routing Analysis Geographic Information System (TRAGIS) software developed by the Oak Ridge National Laboratory National Transportation Research Center (Ref.

No. 7).

Transportation costs for the selected routes and modes are obtained from vendor quotes or published tariffs whenever possible.

Class A Disposal Options and Rates In accordance with the existing Life-of-Plant Disposal Agreement (Ref. No. 8), all Class A waste that meets the Clive facility waste acceptance criteria is to be disposed of at Clive. All reported waste disposal costs include packaging, transportation, and any applicable surcharges.

Class B and C Disposal Options and Rates Currently, within the United States, there are only two commercial disposal facilities licensed to accept Class B and C LLRW: the Barnwell facility, operated by EnergySolutions in Barnwell, South Carolina, and the U.S. Ecology facility in Richland, Washington. However, Barnwell only accepts waste from states within the Atlantic Compact, and U.S. Ecology only accepts waste from states within the Northwest and Rocky Mountain Compacts.

The Low-Level Waste Policy Act (LLWPA), passed by Congress in 1980, placed the responsibility of LLRW disposal in the hands of individual states. The LLWPA provided a six-year time frame within which each state was required to develop its own means for radioactive disposal. The LLWPA also provided for a group of states to form a compact, which could then establish the means for LLRW disposal on a regional basis.

The intent of the LLWPA was to have new LLRW disposal sites in operation before January 1, 1986, therefore permitting closures of the three existing burial sites located in South Carolina, Washington, and Nevada. Since no new disposal sites were in operation by 1986, it is evident that the LLWPA failed to motivate the individual states to comply with its purpose.

On January 15, 1986, Congress amended the LLWPA with passage of Public Law 99-240. In June of 1992, the U.S. Supreme Court ruled that the provisions of the amendment requiring any state to take title to the waste of its generators, if that state had not met its program milestones dates, were unconstitutional. The Supreme Court's invalidation of the "take title" provision has contributed to a lack of significant progress by many States in coming to grips with the problem.

The question then becomes: what disposal rate is to be used in the decommissioning cost estimate for Class B and C LLRW and where is it to go? Since the cost estimate is based on current or present day dollars, the disposal cost for Class B and C LLRW should be equivalent to the cost that would be incurred if a new disposal facility were to be licensed and begin operations today. EnergySolutions has reviewed several studies developed in an attempt to quantify the disposal costs associated with a new disposal facility constructed in today's environment. Based Page 14 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 on this review, it is EnergySolutions' belief that Class B and C LLRW disposal rates based on the published base rate and surcharge structure for the Barnwell facility is the most reasonable approach. This approach is also based on the fact that NRC requires utilities to update their decommissioning cost estimates every five years so that changes in disposal options and costs can be taken into account.

Greater Than Class C (GTCC)

Wastes identified as 10 CFR 61 Class A, B, and C may be disposed at a near-surface disposal facility. Certain components are highly activated and may exceed the radionuclide concentration limitations for 10 CFR 61 Class C waste. In accordance with 10 CFR 61, these components cannot be disposed of in a near-surface LLRW disposal facility and must be transferred to a geologic repository or a similar site approved by the NRC.

Highly activated sections of the reactor vessel internals will result in GTCC waste. Presently, a facility does not exist for the disposal of wastes exceeding 10 CFR 61 Class C limitations.

EnergySolutions assumes that the DOE will accept this waste at the Yucca Mountain repository facility along with spent fuel. However, unlike spent fuel, the disposal cost is not addressed by DOE's 1-mill/kWhr surcharge. Therefore, EnergySolutions estimates a GTCC waste disposal cost based upon the maximum curie surcharges currently in effect at Barnwell. EnergySolutions assumes that the GTCC waste will be packaged in fuel bundle canisters, either stored in the fuel pool or dry storage containers, and be shipped to Yucca Mountain by DOE along with the spent fuel. Additionally, EnergySolutionsassumes shipping costs for GTCC waste to be equivalent to the commercial cost of shipping a Type B licensed, shielded cask such as the CNS 8-120B cask which is owned and operated by EnergySolutions.

Non-Radioactive Non-Hazardous Waste Disposal EnergySolutions assumes that recyclable, non-radioactive scrap metal resulting from the decommissioning program will be removed from the site by a scrap metal dealer at no cost to the project. Concrete debris is assumed to be processed by size reduction, with removal of structural reinforcing steel, and used on site as engineered fill for voids. All other demolition debris is removed from the site and disposed of at a local construction debris landfill.

Hazardous and Industrial Waste Disposal Uncontaminated lead shielding remaining after shutdown was assumed to be removed from its installed locations and shipped offsite by entities having a need for the material. The entities receive the lead at no charge in return for providing the removal and shipping services. In accordance with information furnished by FPLE seven percent of insulated systems in radiologically controlled areas are assumed to contain asbestos, therefore; the decommissioning cost estimate includes a line item for asbestos abatement. The decommissioning estimate also includes an estimate for hazardous and industrial waste disposal based on information provided in the "DAEC 2007 Hazardous Waste Report." The cost of hazardous and industrial waste disposal includes FPLE's estimated cost for closure of Resource Conservation and Recovery Act (RCRA) storage area.

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Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 3.5 Final Status Survey The cost of performing a final status survey (FSS) is based on NUREG-1575, "Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM)" (Ref. No. 9). Estimates of MARSSIM Class I, II and III survey designations are based on radiological characterization data furnished by DAEC and assumptions regarding contamination resulting from small and large component removal activities. The FSS activity cost calculation includes the in-place remote survey of underground metal and concrete pipe, soil, and groundwater sampling and analysis.

Estimated costs for NRC and Oak Ridge Institute for Science and Education (ORISE) verification are also included, and the NRC review period is incorporated into the project schedule.

3.6 Contingency Contingencies are applied to cost estimates primarily to allow for unknown or unplanned occurrences during the actual program, e.g. increased radioactive waste materials volumes over that expected; equipment breakdowns; weather delays; labor strikes, etc. This is consistent with the definition provided in the DOE Cost Estimating Guide, DOE G 430.1-1, 3-28-97 (DOE G)

(Ref. No. 10): Contingency "Covers costs that may result from incomplete design, unforeseen and unpredictable conditions, or uncertainties within the defined project scope. The amount of contingency will depend on the status of design, procurement, and construction; and the complexity and uncertainties of the component parts of the project. Contingency is not to be used to avoid making an accurate assessment of expected costs." EnergySolutions determines site-specific contingency factors to be applied to each estimate based on industry practices.

The DOE has established a recommended range of contingencies as a function of completeness of program design, DOE G. The ranges are:

Contingency Range Type of Estimate as a % of Total Estimate Planning Phase Estimate 20-30 Budget Estimate 15-25 Title I (Preliminary Design Estimate) 10-20 Title II (Definitive Design Estimate) 5-15 EnergySolutions' approach to assigning appropriate contingency rates is based on adaptations of published values for the specific decommissioning activities. One source for such published information is AIF/NESP-0036 "Guidelines for Producing Nuclear Plant Decommissioning Cost Estimates" (AIF) (Ref. No. 2). This document identifies contingencies for activities specific to a nuclear power plant decommissioning, such as reactor internals removal. The contingencies presented in this document are based on the assumption that the estimated costs are optimistic; therefore, the published contingencies are greater than they would be if the estimated costs were most probable. With the exception of the system decontamination, reactor vessel and reactor internals removal, and disposal, the contingencies presented in AIF are consistent with the values presented in DOE G 430.1-1 for a Budget/Title I estimate. The system decontamination, reactor vessel and reactor internals removal, and disposal contingencies are significantly higher than the ranges identified by the DOE, even for a planning phase document. This is due to the unique nature of these activities and the relatively small amount of historical data available at the time the AIF document was written.

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Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 EnergySolutions has developed contingencies specific to decommissioning estimates utilizing the information presented in AIF and consistent with DOE G. The decommissioning costs generated by EnergySolutions are considered most probable and, as such, the contingencies presented in AIF were reduced for each category of costs. There have also been a number of large-scale decommissioning projects since AIF was published, providing some historical information that can be used in preparing current estimates. This allows for additional reduction in contingency costs. The following table provides a summary of contingency values used in EnergySolutions' estimates where the plant structures, systems, and major component material inventories are well defined, as with this study.

Package Material & Ship &

Category Labor Equipment Bury Other Engineering, Utility & DGC 13%

Contaminated components/Concrete 23% 23% 23%

Clean components 13% 23% 13%

Reactor Vessel and Reactor Internals 50% 23% 25%

Other 15%

A reactor decommissioning program will be conducted under an NRC-approved Quality Assurance Program which meets the requirements of 10 CFR 50, Appendix B, of the Code of Federal Regulations. However, the development of the quality assurance program, the performance of work under that program, and the effort required to ensure compliance with the program, is already included in the detailed cost estimate. Therefore, EnergySolutions does not include quality assurance as an element of the contingency allowance. The same is true for contamination. Where radioactive contamination or activated materials are dealt with, the EnergySolutions unit cost factors and associated calculations fully reflect the cost impact of that material, and a separate contingency is not required specifically due to working with contamination.

3.7 Cost Reporting Total project costs are aggregated from the distributed activity and undistributed costs into the following categories - Labor, Materials and Equipment, Waste Disposal, and Other costs. Other costs include property taxes, insurance, license fees, permits, and energy. Waste disposal costs are the summation of packaging, transportation, base disposal rate, and any applicable surcharges. Health physics (HP) supplies and small tool costs are calculated as a component of each distributed activity cost and included in the category of Material and Equipment, with the exception that HP supplies for DAEC HIP staff are calculated and reported as an undistributed line item. A line item specific contingency is then calculated for each activity cost element.

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Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 4.0 SITE SPECIFIC TECHNICAL APPROACH 4.1 Facility Description DAEC is a nuclear powered electrical generating facility consisting of one BWR located on a site near Palo in Linn County, Iowa. The plant site comprises approximately 500 acres adjacent to the Cedar River approximately 2.5 miles northeast of the Village of Palo, Iowa.

The nuclear system includes a single-cycle, forced-circulation, General Electric (GE) BWR producing steam for direct use in the steam turbine. The nuclear steam supply system (NSSS) and the turbine-generator were furnished by GE. The balance of plant was designed and constructed by Bechtel Power Corporation (Bechtel) as architect engineer and constructor.

The unit was originally designed, analyzed, and licensed for a steady-state core power of 1658 MWt, although the plant Technical Specifications restricted operation to a rated power of 1593 MWt. In 1985, the Technical Specifications were amended to allow the DAEC to operate at a steady-state power level of 1658 MWt (License Amendment #115). Then, in 2001, the rated power level was increased again to 1912 MWt (License Amendment #243). The current shutdown date is February 21, 2014.

Spent fuel assemblies are stored in the spent fuel storage racks in the fuel pool or may, after appropriate decay, be transferred to an ISFSI for interim onsite storage. The DAEC has been authorized by NRC to increase the storage capacity of the DAEC spent fuel pool to 2829 assemblies. In addition, a Cask Pit is also licensed to contain a rack with storage capacity of 323 assemblies. The Cask Pit rack is used as a means to retain full-core offload capability after such capacity is exhausted in the spent fuel pool. The DAEC may or may not exercise this option in the future. The re-rack project of 1994 increased the spent fuel pool capacity to 2411 assemblies.

Subsequent re-rack projects will be undertaken only if the DAEC chooses to do so after having considered all other practicable options.

There is an ISFSI on site that houses 10 CFR 72 licensed spent fuel storage systems that can provide interim on-site storage of spent fuel, high-level radioactive waste, and reactor-related GTCC waste.

Appendix A provides a list of the DAEC systems and structures included in the material inventory for this study.

4.2 Decommissioning Periods for Scenario 1 The project periods defined for Scenario 1 (Base Case, DECON) consist of five License Termination periods, four Spent Fuel Management periods, and two Greenfield periods. The License Termination periods and Spent Fuel Management periods occur simultaneously. The Greenfield periods follow the License Termination periods sequentially. The project periods defined for this site-specific study and the major activities performed during each period are as follows:

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Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 License Termination Decon Pd 1 - Decommissioning Planning Prior to Shutdown

" Preparation of Decommissioning Licensing Documents

" Decommissioning Planning and Design

" Prepare Integrated Work Sequence and Schedule

" Preparation of License Termination Plan

" Select Decommissioning General Contractor

" Design and License Interim Storage Facility for Greater than Class A Waste Decon Pd 2 - Site Modifications and Preparations

" Perform Baseline Radiation Survey

" Construct Interim Storage Facility for Greater than Class A Waste

" Perform Primary System Decontamination

" Flush and Drain Nonessential Systems

" Modify Containment Access and Implement Cold and Dark

" Design, Specify, and Procure Special Items and Materials

" Asbestos Abatement Decon Pd 3 - Major Component Removal

" Reactor Pressure Vessel and Internals Removal and Disposal

" NSSS Removal and Disposal

" Turbine Generator and Condenser Removal and Disposal

" Nonessential Systems Removal and Disposal Decon Pd 4 - Balance of Plant Decontamination

" Removal and Disposal of Spent Fuel Racks

" Drain Spent Fuel Pool

" Spent Fuel Pool Island Equipment Removal and Disposal

" Removal and Disposal of Remaining Plant Systems

" Decontaminate Plant Structures

" Perform Final Status Survey

" Prepare Dismantling Program Final Report

" Partial Part 50 License Termination Decon Pd 5 - Interim Waste Storage Facility Operation

" Transport and Dispose of Waste in Facility

" Perform FSS of Facility

" Clean Demolition of Facility Spent Fuel Management Dry Pd 1 - Fuel Pool Island Design

" Design Spent Fuel Support System Modifications M Design Control Room Relocation

" Design Spent Fuel Storage Security Modifications Page 19 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 DEy Pd 2 - Spent Fuel Cooling and Transfer to Dry Storage

" Install Spent Fuel Pool System Modifications

" Implement Control Room Modifications

" Implement Spent Fuel Pool Security Modifications

" Purchase Dry Storage Modules Dry Pd 3 - Dry Storage During Decommissioning

" Maintenance and Inspection of ISFSI

" Spent fuel shipments to DOE Dry Pd 4 - Dry Storage Only

" Maintenance and Inspection of ISFSI

" Continued spent fuel shipments to DOE Dry Pd 5 - ISFSI Decommissioning

" Horizontal Storage Module Verification Survey

" Preparation of Final Report on Decommissioning and NRC review

" Clean Demolition of ISFSI

" Part 50 License Termination Greenfield Gm Pd 1 - Clean Building Demolition

" Install temporary structures

" Demolition of all permanent structures Gm Pd 2 - Site Restoration

" Remove Temporary Structures

" Finish Grading and Seeding 4.3 Decommissioning Periods for Scenario 2 The project periods defined for Scenario 2 (SAFSTOR) consist of eleven License Termination periods, four Spent Fuel Management periods, and two Greenfield periods. The License Termination periods and Spent Fuel Management periods occur simultaneously. The Greenfield periods follow the License Termination periods sequentially. The project periods defined for this site-specific study and the major activities performed during each period are as follows:

License Termination SAFSTOR Pd 1 - SAFSTOR Planning Prior to Shutdown

" Preparation of SAFSTOR Licensing Documents

" SAFSTOR Planning and Design

" Prepare Integrated SAFSTOR Work Sequence and Schedule

" Preparation of SAFSTOR Plan

" Select SAFSTOR General Contractor Page 20 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 SAFSTOR Pd 2 - SAFSTOR Preparations Following Shutdown

" Procure Non-Engineered Standard Equipment

" Perform pre-SAFSTOR Baseline Radiation Survey

" Perform Primary System Decontamination

" Flush and Drain Nonessential Systems

" General Area Cleanup

" Asbestos Abatement

" Prepare SAFSTOR Report SAFSTOR Pd 3 - SAFSTOR Preparation Delay During Spent Fuel Pool Operations M Surveillance and Maintenance SAFSTOR Pd 4 - Completion of SAFSTOR Preparations M Drain Spent Fuel Pool M Flush and Drain Remaining Systems M Spent Fuel Pool Island Equipment Removal and Disposal 0 Secure Site SAFSTOR Pd 5 - Dormancy with Interim Waste Storage and Dry Spent Fuel Storage

" Surveillance and Maintenance

" Transport and Dispose of Greater Than Class A Waste in Interim Storage SAFSTOR Pd 6 - Dormancy with Dry Storage N Surveillance and Maintenance SAFSTOR Pd 7 - Dormancy Only 0 Surveillance and Maintenance SAFSTOR Pd 8 - Decommissioning Planning During Dormancy

" Preparation of Decommissioning Licensing Documents

" Decommissioning Planning and Design

" Select Decommissioning General Contractor

" Plan Site Revitalization

" Prepare Integrated Work Sequence and Schedule

" Preparation of License Termination Plan SAFSTOR Pd 9 - Dismantlement Site Modifications and Preparations

" Revitalize Infrastructure and Re-power Site

" Perform Post-SAFSTOR Baseline Radiation Survey 0 Modify Containment Access

" Design, Specify, and Procure Special Items and Materials SAFSTOR Pd 10 - Major Component Removal

" Reactor Pressure Vessel and Internals Removal and Disposal

" NSSS Removal and Disposal

" Turbine Generator and Condenser Removal and Disposal

" Systems Removal and Disposal

" Removal and Disposal of Spent Fuel Racks Page 21 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 SAFSTOR Pd 11 - Site Decontamination

" Decontaminate Plant Structures

" Perform Final Status Survey

" Preparation of Final Report on Dismantling

" Partial Part 50 License Termination Spent Fuel Management Dry Pd 1 - Fuel Pool Island Design

" Design Spent Fuel- Support System Modifications

" Design Control Room Relocation

" Design Spent Fuel Storage Security Modifications Dry Pd 2 - Spent Fuel Cooling and Transfer to Dry Storage

" Install Spent Fuel Pool System Modifications

" Implement Control Room Modifications

" Implement Spent Fuel Pool Security Modifications

" Purchase Dry Storage Modules Dry Pd 3 - Dry Storage During Dormancy 0 Maintenance and Inspection of ISFSI 0 Spent fuel shipments to DOE Dry Pd 4 - ISFSI Decommissioning

" Horizontal Storage Module Verification Survey

" Preparation of Final Report on Decommissioning and NRC review

" Clean Demolition of ISFSI

" Part 50 License Termination Greenfield Gm Pd 1 - Clean Building Demolition 0 Demolition of all permanent structures Gm Pd 2 - Site Restoration

" Remove Temporary Structures

" Finish Grading and Seeding 4.4 Decommissioning Periods for Scenario 3 The project periods defined for Scenario 3 (DECON with license extension) consist of four License Termination periods, four Spent Fuel Management periods, and two Greenfield periods.

The License Termination periods and Spent Fuel Management periods occur simultaneously.

The Greenfield periods follow the License Termination periods sequentially. The project periods defined for this site-specific study and the major activities performed during each period are as follows:

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Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 License Termination Decon Pd 1 - Decommissioning Planning Prior to Shutdown

" Preparation of Decommissioning Licensing Documents

" Decommissioning Planning and Design

" Prepare Integrated Work Sequence and Schedule

" Preparation of License Termination Plan

" Select Decommissioning General Contractor Decon Pd 2 - Site Modifications and Preparations

" Perform Baseline Radiation Survey

" Perform Primary System Decontamination

" Flush and Drain Nonessential Systems

" Modify Containment Access and Implement Cold and Dark

" Design, Specify, and Procure Special Items and Materials

" Asbestos Abatement Decon Pd 3 - Major Component Removal

" Reactor Pressure Vessel and Internals Removal and Disposal

" NSSS Removal and Disposal

" Turbine Generator and Condenser Removal and Disposal

" Nonessential Systems Removal and Disposal Decon Pd 4 - Balance of Plant Decontamination

" Removal and Disposal of Spent Fuel Racks

" Drain Spent Fuel Pool

" Spent Fuel Pool Island Equipment Removal and Disposal

" Removal and Disposal of Remaining Plant Systems

" Decontaminate Plant Structures Remediate Soil Contamination

• Perform Final Status Survey

• Prepare Dismantling Program Final Report

• Partial Part 50 License Termination Spent Fuel Management Dry Pd 1 - Fuel Pool Island Design E Design Spent Fuel Support System Modifications E Design Control Room Relocation E Design Spent Fuel Storage Security Modifications Dry Pd 2 - Spent Fuel Cooling and Transfer to Dry Storage

" Install Spent Fuel Pool System Modifications

" Implement Control Room Modifications

" Implement Spent Fuel Pool Security Modifications

" Purchase Dry Storage Modules Page 23 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Dry Pd 3 - Dry Storage During Decommissioning

" Maintenance and Inspection of ISFSI

" Spent fuel shipments to DOE Dry Pd 4 - Dry Storage Only 0 Maintenance and Inspection of ISFSI M Continued spent fuel shipments to DOE Dry Pd 5 - ISFSI Decommissioning

" Horizontal Storage Module Verification Survey

" Preparation of Final Report on Decommissioning and NRC review

" Clean Demolition of ISFSI

" Part 50 License Termination Greenfield Gm Pd 1 - Clean Building Demolition

" Install temporary structures

• Demolition of all permanent structures Gm Pd 2 - Site Restoration

" Remove Temporary Structures

" Finish Grading and Seeding 4.5 Decommissioning Periods for Scenario 4 The project periods defined for Scenario 4 (SAFSTOR with license extension) consist of ten License Termination periods, four Spent Fuel Management periods, and two Greenfield periods.

The License Termination periods and Spent Fuel Management periods occur simultaneously.

The Greenfield periods follow the License Termination periods sequentially. The project periods defined for this site-specific study and the major activities performed during each period are as follows:

License Termination SAFSTOR Pd I - SAFSTOR Planning Prior to Shutdown

" Preparation of SAFSTOR Licensing Documents

" SAFSTOR Planning and Design

" Prepare Integrated SAFSTOR Work Sequence and Schedule

" Preparation of SAFSTOR Plan

" Select SAFSTOR General Contractor SAFSTOR Pd 2 - Site Preparations Following Shutdown

" Procure Non-engineered Standard Equipment

" Perform pre-SAFSTOR Baseline Radiation Survey

" Perform Primary System Decontamination

" Flush and Drain Nonessential Systems

" General Area Cleanup

" Asbestos Abatement Page 24 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 0 Prepare SAFSTOR Report SAFSTOR Pd 3 - SAFSTOR Preparation Delay During Spent Fuel Pool Operations 0 Surveillance and Maintenance SAFSTOR Pd 4 - Completion of SAFSTOR Preparations

" Drain Spent Fuel Pool

" Spent Fuel Pool Island Equipment Removal and Disposal

" Secure Site SAFSTOR Pd 5 - Dormancy with Dry Storage

• Surveillance and Maintenance SAFSTOR Pd 6 - Dormancy Only

• Surveillance and Maintenance SAFSTOR Pd 7 - Decommissioning Planning During Dormancy

" Preparation of Decommissioning Licensing Documents

" Decommissioning Planning and Design

" Select Decommissioning General Contractor

" Plan Site Revitalization

" Prepare Integrated Work Sequence and Schedule

" Preparation of License Termination Plan SAFSTOR Pd 8 - Dismantlement Site Modifications and Preparations

" Revitalize Infrastructure and Re-power Site

" Perform Post-SAFSTOR Baseline Radiation Survey

" Modify Containment Access

" Design, Specify, and Procure Special Items and Materials SAFSTOR Pd 9 - Major Component Removal

" Reactor Pressure Vessel and Internals Removal and Disposal

• NSSS Removal and Disposal

" Turbine Generator and Condenser Removal and Disposal

" Systems Removal and Disposal

" Removal and Disposal of Spent Fuel Racks SAFSTOR Pd 10 - Site Decontamination

" Decontaminate Plant Structures

" Perform Final Status Survey

" Preparation of Final Report on Dismantling

" Partial Part 50 License Termination Spent Fuel Management Dry Pd I - Fuel Pool Island Design

" Design Spent Fuel Support System Modifications

" Design Control Room Relocation

" Design Spent Fuel Storage Security Modifications Page 25 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Dry Pd 2 - Spent Fuel Cooling and Transfer to Dry Storage

" Install Spent Fuel Pool System Modifications

" Implement Control Room Modifications

" Implement Spent Fuel Pool Security Modifications

" Purchase Dry Storage Modules Dry Pd 3 - Dry Storage During Dormancy

" Maintenance and Inspection of ISFSI

" Continued spent fuel shipments to DOE Dry Pd 4 - ISFSI Decommissioning

" Horizontal Storage Module Verification Survey

" Preparation of Final Report on Decommissioning and NRC review

" Clean Demolition of ISFSI

" Part 50 License Termination Greenfield Gm Pd 1 - Clean Building Demolition

• Demolition of all permanent structures Gm Pd 2 - Site Restoration

" Remove Temporary Structures

" Finish Grading and Seeding 4.6 Decommissioning Staff For this study, EnergySolutions developed staffing based on the assumption that decommissioning will be performed by an experienced and qualified DGC, with oversight and management of the decommissioning operations performed by DAEC staff. It is also assumed that DAEC staff is supplemented by professional consulting engineering, particularly in the planning and preparation phase. The sizes of the staffs are varied in each period in accordance with the requirements of the work activities. Details on the staff levels by functional group during each period are provided in Section 6.0 for each scenario.

4.7 Spent Fuel Management Staff The largest spent fuel staff occurs while the fuel pool is operational during the minimum cooling period and the fuel assemblies are being transferred to either the DOE repository or dry storage.

Once all spent fuel has been removed from the spent fuel pool, the staff is reduced. During spent fuel pool operations and the dry storage period, the full-time spent fuel management staff is supplemented with part-time staff to support fuel movements. Details on the staff levels by functional group during each period are provided in Section 6.0 for each scenario.

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Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 4.8 Spent Fuel Shipments The spent fuel shipment schedules for each scenario are based on information from FPLE regarding existing fuel inventory, planned transfers to dry storage, planned off-loads during outages, the DOE shipment schedule, and the full core off-load. The spent fuel shipping schedules are also based, in part, on the DOE's "Acceptance Priority Ranking & Annual Capacity Report," dated July 2004 (Ref. No. 11). Spent fuel shipping schedules for each scenario are provided in Appendix B.

Page 27 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 5.0 BASES OF ESTIMATE AND KEY ASSUMPTIONS The bases of and key assumptions for this site-specific decommissioning estimate are presented below:

1. All cost data used in this study is current as of 2008 or has been escalated to 2008 dollars. Totals and subtotals have been rounded to significant figures.

2. The decommissioning will be performed under the current regulations. These regulations require a Post-Shutdown Decommissioning Activities Report (PSDAR) to be submitted prior to, or within, two years after permanent shutdown. In addition, a certificate of permanent cessation of operations must be submitted to the NRC within 30 days of permanent cessation of operations. Certification of the final core off-load must also be submitted to the NRC upon completion of this activity. Ninety days after the NRC receives the PSDAR and after submittal of both certifications, major decommissioning activities that meet the criteria of 10 CFR Part 50.59 may be performed, provided the NRC does not notify DAEC of any deficiencies.

3. The decommissioning will be performed using currently available technologies.

4. EnergySolutions developed prompt dismantlement (DECON) and delayed dismantlement (SAFSTOR) project schedules based on a shutdown date of February 21, 2014 for Scenarios I and 2. For Scenarios 3 and 4, with a 20 year license extension, a shutdown date of February 21, 2034 was used.

5. A DOE repository is assumed to exist by an opening date of January 1, 2025.

6. This estimate's material inventory is based on EnergySolutions takeoffs from the site drawings and information furnished by FPLE.

7. All transformers on site following shutdown are assumed to be PCB-free.

8. No PCBswill be on site at shutdown.

9. Clean scrap metal is assumed to be recycled at no cost to the project. Concrete debris is assumed to be processed by size reduction, with removal of structural reinforcing steel, and used on site as engineered fill for voids. All other demolition debris is removed from the site and disposed of at a local off-site construction landfill.

10. All scenarios are based on final site restoration to Greenfield conditions, in which all existing and proposed structures, with the exception of the switchyard, will be removed.

Clean demolition costs are based on structures removal to three feet below grade.

Clean topsoil will be imported and placed on the top three feet. The entire disturbed area of the site is to be graded, to restore the natural grade to the extent possible, and seeded.

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Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1

11. Uncontaminated lead shielding remaining after shutdown was assumed to be removed from its installed locations and shipped offsite by entities having a need for the material. The entities receive the lead at no charge in return for providing the removal and shipping services.

12. No known areas of radiologically contaminated soil have been identified. Additionally, documented tritium levels in groundwater are below drinking water standards.

Therefore, no soil or groundwater remediation costs will be assumed. However, costs for environmental monitoring performed during decommissioning will include groundwater monitoring.

13. A budget for hazardous material is included in the estimate, based on the 2007 EPA report provided by FPLE. All other chemicals and hazardous materials present at shutdown are assumed to be removed and disposed of by the plant staff prior to decommissioning, as a normal part of plant operations.

14. DAEC provided information on the current amount of asbestos insulation on systems piping. It is assumed that asbestos not replaced during an outage and still remaining at shutdown will be limited to areas with higher dose rates. Therefore, this study considers that 7% of the insulation on contaminated and insulated piping will be asbestos, and disposed of as Class A waste.

15. All Class A waste is assumed to be disposed of at EnergySolutions' facility in Clive, Utah, in accordance with the existing Life-of-Plant Disposal Agreement between EnergySolutions and FPL Energy Duane Arnold, LLC dated January 2007. The following 2008 disposal rates will be applied:

Demolition Debris and Soil - $52.00/Cubic Foot plus 5% Utah taxes Oversized Debris - $100.00/Cubic Foot plus 5% Utah taxes Containerized Waste Facility - $193.00/Cubic Foot plus 12% Utah taxes Large Components - $260.00/Cubic Foot plus 5% Utah taxes Cask Shipments - $39,513/Cask

16. Class B, C and Greater-than-Class-C (GTCC) wastes disposal costs are based on the July 2008 published rates for the Barnwell facility, including applicable curie and dose rate surcharges.

17. It is assumed that all Class A low-level waste currently being accumulated on-site will be removed to a low-level waste processing and/or disposal facility prior to the end of the operating life of the plant. The disposition of such materials is assumed not to be a decommissioning cost.

18. GTCC waste generated from the segmentation of the reactor internals will be packaged in fuel bundle sized containers and stored on-site in NUHOMS canisters placed in horizontal storage modules (HSMs) at the ISFSI for final disposition at a DOE repository.

- Page 29-of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1

19. Vessel and internals curie estimates were derived from the values for the Reference BWR vessel and internals in NUREG/CR-0672 (Ref. No. 6). These values were adjusted for MWt rating, weight and decay period.

20. Scenarios 1 and 2 (existing license termination) assume that Class B and C waste generated during operations will be stored on site until 2025, at which time a facility licensed to dispose of Class B and C wastes will become available.

21. Scenarios 3 and 4 (license extension) assume that all Class B and C waste generated during operations, and wastes stored on site on an interim basis, will be disposed of prior to the end of the operating life of the plant. Therefore, the disposition of such materials is not assumed to be a decommissioning cost.

22. The spent fuel shipping schedules developed by EnergySolutions are based on data provided by FPLE. The shipping schedules assume a five year spent fuel cooling period prior to transfer to dry storage canisters or the DOE. The number of spent fuel assemblies shipped from the ISFSI to the DOE have been adjusted to full cask shipments, with residual allocations carried forward to subsequent years.

23. Spent fuel management costs include the purchase of NUHOMS-61BT dry storage canisters and HSMs required for spent fuel following shutdown, based on the requirements of each scenario. Costs of $695,662 per canister and $400,155 per HSM were assumed for this study.

24. The HSMs are assumed to have no activated concrete. The ISFSI demolition cost also assumes no activation or surface contamination of the HSMs.

25. Emergency Preparedness (FEMA) fees and Environmental Affairs costs are based on data furnished by FPLE and were adjusted by EnergySolutions to meet the requirements of each period based on the status of on-site spent fuel. The annual operating costs for these items are as follows:

FEMA fees - $1,016,289/year Environmental Affairs - $7,367/year

26. Annual property taxes in the amount of $1 0,000/year through the end of the project are included.

27. EnergySolutions has included the annual NRC 10 CFR 171.15 fees, for reactors in decommissioning, of $135,000/yr per unit until decommissioning is completed.

28. EnergySolutions has included the annual NRC 10 CFR 171.15 fees of $135,000/yr for on-site dry storage during all post-shutdown years with dry Storage. EnergySolutions has assumed that the 10 CFR Part 50 license will be continued until all fuel is offsite.

29. Annual insurance premiums are based on 2008 data supplied by FPLE, and adjusted by EnergySolutions to meet the requirements of each period. The applicable 2008 premiums provided are as follows:

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Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Nuclear Property - $508,159 Nuclear Liability - $687,577 Excess Liability - $973,058 Non-Nuclear Liability - $250,000

30. Supplies and services costs were calculated based on information provided by FPLE and adjusted by EnergySolutions to match the requirements of each period, based on staffing levels.

31. No severance costs have been included in this estimate in accordance with existing FPLE policy.

32. The decommissioning will be performed by a DGC under the management and supervision of DAEC staff. DAEC staff will be supplemented with a professional engineering consulting firm for planning and preparation, engineering design, and final status survey.

33. DAEC staff positions and average direct burdened salary data was supplied by FPLE.

These rates were current as of August 2008. An overhead rate of 43% was applied to the direct salaries to account for fringe benefits, overhead and payroll taxes.

34. Health Physics technicians used during vessel and internals removal will be supplied by DAEC staff.

35. DGC staff salaries, including overhead and profit, were determined by EnergySolutions and represent EnergySolutions' standard assumptions for these rates.

36. The professional personnel, used for the planning and preparation activities, and DGC personnel are assumed to be paid per diem at the rate of $114/day based on per diem rates in CONUS for Des Moines, Iowa.

37. Craft labor rates, for labor categories not furnished by FPLE, have been taken from the 2008 RS Means Labor Rates for the Construction Industry (Ref. No. 12), for Des Moines, Iowa. Since the skilled laborers are assumed to be supplied by the local union hall they will not be paid per diem.

38. This study has considered the impact of the September 11, 2001 terrorist attack on security force staffing and requirement. The security guard force included in this estimate has been sized accordingly.

39. This study follows the occupational exposure principles of As Low As Reasonably Achievable (ALARA) through the use of productivity loss factors that incorporate such items as the use of respiratory protection and personnel protective clothing. These factors increase the work duration and cost.

Page 31 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1

40. The costs of all required safety analyses and safety measures for the protection of the general public, the environment, and decommissioning workers are included in the cost estimates. This reflects the requirements of:

10 CFR 20 Standards for Protection Against Radiation 10 CFR 50 Domestic Licensing of Production and Utilization Facilities 10 CFR 61 Licensing Requirements for Land Disposal of Radioactive Waste 10 CFR 71 Packaging of Radioactive Material for Transport 10 CFR 72 Licensing Requirements for the Independent Storage of Spent Nuclear Fuel and High-Level Radioactive Waste 29 CFR 1910 Occupational Safety and Health Standards 49 CFR 170-189 Department of Transportation Regulations Governing the Transport of Hazardous Materials Reg. Guide 1.159 Assuring the Availability of Funds for Decommissioning Nuclear Reactors

41. Activity labor costs do not include any allowance for delays between activities, nor is there any cost allowance for craft labor retained on site while waiting for work to become available.

Page 32 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 6.0 STUDY RESULTS BY SCENARIO The study results for the four scenarios analyzed are presented in the following sections.

6.1 Scenario 1 - Base Case This scenario is based on the following:

" DECON methodology.

" No license extension, with shutdown on February 21, 2014.

" Terminate spent fuel pool operation five years after permanent unit shutdown.

" Spent fuel will be stored at the existing ISFSI.

" Class B and C waste will be temporarily stored in an on-site interim waste storage facility to be built during decommissioning. Class B and C waste are assumed to be stored on-site until 2025, which is the assumed date a licensed facility would be available to receive these wastes.

" The DOE Yucca Mountain repository, or other approved method of spent fuel disposition, will be available starting in 2025.

Spent Fuel Shipping Schedule The spent fuel shipment schedules for each scenario are based on information from FPLE and are also based, in part, on the DOE's "Acceptance Priority Ranking & Annual Capacity Report,"

dated July 2004 (Ref. No. 11). Spent fuel shipping schedules for each scenario are provided in Appendix B.

The schedule for Scenario 1 includes the disposition of 2 GTCC waste containers. Spent fuel shipments to the DOE repository from the spent fuel pool will begin in 2027. In 2011, 610 spent fuel assemblies will be transferred to MPCs as required to maintain full-core off-load capacity.

All spent fuel and GTCC will be removed from the ISFSI by 2054.

Cost and Schedule Figure 6-1 is a summary project schedule. A detailed schedule is provided in Appendix C.

Table 6-1 summarizes the period durations and total costs, including contingency, for License Termination, Spent Fuel, and Greenfield activities. A detailed cost table is provided in Appendix D, and a table of annual cash flows is provided in Appendix E. Appendix F provides an annual cash flow with the costs broken out by Labor, Equipment & Materials, Waste, Other, and Contingency categories.

Project Staffing This scenario is based on the assumption that decommissioning will be performed by an experienced and qualified DGC, with oversight and management of the decommissioning operations performed by DAEC staff. DAEC staffing levels, by organizational department and function, for each period are provided in Table 6-2. The DGC staffing levels, by organizational department and function, for each period are provided in Table 6-3.

Page 33 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Waste Disposal Volumes Waste disposal is a significant element of the decommissioning project. The estimated cubic feet of waste are summarized as follows:

Class A 377,510 Class B 1,866 Class C 756 GTCC 128 Waste disposal volumes and costs, itemized by packaging, transportation, surcharges and disposal costs by waste class and facility, are provided in Table 6-4. The waste disposal cost provided in Table 6-4 does not include contingency.

Page 34 of 58

Decommissioning -CostEstimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Figure 6-1 Scenario 1 Summary Schedule Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Storage Class B and C Waste

'ask Name E i 10222054 ... . .. ... K 1 Spent Fuel Management Uw*/*IU1 ;.1 Spnt Fuel Shipping to DOE Begins 02/21/2027 Spent Fuel Shipping Complete 02/21/2054 02/2112054 02ý121=25 Dry Pd I - Fuel Pool Island Design "'6/2212013 02/21/2019 Dry Pd 2- Spent Fuet Cooling and Transfer to Dry Storage 2/21101 Dry Pd 3 - Dry Storage During Decommiisioning 10/30/2025 Dry 0d44-Dry Storage Only...... 07126/2053 Dry Pd 5, ISFSI Decommissoning 07/2612053 10/22/2054 License Termination 12/29/2012 Unit1 Shutdown 02/2112014~ 02,21J20114 De .. n6DecomnmssoingWii, Plnin psi PrOiortoý ShutidoWn 1212912012~

• Donn--.P.d 2 ite Modific*io and Pireparations. 21Z21112011410/30/2025 02/24/2016 DonPd 4- Balance of Plant Decontamination 0512812019 Decon Pd 5 - Interim Waste Storage Facility Operation =ME 08/1012022 GmrPd 1 - Clean Bsuilding Demolition 03/31/021 08/10/2022 Gm Pd 2- Site Restoration 0611W/2022, Page 35 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-1 Scenario I Cost and Schedule Summary (2008 Dollars in Thousands)

Period No..~ Priod f' Description ~ I~..~ start End Years Total Cost License Termination (50.75(c))

Decon Pd 1 Decommissioning Planning Prior to Shutdown 12/29/2012 2/21/2014 1.14 $14,484 Decon Pd 2 Site Modifications and Preparations 2/21/2014 2/24/2016 2.00 $108,630 Decon Pd 3 Major Component Removal 2/24/2016 5/28/2019 3.25 $231,249 Decon Pd 4 Balance of Plant Decontamination 5/28/2019 3/31/2021 1.84 $99,678 Decon Pd 5 Interim Waste Storage Facility Operation 8/10/2022 10/30/2025 3.22 $44,961 Account Total 11.45 $499,002 Spent Fuel (50.54(bb))

Dry Pd 1 Fuel Pool Island Design 6/22/2013 2/21/2014 0.66 $1,257 Dry Pd 2 Spent Fuel Cooling and Transfer to Dry Storage 2/21/2014 2/21/2019 4.99 $129,721 Dry Pd 3 Dry Storage During Decommissioning 2/21/2019 10/30/2025 6.68 $26,136 Dry Pd 4 Dry Storage Only 10/30/2025 7/26/2053 27.73 $113,834 Dry Pd 5 ISFSI Decommissioning 7/26/2053 10/22/2054 1.24 $7,352 Account Total 41.30 $278,300 Greenfield Gm Pd 1 Clean Building Demolition 3/31/2021 5/18/2022 1.13 $38,078 Gm Pd 2 Site Restoration 5/18/2022 8/10/2022 0.22 $2,653 Account Total 1.35 $40,731 Scenario Total $818,033 Page 36 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-2 Scenario 1 DAEC Staff Levels Administration 2.5 29 21 20 0.25 Engineering 7.75 25 21 17 0.25 Health Physics 2.25 27 25 34 0.75 Management 2 2 2 Plant Maintenance 1.5 27 16 5 0.25 Plant Operations 3.75 31 32 17 Quality Assurance 5 3 1 Security Administration 0 2 2 3 Security Guard Force 0. 12 12 12 1 17.75 160 134 111 2.5 Spent Fuel - 50.54(bb) DAEC Staff Departmeni~i I.ry PI DryP ~-

DyPd.' Dry Pd Dry PdJ u>>

1'>A2-~, >~ 4 '5 Additional Staff for Spent Fuel Shipping 2 2 Administration 1.2 Engineering 0.75 1 1 1 Fuel Pool Maintenance and Operation Staff 19 Health Physics 7 4 4 1.5 Management 0.25 Plant Maintenance 0.25 2 2 Security Admin 5 5 5 0.5 Security Guard Force 50 5 5 5 1 81 19 19 9.45 Greenfield - DAEC Staff Department TmI Administration 9 8 Engineering 7 5 Health Physics 3 1 Management 2 1 Plant Maintenance 3 1 Quality Assurance 2 1 Security Admin 1 1 Security Guard Force 5 5 32 23 Page 37 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-3 Scenario 1 DGC Staff Levels License Termination - 50.75(c) DGC Staff IDecn IDecn I ,'neIo)CL IM

~Departmen~t Pd 1 i JP2' P4" I'd Administration 8 17 17 11 Engineering 5.5 16 16 9 Field Operations 2 11 11 8 Health Physics 3 23 35 19 Management 3 3 3 3 Quality Assurance 2 4 5 3 Waste Operations 2 16 16 23.5 76 103 69 Spent Fuel - 50.54(bb) DGC Staff Departrw<ll Administration 0 Engineering 0 Field Operations 1 Health Physics 0 Management 0 Quality Assurance .5 Waste Operations .3 1.8 Greenfield - DGC Staff I~Departm en Gm *4?G lid Administration 10 9 Engineering 11 6 Field Operations 10 5 Health Physics 1 1 Management 3 3 Quality Assurance 2 2 37 26 Page 38 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-4 Scenario 1 Waste Disposal Volumes (Cost Excludes Contingency - 2008 Dollars)

Class B and C Facility Class B 359,770W 191,340 2,750 1,866 5,411--]

3,223 $1,681,943

$778,943 $743,920

• .*÷

$474,600 $2699430

$6,805,322 $3,110,612

$1,852,615 *$3250,8

$9,911,481 Class C 105,840 756 1,365 $903,000 $177,840 $5,264,805 $784,739 $7,130,384 GTCC 62,590 128 823 $0 $91,480 $14,924,178 $473,258 $15,488,915 359,770 2,750 5,411 $1,681,943 $743,920 $26,994,305 $3,110,612 $32,530,780 EnergySolutions Class A - Debris 13,091,562 222,365 223,801 $567,787 $2,363,643 $0 $12,219,485 $15,150,915 Class A - Oversized Debris 4,488,865 67,190 67,190 $47,153 $447,470 $0 $7,054,916 $7,549,539 Class A - CWF 2,808,407 38,430 38,489 $496,994 $3,846,607 $0 $8,319,692 $12,663,294 Class A - Large Component 3,715,042 49,526 66,049 $1,172,945 $3,429,086 $0 $18,031,466 $22,633,497 24,103,876 377,510 395,529 $2,284,880 $10,086,805 $0 $45,625,559 $57,997,244 Other Local Construction Debris Landfill 61,500,530 469,161 469,161 $0 $23,001 $0 $2,385,703 $2,408,705 Process for On-Site Fill 230,100,750 3,528,212 3,528,212 $0 $0 $0 $851,373 $851,373 Scrap Metal Recycler 161,197,811 1,100,763 1,100,763 $0 $354,635 $0 $0 $354,635 Grand Total 477,262,737 5,478,396 5,499,076 $3,966,823 $11,208,362 $26,994,305 $51,973,247 $94,142,736 Page 39 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 6.2 Scenario 2 - Base Case, Except SAFSTOR This scenario is identical to Scenario 1 (the Base Case) with the exception that the decommissioning alternative is a SAFSTOR rather than DECON methodology, and Class B and C waste generated during operations and SAFSTOR preparations will be stored in the existing Low Level Radwaste Storage Building until 2025, which is the assumed date a licensed facility would be available to receive these wastes.

Spent Fuel Shipping Schedule The spent fuel shipping schedule for Scenario 2 is identical to Scenario 1. Due to the decay of activation products in the reactor internals over the SAFSTOR dormancy no GTCC waste is generated in this scenario.

Cost and Schedule Figure 6-2 is a summary project schedule. A detailed schedule is provided in Appendix C.

Table 6-5 summarizes the period durations and total costs, including contingency, for License Termination, Spent Fuel, and Greenfield activities. A detailed cost table is provided in Appendix D, and a table of annual cash flows is provided in Appendix E. Appendix F provides an annual cash flow with the costs broken out by Labor, Equipment & Materials, Waste, Other, and Contingency categories.

Project Staffing This scenario is based on the assumption that decommissioning will be performed by an experienced and qualified DGC, with oversight and management of the decommissioning operations performed by DAEC staff. DAEC staffing levels, by organizational department and function, for each period are provided in Table 6-6. The DGC staffing levels, by organizational department and function, for each period are provided in Table 6-7.

Waste Disposal Volumes Waste disposal is a significant element of the decommissioning project. The estimated cubic feet of waste are summarized as follows:

Class A 379,944 Class B 1,287 Class C 884 Waste disposal volumes and costs, itemized by packaging, transportation, surcharges and disposal costs by waste class and facility, are provided in Table 6-8. The waste disposal cost provided in Table 6-8 does not include contingency.

-Page 40 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Figure 6-2 Scenario 2 Summary Schedule SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Storage Class B and C Waste T83k No"e SI I__ Finish H 24 15 8 9,OtI1314151517181*21 2223242 262728"303I2333435363738$4804142 43445 47 8 50,ý42 061 4555 57 S*60*!*

Spent Fuel Management______ 06122120131 0102112054 MWEL HEM Spent Fuel Shipping to DOE Repository Begins _________

02/241/12027 212 S; !.2)2 Spent Fuel Shipping Complete 02/1(2054 Dry kd 1 -Fuel Poiol islad Deg 0012212013 02.I.

2..o..

0 02P21/2014 02/20/2019 Dry Pd 2- Spent Fuel Cooling and Transfer to Dry Storage 2/21120141 02/2WJ2019 w ENO 07/2W12053 License Termination I M2/2012 10/23/2074 mm

...Unit I"shutdown 0212 1/20 14 *2121, SAFSTOR Pi 1- SAFSTOR Plantning Prior to Shutdown 12/2912012 02..11201 6AFST'ORd-2 -*AF*OR Preparations Following Shutdown V2/22014

... STOR Pd 3- SAFSTOR Preparations Delay During Wet Foel Storage 02123/2015 SAFSTORd Ad-C.ompljeion i-fSAFOR Preparations U220J2019~ 2/21/2054 GAFSTOR Pd 5 - Dormancy With Interim Waste and Dry Spent Fuel Storage 12118/20,19 SAFSTOR Pd 6 - Dormancy With Dry Storage 04/01/2025!

SAP0STR -Pd? - Dormancy Only 10/21/2054 E. d- ý-y 1--1-1.............

-&SAPtOR ,s st i- -...

-Pd"--Dc--ain"- * ..... PanngDrn Drac . . .. . ...... . .

S .FSTOPd 9-imatemn !j'Sits Moificationsaend Preparations 021201208 102112074

'SAFSTOIIPd 10)- Major Component RemovalI Will

..... . 07120/2074 SAFSTOA-Pd *1i *Site'Dec'o ntaminatlon OWO&82071 Cm~Pd1O lenBil dn Demolition. W52312073 1

GmnPd 2 - Site Restoration 0711012074 10/23/2074 Page 41 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-5 Scenario 2 Cost and Schedule Summary (2008 Dollars in Thousands)

Period No. 'riod Pe:> Description Start Endj ss ,e Total Cost License Termination (50.75(c))

SAFSTOR Pd I SAFSTOR Planning Prior to Shutdown 12/29/2012 2/21/2014 1.14 $12,5711 SAFSTORPd 2 SAFSTOR Preparations Following Shutdown 2/21/2014 2/23/2015 1.00 $50,4811 SAFSTOR Pd 3 SAFSTOR Preparation Delay During Spent Fuel Operations 2/23/2015 2/20/2019 3.99 $7,1471 SAFSTOR Pd 4 Completion of SAFSTOR Preparations 2/20/2019 12/18/2019 0.82 $12,9351 SAFSTOR Pd 5 Dormancy With Interim Waste and Dry Spent Fuel Storage 12/18/2019 4/1/2025 5.28 $20,0631 SAFSTOR Pd 6 Dormancy With Dry Storage 4/1/2025 10/21/2054 29.55 $42,7931 SAFSTOR Pd 7 Dormancy Only 10/21/2054 5/31/2066 11.60 $26,7611 SAFSTOR Pd 8 Decommissioning Planning During Dormancy 5/31/2066 2/20/2068 1.72 $21,1411 SAFSTOR Pd 9 Dismantlement Site Modifications and Preparation 2/20/2068 9/9/2069 1.55 $111,0371 SAFSTOR Pd 10 Major Component Removal 9/9/2069 9/8/2071 1.99 $192,0361 SAFSTOR Pd 11 Site Decontamination 9/8/2071 5/23/2073 1.70 $81,332 Account Total 60.34 $578,2971 Spent Fuel (50.54(bb))

Dry Pd 1 Fuel Pool Island Design 6/22/2013 2/21/2014 0.66 $1,2571 Dry Pd 2 Spent Fuel Cooling and Transfer to Dry Storage 2/21/2014 2/20/2019 4.99 $129,6771 Dry Pd 3 Dry Storage During Dormancy 2/20/2019 7/26/2053 34.42 $135,9521 Dry Pd 4 ISFSI Decommissioning 7/26/2053 10/21/2054 1.23 $7,155 Account Total 41.30 $274,0411 Greenfield Gm Pd 1 Clean Building Demolition 5/23/2073 7/10/2074 1.13 $38,1551 Grn Pd 2 Site Restoration 7/10/2074 10/23/2074 0.28 $3,1431 Account Total 1.41 $41,2981 Scenario Total $893,63611 Page 42 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-6 Scenario 2 DAEC Staff Levels License Termination - 50.75(c) DAEC Staff AI I k[Qk SAFTR SESTOR 1411 RSFSd ISF'cP ,,,%FS'FOR SKTOR()KIN 'SAF'STOR SATFSTORý,I (1,'AFSTOR I

FDePartmeL01 P'd 1I Pd 2 I'l 1)d111 Pd5<

I'dP4 ~ Pd 6 I'd -< I'll X 1Pd9 ~ 1) 1()I'l Pd11 Administration 2.5 29 0.25 1.25 0.25 0.25 0.25 2.5 29 21 20 Engineering 7.75 25 0.25 3 0.25 0.25 0.25 7.75 25 21 17 Health Physics 2.25 27 0.75 7 0.75 0.75 0.75 2.25 27 25 34 Management 2 2 2 2 Plant Maintenance 1.5 27 0.25 7 0.25 0.25 0.25 1.5 27 16 5 Plant Operations 3.75 31 4 3.75 31 32 17 Quality Assurance 5 5 3 1 Security Administration 0 2 0.5 0.5 0 2 2 3 Security Guard Force 0 12 1 5 1 1 5 0 12 12 12 17.75 160 2.5 27.75 2.5 2.5 7 17.75 160 134 111 Page 43 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-6 Scenario 2 DAEC Staff Levels (Continued)

Spent Fuel - 50.54(bb) DAEC Staff Department> 'rd 1 DrY2 d Dry P Dry, 1 Additional Staff for Spent Fuel Shipping 2 Administration 1.2 Engineering 0.75 1 1 Fuel Pool Maintenance and Operation Staff 19 Health Physics 7 4 1.5 Management 0.25 Plant Maintenance 0.25 2 Security Admin 5 5 0.5 Security Guard Force 50 5 5 1 81 19 9.45 Greenfield - DAEC Staff Administration 9 8 Engineering 7 5 Health Physics 3 1 Management 2 1 Plant Maintenance 3 1 Quality Assurance 2 1 Security Admin 1 1 Security Guard Force 5 5 32 23 Page 44 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-7 Scenario 2 DGC Staff Levels License Termination - 50.75(c) DGC Staff SA IFS I ()R SFIS()RK I .S USTOR4 AAFSTOR' SAFSTORI (W FSO SAFSTOR >SAFFISW\VTOR SAFS!TORSA,,ýFSTOBJ<SAFSTOR~

~Doepatent(1 P1~1 I 'l- 3 Pd Id4 Id5 P~d6 Pd7l I Pd8XP4l Id10 Pd I1'>'Pry Pd Administration 0 Engineering 0 Field Operations 1 Health Physics 0 Management 0 Quality Assurance .5 Waste Operations .3 1.8 Greenfield - DGC Staff

• eparnnent( GfPd.>

1 Gm Pd Administration 10 9 Engineering 11 6 Field Operations 10 5 Health Physics 1 1 Management 3 3 Quality Assurance 2 2 37 26 Page 45 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-8 Scenario 2 Waste Disposal Volumes (Cost Excludes Contingency - 2008 Dollars)

Class B and C Facility D

Class B 122,531 1,287 2,104 $207,315 $722,333 $4,226,706 $1,209,590 $6,365,943 Class C 168,430 884 2,015 $903,000 $745,693 $8,172,367 $1,158,424 $10,979,483 GTCC 290,961 2,171 4,119 $1,110,315 $1,468,026 $12,399,073 $2,368,013 $17,345,427 EnergySolutions Class A - Debris 13,304,744 224,683 226,652 $569,787 $2,382,954 $0 $12,375,127 $15,327,868 Class A -Oversized Debris 4,488,865 67,190 67,190 $47,153 $447,470 $0 $7,054,916 $7,549,539 Class A - CWF 2,808,407 38,430 38,489 $496,994 $3,846,607 $0 $8,319,692 $12,663,294 Class A - Large Component 3,746,792 49,642 66,425 $1,172,945 $3,562,890 $0 $18,134,004 $22,869,840 24,348,808 379,944 398,755 $2,286,880 $10,239,921 $0 $45,883,740 $58,410,540 Other Local Construction Debris Landfill 58,842,438 458,767 458,767 $0 $23,001 $0 $2,291,218 $2,314,220 Process for On-Site Fill 230,100,750 3,528,212 3,528,212 $0 $0 $0 $851,373 $851,373 Scrap Metal Recycler 161,197,811 1,100,763 1,100,763 $0 $354,635 $0 $0 $354,635 Grand Total 474,780,768 5,469,857 5,490,616 $3,397,195 $12,085,583 $12,399,073 $51,394,344 $79,276,195 Page 46 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 6.3 Scenario 3 - Base Case, Except License Extension This scenario is identical to Scenario 1 (the Base Case) with the exception of a 20 year license extension, and therefore no on-site interim waste storage facility is required for Class B and C waste. All legacy Class B and C waste generated during operations, and stored until a licensed facility is available to accept these wastes, is assumed to be disposed of during operations.

Spent Fuel Shipping Schedule The spent fuel shipping schedule for Scenario 3 is provided in Appendix B. It includes the disposition of 2 GTCC waste containers. Spent fuel shipments to the DOE repository from the spent fuel pool will begin in 2027. During operations 1,281 spent fuel assemblies will be transferred to MPCs as required to maintain full-core off-load capacity. All spent fuel and GTCC will be removed from the ISFSI by 2067.

Cost and Schedule Figure 6-3 is a summary project schedule. A detailed schedule is provided in Appendix C.

Table 6-9 summarizes the period durations and total costs, including contingency, for License Termination, Spent Fuel, and Greenfield activities. A detailed cost table is provided in Appendix D, and a table of annual cash flows is provided in Appendix E. Appendix F provides an annual cash flow with the costs broken out by Labor, Equipment & Materials, Waste, Other, and Contingency categories.

Proiect Staffing Staffing levels for each period of this case are the same as for Scenario 1. DAEC staffing levels, by organizational department and function, for each period are provided in Table 6-2. The DGC staffing levels, by organizational department and function, for each period are provided in Table 6-3.

Waste Disposal Volumes Waste disposal is a significant element of the decommissioning project. The estimated cubic feet of waste are summarized as follows:

Class A 377,596 Class B 1,866 Class C 540 GTCC 128 Waste disposal volumes and costs, itemized by packaging, transportation, surcharges and disposal costs by waste class and facility, are provided in Table 6-10. The waste disposal cost provided in Table 6-10 does not include contingency.

Page 47 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Figure 6-3 Scenario 3 Summary Schedule Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 TAA My -------- T -i] I Fnish 1.11 ' 2 13 14 1 1 1 1 1 1 1 1 910 2 121314152 1710191011123 3 3 3 T A

..........~s*g*

Spfel Fuel Management ++:*++s

• Re~ s * +'*Pm"+* ..... .................

o0 /22/,203 o i I *m.m.11.m.m.1u111.,mm.m.m.m.m...m.m.1 Spent Fuel Shipping to DOE Repository in Progress 02/21/2034 08221/2034 2121 Spent Fuel Shipping Compltet 02/23/2067 Dry Pd 1- Fuiet Pool Island Design . bjd.. 033 2/21/2034 Dry Pd 2 -Spent Fuel Cooling and Transfer to Dry Storage 2/21/234 02/21/2039 Dry Pd 3.-Dry Storage During DecommissionIng 02/21/2039 0&/10/2042 Dry Pdl4.- Dry Storage Only 08/10/2042 07/28M268 Dry Pd 5 - ISIFSI Decommissioning 07/2812086 ..... ....

10/23/2067 ..

............+

L"censea Ter mlnatio n 8t i t i g...

• i o ...........................

.. .l+ ......... ..................

..........I12/29/2032 3i ' +jh~hr~ii~~~n V2 rili-It~u-tadon 2/21/2034 2121M234 DonPd, 1 - Decommissioning Planning Prior to Shutdown 12/2912032 ..2/21/20314 Decon Pd82 - Site Modlifications end Preparations 2121/2034 Decon Pd 3 - Major Component Removal 02/2312036 Decon Pd 4 -Balance of Plant Decontamination P..d

.11G.61r-n. 1 I CleanIBuilding Demolition

- ~ 05/2712039 03/3112041 03/31/2041 05118/242 Gmn Pd 2 - Site Restoration - ~ 05/18/2042 08/10/2042 Page 48 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-9 Scenario 3 Cost and Schedule Summary (2008 Dollars in Thousands) yPeriod No. Period Description. §> Start Ehd Years Tc~wVCost~

License Termination (50.75(c))

Decon Pd 1 Decommissioning Planning Prior to Shutdown 12/29/2032 2/21/2034 1.14 $14,484 Decon Pd 2 Site Modifications and Preparations 2/21/2034 2/23/2036 2.00 $108,410 Decon Pd 3 Major Component Removal 2/23/2036 5/27/2039 3.25 $261,821 Decon Pd 4 Balance of Plant Decontamination 5/27/2039 3/31/2041 1.84 $101,683 Account Total 8.23 $486,398 Spent Fuel (50.54(bb))

Dry Pd 1 Fuel Pool Island Design 6/22/2033 2/21/2034 0.66 $1,257 Dry Pd 2 Spent Fuel Cooling and Transfer to Dry Storage 2/21/2034 2/21/2039 4.99 $114,599 Dry Pd 3 Dry Storage During Dormancy 2/21/2039 8/10/2042 3.46 $13,545 Dry Pd 4 Dry Storage Only 8/10/2042 7/28/2066 23.96 $98,353 Dry Pd 5 ISFSI Decommissioning 7/28/2066 10/23/2067 1.23 $6,714 Account Total 34.30 $234,468 Greenfield Grn Pd 1 Clean Building Demolition 3/31/2041 5/18/2042 1.13 $38,078 Gm Pd 2 Site Restoration 5/18/2042 8/10/2042 0.22 $2,653 Account Total 1.35 $40,731 Scenario Total $761,591 Page 49 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-10 Scenario 3 Waste Disposal Volumes (Cost Excludes Contingency - 2008 Dollars)

Facility and Wate a, ý asteý Wite a Burial Iranporationi 'urchargeý Ha Baa a It[ i)o Weldiht (LIBý, Vo lumm(G1 ) :Volume cF Cost Ck)s t ~ Costo

'(),

Class B and C Facility Class B 179,852 1,866 3,223 $145,143 $1,277,588 $6,805,322 $1,852,615 $10,080,669 Class C 75,600 540 975 $0 $851,780 $3,760,575 $560,528 $5,172,882 GTCC 62.590 128 823 $0 $113,571 $14,924,178 $473,258 $15,511,006 318,042 2,534 5,021 $145,143 $2,242,939 $25,490,075 $2,886,401 $30,764,557 EnergySolutions Class A - Debris 13,091,735 222,451 223,888 $567,847 $2,364,227 $0 $12,224,196 $15,156,271 Class A - Oversized Debris 4,488,865 67,190 67,190 $47,153 $447,470 $0 $7,054,916 $7,549,539 Class A - CWF 2,808,407 38,430 38,489 $496,994 $3,846,607 $0 $8,319,692 $12,663,294 Class A -Large Component 3,715,042 49,526 66,049 $1,172,945 $3,429,086 $0 $18,031,466 $22,633,497 24,104,049 377,596 395,615 $2,284,940 $10,087,389 $0 $45,630,270 $58,002,600 Other Local Construction Debris Landfill 48,206,018 374,200 374,200 $0 $23,001 $0 $1,853,329 $1,876,331 Process for On-Site Fill 230,100,750 3,528,212 3,528,212 $0 $0 $0 $851,373 $851,373 Scrap Metal Recycler 161,197,811 1,100,763 1,100,763 $0 $354,635 $0 $0 $354,635 Grand Total 463,926,670 5,383,305 5,403,811 $2,430,084 $12,707,964 $25,490,075 $51,221,373 $91,849,496 Page 50 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 6.4 Scenario 4 - Base Case, Except SAFSTOR and License Extension This scenario is identical to Scenario 2 with the exception of a 20 year license extension, and therefore no on-site interim waste storage facility is required for Class B and C waste. Identical to Scenario 3 all legacy Class B and C waste generated during operations, and stored until a licensed facility is available to accept these wastes, is assumed to be disposed of during operations.

Spent Fuel Shipping Schedule The spent fuel shipping schedule for Scenario 4 is identical to Scenario 3. Due to the decay of activation products in the reactor internals over the SAFSTOR dormancy no GTCC waste is generated in this scenario.

Cost and Schedule Figure 6-4 is a summary project schedule. A detailed schedule is provided in Appendix C.

Table 6-11 summarizes the period durations and total costs, including contingency, for License Termination, Spent Fuel, and Greenfield activities. A detailed cost table is provided in Appendix D, and a table of annual cash flows is provided in Appendix E. Appendix F provides an annual cash flow with the costs broken out by Labor, Equipment & Materials, Waste, Other, and Contingency categories.

Project Staffing DAEC staffing levels, by organizational department and function, for each period are provided in Table 6-11. The DGC staffing levels, by organizational department and function, for each period are provided in Table 6-12.

Waste Disposal Volumes Waste disposal is a significant element of the decommissioning project. The estimated cubic feet of waste are summarized as follows:

Class A 379,855 Class B 1,462 Class C 668 Waste disposal volumes and costs, itemized by packaging, transportation, surcharges and disposal costs by waste class and facility, are provided in Table 6-13. The waste disposal cost provided in Table 6-13 does not include contingency.

Page 51 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Figure 6-4 Scenario 4 Summary Schedule SAFSTOR, License Extension, Yucca Mountain Opening 2025

_______________________________________________________________________________ 12314 lIt lIt 151511~

o:pensrue! Matiagenemen __________ /672129331 10/2412057 i I II Spent Fuel Shlp i to DOERepositotry in Progress 02/2112034.

Spent FuelShivlirkio Woerset _____________ 24/07 Di/2f2w3 D.....F.ool Island Design ______2...

02/24/2087 WI Dry Pd 2 - Spent Fuel Cooling and Transfer to Dry Storage 2/21/2034 02/2012039 l~~l Dry Pal3 -Dry Storage During Donnancy 02120120391 2121/2034 U-_ I Dry Pal4 - SIFSlDecommlissioning 107/2W12066 10,24/2067 License Termination 12r29,2032 0812102094 Shutdown *tI /1212034 2/2f2l04 SAPOTOR Pat1 - SAPOTOR Planning Prior to Shutdown 12129/2032~ 21V12034 SAFSTOR Pd 2- SAFSTOR Preparations Following Shutdown 2121/2034 02t2212035 sAFSTOR Pat3 - SAPSTOR Preprallons Delay During Spent Fuell Pool Operations 02/22/2038 02/202039 I'WNNO SAFSTOFI Pd 4 - Completion of SAFSTOR Preparations 02.2012039 1211W/2039 SAFSTOIIPd 5 -DormancyDurigDry Storag 12/11&2039~ U, SAFSTOR Pd86 - Dormancy Only 10124/207 O10124/00 SAFSTOR Pd 7 - Decommlssionlng Planning During Dorancny __' 0 o31120 8 1 1

'd - Dimnlmn ieMdfctosand Preparatilons

-TA~d8 0-j212/288' 07/1512089 11 1W Pd9-aoromponent

.ASO Removal 07/18/2089' 1 1 ~

IAFS"OAPd id O- Setacontamlnalion 07/14M2091 03/262093 End0a ee..SAF.TO.Alow... . 02ce/212lf2094.

I W 05/142094 1 1 1 (IrnPd Dmol~~on031211=93~

I- Clan uildng W 2-134,......r.n.. o .. .... .~l .......... 08/15= 94~ 051'2502094 w Page 52 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-11 Scenario 4 DAEC Staff Levels IAUIIIIISINlsaoLnI1 Z.:. ZY U.L) IL.L) U.Z) U.L) Z./Y /- IU Engineering 7.75 25 0.25 3 0.25 0.25 7.75 25 21 17 Health Physics 2.25 27 0.75 7 0.75 0.75 2.25 27 25 34 Management 2 2 2 2 Plant Maintenance 1.5 27 0.25 7 0.25 0.25 1.5 27 16 5 Plant Operations 3.75 31 4 3.75 31 32 17 Quality Assurance 5 5 3 1 Security Administration 0 2 0.5 0.5 0 2 2 3 Security Guard Force 0 12 1 5 1 5 0 12 12 12 17.75 160 2.5 27.75 2.5 7 17.75 160 134 111 Page 53 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-11 Scenario 4 DAEC Staff Levels (Continued)

Spent Fuel - 50.54(bb) DAEC Staff Dry PIPdDry Id th7yPd Dry Pd Additional Staff for Spent Fuel Shipping 2 Administration 1.2 Engineering 0.75 1 1 Fuel Pool Maintenance and Operation Staff 19 Health Physics 7 4 1.5 Management 0.25 Plant Maintenance 0.25 2 Security Admin 5 5 0.5 Security Guard Force 50 5 5 1 81 19 9.45 Greenfield - DAEC Staff Administration 9 8 Engineering 7 5 Health Physics 3 1 Management 2 1 Plant Maintenance 3 1 Quality Assurance 2 1 Security Admin 1 1 Security Guard Force 5 5 32 23 Page 54 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-12 Scenario 4 DGC Staff Levels License Termination -:50.75(c) DGC Staff IAýTOR I SAFST01 R  ;,kSXESk <SAF~S I(W 1 \R1 "AFTR*

SAFS111 R SA I, TOR)1ý W SA1AiTO A \ I(I' SF I~T~

W I I Pd 2 I~d 3 Pd 4 Id Pd60 I'd 7 Pd8 IX Pd9) Pd WO<

Administration 8 17 8 8 17 17 11 Engineering 5.5 16 7 5.5 16 16 9 Field Operations 2 1I 2 2 11 11 8 Health Physics 3 23 5 3 23 35 19 Management 3 3 3 3 3 3 3 Quality Assurance 2 4 3 2 4 5 3 Waste Operations 2 8 2 16 16 23.5 76 0 36 0 0 23.5 76 103 69 Spent Fuel - 50.54(bb) DGC Staff Department nIfd Administration 0 Engineering 0 Field Operations I Health Physics 0 Management 0 Quality Assurance .5 Waste Operations .3 1.8 Greenfield - DGC Staff

~ Grn Pd. >GMI'~d Administration 10 9 Engineering 11 6 Field Operations 10 5 Health Physics 1 1 Management 3 3 Oualitv Assurance 2 2 37 26 Page 55 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-13 Scenario 4 Cost and Schedule Summary (2008 Dollars in Thousands)

PeriodN<

No. Period

- escription , , Strt >Ker  ::t Y*e$: Total License Termination (50.75(c))

SAFSTORPd 1 SAFSTOR Planning Prior to Shutdown 12/29/2032 2/21/2034 1.14 $12,571 SAFSTOR Pd 2 SAFSTOR Preparations Following Shutdown 2/21/2034 2/22/2035 1.00 $52,050 SAFSTOR Pd 3 SAFSTOR Preparation Delay During Spent Fuel Operations 2/22/2035 2/20/2039 3.99 $7,151 SAFSTOR Pd 4 Completion SAFSTOR Preparations 2/20/2039 12/18/2039 0.82 $20,234 SAFSTOR Pd 5 Dormancy With Dry Storage 12/18/2039 10/24/2067 27.85 $44,354 SAFSTOR Pd 6 Dormancy Only 10/24/2067 5/31/2086 18.60 $42,612 SAFSTOR Pd 7 Decommissioning Planning During Dormancy 5/31/2086 2/20/2088 1.72 $21,485 SAFSTOR Pd 8 Dismantlement Site Modifications and Preparation 2/20/2088 7/15/2089 1.39 $105,122 SAFSTOR Pd 9 Major Component Removal 7/15/2089 7/14/2091 1.99 $191,870 SAFSTOR Pd 10 Site Decontamination 7/14/2091 3/28/2093 1.70 $80,695 Account Total 60.20 $578,144 Spent Fuel 450.54(bb))

Dry Pd 1 Fuel Pool Island Design 6/22/2033 2/21/2034 0.66 $1,257 Dry Pd 2 Spent Fuel Cooling and Transfer to Dry Storage 2/21/2034 2/20/2039 4.99 $114,555 Dry Pd 3 Dry Storage During Dormancy 2/20/2039 7/28/2066 27.43 $108,328 Dry Pd 4 ISFSI Decommissioning 7/28/2066 10/24/2067 1.24 $6,527 Account Total 34.32 $230,667 Greenfield Gm Pd 1 Clean Building Demolition 3/28/2093 5/15/2094 1.13 $38,155 Gm Pd 2 Site Restoration 5/15/2094 8/28/2094 0.28 $3,143 Account Total 1.41 $41,298 Scenario Total $850,109 Page 56 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Table 6-14 Scenario 4 Waste Disposal Volumes (Cost Excludes Contingency - 2008 Dollars)

',Is tcl ýaste Bu rial .... Ias rmspor'tio St1 L Ba*SC Brfia1 Total £ an<Y!stt-Wiht G B)~ oj(jj F)<! Voln ((I-I Cost otstst Cost, Dsosl Class B and C Facility Class B 130,230 1,462 2,395 $116,115 $863,072 $4,586,706 $1,377,116 $6,943,008 Class C 138,190 668 1,625 $0 $1,419,633 $6,668,137 $934,213 $9,021,982 GTCC 268,420 2,130 4,020 $116,115 $2,282,704 $11,254,843 $2,311,328 $15,964,990 EnergySolutions Class A - Debris 13,304,566 224,594 226,563 $569,725 $2,382,352 $0 $12,370,273 $15,322,349 Class A - Oversized Debris 4,488,865 67,190 67,190 $47,153 $447,470 $0 $7,054,916 $7,549,539 Class A -CWF 2,808,407 38,430 38,489 $496,994 $3,846,607 $0 $8,319,692 $12,663,294 Class A - Large Component 3,746,792 49,642 66,425 $1,172,945 $3,562,890 $0 $18,134,004 $22,869,840 24,348,630 379,855 398,666 $2,286,818 $10,239,319 $0 $45,878,885 $58,405,022 Other Local Construction Debris Landfill 49,809,876 394,249 394,249 $0 $23,001 $0 $1,929,513 $1,952,514 Process for On-Site Fill 230,100,750 3,528,212 3,528,212 $0 $0 $0 $851,373 $851,373 Scrap Metal Recycler 161,197,811 1,100,763 1,100,763 $0 $354,635 $0 $0 $354,635 Grand Total 465,725,487 5,405,209 5,425,910 $2,402,933 $12,899,660 $11,254,843 $50,971,099 $77,528,533 Page 57 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1

7.0 REFERENCES

1. U.S. Nuclear Regulatory Commission, "Domestic Licensing of Production and Utilization Facilities," 10 CFR Part 50, 2008, Available from http://www.nrc. gov/reading-rm/doc-collections/cfr/part05O/full-text.html.

2. Atomic Industrial Forum, Inc., "Guidelines for Producing Commercial Nuclear Power Plant Decommissioning Cost Estimates," AIF/NESP-036, May 1986.

3. U.S. Nuclear Regulatory Commission, "Standard Format and Content of Decommissioning Cost Estimates for Nuclear Power Reactors," Regulatory Guide 1.202, February 2005.

4. Federal Register, Vol. 4, "Standard Contract for Disposal of Spent Nuclear Fuel and/or High-Level Radioactive Waste," NRC 10 CFR Part 961 (DOE), January 1, 1999.

5. U.S. Nuclear Regulatory Commission, "Technology, Safety and Costs of Decommissioning a Reference Pressurized Water Reactor Power Station," NUREG/CR-0130, June 1978.

6. U.S. Nuclear Regulatory Commission, "Technology, Safety and Costs of Decommissioning a Reference Boiling Water Reactor Power Station," NUREG/CR-0672, June 1980.

7. ORNL/NTRC-006, Rev. 0, "Transportation Routing Analysis Geographic Information System (TRAGIS) User's Manual," June 2003.

8. Life-of-Plant Disposal Agreement, between EnergySolutions,LLC and FPL Energy Duane Arnold, LLC, dated January 2007.

9. U.S. Nuclear Regulatory Commission, "Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM)," NUREG- 1575, Rev. 1, August 2000.

10. U.S. Department of Energy, "Cost Estimating Guide," DOE G 430.1-1, March 1997.

11. U.S. Department of Energy, "Acceptance Priority Ranking & Annual Capacity Report,"

DOE/RW-0567, July 2004.

12. RSMeans, "Labor Rates for the Construction Industry," 2008.

Page 58 of 58

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Appendix A List of Systems and Structures

Duane Arnold Energy Center System and Structure List Unit 1 Type System Name or Description ESS Area Rad Monitoring ESS Breathing Air ESS C02 Fire Protection ESS Control Bldg HVAC ESS Diesel Generator HVAC ESS Diesel Oil System ESS Domestic Water ESS Drywell Sumps ESS Fire Protection ESS Fuel Pool Cooling & Cleanup ESS Instrument Air ESS Liquid Radwaste ESS LLRPSF Area HVAC ESS LLRPSF Area Sumps ESS Offgas Exhaust ESS Primary Containment ESS Primary Containment HVAC ESS Radwaste Bldg HVAC ESS Radwaste Bldg Sumps ESS Reactor Bldg HVAC ESS Reactor Bldg Sumps ESS RW Evaporator & Solid ESS Service Air ESS Solid Radwaste ESS Stack Gas & Bldg Kaman Rad Monitoring ESS Standby Diesel Generator ESS Training Center & Equipment ESS Turbine Bldg HVAC ESS Turbine RB Radwaste Bldg Sampling ESS Well Water NON Admin Bldg Sumps NON Administration Bldg HVAC NON Aux Heating Sys Boiler NON Chlorination & Acid Feed NON Circulating Water NON Condensate & Demin Water NON Condensate Demineralizer NON Condenser Air Removal NON Containment Atm Dilution NON Containment Atmosphere Control NON Cooling Tower NON Data Acquisition Center HVAC NON Drywell Radiation Monitors NON Electrical NON Extract Steam Htr-Vents-Drns NON Feedwater Page 1 of3 Printed: 10/17/2008 8:21:11 AM 8:21:11 AM Page I of 3

Duane Arnold Energy Center System and Structure List Unit 1 Type System Name or Description NON General Service Water NON H2 Water Chemistry NON Hydrogen Seal Oil NON Intake Structure HVAC NON Lube Oil Transfer & Storage NON Mach Shop & OG Bldg HVAC NON Makeup Demineralizer NON Misc HVAC NON Nitrogen NON Offgas Bldg Sumps NON Offgas Recombiner NON Post Accident Sampling NON Pumphouse HVAC NON Reactor Bldg Closed Cooling Water NON Reactor Water Cleanup NON Residual Heat Removal NON RHR Service Water NON River Water Supply NON Sanitary Drains NON Standby Gas Treatment NON Stator Cooling NON Technical Suppor Center HVAC NON Torus Vacuum Breakers NON Turbine Bldg Sumps NSSS Condensate NSSS Condenser NSSS CRD Hydraulic NSSS Emergency Service Water NSSS High Pressure Coolant Injection NSSS Low Pressure Core Spray NSSS Main Steam NSSS Nuclear Boiler NSSS Reactor Core Isolation Cooling NSSS Reactor Vessel Recirculation NSSS Standby Liquid Control NSSS Traversing Incore Probe Cal NSSS Turbine NSSS Turbine Steam Seals & Drains STRUC Administration Building STRUC Badging Center STRUC Breathing Air Enclosure STRUC Circulating Water Pipe STRUC Circulating Water Tower No 1 STRUC Circulating Water Tower No 2 STRUC Civil Shop STRUC Compressor Building Page 2 of 3 10/17/2008 8:21:11 Printed: 10/17/2008 AM 8:21:11 AM Page 2 of 3

Duane Arnold Energy Center System and Structure List Unit 1 Type System Name or Description STRUC Condensate Storage Tank Foundation STRUC Construction Support Center STRVC Control Building STRUC Cooling Tower Control & Valve House 1 STRUC Cooling Tower Control & Valve House 2 STRUC Cooling Tower Training STRUC Data Acquisition Center STRUC Discharge Structure STRUC East Warehouse STRUC Electrical Equipment Building - ISFSI STRUC Electrical Maintenance STRUC Existing Concrete Slabs STRUC Existing Waste Water Treatment Plant STRUC Guard Facility STRUC HPCI and RCIC Building STRUC Intake Structure STRUC ISFSI - Phase 3 STRUC LLRPSF Transformer Foundation.

STRUC Low Level Radwaste Storage and Processing STRUC Machine Shop STRUC Mechanical Maintenance STRUC New Site Support Building STRUC Off Gas Retention Building STRUC Off Gas Stack STRUC Oil Drum Storage Building STRUC Plant Support Center STRUC Pump House STRUC Radwaste Building STRUC Railroad Air-Lock STRUC Reactor Building STRUC Site Transformer Foundations STRUC Sluice Gate Structure STRUC Sulfuric Acid Tank Foundation STRUC Support Shop STRUC Technical Support Center STRUC Trailer Pad STRUC Training Center STRUC Turbine Building STRUC Turbine Pedestal STRUC Underground Diesel Oil Tank STRUC Underground Fuel Oil Tank STRUC Waste Water Treatment Plant STRUC Well Water Pump House 1,2,3,4 STRUC West Warehouse Page 3 of 3 Printed:

Printed: 10/17/2008 8:21:11 AM 8:21:11 AM Page 3 of 3

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Appendix B Spent Fuel Shipping Schedules

Scenarios 1 & 2 - Existing License Termination, Dry Storage, DOE Repository Opens 2025

<7'eel , Dsy~aj \oltotý IPoo e Assmbi' 2'S~ite On Frj~ om DOh~ fimn1. Shipped t 2008 0 10 0 1758 610 2368 0 0 0 2009 152 0 0 1910 610 2520 0 0 0 2010 152 0 0 2062 610 2672 0 0 0 2011 0 10 610 1452 1220 2672 0 0 0 2012 152 0 0 1604 1220 2824 0 0 0 2013 0 0 0 1604 1220 2824 0 0 0 2014 368 0 0 1972 1220 3192 0 0 0 2015 0 0 0 1972 1220 3192 0 0 0 2016 0 0 0 1972 1220 3192 0 0 0 2017 0 10 610 1362 1830 3192 0 0 0 2018 0 10 610 752 2440 3192 0 0 0 2019 0 13 752 0 3192 3192 0 0 0 2020 0 0 0 0 3192 3192 0 0 0 2021 0 0 0 0 3192 3192 0 0 0 2022 0 0 0 0 3192 3192 0 0 0 2023 0 0 0 0 3192 3192 0 0 0 2024 0 0 0 0 3192 3192 0 0 0 2025 0 0 0 0 3192 3192 0 0 0 2026 0 0 0 0 3192 3192 0 0 0 2027 0 0 0 0 3131 3131 0 61 61 2028 0 0 0 0 2948 2948 0 183 244 2029 0 0 0 0 2765 2765 0 183 427 2030 0 0 0 0 2643 2643 0 122 549 2031 0 0 0 0 2521 2521 0 122 671 2032 0 0 0 0 2399 2399 0 122 793 2033 0 0 0 0 2277 2277 0 122 915 2034 0 0 0 0 2155 2155 0 122 1037 2035 0 0 0 0 2094 2094 0 61 1098 2036 0 0 0 0 1972 1972 0 122 1220 2037 0 0 0 0 1789 1789 0 183 1403 2038 0 0 0 0 1667 1667 0 122 1525 2039 0 0 0 0 1545 1545 0 122 1647 2040 0 0 0 0 1545 1545 0 0 1647 2041 0 0 0 0 1423 1423 0 122 1769 2042 0 0 0 0 1301 1301 0 122 1891 2043 0 0 0 0 1179 1179 0 122 2013 2044 0 0 0 0 1057 1057 0 122 2135 2045 0 0 0 0 996 996 0 61 2196 2046 0 0 0 0 874 874 0 122 2318 2047 0 0 0 0 752 752 0 122 2440 2048 0 0 0 0 630 630 0 122 2562 2049 0 0 0 0 508 508 0 122 2684 2050 0 0 0 0 386 386 0 122 2806 2051 0 0 0 0 325 325 0 61 2867 2052 0 0 0 0 203 203 0 122 2989 2053 0 0 0 0 81 81 0 122 3111 2054 0 0 0 0 0 0 0 81 3192 Summary:

Total Number Dry Storage Modules in ISFSI 53 Number Dry Storage Modules Purchased Following Shutdown 33 Date Fuel Pool Empty 4/20/2019 Date.ISFSI Empty 2/20/2054

Scenarios 3 & 4 - License Extension, Dry Storage, DOE Repository Opens 2025 Eue I1tD~

'wr& I" f II- P,~1 I 'Cml~'i N I em-")ies im Shipped to DO

)I m~r)Ii~i aS On Site Stoma' From Pool to'g' e p d I , I )

2008 0 10 0 1758 610 2368 0 0 0 2009 152 0 0 1910 610 2520 0 0 0 2010 152 0 0 2062 610 2672 0 0 0 2011 0 10 610 1452 1220 2672 0 0 0 2012 152 0 0 1604 1220 2824 0 0 0 2013 0 0 0 1604 1220 2824 0 0 0 2014 152 0 0 1756 1220 2976 0 0 0 2015 0 0 0 1756 1220 2976 0 0 0 2016 152 0 0 1908 1220 3128 0 0 0 2017 0 0 0 1908 1220 3128 0 0 0 2018 152 0 0 2060 1220 3280 0 0 0 2019 0 11 671 1389 1891 3280 0 0 0 2020 152 0 0 1541 1891 3432 0 0 0 2021 0 0 0 1541 1891 3432 0 0 0 2022 152 0 0 1693 1891 3584 0 0 0 2023 0 0 0 1693 1891 3584 0 0 0 2024 152 0 0 1845 1891 3736 0 0 0 2025 0 0 0 1845 1891 3736 0 0 0 2026 152 0 0 1997 1891 3888 0 . 0 0 2027 0 0 0 1915 1891 3806 82 0 82 2028 152 0 0 1873 1891 3764 194 0 276 2029 0 0 0 1701 1891 3592 172 0 448 2030 152 0 0 1725 1891 3616 128 0 576 2031 0 0 0 1605 1891 3496 120 0 696 2032 152 0 0 1629 1891 3520 128 0 824 2033 0 0 0 1509 1891 3400 120 0 944 2034 368 0 0 1773 1891 3664 104 0 1048 2035 0 0 0 1669 1891 3560 104 0 1152 2036 0 0 0 1541 1891 3432 128 0 1280 2037 0 0 0 1413 1891 3304 128 0 1408 2038 0 15 915 378 2806 3184 120 0 1528 2039 0 6 366 0 3111 3111 12 61 1601 2040 0 0 0 0 3111 3111 0 0 1601 2041 0 0 0 0 2989 2989 0 122 1723 2042 0 0 0 0 2806 2806 0 183 1906 2043 0 0 0 0 2745 2745 0 61 1967 2044 0 0 0 0 2623 2623 0 122 2089 2045 0 0 0 0 2501 2501 0 122 2211 2046 0 0 0 0 2379 2379 0 122 2333 2047 0 0 0 0 2257 2257 0 122 2455 2048 0 0 0 0 2135 2135 0 122 2577 2049 0 0 0 0 2074 2074 0 61 2638 2050 0 0 0 0 1952 1952 0 122 2760 2051 0 0 0 0 1830 1830 0 122 2882 2052 0 0 0 0 1708 1708 0 122 3004 2053 0 0 0 0 1586 1586 0 122 3126 2054 0 0 0 0 1464 1464 0 122 3248 2055 0 0 0 0 1403 1403 0 61 3309 2056 0 0 0 0 1281 1281 0 122 3431 2057 0 0 0 0 1159 1159 0 122 3553 2058 0 0 0 0 1037 1037 0 122 3675 2059 0 0 0 0 915 915 0 122 3797 2060 0 0 0 0 793 793 0 122 3919 2061 0 0 0 0 732 732 0 61 3980 2062 0 0 0 0 610 610 0 122 4102 2063 0 0 0 0 488 488 0 122 *4224 2064 0 0 0 0 366 366 0 122 4346 2065 0 0 0 0 244 244 0 122 4468 2066 0 0 0 0 122 122 0 122 4590 2067 0 0 0 0 0 0 0 122 4712 Summary:

Total Number Dry Storage Modules in ISFSI 52 Number Dry Storage Modules Purchased Following Shutdown 21 Date Fuel Pool Empty 4/20/2039 Date ISFSI Empty 2/20/2067

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Appendix C Detailed Project Schedules

DUANE ARNOLD ENERGY CENTER SCENARIO I DETAILED SCHEDULE Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Storage Class Band C Waste ID ýTa-sk-N-ameL ___._______9q__-L__________L Jw n2i~s h -11I 2 3 4 5 6 7 8 9 1011121314151617J819 0 V22 3 4 526 7 8 930 0 1 2 3 1 Spent Fuel Management 2157.4 wks 06/22/2013 1012212054 2

3 Spent Fuel Shipping to DOE Begins Fuel Shipping Cormplete pentSpent 0 inks 0 wks 02../2027 0221/2054" 02.2112027 02/21/204

. 2/21 2/22 4 I DryrPd 1- Fuel PeelIland"Design ii5wks bg/i2/261 3 /21/2014 5- ry Pd1Begins 0 .06/22/2013 060/221013 /23/

6 i Design Spent Fuel Support System Modificticons 32 wis 07/1 3/2013 02/20120i4 7 esigns~ ControloRelocation 35whs 06/32/2013 02/2012014 8 Design Spent Fuel Storage Security Modifications 250. 08/31/2013 02/2012014 4,2/21 0--- Dry Pd 2 -Spent uFaiCooling and Transfer to Dry Storage 261.2 wks 2/21/2014 02121/2019 2/21

-- 12--] Install Spent Fuel Peol System Me*difications 4 days 02/20/2014 02125/2014 1 IImplement CountrolRoor M* dificaions 48 wks 025/214 1127/I2015 14....implement Spent FoelPoolSecu ty Moditiactons 36 s 0 02014 011201 Purchase of DryStorageModulesforFuelAssemblies f/2 0 subs: 02/0/314 0212/2014 10 SpentFuelPoolEmpty 16 ................................... ...... ..... ....:

.. 4.0 wks ...... 02/21/2019 O21212019 ?1211 7 ro .... .. ..

-.. n...............

DryPd2 nd0

.. wks 02/21/2019 02/21t2019 021 10 Dry PdleanD Sto nrOge iry During Decom.missioning 1 1 0/201/2 340.2 w11.............................ks 902/21/205 254 10 DryPrd3Begins 0 sMs 02/1/2019 0212112019 20 i DryPd-3Eridi- Swim 10/35/2025 10/30/2025 10o/30 21 Dry 4Dr t 1W44t7ek so10/20/2020 07/20/12-002oef II~I~I.I~I 23 0.P4 begirs- 0 ink -10/30/202-5 10/00/-202-5 10130 2- DryPad 4Ends 0 wks Q7[26(2053.07126/2053

-- 2r4 DryP 0- S1iuecommisioning . . .. k 07/20/2053 10/2V'2054 DryPdl5Bogies 0w/k, 07126/2053.07/20/2053 4 ..... Preparaton end NRC.Review ofLicense ..........................................................................................................-.-..--.-..-.-.-......................

termination Plan 30 wkh 0712629/2013 02/1/2014 ~27 VeiainSmyo~nzo~ral Storage Medules 0 who 021/V2054.04/0)2/2054 20 i8- Preparation eif nalReporton Decommissoining andNRCReview 29wk, 04/0400M4.10t22/200 29 CleanDemolition of ISF01 27who 04/0402054 10/08/2054 30 I DyP4 ds0 who-- 100200654 10/32120iý54 .10/21 31 License Ternninatian 670 4wks, 12/29/2012 10/30/2020 32 ~~~~ Uni 1/ ShtonO 200/2014 02104

-i33 l DacanPd 1 -Decmminsioning planning Prier/a Shutdown 6'0vkn 12/.20/.112012...... 21.2-1210 ..I 1 De.e.I'd 1 Sa~g/no 0 who, 121292 00012.1 20.12 012 2/21 35 Prepare WWI-eNotificatnin n/ CessationoftOperations Owks. 02J0112014 02/01/2014 30 ¶ PrepareWritten Notflcaon /Pe Rmoa ro ese Owks 021/01/120 14.0 2/1 0201 4 377-i Do.nm..s.nie.g Planning and Design 17

,7. whs

-.. 1 092012 1 3(

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7 35 wks 06/22/2033 02120/2034 2/23

... 25....-v'i-ks 06/31/2033"

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48days.212/23 4 W-kys

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......................... "' ( -"'( 2 3 Spent Fuel Pool Em pty 0 Wks i: 02/21/2039 02/21/2039 r d s

.................... 0 ki 2 3 22* 9 17 Dry Pd 3 -Dry Storage During Decommissioni.ng.

15 ........... ............ 0 .12....i..03.

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- y 5 .r.P.5.ei............s...

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.Preparation and NRC Review of License Termination Plan 300d, who k who07/28/2066.02/23/2067 7/2/266.. 07/2/205 26 ...............................

6 who ' 02/23/2067 04/03/2057 27 Verification Survey of Horizontal Storage Modules Preparation of Final Report on Decommissioning and NRC Review 25 29 wks 04/06/2067 10/23/2067

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.Prepare Work Sequence and Schedule for Decomrmissioning Integrated 11 wh 12/29/2032 39 I.......... e m i T gActivity Pirepare-Decommissioning ,ai*T ** ] i* * . ... .................

Specifications 60 Wks 12/29/2032 02/19/2034 Prepare License Termination Plan 24 who 12/29/2032 0. 212033 41 Prepare Detailed Work Procedures for Decommissioning 60 wks 12/25/2032 02/16/2034 Prelparatonf Decommissioning License Documents 43 ........

D e i ttninga Pla-nn nContaimrent

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' '* i 04/27/2033 i i 2"* "" '512/25/2033 5' who 04/27/2033.0ý423

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DUANE ARNOLD ENERGY CENTER SCENARIO 3 DETAILED SCHEDULE Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025

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49 Task Name Deaon Pd 2 Begins Duration V WKS I t..

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DUANE ARNOLD ENERGY CENTER SCENARIO 3 DETAILED SCHEDULE Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Name ID4 TaskTsName 3DurtionL~tol L....flish~....-i u1,t~ [T1~~] ~ [J.Z.L8 ~L1 (112134 i~l. Il E H90021 !221231241512612712812913013113!3~~~tII~uiozs Decon Off-Gas Stack h4 wks 0911512039 10/13/2039 Decion and-Rmov ard Structures aid Tanks

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DUANE ARNOLD ENERGY CENTER SCENARIO 4 DETAILED SCHEDULE SAFSTOR, License Extension, Yucca Mountain Opening 2025

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DUANE ARNOLD ENERGY CENTER SCENARIO 4 DETAILED SCHEDULE SAFSTOR, License Extension, Yucca Mountain Opening 2025 So Dration }.

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Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Appendix D Detailed Cost Tables

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total A. License TerminationI Decon Pd 1 Decommissioning Planning Prior to Shutdown Distributed 1.01 Prepare Written Notification of Cessation of Operations $0 $0 $0 $0 $0 $0 1.02 Prepare Written Notification of Fuel Removal from Vessel $0 $0 $0 $0 $0 $0 1.03 Decommissioning Planning and Design $236 $0 $0 $0 $31 $267 1.04 Prepare Integrated Work Sequence and Schedule for Decommissioning $137 $0 $0 $0 $18 $155 1.05 Prepare Decommissioning Activity Specifications $2,486 $20 $0 $0 $326 $2,832 1.06 Prepare License Termination Plan $317 $10 $0 $0 $42 $369 1.07 Prepare Detailed Work Procedures for Decommissioning $2,259 $8 $0 $0 $295 $2,561 1.08 Preparation of Decommissioning License Documents $1,661 $7 $0 $0 $217 $1,885 1.09 Planning and Design of Site Repowering $579 $7 $0 $0 $76 $662 1.10 Design Containment Access Modifications $221 $3 $0 $0 $29 $253 1.11 Planning and Design of Primary System Decontamination $202 $2 $0 $0 $26 $230 1.12 Select Decommissioning General Contractor $251 $4 $0 $0 $33 $289 Distributed Subtotal $8,349 $61 $0 $0 $1,093 $9,503 Undistributed 1.01 Utility Staff $2,480 $0 $0 $0 $322 $2,802 1.10 Decommissioning General Contractor Staff $1,929 $0 $0 $0 $251 $2,179 Undistributed Subtotal $4,409 $0 $0 $0 $573 $4,981 Decon Pd 1 Subtotal $12,758 $61 $0 $0 $1,666 $14,484 Printed: 1/11/2010 12:39:31 PM Page I off880 Pg

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Decon Pd 2 Site Modifications and Preparations Distributed 2.01 Administrative Activities $757 $4 $0 $0 $99 $860 2.02 Planning for Asbestos Abatement $132 $2 $0 $0 $17 $152 2.03 Design Interim Storage Facility for Greater than Class A Waste $487 $9 $0 $476 $126 $1,099 2.04 Planning and Design of Site Characterization $311 $3 $0 $0 $41 $356 2.05 Perform Baseline Radiation Survey $233 $88 $0 $0 $42 $363 2.06 Perform Primary System Decontamination and Place Waste in Interim Storage $848 $805 $77 $0 $398 $2,129 2.07 Flush and Drain Non-Essential Systems and Place Waste in Interim Storage $35 $6 $29 $0 $16 $86 2.08 Perform Hot Spot Removal and Place Waste in Interim Storage $545 $176 $43 $0 $176 $941 2.09 Finalize Residual Radiation Inventory $37 $41 $0 $0 $10 $88 2.10 Select Shipping Casks and Obtain Shipping Permits $29 $0 $0 $0 $4 $33 2.11 Design, Specify, and Procure Special Items and Materials $782 $5,300 $0 $0 $791 $6,873 2.12 Modify Containment Access $300 $554 $0 $0 $111 $965 2.13 Construct New Change Rooms, Hot Laundry, In-Plant Laydown Areas $0 $869 $0 $0 $1 13 $982 2.14 Repower Site $524 $1,578 $0 $0 $273 $2,376 2.15 Test Special Cutting and Handling Equipment and Train Operators $882 $145 $0 $0 $134 $1,161 2.16 Procure Non-Engineered Standard Equipment $0 $4,444 $0 $0 $578 $5,022 2.17 Asbestos Abatement $145 $57 $196 $0 $92 $490 2.18 Construct Interim Storage Facility for Greater than Class A Waste $27 $1,527 .$0 $0 $202 $1,756 Distributed Subtotal $6,074 $15,608 $345 $476 $3,223 $25,732 Undistributed 1.01 Utility Staff $33,730 $0 $0 $0 $4,385 $38,115 1.02 Utility Staff HP Supplies $0 $1,163 $0 $0 $174 $1,337 1.03 Security Guard Force $2,580 $0 $0 $0 $387 $2,967 1.04 Insurance $0 $0 $0 $1,236 $185 $1,422 Printed: 1/1 1/20 10 12:39:32 PM Page 2 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.05 Property Taxes $0 $0 $0 $20 $3 $23 1.06 NRC Decommissioning Fees $0 $0 $0 $768 $115 $883 1.07 Materials and Services $0 $10,412 $0 $0 $1,562 $11,974 1.08 DAW Disposal $0 $0 $45 $0 $7 $52 1.09 Energy $0 $0 $0 $1,001 $150 $1,151 1.10 Decommissioning General Contractor Staff $21,089 $0 $0 $0 $2,742 $23,831 1.11 DGC HP Supplies $0 $994 $0 $0 $149 $1,143 Undistributed Subtotal $57,399 $12,569 $45 $3,025 $9,859 $82,898 Decon Pd 2 Subtotal $63,473 $28,177 $390 $3,501 $13,082 $108,630 Printed: 1/11/2010 12:39:32 PM Page 3 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Decon Pd 3 Major Component Removal Distributed 3.01 Remove, Package and Dispose of Non-Essential Systems $10,049 $2,322 $7,230 $0 $4,508 $24,109 3.02 Segment, Package and Dispose of Nuclear Steam Supply System $2,343 $923 $29,805 $0 $7,606 $40,677 3.03 Decon Shield Plugs, Pool Plugs and Stud Tensioners $37 $7 $142 $0 $43 $229 3.04 Volume Reduce Control Rods Blades and LPRMS and Place Waste in Interim Storage $533 $330 $903 $0 $406 $2,173 3.05 Purchase Dry Storage Modules for GTCC Waste $0 $1,096 $0 $0 $252 $1,348 3.06 Finalize Internals and Vessel Segmenting Details $18 $0 $0 $0 $4 $22 3.07 Reactor Vessel Insulation Removal and Disposal $104 $15 $214 $0 $109 $441 3.08 Segment, Package and Place Reactor Internals in Interm Storage $3,080 $1,018 $1,717 $0 $2,203 $8,018 3.09 Package and Dispose of Reactor Pressure Vessel $2,922 $1,073 $6,513 $0 $3,336 $13,843 3.10 Drain Dryer Separator Pool and Process Liquid Waste $0 $0 $0 $0 $0 $0 3.11 Removal and Disposal of Sacrificial Shield Wall and Reactor Pedestal $219 $447 $830 $0 $344 $1,840 3.12 Remove and Dispose of Hazardous Waste $0 $0 $0 $131 $20 $151 Distributed Subtotal $19,305 $7,231 $47,354 $131 $18,831 $92,851 Undistributed 1.01 Utility Staff $47,010 $0 $0 $0 $6,111 $53,121 1.02 Utility Staff HP Supplies $0 $1,784 $0 $0 $268 $2,052 1.03 Security Guard Force $4,186 $0 $0 $0 $628 $4,813 1.04 Insurance $0 $0 $0 $2,006 $301 $2,306 1.05 Property Taxes $o $0 $o $33 $5 $37 1.06 NRC Decommissioning Fees $0 $0 $0 $2,051 $308 $2,359 1.07 Materials and Services $0 $14,145 $0 $0 $2,122 $16,267 1.08 DAW Disposal $0 $0 $213 $0 $32 $244 1.09 Energy $0 $0 $0 $1,953 $293 $2,246 1.10 Decommissioning General Contractor Staff $46,118 $0 $0 $0 $5,995 $52,113 Printed: 1/11/2010 12:39:32 PM Page 4 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.11 DGC HP Supplies $0 $2,470 $0 $0 $370 $2,840 Undistributed Subtotal $97,314 $18,399 $213 $6,043 $16,433 $138,398 Decon Pd 3 Subtotal $116,619 $25,630 $47,567 $6,174 $35,264 $231,249 Printed: 1/11/2010 12:39:32 PM Page 5 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number I License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Decon Pd 4 Balance of Plant Decontamination Distributed 4.01 Remove and Dispose of Spent Fuel Storage Racks $51 $234 $1,451 $0 $399 $2,136 4.02 Drain Spent Fuel Pool and Process Liquid Waste $0 $0 $0 $0 $0 $0 4.03 Flush and Drain Essential Systems Following Fuel Pool Closure and Place Waste in In $24 $10 $29 $0 $15 $78 4.04 Removal and Interim Storage of Spent Resins, Filter Media and Tank Sludge $25 $25 $72 $0 $28 $151 4.05 Removal and Disposal of Off Gas System Adsorber $25 $25 $2,429 $0 $570 $3,049 4.06 Segment, Package and Dispose of Refueling Bridge $50 $9 $262 $0 $74 $395 4.07 Segment, Package and Dispose of Spent Fuel Pool Island Equipment $7 $1 $135 $0 $33 $176 4.08 Remove, Package and Dispose of Remaining Active Plant Systems $3,210 $1,032 $1,407 $0 $1,299 $6,948 4.09 Decon Reactor Building $2,761 $2,213 $4,493 $0 $2,177 $11,644 4.10 Decon Turbine Building $541 $768 $530 $0 $423 $2,262 4.11 Decon Radwaste Building $116 $144 $169 $0 $99 $528 4.12 Decon HPCI and RCIC Building $26 $39 $25 $0 $21 $110 4.13 Decon Administration Building $9 $5 $10 $0 $6 $30 4.14 Decon Off-Gas Retention Building $44 $17 $21 $0 $19 $100 4.15 Decon Low Level Radwaste Storage and Processing $208 $312 $255 $0 $178 $954 4.16 Decon Off-Gas Stack $52 $48 $142 $0 $56 $298 4.17 Segment, Package and Dispose of Contaminated Decon Equipment and Tooling $22 $4 $131 $0 $36 $194 4.18 Remove Underground Storm Drains and Manholes $33 $25 $34 $0 $21 $114 4.19 Final Status Survey for Structures $5,188 $928 $0 $921 $1,545 $8,583 4.20 Final Status Survey for Land Areas $915 $54 $0 $0 $223 $1,191 4.21 Prepare Final Report of Dismantling Program $65 $3 $0 $0 $16 $83 Distributed Subtotal $13,372 $5,896 $11,595 $921 $7,238 $39,024 Undistributed 1.01 Utility Staff $20,540 $0 $0 $0 $2,670 $23,210 Printed: 1/ 11/2010 12:3 9:3 2 PM Page 6 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.02 Utility Staff HiP Supplies $0 $1,359 $0 $0 $204 $1,563 1.03 Security Guard Force $2,369 $0 $0 $0 $355 $2,725 1.04 Insurance $0 $0 $0 $1,135 $170 $1,305 1.05 Property Taxes $0 $0 $0 $18 $3 $21 1.06 NRC Decommissioning Fees $0 $0 $0 $1,161 $174 $1,335 1.07 Materials and Services $0 $6,632 $0 $0 $995 $7,627 1.08 DAW Disposal $0 $0 $160 $0 $24 $184 1.09 Energy $0 $0 $0 $965 $145 $1,110 1.10 Decommissioning General Contractor Staff $18,301 $0 $0 $0 $2,379 $20,680 1.11 DGC HP Supplies $0 $777 $0 $0 $117 $894 Undistributed Subtotal $41,210 $8,768 $160 $3,279 $7,236 $60,654 Decon Pd 4 Subtotal $54,582 $14,664 $11,755 $4,200 $14,474 $99,678 Printed: 1/11/2010 12:39:32 PM Page 7 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Decon Pd 5 Interim Waste Storage Facility Operation Distributed 5.01 Transport and Dispose of Greater Than Class A Waste in Interim Storage $153 $664 $30,849 $0 $7,283 $38,948 5.02 License Termination for Interim Waste Storage Facility $141 $18 $0 $250 $53 $462 5.03 Clean Demolition of Interim Waste Storage Facility $79 $41 $171 $0 $42 $333 Distributed Subtotal $373 $723 $31,020 $250 $7,378 $39,743 Undistributed 1.01 Utility Staff $563 $0 $0 $0 $73 $636 1.02 Utility Staff HiP Supplies $0 $86 $0 $0 $13 $99 1.03 Security Guard Force $345 $0 $0 $0 $52 $397 1.04 Insurance $0 $0 $0 $1,985 $298 $2,283 1.05 Property Taxes $0 $0 $0 $32 $5 $37 1.06 NRC Decommissioning Fees $0 $0 $0 $1,233 $185 $1,418 1.07 Materials and Services $0 $261 $0 $0 $39 $300 1.08 DAW Disposal $0 $0 $3 $0 $0 $4 1.09 Energy $0 $0 $0 $38 $6 $44 Undistributed Subtotal $908 $347 $3 $3,288 $671 $5,218 Decon Pd 5 Subtotal $1,281 $1,070 $31,023 $3,538 $8,049 $44,961 Printed: 1/11/2010 12:39:32 PM Page 8 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total A. License Termination Subtotal $248,713 $69,602 $90,735 $17,413 $72,535 $499,002 B. Spent Fuel Dry Pd 1 Fuel Pool Island Design Distributed 6.01 Design Spent Fuel Support System Modifications $370 $6 $0 $0 $49 $425 6.02 Design Control Room Relocation $358 $5 $0 $0 $47 $411 6.03 Design Spent Fuel Storage Security Modifications $275 $4 $0 $0 $36 $315 Distributed Subtotal $1,003 $15 $0 $0 $132 $1,151 Undistributed 2.01 Utility Spent Fuel Staff $93 $0 $0 $0 $12 $106 Undistributed Subtotal $93 $0 $0 $0 $12 $106 Dry Pd 1 Subtotal $1,096 $15 $0 $0 $144 $1,257 Printed: 1/11/2010 12:39:32 PM Page 9 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 2 Spent Fuel Cooling and Transfer to Dry Storage Distributed 7.01 Install Spent Fuel Pool System Modifications $119 $1,658 $0 $0 $231 $2,008 7.02 Implement Control Room Modifications $956 $1,434 $0 $0 $311 $2,701 7.03 Implement Spent Fuel Pool Security Modifications $500 $750 $0 $0 $163 $1,413 7.04 Purchase of Dry Storage Modules for Fuel Assemblies $0 $36,162 $0 $0 $5,424 $41,586 Distributed Subtotal $i,575 $40,004 $0 $0 $6,129 $47,708 Undistributed 2.01 Utility Spent Fuel Staff $2,050 $0 $0 $0 $267 $2,317 2.02 Utility Staff HP Supplies $0 $791 $0 $0 $119 $910 2.03 Fuel Pool Maintenance and Operation Staff $15,545 $0 $0 $0 $2,332 $17,877 2.05 Security Guard Force $26,7T4 $0 $0 $0 $4,018 $30,801 2.06 Insurance $0 $0 $0 $4,241 $636 $4,877 2.07 Spent Fuel Fees and Permits $0 $0 $0 $6,376 $956 $7,332 2.08 Energy $0 $0 $0 $1,433 $215 $1,648 2.09 Materials and Services $0 $13,131 $0 $0 $1,970 $15,101 2.10 Spent Fuel Maintenance $0 $0 $0 $1,000 $150 $1,150 Undistributed Subtotal $44,379 $13,922 $0 $13,050 $10,663 $82,013 Dry Pd 2 Subtotal $45,954 $53,926 $0 $13,050 $16,792 $129,721 Printed: 1/11/2010 12:39:32 PM Page 10 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 3 Dry Storage During Decommissioning Undistributed 2.01 Utility Spent Fuel Staff $8,148 $0 $0 $0 $1,059 $9,208 2.02 Utility Staff HP Supplies $0 $636 $0 $0 $95 $732 2.04 Additional Staff for Spent Fuel Shipping $1,573 $0 $0 $0 $236 $1,809 2.05 Security Guard Force $3,583 $0 $0 $0 $538 $4,121 2.06 Insurance $0 $0 $0 $1,277 $192 $1,469 2.07 Spent Fuel Fees and Permits $0 $0 $0 $3,005 $451 $3,456 2.08 Energy $0 $0 $0 $22 $3 $25 2.09 Materials and Services $0 $4,121 $0 $0 $618 $4,739 2.10 Spent Fuel Maintenance $0 $0 $0 $502 $75 $577 Undistributed Subtotal $13,304 $4,757 , $0 $4,806 $3,267 $26,136 Dry Pd 3 Subtotal $13,304 $4,757 $0 $4,806 $3,267 $26,136 Printed: 1/11/2010 12:39:32 PM Page I11 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 4 Dry Storage Only Undistributed 2.01 Utility Spent Fuel Staff $33,791 $0 $0 $0 $4,393 $38,183 2.02 Utility Staff UP Supplies $0 $2,639 $0 $0 $396 $3,035 2.04 Additional Staff for Spent Fuel Shipping $6,524 $0 $0 $0 $979 $7,503 2.05 Security Guard Force $14,860 $0 $0 $0 $2,229 $17,089 2.06 Insurance $0 $0 $0 $8,764 $1,315 $10,079 2.07 Spent Fuel Fees and Permits $0 $0 $0 $12,461 $1,869 $14,330 2.08 Energy $0 $0 $0 $1,088 $163 $1,251 2.09 Materials and Services $0 $17,089 $0 $0 $2,563 $19,653 2.10 Spent Fuel Maintenance $0 $0 $0 $2,080 $312 $2,392 2.11 Property Taxes $0 $0 $0 $277 $42 $319 Undistributed Subtotal $55.175 $19.728 $0 $24.670 $14,261 $113,834 Dry Pd 4 Subtotal $55,175 $19,728 $0 $24,670 $14,261 $113,834 Printed: 1/11/2010 12:39:32 PM Page 12 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 5 ISFSI Decommissioning Distributed 10.01 Preparation and NRC Review of License Termination Plan $63 $0 $0 $101 $21 $186 10.02 Verification Survey of Horizontal Storage Modules $74 $27 $0 $0 $13 $115 10.03 Preparation of Final Report on Decommissioning and NRC Review $31 $0 $0 $60 $12 $102 10.04 Clean Demolition ofISFSI $1,215 $662 $1,875 $0 $554 $4,305 Distributed Subtotal $1,383 $689 $1,875 $161 $600 $4,708 Undistributed 2.01 Utility Spent Fuel Staff $687 $0 $0 $0 $89 $776 2.05 Security Guard Force $664 $0 $0 $0 $100 $764 2.06 Insurance $0 $0 $0 $155 $23 $178 2.08 Energy $0 $0 $0 $5 $1 $5 2.09 Materials and Services $0 $380 $0 $0 $57 $437 2.11 Property Taxes $0 $0 $0 $12 $2 $14 2.12 Decommissioning General Contractor Staff $409 $0 $0 $0 $61 $470 Undistributed Subtotal $1,760 $380 $0 $172 $333 $2,644 Dry Pd 5 Subtotal $3,143 $1,069 $1,875 $333 $933 $7,352 Printed: 1/11/2010 12:39:32 PM Page 13 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025;, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/2 1/20 14 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total B. Spent Fuel Subtotal $118,672 $79,495 $1,875 $42,859 $35,397 $278,300 C. Greenfield Grn Pd 1 Clean Building Demolition Distributed 11.01 Clean Building Demolition Equipment $0 $738 $0 $0 $170 $907 11.02 Install Temporary Office Buildings $14 $63 $0 $0 $16 $93 11.03 Demolish Low-Level Radwaste Building $2,288 $1,129 $204 $0 $584 $4,204 11.04 Demolish Turbine Building $2,607 $1,258 $151 $0 $648 $4,664 11.05 Demolish Data Acquisition and Technical Support Building $214 $142 $50 $0 $67 $472 11.06 Demolish Control and Administrative Buildings $571 $260 $58 $0 $142 $1,031 11.07 Demolish Guard Facility $91 $42 $8 $0 $22 $163 11.08 Demolish HPCI and RCtC Building $120 $135 $6 $0 $48 $309 11.09 Demolish Reactor Building $3,298 $1,836 $295 $0 $890 $6,319 11.10 Demolish Cooling Towers and Related Structures $533 $696 $185 $0 $253 $1,667 11.11 Demolish Training Center $97 $42 $10 $0 $23 $172 11.12 Demolish Plant Support Center $222 $159 $59 $0 $73 $514 11.13 Remove and Dispose of Underground Storage Tanks $18 $22 $0 $0 $7 $48 11.14 Demolish Off-Gas Stack $85 $45 $18 $0 $24 $172 11.15 Demolish Existing Waste Water Treatment Plant $13 $1 $3 $0 $2 $20 11.16 Demolish Remaining Structures $1,524 $2,042 $496 $0 $732 $4,794 Distributed Subtotal $11,695 $8,610 $1,543 $0 $3,701 $25,549 Undistributed 3.01 Utility Staff $3,765 $0 $0 $0 $489 $4,255 3.02 Security Guard Force $606 $0 $0 $0 $91 $697 3.03 Decommissioning General Contractor Staff $6,313 $0 $0 $0 $821 $7,133 3.04 Energy $0 $0 $0 $244 $37 $281 Printed: 1/11/2010 12:39:32 PM Page 14 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 3.05 Insurance $0 $0 $0 $141 $21 $163 Undistributed Subtotal $10,684 $0 $0 $385 $1,459 $12,529 Grn Pd 1 Subtotal $22,379 $8,610 $1,543 $385 $5,160 $38,078 Printed: 1/11/2010 12:39:32 PM Page 15 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Grn Pd 2 Site Restoration Distributed 12.01 Site Restoration Equipment $0 $103 $0 $0 $24 $127 12.02 Remove Temporary Structures $11 $9 $0 $0 $3 $23 12.03 Finish Grading and Re-Vegetate Site $376 $272 $0 $0 $111 $760 Distributed Subtotal $387 $384 $0 $0 $138 $910 Undistributed 3.01 Utility Staff $496 $0 $0 $0 $64 $560 3.02 Security Guard Force $123 $0 $0 $0 $18 $142 3.03 Decommissioning General Contractor Staff $890 $0 $0 $0 $116 $1,006 3.04 Energy $0 $0 $0 $2 $0 $2 3.05 Insurance $0 $0 $0 $29 $4 $33 Undistributed Subtotal $1,509 $0 $0 $31 $202 $1,743 Grn Pd 2 Subtotal $1,896 $384 $0 $31 $340 $2,653 Printed: 1/11/2010 12:39:32 PM Page 16 of 80

Table 1 Duane Arnold Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 1 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total C. Greenfield Subtotal $24,275 $8,994 $1,543 $416 $5,500 $40,731 Scenario No. 1 Total $391,660 $158,091 $94,153 $60,688 $113,432 $818,033 Printed: 1/11/2010 12:39:32 PM Page 17 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total A. License Termination SAFSTOR Pd 1 SAFSTOR Planning Prior to Shutdown Distributed 1.01 Prepare Written Notification of Cessation of Operations $0 $0 $0 $0 $0 $0 1.02 Prepare Written Notification of Fuel Removal from Vessel $0 $0 $0 $0 $0 $0 1.03 SAFSTOR Planning and Design $236 $0 $0 $0 $31 $267 1.04 Planning for SAFSTOR Baseline Radiation Survey $311 $3 $0 $0 $41 $356 1.05 Prepare SAFSTOR Plan $1,881 $32 $0 $0 $249 $2,162 1.06 Preparation of SAFSTOR License Documents $1,661 $7 $0 $0 $217 $1,885 1.07 Prepare SAFSTOR Integrated Work Schedule $79 $4 $0 $0 $11 $93 1.08 Prepare SAFSTOR Activity Specifications $588 $5 $0 $0 $77 $670 1.09 Adminstrative Activities in Preparation for SAFSTOR $149 $0 $0 $0 $19 $169 1.10 Prepare Detailed SAFSTOR Work Procedures $1,158 $8 $0 $0 $152 $1,317 1.11 Planning for Asbestos Abatement $132 $2 $0 $0 $17 $152 1.12 Select SAFSTOR General Contractor $251 $4 $0 $0 $33 $289 1.13 Planning and Design of Primary System Decontamination $202 $2 $0 $0 $26 $230 Distributed Subtotal $6,648 $67 $0 $0 $873 $7,590 Undistributed 1.01 Utility Staff $2,480 $0 $0 $0 $322 $2,802 1.10 Decommissioning General Contractor Staff $1,929 $0 $0 $0 $251 $2,179 Undistributed Subtotal $4.409 $0 $0 $0 $573 $4.981 SAFSTOR Pd 1 Subtotal $11,057 $67 $0 $0 $1,446 $12,571 Printed: 1/11/2010 12:39:32 PM Page 18 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 2 SAFSTOR Preparations Following Shutdown Distributed 2.01 Procure Non-Engineered Standard Equipment For SAFSTOR Preparations $0 $3,417 $0 $0 $444 $3,862 2.02 Perform Primary System Decontamination and Place Waste in Interim Storage $848 $805 $77 $0 $398 $2,129 2.03 Flush, Drain and De-Energize Non-Essential Systems $35 $6 $29 $0 $16 $86 2.04 Drain and Process Suppression Pool Water and Hydrolase Torus Walls $0 $0 $0 $0 $0 $0 2.05 Drain and Process Dryer Storage Pool Water and Hydrolase Dryer Storage Pool $0 $0 $0 $0 $0 $0 2.06 General Area Cleanup $1,146 $478 $165 $0 $411 $2,200 2.07 Asbestos Abatement $145 $57 $196 $0 $92 $490 2.08 Remove and Dispose of Hazardous Waste $0 $0 $0 $131 $20 $151 2.09 Prepare SAFSTOR Report $46 $0 $0 $0 $6 $52 Distributed Subtotal $2,220 $4,763 $467 $131 $1,387 $8,970 Undistributed 1.01 Utility Staff $16,888 $0 $0 $0 $2,195 $19,083 1.02 Utility Staff HiP Supplies $0 $582 $0 $0 $87 $669 1.03 Security Guard Force $1,292 $0 $0 $0 $194 $1,486 1.04 Insurance $0 $0 $0 $619 $93 $712 1.05 Property Taxes $0 $0 $0 $10 $2 $12 1.06 NRC Decommissioning Fees $0 $0 $0 $384 $58 $442 1.07 Materials and Services $0 $5,213 $0 $0 $782 $5,995 1.08 DAW Disposal $0 $0 $28 $0 $4 $32 1.09 Energy $0 $0 $0 $501 $75 $576 1.10 Decommissioning General Contractor Staff $10,559 $0 $0 $0 $1,373 $11,932 1.11 DGC HP Supplies $0 $497 $0 $0 $75 $572 Undistributed Subtotal $28,739 $6,292 $28 $1,514 $4,938 $41,511 Printed: 1/11/2010 12:39:32 PM Page 19 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 2 Subtotal $30,959 $11,055 $495 $1,645 $6,325 $50,481 Printed: 1/11/2010 12:39:33 PM Page 20 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 3 SAFSTOR Preparation Delay During Spent Fuel Pool Operations Undistributed 1.01 Utility Staff $697 $0 $0 $0 $91 $787 1.02 Utility Staff UiP Supplies $0 $107 $0 $0 $16 $123 1.03 Security Guard Force $428 $0 $0 $0 $64 $492 1.04 Insurance $0 $0 $0 $2,459 $369 $2,828 1.05 Property Taxes $0 $0 $0 $40 $6 $46 1.06 NRC Decommissioning Fees $0 $0 $0 $835 $125 $961 1.07 Materials and Services $0 $324 $0 $0 $49 $372 1.09 Energy $0 $0 $0 $888 $133 $1,022 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $449 $67 $516 Undistributed Subtotal $1,125 $431 $0 $4,671 $920 $7,147 SAFSTOR Pd 3 Subtotal $1,125 $431 $0 $4,671 $920 $7,147 Printed: 1/11/2010 12:39:33 PM Page 21 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 4 Completion of SAFSTOR Preparations Distributed 4.01 Volume Reduce Control Rods Blades and LPRMS and Place Waste in Interim Storage $533 $330 $903 $0 $406 $2,173 4.02 Drain Spent Fuel Pool and Process Liquid Waste $0 $0 $0 $0 $0 $0 4.03 Flush and Drain Essential Systems Following Fuel Pool Closure $24 $10 $29 $0 $15 $78 4.04 Removal and Interim Storage of Spent Resins, Filter Media and Tank Sludge $25 $25 $72 $0 $28 $151 4.05 Removal and Disposal of Off Gas System Adsorber $25 $25 $2,429 $0 $570 $3,049 4.06 Segment, Package and Dispose of Spent Fuel Pool Island Equipment $7 $1 $135 $0 $33 $176 4.07 Secure Site for Dormancy Period $0 $0 $0 $1,500 $195 $1,695 Distributed Subtotal $614 $391 $3,568 $1,500 $1,247 $7,322 Undistributed 1.01 Utility Staff $2,261 $0 $0 $0 $294 $2,555 1.02 Utility Staff HP Supplies $0 $130 $0 $0 $20 $150 1.03 Security Guard Force $442 $0 $0 $0 $66 $508 1.04 Insurance $0 $0 $0 $508 $76 $584 1.05 Property Taxes $0 $0 $0 $8 $1 $9 1.06 NRC Decommissioning Fees $0 $0 $0 $315 $47 $363 1.07 Materials and Services $0 $742 $0 $0 $111 $853 1.08 DAW Disposal $0 $0 $9 $0 $1 $10 1.09 Energy $0 $0 $0 $317 $48 $364 1.11 DGC HP Supplies $0 $96 $0 $0 $14 $110 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $93 $14 $107 Undistributed Subtotal $2,703 $968 $9 $1,241 $692 $5,613 SAFSTOR Pd 4 Subtotal $3,317 $1,359 $3,577 $2,741 $1,939 $12,935 Printed: 1/11/2010 12:39:33 PM Page 22 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 5 Dormancy With Interim Waste and Dry Spent Fuel Storage Distributed 5.01 Transport and Dispose of Greater Than Class A Waste in Interim Storage $85 $371 $9,019 $0 $2,179 $11,655 Distributed Subtotal $85 $371 $9,019 $0 $2,179 $11,655 Undistributed 1.01 Utility Staff $923 $0 $0 $0 $120 $1,043 1.02 Utility Staff HP Supplies $0 $141 $0 $0 $21 $162 1.03 Security Guard Force $566 $0 $0 $0 $85 $651 1.04 Insurance $0 $0 $0 $3,257 $489 $3,746 1.05 Property Taxes $0 $0 $0 $53 $8 $61 1.06 NRC Decommissioning Fees $0 $0 $0 $1,106 $166 $1,272 1.07 Materials and Services $0 $429 $0 $0 $64 $493 1.08 DAW Disposal $0 $0 $1 $0 $0 $1 1.09 Energy $0 $0 $0 $257 $39 $295 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $595 $89 $684 Undistributed Subtotal $1,489 $570 $1 $5,268 $1,081 $8,408 SAFSTOR Pd 5 Subtotal $1,574 $941 $9,020 $5,268 $3,260 $20,063 Printed: 1/11/2010 12:39:33 PM Page 23 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 6 Dormancy With Dry Storage Distributed 6.01 Bituminous Roof Replacement $259 $89 $38 $0 $58 $444 Distributed Subtotal $259 $89 $38 $0 $58 $444 Undistributed 1.01 Utility Staff $5,160 $0 $0 $0 $671 $5,830 1.02 Utility Staff HP Supplies $0 $790 $0 $0 $118 $908 1.03 Security Guard Force $3,167 $0 $0 $0 $475 $3,642 1.04 Insurance $0 $0 $0 $14,514 $2,177 $16,691 1.05 Property Taxes $0 $0 $0 $296 $44 $340 1.06 NRC Decommissioning Fees $0 $0 $0 $6,185 $928 $7,112 1.07 Materials and Services $0 $2,396 $0 $0 $359 $2,755 1.09 Energy $0 $0 $0 $1,084 $163 $1,247 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $3,325 $499 $3,824 Undistributed Subtotal $8.327 $3,186 $0 $25.404 $5.434 $42.349 SAFSTOR Pd 6 Subtotal $8,586 $3,275 $38 $25,404 $5,492 $42,793 Printed: 1/11/2010 12:39:33 PM Page 24 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Dale: 111/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 7 Dormancy Only Distributed 7.01 Bituminous Roof Replacement $259 $89 $38 $0 $58 $444 Distributed Subtotal $259 $89 $38 $0 $58 $444 Undistributed 1.01 Utility Staff $2,478 $0 $0 $0 $322 $2,800 1.02 Utility Staff HP Supplies $0 $310 $0 $0 $47 $357 1.03 Security Guard Force $6,219 $0 $0 $0 $933 $7,152 1.04 Insurance $0 $0 $0 $5,701 $855 $6,556 1.05 Property Taxes $0 $0 $0 $116 $17 $134 1.06 NRC Decommissioning Fees $0 $0 $0 $2,429 $364 $2,794 1.07 Materials and Services $0 $2,635 $0 $0 $395 $3,030 1.09 Energy $0 $0 $0 $426 $64 $490 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $2,612 $392 $3,004 Undistributed Subtotal $8,697 $2,945 $0 $11,284 $3,389 $26,317 SAFSTOR Pd 7 Subtotal $8,956 $3,034 $38 $11,284 $3,447 $26,761 Printed: 1/11/2010 12:39:33 PM Page 25 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 8 Decommissioning Planning During Dormancy Distributed 8.01 Decommissioning Planning and Design $236 $0 $0 $0 $31 $267 8.02 Planning and Design of Site Characterization $311 $3 $0 $0 $41 $356 8.03 Prepare Integrated Work Sequence and Schedule for Decommissioning $137 $0 $0 $0 $18 $155 8.04 Prepare Decommissioning Activity Specifications $2,486 $20 $0 $0 $326 $2,832 8.05 Prepare License Termination Plan $317 $10 $0 $0 $42 $369 8.06 Prepare Detailed Work Procedures for Decommissioning $2,259 $8 $0 $0 $295 $2,561 8.07 Preparation of Decommissioning License Documents $1,661 $7 $0 $0 $217 $1,885 8.08 Planning and Design of Site Revitilization $915 $14 $0 $0 $121 $1,051 8.09 Administrative Activities $757 $4 $0 $0 $99 $860 8.10 Design Containment Access Modifications $221 $3 $0 $0 $29 $253 8.11 Select Decommissioning General Contractor $251 $4 $0 $0 $33 $289 Distributed Subtotal $9,551 $73 $0 $0 $1,252 $10,878 Undistributed 1.01 Utility Staff $3,729 $0 $0 $0 $485 $4,214 1.02 Utility Staff UP Supplies $0 $101 $0 $0 $15 $116 1.04 Insurance $0 $0 $0 $1,063 $159 $1,222 1.05 Property Taxes $0 $0 $0 $17 $3 $20 1.06 NRC Decommissioning Fees $0 $0 $0 $361 $54 $415 1.07 Materials and Services $0 $1,244 $o $0 $187 $1,431 1.09 Energy $0 $0 $0 $63 $9 $73 1.10 Decommissioning General Contractor Staff $1,929 $0 $0 $0 $251 $2,179 1.11 DGC HP Supplies $0 $128 $0 $o $19 $147 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $388 $58 $446 Printed: 1/11/2010 12:39:33 PM Page 26 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Undistributed Subtotal $5,658 $1,473 $0 $1,892 $1,240 $10,263 SAFSTOR Pd 8 Subtotal $15,209 $1,546 $0 $1,892 $2,492 $21,141 Printed: 1/11/2010 12:39:33 PM Page 27 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit I Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 9 Dismantlement Site Modifications and Preparations Distributed 9.01 Revitalize Infrastructure and Repower Site $0 $0 $0 $27,957 $3,634 $31,591 9.02 Perform Post-SAFSTOR Baseline Radiation Survey $233 $88 $0 $0 $42 $363 9.03 Finalize Residual Radiation Inventory $37 $41 $0 90 $10 $88 9.04 Select Shipping Casks and Obtain Shipping Permits $29 $0 $0 $0 $4 $33 9.05 Design, Specify, and Procure Special Items and Materials $782 $5,300 $0 $0 $791 $6,873 9.06 Modify Containment Access $300 $554 $0 $0 $111 $965 9.07 Construct New Change Rooms, Hot Laundry, In-Plant Laydown Areas $0 $869 $0 $0 $113 $982 9.08 Test Special Cutting and Handling Equipment and Train Operators $882 $145 $0 $0 $134 $1,161 9.09 Procure Non-Engineered Standard Equipment $0 $4,444 $0 $0 $578 $5,022 Distributed Subtotal $2,263 $11,441 $0 $27,957 $5,417 $47,078 Undistributed 1.01 Utility Staff $26,091 $0 $0 $0 $3,392 $29,483 1.02 Utility Staff HP Supplies $0 $899 $0 $0 $135 $1,034 1.03 Security Guard Force $1,996 $0 $0 $0 $299 $2,295 1.04 Insurance $0 $0 $0 $956 $143 $1,100 1.05 Property Taxes $0 $0 $0 $16 $2 $18 1.06 NRC Decommissioning Fees $0 $0 $0 $594 $89 $683 1.07 Materials and Services $0 $8,054 $0 $0 $1,208 $9,262 1.08 DAW Disposal $0 $0 $21 $0 $3 $24 1.09 Energy $0 $0 $0 $645 $97 $742 1.10 Decommissioning General Contractor Staff $16,313 $0 $0 $0 $2,121 $18,434 1.11 DGC HP Supplies $0 $769 $0 $0 $115 $884 Undistributed Subtotal $44,400 $9,722 $21 $2,211 $7,604 $63,959 Printed: 1/1 1/2010 12:39:33 PM Page 28 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equ ipment Disposal Other Contingency Total SAFSTOR Pd 9 Subtotal $46,663 21,163 $21 $30,168 $13,021 $111,037 Printed: 1/11/2010 12:39:33 PM Page 29 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency . Total SAFSTOR Pd 10 Major Component Removal Distributed 10.01 Remove, Package and Dispose of Non-Essential Systems $10,049 $2,322 $7,230 $0 $4,508 $24,109 10.02 Segment, Package and Dispose of Nuclear Steam Supply System $2,343 $923 $29,805 $0 $7,606 $40,677 10.03 Decon Shield Plugs, Pool Plugs and Stud Tensioners $37 $7 $142 $0 $43 $229 10.04 Remove and Dispose of Spent Fuel Storage Racks $51 $234 $1,451 $0 $399 $2,136 10.05 Finalize Internals and Vessel Segmenting Details. $18 $0 $0 $0 $4 $22 10.06 Reactor Vessel Insulation Removal and Disposal $104 $15 $214 $0 $109 $441 10.07 Segment, Package and Ship Reactor Internals $2,790 $950 $8,641 $0 $3,773 $16,153 10.08 Package and Ship Reactor Pressure Vessel' $2,922 $1,073 $6,513 $0 $3,336 $13,843 10.09 Drain Dryer Separator Pool and Process Liquid Waste $0 $0 $0 $0 $0 $0 10.10 Removal and Disposal of Sacrificial Shield Wall and Reactor Pedestal $219 $447 $830 $0 $344 $1,840 10.11 Segment, Package and Dispose of Refueling Bridge $50 $9 $262 $0 $74 $395 10.12 Segment, Package and Dispose of Contaminated Decon Equipment and Tooling $22 $4 $131 $0 $36 $194 10.13 Remove, Package and Dispose of Remaining Active Plant Systems $3,210 $1,032 $1,407 $0 $1,299 $6,948 Distributed Subtotal $21,815 $7,016 $56,626 $0 $21,531 $106,987 Undistributed 1.01 Utility Staff $28,823 $0 $0 $0 $3,747 $32,570 1.02 Utility Staff HP Supplies $0 $1,094 $0 $0 $164 $1,258 1.03 Security Guard Force $2,566 $0 $0 $0 $385 $2,951 1.04 Insurance $0 $0 $0 $1,230 $184 $1,414 1.05 Property Taxes $0 $0 $0 $20 $3 $23 1.06 NRC Decommissioning Fees $0 $0 $0 $1,258 $189 $1,446 1.07 Materials and Services $0 $8,673 $0 $0 $1,301 $9,974 1.08 DAW Disposal $0 $0 $246 $0 $37 $282 1.09 Energy $0 $0 $0 $1,250 $188 $1,438 Printed: 1/11/2010 12:39:33 PM Page 30 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.10 Decommissioning General Contractor Staff $28,276 " $0 $0 $0 $3,676 $31,952 1.11 DGC HP Supplies $0 $1,514 $0 $0 $227 $1,741 Undistributed Subtotal $59,665 $11,281 $246 $3,758 $10,101 $85,049 SAFSTOR Pd 1 Subtotal $81,480 $18,297 $56,872 $3,758 $31,632 $192,036 Printed: 1/11/2010 12:39:33 PM Page 31 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestdr Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 11 Site Decontamination Distributed 11.01 Decon Reactor Building $2,761 $2,213 $4,493 $0 $2,177 $11,644 11.02 Decon Turbine Building $541 $768 $530 $0 $423 $2,262 11.03 Decon Radwaste Building $116 $144 $169 $0 $99 $528 11.04 Decon HPCI and RCIC Building $26 $39 $25 $0 $21 $110 11.05 Decon Administration Building $9 $5 $10 $0 $6 $30 11.06 Decon Off-Gas Retention Building $44 $17 $21 $0 $19 $100 11.07 Decon Low Level Radwaste Storage and Processing $208 $312 $255 $0 $178 $954 11.08 Decon Off-Gas Stack $52 $48 $142 $0 $56 $298 11.10 Remove Underground Storm Drains and Manholes $33 $25 $34 $0 $21 $114 11.11 Final Status Survey for Structures $5,188 $928 $0 $921 $915 $7,952 11.12 Final Status Survey for Land Areas $915 $54 $0 $0 $126 $1,094 11.13 Prepare Final Report of Dismantling Program $65 $3 $0 $0 $9 $76 Distributed Subtotal $9,958 $4,556 $5,679 $921 $4,050 $25,162 Undistributed 1.01 Utility Staff $19,014 $0 $0 $0 $2,472 $21,486 1.02 Utility Staff HP Supplies $0 $1,258 $0 $0 $189 $1,447 1.03 Security Guard Force $2,193 $0 $0 $0 $329 $2,522 1.04 Insurance $0 $0 $0 $1,051 $158 $1,208 1.05 Property Taxes $0 $0 $0 $17 $3 $20 1.06 NRC Decommissioning Fees $0 $0 $0 $1,075 $161 $1,236 1.07 Materials and Services $0 $6,139 $0 $0 $921 $7,060 1.08 DAW Disposal $0 $0 $115 $0 $17 $132 1.09 Energy $0 $0 $0 $946 $142 $1,088 1.10 Decommissioning General Contractor Staff $16,941 $0 $0 $0 $2,202 $19,144 Printed: 1/11/2010 12:39:33 PM Page 32 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.11 DGC HP Supplies $0 $720 $0 $0 $108 $827 Undistributed Subtotal $38,148 $8,117 $115 $3,089 $6,702 $56,170 SAFSTOR Pd 1 Subtotal $48,106 $12,673 $5,794 $4,010 $10,752 $81,332 Printed: 1/11/2010 12:39:33 PM Page 33 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit I Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total A. License Termination Subtotal $257,032 $73,841 $75,855 $90,841 $80,726 $578,297 B. Spent Fuel Dry Pd 1 Fuel Pool Island Design Distributed 12.01 Design Spent Fuel Support System Modifications $370 $6 $0 $0 $49 $425 12.02 Design Control Room Relocation $358 $5 $0 $0 $47 $411 12.03 Design Spent Fuel Storage Security Modifications $275 $4 $0 $0 $36 $315 Distributed Subtotal $1,003 $15 $0 $0 $132 $1,151 Undistributed 2.01 Utility Spent Fuel Staff $93 $0 $0 $0 $12 $106 Undistributed Subtotal $93 $0 $0 $0 $12 $106 Dry Pd 1 Subtotal $1,096 $15 $0 $0 $144 $1,257 Printed: 1/11/2010 12:39:33 PM Page 34 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 2 Spent Fuel Cooling and Transfer to Dry Storage Distributed 13.01 Install Spent Fuel Pool System Modifications $119 $1,658 $0 $0 $231 $2,008 13.02 Implement Control Room Modifications $956 $1,434 $0 $0 $311 $2,701 13.03 Implement Spent Fuel Pool Security Modifications $500 $750 $0 $0 $163 $1,413 13.04 Purchase of Dry Storage Modules for Fuel Assemblies $0 $36,162 $0 $0 $5,424 $41,586 Distributed Subtotal $1,575 $40,004 $0 $0 $6,129 $47,708 Undistributed 2.01 Utility Spent Fuel Staff $2,049 $0 $0 $0 $266 $2,316 2.02 Utility Staff HIP Supplies $0 $791 $0 $0 $119 $910 2.03 Fuel Pool Maintenance and Operation Staff $15,537 $0 $0 $0 $2,330 $17,867 2.05 Security Guard Force $26,769 $0 $0 $0 $4,015 $30,784 2.06 Insurance $0 $0 $0 $4,239 $636 $4,875 2.07 Spent Fuel Fees and Permits $0 $0 $0 $6,372 $956 $7,328 2.08 Energy $0 $0 $0 $1,432 $215 $1,647 2.09 Materials and Services $0 $13,124 $0 $0 $1,969 $15,093 2.10 Spent Fuel Maintenance $0 $0 $0 $999 $150 $1,149 Undistributed Subtotal $44,355 $13,915 $0 $13,042 $10,656 $81,969 Dry Pd 2 Subtotal $45,930 $53,919 $0 $13,042 $16,785 $129,677 Printed: 1/11/2010 12:39:33 PM Page Pg 355o8 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage

• Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 3 Dry Storage During Dormancy Undistributed 2.01 Utility Spent Fuel Staff $41,942 $0 $0 $0 $5,452 $47,395 2.02 Utility Staff HP Supplies $0 $3,275 $0 $0 $491 $3,767 2.04 Additional Staff for Spent Fuel Shipping $8,098 $0 $0 $0 $1,215 $9,313 2.05 Security Guard Force $18,445 $0 $0 $0 $2,767 $21,212 2.06 Insurance $0 $0 $0 $6,575 $986 $7,561 2.07 Spent Fuel Fees and Permits $0 $0 $0 $15,467 $2,320 $17,787 2.08 Energy $0 $0 $0 $1,350 $203 $1,553 2.09 Materials and Services $0 $21,212 $0 $0 $3,182 $24,394 2.10 Spent Fuel Maintenance $0 $0 $0 $2,582 $387 $2,970 Undistributed Subtotal $68,485 $24,487 $0 $25,974 $17,003 $135,952 Dry Pd 3 Subtotal $68,485 $24,487 $o $25,974 $17,003 $135,952 Printed: 1/11/2010 12:39:33 PM Page 36 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing. Unit I Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 4 ISFSI Decommissioning Distributed 15.01 Preparation and NRC Review of License Termination Plan $63 $0 $0 $101 $21 $186 15.02 Verification Survey of Horizontal Storage Modules $74 $27 $0 $0 $13 $115 15.03 Preparation of Final Report on Decommissioning and NRC Review $31 $0 $0 $60 $12 $102 15.04 Clean Demolition of ISFSI $1,215 $662 $1,875 $0 $554 $4,305 Distributed Subtotal $1,383 $689 $1,875 $161 $600 $4,708 Undistributed 2.01 Utility Spent Fuel Staff $686 $0 $0 $0 $89 $775 2.05 Security Guard Force *$663 $0 $0 $0 $99 $762 2.08 Energy $0 $0 $0 $5 $1 $5 2.09 Materials and Services $0 $379 $0 $0 $57 $436 2.12 Decommissioning General Contractor Staff $408 $0 $0 $0 $61 $469 Undistributed Subtotal $1,757 $379 $0 $5 $307 $2,447 Dry Pd 4 Subtotal $3,140 $1,068 $1,875 $166 $907 $7,155 Printed: 1/11/2010 12:39:33 PM Page 37 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yuc~ca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total B. Spent Fuel Subtotal $118,651 $79,489 $1,875 $39,182 $34,839 $274,041 C. Greenfield Grn Pd 1 Clean Building Demolition Distributed 16.01 Clean Building Demolition Equipment $0 $738 $0 $0 $170 $907 16.02 Demolish Low-Level Radwaste Building $2,288 $1,129 $204 $0 $584 $4,204 16.03 Demolish Turbine Building $2,607 $1,258 $151 $0 $648 $4,664 16.04 Demolish Data Acquisition and Technical Support Building $214 $142 $50 $0 $67 $472 16.05 Demolish Control and Administrative Buildings $571 $260 $58 $0 $142 $1,031 16.06 Demolish Guard Facility $91 $42 $8 $0 $22 $163 16.07 Demolish HPCI and RCIC Building $120 $135 $6 $0 $48 $309 16.08 Demolish Reactor Building $3,298 $1,836 $295 $0 $890 $6,319 16.09 Demolish Cooling Towers and Related Structures $533 $696 $185 $0 $253 $1,667 16.10 Demolish Training Center $97 $42 $10 $0 $23 $172 16.11 Demolish Plant Support Center $222 $159 $59 $0 $73 $514 16.12 Remove and Dispose of Underground Storage Tanks $18 $22 $0 $0 $7 $48 16.13 Demolish Off-Gas Stack $85 $45 $18 $0 $24 $172 16.14 Demolish Existing Waste Water Treatment Plant $13 $1 $3 $0 $2 $20 16.15 Demolish Remaining Structures $1,524 $2,042 $496 $0 $732 $4,794 Distributed Subtotal $11,681 $8,547 $1,543 $0 $3,685 $25,456 Undistributed 3.01 Utility Staff $3,765 $0 $0 $0 $489 $4,255 3.02 Security Guard Force $606 $0 $0 $0 $91 $697 3.03 Decommissioning General Contractor Staff $6,313 $0 $0 $0 $821 $7,133 3.04 Energy $0 $0 $0 $392 $59 $451 3.05 Insurance $0 $0 $0 $141 $21 $163 Printed: 1/11/2010 12:39:33 PM Page 38 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Undistributed Subtotal $10,684 $0 $0 $533 $1,481 $12,699 Grn Pd 1 Subtotal $22,365 $8,547 $1,543 $533 $5,166 $38,155 Printed: 1/11/2010 12:39:33 PM Page 39 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: i/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Grn Pd 2 Site Restoration Distributed 17.01 Site Restoration Equipment $0 $103 $0 $0 $24 $127 17.02 Remove Temporary Structures $37 $30 $0 $0 $12 $78 17.03 Finish Grading and Re-Vegetate Site $376 $272 $0 $0 $111 $760 Distributed Subtotal $413 $405 $0 $0 $147 $965 Undistributed 3.01 Utility Staff $619 $0 $0 $0 $81 $700 3.02 Security Guard Force $154 $0 $0 $0 $23 $177 3.03 Decommissioning General Contractor Staff $1,113 $0 $0 $0 $145 $1,257 3.04 Energy $0 $0 $0 $2 $0 $3 3.05 Insurance $0 $0 $0 $36 $5 $41 Undistributed Subtotal $1,886 $0 $0 $38 $254 $2,178 Grn Pd 2 Subtotal $2,299 $405 $0 $38 $401 $3,143 Printed: 1/11/2010 12:39:33 PM Page 40 of 80

Table 2 Duane Arnold SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Scenario Number 2 License Status Existing Unit 1 Shut Down Date 2/21/2014 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total C. Greenfield Subtotal $24,664 $8,952 $1,543 $571 $5,567 $41,298 Scenario No. 2 Total $400,347 $162,282 $79,273 $130,594 $121,132 $893,636 Printed: 1/11/2010 12:39:33 PM Page 41 of 80

1. Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total A. License Termination Decon Pd 1 Decommissioning Planning Prior to Shutdown Distributed 1.01 Prepare Written Notification of Cessation of Operations $0 $0 $0 $0 $0 $0 1.02 Prepare Written Notification of Fuel Removal from Vessel $0 $0 $0 $0 $0 $0 1.03 Decommissioning Planning and Design $236 $0 $0 $0 $31 $267 1.04 Prepare Integrated Work Sequence and Schedule for Decommissioning $137 $0 $0 $0 $18 $155 1.05 Prepare Decommissioning Activity Specifications $2,486 $20 $0 $0 $326 $2,832 1.06 Prepare License Termination Plan $317 $10 $0 $0 $42 $369 1.07 Prepare Detailed Work Procedures for Decommissioning $2,259 $8 $0 $0 $295 $2,561 1.08 Preparation of Decommissioning License Documents $1,661 $7 $0 $0 $217 $1,885 1.09 Planning and Design of Site Repowering $579 $7 $0 $0 $76 $662 1.10 Design Containment Access Modifications $221 $3 $0 $0 $29 $253 1.11 Planning and Design of Primary System Decontamination $202 $2 $0 $0 $26 $230 1.12 Select Decommissioning General Contractor $251 $4 $0 $0 $33 $289 Distributed Subtotal $8,349 $61 $0 $0 $1,093 $9,503 Undistributed 1.01 Utility Staff $2,480 $0 $0 $0 $322 $2,802 1.10 Decommissioning General Contractor Staff $1,929 $0 $0 $0 $251 $2,179 Undistributed Subtotal $4,409 $0 $0 $0 $573 $4,981 Decon Pd 1 Subtotal $12,758 $61 $0 $0 $1,666 $14,484 Printed: 1/11/2010 12:39:33 PM Page 42 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other. Contingency Total Decon Pd 2 Site Modifications and Preparations Distributed 2.01 Administrative Activities $757 $4 $0 $0 $99 $860 2.02 Planning for Asbestos Abatement $132 $2 $0 $0 $17 $152 2.03 Planning and Design of Site Characterization $311 $3 $0 $0 $41 $356 2.04 Perform Baseline Radiation Survey $233 $88 $0 $0 $42 $363 2.05 Primary System Decontamination $848 $805 $894 $0 $586 $3,134 2.06 Flush and Drain Non-Essential Systems $35 $6 $596 $0 $146 $783 2.07 Hot Spot Removal $545 $176 $894 $0 $372 $1,987 2.08 Finalize Residual Radiation Inventory $37 $41 $0 $0 $10 $88 2.09 Select Shipping Casks and Obtain Shipping Permits $29 $0 $0 $0 $4 $33 2.10 Design, Specify, and Procure Special Items and Materials $782 $5,300 $0 $0 $791 $6,873 2.11 Modify Containment Access $300 $554 $0 $0 $111 $965 2.12 Construct New Change Rooms, Hot Laundry, In-Plant Laydown Areas $0 $869 $0 $0 $113 $982 2.13 Repower Site $524 $1,578 $0 $0 $273 $2,376 2.14 Test Special Cutting and Handling Equipment and Train Operators $882 $145 $0 $0 $134 $1,161 2.15 Procure Non-Engineered Standard Equipment $0 $4,444 $0 $0 $578 $5,022 2.16 Asbestos Abatement $145 $57 $196 $0 $92 $490 Distributed Subtotal $5,560 $14,072 $2,580 $0 $3,409 $25,625 Undistributed 1.01 Utility Staff $33,684 $0 $0 $0 $4,379 $38,063 1.02 Utility Staff HiP Supplies $0 $1,161 $0 $0 $174 $1,335 1.03 Security Guard Force $2,577 $0 $0 $0 $387 $2,963 1.04 Insurance $0 $0 $0 $1,235 $185 $1,420 1.05 Property Taxes $0 $0 $0 $20 $3 $23 1.06 NRC Decommissioning Fees $0 $0 $0 $767 $115 $882 Printed: 1/11/2010 12:39:33 PM Page 43 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.07 Materials and Services $0 $10,398 $0 $0 $1,560 $11,958 1.08 DAW Disposal $0 $0 $45 $0 $7 $52 1.09 Energy $0 $0 $0 $1,000 $150 $1,150 1.10 Decommissioning General Contractor Staff $21,060 $0 $0 $0 $2,738 $23,798 1.11 DGC HP Supplies $0 $992 $0 $0 $149 $1,141 Undistributed Subtotal $57,321 $12,551 $45 $3,022 $9,847 $82,785 Decon Pd 2 Subtotal $62,881 $26,623 $2,625 $3,022 $13,256 $108,410 Printed: 1/11/2010 12:39:33 PM Page 44 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decorn Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Decon Pd 3 Major Component Removal Distributed 3.01 Remove, Package and Dispose of Non-Essential Systems $10,049 $2,322 $7,230 $0 $4,508 $24,109 3.02 Segment, Package and Dispose of Nuclear Steam Supply System $2,343 $923 $29,805 $0 $7,606 $40,677 3.03 Decon Shield Plugs, Pool Plugs and Stud Tensioners $37 $7 $142 $0 $43 $229 3.04 Volume Reduce Control Rods Blades and LPRMS $323 $201 $5,173 $0 $1,310 $7,006 3.05 Purchase Dry Storage Modules for GTCC Waste $0 $1,096 $0 $0 $252 $1,348 3.06 Finalize Internals and Vessel Segmenting Details $18 $2 $0 $0 $4 $24 3.07 Reactor Vessel Insulation Removal and Disposal $104 $15' $214 $0 $109 $441 3.08 Segment, Package and Ship Reactor Internals $3,080 $1,018 $22,310 $0 $7,352 $33,759 3.09 Package and Ship Reactor Pressure Vessel $2,922 $1,073 $6,513 $0 $3,336 $13,843 3.10 Drain Dryer Separator Pool and Process Liquid Waste $0 $0 $0 $0 $0 $0 3.11 Removal and Disposal of Sacrificial Shield Wall and Reactor Pedestal $219 $447 $830 $0 $344 $1,840 3.12 Remove and Dispose of Hazardous Waste $0 $0 $0 $131 $20 $151 Distributed Subtotal $19,095 $7,104 $72,217 $131 $24,884 $123,427 Undistributed 1.01 Utility Staff $47,010 $0 $0 $0 $6,111 $53,121 1.02 Utility Staff HP Supplies $0 $1,784 $0 $0 $268 $2,052 1.03 Security Guard Force $4,186 $0 $0 $0 $628 $4,813 1.04 Insurance $0 $0 $0 $2,006 $301 $2,306 1.05 Property Taxes $0 $0 $0 $33 $5 $37 1.06 NRC Decommissioning Fees $0 $0 $0 $2,051 $308 $2,359 1.07 Materials and Services $0 $14,145 $0 $0 $2,122 $16,267 1.08 DAW Disposal $0 $0 $209 $0 $31 $240 1.09 Energy $0 $0 $0 $1,953 $293 $2,246 1.10 Decommissioning General Contractor Staff $46,118 $0 $0 $0 $5,995 $52,113 Printed: 1/11/2010 12:39:33 PM Page 45 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date" I/ 112025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.11 DGCIIP Supplies $0 $2,470 $0 $0 $370 $2,840 Undistributed Subtotal $97,314 $18,399 $209 $6,043 $16,432 $138,394 Decon Pd 3 Subtotal $116,409 $25,503 $72,426 $6,174 $41,316 $261,821 Printed: 1/11/2010 12:39:33 PM Page 46 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Decon Pd 4 Balance of Plant Decontamination Distributed 4.01 Remove and Dispose of Spent Fuel Storage Racks $51 $234 $1,451 $0 $399 $2,136 4.02 Drain Spent Fuel Pool and Process Liquid Waste $0 $0 $0 $0 $0 $0 4.03 Flush and Drain Essential Systems Following Fuel Pool Closure $24 $10 $596 $0 $145 $775 4.04 Removal and Disposal of Spent Resins, Filter Media and Tank Sludge $25 $25 $1,490 $0 $354 $1,895 4.05 Removal and Disposal of Off Gas System Adsorber $25 $25 $2,429 $0 $570 $3,049 4.06 Segment, Package and Dispose of Refueling Bridge $50 $9 $262 $0 $74 $395 4.07 Segment, Package and Dispose of Spent Fuel Pool Island Equipment $7 $1 $135 $0 $33 $176 4.08 Remove, Package and Dispose of Remaining Active Plant Systems.. $3,210 $1,032 $1,407 $0 $1,299 $6,948 4.09 Decon Reactor Building $2,761 $2,213 $4,493 $0 $2,177 $11,644 4.10 Decon Turbine Building $541 $768 $530 $0 $423 $2,262 4.11 Decon Radwaste Building $116 $144 $169 $0 $99 $528 4.12 Decon HPCI and RCIC Building $26 $39 $25 $0 $21 $110 4.13 Decon Administration Building $9 $5 $10 $0 $6 $30 4.14 Decon Off-Gas Retention Building $44 $17 $21 $0 $19 $100 4.15 Decon Low Level Radwaste Storage and Processing $208 $312 $255 $0 $178 $954 4.16 Decon Off-Gas Stack $52 $48 $142 $0 $56 $298 4.17 Segment, Package and Dispose of Contaminated Decon Equipment and Tooling $22 $4 $131 $0 $36 $194 4.18 Remove Underground Storm Drains and Manholes $33 $25 $34 $0 $21 $114 4.19 Final Status Survey for Structures $5,188 $928 $0 $921 $1,545 $8,583 4.20 Final Status Survey for Land Areas $915 $54 $0 $0 $223 $1,191 4.21 Prepare Final Report of Dismantling Program $65 $3 $0 $0 $16 $83 Distributed Subtotal $13,372 $5,896 $13,580 $921 $7,694 $41,465 Undistributed 1.01 Utility Staff $20,571 $0 $0 $0 $2,674 $23,245 Printed: 1/11/2010 12:39:33 PM Page 47 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: I/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.02 Utility Staff HP Supplies $0 $1,361 $0 $0 $204 $1,565 1.03 Security Guard Force $2,373 $0 $0 $0 $356 $2,729 1.04 Insurance $0 $0 $0 $1,137 $171 $1,307 1.05 Property Taxes $0 $0 $0 $18 $3 $21 1.06 NRC Decommissioning Fees $0 $0 $0 $706 $106 $812 1.07 Materials and Services $0 $6,642 $0 $0 $996 $7,638 1.08 DAW Disposal $0 $0 $160 $0 $24 $184 1.09 Energy $0 $0 $0 $966 $145 $1,111 1.10 Decommissioning General Contractor Staff $18,328 $0 $0 $0 $2,383 $20,711 1.11 DGC HP Supplies $0 $778 $0 $0 $117 $895 Undistributed Subtotal $41,272 $8,781 $160 $2,827 $7,179 $60,218 Decon Pd 4 Subtotal $54,644 $14,677 $13,740 $3,748 $14,873 $101,683 Printed: 1/11/2010 12:39:33 PM Page 48 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: t11/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total A. License Termination Subtotal $246,692 $66,864 $88,791 $12,944 $71,111 $486,398 B. Spent Fuel Dry Pd 1 Fuel Pool Island Design Distributed 5.01 Design Spent Fuel Support System Modifications $370 $6 $0 $0 $49 $425 5.02 Design Control Room Relocation $358 $5 $0 $0 $47 $411 5.03 Design Spent Fuel Storage Security Modifications $275 $4 $0 $0 $36 $315 Distributed Subtotal $1,003 $15 $0 $0 $132 $1,151 Undistributed 2.01 Utility Spent Fuel Staff $93 $0 $0 $0 $12 $106 Undistributed Subtotal $93 $0 $0 $0 $12 $106 Dry Pd 1 Subtotal $1,096 $15 $0 $0 $144 $1,257 Printed: 1/11/2010 12:39:34 PM Page 49 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 2 Spent Fuel Cooling and Transfer to Dry Storage Distributed 6.01 Install Spent Fuel Pool System Modifications $119 $1,658 $0 $0 $231 $2,008 6.02 Implement Control Room Modifications $956 $1,434 $0 $0 $311 $2,701 6.03 Implement Spent Fuel Pool Security Modifications $500 $750 $0 $0 $163 $1,413 6.04 Purchase of Dry Storage Modules for Fuel Assemblies $0 $23,012 $0 $0 $3,452 $26,464 Distributed Subtotal $1,575 $26,854 $0 $0 $4,157 $32,586 Undistributed 2.01 Utility Spent Fuel Staff $2,050 $0 $0 $0 $267 $2,317 2.02 Utility Staff HP Supplies $0 $791 $0 $0 $119 $910 2.03 Fuel Pool Maintenance and Operation Staff $15,545 $0 $0 $0 $2,332 $17,877 2.05 Security Guard Force $26,784 $0 $0 $0 $4,018 $30,801 2.06 Insurance $0 $0 $0 $4,241 $636 $4,877 2.07 Spent Fuel Fees and Permits $0 $0 $0 $6,376 $956 $7,332 2.08 Energy $0 $0 $0 $1,433 $215 $1,648 2.09 Materials and Services $0 $13,131 $0 $0 $1,970 $15,101 2.10 Spent Fuel Maintenance $0 $0 $0 $1,000 $150 $1,150 Undistributed Subtotal .$44,379 $13,922 $0 $13,050 $10,663 $82,013 Dry Pd 2 Subtotal $45,954 $40,776 $0 $13,050 $14,820 $114,599 Printed: 1/11/2010 12:39:34 PM Page 50 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 3 Dry Storage During Decommissioning Undistributed 2.01 Utility Spent Fuel Staff $4,223 $0 $0 $0 $549 $4,772 2.02 Utility Staff HP Supplies $0 $330 $0 $0 $49 $379 2.04 Additional Staff for Spent Fuel Shipping $815 $0 $0 $0 $122 $938 2.05 Security Guard Force $1,857 $0 $0 $0 $279 $2,136 2.06 Insurance $0 $0 $0 $662 $99 $761 2.07 Spent Fuel Fees and Permits $0 $0 $0 $1,557 $234 $1,791 2.08 Energy $0 $0 $0 $11 $2 $13 2.09 Materials and Services $0 $2,136 $0 $0 $320 $2,456 2.10 Spent Fuel Maintenance $0 $0 $0 $260 $39 $299 Undistributed Subtotal $6,895 $2,466 $0 $2,490 $1,693 $13,545 Dry Pd 3 Subtotal $6,895 $2,466 $0 $2,490 $1,693 $13,545 Printed: 1/11/2010 12:39:34 PM Page 51 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 4 Dry Storage Only Undistributed 2.01 Utility Spent Fuel Staff $29,194 $0 $0 $0 $3,795 $32,990 2.02 Utility Staff HP Supplies $0 $2,280 $0 $0 $342 $2,622 2.04 Additional Staff for Spent Fuel Shipping $5,637 $0 $0 $0 $846 $6,483 2.05 Security Guard Force $12,839 $0 $0 $0 $1,926 $14,765 2.06 Insurance $0 $0 $0 $7,572 $1,136 $8,708 2.07 Spent Fuel Fees and Permits $0 $0 $0 $10,766 $1,615 $12,381 2.08 Energy $0 $0 $0 $940 $141 $1,081 2.09 Materials and Services $0 $14,765 $0 $0 $2,215 $16,980 2.10 Spent Fuel Maintenance $0 $0 $0 $1,797 $270 $2,067 2.11 Property Taxes $0 $0 $0 $240 $36 $276 Undistributed Subtotal $47,670 $17,045 $0 $21,315 $12,322 $98,353 Dry Pd 4 Subtotal $47,670 $17,045 $0 $21,315 $12,322 $98,353 Printed: 1/11/2010 12:39:34 PM Page 52 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 5 ISFSI Decommissioning Distributed 9.01 Preparation and NRC Review of License Termination Plan $63 $0 $0 $101 $21 $186 9.02 Verification Survey of Horizontal Storage Modules $46 $22 $0 $0 $9 $77 9.03 Preparation of Final Report on Decommissioning and NRC Review $31 $0 $0 $60 $12 $102 9.04 Clean Demolition of ISFSI $1,103 $612 $1,514 $0 $481 $3,710 Distributed Subtotal $1,243 $634 $1,514 $161 $523 $4,075 Undistributed 2.01 Utility Spent Fuel Staff $686 $0 $0 $0 $89 $775 2.05 Security Guard Force $663 $0 $0 $0 $99 $762 2.06 Insurance $0 $0 $0 $155 $23 $178 2.08 Energy $0 $0 $0 $5 $1 $5 2.09 Materials and Services $0 $379 $0 $0 $57 $436 2.11 Property Taxes $0 $0 $0 $12 $2 $14 2.12 Decommissioning General Contractor Staff $408 $0 $0 $0 $61 $469 Undistributed Subtotal $1,757 $379 $0 $172 $332 $2,639 Dry Pd 5 Subtotal $3,000 $1,013 $1,514 $333 $855 $6,714 Printed: 1/11/2010 12:39:34 PM Page 53 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit I Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total B. Spent Fuel Subtotal $104,615 $61,315 $1,514 $37,188 $29,834 $234,468 C. Greenfield Grn Pd 1 Clean Building Demolition Distributed 10.01 Clean Building Demolition Equipment $0 $738 $0 $0 $170 $907 10.02 Install Temporary Office Buildings $14 $63 $0 $0 $16 $93 10.03 Demolish Low-Level Radwaste Building $2,288 $1,129 $204 $0 $584 $4,204 10.04 Demolish Turbine Building $2,607 $1,258 $151 $0 $648 $4,664 10.05 Demolish Data Acquisition and Technical Support Building $214 $142 $50 $0 $67 $472 10.06 Demolish Control and Administrative Buildings $571 $260 $58 $0 $142 $1,031 10.07 Demolish Guard Facility $91 $42 $8 $0 $22 $163 10.08 Demolish HPCI and RCIC Building $120 $135 $6 $0 $48 $309 10-.09 Demolish Reactor Building $3,298 $1,836 $295 $0 $890 $6,319 10.10 Demolish Cooling Towers and Related Structures $533 $696 $185 $0 $253 $1,667 10.11 Demolish Training Center $97 $42 $10 $0 $23 $172 10.12 Demolish Plant Support Center $222 $159 $59 $0 $73 $514 10.13 Remove and Dispose of Underground Storage Tanks $18 $22 $0 $0 $7 $48 10.14 Demolish Off-Gas Stack $85 $45 $18 $0 $24 $172 10.15 Demolish Existing Waste Water Treatment Plant $13 $1 $3 $0 $2 $20 10.16 Demolish Remaining Structures $1,524 $2,042 $496 $0 $732 $4,794 Distributed Subtotal $11,695 $8,610 $1,543 $0 $3,701 $25,549 Undistributed 3.01 Utility Staff $3,765 $0 $0 $0 $489 $4,255 3.02 Security Guard Force $606 $0 $0 $0 $91 $697 3.03 Decommissioning General Contractor Staff $6,313 $0 $0 $0 $821 $7,133 3.04 Energy $0 $0 $0 $244 $37 $281 Printed: 1/11/2010 12:39:34 PMPae4of8 Page 54 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 3.05 Insurance $0 $0 $0 $141 $21 $163 Undistributed Subtotal $10.684 $0 $0 $385 $1.459 $12.529 Grn Pd 1 Subtotal $22,379 $8,610 $1,543 $385 $5,160 $38,078 Printed: 1/11/2010 12:39:34 PM Page 55 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain. Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 J, 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Grn Pd 2 Site Restoration Distributed 11.01 Site Restoration Equipment $0 $103 $0 $0 $24 $127 11.02 Remove Temporary Structures $11 $9 $0 $0 $3 $23 11.03 Finish Grading and Re-Vegetate Site $376 $272 $0 $0 $111 $760 Distributed Subtotal $387 $384 $0 $0 $138 $910 Undistributed 3.01 Utility Staff $496 $0 $0 $0 $64 $560 3.02 Security Guard Force $123 $0 $0 $0 $18 $142 3.03 Decommissioning General Contractor Staff $890 $0 $0 $0 $116 $1,006 3.04 Energy $0 $0 $0 $2 $0 $2 3.05 Insurance $0 $0 $0 $29 $4 $33 Undistributed Subtotal $1.509 $0 $0 $31 $202 $1.743 Grn Pd 2 Subtotal $1,896 $384 $0 $31 $340 $2,653 Printed: 1/11/2010 12:39:34 PM Page 56 of 80

Table 3 Duane Arnold Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Scenario Number 3 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Decon Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total C. Greenfield Subtotal $24,275 $8,994 $1,543 $416 $5,500 $40,731 Scenario No. 3 Total $375,582 $137,173 $91,848 $50,548 $106,445 $761,597 Printed: 1/11/2010 12:39:34 PM Page 57 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total A. License Termination SAFSTOR Pd 1 SAFSTOR Planning Prior to Shutdown Distributed 1.01 Prepare Written Notification of Cessation of Operations $0 $0 $0 $0 $0 $0 1.02 Prepare Written Notification of Fuel Removal from Vessel $0 $0 $0 $0 $0 $0 1.03 SAFSTOR Planning and Design $236 $0 $0 $0 $31 $267 1.04 Planning for SAFSTOR Baseline Radiation Survey $311 $3 $0 $0 $41 $356 1.05 Prepare SAFSTOR Plan $1,881 $32 $0 $0 $249 $2,162 1.06 Preparation of SAFSTOR License Documents $1,661 $7 $0 $0 $217 $1,885 1.07 Prepare SAFSTOR Integrated Work Schedule $79 $4 $0 $0 $11 $93 1.08 Prepare SAFSTOR Activity Specifications $588 $5 $0 $0 $77 $670 1.09 Adminstrative Activities in Preparation for SAFSTOR $149 $0 $0 $0 $19 $169 1.10 Prepare Detailed SAFSTOR Work Procedures $1,158 $8 $0 $0 $152 $1,317 1.11 Planning for Asbestos Abatement $132 $2 $0 $0 $17 $152 1.12 Select SAFSTOR General Contractor $251 $4 $0 $0 $33 $289 1.13 Planning and Design of Primary System Decontamination $202 $2 $0 $0 $26 $230 Distributed Subtotal $6,648 $67 $0 $0 $873 $7,590 Undistributed 1.01 Utility Staff $2,480 $0 $0 $0 $322 $2,802 1.10 Decommissioning General Contractor Staff $1,929 $0 $0 $0 $251 $2,179 Undistributed Subtotal $4.409 $0 $0 $0 $573 $4.981 SAFSTOR Pd 1 Subtotal $11,057 $67 $0 $0 $1,446 $12,571 Printed: 1/11/2010 12:39:34 PM Page 58 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry . Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 2 SAFSTOR Preparations Following Shutdown Distributed 2.01 Procure Non-Engineered Standard Equipment For SAFSTOR Preparations $0 $3,417 $0 $0 $444 $3,862 2.02 Primary System Decontamination $848 $805 $894 $0 $586 $3,134 2.03 Flush, Drain and De-Energize Non-Essential Systems $16 $6 $596 $0 $142 $761 2.04 Drain and Process Suppression Pool Water and Hydrolase Torus Walls $0 $0 $0 $0 $0 $0 2.05 Drain and Process Dryer Storage Pool Water and Hydrolase Dryer Storage Pool $0 $0 $0 $0 $0 $0 2.06 General Area Cleanup $1,146 $478 $165 $0 $411 $2,200 2.07 Asbestos Abatement $145 $57 $196 $0 $92 $490 2.08 Remove and Dispose of Hazardous Waste $0 $0 $0 $131 $20 $151 2.09 Prepare SAFSTOR Report $46 $0 $0 $0 $6 $52 Distributed Subtotal $2,201 $4,763 $1,851 $131 $1,701 $10,650 Undistributed 1.01 Utility Staff $16,842 $0 $0 $0 $2,189 $19,031 1.02 Utility Staff HP Supplies $0 $580 $0 $0 $87 $668 1.03 Security Guard Force $1,288 $0 $0 $0 $193 $1,482 1.04 Insurance $0 $0 $0 $617 $93 $710 1.05 Property Taxes $0 $0 $0 $10 $2 $12 1.06 NRC Decommissioning Fees $0 $0 $0 $383 $57 $441 1.07 Materials and Services $0 $5,199 $0 $0 $780 $5,979 1.08 DAW Disposal $0 $0 $28 $0 $4 $32 1.09 Energy $0 $0 $0 $500 $75 $575 1.10 Decommissioning General Contractor Staff $10,530 $0 $0 $0 $1,369 $11,899 1.11 DGC HP Supplies $0 $496 $0 $0 $74 $571 Undistributed Subtotal $28,660 $6,275 $28 $1,510 $4,923 $41,400 Printed: 1/11/2010 12:39:34 PM Page 59 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equiipment Disposal Other Contingency Total SAFSTOR Pd 2 Subtotal $30,861 $111,038 $1,879 $1,641 $6,624 $52,050 Printed: 1/11/2010 12:39:34 PM Page 60 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 3 SAFSTOR Preparation Delay During Spent Fuel Pool Operations Undistributed 1.01 Utility Staff $697 $0 $0 $0 $91 $788 1.02 Utility Staff HP Supplies $0 $107 $0 $0 $16 $123 1.03 Security Guard Force $428 $0 $0 $0 $64 $492 1.04 Insurance $0 $0 $0 $2,461 $369 $2,830 1.05 Property Taxes $0 $0 $0 $40 $6 $46 1.06 NRC Decommissioning Fees $0 $0 $0 $836 $125 $961 1.07 Materials and Services $0 $324 $0 $0 $49 $372 1.09 Energy $0 $0 $0 $889 $133 $1,022 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $449 $67 $517 Undistributed Subtotal $1,125 $431 $0 $4,675 $920 $7,151 SAFSTOR Pd 3 Subtotal $1,125 $431 $0 $4,675 $920 $7,151 Printed: 1/11/2010 12:39:34 PM Page 61 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 4 Completion of SAFSTOR Preparations Distributed 4.01 Volume Reduce Control Rods Blades and LPRMS $323 $201 $5,173 $0 $1,310 $7,006 4.02 Drain Spent Fuel Pool and Process Liquid Waste $0 $0 $0 $0 $0 $0 4.03 Flush and Drain Essential Systems Following Fuel Pool Closure $24 $10 $596 $0 $145 $775 4.04 Removal and Disposal of Spent Resins, Filter Media and Tank Sludge $25 $25 $1,490 $0 $354 $1,895 4.05 Removal and Disposal of Off Gas System Adsorber $25 $25 $2,429 $0 $570 $3,049 4.06 Segment, Package and Dispose of Spent Fuel Pool Island Equipment $7 $1 $135 $0 $33 $176 4.07 Secure Site for Dormancy Period $0 $0 $0 $1,500 $225 $1,725 Distributed Subtotal $404 $262 $9,823 $1,500 $2,637 $14,626 Undistributed 1.01 Utility Staff $2,261 $0 $0 $0 $294 $2,555 1.02 Utility Staff HP Supplies $0 $130 $0 $0 $20 $150 1.03 Security Guard Force $442 $0 $0 $0 $66 $508 1.04 Insurance $0 $0 $0 $508 $76 $584 1.05 Property Taxes $0 $0 $0 $8 $1 $9 1.06 NRC Decommissioning Fees $0 $0 $0 $315 $47 $363 1.07 Materials and Services $0 $742 $0 $0 $111 $853 1.08 DAW Disposal $0 $0 $5 $0 $1 $5 1.09 Energy $0 $0 $0 $317 $48 $364 1.11 DGC HP Supplies $0 $96 $0 $0 $14 $110 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $93 $14 $107 Undistributed Subtotal $2,703 $968 $5 $1,241 $692 $5,608 SAFSTOR Pd 4 Subtotal $3,107 $1,230 $9,828 $2,741 $3,329 $20,234 Printed: 1/11/2010 12:39:34 PM Page 62 of 80

Table 4 Duane Arnold SAIVSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 5 Dormancy With Dry Storage Distributed 5.01 Bituminous Roof Replacement - 20 year $259 $89 $38 $0 $58 $444 Distributed Subtotal $259 $89 $38 $0 $58 $444 Undistributed 1.01 Utility Staff $4,862 $0 $0 $0 $632 $5,494 1.02 Utility Staff HiP Supplies $0 $744 $0 $0 $112 $856 1.03 Security Guard Force $2,984 $0 $0 $0 $448 $3,432 1.04 Insurance $0 $0 $0 $17,158 $2,574 $19,732 1.05 Property Taxes $0 $0 $0 $279 $42 $320 1.06 NRC Decommissioning Fees $0 $0 $0 $5,828 $874 $6,702 1.07 Materials and Services $0 $2,258 $0 $0 $339 $2,596 1.09 Energy $0 $0 $0 $1,021 $153 $1,175 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $3,133 $470 $3,603 Undistributed Subtotal $7.846 $3.002 $0 $27.419 $5.644 $43.910 SAFSTOR Pd 5 Subtotal $8,105 $3,091 $38 $27,419 $5,702 $44,354 Printed: 1/11/2010 12:39:34 PM Page 63 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 6 Dormancy Only Distributed 6.01 Bituminous Roof Replacement- 40 year $259 $89 $38 $0 $58 $444 Distributed Subtotal $259 $89 $38 $0 $58 $444 Undistributed 1.01 Utility Staff $3,971 $0 $0 $0 $516 $4,487 1.02 Utility Staff HP Supplies 1 $0 $497 $0 $0 $75 $572 1.03 Security Guard Force $9,965 $0 $0 $0 $1,495 $11,460 1.04 Insurance $0 $0 $0 $9,135 $1,370 $10,505 1.05 Property Taxes $0 $0 $0 $186 $28 $214 1.06 NRC Decommissioning Fees $0 $0 $0 $3,892 $584 $4,476 1.07 Materials and Services $0 $4,222 $0 $0 $633 $4,856 1.09 Energy $0 $0 $0. $682 $102 $785 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $4,185 $628 $4,813 Undistributed Subtotal $13,936 $4,719 $0 $18,080 $5,431 $42,168 SAFSTOR Pd 6 Subtotal $14,195 $4,808 $38 $18,080 $5,489 $42,612 Printed: 1/11/2010 12:39:34 PM Page 64 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 7 Decommissioning Planning During Dormancy Distributed 7.01 Decommissioning Planning and Design $236 $0 $0 $0 $31 $267 7.02 Planning and Design of Site Characterization $311 $3 $0 $0 $41 $356 7.03 Prepare Integrated Work Sequence and Schedule for Decommissioning $137 $0 $0 $0 $18 $155 7.04 Prepare Decommissioning Activity Specifications $2,486 $20 $0 $0 $326 $2,832 7.05 Prepare License Termination Plan $317 $10 $0 $0 $42 $369 7.06 Prepare Detailed Work Procedures for Decommissioning $2,259 $8 $0 $0 $295 $2,561 7.07 Preparation of Decommissioning License Documents $1,661 $7 $0 $0 $217 $1,885 7.08 Planning and Design of Site Revitilization $915 $14 $0 $0 $121 $1,051 7.09 Administrative Activities $757 $4 $0 $0 $99 $860 7.10 Design Containment Access Modifications $221 $3 $0 $0 $29 $253 7.11 Select Decommissioning General Contractor $251 $4 $0 $0 $33 $289 Distributed Subtotal $9,551 $73 $0 $0 $1,252 $10,878 Undistributed 1.01 Utility Staff $3,729 $0 $0 $0 $485 $4,214 1.02 Utility Staff HP Supplies $0 $101 $0 $0 $15 $116 1.04 Insurance $0 $0 $o $1,063 $159 $1,222 1.05 Property Taxes $0 $0 $0 $17 $3 $20 1.06 NRC Decommissioning Fees $0 $0 $0 $660 $99 $759 1.07 Materials and Services $0 $1,244 $0 $0 $187 $1,431 1.09 Energy $0 $0 $0 $63 $9 $73 1.10 Decommissioning General Contractor Staff $1,929 $0 $0 $0 $251 $2,179 1.11 DGC HP Supplies $0 $128 $0 $0 $19 $147 1.12 SAFSTOR Surveillence and Maintenance $0 $0 $0 $388 $58 $446 Printed: 1/11/2010 12:39:34 PM Page 65 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Undistributed Subtotal $5,658 $1,473 $0 $2,191 $1,285 $10,607 SAFSTOR Pd 7 Subtotal $15,209 $1,546 $0 $2,191 $2,537 $21,485 Printed: 1/11/2010 12:39:34 PM Page 66 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description . Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 8 Dismantlement Site Modifications and Preparations Distributed 8.01 Revitalize Infrastructure and Repower Site $0 $0 $0 $27,957 $3,634 $31,591 8.02 Perform Post-SAFSTOR Baseline Radiation Survey $233 $88 $0 $0 $42 $363 8.03 Finalize Residual Radiation Inventory $37 $41 $0 $0 $10 $88 8.04 Select Shipping Casks and Obtain Shipping Permits $29 $0 $0 $0 $4 $33 8.05 Design, Specify, and Procure Special Items and Materials $782 $5,300 $0 $0 $791 $6,873 8.06 Modify Containment Access $300 $554 $0 $0 $111 $965 8.07 Construct New Change Rooms, Hot Laundry, In-Plant Laydown Areas $0 $869 $0 $0 $113 $982 8.08 Test Special Cutting and Handling Equipment and Train Operators $882 $145 $0 $0 $134 $1,161 8.09 Procure Non-Engineered Standard Equipment $0 $4,444 $0 $0 $578 $5,022 Distributed Subtotal $2,263 $11,441 $0 $27,957 $5,417 $47,078 Undistributed 1.01 Utility Staff $23,514 $0 $0 $0 $3,057 $26,571 1.02 Utility Staff HP Supplies $0 $810 $0 $0 $122 $932 1.03 Security Guard Force $1,799 $0 $0 $0 $270 $2,069 1.04 Insurance $0 $0 $0 $862 $129 $991 1.05 Property Taxes $0 $0 $0 $14 $2 $16 1.06 NRC Decommissioning Fees $0 $0 $0 $881 $132 $1,014 1.07 Materials and Services $0 $7,259 $0 $0 $1,089 $8,348 1.08 DAW Disposal $0 $0 $21 $0 $3 $24 1.09 Energy $0 $0 $0 $581 $87 $669 1.10 Decommissioning General Contractor Staff $14,702 $0 $0 $0 $1,911 $16,613 1.11 DGC HP Supplies $0 $693 $0 $0 $104 $797 Undistributed Subtotal $40,015 $8,762 $21 $2,338 $6,906 $58,044 Printed: 1/11/2010 12:39:34 PM Page 67 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equi pment Disposal Other Contingency Total SAFSTOR Pd 8 Subtotal $42,278 $220,203 $21 $30,295 $12,323 $105,122 Printed: 1/11/2010 12:39:34 PM Page 68 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 9 Major Component Removal Distributed 9.01 Remove, Package and Dispose of Non-Essential Systems $10,049 $2,322 $7,230 $0 $4,508 $24,109 9.02 Segment, Package and Dispose of Nuclear Steam Supply System $2,343 $923 $29,805 $0 $7,606 $40,677 9.03 Decon Shield Plugs, Pool Plugs and Stud Tensioners $37 $7 $142 .$0 $43 $229 9.04 Remove and Dispose of Spent Fuel Storage Racks $51 $234 $1,451 $0 $399 $2,136 9.05 Finalize Internals and Vessel Segmenting Details $18 $0 $0 $0 $4 $22 9.06 Reactor Vessel Insulation Removal and Disposal $104 $15 $Z14 $0 $109 $441 9.07 Segment, Package and Ship Reactor Internals $2,790 $950 $8,641 $0 $3,773 $16,153 9.08 Package and Ship Reactor Pressure Vessel $2,922 $1,073 $6,513 $0 $3,336 $13,843 9.09 Drain Dryer Separator Pool and Process Liquid Waste $0 $0 $0 $0 $0 $0 9.10 Removal and Disposal of Sacrificial Shield Wall . $219 $447 $830 $0 $344 $1,840 9.'11 Segment, Package and Dispose of Refueling Bridge $50 $9 $262 $0 $74 $395 9.12 Segment, Package and Dispose of Contaminated Decon Equipment and Tooling $22 $4 $131 $0 $36 $194 9.13 Remove, Package and Dispose of Remaining Active Plant Systems $3,210 $1,032 $1,407 $0 $1,299 $6,948 Distributed Subtotal $21,815 $7,016 $56,626 $0 $21,531 $106,987 Undistributed 1.01 Utility Staff $28,823 $0 $0 $0 $3,747 $32,570 1.02 Utility Staff HP Supplies $0 $1,094 $0 $0 $164 $1,258 1.03 Security Guard Force $2,566 $0 $0 $0 $385 $2,951 1.04 Insurance $0 $0 $0 $1,230 $184 $1,414 1.05 Property Taxes $0 $0 $0 $20 $3 $23 1.06 NRC Decommissioning Fees $0 $0 $0 $1,258 $189 $1,446 1.07 Materials and Services $0 $8,673 $0 $0 $1,301 $9,974 1.08 DAW Disposal $0 $0 $246 $0 $37 $282 1.09 Energy $0 $0 $0 $1,106 $166 $1,272 Printed: 1/11/2010 12:39:34 PM Page 69 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Altemative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.10 Decommissioning General Contractor Staff $28,276 $0 $0 $0 $3,676 $31,952 1.11 DGC HP Supplies $0 $1,514 $0 $0 $227 $1,741 Undistributed Subtotal $59,665 $11,281 $246 $3,614 $10,079 $84,883 SAFSTOR Pd 9 Subtotal $81,480 $18,297 $56,872 $3,614 $31,610 $191,870 Printed: 1/11/2010 12:39:34 PMP Page 70 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit I Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SAFSTOR Pd 10 Site Decontamination Distributed 10.01 Decon Reactor Building $2,761 $2,213 $4,493 $0 $2,177 $11,644 10.02 Decon Turbine Building $541 $768 $530 $0 $423 $2,262 10.03 Decon Radwaste Building $116 $144 $169 $0 $99 $528 10.04 Decon HPCI and RCIC Building $26 $39 $25 $0 $21 $110 10.05 Decon Administration Building $9 $5 $10 $0 $6 $30 10.06 Decon Off-Gas Retention Building $44 $17 $21 $0 $19 $100 10.07 Decon Low Level Radwaste Storage and Processing $208 $312 $255 $0 $178 $954 10.08 Decon Off-Gas Stack $52 $48 $142 $0 $56 $298 10.10 Remove Underground Storm Drains and Manholes $33 $25 $34 $0 $21 $114 10.11 Final Status Survey for Structures $5,188 $928 $0 $921 $915 $7,952 10.12 Final Status Survey for Land Areas $915 $54 $0 $0 $126 $1,094 10.13 Prepare Final Report of Dismantling Program $65 $3 $0 $0 $9 $76 Distributed Subtotal $9,958 $4,556 $5,679 $921 $4,050 $25,162 Undistributed 1.01 Utility Staff $19,014 $0 $0 $o $2,472 $21,486 1.02 Utility Staff HP Supplies $0 $1,258 $0 $0 $189 $1,447 1.03 Security Guard Force $2,193 $0 $0 $0 $329 $2,522 1.04 Insurance $0 $0 $0 $1,051 $158 $1,208 1.05 Property Taxes $0 $0 $0 $17 $3 $20 1.06 NRC Decommissioning Fees $0 $0 $0 $652 $98 $750 1.07 Materials and Services $0 $6,139 $0 $0 $921 $7,060 1.08 DAW Disposal $0 $0 $115 $0 $17 $132 1.09 Energy $0 $0 $0 $815 $122 $937 1.10 Decommissioning General Contractor Staff $16,941 $0 $0 $0 $2,202 $19,144 Printed: 1/11/2010 12:39:34 PM Page 71 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total 1.11 DGC HP Supplies $0 $720 $0 $0 $108 $827 Undistributed Subtotal $38.148 $8.117 $115 $2.535 $6619 $55.533 SAFSTOR Pd 1 Subtotal $48,106 $12,673 $5,794 $3,456 $10,669 $80,695 Printed: 1/11/2010 12:39:34 PM Page 72 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total A. License Termination Subtotal $255,523 $73,384 $74,470 $94,112 $80,649 $578,144 B. Spent Fuel Dry Pd 1 Fuel Pool Island.Design Distributed 11.01 Design Spent Fuel Support System Modifications $370 $6 $0 $0 $49 $425 11.02 Design Control Room Relocation $358 $5 $0 $0 $47 $411 11.03 Design Spent Fuel Storage Security Modifications $275 $4 $0 $0 $36 $315 Distributed Subtotal $1,003 $15 $0 $0 $132 $1,151 Undistributed 2.01 Utility Spent Fuel Staff $93 $0 $0 $0 $12 $106 Undistributed Subtotal $93 $0 $0 $0 $12 $106 Dry Pd 1 Subtotal $1,096 $15 $0 $0 $144 $1,257 Printed: 1/11/2010 12:39:34 PM Page 73 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total SF Cooling Dry Pd 2 Spent Fuel C and T!sfer to Dry Storage Distributed 12.01 Install Spent Fuel Pool System Modifications $119 $1,658 $0 $0 $231 $2,008 12.02 Implement Control Room Modifications $956 $1,434 $0 $0 $311 $2,701 12.03 Implement Spent Fuel Pool Security Modifications $500 $750 $0 $0 $163 $1,413 12.04 Purchase of Dry Storage Modules for Fuel Assemblies $0 $23,012 $0 $0 $3,452 $26,464 Distributed Subtotal $1,575 $26,854 $0 $0 $4,157 $32,586 Undistributed 2.01 Utility Spent Fuel Staff $2,049 $0 $0 $0 $266 $2,316 2.02 Utility Staff BP Supplies $0 $791 $0 $0 $119 $910 2.03 Fuel Pool Maintenance and Operation Staff $15,537 $0 $0 $0 $2,330 $17,867 2.05 Security Guard Force $26,769 $0 $0 $0 $4,015 $30,784 2.06 Insurance $0 $0 $0 $4,239 $636 $4,875 2.07 Spent Fuel Fees and Permits $0 $0 $0 $6,372 $956 $7,328 2.08 Energy $0 $0 $0 $1,432 $215 $1,647 2.09 Materials and Services $0 $13,124 $0 $0 $1,969 $15,093 2.10 Spent Fuel Maintenance $0 $0 $0 $999 $150 $1,149 Undistributed Subtotal $44.355 $13.915 $0 $13.042 $10656 $81.969 Dry Pd 2 Subtotal $45,930 $40,769 $0 $13,042 $14,813 $114,555 Printed: 1/11/2010 12:39:34 PM Page 74 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 3 Dry Storage During Dormancy Undistributed 2.01 Utility Spent Fuel Staff $33,420 $0 $0 $0 $4,345 $37,765 2.02 Utility Staff HP Supplies $0 $2,610 $0 $0 $391 $3,001 2.04 Additional Staff for Spent Fuel Shipping $6,453 $0 $0 $0 $968 $7,421 2.05 Security Guard Force $14,697 $0 $0 $0 $2,205 $16,902 2.06 Insurance $0 $0 $0 $5,239 $786 $6,025 2.07 Spent Fuel Fees and Permits $0 $0 $0 $12,324 $1,849 $14,173 2.08 Energy $0 $0 $0 $1,076 $161 $1,237 2.09 Materials and Services $0 $16,902 $0 $0 $2,535 $19,438 2.10 Spent Fuel Maintenance $0 $0 $0 $2,058 $309 $2,366 Undistributed Subtotal $54,570 $19,512 $0 $20,697 $13,549 $108,328 Dry Pd 3 Subtotal $54,570 $19,512 $0 $20,697 $13,549 $108,328 Printed: 1/11/2010 12:39:34 PM Page 75 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Dry Pd 4 ISFSI Decommissioning Distributed 14.01 Preparation and NRC Review of License Termination Plan $63 $0 $0 $101 $21 $186 14.02 Verification Survey of Horizontal Storage Modules $46 $22 $0 $0 $9 $77 14.03 Preparation of Final Report on Decommissioning and NRC Review $31 $0 $0 $60 $12 $102 14.04 Clean Demolition of ISFSI $1,103 $612 $1,514 $0 $481 $3,710 Distributed Subtotal $1,243 $634 $1,514 $161 $523 $4,075 Undistributed 2.01 Utility Spent Fuel Staff $687 $0 $0 $0 $89 $776 2.05 Security Guard Force $664 $0 $0 $0 $100 $764 2.08 Energy $0 $0 $0 $5 $1 $5 2.09 Materials and Services $0 $380 $0 $0 $57 $437 2.12 Decommissioning General Contractor Staff $409 $0 $0 $0 $61 $470 Undistributed Subtotal $1,760 $380 $0 $5 $308 $2,452 Dry Pd 4 Subtotal $3,003 $1,014 $1,514 $166 $831 $6,527 Printed: 1/11/2010 12:39:34 PM Page 76 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/20251 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total B. Spent Fuel Subtotal $104,599 '$61,310 $1,514 $33,905 $29,337 $230,667 C. Greenfield Grn Pd 1 Clean Building Demolition Distributed 15.01 Clean Building Demolition Equipment $0 $738 $0 $0 $170 $907 15.02 Demolish Low-Level Radwaste Building $2,288 $1,129 $204 $0 $584 $4,204 15.03 Demolish Turbine Building $2,607 $1,258 $151 $0 $648 $4,664 15.04 Demolish Data Acquisition and Technical Support Building $214 $142 $50 $0 $67 $472 15.05 Demolish Control and Administrative Buildings $571 $260 $58 $0 $142 $1,031 15.06 Demolish Guard Facility $91 $42 $8 $0 $22 $163 15.07 Demolish HPCI and RCIC Building $120 $135 $6 $0 $48 $309 15.08 Demolish Reactor Building $3,298 $1,836 $295 $0 $890 $6,319 15.09 Demolish Cooling Towers and Related Structures $533 $696 $185 $0 $253 $1,667 15.10 Demolish Training Center $97 $42 $10 $0 $23 $172 15.11 Demolish Plant Support Center $222 $159 $59 $0 $73 $514 15.12 Remove and Dispose of Underground Storage Tanks $18 $22 $0 $0 $7 $48 15.13 Demolish Off-Gas Stack $85 $45 $18 $0 $24 $172 15.14 Demolish Existing Waste Water Treatment Plant $13 $1 $3 $0 $2 $20 15.15 Demolish Remaining Structures $1,524 $2,042 $496 $0 $732 $4,794 Distributed Subtotal $11,681 $8,547 $1,543 $0 $3,685 $25,456 Undistributed 3.01 Utility Staff $3,765 $0 $0 $0 $489 $4,255 3.02 Security Guard Force $606 $0 $0 $0 $91 $697 3.03 Decommissioning General Contractor Staff $6,313 $0 $0 $0 $821 $7,133 3.04 Energy $0 $0 $0 $392 $59 $451 3.05 Insurance $0 $0 $0 $141 $21 $163 Printed: 1/11/2010 12:39:34 PM Page 77 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Undistributed Subtotal $10,684 $0 $0 $533 $1,481 $12,699 Grn Pd 1 Subtotal $22,365 $8,547 $1,543 $533 $5,166 $38,155 Printed: 1/11/2010 12:39:34 PM Page 78 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total Grn Pd 2 Site Restoration Distributed 16.01 Site Restoration Equipment $0 $103 $0 $0 $24 $127 16.02 Remove Temporary Structures $37 $30 $0 $0 $12 $78 16.03 Finish Grading and Re-Vegetate Site $376 $272 $0 $0 $111 $760 Distributed Subtotal $413 $405 $0 $0 $147 $965 Undistributed 3.01 Utility Staff $619 $0 $0 $0 $81 $700 3.02 Security Guard Force $154 $0 $0 $0 $23 $177 3.03 Decommissioning General Contractor Staff $1,113 $0 $0 $0 $145 $1,257 3.04 Energy $0 $0 $0 $2 $0 $3 3.05 Insurance $0 $0 $0 $36 $5 $41 Undistributed Subtotal $1,886 $0 $0 $38 $254 $2,178 Grn Pd 2 Subtotal $2,299 $405 $0 $38 $401 $3,143 Printed: 1/11/2010 12:39:34 PM Page 79 of 80

Table 4 Duane Arnold SAFSTOR, License Extension, Yucca Mountain Opening 2025 Scenario Number 4 License Status Extension Unit 1 Shut Down Date 2/21/2034 Decommissioning Alternative Safestor Fuel Pool Systems Modified Spent Fuel Alternative Dry Repository Opening Date: 1/1/2025 2008 Dollars in Thousands No Item Description Labor Equipment Disposal Other Contingency Total C. Greenfield Subtotal $24,664 $8,952 $1,543 $571 $5,567 $41,298 Scenario No. 4 Total $384,786 $143,646 $77,527 $128,588 $115,553 $850,109 Printed: 1/11/2010 12:39:34 PM Page 80 of 80

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Appendix E Annual Cash Flow Tables

Duane Arnold Annual Cost By Account 2008 Dollars in Thousands Scenario No 1 Prompt Dismantlement, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Year License Termination Spent Fuel Greenfield Total 2012 $103 $0 $0 $103 2013 $12,587 $1,257 $0 $13,844 2014 $48,264 $22,295 $0 $70,559 2015 $54,019 $25,934 $0 $79,953 2016 $68,770 $25,934 $0 $94,703 2017 $70,929 $25,934 $0 $96,863 2018 $70,929 $25,934 $0 $96,863 2019 $61,000 $7,050 $0 $68,050 2020 $54,128 $3,908 $0 $58,035 2021 $13,310 $3,908 $25,385 $42,603 2022 $5,496 $3,908 $15,346 $24,749 2023 $13,950 $3,908 $0 $17,858 2024 $13,950 $3,908 $0 $17,858 2025 $11,565 $3,948 $0 $15,513 2026 $0 $4,104 $0 $4,104 2027 $0 $4,104 $0 $4,104 2028 $0 $4,104 $0 $4,104 2029 $0 $4,104 $0 $4,104 2030 $0 $4,104 $0 $4,104 2031 $0 $4,104 $0 $4,104 2032 $0 $4,104 $0 $4,104 2033 $0 $4,104 $0 $4,104 2034 $0 $4,104 $0 $4,104 2035 $0 $4,104 $0 $4,104 2036 $0 $4,104 $0 $4,104 2037 $0 $4,104 $0 $4,104 2038 $0 $4,104 $0 $4,104 2039 $0 $4,104 $0 $4,104 2040 $0. $4,104 $0 $4,104 2041 $0 $4,104 $0 $4,104 2042 $0 $4,104 $0 $4,104 2043 $0 $4,104 $0 $4,104 2044 $0 $4,104 $0 $4,104 2045 $0 $4,104 $0 $4,104 2046 $0 $4,104 $0 $4,104 2047 $0 $4,104 $0 $4,104 2048 $0 $4,104 $0 $4,104 2049 $0 $4,104 $0 $4,104 2050 $0 $4,104 $0 $4,104 2051 $0 $4,104 $0 $4,104 2052 $0 $4,104 $0 $4,104 2053 $0 $4,900 $0 $4,900 2054 $o $4,777 $0 $4,777 Total $499,002 $278,300 $40,731 $818,033 Page 1 of 6

Duane Arnold Annual Cost By Account 2008 Dollars in Thousands Scenario No 2 SAFSTOR, Existing License, Yucca Mountain Opening 2025, Interim Waste Storage Year License Termination Spent Fuel Greenfield Total 2012 $90 $0 $0 $90 2013 $10,925 $1,257 $0 $12,182 2014 $44,630 $22,299 $0 $66,929 2015 $8,936 $25,939 $0 $34,875 2016 $1,790 $25,939 $0 $27,729 2017 $1,790 $25,939 $0 $27,729 2018 $1,790 $25,939 $0 $27,729 2019 $13,330 $7,027 $0 $20,357 2020 $3,795 $3,949 $0 $7,743 2021 $3,795 $3,949 $0 $7,743 2022 $3,795 $3,949 $0 $7,743 2023 $3,795 $3,949 $0 $7,743 2024 $3,795 $3,949 $0 $7,743 2025 $2,035 $3,949 $0 $5,984 2026 $1,448 $3,949 $0 $5,397 2027 $1,448 $3,949 $0 $5,397 2028 $1,448 $3,949 $0 $5,397 2029 $1,448 $3,949 $0 $5,397 2030 $1,448 $3,949 $0 $5,397 2031 $1,448 $3,949 $0 $5,397 2032 $1,448 $3,949 $0 $5,397 2033 $1,448 $3,949 $0 $5,397 2034 $1,448 $3,949 $0 $5,397 2035 $1,448- $3,949 $0 $5,397 2036 $1,448 $3,949 $0 $5,397 2037 $1,448 $3,949 $0 $5,397 2038 $1,448 $3,949 $0 $5,397 2039 $1,448 $3,949 $0 $5,397 2040 $1,448- $3,949 $0 $5,397 2041 $ 1,448 $3,949 $0 $5,397 2042 $1,448 $3,949 $0 $5,397 2043 $1,448 $3,949 $0 $5,397 2044 $1,448 $3,949 $0 $5,397 2045 $1,448 $3,949 $0 $5,397 2046 $1,448 $3,949 $0 $5,397 2047 $1,448 $3,949 $0 $5,397 2048 $1,448 $3,949 $0 $5,397 2049 $1,448 $3,949 $0 $5,397 2050 $1,448 $3,949 $0 $5,397 2051 $1,448 $3,949 $0 $5,397 2052 $1,448 $3,949 $0 $5,397 2053 $1,448 $4,749 $0 $6,197 2054 $1,620 $4,644 $0 $6,263 2055 $2,305 $0 $0 $2,305 2056 $2,305 $0 $0 $2,305 2057 $2,305 $0 $0 $2,305 2058 $2,305 $0 $0 $2,305 2059 $2,305 $0 $0 $2,305 2060 $2,305 $0 $0 $2,305 2061 $2,305 $0 $0 $2,305 2062 $2,305 $0 $0 $2,305 Page 2 of 6

2063 $2,305 $0 $0 $2,305 2064 $2,305 $0 $0 $2,305 2065 $2,305 $0 $0 $2,305 2066 $8,156 $0 $0 $8,156 2067 $12,229 $0 $0 $12,229 2068 $63,483 $0 $0 $63,483 2069 $79,252 $0 $0 $79,252 2070 $96,018 $0 $0 $96,018 2071 $81,018 $0 $0 $81,018 2072 $47,704 $0 $0 $47,704 2073 $18,639 $0 $20,552 $39,191 2074 $0 $0 $20.746 $20.746 Total $578,297 $274,041 $41,298 $893,636 Page 3 of 6

Duane Arnold Annual Cost By Account 2008 Dollars in Thousands Scenario No 3 Prompt Dismantlement, License Extension, Yucca Mountain Opening 2025 Year License Termination Spent Fuel Greenfield Total 2032 $103 $0 $0 $103 2033 $12,587 $1,257 $0 $13,844 2034 $48,234 $19,696 $0 $67,929 2035 $53,983 $22,910 $0 $76,894 2036 $76,852 $22,910 $0 $99,762 2037 $80,306 $22,910 $0 $103,217 2038 $80,306 $22,910 $0 $103,217 2039 $65,333 $6,619 $0 $71,952 2040 $55,135 $3,907 $0 $59,042 2041 $13,558 $3,907 $25,385 $42,850 2042 $0 $3,991 $15,346 $19,337 2043 $0 $4,104 $0 $4,104 2044 $0 $4,104 $0 $4,104 2045 $0 $4,104 $0 $4,104 2046 $0 $4,104 $0 $4,104 2047 $0 $4,104 $0 $4,104 2048 $0 $4,104 $0 $4,104 2049 $0 $4,104 $0 $4,104 2050 $0 $4,104 $0 $4,104 2051 $0 $4,104 $0 $4,104 2052 $0 $4,104 $0 $4,104 2053 $0 $4,104 $0 $4,104 2054 $0 $4,104 $0 $4,104 2055 $0 $4,104 $0 $4,104 2056 $0 $4,104 $0 $4,104 2057 $0 $4,104 $0 $4,104 2058 $0 $4,104 $0 $4,104 2059 $0 $4,104 $0 $4,104 2060 $0 $4,104 $0 $4,104 2061 $0 $4,104 $0 $4,104 2062 $0 $4,104 $0 $4,104 2063 $0 $4,104 $0 $4,104 2064 $0 $4,104 $0 $4,104 2065 $0 $4,104 $0 $4,104 2066 $0 $4,675 $0 $4,675 2067 $o $4.387 $0 $4.387 Total $486,398 $234,468 $40,731 $761,597 Page 4 of 6

Duane Arnold Annual Cost By Account 2008 Dollars in Thousands Scenario No 4 SAFSTOR, License Extension, Yucca Mountain Opening 2025 Year License Termination Spent Fuel Greenfield Total 2032 $90 $0 $0 $90 2033 $10,925 $1,257 $0 $12,182 2034 $46,090 $19,699 $0 $65,789 2035 $9,050 $22,914 $0 $31,964 2036 $1,789 $22,914 $0 $24,704 2037 $1,789 $22,914 $0 $24,704 2038 $1,789 $22,914 $0 $24,704 2039 $20,545 $6,605 $0 $27,150 2040 $1,593 $3,949 $0 $5,541 2041 $1,593 $3,949 $0 $5,541 2042 $1,593 $3,949 $0 $5,541 2043 $1,593 $3,949 $0 $5,541 2044 $1,593 $3,949 $0 $5,541 2045 $1,593 $3,949 $0 $5,541 2046 $1,593 $3,949 $0 $5,541 2047 $1,593 $3,949 $0 $5,541 2048 $1,593 $3,949 $0 $5,541 2049 $1,593 $3,949 $0 $5,541 2050 $1,593 $3,949 $0 $5,541 2051 $1,593 $3,949 $0 $5,541 2052 $1,593 $3,949 $0 $5,541 2053 $1,593 $3,949 $0 $5,541 2054 $1,593 $3,949 $0 $5,541 2055 $1,593 $3,949 $0 $5,541 2056 $1,593 $3,949 $0 $5,541 2057 $1,593 $3,949 $0 $5,541 2058 $1,593 $3,949 $0 $5,541 2059 $1,593 $3,949 $0 $5,541 2060 $1,593 $3,949 $0 $5,541 2061 $1,593 $3,949 $0 $5,541 2062 $1,593 $3,949 $0 $5,541 2063 $1,593 $3,949 $0 $5,541 2064 $1,593 $3,949 $0 $5,541 2065 $1,593 $3,949 $0 $5,541 2066 $1,593 $4,516 $0 $6,109 2067 $1,728 $4,270 $0 $5,997 2068 $2,291 $0 $0 $2,291 2069 $2,291 $0 $0 $2,291 2070 $2,291 $0 $0 $2,291 2071 $2,291 $0 $0 $2,291 2072 $2,291 $0 $0 $2,291 2073 $2,291 $0 $0 $2,291 2074 $2,291 $0 $0 $2,291 2075 $2,291 $0 $0 $2,291 2076 $2,291 $0 $0 $2,291 2077 $2,291 $0 $0 $2,291 2078 $2,291 $0 $0 $2,291 2079 $2,291 $0 $0 $2,291 2080 $2,291 $0 $0 $2,291 2081 $2,291 $0 $0 $2,291 2082 $2,291 $0 $0 $2,291 PageS5 of 6

2083 $2,291 $0 $0 $2,291 2084 $2,291 $0 $0 $2,291 2085 $2,291 $0 $0 $2,291 2086 $8,267 $0 $0 $8,267 2087 $12,428 $0 $0 $12,428 2088 $66,616 $0 $0 $66,616 2089 $84,924 $0 $0 $84,924 2090 $95,935 $0 $0 $95,935 2091 $73,366 $0 $0 $73,366 2092 $47,331 $0 $0 $47,331 2093 $11,251 $0 $25,713 $36,964 2094 $0 $0 $15.585 $15.585 Total $578,144 $230,667 $41,298 $850,109 Page 6 of 6

Decommissioning Cost Estimate Study Document No. 82A9634 for the Duane Arnold Energy Center Revision 1 Appendix F Detailed Annual Cash Flow Tables

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousand1s Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Scenario No 1 Unit No. Unit 1 Cost Account A. License Termination 2012 $91 $0 $0 $0 $92 $12 $103 2013 $11,087 $53 $0 $0 $11,140 $1,448 $12,587 2014 $28,733 $12,061 $167 $1,498 $42,460 $5,803 $48,264 2015 $31,564 $14,012 $194 $1,741 $47,512 $6,505 $54,019 2016 $35,332 $8,831 $12,501 $1,881 $58,545 $10,226 $68,770 2017 $35,770 $7,861 $14,590 $1,894 $60,114 $10,816 $70,929 2018 $35,770 $7,861 $14,590 $1,894 $60,114 $10,816 $70,929 2019 $32,158 $7,931 $9,718 $2,126 $51,935 $9,067 $61,000 2020 $29,639 $7,963 $6,383 $2,281 $46,270 $7,860 $54,128 2021 $7,288 $1,958 $1,570 $561 $11,378 $1,933 $13,310 2022 $157 $131 $3,792 $432 $4,512 $984 $5,496 2023 $397 $332 $9,626 $1,098 $11,452 $2,497 $13,950 2024 $397 $332 $9,626 $1,098 $11,452 $2,497 $13,950 2025 $329 $275 $7,980 $910 $9,494 $2,070 $11,565 Account Total $248,713 $69,602 $90,735 $17,413 $426,470 $72,535 $499,002 Page 1 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Cost Account B. Spent Fuel 2013 $1,096 $15 $0 $0 $1,112 $144 $1,257 2014 $7,898 $9,268 $0 $2,243 $19,409 $2,886 $22,295 2015 $9,187 $10,781 $0 $2,609 $22,577 $3,357 $25,934 2016 $9,187 $10,781 $0 $2,609 $22,577 $3,357 $25,934 2017 $9,187 $10,781 $0 $2,609 $22,577 $3,357 $25,934 2018 $9,187 $10,781 $0 $2,609 $22,577 $3,357 $25,934 2019 $3,017 $2,146 $0 $989 $6,152 $898 $7,050 2020 $1,989 $711 $0 $719 $3,419 $488 $3,908 2021 $1,989 $711 $0 $719 $3,419 $488 $3,908 2022 $1,989 $711 $0 $719 $3,419 $488 $3,908 2023 $1,989 $711 $0 $719 $3,419 $488 $3,908 2024 $1,989 $711 $0 $719 $3,419 $488 $3,908 2025 $1,992 $712 $0 $749 $3,454 $494 $3,948 2026 $1,989 $711 $0 $889 $3,590 $514 $4,104 2027 $1,989 $711 $0 $889 $3,590 $514 $4,104 2028 $1,989 $711 $0 $889 $3,590 $514 $4,104 2029 $1,989 $711 $0 $889 $3,590 $514 $4,104 2030 $1,989 $711 $0 $889 $3,590 $514 $4,104 2031 $1,989 $711 $0 $889 $3,590 $514 $4,104 2032 $1,989 $711 $0 $889 $3,590 $514 $4,104 2033 $1,989 $711 $0 $889 $3,590 $514 $4,104 2034 $1,989 $711 $0 $889 $3,590 $514 $4,104 2035 $1,989 $711 $0 $889 $3,590 $514 $4,104 2036 $1,989' $711 $0 $889 $3,590 $514 $4,104 2037 $1,989 $711 $0 $889 $3,590 $514 $4,104 2038 $1,989 $711 $0 $889 $3,590 $514 $4,104 Page 2 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total 2039 $1,989 $711 $0 $889 $3,590 $514 $4,104 2040 $1,989 $711 $0 $889 $3,590 $514 $4,104 2041 $1,989 $711 $0 $889 $3,590 $514 $4,104 2042 $1,989 $711 $0 $889 $3,590 $514 $4,104 2043 $1,989 $711 $0 $889 $3,590 $514 $4,104 2044 $1,989 $711 $0 $889 $3,590 $514 $4,104 2045 $1,989 $711 $0 $889 $3,590 $514 $4,104 2046 $1,989 $711 $0 $889 $3,590 $514 $4,104 2047 $1,989 $711 $0 $889 $3,590 $514 $4,104 2048 $1,989 $711 $0 $889 $3,590 $514 $4,104 2049 $1,989 $711 $0 $889 $3,590 $514 $4,104 2050 $1,989 $711 $0 $889 $3,590 $514 $4,104 2051 $1,989 $711 $0 $889 $3,590 $514 $4,104 2052 $1,989 $711 $0 $889 $3,590 $514 $4,104 2053 $2,228 $777 $657 $621 $4,283 $618 $4,900 2054 $2,042 $695 $1,218 $216 $4,172 $606 $4,777 Account Total $118,672 $79,495 $1,875 $42,859 $242,903 $35,397 $278,300 Page 3 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Cost Account C. Greenfield 2021 $14,919 $5,740 $1,029 $257 $21,946 $3,440 $25,385 2022 $9,356 $3,254 $514 $159 $13,284 $2,060 $15,346 Account Total $24,275 $8,994 $1,543 $416 $35,230 $5,500 $40,731 Page 4 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Unit Total $391,660 $158,091 $94,153 $60,688 $704,603 $113,432 $818,033 Scenario Total $391,660 $158,091 $94,153 $60,688 $704,603 $113,432 $818,033 Scenario No 2 Unit No. Unit 1 Cost Account A. License Termination 2012 $79 $0 $0 $0 $79 $10 $90 2013 $9,609 $58 $0 $0 $9,669 $1,257 $10,925 2014 $27,785 $9,441 $422 $1,404 $39,052 $5,576 $44,630 2015 $4,783 $1,714 $73 $1,240 $7,811 $1,125 $8,936 2016 $282 $108 $0 $1,170 $1,559 $230 $1,790 2017 $282 $108 $0 $1,170 $1,559 $230 $1,790 2018 $282 $108 $0 $1,170 $1,559 $230 $1,790 2019 $3,368 $1,381 $3,642 $2,942 $11,334 $1,995 $13,330 2020 $298 $178 $1,706 $996 $3,178 $617 $3,795 2021 $298 $178 $1,706 $996 $3,178 $617 $3,795 2022 $298 $178 $1,706 $996 $3,178 $617 $3,795 2023 $298 $178 $1,706 $996 $3,178 $617 $3,795 2024 $298 $178 $1,706 $996 $3,178 $617 $3,795 2025 $293 $128 $426 $895 $1,742 $293 $2,035 2026 $290 $111 $1 $859 $1,262 $186 $1,448 2027 $290 $111 $1 $859 $1,262 $186 $1,448 2028 $290 $111 $1 $859 $1,262 $186 $1,448 2029 $290 $111 $1 $859 $1,262 $186 $1,448 2030 $290 $111 $1 $859 $1,262 $186 $1,448 2031 $290 $111 $1 $859 $1,262 $186 $1,448 2032 $290 $111 $1 $859 $1,262 $186 $1,448 Page 5 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total 2033 $290 $111 $1 $859 $1,262 $186 $1,448 2034 $290 $111 $1 $859 $1,262 $186 $1,448 2035 $290 $111 $1 $859 $1,262 $186 $1,448 2036 $290 $111 $1 $859 $1,262 $186 $1,448 2037 $290 $111 $1 $859 $1,262 $186 $1,448 2038 $290 $111 $1 $859 $1,262 $186 $1,448 2039 $290 $111 $1 $859 $1,262 $186 $1,448 2040 $290 $111 $1 $859 $1,262 $186 $1,448 2041 $290 $111 $1 $859 $1,262 $186 $1,448 2042 $290 $111 $1 $859 $1,262 $186 $1,448 2043 $290 $111 $1 $859 $1,262 $186 $1,448 2044 $290 $111 $1 $859 $1,262 $186 $1,448 2045 $290 $111 $1 $859 $1,262 $186 $1,448 2046 $290 $111 $1 $859 $1,262 $186 $1,448 2047 $290 $111 $1 $859 $1,262 $186 $1,448 2048 $290 $111 $1 $859 $1,262 $186 $1,448 2049 $290 $111 $1 $859 $1,262 $186 $1,448 2050 $290 $111 $1 $859 $1,262 $186 $1,448 2051 $290 $111 $1 $859 $1,262 $186 $1,448 2052 $290 $111 $1 $859 $1,262 $186 $1,448 2053 $290 $111 $1 $859 $1,262 $186 $1,448 2054 $386 $141 $2 $883 $1,412 $208 $1,620 2055 $771 $261 $3 $972 $2,008 $297 $2,305 2056 $771 $261 $3 $972 $2,008 $297 $2,305 2057 $771 $261 $3 $972 $2,008 $297 $2,305 2058 $771 $261 $3 $972 $2,008 $297 $2,305 2059 $771 $261 $3 $972 $2,008 $297 $2,305 Page 6 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total 2060 $771 $261 $3 $972 $2,008 $297 $2,305 2061 $771 $261 $3 $972 $2,008 $297 $2,305 2062 $771 $261 $3 $972 $2,008 $297 $2,305 2063 $771 $261 $3 $972 $2,008 $297 $2,305 2064 $771 $261 $3 $972 $2,008 $297 $2,305 2065 $771 $261 $3 $972 $2,008 $297 $2,305 2066 $5,501 $635 $1 $1,046 $7,184 $972 $8,156 2067 $8,798 $894 $0 $1,094 $10,787 $1,441 $12,229 2068 $27,190 $11,899 $12 $16,937 $56,037 $7,445 $63,483 2069 $33,427 $12,247 $8,891 $13,971 $68,535 $10,717 $79,252 2070 $40,740 $9,149 $28,436 $1,879 $80,204 $15,816 $96,018 2071 $36,881 $8,627 $20,622 $2,031 $68,162 $12,858 $81,018 2072 $28,216 $7,433 $3,398 $2,352 $41,401 $6,306 $47,704 2073 $11,024 $2,904 $1,328 $919 $16,176 $2,464 $18,639 Account Total $257,032 $73,841 $75,855 $90,841 $497,578 $80,726 $578,297 Page 7 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Cost Account B. Spent Fuel 2013 $1,096 $15 $0 $0 $1,112 $144 $1,257 2014 $7,898 $9,272 $0 $2,243 $19,413 $2,886 $22,299 2015 $9,187 $10,785 $0 $2,609 $22,581 $3,357 $25,939 2016 $9,187 $10,785 $0 $2,609 $22,581 $3,357 $25,939 2017 $9,187 $10,785 $0 $2,609 $22,581 $3,357 $25,939 2018 $9,187 $10,785 $0 $2,609 $22,581 $3,357 $25,939 2019 $2,998 $2,119 $0 $1,015 $6,132 $895 $7,027 2020 $1,989 $711 $0 $754 $3,455 $494 $3,949 2021 $1,989 $711 $0 $754 $3,455 $494 $3,949 2022 $1,989 $711 $0 $754 $3,455 $494 $3,949 2023 $1,989 $711 $0 $754 $3,455 $494 $3,949 2024 $1,989 $711 $0 $754 $3,455 $494 $3,949 2025 $1,989 $711 $0 $754 $3,455 $494 $3,949 2026 $1,989 $711 $0 $754 $3,455 $494 $3,949 2027 $1,989 $711 $0 $754 $3,455 $494 $3,949 2028 $1,989 $711 $0 $754 $3,455 $494 $3,949 2029 $1,989 $711 $0 $754 $3,455 $494 $3,949 2030 $1,989 $711 $0 $754 $3,455 $494 $3,949 2031 $1,989 $711 $0 $754 $3,455 $494 $3,949 2032 $1,989 $711 $0 $754 $3,455 $494 $3,949 2033 $1,989 $711 $0 $754 $3,455 $494 $3,949 2034 $1,989 $711 $0 $754 $3,455 $494 $3,949 2035 $1,989 $711 $0 $754 $3,455 $494 $3,949 2036 $1,989 $711 $0 $754 $3,455 $494 $3,949 2037 $1,989 $711 $0 $754 $3,455 $494 $3,949 2038 $1,989 $711 $0 $754 $3,455 $494 $3,949 Page 8 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total 2039 $1,989 $711 $0 $754 $3,455 $494 $3,949 2040 $1,989 $711 $0 $754 $3,455 $494 $3,949 2041 $1,989 $711 $0 $754 $3,455 $494 $3,949 2042 $1,989 $711 $0 $754 $3,455 $494 $3,949 2043 $1,989 $711 $0 $754 $3,455 $494 $3,949 2044 $1,989 $711 $0 $754 $3,455 $494 $3,949 2045 $1,989 $711 $0 $754 $3,455 $494 $3,949 2046 $1,989 $711 $0 $754 $3,455 $494 $3,949 2047 $1,989 $711 $0 $754 $3,455 $494 $3,949 2048 $1,989 $711 $0 $754 $3,455 $494 $3,949 2049 $1,989 $711 $0 $754 $3,455 $494 $3,949 2050 $1,989 $711 $0 $754 $3,455 $494 $3,949 2051 $1,989 $711 $0 $754 $3,455 $494 $3,949 2052 $1,989 $711 $0 $754 $3,455 $494 $3,949 2053 $2,229 $778 $658 $486 $4,152 $598 $4,749 2054 $2,038 $693 $1,217 $108 $4,056 $589 $4,644 Account Total $118,651 $79,489 $1,875 $39,182 $239,199 $34,839 $274,041 Page 9 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Cost Account C. Greenfield 2073 $12,047 $4,604 $831 $287 $17,770 $2,783 $20,552 2074 $12,617 $4,348 $712 $284 $17,962 $2,784 $20,746 Account Total $24,664 $8,952 $1,543 $571 $35,732 $5,567 $41,298 Page 10 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Unit Total $400,347 $162,282 $79,273 $130,594 $772,509 $121,132 $893,636 Scenario Total $400,347 $162,282 $79,273 $130,594 $772,509 $121,132 $893,636 Scenario No 3 Unit No. Unit 1 Cost Account A. License Termination 2032 $91 $0 $0 $0 $92 $12 $103 2033 $11,087 $53 $0 $0 $11,140 $1,448 $12,587 2034 $28,516 $11,412 $1,124 $1,295 $42,349 $5,885 $48,234 2035 $31,312 $13,257 $1,307 $1,505 $47,382 $6,601 $53,983 2036 $35,251 $8,669 $19,243 $1,847 $65,009 $11,844 $76,852 2037 $35,705 $7,822 $22,215 $1,894 $67,635 $12,673 $80,306 2038 $35,705 $7,822 $22,215 $1,894 $67,635 $12,673 $80,306 2039 $32,109 $7,912 $13,405 $1,979 $55,406 $9,929 $65,333 2040 $29,629 $7,958 $7,450 $2,032 $47,073 $8,064 $55,135 2041 $7,286 $1,957 $1,832 $500 $11,575 $1,983 $13,558 Account Total $246,692 $66,864 $88,791 $12,944 $415,297 $71,111 $486,398 Page 11 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Cost Account B. Spent Fuel 2033 $1,096 $15 $0 $1,112 $144 $1,257 2034 $7,898 $7,008 $2,243 $17,149 $2,547 $19,696 2035 $9,187 $8,152 $2,609 $.P9,948 $2,963 $22,910 2036 $9,187 $8,152 $2,609 $19,948 $2,963 $22,910 2037 $9,187 $8,152 $2,609 $19,948 $2,963 $22,910 2038 $9,187 $8,152 $2,609 $19,948 $2,963 $22,910 2039 $3,017 $1,772 $989 $5,777 $841 $6,619 2040 $1,989 $711 $718 $3,419 $488 $3,907 2041 $1,989 $711 $718 $3,419 $488 $3,907 2042 $1,992 $712 $787 $3,492 $499 $3,991 2043 $1,989 $711 $889 $3,590 $514 $4,104 2044 $1,989 $711 $889 $3,590 $514 $4,104 2045 $1,989 $711 $889 $3,590 $514 $4,104 2046 $1,989 $711 $889 $3,590 $514 $4,104 2047 $1,989 $711 $889 $3,590 $514 $4,104 2048 $1,989 $711 $889 $3,590 $514 $4,104 2049 $1,989 $711 $889 $3,590 $514 $4,104 2050 $1,989 $711 $889 $3,590 $514 $4,104 2051 $1,989 $711 $889 $3,590 $514 $4,104 2052 $1,989 $711 $889 $3,590 $514 $4,104 2053 $1,989 $711 $889 $3,590 $514 $4,104 2054 $1,989 $711 $889 $3,590 $514 $4,104 2055 $1,989 $711 $889 $3,590 $514 $4,104 2056 $1,989 $711 $889 $3,590 $514 $4,104 2057 $1,989 $711 $889 $3,590 $514 $4,104 2058 $1,989 $711 $889 $3,590 $514 $4,104 Page 12 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total 2059 $1,989 $714" $0 $889 $3,590 $514 $4,104 2060 $1,989 $711 $0 $889 $3,590 $514 $4,104 2061 $1,989 $711 $0 $889 $3,590 $514 $4,104 2062 $1,989 $711 $0 $889 $3,590 $514 $4,104 2063 $1,989 $711 $0 $889 $3,590 $514 $4,104 2064 $1,989 $711 $0 $889 $3,590 $514 $4,104 2065 $1,989 $711 $0 $889 $3,590 $514 $4,104 2066 $2,178 $758 $525 $624 $4,085 $591 $4,675 2067 $1,960 $662 $989 $218 $3,830 $559 $4,387 Account Total $104,615 $61,315 $1,514 $37,188 $204,634 $29,834 $234,468 Page 13 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Cost Account C. Greenfield 2041 $14,919 $5,740 $1,029 $257 $21,946 $3,440 $25,385 2042 $9,356 $3,254 $514 $159 $13,284 $2,060 $15,346 Account Total $24,275 $8,994 $1,543 $416 $35,230 $5,500 $40,731 Page 14 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Unit Total $375,582 $137,173 $91,848 $50,548 $655,161 $106,445 $761,597 Scenario Total $375,582 $137,173 $91,848 $50,548 $655,161 $106,445 $761,597 Scenario No 4 Unit No. Unit 1 Cost Account A. License Termination 2032 $79 $0 $0 $0 $79 $10 $90 2033 $9,609 $58 $0 $0 $9,669 $1,257 $10,925 2034 $27,773 $9,452 $1,608 $1,404 $40,238 $5,846 $46,090 2035 $4,698 $1,686 $271 $1,239 $7,895 $1,154 $9,050 2036 $282 $108 $0 $1,170 $1,559 $230 $1,789 2037 $282 $108 $0 $1,170 $1,559 $230 $1,789 2038 $282 $108 $0 $1,170 $1,559 $230 $1,789 2039 $3,157 $1,249 $9,828 $2,942 $17,177 $3,369 $20,545 2040 $291 $111 $1 $984 $1,388 $205 $1,593 2041 $291 $111 $1 $984 $1,388 $205 $1,593 2042 $291 $111 $1 $984 $1,388 $205 $1,593 2043 $291 $111 $1 $984 $1,388 $205 $1,593 2044 $291 $111 $1 $984 $1,388 $205 $1,593 2045 $291 $111 $1 $984 $1,388 $205 $1,593 2046 $291 $111 $1 $984 $1,388 $205 $1,593 2047 $291 $111 $1 $984 $1,388 $205 $1,593 2048 $291 $111 $1 $984 $1,388 $205 $1,593 2049 $291 $111 $1 $984 $1,388 $205 $1,593 2050 $291 $111 $1 $984 $1,388 $205 $1,593 2051 $291 $111 $1 $984 $1,388 $205 $1,593 2052 $291 $111 $1 $984 $1,388 $205 $1,593 Page 15 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total 2053 $291 $111 $1 $984 $1,388 $205 $1,593 2054 $291 $111 $1 $984 $1,388 $205 $1,593 2055 $291 $111 $1 $984 $1,388 $205 $1,593 2056 $291 $111 $1 $984 $1,388 $205 $1,593 2057 $291 $111 $1 $984 $1,388 $205 $1,593 2058 $291 $111 $1 $984 $1,388 $205 $1,593 2059 $291 $111 $1 $984 $1,388 $205 $1,593 2060 $291 $111 $1 $984 $1,388 $205 $1,593 2061 $291 $111 $1 $984 $1,388 $205 $1,593 2062 $291 $111 $1 $984 $1,388 $205 $1,593 2063 $291 $111 $1 $984 $1,388 $205 $1,593 2064 $291 $111 $1 $984 $1,388 $205 $1,593 2065 $291 $111 $1 $984 $1,388 $205 $1,593 2066 $291 $111 $1 $984 $1,388 $205 $1,593 2067 $381 $139 $1 $984 $1,505 $222 $1,728 2068 $763 $258 $2 $972 $1,996 $295 $2,291 2069 $763 $258 $2 $972 $1,996 $295 $2,291 2070 $763 $258 $2 $972 $1,996 $295 $2,291 2071 $763 $258 $2 $972 $1,996 $295 $2,291 2072 $763 $258 $2 $972 $1,996 $295 $2,291 2073 $763 $258 $2 $972 $1,996 $295 $2,291 2074 $763 $258 $2 $972 $1,996 $295 $2,291 2075 $763 $258 $2 $972 $1,996 $295 $2,291 2076 $763 $258 $2 $972 $1,996 $295 $2,291 2077 $763 $258 $2 $972 $1,996 $295 $2,291 2078 $763 $258 $2 $972 $1,996 $295 $2,291 2079 $763 $258 $2 $972 $1,996 $295 $2,291 Page 16 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total 2080 $763 $258 $2 $972 $1,996 $295 $2,291 2081 $763 $258 $2 $972 $1,996 $295 $2,291 2082 $763 $258 $2 $972 $1,996 $295 $2,291 2083 $763 $258 $2 $972 $1,996 $295 $2,291 2084 $763 $258 $2 $972 $1,996 $295 $2,291 2085 $763 $258 $2 $972 $1,996 $295 $2,291 2086 $5,498 $634 $1 $1,148 $7,281 $986 $8,267 2087 $8,798 $894 $0 $1,267 $10,960 $1,468 $12,428 2088 $27,323 $12,594 $13 $18,875 $58,805 $7,811 $66,616 2089 $35,159 $11,995 $13,252 $12,439 $72,845 $12,079 $84,924 2090 $40,740 $9,149 $28,436 $1,807 $80,132 $15,805 $95,935 2091 $34,948 $8,360 $16,780 $1,912 $62,001 $11,367 $73,366 2092 1$28,216 $7,433 $3,398 $2,027 $41,076 $6,258 $47,331 2093 $6,707 $1,767 $808 $482 $9,764 $1,488 $11,251 Account Total $255,523 $73,384 $74,470 $94,112 $497,497 $80,649 $578,144 Page 17 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Yýear Labor Mat. & Equip. Waste Other Subtotal Contingency Total Cost Account B. Spent Fuel 2033 $1,096 $15 $0 $0 $1,112 $144 $1,257 2034 $7,898 $7,011 $0 $2,243 $17,152 $2,547 $19,699 2035 $9,187 $8,155 $0 $2,609 $19,951 $2,963 $22,914 2036 $9,187 $8,155 $0 $2,609 $19,951 $2,963 $22,914 2037 $9,187 $8,155 $0 $2,609 $19,951 $2,963 $22,914 2038 $9,187 $8,155 $0 $2,609 $19,951 $2,963 $22,914 2039 $2,998 $1,752 $0 $1,015 $5,765 $840 $6,605 2040 $1,989 $711 $0 $754 $3,455 $494 $3,949 2041 $1,989 $711 $0 $754 $3,455 $494 $3,949 2042 $1,989 $711 $0 $754 $3,455 $494 $3,949 2043 $1,989 $711 $0 $754 $3,455 $494 $3,949 2044 $1,989 $711 $0 $754 $3,455 $494 $3,949 2045 $1,989 $711 $0 $754 $3,455 $494 $3,949 2046 $1,989 $711 $0 $754 $3,455 $494 $3,949 2047 $1,989 $711 $0 $754 $3,455 $494 $3,949 2048 $1,989 $711 $0 $754 $3,455 $494 $3,949 2049 $1,989 $711 $0 $754 $3,455 $494 $3,949 2050 $1,989 $711 $0 $754 $3,455 $494 $3,949 2051 $1,989 $711 $0 $754 $3,455 $494 $3,949 2052 $1,989 $711 $0 $754 $3,455 $494 $3,949 2053 $1,989 $711 $0 $754 $3,455 $494 $3,949 2054 $1,989 $711 $0 $754 $3,455 $494 $3,949 2055 $1,989 $711 $0 $754 $3,455 $494 $3,949 2056 $1,989 $711 $0 $754 $3,455 $494 $3,949 2057 $1,989 $711 $0 $754 $3,455 $494 $3,949 2058 $1,989 $711 $0 $754 $3,455 $494 $3,949 Page 18 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total 2059 $1,989 $711 $0 $754 $3,455 $494 $3,949 2060 $1,989 $711 $0 $754 $3,455 $494 $3,949 2061 $1,989 $711 $0 $754 $3,455 $494 $3,949 2062 $1,989 $711 $0 $754 $3,455 $494 $3,949 2063 $1,989 $711 $0 $754 $3,455 $494 $3,949 2064 $1,989 $711 $0 $754 $3,455 $494 $3,949 2065 $1,989 $711 $0 $754 $3,455 $494 $3,949 2066 $2,177 $758 $524 $489 $3,947 $570 $4,516 2067 $1,965 $663 $990 $109 $3,728 $544 $4,270 Account Total $104,599 $61,310 $1,514 $33,905 $201,330 $29,337 $230,667 Page 19 of 21

Duane Arnold Energy Center Detailed-Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Cost Account C. Greenfield 2093 $15,072 $5,760 $1,040 $359 $22,232 $3,481 $25,713 2094 $9,592 $3,192 $503 $212 $13,500 $2,086 $15,585 Account Total $24,664 $8,952 $1,543 $571 $35,732 $5,567 $41,298 Page 20 of 21

Duane Arnold Energy Center Detailed Annual Cost 2008 Dollars in Thousands Year Labor Mat. & Equip. Waste Other Subtotal Contingency Total Unit Total $384,786 $143,646 $77,527 $128,588 $734,559 $115,553 $850,109 Scenario Total $384,786 $143,646 $77,527 $128,588 $734,559 $115,553 $850,109 Page 21 of 21

ENCLOSURE4 Affidavit of Proprietary Information 2 Pages Follow

NextEra Energy Duane Arnold, LLC Affidavit Required by 10 CFR 2.390 NextEra Energy Duane Arnold, LLC AFFIDAVIT I, Christopher R. Costanzo, state as follows:

(1) I am Vice President, Duane Arnold Energy Center, NextEra Energy Duane Arnold, LLC, and have the responsibility for reviewing the information described in paragraph (2) that is sought to be withheld.

(2) The information sought to be withheld is a Settlement Agreement ("Agreement")

between the United States Government and NextEra Energy Duane Arnold, LLC.

The Agreement concluded years of litigation concerning the Department of Energy's breach of its contract to accept and dispose of spent nuclear fuel and high-level waste from the Duane Arnold Energy Center and the FPL and NextEra Energy Resources nuclear fleet.

(3) Several additional companies are also parties to the Agreement, including Florida Power & Light Co., NextEra Energy Seabrook, LLC, NextEra Energy Point Beach, LLC, several joint owners of Seabrook Station and a former owner of the Duane Arnold Energy Center. These additional parties, to the best of my knowledge and belief, maintain an interest in its confidentiality.

(4) To the best of my knowledge and belief, the United States Government has maintained the confidentiality of the Agreement, with the exception of specific portions that it filed with the United States Court of Federal Claims in the course of litigation involving Canal Electric Company. A copy of the redacted version of the Agreement filed by the Government in that case is included with this submittal and represents the portion that is publicly available and which NextEra does not seek to be protected from public disclosure under 10 CFR 2.390.

(5) In making this application for the withholding of confidential information of which it is the owner, NextEra relies upon the exemption from disclosure set forth in the Freedom of Information Act ("FOIA"), 5 USC Sec. 552(b)(4), and NRC regulations 10 CFR 9.17(a)(4), and 2.390(a)(4) for confidential "commercial or financial information" (Exemption 4). The material for which exemption from disclosure is here sought is confidential commercial and financial information.

(6) To address 10 CFR 2.390(b)(4), the information sought to be withheld is being submitted to NRC in confidence. The information is ofa sort customarily held in confidence by NextEra, and is in fact so held. The information sought to be withheld has, to the best of my knowledge and belief, consistently been held in confidence by NextEra, no public disclosure has been made, and it is not available in public sources, Page 1 of2

except as described in paragraph (4). All disclosures to third parties, including any required transmittals to NRC or other regulatory bodies, have been made, or must be made, pursuant to regulatory provisions or confidentiality agreements that provide for maintenance of the information in confidence.

(7) Public disclosure of the information sought to be withheld is likely to cause substantial harm to NextEra's competitive position. The value of the information goes beyond the actual text of the Agreement and includes the significant legal and business resources expended in the course of settlement negotiations that culminated in the Agreement. Making such information available to competitors without their having been required to undertake a similar expenditure of resources would unfairly provide competitors with a windfall, and thus deprive NextEra of the opportunity to exercise its competitive advantage gained through the Agreement.

(8) The Agreement involves several additional parties, including the United States Government and other private parties who are not affiliated with FPL or NextEra. As a result, the public disclosure of the information sought to be withheld could potentially cause substantial harm to these parties, as well.

I declare under penalty of perjury that the foregoing affidavit and the matters stated therein are true and correct to the best of my knowledge, information, and belief.

Executed on this 1 5 th day of February, 2010 Christopher R. Costanzo Vice President, Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC Page 2 of 2

ENCLOSURE6 Redacted Version of Settlement Agreement 6 Pages Follow

Case 1:04-cv-00035-RHH Document 78 Filed 09/18/2009 Page 30 of 36 SE TTLEM KENT AGREEMENT F. Recitals.

For tbh purpose of disposing of Plaiyntiffs' claims, without any fart*erjudicial proceedings and without them being any trial or adjudication of an& issue of law or fact, and without constituting an admission of liability on the part of the United States, mad for no other purpose, the parties stipulate and agree as follows:

A. "Plaintiffs" for these purposes are Florida Power & Liglht Company, FPL

- Energy Seabrook,.LLC, Massachusetts Municipal Wholesale Electric -Company, Taunton Municipal Lighting Plant, Hudson Light and Power Depautment, FPL Energy Point Beach, LLC, FPL Energy Duane Arnold, LLC, and Interstate Power and Light Company and their direct or indirect wholly-owned subsidiaries or affiliates. (Unless the context requires otherwise, the singular shall include the plural, and vice versa.) This Agreement shall inure to the benefit of, and be assignable to, successors or affiliates of Plaintiffs, or other parties to whom the Standard Contracts (as identified below) are assigned, B. Plaintiffs arc the Purchasers under six Standard Contracts with the United States Department of Energy (DOE) for the acceptance of spent nuclear fuel and high level waste ("SNF/HLW") wider the Nuclear Waste Poliy Act, the material terms of which are reproduced at 10 C.F.R. § 961.21, and which are nmnbered DE-CR01 -

83NE44383, DECRO01-83NE44471, DE-CR01-83NE44472, DE-C.R0 -86RWI00 II, DE-CROI -83NE44425, and DE-CROI -83NE44390 (for these purposes, the "Contracts").

C. The Contracts cover the Turkey Point Unit 3 and Turkey Point Unit 4, St.

Lucie Unit I and St, Lucie Unit 2, Seabrook Unit 1, Point Beach Nuclear Plant, Units I and 2, and Duane Arnold Elifergy Center (for these purposes, the "Sites").

1 A9

Case 1:04-cv-00035-RHH Document 78 Filed 09/18/2009 Page 31 of 36 GovernMent was mistaken about an existing mnateyja fact that constitued a basic asswnption underlying this Agreepnent, K Othe'prc'oisiois.

A.

I0 A10

Case 1:04-cv-00035-RHH Document 78 Filed 09118/2009 Page 32 of 36 D. As part of and to effectuate this settlement, the Government exercises its sole discretion to accept the assiginent of claims that the plaintiff in Canal Eleotric Co.

.*., it-U~n te, No, 04-0035C (Fed, Cf.), has purported to make to FPL Energy Scabrook, LLC, to the extent that the Department of Energy and/or the Department of Justice have been made aware of those claims through the plaintiff's complaint in the Canal Electric case and have been made aware of the assignment through the assigimecnt provisions in the Purehase and Sale Agreement among North Atlantic Energy Corporation, The United Illuminating Company, Great Bay Power Corporation, New England Power Company, The Con~nectiout Power & Light Company, Cwaal Electric Company, Little Bay Power Corporation, New H-mnpshire Electric Cooperative, Inc.,

North Atlantic. Energy Service Corporation, and FPL Energy Seabrook, LLC, dated April 13, 2002. FPL Energy Seabrook, LLC, agrees that the claims asserted by Canal Electric 11 All

Case 1:04-cv-00035-RHH Document 78 Filed 09/18/2009 Page 33 of 36 Company in the Canal Electric, case Jack merit and that it Nwill not seek to Yecover any damages fiom the Govermnent based upon those claims. To the extent that any court of law finds that the Governiment's acceptance of this assigi)mnmt is void or otberwise invalid, and to the extent that the Government is obligated to pay Canal Electric Company or its successors any damnages arising out of the Canal Electric, case, FPL Energy Seabrook, LLC, agrees to indemnify the United States for any amounts that the Government pays upon those claims pursuant to the tenus of this agreement.

E.

F.

12 A12

'4, Case 1:04-cv-00035-RHH Document 78 Filed 09/18/2009 Page 34 of 36 I

1 AGREED TO:

FOR ThE GOVERNMENT:

EANNEE. DAVIDSON Date/

biector Commercial Litigation Branch, Civil Division U.S. Depatlment of Justice 1100 L Street, N.W.

Attn: Classification Unit 8th Floor Washington, D.C. 20530 AUTHORIZED REPRESENTATIVE OF THE ATTORNEY GENERAL FOR THE PLAINTIFFS:

ALEX D. TOMAS ~ 7 PILLSBURY, WIN?1IROP, SHAW, PITTMAN, LLP Dat 1650 Tysons Blvd.

Suite 1400 McIeIe Virginia 22102 ATTORNEY AND AUTHORIZED REPRESENTATIVE OF FLORMDA POWER AND LIGHT COMPANY FPL ENERGY SEABROOK, LLC FPL ENERGY DUANE ARNOLD, LLC FPL ENERGY POINT BEACH, LLC 13 A13

Case 1:04-cv-00035-RHH Document 78 Filed 09/18/2009 Page 35 of 36

)

Date.

XDFA9 ORGA S & BOCItJS LLP 1111 eInnsylvania Ave., N.W.

Washington, D.C. 20004 ATTORNEY AND AUTHORIZED REPRESENTATIVE OF INTERSTATE POWER AND LlGIGHT COMPANY Datd FERRITE S BBO & RODOPHELE, PC 125 Hfigh ect Boston, Massachusetts 02110 ATTORNEY AND AUTHORIZED REPRESENTATIVE OF MASSACHUSETTS ML1NICIPAL WHOLESALE ELECTRIC COMPANY AND HUDSON LIGHT AND POWER DEPARTMENT ROBDE 6O.FUNKY Dtte 58 Tremont Street P.O. Box 628 Taunton, Massachusetts 02780 ATTORNEY AND AUTHORIZED REPRESENTATIWE OF TAUNTON MUNICIPAL LIGHTING PLANT 14 A14