ML20149H437

Lists Technical Monitor Assignments for Decommissioning Technical Support Contract W/Cnwra.W/Task Order Statement of Work & Technical Proposal for Task

ML20149H437
Person / Time
Issue date:	06/18/1997
From:	Nelson R NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To:	Bradbury J, Person L, Pittiglio L NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
CON-FIN-J-5156, CON-NRC-02-97-001, CON-NRC-2-97-1 NUDOCS 9707240391
Download: ML20149H437 (51)

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NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. M55 0001

\ / June 18, 1997 MEMORANDUM TO: Those on Attached List .

FROM: Robert A. Nelson. Chief A Low-Level Waste and Regul to y' Issues Section Low-Level Waste and Decommissioning Projects Branch Division of Waste Management Office of Nuclear Material Safety and Safeguards

SUBJECT:

TECHNICAL MONITOR ASSIGNMENTS FOR DECOMMISSIONING TECHNICAL SUPPORT CONTRACT WITH THE CENTER FOR NUCLEAR WASTE REGULATORY ANALYSIS The Center for Nuclear Waste Regulatory Analysis was recently awarded a task order contract for Technical Assistance for Reviewing Licensee Submittals Concerning Decommissioning (FIN J5156). Three task orders were funded with the award. These task orders and the associated technical monitors are identified below.

Contract Project Officer: Daniel Huang NMSS/PMDA/PMRM Contract Technical Monitor: LeRoy Person, NMSS/DWM/LLDP Task Technical Monitors j Monitor JskNo. Title 1 Groundwater Issues at Westingnouse Mark Roberts, RI, DNMS j Waltz Mill Facility 2 Performance Assessment Analysis in Larry Pittiglio.  !

Support of the Jefferson Proving NMSS/DWM/LLDP Ground Environmental Impact Statement Development j 4 Modeling of Leach Processes at John Bradbury NMSS/ ,

Decommissioning Sites DWM/ENGB A copy of the associated Task Order Statement of Work is attached along with the Center's-technical proposal for this task.

The Task-Monitors will be responsible for: (1) monitoring the progress of the contractor's effort: _( 2) conducting the technical review of contractor deliverables; (3) providing technical direction when required within the scope of work: aqd(4)providinginputtotheContactTechnicalMonitorforthe ,

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Attached List for Memorandum Dated June 18, 1997 LeRoy Person Senior Materials Engineer Low-Level Waste and Decommissioning Projects Branch Division of Waste Management. NMSS

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Larry Pittiglio. Project Manager Low-Level Waste and Decommissioning Projects Branch Division of Waste Management. NMSS John Bradbury Geochemist Engineering and Geosciences Branch Low-Level Waste and Decommissioning Projects Branch Division of Waste Management. NMSS Mark Roberts. Senior Health Physicist Decommissioning and Laboratory Branch Division of Nuclear Materials Safety. RI

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Those on Attach'ed. List June 18, 1997 review of the Monthly Letter Status Reports (MLSR). The preferred format'for

.-the MLSR review is provided as Attachment 3.

-If you have any questions' concerning this assignment, please call me at.

=(301) 415-7298 or Roy Person at (301) 415-6701.

Attachments:

.1. Task Order Statement of Work 2 Technical Proposal.

3. MLSR Review Format TICKET: N/A- .

DJSTRIBUTION: iCent'ral File LLDP r/f NMSS r/f KStablien DBrooks .TCJohnson RBellamy DHuang BMeehan JHickey PUBLIC is recelw a copy of this doctment in ammLL box on "0FC:" line anter: "C" = copy without attachment / enclosure; "E" " Copy with attadment/enetoeure; "N*

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NAME 'IkYe#rson i[u'd8g RNelbn Sickey DATE 6 //@/97 (//8/97 [//0/97 [/ /(/97 0FFICIAL RECORD COPY 1 ACNW: YES- NO X Category: . Proprietary or CF Only IG : YES NO X

- LSS . YES NO X Delete file after distribution: Yes No X I

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s Those on' Attached List June 18, 1997 ,

.l review of the Monthly Letter Status Reports (MLSR). The preferred format for the MLSR review is provided.as Attachment 3.

If you have any questions concerning this assignment, please call me at ,

(301) 415-7298 or Roy Person at (301) 415-6701. l Attachments:

1. Task Order Statement of Work

2. Technical Proposal 3.' MLSR Review Format TICKET: N/A DISTRIBUTIOS: Central File .LLDP r/f NMSS r/f KStablien DBrooks TCJohnson RBellamy . DHuang BMeehan JHickey PUBLIC  !

Tm receive a copy of this document in ammLL box on =0FC:= Line enter: =c= = copy without attachment / enclosure; "E" = copy with j attachment /enctcoure; "Na = No copy i Path & File Name: S:\DWM\LLDP\RAN\ CENTER.TM OFC' LLDP, PMDA _ C '//

LLDP /) / Ld t) i NAME 'INErson Nu$$g RNelbn Mickey DATE 6 //9/97 (/N/97 [//0/97 [/if/97 l OFFICIAL RECORD COPY

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a Those on Attached List . .

review of the Monthly Letter Status Reports (MLSR). The preferred format for the MLSR review is provided as Attachment 3.

If you have any questions concerning this assignment, please call me at (301) 415-7298 or Roy Person at (301) 415-6701.

Attachments:

1. Task Order Statement of Work

2. Technical Proposal

3. MLSR Review Format i

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3 DESCRIPTION OF ACTIVITIES'

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Descriptions of the proposed activities are subdivided into two major task areas in a manner consistent l with section C.4.0 of the RFP; Section 3.1, " Technical Assistance in Suppon of Decommissioning," ,

. contains descriptions of task orders 01,02,03, and 05. Section 3.2, " Modification of Decommissioning j

.Models and Programs and imatigation of Geological and Hydrological Data and Transport Assumptions l

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.to Improve Pathway Analysis and Dose Assessment," contains only task order 04. The RFP description for task order 04 contained in the section labeled " Initial Task Orders for Decommissioning" notes task l j

order 04 is a' level of effort type.of task order. It is anticipated that task orders issued under a contract "

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for the. decommissioning work will be cost plus fixed fee completion type task orders with the exception of task order 04 which will be cost plus fixed fee level of effort. , l 3.1 TECHNICAL ASSISTANCE IN SUPPORT OF DECOMMISSIONING

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. Task orde s 01,02,03, and 05 request the CNWRA provide technical assistance to the NRC for evaluations of licensee submittals for specific ;ites where regulatory actions are required as part of l l

the decommissioning process, described in general in section 1. Throughout the h.....inioning process,

' the licersee must document the use of planned procedures and activities and submit sufficient information l to demonstrate that (i) radiological contamination on site has been adequately identified and quantified

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1- (characterized), (ii)'a reasonable effort has been made to eliminate residual radiologicsl contamination, I (iii) contaminated material has been properly disposed, and (iv) the site is suitable for release in accordance with the NRC requirements implementing NEPA, including 10 CFR Part 51.

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Specific task orders in the RFP request the CNWRA review certain technical sections of licensee submittals containing information on accontanunation and decommissioning 'of contaminated sites.

Guidance from Commission regulatus, the NRC " Standard Review Plan for Decommissioning Plans" (FC-90-2), other applicable starr!4ro review plans, regulatory guides, and the NRC policy directives will be used to manage the CF#RA work. Task order 02 requests technical assistance to support a '

. performance analysis to determine compliance with 10 CFR Part 51 and other NRC regulatory

- requirements. Work requested under task orders 01,03, and 05 will culminate in development of the CNWRA input to SERs for each of three sites following a Feneral sequence of(i) develop familiarity with pertinent regulatory -. ,lechnical background; (ii) parthipate in orie or more site visits; (iii) review i licensee SCP, SCR, and associated technical . documents; (iv) determine adequacy of the SCR and identify additional data necessary for the NRC to make required determinations; (v) evaluate licensee responses  !

I to the NRC request (s) for additional data; and (vi) prepare input to draft and f' mal SERs. The CNWRA ,

reports delivered to the NRC will result from these activities.

. The qualifying term input is used in this proposal with regard to SERs and cert. tin other CNWRA products to indicate the NRC has the ultimate responsibility for development and release of the subject documents; the CNWRA proposes to provide technical auistance to support that NRC activity.

The CNWRA recognizes the desired efficiency to the NRC of products that require minimal revision ardi reformatting to fulfill the NRC purposes. Hence, deliverables will be developed in a manner consistent  ;

with the NRC guidance and accepted pracuces for *iag reviews and producing resultant hunank.

Following is a summary of technical assistance activities included in the scope of work and the CNWRA approach to conduct the work.

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.t ' t Review Decommissioning Plans' If decommis5i oning procedures have not been previously approved by the Commission or

.if required by license condition, a DP_ must be submitted by the licensee before initiating

. decommissioning. The objective of the DP is to describe the activities and procedures that r

the licensee intends to undertake to remove residual radioactive material attributable to

. licensed activities at the facility to levels that meet the NRC criteria. The NRC guidance on the' format and content of DPs is provided.in " Format and Content Regulatory Guide for l '

Decommissioning Plans" (Regulatory Guide 3.65). Review of the decommissioning plan will' follow the NRC written guidance and may include examination of the (i) licensee proposed l d% ssioning i activities, decontammation methods and other h e hioning alternatives

. considered; (ii) decommissioning schedule to ensure . timely completion; (iii)' facility .

' operating history and radiological status of the site; (iv) the radioactive waste management program and the toxic, hazardous, or mixed waste progrim; (v) radiological health and ,

safety plans; (vi) the ALARA program; (vii) emergency response programs; l

- (viii) radiological accident analysis; (ix) the QA/ quality control program; and (x) estimates of decommissioning cost for unusual and complex procedures. The CNWRA will review the

• DP. and if adequate, will indicate this in a letter report as input to an SER that provides the -

basis for the fmding of adequacy,' The CNWRA input to a fmal SER will M prepared in accordance with the NRC " Standard Review Plan for Decommissioning Plans" (FC-90-2) .

unless otherwise requested by the NRC TM. If the DP is inadequate in any section, the l' CNWRA will inform the NRC TM and the cognizant NRC decommissioning site PM of the

. deficiencies and document these for the final SER indicating tile deficiency significance, j

decision basis, and suggested approach to resolution. The CNWRA input to SERs will also *

. identify any open issues.

• Evaluate Site Characterization Reports

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'I'he NRC requirements for decommissioning require that the proposed'DP include "a description of the conditions of the site or separate building or outdoor area sufficient to-evaluate the acceptability of the p!an " Licensees can develop this information with ,

institutional knew 4dge about radioactivi. material used at the facility, by perSmung a site L

characterization survey, or by combination of these two methods. The objectives of site characterization are to determine the type and extent of radiological coomination of l structures, residues, and environmental media (including rate of migrathn) and to determine environmental conditions that could affect the rate and directions of radionuclide transport

- and potential human and environmental exposures to radionuclides. Prior to initiating site '

characterization surveys, some licensees may be required to submit an SCP. As requested

- by specific task orders in the RFP, the CNWRA will review technical portions of SCPs to

' - ensure these are consistent with the NRC guidance and address all potentially contammated ,

media including structures, soil, groundwater, and surface water. In addition to review of ,

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- the SCP in gaining familiarity with the site and plans for characterization, the CNWRA anticipates tasking to evaluate the licensee SCP and determine its adequacy for assessing  !

- location and extent of residual contamination at the site. The CNWRA also expects to judge l remediation plans agust the NRC guidance and cleanup criteria.

The.CNWRA will review portions of the SCR prepared by the licensee after completion of site characterization activities, to determine if these are adequate, contain sufficient I

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information to characterize the full extent of radiological contammation, and adequately

' address affected envkonmental media. The SCR review will also determine whether the characterization information :is sufficient to support an evaluation of reasonable  ;

decommissioning approaches _or alternatives. If requested, appropriate CNWRA staff will ,

, accompany the NRC decommissioning site PM and the contract TM to the site to gain i

familiarity with the site and surrounding areas. Such visits will be used to identify specific issues to address in evaluation of site characterization. The CNWRA PM and the technical reviewers tnay also be requested by the NRC TM to participate in meetings with the licensee, state, or other interested parties to discuss revisions and conclusions.' Specific task orders require the CNWRA to summarize the results of reviewing the SCP, SCR, or both in letter reports to'the NRC. These reports will identify the technical deficiencies. If the CNWRA determines the licensee submittal is adeguate, the report will include the basis for.

l this determination. l 1

• Provide Performance Assessment Support  !

l Under task order 0Nf the RFP, the CNWRA will provide technical assistance for a PA in l support of EIS development for the depleted uranium (DU) impact site on the Jefferson Proving Ground (JPG). The NRC is respomible for determining whether the licensee decommissioning proposal and decommissioning procedures comply with the NRC requirements and whether the decommissiorung alternative and actions selectedLby the licensee can be accomplished .in accordance with the requirements of.the NEPA as implemented by the NRC in 10 CFR Part 51. Assessment of decommissioning site performance includes a combination of complex evaluations resulting in an estimate of the y long-term impact of previous operations on humans and the environment. Development of i 1

an EIS is required by the NRC for those major federal actions that could have a significant effect on the quality of the human environment or the Commission otherwise determmes should be covered by an EIS.

Descriptions provided in the following sections are at the level of the individual task orders, the lowest level at which costs will be reported. Providing details at this level facilitates additions to or modifications' of individual task orders and monitoring and management by the designated NRC staff. The following sections specify whether each task order is for fee-recoverable work, non fee-recoverable work, or both. Descriptions provided for each task order given in the RFP include task order-specific objectives, scope, technical approach, staffing and management, deliverables and schedule, and travel requirements 3.1.1 Task Order 01: Groundwater Issues at the Wc4=ghouse Waltz Mills Facility An accident in 1%1. at the Westinghouse Corporation ~ Waltz Mills reactor in Madison, Pennsylvania, resulted in the. termination of active operation of the test reactor. Three holding basins were -

created to process contaminated soil generated during cleanup of the test reactor, Soil and groundwater -

on the site remain contaminated despite extensive cleanup activities subsequent to reactor shut down. In -

December 1992, the licensee, Westinghouse Corporation, requested that the NRC amend both the test reactor license and the special nuclear material license to provide authorization to process coinaminated soll under provisions of a new special nuclear material license. Authot;zation to transfer the Waltz Mills facility holding basins to the special nuclear material license was grantal to the licensee to facilitate characterization and remediation of the basins under the SDMP, 3-3'

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The licensee has a pump-and-treat progrr.m in place to prevent movement of contaminated groundwater at the site, and on May 17,1993, submitted a radiological characteriza: ion plan for,the site, together with plans for soil and groundwater characterization. The NRC conducted an inspection of the onsite characterization activities on August 31,1993. Following the inspection, the licensee submitted an initial facilities characterization report on February 18, 1994. A tinal groundwater and soil characterization report was also subulitted 9 the NRC in August 1994. The licensee also submitted a DP in September 1995.

Contamina: ion in groundwater currently exists at the. eastern end of the 800-acre site. The radionuclide of primary concern is strontium-90 (Sr-90). Measurements of Sr-90 concentrations in groundwater samples currently yield values as high as 400 pCi/1,8though concentrations of cesium-137 (Cs-137) that were elevated initially are now below detectable levels.

3.1.1.1 Objective The objective of task order 01 is to review the V'altz Mills facility SCRs and DP submitted by the licensee. The CNWRA will determine the adequacy of licensee characterization of the extent and location of remaining soil and groundwater contamination and assess whether licensee reconunended actions meet the NRC decommissioning criteria.

3.1.1.2 Scope Activities for this task order will include (i) developing familiarity with the NRC policy directives, regulatory guidance, and regulations pertinent to the CNWRA work tasked by the NRC on the Waltz Mills facility; (ii) conducting a literature review on the history and current extent of  ;

radiological contamination at the site and associated cleanup and disposal operations; (iii) participating in a site visit to the Waltz Mills facility in Madison, Pennsylvarua, to observe site characteristics; (iv) evaluating adequacy of licensee radiological characterization, cleanup, and remediation activities; (v) reviewing the licensee DP and supporting technical documents and based on the review, preparing recommendations, including the need for additional information (if any) from the licensee; (vi) providing the NRC with comments on the licensee responses to the NRC request (s) for additional information; and (vii) preparing input to the NRC SER for the Wahz Mills faci'.ity.

Activities conducted by the CNWRA for this task order will be charged to the licensee as fee-recoverable work. Special CNWRA reporting requirements for fee-recoverable work are described in section 5.3 of the financial volume (Volume II).

3.1.1.3 Technical Approach The CNWRA will be directly involved with the regulatory process. Therefore, it will be essential that contact with the NRC counterparts be established early to develop a refined understanding of the regulatory framework. In preparation for these initial contacts, the CNWRA staff selected will be directed to conduct an initial reading of appropriate sections of the NRC regulations, regulatory guidance, and policy statements pertinent to the work under this task order. These materials will be obtained by the CNWRA PM in coordination with the NRC TM and the other appropriate NRC staff. The purpose of this initial reading will not be to develop detailed expertise but rather to obtain basic regulatory knowledge to facilitate more thorough orientation from their NRC counterparts. The CNWRA PM will coordinate this effort with the NRC TM to ensure the scope is limited to the most important and pertinent 3-4

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sections of these regulations. The CNWRA recognizes a p'rticular level of technical review is required for licensing actions. The CNWRA PM will interact with the NRC TM on this topic and with the CNWRA technical personnel assigned to this task order to ensure that common understanding exists on appropriate levels for reviews requested under this task order. Examples of the NRC licensing documents and reviews will be obtained by the CNWRA PM from the NRC TM and provided to the proper CNWRA technical staff to facilitate under<tanding of suitable levels of reviews and content of the CNWRA deliverables.

As directed by the NRC TM, the CNWRA PM will conduct a literature search reviewing the SCR and other associated technical documents regarding the radiological history of the Waltz Mills Test Reactor and associated cleanup and disposal operations. This review will include examination and evaluatation of documents on the pump-and-treat program to remove contammated groundwater at the site. The CNWRA PM will interact with the NRC TM and cognizant NRC Region I personnel to determine the current status of decommissioning activities at the site. As directed by the NRC TM, the CNWRA will prepare a brief letter report describing the current extent of radionuclide contamination of soil, structures, and grounowater at the site. The resultam Waltz Mills Site Status Report" (8801-001-OGl) will be delivered to the NRC no later than two weeks after the CNWRA receipt of required documents from the NRC.

An appropriate number of CNWRA technical personnel conducting work on task order 01 will accompany the NRC staff on a visit of no more than one week to the Waltz Mills facility to become familiar with the site and associated information in previously reviewed technical reports and with site characteristics. The site visit date and the CNWRA participants will be coordinated between the CNWRA PM and the NRC TM. No later than one week following completion of the site visit the CNWRA will deliver a "Wahz Mills Site Visit Report" (8801-001-002) presenting important activities, observations, and technical aspects examined during the site visit.

Based on review of (i) the licensee SCRs and supporting and associated technical documents, (ii) regulatory requirements, and (iii) information gained during the site visit, the CNWRA will determine if there is a need for the licensee to perfonn additional radiological characterization of the site (groundwater and soils). The CNWRA will prepare a report that details the udequacy of licensee characterization, in-process &anup, and remediation activ ties and tl en recommends to the NRC TM any licensee follow-up actions necessary to provide additional characterization information to support evaluation of sufficient site cleanup. No later than two weeks after termination of the site visit, the CNWRA will deliver an " Adequacy of Waltz Mills Licensee Characterization Report" (8801-001-003).

Subsequent to an NRC determmation on adequacy of the licensee site characterization studies and pump-and-treat activities, and when directed by the NRC TM, the CNWlm will review the licensee DP to ascertain if this plan, in concert with ongoing licensee activities, will be sufficient to make a judgment that the cleanup will potentially result in the site meeting the NRC and other appropriate Federal and State decommissioning criteria. The CNWRA will review the licensee DP and associated technical docunents for adequacy of approach with respect to hydrology, geochemistry and health physics, and long-term health effects. The review will be conducted in accordance with the NRC " Standard Review Plan for Decommissioning Plans" (FC-90-2) and the " Format and Content Regulatory Guide for Decommissioning Plans" (Regulatory Guide 3.65). The CNWRA will support the NRC request for additional informat2n in connection with changes to the DP. Also, the CNWRA will evaluate the projected impacts of the no action alternative and the licensee proposed decommissioning alternative projected doses to workers and the public. Assessment of doses may be supported by analyses conducted 3-5

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5 using Residual Radioactivity (RESRAD), NEFTRAN II, or other appropriate computer programs. A letter report entitled, " Waltz Mills Recommendations Report" (8801-001-004), will be delivered to thy NRC '

within four weeks after completion of the site visit.

Following technical direction from the NRC TM, the CNWRA will review licensee responses to the NRC request for additimt information on the DP or other technical documents. The CNWRA will provide the NRC with coriunents on licensee responses in a ." Comments on Waltz Mills Licensee Responses" (8801-001-005) letter report no later than two weeks following the CNWRA receipt of the responses.

When given technical direction from the NRC TM, the CNWRA will provide input to a draft SER on sections of the Waltz Mills site DP reviewed by the CNWRA. This draft SER will be prepared in accordance with the NRC " Standard Review Plan for Decommissioning Plans" (FC-90-2). The " Input to Draft Waltz Mills Safety Evaluation Report" (8801-001-006) will be delivered to the NRC no later than four weeks following the CNWRA receipt from the NRC of final comments and responses by the licensee.

" Input to Final Waltz Mills Safety Evaluation Report" (8801-001-007) will be delivered to the NRC within 30 d after the CNWRA receipt of the N"C comments on input to the draft SER unless a shorter period of time is specified in writing by the NRC TM to the CNWRA PM.

As these activities continue, the CNWRA staff will interface with their NRC counterparts by telephone, electronic mail, and travel to the NRC headquarters. It is expected that the CNWRA PM and other technical staff assigned to the WTSO will frequently visit the NRC offices for interactions. Some background and reference documents are available only from the individual NRC staff members or from docket files at the NRC offices, and searches of these records may be necessary. The WTSO staff may be used to investigate documents available only at the NRC headquarters. The CNWRA staff at San Antonio have electronic access to NUDOCS and the NRC provides the CNWRA with periodic NUDOCS updates as microfiche files that will also be used to suppor' records searches.

3.1.1.4 Staffing and Management The CNWRA staff assigned for task order 01 will have expertise in geohydrology, geochemistry, health physics, and environmental sciences. Staff with an understanding of groundwater movement and contaminant transport, well drilling and operation, and health physics aspects of test reactor facilities will be provided. All participants will also have an understanding of the NRC regulatory process.

Dr. John Russell (Director, WTSO), a geoscientist with extensive technical and regulatory analysis experience, will serve as the CNWRA PM for the decommissioning project. As requested in the RFP, the CNWRA PM will provide the liaison function with the NRC and facilitate the understanding and rapid exchange of the NRC decommissioning policy and information to the CNWRA PI and staff assigned to this task order. The CNWRA PM will coordinate and schedule activities in this task order with the NRC PO and TM as items of high priority. It is expected this will be best accomplished through extensive interactions by the CNWRA PM at the NRC beadquarters. These interactions will also be used to obtain guidance on contract execution and procedural requirements from the appropriate NRC staff and management. Dr. Russell will be responsible for coordinating activities between this task order and the other task orders of the decommissioning project and will also assure integration of work. Management

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oversight will be provided by Dr. Budhi Sagar (CNWRA technical director) and Dr. Wesley Patrick

-(CNWRA president).

James Winterle (Scientist), a hydrologist, will serve as PI for task order 01. Ele will be responsible for accomplishing the task order scope on schedule and within cost. The PI will have frequent contacts with the NRC TM and PO. The PI will coordinate input and supporting resiews by the CNWRA staff (geochemists, hydrologists, hydrologic transport staff, health physicists, dose / risk assessment staff, and associated environmental sciences and geologic ! expertise support) as required. Pat LaPlante (Environmental Research Scientist) resides in the WTSO and will support the CNWRA PM in mamtanung frequent contact with the NRC staff to assure that activities requiring immediate action receive proper response.

The following additional CNWRA staff members have skills necessary to complete task order 01 and will be used by the PI as necessary: A. Armstrong, P. LaPlante, P. Mackin, M. Miklas, D. Pickett, J. Prikryl, S. Stothoff. D. Tumer, J. Weldy, and an expected new hire in the discipline of

' dose / risk assess.nent. Additionally, some support mty be required for specific areas where the core l

CNWRA staff do not have expertise. Limited use of consultants in these areas will avoid the necessity l

of hiring permanent staff to accomplish specific work items. Should this be necessary, the CNWRA has l

identified some particular individuals and companies that would be considered: Mr. Paul Mayo for low level waste and environmental hazards and Fishbeck, Thompson, Carr & Huber, Inc. and Raba. .I Kistner Consultar,ts, Inc. for hydrology issues.

The task order will be executed under the NRC approved CNWRA QA program and the CNWRA APs currently in effect for all NRC work. The CNWRA PM, PI, and other participating staff -l will be available for teleconferences or face-to-face meetings as needed on the project.

i 3.1.1.5 Deliverables and Schedule J

Table 3-1 presents the deliverables associated with task order 01. It is assumed work will be initiated immediately upon a contract award date of May 10,1997 and will extend to completion of the

- contract on September 26, 1997. In case of necessary delays, the NRC PO will be consulted for establishing new delivery dates.

Table 3-1. Deliverables for task order 01 Delivery Deliverable Deliverable Description Date  :

Number Waltz Mills Site Status Report TBD FY97 8801-001-001 8801-001-002 Waltz Mills Site Visit Report .TBD FY97 Adequacy of Waltz Mills Licensee Characterization TBD FY97 8801-00i-003 8801-001-004. Waltz Mills Recommendations Report TBD FY97 Comments on Waltz Mills Licensee Responses TBD FY97 8801-001-005 3-7

l l1 Table 3-1. Deliverables for task order 01 (cont'd)

Delivery DellverEle Deliverable Description Da' e Number -

8801-001-006 Input to Draft Waltz Mills Safety Evaluation Report TBD lY97 8801-001-007 Input to Final Waltz Mills Safety Evaluation Report TBD FY97 Figure 3-1 presents the schedule for this task order. This schedule assumes that activity starts at the time of contract award on May 10, 1997 and proceeds uninterrupted to completion. In actual execution, it is expected this schedule will need to be modified because of (i) differences between planned and actual date of contract award, and hence, initiation of activities;(ii) uncertainty in scheduling the site visit; (iii) variation in time periods associated with licensee responses for additional information; and (iv) conflicting decommissioning licensing program demands on the NRC and the CNWRA staff.

Modifications will be made by the CNWRA PM in consultation with the NRC TM and PO.

. 3.1.1.6 Travel Travel is planned on the basis of 'ne three-person site visit of no more than one-week duration to the Waltz Mills facility (New Stanton. Pennsylvania) to become familiar with the site and to associate material presented in technical reports with observed characteristics of the site. Table 3-2 presents the proposed travel for this task order. Prior to travel, a mutually agreeable date for travel and number and identity of the CNWRA participants will be determined by consultation between the CNWRA PM and the NRC TM.

Table 3-2. Travel requirements for task order 01 Fiscal No. of Trip Duration, Year Travelers Days Purpose 1997 3 5 Site visit to Waltz Mills facility at New Stanton, Pennsylvania 1

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11 Recorre ndat Report ecommendat Report 12 Add Info Request 3 m - =-Q 13 Comments on Response ..

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v 14 Comments Report $ Comrrents FW 15 Irput to Draft SER Draft SER Report Qaft SER Report  !

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17 NRC Commerds on inpu [F_9sd~}-

13 input to Foat SER ,

,, rmW SER Report $ FinalSER Report Figure 3-1. Schedule for task order 01

1 L- .,

3.1.2 Task Order 02: Performance Assessmeut Analysis _a Support of the Jefferson .

Proving Ground Environmental Impact Statement Development -

The U.S. Army JPG is a former test facility used to evaluate and test ammunition and military

. components from 1941 to 1994. The site covers approximately 55,000 acres and is located in Madison. l Indiana.-On December 16, 1983, the U.a. Army at JPG obtained an NRC license (License No. I SUB-1435) to use a portion of the JPG site for testing DU penetrators and munitions. The U.S. Army I received, stoied, and fired DU munitions at the site from December 1983 to September 1994. _

Under the Defense Authorization Amendments and Base Realignment and Closure Act of 1988 (Public Law 100-526), JPG had to be closed by September 30,1995. The U.S. Army informed the NRC of its inte'tt to terminate its NRC license. The U.S. Army requested an exemption from the requirement to clean the DU impact area for unrestricted use. This request was based largely on the potentially high .

j risks and high costs associated with the presence of unexploded ordinance located in the DU impact area.

. The NRC has determined that approval of the licensee exemption would constitute a major federal action. Therefore, the NRC must prepare an EIS in accordance with NEPA 1%9 and the NRC I

irriplementing regula. ions in 10 CFR Part 51. On April 10, 1995, tl" NRC published in the " Federal

^

Register" (60 FR 18155) a Notice of Intent (NOI) to prepare an EIS for the decommissioning of JPG. i e The NOI identified four alternatives to be considered including the no action alternative. The licensee l

[ proposed action is to release the DU impact area with land-use restrictions compatible with a wildlife

- refuge. The DU would be allowed to remain on site. Appropriate institutional controls would be imposed  ;

4 to ensure durability of the land-use restrictions. l 1

A PA analysis is needed to evaluate potential long-term human health effects from exposure to radiological and chemical contaminants within the DU impact area. The PA analysis will consider exposure from all viable pathways both with land-use restrictions and, at some point, without land-use restrictions. The PA analysis will assess impacts foi all decommissioning alternatives considered viable.

Results from the PA analysis will be used to support the EIS for assessing potential human health effects. J Key components of the PA analysis will be (i) determination of the source term (including source concentrationi and infiltration rates); (ii) development of conceptual models; (iii) identification of appropriate pathways and receptor locations (including developing appropriate exposure scenarios);

j (iv) release and transport modeling of radionuclides and chemicals along various environmental pathways; ,

(v) determination of human health consequences; and (vi) evaluation of sensitivity and uncertainty within I the analysis. Source te m determination and conceptual model development must be completed early so

> this information can be shared with project staff involved in other aspects of the EIS (e.g., hydrologic and short-term human health impacts).

Deriving a' source term for the JPG site .will require assessing the potential long-term j

degradation of the DU penetrators. Further, determining the concentration of DU to be used in the PA analysis will be complicated by the fact that the DU penetrators are scattered over a large area, at multiple depths. The environmental transport analysis will require consideration of transport of both dissolved and undissolved contaminants in ground water and surface water both onsite and off JPG. The hydrogeology at the site is a karst environment, with sinkholes scattered throughout.

--3-10 o , , - ,,- w . -

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. 3.1.2.1 Objective

'Ihe objective of this task is to conduct PA analyses to evaluate potential long-term human health effects for decommissioning sites with DU contamination at JPG. Th se PA analyses will examine effects l '

that may occur from implementation of various alternatives to be considered in an EIS.

3.1.2.2 Scope

(

The CNWRA activities for this task order will include (i) developing familiarity with the NRC l

policy directives, regulatory guidance, and regulations pertinent to the CNWRA work tasked by the NRC on the JPG; (ii) reviewing information to become familiar with the characteristics of the JPG site including nature and extent of radiological contamination from DU penetrators; (iii) panicipating in a site visit to the JPG in Madison, Indiana, to observe and become familiar with site characteristics; (iv) evaluating adequacy of information available to conduct PA analyses and deriving additional data '

needed to perform the analyses; (v) determining and describing the source term, conceptual model(s), and overall approach reccmmended for PA analyses; and (vi: conducting PA analyses for the JPG that will

. inciude potential long-term human health effects and sensitivity and uncenainty of the results.

i Activities conducted by the CNWRA for this tad order wilt not be charged to the licensee as fee-recoverable work.

3

3.1.2.3 Technical Approach i

i The CNWRA will be directly involved with the regulatory process. Therefore, it will be i essential that contact with the NRC counterparts be established early to develop a refined understanding *

~

of the regulatory framework. In preparation for these initial contacts, the CNWRA staff selected will be -

directed to conduct an initial reading of appropriate sections of the NRC regulations, regulatory guidance, l

and policy statements pertinent to the work under this task order. These materials will be obtamed by the l

CNWRA PM in coordination with the NRC TM and the decommissioning site PM. Particular attention will be given to 10 CFR Part 51 and the NRC policy regarding implementation of NEPA requirements.

The purpose of this initial reading will not be to develop detailed expertise but rather to obtain basic

, regulatory knowledge to facilitate more thorough orientatic 1 from their NRC counterparts. The CNWRA PM will coordinate this effort with the NRC TM and the NRC decomnussioning site PM to ensure the secpe is limited to the most important and pertinent sections of these regulations. The CNWRA recognizes that a particular level of technical revier end PA analyses are required in a regulatory context.

i. The CNWRA PM will interact with the NRC TM on this topic and with the CNWRA technical personnel assigned to this task to assure that common understanding exists on appropriate levels for reviews and analyses requested under this task order. Examples of simihr reviews and analyses by the NRC to support J regulatory actions will be obtained by the CNWRA PM from the NRC TM and the other appropriate NRC staff and then provided to the CNWRA technical staff to facilitate understanding of suitable levels

of reviews, analyses, and content of the CNWRA deliverables.

The CNWRA PM will consult with the NRC decommissioning site PM for the JPG to obtain and become familiar with available site information and the EIS development schedule for the JPG. The l

CNWRA PM will transmit this information and associated regulatory and technical documents to the L CNWRA PI and other staff assigned to this task order. l L  !

l 3-11

. . .- ., . ~, - , . . .. .. - l --

a An appropriate number of CNWRA technical personnel conducting work on task order 02 will accompany the NRC technical personnel on a visi' of no more than one-week to the JPG faciljty at ,

Madison, Indiana, to become familiar with the site and to associate information in previously reviewed technical reports with characteristics observed during the visit. The site visit date and the CNWRA participants will be coordinated between the CNWRA PM and the NRC TM. No later than one week after completing the site visit, the CNWRA will deliver to the NRC a letter report entitled, " Jefferson Proving Ground Site Visit Report" (8801-002-001), presenting important activities, observations, and technical aspects examined during the site visit.

Based on review of (i) regulatory and technical documents on the JPG and in, particular on site contamination from DU penetrators, (ii) regulatory requirements, and (iii) information gained during the site visit, the CNWRA will determine if additional data are required to complete adequate PA analyses.

No later than four weeks following the site visit, the CNWRA will deliver a " List of Data Needs for Jefferson ProvinF Ground" letter report (8801-002-002).

"Dran Report on Jefferson Proving Ground source Term" (8801-002-003) describing the source term, conceptual model(s) for transport, exposure scenarios, and overall approach recommended for use

- in JPG site PA analyses will be delivered to the NRC no later than 10 wk following the CNWR A receipt of data requested in the " List of Data Needs for Jefferson Proving Ground" letter report. The CNWRA will modify the draft source term report considering comments received from the NRC and will deliver

" Final Report on Jefferson Proving Ground Source Term" (8801-002-0(M) no later than 4 wk after receipt of the NRC comments on the draft report.

The planned schedule for task order 02 will require delivery of " Final Report on Jefferson Proving Ground Source Term" (8801-002-0(M) on November 14, 1997.Section I.6(d) of the RFP

[52.216-22 " Indefinite Quantity" (October 1995)] gives the basis for justifying delivery of this milestone report after September 26,1997, but before November 15,1997. The NRC RFP requests task order 02 be completed with delivery of a " Performance Assessment Analysis for Jefferson Proving Ground" (item G in section 7.0 of the " Initial Task Orders for Decommissioning") 12 wk following submission of the final source term report. The 20-wk duration of the decommissioning project based on a planned initiation date of May 10,1997 (termination on September 26.1997) is inadequate for the CNWRA to conduct a PA analysis and prepare the requested report. Figure 3-2 confirms the anticipated con act period is inadequate to accomplish the PA analysis after completion of the fmal JPG source term report.

As these activities continue, the CNWRA staff will interface with their NRC counterparts by telephone, electronic mail, and travel to the NRC headquarters. It is expected that the CNWRA PM and other technical staff assigned to the WTSO will frequently visit the NRC offices for interactions. Some background and reference documents are available only from the individual NRC staff members or from docket files at the NRC offices, and searches of these records may be necessary. The WTSO staff may be used to investigate documents available only at the NRC headquarters. The CNWPA staff at San Antonio have electronic access to NUDOCS and the NRC provides the CNWRA with periodic NUDOCS updates as microfiche files that will also be used to support records searches.

3.1.2.4 Staffing and Management The CNWRA staff assigned for task order 02 will have expertise in hydrology, hydrogeology, geoshemistry (including radiogeochemistry), dose / risk assessment, PA, and environmental sciences. A technical understanding of waste degradation, contaminant transport, scenario selection, conceptual model 3-12 l

? .l.

't e

development, heahh consequences, and uncertainty and sensitivity analyses will be provided. All participints will also have an understandmg of the NRC regulatory process.

Dr. John Russell (Director, WTSO), a geoscientist with extensive technical and regulatory analysis experience, will serve as the CNWRA PM for the decommissioning project. As requested in the 1 RFP, the CNWRA PM will provide the liaison function with the NRC and facilitate the understanding l and rapid exchange of the NRC decommissioning policy and information to the CNWRA P1 and staff assigned to this task order. The CNWRA PM will coordinate and schedule activities in this task order l with the NRC PO and TM as items of high priority. It is expected this will be best accomplished through j j

extensive interactions by the CNWRA PM at the NRC headquarters. These interactions will also be used to obtain guidance on contract execution and procedural requirements from the appropriate NRC staff and l management. Dr. Russell will be responsible for coordinating activities between this task order and the l l

other task orders of the decommissioning project and wi!! also assure integration of work. Management l oversight will be provided by Dr. Budhi Sagar (CNWRA technical director) and Dr. Wesley Patrick (CNWRA president).

Patrick LaPlante (Environmental Research Scientist), an environmental scientist with training in epidemiology and experience conducting pathway and dose analyses, will serve as PI for task order 02.

He has extensive PA and regulatory analysis experience and is assigned to the WTSO. He will be l l

responsible for accomplishing the task order scope on schedule and within cost. The PI will have frequent '

contacts with the NRC TM and PO either by telephone or in person. The PI will coordinate input and supporting reviews by the CNWRA staff (geochemists, hydrologists, health physicists, and associated geological support) as required.

The following additional CNWRA staff members have' skills necessary to complete task

.ader 02 and will be used by the PI as necessary: A. Armstrong, P. Mackin, J. Ptikryl, S. Stothoff, D. Tumer, J. Weldy, and an expected new hire in the discipline of dose / risk assessment. Additionally, some support may be required for specific areas where the core CNWRA staff do not have expertise.

Limited use of consultants in these areas will avoid the necessity of hiring permanent staff to accomplish specific work items. Should this be necessary, the CNWRA has identified some particular individuals and companies that would be considered: Mr. Paul Meyo for low-level waste and environmental hazards and Fishbeck, Thompson, Carr & Huber, Inc. and Rabadistner Consultants, Inc. for hydrolmay issues.

The task order will be executed under the NRC appmved CNWRA QA program and the CNWRA APs currently in effect for all NRC work. The CNWRA PM, PI, and other participating staff will be available for teleconferences or face-to-face meetings as needed on the project.

3.1.2.5 Deliverables and Schedule Table 3-3 presents the deliverables associated with task order 02. It is assumed work will be initiated immediately upon a contract award date of May 10,1997 and will extend to delivery of the final source term report on November 14,1997 as described in section 3.1.2.3. In case of necessary delays, the NRC PO will be consulted for establishing new delivery dates.

3-13

i Table 3-3, Deliverables for task order 02 ,

1:

Deliverable Delivery Number Deliverable Desciiption Date 8801-002-001 Jefferson Proving Ground Site Visit Report TBD FY97 8801-002-002 List of Data Needs for Jefferson Proving Ground TBD FY97 8801-002-003 Draft Report on Jefferson Proving Grour41 Source Term TBD FY97 8801-002-004 Final Report on Jefferson Proving Ground Source Term TBD FY97 Figure 3-2 presents the schedule for this task order. This schedule assumes that activity starts at the time of contract award on May 10, 1997 and proceeds uninterrupted to completion. In actual execution, it is expected this schedule will need to be modifwd because of (i) differences between planned and actual date of contract award, and hence, initiation of activities; (ii) uncertainty in scheduling the site visit; (iii) variation in time periods associated with licens* responses for additional information; and (iv) conflicting decommissioJng licensing program demands on the NRC and the CNWRA staff.

Modifications will be made by the CNWP ' PM in consultation with the NRC TM and PO.

3.1.2,6 Travel Travel is planned on the basis of one four-person site visit of no more than one-week duration i

to JPG facility (Madison, Indiana) to become familiar with the site and to associate material presented in technical reports with observed characteristics of the site. A second four-person trip of one week duration may be also required to accompany the NRC staff in presenting the draft EIS at a public meeting in the vicinity of the JPG site. Table 3-4 presents the proposed travel for this task order. Prior to travel, a mutually agreeable date for travel and number and identity of the CNWRA participants will be determined by consultation between the CNWRA PM and the NRC TM.

Table 3-4. Travel requirements for task order 02 Fiscal No. of Trip Duration, Year Travelers Days Purpose 1997 4 5 Site visit to Jefferson Proving Ground near Madison, Indiana 1997 4 5 Public meeting at Madison, Indiana, on draft environmental impact statement l

l 3-14 1

~

ua, June I ur 1 August I sept neer 1 octoiwr 1~ Nai.

10 Task L ,; 4 111118125 1 i e ] +5 l 22 I 29 i 6 l 13 l 20127 I 3 l 10 l 57 l 24 l 31 l 7' l 14 l 21 l 28 I 5 F12119 i I{TTW '

1 Jefferson PrmeM3 Groumi l 2- R- ste m#' m 3 SteVad 4 EVist Report Prep 6 See Visa Report sue visa Re!> ort g Deterrrune Data Needs q t>t 7 Ust of Data Needs Ust of Data Needs 3 Oha romOcersee ]

3 Prep Source Term' Draft Rp  :

10 Nak" Source Term Report ~ Oraft Source Term Report %'

11 ~ ' NRC Commerts on Oft Rpt .

12 Prep Source Term Rpt

~

is source Term Fnal Report ' Source Term Final Report l

Figure 3-2. Schedule for task order 02

-- - -= - - -

L

7 g, 1

\ '

3.1.3 Task Order 03: Environmental Issues at the U.S. Navy Depleted Uranium Munitions Firing Range,-Dahlgren, Virginia I

The U.S. Navy is currently considering decommissioning the facility under the Navy Master Materials License and the Navy Permit for Dahlgren. Two small, outdoor ranges were used to test fire l small anns with DU penetrators. The rounds were fired into a gun butt and the level of contamination

! at the facility outside of the gun butt is expected to be low. The Navy is assessing whether it will need -

to use the Dahlgrer ranges in the future for firing munitions with DU penetrators and currently believes it will pursue decommissioning the facility in FY97.

3.1.3.1 Objective The objective of task order 03 is to review the SCRs and the DP submitted by the licensee. The CNWRA will determine whether tue licensee has adequately characterized the extent and location of the remaining soil and ;roundwater contamination and if liensee recommended actions meet the NRC

~

decommissioning criteria.

3.1.3.2 Scope Activities for this task order will include (i) developing familiarity with the NRC policy directives, regulatory guidance, and regulations pertinent to the CNWRA work tasked by the NRC on DU contamination at the Navy firing range at Dahlgren, Virginia; (ii) conducting a review of the NRC docket file, including SCRs and other associated technical documents regarding the history and current extent of radiological contamination at the site and associated cleanup and disposal operations; (iii) participating in a visit to the site at Dahlgren, Virginia, to observe site characteristics; (iv) evaluating {

adequacy of licensee radiological characterization, cleanup, and remediation activities; (v) reviewing the -

licensee DP and supponing technical documents and based on the review, preparing recommendations, including the need for additional information, if any, from the licensee; (vi) providing the NRC with comments on the licensee responses to the NRC request (s) for additional information; and (vii) preparing input to the NRC SER for the Dahlgren site. ,

Activities c >nducted oy the CNWRA for this taa order wdl not be charged to the licensee as fee-recoverable work.

3.1.3.3 Technical Approach The CNWRA will be directly involved with the regulatory process. Therefore, it will be essential that contact with the NRC counterparts be established early to develop a refined understanding of the regulatory framework. In preparation for these initial contacts, the CNWRA staff selected will be directed to conduct an initial reading of appropriate sections of the NRC regulations, regulatory guidance, and tx)licy statements pertinent to the work under this task order. These materials will be obtained by the

- CNWRA PM in coordination with the NRC TM and the other appropriate NRC staff. The purpose of this initial reading will not be to' develop detailed expertise but rather to obtain basic regulatory knowledge to facilitate more thorough orientation from their NRC counterparts. The CNWRA PM will coordinate this effort with the NRC TM to ensure the scope is ihited to the most important and pertinent sections of these regulations. The CNWRA recognizes diat a particular level of technical review is required for licensing actions. The CNWRA PM will interact with the NRC TM on this topic and with 3-16 s

4

---

,e , - - , - - - - - - - - - - - - - . -_ _ . - _ - - _ _ _ _ - - - - - - . - _ _ - - . - - - - - - - -

v

c.

the CNWRA technical personnel assigned to this task to assure that common understanding exists on

, appropriate levels for reviews requested under this task order. Examples of the NRC licensing documents and reviews will be obtained by the CNWRA PM from the NRC TM and provided to the proper CNWRA technical staff to facilitate understanding of suitable levels of reviews and content of the CNWRA deliverables.

The CNWRA will conduct a literature search, as directed by the NRC TM, reviewing the SCR and other associated technical documents regarding the radiological history of the Navy DU munitions firing range at Dahlgren, Virginia, and associated cleanup and disposal operations. This review will examine and evaluate documents on soll contammation and confirmed or potential groundwater contammation at the site. The CNWRA PM will interact with the NRC TM and cognizant NRC Region F personnel to determine current status of decommissioning activities at the site. As directed by the NRC TM, the CNWRA will prepare a report describing the site regulatory status and whether or not it  ;

complies with Federal and State regulations. The resultant "Dahlgren Site Status Report" (8801-003-001)  ;

will be delivered to the NRC no later than two weeks after the CNWRA receipt of pertinent documents j l

from the NRC. 1 1

The appropriate technical personnel on this task order will accompany the NRC technical l l

personnel on a visit of not more than one week to the Dahlgren facility to become familiar with the site and to associate information in previously reviewed technical reports with characteristics observed during l the visit. The site visit date and the CNWRA participants will be coordinated between the CNWRA PM and the NRC TM. No later than one week following completion of the site visit, the CNWRA will deliver l a "Dahlgren Site Visit Report" (8801-003-002) presenting important activities, observations, and technical aspects examined during the site visit. ,

Based on review of (i) the licemee SCR and supporting and associated technical documents, (ii) regulatory requirements, and (iii) information gained during the site visit, the CNWRA will determine if there is a need for the licensee to obtain additional radiological characterization of the site (grotmdwater I and soils). The CNWRA will prepare a report that describes the adequacy of licensee characterization, in-process cleanup, and remediation activities. The report will include recommendations to the NRC TM on li:ensee follow ep actions necessary to provide additional characterization information to support evalua' ion of sufficit ' <ite cleanup. No later than two veeks afte* completion of the site visit, the CNWRA will deliver an " Adequacy of Dahlgren Site Characterization Report" (8801-003-003) including the information described in this paragraph.

Subsequent to an NRC determination on adequacy of the licensee site cin.racterization studies and proposed site remediation activities, and when directed by the NRC TM, the CNWRA will review the licensee DP to ascertain if this plan, in concert with ongoing licensee activities, will be sufficient to make a judgment that the cleanup will potentially result in the site complying with the NRC and other appropriate Federal and State decommissioning criteria. The CNWRA will review the licensee DP and associated technical documents for adequacy of approach with respect to hydrology, goochemistry, health physics, and long term health effects. The review will be conducted in accordance with the NRC

" Standard Review Plan for Decommissioning Plans" (FC-90-2) and the " Format and Content Regulatory Guide for Decommissioning Plans" (Regulatory Guide 3.65). The CNWRA will support the NRC request for additional infonnation in connection with changes to the DP. In addition, the CNWRA will evaluate the projected impacts of the no action alternative and the licensee proposed decommissioning alternative projected doses to workers and the public. Assessment of doses may be supported by analyses conducted using RESRAD, NEFTRAN II, or other appropriate computer codes. A letter report entitled, "Dahlgren 3-17

8

'd Site Recommendations Report" (8801003-004), will be delivered to the NRC within four weeks following the site visit. .

Following technical direction from the NRC TM, the CNWRA will review licensee responses to the NRC request for additional infonnation on the DP or other technical documents. The CNWRA will provide the NRC with comments on licensee responses in a " Comments on Dahlgren Site Licensee Responses" (8801-003-005) letter report no later than two weeks following the CNWRA receipt of the responses.

Subsequent to, and in concert with technical direction from the NRC TM, the CNWRA will provide input to a draft SER on sections of the Dahlgren site DP reviewed by the CNWRA. This draft SER will be prepared in accordance with the NRC " Standard Review Plan for Decommissioning Plans" (FC-90-2). The " Input to Draft Dahlgren Safety Evaluation Report" (8801-003-006) will be delivered to the NRC no later than four weeks following the CNWR A receipt trom the NRC of final comments and responses by the licensee.

" Input to Final Dahlgren Safety Evaluation Report" (8801-004-007) will be delivered to the NRC within 30 d after the CNWRA receipt of the NRC comments on input to the draft SER unless a shorter period of time is specified in writing by the NRC TM to the CNWRA PM.

As these activities continue, the CNWRA staff will interface with their NRC counterparts by telephone, electronic mail, and travel to the NRC headquarters. It is expected that the CNWRA PM and other technical staff assigned to the WTSO will frequently visit the NRC offices for interactions. Some background and reference documents are available only from the individual NRC staff members or from docket files at the NRC offices, and searches of these records may be necessary. The WTSO staff may be used to investigate documents available only at the NRC headquarters. The CNWRA staff at San Antonio have electronic access to NUDOCS and the NRC provides the CNWRA with periodic NUDOCS updates as microfiche files that will also be used to support records searches.

3.1.3.4 Staffing and Management The CNWRA str.ff assigned for task orde, o3 will have expertise in hydrology, hydrogeology, geochemistry (including radiogeochemistry), health physics, dose / risk assessment, and environmental sciences. These staff will have a technical understanding of well drilling operations, groundwater movement, contaminant transport, and the health physics concerns relevant to evaluation of a firing range where DU penetrators are present. All participants will also have an understanding of the NRC regulatory process.

Dr. John Russell (Director, WTSO), a geoscientist with extensive technical and regulatory analysis experience, will serve as the CNWRA PM for the decommissioning project. As requested in the RFP, the CNWRA PM will provide the liaison function with the NRC and facilitate the understanding and rapid exchange of the NRC decommissioning policy and information to the CNWRA PI and staff assigned to this task order. The CNWRA PM will coordinate and schedule activities in this task order with the NRC PO and TM as items of high priority. It is expected this will be best accomplished through extensive interactions by the CNWRA PM at the NRC headquarters. These interactions will also be used to obtain guidance on contract execution and procedural requirements from the appropriate NRC staff and management. Dr. Russell will be responsible for coordinating activities between this task order and the other task orders of the decommissioning project and will also assure integration of work. Management 3-18

l

.. i

\'- l

. 1 oversight will be provided by Dr. Budhi Sagar (CNWRA technical director) and Dr. Wesley Patrick ,

(CNWRA president).

Dr. John Russell will serve as the CNWRA PI for task order 03. In this capacity he will be responsible for accomplishing the task order scope on schedule and within cost. The PI will have frequent '

contacts with the NRC TM and PO either by telephone or in person. The PI will coordinate input and supporting reviews by the CNWRA staff (geochemists, hydrologists, health physicists, environmental scientists, and associated support) as required.

The following additional CNWRA staff members have skills necessary to complete task order 03 and will be used by the PI as necessary: A. Armstrong, P. LaPlante, P. Mackin, M. Miklas, D. Pickett, J. Prikryl, J. Winterle, and an expected new nire in the discipline of dose / risk assessment.

Additionally, some support may be required for specific areas where the core CNWRA staff do not have expertise. Limited use of consultants in these areas will avoid the necessity of hiring permanent staff to accomplish specific work items. Should this be necessary, the CNWRA has identified some particular individuals and companies that would be considered: Mr. Paul Mayo for low-level waste and environmental hazards and Fishbeck Thompson, Carr & Huber, Inc. and Raba-Kistner Consultants, Inc.

for hydrology issues.

• The task order will be e.tecuted under the NRC approved CNWRA QA program and the CNWRA APs currently in effect for all NRC work. The CNWRA PM, PI, and other participating staff will be available for teleconferences or face-to-face meetings as needed on the project.

3.1.3.5 Deliverables and Schedule Table 3-5 presents the deliverables associated with task order 03. It is assumed work will be i i

initiated immediately upon a contract award date of May 10,1997 and will extend to completion of the contract on September 26, 1997. In case of necessary delays, the NRC PO will be consulted for i l

' estsblishing new delivery dates.

Table 3-5. Deliverables for task order 03 Deliverable Delivery Number Deliverable Description Date 8801-003-001 Dahlgren Site Status Report TBD FY97 8801-003-002 Dahlgren Site Visit Report TBD FY97 8801-003-003 Adequacy of Dahlgren Site Characterization TBD FY97 8801-003-004 Dahlgren Site Recommendations Report TBD FY97 8801-003-005 Comments on Dahlgren Site Licensee Responses TBD FY97 8801-003-006 Input to Draft Dahlgren Safety Evaluation Report TBD FY97 8801-003-007 Input to Final Dahlgren Safety Evaluation Report TBD FY97 l 3-19

Figure 3-3 presents the schedule for this task order. This schedule assumes that activity stans at the time of contract award on May 10, 1997 and proceeds uninterrupted to completion. In actual execution, it is expected this schedule will need to be modified because of (i) differences between planned and actual date of contract award, and hence, initiation of activities:(ii) uncertainty in scheduling the site visit; (iii) variation in time periods associated with licensee responses for additional information, and .

l (iv) confliaing decommissioning licensinc program demands on the NRC and the CNWRA staff, Modifications will be made by the CNWRA PM in consultation with the NRC TM and PO, 3.1.3.6 Travel Travel is planned on the basis of one three-perscr. site visit of no more than one-week duration to the Dahlgren facility (Dahlgren, Virginia) to become familiar with the site and to associate material presented in technical reports with observed characteristics of the site. Table 3-6 presents the proposed travel for this task order. Prior to travel, a mutually agreeable date for travel and number and identity of the CNWRA participants will be determined by consultation between the CNWRA PM and the NRC TM.

Table 3-6. Travel requirements for task order 03 Fiscal No. of Trip Duration, Year Travelers Days Purpose 1997 3 Site visit to U.S. Navy depleted uranium munitions firing range near Dahlgren, Virginia i

'I 3-20  !

l

~

[ May June I Jtdy l %ust l September f ~~ ~Oct< dei ~~I~

K) Tast nr 27 l 4 [ 11 l 18 1 25 1 18 [35 l 22 [ 29 I 6 l 13 @ ] 27 l 3 ! to i 17 l 24131 1 7 I14121 128TET12fiBhTEl I 1 Jahlgren.VA Site i 2 Ottars Docur-erts

]

3 Review Occuments 4 See Status Rept . $ Sate Status Report s see vm g

__ _. 1 7 See Vist Report $ Site Wset Report g Adequacy of Characteriz y 3 Adeq of Charactere Rgt $ Adeq of Characteriz Rpt 10 Recommendations y ti-'~ Recommendat Report ecommendat Report 12 . Add info Request [;- ; -27 _2-},

13 Comments on Response 14 Comments Report ommente 9eport 15 Ut'o5 aft SER j 10 drabER Report att SER Report 17 MC Comments on inpu

[ f_+=+c. " }]

~

13 lnput to Finst SER

! h 13 Fanet SER Report $ Fhat SER Report l

i l

Figure 3-3. Schedule for task order 03 l

l nr. .

1 1

.; i 1

i l

4 3.1.4 Task Ortier 05: Environmental Issues at the TVA Burial Site, Muscle Shoals, 'l 4 Alabama .

l The Tennessee Valley Authority (TVA) operated a low-level waste burial site on the TVA Reservation near Muscle Shoals, Alabama, from April 1966 to January 1981. The burial site consists of waste emplaced in 40 holes 10 ft deep and 2 ft in diameter. Waste was placed in the lower 6 ft of the holes and the remaining upper portion of each hole was filled with clay. This burial site was licensed by the Atomic Energy Commission and operated under 10 CFR 20.304 until this rule was deleted in January 1981. Material buried at this site was primarily waste generated from agricultural experinents and laboratories under severa! licens:s issued to various organizations within TVA. Records of disposal indicate all of the material buried was classified as by-product material except less than 20 g of enriched uranium classified as special nuclear material. The enriched uranium appears to be waste material from quality control analyses of nonirradiated fuel pellets with enrichments of a nommal three percent or less.

The material buried was predominately contaminated laboratory waste, including contuninated soil from greenhouse experiments. Available records indicate less than four gallons of xylene associated with liquid scintillation cocktads in high-density plastic vials was aise buried.

TVA is currently assessing the radiological impacts of the burial site and its impact on the local environment, including groundwater at the site. TVA is developing a DP for the site and is expected to either propose the material remain in place and the site be released for unrestricted use based upon RESRAD (or similar pathway and dose assessment code) analyses or remove all or a portion of the materials buried at the site and transfer the contaminated material to a currently licensed disposal site.

Presence of radionuclides in the soil or groundwater table has not been determined at this time.

3.1.4.1 Objective The objective of task order 05 is to review the SCRs and the DP submitted by the licensee. The CNWRA will determine if the licensee adequately characterized the extent and location of the remaining soil and groundwater contamination at the TVA Burial Site at Muscle Shoals, Alabama, and if licensee recommended actions comply with the NRC decommissioning criteria.

3.1.4.2 Scope Activities for this task order will include (i) developing familiarity with the NRC policy l directives, regulatory guidance, and regulations pertinent to the CNWRA work tasked by the NRC on the TVA Burial Site at Muscle Shoals, Alabama; (ii) conducting a literature review, including SCRs and

• other associated technical documents regarding the history and current extent of radiological contamination at the site and associated cleanup and disposal operations; (iii) participating in a visit to the site at Muscle Shoals, Alabama, to observe site characteristics; (iv) evaluating the adequacy of licensee radiological characterization, cleanup, and remediation activities; (v) reviewing the licensee DP and supporting technical documents, based on the review, and preparing recommendations, including the need for additional information, if any, from the licensee; (vi) providing the NRC with comments on licensee responses to the NRC request (s) for additional information; and (vii) preparing input to the NRC SER for the Muscle Shoals site.

1 Activities conducted by the CNWRA for this task order will not be charged to the licensee as l fee-recoverable work. l l

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3.1.4.3 Technical Approach The CNWRA will be directly involved with the regulatory process. Therefore, it will be essential that contact with the NRC counterparts be established early to develop a refined understanding

- of the regulatory framework. In preparation for these initial contacts, the CNWRA staff selected will be directed to conduct an initial reading of appropriate sections of the NRC regulations, regulatory guidance, and policy statements pertinent to the work under this task order. These materials will be obtained by the CNWRA PM in coordination with the NRC TM anu the other appropriate NRC staff. The purpose of this initial reading will not be to develop detailed expertise but rather to obtain basic regulatory knowledge to facilitate more thorough orientation from their NRC counterparts. The CNWRA PM will coordinate this effort with the NRC TM to ensure the scope is limited to the most important and pertinent sections of these regulations. The CNWRA recognizes that a particular level of technical review is

. required for licensing actions. The CNWRA PM will interact with the NRC TM on this topic and with

.the CNWRA technical personnel assigned to this task to ensure that common understanding exists on i appropriate levels for reviews requested under this task order. Examples of the NRC licensing documents and revlews will be obtained by the CNWRA PM from the NRC TM and provided to the proper CNWRA technical staff to facilitate understanding of suitable levels of reviews and content of the CNWRA deliverables.

The CNWRA will conduct a literature search, as directed by the NRC TM, reviewing the SCR and other assoc ated technical documents regarding the radiological history of the TVA Burial Site at Muscle Shoals, Alabama, and associated cleanup and disposal operations. This review will include examination and evaluation of literature on the exhumation operation to remove buried radioactive waste l and potential or confirmed soil and groundwater contamination at the site. The CNWRA PM will interact l with the NRC TM and the cognizant NRC Region II personnel to determme the current status of l decommissioning activities at the site. As directed by the NRC TM, the CNWRA will prepare a letter l repon describing the site regulatory status and whether or not it complies with Federal and State ,

regulations. The resultant " Muscle Shoals Site Status Repon" (8801-005-001) will be delivered to the NRC no later than two weeks after the CNWRA receipt of pertinent documents from the NRC.

1 An appropriate number of CNWRA technical personnel on this task order will accompany the

.NRC staff on a visit of not more than one week to the TVA Burial Site at Muscle Shoa1. Alabama, to become familiar with the site arid to associated information in previously reviewed techrucal reports and with site characteristics. The site visit date and the CNWRA participants will be coordinated between the CNWRA PM and the NRC TM. No later than one week following completion of the site visit, the L CNWRA will deliver a " Muscle Shoals Site Visit Repon" (8801-005-002) presenting important activities, observations, and technical aspects examined during the site visit.

Based on review of (i) the licensee SCRs and supponing and associated technical documents, .

L -(ii) regulatory requirements, and (iii) information gained during the site visit, the CNWRA will determine if there is a need for the licensee to obtain additional radiological characterization of the site (groundwater L

l and sods). The CNWRA will prepare a repon that describes the adequacy of licensee characterization, l

in-process cleanup, and remediation activities. The report will include recommendations to the NRC TM l on licensee follow-up actions necessary to provide additional characterization information to support evaluation of sufficient site cleanup. No later than two weeks after the site visit, the CNWRA will deliver

an " Adequacy of Muscle Shoals Site Characterization Report" (8801-005-003) including the information described in this paragraph.

l 3-23 l-

. - _ _ - - . _ = _ _ ___

Subsequent to an NRC determination on adequacy of the licensee site characterization studies and proposed site remediation activities, and when directed by the NRC TM, the CNWRA will review the licensee DP to ascertain whether this plan, in concert with ongoing licensee activities, will be sufficient to make a judgment that the cleanup will potentially result in the site complying with the NRC and other appropriate Federal and State decommissioning criteria. The CNWRA will review the licensee DP r.nd associated technical documents for adequacy of approach with respect to hydrology, geochemistry health physics, and long-term health effects. The review will be conducted in accordance with the NRC

" Standard Review Plan for Decommissioning Plans" (FC-90-2) and will evaluate if the licensee DP is sufficient using the " Format and Content Regulatory Guide for Decommissioning Plans" (Regulatory Guide 3.65). The CNWRA will support the NRC request for additional information in connection with changes to the DP. In addition, the CNWRA will evaluate the projected impacts of the no action attemative (under 10 CFR Part 51) and the licensee proposed decommissioning alternative projected doses to workers and the public. Assessment of doses may be supported by analyses conducted using RESRAD, NEFTRAN II, or other appropriate computer codes. A letter report entitled, " Muscle Shoals Site Recommendations Report" (8801-005-004), will be delivered to the NRC no later than four weeks after completion of the site visit.

Following technical direction from the NRC TM, the CNWRA will review licensee responses to the NRC request (s) for additional information on the DP or other technical documents. The CNWRA will provide the NRC with comments on licensee responses in a " Comments on Muscle Shoals Licensee Responses" (8801-005-005) letter report no later than two weeks after the CNWRA receipt of the responses.

Subsequent to, and in concert with technical direction from the NRC TM, the CNWRA will provide input to a draft SER on sections of the Muscle Shoals site DP reviewed by the CNWRA This draft SER will be prepared in accordance with the NRC " Standard Review Plan for Decommissioning Plans" (FC-90 2). The " Input to Draft Muscle Shoals Safety Evaluation Report" (8801-005-006) will be delivered to the NRC no later than four weeks following the CNWRA receipt from the NRC of final comments and responses by the licensee.

" Input to a Final Muscle Shoals Safety Evalu' tion Report" (8801-005-007) will be delivered to the NRC within 30 d after the CNWRA receipt of the NRC comments on input to the draft SER unless a shorter period of time is specified in writing by the NRC TM to the CNWRA PM.

As these activities continue, the CNWRA staff will interface with their NRC counterparts by telephone, electronic mail, and travel to the NRC headquarters. It is expected that the CNWRA PM and other technical staff assigned to the WTSO will frequently visit the NRC offices for interactions. Some background and reference documents are available only from the individual NRC staff members or from docket files at the NRC offices, and searches of these records may be necessary. The WTSO staff may be used to investigate documents available only at the NRC headquarters. The CNWRA staff at San Antonio have electronic access to NUDOCS and the NRC provides the CNWRA with periodic NUDOCS updates as microfiche files that will also be used to support records searches.

3.1.4.4 Starting and Management The CNWRA staff assigned for task order 05 will have expertise in hydrology, hydrogeology, geochemistry (including radiogeochemistry), health physics, dose / risk assessment, and environmental sciences. These staff will have a technical understanding of well drilling operations, groundwater 3

g.

movement, contaminant transport, and the health physics concerns relevant to a radioactive waste burial

. site. All participants will also have an understanding of the NRC regulatory process.

Dr. John Russell (Director, WTSO), a geoscientist with extensive technical and regulatory analysis experience, will serve as the CNWRA PM for the decommissioning project. As requested in the RFP, the CNWRA PM will provide the liaison function with the NRC and facilitate the understanding and rapid exchange of the NRC decommissioning policy and information to the CNWRA PI and staff assigned to this task order. The CNWRA PM will coordinate and schedule activities in this task order with the NRC PO and TM as items of high priority. It is expected this will be best accomplished through extensive interactiom by the CNWRA PM at the NRC headquarters. These interactions will also be used to obtain guidance on contract execution and procedural requirements from the appropriate NRC staff and management. Dr. Russell will be responsible for coordinating activities between this task order and the other task orders of the decommissioning project and will also assure integration of work. Management oversight will be provided by Dr. Budhi Sagar (CNWRA technical director) and Dr. Wesley Patrick (CNWRA president).

Jim Winterle (Scientist), a hydrologist, will serve as the CNWRA PI for task order 05. He will be responsible for accomplishing the task order scope on schedule and within cost. The P1 will have frequent contacts with the NRC TM and PO either by a.. phone or in person. The P1 will coordinate l

input and supporting reviews by the CNVNA staff (geochemists, hydrologists, health physicists, dose / risk assessment staff, environmental scientists, and associated support) as required.

The following additional CNWRA staff members have skills necessary to complete task order 05 and will be used by the PI as necessary: A. Armstrong, P. LaPlante, P. Mackin, M. Miklas, y D. Pickett, S. Stothoff, D. Turner, J. Weldy, and an expected new hire in the discipline of dose / risk assessment. Additionally, some support may be required for specific areas where the core CNWRA staff  ;

do not have expertise. Limited use of consultants in these areas will avoid the necessity of hiring _

permanent staff to accomplish specific work items. Should this be necessary, the CNWRA has identified some particular individuals and companies that would be considered: Mr. Paul Mayo for low-level waste and environmental hazards and Fishbeck, Thompson, Carr & Huber, Inc. and Raba-Kistner Consultants, Inc. for hydrology issues.

The task order will be executed under the NRC approved CNWRA QA program and the CNWRA APs currently in effect for all NRC work. The CNWRA PM, P1, and other panicipating staff will be available for teleconferences or face-to-face meetings as needed on the project.

3.1.4.5 Deliverables and Schedule Table 3-7 presents the deliverables associated with task order 05. It is assumed work will be initiated immediately upon a contract award date of May 10,1997 and will extend to completion of the contract on September 26, 1997. In case of necessary delays, the NRC PO will be consulted for establishing new delivery dates.

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Table 3-7. Deliverables for task order 05 Deliverable Delivery Number Deliverable Description Date 8801-005-001 Muscle Shoals Sis Status Report TBD FY97 8801-005-002 Muscle Shoals Site Visit Report TBD FY97 8801-005-003 Adequacy of Muscle Shoals Site Characterization Report TBD FY97 8801-005-004 Muscle Shoals Site Recommendations Report TBD FY97 8801-005-005 Comments on Muscle Shoals Licensee Responses TBD FY97 8801-005-006 Input to Draft Muscle Shoals Safety Evaluation Report TBD FY97 8801-005-007 Input to Final Muscle Shoals Safety Evaluation Report TBD FY97 Figure 3-4 presents the schedule for this task order. This schedule assumes that activity stuts at the time of contiact award on May 10, 1997 and poceeds uninterrupted to completion. In actual execation, it is expected this schedule will need to be modified because of (i) differences between planned and actual date of contract award, and hence, initiation of activities; (ii) uncertainty in scheduling the site visit: (iii) variation in time periods associated with licensee responses for additional information; and (iv) conflicting decommissioning licensing program demands on the NRC and the CNWRA staff.

Modifications will be made by the CNWRA PM in consaltation with the NRC TM and PO.

3.1.4.6 Travel ,

Travel is planned on the basis of one three-person site visit of no more than one-week duration i

to the TVA Muscle Shoals facility (Muscle Shoals, Alabama) to become familiar with the site and to associate material presented in technical reports with observed characteristics of the site. Table 3-8 presents the proposed travel for this task order. Prior to travel, a mutually agreeable date for travel and number and identity of the CNWRA participants will be dctermined by consultation between the CNWRA PM and the NRC TM.

l Table 3-8. Travel requirements for task order 05 i

Fiscal No.of Trip Duration, Year Travelers Days Purpose 1997 3 5 Site visit to Muscle Shoals, Alabama, facilg i

3-26 l

. . - . . . . . - - - m. . - . . _

l May June i J% 4 August l September i Orlober ~[~

27 l 4 l 11 l 18 l 25 1 I8 ! 15 l 22129 j 6 l 14 g y,g % i

! .. I 3 [ 101 17 l~ 24131 1 7 l 14121 I 28 ] 5 l 12 [M_26 W 1 TVA Muscle Snoals, AL 2 Obtae Documents g 3 Reven Documents 4 Sde Status Report $ Site Status Report 6 Sde Vaut g 3 Sde V$d Report Prep g 7 Sde Vist Report $ SiteVisd Report 8 Of 3 Adeq of Cliaractertz Rgd $ Adeq of Charactertz Rpt 10 R - m. Jiamns 11 R-...,. 4.t Report econwnendat R port 12 Add info Request [ m..hys }-

13 Commmts on Response l 14 Comments Report $pors,-ets Report 15 input to Dran SER

)

1s Draft SER Report k att SER Report 17 NRC Comments on I.W [=_=T ===}

13 input to Feal SER ,

Final SER Report 4

19 $ F6nal SER Report l

l Figure 3-4. Schedule for task order 05

o. -

3.2 MODIFICATION OF DECONBIISSIONING MODELS AND PROGRAMS AND INVESTIGATION OF GEOLOGICAL AND HYDROLOGICAL' .

DATA AND TRANSPORT ASSUMPTIONS TO IMPROVE PATHWAY ANALYSIS AND DOSE ASSESSMENT Differing environmental aspects of decommis'sioning. sites and variation of radiological characteristics of contamination among sites coupled , it h newly acquired field data commonly submitted by licensees necessitate modification of models and computer codes to assure adequacy of independent checks of licensee PA analyses. Anticipated specific technical direction under this task order will require the CNWRA to modify existing models and codes to facilitate consideration of complex site-specific geologic, geochemical, and hydrologic conditions when conducting reviews of licensee submittals. The CNWRA will modify codes and models, provide justification for .model and code assumptions, and make recommendations on modifications and requirements for additional field data as required for an existing code or model used for the purpose of pathway analysis and dose assessment for deconunissioning sites.

In addition, th CNWRA may be requested to pro ide technical assistance in evaluating long-term leaching and release of radionuclides from slags resulting from production of metal alloys and DU at decommissioning sites. Task order 04 is unique among the 6ter task orders in the RFP in that it will be c6st plus fixed fee level of effort and may include fee-recoverable work, non fee-recoverable work, or

- both depending on the nature of tasking and particular sites involved.

Descriptions provided in the following section are at the level of individual task order, the lowest level at which costs will be reported. Providing details at this level facilitates additions to or modification of the individual task order and monitoring and management by the designated NRC staff.

Descriptions provided for task order 04 include task order specific objectives, scope, technical approach, staffing and management, deliverables and schedule, aad travel requirements.

3.2.1 Task Order 04: Modeling of Leach Processes at Decommissioning Sites The NRC is regulating the decommissioning of approximately 45 contaminated sites under the SDMP. Technical assistance is required to realistically estimate the long-term release of chemical and radiological contarainants at these sites to aid assesstr.ent of the adequacy of decommissioring regulatory activities.

DJ1 Objnth e The objective of this task is to develop and apply independent methods for estimating release rates of uranium from DU and thorium, uranium, and other chemical contaminants from metal alloy slags. The effects of long term weathering and other processes that may significantly affect the rate of release of radioactive and chemical contaminants from these materials under near-surface oxidizing atxt reducing conditions will be considered. The methods to accomplish these objectives will use available site-sr cific information and provide source term inp it for environmental pathway models.

3.2.7 ,2 Scope The scope of task order 04 consists of developing the technical bases and computational tools to adequately evaluate leaching of radionuclides from DU and metal alloy slags with consideration of site-specific conditions. The scope will include, (i) a literature review which will support definition of 3-28

r subsequent activities; (ii) visits to metal alloy slag sites contaminated with uranium, thorium, and '

. possibility other associated radionuclides; (iii) physsal and chemical characterization of slag samples collected during the site visits to determine properties affecting release of radionuclides, (iv) using the information from previous activities to model leaching of radionuclides at specific sites using existing computer codes. Weathering, hydrology, geochemistry, the nature and distribution of man-made materials constituting the source of radionuclides, and other conditions affecting leaching and environmental pathways will be considered for decommissioning sites containing DU or contammated metal alloy slags. The scope also includes application of information obtained from the four activities described above to provide technical assistance in supporting the decommissioning regulatory process occurring at the sites investigated. This proposal assumes that radionuclide leaching at four decommissioning sites will be evaluated under this task order.

3.2.1.3 Technical Approach Upon the NRC approval of this task order, the CNWRA will initiate a literature review on leaching of uranium from DU and thorium, uranium, and other chemical contaminants from metal alloy slags. The review will include aspects of long-term weathering and other processes that may significantly affect the rate of release of radioactive and chemical contaminants from these materials under near-surface oxidizing and reducing conditions. This literature review will include identification, acquisition, and evaluation of subject materials in pertinent documents. Sources of information will be materials acquired through searches of the Internet, NUDOCS, GEOREF, and other databases accessible through computer-assisted searches. Pertinent items will also be acquired from the NRC staff members, the NRC docket files, and other organizations conducting technical work in the subject area. The literature review will ,

culminate with delivery of a " Literature Review on Leaching of Metal Alloy Slags and Depleted Uranium" (8801-004-001). Subsequent to the CNWRA submittal of the literature review and the NRC ,

initial review of the report, the CNWRA PM and task order PI will visit the NRC headquarters for i discussions of the literature review and approaches best used to accomplish the remainder of this task l order requisites.

This proposal assumes that four decommissioning sites where the source of radiological contamination is metal alloy ores will be visited by the CNWRA staff assigned to this task order. The i

purpose of the site visits is m become familiar with :ach of these slag sites, particularly w regard to characterizing alteration products, weathering conditions, groundwater flow paths, and othei spects of the site important to human and environmental exposure. Such visits will also allow collection of samples for potential charactertzation and use in leach tests. The NRC TM will provide written direction to the l CNWRA identifying decommissioning sites where work will be conducted under this task order prior to  !

initiation of site-related activity by the CNWRA. The technical direction to the CNWRA is anticipated l

to contain the name of the site, whether the activities will be fee-recoverable or non fee-recoverable, technical assignment control (TAC) and docket numbers, and a specific schedule for completion of the j work. The CNWRA will participate in visits to these sites in conjunction with the appropriate NRC staff. l Timing of the visits, nature of trip activities, and participation by the CNWRA staff will be coordinated (

between the NRC TM and the CNWRA PM. Site visit trip report (8801-004-002) will be delivered to

. the NRC within two weeks after completion of the last site visit.

When directed by the NRC TM, the mineralogy / petrology of the contaminated materials will be determined by the CNWRA from company records, literature, and other related irformation. If the characteristics are not available, the CNWRA, when directed by the NRC TM, will perform analyses to ascertain physical and chemical aspects of metal alloy slag samples collected during site visits. Slag 3-29

~

samples will be characterized using facilities and equipment and where possible, methodologies, developed by the CNWRA in technical assistance and research for the NRC. Chemical compositions, minerals, and other phases and texmres will be characterized by an appropriata combination of transmitted and reflected light optical (petrographic and metallurgical) microscopy, x-ray diffraction analyses, x-ray fluorescence analyses, scanrung electron microscopy with energy or wavelength dispersable x-ray analyses and compositional mapping, electron microprobe analyses, and radioanalytical spectrometry. It is recognized that metal alloy slag characterization is being conducted through the NRC Office of Nuclear Regulatory Research and close coordination with Linda Kovach will be required to ensure that activities performal under task order M are complementary and not duplicative. Results of the CNWRA characterization of metal alloy slag samples will be delivered to the NRC as a " Report on Analyses of Slag Samples" (8801-004-003) no later than four weeks following receipt of the NRC technical direction to conduct the work pending availability of samples.

The CNWRA will determine the weathering conditions of the various sites and make estimates of future conditions. Literature reviews of natural analogs for weathering of contaminant material will be considered in the estimation of long-term leaching when this information becomes available. The CNWRA will compare evidence from natural analogs with results of short-term leaching experiments.

The CNWRA expertise in application of natural anahg investigations to nuclear waste issues was developed through a project for the NhC Office of Nuuar Regulatory Research. The CNWRA will be cognizant of leaching experiments con 6cted by Pacific Northwest National Laboratories for the NRC Office of Nuclear Regulatory Research.

The CNWRA will model the teaching process using existing computer codes. " Draft Report on Release Rates for Specified Contaminants from [TBD] Decommissioning Sites" (8801-004-0N) will be written and submitted after modeling the teaching process using existing codes. The NRC will provide comments to the CNWRA on this draft report. " Final Report on Release Rates for Specified Contaminants from [TBD) Decommissioning Sites" (8801-004-005) describing release rates for the NRC specified contammants will be delivered two weeks after the CNWRA receipt of the NRC comments on the draft report.

3.2.1.4 Staffing and Management The CNWRA staff assigned for task order M will have expertise in hydrology, hydrogeology, hydrclogic transport, geochemistry (including radiogeochemistry), and environmental sciences. These staff will have a technical understanding of leaching processes and weathering in near-surface conditions. All participants will also have an understanding of tl e NRC regulatory program and potential applications of the requested task order work to regulatory issues.

Dr. John Russell (Director, WTSO), a geoscientist with extensive technical and regulatory analysis experience, will serve as the CNWRA PM for the decommissioning project. As requested in the RFP, the CNWRA PM will provide the liaison function with the NRC ar.d facilitate the understanding and rapid exchange of the NRC decommissioning policy and information to the CNWRA PI and staff assigned to this task order. The CNWRA PM will coordinate and schedule activities in this task order with the NRC PO and TM as items of high priority. It is expected this will be best accomplished through extensive interactions by the CNWRA PM at the NRC headquarters. These interactions will also be used to obtain guidance on contract execution and procedural requirements irom the appropriate NRC staff and management. Dr. Russell will be responsible for coordinating activities between this task order and the task orders of the decommissioning project and will also assure integration of work. Management 3-30 i

l

1 ,

oversight will be provided by Dr. Budhi Sagar (CNWRA technical director) and Dr. Wesley Patrick

. (CNWRA president).

Dr. David Turner (Senior Research Geochemist). a geochemist with backgrounds in field inves:igations, laboratory experimentation, and computer modeling, will serve as the CNWRA PI for task order 04. He will be responsible for accorr.plishing the task order scope on schedule and within cost. The PI will have frequent contacts with the NRC TM and PO either by telephone or in person. The PI will coordinate input and supporting reviews by the CNWRA staff (geochemists, hydrologists, health physicists, dose / risk assessment staff, environmental scientists, and associated support) as required.

The following additional CNWRA staff menivers have skills necessary to complete task order M and will be used by the PI as necessary: A. Armstrong, P. Mackin, D. Pickett, J. Prikryl, and an expected new hire in the discipline of dose / risk assessment. Additionally, some support may be required for specific areas where the core CNWRA staff do not have expertise. Limited use of consultants in these areas will avoid the necessity of hiring permanent staff to accomplish specific work items. Should this be necessary, the CNWRA has identified some pani.ular individuals and companies that would be I

considered: Mr. Paul Mayo for low-level waste and environmental hazards and Fishbeck, Tnompson, Carr & Huber, Inc. and Raba-Kistner Consultants Jac. for hydrology issues. ,

The task order will be executed under the NRC approved CNWRA QA program and the '

CNWRA APs currently in effect for all NRC work. The CNWRA PM, PI, and other participating staff will be available for teleconferences or face-to-face meetings as needed on the project.

3.2.1.5 Deliverables and Schedule Table 3-9 presents the deliverables associated with task order 04. It is assumed work will be initiated immediately upon a contract award date of May 10,1997 and will extend to completion of the contract on September 26, 1997. In case of necessar" delays, the NRC PO will be consulted fcr establishing new delivery dates.

Table 3-9. Deliverables for task order 04 Deliverable Completion Deliverable Description Date Number 8801-004-001 Literature Review on Leaching of Metal Alloy Slags and 06/16/97 Depleted Uranium 8801-004-002 Sites Visits Trip Reports TBD FY97 8801-004-003 Report on Analyses of Slag Samples TBD FY97 8801-004-005 Draft Report on Release Rates for Specified Contammates 09/01/97 from {TBD] Decommissioning Sites 8801-0M-006 Final Report on Release Rates for Specified Contammates 09/26/97

, from [TBD] Decommissioning Sites 9\u 3-31

Figure 3-5 presents the schedule for this ta:k order. This schedule assumes that activity starts at the time of contract award on May 10, 1997 and proceeds uninterrupted to completion. In actual execution, it is expected this schedule will need to be modified because of (i) differences between planned and actual date of contract award, and hence, initiation of ac:ivities; (ii) uncertainty in scheduling the site visit; (iii) variation in time periods associated with licensee responses for additional information; and (iv) wnflicting deconunissioning licensing program demands on the NRC and the CNWRA staff.

Modifications will be made by the CNWRA PM in consultation with the NRC TM and PO.

3.2.1.6 Travel Table 3-10 presents planned travel for task order 04. Actual travel will be decided in consultation with the NRC TM. The planned travel is based on four one-week trips for two people to four decommissioning sites [TBD] to obtain samples and determine weathering and alteration conditions.

Travel also includes one trip to the NRC headquarters by the PI to participate in presentation of results from the initial literature review and to interact with the CNWRA PM, NRC TM, and the other pertinent

- NRC staff regarding the approach to work on remaining cask order activities.

Table 3-10. Travel requirements for task order 04 Fiscal No.of Trip Duration, Year Travelers Days Purpose 1997 2 5 Site visit to decommissioning site containing metal alloy slag 1997 2 5 Site visit to decommissioning site containing metal alloy slag 1997 2 5 Site visit to decommissioning site containing metal a'loy slag 1997 2 5 Site visit to decommissioning site containmg metal alloy slag 1997 1 2 Principal investigator visit to the Nuclear Regulatory Commission hadquarters at Rockville, Maryland, to present literature review results and discuss approaches to work J

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yl STATEMENT OF WORK l

PROJECT TITLE: TECHNICAL ASSISTANCE FOR RE'/IEWING LICENSEE

SUBMITTALS CONCERNING'DECOMMIS$10NING JOB CODE: J5156 TASK ORDER NO.. TASK ORDER NO. 1 TASK ORDER TITLE: GROUNDWATER ISSUES AT THE AESTINGHOUSE xALTZ MILLS FACILITY NRC PROJECT OFFICER: DANIEL L HUANG .

NRC TECHNICAL MONITOR: LER0Y PERSON. l 4

NRC DECOMMISSIONING SITE PM: RON BELLAMY DOCKET NUMBER: 070200698 TAC NUMBER: (Not yet acsigned)

FEE RECOVERABLE YES 1.0 Backaround In 1961, an accident at the Westinghouse orporatiorJs (the liceruee)

. Waltz Mills reactor in Madison Pennsylvania. resulted in the test 1 reactor being shut down. During cleanup of the test reactor, three holding basins were creatod to process contaminated soil. Despite I extensive cleanup activities. soil aric groundwater on the site remain- )

contaminated. In December 1992. the licensee requested that NRC amend I the test reactor license (L1c, No. TR-2) and the special nuclear i material license to transfer autnorization to process contaminate soil from the test reactor license to the special nuclear. material license (Lic. No. SNM-770). Author _1zation to transfer these holding basins to the SNM license was granted to the licensee in an effort to facilitate  !

l characterization and remediation of the basics under the Site Decommissioning Management Program (SDMP) develcped by NRC's Office of Nuclear Materials Safety and Safeguards.

In an effort to prevent the novement of contaminated groundwater at the site, the iicensee has a pump-and-trtit progran in place and on May 17.

1993, submitten a radiological characterization plan for the site, along with plans for soil and groundwater characterization. The NRC conducted an inspection of the onsite characterization activities on August 31 1993. Following the inspection. the licensee submitted an initial l

Characterization report for the facilities on February 18. 1994. A final groundwater and soil characterization report was also submitted in August 1994. The licensee also submitted a decommissioning plan in September of 1995.

Contamination in groundwater currently exists at the eastern end of the 800 acre site. The primary radionuclide of concern is strontium-90 (Sr-90). The Sr-90 concentrations in groundwater samples are currently measuring as high as 400 pCi/1. although concentrations of cesium-137 (Cs-137) that were elevated initially e.re now below detectable levels.

2LO Ob.iective The ~ objective of this task is to review the site characterization reports and the decommissioning plan submitted by the licensee and  ;

determine whether the licensee has adequately characterized the extent

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~and location of the remaining scil arc voundwater contamination and i l

' determine If the 11censee's recommendecictions a111 assure tnat tre site meets.NRC decommissioning criteria.

3,0 Technical Qualificat1ons Peau 1 red The contractor snall provide the services of a. liaison. geohydrologists.

geochemists. and nealth physicists wno nave an understanding of  :

I groundwater movement, well drilling operations. and the health physics '

concerns of a test. reactor. Also, contractor personnel working on this task must be familiar with the Nuclear Regulatory Commission regulatory process for decommissioning.

40 Level of Effort The estimated level of effort for this task is 0.6 FTE which includes 0.1 FTE for the contractor liaison and is fully fee-recoverable.

50 LPeriod of Performance.

The period of performanc' for this ta n shall be from date of award through September 26. 19 W 6.0 Scone of Work J

l A, The contractor liaison shall consult alth tha NRC Technical Monitor  !

(TM) and other appropriate NRC staff to become familiar with the NRC  !

decommissioning program including its policy directives. guidance and regulations, and the level of technical review required fer l Ilcensing actions. D'e mntractor liaison shall also work with i contractor technical aersonnel assigned to this task to assure that  !

they are familiar wit' NRC licensing guidance and requirements.  !

j The contractor shall conduct a 1 '.3 6 tare search review ng the Site i

B. l Characterization Report and othec associated technical documents ,

regarding the radiological history of the Waltz Mill Test Reactor and associate Cleanup and disposal operations as directed by the NRC l TM. This will include examination and evaluation of the pump and  :

treat operation to remove contaminated groundwater at the site. Tne contractor liaison will need to interact with the NRC project officer and cognizant NRC Region I personnel in order to determme the current status of decommissioning activities at the site. As directed by the TM, the contractor shall prepare a report describing )

the current' extent of radionuclide contamination of soil, structures and groundwater at the site.

C. ;As directed by the TM principal contractor technical personnel working on this program will accompany appropriate NRC technical personnel on a. visit to the Waltz Mill site to become familiar with the site and to associate previously reviewed technical reports with observed physical. site characteristics. The contractor shall prepare a draft ' trip report detalling important technical findings on the site. visit.

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, 10. The contractor shallidetermine it inere is a need for tne 11tensee to perform odditional rad 10 logical cnaracterization of the site ..

lgroundwater'and solls). The contractor shall prepare a draft report which details the adequacy of tne licensee's characterization. in process cleanup. and~remediation activities and recommends to the NRC Si licensee follon up actions, . i f necessary.

to provide ~ additional character 12ation Information to assure Usufficient. site, cleanup.

E. Once a determination has been made regarding the adequacy of the licensee's site characterization studies and pump and treat activities and when directed by the NRC TM. the contractor shall review the licensee's decommissioning plan (DP) to determine if this.

plan, in. concert with ongoing licensee activities. Will be suf ficient to make a determination that the cleanup will potentially result in'the site meeting NRC ard other appropriate Federal and State decommissioning criteria.

F. As directed by the TM. the contractor shall review the licensee's DP and associated technical doc ments in 'egard to the adequacy of their approach to hydrology. geochemistry and health physics, and long term health effects. The contractor' shall make written recommendations regarding NRC's request for additional information-in connection with changes-to the DP. In addition. the contractor shall evaluate the projected impacts of the "no-action alternative" and.the licensee's proposed decommissioning alternative in terms of projected doses to workers and the public.

G When directed by the TM the contractor shall review and provide NRC comments on the licensee responses to NRC's request for additional information on the DP or other technical documents as specified by the-TM.

H. When directed by the TM. the cor ractor @all prepare a draft safety evaluation report (SER) of reyw competency review areas for the Waltz Mill site.

7.0 Schedule for Deliverables The following is a schedule for submission of the reports referenced in section 6 above:

Deliverables hg_Date i

Item B." Site Status Report" 2 weeks following receipt of

" documents

-Item C " Site Visit Report" 1 week'following site visit item D " Adequacy lof Characterization" 2 weeks following site visit Item F " Recommendations Report" 4 weeks following site visit

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I item.G " Comments :n licensee Responses" 2 <.eets fol <a r g re':r y .

• responses Iten H Draft " waltz Mill SER" 4 <.ee s fo i :cwing F ina, c ments and responses Final " Waltz Mill SER" Aithin 30 days foliowing receipt of NRC comments unless a shorter period of time is specified by the TM 8.0 Meetinas and Travel One:three-person site visit'of one week duration will be held at the Waltz Mills facility (New Stanton. PA) for the purpose indicated in 6(C)

-dbove.

9.0- NRC Fornished Mate;1al NRC will provide the contractor with a list of licensee reports.

guidance documents. and applicable regulations for review. Any requested i1censee documents available from the license file will also  ;

I De provided within 7 days of the contractor's request.

10.0 Technical Direction  !

LeRoy S. Person is designated as the technical monitor for this task.  !

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STATEMENT OF e,0RK PROJECT'T!TLE: TECHNICAL ASSISTANCE FOR REVIEWING LICENSEE SUBMITTALS CONCERNING DECOMMISSIGNING JOB CODE: J5156 TASK ORDER NO.. TASK ORDER NO. 2 TASK ORDER > TITLE: PERFORMANCE ASSESSMENT ANALYSIS IN SUPPORT OF THE JEFFERNN PROVING GROUND ENVIRONMENTAL IMPACT STATEMENT DEVELOPMENT NRC PROJECT OFFICER: DANIEL T. HUANG NRC TECHNICAL. MONITOR: LEROY S. PERSON NRC DECOMMISSIONING SITE PM: LARRY PITfIGLIO DOCKET NUMBER: 40 8838 TAC NUMBER:' L51201 FCE RECOVERABLE NO 1.0 B

__ackaround The U.( Army Jefferson Proving Ground (JPG) is a former test facility used to evaluate and test ammunitian and military components from 1941

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to 1994. The site covers approximately 55.000 acres and is located in Madison. Indiana. On December 16. 1983, the U.S. Army at JPG obtained a license (license # SUB-1435) to utilize e portion of the JPG site for testing depleted uranium (DU) penetrators and munitions. The U.S. Army received, stored, and fired DU munitions at the site during the period December, 1983 to September. 1994.

Under the Defense Author 1zetion Amendments and Base Realignment and Closure Act of 1988 (Public Law 100-526). JPG had to be closed by September 30, 1995. The U.S. Army informed the NRC of its intent to terminate its NRC license. The U.S. Army requested an exemption to the requirement of cleaning up the DU impact area for unrestricted use.  ;

This request was based largely upcn the potential hign risks and high I costs due to the presence of unenioded ordinance (UXO's) locWd in the l DU 1mpact area.

NRC has determined that approval of the licensee's request would constitute a major federal action. Therefore, the NRC must prepare an environmental impact statement (E!S), in accordance with the National Environmental Policy Act of 1969 (NEPAT and the NRC's implementing regulations in 10 CFR Part 51. On April 10. 1995, the NRC published in the Federal Register (60 FR 1865) a Notice of Intent (NOI) to prepare an EIS for the decommissioning of JPG. The NOI identified four alternatives to be considered including the no action alternative. The licensee's proposed action is to release the DU impact area with land use restrictions compidible with the use of the area as a wildlife i refuge. The. depleted uranium would be allowed to remain on site.

Appropriate institutional controls would be imposed to ensure the durability of the land-use restrictions.

A performance assessment (PA) analysis is needed to evaluate potential long-term human health effects from exposure to radiological and chemical contaminants within the DU impact area. The PA analysis will

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consider exposure from all' viable patnways both w'th land-use restrictions ano. at some point. altnout land-use restrictions. Ine'PA  ;

analysis will assess impacts for all decommissioning alternatives tn5:. i are considered viable. Results from the PA analvsis will be used as part of the basis in the EIS for assessing potential human hea'th l effects.

Key components-of the PA analysis will be (1) determination of the source term (including source concentrations and infiltration rates):

(2) development of conceptual models: (3) identification of appropriate '

pathways and receptor locations (including developing appropriate exposure scenarios): (4) modeling release and transport of radionuclides i and chemicals along various environmental pathways; (5) determining human health consequences; and (6) evaluating sensitivity and uncertainty within the analysis. The source term determination and i conceptual model development needs to be completed early on so that this information can be shared with pecple involved in other aspects of the l Els (e.g., hydrologic and short-term human health impacts). )

Deriving a source term for the JPG site will requice .ssessirg t!'e potential long-term degradation of the DU penetrators. Further.

deriving the concentration of DU to be used in the PA analysis sill De l l

complicated by the fact that the DU penetrators are scattered over a large area, at multiple depths. J The environmental transport analysis will require consideration of  ;

transport of both dissolved and undissolved contaminants in ground water 1 and surface water botn onsite and off the proving ground. Tne l hydrogeology at the site is a karst environment, with sinkholes l scattered throughout.the area. l 1

2.0 Oblective The obaective c' this task is to t nduct performance assessmect analyses to evaluate potential long-term human health effect in implementing the varicus alternatives to be considered in the environmental impact statement for decommissioning the site.

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3.0 Technical Qualifications Reouired 1 I

The contractor shall provide the ervices of a liaison hydrogeologists.

geochemists, and health physicists who have an understanding of performance ossessment analyses. In particular. individuals will be needed with knowledge in the area of waste degradation, environmental transport, scenario selection, conceptual model development, health i l

consequences, and uncertainty / sensitivity analyses.

4.0 Level of Effort 4

The estimated level of effort for this task is 0.6 FTE of which 10% is estimated for the contractor liaison.

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4 y 5.S Nelod of per fccmanro The perica of performance for this task snall begin en the date of execution of the task order and continue througn September 26. 1997 60 g one of nom A. The contractor liaison shall consult with the NRC Decommissioning Site Project Manager to become familiar with available s'te information and the EIS development schedule.

B. The contractor shall review pertinent site information on Jef ferson Proving Ground to become familiar with the physical features of the site. In addition. the contractor shall review applicable regulations and policy guidance on decommissioning and environmental impact statements.

C. When directed by the TM. principal contractor technical personnel working on this program will ac'omoany appropriate NRC technical staf f on a visit to Jefferson i. wing Ground to become familiar with the site. .Thr. contractor small prepar e a trip report on the site visit.

D. The contractor shall prepare a list of data needs to cctplete the analysis.

E. The contractor shall provide a report describing the source term. #

conceptual model(s). and overall approach to be used in the performance assessment analysis.

F. After review the contractor shall conduct the performance assessment or as directed by tho NRC TM, provide a final report descr1b'ng the source term. cor eotual model(s) results and overall approach used in the P/ Pialysis.

G. The contractor shall provide a report describing the PA analysis with results on the long-term human health effects and the sensitivity and uncertainty of the results.

7.0 Schedule for Deliverables The following is a schedule for submission of the reports described in section 6 above:

Deliverables Schedule item C " Site Visit Report" 1 week following site visit Item 0 " list of data needs" 4 weeks following site visit Item E " Draft report on source termt 10 weeks following receipt of data needs u

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' Item F "Finsl report.on source term" 1 weeks following receipt of comments Itemi G "PA' analysis' '2 weeks follo,.ang.

Suomission of final-source term report

8. 0 Meetinas and Travel One four-person site visit _of one. weeks duration will be held at the ';Ti~

. site-(Madison. Indiana) for the purpose indicated in 6(C) above. TheseL

'four: individuals may'be also' req' uired to accompany NRC staf f in presenting the draft environmental impact statement at a public meeting in the vicinity'of the1JPG site (estimated to be a one week trip).

90 NRC Furnished Material NRCLwill provide copies of all availavle reports relating to the JPG I I

site. --NRC will provide a list of guidance documents. and app licable i regulati.ons for contractor review.

10.0 : Technical Direction LeRoy S. Person is designated as' the technical monitor for this task. .

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c STATEMENT OF.7,0RK 9

PROJECT TITLE: TECHNICAL ASSISTANCE FOR REVIEWING LICENSEE SUBMITTALS CONCERNING DECCMMISS10NING JCB CODE: J5156 TASL ORDER NO.. TASK ORDER NO J TASK ORDER TITLE. MODELING OF LEACH PROCESSES AT DECOMMISSICNING SITES NRC PROJECT OFFICER: DANIEL T. HUANG NRC TECHNICAL MONITOR: LER0Y PERSON NRC PRINCIPAL TECHNICAL LEAD: JOHN L'RADBURY DOCKET NUMBER: (Not yet assigned)

TAC NUMBER: (Not yet assigned)

FEE RECOVERABLE: DEPENDS ON TASK 1.0 Backaround

.The NRC is regulating the decommissioning of 46 contaminated sites under

• he Site Docommissioning Management Plan (SDMm In order to aid the-assessment or the adequacy of these decommissioning efrorts. tecnnical assistance'is required to realistically estimate the long-term release of chemical and radiological contaminants to these site environs.

2.0 Oblective The objective of this task is to develop and/or apply independent  ;

methods for estimating release rates of uranium from depleted uranium metal and thorium, uranium, and other chemical contaminants from metal alloy Sldgs. These methods should include consideration of long-term weathering and other processes that may significantly affect the rate of release of radioactive and chemical contaminants from these materials under near-surface oxtdizing and reducing conditions. The methods should utilize readily available site-specific information. The results of the metiods will provide the sourct term it ?ut for environmental pathway models.

3.0 Technical Quali fications Reauired The contractor shall provide the services of a liaison, geochemists and hydrologists who have an understanding of leaching processes and weathering in near-surface conditions.

4.0 Level of Effort The estimated level of effort for this task is 0.55 FTE of which 10% 1s estimated for the liaison.

5.0 Period of Performance The period of performance for this task shall begin on the date of execution of the task order and continue through September 26, 1997.

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,g 6,0,.@oce'ofwork A. :At~the time that a specific cecommissioning site (s) is ident'fie3.

the NRC. technical monitor will provide written direct!cn to the contractor (with copies'to t.he NRC Contracting Officer and NRC

,- Project Of. a r) containing the name of the site. ahether the site is fee-recoverable or non fee-recoverable. the tac and docket numbers, and a specific schedul.e for comM etion of the work at-that site. The contractor shall visit t1e named site (s) '#ith the purpose of characterizing alteration products, weatheri.ng conditions, groundwater flow paths and other aspects of the site important to human and environmental exposure.

4 B. When. directed by NRC the contractor shall ascertain the mineralogy / petrology of the contaminated materials. as specified

< by 'RC, from company records 19erature etc. If tne characteristics are not availabie. the contractor. when directed '

by the NRC TM. shall perform analyses to determine physical-and Cherical aspects of the Waste. Some characterization work is

' being done at NRC and close w cr.ination v,il' be required to ensure that this task is complimentary and not duplicative.

C. The contractor shall determine tre neathering conditions of the site and make estimates concerning future conditions.

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D. Literature reviews of natural analogs of weathering contaminant ,

material will be considered in the estimation of long-term (

leaching when this information is available. .

E The contractor shall compare evidence from natural analogs with l results of short-term leach experiments.

F. The contractor shall model the 'aaching process using existing Cod +

7.0 Reoortinq.Reauirements The contractor shall provide a written draft report, entitled, " Release Rates for Specified Contaminants from (name of decommissioning site)."

two weeks after modelling the leaching process as required by item 6(F) above. NRC will provide comments to the contractor on the draft report.

A final. written repe t, describing release rates for the NRC specified contaminants (as required in item 6(B)) shall be provided two weeks after receipt of NRC comments on the draft report.

.-8.0 ' Schedule for Comolet1na items in Section 6 Review literature on leaching of metal alloy slags and depleted uranium

~3 weeks Coriduct analysis o_f slag samples and submit results - 4 weeks Visit sites listed by the NRC - 1 week

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, d) o Meet nito hRC staff to discuss appreach *ar completing task - 2 days Perform model calculations using easting codes 2 months 9.0 Meetinas and Travel The contractor may be required to travel to decommissioning sites to obtain samples and note weathering and alteration conditions. For pricing purposes. the contractor shall assume that there will be four one week trips for two people to the decommissioning sites. The contractor liaison shall visit NRC headquarters for a meeting to discuss approacnes to be taken to complete the task. This meeting should occur after the initial literature review.

10.0 NRC-Furnished Materials

a. The NRC will provide the contractor with the name of the decommissioning sites to visit with the purpose of characterizing ilteration products. weathering conditions. groundwater flow paths an1 other aspects of the site important to human and environmental

e. .ure (See item 6 0.

D. The NRC will provide the contractor with pertinent licensee reports.

11.0 Technical Direction LeRoy S. Person is designated as the technical monitor for this task.

NOTE: This is a level of effort type of task order. l l

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[gbe m j. MONTHLY' LETTER: STATUS REPORT REVIEW. COMMENTS'

FIN:. [ Number]

TASK: , [ Number]

MONTH

- . . . .

'[0f MLSR] . .

1

DATE SUBMITTEDi [ByJthe contractor]

DATE RECEIVEDi [By the: Technical Monitor)- w DATE REVIEWED:n -[By the Technical _ Monitor]. - t thcdssion!

?Thistsection should address. as'a minimum, the.following topics:  !

1' . .- LComments on the work status as reported. [For example, does the report

accurately reflect the work known to have' been. performed during the -

-reporting period.] ,

t2. Consistency between the direct costs expended during the month and the  !

work?erformed.: [For example, are the labor hours, travel, subcontract.

equipment, and other direct costs reasonable and commensurate for the {

type of work performed during the reporting period?]

3. ' Comments. if any, on accuracy of financial data reported. ,

4 '. Comparison of funds expended'_to level. of effort (LDE) expended:

Total Project-Authorized Amount' Expended: 4 '

Total-L0E Expended:  %

5 .' Problems; reported by the contractor and: actions-taken to re' solve: and noted by tPC staff-and actiod taken to resolve. [For e" ample, is the quality of the deliverables and/or services acce compliance witt' the terms of the statement of work? ptable and in Did the contractor submit required' deliverables and meet scheduled milestones during the reporting period? Has NRC met its contractual obligations 'during the reporting period? Are there any present or future' problems that may adversely affect contractor performance and/or costs?]-

g Recommendation (sfi

{This'section'shouldtinclude recommended ' action by the assigned ProNct Officer

'.to resolve.noted problems.

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~ Attachment 32 4 , ,

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