ML20129A443

Describes Util Plans for Demonstrating That Liquid Effluent Pathway & Surrounding Open Land Areas Satisfy 10 Mrem/Yr Criteria Provided in Plant Final Survey Plan

ML20129A443
Person / Time
Site:	Fort Saint Vrain
Issue date:	09/11/1996
From:	Borst F PUBLIC SERVICE CO. OF COLORADO
To:	Weber M NRC (Affiliation Not Assigned), NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20129A449	List: ML20129A443 ML20129A462
References
P-96068, NUDOCS 9609180237
Download: ML20129A443 (2)

Text

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16805 WCRservice' 191/2; Platteville, Colorado 80651 September 11,1996 Fort St. Vrain P-96068 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 ATTN: Mr. Michael F. Weber, Chief Decommissioning and Regulatory Issues Branch Docket No. 50-267

SUBJECT:

Proposed Sampling and Survey Plan for Efnuent Pathway, Fort St. Vrain Final Survey Program

Dear Mr. Weber:

This letter describes Public Service Company of Colorado's (PSCo) plans for demonstrating that the liquid effluent pathway and surrounding open land areas satisfy the 10 mrem / year criteria provided in the Fort St. Vrain (FSV) Final Survey Plan, and requests NRC approval of a revised sampling and survey plan for this area.

The FSV Final Survey Plan addresses the liquid effluent pathway as part of open land areas and does not provide more specific requirements for this area. PSCo and our decommissioning contractor, the Westinghouse Team / Scientific Ecology Group (WT/SEG), consider that a specific sampling and survey plan is appropriate for the liquid effluent pathway because it has been well characterized and can be reasonably divided into areas with different contamination potentials. During operational and decommissioning releases, over 1000 characterization samples / measurements were taken.

Based on the measurement results, PSCo and the WT/SEG consider that the liquid effluent pathway and surrounding areas can be divided into three survey levels, with reduced sample frequencies, survey frequencies, and scan requirements appropriate for the potential for contamination.

The proposed survey treatment for the FSV liquid effluent pathway is described in a /

WT/SEG Technical Basis Document (TBD), Final Survey Requirementsfor the Liquid I Egluent Pathway, FSV-FRS-TBD-209, attached to this letter. This TBD describes the specific sampling and survey plans, the historical characterization efforts, and the 9609180237 960911 PDR ADOCK 05000267

9. PDR o

P-96068 September 11,1996 Page 2 technical and ALARA justification for the proposed survey treatment. The site-specific guideline values for residual concentrations of radionuclides in soil and water, and the RESRAD computer code used to derive them are also described.

PSCO and the WT/SEG consider that the sampling and surveying program described in the attached TBD, developed specifically for the FSV liquid effluent pathway and surrounding areas, represents a conservative survey effort at a cost savings of approximately $1,000,000 compared to current requirements for affected open land areas, and is in accordance with sound ALARA principles. To meet our project schedule commitments, PSCO and the WF/SEG have initiated final survey efforts based on this approach, and we request NRC approval as soon as reasonably practicable. We acknowledge that survey efforts for these packages are being undertaken at our risk and we note that survey documentation packages can be supplemented or modified prior to submittal to the NRC, to insure resolution of any comments.

If you have any questions regarding this information, please contact Mr. M. H. Holmes at (303) 620-1701.

Sincerely, Nd&dy 18Y Borst FredericW}ioning Decommiss Program Director P

, Attachment FJB/SWC cc: Regional Administrator, Region IV Mr. Robert M. Quillin, Director Radiation Control Division Colorado Department of Public Health and Environment t

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