IR 05000312/2004004

Addendum to NRC IR 05000312-04-004; 07200011-04-004; Sacramento Municipal Utility District, Rancho Seco, Analytical Results for Soil Samples, 01/24/2005

ML050240442
Person / Time
Site:	Rancho Seco, 07200011
Issue date:	01/24/2005
From:	Spitzberg D NRC/RGN-IV/DNMS/FCDB
To:	Shetler J Sacramento Municipal Utility District (SMUD)
References
IR-04-004
Download: ML050240442 (9)

Text

UNITED STATES NUCLEAR R E G U L A T O R Y C O M M I S S I O N ary 24, 2005

SUBJECT:

ADDENDUM TO NRC INSPECTION REPORT 050-00312/04-004~

072-00011/04-004; ANALYTICAL RESULTS FOR SOIL SAMPLES

Dear Mr. Shetler:

This letter presents the results of laboratory analyses of soil samples collected from beneath the spent fuel pool floor of the Rancho Seco Nuclear Generating Station between October 25 and 28, 2004. The analyses were conducted by Oak Ridge Institute for Science and Education (ORISE), Environmental Survey and Site Assessment Program, on behalf of the NRC. The NRC's analysis of the sample results is provided in Enclosure 1 to this letter and a copy of the ORISE report is provided in Enclosure 2.

Other than comparing the enclosed results with the split samples that were collected by your staff at the same time, no response is requested from you at this time. The NRC may conduct an integrated evaluation of the ORISE sample results with your split sample results in the future. If so the results will be included in a future inspection report.

In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter, Enclosures 1 & 2, and your response (if any) will be made available electronically for public inspection in the NRC Public Document Room or from the NRC's document system (ADAMS),

accessible from the NRC Web site at httD://www.nrc.qov/readinq-rm/Adarns.html. To the extent possible, your response should not include any personal privacy, proprietary, or safeguards information so that it can be made available to the public without redaction.

Please note that on October 25, 2004, the NRC suspended public access to ADAMS, and initiated an additional security review of publicly available documents to ensure that potentially sensitive information is removed from the ADAMS database accessible through the NRC's web site. Interested members of the public may obtain copies of the referenced documents for review and/or copying by contacting the Public Document Room pending resumption of public access to ADAMS. The NRC Public Document Room is located at NRC Headquarters in Rockville, MD, and can be contacted at 800-397-4209 or 301-415-4737 or pdr@,nrc.qov.

Sacramento Municipal Utility District -2-If you have any questions concerning this letter, please contact Mr. Emilio Garcia, Health Physicist, at (530) 756-3910 or the undersigned at (817) 860-8191.

Sincerely, D. Blair Spitzbefg, Ph.D., Chief Fuel Cycle and Decommissioning Branch Docket No.: 50-312 License No.: DPR-54

Enclosures:

1. NRC Analysis of Sample Results 2. ORISE Report

REGION Concentrations'

Sample ID N Sample ID (pCUg)

CO-60 . CS-137 163680002 SB8120070DS01 0.04 f0.03" 0.86 f 0.07 163630004 SB812007ODSO5 0.02 * 0.02 0.06 f 0.02 163680006 SB8120070DS10 O.OOc*0.01 0.09 * 0.02 163630008 SB8120070DS14 0.01 f 0.01 0.09 f:0.024

ORISE TABLE 2 CONCENTRATIONS OF TRITIUM (H-3) AND CARBON-14 (C-14)

BY LIQUID SCINTILLATIONANALYSIS PROCEDURE AP6, REVISION 14; PROCEDURE CP4, REVISION 3 RANCHO SECO SMUD 11/04 -

HERALD,CALLFtORNLA

"TIC average MDC for H-3IS 5.6 pCYg wet weight and for C-14 is 3.2 pCi/g wet weight.

buncertaintiesrepresent the 95% confidence level, based on total propagated uncertainties.