IR 05000312/2004004
| 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
January 24, 2005
SUBJECT:
ADDENDUM TO NRC INSPECTION REPORT 050-00312/04-004~
072-0001 1/04-004; ANALYTICAL RESULTS FOR SOIL SAMPLES
Dear Mr. Shetler:
October 25, 2004
SUBJECT:
ANALYTICAL RESULTS FOR SOIL SAMPLES COLLECTED OCTOBER 25 AND 28,2004 FROM RANCHO SECO - SMUD, HERALD, CALIFORNIA (INSPECTION REPORT #50-312/2004-04) [RFTA NO.
05-001]
Dear Mr. Atwater:
The Environmental Survey and Site Assessment Program (ESSAP) of the Oak Ridge Institute for Science and Education (ORISE) received eight soil samples on November 2,2004 that were collected from October 25,2004 through October 28,2004 at Rancho Seco - SMUD. Four of the samples were received in Marinelli beakers and were analyzed for cobalt-60 and cesium-137 by gamma spectroscopy (GS) (Procedure CP1, Revision 14). The remaining four samples were received in scintillation vials and were analyzed for carbon-14 and tritium by liquid scintillation analysis (LSA) (Procedure AP6, Revision 14; CP4, Revision 3). The GS and LSA data are presented in Tables 1 and 2, respectively.
ESSAP's Quality Control (QC) requirements were met for these analyses. The QC files are available for your review upon request.
This Ietter report was delayed due to problems with the counting and processing instrumentation used in the carbon-14 and tritium analyt~cal process. We apologize for this delay and hope that the delay has not placed an undue burden on your report process.
P. 0.
BOX 1 17, OAK RIDGE, TENNESSEE 3783 1-0 1 17 Opemted by Oat Ridge Associated Universities for the US. Department of Energy
Mr. Scott Atwater-2-January 12, 2004 Distribution approval and concurrence:
Technical Management Team Member Quatity Please contact me at (865) 241-3242 or Wade Ivey at (865) 576-9184 with any questions or comments.
Initials.
Sincerely, Dale Condra Laboratory Manager Environmental Survey and Site Assessment Program RDCIWPI:iU Enclosure cc:
T. McLaughh, " M S S / T W F N 7F27 E. Knox-Davin, NRC/NMSS/"
T8A23 E. Garcia, NRC Region N E. Abelquist, ORISE/ESSAP T. Vitkus, ORISE/ESSAP File/l636
ORISE TABLE 1 ESSAP Sample ID 163680002 163630004 163680006 163630008 SELECTED GAMMA EMITTING RADIONUCLIDE CONCENTRATIONS IN SOIL SAMPLES BY GAMMA SPECTROSCOPY PROCEDURE CP1-REVISION 14 RANCEO SECO - SMUD 11/04 H E W, CALrFORNIA Radionuclide NRCREGION Concentrations'
N Sample ID (pCUg)
CS-137 SB8120070DS01 0.04 f 0.03" 0.86 f 0.07 SB812007ODSO5 0.02 * 0.02 0.06 f 0.02 SB8120070DS10 O.OOc* 0.01 0.09 * 0.02 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 SCINTILLATION ANALYSIS PROCEDURE AP6, REVISION 14; PROCEDURE CP4, REVISION 3 RANCHO SECO - SMUD 11/04 HERALD, CALLFtORNLA
"TIC average MDC for H-3 IS 5.6 pCYg wet weight and for C-14 is 3.2 pCi/g wet weight.
buncertainties represent the 95% confidence level, based on total propagated uncertainties.