ML072400562

ORISE-Oak Ridge Institute for Science and Education, Revision to Analytical Results for Three Soil Samples Associated with the Rancho Seco Nuclear Generating Station, Herald, California

ML072400562
Person / Time
Site:	Rancho Seco
Issue date:	08/14/2007
From:	Condra D Oak Ridge Institute for Science & Education
To:	Garcia E NRC/RGN-IV/DNMS/FCDB
References
RFTA 06-003 IR-07-003
Download: ML072400562 (2)

Text

-4~ig~ist 11. 3007 hh. Eido Garcia L.S. Nuclear Regulatoi3- Coiiiinissioii R-IV/DNfilS/I;CDE/N Suite 400 6 1 1 Ryi Plaza Dm-e Arhigtoii, Ts 7601 1

SUBJECT:

REVISION TO ANALYTICAL RESULTS FORT OIL s ASSOCIATED WITH THE RANCHO SECO NU GEN G , CALIFORNIA N REPORT #005000312~2007003)

[RFTA NO. 06-0031

Dear Ah. Garcia:

The Oak hdge Iiistimte for Scieiice and Education (ORISE;) received thee soil saiiiples associated n-ith the Raiicho Seco Nuclear Geiieratiiig Statioii in IHerald, Califoriiia oii JLiiie 3, 2007. At your request, the soil saiiiples rere aiialyzed b!- gaiiiiiia specwoscopp (GS) for cobalt-60 (Co-6@), cesium-137 (Cs-137), aiid -4mericiuiii-241

(-hi-241).

The soil saiiiple ideiitificauoiis are listed in Table 1 aiid the GS data are preseiited hi Table 2. The pertiiieiit procedure references are pro~-ided in die tables. ORISE's Quahty Coiiuol (QC) requiremeiits n-ere met for these aiialj-ses.

The QC files are andable for your rewx upoii iequest. In the origiiial letter report dated JLI~J- 12, 3007, pCi/L as used as [lie reportiiig units for soil saiiiple conceiiuadoiis in Table 2. The correct reporciiig uiiics of pCi/g hai-e been 110~x7 been iiiserted hito Table 1. \\-e apologize for an!- incoiimnieiice this reporciiig error may liai-e caused. h1~- contact lllforiiiation is listed below. You iiiaj- also coiitact \Yade IT-ey at 865.576.9184 n-idi an!- questions or coiiiiiieiits.

Sin cerelj-, Dale Condra, Alaiiager Laborator3-RDCI\KPI:ar Eiiclosures C: T. Caiter. NRC/FSALE/D\TIlEP 7JlS E ;IbeIquis t, ORISE E IGioz-D ai-iii. NRC / FSh [E /TKFN SA 133 File 1695 S. Roberts. ORISE 1 Distribution approval arid concurrence:

1 Initials I T'oice: S63.211.3242 Fas: S6S.24 1.3345 E-mad: r>nle.Coi?diai~oiflu.org TABLE 1 ORISE Sample ID SAMPLE IDENTIFICATIONS AND COLLECTION DATA RANCHO SECO NUCLEAR GENERATING STATION HERALD, CALIFORNIA Collection Time PDT Collection Date NRC Region IV Sample ID 1695S0010 ~ ~~~ 11 1695S0008 I NRC-1 I 6/27/2007 I 1222 F8991091SOOS2SS 6/26/2007 6:56 11 1695S0009 I NRC-2 I 6/27/2007 I 13:30 1695S0008 1695S0009 1695S0010 NRC Region IV Radionuclide Concentrations (pCi/g)

Sample ID CO-GO CS-137 Am-241 NRC-1 0.00~ rt 0.02b , 0.03~ 0.02 zk 0.02 , 0.02 0.02 rt 0.03 , 0.04 NRC-2 0.57 If: 0.08 , 0.05 41.8 f 1.4 , 0.07 0.00 rt 0.09 , 0.13 F8991091SOOS2SS 2.61 zk 0.12 , 0.04 18.05 rt 0.60 , 0.05 0.07 f 0.06 , 0.06 TABLE 2 CONCENTRATIONS OF SELECTED GAMMA EMITTING RADIONUCLIDES IN SOIL SAMPLES BY GAMMA SPECTROSCOPY, CP1, REVISION 15 RANCHO SECO NUCLEAR GENERATING STATION HERALD, CALIFORNIA ORISE Sample ID .~%cro values arc duc to rounding. "Uncertailitics rcpreseiit the 95% confidcncc lcvcl, based on total propagated unccrtaintics cMDCs arc after thc comma. liancho Scco Nuclear Generating Station Projects\16Q5\lieports\

1695-LR-001-l.doc