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Lawrence Livermore <br /> National Laboratory <br /> July 11, 1994 <br /> Mr. Doug Wilson <br /> Public Health Services of San Joaquin County <br /> Environmental Health Division <br /> P. O. Box 2009 <br /> Stockton, Ca 95201 <br /> Subject: Underground Storage Tank Unauthorized (Leak)/ <br /> Contamination Site Report, Tank 805-D1U1 at Building 805 <br /> Attached is an Underground Storage Tank Unauthorized Release (Leak)/ <br /> Contamination Site Report for tank system 805-D1U1 at Lawrence Livermore <br /> National Laboratory (LLNL) Site 300. <br /> Underground storage tank 805-DlUl at Building 805 was a 280 gallon single-wall <br /> carbon steel tank that supplied diesel fuel to the Building 805 standby generator. <br /> On June 22, 1994, the tank system was closed and the tank was removed from the <br /> ground. Soil samples collected from within the excavation and from the soil <br /> removed from the excavation were submitted for analyses of TPH-D (diesel fuel) <br /> and BTXE (benzene, toluene, xylene, and ethylbenzene). On Friday, July 1, the <br /> results of analyses were received from the Quality Assurance Office of the <br /> Environmental Management Technologies Section, LLNL Environmental <br /> Protection Department, after having been reviewed and approved. Bill Snavely of <br /> your office was notified of these results via telephone on the same day. <br /> The soil sample collected from the excavated soil and fill gravel showed 7.4 mg/kg <br /> diesel fuel in soil, according to the TPH-D analysis. The BTXE analysis showed <br /> "ND" (not detected). A soil sample was also collected within the excavation at a <br /> depth of eleven feet. Analyses showed "ND" for both TPH-D and BTXE. <br /> -:n Ecuai Ocoonunit.vEmoiover•Universnv of Ca,ifomla•P.O.Box 808 Livermore.CA 94551-9900•TeleDnone(510)=:22-1100 •T-.vx 910-386-8339 UCLLL LVMR <br />