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Underground Storage Tank Removal Report Page 4 <br /> 320 W. CENTER STREET March 25, 2011 <br /> WKA No. 9041.01P <br /> submitted for the unknown product analyses as described in Table 2 of the SJCEHD Application <br /> for Underground Storage Tank Closure Permit. Each sample was analyzed for the following: <br /> o Total Petroleum Hydrocarbons as diesel (TPHd) using EPA Method 8015M; <br /> o Total Petroleum Hydrocarbons as Gasoline (TPHg), benzene, toluene, <br /> ethylbenzene, total xylenes (BTEX) using EPA Method 8260B; <br /> o Fuel Oxygenates: methyl-t-butyl ether(MTBE), diisopropy'1 ether (DIPS), ethyl-t- <br /> butyl ether(ETBE), tert-amyl methyl ether(TAME), ter -butanol (TBA), 1,2- <br /> dichloroethane (DCA) and 1,2-dibromoethane (EDB) using EPA Method 826013; <br /> o Chlorinated Hydrocarbons using EPA Method 8260; <br /> o Waste Oil Metals using EPA Method 6010; and. <br /> o PCB using EPA Method 8082. <br /> 4.0 FINDINGS <br /> Results of constituents that were analyzed above laboratory reporting limits are presented in <br /> Table 1. The full list of analyzed constituents and reporting limits is included in the copies of the <br /> laboratory data sheets for soil analytical results tiom this assessment (Appendix C). <br /> Table 1 <br /> Soil Anal tical Results <br /> Concentrations Reported in Parts Per Million(ms/kg) <br /> Total <br /> Lead Nickel Zinc TPHd TPHg Xylenes <br /> Chromium <br /> S-I-STK to 4.7 9.3 66 7.6 < 1.0 <0.0050 <br /> S-2 --,v LJ 6.8 28 16 ' 1.0 <0.0050 <br /> S-3 '-,4 1.3 7.1 29 <1.0 < Lo <0.0050 <br /> S-4-STK /2 3.7 _ 11 42 340 1.3 0.0052 <br /> ESL ong/kg)* 750 200 150 600 83 83 33 <br /> 'ESI.=Enviratmental Screening[evels esfA]ish d by San Francisco Bar Regional Boards Water QuaIih Control Board(I able A)Residential <br /> land use for Shallow Soils(<,in hes)Groundwater Is Current or Potential Source of Drinking Water <br /> 5.0 CONCLUSIONS <br /> The reported TPHd concentrations in soil sample S-2 collected from the eastern vertical extent of <br /> the UST excavation was compared to the Revised May 2008 Environmental Screening Levels <br /> (ESLs) for TPH (middle distillates) for soil in a residential setting where groundwater is current <br /> or potential source of drinking water, as published by the San Francisco Bay Region office of the <br /> Regional Water Qualitc Control Board (SFRWQCB). The SFRWQCB de%eloped ESLs as a �`� <br />