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r <br /> Petroleum Hydrocarbons as diesel (TPHd), Total Petroleum Hydrocarbons as gasoline <br /> (TPHg), Benzene, Toluene, Ethyl benzene and Xylene (BTEX), Lead scavengers (1,2- <br /> r DCA and EDB), and Oxygenates Including Ethanol and Methanol Samples were <br /> analyzed by Kiff Analytical of Davis, California, a Department of Health Services <br /> (DHS)-certified laboratory <br /> r 3.0 LABORATORY ANALYTICAL RESULTS <br /> The highest detection of MTBE encountered was 720 ppb found in MW-2, located <br /> northeast of the former tank pit on the northern boundary of the subject property The <br /> second highest detection of MTBE was 150 ppb found in groundwater monitoring well <br /> MW-1 located in the former tank farm excavation TAME was also detected in wells <br /> MW-1 and MW-2 The following table shows the detections in this monitoring event <br /> and the previous monitoring events TPH as diesel was detected in MW-4, at a level <br /> of 170 ppb <br /> TABLE <br /> SUMMARY OF GROUNDWATER ANALYTICAL RESULTS <br /> TOTAL PETROLEUM HYDROCARBONS BTEX and MTBE <br /> ALL RESULTS ARE IN ug/L <br /> 1'I�� Dale <br /> wait TOM PETROLEUM AROMATIC VOWILE DRGANIC AND OXYGENATES <br />' Welt Collected HYDRDCARBONS <br /> GASOLINt DIESEL BENZENE TOWENE ETHYL XYLENE TAME Tert Bolanok MT6E 12OCA <br /> nd EDS <br /> BENZENE Ellunok <br /> a <br /> MW 1 2/12/00 440 120 31 NO 0 51 110 1 6t10 <br /> 240 MTBE NO <br /> 4/28/00 NO ND NO ND NO NO 252,800 MTBE NO <br /> 9/20/00 NO ND NO ND NO NO 1 0160 MTBF ND <br /> 12/27/00 NO NO NO NO NO NO 1 063 NO 150 MTBE NO <br /> MW 2 2/12/00 NO NO NO ND NO NO 150 130 ] 800 MTBE NO <br /> 4128/00 NO 64 NO NO NO NO 1 6 84 290 MTBE ND <br /> i 9/20/00 NO NO NO NO NO ND 73 28 980 MTBE ND <br /> 12/27/00 NO NO NO NO NO NO 44 NO 720 MTBE NO <br /> MW 3 2/12/00 NO NO NO NO NO NO NO ND 1 6 MTBE ND <br /> 4/28/00 NO 140 NO ND ND NO NO NO 4 3 MTBE NO <br /> 9/20/00 NO NO NO NO NO NO NO ND 1 S MTBE NO <br /> I <br /> Ethanol 5 t <br /> 12/27/00 NO NO NO NO NO NO ND NO 068 MTBE NO <br /> MW 4 2/12/DO ND NO NO ND NO NO NO NO 3 8 MTBF ND <br /> 4/28/00 ND 96 0 NO ND NO NO NO NO 3 9 MTBEND <br /> Avalon Environmental Consultants Project# 9627-001-5 <br /> toes Truck Plaza 15600 South Harlan Road <br /> January 29, 2001 2 Lathrop, California <br />