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r r r r r r rY .. r r r ; r r r r r r r <br /> Groundwater Quality,7500 West Eleventh Street Tracy,CA <br /> Well Date TPHd TPHg Benzene Toluene Ethyl- Total TBA MTBE TAME DIPS ETRE 1,2-DCA EDB Ethanol Lead <br /> No. Sampled benzene Xylenes <br /> µg/L µ91L gg/L µg/L µ91L u9/L µ9/L µg/L µg/L µg/L µg/L lag/L µg/L µg/L rng/L <br /> MW-12 04/11/02 280' 570 a NO NO ND NO NO ND NO ND NO n/a n/a ND n/a <br /> 07/29/02 1500, 1,700 15 0.99 0.79 8.2 0.55 NO NO NO NO n/a n/a n/a n/a <br /> 10/25/02 1107 280 1.3 NO NO NO NO NO ND NO NO n/a n/a NO n/a <br /> 01/20/03 98' NO NO NO NO ND NO NO NO NO NO n/a n/a NO n/a <br /> 04/15/03 NO i5 170 1.6 NO NO NO ND ND NO NO NO n1a n1a NO n1a <br /> 07/30/03 n/s n/s n/s n/s n/s nls n/s n1s n/s n/s n/s n/s n/s n/s n/s <br /> 10/27/03 1307.15 160 3.6 NO NO ND ND ND NO NO NO NO ND n/a <br /> MW-12A 04/11/02 NO NO NO NO NO NO NO ND NO NO NO n/a n/a NO n/a <br /> 07/29/02 ND NO NO NO NO ND NO NO NO NO ND n/a n/a n/a n1a <br /> 10/25/02 NO fa NO ND ND NO ND NO ND NO NO ND n/a n1a n/a n/a <br /> 01/20/03 NO ND NO NO NO NO NO ND NO NO ND n/a n/a n/a n/a <br /> 04/15/03 NO 5$ NO NO NO ND NO NO ND NO NO ND n/a n/a n/a n/a <br /> 07/30/03 nls n/s n/s n/s n/s nls n/s n/s n/s nls n/s n/s n/s n/s n/s <br /> 10/27/03 nls n/s nls n/s n1s n/s n/s nls n/s nls nts n/s n/s n/s <br /> Notes: <br /> (1) Chromatogram Pattern:Unidentified Hydrocarbons<C16 <br /> (2) Chromatogram Pattern:Unidentified Hydrocarbons>C16 <br /> (3) Chromatogram Pattern:Unidentified Hydrocarbons C9-C24 <br /> (4) Chromatogram Pattern:Gasoline C6-C12 <br /> (5) NO=Not Detected above the Method Detection Limit(MDL). <br /> (6) n/a=not analyzed <br /> (7) Hydrocarbon reported does not match the pattern of the laboratory's Diesel standard. <br /> (8) Hydrocarbon reported does not match the pattern of the laboratory's gasoline standard. <br /> (9) Hydrocarbon reported is in the late Diesel range,and does not match the laboratory's Diesel standard <br /> (10)Sample contains discrete peak in addition to gasoline. <br /> (11)Floating Product in well. <br /> (12)Laboratory reported 130 lag/L of an organic analyte which is NOT a fuel hydrocarbon in sample. <br /> (13)Laboratory reported 100 gg/L of an organic analyte which is NOT a fuel hydrocarbon in sample. <br /> (14)Laboratory reported 100µg/L of an organic analyte which is NOT a fuel hydrocarbon in sample. <br /> (15)Sample aliquot treated with silica gel before analysis for diesel range compounds. <br /> (16)Sample aliquot filtered before analysis for diesel range compounds. <br /> (17) n15=Well Not Sampled <br /> Page 5 of 5 Results of Analyses sic <br />