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S <br /> 110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' hM2,//www mccamnbe[1 com E-mail main@mccampbell com <br /> Advanced GeoEnvtronmental Client Project ID Arco Mint Mart Date Sampled 04/29-05/01198 <br /> 4005 North Wilson Way Date Received 05/02/98 <br /> Stockton, CA 95205 Client Contact Bill Little Date Extracted 05103-05/06/98 <br /> [Client P O Date Analyzed 05103-05/06/98 <br /> tGasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether*&BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602,California RWQCB(SP Bay Region)method GCFID(5030) <br />' Lab ID Client iD Matrix TPH(g)' MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 88799 B 13-H2OA W ND,i --- ND 062 ND 0 88 94 <br />' 88800 B13-H2OB W ND,i --- 061 074 ND 14 96 <br /> 88801 B14-H2O W ND,t --- ND ND ND 059 89 <br />' 88802 B15-H2O W ND,i --- ND ND ND ND 94 <br />' 88803 B16-H2O W ND,i --- <br /> ND ND ND ND 92 <br /> 88804 B17-H2O W ND,i ND 051 ND 1 0 103 <br /> 88805 B18-H2O W ND,i --- ND ND ND ND 108 <br /> 88806 B19-H2O W NDo --- ND ND ND ND 108 <br /> 88807 B13-40 S ND --- ND ND ND ND 99 <br /> I <br /> 88808 B14-35 S ND --- ND ND ND ND 100 <br />' 88809 B18-40 S ND --- ND ND ND ND 97 <br /> 88810 B17-30 S ND --- ND ND ND ND 97 <br />' 88811 B13-35 S ND --- ND ND ND ND 96 <br /> 88812 B15-35 S ND --- ND ND ND ND 96 <br />' Reporting Limit unless W 50 ug/L 5 0 0 5 05 05 05 <br /> otherwise stated ND <br /> means not detected above <br /> the reporting limit S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> 'water and vapor samples are reported in ug/L,wipe samples in ug/wipe,soil and sludge samples in mg/kg,and all TCLP and SPL,P extracts <br /> in ug/L <br />' "cluttered chromatogram,sample peak coelutes wntb surrogate peak <br /> 'The followmg descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their <br /> interpretation a) unmodified or weakly modified gasoline is significant, b) heavier gasoline range compounds are significant(aged <br /> gasoline9), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasoline7,e)TPH pattern that does not appear to be denved from gasoline('r),f) <br /> _ one to a few isolated peaks present,g)strongly aged gasoline Or diesel range compounds are significant h)lighter than water immiscible <br /> sheen is present i)liquid sample that contains greater than—5 vol %sediment i)no recognizable pattern <br /> DHS Certification No 1644 '�l Edward Hamilton,Lab Director <br />