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' 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> MCCAMPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax:925-798-1622 <br /> bnp://www.mcompbtUc= E-mail: main@mccampbeli.com <br /> I <br /> • Date Sampled: 09/22/99 <br /> I Advanced GeoEnvironmental Client Project ID: Strong Properties <br /> Date Received: 09/23/99 <br /> 4005 North Wilson Way <br /> Stockton,CA 95205 Client Contact: Tim Cuellar Date Extracted: 09/26/99 i <br /> Client P.O: Date Analyzed: 09/26/99 <br /> I Gasoline 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(SF Bay Region)method GCFID(5030) <br />' <br /> Lab ID Client ID Matrix TPH(g)" MTBE Benzene Toluene Ethen en- Xylenes %Recovery ze Surrogate <br /> 19837 MW 1 W ND ND ND ND ND ND 108 <br />' 19838 MW2 W 130,a ND 19 ND 3.3 0.74 104 <br /> 19839 MW3 W ND ND ND ND ND ND 108 <br /> I19840 MW4 W ND ND ND ND ND ND 108 <br /> I - <br />' Reporting Limit unless W 50 ug/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected above <br /> the reporting limit S 1.0 mg/kg 0.05 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 SPLP extracts <br /> in ug/L <br /> cluttered chromatogram;sample peak coelutes with surrogate peak <br /> 'The following 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 />' gasoline?); c) lighter gasoline range compounds (the most mobile fraction) are significant; d) gasoline range compounds having broad <br /> chromatographic peaks are significant;biologically altered gasoline?;e)TPH pattern that does not appear to be derived from gasoline(?);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;j)no recognizable pattern. <br />' DHS Certification No. 1644 + Edward Hamilton,Lab Director <br /> I <br />