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110 Second Avenue South,#137,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Telephone:510-798-1620 Fax:510-798-1622 <br /> hlW-//www.mccampbell.com com E-mail:main@mccampbell.com <br /> Date Sampled: 12/01/97 <br /> Ivan Ve <br /> gvary,P.E.L.S. Client Project ID:#96074;Durango <br /> Tire;S.El Dorado St.,Stockton,CA Date Received: 12/01/97 <br /> ! 40 Terra Teresa <br /> ! Lafayette,CA 94549-2040 Client Contact:Ivan Vegvary Date Extracted: 12/01-12/04/97 <br /> Chent P.O: Date Analyzed: 12/01-12/04/97 <br /> 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 /> Ethylben- %Recovery <br /> o Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene zene Xylenes Surrogate <br /> 83542 1 S — -- ND ND ND ND 99 <br /> 83543 2 S -- --- ND ND ND ND 98 <br /> I <br /> 83544 3 S — -- ND ND ND ND 104 <br /> 83545 4 S -- — ND ND ND ND 103 <br /> Reporting Limittmless W 50 ug/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected above <br /> 1.the reporting limit S 1.0 mg/k6 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 pattem that does not appear to be derived from gasoline(?);t) <br /> one to a few isolated peaks present g)strongly aged gasoline or diesel range compounds are significant;h)lighter than water imutuscible <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 />