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I <br /> 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' ham,//www.mcQampbeIl com E-mail main@mccampbell com <br />' Advanced GeoEnvironmental Client Protect ID Cherokee Truck Stop Date Sampled 09/23/99 <br /> 4005 North Wilson Way Date Received 09/25/99 <br />' Stockton,CA 95205 Client Contact Kevin McKibben Date Extracted 09/27-09/29/99 <br />' Client P O Date Analyzed 09127-09/29/99 <br /> Gasolene Range(C6-02)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 />' Lab ID Client ID Matrix TPH(gr MTBE Benzene Toluene Ethylben Xylenes %Recovery <br /> zene Surrogate <br /> 22093 UST-219-23-99 W ND ND ND ND ND ND 106 <br />' 22094 UST-319-23-99 W ND ND ND ND ND ND 105 <br />' 22095 UST-419-23-99 W ND ND ND ND ND ND 103 <br /> 22096 UST-5/9-23-99 W 720,a ND<70 27 076 1 2 074 106 <br />' 22097 UST-6/9-23-99 W ND ND ND ND ND ND 105 <br />' Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND means g <br />' not detected above the <br /> reporting limit S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> 'water and vapor samples are reported to ug/L,wipe samples in ug/xvipe,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 arc cursory in nature and NicCampbell 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 gasoline's,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 /> 1 sheen is present,i)liquid sample that contains greater than—5 vol %sediment no recognizable pattern <br /> DHS Certification No 1644 "JL�—Edward Hamilton, Lab Director <br />