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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 /> bU://www mccampbell com E-mail main@mccampbell com <br /> Date Sampled 03/16/99 <br /> Advanced GecEnvironmental Client Protect ID Cherokee Truck Stop <br /> Date Received 03/17/99 <br /> 4005 North Wilson Way <br /> Stockton,CA 95205 Client Contact Kevin McKibben Date Extracted 03118-03119199 <br /> Client P O Date Analyzed 03/18-03119199 <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,Califomia RWQCB(SF Bay Region)method GCFID(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 05249 UST1/3-16-99 W 58,a 8 3 0 83 1 0 0 93 3 9 104 <br /> 05250 UST2/3-16-99 W 100,a ND 10 7 8 3 7 18 100 <br /> 05251 UST3/3-16-99 W 75,a ND 063 50 24 12 106 <br /> 05252 UST4/3-16-99 W 140,a ND 1 9 13 5 4 26 103 <br /> 05253 UST5 B/3-16- W 720,a ND<10 16 13 8 8 38 110 <br /> 05254 Large Well/ W ND ND ND ND ND ND 103 <br /> 3-16-99 <br /> 05255 Small Well/ W ND ND ND ND ND ND 104 <br /> 3-16-99 <br /> Reporting Limit unless W 50 ug/L 50 0 5 0 5 05 0 5 <br /> otherwise stated,ND means <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 in ug/L,wipe samples in ug/wipe,soil and sludge samples in mg/kg,and all TCLP and SDLP 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 /> gasolme9), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasoline9,e)TPH patiem 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 />