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110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> MICA PBELL ANALYTICAL INC Telephone 925-798-1520 Fax 925-798-1622 <br /> httn./y1yA.mccamnbell.com E-mail main@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID Cherokee Truck Stop Date Sampled 09/11/98 <br /> 4005 North Wilson Way Date Received 09/15/98 <br /> Stockton, CA 95205 Client Contact Kevin McKibben Date Extracted 09/15-09/21/98 <br /> rChent P O Date Analyzed 09/15-0921198 <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 /> Lab ID Client ID Matrix TPH(g); MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> Surrogate <br /> 95040 UST98 zene <br /> W <br /> -11- ND ND ND ND ND ND 90 <br /> 95041 UST33/89-11- W ND ND ND ND ND ND 98 <br /> 95042 UST49I89-11- W ND ND ND ND ND ND 96 <br /> 95043 UST59/8-11- W 680,d,b ND 13 44 087 093 --" <br /> Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> the reporting limit <br /> 'water and vapor samples are reported in ug/L,wipe samples to 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 ane 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(9),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 />