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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 /> hitp//www MccaMpbel I com E-mail main@mccampbell com <br /> i <br />' Advanced GeoEnvironmental Client Project ID Cherokee Truck Stop Date Sampled 09/27-09/29/99 <br /> 4005 North Wilson Way Date Received 30/01/99 <br />' Stockton, CA 95205 Client Contact Kevin McKibben Date Extracted 10/01-10/07/99 <br />' [Chent P O Date Analyzed 10101-10107/99 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasohne*,with Methyl tert-Butyl Ether* &BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602,Calrfotnia 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 /> 22522 B 18-5 S ND ND ND ND ND ND 99 <br />' 22523 B18-20 S ND ND ND ND ND ND 96 <br />' 22524 B 18-30 S ND ND ND ND ND ND 104 <br /> 22525 B18-40 S ND ND ND ND ND ND 95 <br />' 22526 818-60 S ND ND ND ND ND ND 103 <br /> 22527 B19-15 S ND ND ND ND ND ND 101 <br />' 22528 B19-25 S ND NTD ND ND ND ND 101 <br /> 22529 B19-35 S ND ND ND ND ND ND 97 <br />' 22530 B20-5 S ND ND ND ND ND ND 101 <br />' 22531 B20-10 S ND ND ND ND ND ND 98 <br /> [22532 B20-20 S ND ND ND ND ND ND 106 <br />' 22533 B20-30 S ND ND 0 018 ND ND ND 99 <br /> 22534 B21-10 S 6 7,g,1 ND 0 009 0 091 ND ND 98 <br />' 22535 B21-20 S ND ND ND ND ND ND 101 <br /> Reporting Limit unless W 50 ug/L 5 0 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit mg/kg S 1 0 m /k 00 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 gasoline9,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 Nater immiscible <br />' sheen is present,i)liquid sample that contains greater than—5 vol %sediment,j)no recognizable pattern <br /> DHS Certification No 1644A Edward Hamilton, Lab Director <br /> I <br />