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1 <br /> 110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' 124 http//www mccampbell corn E-mail matn@mccampbell com <br /> • <br />' Advanced GeoEnvironmental Client Project ID 2057 South EXE @ El Date Sampled 05/12/2000 <br /> 4005 North Wilson Way Dorado St Date Received 05/17/2000 <br />' Stockton, CA 95205 Client Contact Bill Little Date Extracted 05/17/2000 <br /> Client P O Date Analyzed 05/17-05/18/2000 <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)4' MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 38119 North Wall S ND ND ND ND ND ND 103 <br />' 38120 South Wall S ND ND ND ND ND ND 101 <br /> 38121 West North S ND ND ND ND ND ND 98 <br />' 38122 West South S ND ND ND ND ND ND 99 <br />' 38123 East North S ND ND ND ND ND ND 94 <br /> 38124 East South S ND ND ND ND ND ND 93 <br />' 38125 Floor N S 4 2,a 23 0016 0 035 0 019 019 109 <br /> 38126 Floor S S 9 9,a 17 015 047 014 067 91 <br />' 38127 SP I A-B S ND 025 ND ND ND 0 013 95 <br /> 38128 SP2A-B S 120,b ND<O 10 ND 077 1 3 97 102 <br /> I38129 SP2C-D S 420,a ND<1 0 ND<O 05 14 42 30 98 <br /> I <br />' Reporting Limit unless W 50 ug/L so 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> Ithe 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 SPLP extracts <br /> in ug/L <br />' 4 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 sigiificant(aged <br /> I gasohne9), c) lighter gasoline range compounds (the most mobile fraction)are significant, d)gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasolmel,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 1}no recognizable pattern <br /> I <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br /> I <br />