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' 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAN PBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' / E-mail main@mccampbell corn <br /> Advanced GeoEnvironmental Client Project ID Marlowe Property Date Sampled 04/16/99 <br />' 4005 North Wilson Way Date Received 04/17/99 <br /> Stockton,CA 95205 Client Contact Tun Cuellar Date Extracted 04/17/99 <br /> Client P O Date Analyzed 04/17/99 <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 1D Client 1D Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br />' 09291 VW-1 Air 2700,b,1 --- 2 8 75 37 230 ---° <br /> 1 <br /> 1 <br /> 1 <br /> lie <br /> I <br />' Reporting Limit unless Air 50 ug/L 5 0 0 5 0 5 0 5 0 5 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit m S 1 0 /k 0 05 0 005 0 005 0 005 0 005 <br /> mg/kg <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 /> 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 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 contasns greater than�5 vol %sediment,3)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />