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110 Second Avenue South,##D7,Pacheco,CA 94553-5560 <br />' McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-I622 <br /> 64bap://www.mccamphell.com E-mail mam@mccampbell corn <br />' <br /> Advanced GeoEnvtroninental Client Project ID Sterna Lurcher Date Sampled 08/21/98 <br />' 4005 North Wilson Way Date Received 08/25/98 <br /> Stockton,CA 95205 Client Contact Tim Cuellar Date Extracted 08/25/98 <br />' Client P O Date Analyzed 08/25/98 <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,California RWQCB(SF Bay Region)method GCF1D(5030) <br /> Lab 1D Client ID Matnx TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br />' 94081 MW7-20 S ND ND ND ND ND ND 96 <br /> 94083 MW7-30 S ND ND ND ND ND ND 101 <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 0 OS 0 005 0 005 0 005 0 005 <br /> the reporting limit <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 /> gasoline9), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasoluiel,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,l)no recognizable pattern <br /> DHS Certification No 1644 �/� Edward Hanulton,Lab Director <br /> I <br />