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' f 110 2nd Avenue South,##D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> E-mail mainamccamptiell coin <br /> Advanced GeoEnvtronmental Client Project ID Marlowe Property Date Sampled 04/07/99 <br /> 4005 North Wilson Way Date Received 04/09/99 <br />' Stockton,CA 95205 Client Contact Tun Cuellar Date Extracted 04/09/99 <br /> Client P O Date Analyzed 04/09/99 <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 ID Client ID Matrix TPH(g)* MTBE Benzene Toluene Ethylben---- zene Surrogate <br /> Xylenes %Recovery <br />' <br /> 08907 VW_l/ Air 2600,a,1 43 76 29 170 116 <br /> 4-7-99 <br /> I <br /> Reporting Limit unless Air 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above S 1 0 m 005 0 005 0 005 0 005 0 005 <br /> the reporting limit 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 /> gasolinc7), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasohne9,e)TPH pattern that does not appear to be derived from gasoline("),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 AEdward Harrulton,Lab Director <br />