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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 />' 24 hap.//www,mccA=bell.com E-mail main a@mccampbell com <br /> Adv Date Sampled 03/31/99 <br /> Advanced GeoEnvironmental Client Project ID Marlowe Property <br /> 4005 North Wilson Way Date Received 04/02/99 <br />' Stockton,CA 95205 Client Contact Tim Cuellar Date Extracted 04/02/99 <br /> Client P O Date Analyzed 04/02/99 <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,California 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 /> 08471 VW-1/ Air 2800,a/j 5 2 88 33 200 107 <br /> 03-31-99 <br /> 1 <br /> lie <br /> I <br /> Reporting Limit unless Air 50 ug/L so 05 05 05 05 <br /> otherwise stated,IND <br /> means net detected above I <br /> the reporting limit mg/kg S 1 0 m /k 005 1 0 005 0 005 0 005 0 005 <br /> *water and vapor samples are reportedin 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 /> gasohrie9), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> Chromatographic peaks are significant,biologically altercd gasoline,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,I)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton Lab Director <br /> I <br />