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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fait 510-798-1622 <br /> Geological Audit Services Client Project ID Comfort Air Date Sampled 01/25/94 <br /> 1803 West March Lane, Ste A Date Received 01/26/94 <br /> Stockton,CA 95207 Client Contact Bob Marty Date Extracted 01/27-01128194 <br /> Client P O Date Analyzed 01/27-01/28/94 <br /> Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline*,with BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602,California RW CB SF Ba Re on method GCFID 5030 <br /> Lab ID Client ID Matrix TPH(g)- Benzene Toluene Ethylben- X-denes % Rec <br /> zene Surrogate <br /> 34017 MW-4/1-25-94 W 1400,a 460 25 75 22 97 <br /> 34018 Drum 1-9 W ND ND ND ND ND 96 <br /> 1 <br /> Detection Lieut unless other- W 50 ug/L 05 05 05 05 <br /> wise stated,ND means Not <br /> Detected S 10 mglkg 0 005 0 005 0 005 0 005 <br /> *water samples are reported in ug/L,soil samples in mg/kg,and all TCLP extracts in mg/L <br /> #cluttered chromatogram,sample peak co-elutes with surrogate peak <br /> + The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not <br /> responsible for their interpretation a)) unmodified or weakly modified gasoline is significant,b) heavier gasoline <br /> range compounds are sigi ificant(aged gasoline?),c)lighter gasoline range compounds(the most mobile fraction) <br /> are significant d) gasoline range compounds are si, cant no recognisable pattern e) TPH pattern that does <br /> not appear to�e derived from gasoline {{'7) fl one a a few isolated peaks present,g5 strongly aged gasoline or <br /> diesel range compounds are significant,li) (igliter than water mmuscble phase is present <br /> DHS Certification No 1644 �!� Edward Hamilton,Lab Director <br />