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KcCAMPBELL ANALYTICAL INC. 110 2nd Avenue South,#D7, Pacheco,CA 94553 Tele:510-798-1620 Fax: 510-798-1622 ' Advanced GeoEnvironmental Client Project ID:Calkins Trucking Date Sampled:04/26/95 1803 West March Lane, Ste. A Date Received: 04/27/95 Stockton,CA 95207 Client Contact:Bob Marty Date EAracted:04/27/95 Client P.O: Date Analyzed: 04127-04129/95 Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,Ftiith BTEX* EPA methods 5030.modified 8015,and 8020 or 602:California R%V CB SF Ba),Re ion method GCFID 5030 Lab ID Client ID Matrix TPH(g)+ Benzene Toluene Etlylne n Xylenes Sur ec. ate 52051 OX4-1 S --- ND ND ND ND 103 ' 52052 OX4-2 S --- 0.43 0.74 1.0 29 106 52053 OX4-3 S ND< 0.1 ND< 0.1 0.26 0.89 97 ' 52054 OX4-4 S - ND< 0.2 ND< 0.2 0.60 2.2 98 1 Reporting Limit unless other- W 50 ug/L 0.5 0.5 0.5 0.5 ' «ise stated;NO means not de- tected above the reporting limitS 1.0 mg/kg 0.005 0.005 0.005 0.005 ' * water and vapor samples are reported in ug/L,soil samples in mg/kg,and all TCLP extracts in mg/L TM cluttered chromatogram;sample peak coelutes«ith surrogate peak + The folloNiing descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not ' responsible for their interpretation:a) unmodified or weakly modified gasoline is significant;b) heavier'gasoline range compounds are signitcant(age gasoline?);c) lighter asoline range compounds(the most mobile raction) are significant; d) �asoliinne range compounds having 6roa chromatographic peaks are significant;biologically altered gasoline?;e) TPH pattern that does not appear to be deri\rd from gasoline (?);f) one to a few isolated peaks present;g)strongZyaged gasoline or diesel range compounds are significant;h)lighter than water immiscible sheen is present;i) liquid samplescontains greater than-- 5 vol.% sediment;j) no recognizable pattern. DH S Certification No. 1644 �� Ed«2rd Hamilton,Lab Director