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FMcCAMPBELL ANALYTICAL INC. 110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> Tele: 510-798-1620 Fax:510-798-1622 <br />' Advanced GeoEnvironmental Client Project ID:Geweke Date Sampled:04/25/96 <br /> 1803 West March Lane,Ste.A Date Received:04/26/96 <br />' Stockton,CA 95207 Client Contact:Kevin McKibben Date Extracted:04/26/96 <br /> Client P.O: Date Analyzed:04126/96 <br />' Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,with HTEX* <br /> EPA methods 503Q modified 8015 and 8020 or 602-California RW CB SF Bay Region)method GCFID(5030 <br /> Lab ID Client ID Matrix TPH(g)+ Benzene Toluene Ethylben- Xylenes % Rec. <br />' zene Surrogate <br /> 64509 MW-14/4-25-96 W 2800,a 120 78 19 350 -- <br />' 64510 EW-1 /4-25-96 W ND ND ND ND 0.85 101 <br /> 1 <br />' Reporting Limit unless other- W 50 ug/L 0.5 0.5 0.5 0.5 <br /> wise stated;ND means not de- <br /> tected above the reporting limit g 1.0 mg/kg 0.005 0.005 0.005 0.005 <br /> * water and vapor samples are reported in ug/L,soil samples in mg/kg,and all TCLP extracts in mg/L <br /> 4 cluttered chromatogram;sample peak coelutes with surrogate peak <br /> + The following descriptions of the TPH chromatogram are cursory m nature and McCampbell Analytical is not <br /> responsible for their interpretation: a)unmodified or weakly modified gasoline is significant;b)heavier asoline <br /> range compounds are signlfican t(age d gasoline?);c)lighter gasoline range compounds(the most mobile action) <br /> are significant; d) pasolme range compounds having broadchromatographic peaks are significant; biologically <br /> altere33 gasoline?• e) TPH pattern that does not appear to be derived tirom gasoline(?);f) one to a few isolated <br /> peaks prescnt;g)strongIgaged gasoline or diesel ran a compounds are significant;h)lighter than water immiscible <br /> sheen is present;i) liquid sample that contains grea er than— 5 vol.% sediment;j)no recognizable pattern. <br /> IDH S Certification No. 1644 f Edward Hamilton,Lab Director <br />