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F7110 2nd Avenue South, #D7, Pacheco, CA 94553 CAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1622 Advanced GeoEnvironmental Client Project ID:Geweke Date Sampled:05/23/96 ' 1803 West March Lane, Ste.A Date Received:05/24/96 ' Stockton,CA 95207 Client Contact:Kevin McKibben Date Extracted:05/24-05/25/96 Client P.O. Date Analyzed:05/24-05/25/96 ' Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,with BTEX* n methods 5030 modified 8015.and 8020 or 602•California RW CB SF Ba Re ion method GCF1D(503b ID Client ID Matrix TPH(g)+ Benzene Toluene Etzen en- Xylenes u Rec. zene Surrogate ' 65386 MW-14/5-23-96 W 1700,a 58 28 9.2 120 100 ' 65387 EW-115-23-96 W ND ND ND ND ND 99 r i i Reporting Limit unless other- W 50 ug/L 0.5 0.5 0.5 0.5 I wise stated;ND means not de- tected above the reporting limit S 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 # cluttered chromatogram;sample peak coelutes with surrogate peak * The following descri tions 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)heaviergasoline range compounds are significant(aged gasoline?);c)lighter gasoline range compounds(the most mobile traction) are significant; d) asolme range compounds having'broad chromatographic peaks are significant; biologically altered gasoline?; eg} TPH pattern thaf does not appear to be derived from gasoline (?);fl one to a few isolated peaks present;g)strong/gaged gasoline or dieselrange compounds are significant;h)lighter than water immiscible sheen is present;i) liquid sampe that contains greater than - 5 vol.% sediment;j)no recognizable pattern. __J DHS Certification No. 1644 Edward Hamilton,Lab Director