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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAWBELL ANALYTICAL INC. Telephone.925-798-1620 Fax:925-798-1622 <br /> http;/lwww.mccam�bell corn E-mail:main@mccatnpbell.com <br /> F71 Advanced GeoEnvironmental Client Project ID:Elkhorn C.C. Date Sampled:06/28/00 <br /> 4005 North Wilson Way Date Received: 06/29/00 <br /> Stockton, CA 95205 Client Contact:Bill Little Date Extracted: 06/29-06/30100 <br /> Client P.O: Date Analyzed: 06129-06130100 <br /> I: Gasoline Range(C&Cl2)Volatile Hydrocarbons as Gasoline*,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 M Client ID Matrix TPH(g)+ MTBE Benzene Toluene Bthylben- Xylenes %Recovery <br /> zene Surrogate <br /> 41659 Pre Ox Air 450,b,j ND ND 8.4 1.1 15 96 <br /> 41660 Post Ox Air 60,a ND 3.2 0.84 ND 1.1 91 <br /> Reporting Limit unless Air SO ug/L 5.0 0.5 0.5 0.5 0.5 <br /> = otherwise stated;ND <br /> means not detected above <br /> the reporting limit S 1.0 mg/kg 0.05 0.00S 0.005 0.005 0.005 <br /> `! *water and vapor samples are reported in ug/L,wipe samples in ug/wipe,soil and sludge samples in mg/kg,and all TCLP and SDLP 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 /> gasoline?); c) lighter gasoline range compounds (the most mobile fraction) are significant; d) gasoline range compounds having broad <br /> chromatographic peaks are significant;biologically altered gasoline?;c)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;j)no recognizable pattern. <br /> DHS Certif cation No. 1644 Edward Hamilton,Lab Director <br /> '1 E <br />