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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1622 <br /> Advanced GeoEnvironmental Client Project ID:Elkhorn Drill 8-31-95 Date Sampled:08/31/95 <br /> 1803 West March Lane, Ste. A Date Received:09/01/95 <br /> Stockton,CA 95207 Client Contact:William Little Date Extracted:09/01/95 <br /> Client P.O: Date Analyzed:09101-09102/95 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,"ith BTEX* <br /> EPA methods 5030 modified 8015 and 8020 or 602•California RWCB SF Bay Re ion method GCFID 5030 <br /> Lab ID Client ID Matrix TPH(g)+ Benzene Toluene Ethylben- Xylenes %Rec. <br /> zene Surrogate <br /> 55938 MW-4/30 S ND ND ND ND ND 107 <br /> 55939 MW-4135 S ND ND ND ND ND 105 <br /> 55941 MW-5130 S ND ND ND ND ND 107 <br /> 55942 MW-5135 S ND ND ND ND ND 104 <br /> 55944 MW-6/30 S ND ND ND ND ND 106 <br /> 55945 MW-6135 S ND ND ND ND ND 104 <br /> =1 <br /> I.: <br /> Reporting Limit unless other- W 50 ug/L 0.5 0.5 0.5 0.5 <br /> =, «ise stated;ND means not de- <br /> tected above the reporting limit S 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 /> #cluttered chromatogram; sample peak coeiutes"ith surrogate peak <br /> :I + The follotiing descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not <br /> responsible for their interpretation:a) unmodified or weak/ modified gasoline is si,tcant;b) heavier gasoline <br /> range compounds are siggnfnificant(aged gasoline?);c)ligghter ggyaasoline rancompounds(the most mobile fraction) <br /> are st ificant; d) asowie range compounds having broadchromatographic peaks are significant; biologically <br /> altered gasoline?;e5 TPH pattern that does not appear to be derived from gasoline (?);I) one to a few isolated <br /> peaks present;g)strongly aged gasoline or diesel range compounds are significant;h}lighter than water imnuscible <br /> sheen is present;i) liquid samp7le that contains greater than_ 5,,ol. /o sediment;j) no recognizable pattern. <br /> 1__// Ed%%'ard Hamilton,Lab Director <br /> DHS Certification No. 1644 <br /> i <br /> i <br />