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1 110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> MCCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> ' hap://www mccamphell.com E-mail main@r mccanspbell cam <br /> Advanced GeoEnvironmental Client Project ID Ripon Farm, Soil Date Sampled 11/16/98 <br /> 4005 North Wilson Way Vapor Pilot Test Date Received 11/18/98 <br /> ' Stockton, CA 95205 Client Contact Bill Little Date Extracted 11/18/98 <br /> Fatent P O Date Analyzed 11/18/98 <br /> ' Gasoline Range(C6-C12)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 ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 98751 VS-1 Air 53,000,c --- 290 260 180 230 ---# <br /> ' 98752 VS-2 Air 7700,c/j --- 11 38 57 93 114 <br /> 98753 VS-3 Air 8100,c/j --- ND<0 8 41 56 93 ---# <br /> ' 98754 VS4 Air l 0,000,c/j --- ND<0 8 ND<0 8 88 170 --a <br /> 1 <br /> 1 <br /> ' Reporting Limit unless Air 50 ug/L 5 0 05 05 05 05 <br /> otherwise stated ND <br /> means not detected above <br /> the reporting limit Mg/kg S 1 0 m /k 005 0 005 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 SPLP 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 gasolmel,e)TPH pattern that does not appear to be derived from gasoline(1),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 Certification No 1644 f/ _Edward Hamilton, Lab Director <br />