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aertt: ny: mcualnppeu Ana.[ytical; 925 798 4612; Dec-3-99 2:25PM; Page 314 <br /> 1102nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax :925-798-1622 <br /> 24 http://www.mccarnpbell.coTn E-mail:main(;mccampbelt.com <br /> Advanced GeoEnvironmental Client Project ID: Yamada Property Date Sampled: 11'29199 <br /> 4005 North Wilson Way Date Received: 11/30/99 <br /> Stockton,CA 95205 Client Contact:Tony Mikacich Date Extracted: 11/30/99 <br /> Client P.O: Date Analyzed: 1 1/30/99 <br /> Gasoline Range(C6-Cl2)Volatile Hydrocarbons as Gasoline",with Methyl tert-Butyl Ether*&BTEX* <br /> ETA methods 5030,modified 8015,and 8020 or 602;California RWQCB(SF Bay Region)method GC17I1)(5030) <br /> Lab ID Client ID matrix TPH(g)' MTBE Benzene Toluene Ethylbcn-' Xylenes %Recovery <br /> rine Surrogaic <br /> 26439 DWI W ND ND ND ND ND ND 103 <br /> i <br /> i <br /> Rcporting Limit unless W 50 uB/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected above <br /> the reporting lirnit S 1.0 mglkg 0.05 0.005 0,005 0.005 0.005 <br /> *water and vapor samples are reported in ug/L,wipe samples in ug1wipe,soil and sludge samples in mg/kg,and 211 TCLIr and SPLI'extracts <br /> in ug.R. <br /> 0 cluttered chromatogram;sample peak coelutes with surrogate peak <br /> 'The folloMng descriptions of the TTI/ chromatogram are cursory in nature and McCamphell Analytical is nut 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 traction)are significant;d)gasttline range compounds having broad <br /> chromatographic peaks are significant;biologically altered gasoline?;c)TPH pattern that does not appear to be derived from gasoline(?);r) <br /> one to a few isolated peaks present;g)strongly aged gasoline or diesel range compounds arc significant;h)lighter than water immiscible <br /> sheen is present;i)liquid sample that contains greater than—5 vol.Rio sediment;})no recognizable pattern. <br /> DHS Certification No. 1644Edward Hamilton,Lab Director <br />