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' 110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' 24 http//wwwmccampbellcom E-mail main@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID Yamada Property Date Sampled 11/29/99 <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 0 Date Analyzed 11/30/99 <br /> IGasoline 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 /> 26440 MWl W NO ND ND NO NO NO 102 <br /> 26441 MW2 W ND ND NO ND ND NO 103 <br /> 26442 MW3 W NO NO NO NO ND ND 99 <br /> i <br /> I • <br /> i <br /> i <br /> i <br /> iReporting Limit unless W 50 ug/L 5 0 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> Ithe reporting limit S 1 0 mg/kg 003 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 coclutes 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 /> gasoltne'i), 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(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 of %sediment,j)no recognizable pattern <br /> DHS Certification No 1644Edward Hamilton, Lab Director <br />