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110 2nd Avenue South,##D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> hhtp/Iwww_mccamn ell cg E-mail matn@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID Yamada Brothers Date Sampled 04/11/00 <br /> 4005 North Wilson Way Date Received 04/11/00 <br /> Stockton, CA 95205 Client Contact Tony Mihacich Date Extracted 04111-04/13100 <br /> CIient P Ct Date Analyzed 04/11-04/13/00 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl tent-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 /> 34960 DW-1/ W --- ND --- --- --- --- --- <br /> 0411-00 <br /> 34961 MW1/ <br /> 04-11-00 W '"' ND --- -- --- --- --- <br /> 34962 MW2/ W -- ND -- -- -- --- --- <br /> 04-11-00 <br /> 34963 MW3/ W --- 82 --- --- <br /> 0411-00 <br /> i <br /> Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 10 mg/kg 005 0 005 0 005 0 005 0005 <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 /> gasoline9), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasolme9,e)TPH pattern that does not appear to be derived from gasoline(h),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 Edward Hamilton,Lab Director <br />