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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> FMcCAMIPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax : 925-798-1622 <br /> htttp://www.mccamr)bell.com E-mail:main@mccampbell.com <br /> ' Advanced GeoEnvironmental Client Project ID:Hess Dubois Cleaners Date Sampled: 09/02/99 <br /> 4005 North Wilson Way Date Received: 09/03/99 <br /> ' Stockton,CA 95205 Client Contact:Bill Little Date Extracted: 09103-09110199 <br /> [Client P.O: Date Analyzed: 09103-09110199 <br /> ' Stoddard Solvent Range(C9-C12)Volatile Hydrocarbons as Stoddard Solvent*,with Methyl tent-Butyl <br /> 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(ss)+ MTBE Benzene Toluene Eth en en- Xylenes %Recovery <br /> ze Surrogate <br /> 18482 MWS W ND --- ND ND ND ND 108 <br /> 18483 MW4 W ND --- ND ND ND ND 109 <br /> r18484 MW3 W 2500,e -- ND<0.80 ND 2.0 11 92 <br /> 18485 MW1 W ND --- ND ND ND ND 105 <br /> 18486 MW2 W 310,e --- ND ND ND ND 101 <br /> 1 • <br /> r <br /> 1 <br /> r <br /> Reporting Limit unless W 50 ug/L 5.0 i 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> r means not detected above <br /> the reporting limit S I.0 mg/kg 0.05 1 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 /> rin ug/l. <br /> "cluttered chromatogram;sample peak coelutes with surrogate peak <br /> •r <br /> 'The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their interpretation: a) unmodified ar weakly modified gasoline is significant; b) heavier gasoline range compounds are significant(aged 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 gasoline?; e) TPH pattern that does not appear to be derived from gasoline <br /> (Stoddard solvent?);f)one to a few isolated peaks present;g)strongly aged gasoline or diesel range compounds are significant;h)lighter <br /> than water immiscible 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 /> 1 <br />