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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 /> F4' hJJpwww ariljibetl,co E-mail main@rnecampbell com <br />' Advanced GeoEnvironmental Client Protect ID C=ss Pontiac Date Sampled 03/25/99 <br /> 4005 North Wilson Way Date Received 03/30/99 <br />' Stockton,CA 95205 Client Contact Bill Little Date Extracted 03/30-03/31/99 <br /> Client P O Date Analyzed 03/30-03/31/99 <br />' Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl Cert-Butyl Ether* &BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602,California RWQCH(SF Bay Region)method GCFID(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethyiben- Xylenes %Recovery <br />' zene Surrogate <br /> 08193 MW-1 A/ W 71,a ND 081 093 1 2 082 101 <br /> 3-25-99 <br />' <br /> 08194 MW_25-99 <br /> 3-25-99 W 3600,a ND<70 1300 120 110 88 105 <br /> 08195 <br /> MW-2A/3-25-99 W ND ND ND ND ND ND 102 <br />' 08196 MW-2B/ W ND ND ND ND ND ND 98 <br /> 3-25-99 <br /> 08197 MW-31 W ND ND ND ND ND ND 92 <br /> 3-25-99 <br />' 08198 MW-5/ W ND ND ND ND ND ND 93 <br /> 3-25-99 <br /> 08199 MW-6/3-25-99 W ND ND ND ND ND ND 92 <br /> Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> the reporting limit g g <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 McCampbeil 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's), 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(')),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,3)no recognizable pattern <br /> DHS Certification No 1644ward Hamilton,, Lab Director <br />