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110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br />' 1 ,4 McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> )np//www mccamnbell coin E-mail main@mccampbell corn <br />' <br /> Advanced GeoEnvironriiental Client Project ID Sierra Lumber Date Sampled 07/30/98 <br />' 4005 North Wilson Way Date Received 08/01/98 <br /> Stockton,CA 95205 Client Contact Tim Cuellar Date Extracted 08/03/98 <br />' Client P 4 Date Analyzed 08103-08107198 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasohne*,with Methyl tert-Butyl Ether*&BTEX* <br />' EPA methods 5030,modified 8015,and 8020 or 602,Cahforru2 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 />' 92985 MW5-20 S ND ND ND ND ND ND 103 <br /> 92988 MW5-35 S ND ND ND ND ND ND 103 <br />' 92993 MW6-30 S ND ND ND ND ND ND 94 <br /> 92994 MW6-35 S ND ND ND ND ND ND 98 <br /> Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> otherwise stated,NO <br /> means not detected above S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> the reporting limit <br /> I •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 descnptions 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 /> • gasolme9), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> Chromatographic peaks are significant,biologically altered gasolme?,e)TPH pattem 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, )no recognizable pattern <br /> DHS Certification No 1644 -Edward Hamilton,Lab Director <br />