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1 <br /> 110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br />' McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> htfi//wvvwmccamnbell.com E-mail main@mccampbell corn <br /> 1 07/29/98 <br /> Advanced GeoEnvironmental Client Project ID Sierra Lumber Date Sampled <br />' 4005 North Wilson Way Date Received 07/31/98 <br /> Stockton,CA 95205 Client Contact Tim Cuellar Date Extracted 08/03/98 <br />' LientP O Date Analyzed 08/03/98 <br /> Gasoline Range(C&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 G4CFID(5030) <br /> Lab ID Client ID Matnx TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zerte Surrogate <br /> 92978 MW4-35 S 9 5,a ND 0 060 0 069 028 046 n <br />' 92979 MW4-40 S 9 2,a ND Oil 0 13 031 056 --" <br />' 92980 MW4-50 S ND ND ND 0 022 0 009 0 049 102 <br /> 92982 MW4-60 S ND ND ND ND ND ND 102 <br /> 1 <br /> I <br /> 1 <br /> Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> I otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 1 0 mgg lk 005 0 005 0 005 0 005 0 005 <br /> •water and vapor samples are reported in ug/L,wipe samples in ug/wtpe,soil and sludge samples to mg/kg,and all TCLP and SPLP extracts <br /> to ug/L <br /> "cluttered chromatogram,sample peak coelutes with surrogate peak <br /> The following descriptions of the TPH chromatogram are cursory in nature and McCampbeli 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 gasoline?,e)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 vol %sediment,I)no recognizable pattern <br /> DHS Certification No 1644 /Edward Hamilton,Lab Director <br />