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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL NC. Telephone:925-798-1620 Fax:925-798-1622 <br /> 24 http://www.mccampbell.com E-mail:main@mccampbell.com <br /> Roy F. Weston,Inc. Client Project ID: Home Depot, Tracy Date Sampled:08/22/00 <br /> P.O.Box 2135 Date Received: 08/22/00 <br /> Vallejo,CA 94592 Client Contact: Scott Lookingbill Date Extracted: 08/22/00 <br /> Client P.O: Date Analyzed: 08.22/00 <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 GCFID(5030) <br /> Lab ID Client ID Matrix TPH(g) %ITBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 45549 SB-1-5 S ND ND ND ND ND ND 97 <br /> 45552 GW-I W ND,i ND ND ND ND ND 101 <br /> 45553 GW-2 W ND ND ND ND ND ND 101 <br /> 45554 GW-3 W ND,i ND ND ND ND ND 101 <br /> 45559 GW-4 W ND,i ND ND ND ND ND 99 <br /> Reporting Limit unless W 50 ug/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected above <br /> the reporting limit S 1.0 mg/kg 0.05 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 /> 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 sign i ficant(aged <br /> 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(?);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 />