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110 Second Avenue,._.,ih,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Telephone: 510-798-1620 Fax : 510-798-1622 <br /> http://www.mccampbell.com E-mail: main rr mccampbell.com <br /> Date Sampled: 08/12/97 <br /> Del-Tech Geotechnical Support Client Project ID: Quarterly G.W. i <br /> Monitoring/Disco Site Date Received: 08/22/97 <br /> 10624 Olive Avenue � <br /> Oakdale, CA 95361 Client Contact: Don Light Date Extracted: 08/22-08/26/97 <br /> CIient P.O: Date Analyzed: 08/22-08/26/97 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether*& BTEX* <br /> FPA methods 5030,modified 8015,and 8020 or 602;California 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 /> 80031 MW-4 W ND --- ND ND ND ND 106 <br /> 80033 MW-10 W ND -- ND 2.1 ND 5.3 103 <br /> 80035 MW-8S W ND --- ND ND ND ND 105 <br /> 80037 MW-9 W ND --- ND 0.64 ND 1.8 104 <br /> 80039 MW-3 W ND --- ND ND ND ND 104 <br /> 80041 MW-2 W 1300,a --- 12 2.6 19 73 103 <br /> 80043 MW-I W 13,000,a --- 690 1700 430 2300 102 <br /> r <br /> 80045 S,U�E-S W 130,000,a --- 17,000 26,000 3100 19,000 105 <br /> 80046 Trip Blank W ND --- ND ND ND ND 105 <br /> 80032 MW-10BB W ND --- ND ND ND ND 106 <br /> 80036 MW-9BB W ND --- ND ND ND ND 104 <br /> Reporting Limit unless W 50 ug/L 5.0 0.5 0.5 0.5 j 0.5 <br /> otherwise stated;ND <br /> means not detected above <br /> the reporting limit S 1.4 mglkg 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 significant(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(?); 1) <br /> one to a few isolated peaks present;g)strongly aged gasoline or diese ran ompounds are significant;h) lighter than water immiscible <br /> sheen is present;i)liquid sample that contains greater than--5 vol.%,se invent;jJVo -ccognizable pattern. <br /> DHS Certification No. 1644 (;;r—_Edward Hamilton,Lab Director <br />