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I 10 Second Avenue South,;#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Telephone : 510-798-1620 Fax :510-798-1622 <br /> 24 http://www.mccamubell.com E-mail: main r@i mccampbell.com <br /> Advanced GeoEnvironmental Client Project ID: Weldon Church Date Sampled: 09/05/97 <br /> 1803 West March Lane, Ste A Date Received: 09/09/97 <br /> Stockton, CA 95207 Client Contact: Bill Little Date Extracted: 09/09/97 <br /> Client P.O: Date Analyzed: 09/09/97 <br /> Gasoline Range(C6-02)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether* &BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602;California RWQC13(SF Bay Region)method GCFID(5030) <br /> Lab 1D Client ID Matrix TPH(g)' MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 80569 MW-1 W 320,a ND 32 6.3 3.5 5.4 102 <br /> 80570 MW-2 W ND ND ND ND ND ND 106 <br /> 80571 MW-3 W ND ND ND ND ND ND 106 <br /> 80572 MW-4 W 1200,a I 1`u' 80 13 62 94 102 <br /> 80573 MW-5 W ND ND ND ND ND ND 104 <br /> 80574 MW-6 Upper W ND ND ND ND ND ND 92 <br /> • 80575 MW-6 Lower W ND ND ND ND ND ND 106 <br /> MTBE value not confirmed by EPA 8260 <br /> Reporting Limit unless W 50 ug/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND means <br /> not detected above the <br /> 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 uJwipe,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 mohile fraction) are signifeant; d) gasoline range compounds having broad <br /> 10 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 signiticant; 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 />