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1 <br /> 10 Second Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Telephone: 510-798-1620 Fax :510-798-1622 <br />' hU7//www.rnccarnRbell.com E-mail:main@mccampbell.com <br />' Advanced GeoEnvironmental Client Project 1D: Geweke Date Sampled: 12/16/97 <br /> 4005 North Wilson Way Date Received: 12/18/97 <br />' Stockton, CA 95205 Client Contact: Kevin McKibben Date Extracted: 12/23-12/24/97 <br /> [ClientP.O: Date Analyzed: 12/23-12124197 <br />' Gasoline Range(C6-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 1D Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben Xylenes %Recovery <br /> -zene Surrogate <br /> 84299 MW-6 W ND ND ND ND ND ND 106 <br />' 12/16/97 <br /> 84300 MW-7 W ND ND ND ND ND ND 104 <br /> 12/16/97 <br /> 84301 MW-8 W 450,a ND 2.2 0.57 22 18 99 <br /> t 12/16/97 <br /> 84302 MW-9- W I100,a ND 3.8 4.7 39 32 107 <br /> 12/16/97 <br /> 84303 MW-11 W ND ND ND ND ND ND 105 <br />' 12/16/97 <br /> 84304 MW-12 W ND ND ND ND ND ND 107 <br /> 12/16/97 <br /> lie84305 MW-14- W 2500,a ND<45 180 130 55 350 107 <br /> 12/16/97 <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 ug/wipe,soil and sludge samples in mg/kg,and all TCLP and SPLP extracts <br /> in uglL <br /> "cluttered chromatogram;sample peak coelutes with surrogate peak <br /> 'The following descriptions of the TPH chromatogram are cursory in nature and IvlcCampbell Analytical is not responsible for their <br />' interpretation: a) unmodified or weakly modified gasoline is significant; h) 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 patient 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 qn4�dward Hamilton,Lab Director <br /> � <br />