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110 Second Avenue South, #D7, Pacheco, CA 94553-5560 <br /> MCCAMPBELL ANALYTICAL. INC. Telephone : 925-7984620 Fax : 925-798-1622 <br /> htW://www mccamnbell.com E-mail: main@mccampbell.com <br /> Advanced GeoEnvironmental Client Project ID: Nomellini Date Sampled: 02/04/99 <br /> 4005 North Wilson Way Construction Date Received: 02/08/99 <br /> . <br /> Stockton, CA 95205 Client Contact: Tim Cuellar Date Extracted: 02/08/99 <br /> Client P.O: Date Analyzed: 02/08/99 <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 ID Client ID Matrix TPH(g)' MTBEthylben- % Recovery <br /> E Benzene Toluene zene Xylenes Surrogate <br /> 03076 SP1A-B S ND NTD ND NTi ND NTD 98 <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 /> 'ne 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 (?); t) <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 />