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I110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> htto//www mcbell t:om E-mail main@mccampbell cam <br /> camp <br /> iAdvanced GeoEnvironmental Client Project ID Stockton Fire Station Date Sampled 12/10/01 <br /> 837 Shaw Road Date Received 12/11/01 <br /> IStockton, CA 95215 Client Contact Bill Little Date Extracted 12/11-12/12101 <br /> Client P O Date Analyzed 12111-12/12/01 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasohne*,with Methyl tert-Butyl Ether* &BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602,California RWQCB(SF Bay Region)method GCF1D(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethyl Xylencs %Recovery <br /> benzene Surrogate <br /> 85705 Influent Air 710,b ND ND 092 5 8 48 103 <br /> 85706 Effluent Air 810,b ND ND 33 26 220 97 <br /> I <br /> iReporting Limit unless Air 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above I <br /> the reporting limit S 1 0 mg/kg 0 OS 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(?),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,i)no recognizable pattern <br /> IDHS Certification No 1644 Edward Hamilton,Lab Director <br />