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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> MCCAWBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> www mccam bell.com E-mail matn@mccampbell com <br /> W A Craig,Inc Client Project ID #3954,Mason Center <br /> Date Sampled 11/03/00 <br /> Stockton Date Received 11/03/00 <br /> 6940 Tremont Road <br /> Dixon, CA 95620-9603 Client Contact Tun Cook Date Extracted 11/03/00 <br /> Client P O Date Analyzed 11/03/00 <br /> Gasoline Range(C6-Cl2)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether* &BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602,Cahforma RWQCB(SF Bay Region)method GCFID(5030) <br /> Ethylben- %Recovery <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Zene Xylenes Surrogate <br /> 52123 4A S ND ND ND ND ND ND 108 <br /> 52124 5A S ND ND ND ND ND ND 107 <br /> 52125 6A S ND ND ND ND ND ND 106 <br /> 52126 4B S ND ND ND ND ND ND 106 <br /> 52127 5B S ND ND ND ND ND ND 106 <br /> 52128 6B S ND ND ND ND ND ND 106 <br /> Reporting Limit unless W 50 ug/L 5 0 0 5 0 5 05 05 <br /> otherwise stated,ND <br /> means not detected above S 1 0 mg/kg 0 05 0 005 0 005 0 005 0 005 <br /> the reporting limit <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 /> gasolme9), 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(9),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,l)no recognizable panem <br /> DHS Certification No 1644 �y _Edward Hamilton,Lab Director <br />