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I <br /> 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' http//www mccamybell com E-mail mam@mccampbcll com <br />' Advanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 10/06/99 <br /> 4005 North Wilson Way Date Received 10/12/99 <br />' Stockton, CA 95205 Client Contact Kevin McKibben Date Extracted 10/14/99 <br />' Client P O Date Analyzed 10/14/99 <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 />' <br /> Lab ID Client ID Matrix TPH(g)+ Ethylben %Recovery <br /> -zene MTBE Benzene Toluene Xylenes Surrogate <br /> 23201 B9/10-6-99 W 240,000,b,h,i ND<400 540 28,000 7100 38,000 99 <br /> 1 <br /> 1 <br /> 1 <br />' Reporting Limit unless <br /> W SOug/L 50 OS OS OS 05 <br /> otherwise stated,ND <br />' means not detected above <br /> the reporting limit S 1 0 mg/kg 005 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 /> mug/l. <br /> "cluttered chromatogram,sample peak coelutes with surrogate peak <br /> 'The following descriptions of the TPH chromatogram are cursory in nature and McCampbeli 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 gasohne9,e)TPH pattern that does not appear to be derived from gasoline(1) 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 /> r <br /> DHS Certification No 1644 ` Edward Hamilton, Lab Director <br />