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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL .ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//wwwmccampbellcom E-mail main@mccampbell corn <br /> IAdvanced GeoEnvironmental Client Protect ID West Clay Properties Date Sampled 08/11/00 <br /> 4005 North Wilson Way Date Received 08/15/00 <br /> Stockton,CA 95205 Client Contact Tony Mikacich Date Extracted 08115-08/17/00 <br /> Client P O Date Analyzed 08115-08117100 <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 GCFID(5030) <br />' Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethyl Xylenes %Recovery <br /> benzene Surrogate <br /> 44941 MW-11A W ND ND ND ND ND ND 98 <br /> 44942 MW-IIB W 120,a 32 ND 13 10 ND 98 <br /> 44943 MW-12A W ND ND ND ND ND ND 100 <br />' 44944 MW-12B W ND ND ND ND ND ND 95 <br />' 44945 MW-13A W ND 21 ND ND ND ND 96 <br /> 44946 MW-13B W ND 73 ND 060 ND ND 93 <br /> 44947 EW-1 W 73,000,a,h ND<130 1400 17,000 2400 12,000 93 <br /> 44948 EW-2 W 53,000,a ND<200 4400 8600 800 6900 97 <br />' Reporting Limit unless W 50 ug/L 50 05 1 05 05 05 <br /> otherwise stated,ND <br /> means not detected above S 1 0 m 0 OS 0 005 0 005 0 005 0 005 <br /> the reporting limit g <br /> *water and vapor samples are reported in ug/L,wipe samples in ughvipe,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'P), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> . chromatographic peaks are significant,biologically altered gasoline9,e)TPH pattern that does not appear to be derived from gasoline(v),f) <br /> one to a few isolated peaks present,g)strongly aged gasoline or diesel range compounds are significant,h)fighter than water immiscible <br /> sheen is present,i)liquid sample that contains greater than—5 vol %sediment,I)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton, Lab Director <br /> - y <br /> 1 <br />