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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 /> httA//wrwv nice am)bell corn E-mail main@mccampbell com <br />' Advanced GeoEnvtronmental Client Project ID West Clay Properties Date Sampled 12/18/00 <br /> 4005 North Wilson Way Date Received 12/18/00 <br />' Stockton, CA 95205 Client Contact Paul Dotson Date Extracted 12/18-12/22/00 <br />' <br /> Client P0 Date Analyzed 12/18-12/22/00 <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 Chent ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 56301 MW 12A/ W ND ND ND 089 ND 091 108 <br /> 12-18-00 <br />' 56302 MW 12B/ W 72,a 59 44 64 23 86 101 <br /> 12-18-00 <br /> 56303 12-18-00 <br /> MW13A/ W ND 41 10 27 10 38 104 <br />' <br /> 56304 MW13B/ W ND 65 074 27 ND 24 103 <br /> 12-18-00 <br /> Iz-18-o0 <br /> 56305 EW-1/ W 63,000,a,h 220 1600 14,000 2300 11,000 101 <br />' <br /> 56306 EW-2/ W 350,a ND 17 61 23 16 103 <br /> 12-18-00 <br /> it <br /> 1 <br /> i <br /> 1 <br /> 1 Reporting Lirmt unless <br /> otherwise stated,ND W SD ug/L 50 05 05 05 05 <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 /> 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 /> gasohne'7), 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,1)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />