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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 /> lieh //www mccam bell com E-mail mala@mccampbell com <br />' <br /> Advanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 08/28/01 <br /> Date Received 08/29/01 <br /> 837 Shaw Road <br />' Stockton, CA 95215 Client Contact Paul Dotson Date Extracted 08129-08/31101 <br /> Client P O Date Analyzed 08/29-08/31/01 <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 /> Ethyl- Xy <br /> lenes %Recovery <br /> Lab ID Client 1D Matrix TPH(g)+ MTBE Benzene Toluene benzene Surrogate <br /> 76372 MW-11B/ W gg b 28 ND 15 061 105 <br /> 08-28-01 <br /> MW 12A/ <br /> 76373 W ND ND - ND ND ND ND 104 <br /> 08-28-01 <br /> 76374 MW 12B/ W 70,a 25 5 0 23 3 7 6 1 100 <br /> 08-28-01 <br /> 76375 MW13A/ W ND,i 26 Nil ND ND ND 106 <br /> 08-28-01 <br /> 76376 MWI313/ W 150,a 43 86 61 10 17 104 <br /> 08-28-01 <br /> 76377 EW-1/ W 65,000,a ND�400 1700 9500 2600 11,000 105 <br /> 08-28-01 <br /> 76378 EW-2/ W 270,a ND 22 3 2 11 5 6 103 <br />' 08-28-01 <br /> Reporting Limit unless W 50 ug/L 5 0 0 5 0 5 0 5 0 5 <br /> otherwise stated,ND <br /> means not detected above S 1 0 mg/kg 0 05 0 005 0 005 0 005 0005 - <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 441 TCLP and SDLP extracts <br /> in ug/L <br /> *cluttered chromatogram,sample peak coclutes 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 /> gasolineg), C) lighter gasoline range compounds (the most mobile fraction) are significant, d),gasolme range compounds having broad <br /> L chromatographic peaks are significant biologically altered gasohne7 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,i)no recognizable pattern <br /> ' DHS Certification No 1644 Edward Hamilton,Lab Director <br />