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I 10 2nd Avenue South,#D7, Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> 14 http//www mccampbell com E-mail main@mccampbell com <br /> IAdvanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 01/25/00 <br /> 4005 North Wilson Way Date Received 01/26/00 <br /> Stockton,CA 95205 Client Contact Kevin McKibben Date Extracted 01126-01127100 <br /> Client P O Date Analyzed 01/26-01127100 <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 GCF1D(5030) <br /> Lab ID Client ID Matrix TPIi{g}+ MTBE Benzene Toluene Ethylben- i %Recovery <br /> zene Xylenes Surrogate <br /> 29625 MW-l/ W 3100,a ND 860 15 220 45 ---" <br /> 1-25-00 <br /> 29626 MW 2/ W 18,000,a ND<10 2000 1500 620 2800 ---# <br /> 1-25-00 <br /> 29627 MW-3/ W ND ND 5 5 0 93 2 1 1 1 99 <br />' 1-25-00 <br /> 29628 MW-4/ W ND ND ND ND ND ND 97 <br /> 1-25-00 <br /> 29629 /1-25-00 W ND ND ND ND ND ND 97 <br />' 29630 MW-6A/ W ND ND ND ND ND ND 100 <br /> 1-25-00 <br /> 29631 W 71,a ND 80 1 0 5 0 2 6 96 <br /> 1-25-00-25-00 <br /> 29632 MW-7/ W ND ND ND ND ND ND 100 <br /> 1-25-00 <br />' 29633 MW-8A/ W ND ND ND ND ND ND 102 <br /> 1-25-00 <br /> 29634 MW-8B/ W 90,a ND 18 1 5 5 4 2 2 100 <br /> 1-25-00 <br />' 29635 MW-9/ W 88,a 100 4 9 091 25 1 7 101 <br /> 1-25-00 <br /> 29636 MW-10/ W 8200,a,b,h 16 130 44 280 350 ]]1 <br />' 1-25-00 <br /> Reporting Limit unless W 50 ug/L 5 0 0 5 05 05 0 5 <br /> otherwise stated ND - <br /> means not detected aboxe <br /> the reporting limit S 1 0 mg/kg 0 OS 0 005 1 <br /> 0 005 0 005 0 005 <br /> water and vapor samples are reported in ug/L,wipe samples in ug/N ipe,soil and sludge samples in mglkg and all TCLP and SPLP extracts <br />' <br /> in uglL <br /> 9 cluttered chromatogram sample peak coelutes with surrogate peak <br /> 'The following descriptions of the TPN chromatogram are cursory in nature and McCampbell Analylical is not responsible for the r <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 halving broad <br /> chromatographic peaks are significant,biologically altered gasoline? e)TPA pattern that does not appear to be dem ed from gasoline(9),0 <br /> one to a few isolated peaks present,g)strongly aged gasoline or diesel range compounds ate significant h)lighter than water immiscible <br /> sheen is present i)liquid sample that contains greater than—5%of %sediment no recognizable pattern <br /> DHS Certification No 1644 t Edward Hamilton, Lab Director <br />