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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 /> 24 http//www mccampbell coin E-mail main@mccampbell cam <br /> IAdvanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 10/28/99 <br /> 4005 North Wilson Way DSS Date Received 10/30/99 <br /> Stockton,CA 95205 Client Contact Kevin McKibben Date Extracted 10/30-11/08/99 <br /> Client P 4 Date Analyzed 10/30-11/08/99 <br /> Gasoline Range (C&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 Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 24524 MW1/ W 1900,a ND<50 480 93 130 42 100 <br /> 10-28-99 <br /> 24525 MW2/ W 19,000,a NDX200 2000 1400 290 3200 97 <br /> 10-28-99 <br /> 24526 MW3/ W ND ND ND 061 ND 14 91 <br /> 10-28-99 <br /> 24527 MW4/ W ND ND ND ND ND ND 90 <br /> 10-28-99 <br /> 24528 MW10/ W I1,000,a,h 66 640 76 840 2600 109 <br /> 10-28-99 <br /> 24529 MW6A/ W ND ND ND ND ND ND 92 <br /> 10-28-9 <br /> I 24530 MW6B/ W ND ND ND ND ND ND 90 <br /> 10-28-99 <br /> 24531 MW7/ W ND ND ND ND ND ND 96 <br /> 10-28-99 <br /> 24532 MWSA/ W ND ND ND ND ND ND 91 <br /> 10-28-99 <br /> 24533 MW8$/]0-28-99 W ND ND ND ND ND ND 102 <br /> I <br /> 24534 10-28-MW-99 W 380,a 150 39 42 20 69 105 <br /> Reporting Limit unless <br /> otherwise stated,ND W 50 ug/1 50 05 05 05 05 <br /> means not detected <br /> above the reporting S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> limit <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 /> I in ug/L <br /> 'cluttered chromatogram,sample peak coeluies w nh 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 /> gasohne9), 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 denved 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)]:quid sample that contains greater than 5 vol %sediment,l)no recognizable pattern <br /> DHS Certification No 1644 1"A1 Edward Hamilton, Lab Director <br /> I II <br />