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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 htM//www mccamp ell com E-mail main@mccampbell com <br />' Advanced GeoEnvironrmiental CIient Project ID West Clay Properties Date Sampled 07/25-07/27/00 <br /> 4005 North Wilson Way Date Received 08/01/00 <br /> 1 Stockton, CA 95205 Client Contact Tony Mikacich Date Extracted 08/01-08/02/00 <br />' Client P O Date Analyzed 08/01-08/02100 <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 />' Lab Client ID Matrix TPH(g)+ MTBE Benzene Toluene benzeEthyl-ne <br /> Xylenes %urr gate <br /> overy <br /> ID benzene Surrogate <br /> 44146 MW-11A-15' S ND --- ND ND ND ND 103 <br />' 44147 MW-IIA-20' S ND --- ND ND ND ND 105 <br /> 44148 MW-iIA-25' S ND --- ND ND ND ND 93 <br />' 44149 MW-1 1 A-30' S ND --- ND ND ND ND 97 <br /> 44150 MW-IIB-35' S ND ND ND ND ND 95 <br /> 44151 MW-IIB-45' S ND --- ND ND ND ND 105 <br />' 44152 MW-12B-15' S ND --- ND ND ND ND 100 <br /> 44153 MW-12B-20' S ND --- ND ND ND ND 98 <br /> I44154 MW-12B-25' S ND --- ND ND ND ND 99 <br /> 44155 MW-12B-35' S ND --- ND ND ND ND 104 <br />' 44156 MW-12B-45' S ND ND ND ND ND 106 <br /> 44157 MW-13B-15' S N❑ ND ND ND ND 95 <br /> 44158 MW-13B-20' S ND --- ND ND ND ND 101 <br />' 44159 MW-13B-25' S ND --- ND ND ND ND 95 <br /> 44160 MW-13B-35' S ND --- ND ND ND ND 97 <br /> 4416I MW-13B-45' S ND --- ND ND ND ND 92 <br /> 44162 EW-1-10' S 920,b ND<0 06 0 63 15 75 88 <br /> 44163 EW-1-20' S 4400,b,1 --- 40 220 91 480 85 <br /> 44164 EW-1-30' S 3 5,b --- ND 020 0 078 041 86 <br /> Reporting Limit unless W 50 ug/L 5 0 0 5 1 0 5 0 5 0 5 <br /> I otherwise stated,ND <br /> means not detected above <br /> the reporting limit g g S 1 0 m /k 0 05 0 005 0 005 000! <br /> 000 5 <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 /> gasolme9), 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("),f) <br /> I 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, )no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />