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110 2nd Avenue South,#D7, Pacheco, CA 94553-5560 <br /> 4 McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http/lwww tnccampbell com E-mail main@mccampbell conn. <br /> ' <br /> Environmental Science Associates Client Project ID #200252, Stockton Date Sampled 07/05/00 <br /> Date Received 07/07/00 <br /> 225 Bush Street, Suite 1700 <br /> Client Contact Peter Hudson Date Extracted 07/07/00 <br /> San Francisco,CA 94104 <br /> Client P D Date Analyzed 07/07-07/10/00 <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 GCF1D(5030) <br /> Ethylben- % Recovery <br /> Lab[D Client ID Matnx TPH(g)+ MTBE Benzene Toluene zene Xylenes Surrogate <br /> 42270 TPI-12' S NO --- NO ND ND NO 105 <br /> 42271 TPI-16' S NO --- NO ND NO NO 102 <br /> ' 42272 i TP1-20' S NO --- NO ND NO NO 102 <br /> 42273 TP1-24' S NO --- NO NO ND ND 98 <br /> ' 42274 TP2-16' S NO --- NO ND ND NO 100 <br /> 42275 TP2-14' S ND --- NO NO ND ND 101 <br /> ' 42278 TP3-20' S ND --- ND ND NO ND 99 <br /> 42280 TP4-15' S ND --- NO ND NO ND 100 <br /> 42281 TP4-20' S NO --- ND PID NO NO 103 <br /> 42282 TP5-16' S NO ND ND ND NO 105 <br /> 4 42283 TP5-20' S NO --- ND NO ND NO 102 <br /> 2285 PTP-1 W NO --- NO NO ND NO 97 <br /> ' 42286 TP-2 W NO --- NO NO NO NO 98 <br /> 42287 TP-3 W NO --- NO NO NO NO 98 <br /> E42288 TP-4 W NO --- ND NO NO ND 98 <br /> 42289 TP-5 W NO --- NO ND NO ND 100 <br /> ' Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> otherwise stated ND <br /> means not detected above <br /> the reporting limit S 1 0 mglkg 005 0 005 0 005 0 005 0 005 <br /> ' *water and vapor samples are reported in ug/L,wipe samples in uglwtpe,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 /> gasoline'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("),f) <br /> one to a few isolated peaks present, g)strongl} aged gasoline or diesel range compounds are significant,h)lighter than water immiscible <br /> sheen is present 1)liquid sample that contains greater than—5 vol %sediment,i)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton, Lab Director <br />