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110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br /> 14 1 McCAMPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax:925-798-1622 <br /> htto://www,mccampbell.com E-mail:main@mccampbell.com <br /> Advanced GeoEnvironmental Client Project ID:Plymouth Square Date Sampled:05/21/99 <br /> 4005 North Wilson Way Date Received: 05/26/99 <br /> Stockton, CA 95205 Client Contact:Mike Rauser Date Extracted: 05/26/99 <br /> Client P.O: Date Analyzed:05/26-05/27/99 <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 ID Client ID Matrix TPH(g)+ Ethylben- %Recovery <br /> MTBE Benzene Toluene zene Xylenes 8 <br /> Surro ate <br /> 11901 T-1 S --- --- ND ND ND ND 98 <br /> 11902 SP-1 S -- --- ND 0.010 ND 0.021 97 <br /> 11903 P-1 S --- --- ND ND ND ND 98 <br /> Reporting Limit unless W 50 ug/L 5.0 j 0.5 j 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected above <br /> the reporting limit S 1.0 mg/kg 0.05 0.005 0.005 0.005 0.005 <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 dcscrip6ons 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?); 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)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;j)no recognizable pattem. <br /> DHS Certification No. 1644 �)U Edward Hamilton,Lab Director <br />