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NOW I t0 2nd Avenue South, 7,Pacheco,CA 94553-5560 <br /> McCA.MPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax:925-798-1622 <br /> hgp:l/www.mccampbell.com E-mail:main@mccampbeil.com <br /> IT Corporation Client Project ID:#772233;Pac Bell Date Sampled: 04/29/02 <br /> 4005 Port Chicago Hwy, Date Received:04/29102 <br /> Concord,CA 94520-1120 Client Contact:Rob Delnagro Date Extracted:04/29/02 <br /> Client P.O: Date Analyzed: 04/29/02 <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 /> Ethyl- %Recovery <br /> Lab 1D Client ID Matrix TPH(g) MTBE Benzene Toluene benzene Xylenes Surrogate <br /> 0204463 PB-TP-1- S --- --- ND ND ND ND 105 <br /> -001 (13) <br /> 0204463 PB-TP-2- S --- --- ND ND ND ND 106 <br /> -002 (13) <br /> 0204463 PB-TP-3- S --- --- ND ND ND ND l05 <br /> -003 (3.5) <br /> Reporting Limit unless W 50 ug/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected above <br /> the reporting limit 5 1.0 mg/kg O a5 fl,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 TCI_P 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?); 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(?);0 <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 pattern, <br /> DHS Certification No, 1644 Edward Hamilton,Lab Director <br />