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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> WCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//wwwmccampbellco E-mail main@mccampbell com <br /> i - <br /> Advanced GeoEnvironmental Client Project ID City of Manteca Date Sampled 04/05/01 <br /> 837 Shaw Road Date Received 04/10/01 <br /> Stockton, CA 95215 Client Contact Bnan Millman Date Extracted 04/10-04/13/01 <br /> Client P O Date Analyzed 04/10-04/13/01 <br /> Gasoline Range(C6-Cl2)Volatile Hydrocarbons as Gasohne*,with Methyl Cert-Butyl Ether* &BTEX* <br /> FPA methods 5030,modified 8015 and 8020 or 602,California RWQCB(SF Hay Region)method GCFID(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethyl- Xylenes %Recovery <br /> benzene Surrogate <br /> 65162 MW I-15 S ND ND ND 0 025 ND ND 103 <br /> 65163 MW1-20 S ND ND ND ND ND ND 108 <br /> 65164 MW1-25 S ND ND ND ND ND ND 110 <br /> 65165 MW2-10 S ND ND ND ND ND ND 110 <br /> 65166 MW2-20 S ND ND ND ND ND ND 104 <br /> 65167 MW2-25 S ND ND ND ND ND ND 105 <br />� . 65168 MW3-15 S ND ND ND 0 014 ND ND 110 <br /> 65169 MW3-20 S ND ND ND ND ND ND 102 <br /> 65170 MW3-25 S ND ND ND 0 01 1 ND ND 107 <br /> 65171 MW4-10 S ND ND ND 0 010 ND ND 119 <br /> 65172 MW4-20 S ND 12 ND 0 018 ND ND 112 <br /> 65173 MW4-25 S ND 013 ND ND ND ND 96 <br /> 65174 MWI-30 S ND ND ND ND ND ND 107 <br /> 65175 MW3-30 S ND ND ND ND ND ND 102 <br /> Reporting Limit unless W 50 ug/L 5 00 5 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 coclutes 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 gasolme'�,e)TPH pattern that does not appear to be derived 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)liquid sample that contains greater than�5 vol %sediment j)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />