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i <br /> 10 Second Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC Telephone 510-798-1620 Fax 510-798-1622 <br /> hitp//www mccampbell com E-mail matn@mccamphell com <br /> i <br /> Advanced GeoEnvironmental Client Project 1D Chapin Biotheis nate Sampled 11/26/97 <br /> 4005 North Wilson Way Date Received 11/26/97 <br /> Stockton, CA 95205 Client Contact Bill Little Date Extracted 11/26/97 <br /> Lt P O Date Analyzed 11/26/97 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,wall Methyl tert-Butyl Ether* &BTEX* <br /> CPA methods 5030,modified 8015,and 8020 or 602,California RWQ(t3(SI flay Rt gion)method GCl-lD(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE BLnzene Toluene Elliylben- Xylenes %Recovery <br /> gene Surrogate <br /> 83400 Pre Cat Air 1100,) ND ND 4 2" 3 0& 29& 104 <br /> 83401 Post Cat Air ND ND ND ND ND ND 97 <br /> LResult not in substantial agreement with CPA 8260,presumably due to the.Icss cu tam compound identiEcation/resolution <br /> inherent in EPA method 8020 <br /> 1 <br /> Ri.portkng I-Inilt UnIcSS W 50 u /L 50 05 05 0 5 05 <br /> othuwise stated,ND b <br /> t means not detected above <br /> the Icpokting limit S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> *water and vapor samples are reported in ug/L,wipe samples In ug/wtpc,loll and studgi,samples In mg/kg and all TCLP and SPLP extracts <br /> ' ut ug/L <br /> "cluttered chromatogram,sample peak caelutes with surrogate peak <br /> *]he following descupuons of the TPH chromatogram are cursoiy In nature. and Me(ampb(ll Analytlt.al is not responsible for their <br /> 1 niterpretatkon a) unmodified or weakly modified gasoline is sigmtlLdnt, b) hcavler 6daulloe Iangi uimpounds are stginticarit(aged <br /> gasO1111C , L) lighter gasoline range compounds (the most mobttc 1rdLIIOIl) arc srgniti(.ant d) gasohne Lange compounds having broad <br /> chromatogiaphre peaks are significant biologteally alteied gasoline' C) I Pl1 pJIIL1II tllat doe.S not appeal to be derived trom gasoline(9) t) <br /> one to a ttw isolated peaks present g)strongly aged gasoline in drescl IargL uinlpounds are srgniticant h)lighter than water immiscible <br /> Sheen is present,1)liquid sample that contains greater than—5 vol % sedlmc nt J)mi IicognlZablL pattern <br /> DHS Certification No 1644 /// Edward Hamilton,Lab Director <br />