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• WELL COATRATIONS <br /> Shell-branded Service Station <br /> 1071 North Main Street <br /> Manteca,CA <br /> MTBE MTBE Depth to GW D 0 <br /> Well ID Date TPPH �183LL T E X 8020 8260 DIPE ETBE TAME TBA 1,2-DCA EDS =Methanol Ethanol TOC Water Elevation Reading <br /> u 1L u u u u u 1L u IL u u u u /1 1L u MSL ft MSL m <br /> MW-3 01/07/2003 <50 <0 50 <0 50 <0 50 <0 50 NA <0 50 <2 0 <2 0 <2 0 <50 <2 0 <2 0I NA 1500 3534 2382 1152 23 <br /> MW-3 04/282003 <50 <0 50 <0 50 Co 50 <0 50 NA 051 NA NA NA NA NA NA NA NA 3534 2186 1348 20 <br /> MW-3 07242003 <50 <0 5o <0 50 <0 50 <1 0 NA 22 NA NA NA NA NA NA NA NA 3534 2518 1016 22 <br /> MVI1:3 10292003 1110b <0 50 <0 60 <0 50 <1 0 NA <0 50 NA NA NA NA NA NA NA NA 3534 2594 940 19 <br /> MA43 01202004 <50 <0 50 <0 50 <0 50 <1 0 NA <0 50 <20 <20 <20 <5 0 <o 50 <0 50 NA 1 <60 1 3534 2556 978 22 <br /> M4i13 04!222004 <60 <0 60 <0.60 <0.60 <1 0 NA I <0 60 NA NA NANA NA NA NA NA 36.0 12442 1 10 92 1 21 <br /> Abbreviations <br /> TPPH a Total petroleum hydrocarbons as gasoline by EPA Method 82608,prior to July 11,2001,analyzed by EPA Method 8015,except where noted <br /> STEX=Benzene,toluene ethylbenzene,xylenes by EPA Method 82806,prior tQ July 11,2001 analyzed by EPA Method 8020 except where noted <br /> MTBE=Met tyl-tertiary-butyl ether <br /> TBA=Tertiary butyl alcohol(t-btbnd)by EPA Method 8280 <br /> DI PE=DI-isopropyl ether by EPA Method 8260 <br /> ETRE= Ethyl tertiary butyl ether by EPA Method 8260 <br /> TAME=Tertiary amyl methyl ether by EPA Method 8260 <br /> 1,2-DCA=1,2-dichloroethane by EPA Method 8010 or 8260 <br /> EDB=Ethylene dLbromde(1,2-dibromoothane)by EPA Method 8010 or 6260 <br /> TQC a Top of Casing Elevation <br /> GW=Groundwater <br /> uglL=Parts per billion <br /> ppm=Parts per million <br /> MSL=Mean sea level <br /> It=Feel <br /> -cn-Below detection limit <br /> 0=Duplicate sample <br /> Notes <br /> a=Sample re-analyzed past hold time,results should be considered estimates <br /> b=Hydrocarbon does not match pattern of laboratory's standard <br /> TPPH and STEX analyzed by EPA Method 82608 on January 23 2001 <br /> For the April 26 2001,event,Sequoia's couner mistakenly took samples which were Intended for Kdf Anatylical <br /> Site surveyed May 7,2002 by Virgil Chavez Land Surveying of Va9elo,Caldomw <br /> Page 3 <br /> i <br />