Laserfiche WebLink
WELL CONCENTRATIONS <br /> Shell-branded Service Station <br /> 620 West Charter Way <br /> Stockton, CA <br /> MTBE MTBE � Depth to GW SPH DO <br /> Well ID Date TPPH B T E X 8020 8260 TBA I DIPE ETBE TAMEFI,(27CAEAB Ethanol Methanol 70C Wafer Elevation Thickness Reading <br /> u IL u IL u IL ('in/] u IL u IL u IL ul` !L u IL u IL u ILu IL u IL u IL MSL ft MSL ft)m <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 82608 prior to November 21 2000 analyzed by EPA Method 8015 except where noted <br /> BTEX=Benzene toluene ethylbenzane xylenes by EPA Method 8260E prior to November 21 2000 analyzed by EPA Method 8020 except where noted <br /> MTBE=Methyl tertiary butyl ether <br /> TBA=Tertiary butyl alcohol or tertiary butanol <br /> DIPS=Di isopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> TAME =Tertiary amyl methyl ether <br /> 1 2 DCA=1 2 Dichloroelhane <br /> EDB=Ethylene dibromide <br /> TOC=Top of Casing Elevation <br /> SPH=Separate Phase Hydrocarbons <br /> GW=Groundwater <br /> DO=Dissolved Oxygen <br /> uglL=Parts per billion <br /> ppm=Parts per million <br /> MSL=Mean sea level <br /> ft =Feet <br /> <n=Below detection limit <br /> D=Duplicate sample <br /> NA=Not applicable <br /> nln=Pre-purge/Post-purge <br /> Notes <br /> =Field data sheets for this event misplaced no field measurements available for this event <br /> =MTBE confirmed Benzene did not confirm by GC/MS <br /> a=Analysis was run past recommended hold time <br /> b=Result was generated out of hold time <br /> c=TPPH analyzed by modified EPA Method 8015 and BTEX analyzed by EPA Method 8020 <br /> d=Insufficient water to record measurement <br /> e=Top of casing elevation altered during wellhead maintenance <br /> f=Site wells surveyed to mean sea level on February 20 2002 by Virgil Chavez Land Surveying of VMaio CA Previous elevations referenced to site datum <br /> g=Hydrocarbon reported does not match the pattern of the laboratory s standard <br /> When separate phase hydrocarbons are present ground water elevation is adjustedusing the relation <br /> Corrected ground water elevation=Top-of-casing elevation-depth to water+(0 8 x hydrocarbon thioE ness) <br /> Page 17 <br /> • <br />