|
WELL CO CENTRATIONS
<br /> Shell-branded Service Station
<br /> 6131 Pacific Avenue
<br /> Stockton, CA
<br /> MTBE MTBE Depth to Depth toSPH DO
<br /> Well ID Date TPPH [:B T E X 8020 8260 TOCWater SPH Elevation Thickness Reading
<br /> u L L u L u 1L u L u L 1l.u (MSL)
<br /> MSL ft ft MSL ft m
<br /> VEW-2 02/0312000 88,900 3,090 10,300 1,850 20,400 <500 NA NA 3255 NA NA NA NA
<br /> VEW-2 05/15/2000 912,000 3,050 13,000 2,200 20,500 <500 NA NA 3195 NA NA NA NA
<br /> VEW-2 08/16/2000 73,400 3,200 9,770 1,900 17,900 <2,000 228 NA 3512 NA NA NA NA
<br /> VEW-2 11/21/2000 68,200 2,530 1 8,350 11950 14,600 <500 NA NA 3318 NA NA NA NA
<br /> VEW-2 03/16/2001 84,200 7,480 12,600 1,680 19,300 <2,500 NA NA 3172 NA NA NA NA
<br /> VEW-2 05/11/2001 130,000 9,900 14,000 2,000 23,000 NA <500 NA 3173 NA NA NA NA
<br /> VEW-2 08/30/2001 100,000 2,600 3,900 2,000 18,000 NA <25 NA 3461 NA NA NA NA
<br /> VEW-2 92/10/2001 82,000 2,400 5,000 2,700 16,000 NA <25 1314 3373 NA -2059 NA NA
<br /> VEW-2 02/05/2002 170,000 9,200 14,000 2,200 27,000 NA <2,500 1314 3161 NA -1847 NA NA
<br /> VEW-2 06/03/2002 90,000 2,300 3,000 2,600 18,000 NA <5W 1314 3255 NA -19 41 NA NA
<br /> VEW-2 09/03/2002 100,000 2,900 3,900 2,100 21,000 NA <60 1314 3549 NA -2235 NA NA
<br /> VEW-2 11107/2002 68,000.1 1,200 660 2,200 14,000 1 NA <250 1314 1 3613 NA -2299 NA NA
<br /> Abbreviations
<br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 82606, prior to May 11,2001, analyzed by EPA Method 8015
<br /> TEPH=Total petroleum hydrocarbons as diesel by modified EPA Method 8015
<br /> BTEX= Benzene,toluene,ethylbenzene,xylenes by EPA Method 8260B, prior to May 11, 2001,analyzed by EPA Method 8020
<br /> MTBE=Methyl-tertiary-butyl ether
<br /> TOC=Top of Casing Elevation
<br /> SPH=Separate-Phase Hydrocarbons
<br /> GW=Groundwater
<br /> DO=Dissolved Oxygen
<br /> ug/L= Parts per billion
<br /> ppm= Parts per million
<br /> MSL=Mean Sea Level
<br /> ft=Feet
<br /> <n= Below detection limit
<br /> NA= Not Applicable
<br /> Page 11
<br />
|