Laserfiche WebLink
• Table 1 Page 17of 17 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,Californra <br /> Floating <br /> Well Depth product Groundwater Groundwater Totat <br /> Date Elevation to Water thickness Elevation Elevation Change TPH-G Benzene Toluene Ethylbenzene Xylenes MTBE DO <br /> Sampled (feet,MSL) (feet,TOC) In feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mgfl) <br /> TEX-1 09/16199 1170 — — -- — — _ _ _ _ 24 <br /> (cont) 12/22199 1166 — _ _ _ _ _ _ _ 193 <br /> -- =Indicates not measured or sampled a)All elevations corrected to an arbitrary datum based on a <br /> TPN-G =Total Petroleum Hydrocarbons as Gasoline temporary on-site benchmark with an assigned elevation of 50 feet <br /> TOC =Top of Casing (b)Corrected water level elevation value(Wlc=Wm+(b)(p)),where Wlc=water-level <br /> MSL =Mean Sea Level elevation corrected,Wlm--water4evel elevation measured,b=hydrocarbon thickness(feet), <br /> MTBE =Methyl Tertiary Butyl Ether by EPA Method WM p=specific gravity(0 7)of hydrocarbon <br /> P =Wells purged prior to sample collection (c)Top of well casing altered Well casing has not been resurveyed Water-level measured <br /> NP =Wells not purged prior to sample collection from the highest point of well casing <br /> =MtBE confnmation analytical results(by EPA 8260) <br /> DO = Dissolved Oxygen <br /> I <br />