Laserfiche WebLink
*1 05 of 15 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,California_ <br /> Floating <br /> Well Depth product Groundwater Groundwater Total <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) (mgM <br /> SMW-1 11/17/97 NP 1296 -- _ <50 <0 5 <0 5 <0 S <0 5 290 — <br /> (oont) 3130/98 NP 1215 — — — 910 4 6 <0 5 <0 5 1 1 110 16 <br /> 6125198 NP 1270 — -- -- 692 0 666 <0 5 <0 5 <0 5 765 16 <br /> 9/11198 NP 1290 — — — <50 <0 5 <0 5 <0 5 <0 5 290 17 <br /> 12115/98 — _ <br /> Well no longer monitored or sampled <br /> TEX-1 10/26/95 (c) 1286 — — — <350 <5 <05 <05 <0 5 -- — <br /> 2112196 1090 — — — _ <br /> 4/18/96 1135 -- — — <50 <05 <0 5 <0 5 <0 5 — — <br /> 7118/96 1152 — — — _ <br /> 11!15196 1230 — — <br /> 3/14/97 — — — <br /> 614/97 <br /> 8/11/97 — <br /> 3/30198 1100 <br /> 6/25/98 100 <br /> 9/11/98 <br /> 12/15/98 1147 — — -- — — — — -- — 01 <br /> 5/14/99 1160 — — .. — — — .. — 480 <br /> =Indicates not measured or sampled a)All elevations corrected to an arbitrary datum based on a <br /> TPH-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=Wlm+(b)(p)),where Wlc=water-level <br /> MSL =Mean Sea Level elevation corrected,Wim--water-level elevation measured,b=hydrocarbon thickness(feet), <br /> MTBE -Methyl Tertiary Butyl Ether by EPA Method 8020 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 confdmation analytical results(by EPA 8260) <br /> DO = Dissolved Oxygen <br /> 077 41728 005/GW Tables <br />