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Oablel *of 2 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#434 <br /> 501 West Kettleman Lane,Lodi,CA <br /> Well Depth Groundwater Groundwater Ethyl <br /> Well Date Elevation to Water Elevation Elevation TPH G Benzene Toluene benzene Xylenes MTBE DO O&G <br /> !Name Sampled (feet,MSL) (feet,TOC) (feet,MSL) Change(feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mgll) (mg/1) <br /> W9 1/21/2000 P 4440 5616 -1176 -- <50 <0 50 <0 50 <0 50 <0 50 558 25 <br /> 4/28/2000 P 4440 5527 -1087 089 <50 <0 50 <0 50 <0 50 <0 50 <2 5' 593 <br /> 9/5/2000 NP 4440 6003 -1563 -476 113 <0 50 <0 50 <0 50 707 <2 0 NM 430 <br /> 11/1/2000 P 4440 5938 -1498 065 <50 <0 50 <0 50 <0 50 <0 50 <2 50 NM <5 0' <br /> 12/15/2000 P 4440 5821 -1381 1 17 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 109 800 <br /> 3/15/2001 P 4440 5644 -1204 177 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00' 176 <5 00 <br /> 5/11/2001 P 4440 5643 -1203 001 <50 0 <0 50 <0 50 <0 50 <0 50 <2 00* 334 <5 0 <br /> Trip Blank 5/11/2001 — — <50 0 <0 50 <0 50 <0 50 <0 50 <2 00 <br /> TOC =Top of Casing <br /> MSI. =Mean Sea Level <br /> TPH-G =Total Petroleum Hydrocarbons as Gasoline by EPA Method 8015,Modified <br /> O&G =Oil and Grease determined by EPA Method 5520 B/F <br /> ' =MtBE by EPA Method 8260 <br /> P/NP =Well purged/not purged prior to sample collection <br /> < =Below detection limits <br /> ppb =parts per billion <br /> DO =Dissolved Oxygen <br /> mg11 =milligrams per liter <br /> 1 =Sample analyzed for Total Lead(EPA 6010)and chlorinated hydrocarbons(EPA 624) All were reported as nondetect <br /> =Not measured or analyzed <br /> I <br />