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*Table 1 01 of 1 <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) (mgA) (mgA) <br /> W 1 A 1/21/2000 P 4305 5484 -1179 -- <50 <0 50 <0 50 <0 50 <0 50 <2 0 29 - <br /> 4/28/2000 P 4305 5399 -1094 085 <50 0 610 <0 50 <0 50 <0 50 <2 5' 462 — <br /> 9/5/2000 P 4305 5847 -1542 -448 <50 <0 50 <0 50 <0 50 <0 50 <2 0 60 <br /> W2 1/21/2000 P 4253 5444 -1191 -- <50 <0 50 <0 50 <0 50 <0 50 <2 0 31 - <br /> 4/28/2000 P 4253 5356 -1103 088 <50 <0 50 <0 50 <0 50 <0 50 <2 5` 343 - <br /> 9/5/2000 P 4253 5798 -1545 -442 <50 <0 50 <0 50 <0 50 <0 50 12 3` 27 - <br /> W2A 1/21/2000 P 4089 5462 -1373 393 <0 50 <0 50 <0 50 <0 50 <2 0 26 -- <br /> 4/28/2000 P 4089 5383 -1294 079 2,640 <5 0 <5 0 192 538 <25` 091 - <br /> 9/5/2000 P 4089 5839 -1750 -456 718 0 549 0 667 375 618 <2 0 34 <br /> W2B 1/21/2000 P 4271 5475 -1204 -- <50 <0 50 <0 50 <0 50 <0 50 <2 0 24 -- <br /> 4/28/2000 P 4271 5396 -1125 079 <50 <0 50 <0 50 <0 50 <0 50 <2 5' 663 - <br /> 9/5/2000 P 4271 5859 -1588 -463 <50 <0 50 <0 50 <0 50 <0 50 <2 0 12 -- <br /> W3 1/21/2000 P 4246 5441 -1195 -- <50 <0 50 <0 50 <0 50 <0 50 <20 23 -- <br /> 4/28/2000 P 4246 5347 -1101 094 <50 <0 50 <0 50 <0 50 <0 50 <2 5` 121 -- <br /> 9/5/2000 P 4246 5802 -1556 -455 <50 <0 50 <0 50 <0 50 <0 50 <2 0 5 -- <br /> W9 1/21/2000 P 44 40 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 /> 11/11/2000 P 4440 5938 -1498 065 <50 <0 50 <0 50 <0 50 <0 50 <2 50 NM <5 0' <br /> TOC =Top of Casing <br /> MSL =Mean Sea Level <br /> TPH-G =Total Petroleum Hydrocarbons as Gasoline by EPA Method 8015,Modified <br /> O&G =Oil and Grease determined by 413-1 <br /> ` =MTBE(Methyl Tertiary Butyl Ether 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 /> mgA =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 <br /> 4 <br />