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SUMMARY OF GROUND-WATER MONITORING DATA <br /> Third Quarter 1992 <br /> ARCO Service Station 92168 <br /> 441 Charter Way,Stockton <br /> (micrograms per Iter(ugA)or parts per billion(ppb) <br /> Floating <br /> Well ID Depth to Product Ethyl- Total TPI{as Total 1,2- 1,2- <br /> and Sample Sampling Water Thickness Benzene Toluene benzene Xylenes Gasoline Oil& Hydrocarbons, Dlchloro- Dkhloro- Total Fical <br /> Depth Date (feet) (feet) (ppb)- (ppb)_ (ppb) (ppb) (ppb) Greasy Gravimetric ethane Propane Collform Collform <br /> MW-1 (54) 8!2411992` 4206 - 4,100 330 310 490 14,000 - -- 25 09 - -- <br /> MW-2(53) 812411992- 4244 - 2,400 1100 110 600 12,000 06 ND 17 51 - <br /> MW-3(54) 8/2411992' 4084 - 15,000 9,400 2 300 2,300 77,000 -- -- 30 ND c2 2 <22 <br /> TPH-Total petroleum hydrocarbons <br /> ND•Not detected <br /> '.The sample for Total emd Fecal Coliform analysla was collected on August 25, 1992 <br /> G71-39 01 <br />