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0 <br /> SUMMARY OF GROUNDWATER MONITORING DATA <br /> Third Quarter 1993 <br /> ARCO Service Station#2168 <br /> 441 Charter Way, Stockton <br /> (micrograms per Inter(ltg/1),unless noted) <br /> Floating Total <br /> Well ID Depth to Product Oil& Hydrocarbons, 1,2- 1,2- <br /> and Sample Sampling Water Thickness Ethyl- Total TPH as Grease IR Dichloro- Dichloro- <br /> Depth Date (feet) (feet) Benzene Toluene benzene Xylenes Gasoline (ppm) (ppm) ethane propane <br /> MW-1 (54) 09/02/93 3950 -- 7,500 700 620 2,300 27,000 -- -- 53 ND <br /> MW-2(53) 09/02193 3986 -- 3,340 1,800 260 1,200 18,000 10 90 15 4 5 <br /> MW-3(53) 09/02/93 3823 -- 13,000 2,200 2,100 4,500 49,000 -- -- 06 ND <br /> MW4(59) 09/02/93 4159 -- 12,000 21,000 2,700 13,000 110,000 -- -- 87 12 <br /> MW-5(55) 09/02/93 3823 -- 7,900 6,600 990 4,800 51,000 -- -- 200 75 <br /> TPH=Total petroleum hydrocarbons <br /> ND=Not detected <br /> 0071-038 01 <br />