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Table 4 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Station No 2186 <br /> 3212 North California Street,Stockton,California <br /> Well Depth Groundwater Ethyl- Xylenes <br /> Well Date P/NP Elevation to Water Elevation GRO Benzene Toluene benzene (total) MtBE* DO <br /> Number Sampled (ft,MSL) (ft,TOG) (ft, MSL) (/rg/L) (/rglL) (/rg/L) OWL) (pg/L) U/9/L) (mg/L) <br /> MW-8 5/5/2004 P 1428 4640 -3212 <50 <0 5 <0 5 <0 5 <0 5 23 <br /> AW-1 5/5/2004 P 1422 4471 -3049 97 63 <5 0 <5 0 80 150 <br /> Notes <br /> = analyzed using U S EPA Method 8260 <br /> < = below given laboratory detection limit <br /> = not measured or calculated <br /> DO = dissolved oxygen post purge <br /> ft = feet <br /> GRO = gasoline range organics <br /> mg/L = milligrams per liter <br /> MSL = mean sea level <br /> MtBE = methyl tert-butyl ether <br /> i <br /> P/NP = purged/not purged <br /> TOC = top of casing <br /> U S EPA =United States Environmental Protection Agency <br /> Ng/L = micrograms per liter <br /> i <br /> K 1Wprocess\J5 BP ARCO\02186\2004 Assessment\Report04 Data Tables <br />