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ROSE MARIE LANE <br /> Planter <br /> ' f MW-1 <br /> �\ -851 <br /> Waste (ND) <br /> ---- Oil (ND) <br /> Tank <br /> � W <br /> 0 ------- ----. z <br /> Air& -540= <br /> Water <br /> ---- ---- --- C_7 <br /> Z <br /> Fuel USTs <br /> ---------------- v] <br /> ------------------ 00 <br /> .830 <br /> 0. <br /> Station <br /> Building , <br /> } Canopy and <br /> MW-2 Dispenser Exxon <br /> -8 23 , \ Islands Monitoring <br /> (ND) Well <br /> N (ND) _ <br /> - Vent Lines - - - - - - - :-kMW-4 <br /> - _ <br /> (D -2 -822 <br /> - -- ----NA--------- <br /> - (ND) <br /> -- -- --- - -- -- ---------- <br /> (ND, 12-Aug-98) vEw-1 (ND) <br /> NA MW-3 <br /> IL (ND) -828 <br /> EXPLANATION (7 z) (ND) <br /> -W Ground Water Monitoring Well - - (ND) <br /> Vapor Extraction Well _ Former USTs <br /> Ground water elevation contour in feet referenced Location <br /> to mean sea level (MSL) Arrows indicate <br /> approximate ground water flow direction <br /> -822 Ground watei elevation in feet Scale <br /> (ND) Benzene concentration in ppb <br /> ND=Not Detected 0 10 20 40 Feet <br /> (ND) MTBE concentration in ppb 1 Inch=20 Feet <br /> Note Monitoring performed on 28-Oct-98 <br /> Approximate Hydraulic Gradient= 0 004 Baso map from Fugm map of 12 Noy 1992 <br /> PLATE GROUND WATER CONTOUR/CHEMICAL CONCENTRATION MAP <br /> Shell-branded Service Station CAMBRIA <br /> 2 4445 Pershing Avenue 240-0837 <br /> Stockton, California <br /> Drawn by IN Date 07-]an-99 Approved ByL,. Date / ► <br />