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r , <br /> Mw-10)K Former �T�N <br /> { Former Station <br /> Waste 011 Building Target Shopping Center Parking lot <br /> W Tank � � Groundwater monitoring well <br /> z . I' / 0 Groundwater recovery well <br /> _ Re I on it Vapor extraction well <br /> 19 19 —19.46 x Abandoned well <br /> X MW-48 <br /> 9999 Groundwater elevation in feet <br /> M$ referenced to Mean Sea Level <br /> Ol -19 73 gg' Groundwater elevation contour, <br /> 1,�g6 Mss; ,, <br /> � W-1 w�s 69\ .199 dashed where inferred <br /> —1973 * Discontinued from monitoring/ <br /> sampling program <br /> Former iJndergound i� * - r DRY <br /> Storage Tanks 19.85 --19 79 <br /> MW-9 " * MW+S dft 'W--7 pi l_1958 <br /> g 5 <br /> # 't VW_6 MW- Mw-�6 -�20 09 MW-14 <br /> —1965 1 1-19�� —20 05L L I� l� 1. L <br /> ,t ' —19 98 20.15 Mw-11 <br /> 7 4 6� —19.92 <br /> ormer _ <br /> Dispenser — _� — — Approximate groundwater <br /> ---islands— flow direction at a <br /> 0 aol d-. gradient of 0 002 to 0 01 Ft./Ft. <br /> PACIFIC AVENUE — _ 0 60 <br /> xMw-1z <br /> p p Scale in Feet <br /> XMW-15 Source <br /> Mw-13 —20.46 Topography based Well locabons eupon ofield observations Monrow Surveying <br /> Former facilities based upon Unocal Site Plan <br /> INC . POTENTIOMETRIC MAP RWRE <br /> iNGETTLER - 11YAN CFormer Tosco (Unocal) Service Station #6981 <br /> 6747 Sierra Ct Suite J 4707 Pacific Avenue <br /> 0ublin, CA 94568 (925) 551-7555 Stockton, California <br /> PROJECT NUMHER REVIEWED 6"f DATE REVISED WE <br /> 180138 March 29 and 30 2003 <br /> FILE NAME P EWRO TOSCO 6481 003-6981 DWG I Layout Tab NO <br />