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F_XPLANATION <br /> + Groundwater monitoring well <br /> 9999 Groundwater elevation In feet <br /> CENTRAL AVENUE referenced to Mean Sea Level <br /> Former (MSL) <br /> Underground <br /> Storage gg99/ Groundwater elevation contour, <br /> Former / dashed where inferred <br /> 38 73 u.� Underground <br /> _ Storage <br /> `* Tanks oot Y <br /> S <br /> Concrete <br /> IslandCanony _ �cr <br /> 1 c Former 38.72 ` 38 44 <br /> Station <br /> Wells Budding .• 1 *U-6 <br /> Fargo Approximate groundwater <br /> Building U-3 U-Z F. flow direction at a <br /> U-S % _ 38.78 % W gradient of 0 005 Ft./Ft. <br /> 1 3915 38.95 { <br /> 1 Former � I ON F <br /> W/o <br /> Tank Farmer = Furniture <br /> Dispenser r Stare <br /> Island <br /> Approximate Property Boundary <br /> Asphalt <br /> Patch <br /> I <br /> Z <br /> D 40 <br /> Source. Figure modified from drawing pwded by MMS Sa mcm I= Scale in Feet <br /> Gettler - Ryan Inc. POTENTIOMETRIC MAP RO"RE <br /> Former Unocal Service Station #0123 <br /> $747 sperm ct-, Suds J 1034 Central Avenue <br /> uablin, CK 9M (925) 551-75% Tracy, California I <br /> JOB NUMBER REVIEWED BY DATE REV= DATE <br /> 280047 June 19 2000 <br /> FILE M MF- P EWR0 UN 012J 000-012 Layout Tab POT2 <br /> I <br />