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U-9 EXPLANATION <br /> <50/<0.50 <br /> Approximate- Properly Boundary - - - --- <br /> Groundwater monitoring well <br /> I <br /> <501<0.50 U-a 1U-4 a Vapor Extraction Well <br /> : .... .... ... ... .�'.. ._. : former <br /> Waste oil t— 99/9.9 TPH(G) (Total Petroleum Hydro— <br /> FortnerTank Former I w carbons as Gasoline)/Benzene <br /> Station Dispenser. : I <br /> iE Building 520/t♦U 1 Island I concentrations in ppb <br /> :. 1 <br /> .. . . .. .. .. .. .. .. . . '. 7.8 I `JS Not Sampled <br /> ..... <br /> Former Former Underground 1 1 Z <br /> Waste Oil f ' : Storage Tank Site 28,000 - 0 <br /> Tank 000 1 LL <br /> U-e Former \ U-3 ) _J U-8 <br /> ♦- Dispenser �- . <br /> <501<0.50. ';...; Islands U ♦ 100/<0.50 <br /> Former0UV-1 I <br /> Underground/ ♦' ' _ I <br /> Storage Tanks U-p '.NS ---------- <br /> <501<0.50 <br /> ......_<50/<0.50 <br /> r <br /> EAST MINER AVENUE ,N, <br /> 1 <br /> 0 40 <br /> Scale in Feet <br /> <50/<0.50♦U-7 _ <br /> Source: rigors Yodifisd From Dmwing Presided <br /> Parking ,' ( By uFDs ...- , ht. <br /> Gettler " Ryan Inc. CONCENTRATION MAP FIGURE <br /> Former Unocal Service Station No. 0187 <br /> 6747 Sierra Cl., Suite J (925) 551-7555 437 East Miner Avenue <br /> Dublin, CA 94568 Stockton, California <br /> JOB NUMBER REVIEWED BY DATE REVISED DATE <br /> 280045 March 9 1998 <br />