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EXPLANATION <br /> + Groundwater monitoring well <br /> A/B/C/D TPH(D) (Total Petroleum Hydrocarbons <br /> CENTRAL AVENUE as Diesel)/fPH(G) (Total Petroleum <br /> Former Hydrocarbons as Gasoline)/Benzene/ <br /> Underground MTBE concentrations in ppb <br /> Storage <br /> Tanks ND/ND/ND/ND Former ND Not Detected <br /> Underground <br /> U-1 Storage <br /> Tanks <br /> Concrete - FN'p <br /> Island <br /> i .Canopy ... , ,,,. U-4 <br /> Former '1' ' NDI <br /> ��n <br /> Fbrgo <br /> Station <br /> - 54/ U-6 <br /> 9.5 <br /> Building .� U,3 ND/U-2 ND F ND/ <br /> U-5 •ND/ W ND/ <br /> 1 VD/ND/ND/ND fjND1 ND 1 oC Al <br /> I Former ND/ 1 ND <br /> Tank ND Former = <br /> Tank Dispenser 11- <br /> Ir <br /> Fuge <br /> Wand V, <br /> Approximate Property Boundary <br /> Asphalt <br /> Patch I <br /> _Z.�� <br /> o I 40 <br /> Scale in Feet <br /> Source: Figure mcd'ified from &wng provided by MMS Semce% Inc. <br /> CONCENTRATION MAPFIGURE <br /> - Ryan Inc. Former Unocal Service Station #0123 <br /> 6747 Sierra Ct„ sub d 1034 Central Avenue 2 <br /> Dublin, CA M68 (925) 551-7W Tracy, California <br /> JOB NUMBER REVIEWED Br DATE REVISED DATE <br /> 280047 June 19 2000 <br /> RENAME. P- DMRo Uirocu o i <br />