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• • M ~ <br /> ---------- <br /> U-9 EXPLAN TION <br /> <50/<0 50/<2 0+ <br /> <50/<0 50/ ♦ Groundwater monitoring well <br /> Approximate Properly Boundary <2 0+ <br /> _ _ ,—, to Vapor Extraction Well <br /> 1 <50/<0 50/<2 0+4" Former <br /> Nested piezometer wells <br /> Waste Oil <br /> 1 Former Tank Former I {W{I <br /> l Dispenser � A/9/C TPH(G) (Total Petroleum Hydro— <br /> Station <50/ <br /> Building 1 Island carbons as Gasoline)/Benzene/ <br /> I <0 50/ I s NP-2 62 MTBE concentrations in ppb <br /> <2 0+ <br /> I Y Former Underground Z { —116 NS Not Sampled <br /> Former Storage Tank Srte 43,000 ! <br /> 1 Waste <br /> Tank <501 <br /> rI 0/ �$ I 7� + LL + MTBE by EPA Method 8260 <br /> / Former -3 0.8 <br /> + <2 0+ Dispenser S <br /> 1 Islands lW� 3K NP-1-22 1,700/15/<2 0+ <br /> Former # I —65 <50/ 15,000/4,200/<10+ <br /> { Underground NS _lit <0,501<2 0+ 3901481<2 0+ <br /> - <br /> Storage Tanks <50/<0 50/<2 0+ I L <br /> ' 20 000 f 3� <10+ <br /> 48,000/3 f 00At.0+ <br /> 200/8 9/<2 0+ <br /> EAST MINER AVENUE �N <br /> 0 40 <br /> <50/<0 50/<2 0+ Scale in Feet <br /> ByParlang <br /> 1 ( <br /> CONCENTRATION MAP FIGURE <br /> Gettler - Ryan Inc. Former Unocal Service Station No. 0187 <br /> 6747 Sierra Ct., Suite J (925) 551-7555 437 East Miner Avenue <br /> 2 <br /> DW)K CA 94568 Stockton, California <br /> JOB NUMBER REVIEWED BY DATE REVISED DATE <br /> 280045 FebruaU 22 and 23 2000 <br />