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l EX.PLANATION <br /> X Mw-10 � <br /> Groundwater monitoring well <br /> I Groundwater recovery well <br /> I , <br /> IL Vapor extraction well <br /> E <br /> m x Abandoned well <br /> d <br /> Station x A/B/C TPH(G) (Total Petroleum <br /> Building Remediation a Hydrocarbons as Gasoline)/ <br /> + Enclosure $ Benzene/MTBE concentrations <br /> MW-8 <br /> <50 0/<0 500/<2 00+I i �n ppb <br /> �0.0/<0.500/ +Mw$ <50 0/<0 Soo/<z oo+ <br /> + MTBE by EPA Method 8260 <br /> Mw-1 �<2 00+-" <br /> 413/2.,28/<2.00++ OW-1 -*Mw.4 <50 0/<0 500/<2 00+ NA Not Available <br /> Underground c::= <br /> Storage Tanks � Kiosk -5 NA <br /> 4�a�i 34,400/853/<40.0+ <br /> <50 0/ 1 0<0 500/3 33+ -2 DRY <br /> MW-9 MW-3 *MWS 1/Y11-7 <50 8/<0 500/<2.00+ <br /> /—MW-2 PTW-1 <Jr0 0/<0 JrQO/188+ <br /> <50 0/<0 500/3.20+ I'K 0 Mw-14 <br /> =w-4 }Mw-1g +Mwa<50 0/0.659/58.5+— Mw-11 <br /> <50 0/<a 500/<2 00+ <br /> <50.011 00/2 38+ Dtspe <br /> is dsr73,6901,31 i/133+ <br /> 861/42 8/73 2+ <br /> C AVENUE l <br /> 12,700/12 81321+ —Z <br /> I <br /> x <br /> <50.0/<0 500/28.1+ x 0 60 <br /> �— <br /> MW-13 MW-15 MW-12 <br /> f/ Scale in Feet <br /> Source Figure modified from drowing prowled by MPDS Semites Inc FIGURE <br /> CONCENTRATION MAP <br /> GETTLER - RYAN IXC. Tosco (Unocal) Service Station #6981 <br /> 6747 Sierra Ct Suite J 4707 Pacific Avenue <br /> 2 <br /> Dublin, CA 94568 (925) 551-7555 Stockton, California <br /> PROJECT NUMBER REMENIM 9Y WE REVISED DATE <br /> 180138 March 7 and 8 2001 <br /> FlLE NAME. P ENVIRO TOSCO 8981 001-6981 DWG -Layout Tab Cont <br />