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• • i <br /> MW-10X Former <br /> Former Station EXPLANAMN <br /> Waste 011 Building Target Shopping Center Parking Lot <br /> _ Tank I �\N Groundwater monitoring well <br /> Groundwater recovery well <br /> \ Re ibmon im Vapor extraction well <br /> cc X120/4 4/<2 0 Z X <br /> su x Abandoned well <br /> i <br /> (( (( `190/7 6/<2 0 A/B/C Total Petroleum Hydrocarbons <br /> i l i 200/ -6 \ (TPH) as Gasoline/Benzene/ <br /> MTBE concentrations in ppb <br /> Mme- \ <20 \ <br /> <50/1 1/<2 0 W 1 VW 1 W-4 <50/0 7`9/<2.0 // NS Not Sampled <br /> 160/ � \ i ❑ <br /> X <br /> - NS DRY 30,000/380/<100 Inaccessible <br /> 551 Former Undergound <5010 7913 6 <br /> <2.0 Storage Tanks3, , 360/49/17 Note All analyses by EPA <br /> MW-9 t MW+s rrw-7 / Method 8260 <br /> 1 Prw-� <br /> 4 M -3 VW-6 MW-2 MW-16 MyY-7 MW-14 <br /> El <br /> �W- . .LLLLLLL . � LLLL LLL <br /> MW-11 <br /> 55/5 6/3,0 <br /> _ Former _ <br /> <50/<0 50/<2 0 �.�aens eer 10,0001900160 —<0 50/— <br /> <50/2 0/<2 0 < <2 0 DRY — <br /> J, �2 <br /> -� PACIFIC AVENUE 0 so <br /> p X MW-12 <br /> Scale In Feet <br /> X MW-15 Source <br /> Well locations based upon survey by Morrow Surveying <br /> MW-13 <br /> 551<0.50164 Topography based upon field observabons <br /> Former facildies based upon Unocal Site Plan <br /> CONCENTRATION MAP RGURE <br /> GETTLER ' RYAN INC. Former Tosca (Unocal) Service Station #6981 <br /> 6747 Sierra Ct, Suite J 4707 Pacific Avenue 2 <br /> Dublin, CA 94568 (925) 551-7555 Stockton, California <br /> PROJECT HUMBER RENEWED BY DATE REVISED DATE <br /> 180138 September 30 2002 <br /> FILE NAME P EWRO TOSCO 6981 002-6981 0WC I Layout Tab Coni <br />