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� I EXPLANATION - <br /> Mw-io 1 a <br /> ♦ Groundwater monitoring well <br /> l = <br /> I _ � Destroyed well <br /> !) <br /> 1CL <br /> 0 Recovery well <br /> Z <5011 0 0 Vapor extraction well <br /> <0 50 E <br /> -a 1 <2 0 Station 1 AIBIC TPH(G) (Total Petroleum <br /> = Building - Remediation a <br /> �' Hydrocarbons as Gasoline)/ <br /> Enclosure <br /> i MW-8 <50/ I 1 Benzene/MTBE concentrations <br /> 1 0 95/ 1 In ppb <br /> <50/ 46+ ♦MW-8 <br /> <0 50/ 1 <50/<0 50/<2 0+ l <br /> 30+ -_ MW,1 » - NS Not Sampled <br /> -IV--1 #MW-4 <50/ 1 23,000/2,000/75+ + MTBE b EPA Method 8260 <br /> Underground 1 i-----I -- <0 50/<2 0+ Y <br /> Storage Tanks ,1- -- ' Kiosk NS GVW-a <br /> -----� vw s DRY <50/<0 50/<2 0+ <br /> - <br /> �vw-7 <50/4 2/210+ <br /> +MW_9 1MW-3 VW-3 MW-5 <br /> <50/ 13 w-e r_ _ MW-2 0-t 1 <50/<0 50/170+ <br /> v <br /> <0 50/ NS VW-4 ♦ W-ie ♦Mw-7 MMW-14M <br /> <2 0+ <br /> <50/ -- <50/<0 50/4 0+ <br /> Dispenser 4,600/78/130+ <br /> 06012,500+ Islands <br /> 490/62/140+ <br /> <50/ 19,000/ PACIFIC AVENUEI <br /> 0 72/ 66151+ _ <br /> Z <br /> <2 0+ <br /> 0 60 <br /> • +� Mw W ♦Mw-�a MW-12 <br /> So,-F+g�rs Mot Fro,,, "'_nq FroMW 1 <50/<0 50/7 2+ Scale in Feet <br /> sy 1�PDs sem. Inc. <br /> CONCENTRATION MAP FIGURE <br /> imGetter - Ryan Inc. Tosco (Unocal) Service Station No 6981 <br /> 6747 Sierra Cl. Suite J (925) 551-7555 4707 Pacific Avenue 2 <br /> Dubin. CA 94M Stockton, California <br /> JOB NUMBER REVIEWED BY DATE REVISED DATE <br /> 180138 Januar 27 and 28 2000 <br />