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EXPLANATION <br /> EAST MAIN STREET ♦ Groundwater monitoring well <br /> (Shallow). <br /> Mw-2♦ N9 _ ♦ Groundwater monitoring well <br /> Former (Deep) <br /> <50/<0.5/<2 W/0 Tank <50/<0.5/<2 <br /> MW-1 A/B/C. Total Petroleum Hydrocarbons <br /> \ Lawn -— ♦ <br /> Trash (TPH) as Gasoline/Benzene/ <br /> 4. Enclosure I MTBE concentrations in ppb <br /> canopy NOTE: Benzene and MTBE analyses' <br /> by EPA Method $280 <br /> Station � Dispenser <br /> 41 Building ! Islands <br /> 47 [,q) <br /> Paving <br /> <50/<0.5/9- v __.- <br /> _ r <br /> MW-8 ♦Mw-4 <br /> �9y, \# ♦ <50/<0.5/<2 <br /> 99 - <br /> MW-6D-iy UT, <br /> <50/<0.5/<2\Mmw-6S pad Former <br /> <50/<0.5/<2�o usTs <br /> MW-5s<501<0.5/<2 <br /> ND Mw-50 <br /> -MW-7D <br /> D: Mw-3 <br /> O <br /> r..w <50/<0.5/<2 . <br /> _N_ <br /> <50/<0.5/<2 j <br /> on—Ramp 0 40 <br /> Scale in Feet <br /> Source: Figure madified from drawing provided by Secor International tne. <br /> ` CONCENTRATION-MAP- -� rlcuRE <br /> m... __ - <br /> GFTTLFR - RYAN INC. Chevron Service Station #9-1452 <br /> 6747 Sierra Court, Su+te J 334 East Main Street 2 <br /> Dublin, CA 94568 (925) 551-7555 Ripon, California <br />! PROJECT NUMBER REVIEWED BY DATE REVISED DATE <br /> 388582 November 28 2005 <br /> FILE NAME: P:\Enviro\Chevron\9-1452\005-9-1452.DWG I Layout Tab: Con4 <br />