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1 <br /> x <br /> x Former Waste Oil <br /> UST L ocation <br /> x aSB-22 0MW-7 <br /> � TPHg=<50 N <br /> a TPNd=63 <br /> x 58-9 TPHg=70 y B=<05 <br /> ® <br /> Shop Building TP <br /> =<50 MTBE_<0 5 <br /> 8=26 v 3 MW-12x <br /> x MTBE_<0 5 ti Office <br /> Building <br /> TPHg=6 300 <br /> x TPHB= 124 <br /> MW 19 B=2 300 MW-24 b <br /> MTBE=43 <br /> TPHg=<50 k <br /> x TPHB=<50 Ss-i8 <br /> 8= 12 <br /> MTBE_<0 5 MW-14 c <br /> y I W <br /> W <br /> Former Gasoline/ <br /> Mw� Jgl oc <br /> Diesel UST Locations MW-6 �- <br /> x � Driveway y <br /> Location of future 'MW-25 --®ss-is---VM-1 �� VM-2 <br /> Caltrans Building <br /> x I MW f M-1 MW-4 MW- <br /> 13 <br /> - ---- TPHg=60 --- MW-7 0 ' - I x 1 <br /> TP <br /> =<50 !8! TPHg=4,300 <br /> x i B=2 6 MW-2 TPHg <br /> = <br /> MTBE_<4 5 B=470 TPN =2 500 i x y I <br /> MTBE=34" TPHd= 170 <br /> x i B= 1000 TPHg= 100 LEGEND <br /> AS-1O MTBE= 11 i x TPHB=3 8D <br /> ss-i 7O i MTBE=5 1 Vw-tom <br /> I � Location of Existing Vapor <br /> Mw 26 Extraction Well <br /> QSB.Z 1 1 VM-1 <br /> Location of Existing Vapor Extraction <br /> Test Monitoring Wells <br /> BMW-8 1 <br /> - APw'90 Location of Soil Boring and Former <br /> x ; ; Groundwater Monitoring Well <br /> Mw-16 I i I Mw-10 Location of Existing Groundwater <br /> ------------- Monitoring Well <br /> TPHB=50 MW-9 ss-s® Location of Soil Boring <br /> x TPHB= 1 80 x TPHg=<5o x Fence Line <br /> MTBE_<0 5 y TPHB=64 i <br /> x <br /> TPHg B=<05 <br /> TPHB=8D �? MTBE_<0 5 TPHg = Total Petroleum Hydrocarbons as Gasoline <br /> B 17 <br /> MTBE=0 8 Mw-11 TPHB = Total Petroleum Hydrocarbons as Diesel <br /> x 8 = Benzene <br /> FTPN -<54 MTBE Methyl-tert-butyl-ether(EPA Test Method 8020) <br /> 59- All Concentrations rn Micrograms per Liter(ppb) <br /> TPNd=<5D <br /> x <br /> B=27 Nondetected Concentration of MTBE When <br /> MTBE_<0 5 x <br /> Analyzed by EPA Test Method 8260 <br /> x Storage Building <br /> x � <br /> x Mw-20� � � <br /> 0MWS x ENVIRONMENTAL CONSULTANTS INCORPORATED <br /> ' x x x x x x x x x x x x x x x x x' X- x k' k� 3235 SUNRISE$LVD -SUITE 6-RANCHO CORDOVA CALIFORNIA 85762 <br /> ?HONE 915 652 9118-FAX 916 852 9132 <br /> Maintenance Station Groundwater Monitoring Project <br /> Caltrans District 10 Shop 10 Facility <br /> 0 50 Stockton, California maintenance <br /> aConaennc St tion <br /> Scale in Feet Gof <br /> EOCON Prol No 58100-06-62 Petroleumrundwaterbons <br /> ' Task Order No 10-911175-A9 November 1996 Figure 3 <br />