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I <br /> 1 } <br /> i <br /> Caltrans Construcltan <br /> iDivision <br /> X <br /> Office w1 <br /> ' x Office ■� <br /> iTrader <br /> ' X TPHg=<50 <br /> TPNd=<50 <br /> MW 12 B=<03 <br /> MTBE=<05 <br /> x <br /> %-J( %�LLx % -% % X X--- <br /> X Chan Lnk Fence <br /> TPHg=360 <br /> ' X TPHd= <"50 <br /> B=55 <br /> TPNg=340 MW 9O <br /> c MTBE= 100 TANd=<50 <br /> LT B-59 <br /> x c MTBE=52 Storage Warehouse <br /> - <br /> %� TPHg= <50 I <br /> �U <br /> TPHd=<50 <br /> MWS OO B= c03 <br /> MW; MTBE= <05 <br /> X TPNg= Y0 000 TPNg= l6 000 <br /> 700 B=3000 <br /> w MTBE_<50 MT8E=<50 TPNg= 7 200 <br /> TPNd= -50 TPNg=500 <br /> B= 280 <br /> TPNd=<50 <br /> ' Driveway 8112 MTBE= 100 <br /> B=35 <br /> Vyy 1 Concrete MW <br /> MTBE= i70 <br /> °O (� VW-2 S9-3 Former Pump lslan i <br /> x T-fl <br /> T'2' MW-iii <br /> MW 6 STOCKTON <br /> Q X MW-3 Building O YARD <br /> FACILITY <br /> TPHg= 180 TPNg= 900 <br /> TPHd= <50 X TPNd= <50 <br /> B= 20 8= 380 <br /> MTBE= 84 Approximate Location Former Pumplslani MTBE= <05 <br /> of Underground Concrete BMW 2 <br /> Fuel Tank Cavity <br /> ��TTPPH5d <br /> <50Driveway <50LEGEND 23 <br /> <0 5 <br /> ' X� OMW-4 <br /> ° OMW 5 <br /> X ° <br /> Proposed Groundwater Monitoring Well <br /> ' MW-4 through MW-12, GEOCON X IN <br /> Groundwater Monitoring Wells { 8- < TPHg=51 <br /> ! TPHd= <50 Maintenance Facility <br /> $ MW-1 through MW-3, Alton Geoscience j MTBE= 03 <br /> <05 <br /> ' Groundwater Monitoring Wells, March 1992 1J <br /> G SB-1 and SB-2, Alton Geoscience % <br /> Soil Borings, March 1992 <br /> ®' SB-3, GEOCON Soil Boring X BMW 10 TPHg=<50 . • a� <br /> TPN =<50 <br /> VW-1 &VW-2, GEOCON Vapor Extraction Wells X B B=<03 <br /> MTBE=<05 ENVIRONMENTAL CONSULTANTS INCORPORATED <br /> T-7 Former 10,000 Gallon Unleaded Gasoline UST PHONE 816 3235 SUNRI852 9SE BI.118-FAX 916 652 9i32 <br /> V6 --SUITE 6-RANCHO CORDOVA CALIFORNIA 95742 <br /> T.2 Former 5,000 Gallon Diesel Fuel UST I <br /> Caltrans Stockton Yard Maintenance Facility <br /> TPHg = Total Petroleum Hydrocarbons as Gasoline 1604 South B Street CONCENTRATIONS <br /> TPHd = Total Petroleum Hydrocarbons as Diesel 0 40 Stockton, California OF PETROLEUM <br /> B Benzene HYDROCARBONS <br /> MTBE = Methyl tent bury!ether GEOCON Prol No S8100-06 11 B IN GROUNDWATER <br /> Al Concentrations in Micrograms pert,ter(ppb) Approx ScalelnFeet <br /> ' Task Order No 10-51`1000-14 April 1996 Figure 5 <br />