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TPHg=<50 TPNg=60 <br /> TPNd=<50 x 7PNd=<50 x x x x x <br /> x O x x x 8=<05 <br /> 8=<05 MTBE=<5 TPNg=<50 <br /> MTBE_<5 TPNd=<50 <br /> MW a BMW 3 Farmer B=<05 <br /> 2� Former 5,000 Gallon VW 1 10,000 Gallon MTBE=<5 <br /> Diesel UST— _F Gasalme UST <br /> Approximate- —II p <br /> TPHg=<50 Excavation MW 8 Training Room/ <br /> TPNd=<50 tfmftS TPHg=5 200 © TPHg=<50 Environmental Office <br /> 8=<0 5 7PNd=1 700 TPHd=<50 <br /> MTBE=<5 8=1500 8=<05 <br /> x MT8f=34 MTBE=<5 <br /> x <br /> y � ❑ x x <br /> MW 50 FormerVW' <br /> /T— MW 12© <br /> E4ousse <br /> Pump Island�- �-Formai <br /> @MW 10 yy _Pump Island <br /> TPHg=<50 .� �� �/� Office <br /> TPNd_<0 5 j MW 2� y L TPNg=<50 Trailer <br /> TPHg=<50 MTBE_<5 1 I <br /> d ODQ y TPHB=c 5 Maintenance e <br /> TPHd=<50 �i MTBE_<5 Office <br /> 8=<05 ' <br /> MTBE_<5 lot <br /> TPNg=85 TPNd50 TPHg 8=<05 <br /> TPHd MTBE_<5 MW 7 <br /> 8 <br /> MTBE <br /> OMW 6 <br /> TPNg=<50 <br /> TPNd=<50 <br /> 8=<05 <br /> MTBE_<5 <br /> SE <br /> E <br /> MW- Sealand Container Storage Trailer <br /> Ix <br /> � 40 x x x <br /> TPHg=<50 <br /> TPHd=<50 <br /> B=<D5 <br /> LEGEND MTBE=<5 Maintenance& <br /> Electricians i Scale in Feet <br /> O GEOCON Groundwater Monitoring Well Location warehouse <br /> Alton Geoscience Groundwater Monitoring Wells Location @MW 11 <br /> ® GEOCON Vapor Extraction Well Location <br /> CONSULTANTS, INC <br /> UST Underground Storage Tank 3160 GOLD VALLEY OR -SUITE 800 RANCHO CORDOVA CA 95742 <br /> PHONE 916 852 9118-FAX 916 652 9132 <br /> Historical Groundwater Flow Direction Stockton Yard Maintenance Station <br /> 1,000----Petroleum Hydrocarbon lsoconcent ration Contour(ug/1) 1604 South B Street PETROLEUM <br /> TPHg = Total Petroleum Hydrocarbons as Gasoline(ug/1) San Joaquin County, California HYDROCARBONS <br /> TPHd = Total Petroleum Hydrocarbons as Diesel(ug/I) GEOGON Pro No S8475-06-241 �N GROUNDWATER• <br /> B = Benzene(ug/I) <br /> 1 NOVEMBER 20D3 <br /> MTBE = Methyl tent-butyl ether(ug/q Task Order No 10-987901-MU: December 2003 Figure 3 <br />