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TPHg=<5D <br /> rPxg=170 <br /> x x x x TPHd=1800 x ` TPHd=<5D x x x x x <br /> ° 8=07 B=<D5 <br /> MTBE=<5 MW 3 MTBE=<5 TPHg=<50 <br /> OMW 4 1 �� Former rPHB=<05 <br /> �. Former 5 000 Gallon I UW 1 10 000 Gallon MTBE_<5 <br /> Diesel USr =� . �—, G`sotrneUST <br /> / Approximate--i-I 11 1 �� <br /> TPHg=<sD // Excavation 1 �� Training Roam/ <br /> TPHd=<50 Limits TPHg=5700 �MW80 yMT8E=<5 <br /> Environmental Office <br /> B=32 TPHd=2 400 ��B=1800 Mr8E=30 C:0MW 5� ! 1 Former El ❑ VW 2x_ x�-- - MW2 <br /> 1Pump Island Gas o0o p� <br /> 1 I O . House <br /> MW 10 1 I O� ,Former <br /> TPHg=<50 1 41 Pump Island <br /> TPHd=<50 MW 2 ! MW 1 rPNg=<50 office <br /> 8=08 / ! ! TPHd=<50 Trailer Mamfena= <br /> TPHd=M <br /> MTBF=<5 I / / / 8=<DS Regional <br /> B 79 <br /> 1 / MTBF=<5 Office <br /> MTBF= ` / / ( TPHg=260 <br /> \\ \ \ ! rPNg=72 1 TPHd=<50 <br /> TPHd=<5D 6=67 <br /> TPHg=13 000 B=<05 /1 MTBE=<5 T@MW 7 <br /> TPHd=3 400 MTBE_<5 <br /> B=2200 / <br /> MTBE=<20 <br /> MW-6 <br /> TPHd=<50 <br /> 8=<D5 <br /> MTBF=c 5 <br /> SE <br /> E <br /> MW T9@ Sealand container Storage Trailer <br /> IK <br /> -X <br /> x x <br /> rPNg=100 <br /> LEGEND TPHd=c 5D <br /> O GEOCON Groundwater Monitoring Well Location MTBE=<5 0 40 <br /> Maintenance& <br /> Electricians X Scale in Feet <br /> $ Alton Geoscience Groundwater Monitoring Wells Location warehouse <br /> ® GEOCON Vapor Extraction Well Location @MW 11 <br /> UST Underground Storage Tank <br /> CONSULTANTS, INC <br /> Historical Groundwater Flow Direction 11375 SUNRISE PARK DR -SUITE 100 RANCHO CORUOYA CA 95742 <br /> PHONE 916 652 9110-FAX 916 852 9132 <br /> 1,000— — —TPHd lsoconcentration Contour(ug/1) Stockton Yard Maintenance Station <br /> 1,000----TPHg lsoconcentration Contour(ug/1) 1604 South B Street PETROLEUM <br /> HYDROCARBONS CaliforniaJoaquin County,TPHg = Total Petroleum Hydrocarbons as Gasoline(ug/1) San IN GROUNDWATER- <br /> TPHd = Total Petroleum Hydrocarbons as Diesel(ug/!) GEOCON Prod No S8475-06-24C DECEMBER 2002 <br /> B = Benzene(ug/!) <br /> MTBE = Methyl tert-butyl ether(ug/!) rTaskOrderNo 10-987901-MU January 2003 Figure 3 <br />