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LP -- <br /> r1lHe <50 BQoPN8g <br /> <50 xx x x x <br /> 0 <05 MTBE===<<<i f55DD0 <br /> 5 <br /> TPNg=<50D <br /> MW 4 <5 MW 3 7PN <br /> @ Former 8=< 5 <br /> x x x x x <br /> �. Former 5,000 Gallon Vw1 10000 Gallon MTBE=<5 <br /> Diesel UST 111 a Gasohne UST <br /> Approximate— --,pr�� R_ — ��� Training Room/ <br /> 7PHp=<50 Excavation / Or MW 8 <br /> TPHd=<50 Limits 14 TPNg=a 900 , O TPHg=<50 Environmental Office <br /> 8=<05 / 7PNd=3900 \ TPNd=<50 <br /> MT8E=c5 / / / 8=2¢DD 1 \ 8=<05 <br /> / x MTBE=47 MTBF=<5 <br /> t I <br /> 00 <br /> 1� I <br /> MW 50 Former♦� VW 2 xxT` MW-12� <br /> Pump Island Gas <br /> House loo- <br /> / <br /> ©MW 10 / i// t� -Former <br /> TPNg=<50 1 d 49p%'=Pump Island <br /> TPHd=<50 MW 2 i'1'i i/ TPN -<50 Office <br /> B=<05 I I $ MW 1 p- Trailer <br /> i 10� TPNd=<50 Maintenance <br /> TPNg=<50 M78E=<5 t l \ 8=<05 Regional <br /> TPNd=<50 \ \ / MTBF=<5 Office <br /> B=<05 \ 1� <br /> MTBE=<5 ��Y ��� TPNg=<50 <br /> TPNg=<5D TPHd=<50 <br /> TPHg=1200 TPNd=<50 S=<05 <br /> TP8 <br /> d=270 1 8=<05 MTBE=<5 T@MW 7 <br /> LF <br /> 8=170 MTBF=c5 <br /> MTBE=c 5 <br /> vM,6 <br /> TPNg=<50 <br /> B=<05 <br /> SE� <br /> E <br /> MW Tge SealandContainer Storage Trailer <br /> x x x x <br /> TPHg=<50 <br /> LEGEND TPNd=<50 <br /> e=<D5 0 40 <br /> O GEOGON Groundwater Monitoring Well Location MTBE=<5 Maintenance& <br /> $ Alton Geoscience Groundwater Monitoring Wells Location <br /> Electricians <br /> Scale m Feet <br /> ® GEOGON Vapor Extraction Well Location BMW 11 <br /> UST Underground Storage Tank • • <br /> CONSULTANTS, INC <br /> Historical Groundwater Flow Direction 11375 SUNRISE PARK DR -SUITE 100 RANCHO OORDOVA rA 95742 -�! <br /> PHONE 916 852 9118-FAX 916852 9132 <br /> 1,000— — —TPHd Isoconcentration Contour(ugll) Stockton Yard Maintenance Station <br /> 1,000----TPHg Isoconcentration Contour(ugA) 1604 South B Street PETROLEUM <br /> San Joaquin County, California HYDROCARBONS <br /> TPNg = Total Petroleum Hydrocarbons as Gasoline(ug/1) IN CAROUNDWATER- <br /> TPHd = Total Petroleum Hydrocarbons as Diesel(ugn) GEOCON Prot No S8475-06-24D MARCH 2003 <br /> 8 = Benzene(ugl) <br /> MTBE = Methyl tert-burylether(ug)7) Task Order No 10-987901-MU April 2003 Figure 3 <br />