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Cattrans Construction <br /> i171visron <br /> x <br /> Office N <br /> x Office <br /> Trailer <br /> X TPNg= e 50 <br /> TPHd=53 <br /> MW 120 B= <05 <br /> MTBE <br /> 1 x <br /> Ix Chain Link Fence <br /> k TPNg=300 <br /> ' x TPHd= 710 TPHg=5D0 MW 9 <br /> c MT$E= 5 4 TPHd= i 10 0 <br /> x� B= 17 <br /> � Storage Warehouse <br /> � TPHg= <50 <br /> U O TPHd= <.50 <br /> MW 8 MW MTBE_ <05 <br /> rn <br /> x TPHg= 8200 TPHg= 17 ODO <br /> TPHd= 790 TPHd=570 <br /> LU B= 1900 8=4 200 <br /> u, MTBE=31 MTBE-43' TPHg- 1 700 <br /> oc TPHd-87 TPNg= 800 <br /> ' B=440 TPH = 770 <br /> Driveway OSB 2 MTBE=32 1 <br /> 8=48 <br /> $=4 8 <br /> VW 1 ESIflln3 <br /> MW-1 MTBE= i6 <br /> m VW-2 l <br /> Former Pump!stand <br /> x x �' O <br /> Mw 11 STOCKTON <br /> MW <br /> X 3 Building MW 6 YARD <br /> ' OSB 1 <br /> FACILITY <br /> TPHg= 1 900 TPHg=fi 800 <br /> TPHd= 160 x TPHd=560 <br /> 19 <br /> 00 <br /> B= 370 B= <br /> MTBE= 13 Approximate Location Former Pump island MTBE=366 <br /> of Underground Concrete BMW 2 { <br /> ' Fuel Tank Cavity TPHg=400 <br /> Driveway TPHd=200 <br /> 6=86 <br /> MTBE=8 0 <br /> LEGEND x� oMW 4 <br /> oMw s <br /> O MW-4 through MW-12, GEOCON <br /> Groundwater Monitoring Wells x <br /> -0 MW-1 through MW-3, Alton Geoscience X rPHd=ss D <br /> Groundwater Monitoring Wells, March 1992 B= 10 TPHg=<50 Maintenance Facility <br /> MTBE= <0 5 TPHd= 11 D <br /> o SB-1 and SB-2, Alton Geoscience i MTBE= <05 <br /> Soil Borings, March 1992 <br /> o SB-3, GEOCON Soil Boring Ix <br /> 4 <br /> VW-1 &VW-2, GEOCON Vapor Extraction Wells x �MW 16 <br /> T•11 Former 10,000 Gallon Unleaded Gasoline UST <br /> T.2 Former 5,OOOGallon Diesel Fuel UST 1 ENVIRONMENTAL CONSULTANTSINCORPORA7ED J <br /> I TPHg= <50 3235 SUNRISE BLVD -SUITE 6-RANCHO CORDOVA CALIFORNIA 95742 / <br /> x TPHd= 68 PHONE 916 852 9116-FAX 916 852 9132 <br /> TPHg = Total Petroleum Hydrocarbons as Gasoline I 8= i 0 <br /> MTBE <05 Maintenance Station Groundwater Monitoring Project <br /> TPHd = Total Petroleum Hydrocarbons as Diesel <br /> 8 = Benzene Caltrans District 10 Stockton Yore! Faeil�ty <br /> MTBE = Methyl-tert-butyl-ether Stockton, California Maintenance Station <br /> All Concentrations in Micrograms per Liter(ppb) 0 44 CONCENTRATIONS OF <br /> PETROLUEM HYDROCARBONS <br /> MTBE= 14 when analyzed by EPA Test Method 8260 Approx S; <br />