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GMX-12 8/4/03 27.5 41.5 48.5 GMX-10 8/5/03 8.0 47.5 TPHg <1 72 <1 TPHg <1 <1 TPHc <50 15,000 <50 TPHc <50 <50 Benzene <0.005 0.08 <0.005 Benzene <0.005 <0.005 Toluene <0.005 0.08 <0.005 Toluene <0.005 <0.005 Western Farm Ethylbenzene <0.005 <0.02 <0.005 II Xylenes <0.005 0.78 <0.005 Private Residence Ethylbenzene <0.005 <0.005 Service Y Xylenes <0.005 <0.005 (office) Acenaphthene <0.005 0.34 <0.005 PAHs <0.005 <0.005 Chyrsene <0.005 0.28 <0.005 % *WFSMW-1 Fluorene <0.005 1.2 <0.005 Phenanthrene <0.005 2.0 <0.005 GMX-7 Former Gasoline Pyrene <0.005 0.21 <0.005 • GMx-s• Station GMx-10 GMX-11 8/4/03 27.5 46.5 TPHg <1 <1 TPHc <50 <50 a Hi way 33 Benzene <0.005 <0.005 Toluene <0.005 <0.005 Ethylbenzene <0.005 <0.005 M ' 1 Xylenes <0.005 <0.005 PAHs <0.005 <0.005 F mer OVP B -2 B H -4 H-3 Undeveloped - - - - - - - - - - - - - - _- - - - - CPT2- - - - - - GMX-2% ® MW-3 • M S 1 3p GMX-4 ICP -1 S -6 M -1 \ i - - - - - GMX-1 B Former drain Buildings pipe location \ I Asphalt Parking \ Percolation OGMx-s Pond Unpaved ,\ 100,000 gal MW-4e \ water-AST ¢W_1 Asphalt Parking O �Pump GMX-5 '\ House • Drainage Ditch \ EXPLANATION a GMX-10� APPROXIMATE LOCATION OF SOIL BORING ADVANCED . - . . - . PROPERTY BOUNDARY a BY GEOMATRIX (8/03) UNION PACIFIC RAILROAD PRODUCTION WELL (LOCATION ESTIMATED BASED ON FIGURE 1 AS PRESENTED IN ERM, 1995a) ESTIMATED EXTENT OF PETROLEUM HYDROCARBON-AFFECTED SOIL, BASED ON GMX-8A APPROXIMATE LOCATION OF SOIL BORING ADVANCED CONCENTRATION OF TOTAL PETROLEUM 0 BY GEOMATRIX (5/20 - 21/02) HYDROCARBONS QUANTIFIED AS GASOLINE, DIESEL, MOTOR OIL, OR CRUDE IN SOIL EXCEEDING CPT-1 O CPT LOCATION ADVANCED BY RADIAN (2/27/97) 100 milligrams per kilogram, OR FIELD OBSERVATIONS MHB-3 INDICATING THE PRESENCE OF PETROLEUM 0 100 y o ♦ APPROXIMATE LOCATION OF SOIL BORING HYDROCARBONS (I.E., STAINING AND ODOR). o ADVANCED BY ERM-WEST,INC. (5/9/95) SAMPLE ID SCALE IN FEET SAMPLE DATE o APPROXIMATE LOCATION OF SOIL BORING L ADVANCED BY GTI (9/30/96) GMX-10 8/5/03 8.0 47.5 -SAMPLE DEPTH (ft bgs) t ABBREVIATIONS B-1 TPHg <1 <1 SOIL BORING LOCATIONS AND M<% ® APPROXIMATE LOCATION OF SOIL BORING TPHc <50 <50 N Z o a ADVANCED BY RADIAN (7/15/98) Benzene <0.005 <0.005 TPHg = Total petroleum hydrocarbons quantified ANALYTICIAL RESULTS (AUGUST 2003) o MW-4 Toluene <0.005 <0.005 ANALYTICAL RESULTS as gasoline 35275 Welty Road s APPROXIMATE LOCATION OF MONITORING WELL Ethylbenzene <0.005 <0.005 TPHc = Total petroleum hydrocarbons quantified Xylenes <0.005 <0.005 as crude Vernalis, California WFSMW-1 PAHs <0.005 <0.005 PAHs = Polynuclear aromatic hydrocarbons WESTERN FARM SERVICE MONITORING WELL f (only y ) Project No. Figure l onl detected PAHs are shown o GMX-6 1 CONCENTRATION (mg/kg) mg/kg = milligrams per kilogram • APPROXIMATE LOCATION OF SOIL BORING CONSTITUENT GEOMATRIX 6447.001 4 ADVANCED BY GEOMATRIX (11/11/99)