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LEGEND <br /> B-1 ■ SOIL BORING LOCATION B-1-GW SAMPLE ID <br /> S-1 m SURFACE SAMPLE LOCATION 8-13 SCREEN INTERVAL-DEPTH IN FEET <br /> El BUILDING DRIPLINE SOIL SAMPLE LOCATION AT WHICH TEMPORARY CASING <br /> APPROXIMATE PROPERTY BOUNDARY 0.096 WAS SCREENED <br /> T❑ TRANSFORMER ARSENIC CONCENTRATION IN <br /> MILLIGRAMS PER LITER(mg/L) <br /> FARMLAND <br /> HOWARD ROAD <br /> 1 KINDERGARTEN <br /> B-2-GW HOST. B-1-GW <br /> I S-2 PORTABLE <br /> 1 7-12 KINDERGARTEN 8-13 B-1 I <br /> I B-2 HARDCOURT <br /> 0.042 El 0.096 <br /> GRAVEL 1 <br /> El BLDG 2 o PARKING ACCESS I <br /> I n R ❑S-3 m CLO O O I <br /> I KITCHEN <br /> RESTROOMS BLDG 1 1 <br /> I <br /> GRASS ❑ <br /> U' <br /> CAFETERIA/ C <br /> 1 FIELD AUDITORIUM <br /> I HARDCOURT BLDG 4 O 1 <br /> I <br /> CLASSROOM -- I <br /> 1 O O T❑ <br /> I El P1 <br /> CORPS OF P2 1 <br /> ENGINEERS I <br /> MATERIALS TANKS P3 SEPTIC \r <br /> YARD I V 1 <br /> 1 STORAGE ❑ WELLS I FARMLAND <br /> IB-3-GW B4-GW 1 <br /> 1 <br /> 15-20 19-24 S-8 I <br /> I <br /> B-4 <br /> 0.025 0.74 <br /> 1 <br /> 1 B-3 S-4 I <br /> I GRASS GARDEN <br /> FIELD 1 <br /> 1 S-6 m <br /> I 1 <br /> 1 I <br /> I I <br /> S-5 I1 m S-7 m <br /> L- - - - - - - - - - - <br /> figure 6 <br /> ARSENIC IN GROUNDWATER CONCENTRATION MAP <br /> 0 50 100ft APRIL 30, 2015 <br /> DELTA ISLAND SCHOOL <br /> 11022 W. HOWARD ROAD <br /> SOURCE: CAS CHAVEZ SURVEY REPORT DATED III(NA.COORDINATES Stockton, California <br /> BASED ON CA STATE COORDINATE SYSTEM,ZONE III(NAD83).BENCHMARK <br /> ELEVATION=4.30 FEET(NAVD 88). <br /> 080238-02(PRES001)GN-S0006 MAY 13/2015 <br />