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CONCRETE APRON TRAFFIC RATED WELL COVER <br /> WATER-TIGHT LOCKING CAP <br /> BLANK PVC WELL CASING (SCHEDULE 40) NEAT CEMENT (PORTLAND CEMENT) <br /> FROM SCREENED CASING TO 1/2 FOOT BSG FROM BENTONITE SEAL TO 1 FOOT BSG <br /> BENTONITE SEAL (PELLETS-PELL PLUG) <br /> TWO FEET ABOVE FILTER PACK <br /> =`r <br /> FILTER PACK (#3 SAND) <br /> 50-MICRON DIFFUSER SCREEN (SCHEDULE 40) ONE-FOOT ABOVE SCREEN <br /> 36-INCHES <br /> 1 <br /> SEALED <br /> ALL DEPTHS RELATIVE TO SURFACE GRADE <br /> B" BOREHOLE DIAMETER <br /> NOT TO SCALE <br /> PROPOSED OZONE SPARGE WELL DESIGN ® Advanced <br /> WEST CLAY PROPERTIES GeoEnvironmental, Inc. <br /> of Norther" Cs/itornir <br /> 639 WEST CLAY STREET PROJECT NO. AGE-NC-96-0235FILE: OZ SP FIGURE: <br /> STOCKTON, CALIFORNIA DATE: JANUARY 2005 DRAWN BY KMM 3 <br />