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W W RESOURCE <br /> HYDROGEOLOGIC <br /> V SERVICES <br /> Figure 3.MW-15 design schematic. <br /> GCC Pueblo Plant Colluviurn/Overburden Monitoring Well Design <br /> Well Protector-4"X 5' steel locking—3'Stick-up concreted in-place,well ID welded to top or side <br /> Well Plug- <br /> 2"standard Guard Posts(4)- <br /> compression 4"X 6' steel pipe <br /> concreted In-place <br /> 3'Stick-up <br /> Concrete <br /> Well Pad— <br /> 3'X 3'X 4" <br /> rx <br /> Ground Su rface <br /> Concrete to <br /> approximately 1'depth <br /> (to top of bentonite) <br /> Bentonite Seal -1/4" or <br /> 3/8"coated bentonite <br /> Casing-2"SCH 40 PVC <br /> pellets Min 3' <br /> Flush-joint Threaded thickness above filter <br /> pack,hydrated at time <br /> of installation <br /> Borehole-min <br /> 6-3/8"diameter <br /> Filter Pack 20-40 silica <br /> sand base of screen to <br /> 1-2' above top of <br /> Screen-2"SCH 40 PVC <br /> screen <br /> flush-joint threaded <br /> 0.010" slot <br /> Centralizers-SS bow spring <br /> type installed bottom&top <br /> screen,min(2) <br /> NOT TO SCALE End Cap-2"SCH 40 PVC <br /> flush-joint threaded <br /> GCC Rio GRANDE,INC.PUEBLO PLANT <br /> 2021 MONITORING WELL INSTALLATION PROGRAM WORK PLAN <br /> 15 <br />