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• RESOURCE <br /> t HYDROGEOLOGIC <br /> SERVICES <br /> Figure 2. MW-9, MW-10, MW-11,MW-12,MW-13,MW-14 design schematic. <br /> GCC Pueblo Plant Bedrock 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 <br /> Guard Posts(4)- <br /> compression 4"X 6' steel pipe <br /> concreted In-place <br /> —3'Stick-up <br /> Concrete <br /> Well Pad— <br /> TX3'X4" <br /> Ground Surface <br /> Annular Seal-3/8" — — — — Concrete to <br /> bentonite chips to 1' _—_ approximately 1'depth <br /> belowground surface, — — — — (to top of bentonite) <br /> hydrated at time of <br /> installation <br /> Bentonite Seal-1/4" or <br /> 3/8"coated bentonite <br /> Casing-2"SCH 40 PVC pellets—Min 2' <br /> Flush-joint Threaded thickness above filter <br /> pack,hydrated attime <br /> of installation <br /> Borehole- min <br /> 6-3/8"diameter <br /> Filter Pack 10-20 silica <br /> sand base of screen to <br /> 3' above top of screen <br /> Screen -2"SCH 40 PVC <br /> flush-joint threaded <br /> 0.020" slot <br /> Centralizers-SS bow spring <br /> —spaced every 20', min (4) <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 /> 14 <br />