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L.G. Everist, Inc West Farm Reservoirs <br /> BANK ARMORING PLAN <br /> This bank protection plan is presented to explain the bank <br /> armoring proposed for reservoir bank protection in a 1305 foot <br /> section of Phase 1 where mining will be within 400 feet of the <br /> River and around the entire perimeter of Phase 2 . Only the <br /> reservoir side armoring is being proposed since the river bank <br /> will be 300 feet or more east of the top of the slope of the <br /> mining limits . The location of the proposed armoring is shown on <br /> MAP EXHIBIT F-RECLAMATION PLAN MAP. <br /> The attached FIGURE1shows the cross-section of the area discussed <br /> below and details of the armoring to protect the banks along the <br /> east side of Phase 1 and entirely around Phase 2 . <br /> The armor is intended to protect the reservoir banks should a <br /> 100-year flood event occur after an area has been reclaimed. The <br /> armoring will be covered with a 10-12 inch layer of growth medium <br /> and seeded with the approved seed mix. <br /> The toe of the slope armoring will be at least 5 feet below the <br /> thalweg of the adjacent riverbed. The base of the armoring will <br /> average 10 feet below the existing ground surface at the mine. <br /> The 100-year Floodplain line information has been included on all <br /> of the MAP EXHIBITS in the application Packet . <br /> Armoring material will be recycled concrete fragments with <br /> surface rebar removed, so that it meets the definition of Inert <br /> Materials . The concrete will be sized 9 to 15 inches averaging 12 <br /> inches . Fines will be mixed in to fill voids . This size material <br /> will have a Safety Factor of 1 .26. See Bank Armoring Calculation <br /> page following this text . <br /> The operator will keep enough material stored on the mine to <br /> complete armoring needed on any area where sloping is being <br /> completed and is ready for armoring. At a minimum, 2, 350 cubic <br /> yards will be stockpiled on the mine for use in armoring. This <br /> is enough to armor a minimum of 1, 000 feet of excavation bank. <br /> At no time will there be more than 1, 000 feet of armoring needing <br /> to be placed. <br /> The stockpile of armoring material will be placed parallel to the <br /> water flow so it will not interfere with flows in the flood plain <br /> if flooding occurs . It will be within the setback between the <br /> permit boundary and the mine highwall so it is close to the area <br /> where it will be placed on the bank. <br /> LGE-WEST FARMS RESERVOIR May 2023 <br /> 114 <br />