2024-06-07_PERMIT FILE - M2024026 (23)

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Exhibit D Page 24 ROM material will be trammed(via front-end loader)from the ROM stockpile to the integral feed hopper. Material will then be conveyed to wet scalping screens where material larger than(oversize)will be removed and conveyed to an oversize stockpile. Material smaller than(i.e.,passing the 'h"screen)will be placed into a slurry and pumped across additional screens.Material larger than 30 mesh(#30)will be removed by secondary screens and dewatered(to approximately 15%moisture content)and conveyed to the PDS.Material smaller than#30 will be further pumped through attrition cells and cyclones to produce a#30/140). This product will be dewatered and conveyed to the washed sand stockpile within the Wet Sand Storage Building. • Washed Sand Stockpile and Decant System Washed(interim)product from the wet plant will be delivered to Wet Sand Storage Building(an approximately 610 ft x 130 ft enclosed structure)via conveyors, and stockpiled inside the structure via overhead tripper conveyors. The Wet Sand Storage Building will have an anticipated maximum stockpile height of approximately 48-ft.,occupying a footprint area of approximately 568 ft x 120 ft., sufficient to accommodate an estimated 70,000 cubic yards of(interim)product for a limited-duration time period, during which residual moisture will be decanted from the material. The decant system will employ a perforated pipe underdrain system designed to drain to a common sump, from which recovered water will be pumped to the Wet Plant clarifier unit for clarification and subsequent re-use. • Drying and Screening Plant The drying and screening plant facilities will occupy an approximately 280 ft by 350 ft area within the central portion of the Plant Area. It will consist of an assemblage of permanently installed equipment,to include a rotary drying unit and various screening decks,all of which will be placed atop a concrete foundation. As depicted in Exhibit D-4: Process Flow Diagram,the post drain-down intermediate product will be routed to a drying plant,where it will be passed through gas-fired rotary dryer unit(s), after which all material will report to a 1/16"scalping screen to remove any foreign material from the product that may have been introduced during the transfer and/or drying processes. The reject will be collected(minor quantities)under individual scalping screens, until moved to either the PDS or a pit void area for disposition. Each gas fired rotary dryer will be equipped with a cyclone and bag house to remove fines material(particulate)from the air flow stream;this fines"reject"will be conveyed to a small"reject" stockpile,where it will remain until space constraints dictate removal to the process discard stockpile (PDS).The desired#30/140 end(saleable)product emanating from the gas-fired rotary dryer and scalping screen circuit will be conveyed to the Dry Sand Storage Building where tripper conveyors will again be utilized to stockpile the product. • Oversize(Reject)Stockpile The Dry Plant oversize stockpile will be situated proximal to the screening tower,which is to be located at the west end of the Dry Plant facilities.Oversize material(i.e.,that greater than 1/16")from the final screening process will be stockpiled via a radial stacking conveyor unit. It is anticipated that the oversize stockpile will, at maximum capacity, encompass an approximately 55-ft diameter footprint. It is Colorado Sand Company II, LLC Kersey Mine Construction Material Regular(112)Operation Reclamation Permit Application June 7,2024