2023-01-04_PERMIT FILE - M2022013 (2)

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Rage 119 6.4.5 EXHIBIT D—Extraction Plan north-west of the emsting Evans Ditch as it courses ;►Inds north of the Big Thompson River. Plant activities will require a wash plant and attending wash pond to recycle wash water and receive discharge silts and other reject fines from the washed product.Plant and trash Pond areas are identified on Exbibit C-2: Extraction Plan Map. The gash pond will function as recycling wash water and receiving basin for reject fines for the intended Plant/Processing activities. Since the basin functions in a closed system,it will not require devvatering. Once the dash pond is established, wet plant operations can be created and join any dry plant activities in progress. Dry Plant operations can be readily- established since water is not integral to their operations. Once established, wash pond water uill function as a closed system_ Settled materials from wash Ponds ttiill be utilized as product or for reclamation as desired. Plant equipment will include,but is not limited to, a crusher, screens, and conveyors, scale house and scale, and attending equipment. Resulting stockpiles of pit run and processed products may be temporarily stockpiled here with processed stockpiles, or combined as needed,until transposed to market- Division Second Adequacy Comment • More detail is needed regarding the con veyor. Please pro vide the size of the conveyor. Also, provide the dimensions of pads and other foundations that will be used for this structure and provide an estimate of the total volume of concrete that will be used. Related to this, Exhibit L will need to be updated to include the cost of dismantling the conveyor. • Please describe the measures to be taken to prevent material from overtopping the conveyor system and falling into the Big Thompson River. Ra for Materials Second Adequacy Response The First Adequacy response provided has been enhanced and added to revised Exhibit D as requested including additional discussion on how material originally placed by the river will be prevented from falling from the conveyor back into the river (p23, Footnote 9). 25) In the section Plant Site Development & Operations, text should be added regarding the control of prairie dogs. Will they be relocated? 321Page Correspondence to the Colorado Office of Mined Land Reclamation—Reply to Rob Zuber,EPS—Adequacy letters of 24 June and 5 August 2022; in the matter of the Two Rivers Sand,Gravel and Reservoir Project—M2022-013.