2023-02-02_PERMIT FILE - M2022013 (12)

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Specific Reclamation Elements and Methods: This application proxides substantial detail of features utilizing aerial photography that is ortho-rectified to approximately 1.0± percent of surveyed accuracy. This highly- accurate and detailed portrayal of planned extraction and reclamation is risible under Exhibit C-1: Existing Conditions, Exhibit C-2: Extraction Plan Map, and Exhibit F - Reclamation Map. How, reclamation will occur over affected lands is further detailed under Exhibit L - Reclamation Costs. As extraction progresses over the Fields south of the Big Thompson River, the resulting 1.25H:1V slopes (2H:1V, where indicated) created during extraction IN-ill be concurrently modified when and where practical. Concurrent reclamation is a natural incentive for Operations to speed site recovery while generally serving to lower attending financial warranty burdens. The cut slopes along the extraction limits perimeter xvill be finished graded by pushing the resulting pit bottom with a dozer until the resulting basin slopes conform with Rule 3.1.5(7). Since the primary end use is Developed Water Resources, the basins are intended to hold waters based upon the rights assigned by decree, or as stipulated in regulatory compliance with the Colorado Division of Water Resources, Office of the State Engineer (OSE). This may include the need to augment water sufficient to cover the anticipated exposed groundwaters of the basins in the unlined state. The entire unlined basin is or will be sufficiently covered under an approved substitute supple- plan. In order to again liberate waters set aside for augmentation, the basins vvL at some point in the if of the actiNzty be lined to segregate the basin from Colorado groundwaters. Alternatively, the Applicant may clarify that the post-mining land use of developed water resource will be achieved through clay lining the reservoirs. If the Applicant chooses to clay line the reservoirs, then the Applicant shall provide enough detail for the Division to calculate the cost to line the reservoirs. Raptor Materials First Adequacy Response The application will be revised to reflect choice of lined reservoirs for final reclamation. Details of reclamation to form lined reservoirs is contained in Exhibit E, pp 4-5, Specific Reclamation Elements and Methods. 351Page 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.