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Exhibit D <br /> Page 17 <br /> Year 10: The Year 10 mining activity is largely carried out within the southeastern quadrant of Section 12, <br /> with pit advance being curtailed(late in the year)near the extreme southern boundary of the section due to <br /> a current lack of geological data. Unmined areas further to the south,and extending through Section 14, <br /> encompass what CSC has termed"TMDZ-1",or Temporary Mining Deferral Zone 1 (refer to Exhibit D- <br /> 2: Mine Plan).CSC retains the right to incorporate all or part of TMDZ-1 into the LOM plan once <br /> additional geological data is available. It is anticipated that the latter portion of the Year 10's production <br /> will be derived from a new box cut as pit operations are shifted to the southwest mining area, with the box <br /> cut entering the area at a location near the northeast corner of Section 10. Planned production over the <br /> projected 126-acre mine block is set at approximately 5.1 million tons for the year. The full extent <br /> (approximately 203,000 cubic yards)of pre-strip growth medium is slated for use in concurrent <br /> reclamation, in addition to approximately 5,000 cubic yards to be taken from TS-1,further reducing the <br /> cumulative total of TS-1 stored material to approximately 583,000 cubic yards. Some 880,000 cubic yards <br /> of process discard are projected to be placed in the PDS,bringing the total volume in the PDS to <br /> approximately 8.8 million cubic yards. <br /> Note: At the end of Year 10,CSC has estimated total disturbance to be on the order of 988 acres,of <br /> which 651 acres will have been subject to concurrent reclamation(and as such,the 651 acres would be in <br /> the post-reclamation monitoring and maintenance phase),thus leaving approximately 336 acres that would <br /> be classified as yet-to-be reclaimed. In addition, it is projected that some 182 acres of previously <br /> reclaimed disturbance will have successfully completed the 5-year duration post-reclamation monitoring <br /> and maintenance period and would potentially be subject to partial bond release. <br /> • Years 11-20(Southward Progression Through Section 10 and North Portion of Section 15) <br /> As indicated above,it is projected that the latter portion of Year 10 will be dedicated toward opening a <br /> new box cut in the northeast corner of Section 10,thus facilitating transfer of mining operations over to <br /> the southwest portion of the Permit Area,with a planned continuation of mining within that portion <br /> through the remaining 10 years of mine life. It is anticipated that such will be accomplished in general <br /> accordance with the following described progression. <br /> Year 11: The Year 11 mining activity encompasses a continued southerly advance from the Year 10 mine <br /> block, followed by a reconfiguration of the pit to facilitate a westerly advance across the central portion of <br /> the northern one-quarter of Section 10.Planned production over the projected 86.2-acre mine block is set <br /> at approximately 5.1 million tons for the year. The full extent(approximately 177,000 cubic yards)of pre- <br /> strip growth medium is slated for use in concurrent reclamation,in addition to approximately 39,000 cubic <br /> yards to be taken from TS-1,further reducing the cumulative total of TS-1 stored material to <br /> approximately 544,000 cubic yards. Some 880,000 cubic yards of process discard are projected to be <br /> placed in the PDS,bringing the total volume in the PDS to approximately 9.7 million cubic yards. <br /> It is anticipated that the Kersey Mine's maximum area of disturbance will occur during Year 11, at which <br /> time a total of 988 acres of disturbance remaining in a"non-reclaimed"status. <br /> Year 12: The Year 12 mining activity is anticipated to continue the westerly advance to near the western <br /> edge of the Permit Area,then turning south and developing a full pit length face across the mining area, <br /> while mining out the northernmost one-third of Section 10 in doing so. Planned production over the <br /> projected 76.8-acre mine block is set at approximately 5.1 million tons for the year. The full extent <br /> Colorado Sand Company II, LLC <br /> Kersey Mine Construction Material Regular(112)Operation Reclamation Permit Application <br /> June 7,2024 <br />