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Colorado Crushing, Inc. <br /> Perrino Pit - Technical Revision <br /> M-2017-007 <br /> This Technical Revision is to change the primary entrance from the northeast to the southwest, <br /> change the disturbance area allowed at one time from 20.0 acres to 35.0 acres,and reevaluate <br /> the Financial Warranty for this increased disturbance. <br /> Primary Entrance relocation <br /> In the original permit application the proposed entrance was original where the landowners private <br /> drive enters the mine property in the south east corner of the permit area. This was changed to <br /> the northeast corner during adequacy because it is unclear if that road could be used. During the <br /> County permitting process the Commissioner made that the original entrance on to CR 614.1. A <br /> copy of the County resolution is attached showing that conditions of approval. The existing <br /> entrance will still be used as a secondary entrance to serve customers in that direction. A Revised <br /> Exhibit B - Vicinity Map is attached showing the revised entrance location. <br /> Mining Plan Change (increase disturbance) <br /> Attached is a revised Exhibit D changing the discussion on the primary access point, the increase <br /> to the allowed disturbance and increase slope reclamation distances. Only the paragraphs that <br /> are affected by these revisions have been changed as appropriate. A full copy of Exhibit 0- <br /> Mining Plan is provided for the record with the pages dated to note the changes made. A redline <br /> copy of the changed areas is provided for your review. A distinction is made to remove the <br /> maximum disturbance allowed and call it the maximum bonded disturbance. This is done so in the <br /> future if more area is needed only a Financial Warranty reevaluation will be needed. <br /> Financial Warranty <br /> This evaluation serves 2 purposes. The first is to determine if the current warranty is adequate <br /> to cover the amount of reclamation activities need at the facility at this time and to evaluate it <br /> for allowing an increase to 35 acres of bonded disturbance. <br /> The current bond ($86,000.00) is adequacy to cover the current amount of reclamation work <br /> needed at the mine at this time. That bond is based on there be a large amount of backfilling <br /> along the exterior slope, an assumption that the mine would be 45 feet deep and the volume <br /> needed to complete the active mining area slopes is much greater then the current conditions <br /> when the mine is an average of 25 feet deep not 45 ft. <br /> Exhibit L - Reclamation Costs was revised based on having 35 acres bonded, this is a 15 acres <br /> increase but due to the actual conditions at the mine and the current method of operations the <br /> bond works out to be less then originally calculated. The copy of the revised Exhibit L explains <br /> how we have arrived at this decision. The final estimated number was rounded to the closest <br /> $100. <br /> August 12, 2021 2 <br />