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['age 3 of 6 <br />used along with a narrative to present the following information: <br />(i) The Operator states the deposit to be mined is approximately 40 feet thick, with approximately 1 -2 <br />feet of overburden. This means the maximum depth of mining could be 42 feet. The Operator also <br />states that mining could potentially go deeper than 40 feet to extract material. Please indicate the <br />estimated maximum depth of mining (since it appears that this number is greater than 40 feet). <br />The Operator states that a highwall will be created that is up to 40 feet in height and 1,100 feet in <br />length, with a slope of approximately IH.•1 V. The Operator should be aware that the required <br />Financial Warranty will need to include costs for backfilling this highwall to a 4H.•1 V slope (as <br />indicated in the proposed reclamation plait submitted). According to the dimensions you provided, <br />backfilling will require approximately 97,778 CY offill material to get to a 4H.-1 V slope. If there <br />was a minimum setback of 80 feet from the highwall and the permit boundary, it is possible that the <br />cut and fill method could be used instead, which would require approximately 24,444 CYoffill <br />material. However, the maps submitted show the highwall in very close proximity to the permit <br />boundary. Therefore, unless the mining area will be kept a minimum of 80 feet from the permit <br />boundary, the Division's bond calculation will need to include costs for backfilling rather than the <br />cut and fill method. <br />(ii) Adequate as submitted <br />(g) Adequate as submitted <br />(h) Adequate as submitted <br />(i) Adequate as submitted <br />EXHIBIT E - Reclamation Plan (Rule 6.4.5): <br />1) Adequate as submitted <br />2) The Reclamation Plan shall include provisions for, or satisfactory explanation of, all general <br />requirements for the type of reclamation proposed to be implemented by the Applicant. Reclamation <br />shall be required on all the affected land. The Reclamation Plan shall include: <br />(a) The Operator states that overburden will be extracted and placed on the perimeter northwest <br />boundary in a berm /stockpile up to 4 -5 feet in height. However, in the mining plan submitted <br />[6.4.469], the Operator states that overburden will be stockpiled on the eastern end of the affected <br />area. On the mining plan map submitted, the location of overburden stockpile(s) is not indicated. <br />Please correct /explain this discrepancy in the text submitted, indicating where the overburden will <br />be stored during the operation. This information is needed for the bond calculation. <br />(b) Adequate as submitted <br />(c) Adequate as submitted <br />(d) Please state what vegetative cover (e.g., grass species, seeding rate) will be used to stabilize <br />topsoil stockpiles that sit for more than a growing season. <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http: / /mining.state.co.us •6? #� <br />John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director* <br />rs7s <br />