Laserfiche WebLink
COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />April 23, 2015 <br />To: Brock Bowles <br />From: Jason Musick <br />RE: New Horizon North Mine, C- 2010 -089 <br />TR -8, Adequacy Review Memo <br />Per your request, I have reviewed the Tri -State responses associated with the Division's adequacy review <br />received April 2, 2015. Based on the responses, Tri -State has revised the SEDCAD model associated with <br />the West Haul Road Drainage ditch. The original submittal was modeled on section 3 +00 of the haul road <br />cross section and based on the Division's adequacy comments # 2 and #3 the model was revised to utilize <br />the smallest cross section of the ditch (section 8 +00). The design discharge changed based on the revised <br />model; however, based on the as -built design presented on Map 2.05.3(3) -4 the road side ditch is <br />adequate to convey the flow designed. The Division has no additional comments associated with the <br />submitted responses. <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http: / /mining.state.co.us <br />John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director <br />OF'c <br />\876. <br />