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.'N <br />ire-: <br />DAUB & ASSOCIATES, INC. <br />May 6, 2015 <br />gyp; Division of Reclamation, Mining and Safety <br />Attn: Minerals Division <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />1985'/2 SOUTH BROADWAY <br />GRAND JUNCTION, CO 81507 -9649 <br />(970) 254 -1224 <br />FAX (970) 242 -8438 <br />email: gjdaub @daubandassociates.com <br />www.daubandassociates.com <br />RECEIVED <br />DNISION OF RECLAMA110N <br />MINING AND SAFETY <br />Re: Response to DRMS' Nahcolite Project, Permit M-1983-194 Notice of Receipt, <br />Technical Revision TR-36, Completeness Notification acid Request for <br />Reclamation Cost Estimate. <br />This Natural Soda LLC (NS) submission is in response to a DRMS request for information <br />regarding TR -36, regarding the proposed plant expansion and a request for reclamation cost <br />estimate. The DRMS request for additional information was contained within the DRMS <br />Review of TR -36 application, dated April 7, 2015 and signed by Mr. Travis Marshall of the <br />Grand Junction DRMS office. NS' response follows: <br />1) Please provide a reclamation cost estimate for the proposed structures and <br />increased disturbance. <br />NS estimates direct reclamation costs for the proposed plant expansion and increased <br />disturbance to total approximately $1.1 million. <br />2) Please provide the approximate volumes of the proposed buildings. <br />NS has slightly modified the configuration of the proposed buildings for the mine plant <br />expansion that was submitted to the DRMS on March 25, 2015. This new configuration <br />better utilizes existing disturbance and maintains the previous proposed building <br />footprint of approximately 90,000 square feet. Please refer to the enclosed Conceptual <br />Processing 500K TPY Plant Detail Map (CONFIDENTIAL) for additional details. <br />a. Process building #1: 165'(L) x 79'(W) x 60'(H) = 782,100 ft3 <br />b. Process building #2: 105'x 36'x 170' = 642,600 ft3 <br />cn _ ui:v ,� .0 <br />✓iy �ir�tiw: iy, c.: a y.. . v i x ,;�:: UJU' iL <br />d. Packaging and warehouse building: 70'x 65'x 60' = 273,000 ft3 <br />e. Warehouse building: 400'x 150'x 22'= 1,320,000 ft3 <br />Please refer to the attached Conceptual Processing 500K TPY Plant Detail Map for <br />additional details. <br />3) Please provide the type of foundations and building materials that are proposed for <br />the structures. <br />The buildings will be built on structurally engineered concrete foundations and will be <br />constructed using double -lined steel. <br />SPECIALIZING IN PROFESSIONAL GEOLOGICAL, ENVIRONMENTAL, HYDROLOGICAL, GEOTECHNICAL AND PERMITTING SERVICES <br />