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Job No: 360100-004-04 Client: LRM Page 1 of 26 <br /> TELESTOTask: Recl'n Cost Estimate Computed By:D. Bauer Date: 9/7/17 <br /> S O L U T I O N S• r4 C n R P n R A t E D <br /> DRAFT-For DRMS Review Checked By: W. Niccoli Date: 12/30/17 <br /> Calculation Documentation <br /> Problem Statement: <br /> Loveland Ready-Mix Concrete's (LRM's) proposed Knox Pit and associated concrete batch plant plan <br /> (i.e., LRM LaPorte Operations) presented to the Colorado Division of Reclamation Mining and Safety <br /> (DRMS) includes five phases with concurrent mining, material processing, backfill and reclamation of <br /> the mine pits. Prior to the operation being permitted by DRMS, the information required to estimate <br /> the reclamation costs associated with the different phases is required. Not all mining phases will be <br /> active at once, and reclamation of early phases is planned to be complete before commencement of <br /> activities at later phases. <br /> Objectives: <br /> 1. Summarize quantities necessary for reclaiming the Knox Pit and associated operations <br /> throughout anticipated mine life <br /> 2. Document the process for determining reclamation costs for the proposed Knox pit, LaPorte, <br /> Colorado <br /> 3. Provide reclamation cost estimates for the various phases of mine life <br /> Approach: <br /> 1. Utilize current mine plan to: <br /> a. Gather material quantities and distances for earth work, including 6 inches of topsoil <br /> b. Estimate pipe lengths for perimeter drain <br /> c. Estimate concrete foundation quatities to be broken up <br /> 2. Utilize a reclamation cost-estimating spreadsheet <br /> a. Use tabs to summarize and quantify hours and unit cost rates for heavy construction <br /> equipment, labor, fuel, and materials to be used for the reclamation work <br /> b. Construction equipment ownership and operating costs and labor rates drawn from <br /> industry standard, publically available sources <br /> c. Utilize Caterpillar handbook estimating techniques <br />