2018-08-31_GENERAL DOCUMENTS - M1977493

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2016 Reclamation Cost Estimate Update — Climax Mine 4 Cost Model Instructions This section describes the system of inputs required by this update to the Climax Mine reclamation cost model. 4.1 General Inputs The first six worksheets require direct input of the model's operating assumptions. The majority of the cells which require modification have been shaded in green or yellow. Items which change include, but is not limited to: • Indirect Cost percentage allocations for Insurances, Bonds, and Contractor Profits which are fixed DRMS Direct Cost percentages at 2.02%, 1.05%, and 10%, respectively. • The cost for a Job Superintendent has been calculated using the labor rates and assuming an onsite presence of 4y2 years. • The Consumer Price Index factor is a published value. • The Financial Warranty Fee of $500 is a rate fixed by DRMS. • The final two Indirect Cost categories for Engineering, Bidding, Contracts and Management, Administration have been set to 2% and 3%, respectively, of the total of Direct Costs, Overhead, and Profit, to be consistent with the DRMS-approved reclamation cost estimate for the Henderson site. • Equipment unit rates are obtained from Colorado Front Range rental companies (generally Caterpillar models) which are compared with current contractor rate sheets obtained from the Climax Mine GSC Department. • The sources of the update to the Materials List are referenced in the table. • Demolition unit rates are largely provided from the latest RS Means' Heavy Construction Cost Data book, in this case published in 2016. 4.2 Project Inputs On the Summary tab, the buttons at the top will automatically create new tabs or outputs, as follows: • Add a GENERAL worksheet: adds a new worksheet for reclamation of a facility or area. • Add a DEMOLITION worksheet: adds a new worksheet for demolition of a facility or building. • GO TO Last Active SHEET: returns the user to the previous active worksheet. • Create PDF copy: allows the user to select which tabs to print to an Adobe Acrobat file. On the individual project tabs, the buttons at the top of each sheet will automatically create activities and line items, as follows: • GO TO "SUMMARY" SHEET: returns the user to the Summary worksheet described above. • Insert a new task HAUL/LOAD: adds new cost line items for a loader -haul truck fleet combination. • Insert a new task SPREAD (CUYDS): adds a new cost line item for a motor grader (spreading of cover material). • Insert a new task GRADING (ACRES): adds a new cost line item for a motor grader (grading of haul routes). • Insert a new task WATER: adds a new cost line item for a water truck (dust control of haul routes). • Insert a new task MATERIALS: adds a new line item for materials only. • Add new equipment to look up: takes the user to the Equipment List tab to add a new piece of equipment. • Add new material to look up: takes the user to the Materials List tab to add a new material. At each of these prompts, green shaded cells typically indicate where user input is required. In some cases, a Production Table will automatically be created below the Calculations Table from which calculated data will be pulled back into the reclamation cost line item. However, the Production Table must be modified by the user with consideration for two production categories. First, Figure 1 should be consulted (in AutoCAD format) in order to calculate haulage distances and average road grades, if required. This data should then be taken into consideration for the calculation of haul times between the November 2016 (revised August 2018)