2018-12-18_PERMIT FILE - M2018060

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Jared Dains December 18, 2018 Page 4 of 5 static water levels and yield under pre-mining conditions. This information may be especially useful if there is reason to believe that the well may be impaired prior to mining within this proposed permit area. EXHIBIT L - Reclamation Costs (Rule 6.4.12): (1) All information necessary to calculate the costs of reclamation must be submitted and broken down into the various major phases of reclamation. You must provide sufficient information to calculate the cost of reclamation that would be incurred by the state. You will need to specify, at a minimum, how many acres will require topsoil replacement, cubic yards of topsoil to be moved,average haul distances from stockpile locations, etc. This assumes that the site was mined at no steeper than 3:1 working slopes and therefore backfilling to final slopes using excess overburden is not required. Pounds of PLS for each species of reclamation vegetation will need to be provided, along with any mulch (generally 2 tons/ac crimped straw), or other soil amendments to be used for revegetation. Mobilization/Demob for all required equipment. DRMS will require documentation to substantiate the estimate given for the installation of the slurry wall. This is usually provided as a copy of the R.F.P. which provides site specific conditions, and the bids provided to complete the work. DRMS may alternately utilize a cost of$546 per square foot for slurry wall installation based on the perimeter of the proposed wall and average depth to bedrock. DRMS will also include indirect costs of approximately 21% in the total required bond amount. EXHIBIT S - Permanent Man-Made Structures (Rule 6.4.19): Please note that roadways and above-ground or underground utilities (if present) within 200 feet of the proposed affected area are considered permanent man-made structures. In accordance with Rule 6.4.19, when mining operations will adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected area, the applicant may either: a.) Provide a notarized agreement between the applicant and the person(s) having an interest in the structure, that the applicant is to provide compensation for any damage to the structure; or b.) Where such an agreement cannot be reached, the applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation. Please provide evidence(certified letter to structure owners)that a notarized agreement between the structure owners and the applicant was pursued. If an agreement is unable to be reached a geotechnical assessment may be provided to demonstrate that the structures shall not be damaged.