Laserfiche WebLink
AA <br /> MineWater <br /> Division's Inactive Mine Program. The reclaimed area is described as old tailings covered <br /> with mulch and seeded with Zone 5 seed mix. The Applicant has committed to reseeding the <br /> site with the Zone 5 seed mix. However, the NOI Application did not address mulching <br /> requirements. Please specify the type of mulch to be used, the rate and the application <br /> method. The mulching specifications should match Inactive Mine Program's requirements. <br /> In accordance with similar reclamation projects in the area,we will incorporate two tons of <br /> certified weed-free straw mulch per acre to be distributed over the project area. The straw <br /> mulch will be hand distributed over the site and then anchored to the reclaimed surface after <br /> application of the seed mix using hand crimping tools to punch the straw a short depth into <br /> the surface to minimize loss of mulch through wind erosion. <br /> In discussions with Allen Sorenson/DRMS we have learned that the top 8" is essentially <br /> manufactured topsoil that was made by adding compost to mineral soil. Therefore, we will <br /> salvage and stockpile all the disturbed manufactured topsoil next to the drill pad, and amend <br /> this with additional compost at a rate of 30 CY per acre (per DRMS recommendation)during <br /> the process of spreading the topsoil stockpile back over the reclaimed area. <br /> 5. Please clarify if the tailings on which the drill pads will be constructed are acid generating <br /> and describe how the material will be handled in such a way as to prevent any unauthorized <br /> release of pollutants to the surface drainage system. <br /> The tailings are not acid generating. Sulfides were removed through flotation when these <br /> tailings were last processed in the 1940s and sulfides were taken off-site for further milling <br /> and leaching. At the downgradient edge of each disturbance area we will install wattles and <br /> silt fencing to prevent erosion during disturbance and during recovery of the area after <br /> reclamation. <br /> 6. The Applicant is proposing to construct up to four drill pads. Please provide a brief <br /> description on how the drill pads will be constructed. Will the drill pads be constructed on level <br /> areas? Will cut and fill be required to construct the drill pads? Also, specify the volume <br /> of material which will be moved during construction of the drill pads. <br /> The drill pads are on areas that are already generally level. The drill rig will level itself and <br /> will not require significant surface preparation. No more than one foot of cut to fill would be <br /> required to form a berm at the downgradient edge of the pad including topsoil salvage as <br /> suggested by the Inactive Mines Program, so the volume of disturbed material would not <br /> exceed 1600 cubic feet per pad, for a total of 240 CY of material moved for all 4 pads. <br /> 7. The recently reclaimed area where prospecting operations will be conducted is susceptible to <br /> erosion. Describe the Best Management Practices which will be used to control erosion. <br /> Before prospecting activities, a berm will be constructed at the down gradient edge of each <br /> drill pad area using cut to fill from the compost-amended mineral soil covering the tailings on <br /> the surface of the drill pad area. Silt fencing and wattles will be used to prevent erosion at the <br />