2010-02-02_REVISION - M1996052 - Laserfiche WebLink

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¦ Has there been any aquifer drawdown modeling done for this site? ¦ How will water that is currently captured by the "Seep Ditch" be returned when this ditch is removed? Or will irrigation of these areas cease prior to removing the ditch? • Submit a brief statement or plan showing how water from dewatering operations or from runoff from disturbed areas, piled material and operating surfaces will be managed to protect against pollution of either surface or groundwater (and, where applicable, control pollution in a manner that is consistent with water quality discharge permits), both during and after the operation. • The Division has noted the commitment to obtain a new SWSP from the State Engineer before additional water is exposed at this site. • You must provide an estimate of the project water requirements including flow rates and annual volumes for the development, mining and reclamation phases of the project. • You must indicate the projected amount from each of the sources of water to supply the project water requirements for the mining operation and reclamation. EXHIBIT H - Wildlife Information (Rule 6.4.8): Adequate as submitted. EXHIBIT I - Soils Information (Rule 6.4.9): Adequate as submitted. EXHIBIT J - Vegetation Information (Rule 6.4.10): Adequate as submitted. EXHIBIT K - Climate (Rule 6.4.11): Adequate as submitted. EXHIBIT L - Reclamation Costs (Rule 6.4.12): The reclamation estimate provided in this application is much better than most, however, all information necessary to calculate the costs of reclamation must be submitted and broken down into the various major phases of reclamation. If direct quotes are used for items such as seeding, please provide copies, so that they can be verified and included in the site file. You must provide sufficient information to calculate the cost of reclamation that would be incurred by the state. Please also provide cost estimates for the following items: • Pumping costs (State pumping cost is estimated at $300 per acre foot) • Dewatering costs (per appropriate unit time such as day, week, month) • Removal of structures included in mining plan such as sales office, scale/scale house, conveyor system, and asphalt and concrete plants • Weed Control Plan In addition to the above costs, the following text is taken from the Division of Water Resources General Guidelines for Substitute Water Supply Plans for Sand and Gravel Pits. "If the proposed final reclamation of the mining operation, as approved in the DRMS permit, does not include backfilling or lining to eliminate all ground water exposed within the mining boundaries, sufficient replacement water must be dedicated to the plan to cover the expected depletions that would occur at the site. The expected depletions must include evaporation from the surface area and the effects of the first fill that would occur if dewatering operations at the site ceased and the ponds were allowed to fill. At least three years prior to completion of dewatering, the applicant must submit a plan that specifies how the post-dewatering depletions, including refilling of the pit, will be replaced, in time, place and amount. If the final reclamation does not include backfilling or lining, and the applicant has not dedicated permanent replacement water to the plan, the applicant can still provide sufficient bonding (through the Division of Reclamation Mining and Safety) to cover lining or backfilling until such time as a court- approved augmentation plan is obtained or until all depletions at the site have ceased and all delayed depletions have been replaced. In the event that the operator of the pit walks away from the site prior to final approval of an augmentation plan or prior to replacement of all delayed depletions, the dedicated