2008-02-27_PERMIT FILE - M2008010

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Mud Creek Pit -Reclamation Permit Application - 112 (C) Exhibits Page 16 of 67 loaded directly from ouffeed conveyor stockpiles to haul off-site or to Plant Sites A and B. These sites will have aggregate stockpiles for production of ready-mix and asphaltic cement concrete only immediately before and when plants are present and operating. Material stockpiles will not be placed directly on un- stripped/undisturbed land. GENERAL: Stockpile areas are placed where the material will be available for reclamation as planned with minimum movement and re-handling. There may be some very temporary stockpiles for topsoil and excess material, located at various convenient locations along roads, on the floor of the pit, in the plant area, or in stripped areas. The use ofsilt-fencing at the toe of stockpiles will be avoided as much as possible, but sediment control may be provided by shallow swales at the toe. TABLE D-8-4. LONGTERM SOIL STOCKPILE AREAS # Area Volume Tyke Period of use Period of Use of material acres ~ material removal A-1 0.28 10,000 Topsoil Permanent Only as sold Berms for plant site and sale until used material B-1 0.67 16,100 Topsoil Permanent Not planned Berms for plant site and sale until used material Tot 0.95 26,100 See Figure D-2 for locations of stockpiles A-1 and B-1. SECTION D-9. SURFACE WATER MANAGEMENT: WATER AND DRAINAGE: during each phase, the working face will move to the North-Northeast. In Phase II, the pit will daylight along the northern permit boundary, but will be cut deeply enough to prevent runoff from the pit across the boundary to the adjacent property3. Years 1-4 areas will flow to the Southwest and Plant Site A. Years 5-8 areas' flow will split: some will flow to the west and Plant Site B, the rest to the east and a detention and sedimentation basin in the Northeast corner of Year 8. Year 9 will have its own internal flow to the West and a small infiltration/ sedimentation basin. Years 10-20 will flow to the Southwest and Plant Site A. Both plant sites will have detention/sediment basins. Drainage through reclaimed areas will be a permanent part of final reclamation. Temporary structures (swales and berms) will be constructed on the floor of the pit and in stripped areas to (1) prevent erosion, (2) divert water from active mining areas and (3) convey water to reclamation and long-term stockpile areas, or to a discharge point orsediment/infiltration basin. The goal is to prevent any surface discharge of water from disturbed areas which have not been reclaimed. The drainage from the active areas will be controlled and treated as required by water quality regulations4 and permits to ensure that no sediment from the pit is discharged into Mud Creek. The pit floor and plant site floors are below the surrounding land and there will be no discharge under normal conditions from these areas during mining. Mud Creek is not a rated fishery, so it is not expected that discharge temperature regulation may be required. No dewatering is anticipated, as ground flow through undisturbed mineable material on the sides of the pit will continue. Prevention or significant limits on surface discharge will minimize erosion, sedimentation, and traffic problems. As necessary, stockpiles may have perimeter ditches/swales and berms with silt fence, straw bales, or rock check dams, to reduce/prevent sediment in any runoff, and reduce soil loss. 3 Except under controlled conditions. 4 This is described in the surface water management plan prepared for the CDPS permit, which provides detailed information. McStone Aggregates, LLC 15 FEB 2008 ©WASTELINE, INC 2008 PN 5006.1-4(009)