2015-02-05_PERMIT FILE - M2015003

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EXHIBIT G — Water Information SUMMARY: This operation is expected to neither directly nor indirectly affect surface and ground water systems. No irrigated land will be taken out of production; separate request will be made to use some irrigation water for dust control, washing of aggregate, and related uses during mining, primarily by using water purchased from water rights holders under a temporary water supply plan. The mining and reclamation as planned has no reasonable potential to significantly and adversely impact on surface or groundwater quality or quantity. Reclamation may leave small basins for infiltration and evaporation of runoff; if water is available and excavation to water table is done in mining, some small ponds may be left as features of final reclamation. G -1. SURFACE WATER MANAGEMENT: WATER AND DRAINAGE: Since mining will be executed as sidehill cuts and will slope down into the hillside, including the ridge of 200 feet width between the mining and the Harris Ditch, runoff which has come in contact with exposed bare soil or raw materials will be contained as much as possible to infiltrate, rather than discharge overland or in outfalls. Infiltration areas to allow water to soak into the ground will be maintained at the toe of the face of the pit, and will allow dewatering if necessary, to prevent illicit retention of water, and with permitted discharge to the river if required (as permitted by storm water permit). The plant site 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 or sediment/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 regulations3 and permits to ensure that no sediment from the pit is discharged into the San Juan River. The pit floor and plant site floors are intended to be below the surrounding land and there will be no discharge under normal conditions from these areas during mining and plant operations /materials storage. A berm will be left on the river side of those areas to be mined on the west edge of the mining area, both for storm water control and for safety. Since discharge is to be avoided as much as possible, and only after water has accumulated for a length of time, it is not expected that discharge temperature regulation may be required. The San Juan River is a rated Cold- water fishery above Navajo Lake. No dewatering is anticipated, as ground flow through undisturbed mineable material on the west side 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. Water used for washing of material and dust control will not be discharged, but will be recirculated /recycled as much as possible, and otherwise allowed to infiltrate into the ground. 3 This is described in the surface water management plan, prepared for the CDPS (CDPHE -WQCD) permit, which provides detailed information. C &J Gravel Products, Inc. Page 29 01 JAN 2015 Application for Permit: Two Rivers Pit M -2015- C &J- TRP -V5 -001