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Discharge Plans <br /> Superficially, the very best approach to dealing with the water would be to pump it out of <br /> the pond into a water truck, haul it all the way up to the higher reaches of the quarry, and dump it <br /> on a fairly level surface, letting it soak into the rock that will be mined later. This is the Infiltration <br /> approach which complies with the methods stated in C.R.S. 37-92-602. <br /> Unfortunately, doing that could potentially have severe consequences. The granite being <br /> mined is structured in huge, irregularly shaped blocks with variable compositions. These blocks <br /> were formed when Pikes Peak was shifted eastward during the formation of the Rocky Mountains. <br /> The granite was broken up into irregular blocks that broke and splintered with joints and small <br /> faults separating them. These cracks are potential slippage zones if adjacent rock erodes away(or <br /> is mined)so adjacent masses that previously held everything together no longer provide sufficient <br /> support. It is not known where all of these joints and faults occur. But intentionally letting hauled <br /> in water from the sediment pond soak into these areas could"lubricate"these zones so, during the <br /> mining, movement could occur. There is already some water in these zones as evidenced by water <br /> in holes drilled for blasting and also little springs and seeps in deep drainages between ridgelines. <br /> So, dumping a lot of water on the top of areas to be mined could create a hazardous instability in <br /> the future. Therefore,this approach, although a good way of disposing of the water, may result in <br /> undesirable and potentially dangerous conditions in the future. The best approach becomes <br /> disposing of the water right back into Turkey Creek. Two methods described below will be used. <br /> Both methods involve filtering the water before it enters Turkey Creek <br /> METHOD 1: This approach discharges water directly from the pond into Turkey Creek using a <br /> pump and filter approach. <br /> The attached map shows the basic layout of the system. This map is of the area <br /> surrounding the sediment basin. <br /> A water intake hose is placed in the pond on the downhill side of the pond. This hose leads <br /> to a pump located on the raised edge of the basin. It is probably advisable to have the pump <br /> removed when not needed for dewatering the pond. Historically,there have been storms on <br /> Turkey Creek so large that the sediment basin is overtopped with water,portions of the access <br /> road downstream are ripped out, and access to the quarry is only available by driving in a large <br /> Technical Revision Menzer Quarry M-1973-009-HR June 2021 Page 5 of 7 <br />