Rosemont Copper - Sustainable Water Supply - Fact Sheet

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Fact sheet explaining Rosemont Copper's water conservation and recycling techniques.

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Rosemont Copper - Sustainable Water Supply - Fact Sheet

  1. 1. SUSTAINABLE WATER SUPPLYTHE FACTSWater ConservationRosemont Copper will employ water conservation and recycling techniques never before implemented at anArizona copper mining facility. These techniques will result in a substantial 50-60% reduction in water use fromtraditional mining practices. In all, Rosemont Copper will use an average of 5,000 acre feet of water a year for itsoperations, or approximately 125,000 acre feet over its operating lifetime. This is half the water that other Arizonacopper mines have used for similar production.Water SourcesThe initial source will be groundwater withdrawn from wells in the Upper Santa Cruz sub-basin of theTucson AMA basin and replenished with Colorado River water delivered by the Central Arizona Project(CAP). Rosemont Copper stored 45,000 acre feet of CAP water in the Tucson AMA basin from 2007-2009. That is nine years’ worth of mine process water stored in advance of the mine’s opening. Rosemontwill continue this proactive storage, and will also seek ways to use reclaimed (effluent) water or otherrenewable supplies for its mining operations consistent with local water management planning efforts.Local ProtectionRosemont Copper will use its replenishment program to restock any groundwater removed from the Tucson AMAbasin. Rosemont Copper believes in responsible water management and will continue to emphasize sustainabilityin its water production, water use and local replenishment. CONSERVATION: Rosemont Copper is serious about environmental respon- sibility and protecting and conserving Southern Arizona’s water supply.

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