On the night of August 3-4, 2014, the dam enclosing the tailings storage facility (TSF) at Mount Polley Mine, a copper and gold mine in interior British Columbia, failed.
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This chapter describes the planning requirements of 36 CFR 219 (“2012 Planning Rule”) and the procedures for developing, amending, and revising land management plans during the planning phase. FSH 1909.12, chapter 10 describes the requirements for the assessment phase for developing, amending, and revising land management plans.
Many information sources were used to develop this issue of the Arroyo, which summarizes Arizona's current water situation, future challenges, and options for closing the looming water demand-supply gap.
Resolution will implement best practice, proactive acid rock drainage (ARD) management strategies. The goal of these strategies will be to minimize ARD risks during operation and ensure that ARD is avoided after closure.
The first numerical groundwater flow model of the Pinal AMA was developed by the Arizona Department of Water Resources (ADWR) in 1990. This report documents an extensive update of the 1990 model.
