Enclosed find a location map and hydrographs of projected groundwater level drawdown through 1,000 years post-mining at nine locations requested in a November 25, 2014 letter from the Coronado National Forest (CNF). These hydrographs are provided as an addendum to the November 30, 2012 letter submitted to you by Montgomery & Associates (M&A), which was prepared in response to a May 3, 2012 CNF letter regarding documents submitted in support of groundwater impacts for the Environmental Impact Statement (EIS). Hydrographs for this addendum are extracted from the same M&A model predictive simulations (baseline and sensitivity runs) described in the November 30, 2012 letter; no additional simulations were conducted for this current submittal. As requested by CNF, an Excel file containing the projected time-series drawdowns for the nine hydrograph locations will be submitted along with this letter.
Montgomery and Associates Inc. 2014. Project Groundwater Level Drawdown Hydrographs from M&A Rosemont Mine EIs Groundwater Flow Model in Response to November 25, 2014 Request from Coronado National Forest Service. Letter from Hale Barter, Montgomery and Associates, to Katherine Ann Arnold, Director of Environment, Hudbay Minerals. Tucson, Arizona: Montgomery and Associates Inc. December 10.