Rosemont Copper submitted an encroachment permit application to ADOT Tucson District on December 23, 2011 requesting access to SR 83 at approximately mile post 46.8. On July 9, 2012, Rosemont Copper submitted to ADOT information that updates the encroachment permit application including design drawings that are substantially complete. ADOT confirmed with the United States Forest Service (USFS) on July 19, 2012 that it had also received the updates.
Arizona Department of Transportation. 2012b. Rosemont Copper Project Draft Environmental Impact Statement Proposed SR 83 Improvements Primary Access Road. Letter from Mick Hont, P.E., Acting Tucson District Engineer (Operations), Arizona Department of Transportation, to Walt Keyes, Road Manager, Coronado National Forest. Phoenix, AZ: Arizona Department of Transportation. September 19.