Geotechnical Addendum Volume 1 of 3

Document ID: geotechnical-addendum-2009

This report presents an addendum to the 2007 Geotechnical Study report (Tetra Tech, 2007) prepared for the Rosemont Copper Project (Project) owned by Rosemont Copper Company (Rosemont).

The Project site is located approximately 30 miles southeast of Tucson, west of State Highway 83 on the east slope of the Santa Rita Mountains in Pima County. In geographical terms, the Rosemont Property location coordinates are approximately 31º 50’N and 110º 45’W. Access to the property is from Interstate 10 to State Highway 83 south, then west on Forest Road (FR) 231 (Figure 1).