Water Resources

This technical memorandum was prepared to summarize results of drilling, construction, equipping, and testing at hydrologic test wells HRES-10 and HRES-11. The wells were installed to characterize hydrogeologic conditions in the Apache Leap Tuff (Tal) in the southeast extent of the Tal outcrop area near Mineral Creek. Monitoring data obtained from HRES-10 and HRES-11 will be incorporated into the RCM hydrologic monitoring program.

Identification of potentially jurisdictional waters within an approximately 45,000-acre analysis area, encompassing the Resolution operations and vicinity within Pinal and Gila Counties, Arizona.

This technical memorandum was prepared to document results and analysis of a 60-day pumping test conducted at hydrologic test well HRES-07.

Groundwater monitoring in the upper Queen Creek and Devils Canyon watersheds was initiated by RCM in early 2004.  The current RCM groundwater monitoring program includes 19 wells, boreholes or shafts.  Based on results of hydrogeological characterization studies conducted to date, three principal aquifers have been identified.  The purpose of the groundwater monitoring program is to provide hydrologic data for continued development and refinement of the conceptual hydrogeologic model for the ALT aquifer and adjacent aquifers in the study area that might be impacted by block-c

This technical memorandum was prepared to provide an interim summary of data collected at wells DHRES-01 and DHRES-02. Deep hydrogeologic test wells DHRES-01 and DHRES-02 were drilled and constructed during the period May 2 to September 10, 2008. In order to measure hydraulic heads at specific elevations in the Apache Leap Tuff (Tal) and Whitetail Conglomerate (Tw), vibrating-wire pressure transducers were grouted in the annulus between the borehole wall and conductor casing at wells DHRES-01 and DHRES-02.

This technical memorandum was prepared to summarize the results of a long-term aquifer test conducted at Resolution Project hydrologic characterization well HRES-4. Well HRES-4 is completed in the Apache Leap Tuff aquifer near Oak Flat, in the upper Queen Creek drainage basin of eastern Pinal County, Arizona.

Resolution Copper Company commissioned Golder and Associates to establish a program for the collection of baseline surface water data near the future RCC mine and associated facilities.  The intended uses of the data are primarily to support and EIS, develop a sound conceptual site model as a basis for predicting future impacts, and document current conditions as a baseline for judging future impacts.