Documents

An existing model of desert pavement formation suggests desert pavement clasts rise vertically on an accreting eolian mantle and the underlying vesicular horizon coevolves with pavement formation. Results presented here support this model and provide a mechanism whereby eolian material is transported from the ground surface to ped interiors, thereby increasing the thickness of the vesicular horizon help identify the processes of underlying desert pavements.

The Heritage Data Management System (HDMS) is part of a global network of more than 80 Natural Heritage Programs and Conservation Data Centres. HDMS information is available so Arizonans can make prudent decisions weighing future development, economic growth, and environmental integrity.

Technical memorandum evaluating potential drawdown impacts from groundwater pumping to supply water for the proposed Resolution Copper mine.

The effects of particulate air pollutants on vegetation have been studied, mainly under laboratory conditions. This research was concentrated on the major effects of leaf incrustations, namely interference with light absorption, reduction in net photosynthesis, and resultant reduction in growth.

This Resource Management Plan/Final Environmental Impact Statement has been prepared to guide management of 1,400,000 acres of public land in the Safford District (southeastern Arizona) for approximately the next 15 years. The decisions in the approved Resource Management Plan/Record of Decision will determine which use or combination of uses will be emphasized in the District.

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Materials that meet the criteria of Freedom of Information Act exemptions are not posted on this website. Culturally sensitive materials not posted here fall under this criteria.

COVER ONLY

Materials that meet the criteria of Freedom of Information Act exemptions are not posted on this website. Culturally sensitive materials not posted here fall under this criteria.

Water balances models have been developed for each alternative. These water balance models have been augmented by the addition of chemical balances. The purpose of this memo is to provide a description of the predictions of the chemical balance and resulting solute chemistry for Alternative 6.

Summary of reconnaissance investigations at the Skunk Camp site, an alternative site for a future tailings storage facility (TSF).

The purpose of this memo is to document an examination of hydrologic trends from monitoring conducted over the last decade or more by Resolution Copper for Devil’s Canyon and Oak Flat. Comments from the public have indicated the belief that ongoing dewatering pumping of the deep aquifer system has already affected water resources in both these areas.