Documents

Chemical composition of rainwater and its probable relation to soil water and exchangeable cations in weathering processes.

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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.

This study provides an estimate of the economic contribution of on-farm agriculture to the Maricopa County economy, as well as an estimate of the regional economic contribution of agricultural activity taking place within the Gila River Indian Community.

The main objectives of this document are to recommend appropriate procedures for selecting and accommodating the Inflow Design Flood for dams based on current and accepted practices and to promote a reasonable degree of consistency and uniformity among state and federal agencies.

Summarize available guidance regarding the selection of appropriate baseline conditions against which Resolution Copper project impacts will be compared; and where necessary, document the rationale for selecting baseline conditions for specific resources.

The Peg Leg Pipeline Corridor (PLPC) DEIS study considered two potential pipeline corridor alignment options for transport of mill tailings from the West Plant concentrator site to the Peg Leg TSF and return of reclaim water from the Peg Leg TSF back to the West Plant concentrator site.

Our results demonstrate the existence of a marked antagonism between physicochemical stresses, with water stress enhancing the resistance of photosystem 11 to constraints (heat, strong light at high temperature) that are usually associated with drought in the field.

The GARD Guide deals with the prediction, prevention and management of drainage produced from sulphide mineral oxidation, often termed “acid rock drainage” (ARD).

Summary of tailings storage facility (TSF) alternatives seepage control levels (description, schematics and estimated seepage rates) and general comparison to estimated seepage rates for other existing typical TSFs in the region.

The growth in the use of Geographic Information Systems (GIS) has highlighted the need for regional and national digital geologic maps that have been attributed with information about age and lithology.