Tailings dams are geotechnical structures that are increased in height with time. Several factors typical of tailings dams cause a higher risk of failure compared with other earth structures. The factors that influence the risk of tailings dam failure are discussed in this paper.
To assess the cumulative impact associated with use of groundwater for the Resolution Copper Project, modeling of proposed Resolution Desert Wellfield (DWF) pumping in East Salt River Valley (ESRV) was conducted in 2020 in support of an Environmental Impact Statement (EIS) using what was then ADWR’s current Phoenix AMA groundwater model. Results indicate that without Resolution DWF pumping, but including all other reasonably foreseeable future uses, pumping depths to groundwater beneath the Desert Wellfield at the end of a 100-year predictive period would be approximately 550 feet.
Temperatures in Arizona have risen about 2.5°F since the beginning of the 20th century. Recent upward trends in average temperatures and extreme heat are projected to continue. Under a higher emissions pathway, historically unprecedented increases in annual average temperature are projected during this century.
The first numerical groundwater flow model of the Pinal AMA was developed by the Arizona Department of Water Resources (ADWR) in 1990. This report documents an extensive update of the 1990 model.
Please see the attached responses to Groundwater Modeling Workgroup action items GW-75, GW- 76, GW-77, GW80 and GW-81 for your review and consideration.
Pinto Valley Mining Corp. submitted a mining plan of operations proposing to expand mining operations onto National Forest System lands to access mineralization that extends onto claims on National Forest System lands, to extend the mine life for approximately 19 years, to address existing Open Pit slope instability in the southeastern portion of the pit, and to consolidate prior authorizations that are reasonably incident to extraction, transportation, and processing of mineral deposits.
The purpose of this investigation was to assess the Property and surrounding areas to identify the presence or potential presence of recognized environmental conditions (RECs) potentially resulting in environmental impacts to the Property.
An evaluation of two areas, the West Plant and East Plant Analysis Areas, totaling approximately 3670 acres, for the presence of potential waters of the U.S.
This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (PM) data collected at the Resolution Copper Project near Superior, Arizona for the second quarter, April 1-June 30, 2014.
Baseline Biology and Land Use Report describing a parcel of federal land in the Tonto National Forest. Resolution intends to obtain the Parcel by way of a land exchange with the U.S. Forest Service and to conduct studies to determine the feasibility of establishing an underground copper mine at the site.
