Montgomery & Associates

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.

This Monitoring and Mitigation Plan has been developed to minimize environmental impacts from the Resolution Copper mine by repairing, rehabilitating, restoring, or replacing the affected environment as specified for each GDE in the following sections. The plan has been incorporated into the proposed project design and is intended to be implemented under both the No Action and Action alternatives.

This Monitoring and Mitigation Plan was prepared in response to public issues raised during scoping and public and agency comment on the Draft Environmental Impact Statement (DEIS) for the Resolution Copper mine and land exchange.

The program has been developed to characterize and monitor groundwater and surface water chemistry upgradient, downgradient, and in the vicinity of the proposed Skunk Camp Tailings Storage Facility (TSF).

This report presents the results of the Model including development, calibration, and predictive simulations in response to Water Working Group Action Item WR30 (Submittal of Skunk Camp Conceptual and Predictive Modeling Results).

This report summarizes the results of hydrogeologic investigations at the Skunk Camp site to inform Water Working Group Action Item WR30 (Submittal of Skunk Camp Conceptual and Predictive Modeling Results).

Aquifer testing at the Skunk Camp investigation area in Pinal and Gila Counties, Arizona.

This report describes the conceptual hydrogeologic model of the Skunk Camp site. The conceptual model encompasses the entire Skunk Camp model domain, with specific detail given to the vicinity of the proposed Skunk Camp tailings storage facility (TSF).

This submittal of hydrogeological data for the Skunk Camp site was prepared in response to Water Working Group Action Item WR-7 “Summary and Data for water quality, water level data base for Skunk Camp and Gila River”.

This catalog has been prepared to summarize available information for selected springs and seeps in the Upper Queen Creek, Devils Canyon, Mineral Creek, and Dripping Springs Wash watersheds.