Baseline Reports

Choose an option from these Baseline Report categories

The proposed Resolution Mine presents a number of socioeconomic issues which required research, analysis and modeling.

This Modeling Report includes a description of the methods and datasets used in the air quality modeling analyses to estimate...

This catalog has been prepared to summarize available information for selected springs and seeps in the Upper Queen Creek and...

Data summarized in this report include digital photographs taken between January 1, 2016 and December 31, 2017 (the Survey...

This modeling plan includes a description of the methods and data sets that are planned to be used in the air quality modeling...

This biological evaluation (BE) supports an evaluation of an alternative tailings storage facility (TSF; the Project) located...

This Modeling Plan includes a description of the methods and data sets that are planned to be used in the air quality modeling...

As part of continuing biological resources support for Resolution’s GPO, WestLand conducted surveys for special-status plant...

The impact of outdoor lighting from the proposed Resolution Copper mine on the night skies as viewed from four observation...

A probabilistic seismic hazard analysis (PSHA) and deterministic seismic hazard analysis (DSHA) were performed for Resolution...

This report summarizes the meteorological, upper-air (SoDAR1), nitrogen dioxide (NO2), sulfur...

This screening analysis was prepared to determine the potential for occurrence of special-status species and/or the presence...

This report summarizes the meteorological, upper-air (SoDAR1), nitrogen dioxide (NO2), sulfur dioxide (...

This report was prepared for Resolution Copper (RC) to describe surface water features monitored in the Oak Flat area.

This report summarizes the meteorological, upper-air (SoDAR1), nitrogen dioxide (NO2), sulfur dioxide (...

This catalog has been prepared to summarize available information for selected springs and seeps in the Upper Queen Creek and...

Computed flood flow frequency and volume‐duration‐frequency values for points of interest on Queen Creek and Devil’s Canyon....

The purpose of this study is to quantify climbing resources and to assess potential losses for the Environmental Impact...

The purpose of this traffic study is to evaluate the current and future transportation system at the proposed Resolution...

This assessment provides background information on concepts related to environmental sound including: descriptions of the...

This report summarizes the meteorological, upper-air (SoDAR), nitrogen dioxide (NO2), sulfur dioxide (SO2...

This report has been prepared to summarize the review and analysis of long-term hydrographs to support ongoing National...

A series of stream gauges is located within the upper Queen Creek, Devil’s Canyon, and Mineral Creek watersheds, located near...

This surface water baseline report has been prepared to support the ongoing National Environmental Policy Act (NEPA) review...

The Apache Leap South End parcels (“the Property”) are three non-contiguous private inholdings within the Tonto National...

The East Clear Creek parcel (“the Property”) is a private inholding within the Coconino National Forest, located along East...

Passive survey for raptors in 2016 were conducted at four sites in the vicinity of the Resolution Copper Project (the Project...

This Ecological Overview was prepared for approximately 160 acres (65 hectares) in Gila and Pinal counties, Arizona.

This report was prepared to support ongoing National Environmental Policy Act (NEPA) review process for the Resolution Project...

The purpose of this traffic study is to evaluate the current and future transportation system at the proposed Resolution...

Hydrologic test wells HRES-01, HRES-02, HRES-03, HRES-04, and HRES-05 were drilled and constructed during the period February...

Based on data needs identified at the end of 2013, further geochemical characterization of Resolution tailings was undertaken...

This report summarizes the meteorological, upper air, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and...

Resolution Copper Mining LLC (RCML) is overseeing a meteorological and air quality monitoring program to support several...

This report summarizes the meteorological, upper air, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and...

This report summarizes the meteorological, upper air, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and...

WestLand conducted survey in 2015 for the yellow-billed cuckoo at four sites in the vicinity of the Resolution Copper Project...

Earth Systems was engaged to conduct kinetic geochemical testwork on tailings samples generated from pilot scale metallurgical...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

WestLand was retained to provide wetland and floodplain analysis of a 2,422-acre are of federal land being proposed for...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

WestLand was retained to evaluate an approximately 539-acre area for the presence of potential waters to the U.S.

This report presents a flood-duration flow frequency analysis for selected durations (1 day, 3 day, 7 day, 15 day, and 30 day...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

In 2015 Audubon Arizona organized and conducted standardized surveys on three reaches of Queen and Arnett Creeks near Superior...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

WestLand was retained to conduct surveys for Arizona hedgehog cactus in conformance with the monitoring requirements of the...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

List of birds [frequency and season].

WestLand was retained to conduct biological baseline studies related to a proposed tailings alternative within the Tonto...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

WestLand Resources was retained to conduct a noxious weed survey for the proposed disturbance and access areas for baseline...

WestLand was retained to conduct wildlife monitoring surveys utilizing motion-sensitive cameras in the vicinity of Resolution'...

WestLand was retained to conduct raptor studies within the proposed Near West Tailings alternative area to provide baseline...

WestLand was retained to evaluate an approximately 14,273-acre area for the presence of potential waters of the U.S.

This technical memorandum was prepared to document results and analysis of a 90-day aquifer test conducted by RCM at well HRES...

Flooding is among the worst natural disasters responsible for loss of life and property in Arizona, underscoring the...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

RCM is committed to the prevention of discharges of oil or oily wastewater to navigable waters and the environment.

RCM is committed to the prevention of discharges of oil or oily wastewater to navigable waters and the environment.

WestLand was retained to conduct avian surveys in support of the proposed Near West tailing alternatives areas.

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

WestLand has conducted surveys for Arizona Hedgehog Cactus in support of Resolution Copper Mining pre-feasibility and...

At the request of Resolution Mining Company (RMC), this report presents the results of sitespecific probabilistic seismic...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

The goals of the baseline surface water monitoring program are to: a) Refine understanding of surface water  occurrence,...

This tech memo has been prepared to summarize results of the Phase II field investigations of the Near West site, conducted in...

This tech memo has been prepared to summarize results of the Phase I hydrogeologic assessment of the Near West site, conducted...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

This tech memo presents the first update of the Groundwater Assessment prepared by Golder Associates on behalf of Resolution...

WestLand was retained to conduct surveys for Arizona hedgehog cactus in conformance with the monitoring requirements of the...

WestLand was retained to conduct surveys for the Western Yellow-billed Cuckoo (WYBC) in portions of Devils Canyon and Pinto...

An investigation of hydrogeologic conditions for the Superior Basin has been completed by Montgomery.

WestLand was retained to conduct surveys for Arizona hedgehog cactus (AHC) in the vicinity of East Plant, along portions of...

RCM retained WestLand to conduct surveys for Morafka's desert tortoise (Gopherus morafkai, formerly G.

WestLand was retained to evaluate an approximately 560-acre private parcel 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 (...

WestLand was retained to conduct surveys of the reptile community at the Far West parcel and along portions of State Route 79...

WestLand was retained to conduct baseline biological surveys and studies in the project area.  Surveys reported here focus...

At HRES-19 and HRES-20, the primary target drilling depth was the contact between the Tertiary Apache Leap Tuff and the...

This is a summary of personal observations and impressions of the continued presence or absence of the herpetofauna which have...

This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (...

This draft technical memorandum has been prepared to summarize results of drilling, construction, and development of...

This technical memorandum was prepared to summarize modifications made to wells HRES-02, HRES-05, and HRES-10 in 2011.

WestLand was retained to conduct bird surveys within the Resolution Study Area.

WestLand was retained to conduct baseline biological studies in the Resolution Project Area.

In order to assist RCM in obtaining the necessary environmental permits, WestLand has been conducting various baseline...

WestLand conducted bat surveys in the project vicinity.  Surveys reported here focus specifically on potential habitat for...

WestLand was retained to conduct a raptor survey near Superior, Arizona.

WestLand was retained to conduct wildlife monitoring surveys utilizing motion-sensitive cameras in the vicinity of RCM's...

Resolution Copper has collected meteorological and air quality data to support several efforts during the pre-feasibility and...

WestLand was retained to conduct a raptor survey on a parcel of land administered by ASLD near Florence Junction, Pinal County...

In February 2010, Montgomery published a report entitled "Interim Results of Groundwater Monitoring, Upper Queen Creek and...

This technical memorandum was prepared to summarize results of drilling and construction at hydrologic test wells PHRES-01,...

This technical memorandum has been prepared to document results and analysis of a 23-day aquifer test conducted at hydrologic...

This technical memorandum has been prepared to summarize results of drilling and construction at hydrologic test well DHRES-14...

This technical memorandum has been prepared to summarize results of drilling, construction, and testing at hydrologic test...

This technical memorandum has been prepared to summarize the results of drilling, construction, and testing at hydrologic test...

This technical memorandum was prepared to summarize results of drilling, construction, and testing at hydrologic test well...

In 1995, the Magma Copper Company discovered a porphyry copper deposit beneath thick postmineral cover 2 km south of the...

This technical memorandum has been prepared to summarize results of drilling, construction, and testing at hydrologic test...

This technical memorandum was prepared to summarize results of drilling, construction, and testing at hydrologic test well...

WestLand conducted surveys for the Western Yellow-billed Cuckoo in portions of Devils Canyon and Mineral Creek in the months...

Resolution Copper Mining LLC (RCML) intends to implement a meteorological and air quality monitoring program to support...

This report summarizes meteorological measurements collected at the Resolution Copper Mine monitoring system.

WestLand was retained to evaluate two areas, the West Plant and East Plant Analysis Areas, totaling approximately 3670 acres,...

This list incorporates changes in taxonomy and nomenclature that have occurred since the last list was prepared.

This technical memorandum was prepared to summarize results of drilling, construction, equipping, and testing at hydrologic...

This technical memorandum was prepared to summarize results of drilling, construction, equipping, and testing at hydrologic...

This technical memorandum was prepared to summarize results of drilling, construction, equipping, and testing at hydrologic...

This report summarizes meteorological measurements collected at the Resolution Copper Mine monitoring system.

WestLand was retained to identify potentially jurisdictional waters within an approximately 45,000-acre analysis area,...

WestLand was retained to conduct surveys for Arizona hedgehog cactus within the Resolution Pre-Feasibility Activities area in...

This report summarizes meteorological measurements collected at the Resolution Copper Mine monitoring system.

WestLand was retained to conduct bird surveys in the vicinity or RCM's holdings near Superior, Arizona.

This report summarizes meteorological measurements collected at the Resolution Copper Mine monitoring system.

This report summarizes meteorological measurements collected at the Resolution Copper Mine monitoring system.

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

This report summarizes meteorological measurements collected at the Resolution Copper Mine monitoring system.  The purpose of...

Groundwater monitoring in the upper Queen Creek and Devils Canyon watersheds was initiated by RCM in early 2004.  The current...

This technical memorandum was prepared to provide an interim summary of data collected at wells DHRES-01 and DHRES-02.

The 7B Ranch falls within Audubon's identified "Lower San Pedro River Important Bird Area".

This report summarizes meteorological measurements collected at the Resolution Copper Mine monitoring system.  The purpose of...

This report summarizes meteorological measurements collected at the Resolution Copper Mine monitoring system.

WestLand was chosen by the Forest Service to act in the capacity of prime consultant provide environmental service in the...

This document presents the monitoring and quality assurance project plan for a meteorological monitoring program to be...

WestLand biologists set up three motion-sensitive cameras besides springs within a study area along Devils Canyon.

WestLand was retained to conduct bird surveys in the vicinity of RCM's holdings, near Superior, Arizona.

Fish surveys were conducted in order to determine the presence of absence of the Gila chub, as well as other native fishes...

The Research Ranch, near Elgin in Santa Cruz County, Arizona, is administered by the National Audubon Society.

This technical memorandum was prepared to summarize the results of a long-term aquifer test conducted at Resolution Project...

As part of planning for proposed pre-feasibility studies, RCM retained WestLand to conduct an Arizona hedgehog cactus survey...

List of mammals [confirmed by observation or sign; suspected, but not confirmed; resident, common; occasional].

The purpose of this tech memo is to describe and present the results of a ADEQ Tier 1 geochemical characterization program of...

Resolution Copper Company commissioned Golder and Associates to establish a program for the collection of baseline surface...

WestLand was retained to conduct a survey for Arizona hedgehog cactus on the approximately 1,224-hectare Federal Parcel.

WestLand was retained to conduct a reptile and amphibian survey on the approximately 1,224-hectare Federal Parcel.

WestLand was retained to conduct a survey for bats on the approximately 1,224-hectare Federal Parcel, in the Tonto National...

WestLand was retained to conduct a survey for raptors on the approximately 1,224-hectare Federal Parcel, in the Tonto National...

WestLand was retained to conduct a range of ecological studies of several parcels of land.

This report compares the floodplain and wetlands inventories for five offered lands ("Non-Federal Parcels") to the "Federal...

WestLand was retained to prepare an Ecological Overview for approximately 60.4 hectares in Maricopa County, Arizona.

WestLand was retained to prepare an Ecological Overview for an approximately 357-hectare site in Santa Cruz County, Arizona. ...

WestLand was retained to prepare and Ecological Overview for approximately 59.5 hectares of land along Turkey and Rock Creeks...

WestLand was retained to prepare an Ecological Overview for approximately 59.9 hectares of land along Tangle Creek within the...

WestLand was retained to prepare a Baseline Biology and Land Use Report describing a parcel of federal land in the Tonto...

WestLand was retained by Resolution to prepare an Ecological Overview for approximately 1,295 hectares of land along the Lower...

This inventory is an update of soil and range information and maps of the National Audubon Society Appleton-Whittell Research...

Temporary Contact Update

The Tonto Supervisor’s Office in Phoenix remains temporarily closed in July 2019 due to a building renovation project. As a result, questions from the media and general public regarding the Resolution Copper Project and Land Exchange should be e-mailed to John Scaggs at: john.scaggs@usda.gov

EIS Timeline - Feb 2019

  1. Proponent submits revised Plan of Operations [Sep 2014]
  2. Federal Register Notice of Intent to prepare EIS [Mar 2016]
  3. Public scoping period and scoping meetings
    [5 meetings between Mar-Jun 2016; comment period extended from 60 days to 120 days, closed Jul 18, 2016 ]
  4. Compile and review existing data
  5. Prepare project description and identify project alternatives
  6. Publish Alternatives Evaluation Report [Sep 2017]
  7. We Are Here
    Validate Baseline Information; analyze environmental effects
  8. Prepare Draft EIS
  9. Federal Register Notice of Availability of Draft EIS
  10. 90-day public review and comment period, with public meetings
  11. Respond to public comments and prepare Final EIS
  12. Federal Register Notice of Availability of Final EIS and Draft ROD
  13. 45-day Public Objection Period
  14. Resolve objections to Final EIS and draft ROD
  15. Issue Final Record of Decision

[ View Larger Version ]

Forest Points of Contact

Media & General Info
John Scaggs
jscaggs@fs.fed.us

Project Manager
Resolution Copper
Mary Rasmussen
mcrasmussen@fs.fed.us

Apache Leap Special Management Area
Apache Leap SMA website