Technical Reports

April 28, 2016

This document represents the Final Reinitiated Biological Opinion requested from the U.S. Fish and Wildlife Service by the Forest Service by submittal of the Supplemental Biological Assessment on...

June 1, 2015

This document was prepared to address new information and other changes that became available after the biological opinion (BO) for the proposed Rosemont Copper Project was issued by the U.S. Fish...

December 13, 2013

The 2007 Regional Forester’s...

December 1, 2013

This biological evaluation analyzes the potential impacts to U.S. Forest Service (Forest Service) and Bureau of Land Management (BLM) Sensitive wildlife and plant species from the proposed...

This report identifies plant and animal taxa of conservation concern that potentially occur in the vicinity of the proposed Rosemont Copper Mine in the Santa Rita Mountains and the potential...

March 22, 2013

As part of the ongoing baseline survey being funded by Rosemont Copper Company for their Rosemont Project, WestLand Resources, Inc. (WestLand) surveyed 21 abandoned mine features within the...

February 1, 2013

The Coronado National Forest (CNF) submitted a Biological Assessment in June 2012 (June BA) and a Supplementary BA in October 2012 (October SBA) to US Fish and Wildlife Service (FWS) for Section 7...

January 23, 2013

The proposed Rosemont Copper Project (Project) is a new copper project consisting of an open pit mine and associated processing facilities. The Project will be located in the Santa Rita Mountains...

January 16, 2013

WestLand Resources, Inc. (WestLand), was retained by Rosemont Copper Company to prepare a Biological Evaluation (BE) for a proposed reroute of the Arizona Trail (the Project). The Project will...

December 20, 2012

Traffic analyses were performed for the Rosemont Copper Project (Project) for two separate mine alternatives. The two alternatives included the...

December 7, 2012

WestLand Resources, Inc. (WestLand) was retained by Rosemont Copper Company (Rosemont) to prepare a series of technical memorandums to supplement the Biological Assessment for the Rosemont Copper...

December 5, 2012

The proposed Rosemont Copper Project (Project) is a new copper project consisting of an open pit copper mine and associated processing facilities. The Project will be located in the Santa Rita...

Appendix A. Particle Size Distributions

Appendix B. Quarterly PM10 Monitoring Summaries

Appendix C. Statistical Evaluation of Ambient PM10 Measurements

...

December 4, 2012

The proposed Rosemont Copper Project (Project) is a new copper project consisting of an open pit copper mine and associated processing facilities that will be located in the Santa Rita Mountains...

December 1, 2012

The proposed Rosemont Copper Project (Project) is a new copper project consisting of an open pit copper mine and associated processing facilities. The Project will be located in the Santa Rita...

This study presents results from computer calculations of the sky brightness due to proposed operations in the Rosemont Copper Mine (RCM) when viewed from six observation points, three of which...

This document, "CALPUFF Modeling Protocol to Assess...

November 9, 2012

WestLand Resources, Inc. (WestLand) was retained by Rosemont Copper Company (Rosemont) to prepare a series of technical memorandums to supplement the Biological Assessment for the Rosemont Copper...

WestLand Resources, Inc. (WestLand) was retained by Rosemont Copper Company (Rosemont) to prepare a series of technical memorandums to supplement the Biological Assessment for the Rosemont Copper...

November 8, 2012

WestLand Resources, Inc. (WestLand) was retained by Rosemont Copper Company (Rosemont) to prepare a series of technical memorandums to supplement the Biological Assessment for the Rosemont Copper...

November 1, 2012

This study presents results from computer calculations of the sky brightness due to proposed operations in the Rosemont Copper Mine (RCM) when viewed from six observation points, three of which...

October 1, 2012

This document was prepared to address new information obtained after the Biological Assessment (BA) for the proposed Rosemont Copper Project was submitted to the U.S. Fish and Wildlife Service (...

September 13, 2012

WestLand Resources, Inc. (WestLand) was retained by Rosemont Copper Company to conduct surveys for Hexalectris colemanii, Coleman’s coralroot; and H. arizonica, Arizona crested...

September 12, 2012

WestLand Resources, Inc. (WestLand) was retained by Rosemont Copper Company (Rosemont) to document the characteristics of habitats occupied by Hexalectris colemanii and H. arizonica...

WestLand Resources, Inc. (WestLand) was retained by Rosemont Copper Company to conduct surveys for Coleman’s coralroot (Hexalectris colemanii) and Arizona crested coralroot (...

August 31, 2012

WestLand Resources, Inc. (WestLand) conducted surveys in 2011 for four Coronado National Forest sensitive plant species in the Rosemont Project Area and in additional locations outside the...

August 13, 2012

This report summarizes meteorological measurements collected at the Rosemont Copper Mine monitoring stations. The Rosemont Copper Mine is a new open pit copper mine proposed by Augusta Resource...

August 7, 2012

Coronado National Forest personnel requested an explanation of the word "cave" recorded in two historic drill logs (Hole 1455 and A-746) included in Appendix B-2 of Tetra Tech's 2009...

July 11, 2012

This memorandum provides the results of surveys for the spring features identified as potentially occurring in the Analysis Area. The objectives of the survey were to:

  1. Map springs...

July 9, 2012

This letter transmits two (2) copies of information that updates the encroachment permit application submitted to the Arizona Department of Transportation (ADOT) on December 23, 2011. This...

As a component of Rosemont’s overall environmental stewardship vision for the Rosemont Copper Project, this Preliminary...

July 1, 2012

The Rosemont Copper Preliminary Invasive Species Management Plan (Plan) was created to minimize, reduce, or eliminate the potential for introduction, establishment, spread and...

This report develops the key site water management structures planned for the Rosemont Copper Project designed to protect the environment and Project facilities. This preliminary site water...

Tetra Tech completed a soil resource assessment within the vicinity of the proposed Rosemont Copper Project (Project) in Pima County, Arizona for the Rosemont Copper Company (Rosemont). The soil...

June 29, 2012

A response to the May 3, 2012 letter from Coronado National Forest (CNF) concerning their review of documents submitted in support of groundwater impacts for the Rosemont...

This technical memorandum responds to the May 3, 2012, Coronado National Forest (Forest) request for additional information on the Rosemont Project groundwater flow models. Groundwater flow models...

June 25, 2012

Engineering Analytics Inc. has prepared this Technical Memorandum to present a conceptual design for a riser pipe that will allow Rosemont to install a pump back system to remove treated water...

June 18, 2012

The Rosemont Copper Project (Project) site lies within an area of concern relative to the effects of light pollution. Because the Project will operate around the clock, additional light pollution...

June 1, 2012

EXECUTIVE SUMMARY

The U.S. Forest Service (Forest Service) is requesting to initiate formal consultation with the U.S. Fish and Wildlife Service (USFWS), pursuant to Section 7(a)(2) of...

The Rosemont Primary Access Road Intersection Project Traffic ...

The Rosemont Copper Project (Project) is a proposed open pit mine located in Pima County, Arizona with an operational life of 20 to 25 years. This Project will require the construction of four (4...

This Integrated ...

This preliminary Rosemont Copper Transportation Plan provides guidelines to help minimize impacts to areas, resources, and people adjoining, served by, or otherwise affected by roads on United...

The Rosemont Copper Transportation Plan provides guidelines to help minimize impacts to areas, resources, and people adjoining, served by, or otherwise affected by roads on United States Forest...

May 4, 2012

March 30, 2012

The purpose of this Davidson Canyon Conceptual Groundwater Monitoring Plan (Plan) is to recommend additional monitoring locations and data collection that can be used to assist in predicting and...

March 19, 2012

On Tuesday, November 15, 2011, Rosemont Copper Company (RCC) submitted to the Arizona Department of Environmental Quality (ADEQ) a Class II Permit Application entitled “Application for a...

WestLand Resources, Inc. is submitting this letter to revise acreages reported in two documents produced for biological resource surveys of area added to the West end of Rosemont's utility...

March 15, 2012

On November 1, 2010, the U.S. Army Corps of Engineers (Corps) approved a preliminary jurisdictional determination (JD) of potential

March 13, 2012

On November 1, 2010 the U.S. Army Corps of Engineers (Corps) approved a preliminary jurisdictional determination (JD) of potential

This report is a revised addendum to the report “State-Protected Plant and ...

March 1, 2012

This plan is designed to supply data required to detect potential impacts from Project development on springs and on regional streams in and downstream of the Project area, particularly the reach...

February 3, 2012

The Rosemont Holdings encompass patented and unpatented claims and fee lands within privately owned, USDA Forest Service, and Bureau of Land Management lands on the northeast side of the Santa...

January 31, 2012

This Technical Memorandum summarizes the conceptual stormwater control features anticipated for the Barrel Alternative associated with the proposed Rosemont Copper Project (Project) in Pima County...

This technical memorandum summarizes the conceptual stormwater control features anticipated for the Scholefield-McCleary Alternative associated with the proposed Rosemont Copper Project in Pima...

January 24, 2012

The Rosemont Copper Project (Project) site lies within an area of concern relative to the effects of light pollution. Because the Project will operate around the clock, additional light pollution...

January 13, 2012

December 23, 2011

Rosemont Copper Company (Rosemont) proposes to develop an open-pit copper mine with associated processing facilities and waste disposal sites within the Rosemont Holdings, which encompass patented...

The purpose of this document is to present an overview to Maest and Kuipers (2006; hereafter M-K (2006))1 and that study’s effort to assess the reliability of water quality...

December 20, 2011

In response to public comments regarding the estimated economic impacts displayed in the Rosemont Copper Mine DEIS (which came from a study conducted by Applied Economics (AE)), the US Forest...

December 2, 2011

This document presents an air dispersion modeling protocol that will be followed to assess...

December 1, 2011

1. Airborne and Ground‐based Reference Data Collection

This report describes baseline sky brightness data collected in fulfillment of the Agreement dated 10/25/2011, and its various...

November 15, 2011

This document presents the information necessary for the Arizona Department of Environmental Quality (ADEQ) to process the RCP application and...

The RCP has the potential to emit the following regulated air pollutants throughout the life of the mine: (a) total suspended...

November 1, 2011

October 31, 2011

This report is an addendum to the report “Pima Pineapple Cactus Survey: Proposed Rosemont Project Santa Rita Road Alignment,” dated December 18, 2009, produced by WestLand...

This report is an addendum to the report “Saguaro and Agave Survey: Proposed Rosemont Project Santa Rita Road Alignment,” dated February 3, 2010, that WestLand Resources, Inc...

WestLand Resources, Inc., (WestLand), was retained by Rosemont Copper Company (Rosemont) to survey for agave (Agave parryi and A. palmeri) and saguaros (Carnegiea gigantea...

October 28, 2011

WestLand Resources, Inc. (WestLand) biologists made 10 field visits and inspected a total of 33 mines in 2011 to investigate the level of bat use within the Rosemont Mine project area and adjacent...

October 27, 2011

Rosemont Copper Company (Rosemont) has authorized WestLand Resources, Inc. (WestLand) to conduct a variety of baseline biological studies within the Rosemont Holdings. Pursuant to that effort,...

October 26, 2011

Rosemont Copper Company (Rosemont) proposes to develop an open-pit copper mine with associated processing facilities and waste disposal sites within the Rosemont Holdings, which encompass patented...

October 11, 2011

Rosemont Copper is transmitting the following applications for your records.

  • Section 404 Permit Application for the Rosemont copper Project ACOE File No. SPL -2008-00816- MB,...

October 7, 2011

This report is an addendum to the report “Pima Pineapple Cactus Survey: Proposed Rosemont Project Santa Rita Road Alignment”, dated December 18, 2009, produced by WestLand...

This report is an addendum to the report “Saguaro and Agave Survey: Proposed Rosemont Project Santa Rita Road Alignment”, dated February 3, 2010, that WestLand Resources, Inc...

September 1, 2011

The Rosemont Holdings encompass patented and unpatented claims and fee lands within privately owned, USDA Forest Service, and Bureau of Land Management lands on the northeast side of the Santa...

August 28, 2011

The 2006 Pima Coun ty Outdoor Lighting Code is the Code in effect regulating the amount of light permitted outdoors within the City of Tucson and Pima County. The Code describes several Lighting...

August 19, 2011

In this technical memorandum, WestLand Resources, Inc. (WestLand) describes the likely range of effects of the proposed action and action alternatives being considered by the Tonto Nation Forest...

August 18, 2011

WestLand Resources, Inc. (WestLand) was retained by Rosemont Copper Company (Rosemont) to conduct baseline biological studies in support of their effort to obtain licensing for mining operations...

The technical memorandum contains the Pima County Regional Flood Control District (PCRFCD) comments regarding hydrology for Rosemont Mine, followed by Tetra Tech’s responses.

At the request of Rosemont Copper, Montgomery & Associates (M&A) evaluated...

August 17, 2011

The purpose of this memorandum is to provide characterization of the nature and extent of offsite riparian resources that might be affected by the proposed Rosemont Copper Mine. The study area...

At the request of Rosemont Copper Company, Engineering Analytics (EA) has completed a postclosure analysis to determine the...

August 15, 2011

This document presents a summary of the modeling results for the proposed four alternative scenarios described in the draft...

August 5, 2011

At your request, MWH Americas, Inc. (MWH) has reviewed the input and output (I/O) files prepared by Montgomery and Associates (M&A) for the simulations of Rosemont Copper’s mine supply...

July 21, 2011

This technical memorandum provides a summary of Tetra Tech’s findings related to predicted regulatory (100-year) hydrology and average-annual...

July 11, 2011

This technical memorandum provides a summary of Tetra Tech's findings related to predicted regulatory (100-year) hydrology and average-annual...

June 9, 2011

 
This tech memo provides responses to comments made by SRK on behalf of the CNF concerning the Infiltration, Seepage...

June 8, 2011

 
The application of rock riprap associated with the drop chutes will be re-evaluated in the final design effort and alternate channel...

May 31, 2011

The proposed Rosemont Copper Company (Rosemont) operation will require approximately 3,800 gallons per minute (gpm) (6,132...

 
The springs inventory was extensively revised by SWCA.  

This technical memorandum refers to the Rosemont Copper Technical Memorandum dated May 6, 2011, and the referenced Doc# 049/11-15.3.2. In that document, Rosemont Copper and TetraTech respond to...

May 23, 2011

 
Tetra Tech provided acceptable responses to all questions with the exception of two items listed.

May 18, 2011

Rosemont Copper Company (Rosemont) received review comments on both the Montgomery & Associates (M&A) and Tetra Tech groundwater flow models in a letter titled “Groundwater Modeling...

May 13, 2011

 
Response to the May 5, 2011 Technical Memorandum prepared by SRK Consulting titled Rosemont Pit Lake...

 
Tetra Tech's response to review comments on the pit lake...

May 6, 2011

 
This tech memo is in response to the April 5, 2011 tech memo prepared by Golder Associates titled Review of "Rosemont Site Water Management Update Review Responses".

 
FS/BLM comments are restated in Section 2.0 and followed by responses.  Only responses pertinent to Tetra Tech are provided in this tech memo.

April 22, 2011

 
A technical reviw of "Infiltration, Seepage...

April 14, 2011

A technical review has been undertaken and this Technical Memorandum prepared at the request of SWCA and the Coronado National Forest, in accordance with a request for a Statement of Work dated...

April 12, 2011

 
This tech memo presents revised Fate and Transport modeling of the proposed Rosemont Copper Project Heap Leach...

April 11, 2011

During post-submittal review of the Rosemont Mine model submitted in 2010, Montgomery & Associates (M&A) determined that precipitation...

April 6, 2011

The Rosemont Copper Project has re-evaluated its operations described in the document "Rosemont Copper Company, Emission...

 
This memo reviews the internal technical consistency of the:  Tetra Tech numerical groundwater models (Steady-State, Mining Phase, and Post Closure models) and the Tetra Tech...

April 5, 2011

 
This memo provides additional comments to Tetra Tech's reponses to Golder's review on November 30, 2010.

April 1, 2011

A future-oriented investment and jobs strategy grounded in the present would leverage the best of Arizona‟s multi-use open spaces strategies, while conserving the natural capital that provides the...

March 31, 2011

 
The comments in the present review are grouped into two topics: (1) pit lake...

March 16, 2011

 
Additional tailings...

March 8, 2011

The technical memorandum titled Rosemont Flow-Through Drain Design Summary (Tetra Tech, 2010d) was prepared in response to the April 14, 2010 Comprehensive Request for Additional Information from...

February 14, 2011

A technical review has been undertaken and this Technical Memorandum prepared at the request of SWCA and the Coronado National Forest, in accordance with a request for a Statement of Work dated...

January 25, 2011

 
This tech memo was prepared in response to additional comments received by RCC in a letter from ADEQ.

January 13, 2011

This memorandum provides a technical review of the full version of the report Regional Groundwater Flow Model Rosemont Copper Project (Tetra Tech, 2010i) dated November 2010. This review was...

January 10, 2011

WestLand was retained by Rosemont to evaluate and respond to what we understood to be a determination made by the CNF that the Rosemont Copper Project "may affect, likely to adversely affect...

January 1, 2011

This study presents results from computer calculati ons of the sky brightness due to proposed operations in the Rosemont Copper Mine (RCM) when v iewed from six observation points, three of which...

Applied Economics was retained by Tucson Regional Economic Opportunities (TREO) to perform an economic...

Seeps and springs (hereafter referred to as springs) occupy a very small land area in the arid southwest, yet they are vital resources for many plant and animal species. Despite their limited...

Rosemont Copper has recently revised its numerical groundwater model, completed by Errol L. Montgomery and Associates, and has also had Tetra Tech complete a new groundwater model in support of...

December 16, 2010

This tech memo summarizes the landform design presented by H. Schor in a draft report titled Landform Design Report for the Rosemont Mine Project.

December 1, 2010

 
Overview of water usage in copper mining in Arizona.

November 30, 2010

 
The purpose of this report is to provide a brief review that addresses in a general manner the potential for Rosemont using the alternative water sources identified by the CNF. ...

This tech memo provides responses to the review comments provided to Rosemont Copper Company on the Site Water Management Update report prepared by Tetra Tech.

November 23, 2010

 
This tech memo presents responses to the specific comments by SRK and Tetra Tech's revisions included in the updated report.

This tech memo presents responses to the specific comments presented by SRK in a Technical Memorandum titled Preliminary Geochemistry Review - Proposed Rosemont Copper Project.

November 17, 2010

November 16, 2010

This tech memo provides a response to SRK's comments.

November 12, 2010

This addendum includes additional explanation and analysis for the groundwater flow model used to simulate impacts of water supply pumping for the Rosemont mine as part of an EIS.

In this memorandum, WestLand analyzes the distribution of the seven species considered and present results of extensive field surveys of five of the species. The seven species considered in this...

November 1, 2010

This report presents an update to the February 2010 Geochemical...

This report presents the results of a regional groundwater flow model developed for the Rosemont project. This geologically based, numerical flow model predicts the formation of a pit-lake within...

This report presents an update to the June 2007 Survey of Salvage Topsoil Resources. The original survey area was expanded from the Mine Plan of Operations...

October 26, 2010

Review comments from SRK Consulting have indicated that the samples selected fro geochemical characterization are concentrated in the center of the Rosemont deposit. This response intends to...

Response to review comments from SRK Consulting regarding the Geochemical Pit Lake...

October 22, 2010

This memorandum provides a technical review of the full version of the Montgomery & Associates (M&A) report, Revised Groundwater Flow Modeling Conducted for Simulation of Proposed Rosemont...

September 27, 2010

September 15, 2010

This tech memo provides a summary of Tetra Tech's findings related to the infiltration (recharge) of stormwater runoff...

This tech memo summarizes the stormwater control features anticipated for the Expanded Barrel Only Alternative associated with the proposed Rosemont Copper Project in Pima County Arizona.

September 10, 2010

This tech memo presents a Stormwater Assesment for the Expanded Barrel Only Alternative being considered in the US Forest Service EIS for the proposed Rosemont Copper Project.

August 31, 2010

This tech memo documents the results of the DIA analysis, which was based on Tetra Tech’s regional groundwater flow models.

This tech memo is in response to April 14, 2010 Comprehensive Request for Additional Information from ADEQ.

This tech memo provides information related to the flow-through drain system that is proposed as part of the Rosemont Copper Project.

 
This tech memo provides estimates of sediment...

This tech memo summarizes the results of a groundwater flow modeling effort prepared by Tetra Tech for the proposed Rosemont Copper Project.

Provides information related to the Heap Leach...

This tech memo provides an analysis of the BADCT alternatives for the Settling Basin at the Rosemont Copper Project.

This tech memo provides a Waste Rock...

August 30, 2010

The groundwater flow model was designed to simulate conditions prior to pit development, during pit dewatering...

This tech memo provides details related to the source of the ...

This tech memo serves as a transmittal of an updated Infiltration, Seepage...

In addition to the tailings...

August 27, 2010

This tech memo addresses design and drawing revisions that have occurred since the preparation of the report titled "Process Water...

August 26, 2010

This tech memo summarizes the protocol and test results performed in support of the Rosemont Heap Leach...

August 24, 2010

This Tech Memo summarizes the results of a predictive pit lake...

 
The following technical review has been prepared to review the underlying assumptions contained within this study and to assess the conclusions of the study.

August 23, 2010

AMEC has prepared this memorandum at the request of Rosemont Copper to provide responses to the April 14, 2010 letter received from ADEQ.

This tech memo provides estimated source volumes and chemical makeup for the following facilities for use, as needed, in the area-wide fate and transport modeling work associated with the Rosemont...

This tech memo provides estimated depth to groundwater from existing ground and/or facility bottom elevations based on the updated locations of those facilities regulated under the APP program.

Modeling results presented herein are being provided as an addendum to the report titled “Rosemont Copper Company: CALPUFF Modeling Report to Assess Impacts In Class I Areas” submitted...

August 20, 2010

This tech memo supersedes any previous liner leakage...

This tech memo supesedes any previous liner leakage...

This tech memo documents the durability of the overliner drain fill planned for use as part of the Heap Leach...

August 18, 2010

This tech memo provides an updated layout of the facilities at the Rosemont Copper Project.

August 17, 2010

 
This memo provides a technical review of the two Technical Memoranda, Groundwater Flow Model Construction and Calibration and Steady-State Sensitivity Analyses.

 
This Technical Memorandum presents the sensitivity analyses performed on the groundwater flow models prepared by Tetra Tech for the proposed Rosemont Copper Project.

August 14, 2010

This tech memo summarizes the methods and computations employed to estimate the capacity of the Phase 2 Heap Leach...

August 13, 2010

WestLand Resources, Inc. (WestLand), was retained by Rosemont Copper Company to survey for Pima pineapple cactus (PPC; Coryphantha scheeri var. robustispina) along the southern utility line...

This tech memo documents the estimated deflection of the solution collection pipes related to the Heap Leach...

August 12, 2010

* Redactions made to protect sensitive information

August 11, 2010

This tech memo provides a summary of Tetra Tech's anchor trench stability analysis related to the Heap Leach...

Provides a summary of Tetra Tech's settlement analysis related to the Heap Leach...

August 10, 2010

Presents supporting design information related to the leachate collection piping layout for the Heap Leach...

August 5, 2010

Golder Associates (Golder) conducted a review of the Site Water Management Update for the Rosemont Copper Project (April 2010, Tetra Tech). The Site Water Management Update is presented in five...

August 3, 2010

This tech memo provides an updated volume requirement for the planned Raffinate...

 
This tech memo was prepared to provide comments related to the review of the following report: Davidson Canyon Hydrogeologic Conceptual Modle and Assessment of Spring Impacts,...

August 2, 2010

 
This tech memo provides a technical review of Hydraulic Property Estimates (Tetra Tech, 2010).

August 1, 2010

This report presents the results of the infiltration and ...

July 30, 2010

 
This memo provides a technical review of the tech memo Hydrogeologic Framework Model (Tetra Tech, 2010)

July 28, 2010

The Rosemont Copper Project has the potential to emit regulated air pollutants throughout the life of the mine. Emissions of potential pollutants are calculated using emission unit process rates,...

The Federal Land Manager (FLM) requested an air impact...

July 26, 2010

Rosemont Copper Company (Rosemont) is planning the development of an open pit mining and mineral processing operation known as the Rosemont Copper Project (Project) on the east side of the Santa...

July 9, 2010

Tetra Tech's groundwater flow modeling team has evaluated short-term aquifer...

Rosemont Copper Company (Rosemont) is planning the development of an open pit mining and mineral processing operation known as the Rosemont Copper Project (Project) on the east side of the Santa...

July 3, 2010

This Tech Memo provides an update on the status of the sensitivity analyses performed to date on the groundwater flow models prepared by Tetra Tech for the proposed Rosemont Copper Project (...

July 1, 2010

A description of the hydrologic dynamics and key physical processess that are governing groundwater-surface water interactions in Davidson Canyon which includes a discussion on springs and their...

May 19, 2010

This Landform Design Study was performed at the request of the CNF & SWCA to develop an alternative to the design of certain mine waste rock...

May 11, 2010

Provided here are comments related to the review of the following two reports: (a) Davidson Canyon Hydrogeologic Conceptual Model and Assessment of Spring Impacts, Rosemont Copper Project (Tetra...

May 7, 2010

SRK evaluated each ACD for technical and practical feasibility on the basis of expert professional judgment and knowledge of the specific scientific and engineering aspects of the alternative....

May 3, 2010

This memorandum provides a technical review of the report, Geochemical...

April 30, 2010

A technical review has been undertaken, and this Technical Memorandum prepared at the request of SWCA and the Coronado National Forest, in accordance with a request for a Statement of Work dated...

April 21, 2010

The updated groundwater model was used to predict dewatering...

April 15, 2010

This report characterizes the distribution and diversity of talus snails (Sonorella spp.) along the "North Ridge" of the Santa Rita Mountains in Pima County, Arizona.

April 10, 2010

This Technical Memo provides background information on how the post-closure conditions related to the Rosemont Copper Project might be affected by partial backfilling of the Open Pit.

April 9, 2010

This tech memo provides a summary of Tetra Tech's findings related to predictetd average-annual sediment...

This tech memo provides a summary of Tetra Tech's findings related to predicted average-annual sediment...

April 6, 2010

This tech memo discusses select stormwater components associated with the design of the Heap Leach...

April 5, 2010

This tech memo discusses stormwater management for the final reclaimed surface of the Dry Stack Tailings...

This tech memo provides Tetra Tech's design analysis related to the use of flow-through drains at the proposed Rosemont Copper Project.

This tech memo discusses the design and sizing of the flow-through drains associated with the base concept of the Rosemont Ridge Landform at the proposed Rosemont Copper Project.

This tech memo provides a summary of Tetra Tech's findings realted to the infiltration of stormwater runoff...

Revised tech memo regarding Tetra Tech's findings related to the infiltration of stormwater runoff...

This tech memo discusses the hydrologic and hydraulic calculations performed for the Pit Diversion Channel...

April 2, 2010

This tech memo describes the hydrologic & hydraulic methodology used to manage and control storm runoff...

This report addresses the detailed engineering of the Dry Stack Tailings...

This tech memo discusses stormwater management and the design of detention ponds and stormwater conveyance channels for the final reclaimed surface of the Waste Rock...

April 1, 2010

WestLand field teams have mapped and described riparian habitat...

This report further develops the key site water management structures planned for the Rosemont Copper Project designed to protect the environment and Project facilities. This update is specific...

March 31, 2010

This tech memo presents a Stormwater Assessment of the Scholefield Tailings...

March 15, 2010

This tech memo documents the Prescriptive BADCT closure recommendations for the lined facilities associated with the proposed Rosemont Copper Project.

March 12, 2010

This tech memo summarizes the results of a slope...

March 11, 2010

This tech memo documents the calculations used to compare the potential soil erosion that could result from various closure configurations for the Rosemont Copper Project.

March 9, 2010

 
This information is preliminary and provided for use in alterntive visual analysis associated with the Rosemont Copper Project.

March 8, 2010

This tech memo presents a Viewshed...

This tech memo presents a Viewshed...

This tech memo presents a Viewshed...

This tech memo presents a Viewshed...

This tech memo presents a Viewshed...

March 5, 2010

This tech memo presents a Stormwater Assessment for the Barrel and McCleary Alternative being considered in the US Forest Service EIS for the proposed Rosemont Copper Project. This analysis...

Cited by Tetra Tech in 012430. (R-326)

This tech memo presents a Stormwater Assessment for the Mine Plan of Operations...

This tech memo presents a Stormwater Assessment for the Partial Backfill Alternative being considered in the US Forest Service EIS for the proposed Rosemont Copper Project. This analysis...

This tech memo provides a summary of Tetra Tech's findings related to predicted post-mining regulatory (100-year) hydrology and average-annual runoff...

This tech memo presents a Stormwater Assessment for the Scholefield Tailings...

This tech memo presents a Stormwater Assessment for the Sycamore Tailings...

March 4, 2010

This tech memo provides a summary of Tetra Tech's findings related to predicted baseline regulatory (100-year) hydrology and average-annual runoff...

March 1, 2010

This tech memo compares the natural groundwater fluctuations of the system near the Rosemont property with the drawdown predicted by the hydrogeologic model.

WestLand has completed a preliminary jurisdictional determination pursuant to USACOE Regulatory Guidance Letter 08-02, of areas that may be considered by the ACOE as potential waters of the United...

This report further develops the Rosemont Ridge Landform and incorporates a variety of considerations such as controlling stormwater and erosion, addressing post-mining land uses, and...

 
AZ's economy gained almost $9.3 billion & 52,500 AZ residents had jobs in 2009 as a result of the combined direct & indirect contributions of the copper industry to...

February 17, 2010

Golder theoretically evaluated the erosion stability limits of 3 basic landform geometries to determine if it was feasible to engineer stable, natural-looking landforms from mine waste materials...

February 9, 2010

 
This review has been undertaken at the request of SWCA and the CNF. This memo provides comments related to a review of the report, Groundwater Flow Modeling Conducted for Simulation...

February 3, 2010

WestLand was retained by Rosemont to survey for agave and mature saguaros along approximately 22.4 linear miles of proposed water line.

February 1, 2010

Evaluation of the adequacy of existing kinetic and STLT data.

Upon cessation of mining, the local water table...

This investigation evaluates the environmental consequences of developing the Rosemont deposit, with a focus on the potential to impact...

Assessment of the degree to which results from geochemical testing represent overall tendencies.

The MODFLOW-SURFACT computer input tiles and Groundwater Vistas (GWVistas) files were also made available for review. There were three file sets available, including SteadyState, Trans_DRN, and...

January 28, 2010

This tech memo discusses the design of stormwater conveyance channels associated with the Dry Stack Tailings...

January 27, 2010

This technical memorandum discusses the selection of the hydrologic methodology/design storm criteria applied to the proposed Rosemont Copper Project (Project) in Pima County, Arizona. This...

January 26, 2010

This technical memorandum presents an assessment of the potential for leaching...

January 23, 2010

This tech memo provides a comparison between the MPO and the Partial Backfill Alternative facility layouts.

January 15, 2010

This tech memo provides a comparison between the MPO and the Barrel Only Alternative facility layouts.

This technical memorandum was prepared by Tetra Tech and presents a Noise Analysis for the Scholefield...

This tech memo provides a comparison between the MPO and the Sycamore Tailings...

January 14, 2010

This tech memo presents Tetra Tech's infiltration, seepage...

This tech memo presents Tetra Tech's infiltration and seepage...

WestLand Resources conducted a survey of 37 mining features within the Rosemont Holdings and vicinity to determine if they were being used as bat roosts.

January 12, 2010

The information and results in this Tech Memo are to show the results for using the Scholefield Canyon as the depository for the mine tailings...

The information and results in this Tech Memo are to show the results for using the Sycamore Canyon as the depository for the mine tailings...

This tech memo presents a traffic analysis for the Scholefield Tailings...

January 10, 2010

This tech memo presents a geochemical characterization fo the tailings...

This tech memo presents a geochemical characterization of the tailings...

This tech memo presents a geochemical characterization of the tailings...

This tech memo presents a geochemical characterization of the tailings...

January 9, 2010

This tech memo provides a comparison between the MPO and the Barrel and McCleary Alternative facility layouts.

This tech memo presents a traffic analysis for the Partial Backfill Alternative.

This tech memo presents a traffic analysis for the Sycamore Tailings...

January 8, 2010

This tech memo presents a traffic analysis for the Barrel Only Alternative.

This tech memo provides a summary of the anticipated colors of the final Open Pit walls at the proposed Rosemont Copper Project.

This tech memo provides a summary of the anticipated physical properties of the waste rock...

January 6, 2010

January 1, 2010

WestLand Resources was asked by Rosemont Copper Company to survey for Hexalectris colemanii on the entire “Rosemont Area” (all areas included in the Rosemont Mine Plan of Operations...

This Technical Memorandum documents the results of the predictive groundwater flow models prepared by Tetra Tech for the proposed Rosemont Copper Project (Project) located on the east side of the...

This tech memo presents a Stormwater Assessment for the Barrel Only Alternative being considered in the US Forest Service EIS for the proposed Rosemont Copper Project. This analysis quantifies the...

This document presents the information necessary for the Pima County Department of Environmental Quality (PDEQ) to process the Rosemont Copper Project application and...

The Rosemont Copper Project will employ modern practices for minimizing emissions to the extent practical. This includes utilization of control devices where feasible and fugitive control measures...

This tech memo provides a comparison for the stormwater monitoring data and Synthetic Precipitation Leaching...

This Technical Memorandum presents the results of 3 additional scenarios analyzed as a supplement to the April 2009 Traffic Study Report and their impact...

December 31, 2009

This technical memo presents a viewshed...

December 30, 2009

Rosemont plans to operate within the intent of Pima County Outdoor Lighting Code as long as mine safety and operations is not compromised. The entire mine site is regulated by the Mine Safety and...

December 21, 2009

As part of the baseline biological studies effort, WestLand has conducted surveys of the Rosemont Holdings and their vicinity for ranids, particularly the Chiricahua leopard frog.

December 18, 2009

WestLand Resources was retained by Rosemont Copper Company to survey for Pima Pineapple cactus along an approx. 22.4 linear miles of proposed waterline, including alternate routes, as part of the...

December 16, 2009

This tech memo presents a geochemical characterization of the tailings...

December 15, 2009

This tech memo presents a traffic analysis for the Barrel and McCleary Alternative.

December 4, 2009

 
This memo presents the findings of MWH's review of the development and simulation results of the numerical groundwater flow model for Rosemont Copper 

November 2, 2009

This technical memorandum summarizes the method used to composite samples tested for the Rosemont Copper Project geochemical characterization work. Over 200 composite samples of drill core course...

October 28, 2009

Montgomery & Associates developed a groundwater flow model designed to simulate conditions prior to pit development, during pit dewatering...

October 7, 2009

One focus of the geochemical testing program for the proposed Rosemont Copper Project in Pima County, Arizona has been the characterize the acid-base accounting...

September 17, 2009

As part of ongoing baseline biological studies, WestLand is conducting studies of Sonorella, including surveys to determine the distribution of Sonorella within and in proximity to the proposed...

September 10, 2009

This memo discusses the methodology behind the estimation of the Local and General Probable Maximum Precipitation (PMP) storm distributions for the Rosemont Copper Project.

The purpose of the test plot project is to evaluate different reclamation...

September 1, 2009

AMEC Earth and Environmental has reviewed the comments provided by Dale Ortman, which were received via email on August 17, 2009.

August 26, 2009

This report documents the technical performance of a transmission plan of service proposed by Rosemont.

July 1, 2009

An assessment which analyzed the current roadway geometry and safety conditions was completed along AZ-83 between Interstate 10 and State Route 82.

This report presents updated recommendations for the water supply facilities and project design criteria. Recommendations and design criteria are conceptual and should not be considered final.

 
Rosemont Copper plans to produce 250 million lbs of copper per year.  Rosemont will produce 8 million lbs of molybdenum and 3 million ounces of silver.

June 29, 2009

Viewshed...

June 25, 2009

This tech memo presents potential improvements for the current school bus stops along AZ-83. This memo also discusses the design criteria used for the improvements as well as the advantages and...

June 15, 2009

This tech memo presents two potential locations for wide load truck turnouts along SR 83. This memo also discusses the design criteria used for the turnouts as well as their advantages and...

June 5, 2009

In October 2008 WestLand Resources surveyed for Pima Pineapple cactus (PPC) along a 15.77-mile, 120-ft wide corridor for a proposed waterline between Sahuarita and Helvetia, Pima County, Arizona...

June 4, 2009

This tech memo presents design alternatives for the proposed Primary Access Road associated with the Rosemont Copper Project.

This tech memo presents design alternatives for the proposed Primary Access Road associated with the Rosemont Copper Project.

This tech memo presents design alternatives for the proposed Primary Access Road associated with the Rosemont Copper Project.

May 28, 2009

This tech memo summarizes the results of an infiltration analysis performed for the Rosemont Copper Project.

May 21, 2009

Additional investigations for the Phase 2 hydrogeologic characterization program for the proposed Rosemont mine, included a long-term multi-well aquifer...

May 11, 2009

This technical memo presents a summary of requirements for the Arizona state level designation of a Scenic Road. The requirements presented were taken from ADOT guidelines. This memo also presents...

May 7, 2009

This report presents detailed, permit-level design documentation for the leaching...

May 5, 2009

The objectives of this memo are to address questions related to acid rock drainage...

May 4, 2009

This technical memorandum has been prepared to demonstrate the Best Available Demonstrated Control Technology...

This tech memo presents the leach pad drain pipe sizing results for the Phase 1 and Phase 2 Heap Leach...

May 1, 2009

This report discusses the design of the Process Water...

April 30, 2009

Montgomery & Associates conducted groundwater flow modeling investigations for simulation of mine supply groundwater pumping from proposed locations near Sahuarita.  Investigations...

April 29, 2009

This memo provides the potential volume of stormwater run-off that will be captured by the Heap Leach...

April 27, 2009

This tech memo describes updates to the Arizona Department of Water Resources (ADWR) Tucson Active Management Area Model in the vicinity of Sahuarita and Green Valley.

April 24, 2009

Rosemont has authorized WestLand Resources to conduct a variety of baseline biological studies for Chiricahua leopard frogs within and in the vicinity of the Rosemont holdings.

April 1, 2009

March 24, 2009

To date, 4 samples of tailings...

March 11, 2009

Rosemont retained WestLand Resources to conduct a variety of biological studies to support special status species, such as the federally listed lesser long-nosed bat. The Palmer's agave has...

A detailed study of lesser long-nosed bats and their potential use of the Rosemont Property was undertaken with initial site visits in 2006, ultrasonic acoustic surveys in 2007 and 2008, and the...

WestLand Resources was retained by Rosemont Copper Company to survey for Pima Pineapple cactus along an approx. 15.77 mile long proposed waterline as part of the proposed Rosemont Copper Project...

February 26, 2009

In accordance with the Phase 2 hydrogeologic characterization program for the proposed Rosemont Mine, 27 groundwater wells and 3 multi-level groundwater piezometers were constructed in the...

February 1, 2009

This report presents information and supporting documentation required for an area-wide APP application for the Rosemont Copper Project.

This report presents an addendum to the 2007...

The report presents an addendum to the 2007...

January 20, 2009

The purpose of this memo is to document the calculations used to evaluate the level of engineering control achieved for various liner systems as part of the BADCT analysis for APP regulated...

January 1, 2009

WestLand has completed a preliminary jurisdictional determination pursuant to USACOE Regulatory Guidance Letter 08-02, of areas that may be considered by the ACOE as potential waters of the United...

This report addresses the detailed engineering of the Dry Stack ...

This memo was developed to solidify various design criteria for use at the Rosemont Copper Project site by various consulting groups. The goal of this analysis was to review info generated from...

This document presents an air dispersion modeling protocol that will be followed to assess impacts of emissions from the proposed new Rosemont Copper Project on Air Quality Related Values...

This document presents an air dispersion modeling protocol that will be followed to assess ambient air...

Rosemont plans to operate within the intent of Pima County Outdoor Lighting Code as long as mine safety and operations is not compromised. The entire mine site is regulated by the Mine Safety and...

A traffic analysis was completed to examine the existing traffic conditions along State Route 83 and to assess potential future traffic on AZ-83 asociated with Rosemont Copper Company's...

December 17, 2008

In a greenhouse study of ...

December 1, 2008

This tech memo describes updates to the Arizona Department of Water Resources (ADWR) Tucson Active Management Area Model in the vicinity of Sahuarita and Green Valley.

November 19, 2008

 
Reported results of the magnetic survey.

November 10, 2008

This memo provides an update of all acid-base accounting...

October 10, 2008

To date, 4 samples of tailings...

October 1, 2008

Tetra Tech proposed a study involving concurrent ambient noise monitoring at multiple locations within or near the proposed mining operations area and a preliminary evaluation of noise attenuation...

February 13, 2008

This memo describes current plans for implementation of the groundwater monitoring program for the Rosemont Project.

December 3, 2007

A preliminary evaluation of springs within the Rosemont Project Area has been completed by Errol L. Montgomery & Associates, Inc. (Montgomery) . The attached three tables and associated figure...

December 1, 2007

The area of southeastern Arizona surrounding the Santa Rita and Patagonia Mountains is home to spectacular landscapes, unique ecosystems rich in biodiversity, and a diverse, robust amenity and...

November 28, 2007

This memo summarizes the hydrologic analysis performed for the area along the north and south perimeter of the Rosemont Ridge Landform. This analysis was done in order to assess the potential...

November 20, 2007

Water rights data requested by CNF for MPO.

November 19, 2007

Forest Service requested data related to stream channels and flow characteristics near the Compliance Point Dam. In response to FS, field data, observations and a basic hydrographic survey of the...

November 1, 2007

This is an addendum to Tetra Tech's Baseline Geochemical Characterization Report presented June 2007.

October 30, 2007

CNF requested that Rosemont Copper Company provide information regarding which state that Augusta Resource Corporation is incorporated and the articles of incorporation.

August 24, 2007

The results of the feasibility study for the Rosemont Copper Project indicate that the project is technically and economically feasible. There are opportunities for further optimization, and the...

August 20, 2007

 
A report on the expected impacts of Augusta Resource Corporation's Rosemont Mine on personal income, business sales, and government revenues in Pima County, Arizona, and the...

July 25, 2007

July 6, 2007

The target of the Rosemont mine reclamation...

June 29, 2007

Viewshed...

June 12, 2007

This memo presents the results of liquefaction and slope...

June 1, 2007

Characterization of the tailings...

Geologic hazard assessemnt for the Rosemont Copper Project.

Presents groundwater protection concepts.

Presents the leaching...

This report estimates the soil salvage extents and volumes associated with the Rosemont operational areas. The estimates are based on Tetra Tech's Survey of Salvage Topsoil Resources Report...

Intent of the Site Water Management Plan is to demonstrate how storm flows and sediment...

This report estimates the soil salvage extents and volumes associated with the Rosemont waste rock...

This report provides an executive summary of the compendium of reports presenting the feasibility-level design of the Rosemont Copper Project aspects.

Specific objectives of the soil resources assessment included the following: describe soil profiles or pedons, and document soil characteristics; sample and analyze physical and chemical...

Augusta will manage materials on-site to minimize the amount of waste created and to ensure wastes do not become mixed, contaminated, or mismanaged.

May 10, 2007

This memo presents the results of seepage...

April 27, 2007

April 26, 2007

Augusta completed a 40-hole diamond drilling program on the deposit, consisting of resource, geotechnical...

April 23, 2007

Reported results of the geophysical investigation conducted at the project site.

July 26, 2006

Objectives of the field trip were to gain familiarity with the site characteristics including topography, surface water features, and geology; and to obtain available geologic information.

June 13, 2006

Washington Group was retained by Augusta Recource Corporation to prepare a preliminary assessment and economic evaluation of the Rosemont deposit.

June 5, 2006

This report presents conceptual design and cost estimates for the development of the Heap Leach...

June 2, 2006

Summarizes the sizing of the lined freshwater and contingency ponds and the unlined stormwater pond for the Rosemont Mine Siting Study.

June 1, 2006

Site investigation included borehole drilling, test pit excavating, surface geology mapping, field penetration and hydraulic testing, geotechnical...

April 20, 2006

Summary of geologic conditions is presented to provide an overview of conditions that can be expected with respect to design and construction of rockfill/earthfill embankments, heap leach...

February 15, 2006

Augusta carried out a 15-hole drilling program. The results of this drilling have been integrated with previous drilling conducted by other companies prior to Augusta's involvement, to...

January 1, 2006

Vector conducted an initial site selection study for a tailings...

June 3, 2005

About 570 holes have been drilled withing the Property and 4 skarn...

This report summarizes meteorological measurements collected at the Rosemont Copper Mine monitoring stations. The Rosemont Copper Mine is a new open pit copper mine proposed by Augusta Resource...