10 rosemont copper - a bridge to a sustainable future

Aquifer Protection

Agency CorrespondenceTITLE: Initial Hydrology for Rosemont Copper

OperationsRELEASE DATE: October 2009PREPARED BY: Arizona Department of Environmental

Quality

TITLE: Rosemont Copper Co NADS 1 090408RELEASE DATE: April 2009PREPARED BY: Arizona Department of Environmental

Quality

TITLE: Rosemont Copper Co RAIS 041410RELEASE DATE: April 2010PREPARED BY: Arizona Department of Environmental

Quality

TITLE: Incomplete Response to Substantive Deficiencies

RELEASE DATE: December 2010PREPARED BY: Arizona Department of Environmental

Quality

Aquifer Protection Permit ApplicationTITLE: Rosemont Copper APP Appl . Volumes . 1-4cRELEASE DATE: February 2009PREPARED BY: Tetra Tech for submission to ADEQ

Rosemont ResponseTITLE: Response to Notice of Administrative

Deficiencies Letter (Transmittal of documents requested in letter April 4, 2009)

RELEASE DATE: May 2009PREPARED BY: Rosemont Copper

TITLE: Incomplete Response to Substantive Deficiencies, Inventory Number 106100

RELEASE DATE: January 2010PREPARED BY: Rosemont Copper

Aquifer protection studies looked at the flow of water at the Rosemont project site to determine potential long-term impact on the quality and quantity of water in the area .

Aquifer Protection

10 rosemont copper - a bridge to a sustainable future

rosemont copper - a bridge to a sustainable future 11

Technical Response Part 1TITLE: Comprehensive Request for Additional

Information (Response to ADEQ)RELEASE DATE: July 2010PROVIDED BY: Kimberlite Water Quality Permitting and

Compliance ServicesBrief Summary: This July 2010 letter from Kimberlite

Water Quality Permitting and Compliance Services (Rosemont’s engineering consultants) responds to an ADEQ letter from April 2010 that made specific requests for additional technical information about the Rosemont operations. The April 2010 ADEQ letter was part of the technical review of Rosemont’s application for an Aquifer Protection Permit, submitted in March 2009.

TITLE: Site Water Management Update, Volumes 1 - 5RELEASE DATE: April 2010PREPARED BY: Tetra Tech

TITLE: Infiltration, Seepage, Fate and Transport Modeling Report

RELEASE DATE: February 2010PREPARED BY: Tetra TechBrief Summary: The projected amounts and quality of

water entering (infiltration) and leaving (seepage) three of Rosemont’s facilities have been thoroughly scrutinized. This report from Tetra Tech presents the results of infiltration and seepage, and fate (altered chemistry) and transport modeling for the proposed Waste Rock Storage Area, the Heap Leach Facility, and the Dry Stack Tailings Facility. Detailed laboratory studies and predictive modeling (including waste rock, heap leach residuals, and dry stack tailings residuals) for the three Rosemont facilities show that they will have little or no impact on the quality or quantity of water within the regional groundwater system. Another site-wide particle tracking model (fate and transport analysis) has been completed by Tetra Tech to confirm that these three facilities will not impact the regional system.

TITLE: Tailings GeochemistryRELEASE DATE: March 2009PREPARED BY: Tetra TechBrief Summary: Rosemont’s geochemistry studies

evaluated the potential impact to the regional aquifer from water emerging from the project site, especially from the Waste Rock Storage Area, Heap Leach Facility and Dry Stack Tailings Facility. This report from Tetra

Tech covers four samples of tailings material that were generated and tested for acid-generation capacity and release of metals. Tests conclude that water outflow will be no more acidic than present groundwater and concentrations of most specific metals were below detection in all of the samples. Overall, the geochemistry studies found little to no probability of pollution of the area aquifers.

TITLE: POC Well Diagram RPI-WSRELEASE DATE: July 2010

TITLE: Revisions to Figure 23 of APP ApplicationRELEASE DATE: July 2010PREPARED BY: Tetra Tech

TITLE: Rosemont Well Inventory UpdateRELEASE DATE: January 2010PREPARED BY: Tetra Tech

TITLE: Water Level Hydrographs 2007-2010RELEASE DATE: July 2010PREPARED BY: Montgomery & Associates

TITLE: Groundwater Level Contours and Depth to Water 2010RELEASE DATE: July 2010PREPARED BY: Montgomery & Associates

TITLE: Summary of Groundwater Level Measurements for Wells, Piezometers and Drill Holes

RELEASE DATE: July 2010PREPARED BY: Montgomery & Associates

TITLE: Site Surface Soils GeochemistryRELEASE DATE: January 2010PREPARED BY: Tetra Tech

TITLE: Surface Water Sample Sites, Cienega Creek and Davidson Canyon

RELEASE DATE: July 2010PREPARED BY: Montgomery & Associates

TITLE: Geochemical Sample Composite MethodRELEASE DATE: November 2009PREPARED BY: Tetra Tech

Technical Response Part 2TITLE: Attachment 1: Groundwater Flow Modeling

Conducted for Simulation of Proposed Rosemont Pit Dewatering and Post-Closure Revised Report

RELEASE DATE: August 2010PREPARED BY: Montgomery & Associates

TITLE: Attachment 2: Rosemont Groundwater Flow Model Summary

RELEASE DATE: August 2010PREPARED BY: Montgomery & Associates

TITLE: Attachment 3: SRK Consulting Technical Review of Montgomery’s 2009 Groundwater Flow Model

RELEASE DATE: August 2010PREPARED BY: SRK Consulting

TITLE: Attachment 4: Rosemont Geochemical Pit Lake Predictive Model Summary

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 5: Rosemont Area-Wide Fate and Transport and DIA Summary

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 6: Rosemont Infiltration, Seepage, Fate and Transport Modeling Report Update

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 7: Technical Review of Tetra Tech’s Feb . 2010 Infiltration, Seepage, and Fate and Transport Modeling Report

RELEASE DATE: April 2010PREPARED BY: SRK Consulting

TITLE: Attachment 8: Physical and Mechanical Properties of Tailing and Waste Rockfill Materials

RELEASE DATE: August 2010PREPARED BY: AMEC

TITLE: Attachment 9: Rosemont Tailing Geochemistry Sample Sources

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 10: Rosemont Heap Leach Design Responses

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

12 rosemont copper - a bridge to a sustainable future

TITLE: Attachment 11: Rosemont Flow-Through Drain Design Summary

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 12: PWTS Pond and Settling Basin Design Revisions

RELEASE DATE: August 2010PREPARED BY: M3 Engineering & Technology

TITLE: Attachment 13: Rosemont BADCT Analysis for the PWTS Pond

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 14: Rosemont Settling Basin BADCT Analysis

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 15: Rosemont Waste Rock Segregation Plan

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 16: Rosemont APP-Regulated Facility Locations

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 17: Rosemont APP-Regulated Facility Depth to Groundwater

RELEASE DATE: August 2010PREPARED BY: Tetra Tech

TITLE: Attachment 18: Non-Municipal Solid Waste Landfill Application Revised

RELEASE DATE: August 2010PREPARED BY: Civil and Environmental Consultants, Inc.

TITLE: Comprehensive Request for Additional Information RELEASE DATE: August 2010PREPARED BY: Kimberlite Water Quality Permitting and

Compliance ServiceBrief Summary: This report from Kimberlite provides

responses and supporting information to the remaining comments from the ADEQ April 2010 letter that contained 52 specific requests for additional technical information about the Rosemont project. The August 2010 letter includes the following supplemental

information:• Tetra Tech Groundwater Flow Model summary, dated

August 31, 2010.• Tetra Tech Geochemical Pit Lake Predictive Model

Summary, dated August 24, 2010.• Tetra Tech Area-Wide Fate and Transport and DIA

Summary, dated August 31, 2010.•Civil and Environmental Consultants, Inc. (CEC) Non-

Municipal Solid Waste Landfill Application, dated August 2010.