Anaconda - What’s happening at the Site?

Below is a brief overview of what is currently planned to happen at the Anaconda Copper Mine Site (ACMS) over the next three months. Following that, are highlights of what has been accomplished at the site over the past three months.

If you would like to see additional information added to this page or have any other suggestions, please email the NDEP ACMS team at acms[at]ndep.nv.gov.

This page is updated quarterly, or more often for specific accomplishments or activities. This page was last updated: March 1, 2021.

What will be happening in the next three months:

March:

ARC is scheduled to submit the Draft OU-7 HHRA/SLERA Report. The Draft HHRA/SLERA Report will contain the results of the human health and ecological risk characterizations associated with this OU. After the review period, NDEP will collate stakeholder and internal comments and provide direction to ARC on how to finalize the HHRA/SLERA Report. ARC will be required to address the comments and direction before the Final HHRA/SLERA Report will be approved.

ARC is scheduled to submit the Final OU-2 RI Report. ARC will be required to address the comments and direction before the Final RI will be approved.

ARC is scheduled to submit the Final Combined OU-4b, 5, & 6 RI Report. ARC will be required to address the comments and direction before the Final RI will be approved.

ARC is scheduled to submit the Final OU-4a BHHRA/SLERA Report. ARC will be required to address the comments and direction before the Final BHHRA/SLERA will be approved.

ARC is scheduled to submit the Final OU-1 BHHRA Work Plan (WP). ARC will be required to address the comments and direction before the Final BHHRA WP will be approved.

ARC is scheduled to submit the updated quarterly schedule, which will be posted on the NDEP Anaconda SharePoint site.

April:

ARC is scheduled to submit the Final OU-2 (Pit Lake) SLERA WP. ARC will be required to address the comments and direction before the Final OU-2 WP will be approved.

ARC is scheduled to submit the Final Combined OU-4b, 5, & 6 BHHRA-SLERA WP. ARC will be required to address the comments and direction before the Final Combined OUs BHHRA-SLERA will be approved.

May:

No documents are scheduled for submittal in May that require review and comments.

ARC is scheduled to submit the Annual Summary Report of RD/RA activities. This report does not require review and comments; it will be posted to the NDEP Anaconda SharePoint.

What was accomplished in the previous three months:

February:

No documents were received in February that required review and comments.

January:

No documents were received in January that required review and comments.

1/19/21: The Final Peripheral Areas Record of Decision (ROD 1A) was signed by NDEP and DOI/BLM. ROD 1A is the companion ROD to ROD 1; together they provide the legal framework for performing the OU-8 heap leach pad regrade and cover remedial actions that will commence later in Q2 2021.

December 2020:

12/08/20: ARC submitted the Draft OU-4b, 5, & 6 BHHRA/SLERA WP. The stakeholder review and comment period ended on January 25, 2021. The WP describes the evaluations necessary to properly characterize the risk to human health and the environment associated with the combined OUs. ARC will be required to address the comments and direction before the Final WP will be approved.

12/08/20: ARC submitted the updated quarterly schedule, which was posted on the NDEP Anaconda SharePoint site.

Construction Update- In August 2020, ARC completed Fluid Management System (FMS) upgrade remedial activities including the construction and lining of five new evaporation ponds for the containment of heap leach pad (HLP) drain-down fluids. The second phase of remedial action, encompassing the re-grading and capping of HLPs, is scheduled to begin in June 2021.

ACMS Schedule 

Chart depicting the Anaconda 12-Year Closure Schedule
Click on schedule to enlarge

 

Map of Closure Phases

Map of Closure Phases

 

Closure Schedule

 

 

Closure Schedule

 

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