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FAQ regarding Pebble mine and Pebble Watch

(updated Nov. 14, 2013)

About the proposed Pebble mine

What people think about the project

Salmon and the proposed Pebble mine

Science and the proposed Pebble mine

About permitting

About the U.S. Environmental Protection Agency Watershed Assessment

About Bristol Bay Native Corporation

About Pebble Watch 

 

About the proposed Pebble mine

Where is the Pebble deposit located?

The mineral deposit is located in the Bristol Bay region in Southwest Alaska, near Lake Iliamna and Lake Clark. It is in a remote area, near the headwaters to tributaries of both the Nushagak and Kvichak rivers.

Test samples from the Pebble deposit have shown copper, molybdenum and gold. Pebble officials have said at least three deposits have been found. They have offered the following estimated sizes for two of them:

  • Pebble West has 569 million tons of ore identified in the “measured and indicated” categories (sampling-based estimates that are considered to be accurate with a reasonable-to-high level of confidence). Another 143 million tons are “inferred” (or estimated at a lower level of confidence).
  • Pebble East has about 1.52 million tons of “inferred” ore.

The minerals are worth an estimated $400 billion, mine officials have said.

What companies are pursuing development of the Pebble prospect?

Pebble Limited Partnership (PLP) is the developer of the proposed mine project. Formed in 2007, the PLP is a U.S.-registered company based in Anchorage, Alaska. It was a 50-50 partnership between global mining company Anglo American plc and Northern Dynasty Minerals Limited of Canada. In September 2013, Anglo-American announced its decision to withdraw from the project within 60 days. Mining company Rio Tinto holds 19 percent of Northern Dynasty shares and by extension is also invested in the Pebble project. However, in December 2013, Rio Tinto announced that it would be reviewing its holdings in Northern Dynasty, with the potential of divesting from the company.

Who owns the land that the Pebble mine claims are on?

The state of Alaska owns the lands on which the Pebble project has staked mining claims. This state-owned land is located within the Lake and Peninsula Borough in Southwest Alaska, about 17 miles northwest of the village of Iliamna, and it neighbors the lands of many different owners, including both village and regional Native corporations. In total, the Pebble Limited Partnership holds mineral rights to 186 square miles of lands surrounding the Pebble deposit. Other nearby communities include Newhalen and Nondalton.

Does any portion of the proposed Pebble mine project involve lands owned by Bristol Bay Native Corporation?

No portion of the mining claims is on land owned or managed by BBNC. A February 2011 document that Northern Dynasty Minerals Ltd. released to the public shows a proposed transportation corridor crossing BBNC land. Assuming a need to transport materials from mine to port, it is reasonable to expect a future plan would involve similar road construction. View land ownership map.

How many jobs might the Pebble development create, and will they go to local residents?

PLP estimates that the project would need about 1,000 full-time employees for the first 20 to 25 years of mine operation. According to its website, the Partnership was creating a workforce development plan to meet its goal of filling positions from within the region.

Is there a mine plan?

Under the current permitting process, PLP is required to file an official mining plan with the state before permitting for a new mine could begin. 

Although mine developers have announced release dates several times in the past, as of fall 2013, an official mining plan had not yet been filed nor otherwise been made publicly available. And, after Anglo American’s September 2013 announcement withdrawing from the project, the remaining investor, Northern Dynasty Minerals Ltd., said it would once again review the release schedule.

Two published documents provide some detail about the potential size and scope of the proposed mine:

  • 529-page Preliminary Assessment (32 MB PDF) released to Northern Dynasty Minerals Ltd. investors in February 2011 offers some preliminary mine development plans. The study includes information on mining types (open pit and underground); infrastructure needs, such as port site, access roads, warehouses and water systems; and tailings impoundment designs. View map of preliminary mine site layout.
  • The U.S. Environmental Protection Agency published a draft Bristol Bay watershed assessment (the final is expected by end of 2013) that examines a conceptual mine based largely on information in the Northern Dynasty Preliminary Assessment.

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What people think about the project

Why is this mine so controversial?

The location of the deposit, near the headwaters of the Nushagak and Kvichak rivers, is the source of about half the world’s sockeye salmon harvest, according to studies conducted by the University of Alaska Anchorage. The proposed Pebble mine has entered national debate due to potential perceived risks to salmon fisheries used by commercial, subsistence and sport fishers. Mining opponents believe the mine’s potential economic benefits do not outweigh its risks to the region’s fish, wildlife and the people who depend upon them. Project supporters either believe the risks are acceptable or that any such risks could be adequately mitigated, and are worth taking in exchange for the potential economic benefits.

Why are some groups in favor of developing the Pebble mine?

Aside from the billions of dollars worth of minerals to be mined, project proponents generally highlight the benefit to the local, state and national economy. In 2013, PLP published an economic impact report projecting potential benefits. They also note high global demand for copper, as well as its importance in green technologies, such as wind turbines and electric cars.

Why are some groups opposed to the Pebble mine?

Many groups and individuals believe that development of a large-scale mine in the Bristol Bay watershed will cause damage to the environment and harm the fishery. Negative impacts to wildlife and Native cultures have also been raised as a concern. In an independent poll conducted in 2013 by Hays Research Group, nearly 63 percent of voters polled were in favor of a 2014 ballot initiative that would prohibit mining in Bristol Bay.

Are the people living in Bristol Bay opposed to the mine?

A 2011 Dittman survey of Bristol Bay Native Corporation shareholders commissioned by BBNC found that 81 percent are opposed to the mine. In a separate poll of Alaska voters, conducted in 2011 by Strategies 360 and commissioned by BBNC, 54 percent of respondents statewide had unfavorable views of the project.

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Salmon and the proposed Pebble mine

How might the proposed Pebble mine affect salmon runs and habitat?

Just what impact a large mine project such as Pebble would have on Bristol Bay salmon fisheries has been the subject of considerable debate. Concerns have been raised over possible impacts from such changes as new road construction crossing salmon streams, or mine operation activities — such as use of local water and tailings disposal — that could harm fish or fish habitat.

The Pebble Limited Partnership (PLP) has said the existing permitting process – informed by data from its Environmental Baseline Document (EBD) – would adequately predict potential impacts and protect salmon and habitat.

EPA's final Bristol Bay Watershed Assessment, concluded that even under day-to-day operations, a large-scale mine such as the proposed Pebble mine would cause inevitable impacts, including the loss of fish-supporting streams.

Sources for further reference

  • PLP Environmental Baseline Document – Chapter 15, “Fish and Aquatic Invertebrates,” provides baseline data with descriptions of fish and habitat in the North Fork Koktuli River, South Fork Koktuli River and Upper Talarik Creek watersheds, but does not predict potential impacts.  Read the study.
  • Keystone Center science panel – “Fisheries and Marine Ecosystems.” In October 2012 the nonprofit Keystone Center conducted a science panel that included a focus on fish in Bristol Bay. The panel consisted of independent scientists who commented on the work presented in PLP’s EBD, and questioned whether fish populations are characterized well enough in this area. Watch video of this session.
  • U.S. Environmental Protection Agency’s Bristol Bay Watershed Assessment – EPA has published the final version of this document, which focuses on how large-scale mine development such as Pebble could affect the waters and fish in the area. The assessment concludes that mine development would impact fish negatively, through the loss of streams and wetland habitat and potential affect on water quality. Executive Summary (published January 2014).

How will the public be able to comment on concerns about salmon?

As far as the official permitting process is concerned, it is unclear when the public might preview and respond to potential impacts on salmon runs and habitat. Permits related to protecting salmon include the Fish Habitat Permit and Fish Passage Permit, neither of which allow for public comment. However, thousands of people commented on impacts to salmon during EPA’s public reivew of its Bristol Bay Watershed Assessment.

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Science and the proposed Pebble mine

What is the Environmental Baseline Document (EBD)?

In January 2012, the Pebble Limited Partnership released its EBD, presenting data collected in and around the Pebble deposit area and transportation corridor. This EBD contains thousands of pages of information and data about the physical, biological and human environment in Bristol Bay and Cook Inlet study regions.

PLP has called the EBD the “cornerstone” of the permitting process. This is likely because it includes many of the same topics and data that would appear in an Environmental Impact Statement (EIS), the document used by government permitters to review proposals before mine permits are granted. However, an EIS would also include other components, such as an analysis of how the mine plan would impact the environment, and a range of alternative actions that would cause fewer impacts. Baseline data such as that included in the EBD is also typically used to support engineering designs as a mine plan is being formulated. Read the Pebble Watch Explores EBD guide for an overview. Find the original EBD here.

What is the Keystone Center?

Keystone is a nonprofit organization based in Keystone, Colo. It was engaged by the Pebble Limited Partnership to conduct an independent stakeholder assessment and science panels on the proposed Pebble mine. As part of the panels, third-party scientists reviewed and commented on environmental baseline studies conducted by PLP. Despite its funding, Keystone has maintained that it is independent. Proceedings of panels organized by Keystone in October 2012 and May 2013 are available to view online. A final panel focusing on the mine plan itself was proposed by Keystone, but may not occur due to lack of funding since Anglo American has withdrawn from PLP.

How do we know that the science is adequate to create a mine plan?

The question of sound science is at the forefront of the Pebble debate.

The main scientific documents available so far that are associated with the Pebble project — PLP’s EBD and EPA’s Bristol Bay watershed assessment — have both been challenged publicly, and their accuracy has been a matter of public debate.

Environmental impacts can only be understood by accurately assessing current conditions and predicting how those conditions might change due to development.

The EBD is a collection of multiple scientific studies (conducted by 40 different companies and research firms) that describe current environmental conditions. Portions of the document have been reviewed by independent scientists through the Keystone Center’s dialogue process, with specific recommendations for further study. PLP has stated that it will take into account some of these recommendations.

The EPA watershed assessment went beyond characterization of the environment to include discussion of the potential risks of large-scale mining. A 12-member review panel studied two drafts of the assessment and provided specific recommendations to EPA. The agency took those into consideration in preparing the final document, and has published its response to the comments.

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About permitting

How does the permitting process work?

Developers would need dozens of separate permits (local, state and federal) to begin construction and operation of a large-scale mine in Bristol Bay. The state of Alaska Large Mine Permitting Team coordinates state permits. The U.S. Army Corps of Engineers would be the lead agency to write an Environmental Impact Statement (EIS) to assess risk of the development.

What is an Environmental Impact Statement (EIS)?

An EIS is required under the National Environmental Policy Act (NEPA) for any project that might significantly affect the environment. An EIS is a decision-making tool. It lays out both positive and negative environmental effects of a proposed action. Every EIS includes alternative actions, including the impact of a “no action alternative.”

How long does permitting take?

It is expected that the permitting process would take about three years.

How can I keep current on the status of the permitting process for the proposed Pebble mine project?

Pebble Watch will post this information on its Resource pages as it becomes available. Current resources include our permitting timeline graphic and a permitting matrix.

I have an opinion on the mine and would like to share my concern/support. How do I make my voice heard?

Permitting – There are dozens of permits necessary for development of the proposed Pebble mine, and some of them offer public comment periods. Pebble Watch will track and post on our calendar information on public comment periods as they are scheduled.

U.S. Environmental Protection Agency Watershed Assessment – The EPA published a draft of its watershed assessment in May 2012 and held several community meetings to solicit input. A second draft followed in April 2013, along with a second public comment period. Visit the EPA Bristol Bay web site for a link to the full final report and other information.

Developers – To express concern or support to Pebble Limited Partnership, you may use this form located on its website.

Pebble Watch – Various resources at this site can help answer your questions, including a permitting timeline and  permitting guide with links to various state and federal agencies. You may also send your specific questions to the Pebble Watch team at This email address is being protected from spambots. You need JavaScript enabled to view it. This email address is being protected from spambots. You need JavaScript enabled to view it. .

Bristol Bay Native Corporation – Contact the BBNC Land Department by calling (800) 426-3602, or use this contact form.

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About the U.S. Environmental Protection Agency watershed assessment

What is the U.S. Environmental Protection Agency (EPA) Bristol Bay watershed assessment?

In February 2011, the EPA announced plans to conduct an assessment of the Nushagak and Kvichak watersheds in Bristol Bay, to determine the impact of large-scale development in the area. The first draft of the watershed assessment was released to the public in May 2012, with a second draft published in April 2013. A final document was published in January 2014.

Visit the EPA Bristol Bay website for details, updates and EPA contact information.

Why did EPA conduct a watershed assessment?

In 2010, several tribes and organizations asked EPA to step in and use its Section 404(c) authority under the Clean Water Act to limit development in Bristol Bay. Before acting on such a request, EPA chose to conduct the watershed assessment. EPA has stated that the assessment will inform any action it may take, and that it may not take action at all.

How can EPA affect development of the Pebble mine?

The Clean Water Act is federal legislation that helps protect U.S. waters. Under the act, a Section 404 permit is required when a developer plans to discharge dredged or fill material into the waters of the United States, including special aquatic sites such as wetlands. The U.S. Army Corps of Engineers issues these permits. However, the EPA also has authority under the act to veto such a permit before the permit application is submitted, while it is pending or after it has been issued, if the agency determines the discharge will have “unacceptable adverse impacts on water supplies, shellfish beds and fishery areas, wildlife or recreational areas.”

What action has Bristol Bay Native Corporation asked of EPA regarding the proposed Pebble mine?

BBNC has asked EPA to implement specific performance standards that call for prohibiting discharge of dredge or fill material:

  • that would enter salmon spawning or rearing habitat,
  • that fail testing requirements to demonstrate that the material is not toxic to aquatic life; or
  • that would create runoff or seepage requiring treatment into perpetuity.

For more information about BBNC and its views, visit the corporation’s website.

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About Bristol Bay Native Corporation

Why is Bristol Bay Native Corporation (BBNC) involved?

The proposed Pebble mine is located within the Bristol Bay region, and would directly affect BBNC shareholders.

BBNC’s Board of Directors adopted a position against the mine. Why is it producing Pebble Watch as an impartial information source?

Many other sources exist that provide opinions or advocacy for and against the mine. According to BBNC, its position against development of the Pebble mine was based on science and was made after careful consideration. Pebble Watch was created to help shareholders and others educate themselves, to assist with research and questions, and to promote openness in information about the proposed mine and any related public processes. It was also created to provide a forum for civil discussion and exploration of this challenging topic.

Is BBNC against all development in Bristol Bay?

No. BBNC’s land management policy draws upon Responsible Resource Development standards for social, environmental and fiscal sustainability.

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About Pebble Watch

Who publishes Pebble Watch?

Pebble Watch is a project of the Bristol Bay Native Corporation’s Land Department.

Who is the ‘Pebble Watch team'?

The Pebble Watch team includes scientists and science outreach communicators with expertise in finding and understanding scientific data, as well as experts in land management and permitting – most of whom are employees of BBNC and its subsidiaries. If we do not know an answer, we will research it and provide the best available answer. We hope you will consider our team to be a resource shareholders can use when you are having difficulty finding the data or answers you need.

Does Pebble Watch oppose the proposed Pebble mine?

As an impartial, educational and fact-based initiative, Pebble Watch neither supports nor opposes development of Pebble mine. The purpose of Pebble Watch is to help BBNC shareholders and other interested parties stay up-to-date on the Pebble project's development and permitting process, including how to access and understand available resources and scientific data. Pebble Watch does not seek to reflect current BBNC Board or corporation views. For those purposes, the corporation will continue to use methods such as press releases and its website to communicate to shareholders and the public.

What is the goal of Pebble Watch?

Scientists are not always in agreement when it comes to the proposed Pebble mine. Sifting through data, reports and peer review recommendations requires a basic knowledge of scientific terms and concepts that most non-scientists do not have.

Through publications, posts and educational materials, Pebble Watch seeks to provide summaries and overviews of these materials, so that readers can get the basics, know where to search for additional resources, and begin to formulate their own questions for study authors. In this way, they can join the scientific conversation that will ultimately affect the future of large-scale mining in Bristol Bay.

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About Pebble Watch

Pebble Watch is an impartial, educational and fact-based initiative of the BBNC Land Department to disseminate information regarding the proposed Pebble Mine project to BBNC shareholders and interested parties. 

Produced by
the BBNC Land Department

Questions? Call
(800)426-3602