Bonner Data Center

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Project overview

Missoula County has received an application for a proposed data center facility to be located at the Bonner Mill site at 9314 Bonner Mill Road. The project is being reviewed through a Special Exception process because it is located near residential properties.

The proposal involves reusing a portion of the former mill building commonly referred to as the planer building for data center operations. This means most of the development would occur inside the existing structure, with no major expansion of the building footprint. Interior improvements would include constructing specialized rooms to house computer servers and supporting equipment.

The primary new exterior components of the project would be cooling systems to regulate equipment temperature. These cooling units, sometimes referred to as cooling towers, would be installed next to the existing building. According to the application, these systems would operate continuously to support the data center.

Data centers are facilities that store and process digital information and typically operate 24 hours a day with minimal on-site staffing. The applicant has indicated that after construction, traffic to and from the site would be limited to periodic maintenance and service visits.


Project process

The site is zoned Industrial Center, Heavy. A data center would be an allowed use on the property. However, Missoula County has additional zoning regulations that apply to data centers and cryptocurrency operations throughout the county. These regulations include:

  • All power for the operation must come from a new renewable energy source (meaning it has not been on the market yet)

  • The operation must recycle all electronic waste

  • Because it is located within 500 feet of a residential area, the proposal must go through a special exception review to ensure impacts to nearby properties are addressed, including traffic, noise, lighting, landscaping, and screening and buffering

Because the project is located near residentially zoned and developed properties, the County’s review is focused on how the data center and associated equipment may affect nearby residents. Key itemss under review include potential noise, visual impacts, lighting, and other operational characteristics of the cooling systems and equipment.

County staff are currently reviewing the application for completeness and have requested additional information from the applicant to better understand these potential impacts and how they may be mitigated. Once the application is deemed complete, it will proceed through a public review process, including opportunities for public comment.

The project will be subject to review by the Missoula County Consolidated Land Use Board, not the county commissioners. While the land use board at times only has authority to make recommendations to the commissioners, the board does have final decision-making authority in some cases, including zoning variances, zoning special exceptions and administrative action appeals.

The land use board has authority to approve or deny a proposal to locate a data center within 500 feet of residential use, but the applicant must still secure a zoning compliance permit from the County ensuring they meet the requirements to recycle e-waste and supply the operation with new renewable energy, as well as other zoning regulations, as required by the cryptocurrency/data center zoning, as well as all other zoning regulations for the property.


What’s next?

The consolidated land use board hearing is currently scheduled for Wednesday, July 1, at 6 p.m. The meeting will take place in person in the Sophie Moiese Room of the Missoula County Courthouse, 200 W. Broadway, and virtually via Microsoft Teams. The agenda and information on how to join the meeting virtually will be available online prior to the meeting.

The meeting date is subject to change if a complete application is not submitted in time for the June 3 meeting.

Community members are encouraged to stay informed and participate in the review process. Additional project materials and updates will be posted as they become available.

Project overview

Missoula County has received an application for a proposed data center facility to be located at the Bonner Mill site at 9314 Bonner Mill Road. The project is being reviewed through a Special Exception process because it is located near residential properties.

The proposal involves reusing a portion of the former mill building commonly referred to as the planer building for data center operations. This means most of the development would occur inside the existing structure, with no major expansion of the building footprint. Interior improvements would include constructing specialized rooms to house computer servers and supporting equipment.

The primary new exterior components of the project would be cooling systems to regulate equipment temperature. These cooling units, sometimes referred to as cooling towers, would be installed next to the existing building. According to the application, these systems would operate continuously to support the data center.

Data centers are facilities that store and process digital information and typically operate 24 hours a day with minimal on-site staffing. The applicant has indicated that after construction, traffic to and from the site would be limited to periodic maintenance and service visits.


Project process

The site is zoned Industrial Center, Heavy. A data center would be an allowed use on the property. However, Missoula County has additional zoning regulations that apply to data centers and cryptocurrency operations throughout the county. These regulations include:

  • All power for the operation must come from a new renewable energy source (meaning it has not been on the market yet)

  • The operation must recycle all electronic waste

  • Because it is located within 500 feet of a residential area, the proposal must go through a special exception review to ensure impacts to nearby properties are addressed, including traffic, noise, lighting, landscaping, and screening and buffering

Because the project is located near residentially zoned and developed properties, the County’s review is focused on how the data center and associated equipment may affect nearby residents. Key itemss under review include potential noise, visual impacts, lighting, and other operational characteristics of the cooling systems and equipment.

County staff are currently reviewing the application for completeness and have requested additional information from the applicant to better understand these potential impacts and how they may be mitigated. Once the application is deemed complete, it will proceed through a public review process, including opportunities for public comment.

The project will be subject to review by the Missoula County Consolidated Land Use Board, not the county commissioners. While the land use board at times only has authority to make recommendations to the commissioners, the board does have final decision-making authority in some cases, including zoning variances, zoning special exceptions and administrative action appeals.

The land use board has authority to approve or deny a proposal to locate a data center within 500 feet of residential use, but the applicant must still secure a zoning compliance permit from the County ensuring they meet the requirements to recycle e-waste and supply the operation with new renewable energy, as well as other zoning regulations, as required by the cryptocurrency/data center zoning, as well as all other zoning regulations for the property.


What’s next?

The consolidated land use board hearing is currently scheduled for Wednesday, July 1, at 6 p.m. The meeting will take place in person in the Sophie Moiese Room of the Missoula County Courthouse, 200 W. Broadway, and virtually via Microsoft Teams. The agenda and information on how to join the meeting virtually will be available online prior to the meeting.

The meeting date is subject to change if a complete application is not submitted in time for the June 3 meeting.

Community members are encouraged to stay informed and participate in the review process. Additional project materials and updates will be posted as they become available.

Let us know what you think by logging in or creating an account and submitting your comment below.

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These data centers are not good for our people or our environment. Please consider rejecting their permit.

Kat About 4 hours ago

I STRONGLY OPPOSE the proposed Bonner data center, and I urge the Missoula County Board of County Commissioners to deny this Special Exception application.

This project is fundamentally incompatible with the Bonner community, the surrounding environment, and the infrastructure that area residents depend on — and repackaging an industrial-scale operation inside an existing building footprint does not change that reality.

Groundwater. This is the most critical issue and the one that should be disqualifying on its own. Data centers require enormous volumes of water for cooling — often millions of gallons per year. The Clark Fork and Blackfoot River corridors, and the aquifer systems that feed them, are not an unlimited industrial resource. They support agriculture, wildlife habitat, and drinking water for area residents. Once depleted or compromised, groundwater cannot simply be restored. The county has an obligation to protect this resource for current and future generations, not subordinate it to a speculative industrial tenant.

Infrastructure mismatch. The Bonner area roads, utilities, and community services were not designed to support heavy industrial data center operations. The construction phase alone — and the ongoing maintenance traffic, electrical infrastructure buildout, and supporting logistics — will impose costs and impacts on neighbors who have no say in those burdens and no share in any economic benefit.

The Special Exception bar must be high. The fact that this proposal requires a Special Exception because it is located near residential properties is not a procedural footnote — it's the central issue. The Special Exception process exists precisely to protect communities like Bonner from incompatible uses. The burden should be on the applicant to demonstrate beyond doubt that this use will not harm neighbors, degrade water resources, or overwhelm local infrastructure. That burden has not been met.

This is not opposition to economic development. The Bonner Mill site represents a genuine redevelopment opportunity. But the right use is one that is scaled appropriately to the site, the infrastructure, and the community — not a hyperscale industrial operation that would generate massive external costs while delivering limited local benefit.

Please deny this application.

twmargot About 5 hours ago

No AI data centers in Montana

Lee Cox About 7 hours ago

I strongly oppose the proposed data center in Bonner.

After attending the first public forum, we all left with more concerns than answers. Community members raised legitimate questions about water use, energy demand, environmental impacts, noise, infrastructure strain, emergency preparedness, and long-term impacts to the Bonner community, yet every single one of these questions were not adequately answered. A project of this scale should not be moving forward while basic information remains unclear or unavailable to the public.

The lack of transparency throughout this process is deeply concerning. Meaningful public input requires actually providing clear, direct answers so the community can make informed comments and decisions. So far, that standard has not been met.

Montana’s Constitution explicitly protects our right to a clean and healthful environment. That includes responsible stewardship of our water and natural resources, especially as communities across the West face increasing pressures related to growth, drought, and infrastructure demands.

The Land Use and Planning Board has a responsibility not only to evaluate this project on paper, but to listen to the people who will live with its consequences. The overwhelming concern and opposition voiced by community members should not be minimized or treated as a procedural hurdle.

Until there is full transparency, complete answers to public concerns, and clear evidence that this project will not compromise local resources or community wellbeing, this proposal should not move forward. It is truly horrifying that this proposal is even being considered. If approved it will show that the values we claim to have here were never true and I will no longer be proud of being a Missoulian. If data centers are approved here my family will relocate out of state because what’s the point in staying when we can’t afford it and our local government won’t protect us or our resources?

WeAreWaterProtectors About 24 hours ago

At the first meeting in town at the church the company rep failed to bring with him a design engineer who could intelligently discuss the cooling system being vaguely described by the company publications. A "closed loop" system is great, but what's the cooling medium? Air cooled? Water cooled? What's the source of the water? Ground coupled? Dx chiller?

What is their anticipated annual domestic water consumption?

Will they be touching the river at all, in any way? That includes filling the cooling system or supplying cooling towers with water. That includes dumping anything at all into the river because "it's just water."

They were unable/unwilling to address these questions at the public meeting. These questions need answers.

LKJones 1 day ago

I am opposed to the proposed data center development in Bonner and urge decision-makers to carefully consider its long-term impacts on our community. Bonner is a small, rural area with limited infrastructure, and a data center represents an outsized form of industrial development that is incompatible with the character of this valley. These facilities place significant demands on power, water, and transportation systems that were never designed for such intensive use. Of particular concern is groundwater. Data centers often require substantial water resources for cooling, and in an area where groundwater is already finite and essential for residents, agriculture, and the Clark Fork/Blackfoot Rivers, this poses a serious risk. Once groundwater levels are depleted or contaminated, the damage cannot simply be undone.
In addition, the increased traffic from construction, ongoing maintenance, and supporting industrial uses would strain local roads and reduce safety for residents who rely on them daily. Development should be planned and scaled appropriately to ensure it benefits the community rather than overwhelming it. This is not opposition to all growth, but a call for growth that respects the limits of our infrastructure, protects our water resources, and preserves the rural nature of Bonner. A large data center fails to meet those standards and would permanently alter the community in ways that many residents do not support.

Joshua V 1 day ago

Removed by moderator.

User1001 2 days ago

Removed by moderator.

User1001 2 days ago

I am a 4th generation Missoulian born and raised. NO, we do not want a Data Center here. No we don’t care what supposed “opportunities” to the economy it will bring. No, we will not allow these companies or private equity conglomerates to pollute, drain, and destroy our homes. We will attend any meetings with said businesses to ensure they don’t come back here ever again.

That_Big_Buck 3 days ago

As stewards of the land in Missoula County, it would be incredibly irresponsible of the commissioners to approve this data center or any data center. In addition to ruining the River and the water supply for the residents, the noise has proven to impact animals. For instance chickens nearby data centers lay 50% less eggs, cattle, goats and sheep lose 30% of their body weight, horses and wildlife suffer from stress.

There are reports of the water sources near data centers turning milky white with massive erosion and dangerously high levels of metals including strontium. Wasn’t the area a superfund site? Millions of dollars were spent rectifying the polluted rivers and now a data center is being proposed which will be another disaster and create another superfund site.

Missoula County should be aware that all over the country data centers are being cancelled due to power shortages, Grid strains and supply chain issues, as well as massive pushback from residents.

We live in such a beautiful place. Please do the right thing and listen to your constituents and deny this data center. We do not have the right to pollute the water and take water away from residents just for greed and AI. We don’t have the right to subject wildlife and human life to the very negative affects of data centers.

Thank you for your attention to this very important issue for the residents of Missoula County and Montana, as well as wildlife and domestic animals.

EIannacone 4 days ago

Please, please, please reject this proposal. I can’t even believe we have to submit comments on this. This would be a disaster. An absolute disaster for Montana and the entire surrounding areas. These centers put a significant strain on energy, water, infrastructure, environment, and quality of life. Costs can offset gains. They have a high electrical demand and can consume power equivalent to tens of thousands of homes, straining grids driving up demand for new plants/transmission lines, raising rates for residence as costs are passed on. Utilities sometimes negotiate favorable deals with data centers shifting burdens to households. They use millions of gallons of water daily for evaporative cooling depleting, local supplies and straining well/aquifer. Much water is lost to evaporation. They emit pollutants linked to respiratory issues. They create 24/7 noise. They are disproportionate burden in rural, low income communities. it would be so devastating to the people of Bonner, missoula County and the beautiful state of Montana for the county commissioners to approve this data center or any data center in the surrounding area/county. We all already have huge tax burdens and the amount of new apartments being built is irresponsible as it is.

DShaw 6 days ago

I urge the Missoula County Consolidated Land Use Board to reject this proposal. Data centers are already causing irreparable damage to the environment and human lives across the country. We cannot allow the same to happen to our county.

There are already communities living within 500 feet of a data center (such as the proposed Bonner Data Center) that are experiencing a significant decrease in quality of life. Communities near such data centers have experienced a loss of access to clean drinking water, increased health problems from air pollution including premature deaths, and an increase in anxiety from the constant drone of the data centers so severe they can no longer sleep or feel safe in their own homes, even after moving to the basement and putting on noise canceling headphones.

According to the American Public Health Association, “chronic noise, even at low levels, can cause annoyance, sleep disruption, and stress that contribute to cardiovascular disease, cerebrovascular disease, metabolic disturbances, exacerbation of psychological disorders, and premature mortality,” along with many other health risks.

Research done by the Environmental Data & Governance Initiative has shown that “communities within one mile of data centers not only tend to be disproportionately communities of color—relative to the national median—but also face particulate matter, nitrogen dioxide, and diesel particulate matter levels above the national median.” Research also estimates that as much as 90% of air pollution related health impacts come from fine particulate matter, and has also been shown to contribute to premature deaths in the impacted regions.

Data centers not only put our health at risk, they also increase the cost paid by costumers to power their houses. A report by the Brookings Institute has shown that “electricity costs have outpaced inflation, increasing by 42% since 2019, while overall Consumer Price Index (CPI) has only risen by 29%.” According to their report, data centers push up residential electricity prices due to the amount of electricity they consume, which requires new generation, as well as new infrastructure to transmit that energy.

Data centers don’t help create jobs either. Most of the jobs they create are for their construction but not their long-term use, making them temporary. For the amount of land they take up, data centers employ very few people, anywhere from twenty employees to one hundred-fifty for the larger data centers.

On top of community harm, data centers are also very resource intensive. A study by the Lincoln Institute has show that large data centers consume as much water every day as a city of 50,000 people, they use as much energy as a large city, and take up hundreds of acres. Even if these data centers use reclaimed water, and not local drinking water, that water is not going back into the rivers and streams. Even small data centers can be incredibly taxing to their surrounding environment.

In a time of where more and more people are struggling to make ends meet, where the health of our environment is rapidly declining, and where big tech companies and billionaires are profiting off of the systematic abuse of the American people by failing to pay us livable wages, we don’t need more data centers. We need renewable energy, clean water, affordable housing, access to food, and healthcare that doesn’t bankrupt us. In fact, the Pew Research Center has a report stating only 17% of US adults in 2024 said they believe AI will have a positive effect on the US over the next twenty years.

The Montana Constitution clearly states that: “All persons are born free and have certain inalienable rights. They include the right to a clean and healthful environment.” The right to a clean and healthful environment is one of our inalienable rights. That is one of many reasons why I oppose the construction of the Bonner Data Center.

I graduated from the University of Montana with a degree in Environmental Studies. I know first hand how overburdened our environment already is. AI, regardless of what it can do for us, should not come at the cost of our rivers, communities, and breathable air.

AI isn’t dangerous because it’s evil, it’s dangerous because we’re choosing to ignore the true cost of it. We simply cannot afford to build more data centers that overtax our ecosystems without regulation or restraint if we want to avoid climate disaster. We must either find ways to build sustainable data centers without using trade-offs to skirt around environmental responsibility and local harm, or we must not build them at all.

AI has never generated anything that could compare to the beauty of the Treasure State, and it never will. We don’t want more AI slop. We want a livable world. That is why I cannot in good conciseness stand by and do nothing while more data centers are built knowing their true cost and the fact that it is the generations who come after me that will bear the brunt of it.

This land would be better put to use as a place for renewable energy generation, or a community garden. Let the community near this land and the Indigenous people who have been here since time immemorial decide how to use this land—not big tech companies that will always chose profit over the people of this world and the planet we live on.

Thank you for your time.

Resources:
-American Public Health Association: Noise as a Public Health Hazard
-Brookings Institute: Confronting and addressing rising energy bills linked to data centers
-Environmental Data & Governance Initiative: Communities Close to EPA-Regulated Data Centers Face Heightened Air Pollution
-Lincoln Institute: Data Drain: The Land and Water Impacts of the AI Boom
-Pew Research Center: How the U.S. Public and AI Experts View Artificial Intelligence

ALB 8 days ago

I’m concerned about the data center cooling system. As noted previously by “Ben C.” the expected use of the “closed loop cooling system” will have a minimal water requirement, all drawn from the on-site water well. However, the periodic flushing of the coolant will potentially release hazardous chemicals. Neither the County Land Use Board Zoning Special Exception Review nor the County staff Zoning Compliance Review is enabled to address this potentially serious contamination. During their Zoning Compliance Review, County staff should request the engagement of the Missoula Valley Water Quality Board and/or the Missoula County Health Department to identify the chemicals in the coolant and recommend safe disposal, which could possibly mean transporting it offsite to an acceptable waste repository. Any County approval that does not address the disposal of waste coolant would be inadequate.
Gary Matson

Gary Matson 8 days ago

I vehemently urge Missoula County Planning to reject this proposal. This data center offers no benefits to the community and has the potential to cause irreparable financial and environmental harm.
1) No employment: Data centers employ very few people. We need an industry in Bonner that can offer employment opportunities for the community.
2) Noise: Data centers generate low frequency noise. Studies have concluded low grade noise leads to detrimental health consequences.
3) Increased utility prices for the rest of us. Their promise to “buy renewable energy” is an accounting term and not a direct supply. Companies meet renewable requirements through energy credits or contracts, not by directly powering their facility with new local clean energy.
4) Water use unsustainable - Water contamination and use in an area with a limited water table. They consume and pollute too much water.

Anaconda 10 days ago

The reason it goes in there is so they can pull thousands of gallons of water from the Blackfoot, to cool the equipment in use…. ABSOLUTELY NOT! Leave our rivers alone and go somewhere else.

GRII 10 days ago

Please understand that the losses to our environment and in particular the river ecosystem that will be forever adversely altered, can’t be undone. What AI has to offer us is minuscule when compared to what will be lost in our Montana way of life, by the money grab of a few. Say NO to this data center

LW406 11 days ago

Data centers all over thr us, more than 50% failed to even get built. Its a gut check and shotgun spread. They're trying to see what sticks where. Apathy is not an option in this scenario. We need clean water more than we need AI slop. The building owner needs to consider other venues, perhaps a farmers market or flea market for time being.

Technician 14 days ago

I absolutely do not support an AI facility at the confluence of the Clark Fork and Blackfoot Rivers. We have no need to endanger another waterway for absolutely nothing but greed. Our Montana constitution mandates protection of our water. To give vague information regarding long term impacts to our water is a joke. No good will come of this facility. Protect our small community. Do the right thing Missoula, keep AI facilities out of Missoula and the rest of our small towns.

Ford 15 days ago

Upon attending the most recent Bonner city council meeting and hearing from some of the folks with the land use board and the Dept of health (?), it is abundantly clear how unequipped Montana and Missoula county are to handle proposals for AI data centers without federal and state regulations.

There are too many unknowns due to lack of research on AI centers and a dearth of information from Krambu themselves, for our land use board to feel comfortable with approving this project. It is unnerving to hear that a project may still be approved as long as it falls within the confines of zoning laws when our county government and officials know how deeply unpopular this development would be. It is doubly unnerving for the remainder of our state, that a progressive county with strict zoning laws may still allow a data center to be built. I fear that this would lead to a proliferation of AI centers along with those planned or proposed in Butte and Broadview.

It is also extremely disappointing to know that the public will essentially be unable to hold the commissioners, the land board, or our politicians accountable for something that is deeply unpopular with the vast majority of people if they were to approve the data center.

Mckayla McNamara 15 days ago

I am absolutely against this project for all the aforementioned reasons and would further suggest Missoula Co. implement conservation standards that would prevent similar project proposals in the future. We should not have to keep fighting the same battles to protect our natural resources!

WKA1999 15 days ago
Page last updated: 30 Apr 2026, 01:12 PM