FAQ

Coffin Butte Landfill is located at 29175 Coffin Butte Road, Corvallis, OR 97330

Feel free to call us at (541) 745-5792. Monday-Friday from 8:00am to 5:00pm.

Coffin Butte Landfill is open Monday through Saturday 8:00am to 5:00pm. It is closed on Sundays and major holidays.

Of course! We welcome neighbors and others interested in learning more about our operations to take a tour of the facility. Please call (541) 286-3331 to arrange a time for a tour.

Coffin Butte Landfill rests on 740 total acres; currently there are approximately 500 acres dedicated to non-landfill operations with several hundred acres dedicated to wildlife and wetland habitat. Only 178 acres are currently permitted as landfill space.

A landfill provides an environmentally safe and secure location to dispose of solid waste that humans produce. By keeping these materials contained in a highly engineered, properly managed landfill, we are doing our part to protect the environment and the community.

Coffin Butte Landfill currently accepts up to 2,500 tons of waste per day.

We accept municipal solid waste (MSW); construction and demolition (C&D) materials, and other materials regulated by RCRA Subtitle D with the appropriate approvals for asbestos, contaminated soils, animal carcass, industrial process waste, railroad ties and treated wood products.

The waste that Coffin Butte Landfill accepts originates in Linn, Lincoln, Benton, Marion, and surrounding counties.

We have multiple environmental protection systems in place at Coffin Butte Landfill, including:

• An extensive liner system that serves as a protective layer between the waste we accept and the natural environment.
• A sophisticated landfill gas collection system featuring more than 300 landfill gas collection wells collects landfill gas throughout the site. The landfill gas is then routed through a system of vacuums and pipes to be used as alternative fuel or is transferred to a flare station, where it is safely destroyed.
• Our team employs best management practices to control storm water, including ponds and bioswales and a network of 38 groundwater monitoring wells.
• We have a post closure and funding plan to protect and monitor the landfill environment for a minimum of 30 years after closure. We will work closely with the Oregon Department of Environmental Quality and the host county on the closure plan.

We work closely with the Oregon Department of Environmental Quality (ODEQ) to ensure we are meeting all federal, state and local landfill regulations.

The Landfill engages our neighbors and community in multiple ways. Along with our community work, we host an annual open house, an annual lunch at the landfill for local elected officials, we have planted over 500 native trees, we are in regular communication with neighbors, we work closely with the County Solid Waste Advisory Committee and we partner with local universities on oak forest research and leachate treatment projects.

The Coffin Butte Landfill team takes multiple steps to control odors. We apply a daily cover over the garbage, we have an extensive landfill gas collection and treatment system, and we use geo-synthetic covers to help the gas system operate more efficiently. At our Pacific Region Compost site, we use a dry vapor system that neutralizes odors on site.

Once the Landfill is filled to capacity, a final landfill capping system will be installed that consists of a Geomembrane welded to the bottom liner geomembrane, an engineered soil liner, cover soils, and a vegetation layer. At that time the site could be used as an open green space, parks, wildlife viewing area, or nature trails. The site will also be maintained for an additional 30 years in post-closure care after the final closure. This care includes continued groundwater monitoring, leachate management, and compliance reporting until such time the Oregon Department of Environmental Quality approves the site for final closure.

Organic waste can decompose within months, while non-organic waste such as plastics and glass can take 450-1,000 years to fully decompose.

Recycling is handled both onsite at Coffin Butte and at Republic recycling depots in Corvallis and Albany. Each year we process approximately 54,000 tons of material for recycling to keep valuable resources out of the Landfill. We also participate in the Oregon e-cycles program and recycle over 350 tons of electronics annually to keep heavy metals out of the Landfill. Further, our Pacific Region Compost site processes more than 140,000 tons of residential yard debris, residential organics and commercial food waste into compost each year.