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Columbia Ridge Recycling and Landfill

Your service

We are proud to serve commercial and residential customers in Oregon and Washington.

Our safe and environmentally sound facility provides you with:

  • Safe, professional, and reliable disposal services
  • Renewable energy generation through wind power, and other renewable technologies that convert waste and methane gas into electricity and clean fuel
  • Overlapping environmental protection systems that meet or exceed rigorous state and federal regulations

We accept:

  • Abrasive blast media
  • Filter cake
  • Agricultural wastes
  • Incinerator ash
  • Animal carcasses
  • Industrial and special wastes
  • Asbestos-containing material (friable & non-friable)
  • Medical waste (treated)
  • Auto shredder residue
  • Municipal solid waste (MSW)
  • Bio-solids petroleum
  • Contaminated soil
  • Construction and demolition (C&D)
  • Debris sludge
  • CERCLA wastes
  • Treated wood
  • Dredged wet sediments

We do NOT accept:

  • Appliances
  • Loose sharps
  • Batteries
  • Tires
  • Discarded vehicles
  • Used oil
  • Hazardous wastes

We provide these additional services:

  • Electronic waste recycling
  • Transportation services
  • Household recycling drop-off
  • White goods recycling
  • On-site rail spur

For information about hazardous waste disposal visit the Waste Management Chemical Waste Northwest page here.

Our community

Renewable energy

The energy plant at Columbia Ridge uses landfill gas to generate renewable energy as part of Waste Management's increasing focus on extracting value from waste. Gas collected from the landfill powers eight engines, which produce 6.4 megawatts of electricity. The electricity currently powers 5,000 homes in Seattle through an agreement with the City of Seattle.

Columbia Ridge also hosts a demonstration project to process household waste and convert it into a clean fuel, using a patented plasma gasification technology. The plant is owned and operated by InEnTec.

As well, Columbia Ridge is home to 67 wind turbines with the capacity to generate 100 megawatts. Future plans include 25 more wind turbines capable of producing another 50 megawatts.

Community partnerships and involvement

Columbia Ridge is proud to be an active supporter of community events and programs that make Gilliam County a strong and healthy place to live, work, and play.

Our most significant contributions focus on youth and education, including a college scholarship program for high school seniors from Arlington and Condon, as well as, strong support for 4-H and FFA.

We support early learning programs for preschool children in Arlington and Condon, the development of life skills through the Missoula Children's Theater performing arts program, local service organizations, and the Arlington and Condon chambers of commerce.

Facility details

Columbia Ridge Recycling and Landfill is part of the Waste Management Landfill Group.

Columbia Ridge is a modern Subtitle D. Landfill that accepts primarily municipal solid waste (MSW or household waste) as well as industrial and special wastes.

Containment design

Columbia Ridge has a multi-layer composite liner system that includes an engineered clay barrier and a 60-mil high-density polyethylene (HDPE) membrane to ensure that waste and wastewater (leachate) are contained and isolated from soil and groundwater. The site's dry climate and unique geology support superior environmental performance while the rural locale allows for a 10,000-acre buffer managed for agriculture and wildlife.

Groundwater monitoring

The site's geology and hydrogeology provide unique natural protections because the groundwater is approximately 200-feet deep and separated from the waste by low permeability soils. Groundwater is monitored at seven wells, both up-gradient and down-gradient of the waste disposal footprint.

Columbia Ridge uses sophisticated monitoring protocols to verify that its environmental protection systems are operating properly. Monitoring data gathered by the company and independent professionals is submitted to the Oregon Department of Environmental Quality (DEQ) and the US Environmental Protection Agency.

Landfill gas management

Columbia Ridge manages landfill gas to generate renewable energy, reduce emissions, and prevent odor. The system collects 4,700 cubic feet per minute of landfill gas through more than 80 wells. A portion of the gas is sent to an on-site energy plant, with the remaining gas managed by flares per federal requirements.

Leachate collection and treatment

The leachate collection and treatment system consists of a highly permeable gravel drainage layer covering the entire landfill base, with perforated pipes at low points to collect and route leachate to a double composite lined evaporation pond. It also includes a recirculation process that pumps leachate from the pond back into the landfill, to accelerate waste decomposition and enhance landfill gas production.