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Chemical Waste Management of the Northwest
CWM has operated in rural Oregon since 1976, providing treatment and safe disposal for industrial and hazardous waste. The facility is permitted as a Subtitle C landfill under the Resource Conservation and Recovery Act (RCRA) with oversight from the EPA and the Oregon Department of Environmental Quality (ODEQ). RCRA is the principal federal law governing the disposal of solid waste and hazardous waste.

The facility is engineered with overlapping environmental protection systems that meet or exceed rigorous state and federal regulations. Designed and operated under highly regulated and prescribed procedures, CWM is engineered to protect surface and groundwater. The landfill is also subject to highly regulated monitoring and reporting requirements, to regularly verify that environmental protection systems are operating properly.

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Facility Facts
  • Number of employees: 55

  • Current landfill size: 22 acres

  • Buffer surrounding the facility: 11,000+ acres

  • Life remaining: 30+ years
Landfill Environmental Protection Systems

The CWM Landfill is engineered with overlapping environmental protection systems that meet or exceed rigorous state and federal regulations. The facility is double-lined throughout the landfill and triple-lined at the lowest area. The primary, secondary and tertiary liners are made of different materials including 60 mil High Density Polyethyline (HPDE) and geosynthetic clay (geotextile and bentonite composites). The site also includes a state-of-the-art leachate collection system and groundwater monitoring wells.

Landfill Environmental Protection Systems

If you have questions or need more information, please e-mail us at landfill@wmnorthwest.com.

17629 Cedar Springs Lane
Arlington, OR 97812

FAX 541-454-3247

Hours of Operation

Monday through Friday
7 am to 3:30 p.m.

Saturday & Sunday Closed
(subject to change)

Trucks should arrive by 3:30 pm for processing, and by 3 pm for stabilization

Site Type and Services

RCRA/TSCA Subtitle C Landfill

  • Hazardous Waste Treatment and Disposal
  • Stabilization
  • Solidification
  • Spent Potliner Treatment
  • Micro/Macroencapsulation
  • Solar Evaporation
  • Reactive Metals Treatment
  • PCB Drain and Flush
  • PCB Storage
  • PCB Solid Landfill
  • Bulk Storage
  • Drum Storage/Transfer
  • Rail Served
  • Single point of access, perimeter fencing
  • US EPA Part B Permit # ORD 089 452 353
Acceptable Material
  • CamU eligible materials
Unacceptable Wastes
  • Explosives
  • Radioactive
  • Infectious
  • Biological
  • Etiological
  • Septic Sludge
  • Animal Carcasses

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