Used Oil Dust Suppression and You

The Montana Department of Environmental Quality (DEQ) has adopted regulations for the management of used oil.  The following regulations address the use of used oil as a dust suppressant.

  • Used oil may not be used as a dust suppressant on any publicly owned road, street or alley, or within 200 yards of such roadways.
  • Used oil may be used as a dust suppressant only if all the following conditions are met:
    • The used oil must be generated by a household 'do it yourselfer' or farmer/rancher.
    • The used oil may only be used as a dust suppressant on land owned or leased by the 'do it yourselfer' or farmer/rancher.
    • The land owned by the 'do it yourselfer' or farmer/rancher must be more than five contiguous acres.
    • The farmer/rancher must generate the used oil only from their own machinery and the amount of used oil generated must not exceed an annual average of 25 gallons per month.

The Department of Environmental Quality strongly encourages you to recycle your used oil and to use alternatives to used oil for dust suppression.  Please refer to the Hazardous Waste Lists of local used oil recyclers, used oil collectors, and alternatives for dust suppression for more information.

If you need more information, please contact us by telephone at (406) 444-3490.