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Colorado Department of Public Health and Environment

Colorado Smoke Management Program

Do I Need a Permit?

If you think you may need a Colorado prescribed fire smoke permit and have never applied for one, contact us. Procedures can get complex.

Most open fires in Colorado need a smoke permit.  Permits are designed to protect air quality, for health (including NAAQS), visibility and other public aspects of welfare.

Graphics version:

See also the full version of this flyer from the Colorado Prescribed Fire Council.  The first page of the flyer addresses fire control permits, and the last page has tips for safe burning.


Short text version:

1.  Is the burn for production agriculture? yes No smoke permit is needed.
no Go to question 2.
not sure Read text below this table.
2.  Is the burn for grassland or forest management, including vegetative, habitat, or fuel management AND includes only clean, unprocessed wildland fuels? yes Go to question 3.
no Read about a general open burn smoke permit. 
not sure Read text below this table, or contact us.
3.  Is the project small enough for general open burning?

Piles:  < 50 piles and cold by sunset

OR

Broadcast:  < 10 acres of grass or < 5 acres of any other fuel type

yes Read about a general open burn smoke permit. 
no

Get a prescribed fire smoke permit.  Start with basic prescribed fire permit procedures.

not sure Contact us.

Longer text version of criteria in table above:

In Colorado the purpose and size of a burn determine whether and what kind of smoke permit is needed.  The Air Quality Control Commission's Regulation 9 lists the burns that are exempt:

 Keeping firewood out of these piles and building them small but tight and tall helps them burn down cleanly before evening inversions.
Intense urban interface work of Platte Canyon Fire Department's mitigation crew.  Keeping firewood out of these piles and building them small but tight and tall helps the piles burn down cleanly before evening inversions.
  • Burns for purposes other than agriculture or forest management, such as disposal of trees cleared for development or road construction or requests to burn lumber, need a general open burn smoke permit.  Open burning is a different kind of air quality permit than prescribed fire permits.

  • Forest management burns that are very small are covered under general open burn permits.

  • Larger burns for forest or grassland management need a prescribed fire permit.

  • Air curtain burners have special permitting requirements.  Please contact the general open burn staff at APCD.

  • If you are burning household trash or animal parts or carcasses, or want to cook on an open fire, read 'special situations.'

  • Training burns big enough otherwise to qualify as needing a prescribed fire smoke permit are not exempt from air quality permits.  However, if a training burn involves structures or is small enough to qualify for a general open burn permit, contact the relevant person for open burns in your county.

None of this discussion about air quality and smoke permits addresses fire control.  Many counties and fire protection districts require that individuals, businesses, and sometimes agencies who burn obtain a fire control permit.  A fire control permit is separate from and in addition to an air quality smoke permit.