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The Southwest Clean Air Agency (SWCAA) is responsible for enforcing federal, state and local outdoor air quality standards and regulations in Clark, Cowlitz, Lewis, Skamania and Wahkiakum counties of southwest Washington state. Our mission is to preserve and enhance air quality in southwest Washington.

Stage 1 Impaired Air Quality Burn Ban

During a stage 1 curtailment all outdoor burning is banned. The use of all uncertified woodstoves are prohibited unless it is your only adequate source of heat.
 
A stage 1 impaired air quality burn ban is called when it is predicted that the twenty-four hour average of PM2.5 levels will reach or exceed thirty-five micrograms per cubic meter within forty-eight hours.

Stage 2 Impaired Air Quality Burn Ban

During a stage 2 curtailment all outdoor burning is banned. The use of all pellet/woodstoves are prohibited unless it is your only adequate source of heat.
 
A Stage 2 impaired air quality burn ban is called when all of the following conditions exist:
(i) A stage 1 impaired air quality burn ban is already in effect and has not reduced the trend of rising PM2.5 levels adequately.
(ii) The twenty-four hour average of PM2.5 levels have already reached or exceeded twenty-five micrograms per cubic meter.
(iii) The Agency expects that PM2.5 levels will remain above twenty-five micrograms per cubic meter for twenty-four hours or more from the time PM2.5 levels reached the trigger in (a)(ii) of this subsection:
 
The Agency may call a stage 2 impaired air quality burn ban without calling a stage 1 impaired air quality burn ban when all of the following conditions exist:
(i) The twenty-four hour average of PM2.5 levels have reached or exceeded twenty-five micrograms per cubic meter.
(ii) PM2.5 levels have risen rapidly.
(iii) The Agency predicts that the twenty-four hour average of PM2.5 levels will exceed thirty-five micrograms per cubic meter within twenty-four hours.
(iv) Weather conditions alone are highly unlikely to help decrease PM2.5 levels sufficiently.