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Paul Spur/Douglas | PM-10 Nonattainment Area

County Affected:

Parts of Cochise County | View on a Map >

Nonattainment Area Designation Date:

Oct. 31, 1990
(55 FR 45799)

Classification Level: 


Pollutant of Concern:

PM10 (particulate matter 10 microns or less in diameter; 1987 standards)


The concentration of PM10 in the air in Douglas is occasionally above federal standards. ADEQ is developing a nonattainment State Implementation Plan (SIP) to improve the air quality in this area. The plan will include an updated emissions inventory, modeling demonstration, strategy for Exceptional Events and rules for PM10 controls.

Sources of Pollutant: 

  • Agricultural activities
  • Unpaved roads
  • Cleared areas/vacant lots
  • Open burning and wildfires
  • Windblown dust
  • Emissions coming across the border (outside the U.S.) 


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