air quality

Letter to the EPA Inspector General Requesting Review of Colorado Air Quality Non-Enforcement (PDF)

by | March 30, 2021
DESCRIPTION: Request for Review of Intentional Non-Enforcement of National Ambient Air Quality Standards by Colorado Department of Public Health & Environment Pursuant to State Implementation Plan Under the Clean Air Act, 42 U.S.C. § 7401 et seq. TO: EPA, Office of the Inspector ...

Letter to Colorado Department of Public Health and Environment – Air Quality Standards – 03/30/2021 (PDF)

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DESCRIPTION: Letter to Colorado Department of Public Health and the Environment to request that Colorado meet all Clean Air Act and Colorado Air Pollution Prevention and Control Act requirements TO: Jill Hunsaker-Ryan, Director, Colorado Department of Public Health and Environment FROM: ...

Letter to EPA IG – Colorado Air Quality Standards – 03/30/2021 (PDF)

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DESCRIPTION: Request for Review of Intentional Non-Enforcement of National Ambient Air Quality Standards by Colorado Department of Public Health & Environment Pursuant to State Implementation Plan Under the Clean Air Act, 42 U.S.C. § 7401 et seq. TO: Inspector General Sean W. O’ ...

I-70 Expansion Modeling Report (PDF)

by | May 8, 2018
Air Modeling for PM 2.5 & PM 10 for I-70 East Phase1 demonstrates that the project will violate NAAQS PM 2.5 ...

Pruitt’s New Dirty Air Plan Hatched Behind the Scenes

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Ambient or Outdoor Air Pollution Standards Set for Rollback per Industry Playbook ...