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Air Permit Public Notices

Types of Permits Subject to Public Notice

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Construction permits require public notice for reasons listed in Regulation Number 3, Part B, Section III.C. The most common reasons are: New emission limits and/or limit increases in the draft permit trigger the requirement for public comment (25 tons per year in a nonattainment area or 50 tons per year in an attainment area.

  • The source could possibly emit odor above the limits found in the Air Quality Control Commission Regulation Number 2.
  • The source emits hazardous air pollutants at a level that requires them to follow the National Emissions Standards for Hazardous Air Pollutants (NESHAPS).
  • The source is requesting a federally enforceable limit on potential emissions in order to keep yearly emissions low enough to not trigger other regulatory requirements. 
  • The division decides that public comment is warranted. This decision may be based on the length of time of the operation, its location, the type and projected amount of emissions, the likelihood of public concern, or other relevant factors. 

If all emission standards and ambient air quality standards are met, we will grant an Initial Approval permit. The Initial Approval permit allows the source to construct and start operation. The source must start construction within 18 months from the date of issuance or the permit can automatically expire. 

Draft operating permits are published on our website and comments are requested for the following permit types:

  • Significant modifications
  • Initial permits
  • Renewal permits and re-openings

All preconstruction permits that include Prevention of Significant Deterioration (PSD) and/or Nonattainment New Source Review Requirements (NANSR) are published on the division's website and comments from the public are requested. 

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Public Notice Period: March 18th - April 17th

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Public Notice Period: March 5th - April 4th

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Public Notice Period: February 29th - March 30th

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Public Notice Period: February 27th - March 28th

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Public Notice Period: January 23rd - March 23rd

Current Permit Public Notices

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During a public notice period, we post the public notice, draft permit, and any calculations/analysis documents on this page, and request written comments from the public. 

NOTE: Comments submitted to the division will be uploaded to an online document repository and will be accessible to the public. Your comments and the division's responses are not considered confidential and will be publicly accessible, including your name, email address, phone, address and any other personal information you provide in your comments. 

If you would like to submit a public comment, please first review our Public Participation Guidance. If you have any questions, general comments, or would like to send us additional information, contact us at cdphe_apcd_airpermitcomments@state.co.us

 

Public Comment Hearings set by the Air Quality Control Commission (AQCC)

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A public hearing has been set by the Air Quality Control Commission (AQCC) for this application:

Rocky Mountain Midstream, LLC - Auburn Compressor Station - Weld 
Rocky Mountain Midstream, LLC - Mustang Compressor Station - Weld
Rocky Mountain Midstream, LLC - West Brighton Compressor Station - Weld

 

Hearing Date/Time: March 29 at 1:00pm. The hearing will conclude by 3:00pm or earlier if all who wish to speak have been heard.

Hearing Location: Online only via Zoom.

 

To attend the hearing online, please reference the Notice of Public Comment Hearing for information on how to register.

The application and associated materials, public notice for public comment period, and draft permit and technical review document are available here. The Air Quality Control Commission has posted documents related to this hearing here.

The Division will continue to accept public comments until the conclusion of the public comment hearing on March 29, 2024, or the deadline set by the AQCC at the public comment hearing.

Additional guidance related to public participation at Air Quality Control Commission hearings can be found on the AQCC website.

Division Responses to Public Comments

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Suncor Energy (U.S.A.), Inc. - Commerce City Refinery - Plant 2 (East) - Adams County

The Division reviewed comments received during the second public notice period for the Suncor Refinery Plant 2 Renewal Title V Operating Permit. Responses to the comments can be found here. The Division sent the revised Proposed permit and TRD to EPA on June 22, 2022. EPA's 45-day review period starts June 23, 2022 and ends August 7, 2022. The revised Proposed permit and TRD can be found here

Comments received during the second public notice period can be viewed here.

Responses to comments received during the initial public notice period can be viewed here.

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Suncor Energy (U.S.A.), Inc - Commerce City Refinery - Plants 1 and 3 (West) - Adams County

The public notice period for the renewal permit for Plants 1 and 3 ended on July 13, 2022. The Division is currently reviewing comments and preparing responses. The responses will be posted to this page when they are complete. The draft permit, draft technical review document, applications and other associated documents can be found here.  Comments received during the public notice period will be posted here

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The division's responses to comments on previous permitting actions can be accessed from the electronic records depository. Search Records