Public Notice for Tallgrass Midstream, LLC - Douglas Gas Plant - P0023909

Wyoming Department of Environmental Quality  | view as a webpage

Wyoming Department of Environmental Quality

Public Notice for Tallgrass Midstream, LLC - Douglas Gas Plant - P0023909

State of Wyoming, Department of Environmental Quality/Division of Air Quality
Draft Operating Permit

Chapter 6, Section 3(d)(ix) of the Wyoming Air Quality Standards and Regulations provides, prior to final determination on an application for a Chapter 6, Section 3 operating permit, opportunity be given for public comment and public hearing on the information submitted by the owner or operator and on the draft permit.  The regulation further requires such information be made available to the public and the public be allowed a period of thirty (30) days to submit comments.  A public hearing will be conducted only if, in the opinion of the Administrator, sufficient interest is generated or if an aggrieved party requests a hearing within the 30 day public comment period.
Notice is hereby given on February 14, 2018 that the State of Wyoming, Department of Environmental Quality, Division of Air Quality, proposes to issue a modified Chapter 6, Section 3 operating permit to the following applicant for the Douglas Gas Plant in Converse County, Wyoming:

Tallgrass Midstream, LLC
370 Van Gordon Street
Lakewood, CO  80228

The Douglas Gas Plant is located in Sections 34 and 35, Township 33N, Range 71W, Converse County, Wyoming (252 Highway 59, Douglas, Wyoming).  The facility is a natural gas processing plant.  The pollutants of primary concern from this facility are:  Nitrogen Oxides (NOX), Carbon Monoxide (CO), Volatile Organic Compounds (VOCs), Hazardous Air Pollutants (HAPs), and Greenhouse Gas equivalents (CO2e).
Chapter 6, Section 3 does not impose new substantive requirements on an air pollution source but does require sources subject to the Operating Permit Program obtain a renewable operating permit that clarifies in a single document which air quality requirements apply to the source and provides methods for assessing the source's compliance with those requirements.
This permit is being modified to incorporate requirements of recently issued construction waivers and remove equipment no longer authorized for construction.  This modification reflects estimated decreases in yearly potential emissions of the following: 1 ton of particulate matter; 1ton of PM10 particulate matter; 1 ton of PM2.5 particulate matter; 4 tons of NOx; 5 tons of CO; 9 tons of VOCs; 3 tons of hazardous air pollutants; and 9590 tons of CO2e.  Only the modified portions of the permit are open for public comment.
The Division's Operating Permit contact is Melissa Meares, Operating Permit Program Supervisor, Division of Air Quality, Department of Environmental Quality, 200 West 17th Street, Cheyenne, Wyoming 82002 at (307) 777-3784.  Interested parties may examine the draft permit, the application, all relevant supporting materials and all other materials related to the permit decision at the Division's Cheyenne office or the Division's Casper Field Office located at 152 N. Durbin Street, Suite 100, Casper, Wyoming, 82601; (307) 473-3455.  Arrangements can be made with the Division to copy relevant materials, if necessary (a fee will be assessed for reproductions).  In accordance with the Americans with Disabilities Act, special assistance or alternate formats will be made available upon request for individuals with disabilities.  Additionally, a complete copy of the draft operating permit and the associated statement of basis for the permit can be found on the Division’s website at: 
Public comments or a request for a hearing must be received no later than 5:00 p.m. local time (Mountain) on March 16, 2018.  Requests for a hearing shall be in writing and shall include the name and contact information of the person requesting the hearing, a brief statement identifying the purpose of the request, and a brief statement of the issues to be discussed.  Written public comments or requests for a hearing should be directed to the Administrator, Division of Air Quality, Department of Environmental Quality, 200 West 17th Street, Cheyenne, Wyoming 82002.  The FAX number for the Division is (307)635-1784.  Comments or requests submitted by email will not be included in the administrative record.  All written comments received by 5:00 p.m. local time (Mountain) on March 16, 2018 will be considered in arriving at a final determination on the issuance of this permit and will be retained in the Cheyenne office.

You may access the electronic files by clicking on the links below.

Draft Permit
Statement of Basis
Web Notice