PETITION TO OBJECT TO FINAL RENEWED TITLE V OPERATING PERMIT NO. 07OPGA293 - TEP ROCKY MOUNTAIN’S MAMM CREEK COMPRESSOR STATION

Sep 29, 2026

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Petition to the U.S. Environmental Protection Agency seeks to object to the final renewed Title V Operating Permit No. 07OPGA293 for TEP Rocky Mountain, LLC’s Mamm Creek Compressor Station in Garfield County, Colorado. The petitioner alleges the permit fails to assure compliance with Title V requirements and fails to assure compliance with other applicable Clean Air Act requirements. The petition provides facility descriptions, emission sources, and procedural history, and cites statutory authority under Clean Air Act Section 505(b)(2).

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages17

Reading Time43 min

AccessFree to download

Petition to Object to Final Renewed Title V Operating Permit

The Mamm Creek Compressor Station

Petitioner

Procedural Background

General Title V Permitting Requirements

BEFORE THE ADMINISTRATOR UNITED STATES ENVIRONMENTAL PROTECTION AGENCY IN THE MATTER OF ) ) Clean Air Act Final Renewed ) Title V Operating Permit ) ) Issued to TEP Rocky Mountain, LLC ) for the Mamm Creek Compressor Station, ) Garfield County, Colorado ) ) Issued by the Colorado Department of ) Public Health and Environment, Air Pollution ) Control Division ) Title V Permit No. 07OPGA293 PETITION TO OBJECT TO FINAL RENEWED TITLE V OPERATING PERMIT NO. 07OPGA293 FOR TEP ROCKY MOUNTAIN’S MAMM CREEK COMPRESSOR STATION Pursuant to Section 505(b)(2) of the Clean Air Act, 42 U.S.C. § 7661d(b)(2), and 40 C.F.R. § 70.8(d), the Center for Biological Diversity (“Center” or “Petitioner”) petitions the Administrator of the United States Environmental Protection Agency (“Administrator” or“EPA”) to object to the final renewed Title V Operating Permit (“Title V Permit”) issued by the Colorado Department of Public Health and Environment’s Air Pollution Control Division (“Division”) authorizing TEP Rocky Mountain, LLC (hereafter “TEP”) to operate the Mamm Creek Compressor Station in Garfield County, Colorado. The Center requests the EPA Administrator object on the basis that the Title V Permit fails to assure compliance with Title V requirements under the Clean Air Act and fails to assure compliance with other applicable requirements under the Clean Air Act. The Division’s final Title V Permit and supporting Technical Review Document (“TRD”) were issued on May 1, 2025 and are attached as Exhibits 1 and 2, respectively. THE MAMM CREEK COMPRESSOR STATION The Mamm Creek Compressor Station is an oil and gas processing facility. The facility receives gas from nearby wells that is run through separators and dehydrators to remove oil and wastewater and compressed with several large engines for transport via pipeline and further processing by additional downstream processing facilities. Sources of air pollution at the Mamm Creek Compressor Station include compressor engines, dehydration units, oil and wastewater storage tanks, and routine gas venting from maintenance activities. The Mamm Creek Compressor Station is a significant source of nitrogen oxide (“NOx”) and carbon monoxide (“CO”) emissions, which are released from the compressor engines, but is also a large source of harmful volatile organic compounds (“VOCs”) and other hazardous air pollutants (“HAPs”) . NOx emissions are a byproduct of combustion and include a number of gases known tobe harmful to human health and the environment, including nitrogen dioxide. See EPA,“Basic information about NO2,” website available at [https://www.epa.gov/no2-pollution/basic](https://www.epa.gov/no2-pollution/basic)information-about-no2 (last accessed May 29, 2025) . VOCs include a number of gases known tobe extremely harmful to public health, including hazardous air pollutants like benzene, toluene, hexane, and xylene. See EPA,“Technical Overview of Volatile Organic Compounds,” website available at [https://www.epa.gov/indoor-air-quality-iaq/technical-overview-volatile-organic](https://www.epa.gov/indoor-air-quality-iaq/technical-overview-volatile-organic)compounds (last accessed May 29, 2025) . Both NOx and VOCs also react with sunlight to form ground-level ozone, a respiratory irritant and the key ingredient of smog. See EPA,“Groundlevel Ozone Basics,” website available at [https://www.epa.gov/ground-level-ozone](https://www.epa.gov/ground-level-ozone)pollution/ground-level-ozone-basics (last accessed May 29, 2025) . Annually, the facility has the potential to emit up to 83.38 tons of NOx, 131.4 tons of CO, and 84.8 tons of VOCs. The primary source of NOx and CO are the facility’s compressor engines and flare and the primary source of VOCs at the Mamm Creek Compressor Station include the engines, storage tanks, flare, and gas venting. PETITIONER The Center for Biological Diversity is a nonprofit, 501(c)(3) conservation organization. The Center’s mission is t

FAQs

Who is petitioning the EPA and what permit is being challenged?

The Center for Biological Diversity petitions the EPA to object to the final renewed Title V Operating Permit No. 07OPGA293 issued for the TEP Rocky Mountain Mamm Creek Compressor Station in Garfield County, Colorado.

What are the alleged reasons for objecting to the renewed Title V permit?

The petitioner requests EPA objection because the permit is alleged to fail to assure compliance with Title V requirements and to fail to assure compliance with other applicable Clean Air Act requirements.

What is the procedural timeline leading to this petition?

The Center submitted comments on January 23, 2025; the Division responded on February 14, 2025. The proposed permit underwent a 45-day EPA review ending March 31, 2025 without objection, and the Division issued the final permit on May 1, 2025.

Sep 29, 2026

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