Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Permitting Under the Clean Air Act

Synthetic Minor NSR Permit: MPLX (Owned by Andeavor Field Services, LLC (formerly Tesoro Logistics-Rockies)) - Ponderosa Compressor Station

This page contains the revised synthetic minor NSR permit and administrative record for the  Ponderosa Compressor Station, operated by MPLX (Owned by Andeavor Field Services, LLC (formerly Tesoro Logistics-Rockies)), located on the Uintah and Ouray Indian Reservation in Uintah County, Utah. The Permit Number is SMNSR-UO-002078-2017.003. A final permit was originally issued on November 29, 2016, under the authority of the Tribal Minor New Source Review Permit Program at 40 CFR Part 49. Tesoro appealed the permit to the Environmental Appeals Board on December 29, 2016. After discussions with the EPA regarding the issues of the petition, on March 13, 2017, Tesoro filed a motion to dismiss the petition for review, which the Environmental appeals board granted on March 21, 2017. The EPA addressed Tesoro's concerns with the originally issued permit through the amendments in the final permit on this page, issued and effective on April 6, 2017. This permit was subsequently replaced by the current effective administratively revised permit number SMNSR-UO-002078-2021.004, issued April 20, 2021 (Docket #EPA-R08-OAR-2021-0309).

  • Tesoro Logistics-Rockies - Ponderosa Compressor Station: Revised Synthetic Minor NSR Permit SMNSR-UO-002078-2017.003 (pdf) (1.33 MB, April 6, 2017)
  • Tesoro Logistics-Rockies - Ponderosa Compressor Station: Administrative Record for Synthetic Minor NSR Permit SMNSR-UO-002078-2017.003 (pdf) (13.61 MB, April 6, 2017)

Permitting Under the Clean Air Act

  • Clean Air Act Permitting Around the Nation
    • New England Region (R1)
    • New York, New Jersey, Puerto Rico and U.S. Virgin Islands (R2)
    • Mid-Atlantic Region (R3)
    • Southeastern Region (R4)
    • Great Lakes Region (R5)
    • South Central Region (R6)
    • Midwest Region (R7)
    • Mountains and Plains Region (R8)
    • Pacific Southwest Region (R9)
      • Air Permit Delegation and PSD SIP Approval
      • Electronic Permit System and Dashboards
      • Pending and Issued Permits
      • About NSR Permitting
      • About OCS Permitting
      • About PSD Permitting
      • About Title V Permitting
      • Permitting in Arizona
      • Permitting in California
      • Permitting in Hawai'i and Pacific Islands
      • Permitting in Nevada
    • Pacific Northwest Region (R10)
  • CAA Permitting Tools & ​Related Resources
  • Outer Continental Shelf Air Permits
Contact Us About Permitting Under the Clean Air Act
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on January 15, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.