Clean Air Act stationary source · ICIS-AIR OK0000004000900118
MARKWEST OKLAHOMA GAS CO LLC / BUFFALO CREEK PROCESSING PLANT, Sayre, OK: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- Violation w/in 1 YearCurrent violation status, as filed
- 41Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 2Formal enforcement actions since January 1, 2017
MARKWEST OKLAHOMA GAS CO LLC / BUFFALO CREEK PROCESSING PLANT, at 0.66 MI NNE BK11/BKK RDS, Sayre in Beckham County, Oklahoma, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “Violation w/in 1 Year”. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | MARKWEST OKLAHOMA GAS CO LLC / BUFFALO CREEK PROCESSING PLANT |
|---|---|
| ICIS-AIR ID | OK0000004000900118 |
| EPA facility registry ID | 110046467088 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | Violation w/in 1 Year |
| Address | 0.66 MI NNE BK11/BKK RDS, Sayre, OK 73662 |
| County | Beckham County |
| In a nonattainment county | No (EPA Green Book) |
| Industry (NAICS) | Oil and gas extraction (NAICS 2111) |
| SIC code | 1321 |
| EPA region | 06 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs MARKWEST OKLAHOMA GAS CO LLC / BUFFALO CREEK PROCESSING PLANT is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 41Evaluations since January 1, 2017
- 5Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| July 23, 2024 | FCE On-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 13, 2023 | FCE On-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 22, 2023 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 7, 2023 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 12, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| October 31, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 7, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 7, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 23, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 4, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 28, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 25, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 12, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 7, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 25, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 29, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 29, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 19, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 19, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 10, 2021 | FCE On-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 5, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 24, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 10, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 7, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 2, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 9, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 30, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 22, 2019 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 27, 2019 | FCE On-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 29, 2019 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 14, 2019 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 18, 2018 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 31, 2018 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 18, 2018 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 6, 2018 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 6, 2018 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 10, 2018 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 8, 2017 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 12, 2017 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 6, 2017 | FCE On-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 1, 2017 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
Violations
- 6Violation determinations since January 1, 2017
- 0Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| December 2, 2025 | Earliest FRV determination | State | New Source Performance Standards |
| October 16, 2024 | Earliest FRV determination | State | Title V Permits |
| September 27, 2024 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 29, 2023 | Earliest FRV determination | State | New Source Performance Standards; Title V Permits |
| March 6, 2019 | Earliest FRV determination | State | New Source Performance Standards |
| July 5, 2017 | Earliest FRV determination | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
Enforcement and penalties
2 formal enforcement actions since January 1, 2017, 2 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| January 8, 2019 | Civil Judicial Action | U.S. EPA | $154,166 |
| November 14, 2018 | Administrative Order | State | $1,488 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| July 12, 2023 | Notice of Violation | State |
| August 21, 2017 | Notice of Violation | State |
Stack tests
- 38Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| June 19, 2025 | Pass | State |
| April 22, 2025 | Pass | State |
| April 22, 2025 | Pass | State |
| November 15, 2024 | Pass | State |
| October 18, 2024 | Pass | State |
| May 1, 2024 | Pass | State |
| May 1, 2024 | Pass | State |
| August 11, 2023 | Pass | State |
| June 19, 2023 | Pass | State |
| November 23, 2022 | Pass | State |
| September 6, 2022 | Pass | State |
| April 20, 2022 | Pass | State |
| February 8, 2022 | Pass | State |
| February 7, 2022 | Pass | State |
| February 24, 2021 | Pass | State |
| January 11, 2021 | Pass | State |
| October 7, 2020 | Pass | State |
| March 24, 2020 | Pass | State |
| March 23, 2020 | Pass | State |
| March 23, 2020 | Pass | State |
| April 2, 2019 | Pass | State |
| April 2, 2019 | Pass | State |
| April 1, 2019 | Pass | State |
| April 1, 2019 | Pass | State |
| February 26, 2019 | Pass | State |
| February 26, 2019 | Pass | State |
| July 23, 2018 | Pass | State |
| April 11, 2018 | Pass | State |
| April 11, 2018 | Pass | State |
| April 10, 2018 | Pass | State |
| April 10, 2018 | Pass | State |
| March 6, 2018 | Pass | State |
| March 6, 2018 | Pass | State |
| April 13, 2017 | Pass | State |
| April 13, 2017 | Pass | State |
| April 12, 2017 | Pass | State |
| April 12, 2017 | Pass | State |
| April 12, 2017 | Pass | State |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110046467088 there.
Nearby on the register
- Air-emissions sources in Beckham County
- Every source record in Beckham County, A to Z
- Air-emissions sources in Oklahoma
- Every source record in Oklahoma, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.