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Clean Air Act stationary source · ICIS-AIR TX0000004820100027

EXXONMOBIL BAYTOWN REFINERY, Baytown, TX: Clean Air Act compliance record, inspections, violations, penalties

EXXONMOBIL BAYTOWN REFINERY, at 2800 DECKER DR, Baytown in Harris County, Texas, 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”. Harris County is on EPA’s Green Book list of areas that do not meet a national air quality standard. 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 filedEXXONMOBIL BAYTOWN REFINERY
ICIS-AIR IDTX0000004820100027
EPA facility registry ID110000502901
Operating statusOperating
Emissions classificationMajor source
Current violation status (ICIS-AIR high-priority violation field)Violation w/in 1 Year
Address2800 DECKER DR, Baytown, TX 77520
CountyHarris County
In a nonattainment countyYes (EPA Green Book)
Industry (NAICS)Utilities (NAICS 2212)
EPA region06

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 EXXONMOBIL BAYTOWN REFINERY 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

DateWhat EPA recordedAgencyPrograms
May 12, 2026FCE On-SiteStateTitle V Permits
December 2, 2025PCE Off-SiteU.S. EPAMACT Standards (40 CFR Part 63)
May 10, 2024PCE On-SiteU.S. EPANational Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards
November 18, 2020FCE Off-SiteStateTitle V Permits
December 12, 2018PCE On-SiteU.S. EPAFederally-Enforceable Requirement, Non Specified
July 2, 2018PCE Off-SiteU.S. EPAMACT Standards (40 CFR Part 63); New Source Performance Standards
September 29, 2017FCE On-SiteStateTitle V Permits

Violations

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.

DateWhat EPA recordedAgencyPrograms
June 17, 2026Earliest FRV determinationStateTitle V Permits
June 2, 2026Earliest FRV determinationStateTitle V Permits
January 27, 2026Earliest FRV determinationStateTitle V Permits
August 27, 2025Earliest FRV determinationStateTitle V Permits
February 4, 2021Earliest FRV determinationStateTitle V Permits
October 22, 2020Earliest FRV determinationStateTitle V Permits
August 31, 2020Earliest FRV determinationStateTitle V Permits
March 2, 2020Earliest FRV determinationStateTitle V Permits
February 5, 2020Earliest FRV determinationStateTitle V Permits
January 9, 2020Earliest FRV determinationStateTitle V Permits
August 30, 2019Earliest FRV determinationStateTitle V Permits
April 26, 2019Earliest FRV determinationStateTitle V Permits
December 4, 2018Earliest FRV determinationStateTitle V Permits
October 30, 2018Earliest FRV determinationStateTitle V Permits
October 16, 2018Earliest FRV determinationStateTitle V Permits
September 29, 2017Earliest FRV determinationStateTitle V Permits

Enforcement and penalties

13 formal enforcement actions since January 1, 2017, 13 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.

DateWhat EPA recordedAgencyPenalty, as filed
June 23, 2026Administrative OrderState$25,000
July 25, 2022Administrative OrderState$13,126
June 17, 2022Administrative OrderState$26,250
June 17, 2022Administrative OrderState$50,000
September 13, 2021Administrative OrderState$60,189
September 7, 2021Administrative OrderState$6,563
July 6, 2020Administrative OrderState$19,938
April 2, 2020Administrative OrderState$42,935
February 3, 2020Administrative OrderState$11,738
October 25, 2019Administrative OrderState$26,175
October 25, 2019Administrative OrderState$25,000
August 29, 2019Administrative OrderState$13,330
April 26, 2019Administrative OrderState$70,745

Informal enforcement

EPA’s informal action file holds no notice or warning for ICIS-AIR TX0000004820100027 since January 1, 2017.

Stack tests

The newest 50 of 66.

DateWhat EPA recordedAgency
February 27, 2024PassState
May 27, 2022PassState
May 27, 2022PassState
May 27, 2022PassState
May 27, 2022PassState
May 27, 2022PassState
May 27, 2022PassState
May 27, 2022PassState
May 27, 2022PassState
May 27, 2022PassState
January 20, 2021PassState
January 20, 2021PassState
January 20, 2021PassState
January 20, 2021PassState
January 20, 2021PassState
September 25, 2020PassState
September 18, 2020PassState
September 18, 2020PassState
August 18, 2020PassState
August 18, 2020PassState
August 18, 2020PassState
August 18, 2020PassState
August 18, 2020PassState
August 18, 2020PassState
August 18, 2020PassState
August 18, 2020PassState
July 31, 2020PassState
March 10, 2020N/AState
February 18, 2020N/AState
January 24, 2020PassState
November 20, 2019FailState
November 8, 2019PassState
November 8, 2019PassState
November 8, 2019PassState
September 30, 2019PassState
September 30, 2019PassState
September 9, 2019PassState
September 9, 2019PassState
September 9, 2019PassState
June 5, 2019N/AState
October 17, 2018PassState
September 28, 2018PassState
September 28, 2018PassState
September 7, 2018PassState
September 7, 2018PassState
September 7, 2018PassState
September 7, 2018PassState
September 7, 2018PassState
September 7, 2018PassState
August 17, 2018PassState

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 110000502901 there.

Nearby on the register

Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.