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Clean Air Act stationary source · ICIS-AIR MT0000003001300004

CALUMET MONTANA REFINING, Great Falls, MT: Clean Air Act compliance record, inspections, violations, penalties

CALUMET MONTANA REFINING, at 1900 10TH ST NE, Great Falls in Cascade County, Montana, 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 “Unaddressed-EPA”. Cascade 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 filedCALUMET MONTANA REFINING
ICIS-AIR IDMT0000003001300004
EPA facility registry ID110000428500
Operating statusOperating
Emissions classificationMajor source
Current violation status (ICIS-AIR high-priority violation field)Unaddressed-EPA
Address1900 10TH ST NE, Great Falls, MT 59404
CountyCascade County
In a nonattainment countyYes (EPA Green Book)
Industry (NAICS)Petroleum and coal products manufacturing (NAICS 3241)
EPA region08

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 CALUMET MONTANA REFINING 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
July 28, 2026PCE Off-SiteStateMACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); 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 13, 2024FCE On-SiteStateNew Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
August 24, 2021FCE On-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
June 12, 2019PCE Off-SiteStateState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
March 26, 2019PCE Off-SiteStateNew Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
November 19, 2018PCE Off-SiteStateNew Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
December 4, 2017PCE Off-SiteStateState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
September 30, 2017FCE On-SiteStateState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title 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
April 30, 2019Earliest FRV determinationStatePrevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
June 6, 2018Earliest FRV determinationStateNew Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
June 1, 2018HPV day-zero determinationStateNew Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
April 15, 2018HPV day-zero determinationStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
November 15, 2017Earliest FRV determinationStateState Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits

Enforcement and penalties

3 formal enforcement actions since January 1, 2017, 3 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
February 4, 2020Administrative OrderState$26,840
January 29, 2020Administrative OrderState$27,690
June 20, 2018Administrative OrderState$87,950

Informal enforcement

DateWhat EPA recordedAgency
July 12, 2019Warning LetterState
April 10, 2019Notice of ViolationState
February 5, 2019Notice of ViolationState
July 9, 2018Notice of ViolationState
February 5, 2018Notice of ViolationState
January 18, 2017Notice of ViolationState
January 18, 2017Warning LetterState

Stack tests

The newest 50 of 108.

DateWhat EPA recordedAgency
July 20, 2026PassState
July 20, 2026PassState
July 20, 2026PassState
April 1, 2026PassState
April 1, 2026PassState
April 1, 2026PassState
April 1, 2026PassState
February 9, 2026PassState
February 9, 2026PassState
February 9, 2026PassState
January 6, 2026PassState
June 9, 2025PassState
December 15, 2023PassState
December 15, 2023PassState
December 15, 2023PassState
December 15, 2023PassState
December 15, 2023PassState
December 15, 2023PassState
May 10, 2023PassState
May 10, 2023PassState
February 13, 2023PassState
February 13, 2023PassState
February 13, 2023PassState
February 13, 2023PassState
February 13, 2023PassState
February 13, 2023PassState
January 13, 2023PassState
August 23, 2022PassState
July 21, 2022PassState
July 21, 2022PassState
July 21, 2022PassState
July 21, 2022PassState
July 21, 2022PassState
July 21, 2022PassState
July 21, 2022PassState
July 21, 2022PassState
July 18, 2022PassState
July 18, 2022PassState
February 15, 2022PassState
February 15, 2022PassState
September 20, 2021PassState
September 20, 2021PassState
August 14, 2021PassState
July 12, 2021PassState
July 12, 2021PassState
July 12, 2021PassState
February 18, 2021PassState
February 18, 2021PassState
February 18, 2021PassState
February 18, 2021PassState

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 110000428500 there.

Nearby on the register

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

What this page shows

The page covers the Clean Air Act compliance record of CALUMET MONTANA REFINING, Great Falls, MT, on the ICIS-AIR register. It lists Operating as the operating status, Major source as the emissions classification, and Unaddressed-EPA as the current violation status, as filed. The figures listed are 8 compliance evaluations, 2 high-priority violations, and 3 formal enforcement actions since January 1, 2017.