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Clean Air Act stationary source · ICIS-AIR MT0000003008300003

MDU - LEWIS & CLARK STATION, Sidney, MT: Clean Air Act compliance record, inspections, violations, penalties

MDU - LEWIS & CLARK STATION, at MT HWY 23, Sidney in Richland County, Montana, is an operating synthetic minor 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 “No Violation Identified”. 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 filedMDU - LEWIS & CLARK STATION
ICIS-AIR IDMT0000003008300003
EPA facility registry ID110020377019
Operating statusOperating
Emissions classificationSynthetic minor source
Current violation status (ICIS-AIR high-priority violation field)No Violation Identified
AddressMT HWY 23, Sidney, MT 59270
CountyRichland County
In a nonattainment countyNo (EPA Green Book)
Industry (NAICS)Utilities (NAICS 2211)
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 MDU - LEWIS & CLARK STATION 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 25, 2023FCE On-SiteStateAcid Rain Deposition Control (CAA Title IV); 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
July 23, 2021FCE On-SiteStateAcid Rain Deposition Control (CAA Title IV); 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
September 24, 2019FCE On-SiteStateAcid Rain Deposition Control (CAA Title IV); 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); State 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.

EPA’s violation history file holds no violation for ICIS-AIR MT0000003008300003 since January 1, 2017.

Enforcement and penalties

0 formal enforcement actions since January 1, 2017, 0 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.

Informal enforcement

EPA’s informal action file holds no notice or warning for ICIS-AIR MT0000003008300003 since January 1, 2017.

Stack tests

DateWhat EPA recordedAgency
April 2, 2024PassState
April 2, 2024PassState
April 2, 2024PassState
May 12, 2021PassState
May 12, 2021PassState
April 27, 2021PassState
December 16, 2020PassState
October 23, 2020PassState
July 29, 2020PassState
July 29, 2020PassState
July 29, 2020PassState
July 29, 2020PassState
April 21, 2020PassState
February 21, 2020PassState
November 1, 2019PassState
August 19, 2019PassState
August 19, 2019PassState
July 27, 2019PassState
July 27, 2019PassState
April 8, 2019PassState
January 14, 2019PassState
January 14, 2019PassState
January 14, 2019PassState
November 20, 2018PassState
August 6, 2018PassState
August 6, 2018PassState
July 30, 2018PassState
July 30, 2018PassState
April 30, 2018PassState
April 30, 2018PassState
April 9, 2018PassState
September 18, 2017PassState
July 13, 2017PassState
July 13, 2017PassState
July 13, 2017PassState
June 2, 2017PassState
June 2, 2017PassState
March 29, 2017PassState
March 29, 2017PassState
January 30, 2017PassState
January 30, 2017PassState

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 110020377019 there.

Nearby on the register

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

What this page shows

The page covers the Velarion Records public-records register entry for MDU - LEWIS & CLARK STATION in Sidney, MT, a Clean Air Act stationary source listed as an operating synthetic minor source. It lists 3 compliance evaluations since January 1, 2017, 0 high-priority violations since January 1, 2017, and 0 formal enforcement actions since January 1, 2017, with current violation status No Violation Identified.