Clean Air Act stationary source · ICIS-AIR PA000740937
MARKWEST LIBERTY BLUESTONE LLC/TRILLITH COMP STA, Harmony, PA: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Minor sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 24Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 1Formal enforcement actions since January 1, 2017
MARKWEST LIBERTY BLUESTONE LLC/TRILLITH COMP STA, at 219 E LANCASTER RD, Harmony in Butler County, Pennsylvania, is an operating 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”. Butler 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 filed | MARKWEST LIBERTY BLUESTONE LLC/TRILLITH COMP STA |
|---|---|
| ICIS-AIR ID | PA000740937 |
| EPA facility registry ID | 110067563639 |
| Operating status | Operating |
| Emissions classification | Minor source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 219 E LANCASTER RD, Harmony, PA 16037 |
| County | Butler County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Mining support (NAICS 2131) |
| SIC code | 1311 |
| EPA region | 03 |
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 LIBERTY BLUESTONE LLC/TRILLITH COMP STA 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
- 24Evaluations since January 1, 2017
- 4Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| April 17, 2026 | FCE On-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 3, 2026 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 30, 2025 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| May 29, 2024 | FCE On-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| May 2, 2024 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 18, 2023 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 12, 2022 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| May 17, 2022 | PCE On-Site Monitoring/Sampling | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 23, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 9, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 15, 2021 | FCE On-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 14, 2021 | PCE On-Site Monitoring/Sampling | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 27, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 30, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 30, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 19, 2021 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 24, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 24, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 23, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| May 22, 2019 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 31, 2018 | FCE On-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 5, 2018 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 16, 2018 | PCE On-Site Monitoring/Sampling | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| May 31, 2017 | PCE Off-Site | State | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Violations
- 0Violation 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.
EPA’s violation history file holds no violation for ICIS-AIR PA000740937 since January 1, 2017.
Enforcement and penalties
1 formal enforcement actions since January 1, 2017, 1 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 |
|---|---|---|---|
| July 9, 2018 | Civil Judicial Action | U.S. EPA | $385,000 |
Informal enforcement
EPA’s informal action file holds no notice or warning for ICIS-AIR PA000740937 since January 1, 2017.
Stack tests
- 13Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| July 23, 2026 | Pass | State |
| August 29, 2025 | Pass | State |
| August 1, 2024 | Pass | State |
| August 15, 2023 | Pass | State |
| November 10, 2022 | Pass | State |
| October 6, 2022 | Pass | State |
| August 25, 2022 | Pass | State |
| August 27, 2021 | Pass | State |
| August 27, 2020 | Pass | State |
| October 25, 2019 | Pass | State |
| September 3, 2019 | Pass | State |
| August 31, 2018 | Pass | State |
| September 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 110067563639 there.
Nearby on the register
- Air-emissions sources in Butler County
- Every source record in Butler County, A to Z
- Air-emissions sources in Pennsylvania
- Every source record in Pennsylvania, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.