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Clean Air Act stationary source · ICIS-AIR OH0000000634005033

MARKWEST HARRISON WEST COMPRESSOR STATION, Freeport, OH: Clean Air Act compliance record, inspections, violations, penalties

MARKWEST HARRISON WEST COMPRESSOR STATION, at POSSUM HOLLOW ROAD, Freeport in Harrison County, Ohio, 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”. 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 filedMARKWEST HARRISON WEST COMPRESSOR STATION
ICIS-AIR IDOH0000000634005033
EPA facility registry ID110062746729
Operating statusOperating
Emissions classificationMinor source
Current violation status (ICIS-AIR high-priority violation field)No Violation Identified
AddressPOSSUM HOLLOW ROAD, Freeport, OH 43973
CountyHarrison County
In a nonattainment countyNo (EPA Green Book)
Industry (NAICS)Pipeline transportation (NAICS 4862)
EPA region05

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 HARRISON WEST COMPRESSOR 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

EPA’s compliance evaluation file holds no evaluation of ICIS-AIR OH0000000634005033 since January 1, 2017.

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 OH0000000634005033 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 OH0000000634005033 since January 1, 2017.

Stack tests

The newest 50 of 156.

DateWhat EPA recordedAgency
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
March 12, 2026PassState
May 6, 2024PassState
May 6, 2024PassState
May 6, 2024PassState
May 6, 2024PassState
May 6, 2024PassState
May 6, 2024PassState
May 5, 2024PassState
May 5, 2024PassState
May 5, 2024PassState
May 9, 2023PassState
May 9, 2023PassState
May 9, 2023PassState
May 9, 2023PassState
May 9, 2023PassState
May 9, 2023PassState
May 9, 2023PassState
May 9, 2023PassState
May 9, 2023PassState
March 21, 2023PassState
March 21, 2023PassState
March 21, 2023PassState
March 21, 2023PassState
March 21, 2023PassState
March 21, 2023PassState
March 21, 2023PassState
March 21, 2023PassState
March 21, 2023PassState
May 9, 2022PassState
May 9, 2022PassState
May 9, 2022PassState
May 9, 2022PassState
May 9, 2022PassState

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 110062746729 there.

Nearby on the register

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