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ICIS-AIR PA000735873

MARKWEST LIBERTY BLUESTONE LLC/VOLL COMP STA, Evans City, PA: Clean Air Act compliance record, inspections, violations, penalties

MARKWEST LIBERTY BLUESTONE LLC/VOLL COMP STA is on EPA’s ICIS-AIR register at 318 WOODLANDS RD, Evans City in Butler County, Pennsylvania: operating status operating, emissions classification minor source, current violation status “No Violation Identified”. Butler County is on EPA’s Green Book list of areas that do not meet a national air quality standard.

Identity

Facility as filedMARKWEST LIBERTY BLUESTONE LLC/VOLL COMP STA
ICIS-AIR IDPA000735873
EPA facility registry ID110045945457
Operating statusOperating
Emissions classificationMinor source
Current violation status (HPV field)No Violation Identified
Address318 WOODLANDS RD, Evans City, PA 16033-4248
CountyButler County
In a nonattainment countyYes (EPA Green Book)
Industry (NAICS)Oil and gas extraction (NAICS 2111)
SIC code1311
EPA region03

Programs and pollutants

The program, pollutant and Title V files are not loaded: what this page covers.

Compliance evaluations

DateWhat EPA recordedAgencyPrograms
April 17, 2026FCE On-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
March 3, 2026PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
April 30, 2025PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
July 25, 2024FCE On-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
May 2, 2024PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
April 18, 2023PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
June 9, 2022PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
December 8, 2021PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
June 23, 2021PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
June 11, 2021PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
March 30, 2021PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
September 25, 2020PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
August 25, 2020PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
August 24, 2020PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
April 2, 2020PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
May 22, 2019PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
February 26, 2019FCE On-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
May 23, 2018PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
April 4, 2018PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
May 31, 2017PCE Off-SiteStateMACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards

Violations

What high-priority and federally reportable violations mean.

EPA’s violation history file holds no violation for ICIS-AIR PA000735873 since January 1, 2017.

Enforcement and penalties

2 of the formal enforcement actions carry a penalty filed above zero. How a penalty is shown.

DateWhat EPA recordedAgencyPenalty, as filed
July 9, 2018Civil Judicial ActionU.S. EPA$385,000
January 18, 2017Administrative OrderState$3,600

Informal enforcement

EPA’s informal action file holds no notice or warning for ICIS-AIR PA000735873 since January 1, 2017.

Stack tests

DateWhat EPA recordedAgency
May 21, 2026PassState
March 4, 2026PassState
October 22, 2025PassState
March 5, 2025PassState
March 6, 2024PassState
March 8, 2023PassState
March 9, 2022PassState
March 10, 2021PassState
March 20, 2020PassState
March 19, 2019PassState
March 22, 2018PassState
March 23, 2017PassState

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Free from EPA: Detailed Facility Report, ECHO Notify (registry ID 110045945457).

Other air sources in Pennsylvania beside MARKWEST LIBERTY BLUESTONE LLC/VOLL COMP STA

EPA ICIS-AIR download, loaded September 14, 2026.