Clean Air Act stationary source · ICIS-AIR PA000743056

EXCO APPALACHIA MIDSTREAM LLC/SAWMILL COMP STA, Kittanning, PA: Clean Air Act compliance record, inspections, violations, penalties

Name: EXCO APPALACHIA MIDSTREAM LLC/SAWMILL COMP STA, ICIS-AIR PA000743056: Clean Air Act stationary source record
Creator: Velarion Records
License: https://www.usa.gov/government-works

OperatingOperating status
Minor sourceEmissions classification
No Violation IdentifiedCurrent violation status, as filed
15Compliance evaluations since January 1, 2017
0High-priority violations since January 1, 2017
0Formal enforcement actions since January 1, 2017

EXCO APPALACHIA MIDSTREAM LLC/SAWMILL COMP STA, at SR 1021, Kittanning in Armstrong 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”. Armstrong 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	EXCO APPALACHIA MIDSTREAM LLC/SAWMILL COMP STA
ICIS-AIR ID	PA000743056
EPA facility registry ID	110046273661
Operating status	Operating
Emissions classification	Minor source
Current violation status (ICIS-AIR high-priority violation field)	No Violation Identified
Address	SR 1021, Kittanning, PA 16201
County	Armstrong County
In a nonattainment county	Yes (EPA Green Book)
Industry (NAICS)	Oil and gas extraction (NAICS 2111)
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 EXCO APPALACHIA MIDSTREAM LLC/SAWMILL 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

15Evaluations since January 1, 2017
4Full compliance evaluations

Date	What EPA recorded	Agency	Programs
April 8, 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
April 7, 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
May 2, 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
December 11, 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 23, 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
May 31, 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
April 22, 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
April 29, 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 8, 2020	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 21, 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
March 28, 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
April 6, 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 20, 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
February 15, 2017	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
February 1, 2017	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

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 PA000743056 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

Date	What EPA recorded	Agency
October 16, 2026	Notice of Violation	State

Stack tests

10Stack tests since January 1, 2017
1Recorded as failed

Date	What EPA recorded	Agency
November 13, 2025	Fail	State
November 13, 2024	Pass	State
February 20, 2024	Pass	State
February 21, 2023	Pass	State
February 22, 2022	Pass	State
February 22, 2021	Pass	State
February 21, 2020	Pass	State
February 21, 2019	Pass	State
February 22, 2018	Pass	State
February 22, 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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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 110046273661 there.

Nearby on the register

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

The Velarion Records public-records register page covers the Clean Air Act stationary source record for EXCO APPALACHIA MIDSTREAM LLC/SAWMILL COMP STA in Kittanning, PA, under ICIS-AIR ID PA000743056. The page lists operating status as Operating, emissions classification as Minor source, and current violation status as No Violation Identified. The figures listed are 15 Compliance evaluations since January 1, 2017, 0 High-priority violations since January 1, 2017, and 0 Formal enforcement actions since January 1, 2017.