Clean Air Act stationary source · ICIS-AIR OK0000004001100002

US GYPSUM CO / SOUTHARD 227, Southard, OK: Clean Air Act compliance record, inspections, violations, penalties

OperatingOperating status
Major sourceEmissions classification
No Violation IdentifiedCurrent violation status, as filed
8Compliance evaluations since January 1, 2017
0High-priority violations since January 1, 2017
0Formal enforcement actions since January 1, 2017

US GYPSUM CO / SOUTHARD 227, at 0.03MI N OF E0661 RD/CR0660 RD, Southard in Blaine County, Oklahoma, is an operating major 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 filed	US GYPSUM CO / SOUTHARD 227
ICIS-AIR ID	OK0000004001100002
EPA facility registry ID	110008059983
Operating status	Operating
Emissions classification	Major source
Current violation status (ICIS-AIR high-priority violation field)	No Violation Identified
Address	0.03MI N OF E0661 RD/CR0660 RD, Southard, OK 73770
County	Blaine County
In a nonattainment county	No (EPA Green Book)
Industry (NAICS)	Nonmetallic mineral product manufacturing (NAICS 3274)
SIC code	3275
EPA region	06

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 US GYPSUM CO / SOUTHARD 227 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

8Evaluations since January 1, 2017
5Full compliance evaluations

Date	What EPA recorded	Agency	Programs
September 30, 2025	FCE On-Site	State	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; Title V Permits
June 17, 2024	FCE On-Site	State	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; Title V Permits
August 30, 2021	FCE On-Site	State	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; Title V Permits
June 24, 2020	FCE Off-Site	State	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; Title V Permits
August 21, 2018	PCE Off-Site	State	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; Title V Permits
June 7, 2018	FCE On-Site	State	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; Title V Permits
April 3, 2018	PCE Off-Site	State	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; Title V Permits
January 25, 2017	PCE Off-Site	State	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; Title V Permits

Violations

1Violation 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.

Date	What EPA recorded	Agency	Programs
September 22, 2020	Earliest FRV determination	State	State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits

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
December 16, 2021	Notice of Violation	State

Stack tests

2Stack tests since January 1, 2017
0Recorded as failed

Date	What EPA recorded	Agency
March 8, 2018	Pass	State
March 8, 2018	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 110008059983 there.

Nearby on the register

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