ICIS-AIR OK0000004006900004

US SILICA CO / MILL CREEK NORTH PLANT MINE PLANT 39, Mill Creek, OK: Clean Air Act compliance record, inspections, violations, penalties

OperatingOperating status
Synthetic minor sourceEmissions classification
No Violation IdentifiedCurrent violation status, as filed
2Compliance evaluations since January 1, 2017
0High-priority violations since January 1, 2017
0Formal enforcement actions since January 1, 2017

US SILICA CO / MILL CREEK NORTH PLANT MINE PLANT 39 is on EPA’s ICIS-AIR register at 5 MILES N OF, Mill Creek in Johnston County, Oklahoma: operating status operating, emissions classification synthetic minor source, current violation status “No Violation Identified”.

What stands out

The newest of the 2 events on file is a compliance evaluation dated October 7, 2024.
Its events on file run from June 24, 2020 through October 7, 2024.
All 2 of its compliance evaluations on file are full compliance evaluations.
The register holds 90 air-emissions sources in Johnston County, Oklahoma.

Every line is computed by formula from the record’s stored figures; nothing is estimated.

Identity

Facility as filed	US SILICA CO / MILL CREEK NORTH PLANT MINE PLANT 39
ICIS-AIR ID	OK0000004006900004
EPA facility registry ID	110007385597
Operating status	Operating
Emissions classification	Synthetic minor source
Current violation status (HPV field)	No Violation Identified
Address	5 MILES N OF, Mill Creek, OK 74856
County	Johnston County
In a nonattainment county	No (EPA Green Book)
Industry (NAICS)	Mining and quarrying (NAICS 2123)
SIC code	1446
EPA region	06

Programs and pollutants

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

Compliance evaluations

2Evaluations since January 1, 2017
2Full compliance evaluations

Date	What EPA recorded	Agency	Programs
October 7, 2024	FCE On-Site	State	40 CFR Part 63 Area Sources; New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
June 24, 2020	FCE Off-Site	State	40 CFR Part 63 Area Sources; 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

What high-priority and federally reportable violations mean.

EPA’s violation history file holds no violation for ICIS-AIR OK0000004006900004 since January 1, 2017.

Enforcement and penalties

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

Informal enforcement

EPA’s informal action file holds no notice or warning for ICIS-AIR OK0000004006900004 since January 1, 2017.

Stack tests

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

EPA’s stack test file holds no test at ICIS-AIR OK0000004006900004 since January 1, 2017.

Watch US SILICA CO / MILL CREEK NORTH PLANT MINE PLANT 39

Privacy

Free from EPA: Detailed Facility Report, ECHO Notify (registry ID 110007385597).

Other air sources in Oklahoma beside US SILICA CO / MILL CREEK NORTH PLANT MINE PLANT 39

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