Clean Water Act discharge permit · NPDES MIG250030

KNAUF INSULATION, INC., Albion, MI: NPDES MIG250030 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
4Pollutants under a numeric limit
0Pollutants with an effluent exceedance

KNAUF INSULATION, INC., held by Knauf Insulation, Inc., holds NPDES permit MIG250030, which discharges to North Branch Kalamazoo River. EPA’s file records it issued March 5, 2019 and expiring April 1, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	KNAUF INSULATION, INC.
Permittee as filed	Knauf Insulation, Inc.
NPDES ID	MIG250030
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	March 5, 2019
Expiration date	April 1, 2023
Issuing agency	State
Address	Albion, MI 49224
Receiving water	North Branch Kalamazoo River
NAICS	327993 – Mineral Wool Manufacturing
SIC	3296 – Mineral Wool
Other EPA IDs (FRS)	RCRA handler MID097809909; ICIS-AIR source MI00000000000B7205

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

4Pollutants on file
4Under a numeric limit
4With a violation of any kind
0With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind
Flow, in conduit or thru treatment plant	2	40
pH	2	30
Temperature, water deg. fahrenheit	1	20
Outfall observation,visual, y/n response	1	20

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MIG250030.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

10Single-event violations

Date	What EPA recorded	Agency
June 24, 2025	Management Practice Violations - Improper Operation and Maintenance	ST6
June 21, 2024	Reporting Violations - Late Submittal of DMRs	ST6
January 21, 2024	Reporting Violations - Late Submittal of DMRs	ST6
November 21, 2022	Reporting Violations - Late Submittal of DMRs	ST6
November 21, 2020	Reporting Violations - Late Submittal of DMRs	ST6
August 21, 2020	Reporting Violations - Late Submittal of DMRs	ST6
May 21, 2020	Reporting Violations - Late Submittal of DMRs	ST6
July 21, 2019	Reporting Violations - Late Submittal of DMRs	ST6
June 21, 2019	Reporting Violations - Late Submittal of DMRs	ST6
May 21, 2019	Reporting Violations - Late Submittal of DMRs	ST6

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MIG250030 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This page is a public-records entry for NPDES permit MIG250030, held by Knauf Insulation, Inc. at Albion, MI, which discharges to the North Branch Kalamazoo River. The permit is listed as administratively continued, with a minor discharger class of 4, zero pollutants under a numeric limit, and zero pollutants with an effluent exceedance. EPA's file shows issuance on March 5, 2019 and expiration on April 1, 2023.