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Clean Water Act discharge permit · NPDES MIS111331

AJAX MATERIALS CORP-PLANT 7-W, Warren, MI: NPDES MIS111331 discharge permit, effluent exceedances, inspections, penalties

AJAX MATERIALS CORP-PLANT 7-W, held by Ajax Materials Corporation-Plant 7, holds NPDES permit MIS111331, which discharges to Bear Creek. EPA’s file records it issued October 8, 2021 and expiring April 1, 2026.

AJAX MATERIALS CORP-PLANT 7-W, Warren, Michigan: Coverage under a general permit MIS111331, held by Ajax Materials Corporation-Plant 7; Effective; issued October 8, 2021, term to April 1, 2026, by State; discharges to Bear Creek.

AJAX MATERIALS CORP-PLANT 7-W among its neighbors

EPA’s permit file holds 53 discharge permits in the McCoy Drain-Red Run subwatershed (HUC 040900030205), MIS111331 among them.

Other permits in the McCoy Drain-Red Run subwatershed (HUC 040900030205)

What the register holds for AJAX MATERIALS CORP-PLANT 7-W: its NPDES ID, its permit type and status, its dates, its address in Warren, Michigan, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MIS111331.

Identity

Facility as filedAJAX MATERIALS CORP-PLANT 7-W
Permittee as filedAjax Materials Corporation-Plant 7
NPDES IDMIS111331
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 8, 2021
Expiration dateApril 1, 2026
Issuing agencyState
AddressWarren, MI 48091
Receiving waterBear Creek
Receiving water impaired303(D) Listed
SubwatershedMcCoy Drain-Red Run (HUC 040900030205)
SIC2951 – Asphalt Paving Mixtures And Blocks

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MIS111331.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MIS111331.

Inspections

EPA’s inspection file holds no inspection for NPDES MIS111331.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MIS111331.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MIS111331.

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Nearby on the register

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

What this page shows

AJAX MATERIALS CORP-PLANT 7-W is one of 40 general permit coverages in Warren, Michigan, on the EPA's NPDES register, and 22.5% of those 40 coverages have a violation on file. The permit also sits within the McCoy Drain-Red Run subwatershed, which holds 53 NPDES permits including this one, and 60.0% of the 40 Warren general permit coverages were issued earlier than this one. The permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance, both counted as 0.