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Clean Water Act discharge permit · NPDES MIS110420

AJAX MATERIALS-PLT 2, Auburn Hills, MI: NPDES MIS110420 discharge permit, effluent exceedances, inspections, penalties

AJAX MATERIALS-PLT 2, held by Ajax Materials Corporation-Plant 2, holds NPDES permit MIS110420, which discharges to Galloway Ditch. EPA’s file records it issued October 8, 2021 and expiring April 1, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for AJAX MATERIALS-PLT 2: its NPDES ID, its permit type and status, its dates, its address in Auburn Hills, Michigan, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MIS110420.

Identity

Facility as filedAJAX MATERIALS-PLT 2
Permittee as filedAjax Materials Corporation-Plant 2
NPDES IDMIS110420
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
AddressAuburn Hills, MI 48326
Receiving waterGalloway Ditch
Receiving water impaired303(D) Listed
SubwatershedGalloway Creek-Clinton River (HUC 040900030111)
Other EPA IDs (FRS)RCRA handler MID980272330; ICIS-AIR source MI00000000000B1956

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MIS110420.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MIS110420.

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.

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, MIS110420.

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How we handle your data → Privacy

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 MIS110420 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers Clean Water Act NPDES permit MIS110420 for AJAX MATERIALS-PLT 2 in Auburn Hills, MI, held by Ajax Materials Corporation-Plant 2 and discharging to Galloway Ditch. The register lists the permit as Effective, a Minor Discharger class facility, with 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.