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Clean Water Act discharge permit · NPDES MIS112200

DUNCAN AVIATION, Battle Creek, MI: NPDES MIS112200 discharge permit, effluent exceedances, inspections, penalties

DUNCAN AVIATION, held by Duncan Aviation, holds NPDES permit MIS112200, which discharges to Harts Lake. EPA’s file records it issued May 31, 2026 and expiring April 1, 2031. 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 DUNCAN AVIATION: its NPDES ID, its permit type and status, its dates, its address in Battle Creek, Michigan, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MIS112200.

Identity

Facility as filedDUNCAN AVIATION
Permittee as filedDuncan Aviation
NPDES IDMIS112200
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedMay 31, 2026
Expiration dateApril 1, 2031
Issuing agencyState
AddressBattle Creek, MI 49015
Receiving waterHarts Lake
Other EPA IDs (FRS)RCRA handler MID985650969; ICIS-AIR source MI00000000000N3303

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 MIS112200.

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 MIS112200.

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, MIS112200.

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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 MIS112200 there.

Nearby on the register

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

What this page shows

Of the 30 general permit coverages in Calhoun County, including DUNCAN AVIATION, 96.7% were issued before this permit. Among the Calhoun County coverages, 80.0% have a violation on file.