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Clean Water Act discharge permit · NPDES MIS210471

WALSTROM MARINE-CHEBOYGAN, Cheboygan, MI: NPDES MIS210471 discharge permit, effluent exceedances, inspections, penalties

WALSTROM MARINE-CHEBOYGAN, held by Walstrom Marine, holds NPDES permit MIS210471, which discharges to Cheboygan River. EPA’s file records it issued December 17, 2021 and expiring March 31, 2027. 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.

Identity

Facility as filedWALSTROM MARINE-CHEBOYGAN
Permittee as filedWalstrom Marine
NPDES IDMIS210471
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedDecember 17, 2021
Expiration dateMarch 31, 2027
Issuing agencyState
AddressCheboygan, MI 49721
Receiving waterCheboygan River
SubwatershedTannery Gully-Cheboygan River (HUC 040700040404)
Other EPA IDs (FRS)RCRA handler MI0001006063

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 MIS210471.

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

DateWhat EPA recordedAgency
August 6, 2025Failure to develop, maintain, or get approval of an adequate SWPPP (industrial stormwater)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 MIS210471 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 NPDES discharge permit MIS210471 for WALSTROM MARINE-CHEBOYGAN in Cheboygan, MI, which discharges to the Cheboygan River within the Tannery Gully-Cheboygan River watershed, HUC 040700040404. The permit is listed as Effective, with a Minor discharger class, and the facility records show 0 pollutants on file, 0 under a numeric limit, and 0 with an effluent exceedance.