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Clean Water Act discharge permit · NPDES MIS520034

MPLX TERMINALS LLC-FLINT TERMINAL, Mount Morris, MI: NPDES MIS520034 discharge permit, effluent exceedances, inspections, penalties

MPLX TERMINALS LLC-FLINT TERMINAL, held by MPLX Terminals LLC, holds NPDES permit MIS520034, which discharges to Mott Lake. EPA’s file records it issued December 2, 2021 and expiring April 1, 2025. 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.

What the register holds for MPLX TERMINALS LLC-FLINT TERMINAL: its NPDES ID, its permit type and status, its dates, its address in Mount Morris, Michigan, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MIS520034.

Identity

Facility as filedMPLX TERMINALS LLC-FLINT TERMINAL
Permittee as filedMPLX Terminals LLC
NPDES IDMIS520034
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedDecember 2, 2021
Expiration dateApril 1, 2025
Issuing agencyState
AddressMount Morris, MI 48458
Receiving waterMott Lake
Receiving water impaired303(D) Listed
SubwatershedClark Drain-Flint River (HUC 040802040409)
SIC5171 – Petroleum Bulk Stations & Terminals

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MIS520034.

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 MIS520034.

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, MIS520034.

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  • One permit holder — $99/month
  • One watershed — $2,990/year
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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 MIS520034 there.

Nearby on the register

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

What this page shows

The MPLX TERMINALS LLC-FLINT TERMINAL permit is one of 20 NPDES permits in the Clark Drain-Flint River subwatershed, and it is the only general permit coverage on the register in Mount Morris. The permit records no pollutants under a numeric limit and no effluent exceedances, both recorded as 0.