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Clean Water Act discharge permit · NPDES MOG491087

SEMO OPERATING COMPANY, Cape Girardeau, MO: NPDES MOG491087 discharge permit, effluent exceedances, inspections, penalties

SEMO OPERATING COMPANY, held by SEMO Operating Company LLC, holds NPDES permit MOG491087, which discharges to Ramsey Branch. EPA’s file records it issued May 1, 2022 and expiring April 30, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedSEMO OPERATING COMPANY
Permittee as filedSEMO Operating Company LLC
NPDES IDMOG491087
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedMay 1, 2022
Expiration dateApril 30, 2027
AddressCape Girardeau, MO 63701
Receiving waterRamsey Branch
SubwatershedJuden Creek-Mississippi River (HUC 071401050503)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended0204December 31, 2024143% over the limit
pH0213September 30, 2024
Solids, settleable0191September 30, 202430% over the limit
Flow, in conduit or thru treatment plant0180
Oil and grease [soxhlet extr.] tot.0140

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
March 31, 2025Effluent Violations - Numeric effluent violationST6
January 26, 2024Effluent Violations - Numeric effluent violationST6
November 25, 2020WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMPST6
November 25, 2020Permit Violations - Violation Specified in CommentST6
November 9, 2017Effluent Violations - Numeric effluent violationST6
November 9, 2017Management Practice Violations - Improper Operation and MaintenanceST6
November 9, 2017WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMPST6

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, MOG491087.

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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 MOG491087 there.

Nearby on the register

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