Clean Water Act discharge permit · NPDES MOG490547

TRENTON READY MIX NORTH SIDE, Trenton, MO: NPDES MOG490547 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
5Pollutants under a numeric limit
2Pollutants with an effluent exceedance

TRENTON READY MIX NORTH SIDE, held by Fischer Concrete Services, LLC, holds NPDES permit MOG490547, which discharges to Tributary To Thompson R.. 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 (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	TRENTON READY MIX NORTH SIDE
Permittee as filed	Fischer Concrete Services, LLC
NPDES ID	MOG490547
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	May 1, 2022
Expiration date	April 30, 2027
Address	Trenton, MO 64683
Receiving water	Tributary to Thompson R.
Subwatershed	Wolf Creek-Thompson River (HUC 102801021403)
SIC	3273 – Ready-Mixed Concrete
Other EPA IDs (FRS)	ICIS-AIR source MO0000002907900028

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

5Pollutants on file
5Under a numeric limit
5With a violation of any kind
2With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
pH	4	22	2	June 30, 2014
Solids, total suspended	4	14	2	March 31, 2017	214% over the limit
Oil and grease [soxhlet extr.] tot.	4	22	0
Flow, in conduit or thru treatment plant	4	20	0
Solids, settleable	4	14	0

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

2Single-event violations

Date	What EPA recorded	Agency
November 13, 2025	Permit Violations - Violation Specified in Comment	ST6
April 17, 2018	WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMP	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.

Watch this permit

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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 MOG490547 there.

Nearby on the register

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

This public-records page covers Clean Water Act NPDES permit MOG490547 for TRENTON READY MIX NORTH SIDE in Trenton, MO, held by Fischer Concrete Services, LLC, with an effluent status of Effective and a Minor discharger class. The page lists 5 pollutants under a numeric limit and 2 pollutants with an effluent exceedance, and gives the issue date as May 1, 2022 and expiration as April 30, 2027.