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Clean Water Act discharge permit · NPDES MO0133957

CONAGG COMPANIES LLC AUXVASSE QUARRY S, Auxvasse, MO: NPDES MO0133957 discharge permit, effluent exceedances, inspections, penalties

CONAGG COMPANIES LLC AUXVASSE QUARRY S, held by MERTENS CONSTRUCTION CO, holds NPDES permit MO0133957, which discharges to Bynum Cr.. EPA’s file records it issued October 30, 2007 and expiring October 29, 2012. 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 filedCONAGG COMPANIES LLC AUXVASSE QUARRY S
Permittee as filedMERTENS CONSTRUCTION CO
NPDES IDMO0133957
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedOctober 30, 2007
Expiration dateOctober 29, 2012
Issuing agencyMODNR-Water Protection Program
AddressAuxvasse, MO 65231
Receiving waterBynum Cr.
SubwatershedBynum Creek (HUC 103001021501)

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
pH880
Solids, total suspended880
Oil and grease [soxhlet extr.] tot.880
Flow, in conduit or thru treatment plant860
Solids, settleable260
Rainfall060

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MO0133957.

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 MO0133957.

Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, MO0133957.

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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 MO0133957 there.

Nearby on the register

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