Clean Water Act discharge permit · NPDES MOG491353
THAYER QUARRY, Thayer, MO: NPDES MOG491353 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
THAYER QUARRY, held by Capital Quarries Co Inc, holds NPDES permit MOG491353, which discharges to Tributary To Warm Fk. Spring R.. EPA’s file records it issued May 1, 2017 and expiring April 30, 2022. 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 | THAYER QUARRY |
|---|---|
| Permittee as filed | Capital Quarries Co Inc |
| NPDES ID | MOG491353 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| 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, 2017 |
| Expiration date | April 30, 2022 |
| Address | Thayer, MO 65791 |
| Receiving water | Tributary to Warm Fk. Spring R. |
| Subwatershed | Twomile Creek-Warm Fork Spring River (HUC 110100100204) |
| NAICS | 212312 – Crushed and Broken Limestone Mining and Quarrying |
| SIC | 1422 – Crushed And Broken Limestone |
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
- 5Pollutants on file
- 5Under a numeric limit
- 5With a violation of any kind
- 0With 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 | 8 | 0 | ||
| Solids, total suspended | 4 | 8 | 0 | ||
| Solids, settleable | 4 | 8 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 4 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 8 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOG491353.
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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 18, 2021 | Reporting Violations - Failure to Submit DMRs | 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 MOG491353 there.
Nearby on the register
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.