Clean Water Act discharge permit · NPDES MOG840179
PONCOT HEIRS 13, Linn, MO: NPDES MOG840179 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
PONCOT HEIRS 13, held by Harbison-Walker Refractories Company, holds NPDES permit MOG840179, which discharges to Indian Cr.. EPA’s file records it issued September 6, 2013 and expiring November 12, 2014. 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 | PONCOT HEIRS 13 |
|---|---|
| Permittee as filed | Harbison-Walker Refractories Company |
| NPDES ID | MOG840179 |
| 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 | September 6, 2013 |
| Expiration date | November 12, 2014 |
| Issuing agency | MODNR-Northeast Regional Office |
| Address | Linn, MO 65051 |
| Receiving water | Indian Cr. |
| Subwatershed | Cedar Creek (HUC 103001021601) |
| NAICS | 212325 – Clay and Ceramic and Refractory Minerals Mining |
| SIC | 1459 – Clay And Related Minerals |
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
- 3With 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 | 8 | 2 | 0 | ||
| Solids, settleable | 8 | 2 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 8 | 2 | 0 | ||
| Solids, total suspended | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOG840179.
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 |
|---|---|---|
| September 7, 2017 | Effluent Violations - Unauthorized Discharge | 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 MOG840179 there.
Nearby on the register
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- Every permit record in Linn, A to Z
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.