Clean Water Act discharge permit · NPDES MO0139912
WALNUT CREEK MINE, Hume, MO: NPDES MO0139912 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
WALNUT CREEK MINE, held by Walnut Creek Mine, holds NPDES permit MO0139912, which discharges to Tributary To Walnut Cr.. EPA’s file records it issued August 1, 2022 and expiring July 31, 2027.
WALNUT CREEK MINE, Hume, Missouri: Individual permit MO0139912, held by Walnut Creek Mine; Effective; issued August 1, 2022, term to July 31, 2027; discharges to Tributary to Walnut Cr..
- Solids, total suspended: 8 limits, 7 violations of any kind, 7 effluent exceedances, latest May 31, 2026, largest 176% over the limit.
- Iron, total recoverable: 8 limits, 7 violations of any kind, 7 effluent exceedances, latest June 30, 2026, largest 440% over the limit.
- Solids, settleable: 8 limits, 5 violations of any kind, 5 effluent exceedances, latest July 31, 2026, largest 300% over the limit.
- Sulfate [as S]: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Oxygen demand, chem. [high level] [COD]: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- pH: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Aluminum, total recoverable: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Chloride: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Chlorides + Sulfates: 8 limits, 0 violations of any kind, 0 effluent exceedances.
WALNUT CREEK MINE among its neighbors
EPA’s permit file holds 1 discharge permits in the Mulberry Creek-Marais Des Cygnes River subwatershed (HUC 102901020601), MO0139912 among them. Its county holds 40, 0 of them major permits; MO0139912 is a minor permit.
Identity
| Facility as filed | WALNUT CREEK MINE |
|---|---|
| Permittee as filed | Walnut Creek Mine |
| NPDES ID | MO0139912 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 1, 2022 |
| Expiration date | July 31, 2027 |
| Address | Hume, MO 64752 |
| Receiving water | Tributary to Walnut Cr. |
| Subwatershed | Mulberry Creek-Marais Des Cygnes River (HUC 102901020601) |
| SIC | 1221 – Bituminous Coal And Lignite - Surface |
Effluent limits and exceedances
- 10Pollutants on file
- 10Under a numeric limit
- 3With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 8 | 7 | 7 | May 31, 2026 | 176% over the limit |
| Iron, total recoverable | 8 | 7 | 7 | June 30, 2026 | 440% over the limit |
| Solids, settleable | 8 | 5 | 5 | July 31, 2026 | 300% over the limit |
| Sulfate [as S] | 8 | 0 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 8 | 0 | 0 | ||
| pH | 8 | 0 | 0 | ||
| Aluminum, total recoverable | 8 | 0 | 0 | ||
| Chloride | 8 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 8 | 0 | 0 | ||
| Chlorides + Sulfates | 8 | 0 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0139912.
Inspections
EPA’s inspection file holds no inspection for NPDES MO0139912.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES MO0139912.
Watch this permit
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Nearby on the register
- Discharge permits in Hume
- Every permit record in Hume, A to Z
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.