Clean Water Act discharge permit · NPDES MO0138231
MISSOURI WALNUT LLC, Neosho, MO: NPDES MO0138231 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
MISSOURI WALNUT LLC, held by Missouri Walnut, LLC, holds NPDES permit MO0138231, which discharges to Tributary To Buffalo Cr.. EPA’s file records it issued March 1, 2020 and expiring September 30, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MISSOURI WALNUT LLC |
|---|---|
| Permittee as filed | Missouri Walnut, LLC |
| NPDES ID | MO0138231 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | March 1, 2020 |
| Expiration date | September 30, 2024 |
| Address | Neosho, MO 64850 |
| Receiving water | Tributary to Buffalo Cr. |
| Subwatershed | Upper Buffalo Creek (HUC 110702080401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 12Pollutants on file
- 11Under a numeric limit
- 12With 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 | 8 | 17 | 1 | March 31, 2021 | |
| Oil and grease [soxhlet extr.] tot. | 5 | 12 | 1 | March 31, 2018 | 30% over the limit |
| Oxygen demand, chem. [high level] [COD] | 5 | 11 | 0 | ||
| Solids, total suspended | 5 | 11 | 0 | ||
| Zinc, total recoverable | 5 | 11 | 0 | ||
| Rainfall | 5 | 10 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 6 | 0 | ||
| Solids, settleable | 2 | 6 | 0 | ||
| Chloride | 2 | 6 | 0 | ||
| Chlorides + Sulfates | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 6 | 0 | ||
| Storm water flow | 5 | 5 | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 29, 2026 | Reporting Violations - Failure to Submit DMRs | ST6 |
| February 14, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| February 14, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| February 13, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| February 13, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| July 19, 2018 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 19, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| August 24, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
| March 21, 2017 | Reporting Violations - Failure to Submit DMRs | ST6 |
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.
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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 MO0138231 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.