Clean Water Act discharge permit · NPDES MO0132489
POET BIOREFINING - LADDONIA, Laddonia, MO: NPDES MO0132489 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 18Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
POET BIOREFINING - LADDONIA, held by Poet Biorefining - Laddonia, LLC, holds NPDES permit MO0132489, which discharges to Tributary To Middle Lick Creek. EPA’s file records it issued September 5, 2019 and expiring September 30, 2024. 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 | POET BIOREFINING - LADDONIA |
|---|---|
| Permittee as filed | Poet Biorefining - Laddonia, LLC |
| NPDES ID | MO0132489 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | September 5, 2019 |
| Expiration date | September 30, 2024 |
| Address | Laddonia, MO 63352 |
| Receiving water | Tributary to Middle Lick Creek |
| Subwatershed | East Lick Creek (HUC 071100070102) |
| SIC | 2869 – Industrial Organic Chemicals |
| Other EPA IDs (FRS) | ICIS-AIR source MO0000002900700054 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 20Pollutants on file
- 18Under a numeric limit
- 13With a violation of any kind
- 12With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 2 | 365 | 365 | June 30, 2018 | 3,650% over the limit |
| Chlorides + Sulfates | 4 | 13 | 13 | November 30, 2010 | 17% over the limit |
| pH | 8 | 5 | 5 | May 31, 2019 | |
| Iron, total recoverable | 4 | 4 | 4 | April 30, 2025 | 78% over the limit |
| Solids, settleable | 2 | 4 | 4 | May 31, 2012 | 400% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 4 | 4 | June 30, 2015 | 29% over the limit |
| Chloride | 4 | 71 | 3 | June 30, 2016 | 12% over the limit |
| Solids, total suspended | 2 | 3 | 3 | December 31, 2021 | 84% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 3 | 3 | October 31, 2011 | 40% over the limit |
| Boron, total recoverable | 0 | 2 | 2 | February 28, 2026 | 6% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 1 | 1 | October 31, 2006 | 50% over the limit |
| Oxygen demand, chem. [high level] [COD] | 2 | 1 | 1 | May 31, 2022 | 710% over the limit |
| Conductivity, net | 0 | 175 | 0 | ||
| Sulfate [as S] | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| Aluminum, total recoverable | 2 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 0 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 23, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| July 23, 2026 | Reporting Violations - Improper/ Incorrect Reporting | 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.