Clean Water Act discharge permit · NPDES MO0004871
SIBLEY GENERATING STATION, Sibley, MO: NPDES MO0004871 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 27Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
SIBLEY GENERATING STATION, held by Evergy, Inc., holds NPDES permit MO0004871, which discharges to Tributary To Missouri R.. EPA’s file records it issued December 13, 2019 and expiring December 31, 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 | SIBLEY GENERATING STATION |
|---|---|
| Permittee as filed | Evergy, Inc. |
| NPDES ID | MO0004871 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 13, 2019 |
| Expiration date | December 31, 2024 |
| Address | Sibley, MO 64088 |
| Receiving water | Tributary to Missouri R. |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Cravens Creek-Missouri River (HUC 103001010604) |
| NAICS | 221112 – Fossil Fuel Electric Power Generation |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler MOD000677526 |
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
- 30Pollutants on file
- 27Under a numeric limit
- 8With 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 | 10 | 166 | 55 | September 30, 2021 | 3,913% over the limit |
| pH | 14 | 97 | 18 | June 30, 2021 | |
| Solids, settleable | 0 | 1 | 1 | February 28, 2010 | 100% over the limit |
| Oil and grease [soxhlet extr.] tot. | 10 | 42 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 39 | 0 | ||
| Sulfate [as S] | 4 | 6 | 0 | ||
| Sulfate, total [as SO4] | 0 | 2 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 2 | 0 | ||
| Arsenic, total recoverable | 10 | 0 | 0 | ||
| Selenium, total recoverable | 10 | 0 | 0 | ||
| Boron, total recoverable | 10 | 0 | 0 | ||
| Phosphorus, total [as P] | 6 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 0 | 0 | ||
| Chlorides + Sulfates | 6 | 0 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 4 | 0 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 0 | 0 | ||
| Beryllium, total recoverable [as Be] | 4 | 0 | 0 | ||
| Aluminum, total recoverable | 4 | 0 | 0 | ||
| Chromium, trivalent total recoverable | 4 | 0 | 0 | ||
| Chloride | 4 | 0 | 0 | ||
| Storm water flow | 4 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 3 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 3 | 0 | 0 | ||
| Cyanide, free [amenable to chlorination] | 2 | 0 | 0 | ||
| Molybdenum, total recoverable | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| Mercury, total recoverable | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0004871.
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.
Watch this permit
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Start the watch
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How we handle your data → Privacy
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 MO0004871 there.
Nearby on the register
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- Every permit record in Sibley, 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.