Clean Water Act discharge permit · NPDES IL0026859
SCOTT AIR FORCE BASE STP, Scott Air Force Base, IL: NPDES IL0026859 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 31Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
SCOTT AIR FORCE BASE STP, held by SCOTT AIR FORCE BASE, holds NPDES permit IL0026859, which discharges to Unnamed Trib Of Silver Creek. EPA’s file records it issued March 3, 2020 and expiring February 28, 2025. 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 | SCOTT AIR FORCE BASE STP |
|---|---|
| Permittee as filed | SCOTT AIR FORCE BASE |
| NPDES ID | IL0026859 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Federal facility |
| Issued | March 3, 2020 |
| Expiration date | February 28, 2025 |
| Address | Scott Air Force Base, IL 62225 |
| Receiving water | UNNAMED TRIB OF SILVER CREEK |
| Subwatershed | Scott Lake-Silver Creek (HUC 071402040510) |
| SIC | 9711 – National Security |
| Other EPA IDs (FRS) | RCRA handler IL7570024177; ICIS-AIR source IL000163815AAA |
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
- 32Pollutants on file
- 31Under a numeric limit
- 12With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 154 | 29 | 29 | January 31, 2026 | 563% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 12 | 31 | 27 | January 31, 2026 | 770% over the limit |
| Solids, total suspended | 17 | 29 | 23 | March 31, 2022 | 167% over the limit |
| Coliform, fecal general | 8 | 15 | 13 | September 30, 2025 | 4,900% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 6 | 6 | February 28, 2019 | 50% over the limit |
| Oxygen, dissolved [DO] | 18 | 3 | 3 | July 31, 2015 | 6% over the limit |
| Zinc, sludge, total, dry weight [as Zn] | 0 | 1 | 1 | December 31, 2008 | 4% over the limit |
| Copper, total [as Cu] | 2 | 4 | 0 | ||
| pH | 12 | 2 | 0 | ||
| Chlorine, total residual | 4 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 11 | 1 | 0 | ||
| Mercury, total [as Hg] | 2 | 1 | 0 | ||
| Phosphorus, total [as P] | 8 | 0 | 0 | ||
| Nitrogen, total [as N] | 6 | 0 | 0 | ||
| Oil & Grease | 2 | 0 | 0 | ||
| Cyanide, total [as CN] | 2 | 0 | 0 | ||
| Cyanide, free [amenable to chlorination] | 2 | 0 | 0 | ||
| Fluoride, total [as F] | 2 | 0 | 0 | ||
| Arsenic, total [as As] | 2 | 0 | 0 | ||
| Barium, total [as Ba] | 2 | 0 | 0 | ||
| Cadmium, total [as Cd] | 2 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 2 | 0 | 0 | ||
| Chromium, total [as Cr] | 2 | 0 | 0 | ||
| Iron, total [as Fe] | 2 | 0 | 0 | ||
| Iron, dissolved [as Fe] | 2 | 0 | 0 | ||
| Lead, total [as Pb] | 2 | 0 | 0 | ||
| Manganese, total [as Mn] | 2 | 0 | 0 | ||
| Nickel, total [as Ni] | 2 | 0 | 0 | ||
| Silver, total [as Ag] | 2 | 0 | 0 | ||
| Zinc, total [as Zn] | 2 | 0 | 0 | ||
| Selenium, total [as Se] | 2 | 0 | 0 | ||
| Phenolics, 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 14, 2026 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
| January 13, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | 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 IL0026859 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.