Clean Water Act discharge permit · NPDES IL0003662
UNION SPECIAL LLC, Huntley, IL: NPDES IL0003662 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
UNION SPECIAL LLC holds NPDES permit IL0003662, which discharges to Storm Sewer Trib To South Branch Kishwaukee River. EPA’s file records it issued October 11, 2016 and expiring October 31, 2021. 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 | UNION SPECIAL LLC |
|---|---|
| Permittee as filed | UNION SPECIAL LLC |
| NPDES ID | IL0003662 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 11, 2016 |
| Expiration date | October 31, 2021 |
| Address | Huntley, IL 60142 |
| Receiving water | STORM SEWER TRIB TO SOUTH BRANCH KISHWAUKEE RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | City of Huntley-South Branch Kishwaukee River (HUC 070900060202) |
| SIC | 3559 – Special Industry Machinery |
| Other EPA IDs (FRS) | RCRA handler ILD005104757; ICIS-AIR source IL000111035AAE |
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
- 4Pollutants on file
- 4Under a numeric limit
- 4With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 1 | 3 | 2 | September 30, 2000 | 940% over the limit |
| pH | 2 | 5 | 1 | July 31, 2000 | |
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 1 | 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 IL0003662.
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 IL0003662 there.
Nearby on the register
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- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.