Clean Water Act discharge permit · NPDES COG315240
DENVER UNION STATION, Denver County, CO: NPDES COG315240 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 18Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
DENVER UNION STATION, held by Kiewit Western Co, holds NPDES permit COG315240, which discharges to South Platte River. EPA’s file records it issued July 5, 2011 and expiring October 31, 2015. 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 | DENVER UNION STATION |
|---|---|
| Permittee as filed | Kiewit Western Co |
| NPDES ID | COG315240 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 5, 2011 |
| Expiration date | October 31, 2015 |
| Address | Denver County, CO 80202 |
| Receiving water | South Platte River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Cherry Creek-South Platte River (HUC 101900030304) |
| SIC | 1799 – Special Trade Contractors |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 18Pollutants on file
- 18Under a numeric limit
- 5With a violation of any kind
- 4With 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 | 4 | 2 | February 29, 2012 | 216% over the limit |
| Tetrachloroethylene | 2 | 3 | 2 | November 30, 2011 | 45% over the limit |
| Chrysene | 1 | 3 | 1 | October 31, 2011 | 5,163% over the limit |
| Benzo[a]anthracene | 1 | 3 | 1 | October 31, 2011 | 2,532% over the limit |
| Arsenic, total recoverable | 1 | 1 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Solids, total suspended | 2 | 0 | 0 | ||
| Iron, total recoverable | 2 | 0 | 0 | ||
| Barium, total recoverable | 2 | 0 | 0 | ||
| Manganese, dissolved [as Mn] | 2 | 0 | 0 | ||
| Naphthalene | 2 | 0 | 0 | ||
| Trichloroethylene | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Aluminum, total recoverable | 1 | 0 | 0 | ||
| Oil and grease | 1 | 0 | 0 | ||
| Chromium, trivalent total recoverable | 1 | 0 | 0 | ||
| Styrene | 1 | 0 | 0 | ||
| Oil and grease visual | 1 | 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 COG315240.
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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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 COG315240 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.