Clean Water Act discharge permit · NPDES COG315239
I-25 BRIDGES OVER SANTA FE DR, Denver, CO: NPDES COG315239 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 30Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
I-25 BRIDGES OVER SANTA FE DR, held by Hamon Contractors Inc, holds NPDES permit COG315239, which discharges to South Platte River. EPA’s file records it issued June 3, 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 | I-25 BRIDGES OVER SANTA FE DR |
|---|---|
| Permittee as filed | Hamon Contractors Inc |
| NPDES ID | COG315239 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 3, 2011 |
| Expiration date | October 31, 2015 |
| Address | Denver, CO |
| Receiving water | South Platte River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | 101900020904 (HUC 101900020904) |
| SIC | 1622 – Bridge, Tunnel, & Elevated Highway |
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
- 35Pollutants on file
- 30Under a numeric limit
- 5With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 20 | 0 | ||
| Static Renewal 7 Day Chronic Pimephales promelas | 0 | 20 | 0 | ||
| Total volatile priority pollutants | 0 | 2 | 0 | ||
| Base neutrals & acid [Method 625], total | 0 | 2 | 0 | ||
| Metals, total | 0 | 2 | 0 | ||
| pH | 4 | 0 | 0 | ||
| Solids, total suspended | 4 | 0 | 0 | ||
| Iron, total recoverable | 4 | 0 | 0 | ||
| Barium, total recoverable | 4 | 0 | 0 | ||
| Zinc, potentially dissolved | 4 | 0 | 0 | ||
| Copper, potentially dissolved | 4 | 0 | 0 | ||
| Cadmium, potentially dissolvd | 4 | 0 | 0 | ||
| Chloroform | 4 | 0 | 0 | ||
| Toluene | 4 | 0 | 0 | ||
| Benzene | 4 | 0 | 0 | ||
| Ethylbenzene | 4 | 0 | 0 | ||
| Trichloroethylene | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| 1,4-Dioxane | 4 | 0 | 0 | ||
| Cadmium, total recoverable | 3 | 0 | 0 | ||
| Tetrachloroethylene | 3 | 0 | 0 | ||
| Nitrate nitrogen, dry weight | 2 | 0 | 0 | ||
| Arsenic, total recoverable | 2 | 0 | 0 | ||
| Manganese, dissolved [as Mn] | 2 | 0 | 0 | ||
| Manganese, potentially dissolvd | 2 | 0 | 0 | ||
| Oil and grease | 2 | 0 | 0 | ||
| Chromium, trivalent total recoverable | 2 | 0 | 0 | ||
| Radium 226 + radium 228, total | 2 | 0 | 0 | ||
| Methyl tert-butyl ether [MTBE] | 2 | 0 | 0 | ||
| Uranium, total | 2 | 0 | 0 | ||
| 1,1-Dichloroethylene | 2 | 0 | 0 | ||
| 1,1,1-Trichloroethane | 2 | 0 | 0 | ||
| Vinyl chloride | 2 | 0 | 0 | ||
| Sulfate | 2 | 0 | 0 | ||
| Oil and grease visual | 2 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG315239.
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 COG315239.
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 COG315239 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.