Clean Water Act discharge permit · NPDES COG081457
VERMILION CREEK - DW, Centennial, CO: NPDES COG081457 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
VERMILION CREEK - DW, held by Mountain-Plains Investment Corporation, holds NPDES permit COG081457, which discharges to Cherry Creek. EPA’s file records it issued March 12, 2026 and expiring May 31, 2028. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | VERMILION CREEK - DW |
|---|---|
| Permittee as filed | Mountain-Plains Investment Corporation |
| NPDES ID | COG081457 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 12, 2026 |
| Expiration date | May 31, 2028 |
| Address | Centennial, CO 80016 |
| Receiving water | Cherry Creek |
| Subwatershed | Happy Canyon Creek-Cherry Creek (HUC 101900030301) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 14Under a numeric limit
- 1With a violation of any kind
- 1With 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 | 8 | 3 | 3 | July 31, 2026 | 369% over the limit |
| pH | 8 | 0 | 0 | ||
| Arsenic, total recoverable | 8 | 0 | 0 | ||
| Iron, total recoverable | 8 | 0 | 0 | ||
| Iron, dissolved [as Fe] | 8 | 0 | 0 | ||
| Manganese, dissolved [as Mn] | 8 | 0 | 0 | ||
| Selenium, potentially dissolvd | 8 | 0 | 0 | ||
| Uranium, total | 8 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 8 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Oil and grease | 4 | 0 | 0 | ||
| Flow, total | 4 | 0 | 0 | ||
| Duration of discharge | 4 | 0 | 0 | ||
| Oil and grease visual | 4 | 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 COG081457.
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 COG081457 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.