Clean Water Act discharge permit · NPDES COG604491
DENVER EXPANSION PROJECT, Deer Trail, CO: NPDES COG604491 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
DENVER EXPANSION PROJECT, held by Magellan Pipeline Company LP, holds NPDES permit COG604491, which discharges to Groundwater. EPA’s file records it issued March 19, 2026 and expiring December 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 | DENVER EXPANSION PROJECT |
|---|---|
| Permittee as filed | Magellan Pipeline Company LP |
| NPDES ID | COG604491 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 19, 2026 |
| Expiration date | December 31, 2028 |
| Address | Deer Trail, CO 80105 |
| Receiving water | groundwater |
| Subwatershed | Community of Watkins-Box Elder Creek (HUC 101900030706) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 8With 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 dissolved | 3 | 7 | 1 | July 31, 2026 | 91% over the limit |
| pH | 6 | 12 | 0 | ||
| Iron, dissolved [as Fe] | 3 | 6 | 0 | ||
| Oil and grease | 3 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 3 | 6 | 0 | ||
| Flow, total | 3 | 6 | 0 | ||
| Duration of discharge | 3 | 6 | 0 | ||
| Oil and grease visual | 3 | 6 | 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 COG604491.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, COG604491.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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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 COG604491 there.
Nearby on the register
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- Every permit record in Deer Trail, A to Z
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- Every permit record in Colorado, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.