Clean Water Act discharge permit · NPDES COR429757
MANNON POINT SUBDIVISION, Golden, CO: NPDES COR429757 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MANNON POINT SUBDIVISION, held by TK Morrison Construction, LLC, holds NPDES permit COR429757. EPA’s file records it issued January 26, 2026 and expiring March 31, 2029. 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 | MANNON POINT SUBDIVISION |
|---|---|
| Permittee as filed | TK Morrison Construction, LLC |
| NPDES ID | COR429757 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 26, 2026 |
| Expiration date | March 31, 2029 |
| Address | Golden, CO 80401 |
| Subwatershed | Table Mountain-Clear Creek (HUC 101900040403) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES COR429757.
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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 28, 2026 | Failure to properly install, initiate, or fully implement construction stormwater controls | ST6 |
| May 28, 2026 | Failure to properly operate or maintain construction stormwater controls | ST6 |
| March 18, 2026 | Failure to develop, maintain, or get approval of an adequate SWPPP (construction stormwater) | ST6 |
| March 18, 2026 | Failure to properly install, initiate, or fully implement construction stormwater controls | ST6 |
| March 18, 2026 | Failure to properly conduct construction stormwater inspections | ST6 |
| March 18, 2026 | Failure to properly operate or maintain construction stormwater controls | ST6 |
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 COR429757 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.