Clean Water Act discharge permit · NPDES COR426645
REDTAIL RIDGE FILING NO. 1, Louisville, CO: NPDES COR426645 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
REDTAIL RIDGE FILING NO. 1, held by M.A. Mortenson Company, holds NPDES permit COR426645. EPA’s file records it issued February 19, 2025 and expiring March 31, 2029. 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.
What the register holds for REDTAIL RIDGE FILING NO. 1: its NPDES ID, its permit type and status, its dates, its address in Louisville, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR426645.
Identity
| Facility as filed | REDTAIL RIDGE FILING NO. 1 |
|---|---|
| Permittee as filed | M.A. Mortenson Company |
| NPDES ID | COR426645 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 19, 2025 |
| Expiration date | March 31, 2029 |
| Issuing agency | STA |
| Address | Louisville, CO 80027 |
| Subwatershed | Middle Coal Creek (HUC 101900050603) |
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 COR426645.
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 COR426645.
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 COR426645 there.
Nearby on the register
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- Every permit record in Louisville, A to Z
- Discharge permits in Colorado
- Every permit record in Colorado, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.