Clean Water Act discharge permit · NPDES COR040295
WILLOW CREEK MINE, Lake County, CO: NPDES COR040295 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 2Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
WILLOW CREEK MINE, held by Mt Elbert Mining Co LLC, holds NPDES permit COR040295, which discharges to Herrington Creek - Ditch No 1. EPA’s file records it issued August 26, 2016 and expiring July 31, 2021. 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 | WILLOW CREEK MINE |
|---|---|
| Permittee as filed | Mt Elbert Mining Co LLC |
| NPDES ID | COR040295 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | August 26, 2016 |
| Expiration date | July 31, 2021 |
| Address | Lake County, CO |
| Receiving water | Herrington Creek - Ditch No 1 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Box Creek (HUC 110200010208) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 2Pollutants on file
- 2Under a numeric limit
- 2With 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 |
|---|---|---|---|---|---|
| Zinc, potentially dissolved | 1 | 40 | 0 | ||
| Cadmium, potentially dissolvd | 1 | 40 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COR040295.
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 COR040295.
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 COR040295 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.