Clean Water Act discharge permit · NPDES CO0037206
RUBY TRUST MINE, Ouray County, CO: NPDES CO0037206 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
RUBY TRUST MINE, held by Mount Sneffels Mining Co LLC, holds NPDES permit CO0037206, which discharges to Sneffels Creek. EPA’s file records it issued May 25, 2007 and expiring June 30, 2012. 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 | RUBY TRUST MINE |
|---|---|
| Permittee as filed | Mount Sneffels Mining Co LLC |
| NPDES ID | CO0037206 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 25, 2007 |
| Expiration date | June 30, 2012 |
| Address | Ouray County, CO 81427 |
| Receiving water | SNEFFELS CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Canyon Creek (HUC 140200060202) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 34Pollutants on file
- 17Under a numeric limit
- 34With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 111 | 55 | July 31, 2026 | 99,999% over the limit |
| Solids, total suspended | 2 | 27 | 3 | July 31, 2023 | 70% over the limit |
| Copper, potentially dissolved | 2 | 16 | 3 | June 30, 2024 | 21% over the limit |
| Lead, potentially dissolvd | 2 | 26 | 2 | March 31, 2010 | 205% over the limit |
| Zinc, potentially dissolved | 2 | 13 | 1 | March 31, 2010 | 4% over the limit |
| %Effect Static Renewal 7Day Chronic Pimephales promelas | 4 | 69 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 4 | 68 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 4 | 68 | 0 | ||
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 68 | 0 | ||
| pH | 2 | 24 | 0 | ||
| Temperature, water deg. centigrade | 0 | 14 | 0 | ||
| Lead, total [as Pb] | 0 | 14 | 0 | ||
| Solids, total dissolved | 2 | 13 | 0 | ||
| Silver, potentially dissolved | 2 | 10 | 0 | ||
| Cadmium, potentially dissolvd | 2 | 10 | 0 | ||
| Mercury, total [as Hg] | 4 | 9 | 0 | ||
| Selenium, potentially dissolvd | 2 | 9 | 0 | ||
| Mercury, total recoverable | 0 | 8 | 0 | ||
| Oil and grease | 1 | 6 | 0 | ||
| Oil and grease visual | 1 | 6 | 0 | ||
| Cadmium, total [as Cd] | 0 | 6 | 0 | ||
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 6 | 0 | ||
| Static Renewal 7 Day Chronic Pimephales promelas | 0 | 6 | 0 | ||
| Copper, total [as Cu] | 0 | 5 | 0 | ||
| Zinc, total [as Zn] | 0 | 5 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 0 | 5 | 0 | ||
| Manganese, potentially dissolvd | 0 | 3 | 0 | ||
| Nickel, potentially dissolvd | 0 | 3 | 0 | ||
| Chromium, trivalent total recoverable | 0 | 3 | 0 | ||
| Cyanide, weak acid, dissociable | 0 | 2 | 0 | ||
| Arsenic, total recoverable | 0 | 2 | 0 | ||
| Iron, total recoverable | 0 | 2 | 0 | ||
| Arsenic, potentially dissolved | 0 | 1 | 0 | ||
| Chromium, trivalent, potentially dissolvd | 0 | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 1, 2019 | Monitoring Violations - Failure to Monitor for Toxicity Requirements | 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 CO0037206 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.