NPDES CO0000003 · Clean Water Act
THROIN RESOUCES LLC, Ouray, CO: NPDES CO0000003 discharge permit, effluent exceedances, inspections, penalties
THROIN RESOUCES LLC, Ouray, Colorado: Individual permit CO0000003, held by Thorin Resources LLC; Administratively continued; issued August 1, 2013, term to August 31, 2018; discharges to Sneffles Creek.
2 of the 27 pollutants listed for NPDES CO0000003 have no violation or effluent exceedance.
- Zinc, potentially dissolved: 8 limits, 69 violations of any kind, 53 effluent exceedances, latest January 31, 2026, largest 438% over the limit.
- Lead, potentially dissolvd: 10 limits, 50 violations of any kind, 34 effluent exceedances, latest June 30, 2025, largest 19,621% over the limit.
- Cadmium, potentially dissolvd: 10 limits, 40 violations of any kind, 24 effluent exceedances, latest July 31, 2021, largest 424% over the limit.
- Silver, potentially dissolved: 6 limits, 23 violations of any kind, 7 effluent exceedances, latest July 31, 2026, largest 713% over the limit.
- Manganese, potentially dissolvd: 10 limits, 24 violations of any kind, 5 effluent exceedances, latest May 31, 2015, largest 41% over the limit.
- Static Renewal 7 Day Chronic Ceriodaphnia dubia: 6 limits, 11 violations of any kind, 5 effluent exceedances, latest December 31, 2020, largest 79% over the limit.
- Solids, total suspended: 4 limits, 21 violations of any kind, 3 effluent exceedances, latest May 31, 2021, largest 230% over the limit.
- Iron, total recoverable: 4 limits, 12 violations of any kind, 3 effluent exceedances, latest July 31, 2015, largest 65% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 32 violations of any kind, 1 effluent exceedance, latest April 30, 2023, largest 3% over the limit.
- pH: 4 limits, 11 violations of any kind, 1 effluent exceedance, latest October 31, 2021.
- Cyanide, weak acid, dissociable: 2 limits, 10 violations of any kind, 1 effluent exceedance, latest February 28, 2023, largest 73% over the limit.
- Lead, total [as Pb]: 4 limits, 298 violations of any kind.
- Temperature, water deg. centigrade: 4 limits, 30 violations of any kind.
- Mercury, total [as Hg]: 4 limits, 18 violations of any kind.
- Copper, potentially dissolved: 10 limits, 16 violations of any kind.
- Cadmium, total [as Cd]: 4 limits, 10 violations of any kind.
- Copper, total [as Cu]: 4 limits, 10 violations of any kind.
- Zinc, total [as Zn]: 4 limits, 10 violations of any kind.
- Static Renewal 7 Day Chronic Pimephales promelas: 6 limits, 6 violations of any kind.
- Mercury, total [low level]: 3 limits, 6 violations of any kind.
- Solids, total dissolved: 6 limits, 5 violations of any kind.
- Arsenic, total recoverable: 2 limits, 5 violations of any kind.
- Oil and grease: 2 limits, 5 violations of any kind.
- Chromium, trivalent total recoverable: 2 limits, 5 violations of any kind.
- Oil and grease visual: 2 limits, 5 violations of any kind.
- Nickel, potentially dissolvd: 2 limits.
- Selenium, potentially dissolvd: 2 limits.
Other permits held by Thorin Resources LLC
- OURAY SILVER MINE, Ouray: COR040289, issued 2016-07-20
THROIN RESOUCES LLC among its neighbors
3 discharge permits are in the Canyon Creek subwatershed (HUC 140200060202); CO0000003 is one. Its county: 26, 0 major; CO0000003 is minor permit.
Other permits in the Canyon Creek subwatershed (HUC 140200060202)
- OURAY SILVER MINE, Ouray: COR040289, minor, term to 2021-07-31
- RUBY TRUST MINE, Ouray County: CO0037206, minor, term to 2012-06-30
Identity
| Facility | THROIN RESOUCES LLC |
|---|---|
| Permittee | Thorin Resources LLC |
| NPDES ID | CO0000003 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Minor |
| Facility type | Non-POTW |
| Issued | August 1, 2013 |
| Expires | August 31, 2018 |
| Address | Ouray, CO 81427 |
| Receiving water | Sneffles Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Canyon Creek (HUC 140200060202) |
NPDES CO0000003: effluent limits and exceedances
THROIN RESOUCES LLC (NPDES CO0000003): 27 pollutants on file, 27 limited; 25 with a violation of any kind, 11 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Zinc, potentially dissolved | 8 | 69 | 53 | January 31, 2026 | 438% over the limit |
| Lead, potentially dissolvd | 10 | 50 | 34 | June 30, 2025 | 19,621% over the limit |
| Cadmium, potentially dissolvd | 10 | 40 | 24 | July 31, 2021 | 424% over the limit |
| Silver, potentially dissolved | 6 | 23 | 7 | July 31, 2026 | 713% over the limit |
| Manganese, potentially dissolvd | 10 | 24 | 5 | May 31, 2015 | 41% over the limit |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | 6 | 11 | 5 | December 31, 2020 | 79% over the limit |
| Solids, total suspended | 4 | 21 | 3 | May 31, 2021 | 230% over the limit |
| Iron, total recoverable | 4 | 12 | 3 | July 31, 2015 | 65% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 32 | 1 | April 30, 2023 | 3% over the limit |
| pH | 4 | 11 | 1 | October 31, 2021 | |
| Cyanide, weak acid, dissociable | 2 | 10 | 1 | February 28, 2023 | 73% over the limit |
| Lead, total [as Pb] | 4 | 298 | 0 | ||
| Temperature, water deg. centigrade | 4 | 30 | 0 | ||
| Mercury, total [as Hg] | 4 | 18 | 0 | ||
| Copper, potentially dissolved | 10 | 16 | 0 | ||
| Cadmium, total [as Cd] | 4 | 10 | 0 | ||
| Copper, total [as Cu] | 4 | 10 | 0 | ||
| Zinc, total [as Zn] | 4 | 10 | 0 | ||
| Static Renewal 7 Day Chronic Pimephales promelas | 6 | 6 | 0 | ||
| Mercury, total [low level] | 3 | 6 | 0 | ||
| Solids, total dissolved | 6 | 5 | 0 | ||
| Arsenic, total recoverable | 2 | 5 | 0 | ||
| Oil and grease | 2 | 5 | 0 | ||
| Chromium, trivalent total recoverable | 2 | 5 | 0 | ||
| Oil and grease visual | 2 | 5 | 0 | ||
| Nickel, potentially dissolvd | 2 | 0 | 0 | ||
| Selenium, potentially dissolvd | 2 | 0 | 0 |
NPDES CO0000003: inspections, violations and enforcement
NPDES CO0000003 (THROIN RESOUCES LLC): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES CO0000003
NPDES CO0000003: one email when its EPA record changes — $99/month.
Permits near NPDES CO0000003
NPDES CO0000003: 27 pollutant rows, 0 dated events; ICIS-NPDES download, loaded September 15, 2026.