Passage Data · Check a report · Use it from your AI
Silver Ores, Ouray, Colorado. NPDES permit CO0000003 expired Aug 31, 2018; its limits still apply. Last 12 months: over a limit 5 times (last July 2026), 48 required values missing, 3 of 34 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| November 2025 | 002 | Zinc, potentially dissolved, 30-day average | 134 ug/L | ≤ 126 ug/L | 6% |
| December 2025 | 002 | Zinc, potentially dissolved, 30-day average | 161 ug/L | ≤ 126 ug/L | 28% |
| December 2025 | 002 | Zinc, potentially dissolved, daily maximum | 172 ug/L | ≤ 166 ug/L | 4% |
| January 2026 | 002 | Zinc, potentially dissolved, 30-day average | 130 ug/L | ≤ 126 ug/L | 3% |
| July 2026 | 001 | Silver, potentially dissolved, 30-day average | .235 ug/L | ≤ .08 ug/L | 194% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | maximum weekly average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 20 mg/L | all year | 001 |
| Solids, total suspended | maximum 7-day average | ≤ 30 mg/L | all year | 001 |
| Cyanide, weak acid, dissociable | daily maximum | ≤ 5.6 ug/L | all year | 001 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 1000 ug/L | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 1204 ug/L | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 1276 ug/L | all year | 001 |
| Cadmium, total [as Cd] | 30-day average | ≤ 50 ug/L | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | ≤ 100 ug/L | all year | 001 |
| Copper, total [as Cu] | 30-day average | ≤ 150 ug/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ 300 ug/L | all year | 001 |
| Lead, total [as Pb] | 30-day average | ≤ 300 ug/L | all year | 001 |
| Lead, total [as Pb] | daily maximum | ≤ 600 ug/L | all year | 001 |
| Zinc, total [as Zn] | 30-day average | ≤ 750 ug/L | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 1500 ug/L | all year | 001 |
| Zinc, potentially dissolved | 30-day average | ≤ 101 ug/L | all year | 001 |
| Zinc, potentially dissolved | 30-day average | ≤ 117 ug/L | all year | 001 |
| Zinc, potentially dissolved | 30-day average | ≤ 126 ug/L | all year | 001 |
| Zinc, potentially dissolved | daily maximum | ≤ 116 ug/L | all year | 001 |
| Zinc, potentially dissolved | daily maximum | ≤ 154 ug/L | all year | 001 |
| Zinc, potentially dissolved | daily maximum | ≤ 166 ug/L | all year | 001 |
| Silver, potentially dissolved | 30-day average | ≤ .055 ug/L | all year | 001 |
| Silver, potentially dissolved | 30-day average | ≤ .08 ug/L | all year | 001 |
| Silver, potentially dissolved | daily maximum | ≤ 1.5 ug/L | all year | 001 |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Copper, potentially dissolved | 30-day average | ≤ 7.2 ug/L | all year | 001 |
| Copper, potentially dissolved | 30-day average | ≤ 8.6 ug/L | all year | 001 |
| Copper, potentially dissolved | 30-day average | ≤ 12 ug/L | all year | 001 |
| Copper, potentially dissolved | 30-day average | ≤ 12.5 ug/L | all year | 001 |
| Copper, potentially dissolved | daily maximum | ≤ 11 ug/L | all year | 001 |
| Copper, potentially dissolved | daily maximum | ≤ 13 ug/L | all year | 001 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, potentially dissolvd | 30-day average | ≤ .35 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | 30-day average | ≤ .41 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | 30-day average | ≤ .44 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | 30-day average | ≤ .74 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | daily maximum | ≤ 1.4 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | daily maximum | ≤ 1.6 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | daily maximum | ≤ 2.1 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | daily maximum | ≤ 2.2 ug/L | all year | 001 |
| Lead, potentially dissolvd | 30-day average | ≤ 1.9 ug/L | all year | 001 |
| Lead, potentially dissolvd | 30-day average | ≤ 2.4 ug/L | all year | 001 |
| Lead, potentially dissolvd | 30-day average | ≤ 2.6 ug/L | all year | 001 |
| Lead, potentially dissolvd | 30-day average | ≤ 2.6 ug/L | all year | 001 |
| Lead, potentially dissolvd | daily maximum | ≤ 49 ug/L | all year | 001 |
| Lead, potentially dissolvd | daily maximum | ≤ 62 ug/L | all year | 001 |
| Lead, potentially dissolvd | daily maximum | ≤ 91 ug/L | all year | 001 |
| Lead, potentially dissolvd | daily maximum | ≤ 100 ug/L | all year | 001 |
| Manganese, potentially dissolvd | 30-day average | ≤ 1519 ug/L | all year | 001 |
| Manganese, potentially dissolvd | 30-day average | ≤ 1627 ug/L | all year | 001 |
| Manganese, potentially dissolvd | 30-day average | ≤ 1960 ug/L | all year | 001 |
| Manganese, potentially dissolvd | 30-day average | ≤ 2067 ug/L | all year | 001 |
| Manganese, potentially dissolvd | daily maximum | ≤ 2749 ug/L | all year | 001 |
| Manganese, potentially dissolvd | daily maximum | ≤ 2945 ug/L | all year | 001 |
| Manganese, potentially dissolvd | daily maximum | ≤ 3828 ug/L | all year | 001 |
| Manganese, potentially dissolvd | daily maximum | ≤ 4127 ug/L | all year | 001 |
| Nickel, potentially dissolvd | 30-day average | ≤ 47 ug/L | all year | 001 |
| Nickel, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Selenium, potentially dissolvd | 30-day average | ≤ 52 ug/L | all year | 001 |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| Chromium, trivalent total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 1.75 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Mercury, total [low level] | 30-day average | report only (ug/L) | all year | 001 |
| Mercury, total [low level] | 30-day average | ≤ .011 ug/L | all year | 001 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Mercury, total [as Hg] | 30-day average | ≤ 1 ug/L | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ 2 ug/L | all year | 001 |
| Oil and grease visual | instantaneous maximum | report only (abst=0;prst=1) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | ≥ 89 tox chronic | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | ≥ 89 tox chronic | all year | 001 |
| Temperature, water deg. centigrade | maximum weekly average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 20 mg/L | all year | 002 |
| Solids, total suspended | maximum 7-day average | ≤ 30 mg/L | all year | 002 |
| Cyanide, weak acid, dissociable | daily maximum | ≤ 5.6 ug/L | all year | 002 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Iron, total recoverable | 30-day average | ≤ 1276 ug/L | all year | 002 |
| Cadmium, total [as Cd] | 30-day average | ≤ 50 ug/L | all year | 002 |
| Cadmium, total [as Cd] | daily maximum | ≤ 100 ug/L | all year | 002 |
| Copper, total [as Cu] | 30-day average | ≤ 150 ug/L | all year | 002 |
| Copper, total [as Cu] | daily maximum | ≤ 300 ug/L | all year | 002 |
| Lead, total [as Pb] | 30-day average | ≤ 300 ug/L | all year | 002 |
| Lead, total [as Pb] | daily maximum | ≤ 600 ug/L | all year | 002 |
| Zinc, total [as Zn] | 30-day average | ≤ 750 ug/L | all year | 002 |
| Zinc, total [as Zn] | daily maximum | ≤ 1500 ug/L | all year | 002 |
| Zinc, potentially dissolved | 30-day average | ≤ 126 ug/L | all year | 002 |
| Zinc, potentially dissolved | daily maximum | ≤ 166 ug/L | all year | 002 |
| Silver, potentially dissolved | 30-day average | ≤ .08 ug/L | all year | 002 |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | 002 |
| Copper, potentially dissolved | 30-day average | ≤ 12.5 ug/L | all year | 002 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 002 |
| Cadmium, potentially dissolvd | 30-day average | ≤ .74 ug/L | all year | 002 |
| Cadmium, potentially dissolvd | daily maximum | ≤ 2.2 ug/L | all year | 002 |
| Lead, potentially dissolvd | 30-day average | ≤ 2.6 ug/L | all year | 002 |
| Lead, potentially dissolvd | daily maximum | ≤ 100 ug/L | all year | 002 |
| Manganese, potentially dissolvd | 30-day average | ≤ 2067 ug/L | all year | 002 |
| Manganese, potentially dissolvd | daily maximum | ≤ 4127 ug/L | all year | 002 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 002 |
| Chromium, trivalent total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 1.75 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Mercury, total [low level] | 30-day average | ≤ .011 ug/L | all year | 002 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 002 |
| Mercury, total [as Hg] | 30-day average | ≤ 1 ug/L | all year | 002 |
| Mercury, total [as Hg] | daily maximum | ≤ 2 ug/L | all year | 002 |
| Oil and grease visual | instantaneous maximum | report only (abst=0;prst=1) | all year | 002 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | all year | 002 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 002 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | ≥ 89 tox chronic | all year | 002 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | all year | 002 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | all year | 002 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | ≥ 89 tox chronic | all year | 002 |
Cited limits by parameter: Colorado's rules and the federal ones.
Same industry: the 30 Metal Mining permits in Colorado.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/CO0000003 · MCP: https://passage-data.com/mcp