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Gold Ores, major discharger, Park County, Colorado. NPDES permit CO0038334 expired Aug 31, 2024; its limits still apply. Last 12 months: over a limit 11 times (last August 2026), 1 of 28 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Zinc, potentially dissolved, 30-day average | 203 ug/L | ≤ 165 ug/L | 23% |
| November 2025 | Zinc, potentially dissolved, 30-day average | 225 ug/L | ≤ 165 ug/L | 36% |
| November 2025 | Zinc, potentially dissolved, daily maximum | 240 ug/L | ≤ 235 ug/L | 2% |
| December 2025 | Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum value | 50 tox chronic | ≥ 99 tox chronic | 49% |
| December 2025 | Zinc, potentially dissolved, 30-day average | 256 ug/L | ≤ 165 ug/L | 55% |
| December 2025 | Zinc, potentially dissolved, daily maximum | 380 ug/L | ≤ 235 ug/L | 62% |
| April 2026 | Silver, potentially dissolved, 30-day average | < .25 ug/L | ≤ .092 ug/L | 172% |
| July 2026 | Cadmium, potentially dissolvd, 30-day average | < .5 ug/L | ≤ .46 ug/L | 9% |
| July 2026 | Silver, potentially dissolved, 30-day average | < .5 ug/L | ≤ .092 ug/L | 443% |
| August 2026 | Zinc, potentially dissolved, 30-day average | 220 ug/L | ≤ 165 ug/L | 33% |
| August 2026 | Zinc, potentially dissolved, daily maximum | 390 ug/L | ≤ 235 ug/L | 66% |
| 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 | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 001 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | 001 |
| Chloride [as Cl] | 30-day average | report only (mg/L) | all year | 001 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Arsenic, total recoverable | 30-day average | ≤ 14 ug/L | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 4000 ug/L | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 1012 ug/L | all year | 001 |
| Iron, total recoverable | rolling average | report only (ug/L) | all year | 001 |
| Iron, total recoverable | rolling average | ≤ 337 ug/L | all year | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Jan | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Feb | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Mar | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Apr | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | May | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Jun | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Jul | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Aug | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Sep | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Oct | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Nov | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | Dec | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Jan | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Feb | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Mar | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Apr | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | May | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Jun | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Jul | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Aug | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Sep | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Oct | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Nov | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 306 ug/L | Dec | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 3.4 lb/d | Apr | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 3.9 lb/d | May | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 7.7 lb/d | Jun | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 6.5 lb/d | Jul | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 5.9 lb/d | Aug | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 5.3 lb/d | Sep | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 4.8 lb/d | Oct | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 3.4 lb/d | Apr | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 3.9 lb/d | May | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 7.7 lb/d | Jun | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 6.5 lb/d | Jul | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 5.9 lb/d | Aug | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 5.3 lb/d | Sep | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 4.8 lb/d | Oct | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Jan | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Feb | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Mar | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Apr | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | May | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Jun | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Jul | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Aug | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Sep | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Oct | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Nov | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 3000 ug/L | Dec | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Jan | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Feb | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Mar | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Apr | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | May | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Jun | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Jul | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Aug | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Sep | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Oct | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 53 ug/L | Nov | 001 |
| Manganese, dissolved [as Mn] | daily maximum | ≤ 53 ug/L | Dec | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .61 lb/d | Jan | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .61 lb/d | Feb | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .57 lb/d | Mar | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .57 lb/d | Apr | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .66 lb/d | May | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 1.33 lb/d | Jun | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 1.11 lb/d | Jul | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 1.01 lb/d | Aug | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .9 lb/d | Sep | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .82 lb/d | Oct | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .74 lb/d | Nov | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .68 lb/d | Dec | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .61 lb/d | Jan | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .61 lb/d | Feb | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .57 lb/d | Mar | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .57 lb/d | Apr | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .66 lb/d | May | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 1.33 lb/d | Jun | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 1.11 lb/d | Jul | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ 1.01 lb/d | Aug | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .82 lb/d | Sep | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .82 lb/d | Oct | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .74 lb/d | Nov | 001 |
| Manganese, dissolved [as Mn] | 30-day average | ≤ .68 lb/d | Dec | 001 |
| Nickel, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Nickel, total recoverable | 30-day average | ≤ 101 ug/L | all year | 001 |
| Cadmium, total recoverable | 30-day average | ≤ 5.1 ug/L | all year | 001 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, total recoverable | rolling average | report only (ug/L) | all year | 001 |
| Cadmium, total recoverable | rolling average | ≤ 1.5 ug/L | all year | 001 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Lead, total recoverable | daily maximum | ≤ 51 ug/L | all year | 001 |
| Lead, total recoverable | rolling average | report only (ug/L) | all year | 001 |
| Lead, total recoverable | rolling average | ≤ 11 ug/L | all year | 001 |
| Chromium, total recoverable | daily maximum | ≤ 50 ug/L | all year | 001 |
| Molybdenum, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | 30-day average | report only (ug/L) | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | rolling average | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | 30-day average | ≤ 165 ug/L | all year | 001 |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | daily maximum | ≤ 235 ug/L | all year | 001 |
| Silver, potentially dissolved | 30-day average | ≤ .71 ug/L | all year | 001 |
| Silver, potentially dissolved | 30-day average | ≤ .092 ug/L | all year | 001 |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Silver, potentially dissolved | daily maximum | ≤ 2.5 ug/L | all year | 001 |
| Copper, potentially dissolved | 30-day average | ≤ 160 ug/L | all year | 001 |
| Copper, potentially dissolved | 30-day average | ≤ 8.3 ug/L | all year | 001 |
| Copper, potentially dissolved | daily maximum | ≤ 160 ug/L | all year | 001 |
| Copper, potentially dissolved | daily maximum | ≤ 15 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | 30-day average | ≤ 3.2 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | 30-day average | ≤ .46 ug/L | all year | 001 |
| Cadmium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, potentially dissolvd | daily maximum | ≤ 1.9 ug/L | all year | 001 |
| Lead, potentially dissolvd | 30-day average | ≤ 120 ug/L | all year | 001 |
| Lead, potentially dissolvd | 30-day average | ≤ 2.9 ug/L | all year | 001 |
| Lead, potentially dissolvd | daily maximum | ≤ 120 ug/L | all year | 001 |
| Lead, potentially dissolvd | daily maximum | ≤ 74 ug/L | all year | 001 |
| Lead, potentially dissolvd | rolling average | report only (ug/L) | all year | 001 |
| Lead, potentially dissolvd | rolling average | ≤ 2.9 ug/L | all year | 001 |
| Manganese, potentially dissolvd | 30-day average | ≤ 3000 ug/L | all year | 001 |
| Manganese, potentially dissolvd | daily maximum | ≤ 3174 ug/L | all year | 001 |
| Nickel, potentially dissolvd | 30-day average | ≤ 75 ug/L | all year | 001 |
| Nickel, potentially dissolvd | 30-day average | ≤ 21 ug/L | all year | 001 |
| Nickel, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Nickel, potentially dissolvd | daily maximum | ≤ 525 ug/L | all year | 001 |
| Selenium, potentially dissolvd | 30-day average | ≤ 4.7 ug/L | all year | 001 |
| Selenium, potentially dissolvd | daily maximum | ≤ 19 ug/L | all year | 001 |
| Selenium, potentially dissolvd | rolling average | report only (ug/L) | all year | 001 |
| Selenium, potentially dissolvd | rolling average | ≤ 1.1 ug/L | all year | 001 |
| Uranium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Uranium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| Radium 226 + radium 228, total | 30-day average | report only (pCi/L) | all year | 001 |
| Uranium, total | daily maximum | report only (ug/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 4.7 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 | ≤ .63 ug/L | all year | 001 |
| Mercury, total [low level] | 30-day average | ≤ .01 ug/L | all year | 001 |
| Sulfide-hydrogen sulfide [undissociated] | 30-day average | report only (mg/L) | all year | 001 |
| Sulfate | 30-day average | report only (mg/L) | all year | 001 |
| Boron, total | 30-day average | report only (mg/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 | ≥ 99 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 | ≥ 99 tox chronic | all year | 001 |
| Temperature, water deg. centigrade | maximum weekly average | report only (deg C) | all year | UST1 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | UST1 |
Cited limits by parameter: Colorado's rules and the federal ones.
Same industry: the 30 Metal Mining permits in Colorado.
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Your permit document is the final word. As JSON: /api/v1/permits/CO0038334 · MCP: https://passage-data.com/mcp