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Gold Ores, major discharger, Stanley, Idaho. NPDES permit ID0026468 expired Nov 30, 2023; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | maximum 7-day average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | all year | 002 |
| Streamflow | daily minimum | report only (cfs) | all year | 002 |
| Streamflow | monthly average | report only (cfs) | all year | 002 |
| Conductivity | monthly average | report only (umho/cm) | all year | 002 |
| Conductivity | daily maximum | report only (umho/cm) | all year | 002 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Apr, Jun, Aug, Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr, Jun, Aug, Oct | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Apr, Jun, Aug, Oct | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Apr, Jun, Aug, Oct | 002 |
| Carbon, dissolved organic [as C] | monthly average | report only (mg/L) | all year | 002 |
| Carbon, dissolved organic [as C] | daily maximum | report only (mg/L) | all year | 002 |
| Cyanide, weak acid, dissociable | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Arsenic, total recoverable | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Selenium, total recoverable | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Silver total recoverable | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Silver total recoverable | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Zinc, total recoverable | monthly average | ≤ 141 ug/L | all year | 002 |
| Zinc, total recoverable | monthly average | ≤ 107 ug/L | all year | 002 |
| Zinc, total recoverable | daily maximum | ≤ 304 ug/L | all year | 002 |
| Zinc, total recoverable | daily maximum | ≤ 230 ug/L | all year | 002 |
| Aluminum, total recoverable | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 002 |
| Cadmium, total recoverable | monthly average | ≤ 1.44 ug/L | all year | 002 |
| Cadmium, total recoverable | monthly average | ≤ 1.32 ug/L | all year | 002 |
| Cadmium, total recoverable | daily maximum | ≤ 2.72 ug/L | all year | 002 |
| Cadmium, total recoverable | daily maximum | ≤ 2.5 ug/L | all year | 002 |
| Lead, total recoverable | monthly average | ≤ 1.8 ug/L | all year | 002 |
| Lead, total recoverable | monthly average | ≤ .84 ug/L | all year | 002 |
| Lead, total recoverable | daily maximum | ≤ 4.84 ug/L | all year | 002 |
| Lead, total recoverable | daily maximum | ≤ 2.28 ug/L | all year | 002 |
| Copper, total recoverable | monthly average | ≤ 18.6 ug/L | all year | 002 |
| Copper, total recoverable | monthly average | ≤ 14.9 ug/L | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ 41.9 ug/L | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ 33.5 ug/L | all year | 002 |
| Floating solids, waste or visible foam-visual | monthly maximum | ≤ 0 N=0;Y=1 | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 5.57 cfs | all year | 002 |
| Mercury, total [as Hg] | monthly average | ≤ .022 ug/L | all year | 002 |
| Mercury, total [as Hg] | daily maximum | ≤ .057 ug/L | all year | 002 |
| Effluent dilution ratio | daily minimum | ≥ 8 Ratio | all year | 002 |
| Toxicity, Acute | monthly average | report only (tox acute) | Apr | 002 |
| Toxicity, Acute | daily maximum | report only (tox acute) | Apr | 002 |
| Toxicity, Chronic | monthly average | ≤ 4.6 toxic | Apr, Jun, Aug, Oct | 002 |
| Toxicity, Chronic | daily maximum | ≤ 9.2 toxic | Apr, Jun, Aug, Oct | 002 |
| Temperature, water deg. centigrade | maximum 7-day average | report only (deg C) | all year | 003 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 003 |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | all year | 003 |
| Streamflow | monthly average | report only (cfs) | all year | 003 |
| Conductivity | monthly average | report only (umho/cm) | all year | 003 |
| Conductivity | daily maximum | report only (umho/cm) | all year | 003 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Apr, Jun, Aug, Oct | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr, Jun, Aug, Oct | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Apr, Jun, Aug, Oct | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Apr, Jun, Aug, Oct | 003 |
| Carbon, dissolved organic [as C] | monthly average | report only (mg/L) | all year | 003 |
| Carbon, dissolved organic [as C] | daily maximum | report only (mg/L) | all year | 003 |
| Cyanide, weak acid, dissociable | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 003 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 003 |
| Selenium, total recoverable | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Silver total recoverable | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Silver total recoverable | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Zinc, total recoverable | monthly average | ≤ 158 ug/L | all year | 003 |
| Zinc, total recoverable | monthly average | ≤ 147 ug/L | all year | 003 |
| Zinc, total recoverable | monthly average | ≤ 167 ug/L | all year | 003 |
| Zinc, total recoverable | daily maximum | ≤ 344 ug/L | all year | 003 |
| Zinc, total recoverable | daily maximum | ≤ 319 ug/L | all year | 003 |
| Zinc, total recoverable | daily maximum | ≤ 364 ug/L | all year | 003 |
| Aluminum, total recoverable | monthly average | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | 003 |
| Cadmium, total recoverable | monthly average | ≤ 2.22 ug/L | all year | 003 |
| Cadmium, total recoverable | monthly average | ≤ 2.5 ug/L | all year | 003 |
| Cadmium, total recoverable | monthly average | ≤ 2.96 ug/L | all year | 003 |
| Cadmium, total recoverable | daily maximum | ≤ 4.08 ug/L | all year | 003 |
| Cadmium, total recoverable | daily maximum | ≤ 4.59 ug/L | all year | 003 |
| Cadmium, total recoverable | daily maximum | ≤ 5.42 ug/L | all year | 003 |
| Lead, total recoverable | monthly average | ≤ 1.4 ug/L | all year | 003 |
| Lead, total recoverable | monthly average | ≤ .75 ug/L | all year | 003 |
| Lead, total recoverable | monthly average | ≤ .96 ug/L | all year | 003 |
| Lead, total recoverable | daily maximum | ≤ 4.84 ug/L | all year | 003 |
| Lead, total recoverable | daily maximum | ≤ 2.6 ug/L | all year | 003 |
| Lead, total recoverable | daily maximum | ≤ 3.32 ug/L | all year | 003 |
| Copper, total recoverable | monthly average | ≤ 21.6 ug/L | all year | 003 |
| Copper, total recoverable | monthly average | ≤ 21.8 ug/L | all year | 003 |
| Copper, total recoverable | monthly average | ≤ 20.8 ug/L | all year | 003 |
| Copper, total recoverable | daily maximum | ≤ 39.8 ug/L | all year | 003 |
| Copper, total recoverable | daily maximum | ≤ 40.3 ug/L | all year | 003 |
| Copper, total recoverable | daily maximum | ≤ 38.5 ug/L | all year | 003 |
| Floating solids, waste or visible foam-visual | monthly maximum | ≤ 0 N=0;Y=1 | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .668 cfs | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 1.11 cfs | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 2.01 cfs | all year | 003 |
| Mercury, total [as Hg] | monthly average | ≤ .026 ug/L | all year | 003 |
| Mercury, total [as Hg] | monthly average | ≤ .025 ug/L | all year | 003 |
| Mercury, total [as Hg] | monthly average | ≤ .035 ug/L | all year | 003 |
| Mercury, total [as Hg] | daily maximum | ≤ .053 ug/L | all year | 003 |
| Mercury, total [as Hg] | daily maximum | ≤ .05 ug/L | all year | 003 |
| Mercury, total [as Hg] | daily maximum | ≤ .069 ug/L | all year | 003 |
| Toxicity, Acute | monthly average | report only (toxic) | Apr | 003 |
| Toxicity, Acute | daily maximum | report only (toxic) | Apr | 003 |
| Toxicity, Chronic | monthly average | ≤ 25 toxic | Apr, Jun, Aug, Oct | 003 |
| Toxicity, Chronic | monthly average | ≤ 9.1 toxic | Apr, Jun, Aug, Oct | 003 |
| Toxicity, Chronic | monthly average | ≤ 10 toxic | Apr, Jun, Aug, Oct | 003 |
| Toxicity, Chronic | daily maximum | ≤ 51 toxic | Apr, Jun, Aug, Oct | 003 |
| Toxicity, Chronic | daily maximum | ≤ 18 toxic | Apr, Jun, Aug, Oct | 003 |
| Toxicity, Chronic | daily maximum | ≤ 20 toxic | Apr, Jun, Aug, Oct | 003 |
| Temperature, water deg. centigrade | maximum 7-day average | report only (deg C) | Jul–Sep | REC |
| Temperature, water deg. centigrade | maximum 7-day average | report only (deg C) | Jul–Sep | REC |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Jul–Sep | REC |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Jul–Sep | REC |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | Jul–Sep | REC |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | Jul–Sep | REC |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | Apr, Jun, Oct | REC |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | Apr, Jun, Aug, Oct | REC |
| Turbidity | instantaneous maximum | report only (NTU) | Apr, Jun, Aug, Oct | REC |
| Turbidity | instantaneous maximum | report only (NTU) | Apr, Jun, Aug, Oct | REC |
| Conductivity | instantaneous maximum | report only (umho/cm) | Apr, Jun, Aug, Oct | REC |
| Conductivity | instantaneous maximum | report only (umho/cm) | Apr, Jun, Aug, Oct | REC |
| pH | instantaneous maximum | report only (SU) | Apr, Jun, Aug, Oct | REC |
| pH | instantaneous maximum | report only (SU) | Apr, Jun, Aug, Oct | REC |
| Nitrogen, ammonia total [as N] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC |
| Nitrogen, ammonia total [as N] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC |
| Nitrite + Nitrate total [as N] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC |
| Nitrite + Nitrate total [as N] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC |
| Carbon, dissolved organic [as C] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC |
| Carbon, dissolved organic [as C] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC |
| Hardness, total [as CaCO3] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC |
| Hardness, total [as CaCO3] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC |
| Selenium, total recoverable | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Selenium, total recoverable | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Copper, dissolved [as Cu] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Copper, dissolved [as Cu] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Lead, dissolved [as Pb] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Lead, dissolved [as Pb] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Zinc, dissolved [as Zn] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Zinc, dissolved [as Zn] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Mercury, total [as Hg] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Mercury, total [as Hg] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC |
| Temperature, water deg. centigrade | maximum 7-day average | report only (deg C) | Jul–Sep | REC2 |
| Temperature, water deg. centigrade | maximum 7-day average | report only (deg C) | Jul–Sep | REC2 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Jul–Sep | REC2 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Jul–Sep | REC2 |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | Jul–Sep | REC2 |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | Jul–Sep | REC2 |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | Apr, Jun, Oct | REC2 |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | Apr, Jun, Oct | REC2 |
| Turbidity | instantaneous maximum | report only (NTU) | Apr, Jun, Aug, Oct | REC2 |
| Turbidity | instantaneous maximum | report only (NTU) | Apr, Jun, Aug, Oct | REC2 |
| Conductivity | instantaneous maximum | report only (umho/cm) | Apr, Jun, Aug, Oct | REC2 |
| Conductivity | instantaneous maximum | report only (umho/cm) | Apr, Jun, Aug, Oct | REC2 |
| pH | instantaneous maximum | report only (SU) | Apr, Jun, Aug, Oct | REC2 |
| pH | instantaneous maximum | report only (SU) | Apr, Jun, Aug, Oct | REC2 |
| Nitrogen, ammonia total [as N] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC2 |
| Nitrogen, ammonia total [as N] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC2 |
| Nitrite + Nitrate total [as N] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC2 |
| Nitrite + Nitrate total [as N] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC2 |
| Carbon, dissolved organic [as C] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC2 |
| Carbon, dissolved organic [as C] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC2 |
| Hardness, total [as CaCO3] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC2 |
| Hardness, total [as CaCO3] | instantaneous maximum | report only (mg/L) | Apr, Jun, Aug, Oct | REC2 |
| Selenium, total recoverable | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
| Selenium, total recoverable | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
| Copper, dissolved [as Cu] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
| Copper, dissolved [as Cu] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
| Lead, dissolved [as Pb] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
| Lead, dissolved [as Pb] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
| Zinc, dissolved [as Zn] | daily maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
| Zinc, dissolved [as Zn] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
| Mercury, total [as Hg] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
| Mercury, total [as Hg] | instantaneous maximum | report only (ug/L) | Apr, Jun, Aug, Oct | REC2 |
Cited limits by parameter: Idaho's rules and the federal ones.
Same industry: the 10 Metal Mining permits in Idaho.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/ID0026468 · MCP: https://passage-data.com/mcp