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Gold Ores, major discharger, Salmon, Idaho. NPDES permit ID0027022 expired Oct 31, 2008; 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 | daily maximum | report only (deg C) | all year | 001 |
| pH | instantaneous minimum | ≥ 6.5 SU | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| pH | instantaneous maximum | ≤ 9 SU | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| pH | instantaneous minimum | ≥ 6.5 SU | May, Jun | 001 |
| pH | instantaneous maximum | ≤ 9 SU | May, Jun | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 50 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 50 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Solids, total suspended | daily maximum | ≤ 180 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Solids, total suspended | daily maximum | ≤ 75 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | May, Jun | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | May, Jun | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | May, Jun | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | May, Jun | 001 |
| Solids, total suspended | monthly average | ≤ 75 lb/d | May, Jun | 001 |
| Solids, total suspended | monthly average | ≤ 180 lb/d | May, Jun | 001 |
| Solids, total suspended | daily maximum | ≤ 260 lb/d | May, Jun | 001 |
| Solids, total suspended | daily maximum | ≤ 260 lb/d | May, Jun | 001 |
| Cyanide, weak acid, dissociable | monthly average | ≤ 33 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Cyanide, weak acid, dissociable | daily maximum | ≤ 66 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Cyanide, weak acid, dissociable | monthly average | ≤ .083 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Cyanide, weak acid, dissociable | daily maximum | ≤ .17 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Cyanide, weak acid, dissociable | monthly average | ≤ 32 ug/L | May, Jun | 001 |
| Cyanide, weak acid, dissociable | daily maximum | ≤ 64 ug/L | May, Jun | 001 |
| Cyanide, weak acid, dissociable | monthly average | ≤ .28 lb/d | May, Jun | 001 |
| Cyanide, weak acid, dissociable | daily maximum | ≤ .56 lb/d | May, Jun | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total recoverable | monthly average | ≤ 1.9 mg/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Arsenic, total recoverable | daily maximum | ≤ 3.2 mg/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Arsenic, total recoverable | monthly average | ≤ 4.8 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Arsenic, total recoverable | daily maximum | ≤ 8 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Arsenic, total recoverable | monthly average | ≤ .98 mg/L | May, Jun | 001 |
| Arsenic, total recoverable | daily maximum | ≤ 2 mg/L | May, Jun | 001 |
| Arsenic, total recoverable | monthly average | ≤ 8.6 lb/d | May, Jun | 001 |
| Arsenic, total recoverable | daily maximum | ≤ 18 lb/d | May, Jun | 001 |
| Iron, total recoverable | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Iron, total recoverable | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Iron, total recoverable | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Iron, total recoverable | daily maximum | report only (lb/d) | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Iron, total recoverable | monthly average | ≤ 3.1 mg/L | May, Jun | 001 |
| Iron, total recoverable | daily maximum | ≤ 7.8 mg/L | May, Jun | 001 |
| Iron, total recoverable | monthly average | ≤ 27 lb/d | May, Jun | 001 |
| Iron, total recoverable | daily maximum | ≤ 68 lb/d | May, Jun | 001 |
| Selenium, total recoverable | monthly average | ≤ 32 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Selenium, total recoverable | daily maximum | ≤ 63 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Selenium, total recoverable | monthly average | ≤ .08 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Selenium, total recoverable | daily maximum | ≤ .16 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Selenium, total recoverable | monthly average | ≤ 31 ug/L | May, Jun | 001 |
| Selenium, total recoverable | daily maximum | ≤ 62 ug/L | May, Jun | 001 |
| Selenium, total recoverable | monthly average | ≤ .27 lb/d | May, Jun | 001 |
| Selenium, total recoverable | daily maximum | ≤ .54 lb/d | May, Jun | 001 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Silver total recoverable | monthly average | ≤ 1 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Silver total recoverable | daily maximum | ≤ 1.3 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Silver total recoverable | monthly average | ≤ .0017 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Silver total recoverable | daily maximum | ≤ .0033 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Silver total recoverable | monthly average | ≤ 1 ug/L | May, Jun | 001 |
| Silver total recoverable | daily maximum | ≤ 1.5 ug/L | May, Jun | 001 |
| Silver total recoverable | monthly average | ≤ .0065 lb/d | May, Jun | 001 |
| Silver total recoverable | daily maximum | ≤ .013 lb/d | May, Jun | 001 |
| Zinc, total recoverable | monthly average | ≤ 68 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Zinc, total recoverable | daily maximum | ≤ 137 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Zinc, total recoverable | monthly average | ≤ .17 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Zinc, total recoverable | daily maximum | ≤ .34 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Zinc, total recoverable | monthly average | ≤ 69 ug/L | May, Jun | 001 |
| Zinc, total recoverable | daily maximum | ≤ 133 ug/L | May, Jun | 001 |
| Zinc, total recoverable | monthly average | ≤ .6 lb/d | May, Jun | 001 |
| Zinc, total recoverable | daily maximum | ≤ 1.2 lb/d | May, Jun | 001 |
| Cadmium, total recoverable | monthly average | ≤ 1.4 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Cadmium, total recoverable | daily maximum | ≤ 2.7 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Cadmium, total recoverable | monthly average | ≤ .0035 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Cadmium, total recoverable | daily maximum | ≤ .0068 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Cadmium, total recoverable | monthly average | ≤ 1.3 ug/L | May, Jun | 001 |
| Cadmium, total recoverable | daily maximum | ≤ 2.7 ug/L | May, Jun | 001 |
| Cadmium, total recoverable | monthly average | ≤ .011 lb/d | May, Jun | 001 |
| Cadmium, total recoverable | daily maximum | ≤ .024 lb/d | May, Jun | 001 |
| Lead, total recoverable | monthly average | ≤ 6.9 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Lead, total recoverable | monthly average | ≤ 6.9 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Lead, total recoverable | daily maximum | ≤ 14 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Lead, total recoverable | daily maximum | ≤ 14 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Lead, total recoverable | monthly average | ≤ .017 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Lead, total recoverable | monthly average | ≤ .017 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Lead, total recoverable | daily maximum | ≤ .035 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Lead, total recoverable | daily maximum | ≤ .035 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Lead, total recoverable | monthly average | ≤ 6.8 ug/L | May, Jun | 001 |
| Lead, total recoverable | monthly average | ≤ 6.8 ug/L | May, Jun | 001 |
| Lead, total recoverable | daily maximum | ≤ 14 ug/L | May, Jun | 001 |
| Lead, total recoverable | daily maximum | ≤ 14 ug/L | May, Jun | 001 |
| Lead, total recoverable | monthly average | ≤ .6 lb/d | May, Jun | 001 |
| Lead, total recoverable | monthly average | ≤ .06 lb/d | May, Jun | 001 |
| Lead, total recoverable | daily maximum | ≤ .12 lb/d | May, Jun | 001 |
| Lead, total recoverable | daily maximum | ≤ .12 lb/d | May, Jun | 001 |
| Copper, total recoverable | monthly average | ≤ 11 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Copper, total recoverable | daily maximum | ≤ 21 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Copper, total recoverable | monthly average | ≤ .028 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Copper, total recoverable | daily maximum | ≤ .053 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Copper, total recoverable | monthly average | ≤ 12 ug/L | May, Jun | 001 |
| Copper, total recoverable | daily maximum | ≤ 24 ug/L | May, Jun | 001 |
| Copper, total recoverable | monthly average | ≤ .11 lb/d | May, Jun | 001 |
| Copper, total recoverable | daily maximum | ≤ .35 lb/d | May, Jun | 001 |
| Toxicity, trout | daily maximum | report only (tox acute) | May, Oct | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | report only (tox chronic) | May, Oct | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox chronic) | May, Oct | 001 |
| Nitrogen, ammonia total [as NH4] | monthly average | ≤ 20 mg/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Nitrogen, ammonia total [as NH4] | daily maximum | ≤ 40 mg/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Nitrogen, ammonia total [as NH4] | monthly average | ≤ 50 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Nitrogen, ammonia total [as NH4] | daily maximum | ≤ 100 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Nitrogen, ammonia total [as NH4] | monthly average | ≤ 42 mg/L | May, Jun | 001 |
| Nitrogen, ammonia total [as NH4] | daily maximum | ≤ 84 mg/L | May, Jun | 001 |
| Nitrogen, ammonia total [as NH4] | monthly average | ≤ 370 lb/d | May, Jun | 001 |
| Nitrogen, ammonia total [as NH4] | daily maximum | ≤ 740 lb/d | May, Jun | 001 |
| Mercury, total [as Hg] | monthly average | ≤ .075 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .15 ug/L | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Mercury, total [as Hg] | monthly average | ≤ .00019 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .00038 lb/d | Jan, Feb, Mar, Apr, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| Mercury, total [as Hg] | monthly average | ≤ .074 ug/L | May, Jun | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .15 ug/L | May, Jun | 001 |
| Mercury, total [as Hg] | monthly average | ≤ .00065 lb/d | May, Jun | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .0013 lb/d | May, Jun | 001 |
| Toxicity, Chronic | daily maximum | report only (tox chronic) | May, Oct | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Mar–Oct | REC |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Mar–Oct | REC |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Mar–Oct | REC |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Mar–Oct | REC |
| pH | daily maximum | report only (SU) | Mar–Oct | REC |
| pH | daily maximum | report only (SU) | Mar–Oct | REC |
| pH | daily maximum | report only (SU) | Mar–Oct | REC |
| pH | daily maximum | report only (SU) | Mar–Oct | REC |
| Solids, total suspended | daily maximum | report only (mg/L) | Mar–Oct | REC |
| Solids, total suspended | daily maximum | report only (mg/L) | Mar–Oct | REC |
| Solids, total suspended | daily maximum | report only (mg/L) | Mar–Oct | REC |
| Solids, total suspended | daily maximum | report only (mg/L) | Mar–Oct | REC |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Hardness, total [as CaCO3] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Hardness, total [as CaCO3] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Hardness, total [as CaCO3] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Iron, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Iron, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Iron, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Iron, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Selenium, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Selenium, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Selenium, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Selenium, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Nickel, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Nickel, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Nickel, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Nickel, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Silver total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Silver total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Silver total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Silver total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Lead, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Lead, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Lead, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Lead, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Copper, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Copper, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Copper, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Copper, total recoverable | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Floating solids, waste or visible foam-visual | per discharge | report only (N=0;Y=1) | Mar–Oct | REC |
| Floating solids, waste or visible foam-visual | per discharge | report only (N=0;Y=1) | Mar–Oct | REC |
| Floating solids, waste or visible foam-visual | per discharge | report only (N=0;Y=1) | Mar–Oct | REC |
| Nitrogen, ammonia total [as NH4] | daily maximum | report only (mg/L) | Mar–Oct | REC |
| Nitrogen, ammonia total [as NH4] | daily maximum | report only (mg/L) | Mar–Oct | REC |
| Nitrogen, ammonia total [as NH4] | daily maximum | report only (mg/L) | Mar–Oct | REC |
| Nitrogen, ammonia total [as NH4] | daily maximum | report only (mg/L) | Mar–Oct | REC |
| Mercury, dissolved [as Hg] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Mercury, dissolved [as Hg] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Mercury, dissolved [as Hg] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Mercury, dissolved [as Hg] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | Mar–Oct | REC |
| Flow | daily average | report only (cfs) | all year | REC |
| Flow | daily average | report only (cfs) | all year | REC |
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/ID0027022 · MCP: https://passage-data.com/mcp