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Ferroalloy Ores, Except Vanadium, major discharger, Salmon, Idaho. NPDES permit ID0028321 expired Mar 31, 2014; its limits still apply. Last 12 months: no values over a limit, 10 required values missing, 5 of 33 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | ≤ 19 deg C | all year |
| Temperature, water deg. centigrade | daily maximum | ≤ 19 deg C | all year |
| Temperature, water deg. centigrade | single grab sample | report only (deg C) | all year |
| Temperature, water deg. centigrade | single grab sample | report only (deg C) | all year |
| Temperature, water deg. centigrade | single grab sample | report only (deg C) | all year |
| Temperature, water deg. centigrade | single grab sample | report only (deg C) | all year |
| Flow rate | single grab sample | report only (gal/min) | all year |
| Flow rate | single grab sample | report only (gal/min) | all year |
| Flow rate | single grab sample | report only (gal/min) | all year |
| Flow rate | single grab sample | report only (gal/min) | all year |
| Conductivity | single sample | report only (mS/m) | all year |
| Conductivity | single sample | report only (mS/m) | all year |
| Conductivity | single grab sample | report only (mS/m) | all year |
| Conductivity | single grab sample | report only (mS/m) | all year |
| Conductivity | single grab sample | report only (mS/m) | all year |
| Conductivity | single grab sample | report only (mS/m) | all year |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | all year |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | all year |
| Oxygen, dissolved [DO] | single grab sample | report only (mg/L) | all year |
| Oxygen, dissolved [DO] | single grab sample | report only (mg/L) | all year |
| Oxygen, dissolved [DO] | single grab sample | report only (mg/L) | all year |
| Oxygen, dissolved [DO] | single grab sample | report only (mg/L) | all year |
| pH | instantaneous minimum | ≥ 6.5 SU | all year |
| pH | instantaneous minimum | ≥ 6.5 SU | all year |
| pH | instantaneous maximum | ≤ 9 SU | all year |
| pH | instantaneous maximum | ≤ 9 SU | all year |
| pH | single grab sample | report only (SU) | all year |
| pH | single grab sample | report only (SU) | all year |
| pH | single grab sample | report only (SU) | all year |
| pH | single grab sample | report only (SU) | all year |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year |
| Solids, total suspended | single grab sample | report only (mg/L) | all year |
| Solids, total suspended | single grab sample | report only (mg/L) | all year |
| Solids, total suspended | single grab sample | report only (mg/L) | all year |
| Solids, total suspended | single grab sample | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.8 mg/L | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.8 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.6 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.6 mg/L | all year |
| Nitrogen, ammonia total [as N] | single grab sample | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | single grab sample | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | single grab sample | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | single grab sample | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ 10 mg/L | all year |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ 10 mg/L | all year |
| Nitrite + Nitrate total [as N] | single grab sample | report only (ug/L) | all year |
| Nitrite + Nitrate total [as N] | single grab sample | report only (ug/L) | all year |
| Nitrite + Nitrate total [as N] | single grab sample | report only (ug/L) | all year |
| Nitrite + Nitrate total [as N] | single grab sample | report only (ug/L) | all year |
| Hardness, total [as CaCO3] | single sample | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | single sample | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | single grab sample | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | single grab sample | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | single grab sample | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | single grab sample | report only (mg/L) | all year |
| Chloride [as Cl] | single grab sample | report only (mg/L) | all year |
| Chloride [as Cl] | single grab sample | report only (mg/L) | all year |
| Chloride [as Cl] | single grab sample | report only (mg/L) | all year |
| Chloride [as Cl] | single grab sample | report only (mg/L) | all year |
| Chloride [as Cl] | single grab sample | report only (mg/L) | all year |
| Chloride [as Cl] | single grab sample | report only (mg/L) | all year |
| Sulfate, total [as SO4] | monthly average | ≤ 930 mg/L | all year |
| Sulfate, total [as SO4] | monthly average | ≤ 930 mg/L | all year |
| Sulfate, total [as SO4] | daily maximum | ≤ 1867 mg/L | all year |
| Sulfate, total [as SO4] | daily maximum | ≤ 1867 mg/L | all year |
| Sulfate, total [as SO4] | single grab sample | report only (mg/L) | all year |
| Sulfate, total [as SO4] | single grab sample | report only (mg/L) | all year |
| Sulfate, total [as SO4] | single grab sample | report only (mg/L) | all year |
| Sulfate, total [as SO4] | single grab sample | report only (mg/L) | all year |
| Arsenic, total recoverable | monthly average | ≤ 10 ug/L | all year |
| Arsenic, total recoverable | monthly average | ≤ 10 ug/L | all year |
| Arsenic, total recoverable | daily maximum | ≤ 10 ug/L | all year |
| Arsenic, total recoverable | daily maximum | ≤ 10 ug/L | all year |
| Cobalt, total recoverable | monthly average | ≤ 70.4 ug/L | all year |
| Cobalt, total recoverable | monthly average | ≤ 70.4 ug/L | all year |
| Cobalt, total recoverable | daily maximum | ≤ 141 ug/L | all year |
| Cobalt, total recoverable | daily maximum | ≤ 141 ug/L | all year |
| Cobalt, total recoverable | single grab sample | report only (ug/L) | all year |
| Cobalt, total recoverable | single grab sample | report only (ug/L) | all year |
| Cobalt, total recoverable | single grab sample | report only (ug/L) | all year |
| Cobalt, total recoverable | single grab sample | report only (ug/L) | all year |
| Iron, total recoverable | single sample | report only (ug/L) | all year |
| Iron, total recoverable | single sample | report only (ug/L) | all year |
| Iron, total recoverable | single grab sample | report only (ug/L) | all year |
| Iron, total recoverable | single grab sample | report only (ug/L) | all year |
| Iron, total recoverable | single grab sample | report only (ug/L) | all year |
| Iron, total recoverable | single grab sample | report only (ug/L) | all year |
| Selenium, total recoverable | single sample | report only (ug/L) | all year |
| Selenium, total recoverable | single sample | report only (ug/L) | all year |
| Selenium, total recoverable | single grab sample | report only (ug/L) | all year |
| Selenium, total recoverable | single grab sample | report only (ug/L) | all year |
| Selenium, total recoverable | single grab sample | report only (ug/L) | all year |
| Selenium, total recoverable | single grab sample | report only (ug/L) | all year |
| Thallium, total recoverable | monthly average | ≤ .47 ug/L | all year |
| Thallium, total recoverable | monthly average | ≤ .47 ug/L | all year |
| Thallium, total recoverable | daily maximum | ≤ .95 ug/L | all year |
| Thallium, total recoverable | daily maximum | ≤ .95 ug/L | all year |
| Thallium, total recoverable | single grab sample | report only (ug/L) | all year |
| Thallium, total recoverable | single grab sample | report only (ug/L) | all year |
| Thallium, total recoverable | single grab sample | report only (ug/L) | all year |
| Thallium, total recoverable | single grab sample | report only (ug/L) | all year |
| Arsenic, dissolved [as As] | single grab sample | report only (ug/L) | all year |
| Arsenic, dissolved [as As] | single grab sample | report only (ug/L) | all year |
| Arsenic, dissolved [as As] | single grab sample | report only (ug/L) | all year |
| Arsenic, dissolved [as As] | single grab sample | report only (ug/L) | all year |
| Cadmium, dissolved [as Cd] | single grab sample | report only (ug/L) | all year |
| Cadmium, dissolved [as Cd] | single grab sample | report only (ug/L) | all year |
| Cadmium, dissolved [as Cd] | single grab sample | report only (ug/L) | all year |
| Cadmium, dissolved [as Cd] | single grab sample | report only (ug/L) | all year |
| Copper, dissolved [as Cu] | single grab sample | report only (ug/L) | all year |
| Copper, dissolved [as Cu] | single grab sample | report only (ug/L) | all year |
| Copper, dissolved [as Cu] | single grab sample | report only (ug/L) | all year |
| Copper, dissolved [as Cu] | single grab sample | report only (ug/L) | all year |
| Lead, dissolved [as Pb] | single grab sample | report only (ug/L) | all year |
| Lead, dissolved [as Pb] | single grab sample | report only (ug/L) | all year |
| Lead, dissolved [as Pb] | single grab sample | report only (ug/L) | all year |
| Lead, dissolved [as Pb] | single grab sample | report only (ug/L) | all year |
| Nickel, dissolved [as Ni] | single grab sample | report only (ug/L) | all year |
| Nickel, dissolved [as Ni] | single grab sample | report only (ug/L) | all year |
| Nickel, dissolved [as Ni] | single grab sample | report only (ug/L) | all year |
| Nickel, dissolved [as Ni] | single grab sample | report only (ug/L) | all year |
| Nickel, total recoverable | monthly average | ≤ 13.22 ug/L | all year |
| Nickel, total recoverable | monthly average | ≤ 13.22 ug/L | all year |
| Nickel, total recoverable | daily maximum | ≤ 26.52 ug/L | all year |
| Nickel, total recoverable | daily maximum | ≤ 26.52 ug/L | all year |
| Silver, dissolved [as Ag] | single grab sample | report only (ug/L) | all year |
| Silver, dissolved [as Ag] | single grab sample | report only (ug/L) | all year |
| Silver, dissolved [as Ag] | single grab sample | report only (ug/L) | all year |
| Silver, dissolved [as Ag] | single grab sample | report only (ug/L) | all year |
| Zinc, dissolved [as Zn] | single grab sample | report only (ug/L) | all year |
| Zinc, dissolved [as Zn] | single grab sample | report only (ug/L) | all year |
| Zinc, dissolved [as Zn] | single grab sample | report only (ug/L) | all year |
| Zinc, dissolved [as Zn] | single grab sample | report only (ug/L) | all year |
| Zinc, total recoverable | monthly average | ≤ 18.45 ug/L | all year |
| Zinc, total recoverable | monthly average | ≤ 18.45 ug/L | all year |
| Zinc, total recoverable | daily maximum | ≤ 37.02 ug/L | all year |
| Zinc, total recoverable | daily maximum | ≤ 37.02 ug/L | all year |
| Aluminum, total recoverable | single sample | report only (ug/L) | all year |
| Aluminum, total recoverable | single sample | report only (ug/L) | all year |
| Aluminum, total recoverable | single grab sample | report only (ug/L) | all year |
| Aluminum, total recoverable | single grab sample | report only (ug/L) | all year |
| Aluminum, total recoverable | single grab sample | report only (ug/L) | all year |
| Aluminum, total recoverable | single grab sample | report only (ug/L) | all year |
| Cadmium, total recoverable | monthly average | ≤ .21 ug/L | all year |
| Cadmium, total recoverable | monthly average | ≤ .21 ug/L | all year |
| Cadmium, total recoverable | daily maximum | ≤ .42 ug/L | all year |
| Cadmium, total recoverable | daily maximum | ≤ .42 ug/L | all year |
| Lead, total recoverable | monthly average | ≤ .45 ug/L | all year |
| Lead, total recoverable | monthly average | ≤ .45 ug/L | all year |
| Lead, total recoverable | daily maximum | ≤ .9 ug/L | all year |
| Lead, total recoverable | daily maximum | ≤ .9 ug/L | all year |
| Copper, total recoverable | monthly average | ≤ 2.4 ug/L | all year |
| Copper, total recoverable | monthly average | ≤ 2.4 ug/L | all year |
| Copper, total recoverable | daily maximum | ≤ 4.8 ug/L | all year |
| Copper, total recoverable | daily maximum | ≤ 4.8 ug/L | all year |
| Manganese, total recoverable | single sample | report only (ug/L) | all year |
| Manganese, total recoverable | single sample | report only (ug/L) | all year |
| Manganese, total recoverable | single grab sample | report only (ug/L) | all year |
| Manganese, total recoverable | single grab sample | report only (ug/L) | all year |
| Manganese, total recoverable | single grab sample | report only (ug/L) | all year |
| Manganese, total recoverable | single grab sample | report only (ug/L) | all year |
| Flow, in conduit or thru treatment plant | EPA's "DPD TOT" | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | EPA's "DPD TOT" | report only (MGD) | all year |
| Toxicity [chronic], Ceriodaphnia dubia | single sample | report only (toxic) | all year |
| Toxicity [chronic], Ceriodaphnia dubia | single sample | report only (toxic) | all year |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | single sample | report only (toxic) | all year |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | single sample | report only (toxic) | all year |
| Solids, total dissolved | single sample | report only (mg/L) | all year |
| Solids, total dissolved | single sample | report only (mg/L) | all year |
| Solids, total dissolved | single grab sample | report only (mg/L) | all year |
| Solids, total dissolved | single grab sample | report only (mg/L) | all year |
| Solids, total dissolved | single grab sample | report only (mg/L) | all year |
| Solids, total dissolved | single grab sample | report only (mg/L) | all year |
| Mercury, total [as Hg] | monthly average | ≤ .01 ug/L | all year |
| Mercury, total [as Hg] | monthly average | ≤ .01 ug/L | all year |
| Mercury, total [as Hg] | daily maximum | ≤ .02 ug/L | all year |
| Mercury, total [as Hg] | daily maximum | ≤ .02 ug/L | all year |
| Mercury, total [as Hg] | single grab sample | report only (ug/L) | all year |
| Mercury, total [as Hg] | single grab sample | report only (ug/L) | all year |
| Mercury, total [as Hg] | single grab sample | report only (ug/L) | all year |
| Mercury, total [as Hg] | single grab sample | report only (ug/L) | all year |
| Flow | annual maximum | ≤ 17.6 Mgal/yr | all year |
| Flow | annual maximum | ≤ 17.6 Mgal/yr | all year |
| Flow | monthly total | report only (Mgal/mo) | all year |
| Flow | monthly total | report only (Mgal/mo) | all year |
| Flow | year-to-date total | report only (Mgal/yr) | all year |
| Flow | year-to-date total | report only (Mgal/yr) | all year |
Cited limits by parameter: Idaho's rules and the federal ones.
Same industry: the 10 Metal Mining permits in Idaho.
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Your permit document is the final word. As JSON: /api/v1/permits/ID0028321 · MCP: https://passage-data.com/mcp