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Gold Ores, major discharger, Delta Junction, Alaska. NPDES permit AK0053341, in force until Oct 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Turbidity | monthly average | report only (NTU) | all year | 001 |
| Turbidity | daily maximum | report only (NTU) | all year | 001 |
| Turbidity | monthly average | report only (NTU) | all year | 001 |
| Turbidity | daily maximum | report only (NTU) | all year | 001 |
| Turbidity | monthly average | report only (NTU) | all year | 001 |
| Turbidity | daily maximum | ≤ 5 NTU | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 8.5 SU | all year | 001 |
| Cyanide, weak acid, dissociable | monthly average | ≤ 3.3 ug/L | all year | 001 |
| Cyanide, weak acid, dissociable | daily maximum | ≤ 9.5 ug/L | all year | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total recoverable | monthly average | ≤ 46 ug/L | all year | 001 |
| Zinc, total recoverable | daily maximum | ≤ 61 ug/L | all year | 001 |
| Cadmium, total recoverable | monthly average | ≤ .1 ug/L | all year | 001 |
| Cadmium, total recoverable | daily maximum | ≤ .3 ug/L | all year | 001 |
| Lead, total recoverable | monthly average | ≤ .7 ug/L | all year | 001 |
| Lead, total recoverable | daily maximum | ≤ 2.1 ug/L | all year | 001 |
| Copper, total recoverable | monthly average | ≤ 3.5 ug/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ 6.6 ug/L | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/min) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 16500 gal/min | all year | 001 |
| Toxicity, final conc toxicity units | monthly average | report only (tox chronic) | all year | 001 |
| Toxicity, final conc toxicity units | daily maximum | report only (tox chronic) | all year | 001 |
| Mercury, total [as Hg] | monthly average | report only (ug/L) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | all year | 001 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| Oxygen, dissolved [DO] | minimum | ≥ 2 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 60 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 002 |
| Nitrogen, nitrate total [as N] | monthly average | ≤ 80 mg/L | all year | 002 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 160 mg/L | all year | 002 |
| Arsenic, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Lead, total recoverable | monthly maximum | report only (ug/L) | all year | 002 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Manganese, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Manganese, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 72000 gal/d | all year | 002 |
| Mercury, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 002 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 011 |
| pH | maximum | ≤ 9 SU | all year | 011 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 011 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 011 |
| Cyanide, weak acid, dissociable | monthly average | report only (ug/L) | all year | 011 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | 011 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 011 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 011 |
| Iron, total recoverable | monthly average | ≤ 817 ug/L | all year | 011 |
| Iron, total recoverable | daily maximum | ≤ 1639 ug/L | all year | 011 |
| Zinc, total recoverable | monthly average | ≤ 750 ug/L | all year | 011 |
| Zinc, total recoverable | daily maximum | ≤ 1500 ug/L | all year | 011 |
| Cadmium, total recoverable | monthly average | ≤ 50 ug/L | all year | 011 |
| Cadmium, total recoverable | daily maximum | ≤ 100 ug/L | all year | 011 |
| Lead, total recoverable | monthly average | ≤ 300 ug/L | all year | 011 |
| Lead, total recoverable | daily maximum | ≤ 600 ug/L | all year | 011 |
| Copper, total recoverable | monthly average | ≤ 150 ug/L | all year | 011 |
| Copper, total recoverable | daily maximum | ≤ 300 ug/L | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/min) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 1500 gal/min | all year | 011 |
| Mercury, total [as Hg] | monthly average | ≤ 1 ug/L | all year | 011 |
| Mercury, total [as Hg] | daily maximum | ≤ 2 ug/L | all year | 011 |
Cited limits by parameter: Alaska's rules and the federal ones.
Same industry: the 7 Metal Mining permits in Alaska.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/AK0053341 · MCP: https://passage-data.com/mcp