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Les Yesnik - Teck Alaska Inc / Red Dog Operations

Lead And Zinc Ores, major discharger, Kotzebue, Alaska. NPDES permit AK0038652, in force until Apr 30, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form AM monthly (28 values), form AA yearly, form AB every 2 months
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 12 reports late

Limits in force (37)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 10.5 SUall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendeddaily maximum≤ 30 mg/Lall year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Cyanide, weak acid, dissociablemonthly averagereport only (ug/L)all year
Cyanide, weak acid, dissociabledaily maximumreport only (ug/L)all year
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year
Selenium, total recoverablemonthly average≤ 11 ug/Lall year
Selenium, total recoverabledaily maximum≤ 17 ug/Lall year
Barium, total [as Ba]monthly averagereport only (ug/L)all year
Barium, total [as Ba]daily maximumreport only (ug/L)all year
Zinc, total recoverablemonthly average≤ 221 ug/Lall year
Zinc, total recoverabledaily maximum≤ 388 ug/Lall year
Cadmium, total recoverablemonthly average≤ 1.4 ug/Lall year
Cadmium, total recoverabledaily maximum≤ 3.7 ug/Lall year
Lead, total recoverablemonthly average≤ 8.1 ug/Lall year
Lead, total recoverabledaily maximum≤ 18.3 ug/Lall year
Copper, total recoverablemonthly average≤ 21 ug/Lall year
Copper, total recoverabledaily maximum≤ 52 ug/Lall year
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all year
Flow, in conduit or thru treatment plantyear-to-date total≤ 2418 Mgal/yrall year
Chlorine, total residualmonthly averagereport only (ug/L)all year
Chlorine, total residualdaily maximumreport only (ug/L)all year
Priority pollutants scan [yes/no]maximumreport only (pass=0;fail=1)all year
Mercury, total [as Hg]monthly average≤ .01 ug/Lall year
Mercury, total [as Hg]daily maximum≤ .018 ug/Lall year
Organics, tot purgeables [Method 624]monthly averagereport only (ug/L)all year
Organics, tot purgeables [Method 624]daily maximumreport only (ug/L)all year
Base neutrals & acid [Method 625], totalmonthly averagereport only (ug/L)all year
Base neutrals & acid [Method 625], totaldaily maximumreport only (ug/L)all year

How strict are these limits?

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/AK0038652 · MCP: https://passage-data.com/mcp