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Aquila Resources USA, Inc.

Copper Ores, Stephenson, Michigan. NPDES permit MI0059945 expired Oct 1, 2020; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A monthly (82 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (82)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Oxygen, dissolved [DO]daily minimum≥ 3 mg/Lall year
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 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
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 13 lb/dall year
Phosphorus, total [as P]daily maximumreport only (lb/d)all year
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year
Chloride [as Cl]monthly averagereport only (mg/L)all year
Chloride [as Cl]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Fluoride, total [as F]daily maximum≤ 17 mg/Lall year
Fluoride, total [as F]daily maximum≤ 210 lb/dall year
Arsenic, total [as As]daily maximum≤ .68 mg/Lall year
Arsenic, total [as As]daily maximum≤ 8.6 lb/dall year
Barium, total [as Ba]monthly averagereport only (mg/L)all year
Barium, total [as Ba]daily maximumreport only (mg/L)all year
Beryllium, total [as Be]monthly maximumreport only (ug/L)all year
Beryllium, total [as Be]daily maximumreport only (ug/L)all year
Boron, total [as B]monthly averagereport only (mg/L)all year
Boron, total [as B]daily maximumreport only (mg/L)all year
Cadmium, total [as Cd]daily maximum≤ 21 ug/Lall year
Cadmium, total [as Cd]daily maximum≤ .27 lb/dall year
Chromium, hexavalent [as Cr]monthly averagereport only (ug/L)all year
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year
Chromium, total [as Cr]monthly averagereport only (ug/L)all year
Chromium, total [as Cr]daily maximumreport only (ug/L)all year
Cobalt, total [as Co]monthly averagereport only (ug/L)all year
Cobalt, total [as Co]daily maximumreport only (ug/L)all year
Copper, total [as Cu]daily maximum≤ 46 ug/Lall year
Copper, total [as Cu]daily maximum≤ .58 lb/dall year
Lead, total [as Pb]monthly average≤ .3 mg/Lall year
Lead, total [as Pb]daily maximum≤ .6 mg/Lall year
Lead, total [as Pb]monthly average≤ 3.8 lb/dall year
Lead, total [as Pb]daily maximum≤ 7.6 lb/dall year
Manganese, total [as Mn]daily maximum≤ 9.5 mg/Lall year
Manganese, total [as Mn]daily maximum≤ 120 lb/dall year
Thallium, total [as Tl]monthly averagereport only (ug/L)all year
Thallium, total [as Tl]daily maximumreport only (ug/L)all year
Molybdenum, total [as Mo]monthly averagereport only (mg/L)all year
Molybdenum, total [as Mo]daily maximumreport only (mg/L)all year
Nickel, total [as Ni]daily maximum≤ 1.2 mg/Lall year
Nickel, total [as Ni]daily maximum≤ 15 lb/dall year
Silver, total [as Ag]monthly averagereport only (ug/L)all year
Silver, total [as Ag]daily maximumreport only (ug/L)all year
Strontium, total [as Sr]monthly averagereport only (mg/L)all year
Strontium, total [as Sr]daily maximumreport only (mg/L)all year
Vanadium, total [as V]monthly averagereport only (ug/L)all year
Vanadium, total [as V]daily maximumreport only (ug/L)all year
Zinc, total [as Zn]daily maximum≤ .55 mg/Lall year
Zinc, total [as Zn]daily maximum≤ 7 lb/dall year
Antimony, total [as Sb]monthly averagereport only (mg/L)all year
Antimony, total [as Sb]daily maximumreport only (mg/L)all year
Lithium, total [as Li]monthly averagereport only (mg/L)all year
Lithium, total [as Li]daily maximumreport only (mg/L)all year
Selenium, total [as Se]daily maximum≤ .12 mg/Lall year
Selenium, total [as Se]daily maximum≤ 1.5 lb/dall year
Cyanide [A]monthly averagereport only (ug/L)all year
Cyanide [A]daily maximumreport only (ug/L)all year
Uranium, totalmonthly averagereport only (ug/L)all year
Uranium, totaldaily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ 38 ug/Lall year
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteall year
Solids, total dissolvedmonthly averagereport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Mercury, total [as Hg]monthly average≤ 1.3 ng/Lall year
Mercury, total [as Hg]daily maximumreport only (ng/L)all year
Mercury, total [as Hg]monthly average≤ .000016 lb/dall year
Mercury, total [as Hg]daily maximumreport only (lb/d)all year
Outfall observation,visual, y/n responsemonthly averagereport only (N=0;Y=1)all year
Toxicity, Acutedaily maximumreport only (tox acute)all year
TU Static 24 Hr Acute Pimephales promelasdaily maximum≤ 1 tox acuteall year

How strict are these limits?

Cited limits by parameter: Michigan's rules and the federal ones.

Same industry: the 6 Metal Mining permits in Michigan.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MI0059945 · MCP: https://passage-data.com/mcp