Passage Data · Check a report · Use it from your AI

Cyprus Tohono Corp

Copper Ores, Casa Grande, Arizona. NPDES permit AZ0024601 expired May 31, 2024; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 30 days after each period: form Y yearly
Last report on file
December 2025
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 1 report late

Limits in force (24)

ParameterStatisticLimitMonths
pHminimum≥ 6.5 SUall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
pHmaximum≤ 9 SUall year
Acidity, total [as CaCO3]daily maximumreport only (mg/L)all year
Acidity, total [as CaCO3]daily maximumreport only (mg/L)all year
Selenium, total recoverabledaily maximumreport only (mg/L)all year
Selenium, total recoverabledaily maximumreport only (mg/L)all year
Silver total recoverabledaily maximum≤ .00032 mg/Lall year
Silver total recoverabledaily maximum≤ .00032 mg/Lall year
Zinc, total recoverabledaily maximum≤ .344 mg/Lall year
Zinc, total recoverabledaily maximum≤ .344 mg/Lall year
Aluminum, total recoverabledaily maximumreport only (mg/L)all year
Aluminum, total recoverabledaily maximumreport only (mg/L)all year
Cadmium, total recoverabledaily maximum≤ .014 mg/Lall year
Cadmium, total recoverabledaily maximum≤ .014 mg/Lall year
Lead, total recoverabledaily maximum≤ .015 mg/Lall year
Lead, total recoverabledaily maximum≤ .015 mg/Lall year
Copper, total recoverabledaily maximum≤ .0063 mg/Lall year
Copper, total recoverabledaily maximum≤ .0063 mg/Lall year
Manganese, total recoverabledaily maximumreport only (mg/L)all year
Manganese, total recoverabledaily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

How strict are these limits?

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

Same industry: the 8 Metal Mining permits in Arizona.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AZ0024601 · MCP: https://passage-data.com/mcp