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

Homestake Mining Company of California (HMC)

Gold Ores, Cerrillos, New Mexico. NPDES permit NM0028711, in force until Sep 30, 2031. Last 12 months: no values over a limit, 6 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 6 required values missing, 4 of 13 reports late

Limits in force (13)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6.6 SUall year001
pHmaximum≤ 9 SUall year001
Selenium, total [as Se]daily maximum≤ 5 ug/Lall year001
Uranium, totaldaily maximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Alpha, gross adjusteddaily maximumreport only (pCi/L)all year001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48-hour minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexmonthly average minimumreport only (pass=0;fail=1)all yearTX1
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48-hour minimumreport only (%)all yearTX1
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexmonthly average minimumreport only (%)all yearTX1
Coef Of Var Static Renewal 48Hr Acute D. pulex48-hour minimumreport only (%)all yearTX1
Coef Of Var Static Renewal 48Hr Acute D. pulexmonthly average minimumreport only (%)all yearTX1

How strict are these limits?

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

Same industry: the 3 Metal Mining permits in New Mexico.

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/NM0028711 · MCP: https://passage-data.com/mcp