Original Sixteen to One Mine, Inc.

NPDES permit CA0081809 · Minor NON-POTW · administratively continued, expires 2026-07-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-07-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

26values over a limit
26required values missing, on 1 form(s)
2of 3 forms filed late

Last period with anything received: 2026-06-30. Most often over: Antimony, total recoverable (8), Iron, total recoverable (8), Arsenic, total recoverable (6).

Reporting

Reports are due about 32 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (52)

OutfallParameterStatisticLimitMonths
001Specific conductanceANNL AVG <= 2200 umho/cm all year
001Specific conductanceANNL AVG <= 2200 umho/cm all year
001Oxygen, dissolved [DO]INST MIN report only all year
001Oxygen, dissolved [DO]INST MIN report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Arsenic, total recoverableMO AVG <= 10 ug/L all year
001Arsenic, total recoverableMO AVG <= 10 ug/L all year
001Arsenic, total recoverableDAILY MX <= 22 ug/L all year
001Arsenic, total recoverableDAILY MX <= 22 ug/L all year
001Iron, total recoverableMO AVG <= 590 ug/L all year
001Iron, total recoverableMO AVG <= 590 ug/L all year
001Iron, total recoverableDAILY MX <= 770 ug/L all year
001Iron, total recoverableDAILY MX <= 770 ug/L all year
001Nickel, total recoverableMO AVG <= 45 ug/L all year
001Nickel, total recoverableMO AVG <= 45 ug/L all year
001Nickel, total recoverableDAILY MX <= 89 ug/L all year
001Nickel, total recoverableDAILY MX <= 89 ug/L all year
001Zinc, total recoverableMO AVG <= 750 ug/L all year
001Zinc, total recoverableMO AVG <= 750 ug/L all year
001Zinc, total recoverableDAILY MX <= 1500 ug/L all year
001Zinc, total recoverableDAILY MX <= 1500 ug/L all year
001Cadmium, total recoverableMO AVG <= 50 ug/L all year
001Cadmium, total recoverableMO AVG <= 50 ug/L all year
001Cadmium, total recoverableDAILY MX <= 100 ug/L all year
001Cadmium, total recoverableDAILY MX <= 100 ug/L all year
001Lead, total recoverableMO AVG <= 300 ug/L all year
001Lead, total recoverableMO AVG <= 300 ug/L all year
001Lead, total recoverableDAILY MX <= 600 ug/L all year
001Lead, total recoverableDAILY MX <= 600 ug/L all year
001Copper, total recoverableMO AVG <= 150 ug/L all year
001Copper, total recoverableMO AVG <= 150 ug/L all year
001Copper, total recoverableDAILY MX <= 300 ug/L all year
001Copper, total recoverableDAILY MX <= 300 ug/L all year
001Antimony, total recoverableMO AVG <= 5.6 ug/L all year
001Antimony, total recoverableMO AVG <= 5.6 ug/L all year
001Antimony, total recoverableDAILY MX <= 11 ug/L all year
001Antimony, total recoverableDAILY MX <= 11 ug/L all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total recoverableMO AVG <= 1 ug/L all year
001Mercury, total recoverableMO AVG <= 1 ug/L all year
001Mercury, total recoverableDAILY MX <= 2 ug/L all year
001Mercury, total recoverableDAILY MX <= 2 ug/L all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states