Oxbow Mining LLC

NPDES permit CO0000132 · Minor NON-POTW · administratively continued, expires 2024-09-30 · EPA's file as of 2026-09-19

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This permit expired on 2024-09-30 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

0values over a limit
0required values missing, on 0 form(s)
0of 36 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among CO permits in EPA's filings — check your permit).

Limits in force (97)

OutfallParameterStatisticLimitMonths
009pHMINIMUM >= 6.5 SU all year
009pHMAXIMUM <= 9 SU all year
009Solids, total suspended30DA AVG <= 35 mg/L all year
009Solids, total suspendedMX 7D AV <= 70 mg/L all year
009Chloride [as Cl]30DA AVG report only all year
009Arsenic, total recoverable30DA AVG report only all year
009Iron, total recoverable30DA AVG <= 3000 ug/L all year
009Iron, total recoverable30DA AVG <= 1000 ug/L all year
009Iron, total recoverableDAILY MX <= 6000 ug/L all year
009Iron, total recoverableDAILY MX <= 6000 ug/L all year
009Manganese, dissolved [as Mn]30DA AVG report only all year
009Nickel, total recoverable30DA AVG report only all year
009Lead, total recoverableDAILY MX report only all year
009Chromium, total recoverable3B report only all year
009Chromium, total recoverableDAILY MX report only all year
009Zinc, potentially dissolved30DA AVG report only all year
009Zinc, potentially dissolvedDAILY MX report only all year
009Copper, potentially dissolved30DA AVG report only all year
009Copper, potentially dissolvedDAILY MX report only all year
009Chromium, trivalent, potentially dissolvd30DA AVG report only all year
009Lead, potentially dissolvd30DA AVG report only all year
009Lead, potentially dissolvdDAILY MX report only all year
009Manganese, potentially dissolvd30DA AVG report only all year
009Manganese, potentially dissolvdDAILY MX report only all year
009Nickel, potentially dissolvd30DA AVG report only all year
009Nickel, potentially dissolvdDAILY MX report only all year
009Selenium, potentially dissolvd30DA AVG report only all year
009Selenium, potentially dissolvdDAILY MX report only all year
009Chromium, trivalent total recoverableDAILY MX report only all year
009Flow, in conduit or thru treatment plant30DA AVG <= .039 MGD all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
009Mercury, total [low level]30DA AVG report only all year
009Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
009Sulfate30DA AVG report only all year
009Boron, total30DA AVG report only all year
012Temperature, water deg. centigradeMX WK AV report only all year
012Temperature, water deg. centigradeDAILY MX report only all year
012Conductivity30DA AVG report only all year
012pHMINIMUM >= 6.5 SU all year
012pHMAXIMUM <= 9 SU all year
012Bicarbonate ion- [as HCO3]30DA AVG report only all year
012Bicarbonate ion- [as HCO3]DAILY MX report only all year
012Solids, total suspended30DA AVG <= 30 mg/L all year
012Solids, total suspendedMX 7D AV <= 45 mg/L all year
012Calcium, total recoverable30DA AVG report only all year
012Calcium, total recoverableDAILY MX report only all year
012Magnesium, total recoverable30DA AVG report only all year
012Magnesium, total recoverableDAILY MX report only all year
012Sodium, total recoverable30DA AVG report only all year
012Sodium, total recoverableDAILY MX report only all year
012Sodium adsorption ratio30DA AVG report only all year
012Sodium adsorption ratioDAILY MX report only all year
012Sodium adsorption ratio30DA AVG report only all year
012Sodium adsorption ratioDAILY MX report only all year
012Chloride [as Cl]30DA AVG report only all year
012Arsenic, total recoverable30DA AVG report only all year
012Iron, total recoverable30DA AVG <= 3000 ug/L all year
012Iron, total recoverable30DA AVG <= 1000 ug/L all year
012Iron, dissolved [as Fe]30DA AVG report only all year
012Manganese, dissolved [as Mn]30DA AVG report only all year
012Nickel, total recoverable30DA AVG report only all year
012Cadmium, total recoverableDAILY MX report only all year
012Lead, total recoverableDAILY MX report only all year
012Chromium, total recoverable30DA AVG report only all year
012Chromium, total recoverableDAILY MX report only all year
012Zinc, potentially dissolved30DA AVG report only all year
012Zinc, potentially dissolvedDAILY MX report only all year
012Copper, potentially dissolved30DA AVG report only all year
012Copper, potentially dissolvedDAILY MX report only all year
012Cadmium, potentially dissolvd30DA AVG report only all year
012Cadmium, potentially dissolvdDAILY MX report only all year
012Chromium, trivalent, potentially dissolvd30DA AVG report only all year
012Lead, potentially dissolvd30DA AVG report only all year
012Lead, potentially dissolvdDAILY MX report only all year
012Manganese, potentially dissolvd30DA AVG report only all year
012Manganese, potentially dissolvdDAILY MX report only all year
012Nickel, potentially dissolvd30DA AVG report only all year
012Nickel, potentially dissolvdDAILY MX report only all year
012Selenium, potentially dissolvd30DA AVG report only all year
012Selenium, potentially dissolvdDAILY MX report only all year
012Oil and greaseINST MAX <= 10 mg/L all year
012Chromium, trivalent total recoverableDAILY MX report only all year
012Flow, in conduit or thru treatment plant30DA AVG <= .004 MGD all year
012Flow, in conduit or thru treatment plantDAILY MX report only all year
012Mercury, total [low level]30DA AVG report only all year
012Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
012Solids, total dissolved30DA AVG report only all year
012Solids, total dissolvedDAILY MX report only all year
012Sulfate30DA AVG report only all year
012Boron, total30DA AVG report only all year
012Oil and grease visualINST MAX report only all year
012Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
012Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
012Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
012Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
012Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
012Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only 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