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NPDES permit CO0038334 · Major NON-POTW · administratively continued, expires 2024-08-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2024-08-31 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

12values over a limit
0required values missing, on 0 form(s)
1of 30 forms filed late

Last period with anything received: 2026-07-31. Most often over: Zinc, potentially dissolved (7), Static Renewal 7 Day Chronic Ceriodaphnia dubia (2), Silver, potentially dissolved (2).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (168)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMX WK AV report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspendedMX 7D AV <= 45 mg/L all year
001Cyanide, weak acid, dissociableDAILY MX report only all year
001Chloride [as Cl]30DA AVG report only all year
001Arsenic, total recoverable30DA AVG report only all year
001Arsenic, total recoverable30DA AVG <= 14 ug/L all year
001Iron, total recoverable30DA AVG <= 4000 ug/L all year
001Iron, total recoverable30DA AVG <= 1012 ug/L all year
001Iron, total recoverableROLL AVG report only all year
001Iron, total recoverableROLL AVG <= 337 ug/L all year
001Iron, dissolved [as Fe]30DA AVG report only Jan
001Iron, dissolved [as Fe]30DA AVG report only Feb
001Iron, dissolved [as Fe]30DA AVG report only Mar
001Iron, dissolved [as Fe]30DA AVG report only Apr
001Iron, dissolved [as Fe]30DA AVG report only May
001Iron, dissolved [as Fe]30DA AVG report only Jun
001Iron, dissolved [as Fe]30DA AVG report only Jul
001Iron, dissolved [as Fe]30DA AVG report only Aug
001Iron, dissolved [as Fe]30DA AVG report only Sep
001Iron, dissolved [as Fe]30DA AVG report only Oct
001Iron, dissolved [as Fe]30DA AVG report only Nov
001Iron, dissolved [as Fe]30DA AVG report only Dec
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Jan
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Feb
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Mar
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Apr
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L May
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Jun
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Jul
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Aug
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Sep
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Oct
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Nov
001Iron, dissolved [as Fe]30DA AVG <= 306 ug/L Dec
001Iron, dissolved [as Fe]30DA AVG <= 3.4 lb/d Apr
001Iron, dissolved [as Fe]30DA AVG <= 3.9 lb/d May
001Iron, dissolved [as Fe]30DA AVG <= 7.7 lb/d Jun
001Iron, dissolved [as Fe]30DA AVG <= 6.5 lb/d Jul
001Iron, dissolved [as Fe]30DA AVG <= 5.9 lb/d Aug
001Iron, dissolved [as Fe]30DA AVG <= 5.3 lb/d Sep
001Iron, dissolved [as Fe]30DA AVG <= 4.8 lb/d Oct
001Iron, dissolved [as Fe]30DA AVG <= 3.4 lb/d Apr
001Iron, dissolved [as Fe]30DA AVG <= 3.9 lb/d May
001Iron, dissolved [as Fe]30DA AVG <= 7.7 lb/d Jun
001Iron, dissolved [as Fe]30DA AVG <= 6.5 lb/d Jul
001Iron, dissolved [as Fe]30DA AVG <= 5.9 lb/d Aug
001Iron, dissolved [as Fe]30DA AVG <= 5.3 lb/d Sep
001Iron, dissolved [as Fe]30DA AVG <= 4.8 lb/d Oct
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Jan
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Feb
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Mar
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Apr
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L May
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Jun
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Jul
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Aug
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Sep
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Oct
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Nov
001Manganese, dissolved [as Mn]30DA AVG <= 3000 ug/L Dec
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Jan
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Feb
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Mar
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Apr
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L May
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Jun
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Jul
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Aug
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Sep
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Oct
001Manganese, dissolved [as Mn]30DA AVG <= 53 ug/L Nov
001Manganese, dissolved [as Mn]DAILY MX <= 53 ug/L Dec
001Manganese, dissolved [as Mn]30DA AVG <= .61 lb/d Jan
001Manganese, dissolved [as Mn]30DA AVG <= .61 lb/d Feb
001Manganese, dissolved [as Mn]30DA AVG <= .57 lb/d Mar
001Manganese, dissolved [as Mn]30DA AVG <= .57 lb/d Apr
001Manganese, dissolved [as Mn]30DA AVG <= .66 lb/d May
001Manganese, dissolved [as Mn]30DA AVG <= 1.33 lb/d Jun
001Manganese, dissolved [as Mn]30DA AVG <= 1.11 lb/d Jul
001Manganese, dissolved [as Mn]30DA AVG <= 1.01 lb/d Aug
001Manganese, dissolved [as Mn]30DA AVG <= .9 lb/d Sep
001Manganese, dissolved [as Mn]30DA AVG <= .82 lb/d Oct
001Manganese, dissolved [as Mn]30DA AVG <= .74 lb/d Nov
001Manganese, dissolved [as Mn]30DA AVG <= .68 lb/d Dec
001Manganese, dissolved [as Mn]30DA AVG <= .61 lb/d Jan
001Manganese, dissolved [as Mn]30DA AVG <= .61 lb/d Feb
001Manganese, dissolved [as Mn]30DA AVG <= .57 lb/d Mar
001Manganese, dissolved [as Mn]30DA AVG <= .57 lb/d Apr
001Manganese, dissolved [as Mn]30DA AVG <= .66 lb/d May
001Manganese, dissolved [as Mn]30DA AVG <= 1.33 lb/d Jun
001Manganese, dissolved [as Mn]30DA AVG <= 1.11 lb/d Jul
001Manganese, dissolved [as Mn]30DA AVG <= 1.01 lb/d Aug
001Manganese, dissolved [as Mn]30DA AVG <= .82 lb/d Sep
001Manganese, dissolved [as Mn]30DA AVG <= .82 lb/d Oct
001Manganese, dissolved [as Mn]30DA AVG <= .74 lb/d Nov
001Manganese, dissolved [as Mn]30DA AVG <= .68 lb/d Dec
001Nickel, total recoverable30DA AVG report only all year
001Nickel, total recoverable30DA AVG <= 101 ug/L all year
001Cadmium, total recoverable30DA AVG <= 5.1 ug/L all year
001Cadmium, total recoverableDAILY MX report only all year
001Cadmium, total recoverableROLL AVG report only all year
001Cadmium, total recoverableROLL AVG <= 1.5 ug/L all year
001Lead, total recoverableDAILY MX report only all year
001Lead, total recoverableDAILY MX <= 51 ug/L all year
001Lead, total recoverableROLL AVG report only all year
001Lead, total recoverableROLL AVG <= 11 ug/L all year
001Chromium, total recoverableDAILY MX <= 50 ug/L all year
001Molybdenum, total recoverable30DA AVG report only all year
001Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
001Chromium, hexavalent dissolved [as Cr]ROLL AVG report only all year
001Zinc, potentially dissolved30DA AVG report only all year
001Zinc, potentially dissolved30DA AVG <= 165 ug/L all year
001Zinc, potentially dissolvedDAILY MX report only all year
001Zinc, potentially dissolvedDAILY MX <= 235 ug/L all year
001Silver, potentially dissolved30DA AVG <= .71 ug/L all year
001Silver, potentially dissolved30DA AVG <= .092 ug/L all year
001Silver, potentially dissolvedDAILY MX report only all year
001Silver, potentially dissolvedDAILY MX <= 2.5 ug/L all year
001Copper, potentially dissolved30DA AVG <= 160 ug/L all year
001Copper, potentially dissolved30DA AVG <= 8.3 ug/L all year
001Copper, potentially dissolvedDAILY MX <= 160 ug/L all year
001Copper, potentially dissolvedDAILY MX <= 15 ug/L all year
001Cadmium, potentially dissolvd30DA AVG <= 3.2 ug/L all year
001Cadmium, potentially dissolvd30DA AVG <= .46 ug/L all year
001Cadmium, potentially dissolvdDAILY MX report only all year
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L all year
001Lead, potentially dissolvd30DA AVG <= 120 ug/L all year
001Lead, potentially dissolvd30DA AVG <= 2.9 ug/L all year
001Lead, potentially dissolvdDAILY MX <= 120 ug/L all year
001Lead, potentially dissolvdDAILY MX <= 74 ug/L all year
001Lead, potentially dissolvdROLL AVG report only all year
001Lead, potentially dissolvdROLL AVG <= 2.9 ug/L all year
001Manganese, potentially dissolvd30DA AVG <= 3000 ug/L all year
001Manganese, potentially dissolvdDAILY MX <= 3174 ug/L all year
001Nickel, potentially dissolvd30DA AVG <= 75 ug/L all year
001Nickel, potentially dissolvd30DA AVG <= 21 ug/L all year
001Nickel, potentially dissolvdDAILY MX report only all year
001Nickel, potentially dissolvdDAILY MX <= 525 ug/L all year
001Selenium, potentially dissolvd30DA AVG <= 4.7 ug/L all year
001Selenium, potentially dissolvdDAILY MX <= 19 ug/L all year
001Selenium, potentially dissolvdROLL AVG report only all year
001Selenium, potentially dissolvdROLL AVG <= 1.1 ug/L all year
001Uranium, potentially dissolvd30DA AVG report only all year
001Uranium, potentially dissolvdDAILY MX report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Radium 226 + radium 228, total30DA AVG report only all year
001Uranium, totalDAILY MX report only all year
001Flow, in conduit or thru treatment plant30DA AVG <= 4.7 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total [low level]30DA AVG <= .63 ug/L all year
001Mercury, total [low level]30DA AVG <= .01 ug/L all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
001Sulfate30DA AVG report only all year
001Boron, total30DA AVG report only all year
001Oil and grease visualINST MAX report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 99 tox chronic all year
001Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 99 tox chronic all year
UST1Temperature, water deg. centigradeMX WK AV report only all year
UST1Temperature, water deg. centigradeDAILY MX 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