NPDES permit CO0048241 · Major POTW · administratively continued, expires 2026-02-28 · EPA's file as of 2026-09-19
Check this month's numbers before you fileThis permit expired on 2026-02-28 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.
Last period with anything received: 2026-07-31. Most often over: Nitrogen, nitrite total [as N] (11), Nitrogen, inorganic total (11), Cyanide, weak acid, dissociable (1).
Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Temperature, water deg. centigrade | MX WK AV | report only | all year |
| 001 | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| 001 | BOD, 5-day, 20 deg. C | 30DA AVG | <= 30 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MX 7D AV | <= 45 mg/L | all year |
| 001 | pH | MINIMUM | >= 6.5 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | 30DA AVG | <= 30 mg/L | all year |
| 001 | Solids, total suspended | MX 7D AV | <= 45 mg/L | all year |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 39 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 26 mg/L | Feb |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 29 mg/L | Jan |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 15 mg/L | May |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 19 mg/L | Jul |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 16 mg/L | Jun |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 14 mg/L | Aug |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 26 mg/L | Dec |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 31 mg/L | Mar |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 11 mg/L | Sep |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 10 mg/L | Oct |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 30 mg/L | Nov |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 10 mg/L | Oct |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 6.8 mg/L | Feb |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 8.2 mg/L | Mar |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 9.3 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 15 mg/L | May |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 16 mg/L | Jun |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 19 mg/L | Jul |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 14 mg/L | Aug |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 11 mg/L | Sep |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 7.3 mg/L | Nov |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 6.6 mg/L | Dec |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= .98 mg/L | Jan |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 47 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 25 mg/L | Feb |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 34 mg/L | Jan |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 30 mg/L | May |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 53 mg/L | Jul |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 36 mg/L | Jun |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 53 mg/L | Aug |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 28 mg/L | Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 38 mg/L | Mar |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 25 mg/L | Sep |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 18 mg/L | Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 31 mg/L | Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 18 mg/L | Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 12 mg/L | Feb |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 13 mg/L | Mar |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 17 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 30 mg/L | May |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 36 mg/L | Jun |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 53 mg/L | Jul |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 53 mg/L | Aug |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 25 mg/L | Sep |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 13 mg/L | Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 10 mg/L | Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 10 mg/L | Jan |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 8 mg/L | Feb |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 7 mg/L | Mar |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 14 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 20 mg/L | May |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 10 mg/L | Jun |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 12 mg/L | Jul |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 20 mg/L | Aug |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 18 mg/L | Sep |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 11 mg/L | Oct |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 9 mg/L | Dec |
| 001 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 11 mg/L | Nov |
| 001 | Nitrogen, nitrite total [as N] | DAILY MX | <= 17 mg/L | all year |
| 001 | Nitrogen, nitrite total [as N] | DAILY MX | <= .05 mg/L | all year |
| 001 | Nitrogen, inorganic total | DAILY MX | <= 18 mg/L | all year |
| 001 | Nitrogen, inorganic total | DAILY MX | <= 12 mg/L | all year |
| 001 | Cyanide, weak acid, dissociable | DAILY MX | report only | all year |
| 001 | Cyanide, weak acid, dissociable | ROLL AVG | <= 17 ug/L | all year |
| 001 | Cyanide, weak acid, dissociable | ROLL AVG | <= 4.2 ug/L | all year |
| 001 | Cyanide, total [as CN] | DAILY MX | report only | all year |
| 001 | Chloride [as Cl] | 30DA AVG | report only | all year |
| 001 | Arsenic, total recoverable | 30DA AVG | <= 2.4 ug/L | all year |
| 001 | Iron, total recoverable | 30DA AVG | report only | all year |
| 001 | Iron, total recoverable | ROLL AVG | report only | all year |
| 001 | Arsenic, total [as As] | DAILY MX | report only | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | report only | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | report only | all year |
| 001 | Copper, total [as Cu] | DAILY MX | report only | all year |
| 001 | Iron, dissolved [as Fe] | 30DA AVG | report only | all year |
| 001 | Iron, dissolved [as Fe] | ROLL AVG | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | all year |
| 001 | Manganese, dissolved [as Mn] | 30DA AVG | report only | all year |
| 001 | Manganese, dissolved [as Mn] | DAILY MX | report only | all year |
| 001 | Molybdenum, total [as Mo] | DAILY MX | report only | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | report only | all year |
| 001 | Nickel, total recoverable | 30DA AVG | report only | all year |
| 001 | Silver, total [as Ag] | DAILY MX | report only | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | all year |
| 001 | Cadmium, total recoverable | DAILY MX | report only | all year |
| 001 | Lead, total recoverable | DAILY MX | report only | all year |
| 001 | Molybdenum, total recoverable | 30DA AVG | report only | all year |
| 001 | Selenium, total [as Se] | DAILY MX | report only | all year |
| 001 | Chromium, hexavalent dissolved [as Cr] | 30DA AVG | report only | all year |
| 001 | Chromium, hexavalent dissolved [as Cr] | DAILY MX | report only | all year |
| 001 | Chromium, hexavalent dissolved [as Cr] | ROLL AVG | report only | all year |
| 001 | Zinc, potentially dissolved | 30DA AVG | report only | all year |
| 001 | Zinc, potentially dissolved | DAILY MX | report only | all year |
| 001 | Zinc, potentially dissolved | ROLL AVG | report only | all year |
| 001 | Silver, potentially dissolved | 30DA AVG | report only | all year |
| 001 | Silver, potentially dissolved | DAILY MX | report only | all year |
| 001 | Silver, potentially dissolved | ROLL AVG | report only | all year |
| 001 | Copper, potentially dissolved | 30DA AVG | report only | all year |
| 001 | Copper, potentially dissolved | DAILY MX | report only | all year |
| 001 | Copper, potentially dissolved | ROLL AVG | report only | all year |
| 001 | Arsenic, potentially dissolved | DAILY MX | report only | all year |
| 001 | Arsenic, potentially dissolved | ROLL AVG | report only | all year |
| 001 | Cadmium, potentially dissolvd | 30DA AVG | report only | all year |
| 001 | Cadmium, potentially dissolvd | DAILY MX | report only | all year |
| 001 | Cadmium, potentially dissolvd | ROLL AVG | report only | all year |
| 001 | Chromium, trivalent, potentially dissolvd | 30DA AVG | report only | all year |
| 001 | Lead, potentially dissolvd | 30DA AVG | report only | all year |
| 001 | Lead, potentially dissolvd | DAILY MX | report only | all year |
| 001 | Lead, potentially dissolvd | ROLL AVG | report only | all year |
| 001 | Manganese, potentially dissolvd | 30DA AVG | report only | all year |
| 001 | Manganese, potentially dissolvd | DAILY MX | report only | all year |
| 001 | Manganese, potentially dissolvd | ROLL AVG | report only | all year |
| 001 | Nickel, potentially dissolvd | 30DA AVG | report only | all year |
| 001 | Nickel, potentially dissolvd | DAILY MX | report only | all year |
| 001 | Selenium, potentially dissolvd | 30DA AVG | report only | all year |
| 001 | Selenium, potentially dissolvd | DAILY MX | report only | all year |
| 001 | Selenium, potentially dissolvd | ROLL AVG | report only | all year |
| 001 | Uranium, potentially dissolvd | 30DA AVG | report only | all year |
| 001 | Uranium, potentially dissolvd | DAILY MX | report only | all year |
| 001 | Oil and grease | INST MAX | <= 10 mg/L | all year |
| 001 | Total phenols | DAILY MX | report only | all year |
| 001 | Chromium, trivalent total recoverable | DAILY MX | report only | all year |
| 001 | Chromium, trivalent total recoverable | ROLL AVG | report only | all year |
| 001 | Uranium, total | 30DA AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | 30DA AVG | <= 1.65 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Chlorine, total residual | 3B | <= .079 mg/L | all year |
| 001 | Chlorine, total residual | INST MAX | <= .11 mg/L | all year |
| 001 | Mercury, total [low level] | 30DA AVG | <= 82 ug/L | all year |
| 001 | Mercury, total [low level] | 30DA AVG | <= .072 ug/L | all year |
| 001 | Mercury, total [low level] | ROLL AVG | <= 10 ug/L | all year |
| 001 | Mercury, total [low level] | ROLL AVG | <= .011 ug/L | all year |
| 001 | Acrylamide | 30DA AVG | <= .16 ug/L | all year |
| 001 | E. coli | 30DA AVG | <= 733 #/100mL | all year |
| 001 | E. coli | MX 7D AV | <= 1466 #/100mL | all year |
| 001 | Nonylphenol | 30DA AVG | report only | all year |
| 001 | Nonylphenol | DAILY MX | report only | all year |
| 001 | Solids, total dissolved | 30DA AVG | report only | all year |
| 001 | Solids, total dissolved | 30DA AVG | report only | all year |
| 001 | Mercury, total [as Hg] | DAILY MX | report only | all year |
| 001 | BOD, 5-day, percent removal | MO AV MN | >= 85 % | all year |
| 001 | Solids, suspended percent removal | MO AV MN | >= 85 % | all year |
| 001 | Sulfate | 30DA AVG | report only | all year |
| 001 | Hydrocarbons, total petroleum | 30DA AVG | report only | all year |
| 001 | Hydrocarbons, total petroleum | DAILY MX | report only | all year |
| 001 | Oil and grease visual | INST MAX | report only | all year |
| 001 | LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | MN VALUE | >= 100 % | all year |
| 001 | LC50 Static Renewal 96Hr Acute Pimephales promelas | MN VALUE | >= 100 % | all year |
| 300 | Plant capacity fact. percent of capacity | 30DA AVG | report only | all year |
| 300 | Plant capacity fact. percent of capacity | 30DA AVG | report only | all year |
| 300 | BOD, 5-day, 20 deg. C | 30DA AVG | report only | all year |
| 300 | BOD, 5-day, 20 deg. C | MX 7D AV | report only | all year |
| 300 | BOD, 5-day, 20 deg. C | 30DA AVG | report only | all year |
| 300 | BOD, 5-day, 20 deg. C | MX 7D AV | report only | all year |
| 300 | Solids, total suspended | 30DA AVG | report only | all year |
| 300 | Solids, total suspended | MX 7D AV | report only | all year |
| 300 | Flow, in conduit or thru treatment plant | 30DA AVG | report only | all year |
| 300 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| UST1 | Temperature, water deg. centigrade | MX WK AV | report only | all year |
| UST1 | Temperature, water deg. centigrade | DAILY 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