NPDES permit CO0041700 · Major POTW · administratively continued, expires 2017-11-30 · EPA's file as of 2026-09-19
Check this month's numbers before you fileThis permit expired on 2017-11-30 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.
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).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 002 | Temperature, water deg. centigrade | MX WK AV | report only | all year |
| 002 | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| 002 | BOD, 5-day, 20 deg. C | 30DA AVG | <= 30 mg/L | all year |
| 002 | BOD, 5-day, 20 deg. C | MX 7D AV | <= 45 mg/L | all year |
| 002 | pH | MINIMUM | >= 6.5 SU | all year |
| 002 | pH | MAXIMUM | <= 9 SU | all year |
| 002 | Solids, total suspended | 30DA AVG | <= 30 mg/L | all year |
| 002 | Solids, total suspended | MX 7D AV | <= 45 mg/L | all year |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 13 mg/L | Jan |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 10 mg/L | Feb |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 9.2 mg/L | Mar |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 7.7 mg/L | Apr |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 8.2 mg/L | May |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 7.5 mg/L | Jun |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 4.9 mg/L | Jul |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 4.7 mg/L | Aug |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 6.3 mg/L | Sep |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 13 mg/L | Oct |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 22 mg/L | Nov |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 21 mg/L | Dec |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 14 mg/L | Jan |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 14 mg/L | Feb |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 19 mg/L | Mar |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 18 mg/L | Apr |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 24 mg/L | May |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 40 mg/L | Jun |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 41 mg/L | Jul |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 43 mg/L | Aug |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 36 mg/L | Sep |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 41 mg/L | Oct |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 35 mg/L | Nov |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 25 mg/L | Dec |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 5.1 mg/L | Jan |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 5.2 mg/L | Feb |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 5.4 mg/L | Mar |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 2.7 mg/L | Apr |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 2.8 mg/L | May |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 2.7 mg/L | Jun |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 2.1 mg/L | Aug |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 2.4 mg/L | Sep |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 3.7 mg/L | Oct |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 5.5 mg/L | Nov |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 6.1 mg/L | Dec |
| 002 | Nitrogen, ammonia total [as N] | ROLL AVG | <= 2.1 mg/L | Jul |
| 002 | Cyanide, weak acid, dissociable | 30DA AVG | report only | all year |
| 002 | Cyanide, weak acid, dissociable | 30DA AVG | report only | all year |
| 002 | Cyanide, weak acid, dissociable | DAILY MX | report only | all year |
| 002 | Cyanide, weak acid, dissociable | DAILY MX | report only | all year |
| 002 | Cyanide, weak acid, dissociable | ROLL AVG | report only | all year |
| 002 | Chromium, hexavalent dissolved [as Cr] | 30DA AVG | report only | all year |
| 002 | Chromium, hexavalent dissolved [as Cr] | DAILY MX | report only | all year |
| 002 | Copper, potentially dissolved | 30DA AVG | report only | all year |
| 002 | Copper, potentially dissolved | DAILY MX | report only | all year |
| 002 | Copper, potentially dissolved | ROLL AVG | report only | all year |
| 002 | Copper, potentially dissolved | ROLL AVG | <= 15 ug/L | all year |
| 002 | Cadmium, potentially dissolvd | 30DA AVG | report only | all year |
| 002 | Cadmium, potentially dissolvd | 30DA AVG | report only | all year |
| 002 | Cadmium, potentially dissolvd | DAILY MX | report only | all year |
| 002 | Cadmium, potentially dissolvd | DAILY MX | report only | all year |
| 002 | Cadmium, potentially dissolvd | ROLL AVG | report only | all year |
| 002 | Selenium, potentially dissolvd | 30DA AVG | report only | all year |
| 002 | Selenium, potentially dissolvd | DAILY MX | report only | all year |
| 002 | Selenium, potentially dissolvd | ROLL AVG | report only | all year |
| 002 | Oil and grease | INST MAX | <= 10 mg/L | all year |
| 002 | Flow, in conduit or thru treatment plant | 30DA AVG | <= 6 MGD | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 002 | Chlorine, total residual | 30DA AVG | <= .026 mg/L | all year |
| 002 | Chlorine, total residual | INST MAX | <= .046 mg/L | all year |
| 002 | Chlorine, total residual | ROLL AVG | <= 5.2 mg/L | all year |
| 002 | E. coli | 30DA GM | <= 242 #/100mL | all year |
| 002 | E. coli | MX 7D GM | <= 484 #/100mL | all year |
| 002 | E. coli | ROLL AVG | report only | all year |
| 002 | Nonylphenol | 30DA AVG | report only | all year |
| 002 | Mercury, total [as Hg] | 30DA AVG | report only | all year |
| 002 | Mercury, total [as Hg] | ROLL AVG | report only | all year |
| 002 | BOD, 5-day, percent removal | MO AV MN | >= 85 % | all year |
| 002 | Solids, suspended percent removal | MO AV MN | >= 85 % | all year |
| 002 | Oil and grease visual | INST MAX | report only | all year |
| 002 | Static Renewal 7 Day Chronic Ceriodaphnia dubia | SINGSAMP | report only | all year |
| 002 | Static Renewal 7 Day Chronic Ceriodaphnia dubia | MN VALUE | report only | all year |
| 002 | Static Renewal 7 Day Chronic Ceriodaphnia dubia | MN VALUE | >= 42 tox chronic | all year |
| 002 | Static Renewal 7 Day Chronic Pimephales promelas | SINGSAMP | report only | all year |
| 002 | Static Renewal 7 Day Chronic Pimephales promelas | MN VALUE | report only | all year |
| 002 | Static Renewal 7 Day Chronic Pimephales promelas | MN VALUE | >= 42 tox chronic | 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 | 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 | 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 | 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 | 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 | MX 7D AV | report only | all year |
| 300 | Solids, total suspended | 30DA AVG | 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 | 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 |
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