NPDES permit CO0032158 · Major NON-POTW · administratively continued, expires 2020-06-30 · EPA's file as of 2026-09-19
Check this month's numbers before you fileThis permit expired on 2020-06-30 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 (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 | Conductivity | 30DA AVG | report only | all year |
| 001 | Conductivity | 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 | BOD, 5-day, 20 deg. C | DAILY MX | <= 64 mg/L | all year |
| 001 | pH | MINIMUM | >= 6.5 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Bicarbonate ion- [as HCO3] | 30DA AVG | report only | all year |
| 001 | Bicarbonate ion- [as HCO3] | DAILY MX | report only | 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 | Solids, total suspended | DAILY MX | <= 130 mg/L | all year |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 9.8 mg/L | Jan |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 8.7 mg/L | Feb |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 11 mg/L | Mar |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 9.4 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 15 mg/L | May |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 13 mg/L | Jun |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 12 mg/L | Jul |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 10 mg/L | Aug |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 12 mg/L | Sep |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 11 mg/L | Oct |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 9.5 mg/L | Nov |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 9.2 mg/L | Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 16 mg/L | Jan |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 17 mg/L | Feb |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 23 mg/L | Mar |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 26 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 40 mg/L | May |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 55 mg/L | Jun |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 60 mg/L | Jul |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 60 mg/L | Aug |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 50 mg/L | Sep |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 26 mg/L | Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 20 mg/L | Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 17 mg/L | Dec |
| 001 | Nitrogen, inorganic total | Agg Rol Av | <= 15 mg/L | all year |
| 001 | Nitrogen, inorganic total | RM | report only | all year |
| 001 | Nitrogen, inorganic total | 95th % | <= 20 mg/L | all year |
| 001 | Nitrogen, inorganic total | 95th % | report only | all year |
| 001 | Phosphorus, total [as P] | Agg Rol Av | report only | all year |
| 001 | Phosphorus, total [as P] | Agg Rol Av | <= 1 mg/L | all year |
| 001 | Phosphorus, total [as P] | 95th % | report only | all year |
| 001 | Phosphorus, total [as P] | 95th % | <= 2.5 mg/L | all year |
| 001 | Cyanide, weak acid, dissociable | DAILY MX | <= 14.9 ug/L | all year |
| 001 | Calcium, total recoverable | 30DA AVG | report only | all year |
| 001 | Calcium, total recoverable | DAILY MX | report only | all year |
| 001 | Magnesium, total recoverable | 30DA AVG | report only | all year |
| 001 | Magnesium, total recoverable | DAILY MX | report only | all year |
| 001 | Sodium, total recoverable | 30DA AVG | report only | all year |
| 001 | Sodium, total recoverable | DAILY MX | report only | all year |
| 001 | Sodium adsorption ratio | 30DA AVG | report only | all year |
| 001 | Sodium adsorption ratio | DAILY MX | report only | all year |
| 001 | Sodium adsorption ratio | 30DA AVG | report only | all year |
| 001 | Sodium adsorption ratio | DAILY MX | report only | all year |
| 001 | Arsenic, total recoverable | 30DA AVG | <= 67 ug/L | all year |
| 001 | Arsenic, total recoverable | 30DA AVG | <= 29.6 ug/L | 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 | Silver, potentially dissolved | 30DA AVG | <= 14.2 ug/L | all year |
| 001 | Silver, potentially dissolved | DAILY MX | 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 | Cadmium, potentially dissolvd | 30DA AVG | <= 4.7 ug/L | all year |
| 001 | Cadmium, potentially dissolvd | DAILY MX | report only | all year |
| 001 | Chromium, trivalent, potentially dissolvd | 30DA AVG | report only | all year |
| 001 | Chromium, trivalent, potentially dissolvd | DAILY MX | report only | all year |
| 001 | Selenium, potentially dissolvd | 30DA AVG | <= 12.1 ug/L | all year |
| 001 | Selenium, potentially dissolvd | DAILY MX | report only | all year |
| 001 | Oil and grease | INST MAX | <= 10 mg/L | all year |
| 001 | Flow, in conduit or thru treatment plant | 30DA AVG | <= 1.8 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Chlorine, total residual | 30DA AVG | <= .043 mg/L | all year |
| 001 | Chlorine, total residual | INST MAX | <= .055 mg/L | all year |
| 001 | E. coli | MX 7D GM | report only | all year |
| 001 | E. coli | ROLL AVG | report only | all year |
| 001 | Mercury, total [as Hg] | 30DA AVG | <= .016 ug/L | all year |
| 001 | Oil and grease visual | INST MAX | report only | all year |
| 001 | Static Renewal 7 Day Chronic Ceriodaphnia dubia | SINGSAMP | report only | all year |
| 001 | Static Renewal 7 Day Chronic Ceriodaphnia dubia | MN VALUE | report only | all year |
| 001 | Static Renewal 7 Day Chronic Ceriodaphnia dubia | MN VALUE | >= 12 tox chronic | all year |
| 001 | Static Renewal 7 Day Chronic Pimephales promelas | SINGSAMP | report only | all year |
| 001 | Static Renewal 7 Day Chronic Pimephales promelas | MN VALUE | report only | all year |
| 001 | Static Renewal 7 Day Chronic Pimephales promelas | MN VALUE | >= 12 tox chronic | 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