Clean Water Act discharge permit · NPDES CO0001112
VALMONT STATION, Boulder, CO: NPDES CO0001112 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 18Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
VALMONT STATION, held by Public Service Co of Colorado, holds NPDES permit CO0001112, which discharges to Leggett Res/Boulder Crk, Et Al. EPA’s file records it issued October 18, 2004 and expiring November 30, 2009. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | VALMONT STATION |
|---|---|
| Permittee as filed | Public Service Co of Colorado |
| NPDES ID | CO0001112 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 18, 2004 |
| Expiration date | November 30, 2009 |
| Address | Boulder, CO 80301 |
| Receiving water | LEGGETT RES/BOULDER CRK, ET AL |
| Subwatershed | Lower South Boulder Creek (HUC 101900050504) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 18Under a numeric limit
- 16With a violation of any kind
- 7With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 16 | 18 | 8 | March 31, 2006 | 247% over the limit |
| pH | 14 | 10 | 4 | November 30, 2006 | |
| BOD, 5-day, 20 deg. C | 4 | 6 | 4 | November 30, 1995 | 383% over the limit |
| Coliform, fecal general | 8 | 5 | 3 | January 31, 2002 | 320% over the limit |
| Solids, total suspended | 16 | 6 | 2 | August 31, 1997 | 2,520% over the limit |
| Zinc, potentially dissolved | 6 | 2 | 2 | July 31, 2007 | 21% over the limit |
| Temperature, water deg. fahrenheit | 4 | 1 | 1 | August 31, 1995 | 2% over the limit |
| Oil and grease visual | 7 | 10 | 0 | ||
| Sodium adsorption ratio | 0 | 4 | 0 | ||
| %Effect Static Renewal 7Day Chronic Pimephales promelas | 2 | 3 | 0 | ||
| Iron, total recoverable | 6 | 2 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 2 | 2 | 0 | ||
| Bicarbonate ion- [as HCO3] | 0 | 2 | 0 | ||
| E. coli | 0 | 2 | 0 | ||
| Chlorine, total residual | 6 | 1 | 0 | ||
| Oil & Grease | 0 | 1 | 0 | ||
| Oil and grease | 10 | 0 | 0 | ||
| Copper, potentially dissolved | 6 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 0 | 0 | ||
| Iron, dissolved [as Fe] | 2 | 0 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 2 | 0 | 0 | ||
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES CO0001112.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID CO0001112 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.