Clean Water Act discharge permit · NPDES COS000008
DENVER INTERNATIONAL AIRPORT, Denver County, CO: NPDES COS000008 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
DENVER INTERNATIONAL AIRPORT, held by Denver City and County, holds NPDES permit COS000008, which discharges to Multiple Waterbodies On Site. EPA’s file records it issued September 28, 2009 and expiring October 31, 2014. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | DENVER INTERNATIONAL AIRPORT |
|---|---|
| Permittee as filed | Denver City and County |
| NPDES ID | COS000008 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | September 28, 2009 |
| Expiration date | October 31, 2014 |
| Address | Denver County, CO 80249 |
| Receiving water | Multiple Waterbodies on Site |
| Subwatershed | Third Creek (HUC 101900030404) |
| Other EPA IDs (FRS) | RCRA handler CO0000182287; ICIS-AIR source CO0000000803101260 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 9With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Oxygen, dissolved [DO] | 18 | 36 | 0 | ||
| pH | 18 | 35 | 0 | ||
| Solids, total suspended | 18 | 35 | 0 | ||
| Oil and grease | 18 | 35 | 0 | ||
| Propylene glycol, total | 18 | 35 | 0 | ||
| Chemical Oxygen Demand [COD] | 18 | 35 | 0 | ||
| Oil and grease visual | 18 | 35 | 0 | ||
| Nitrogen, Kjeldahl, total [TKN] [water] | 16 | 25 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 6 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COS000008.
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 COS000008.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, COS000008.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 COS000008 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.