Clean Water Act discharge permit · NPDES COG130002
CHALK CLIFFS REARING UNIT, Nathrop (Historical), CO: NPDES COG130002 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
CHALK CLIFFS REARING UNIT, held by Colorado Parks and Wildlife, holds NPDES permit COG130002, which discharges to Chalk Creek. EPA’s file records it issued April 1, 2011 and expiring March 31, 2016. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CHALK CLIFFS REARING UNIT |
|---|---|
| Permittee as filed | Colorado Parks and Wildlife |
| NPDES ID | COG130002 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 1, 2011 |
| Expiration date | March 31, 2016 |
| Address | Nathrop (Historical), CO 81236 |
| Receiving water | CHALK CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Outlet Chalk Creek (HUC 110200010502) |
| SIC | 0273 – Animal Aquaculture |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 6Pollutants on file
- 6Under a numeric limit
- 4With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| pH | 2 | 3 | 3 | June 30, 2012 | |
| Oil and grease visual | 1 | 42 | 0 | ||
| Temperature, water deg. centigrade | 2 | 6 | 0 | ||
| Solids, total suspended | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Oil and grease | 1 | 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 COG130002.
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, COG130002.
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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 COG130002 there.
Nearby on the register
- Discharge permits in Nathrop (Historical)
- Every permit record in Nathrop (Historical), A to Z
- Discharge permits in Colorado
- Every permit record in Colorado, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.