Clean Water Act discharge permit · NPDES COG500312
MESA GRAVEL PIT, Hayden, CO: NPDES COG500312 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MESA GRAVEL PIT, held by Peabody Sage Creek Coal Mining LLC, holds NPDES permit COG500312, which discharges to Sage Creek Or Yampa River. EPA’s file records it issued June 25, 2008 and expiring June 30, 2013. 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 | MESA GRAVEL PIT |
|---|---|
| Permittee as filed | Peabody Sage Creek Coal Mining LLC |
| NPDES ID | COG500312 |
| 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 | June 25, 2008 |
| Expiration date | June 30, 2013 |
| Address | Hayden, CO 81639 |
| Receiving water | SAGE CREEK OR YAMPA RIVER |
| Subwatershed | Sage Creek (HUC 140500010510) |
| SIC | 1442 – Construction Sand And Gravel |
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
- 8Pollutants on file
- 7Under a numeric limit
- 8With 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 |
|---|---|---|---|---|---|
| pH | 4 | 2 | 0 | ||
| Solids, total suspended | 4 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 2 | 0 | ||
| Solids, total dissolved | 4 | 2 | 0 | ||
| Selenium, potentially dissolvd | 2 | 2 | 0 | ||
| Oil and grease | 2 | 1 | 0 | ||
| Oil and grease visual | 2 | 1 | 0 | ||
| Flow, total | 0 | 1 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG500312.
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 COG500312.
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.
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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 COG500312 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.