Clean Water Act discharge permit · NPDES COG501549
BERNHARDT GRAVEL MINE, Milliken, CO: NPDES COG501549 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
BERNHARDT GRAVEL MINE, held by Bestway Concrete & Aggregates, holds NPDES permit COG501549, which discharges to Big Thompson River. EPA’s file records it issued February 15, 2013 and expiring June 30, 2013. 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 | BERNHARDT GRAVEL MINE |
|---|---|
| Permittee as filed | Bestway Concrete & Aggregates |
| NPDES ID | COG501549 |
| 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 | February 15, 2013 |
| Expiration date | June 30, 2013 |
| Address | Milliken, CO 80543 |
| Receiving water | Big Thompson River |
| Subwatershed | Outlet Big Thompson River (HUC 101900060607) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 7Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 15 | 5 | December 31, 2025 | 518% over the limit |
| pH | 2 | 10 | 0 | ||
| Selenium, potentially dissolvd | 2 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 10 | 0 | ||
| Iron, total recoverable | 2 | 6 | 0 | ||
| Oil and grease | 1 | 5 | 0 | ||
| Oil and grease visual | 1 | 5 | 0 | ||
| Conductivity | 0 | 2 | 0 | ||
| Flow, total | 0 | 2 | 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 COG501549.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 COG501549 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.