Clean Water Act discharge permit · NPDES COG502213
TWO RIVERS SAND, GRAVEL AND RESERVOIR PROJECT, Milliken, CO: NPDES COG502213 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
TWO RIVERS SAND, GRAVEL AND RESERVOIR PROJECT, held by Raptor Materials LLC, holds NPDES permit COG502213, which discharges to South Platte River. EPA’s file records it issued September 27, 2022 and expiring December 31, 2026. 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 | TWO RIVERS SAND, GRAVEL AND RESERVOIR PROJECT |
|---|---|
| Permittee as filed | Raptor Materials LLC |
| NPDES ID | COG502213 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 27, 2022 |
| Expiration date | December 31, 2026 |
| Address | Milliken, CO 80543 |
| Receiving water | South Platte River |
| Subwatershed | Wildcat Mound-South Platte River (HUC 101900030604) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under 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 |
|---|---|---|---|---|---|
| Selenium, potentially dissolvd | 2 | 5 | 1 | June 30, 2026 | 16% over the limit |
| pH | 2 | 4 | 0 | ||
| Solids, total suspended | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Conductivity | 1 | 2 | 0 | ||
| Arsenic, total recoverable | 1 | 2 | 0 | ||
| Oil and grease | 1 | 2 | 0 | ||
| Flow, total | 1 | 2 | 0 | ||
| Oil and grease visual | 1 | 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 COG502213.
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 COG502213 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.