Clean Water Act discharge permit · NPDES COG502232
CASTLE ROCK ROCK LLC, Castle Rock, CO: NPDES COG502232 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 1Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
CASTLE ROCK ROCK LLC, held by Castle Rock Rock LLC, holds NPDES permit COG502232, which discharges to East Plum Creek. EPA’s file records it issued November 25, 2024 and expiring December 31, 2026. 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 | CASTLE ROCK ROCK LLC |
|---|---|
| Permittee as filed | Castle Rock Rock LLC |
| NPDES ID | COG502232 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | November 25, 2024 |
| Expiration date | December 31, 2026 |
| Address | Castle Rock, CO 80104 |
| Receiving water | East Plum Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Middle East Plum Creek (HUC 101900020503) |
| 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
- 1Pollutants on file
- 1Under a numeric limit
- 1With 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 |
|---|---|---|---|---|---|
| Arsenic, total recoverable | 2 | 6 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG502232.
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 COG502232.
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 COG502232 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.