Clean Water Act discharge permit · NPDES COG590035
CAVERN SPRINGS MHC LLC, Glenwood Springs, CO: NPDES COG590035 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
CAVERN SPRINGS MHC LLC, held by Cavern Springs MHC LLC, holds NPDES permit COG590035, which discharges to Roaring Fork River. EPA’s file records it issued December 14, 2021 and expiring March 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 | CAVERN SPRINGS MHC LLC |
|---|---|
| Permittee as filed | Cavern Springs MHC LLC |
| NPDES ID | COG590035 |
| 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 | December 14, 2021 |
| Expiration date | March 31, 2026 |
| Address | Glenwood Springs, CO 81601 |
| Receiving water | Roaring Fork River |
| Subwatershed | Outlet Roaring Fork River (HUC 140100041003) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 13Under a numeric limit
- 3With a violation of any kind
- 3With 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 | 4 | 2 | 2 | March 31, 2024 | 96% over the limit |
| Solids, suspended percent removal | 1 | 2 | 2 | March 31, 2024 | 27% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 1 | 1 | November 30, 2025 | 20% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| Solids, total dissolved | 4 | 0 | 0 | ||
| Plant capacity fact. percent of capacity | 2 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| Oil and grease | 1 | 0 | 0 | ||
| Chlorine, total residual | 1 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Oil and grease visual | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 4, 2024 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
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 COG590035 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.