Clean Water Act discharge permit · NPDES COG603158
1800 LARIMER LLC, Denver County, CO: NPDES COG603158 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
1800 LARIMER LLC, held by 1800 Larimer LLC, holds NPDES permit COG603158, which discharges to Cherry Creek. EPA’s file records it issued April 15, 2010 and expiring December 31, 2012. 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 | 1800 LARIMER LLC |
|---|---|
| Permittee as filed | 1800 Larimer LLC |
| NPDES ID | COG603158 |
| 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 | April 15, 2010 |
| Expiration date | December 31, 2012 |
| Address | Denver County, CO 80202 |
| Receiving water | Cherry Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Cherry Creek-South Platte River (HUC 101900030304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 5Under a numeric limit
- 11With 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 |
|---|---|---|---|---|---|
| pH | 2 | 29 | 3 | December 31, 2020 | |
| Iron, total recoverable | 0 | 29 | 0 | ||
| Selenium, potentially dissolvd | 0 | 29 | 0 | ||
| Toluene | 0 | 29 | 0 | ||
| Benzene | 0 | 29 | 0 | ||
| Ethylbenzene | 0 | 29 | 0 | ||
| Xylene [mix of m+o+p] | 0 | 29 | 0 | ||
| Solids, total suspended | 2 | 26 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 20 | 0 | ||
| Oil and grease visual | 1 | 16 | 0 | ||
| Oil and grease | 1 | 15 | 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 COG603158.
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 COG603158 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.