Clean Water Act discharge permit · NPDES COG315227
CDOT MATERIALS TESTING LAB, Denver County, CO: NPDES COG315227 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 24Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
CDOT MATERIALS TESTING LAB, held by Colorado Dept of Transportation, holds NPDES permit COG315227, which discharges to Cherry Creek. EPA’s file records it issued March 16, 2011 and expiring October 31, 2015. 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 | CDOT MATERIALS TESTING LAB |
|---|---|
| Permittee as filed | Colorado Dept of Transportation |
| NPDES ID | COG315227 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 16, 2011 |
| Expiration date | October 31, 2015 |
| Address | Denver County, CO 80222 |
| Receiving water | Cherry Creek |
| Subwatershed | Cherry Creek-South Platte River (HUC 101900030304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 24Pollutants on file
- 24Under a numeric limit
- 22With 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 |
|---|---|---|---|---|---|
| 1,4-Dioxane | 4 | 4 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Solids, total suspended | 2 | 4 | 0 | ||
| 1,2-cis-Dichloroethene | 2 | 4 | 0 | ||
| 1,2-Dichloroethane | 2 | 4 | 0 | ||
| Chloroform | 2 | 4 | 0 | ||
| Toluene | 2 | 4 | 0 | ||
| Benzene | 2 | 4 | 0 | ||
| Chlorobenzene | 2 | 4 | 0 | ||
| Methylene chloride | 2 | 4 | 0 | ||
| Tetrachloroethylene | 2 | 4 | 0 | ||
| 1,1-Dichloroethane | 2 | 4 | 0 | ||
| 1,1-Dichloroethylene | 2 | 4 | 0 | ||
| 1,1,2-Trichloroethane | 2 | 4 | 0 | ||
| trans-1,2-Dichloroethylene | 2 | 4 | 0 | ||
| Ethylbenzene | 2 | 4 | 0 | ||
| Trichloroethylene | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Chlorine, total residual | 2 | 4 | 0 | ||
| Oil and grease | 1 | 2 | 0 | ||
| 1,1,1-Trichloroethane | 1 | 2 | 0 | ||
| Oil and grease visual | 1 | 2 | 0 | ||
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | 1 | 0 | 0 | ||
| LC50 Static Renewal 96Hr Acute Pimephales promelas | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG315227.
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 COG315227.
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 COG315227 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.