Clean Water Act discharge permit · NPDES COR900342
WEST PLANT 11, Arvada, CO: NPDES COR900342 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 3Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
WEST PLANT 11, held by Ready Mixed Concrete Co, holds NPDES permit COR900342, which discharges to Unnamed Tributary - Coal Creek. EPA’s file records it issued May 21, 2012 and expiring June 30, 2017. 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 | WEST PLANT 11 |
|---|---|
| Permittee as filed | Ready Mixed Concrete Co |
| NPDES ID | COR900342 |
| 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 |
| Program | Industrial stormwater |
| Issued | May 21, 2012 |
| Expiration date | June 30, 2017 |
| Address | Arvada, CO 80002 |
| Receiving water | Unnamed tributary - Coal Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Outlet Clear Creek (HUC 101900040404) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 3Pollutants on file
- 3Under a numeric limit
- 3With 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 |
|---|---|---|---|---|---|
| Selenium, potentially dissolvd | 4 | 48 | 0 | ||
| Solids, total suspended | 4 | 47 | 0 | ||
| Iron, total [as Fe] | 4 | 47 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COR900342.
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 COR900342.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 COR900342 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.