Clean Water Act discharge permit · NPDES COR901743
MILLSTONE WEBER DEN AIRPORT CONCRETE BATCH PLANT 7007, Denver, CO: NPDES COR901743 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MILLSTONE WEBER DEN AIRPORT CONCRETE BATCH PLANT 7007, held by Millstone Weber LLC, holds NPDES permit COR901743, which discharges to Upper Hayesmount Tributary. EPA’s file records it issued June 18, 2026 and expiring June 30, 2029. 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.
What the register holds for MILLSTONE WEBER DEN AIRPORT CONCRETE BATCH PLANT 7007: its NPDES ID, its permit type and status, its dates, its address in Denver, Colorado, its receiving water, and 4 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR901743.
Identity
| Facility as filed | MILLSTONE WEBER DEN AIRPORT CONCRETE BATCH PLANT 7007 |
|---|---|
| Permittee as filed | Millstone Weber LLC |
| NPDES ID | COR901743 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | June 18, 2026 |
| Expiration date | June 30, 2029 |
| Address | Denver, CO 80249 |
| Receiving water | Upper Hayesmount Tributary |
| Subwatershed | Third Creek (HUC 101900030404) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 4Pollutants on file
- 4Under a numeric limit
- 0With 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 |
|---|---|---|---|---|---|
| pH | 2 | 0 | 0 | ||
| Solids, total suspended | 1 | 0 | 0 | ||
| Iron, total recoverable | 1 | 0 | 0 | ||
| Are You In Compliance | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COR901743.
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 COR901743.
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.
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 COR901743 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.