Clean Water Act discharge permit · NPDES COP900099
GOLDEN ALUMINUM, Weld County, CO: NPDES COP900099 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
GOLDEN ALUMINUM, held by Golden Aluminum, holds NPDES permit COP900099. EPA’s file records it issued May 7, 2008 and expiring May 6, 2013. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | GOLDEN ALUMINUM |
|---|---|
| Permittee as filed | Golden Aluminum |
| NPDES ID | COP900099 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | State-issued individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 7, 2008 |
| Expiration date | May 6, 2013 |
| Address | Weld County, CO 80621 |
| Subwatershed | City of Fort Lupton-South Platte River (HUC 101900030602) |
| SIC | 3365 – Aluminum Foundries |
| Other EPA IDs (FRS) | RCRA handler COD102545621; ICIS-AIR source CO0000000812300089 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 20Pollutants on file
- 14Under a numeric limit
- 20With 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 |
|---|---|---|---|---|---|
| Chromium, total [as Cr] | 6 | 78 | 6 | December 31, 2012 | 1,781% over the limit |
| Oil & Grease | 0 | 4 | 2 | December 31, 2001 | 43% over the limit |
| Zinc, total [as Zn] | 6 | 69 | 1 | December 31, 2012 | 95% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 130 | 0 | ||
| Cyanide | 0 | 124 | 0 | ||
| Chromium | 0 | 124 | 0 | ||
| Aluminum | 0 | 122 | 0 | ||
| Cyanide, total [as CN] | 6 | 76 | 0 | ||
| Zinc | 0 | 70 | 0 | ||
| Oil and grease | 0 | 36 | 0 | ||
| Total toxic organics [TTO] [40 CFR433] | 2 | 14 | 0 | ||
| pH | 4 | 4 | 0 | ||
| Volume | 4 | 2 | 0 | ||
| Cadmium, total [as Cd] | 2 | 2 | 0 | ||
| Copper, total [as Cu] | 2 | 2 | 0 | ||
| Lead, total [as Pb] | 2 | 2 | 0 | ||
| Nickel, total [as Ni] | 2 | 2 | 0 | ||
| Silver, total [as Ag] | 2 | 2 | 0 | ||
| Oil and grease | 2 | 2 | 0 | ||
| Total toxic organics [TTO] [40 CFR465] | 1 | 1 | 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 COP900099.
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 COP900099 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.