Clean Water Act discharge permit · NPDES COG501596
CEMEX SANDSTONE QUARRY, Lyons, CO: NPDES COG501596 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
CEMEX SANDSTONE QUARRY, held by CEMEX Construction Materials South LLC, holds NPDES permit COG501596, which discharges to Unnamed Tributary - St Vrain Creek. EPA’s file records it issued March 11, 2016 and expiring December 31, 2017. 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.
What the register holds for CEMEX SANDSTONE QUARRY: its NPDES ID, its permit type and status, its dates, its address in Lyons, Colorado, its receiving water, and 5 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COG501596.
Identity
| Facility as filed | CEMEX SANDSTONE QUARRY |
|---|---|
| Permittee as filed | CEMEX Construction Materials South LLC |
| NPDES ID | COG501596 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 11, 2016 |
| Expiration date | December 31, 2017 |
| Address | Lyons, CO 80540 |
| Receiving water | unnamed tributary - St Vrain Creek |
| Subwatershed | Indian Mountain-Saint Vrain Creek (HUC 101900050701) |
| SIC | 1429 – Crushed And Broken Stone |
| Other EPA IDs (FRS) | RCRA handler COD980957823; ICIS-AIR source CO0000000801300003 |
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
- 5Pollutants on file
- 5Under 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 | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Oil and grease | 1 | 0 | 0 | ||
| Oil and grease visual | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG501596.
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 COG501596.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, COG501596.
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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 COG501596 there.
Nearby on the register
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- Every permit record in Colorado, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.