Clean Water Act discharge permit · NPDES COG500077
LYONS QUARRY, Lyons, CO: NPDES COG500077 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
LYONS QUARRY, held by Aggregate Industries WCR Inc, holds NPDES permit COG500077, which discharges to South St. Vrain River. EPA’s file records it issued June 16, 2008 and expiring June 30, 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 | LYONS QUARRY |
|---|---|
| Permittee as filed | Aggregate Industries WCR Inc |
| NPDES ID | COG500077 |
| 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 |
| Issued | June 16, 2008 |
| Expiration date | June 30, 2013 |
| Address | Lyons, CO 80540 |
| Receiving water | SOUTH ST. VRAIN RIVER |
| Subwatershed | Outlet South Saint Vrain Creek (HUC 101900050103) |
| SIC | 1442 – Construction Sand And Gravel |
| Other EPA IDs (FRS) | ICIS-AIR source CO0000000801300009 |
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
- 6Pollutants on file
- 6Under a numeric limit
- 6With 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 | 4 | 10 | 0 | ||
| Solids, total suspended | 4 | 10 | 0 | ||
| Selenium, potentially dissolvd | 4 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 10 | 0 | ||
| Oil and grease | 2 | 5 | 0 | ||
| Oil and grease visual | 2 | 5 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG500077.
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 COG500077.
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 COG500077 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.