Clean Water Act discharge permit · NPDES COG502107
STONEWALL SPRINGS QUARRY GRAVEL PIT, Pueblo County, CO: NPDES COG502107 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 2Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
STONEWALL SPRINGS QUARRY GRAVEL PIT, held by Oldcastle SW Group Inc dba United Companies, holds NPDES permit COG502107, which discharges to Chico Creek - Arkansas River. EPA’s file records it issued May 5, 2017 and expiring December 31, 2021. 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 | STONEWALL SPRINGS QUARRY GRAVEL PIT |
|---|---|
| Permittee as filed | Oldcastle SW Group Inc dba United Companies |
| NPDES ID | COG502107 |
| 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 | May 5, 2017 |
| Expiration date | December 31, 2021 |
| Address | Pueblo County, CO |
| Receiving water | Chico Creek - Arkansas River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | 110200021204 (HUC 110200021204) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 2Pollutants on file
- 2Under a numeric limit
- 2With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 1 | 18 | 0 | ||
| Iron, total [as Fe] | 1 | 18 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG502107.
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 COG502107.
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 COG502107 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.