Clean Water Act discharge permit · NPDES COG501594
PARSONS PIT, Greeley, CO: NPDES COG501594 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
PARSONS PIT, held by Martin Marietta Materials Inc, holds NPDES permit COG501594, which discharges to Cache La Poudre River. EPA’s file records it issued December 9, 2015 and expiring December 31, 2017. 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 | PARSONS PIT |
|---|---|
| Permittee as filed | Martin Marietta Materials Inc |
| NPDES ID | COG501594 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 9, 2015 |
| Expiration date | December 31, 2017 |
| Address | Greeley, CO 80631 |
| Receiving water | Cache la Poudre River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | 101900071005 (HUC 101900071005) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 6Pollutants on file
- 6Under a numeric limit
- 3With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 4 | 4 | June 30, 2023 | 480% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 3 | 3 | March 31, 2020 | 30% over the limit |
| pH | 4 | 1 | 1 | December 31, 2019 | |
| Selenium, potentially dissolvd | 4 | 0 | 0 | ||
| Oil and grease | 2 | 0 | 0 | ||
| Oil and grease visual | 2 | 0 | 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 COG501594.
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 COG501594 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.