Clean Water Act discharge permit · NPDES ARG500006
MARTIN MARIETTA MATERIALS, INC-CAVANAUGH QUARRY, Black Rock, AR: NPDES ARG500006 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
MARTIN MARIETTA MATERIALS, INC-CAVANAUGH QUARRY, held by Martin Marietta Materials, Inc., holds NPDES permit ARG500006, which discharges to Stennitt Cr,Spring R,Black R. EPA’s file records it issued August 1, 2015 and expiring January 31, 2021.
Identity
| Facility as filed | MARTIN MARIETTA MATERIALS, INC-CAVANAUGH QUARRY |
|---|---|
| Permittee as filed | Martin Marietta Materials, Inc. |
| NPDES ID | ARG500006 |
| 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 | August 1, 2015 |
| Expiration date | January 31, 2021 |
| Address | Black Rock, AR 72415 |
| Receiving water | Stennitt Cr,Spring R,Black R |
| Subwatershed | Brushy Creek-Spring River (HUC 110100100507) |
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| Turbidity | 4 | 11 | 5 | July 31, 2025 | |
| Oxygen demand, chem. [low level] [COD] | 4 | 12 | 4 | September 30, 2024 | 126% over the limit |
| Solids, total suspended | 12 | 21 | 3 | December 31, 2019 | 53% over the limit |
| pH | 18 | 24 | 0 | ||
| Oil & Grease | 12 | 18 | 0 | ||
| Flow, in conduit or thru treatment plant | 12 | 12 | 0 | ||
| Solids, total dissolved | 12 | 10 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES ARG500006.
Inspections
EPA’s inspection file holds no inspection for NPDES ARG500006.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES ARG500006.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.