Clean Water Act discharge permit · NPDES SCG730448
OCONEE COUNTY ROCK QUARRY, Walhalla, SC: NPDES SCG730448 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
OCONEE COUNTY ROCK QUARRY, held by OCONEE COUNTY, holds NPDES permit SCG730448. EPA’s file records it issued September 29, 2017 and expiring December 31, 2022. 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 | OCONEE COUNTY ROCK QUARRY |
|---|---|
| Permittee as filed | OCONEE COUNTY |
| NPDES ID | SCG730448 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 29, 2017 |
| Expiration date | December 31, 2022 |
| Issuing agency | State |
| Address | Walhalla, SC 29691 |
| Subwatershed | Upper Coneross Creek (HUC 030601010501) |
| NAICS | 212313 – Crushed and Broken Granite Mining and Quarrying |
| SIC | 1423 – Crushed And Broken Granite |
| Other EPA IDs (FRS) | ICIS-AIR source SC00018200021 |
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
- 4Pollutants on file
- 4Under a numeric limit
- 4With 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 | 8 | 0 | ||
| Solids, total suspended | 2 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 8 | 0 | ||
| Oil & Grease | 2 | 4 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES SCG730448.
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 SCG730448.
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 SCG730448 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.