Clean Water Act discharge permit · NPDES SCG731426
JOHN MARION CLAYTON & ROBIN C GIBBS/MRC PIT, Dorchester, SC: NPDES SCG731426 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 3Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
JOHN MARION CLAYTON & ROBIN C GIBBS/MRC PIT, held by AUSTIN CONSTRUCTION CO INC, holds NPDES permit SCG731426. EPA’s file records it issued January 9, 2018 and expiring December 31, 2022. 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 | JOHN MARION CLAYTON & ROBIN C GIBBS/MRC PIT |
|---|---|
| Permittee as filed | AUSTIN CONSTRUCTION CO INC |
| NPDES ID | SCG731426 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 9, 2018 |
| Expiration date | December 31, 2022 |
| Issuing agency | State |
| Address | Dorchester, SC 29437 |
| Subwatershed | Walnut Branch (HUC 030502050308) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 3Pollutants on file
- 3Under a numeric limit
- 3With a violation of any kind
- 1With 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 | 123 | 11 | February 28, 2026 | |
| Flow, in conduit or thru treatment plant | 4 | 134 | 0 | ||
| Solids, total suspended | 4 | 112 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 7, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
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.
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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 SCG731426 there.
Nearby on the register
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- Every permit record in Dorchester, A to Z
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- Every permit record in South Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.