ENTERGY MISSISSIPPI INC, GRAND GULF NUCLEAR STATION
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- Address
-
GRAND GULF ROAD
PORT GIBSON, MS 39150
View on map ↗ - County
- CLAIBORNE County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221113
- Inspections
- 4 · last Jan 7, 2026
- Total Penalties
- $0
- Registry ID
- 110007109547
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
Qtrs Non-Compliant
Qtrs Non-Compliant
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| caa | FRV | Feb 20, 2025 | — | Open |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Aug 19, 2013 | Oct 2, 2013 | Resolved |
| rcra | Standards for Used Oil: Generators | Aug 19, 2013 | Oct 2, 2013 | Resolved |
| rcra | Land Disposal Restrictions: General | Apr 11, 1991 | Apr 25, 1991 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Mar 29, 1989 | May 26, 1989 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | May 25, 1988 | Aug 22, 1988 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | May 6, 1987 | Jun 26, 1987 | Resolved |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Chlorine, free available | DMR, Limited - Numeric Violation | 1.29 mg/L | 0.50 | +158% | Sep 2018 | Open |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.07 | +78% | Mar 2015 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.