Clean Water Act discharge permit · NPDES MSP091187
MISSISSIPPI MARINE CORPORATION, Greenville, MS: NPDES MSP091187 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MISSISSIPPI MARINE CORPORATION, held by MISSISSIPPI MARINE CORP, MAIN, CENTRAL & SOUTH YARDS, holds NPDES permit MSP091187, which discharges to Ms0020184 - Greenville Potw. EPA’s file records it issued April 24, 2018 and expiring March 31, 2023. 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 | MISSISSIPPI MARINE CORPORATION |
|---|---|
| Permittee as filed | MISSISSIPPI MARINE CORP, MAIN, CENTRAL & SOUTH YARDS |
| NPDES ID | MSP091187 |
| Permit status | Effective |
| Permit type | Individual industrial user permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 24, 2018 |
| Expiration date | March 31, 2023 |
| Issuing agency | MDEQ |
| Address | Greenville, MS 38701 |
| Receiving water | MS0020184 - GREENVILLE POTW |
| NAICS | 488390 – Other Support Activities for Water Transportation |
| SIC | 4491 – Marine Cargo Handling |
| Other EPA IDs (FRS) | RCRA handler MSD067696161; ICIS-AIR source MS0000002815100120 |
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
- 15Pollutants on file
- 14Under a numeric limit
- 15With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 4 | 25 | 0 | ||
| Suspended solids, total annual | 4 | 24 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 20 | 0 | ||
| Nickel, total recoverable | 3 | 18 | 0 | ||
| Zinc, total recoverable | 3 | 18 | 0 | ||
| Copper, total recoverable | 3 | 18 | 0 | ||
| Chromium, total recoverable | 3 | 17 | 0 | ||
| Oil & Grease | 4 | 16 | 0 | ||
| Lead, total recoverable | 3 | 15 | 0 | ||
| Cadmium, total recoverable | 3 | 12 | 0 | ||
| Oil & grease, non-polar material | 3 | 12 | 0 | ||
| Mercury, total recoverable | 3 | 12 | 0 | ||
| pH | 2 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 12 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 4 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MSP091187.
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 MSP091187.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MSP091187.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 MSP091187 there.
Nearby on the register
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- Every permit record in Mississippi, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.