Clean Water Act discharge permit · NPDES LA0052256
NATIONAL AEROMAUTICS & SPACE ADMINISTRATION- MICHOUD ASSEMBLY FACILITY, New Orleans, LA: NPDES LA0052256 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
NATIONAL AEROMAUTICS & SPACE ADMINISTRATION- MICHOUD ASSEMBLY FACILITY, held by NASA Michoud Assembly Facility, holds NPDES permit LA0052256. EPA’s file records it issued February 23, 2026 and expiring March 31, 2031. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | NATIONAL AEROMAUTICS & SPACE ADMINISTRATION- MICHOUD ASSEMBLY FACILITY |
|---|---|
| Permittee as filed | NASA Michoud Assembly Facility |
| NPDES ID | LA0052256 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Federal facility |
| Issued | February 23, 2026 |
| Expiration date | March 31, 2031 |
| Issuing agency | LDEQ |
| Address | New Orleans, LA 70129 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Morrison Canal (HUC 080902030201) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 34Pollutants on file
- 16Under a numeric limit
- 32With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Carbon, tot organic [TOC] | 7 | 30 | 4 | March 31, 2023 | 39% over the limit |
| Oxygen demand, chem. [high level] [COD] | 2 | 3 | 3 | December 31, 2019 | 63% over the limit |
| pH | 4 | 9 | 2 | May 31, 2022 | |
| Oil and grease | 0 | 30 | 1 | April 30, 2009 | 7% over the limit |
| Copper, total [as Cu] | 2 | 5 | 1 | May 31, 2014 | 119% over the limit |
| Oxygen demand, chem. [low level] [COD] | 0 | 4 | 1 | October 31, 2006 | 65% over the limit |
| Flow, in conduit or thru treatment plant | 16 | 59 | 0 | ||
| Trichloroethylene | 12 | 29 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 28 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 0 | 26 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 26 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 26 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 26 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Menidia | 0 | 20 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 0 | 20 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 0 | 20 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 0 | 20 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Menidia menidia | 0 | 20 | 0 | ||
| Solids, total suspended | 2 | 4 | 0 | ||
| Cyanide, total [as CN] | 2 | 4 | 0 | ||
| Cadmium, total [as Cd] | 2 | 4 | 0 | ||
| Chromium, total [as Cr] | 2 | 4 | 0 | ||
| Lead, total [as Pb] | 2 | 4 | 0 | ||
| Nickel, total [as Ni] | 2 | 4 | 0 | ||
| Silver, total [as Ag] | 2 | 4 | 0 | ||
| Zinc, total [as Zn] | 2 | 4 | 0 | ||
| 1,2-cis-Dichloroethene | 0 | 3 | 0 | ||
| Phenol | 0 | 3 | 0 | ||
| Vinyl chloride | 0 | 3 | 0 | ||
| Chlorine, total residual | 0 | 3 | 0 | ||
| Organics, total toxic [TTO] | 0 | 3 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 2 | 0 | ||
| Oil & Grease | 7 | 0 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 0 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES LA0052256.
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 LA0052256 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.