FRS Facility Detail Report


THOMA-SEA MARINE CONSTRUCTORS LLC - LOCKPORT YARD

EPA Registry Id: 110012383438
6130 HIGHWAY 308
LOCKPORT, LA 70374


The facility locations displayed
come from the FRS Spatial
Coordinates tables. They are the
best representative locations for
the displayed facilities based on
the accuracy of the collection
method and quality assurance
checks performed against each
location. The North American
Datum of 1983 is used to display
all coordinates.

Environmental Interests

Information System System Facility Name Information System Id/Report Link Environmental Interest Type Data Source Last Updated Date Supplemental Environmental Interests:
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
THOMA-SEA MARINE CONSTRUCTORS LLC LAG480490 ICIS-NPDES NON-MAJOR ICIS
ICIS-
ENFORCEMENT/COMPLIANCE ACTIVITY
TOXICS RELEASE INVENTORY SYSTEM
HALTER MARINE INC 70374LCKPRHWY30 TRI REPORTER TRIS

OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION INFORMATION SYSTEM
THOMA-SEA MARINE CONSTRUCTORS, L.L.C. 339755613 OSHA ESTABLISHMENT OSHA-OIS 09/12/2018
ICIS-AIR (AIR)
THOMA-SEA MARINE CONSTRUCTORS LLC - LOCKPORT YARD LA0000002205700062 AIR SYNTHETIC MINOR ICIS 10/09/2017
BIENNIAL REPORTERS
THOMA-SEA MARINE CONSTRUCTORS, LLC LAD057113599 HAZARDOUS WASTE BIENNIAL REPORTER RCRAINFO 12/31/2021
EMISSION INVENTORY SYSTEM (EIS)
THOMA-SEA MARINE CONSTRUCTORS LLC - LOCKPORT YARD 5539911 HAZARDOUS AIR POLLUTANT MAJOR EIS 03/23/2023
AIR FACILITY SYSTEM
THOMA-SEA MARINE CONSTRUCTORS LLC - LOCK 2205700062 AIR MAJOR (OPERATING) AIRS/AFS 05/10/2014
LOUISIANA - TOOLS FOR ENVIRONMENTAL MANAGEMENT AND PROTECTION ORGANIZATIONS
THOMA-SEA SHIP BUILDERS LLC - LOCKPORT YARD 2449 STATE MASTER LA-TEMPO

RESOURCE CONSERVATION AND RECOVERY ACT INFORMATION SYSTEM
THOMA-SEA MARINE CONSTRUCTORS, LLC LAD057113599 LQG (Y) RCRAINFO

Additional EPA Reports:  

MyEnvironment  Enforcement and Compliance  Facility Coordinates Viewer  Watershed Report

Standard Industrial Classification Codes (SIC)

Data Source SIC Code Description Primary
AIR
3731
SHIP BUILDING AND REPAIRING

AIRS/AFS
3732
BOAT BUILDING AND REPAIRING

AIR
3732
BOAT BUILDING AND REPAIRING

TRIS
3731
SHIP BUILDING AND REPAIRING

NPDES
3799
TRANSPORTATION EQUIPMENT, NOT ELSEWHERE CLASSIFIED

Facility Codes and Flags

EPA Region: 06
Duns Number: 000000000, 007324254
Congressional District Number: 01
Legislative District Number: SE
HUC Code/Watershed: 08090301 / EAST CENTRAL LOUISIANA COASTAL
US Mexico Border Indicator:
Federal Facility: NO
Tribal Land: NO

Alternative Names

Alternative Name Source of Data
VT HALTER MARINE INCORPORATED LOCKPORT OPERATIONS MANUAL ENTRY
THOMA-SEA MARINE CONSTRUCTORS LLC - LOCK AIRS/AFS
HALTER LOCKPORT HAZARDOUS WASTE REPORT
HALTER MARINE CO AIRS/AFS
HALTER MARINE LOCKPORT #84 RCRAINFO
THOMA-SEA SHIP BUILDERS FRS
P J LOUPE AIR
HALTER MARINE, PLANT #84 FRS
HALTER MARINE GRP INC PCS
THOMA-SEA SHIP BUILDERS LLC - LOCKPORT YARD LA-TEMPO
THOMA-SEA MARINE CONSTRUCTORS LLC RCRAINFO
BURLINGTON - GI 24/25 TB AIR VOLUNTARY SUBMISSION
HALTER MARINE - LOCKPORT NPDES PERMIT

Organizations

Affiliation Type Name DUNS Number Information System Mailing Address
MAILING ADDRESS
THOMA-SEA SHIP BUILDERS, LLC
NPDES
View
OWNER
THOMA-SEA MARINE CONSTRUCTORS, LLC
RCRAINFO


OPERATOR
THOMA-SEA MARINE CONSTRUCTORS, LLC
RCRAINFO


PARENT COMPANY
TRINITY INDUSTRIES INC. 007324254
TRIS


National Industry Classification System Codes (NAICS)

Data Source NAICS Code Description Primary
RCRAINFO 336611 SHIP BUILDING AND REPAIRING.
OSHA-OIS 336611 SHIP BUILDING AND REPAIRING.
TRIS 336611 SHIP BUILDING AND REPAIRING.
AIR 336611 SHIP BUILDING AND REPAIRING.
AIRS/AFS 336611 SHIP BUILDING AND REPAIRING.
EIS 336611 SHIP BUILDING AND REPAIRING.

Facility Mailing Addresses

Affiliation Type Delivery Point City Name State Postal Code Information System
FACILITY MAILING ADDRESS PO BOX 278 LAFOURCHE LA 70374 AIRS/AFS
FACILITY MAILING ADDRESS 6130 HWY 308 LOCKPORT LA 70374 RCRAINFO
REGULATORY CONTACT 6130 HWY 308 LOCKPORT LA 70374 RCRAINFO
MAILING ADDRESS LOCKPORT YARD BOURG LA 70343 NPDES
MAILING ADDRESS P.O. BOX 278 LOCKPORT LA 70374 TRIS
FACILITY MAILING ADDRESS PO BOX 278 LAFOURCHE LA 70374 AIR

Contacts

No Contacts returned.

Query executed on: OCT-14-2025


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