Tsrc Specialty Materials LLC - Research & Development Pilot Plant

21255 Hwy 1 Bldg 2501, Plaquemine, LA 70764

LIKELY ACTIVELAST SEEN IN FEDERAL DATA AUG 2026 · 3 SOURCES

Operating signal within 24 months, or from a single source.

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What they make

All Other Basic Organic Chemical Manufacturing325199

Where it is

30.31701, -91.24378 · CENSUS TIGER

COUNTY

Iberville County

METRO AREA

Baton Rouge, LA

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Other plants nearby

Facility	City	Industry	Status	Distance
Nutrition & Biosciences USA 1 LLC - Plaquemine Methocel	Plaquemine	All Other Basic Organic Chemical Manufacturing 325199	LIKELY ACTIVE	0.3 KM
Ineos Oxide - a Division of Ineos Americas LLC	Plaquemine	All Other Basic Organic Chemical Manufacturing 325199	LIKELY ACTIVE	0.4 KM
Plaquemine Hydrogen Purification	Addis	Industrial Gas Manufacturing 325120	LIKELY ACTIVE	1.2 KM
The Dow Chemical CO - Louisiana Operations	Plaquemine	Petrochemical Manufacturing 325110	LIKELY ACTIVE	1.8 KM
Tokai Carbon Cb LTD - Addis Facility	Addis	Other Basic Inorganic Chemical Manufacturing 325180	ACTIVE	3.6 KM

Every listed plant in Iberville County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 sources hold this plant, and 6 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in AIR, AIRS/AFS, CEDRI, EIS, NPDES, RCRAINFO, TRIS, TSCA · EPA site type STATIONARY.

EPA ECHO compliance recordsOPERATING
first seen JUL 2026 · last seen AUG 2026
EPA Toxics Release InventoryOPERATING
first seen DEC 2023 · last seen DEC 2024
EPA Facility Registry ServiceEXISTENCE
Record 110046122735 · first seen JUL 2020 · last seen JUL 2020

IN IBERVILLE COUNTY29 other plants share this one’s industry (Basic Chemical Manufacturing, NAICS 3251); 10 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name: EPA: TSRC SPECIALTY MATERIALS LLC - RESEARCH & DEVELOPMENT PILOT PLANT · NOV 2026
Street address: EPA: 21255 HWY 1 BLDG 2501 · NOV 2026
City: EPA: PLAQUEMINE · NOV 2026
State: EPA: LA · NOV 2026
Coordinates: EPA: 30.317014,-91.243777 · NOV 2026
Hazardous waste generator (RCRA): EPA ECHO: LQG · NOV 2026

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