Alcoa Massena Operations - West Plant

What they make

Where it is

Other plants nearby

Every listed plant in St. Lawrence County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 7 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, BR, CEDRI, E-GGRT, EIS, FIS, ICIS, NCDB, NPDES, OSHA-OIS, RCRAINFO, TRIS, TSCA · EPA site type STATIONARY.

• EPA ECHO compliance recordsOPERATING
  first seen MAR 2026 · last seen AUG 2026
• EPA Facility Registry ServiceEXISTENCE
  Record 110000582735 · first seen APR 2026 · last seen APR 2026

IN ST. LAWRENCE COUNTY4 other plants share this one’s industry (Alumina and Aluminum Production and Processing, NAICS 3313); 2 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: ALCOA MASSENA OPERATIONS - WEST PLANT · NOV 2026

Street address

EPA: 45 CO RTE 42 · NOV 2026

City

EPA: MASSENA · NOV 2026

State

EPA: NY · NOV 2026

County (FIPS code)

EPA: 36089 · NOV 2026

Coordinates

EPA: 44.950425,-74.893685 · NOV 2026

Hazardous waste generator (RCRA)

EPA ECHO: LQG · NOV 2026