Tamco

• Plant closing notice effective FEB 26, 2021 · 22 employees · filed JAN 5, 2021 · Closure Permanent — a federal source has recorded the plant since, so this notice does not set its status
• Plant closing notice effective DEC 30, 2020 · 66 employees · filed NOV 2, 2020 · Closure Permanent — a federal source has recorded the plant since, so this notice does not set its status
• Layoff notice effective APR 20, 2020 · 68 employees · filed APR 29, 2020 · Layoff Temporary — recorded; a layoff does not change the status
• Plant closing notice effective JAN 29, 2020 · 45 employees · filed NOV 20, 2020 · Closure Permanent — a federal source has recorded the plant since, so this notice does not set its status
• Plant closing notice effective NOV 1, 2019 · 114 employees · filed NOV 4, 2019 · Closure Permanent — a federal source has recorded the plant since, so this notice does not set its status

Notices filed with the state under the federal WARN Act, as the state publishes them, collected by the WARN Act notices feed (CC BY 4.0). A notice records what the employer told the state; it is not by itself proof that the plant closed.

What they make

Where it is

Other plants nearby

Every listed plant in San Bernardino County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 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, CA-ENVIROVIEW, E-GGRT, HWTS-DATAMART, ICIS, RCRAINFO, TRIS, TSCA · EPA site type STATIONARY.

• EPA Facility Registry ServiceEXISTENCE
  Record 110000477788 · first seen JUN 2017 · last seen AUG 2024
• EPA ECHO compliance recordsOPERATING
  first seen FEB 2023 · last seen FEB 2023
• State WARN plant-closing and layoff noticesEXISTENCE
  first seen FEB 2021 · last seen FEB 2021

IN SAN BERNARDINO COUNTY19 other plants share this one’s industry (Iron and Steel Mills and Ferroalloy Manufacturing, NAICS 3311); 4 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: TAMCO · OCT 2026

Street address

EPA: 12459 ARROW HIGHWAY · OCT 2026

City

EPA: RANCHO CUCAMONGA · OCT 2026

State

EPA: CA · OCT 2026

County (FIPS code)

EPA: 06071 · OCT 2026

Coordinates

EPA: 34.099028,-117.53285 · OCT 2026

Hazardous waste generator (RCRA)

EPA ECHO: LQG · OCT 2026