Superior Duct Fabrication

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
PPPrecision Powdered Metal Parts	Pomona	Rolled Steel Shape Manufacturing 331221	◐ LIKELY ACTIVE	2.4 KM
TITrussworks International INC	Pomona	Fabricated Structural Metal Manufacturing 332312	● ACTIVE	4.6 KM
Skyline Steel LLC. - Geo Pomona	Pomona	Iron and Steel Pipe and Tube Manufacturing from Purchased Steel 331210	◐ LIKELY ACTIVE	4.5 KM
UMUniversal Mercantile Exchange, INC.	Walnut	Special Die and Tool, Die Set, Jig, and Fixture Manufacturing 333514	● ACTIVE	7.9 KM
Cardinal Amber LLC	Upland	Institutional Furniture Manufacturing 337127	● ACTIVE	12.1 KM

Every listed plant in Los Angeles County

Also at this address

No other federal record shares this street address.

Where this record comes from

5 sources hold this plant, and 12 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 CA-ENVIROVIEW, NPDES, OSHA-OIS, RCRAINFO · EPA site type STATIONARY.

• DOL Form 5500 retirement plan filingsOPERATING
  Record 270027867|CA|91768|1683 mount vernon ave · first seen OCT 2025 · last seen OCT 2025
• SBA 7(a) and 504 loan recordsEXISTENCE
  first seen SEP 2023 · last seen SEP 2023
• SBA Paycheck Protection Program loan recordsEXISTENCE
  Record CA|pomona|1683 mount vernon ave · first seen APR 2020 · last seen APR 2020
• EPA Facility Registry ServiceEXISTENCE
  Record 110066079683 · first seen OCT 2018 · last seen OCT 2018
• EPA ECHO compliance recordsOPERATING
  first seen SEP 2018 · last seen SEP 2018

IN LOS ANGELES COUNTY61 other plants share this one’s industry (Steel Product Manufacturing from Purchased Steel, NAICS 3312); 14 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: SUPERIOR DUCT FABRICATION · OCT 2026

Street address

EPA: 1683 MOUNT VERNON AVE · OCT 2026

City

EPA: POMONA · OCT 2026

State

EPA: CA · OCT 2026

County (FIPS code)

EPA: 06037 · OCT 2026

Coordinates

EPA: 34.06047,-117.77472 · OCT 2026

Employees (band)

DOL: 100-499 · OCT 2025

Retirement plan filing (Form 5500)

DOL: 104 active participants, plan year ending 2025-10-31, 3 plan(s) · OCT 2025

PPP loan

SBA PPP: PPP loan x1, approved 2020-04-06, 232 jobs reported · APR 2020

Hazardous waste generator (RCRA)

EPA ECHO: none · OCT 2026

SBA loans

SBA: 504 loan x1, jobs 15.0 · SEP 2023

State business registration

TX Comptroller: SUPERIOR AIR FABRICATION LLC, registered with the Texas Comptroller of Public Accounts; Corporation; active