Qsc LLC

• Layoff notice effective MAY 22, 2020 · 55 employees · filed SEP 11, 2020 · Layoff Type Unknown — recorded; a layoff does not change the status
• Layoff notice effective APR 10, 2020 · 55 employees · filed APR 16, 2020 · Layoff Temporary — recorded; a layoff does not change the 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

Facility	City	Industry	Status	Distance
Undersea Systems International, INC.	Santa Ana	Other Communications Equipment Manufacturing 334290	● ACTIVE	2.6 KM
Ipintegration, INC.	Costa Mesa	Electronic Computer Manufacturing 334111	● ACTIVE	2.5 KM
FSFm Systems, INC.	Fountain Valley	Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 334220	▲ REPORTED CLOSED	2.7 KM
Bluetek Network Solutions INC	Fountain Valley	Audio and Video Equipment Manufacturing 334310	● ACTIVE	3.6 KM
ADAdaptive Digital Systems INC	Newport Beach	Audio and Video Equipment Manufacturing 334310	◐ LIKELY ACTIVE	6.6 KM

Every listed plant in Orange County

Also at this address

2 other records share this street address. Separate filings can describe distinct businesses on one site, or the same plant recorded by different agencies, so every record is kept rather than merged away.

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 NPDES, OSHA-OIS, RCRAINFO · EPA site type STATIONARY.

• EPA ECHO compliance recordsOPERATING
  first seen OCT 2021 · last seen OCT 2021
• State WARN plant-closing and layoff noticesEXISTENCE
  first seen MAY 2020 · last seen MAY 2020
• EPA Facility Registry ServiceEXISTENCE
  Record 110070097347 · first seen MAY 2019 · last seen MAY 2019

IN ORANGE COUNTY25 other plants share this one’s industry (Audio and Video Equipment Manufacturing, NAICS 3343); 7 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: QSC LLC · OCT 2026

Street address

EPA: 1675 MACARTHUR BLVD · OCT 2026

City

EPA: COSTA MESA · OCT 2026

State

EPA: CA · OCT 2026

County (FIPS code)

EPA: 06059 · OCT 2026

Coordinates

EPA: 33.701915,-117.927927 · OCT 2026

Hazardous waste generator (RCRA)

EPA ECHO: SQG · OCT 2026