QC Technician 1

Colas
📍 Irwindale, California, United States 💼 Full-time 🕒 Posted June 19, 2026

Job Description

Blue Diamond Materials is one of the companies that operates within Sully-Miller Contracting Co., the Colas USA subsidiary that operates throughout Southern California. We are part of Sully-Miller Companies consisting of Sully-Miller Contracting Co., Blue Diamond Materials and United Rock Products. Each company supports the other. United Rock provides the aggregate, Blue Diamond Materials provides the hot and warm mix asphalt manufacturing, and Sully-Miller Contracting executes the projects. Blue Diamond has five asphalt plants located throughout Southern California- Irwindale, Inglewood, South Gate, Sun Valley and Victorville. To learn more about Blue Diamond visit www.bluediamondasphalt.com.  


Ready to Apply?

Submit your application today and join our talented team at Colas.

Submit Application

Job Details

  • Location Irwindale, California
  • Job Type Full-time
  • Category Other Production Occupations
  • Posted Date June 19, 2026
  • Application Deadline July 29, 2026