Aggregate Foreman

  • COLAS
  • Irwindale, California
  • Full Time

United Rock Products 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. Mining of construction aggregates at United Rock Products in the San Gabriel Valley has taken place since 1916. Our top-rated 300-acre site is located in Irwindale, California, just 25 miles east of Los Angeles. Virgin aggregate material is processed into sand and gravel through cutting-edge crushing and screening operations. To learn more about United Rock Products visit www.unitedrock.com.

The Colas USA Family of Companies provides competitive pay, outstanding benefits, career advancement opportunities, professional education, and extensive training for every employee. We pride ourselves on upholding the highest standards of safety, environmental conservation, and ethical conduct as we strive to grow our infrastructure products and services through empowering and developing our people, fostering innovation, utilizing new technology, and maximizing vertical integration at all levels of the company's value chain. To learn more about the Colas USA Family of Companies, please visit www.colasusa.com.

Job Summary

Supervises and coordinates activities of workers engaged in excavating and grading right-of-way for construction of projects, such as highways, streets, drainage ditches, and dams.

Main Responsibilities

  • Measures distances from reference points to locate boundaries of construction site
  • Directs work crews engaging in operating vehicles and machines to dump, scrape, and spread dirt
  • Verifies curvature of graded surface, using hand level
  • Performs other duties as described under Supervisor
  • May supervise bituminous paving or concrete crews
  • May supervise work crew engaged in operating machines to tamp, roll, and smooth surface for subgrade of highway
  • May supervise workers engaged in laying drainage tile, concrete, and metal culverts
  • May be designated according to activity of workers
  • Performs other duties as assigned.

Skills

Worker must be able to:

  • Apply and interpret principles of rational systems (bookkeeping, engines, electronics, building)
  • Solve particle problems
  • Deal with a variety of concrete variables in situations where only limited standardization exists
  • Be competent in beginning algebra and geometry
  • Skilled in computation of discount, interest, profit, loss, commission, markup, selling price, ratio, proportion, percentage, surfaces, volumes, weights, and measures
  • Read safety rules, instructions in the use and maintenance of shop tools and equipment, and methods and procedures in mechanical drawing and layout work

Physical Requirements

Worker must be able to:

  • Exert up to 20 pounds of force occasionally, or up to 10 pounds of force frequently, or a negligible amount of force constantly to move objects
  • Walk and stand for a significant amount of time
  • Have pushing and pulling on arm or leg control for a significant amount of time
  • Work at a productive rate

Colas Inc. and its subsidiaries are an Equal Opportunity Employer. For details on the specifics of this commitment, please click here to view the EEO document. If you are an individual with a disability and require a reasonable accommodation to:

  • to meet the requirements of the role in which you are applying
  • complete any part of the application process
  • access or use the online application process and need an alternative method for applying

Please contact Colas Inc. at ... or send an email to ....

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Nearest Major Market: Los Angeles

Job ID: 481348797
Originally Posted on: 6/15/2025

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