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Aggregate Plant Operator Jobs in California (NOW HIRING)

CalPortland

Aggregate Plant Manager

Santa Maria, CA

$90K - $110K/yr

The Aggregate Plant Manager works closely with front line supervisors and administrative personnel ... Develops plans to work towards improved performance and lower operating costs * Various other ...

CalPortland

Aggregate Plant Manager

Santa Maria, CA

$90K - $110K/yr

The Aggregate Plant Manager works closely with front line supervisors and administrative personnel ... Develops plans to work towards improved performance and lower operating costs * Various other ...

CalPortland

Aggregate Plant Manager

Santa Maria, CA · On-site

$90K - $110K/yr

The Aggregate Plant Manager works closely with front line supervisors and administrative personnel ... Develops plans to work towards improved performance and lower operating costs * Various other ...

Graniterock

Plant Operator

Redwood City, CA · On-site

While operating a 988 sized front-end loader, supply the Batch Plant and Drum Plant with aggregates. Unload railcar shipments safely and timely. Perform and record pre-and post-operation inspections ...

Martin Marietta

Plant Operator

Santa Margarita, CA · On-site

$34 - $39/hr

Ensure the precise blending of aggregates and liquid asphalt cement according to specific mix ... Loader Operator to ensure the plant remains fed. * Perform advanced maintenance on conveyors ...

Martin Marietta

Plant Operator

Santa Margarita, CA

$34 - $39/hr

Ensure the precise blending of aggregates and liquid asphalt cement according to specific mix ... Loader Operator to ensure the plant remains fed. * Perform advanced maintenance on conveyors ...

Teichert

Hot Plant/Crusher Operator

Winton, CA · On-site

$31.65 - $37.98/hr

... daily operation of an aggregate and asphalt facility. Focus & Scope Essential duties and ... Rock plant operator - Includes operating various controls within the rock plant to control the ...

Graniterock

Loader Operator

Redwood City, CA · On-site

$20.50 - $27.25/hr

... Plant with recycled concrete and asphalt rubble. Load customer finished aggregate into customer ... Inspect and manage inbound rubble stream as well as stockpiles. Assist the crushing plant operator ...

Graniterock

Loader Operator

Redwood City, CA · On-site

$20.50 - $27.25/hr

... Plant with recycled concrete and asphalt rubble. Load customer finished aggregate into customer ... Inspect and manage inbound rubble stream as well as stockpiles. Assist the crushing plant operator ...

Structure Cast

Batch Plant Manager

Bakersfield, CA · On-site

$80 - $100/hr

Monitor aggregate moisture content and make real‑time mix adjustments to maintain SCC performance ... Conduct pre‑shift and post‑shift equipment inspections and enforce operator accountability.

Structure Cast

Batch Plant Manager

Bakersfield, CA · On-site

Monitor aggregate moisture content and make real-time mix adjustments to maintain SCC performance ... Conduct pre-shift and post-shift equipment inspections and enforce operator accountability.

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Aggregate Plant Operator information

What is an aggregate plant operator?

An Aggregate Plant Operator is responsible for overseeing the operation of equipment used to process and produce construction materials such as sand, gravel, and crushed stone. They monitor machinery, perform routine maintenance, and ensure the plant runs efficiently and safely. Operators also coordinate with other team members to maintain production schedules and adhere to environmental and safety regulations.

What does an aggregate plant operator do?

A typical day for an Aggregate Plant Operator involves monitoring and adjusting equipment such as crushers, conveyors, and screens to maintain optimal production levels. Operators inspect and maintain machinery, perform routine safety checks, and respond quickly to any malfunctions or quality issues. Collaboration with maintenance teams, quality control staff, and supervisors is common to ensure both operational efficiency and safety compliance. The work is generally hands-on, physically demanding, and may require working outdoors in varying weather conditions. Over time, experience in this role can lead to advancement opportunities such as lead operator or plant supervisor.

What skills and qualifications are needed to be an aggregate plant operator?

To thrive as an Aggregate Plant Operator, you need operational knowledge of heavy machinery, basic mechanical aptitude, and a high school diploma or equivalent. Familiarity with computerized plant control systems, loader and conveyor operation, and relevant safety certifications such as MSHA (Mine Safety and Health Administration) are typically required. Attention to detail, problem-solving skills, and strong teamwork are important soft skills for this position. These competencies ensure the safe, efficient, and continuous production of quality aggregate materials in a collaborative environment.

What are popular job titles related to Aggregate Plant Operator jobs in California?

For Aggregate Plant Operator jobs in California, the most frequently searched job titles are:

What job categories do people searching Aggregate Plant Operator jobs in California look for?

The top searched job categories for Aggregate Plant Operator jobs in California are:

Aggregate Plant Operator jobs near you
Infographic showing various Aggregate Plant Operator job openings in California as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Aggregate Plant Manager

Santa Maria, CA

CalPortland
Construction Materials Wholesalers • 1 - 5K employees

7.5

Company rating: 7.5 out of 10

Based on 28 frontline employees who took The Breakroom Quiz

People enjoy working here

Good employer

Paid breaks

Learn more about CalPortlandexternal

$90K - $110K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Re-posted 2 days ago

Job description

Job Summary

**Please note that this position is located in Santa Maria, CA. Relocation assistance is available. Come work for a company that has been around for over 130 years and continues to grow and play a significant role in the building of America!** 

The Aggregate Plant Manager works closely with front line supervisors and administrative personnel in overseeing the aggregate production plant, mining operations, material load-out, and overall site facilities. This position is responsible for overseeing off-road equipment, maximizing equipment utilization, ensuring customer quality requirements, and responding to emergencies.  This individual will ensure compliance with state and federal safety and environmental regulations and requirements, as well as company policies.

Benefits

At CalPortland, we’re proud to offer a comprehensive, competitive benefits package that provides health and financial support to our most important resources: our employees.  Your benefits are an important part of your overall compensation at CalPortland. That’s why we give you a wide range of benefits to choose from.  All regular full time employees may enroll in a variety of health and welfare plans including medical, dental and vision plans.  Other benefits include life insurance, disability coverage, employee assistance program, and retirement program.  The company also has a variety of voluntary benefits for employees to choose from.

Compensation

$90,000 - $110,000  DOE

Responsibilities
  • Plans and budgets operations
  • Responsible for mine planning, safety, environmental matters, cost control, production and maintenance
  • Works with Aggregates Manager in establishing and monitoring production plan; maintaining accurate cost and inventory control; calculating and analyzing productivity and material date
  • Understands the value of quality and ensures processes are in place to provide a quality product to our customers
  • Maintains duties related to MSHA regulations including accident investigation and reporting, safety meetings, training, etc.; actively engages with the employees to reinforce safe behaviors; ensures that safety, compliance and environmental requirements are followed
  • Oversees mobile equipment repair and maintenance
  • Documents production statistics and produces reports as required
  • Maintains working relationships with all departments to ensure work objectives are met
  • Develops plans to work towards improved performance and lower operating costs
  • Various other responsibilities and operations as determined by the operations manager.
Education

Bachelor’s degree in Mining Engineering, Geology, Civil Engineering, Mechanical Engineering, Industrial Engineering or equivalent industry experience

Requirements/Qualifications
  • Minimum of 5 years’ experience managing an aggregate and/or asphalt Operations, including ancillary functions such as yard production
  • Strong mechanical aptitude
  • Demonstrable experience in all aspects of crushing, screening, washing, and stockpiling to produce high-quality construction aggregates
  • Experience in hard rock drill and blast mining operations
  • Strong analytical, communication, organizational and leadership skills
  • Personnel management experience (i.e., hiring and selection, performance reviews, discipline, & legal compliance requirements)
  • Familiar with systematic engineering thought process and problem solving
  • Proficient in Microsoft Office Suite (i.e. Excel, PowerPoint and Word)
  • Familiarity with applicable federal, state, and local laws, rules, and regulations regarding mining operations including MSHA, OSHA, Cal OSHA, and SMARA

Preferred:

  • Experience in a vertically integrated construction materials organization
  • Experience with SAP Financial System
Conditions of Employment

Successful candidate must submit to post-offer pre-employment physical examination, drug/alcohol screen, and background check. Some positions require FMCSA regulated on-going drug and alcohol testing.

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