Aggregate Technician (AMRG)

Ecology Auto Parts•Desert Center, CA

5d•Onsite

About The Position

Aggregate Mineral Resource Group, LLC. is seeking a knowledgeable, detail-oriented Aggregate Technician to support aggregate production, sampling, testing, and quality control across active quarry and material processing facilities. The position conducts aggregate sampling and laboratory testing, verifies compliance with Caltrans specifications, maintains testing documentation, and supports operational quality assurance. The technician works with quarry operations personnel, plant operators, quality control teams, contractors, and management to ensure materials meet specifications for construction, infrastructure, and roadway applications. The role requires technical knowledge of aggregate testing, attention to detail, and the ability to work effectively in active industrial and quarry environments. The position is based in Desert Center, California, and reports to the Mine Operations Manager. Office hours are listed as 0700–1900, Monday through Friday. Work takes place at active aggregate production facilities, quarry operations, and laboratory environments, with duties split between field sampling and laboratory testing. Schedules may vary according to production demands, testing requirements, and operational priorities; travel between operational sites may be required. The role is classified as full-time and non-exempt. Compensation is $25.00–$38.00 per hour, depending on experience, certifications, technical expertise, and industry background. The company offers medical, dental, and vision insurance, a 401(k) plan with employer matching, paid time off, and additional company-sponsored benefits. The job description states that it is not exhaustive and may not contain a comprehensive list of duties and responsibilities.

Requirements

Current Caltrans aggregate testing certifications are required.
A valid driver’s license and reliable transportation are required.
Strong understanding of aggregate production processes, material specifications, and testing procedures.
Knowledge of Caltrans standards, laboratory testing protocols, and quality assurance requirements.
Experience performing laboratory and field testing of aggregate and construction materials.
Strong attention to detail and ability to maintain accurate documentation and testing records.
Ability to analyze material data and communicate findings effectively to operations personnel and leadership.
Strong organizational, communication, and problem-solving skills.
Ability to work independently and manage multiple testing priorities in a fast-paced environment.
Ability to lift and/or move up to 50 pounds regularly.
Ability to work safely around heavy equipment, conveyors, crushers, and active production areas.

Nice To Haves

Two to five years of experience in aggregate testing, quality control, construction materials, or quarry operations is preferred.
Familiarity with crushing plants, screening systems, quarry operations, and material processing environments is preferred.
Proficiency with Microsoft Office and basic reporting systems is preferred.

Responsibilities

Perform aggregate sampling, testing, and quality control in accordance with Caltrans and industry standards.
Conduct laboratory and field testing of aggregate materials, including gradation, moisture content, density, and sand equivalent testing.
Collect and document representative samples from quarry, crushing, screening, and stockpile operations.
Maintain accurate testing records, quality assurance documentation, and compliance reports.
Ensure products meet Caltrans specifications, project requirements, and customer quality standards.
Work with operations personnel and plant operators to identify and address material quality issues.
Monitor production trends and communicate quality concerns to operations leadership.
Maintain testing equipment, laboratory instruments, and sampling tools in proper working condition.
Assist with internal audits, quality inspections, and compliance reviews.
Coordinate with external inspectors, contractors, vendors, and regulatory personnel during material evaluations and site visits.
Support improvements related to aggregate quality, production consistency, and material performance.
Follow company safety procedures, MSHA regulations, and environmental compliance standards.
Assist with inventory management of laboratory supplies, testing materials, and operational consumables.
Participate in safety meetings, operational training, and ongoing quality assurance initiatives.
Travel between operational sites as necessary to support testing and inspection activities.