AGGREGATE TECHNICIAN (AMRG, LLC.)

Ecology Auto Parts, Inc.•Desert Center, CA

2d•Onsite

About The Position

Aggregate Mineral Resource Group, LLC. is seeking a knowledgeable and detail-oriented Aggregate Technician to support aggregate production, sampling, testing, and quality control operations across active quarry and material processing facilities. This position is responsible for conducting aggregate sampling and laboratory testing procedures, ensuring material compliance with Caltrans specifications, maintaining accurate testing documentation, and supporting operational quality assurance initiatives. The Aggregate Technician will work closely with quarry operations personnel, plant operators, quality control teams, and management to ensure aggregate materials consistently meet required specifications for construction, infrastructure, and roadway applications. This role requires strong technical knowledge of aggregate testing procedures, attention to detail, and the ability to work effectively within active industrial and quarry environments. The ideal candidate will possess current Caltrans certifications, aggregate testing experience, and a strong understanding of construction materials, laboratory procedures, and field sampling operations.

Requirements

Current Caltrans aggregate testing certifications 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 for 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
Valid driver’s license and reliable transportation required

Nice To Haves

Minimum 2–5 years of experience in aggregate testing, quality control, construction materials, or quarry operations preferred
Familiarity with crushing plants, screening systems, quarry operations, and material processing environments preferred
Proficiency with Microsoft Office and basic reporting systems preferred

Responsibilities

Perform aggregate sampling, testing, and quality control procedures in accordance with Caltrans and industry standards
Conduct laboratory and field testing of aggregate materials including gradation, moisture content, density, sand equivalent, and other required material tests
Collect and document representative material samples from quarry, crushing, screening, and stockpile operations
Maintain accurate testing records, quality assurance documentation, and compliance reporting
Ensure aggregate products meet Caltrans specifications, project requirements, and customer quality standards
Collaborate with operations personnel and plant operators to identify and address material quality issues
Monitor material 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 as required
Coordinate with external inspectors, contractors, vendors, and regulatory personnel during material evaluations and site visits
Support operational improvement initiatives related to aggregate quality, production consistency, and material performance
Follow all 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