[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Martin Marietta Materials jobs](https://jobs.opennash.com/companies/martin-marietta-materials/) · [Search jobs](/search/) Martin Marietta Materials · Berkeley, California # Plant Operator Berkeley, California Manufacturing & Production Listed on Martin Marietta Materials’s official careers site. Listed as of October 18, 2026. Check that it is still open and apply there. [Apply on Martin Marietta Materials’s careers site →](https://jobs.jobvite.com/martinmarietta/job/oZuTAfwG) [OpenNash Jobs](https://jobs.opennash.com/) / [Martin Marietta Materials](https://jobs.opennash.com/companies/martin-marietta-materials/) / Plant Operator ## Job description ### JOB SUMMARY The Plant Operator is responsible for the safe, efficient, and high-quality production of Hot Mix Asphalt (HMA) and Warm Mix Asphalt (WMA). This role involves operating a computerized plant control system to regulate the flow of raw materials into the mixing process. The Operator is expected to possess advanced troubleshooting skills, perform preventative and corrective maintenance on stationary equipment, and ensure all mixes meet strict Quality Control (QC) and Department of Transportation (DOT) specifications. This individual acts as a key steward of Martin Marietta’s Guardian Angel safety culture, ensuring a zero-injury environment while maximizing production uptime. ### KEY DUTIES AND RESPONSIBILITIES Operate automated plant control systems to monitor and adjust the flow of materials, temperatures, and mixing times. Ensure the precise blending of aggregates and liquid asphalt cement according to specific mix designs provided by Quality Control. Oversee the loading of asphalt into haul trucks, ensuring correct weights, legal load limits, and efficient traffic flow within the yard. Monitor levels of liquid AC (asphalt cement), fuel, and aggregate stockpiles; coordinate with the Loader Operator to ensure the plant remains fed. Perform advanced maintenance on conveyors, baghouses, drum dryers, screens, and elevator systems. This includes replacing bearings, adjusting belts, and repairing liners. Utilize arc welders and cutting torches to perform structural repairs and equipment modifications as needed. Identify and troubleshoot electrical, hydraulic, and mechanical malfunctions to minimize plant downtime during peak production hours. Maintain a clean and orderly facility, including the control house, yard, and equipment areas, to prevent safety hazards and environmental spills. Conduct comprehensive pre-shift and post-shift inspections of the plant and mobile equipment (skid steers, loaders, water trucks) and document findings. Ensure strict compliance with OSHA, and EPA regulations, specifically regarding dust control, emissions, and lockout/tagout (LOTO) procedures. Proactively identify and mitigate workplace hazards; participate in safety meetings - Maintain accurate daily production logs, maintenance records, and fuel/oil usage reports via company software - Assist in the training and development of Laborers, sharing technical knowledge of plant systems. Function as the primary point of contact between the plant, the QC lab, and the dispatch office to ensure customer orders are completed accurately and timely. ### QUALIFICATIONS Education High school diploma, GED, or relevant experience Work Experience - 10 years of experience in Asphalt Plant Operations or a Heavy Industrial Manufacturing environment Knowledge, Skills, and Abilities OSHA compliance and regulations EPA Technical aptitude Mechanical aptitude Asphalt plant knowledge Detail oriented Time management Effective communicator (written and spoken) ADDITIONAL DETAILS Physical Requirements - Must be able to lift and carry up to 50 lbs. for plant maintenance and equipment servicing. Required to bend, stoop, climb, and reach. You must be able to maintain three points of contact when climbing on/off machinery or on ladders. Strong hand-eye-foot coordination is essential for operating hand/foot controls. You must have good depth perception with or without seeing aid for distances up to 150 feet. Working Conditions All duties require outside assignments and require periods of work in all weather conditions, cold, wet, dry and dusty;Must be able to work in areas where noise levels are up to 85 dbs. This is a union-represented position. The current hourly rate for this position is $65.98, as established by the applicable collective bargaining agreement. Additional compensation, premiums, and benefits may apply in accordance with the terms of the collective bargaining agreement ## At a glance - Posted by the employer: Not stated - First seen by OpenNash: Oct 11, 2026 - Last checked: Oct 18, 2026 - Listed for: 7 days - Location: Berkeley, California[Apply on Martin Marietta Materials’s careers site →](https://jobs.jobvite.com/martinmarietta/job/oZuTAfwG) ## More jobs at Martin Marietta Materials ### [Asphalt Plant Loader Operator](https://jobs.opennash.com/companies/martin-marietta-materials/jobs/8362a531783da3fe738b/) Denver, Colorado ### [Asphalt Plant Manager](https://jobs.opennash.com/companies/martin-marietta-materials/jobs/fc4d67a1cd8ffbe6b9e0/) Lakewood, Colorado ### [Asphalt Plant Manintenance](https://jobs.opennash.com/companies/martin-marietta-materials/jobs/5c9e2585775f0b721603/) Denver, Colorado ### [Assistant Plant Manager](https://jobs.opennash.com/companies/martin-marietta-materials/jobs/c90e270e3ed4434c854a/) ### [Associate, Crushing Process Engineer](https://jobs.opennash.com/companies/martin-marietta-materials/jobs/9ee6c318e17124f05e27/) Salisbury, North Carolina ## Similar jobs at other companies ### [Grain Plant Operator](https://jobs.opennash.com/companies/cargill/jobs/baa5cf4bc02808f848f1/) Cargill · Carleton, Nebraska ### [Grain Plant Operator](https://jobs.opennash.com/companies/cargill/jobs/b6f90bfc1cf86796741a/) Cargill · Lacon, Illinois ### [Plant Operator Trainee](https://jobs.opennash.com/companies/veolia-environnement/jobs/00a9cabac7ecbde76973/) Veolia Environnement · Wantagh, NY, United States ### [Webber - Batch Plant Operator - Heavy Civil](https://jobs.opennash.com/companies/ferrovial/jobs/deec66dacbf8c716c14f/) Ferrovial · Lubbock, TX ### [Batch Plant Operator](https://jobs.opennash.com/companies/sterling-construction/jobs/efc6f9be405be7934e3a/) Sterling Construction · Salt Lake City, UT OpenNash lists jobs from employers’ own careers sites and does not handle applications. Dates come from the employer where stated; “first seen” and “last checked” are our own observations. OpenNash Jobs · Official listings with dates and links to the employer. [Weekly hiring report](/reports/hiring/) · [Methodology](/methodology/)