Safely lift, push, pull, and carry heavy objects; walk and stand for long periods of time; work in a generally loud environment; and perform strenuous physical labor under adverse field and weather conditions, including extreme cold, heat, and humidity, and exposure to the sun and dust . Prepare and maintain a safe and clean job site, including, but not limited to, installing earth retention systems, segmental pavement systems, digging trenches, grading aggregate, cleaning up rubble and debris, removing waste materials, and assisting with daily equipment maintenance.