Regularly supervises Environmental Technicians and Specialists, including responsibility for hiring, training, mentoring, developing, scheduling, directing, managing performance and other related issues; review the work of, and is accountable for the performance of Environmental Technicians and Specialists. PRINCIPAL RESPONSIBILITIES: Manages construction projects for Landfill cells and sites, including capacity calculations, scheduling/timeline, management of third-party CQA and contractors, and resource and material coordination.