Ключевые слова: aerial view, backhoe, builder, cement rings, concrete well, concrete well ring, construction, construction site, culverts, dig, digger, drainage, drainage pipe, drainage system, earth work, earthwork, excavate, excavation, excavator, ground, groundwork, laying, loader, pipe, pipes, plumbing, reinforced construction, repair, replacement, sanitary sewer, scoop, sewage, sewer construction, sewer pipes, sewer wells, sewerage, storm, storm drain, storm sewers, top view, treatment, trench, utility infrastructure, wastewater, water, water main, work, worker,