Hawaii Sewer, Sewage Disposal, Drain and Pipe Laying

To construct concrete and masonry sewers, packaged sewer disposal plants, sewage lift stations, septic tanks, and appurtenances thereto and to lay steel, cast iron, concrete, vitreous and nonvitreous, plastic, and any other type of piping for storm drains, water, and gas lines, irrigation and sewers, manholes in connection with above work, and repairing and recondition of the pipelines, including the excavation, grading, trenching, backfilling, paving, and surfacing in connection therewith.