Giving a breakdown of costs, Bomben explained $5 million is for engineering and design, $130M is for water works and the remaining $70M is for “similar vintage and condition sewer lines.” “These must be replaced at the same time as the water mains since the failure of the sewer lines could also impact adjacent infrastructure and potentially cause the water system to fail. It would be far more costly and disruptive to the community to excavate the same road system twice to replace these systems at different times.”