This project for Cape Fear Public Utility Authority involved replacing sewer air release valves on some of the largest force mains in and around downtown Wilmington. Under this contract, we replaced a total of 18 ARVs on force mains ranging in size from 8” to 24”. The majority of the replacements were on 20” & 24” PCCP and involved installation of new 6’ dia. manholes to house the new valve assemblies. Night work and the use of several line stops were necessary in order to isolate our work areas and facilitate ARV installation without interrupting sewer service. Most of the work was done on or near high volume City of Wilmington and NCDOT roadways which required extensive traffic control measures in addition to coordination with local agencies, include the NC Port Authority.