ZOFS proudly served as the prime CM for this ambitious initiative to modernize critical sewer infrastructure. This transformative project was a key component of NYC's environmental efforts to reduce combined sewer overflows (CSOs) and enhance water quality in the Bronx River per NYSDEC Consent Order. The project involved the construction of a new regulator chamber, HP-05, with 5 new tide gates, on an existing double-barrel combined box sewer line, as well as the decommissioning of the existing regulator chamber within the Shorehaven Community. In addition to the new chamber, the scope included relocating underground utilities, such as sewer connections, water mains, and catch basins, to accommodate the updated infrastructure. A complex secant pile and sheet pile support of excavation (SOE) was installed for the new regulator chamber, and the existing regulator remained operational during construction before being converted into a flow-through facility. Above ground, the project included the construction of new hatches and instrumentation access manholes for the regulator chamber, the installation of SCADA controls, and the addition of an on-ground solar array to support sustainable energy practices. Site restoration efforts involved roadway, sidewalks, pavement repairs, landscaping, and the rebuilding of a guard booth and dumpster enclosure to maintain community resources. Traffic control and utility relocation measures minimized disruption, and post-construction efforts restored all affected areas within the gated community. This project also involved significant environmental and safety oversight, with ZOFS providing comprehensive environmental health and safety (EHS), site safety management, and community outreach services, design and constructability review, construction planning, scheduling, cost estimating, administrative support, inspection, project safety oversight, BIM coordination, change management, quality control, stakeholder coordination, submittal management, and project closeout. The project enhanced the flow capacity of the sewer system, reducing annual overflow events at outfall HP-011 and significantly contributing to the reduction of pollution in the Bronx River.