ZOFS served as the prime CM for this critical initiative to enhance sewer capacity, reduce pollution in the Bronx River per NYSDEC Consent Order. ZOFS provided a comprehensive range of services, including design/constructability review, construction planning, cost estimating, construction management, resident engineering, inspection, environmental health and safety (EHS) engineering, site safety management, and community outreach. The project involved constructing a relief sewer from Regulator 13 upstream of CSO outfall HP-009 to the Bronx River Siphon in Soundview Park. The sewer was constructed via microtunneling using a two-pass system to improve sewer functionality and connect with existing interceptors. Three new connecting structures were built, and upgrades to Regulator HP-13 included raising the weir by one foot to improve wet weather flow capture and reduce annual overflow volumes. The SCADA system for Regulator HP-13 and the HP-009 tunnel was replaced and upgraded, with new components powered by solar panels, while the existing system was decommissioned. Structural work included supports of excavation, three sewer structures, and regulator modifications. Civil work involved shaft excavation, site clearing, tree removals, regrading, utility maintenance, and site restoration. Electrical work encompassed new instrumentation, SCADA enclosure, conduit routing, and wiring. A non-linked crossover structure was built at the Outfall HP-010 intersection to optimize hydraulic performance. Modifications ensured dry weather flows were conveyed through existing interceptors, preserving relief sewer capacity for wet weather. Efforts to minimize community impact included maintaining pedestrian access to Soundview Park and facilitating NYC Sanitation composting operations. Post-construction, ZOFS restored the park to its original condition, preserving its role as a vital community resource. As part of the Bronx River Long-Term Control Plan, the HP-009 project reduced annual overflow events at outfall HP-011 from 41 to 39, contributing to a 261 MGY reduction into the Bronx River. With a 41.8% reduction in overflow volumes from baseline conditions, the project improved water quality, aligned with sustainability goals, and strengthened the city's sewer infrastructure resilience.