Underground Flow Equalization System

approved

The City of San Mateo is implementing a series of capital projects, referred to collectively as the Clean Water Program (CWP), to replace aging wastewater infrastructure, build wet weather capacity, comply with regulatory requirements, and align with the City’s sustainability goals. The Underground Flow Equalization System (UFES) project, consistent with the Council’s selected program alternative, will provide the wastewater system capacity to comply with regulations requiring prevention of sanitary system overflows. This project consists of a concrete holding structure, pump station, diversion sewers and force main, and on odor control equipment room. These facilities would be located underground. Access hatches, an emergency backup generator, and an electrical building and vents for treated air would be located at ground level. The proposed project will provide for short-term storage of wastewater to prevent sanitary sewer overflows during wet weather.