Population Served by Project: 356,823
Project Type: Wastewater
The Enhanced Treatment and Site Upgrade Phase 1 Projects will consist of a combination of projects to be constructed in three phases: 1) aeration basin modifications and the replacement of existing buildings; 2) secondary clarifier construction and new chlorine disinfection and effluent pumping facilities; and 3) existing secondary clarifier retrofitting. The purpose of these projects is to address aging infrastructure, upgrade nutrient removal to address water quality in the San Francisco Bay, and improve infrastructure resiliency to manage wet weather.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- Union Sanitary District (PDF)(1 pg, 265 K)