SFOBB Treatment BMP Feasibility Study

A technical and fiscal feasibility study examines the collection and treatment of stormwater runoff from the new San Francisco-Oakland Bay Bridge (SFOBB). The study concludes that: 1) construction of a 450-mm (18-inch) storm drain within the east span would be technically feasible along approximately 65% of the bridge length; 2) construction of a detention basin BMP on the Oakland touchdown would be technically feasible; and 3) although technically feasible, construction of such a collection system and treatment BMP would be fiscally infeasible, based on the maximum extent practicable (MEP) standard of costs versus benefits. Despite that a treatment BMP would be infeasible, the design of new bridge would provide inherent water quality benefits. Stormwater runoff from the new bridge is expected to be of better quality than the runoff from the existing bridge.