On September 9, 2009, the San Francisco Bay Regional Water Quality Control Board adopted Resolution No. R2-2009-0064, amending the Water Quality Control Plan for the San Francisco Bay Region. This amendment establishes a total maximum daily load (TMDL) for sediment in the Napa River, and an implementation plan to achieve the TMDL and related habitat enhancement goals.
To implement required control measures, the San Francisco Bay Water Board will rely on Waste Discharge Requirements, Waivers of Waste Discharge Requirements, Clean Water Act Section 401 permits, and existing National Pollutant Discharge Elimination System (NPDES) permits for urban stormwater runoff and/or wastewater discharges. Approximately every five years, the San Francisco Bay Water Board plans to evaluate monitoring results and assess progress made towards attaining targets and load allocations. The San Francisco Bay Water Board may revise the TMDL and implementation plan and schedule as necessary.
Cal. Code Regs. Tit. 23, § 3919.9