Floodwall for Bay Area Wastewater Treatment Plant

In July of 2011, Vallejo Sanitation and Flood Control District (District) received notification that the annexation to ABAG’s Local Hazard Mitigation Plan (LHMP) was confirmed by FEMA and that compliance with the planning requirements of the Disaster Mitigation Act of 2000 was satisfied. This confirmation was critical when the applying for a FEMA Hazard Mitigation Grant earlier this year.

Following the August 2014 South Napa Earthquake the District participated in a briefing by CalOES and FEMA to discuss the overall damage and plans for recovery. During the briefing the District was informed that as a result of the State of Emergency, Hazard Mitigation Grant money would be available. Any agency with a confirmed LHMP was encouraged to apply. Subsequently, FEMA released new data that placed the District’s wastewater treatment plant in the 1% annual chance flood zone; the flooding would be even more severe in the coming years considering the projected sea level rise. With this information and available Hazard Mitigation Grant money the District quickly went into planning mode to design and construct a flood wall around the treatment plant. (Visit our website to review the Conceptual Design of the flood wall drafted by Terra Engineering: Select Job #2015-021-RFP-ENG).

In October 2015, the District received notification that FEMA approved the Pre-Award Cost and Phase One funding totaling $232,300. If all requirements are met during this Phase One portion, including the update of the LHMP, Phase Two funds up to a total of $2,000,000 will be released. The total cost of flood wall project is projected at $4,273,105, of which FEMA may contribute $2,000,000. The maximum amount of any Hazard Mitigation Grant Application is $3,000,000.

It was through the Districts forward thinking to update the 2010 Local Hazard Mitigation Plan with ABAG, prior to a declared disaster. The district is finalizing the 2015 LHMP update to be submitted to CalOES by the end of December 2015. The District is hopeful the plan will be confirmed before the March 2016 expiration date to receive full funding for the project.

Article by Zoeanne Tafolla, VSFCD, Director of Safety/Risk Management
You can contact Zoeanne Tafolla for more information about the project and VSFCD’s Hazard Mitigation Plan Update.

Last modified: 12.04.2015