Other municipal entities in Yolo County, such as Bayer, Davis, Esparto, Madison, and Winters, have selected Pathway B and joined the Priority 2 Management Zone for Yolo County.  The Management Zone has hired Valley Water Collaborative (VWC) to prepare the Preliminary Management Zone Proposal and Early Action Plan that are due December 28, 2024 for Management Zone participants.  VWC is a non-profit organization that was previously retained by Priority 1 subbasins to write similar reports.  For example, the Management Zone reports VWC previously prepared for the Modesto and Turlock subbasins may be found here: https://www.cvsalinity.org/resources/management-zone-development/

VWC has already begun preparing the reports required by the Water Board for the municipal entities that have selected Pathway B.  The report is estimated to cost $205,000 in total for all Management Zone participants.  Management Zone participants are further sub-divided into different sectors such as municipal, agricultural, and food/wine/other.  The municipality sector anticipates to cover approximately 20% of the overall $205,000 cost, with other sectors covering the remainder.  In paying for its 20% share, municipalities would cost allocate using a flow-tier-fee-based model and consider the total volume discharged on an annual basis in million gallons.  Fees would be then assigned commensurate with each entity's discharge.  The proposed flow-tier model is as follows: 
 

In calendar year 2023, the Wild Wings WWTP discharged 20,315,200 gallons, or 20.3152 million gallons, in tertiary effluent.  Under the flow-based model, Wild Wings WWTP would fall in Tier I with an estimated contribution of $4,000. 
                                                                                                               
The CSA Manager will continue to negotiate with VWC and the Management Zone Advisory Committee to advocate that the fiscal impact to the Wild Wings community remains as low as possible.  County staff will not agree to contribute an amount higher than $4,000, and would return to the Board of Supervisors in the event contributing a higher amount becomes necessary.  As the Pathway B compliance option is the most cost-effective for the Wild Wings WWTP, County staff recommend that the Board of Supervisors adopt the Pathway B compliance approach and delegate authority to the CSA Manager to enter into a contribution agreement with VWC to implement this approach.  The contribution agreement is in Attachment B and has been reviewed by County Counsel.