7/17/2019 Kaweah Sub-Basin (KSB) Management Team Committee Meeting City of Visalia Wastewater Treatment Plant 7579 Avenue 288, Visalia, CA July 17, 2019 9:00 am Agenda 1. Roll Call, Agenda Overview and Introductions 2. Public Comment 3. Groundwater Sustainability Agency Updates and Progress 4. Coordination Agreement Status 5. Consultant Presentation and Recommendations 6. Other Business 7. Adjournment 1
7/17/2019 5. Consultant Presentation a. Approval of Amendments b. GSA Subsidence Approach's c. Water Quality – Minimum Thresholds, Measurable Objectives d. Monitoring Networks e. Next Steps & Future Activities 5.a Approval of Amendment to MSA and Task Order • Approval of Amendment 1 to Master Services Agreement – Compensation – Ownership of Documents • Approval of Amendment KBS-05.2018 – Basin Setting – For additional services provide in completion of the KSB Basin Setting Report 2
7/17/2019 5.b GSA Subsidence Approach’s for Minimum Thresholds and Measurable Objectives GSA Subsidence Approach’s for Minimum Thresholds and MOs • Subsidence Approach – Greater and Mid Kaweah GSAs 3
7/17/2019 Subsidence Minimum Thresholds – Greater Kaweah GSA Subsidence Minimum Thresholds – Mid Kaweah GSA 4
7/17/2019 GSA Subsidence Approach’s for Minimum Thresholds and MOs • Subsidence Approach – East Kaweah GSA – Given the experience/data evaluated through the East Kaweah, we are focusing on impacts to critical infrastructure which in our case was determined to be the Friant-Kern Canal – Historically, there has been very little subsidence in the East Kaweah. Recent InSAR data even suggests portions of the East Kaweah have slightly been in uplift by comparison to 2015 levels. – We set a Minimum Threshold rate of 9.5-inches in a year as that relates to an approximate 10% impact in capacity to the FKC. We’ll probably also use this as a cumulative subsidence number as well. However, given the up and down “breathing” the land has done between wet and dry years, we likely don’t have a subsidence issue in our area. – We will be focusing on impacts to deliveries on the current capacity of the FKC. With 8 Contractors in the GSA, we’ll know if there is a problem with someone getting water due to issues in the Kaweah area. 5.C Groundwater Quality MTs & MOs • MKGSA is committed to not causing water quality degradation during the implementation of projects and management actions • Degradation by GSA as result of Project or Management Action = MCL or Agricultural (AG) water quality objective (WQO) exceedance, so MCLs or Ag WQOs are Minimum Thresholds • MKGSA may add monitoring wells if needed to evaluate impacts of projects on groundwater quality – 75% of MCLs or AG WQO will be considered our Measurable Objectives • MKGSA will monitor water quality trends and take action if concentrations are trending toward the Minimum Thresholds • MKGSA will coordinate with other agencies responsible for addressing existing water quality degradation in the GSA 5
7/17/2019 Groundwater Quality SMC 5.d GWL Monitoring Network - MKGSA 6
7/17/2019 5.d GWL Monitoring Network - GKGSA 5.d GWL Monitoring Network - EKGSA 7
7/17/2019 5.d GWQ Monitoring Network - MKGSA 5.d Next Steps • Work continues on development of draft GSP sections targeting mid- summer (no later than mid-August) for release of public review drafts • Completion of Coordination Agreement In Progress with a Public Release in some GSPs • Complete Data Management System August through November 2019 • Coordination with Adjacent Basins on Sustainable Management Criteria • Save, Save, Save for investments needed during the Implementation Period 8
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