The URL can be used to link to this page

Home My WebLink About5.10.22 Board Correspondence - FW_ Glenn Groundwater Authority Technical Advisory Committee Meeting- May 13, 2022 (2) From:Paulsen, Shaina To:BOS Subject:Board Correspondence - FW: Glenn Groundwater Authority Technical Advisory Committee Meeting- May 13, 2022 Date:Tuesday, May 10, 2022 11:40:09 AM Attachments:2022_05_13_CGA_GGA Joint TAC Meeting Agenda FINAL.pdf Please see attached Board Correspondence. Shaina Paulsen Associate Clerk of The Board Butte County Administration 25 County Center Drive, Suite 200, Oroville, CA 95965 T: 530.552.3304 | F: 530.538.7120 From: Lisa Hunter <LHunter@countyofglenn.net> Sent: Tuesday, May 10, 2022 11:24 AM Subject: Glenn Groundwater Authority Technical Advisory Committee Meeting- May 13, 2022 ATTENTION: This message originated from outside Butte County. Please exercise judgment before opening .. attachments, clicking on links, or replying. Please see the attached agenda for the Glenn Groundwater Authority/Colusa Groundwater Authority Joint Technical Advisory Committee meeting. CGA/GGA Joint Technical Advisory Committee Meeting Join Zoom Meeting https://countyofcolusa.zoom.us/j/6707238820?pwd=NjFMcnJOUENuSFhtRFFtaWltejYzZz09 Meeting ID: 670 723 8820 Passcode: 004212 One tap mobile +16699006833,,6707238820#,,,,*004212# US (San Jose) +12532158782,,6707238820#,,,,*004212# US (Tacoma) _____________________________________________________________________________________ Additionally, meeting information can be found on the Glenn County website at: https://www.countyofglenn.net/resources/minutes-agendas-groundwater-authority-technical-advisory- committee-water/glenn-19 Best Regards, Lisa Hunter Program Manager Glenn Groundwater Authority (530) 934-6540 (office) .m. WƚźƓ ƚƚƒ aĻĻƷźƓŭ https://countyofcolusa.zoom.us/j/6707238820?pwd=NjFMcnJOUENuSFhtRFFtaWltejYzZz09 Meeting ID: 670 723 8820 Passcode: 004212 One tap mobile +16699006833,,6707238820#,,,,*004212# US (San Jose) +12532158782,,6707238820#,,,,*004212# US (Tacoma) _____________________________________________________________________________________ * Item 1. Introductions 2. TAC) a. MeetingMinutes 3. Comment 4. 5. 6. date 7. 8. 9. - https://www.countyofglenn.net/dept/planning-community-development-services/water-resources/glenn- groundwater- In compliance with the Americans with Disability Act, if you require special accommodation to participate in this meeting, please contact the Colusa County Water Resources Division at 530-458-0891 or Glenn County Water Resources Division at 530-934-6540 prior to any meeting and arrangements will be made to accommodate you. CGA/GGA Joint Technical Advisory Committee Meeting 1.Roll Call 1.Thad Bettner 2.Denise Carter 3.Bill Vanderwaal 4.Jim Wallace 5.Darrin Williams, CC GroundwaterCommission 6.Deke Dormer 7.Ben King Brandon Davison, DWR, ex-officio member 1.Tavis Beynon 2.Don Bills 3.Emil Cavagnolo 4.Zac Dickens 5.Mark Lohse 6. Matt Deadmond 2.March March 11, 2022CGA/GGA Joint TACMeetingMinutes Due to safety concerns and directives from the Governor and Federal Government related to COVID-19, . 1.C The meeting was called to order at approximately 1:03 p.m. I GGA: Emil Cavagnolo, Zac Dickens, Leslie Nerli, Don Bills, Mark Lohse. CGA: Denise Carter, Jim Wallace, Bill Vanderwaal, Deke Dormer, Ben King, Brandon Davison (DWR, ex- officio) A quorum of both member groups was present. Lisa Hunter (GGA Staff),Grant Davids (Davids Engineering, Inc.), Jim Brobeck, Katie Klug (Davids Engineering), Ken Loy (West Yost), Jeff Davids (Davids Engineering), Anna Reimer (West Yost), Luis Mendoza (Glenn County), Arne Gustafson, Ritta Martin, Joe Turner, Shelly Murphy (CGA), Jaime Lely. 2. a.* CGA: Committee Member Bill Vanderwaal moved to approve the minutes from the August 13, 2021 CGA/GGA Joint TAC Meeting. Member Deke Dormer seconded and the motion passed per roll call vote. Ben King- Aye Bill Vanderwaal- Aye Deke Dormer- Aye Jim Wallace - Aye GGA Committee Member Don Bills moved to approve the minutes from the August 13, 2021 CGA/GGA Joint TAC Meeting. Member Emil Cavagnolo seconded and the motion passed per the following roll call vote: Don Bills- Aye Emil Cavagnolo- Aye Mark Lohse- Aye Zac Dickens – Aye Leslie Nerli- no audio during vote Page | 1 CGA/GGA Joint Technical Advisory Committee Meeting Minutes | March 11, 2022 | 1:00 p.m. 3.P No public comment was heard. 4.P CEQA – California Environmental Quality Act GDE - Groundwater Dependent Ecosystems GSA – Groundwater Sustainability Agency GSP – Groundwater Sustainability Plan MO – Measurable Objective MT – Minimum Threshold PMAs – Projects and Management Actions PPT – Powerpoint Presentation SGMA – Sustainable Groundwater Management Act SMC – Sustainable Management Criteria TAC – Technical Advisory Committee UR – Undesirable Result Grant Davids of consulting firm Davids Engineering provided an overview of agenda presentation items 4 and 5. Mr. Davids introduced Ken Loy of West Yost who gave a presentation on the sustainability management criteria included in the final Colusa Subbasin GSP. Proceedings/Discussion Ben King asked for clarification on the statement that the final GSP is more protective, whereby Mr. Loy explained that the City of Orland was concerned about the minimum thresholds being too low and that the final GSP has raised those thresholds to address that concern. Mr. King also asked if all three stages are being monitored on the multi-completion wells, whereby Mr. Loy confirmed they were. Leslie Nerli stated the new municipal well being built in the City of Orland would be an appropriate well monitoring site. Jim Wallace asked if the technical team has been monitoring each individual well and comparing the data to the MT’s and Annual Report, whereby Mr. Grant Davids stated that information would be presented later in the meeting. 5.P Mr. Loy turned the presentation over to Katie Klug of Davids Engineering, who reviewed the GSP Annual Report and overview of groundwater conditions and water supply through Water Year 2021. Page | 2 CGA/GGA Joint Technical Advisory Committee Meeting Minutes | March 11, 2022 | 1:00 p.m. Ms. Klug turned the presentation over to Anna Reimer of West Yost who reviewed groundwater conditions and measured land subsidence for the subbasin. Grant and Jeff Davids (Davids Engineering) answered various questions on different slides throughout the presentation related to groundwater storage calculations and the annual and cumulative changes in groundwater storage. The presentation was then handed back to Ms. Klug to present information on water supply and water use, in addition to water use sectors, projects and management actions updates, the well monitoring pilot project, and data related to groundwater extraction. Ms. Klug invited comments and questions from the presentation, and encouraged members to suggest any additional information that should be available in the Annual Report. Proceedings/Discussion: Mr. King asked if there is a separate measure for critical infrastructure in relation to subsidence; whereby, Mr. Loy stated there is not. Mr. King also asked what the role of the TAC is in reporting out the subsidence information and engaging the respective Boards; whereby, Mr. Loy referred Mr. King to Chapter 7 of the GSP Implementation section for guidance. Ms. Hunter stated there is a lot of coordination expected between the respective boards and TACs as the TACs report out to their respective Boards. Mr. King asked if the reported deliveries that go out of the basin from the Tehama-Colusa Canal are included in the information presented, whereby Ms. Klug stated the information is based on contractors from each of the respective service areas and includes upstream and downstream deliveries. Jim Brobeck asked if the reports of sinkholes are reflected in the subsidence readings; whereby, Mr. Loy stated the phenomenon may be related but the subsidence measurement is a different metric and reviewed the recent sightings and reports of sinkholes in the area. Jim Brobeck asked if data would be gathered from the irrigation districts for groundwater extraction in regards to the expansion of groundwater infrastructure; whereby, Ms. Klug said data availability is sparse and does not have information related to that. Jim Wallace asked how many applications were received for the well monitoring pilot program and what the expected cost is per site; whereby, Ms. Klug stated the cost per site is approximately $9,000-$10,000, and Ms. Hunter stated the project is still expanding as a Round 2 solicitation just ended and staff also reached out to sites that were not selected the first round to gauge interest to be included in the program. Approximately sixteen sites have indicated interest in the program. Jim Brobeck asked how the wells are characterized as well as the well depths for each well in the well monitoring pilot program to ensure the sites are appropriate, whereby Mr. Grant Davids stated the program is less focused on collecting scientific data and more focused on determining the cost for monitoring groundwater production. Mr. Loy further stated that each of the Representative Monitoring Network wells in the program do have screen levels and the data Mr. Brobeck asked for included in the GSP. Lisa Hunter stated the presentation and related materials would be available online shortly. Page | 3 CGA/GGA Joint Technical Advisory Committee Meeting Minutes | March 11, 2022 | 1:00 p.m. 6.*A Ms. Hunter introduced the item and noted that the CGA TAC no longer has a quorum. Ms. Hunter suggested the group discuss what the anticipated workload for the committee would be and how often the group would need to meet or table the item to a later meeting. Mr. Bills asked how the meeting schedule corresponds to the short time frame in between state mandated deadlines, whereby Ms. Hunter stated documents should be available as needed for review prior to the meetings. Mr. King suggested conducting meetings on another week day besides Friday, as well as combining the two TACs into one body so as to increase the chances of having a quorum. Mr. King also spoke to the need to have data and reports available for review sooner, whereby Mr. Grant Davids stated going forward the reports should be expected sooner but the GSP regulations have made the deadlines very tight. Discussion ensued. Ms. Hunter noted that soon there will not be consultants involved as much in the meetings going forward. 7.Mem Ben King asked for a status update on the new well ordinance expected in Glenn County; whereby, Ms. Hunter stated the County is currently working on a draft ordinance and soliciting commentary from various agencies. Mr. King also asked if there is a comment period and if the County plans on collaborating with Colusa County; whereby, Ms. Hunter stated Glenn County has been reviewing what other counties are currently doing and though there is no formal comment period, they are still accepting feedback. 8.Adjourn The meeting was adjourned at 3:41 p.m. Page | 4 CGA/GGA Joint Technical Advisory Committee Meeting Minutes | March 11, 2022 | 1:00 p.m. 1 Colusa Subbasin | Joint TAC Meeting CGA/GGA Joint Technical Advisory Committee Meeting Land Subsidence Benchmarks andHydrogeologic Investigation Work Plan Updates May 13, 2022 May 13, 2022 2 West YostWest Yost Anna Reimer, PG Ken Loy, PG, CEG, CHG Introductions Colusa Subbasin | Joint TAC Meeting Katie Klug, PhD Grant Davids, PE Davids EngineeringDavids Engineering May 13, 2022 33 OverviewGlenn County Discussion AreasColusa County Discussion Areas Land Subsidence Benchmark UpdateHydrogeologic Investigation Work Plan UpdateQuestions and Answers Colusa Subbasin | Joint TAC Meeting 1.2.3. Outline May 13, 2022 May 13, 2022 4 West YostWest Yost Anna Reimer, PG Ken Loy, PG, CEG, CHG Colusa Subbasin | Joint TAC Meeting Land Subsidence Benchmark Update May 13, 2022 5 InSAR Colusa Subbasin | Joint TAC Meeting ) satellite results color coded with InSAR Existing benchmarks color coded with change in land surface elevation between 2008 and 2017 surveys (9 years)Interferometric Synthetic Aperture Radar (change in land surface elevation between 2016 and 2021 surveys (5 years)Delineation of areas where measurable objectives (MO) and minimum thresholds (MT) may be exceeded based on results Measured Subsidence Map to the right shows: May 13, 2022 Additional benchmarks and a repeat survey of the benchmark network are needed to assess the sustainable management criteria (SMC) for land subsidence. 6 Glenn County Colusa Subbasin | Joint TAC Meeting May 13, 2022 7 Colusa County Colusa Subbasin | Joint TAC Meeting Glenn-Colusa Canal May 13, 2022 8 West Yost Ken Loy, PG, CEG, CHG Colusa Subbasin | Joint TAC Meeting Hydrogeologic Investigation Work Plan Update May 13, 2022 9 Permitting Attachments Drilling Methods Logging Methods Coordinate Surveys Benchmark Surveying Benchmark Installation Monitoring Well Sampling Monitoring Well Equipping Monitoring Well Development Methods to be Provided as Monitoring Well Design/Construction Colusa Subbasin | Joint TAC Meeting DescriptionInvestigation ApproachInvestigation MethodsReporting Each Investigation Task to Include: Introduction Subbasin OverviewHydrogeologic Investigations Work Plan Outline I.II.III. May 13, 2022 10 Framework and Change in Storage Calculations Aquifer Interactions and GDEsAquifer Interactions and Recharge Aquifer Interactions, Hydrogeologic --- StreamPrimary Aquifer Water Quality and Potential UpwellingLand Subsidence and Critical InfrastructureStreamPotentialHydrogeologic Framework and Monitoring NetworkHydrogeologic StreamFramework, Colusa Subbasin | Joint TAC Meeting Hydrogeologic Investigation Tasks Expand Shallow Groundwater Monitoring NetworkExpand Water Quality Monitoring NetworkExpand Land Subsidence Monitoring NetworkExpand Surface Water Monitoring NetworkWell Inventory ProgramColusa Subbasin Western Boundary InvestigationColusa Subbasin Model Update May 13, 2022 11 Colusa Subbasin | Joint TAC Meeting Questions and Answers May 13, 2022