Napa County  
1195 THIRD STREET  
SUITE 310  
NAPA, CA 94559  
Agenda  
Thursday, December 11, 2025  
1:30 PM  
Board of Supervisors Chambers  
1195 Third Street, Third Floor  
Groundwater Technical Advisory Group  
Albert Filipelli (Chair)  
Monica Cooper  
Julie Chambon  
Miguel Garcia (Vice-Chair)  
Mathias Kondolf  
Brian D. Bordona, Secretary - Director  
Chris Apallas, County Counsel  
Jamison Crosby, Natural Resources Conservation Manager  
Brendan McGovern, Principal Planner  
Nick Fetherston, Planner II  
Alexandria Quackenbush, Meeting Clerk  
Angie Ramirez Vega, Meeting Clerk  
Aime Ramos, Meeting Clerk  
How to Watch or Listen to the Napa County Groundwater Technical Advisory Group Meetings  
The Napa County Groundwater Technical Advisory Group will continue to meet the 2nd Thursday  
of each month. There will be no regular meeting in January, May, June or October. August 19, 2025  
will be a special-joint meeting of the GTAG & GSA.  
The Groundwater Technical Advisory Group meets at 1195 Third Street, Suite 310, Napa, California  
94559. The meeting room is wheelchair accessible. Assistive listening devices and interpreters are  
available through the clerk of the Groundwater Technical Advisory Group. Requests for disability  
related modifications or accommodations, aids or services may be made to the Clerk of the  
Groundwater Technical Advisory Group's office no less than 72 hours prior to the meeting date by  
contacting (707) 253-4417 or meetingclerk@countyofnapa.org.  
The Groundwater Technical Advisory Group realizes that not all County residents have the same  
ways to stay engaged, so several alternatives are offered. Remote Zoom participation for members of  
the public is provided for convenience only. In the event that the Zoom connection malfunctions for  
any reason, the Groundwater Technical Advisory Group reserves the right to conduct the meeting  
without remote access.  
Please watch or listen to the Groundwater Technical Advisory Group meeting in one of the  
following ways:  
1.  
2.  
3.  
Attend in-person at the Board of Supervisors Chambers, 1195 Third Street, Napa, Third  
Floor.  
Watch on Zoom using the attendee link: https://countyofnapa.zoom.us/j/89426085834. Make  
sure the browser is up-to-date.  
Listen on Zoom by calling 1-669-900-6833 (Meeting ID: 894-2608-5834).  
If you are unable to attend the meeting in person and wish to submit a general public comment or  
a comment on a specific agenda item, please do the following:  
1.  
2.  
3.  
Email your comment to meetingclerk@countyofnapa.org. Emails will not be read aloud but  
will still become part of the public record and shared with the Groundwater Technical  
Advisory Group.  
Use the Zoom attendee link: https://Countyofnapa.zoom.us/j/89426085834. Make sure the  
browser is up-to-date. When the Chair calls for the item on which you wish to speak, click  
"raise hand". Please limit your remarks to three minutes.  
Call the Zoom phone number: 1-669-900-6833. (Meeting ID: 894-2608-5834). When the  
Chair calls for the item on which you wish to speak, press *9 to raise hand. Please limit your  
remarks to three minutes.  
**Please note that phone numbers in their entirety will be visible online while speakers are  
speaking**  
For more information, please contact us via telephone at (707) 253-4417 or send an email to  
meetingclerk@countyofnapa.org.  
ANY MEMBER OF THE AUDIENCE DESIRING TO ADDRESS THE COMMITTEE:  
ON A MATTER ON THE AGENDA  
Please proceed to the podium when the matter is called and, after receiving recognition from the  
Chair, give your name and your comments or questions. In order that all interested parties have an  
opportunity to speak, please be brief and limit your comments to the specific subject under  
discussion. Time limitations shall be at the discretion of the Chair or Committee, but is generally  
limited to three minutes.  
ON A MATTER NOT ON THE AGENDA  
Public comment is an opportunity for members of the public to speak on items that are not on the  
agenda but are within the subject matter jurisdiction of the Committee. Public comment is limited to  
three minutes per speaker, subject to the discretion of the Chair. Comments should be brief and  
focused, and speakers should be respectful of one another who may have different opinions. Please  
remember this meeting is being recorded and broadcasted live via ZOOM. The County will not  
tolerate profanity, hate speech, abusive language, or threats. Also, while public input is appreciated,  
the Brown Act prohibits the Committee from taking any action on matters raised during public  
comment that are not on the agenda.  
1.  
2.  
CALL TO ORDER; ROLL CALL  
PUBLIC COMMENTS AND RECOMMENDATIONS  
(The Committee invites comments and recommendations from the public concerning issues  
relevant to the charge of the Technical Advisory Group. Anyone who wishes to speak to  
the Technical Advisory Group on such a matter, if it is not on the agenda, may do so at this  
time. At the discretion of the Chair, individuals will be limited to a three-minute  
presentation. No action will be taken by the Technical Advisory Group as a result of any  
item presented at this time.)  
3.  
APPROVAL OF MINUTES  
The Secretary of the committee requests approval of the minutes from the  
September 11, 2025 TAG meeting.  
A.  
25-2008  
Draft Minutes  
Attachments:  
4.  
5.  
REPORTS AND ANNOUNCEMENTS  
ADMINISTRATIVE ITEMS  
Elect officers (Chair and Vice-Chair) for 2026 for the Technical Advisory  
Group (TAG).  
A.  
25-2005  
In this item the Technical Advisory Group (TAG) will review the  
proposed draft 2026 TAG meeting calendar for discussion and decision.  
The calendar proposes a schedule of meetings and topics for 2026 TAG  
Meetings.  
B.  
C.  
D.  
25-1984  
25-2018  
25-2019  
2026 Draft TAG Regular Meeting Schedule  
Attachments:  
The TAG will receive an update on the use of satellite and land-based  
remote sensing data for analysis of evapotranspiration and information that  
can be used to refine vineyard water use estimates for Napa Valley  
Subbasin integrated hydrologic modeling purposes.  
GRAPEX Presentation  
Attachments:  
Andrew Fisher, Professor at University of Santa Cruz, and Lisa Lurie,  
Executive Director of the Resource Conservation District of Santa Cruz  
County will make a presentation to the TAG on an innovative groundwater  
sustainability approach being implemented by the Pajaro Valley  
Groundwater Management Agency that incentivizes growers to capture  
and infiltrate surplus stormwater.  
RENEM Briefing Sheet  
RENEM Presentation  
Attachments:  
Technical Advisory Group (TAG) members will receive a presentation on  
Project 1 of GSP Implementation: Managed Aquifer Recharge, including  
an update on the feasibility study underway. The TAG will also receive an  
update on current vineyard fallowing in Napa Valley. This is intended to  
spur discussion, questions, and provide feedback to staff and participants.  
E.  
25-2017  
GPR Implementation and Recharge Feasibility Scenario Development  
Presentation  
Attachments:  
6.  
7.  
FUTURE AGENDA ITEMS  
ADJOURNMENT  
I HEREBY CERTIFY THAT THE AGENDA FOR THE ABOVE STATED MEETING WAS  
POSTED AT A LOCATION FREELY ACCESSIBLE TO MEMBERS OF THE PUBLIC AT THE  
NAPA COUNTY ADMINISTRATIVE BUILDING, 1195 THIRD STREET, NAPA, CALIFORNIA  
ON 12/8/2025 BY 11:30 AM. A HARDCOPY SIGNED VERSION OF THE CERTIFICATE IS ON  
FILE WITH THE COMMITTEE CLERK AND AVAILABLE FOR PUBLIC INSPECTION.  
AIME RAMOS (By e-signature)  
Aime Ramos, Committee Clerk