Leadership Roster

For current activities and meetings, check the Activities and Events Calendar.
Click on the groups, committees, and activity sections below to learn more.
All meetings are held online unless otherwise stated.
Sierra Club meetings are open to Sierra Club members and invited guests.
Meetings are not open to the public or members of the working press, and may not be reported publicly.
Inquire with committee leadership if you're interested in attending meetings.

PO Box 2663
Berkeley, CA 94702
510.848.0800
info@sfbaysc.org

Regional Groups

Activities Sections

Chapter Leaders at California State Level


Executive Committee

Meets on the second Monday of each month at 6:30 PM.
The ExCom has nine members plus one rep from each regional group.
ExCom members are elected through annual elections by chapter members.
(five to be elected in odd-numbered years and four in even-numbered years)
No at-large member may serve as a voting member of the ExCom for more than six consecutive years.
 

  • Chair John Bauters (elected to 2026/2027 term)
  • Vice Chair Max Davis (elected to 2025/2026 term)
  • Secretary Chance Boreczky (non-voting)
  • Treasurer Peter Roeper (non-voting)
  • Compliance Officer Marlene Esquivel (non-voting)
  • Nick Pilch (elected to 2025/2026 term)
  • Brian Quan (elected to 2026/2027 term)
  • Chava Kronenberg Bear (elected to 2026/2027 term)
  • Shawn Danino (elected to 2025/2026 term)
  • Garen Checkley (elected to 2025/2026 term)
  • Kate Blumburg (elected to 2026/2027 term)
  • Prodan Statev (elected to 2026/2027 term)

Group Delegates • Alternates

  • Delta: Paul Seger • Patt Young
  • Marin: Jenny Silva • Nate McKitterick / Thomas Tunny
  • Mount Diablo: Mark Van Landuyt • John Chatowski
  • Northern Alameda County: Phyllis Orrick • Andy Katz
  • San Francisco: Sarah Boudreau • Joanna Gubman / Kendal Pierce
  • Southern Alameda County: Mark Evanoff
  • Tri-Valley: Donna Cabanne • Carol Silva
  • West Contra Costa County: Norman La Force • Hari Lamba


Conservation Issue Committees

Committees to formulate chapter policies and organize club efforts.
Some of our regional groups have parallel subcommittees for a more localized impact.
Read more about conservation issues here.

East Bay Public Lands

Meets on the second Wednesday of each month at 7:30 PM.
Read more about parks and open space work here.
Find the latest blog posts on this issue here.
 

  • Chair: Barb Smith
  • Vice Chair: Scott Bartlebaugh
  • Secretary: Dan Leaverton
  • Rochelle Nason • Matthew Plunkett • Jamuel Starkey • Jacob Dadmun • Cortis Cooper • Glenn Kirby • Aaron Godfrey • Heath Maddox • Kris Fallon • Frank Wong • Phyllis Orrick • Donna Cabanne • Juliet DiStefano • Ania Odyneic • Alec Flett


Energy and Climate Change

Meets on the third Thursday of each month at 7:00 PM.
Read more about fighting dirty energy here.
Read more about advocating for clean energy here.
 

  • Chair: Rebecca Franke
  • Richard Rollins • Chance Borezcky • Shoshana Wechsler • Tom Kunhardt • Olga Mandrussow • Shirley Lewandowski • Eric Brooks • Zachary Russ • Susan Sepanik • Kelly Abreu • Jean Woo • Claire Broome • Arthur Clinton • Igor Tregub • Thomas Dattilo • Isaac Serratos
  • Climate Literacy Subcommittee Chair: Cheney Munson
    • Read more about climate literacy work here.


Federal Parks

Meets on the first Thursday of each month at 7:30 PM.
Concerned with planning and other issues in the region's national parks.
Read more about wilderness and wildlife work here.
Find the latest blog posts on the issue here.
 

  • Co-Chairs: Alan Carlton • Eric Brooks
  • Becky Evans • Jerry Meral • Norman LaForce • Marigene Allison • Mark Linde • Sarah Butler • Laura Charitan • Nancy Okada • Chance Cutrano • John Hooper


Transportation and Compact Growth

Meets on the third Tuesday of even months at 12:00 PM
and the third Wednesday of odd months at 6:00 PM.
Read more about transportation and compact growth work here.
Find the latest blog posts on the issue here.
 

  • Chair: Chance Boreczky
  • Vice Chair: Maxwell Davis
  • Secretary: Julia Daniel
  • Jenny Silva • Howard Strassner • Jean Walsh • Matthew Zirbel • Marjorie Alvord • Eric Johnson • Zachary Russ • Pranav Harathi • Joe Sangirardi • Peter Darche • Vallery Lancey • Pooja Muddasani • Jeff Trull • Alex Taylor


Water

Meets on the second Thursday of each month at 7:00 PM.
Read more about our work on water here.
Find the latest blog posts on the issue here.
 

  • Co-Chairs: Frank Egger • Heinrich Albert
  • Mark Shahinian • Martha Davis • William Martin • Kelly Abreu • Christopher Pohl • Eric Brooks • Jim Hine • Kieran Farr • Emilie Strauss • Eric Sommargren • Gary Wolff • John Hooper • Nancy Okada • Donna Cabanne • Paul Seger


Organizing Committees

These committees focus on the chapter's functionality and continuity.

Activities

Provides oversight for the chapter's diverse outings programs.
Read more about activity sections here.
 

  • Chair: William Yragui
  • Vice Chair: Bob Solotar
  • Secretary/Ombudsman: Sanjay Reddy

Finance

Monitors and approves budgetary concerns for the chapter.
 

  • Chair: Peter Roeper
  • Nick Pilch • Matt Williams • Becky Evans • Nancy Okada • Paul Seger

Legal Advisory

 

  • Tom Tunny • Nathaniel McKitterick • Isaac Serratos • Ryan Patterson • Matthew Rossiter • Mark Shahinian • Daniel Yost • John Bauters

Membership

Meets on the first Tuesday at 5:30 PM. 
Focuses on member engagement, member events, and volunteer recruitment.
Helps new volunteers find a good fit amongst the club.
 

  • Chair: Marcia West
  • Vice Chair: Emma Kaye
  • Susan McKenzie • Lisa Sharp • Carol Drake • Jacque Fernandez  • Nick Pilch  • Jason Divine  • Emma Moltyaner

Nominations and Elections

Oversees the annual chapter ExCom elections.
Read more about the chapter nominations and elections process here.
 

  • Sue Carlisle • Chance Boreczky • John Bauters • Kate Blumberg • Phyllis Orrick


Political Committee

Meets on the first Monday of each month at 7:00 PM.
Determines chapter/club endorsements in local elections.
Coordinates efforts to elect strong environmental candidates.
Read about the endorsement process, and view the current nominations here.
 

  • Chair: John Rizzo
  • Andy Katz • Phyllis Orrick • Jane Lew • Ryan Patterson • Audrey Liu • George Spies  • Jeff Royal • Peter Darche

Group Representatives • Alternates/Second Alternates

  • Delta: Mark Linde • Bruce '0le' Ohlson
  • Northern Alameda County: Nick Pilch • Kera Binns/Max Davis
  • Marin: Sam Ruben • Bryan Shiles
  • Mount Diablo: Mark Van Landuyt • Wietske Medema
  • San Francisco: Peter Belden • Chava Kronenberg Bear/Kieran Farr
  • Southern Alameda County: William Yragui 
  • Tri-Valley: Linda Milanese • Erik Sommargren
  • West Contra Costa County: Norman La Force • Janet Flint

Special District Representatives • Alternates

  • Water: Nancy Okada • Heinrich Albert
  • East Bay Parks: Glenn Kirby
  • Transportation: Peter Darche


Regional Groups

Each chapter of the Sierra Club is divided into regional groups.
Groups address environmental issues within their geographic areas.
Each group is guided by an ExCom elected by members of the club in annual elections.
Read more about regional groups here.
To find your next local meeting, check the Activities and Events Calendar.


Delta

Meets on the second Friday of each month at various locations.
The ExCom has five members.
The Delta group represents Eastern Contra Costa County.
Read more about the Delta group here.
 

  • Chair: Paul Seger (elected to 2025/2026 term)
  • Vice Chair: Patt Young (elected to 2025/2026 term)
  • Treasurer: Joe Kovalick (non-voting)
  • Secretary: Mark Linde (appointed to 2026 term)
  • Bruce '0le' Ohlson (elected to 2025/2026 term)


Marin

Meets on the second Thursday of each month at 7:00 PM.
The ExCom has eleven members.
The conservation committee meets before the ExCom meeting at 6:00 PM.
Read more about the Marin group here.
 

  • Chair: Holli Thier (elected to 2025/2026 term)
  • Vice Chair: Nate McKitterick (elected to 2025/2026 term)
  • Secretary: Sam Penrose (non-voting)
  • Treasurer: Chance Cutrano (non-voting)
  • Bryan Shiles (elected to 2025/2026 term)
  • Sam Ruben (elected to 2026/2027 term)
  • Jennfer Silva (elected to 2026/2027 term)
  • Thomas Tunny (elected to 2026/2027 term)


Mount Diablo

Meets on the first Monday of each month at 6:00 PM.
The ExCom has seven members.
Read more about the Mount Diablo group here.
 

  • Chair: Mark Van Landuyt (elected to 2026/2027 term)
  • Vice Chair: Wietske Medema (elected to 2025/2026 term)
  • Treasurer: Beth Bittle (elected to 2026/2027 term)
  • John Chatowski (elected to 2025/2026 term)
  • Rebecca Barrett (elected to 2025/2026 term)
  • Jonathan Bash (elected to 2025/2026 term)


Northern Alameda County

Meets on the fourth Monday of each month at 7:30 PM.
The ExCom has nine members.
The conservation committee meets before the ExCom meeting at 6:30 PM.
Read more about the Northern Alameda County group here.
 

  • Chair: Max Davis (elected to 2026/2027 term)
  • Vice Chair: Jacob Dadmun (elected to 2026/2027 term)
  • Secretary: Ross Bernet (non-voting)
  • Treasurer: Carter Shoop (non-voting)
  • Shawn Danino (elected to 2025/2026 term)
  • Nick Pilch (elected to 2025/2026 term)
  • Charlene Wang (elected to 2025/2026 term)
  • Kera Binns (elected to 2026 term)
  • Andy Katz (elected to 2026/2027 term)
  • Phyllis Orrick (elected to 2026/2027 term)
  • Terry Taplin (elected to 2026/2027 term)


San Francisco

Meets on the third Tuesday of each month at 8:00 PM.
The ExCom has nine members.
The conservation committee meets before ExCom each month at 7:00 PM.
Read more about the San Francisco group here.
 

  • Chair: Charles Whitfield (elected to 2025/2026 term)
  • Vice Chair/Treasurer: Brian Reyes (elected to 2025/2026 term)
  • Secretary: Howard Strassner (elected to 2026/2027 term)
  • Sarah Boudreau (elected to 2026/2027 term)
  • Kieran Farr (elected to 2025/2026 term)
  • Garen Checkley (elected to 2026/2027 term)
  • Joanna Gubman (elected to 2026/2027 term)
  • Mark Shahinian (elected to 2025/2026 term)
  • Kendal Pierce (elected to 2026/2027 term)

Subcommittees


Southern Alameda County

Meets on the fourth Wednesday of each month at 7:00 PM.
The ExCom has five members.
Read more about the Southern Alameda County group here.
 

  • Chair/Secretary: William Yragui (elected to 2026/2027 term)
  • Vice Chair: Kelly Abreu (elected to 2026/2027 term)
  • Treasurer: Carol Drake (non-voting)
  • Glenn Kirby (elected to 2025/2026 term)
  • Mark Evanoff (elected to 2026/2027 term)


Tri-Valley

Meets on the second Wednesday of each month at 7:30 PM.
The ExCom has six members.
Read more about the Tri-Valley group here.
 

  • Chair: Carol Silva (elected to 2025/2026 term)
  • Vice Chair: Erik Sommargren (elected to 2026/2027 term)
  • Secretary: Linda Milanese (elected to 2025/2026 term)
  • Treasurer: Donna Cabanne (elected to 2026/2027 term)
  • Lynn Seppala (elected to 2026/2027 term)
  • Shirley Lewandowski (elected to 2025/2026 term)


West Contra Costa County

Meets on the first Saturday of each month at 9:00 AM.
The ExCom has 7 members.
Read more about the West Contra Costa County group here.
 

  • Chair: Norman La Force (elected to 2026/2027 term)
  • Vice Chair: Janet Flint (appointed to 2025/2026 term)
  • Secretary/Treasurer: Lisa Park (elected to 2026/2027 term)
  • Cesar Zepeda (elected to 2026/2027 term)
  • Hari Lamba (elected to 2025/2026 term)
  • Jamin Pursell  (elected to 2025/2026 term)
  • Suzanne Wilson (elected to 2025/2026 term)


Activities Sections

Find our chapter's calendar of outings on our Activities and Events Calendar.
Read more about our activity sections here.

Backcountry Skiing

Read more about our backcountry skiing section here.
skiing@sfbaysc.org

  • Chair/Treasurer: Brenda Giese
  • Webmaster: Kathy Kohberger

Backpacking

Read more about our backpacking section here.
backpacking@sfbaysc.org

  • Chair: Roger Williams
  • Leader and Backpacker Training: Thomas Meissner
  • Secretary/Treasurer: Sanjay Reddy
  • Database Coordinator/Social Media Lead: JP Torres
  • Trip Approver: Debbie Barack
  • New Leader Coordinator: Danielle Henkel

Cycling

Read more about our cycling section here.
cycling@sfbaysc.org

  • Chair/Treasurer: Glenn Kirby
  • Outings Coordinator: Kent Lewandowski
  • Secretary: William Yragui

Hiking

Read more about our hiking section here.
hiking@sfbaysc.org

  • Chair/Outings Coordinator: Bob Solotar
  • Trails Issues Coordinator/Liaison: Nancy Okada

Inspiring Connections Outdoors (ICO)

Provides and facilitates backpacking, day hikes, car camping and river rafting to Bay Area youth,
giving them the opportunity to experience Northern California's natural wonders.
Read more about our ICO section here.

ICO Backpacking

ICO Rafting

Rainbow Sierrans

Read more about our Rainbow Sierrans section here.

Sierra Couples

Read more about our Sierra Couples section here.
sierracouples@sfbaysc.org

  • Membership: Frank Alexander
  • Treasurer: Roy French

Sierra Singles

Meets on the first Tuesday of April, August, and December.
Age range: 35 - 65
Read more about our Sierra Singles section here.
sierrasingles@sfbaysc.org

  • Secretary: Robin Miles
  • Information/Treasurer: Albert Chiu
  • Julia Cordell
  • Seth Feinberg

Snowcamping

Read more about our Snowcamping Section here.
snowcamping@sfbaysc.org

  • Chair: Tim Surber
  • Treasurer: Hadrian Klinker

Solo Sierrans

Most participants over 65
Read more about our Solo Sierrans Section here.
solosierrans@sfbaysc.org

  • Chair: Elyse Dukatz
  • Treasurer: Doris Wolf
  • Information/Membership Chair: Dolores Gruenewald

 

Chapter Leaders at California State Level

Sierra Club California

Addresses conservation policy statewide.
Learn about Sierra Club California on their website.

California Conservation Committee

Sets Club conservation policy for statewide concerns and matters that cross chapter boundaries.
Each chapter appoints two delegates, and several of the committee's officers come from the Bay Chapter as well.
Learn more about the CCC on their website.

  • Delegates: Joanna Gubman • Michael Sacks
  • Alternates: Gershon Bialer • Peter Belden • Phyllis Orrick

Council of Club Leaders

The CCL, aka the Sierra Club Council, has reps from each chapter as well as from other club entities.
It advises the board of directors on internal club matters.

  • Representative: Max Davis
  • Alternate: Brian Quan