Who We Are

Jennifer Malone, Co-Chair


After working on a large-scale community needs assessment project with the regional planning authority in Columbus, Ohio, Jennifer spent many years leading publicly funded nonprofit agencies and professional provider organizations in Ohio and here in Marin.

Recently, she made the shift to her second career as a licensed marriage and family therapist, with private practice offices in Mill Valley and San Anselmo. Jennifer has an undergraduate degree in Political Science from U.C. Berkeley; a master’s in Public Policy and Management from The Ohio State University and a master’s in Counseling, also from Ohio State.

“In 2019, I jumped at the chance to be a member of Friends of Alto Tunnel. Knowing how the Cal Tunnel changed my commuting and recreational biking options, I’m convinced the Alto Tunnel would also make a huge improvement for Marin riders of all ages and persuasions, increasing riding, reducing driving, and improving road safety. And it would help complete the North-South Greenway. I’m excited to work for the success of this important project!”


Andrew Levine, Co-Chair

Andrew_LevineAndrew has been riding in Mill Valley since he got his first bike when he was four years old. While a student at Old Mill School, he delivered the Marin Independent Journal from canvas bags lashed to his BMX bike.

Love of the outdoors led to an interest in water and an education in Civil Engineering. Andrew has worked for EBMUD, the water utility for the East Bay, for 29 years, currently serving as the Manager of Information Systems for the organization.

He commutes to his job in Oakland by bicycle and is keenly aware of the strengths and weaknesses of Marin’s bicycle infrastructure. He saw his three children, now college students, struggle to be independent and explore their world on a bicycle due to these issues. Andrew hopes to be able to help improve safety and support green transportation options for future generations of Marin citizens.

“The Alto Tunnel is a critical piece of transportation infrastructure in Marin County. It is the most significant gap in the North-South Greenway, an amazing continuous series of multi-use pathways leading from Sausalito to Sonoma County. Opening the Alto Tunnel gap would allow residents of all abilities and fitness levels to safely travel on foot or by bike between cities. Many other parts of the country have built similar beautiful rail-to-trail pathways and they lead to a safer, happier, and healthier community. I look forward to the day when the opening of the Alto Tunnel creates that resource here in southern Marin.”


Michael Halloran, Co-Chair

Michael Halloran

Michael has worked as a management consultant on a range of projects around the world, including the launch of the UK’s first online bank, and as an executive with Morgan Stanley for ten years before joining a startup. He has served as an Assistant Scoutmaster for Troop One in Mill Valley and on the governance committee at Kenter Canyon Elementary School in Los Angeles.

Originally from Boston, Michael is a firm believer in the role of public-private partnerships and multimodal transportation. A graduate of Brown University and London Business School, he lives in Mill Valley with his wife and three children.

“I would like to see the Alto Tunnel reopened to strengthen the connections between communities, to make it easier to get around without needing to drive, and to contribute to efforts reducing our carbon footprint while giving more options for everyone to travel around Marin County, San Francisco, and the Bay Area.”


Paris Good, Event & Volunteer Coordinator

Paris Good

Paris is a 5th generation Mill Valley resident living in the Horse Hill neighborhood with her partner and dog. She grew up exploring Marin on foot and then worked at REI during college where she started cycling. Paris is passionate about active transportation and public transportation and when she found out that there was a community organization focused on opening the Alto Tunnel she knew she had to get involved.

She holds a Master’s Degree in Geography from San Francisco State University and a Bachelor’s Degree in Global Resource Systems from the University of British Columbia.

“I think the Alto Tunnel needs to be opened so that people can move around Marin easily without needing a car. I want to bike to Donut Alley or walk to dinner in Larkspur. My partner wants to be able to bike to work in Corte Madera without needing to ride so close to cars. Biking or walking over Camino Alto or Horse Hill is great when I want some exercise but it isn’t a good solution for most people. I think that this tunnel will be great for improving transportation accessibility throughout our community.”


Bjorn Griepenburg, Marin County Bicycle Coalition Liaison


Bjorn joined MCBC in 2016. As Policy & Planning Director, he leads the advocacy campaigns and efforts associated with the Road Program, toward completing the North-South and East-West Greenways and making bicycling and walking in Marin safe and convenient.

Bjorn’s passion for bicycling is driven by his desire to connect people of all ages, physical abilities, and income levels with their communities. You can find him commuting by bike between MCBC’s Fairfax office and the Downtown San Rafael SMART Station, or riding Marin’s fire roads on his gravel bike.

Prior to joining MCBC, Bjorn worked for the San Francisco Municipal Transportation Agency, where he concentrated on long range transit planning. He holds a Master’s Degree in Community & Regional Planning from the University of Oregon and a Bachelor’s Degree in Sociology from the University of California, Santa Barbara.


Heidi Scoble, Administrative Coordinator



Lee Larson

Lee LarsonLee was born in the Pacific Northwest and grew up riding a bike, swimming, skiing, hiking and sailing.  In 1983, she moved to Mill Valley, married and raised two sons.  Lee is a founding member of the San Francisco Bay Area National Association of Professional Organizers and has served on their advisory board.  During 19 years of volunteering in Marin County schools, Lee saw Safe Routes to School significantly improve community crosswalks, sidewalks and paths to get more and more students safely to school by bike or on foot. Lee has been a Friends of Alto Tunnel steering committee member since 2006 and has served as the Secretary and Video Chair.

“When I discovered that the old Alto Tunnel existed, I was inspired to help reopen this valuable community asset which will fill a critical gap to complete construction of Marin County’s North-South Greenway.  Studies show that reopening the tunnel and completing the Greenway will reduce traffic and get more people out to walk and ride than ever before.  When the Greenway is fully interconnected, people will have the freedom to decide whether to bike, walk or drive their cars to get around Marin County.  Reopen Alto Tunnel and finish building Marin’s North-South Greenway–it is vital for our community and for generations to come!”

Jim Kirsner

Jim had a 40-year career in accounting and finance in the Bay Area and currently serves on the boards of public and private businesses.  He has been involved in the project to open the Alto Tunnel for over 20 years.

Jim and his wife lived in Mill Valley for over 40 years and now live in Larkspur.  They cycle for recreation and for just getting around Southern Marin.  They have young grandsons in Corte Madera and Mill Valley and enjoy cycling with the whole family.

“I have dreamed for years (and years) about being able to use bike and pedestrian paths to get all around Marin and especially all around Southern Marin and opening the Alto Tunnel is the last (and in some ways the most important) gap in the needed infrastructure.”

Doug Nelson

DougDoug has been involved with the Alto Tunnel effort for most of the 25 years he has lived in Mill Valley.

He created the FOAT logo and the visual simulation of the south portal. He is a landscape architect working mostly on national park and historic landscape projects.  He also spent 6 years on the Mill Valley Parks & Recreation Commission.

“As a life-long bicyclist and daily bike commuter re-opening Alto Tunnel just makes pure sense – connecting the north and south portions of Marin’s North-South Greenway.  The tunnel is an untapped public resource that needs to be open for the common good.”


Don Herzog

Donald HerzogDon is a retired Civil and Geotechnical Engineer with over 50 years of experience in Marin County. He is an advocate for safe bicycle and pedestrian paths and facilities for over 30 years and was an early member of the Bay Area Ridge Trail Council (BARTC) Board of Directors and Executive Committee. Don has worked on the Alto Tunnel Project for almost 30 years and served as the Leader of The Friends of Alto Tunnel (FOAT) for many years.

“I want the Alto Tunnel reopened because it is the only possible safe and accessible non-motorized route suitable for users or all ages and abilities.  The Tunnel will eliminate over 2000 vehicle trips a day and will serve over two million users a year for generations to come at a capital cost of less than 25 cents per user.  Reopening the Tunnel is the most cost-efficient way to reduce traffic, reduce greenhouse gases, improve recreation opportunities, provide a safe route to after school activities, connect our non- motorized transportation network, protect the adjacent homes and improvements from ongoing collapse, and to generally improve the quality of life.  Imagine the outcry that would occur if tunnel were open now and someone proposed closing it.”