MDIA Board Members

  • Steve Smith . . . . . . .  President

  • Dan Fitzgerald . . . . . Vice President

  • Jim McBride . . . . . . . Secretary

  • Nancy Topp . . . . . . .  Treasurer

  • Leslie Contreras

  • Staci Hobbet

  • Michelle Hummel

  • Bill Karieva

  • Carol Lane

  • Michael Marchiano

  • Jenn Roe

  • Liz Watson

Steve Smith

Steve grew up in Danville and has been an avid hiker and outdoor enthusiast his whole life. He is a docent, hike leader, back-country rover, leader of the Maintenance Volunteer Group, and member of the Trash Removal Project. He began volunteering on the mountain after completing a quest to hike all 162 miles of trails within the park.


Dan Fitzgerald

Dan grew up in Concord with a view of the mountain and spent some time exploring it with Michael Marchiano. When he retired, Dan completed the State Parks volunteer training and became an active member of the Trash Removal Project and a visitor center and roving docent. Dan also enjoys nature photography.

Vice President

Jim McBride

Jim is a general practice lawyer in Hayward, with roots in Martinez and Concord. He is a past president of the Southern Alameda Bar Association and a retired colonel, JAGC, in the California Army National Guard.


Nancy Topp

Nancy has enjoyed being a caretaker of Mount Diablo for over 30 years. She lives in Clayton and regularly enjoys a view of the Summit and North Peak from her back yard. Nancy is a CPA and uses her financial background to assist MDIA as our treasurer and accounting manager.


Leslie Contreras

Living in the shadow of Mount Diablo all her life, Leslie has always had a passion for the mountain. She contributes to MDIA as the event coordinator for the hiking program and as co-manager of the Mitchell Canyon Visitor Center.

Staci Hobbet

Staci is a Natural History Docent in Mount Diablo State Park, the lead of the Peregrine Team in Pine Canyon, and a graduate of the California Naturalist Program. Her focus is on natural history interpretation and outreach.

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Michelle Hummel

Michelle is an avid supporter of public lands and environmental stewardship. After moving to California a few years ago, she discovered the beauty of Mount Diablo and soon joined the Board to give back to the park. She is currently a PhD candidate in environmental engineering at UC Berkeley.

Bill Karieva

Bill has been exploring Mount Diablo and surrounding parklands, camera in hand, since 2003. He was challenged by a friend to hike all of the ever-growing network of trails on and around Mount Diablo, and eventually joined the Board. Bill publishes his local nature photography at, and his photographs have been included in many MDIA publications, Diablo Magazine, and in a new exhibit at California State University East Bay. On weekdays, he is a software designer.

Carol Lane

Carol is a retired Registered Nurse who loves to be active and find interesting things out in nature. She is an active trail maintenance volunteer and sees trail work as a way to give back for the enjoyment that she experienced as a trail runner.

Michael Marchiano

Michael is a lifelong resident of Contra Costa County. He has hiked, camped, studied, and even lived on the mountain (for a year). He has led nature hikes on the mountain for 50 years. He is very happily married to his wife Paula for 43 years, with four grown children and two grandchildren.

Jenn Roe

Jenn moved to Clayton 20 years ago, and since then Mount Diablo has been an extension of her own backyard. She is a natural history docent and co-founder and director of the park’s Mountain Talks speaker series and the monthly Mountain Walks, both of which are enrichment programs for our park volunteers. She also co-manages the Mitchell Canyon Visitor Center and is involved in the development of interpretive displays and programs.

Liz Watson

Liz has always enjoyed nature. Since moving to the Bay Area, she has had a special fondness for Mt. Diablo State Park. Liz is a special education teacher by profession and enjoys bringing her educational background into the park by providing interpretation on organized hikes. She has been a board member for six years and helps out with mail orders and membership.

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2018 MDIA Committee Members and Leads


Nancy Topp

Maintains archives and


Jim McBride

Develops required contracts

Corporate Governance

Jim McBride

Updates and maintains the documents contained within the MDIA Board of Directors’ Handbook

Fundraising/Grant Writing

Carol Lane

Develops fundraising strategies; obtains grants and donations


Leslie Contreras

Recruits hike leaders; advertises and leads hikes in the park


Nancy Topp

Negotiates appropriate insurance coverage and manages insurance-related matters

Interpretive Displays

Steve Smith

Designs and fabricates interpretive panels and visitor center displays

Interpretive Program Committee

Jenn Roe

Supports the development and enhancement of interpretive programs at Mount Diablo State Park

Marketing, Outreach and Publicity

Michael Marchiano

Develops portable displays and staffs events; furnishes material to advertise MDIA and recruit new members


Leslie Contreras, Jenn Roe

Recruits and trains docents; collects money and docent logs; cleans and maintains MCVC


Liz Watson

Maintains membership list; prepares membership communications; prepares and sends bulk mailings

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Dan Fitzgerald, Steve Smith

Handles merchandising, inventory, and reporting for merchandising inside and outside of the park, including refreshments and fulfillment


Nancy Topp

Recruits and nominates board members and officers

Park Maintenance

Steve Smith