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All DEHA Directors and Advisors are non-paid volunteers

Brian Pepper / President

Brian has been an active member in several equestrian associations over the past decade including, Bay View Horseman’s Association, Tri-Cities Horseman’s Association, Concord Mt. Diablo Trail Ride Association, Contra Costa County Horseman’s Association and California State Horseman’s Association.

Brian served or currently serves on not-for-profit and non-profit Boards where he has held leadership roles including:

  • Past Vice President -California Natural Gas Vehicle Coalition

  • Past Director – Contra Costa County Horseman’s Association

  • Past President – Concord Mt. Diablo Trail Ride Association

Valerie Watase-Sterling /  Vice President / Acting Secretary

Valerie is a lifelong Contra Costa equestrian. She has participated in many disciplines including English, western, competitive trail riding, dressage, gymkhana, endurance, and three day eventing. She was a National Champion of the North American Trail Ride Conference (NATRC), and Top Ten at the Morgan Horse Nationals in Oklahoma City for Ladies Hunters.

She has been involved for ten years with the United States Pony Club (USPC), serving in many capacities including District Commissioner. She has logged countless hours teaching horsemanship to various groups including Girl Scouts, Boy Scouts, 4H and others.  

Valerie is licensed Physical Therapist with thirty five years experience, and owns Lafayette Physical Therapy Practice in Lafayette, California. In her professional career, she has worked on innumerable riders who have suffered musculoskeletal injuries.

She completed a Therapeutic Riding program at the National Center for Equine Facilitated Therapy and Valerie took third place World Champion Mule Brayer at Bishop Mule Days.

Beth Scroggs / Treasurer


Beth has loved all things equine since her first Roy Rogers stick horse at age two. She currently enjoys riding her Tennessee Walking Mule on the Mt Diablo trails.


She serves as the Joint DC of Clayton Canyon Pony Club, is active with the Concord Mt Diablo Trail Ride Association, San Ramon Valley Horsemen, and rode in the George Cardinet 80th Birthday Parade in downtown Clayton. 

She is a retired Federal Western Region Administrator, who also counts scouting and beekeeping as hobbies.

Larry Sterling 

Larry wears too many hats to narrow down a title. His greatest gifts include; motivation and determination, fabulous chef, avid equestrian, countless hours of time donated, he is a voice of reason and advocate, and a passionate person.

Diablo Equestrian Heritage Association

Serving the Diablo Valley local community

Clayton, CA

Terri Buckman on Cougar Rock on the Tevis Cup 100  mile endurance ride
Terri Buckman

Terri Buckman / Marketing Director

Terri is a lifelong equestrian enthusiast. Riding disciplines have included English Dressage, Cowboy dressage, Endurance Riding and Trail Riding. She is a member and past Vice President of CMDTRA. Terri calls Mt. Diablo her home.

Micki McCabe Walls

Micki McCabe Walls / Advisor to the Board

Micki is the granddaughter of a Livermore rancher who loved going with her grandpa to gather cattle long before the sun came up. She had horses growing up until college, then rekindled her love of riding 20+ years ago. In place of gathering cattle, she now loves to trail ride and horse camp with family and friends. She has been a member of CMDTRA for 20 years and is a CMDTRA board member. 

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