Marc and his family have lived in the Hockinson area since 1985. He and his wife, Dawn, have six children and three grandchildren, and they attend Hockinson Community Church. In 1994, Marc led a church youth mission trip to build homes in Mexico, and he conducted farm-method training in Albania for SEND Missions in 1992 and 1993.

Marc is a member of the Clark County Farm Bureau and has served more than 10 years as a local 4H Leader. He has spent more than 20 years as a local youth leader and Sunday school teacher. He is a former member of the Hockinson School District Curriculum Committee and the Future Farmers of America - Clark County Chapter. 

Previously as a legislator and county commissioner, Marc served on the following boards and committees:

Arthur D. Curtis Children's Justice Center
Clark County Board of Health 
Clark County Audit Oversight Committee
Clark County Disability Board
Clark County Fairgrounds
Clark County Finance Committee
Clark County Law and Justice Council
Clark County Law Library Board of Trustees
Clark Transit Agency Board of Directors
Clean Water Commission
Emergency Commissioner
Greater Vancouver Chamber of Commerce
Regional Transportation Council Board-chair
Southwest Washington Work Force Development Council 
Southwest Washington Work Force Development Council Executive Board of Clark County Commissioners
Washington State Association of Counties-Vice President
Southwest Washington Agency on Aging & Disabilities