Technical Advisory Committee (TAC)

The Technical Advisory Committee (TAC) is the clearinghouse and technical review body for all items to be considered by the Tuolumne County Transportation Council (TCTC).  The TAC is advisory to the TCTC on all matters relating to regional transportation planning including, but not limited to, the development of the Regional Transportation Plan (RTP), Regional Transportation Transportation Improvement Program (RTIP) and annual Overall Work Program (OWP).


Unless otherwise specified by the TCTC Executive Director, TAC meetings are held the first Wednesday of each month, one week prior to scheduled TCTC meetings.


TCTC Executive Director

Darin Grossi

County Administrator

Tracie Riggs

City Administrator (Sonora)

Melissa Eads

Public Works, Director

​Kim MacFarlane​

Community Development Director (Sonora)

Rachelle Kellogg

County Airports Manager

Benedict Stuth

City Engineer


Tuolumne Me-Wuk Tribal Council

Diana Beasley

Caltrans District 10

Michael Casas

California Highway Patrol (CHP)

Lt. Destiny Tafoya

Public Works, Supervising Engineer

Blossom Scott-Heim