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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).

TAC Members

TCTC Executive Director

Darin Grossi

County Administrator

Tracie Riggs

City Administrator (Sonora)

Melissa Eads

Public Works, Supervising Engineer

Blossom Scott-Heim

Public Works, Director

​Kim MacFarlane​

Community Development Director (Sonora)

Tyler Summersett

County Airports Manager


City Engineer


Tuolumne Me-Wuk Tribal Council

Diana Beasley

Caltrans District 10

Gregoria Ponce

California Highway Patrol (CHP)

Lt. Destiny Tafoya

For more information about the Technical Advisory Committee contact:

Denise Bergamaschi

Phone: 209-533-5603


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