She was a member of the Legislative Assembly of Alberta, representing the constituency of Banff-Cochrane as a Progressive Conservative.
In addition, she was the director of Jubilee Insurance and a board member of the Alberta Educational Technology and Research Foundation.
Tarchuk was first elected on March 11, 1997, and served four terms as the Member of the Legislative Assembly for Banff-Cochrane.
Currently Tarchuk is Chair of the Standing Committee on the Alberta Heritage Savings Trust Fund.
As a resident of the Bow Valley for over 30 years, her personal interests include skiing, hiking, reading and the many local cultural opportunities.