Tenn. Code Ann. § 69-7-309

From time to time, the commissioner may appoint a technical advisory committee that shall advise the commissioner on matters related to the state's water resources. The commissioner may determine the identity and number of committee members and the term during which the committee will operate. The committee may be composed of representatives of federal, state, and local agencies with relevant authority and representatives of appropriate private organizations, including not-for-profit organizations. No member of the committee is entitled to a salary for duties performed as a member of the committee. No member is entitled to reimbursement for travel or other necessary expenses incurred in the performance of the member's official duties.