Except as provided in subsection (d)(1) of this section, a board consists of 10 members. The county commissioners, the county council of the county, or, subject to the confirmation of the Frederick County Council, the County Executive of Frederick County shall appoint the initial members of the board for the following terms: three members for 3 years; three members for 2 years; and three members for 1 year. The county commissioners, the county council, or, subject to the confirmation of the Frederick County Council, the County Executive of Frederick County shall appoint one of its members to be an ex officio member of the board. Each member of the board shall be a resident of the county. Except as provided in subsections (c) and (d)(3) of this section, a successor member shall be elected by a majority vote of the board for: a term of 3 years if a term expires; or the rest of the term if a term is vacated. Subject to the confirmation of the Frederick County Council, the Chief Executive of Frederick County shall appoint a successor member for: a term of 3 years if a term expires; or the rest of the term if a term is vacated. In St. Mary’s County, the board consists of at least 10 but not more than 15 members. Subject to paragraph (1) of this subsection, the County Commissioners of St. Mary’s County may create new positions on the board. The county commissioners shall set the term for each new position to: 3 years or less; and ensure balanced staggering of the expiration of the terms of all members. The county commissioners shall appoint a successor member for: a term of 3 years if a term expires; or the rest of the term if a term is vacated.