Within sixty days after July 1, 1991, the Governor shall appoint the member of the board from district 4 to serve for a term of five years. The term of the member serving from district 1 prior to April 11, 1991, shall expire on June 30, 1994. The term of the member serving from district 4 prior to April 11, 1991, shall expire on June 30, 1995, and such member shall represent district 5 after April 11, 1991. The term of the member serving from district 5 prior to April 11, 1991, shall expire on June 30, 1995, and such member shall represent district 7 after April 11, 1991. The term of the member serving from district 6 prior to April 11, 1991, shall expire on June 30, 1991. The term of the member serving from district 7 shall expire on June 30, 1994, and such member shall represent district 6 after April 11, 1991. The term of the member serving from district 3 prior to April 11, 1991, shall expire on June 30, 1992. The term of the member serving from district 2 prior to April 11, 1991, shall expire on June 30, 1993. As the terms of office of the appointees expire, their successors shall be appointed to serve for terms of five years and until their successors are appointed and qualified. Terms of office shall commence on July 1. A member appointed to fill a vacancy, occurring before the expiration of the term of a member separated from the board for any cause, shall be appointed for the remainder of the term of the member whose office has been so vacated in the same manner as his or her predecessor.