The board members serving on January 1, 2011, shall continue to serve on the board until successor board members are appointed and qualified. Appointments shall be subject to confirmation by the Senate. Commencing on March 26, 2012, as the term of office of a member serving on the board expires, the member shall continue to serve on the board until a successor board member is appointed and qualified. The Governor shall designate the length of term for each of his or her appointees not to exceed four years. The board shall always be composed of the following members: One member appointed by the Governor shall be a master plumber as defined by this chapter; one member appointed by the Governor shall be a journeyman plumber as defined by this chapter; one member appointed by the Governor shall be a registered professional engineer licensed as such by the State Board of Registration of Professional Engineers and Land Surveyors as provided in Article 2 of Chapter 11 of this title, or any subsequent act relating to the licensing of professional engineers; one member appointed by the Governor shall be a municipal or county building official; one member appointed by the Governor shall be a master gas fitter as defined in this chapter; one member appointed by the Governor shall be a journeyman gas fitter as defined in this chapter; and one member appointed by the Governor shall be appointed from the public at large. The member representing the public at large shall not be engaged or otherwise connected to the plumbing or gas industry or the installation of plumbing or gas work nor connected with any person, firm, or corporation handling or dealing in material, fixtures, or appliances connected with plumbing or gas work. Each member of the board shall be a citizen of this state and the membership of the board shall be inclusive and reflect the racial, gender, geographic, urban/rural, and economic diversity of the state.