The governing body of the district shall consist of one supervisor from each of the counties within the district, but in no event less than five, appointed as provided in this article. The supervisors shall be persons who are by training and experience qualified to perform the specialized skilled service which will be required of them in the performance of their duties under this article. The supervisors shall designate a chairman and may, from time to time, change such designation. Each supervisor shall be appointed for a term of three years except that of those supervisors who are first appointed, two shall be designated to serve for one year, two for two years and the remaining number for three years: provided, that in existing districts such appointments for one, two and three year terms will be made at the expiration of the terms of the present supervisors and thereafter appointments will be made for the regular three-year term. A supervisor shall hold office until his successor has been appointed and has qualified. Vacancies for an unexpired term shall be filled by appointment. A majority of the supervisors shall constitute a quorum, and the concurrence of a majority in any matter within their duties shall be required for its determination. A supervisor shall receive no compensation for his services, but he shall be entitled to expenses, including traveling expenses, necessarily incurred in the discharge of his duties. The supervisors may utilize the services of the county agricultural agents and the facilities of the county agricultural agents' offices insofar as practicable and feasible and may, subject to the approval of the state committee, employ such additional employees and agents, permanent and temporary, as they may require and determine their qualifications, duties and compensation. The supervisors may delegate to their chairman, to one or more supervisors or to one or more agents or employees such powers and duties as they may deem proper. The supervisors shall furnish to the State Soil and Water Conservation Committee, upon request, copies of such ordinances, rules, regulations, orders, contracts, forms and other documents as they shall adopt or employ and such other information concerning their activities as it may require in the performance of its duties under this article. The supervisors shall provide for the execution of surety bonds for all employees and officers who shall be entrusted with funds or property, shall provide for the keeping of a full and accurate record of all proceedings and of all resolutions, regulations and orders issued or adopted and shall provide for an annual audit of the accounts of receipts and disbursements. Any supervisor may be removed by the State Soil and Water Conservation Committee upon notice and hearing for neglect of duty or malfeasance in office, but for no other reason. The supervisors may invite the legislative body of any municipality or county located near the territory comprised within the district to designate a representative to advise and consult with the supervisors of the district on all questions of programs and policy which may affect the property, water supply or other interests of such municipality or county.