§ 23

They shall designate from their membership a chairman and may from time to time change such designation. They may delegate to one or more of their members such powers and duties as they shall deem proper. They shall furnish the director and the state commission, upon request copies of such rules, regulations, orders, contracts, forms and other documents as they shall adopt or employ, and such other information as may be required.\nThe supervisors shall provide for the execution of surety bonds for all employees and officers who shall be entrusted with funds or property, for the keeping of records of all proceedings and orders issued or adopted, and for an annual audit of the accounts of receipts and disbursements.\nThe supervisors may invite the governing body of any political subdivision of the commonwealth, or any department, board or commission thereof, to designate a representative to advise and consult with them on questions of programs and policies which may affect the property, water supply, natural resources conservation or other interests of such political subdivision or agency

vise and consult with them on questions of programs and policies which may affect the property, water supply, natural resources conservation or other interests of such political subdivision or agency thereof.