There is hereby established in all counties adopting the provisions of this act a county law enforcement department, which shall be composed of a director, assistant director and such other officers and personnel as the agency shall provide by resolution. Such department shall be under the exclusive supervision and control of the director and no member of the agency shall interfere by individual action with the operation of the department or the conduct of any of the officers or other personnel of such department. The director shall be responsible to the agency for the operation and administration of the department and for the enforcement of law and providing of police protection within the county in conformance with rules and regulations adopted by such agency. The director shall designate and appoint an assistant director who shall serve in such capacity at the pleasure of the director.

Upon request of the director of a county law enforcement department, the county or district attorney of the county in which such department is established shall give legal opinions, advice and assistance to such department upon all matters in which the department is interested or which relate to the powers or duties of the department or any officer or employee thereof.