The administrative officer shall be responsible to the board through the president except as specified below. He shall be responsible for the efficient administration of the county's government. He shall:
a. Prepare and submit directly to the board for its consideration and adoption an annual operating budget and a capital budget, establish the schedules and procedures to be followed by all county departments, offices and agencies in connection therewith, and supervise and administer all phases of the budgetary process;
b. Supervise the collection of revenues, and he shall audit and control disbursements and expenditures and shall prepare a complete account of all expenditures;
c. Supervise the care and custody of all county property, institutions and agencies;
d. Organize the work of county departments, subject to the administrative code adopted by the board. He shall further review their administration and make recommendations pertaining thereto to the board;
e. Review, analyze and forecast trends of county services and finances and programs of all boards, commissions, agencies and other county bodies, and report and recommend thereon to the board;
f. Develop, install and maintain centralized budgeting, personnel and purchasing procedures as may be authorized by the administrative code;
g. Negotiate contracts for the county subject to board approval and make recommendations concerning the nature and location of county improvements and execute improvements determined by the board;
h. Assure that all terms and conditions, imposed in favor of the county or its inhabitants in any statute, franchise or other contract, are faithfully kept and performed.