The occupational safety and health management program shall encompass all aspects of the total work environment throughout the District government, and shall include, but not be limited to: (1) Employee safety and health, inclusive of physical welfare at the work site and environmental control of occupational diseases; (2) Fire safety; (3) Motor vehicle safety; (4) Safety of nonemployee users of city facilities and services; (5) Contractor safety; and (6) Protection of District government property.