The Director shall oversee the expenditure of state appropriations made available to organizations, whether localities or private entities, for purposes related to the historical collections, historic landmarks, and historic sites of Virginia, to assure that such purposes are consistent with the statewide plan for historic preservation as established by the Director. The Director shall establish and require adherence to sound professional standards of historical, architectural and archaeological research in the planning, preservation, restoration, interpretation and display of such collections, landmarks, and sites.