SEC. 818. There are authorized to be appropriated $2,500,000 for the fiscal year ending June 30, 1965, and $5,000,000 for each of the next four fiscal years to enable the Surgeon General to make grants to the appropriate State agency or agencies designated in accordance with section 604(a) (1) to cover not to exceed 50 per centum of the costs of projects for developing (and from time to time revising) and supervising and assisting in the carrying out of comprehensive regional, metropolitan area, or other local area plans for coordination of existing and planned health facilities, and facilities related thereto, and services provided by such facilities."