The departmental estimates for capital projects and the executive capital budget shall consist of a detailed estimate of all capital projects pending or which the agency head, for departmental estimates, or the mayor, for the executive budget, believes should be undertaken within the ensuing fiscal year and the three succeeding fiscal years. Each agency head, for departmental estimates, and the mayor, for the executive budget, shall submit a written response to each of the capital budget priorities included in the community board's statement of budget priorities submitted in accordance with section two hundred thirty. Such responses shall include the response of the agency head and the mayor, as appropriate, regarding the disposition of each such priority and meaningful explanations of any disapprovals contained in such estimates or budget.