The Commissioner of Buildings shall not issue any building permit for demolition, excavation or foundation work to be performed above or beneath the High Line or within 25 feet of support structures of the High Line, except by determination by such Commissioner that such work would not adversely affect the structural integrity of the High Line and by determination by the Commissioner of Parks that such work would not adversely affect the City's ability to inspect and maintain as necessary to ensure the structural integrity of the High Line.