All structures to be erected or placed on the access area shall be approved as to design by the chief engineer or the assistant chief engineer of the board, and shall be located, erected, constructed and maintained in accordance with the directions and approval of said chief engineer or the assistant chief engineer; no other structure or structures shall be erected or placed on the access area.
N.Y. Comp. Codes R. & Regs. Tit. 6 § 606.41