Section 70. The committee may grant permission in writing for the temporary occupation of any street or land ves

70. The committee may grant permission in writing for the temporary occupation of any street or land vested in it for the purpose of depositing any building materials or making any temporary excavation therein or erection thereon, subject to such conditions as it may prescribe for the safety or convenience of persons passing by or dwelling or working in the neighbourhood, and may charge fees for such permission, and may at its discretion withdraw the permission.