Any property owner wishing to store or place a portable storage container for more than 14 days must, as soon as practicable but in no event prior to the expiration of the 10th day, apply for a permit from the Code Enforcement Officer to maintain the Portable Storage Container on the property for a period not to exceed 30 days. The Code Enforcement Officer may grant such application only upon a showing of substantial need and impracticability of storing the materials contained in the Portable Storage Container either within a permanent structure on the property or off site. In granting any application hereunder, the Code Enforcement Officer may impose such conditions as he or she deems necessary, including conditions that adequately screen such Portable Storage Container from view from the street or neighboring properties.