Designed for the temporary storage of fixtures, furnishings, equipment, or other household goods and materials (also known as PODs). Portable storage containers exclude structures designed for the occupancy by any individual or domestic animal or used as a place of business. When not associated with a valid permit, portable storage containers or temporary dumpsters shall not be parked or stored for more than 15 consecutive days or a total of more than 30 days during any calendar year.