Where an interpretation requires discretion, the city planner shall inform the person making the request that an application for code interpretation is required and advise the applicant on how to make the request. At a minimum, an application for code interpretation shall include a letter citing the nature and reasons for the request, and, as required, a city fee. The city planner then shall review relevant background information, including, but not limited to, other relevant code sections and previous city land use decisions, and follow the Type III review and public hearing decision-making procedures.