All new class one FSEs shall install grease interceptors in accordance with the City of Denison, Iowa Plumbing Code. All FSEs classes are required to submit the drainage plumbing plans to the pretreatment coordinator or designee for approval prior to construction. Failure to submit plans or construct in accordance with approved plans is a violation of this ordinance. New facilities that are required to maintain a grease interceptor by this or other applicable ordinances, shall install such a unit prior to commencement of discharge to the sanitary sewer.