96.12 INTERCEPTOR CONSTRUCTION REQUIREMENTS.
   Grease interceptors shall be constructed in accordance with the City of Denison, Iowa, Plumbing Code. Notwithstanding, there shall be a minimum of one (1) manhole per ten (10) feet of interceptor length to provide access for cleaning. Manhole covers shall be gastight in construction and have a minimum opening dimension of twenty-four (24) inches. Concrete covers are not acceptable. In areas where traffic may exist, the interceptor shall be designed for the appropriate traffic load. The access manholes shall extend at least to finished grade and be designed and maintained to prevent surface and ground water from entering the grease interceptor.