(A) Grease, oil, gasoline and flammable liquid interceptors shall be provided when they are necessary for the proper handling of liquid waste containing grease, oil, gasoline, or other flammable or hazardous materials in excessive amounts and/or as required by state or federal regulations. Section 38-3-29 prohibits toxic, poisonous materials or oils, whether emulsified or not, in excess of 100 mg/1, or containing substances that may solidify or become viscous at temperatures between 32°F and 150°F. The Illinois State Plumbing Code, 77 Illinois Administrative Code § 890.510, contains requirements relative to grease interceptor requirements. When they are more restrictive, the city's grease interceptor (trap) requirements shall take precedence over the Illinois Public Health requirements. In all new construction requiring a grease interceptor, a 250-gallon interceptor shall be installed outside of the building, no closer than five feet from the wall of the building. In instances of remodeling or change of occupancy, the Illinois State Plumbing Code, 77 Illinois Administrative Code § 890.510 shall govern. All interior grease traps shall be Plumbing Drainage Institute approved, with a solid waste interceptor located before the grease trap. Effective January 1, 2014, all grease interceptors must be cleaned out when 25% of the total volume is a combination of grease and solids, but no less than once a year. Documentation of the cleanouts shall be readily available at all times for inspection by both the city and the county health departments.
(B) Gasoline and oil interceptors shall adhere to the requirements of 77 Illinois Administrative Code § 890.520.