922.07 FOG PRETREATMENT REQUIRED.
New Food Service Establishments are required to install, operate and maintain an adequately-size grease interceptor (GI) necessary to maintain compliance with the objectives of this Chapter. Requirements for GI's are found in Sections 922.10
through 922.16
of this Chapter. For new FSE's, the grease interceptor shall be adequate to separate and remove FOG contained in wastewater discharges prior to discharge to the sewer system. Fixtures, equipment, and drain lines located in the food preparation and clean-up areas of FSE's that are sources of FOG discharges shall be connected to the grease interceptor. The Department of Public Services has ultimate authority over grease interceptor installation and sizing requirements.
An existing FSE with a grease interceptor is required to operate and maintain its device as specified by this Chapter. An existing FSE without a grease interceptor may be required to install and maintain one at the discretion of the Director of Public Services.
If the installation of a grease interceptor is impossible due to site constraints, a new and/or existing Food Service Establishment may be required to install grease trap(s) in the waste line(s) leading from drains, sinks, and other fixtures or equipment where grease may be introduced into the sewer system in quantities that can cause blockage. Requirements for grease traps are found in Sections 922.10
through 922.16
of this Chapter. The City of Aurora Planning, Zoning & Building Division has ultimate authority over grease trap installation and sizing requirements.
(a) New Construction/Tenant Finish Food Service Establishment. New construction FSE's shall include and install grease interceptors prior to commencing discharges of wastewater to the sewer system, unless otherwise specified by the City of Aurora Planning, Zoning and Building Division. Potential FSE's and tenant-finish FSE's shall provide space and plumbing, segregation for the future installation of one grease interceptor for each tenant space prior to commencing discharges to the sewer system.
(b) Existing Food Service Establishments.
(1) For existing Food Service Establishments, existing grease interceptors shall be properly operated and maintained. Included in proper operation and maintenance is the operation and maintenance of the grease interceptor so that no more than 25% of the capacity of the interceptor is filled with grease and/or solids. At minimum, cleaning of FSE GI shall be done at least every 90 days. Routine servicing and cleaning (at least every 90 days) of the grease interceptor shall include removing and properly disposing of all grease and solids from the interceptors, scraping and cleaning baffles, walls, and side walls, and submitting proper documentation of the same to the WWTP official.
(2) Existing Food Service Establishments with a grease interceptor which have caused or contributed to grease-related blockage(s) in the sewer system, or which have sewer laterals connected to "hot spots", may be required to service and clean their grease interceptor on a modified, more frequent schedule as determined by the WWTP official. Existing FSE's which have been determined to contribute significant FOG to the sewer system by the WWTP official - based on inspection or sampling - may be required to service and clean their grease interceptor on a modified, more frequent schedule as determined by the WWTP official. More frequent GI maintenance may be a requirement for any FSE deemed to have reasonable potential to adversely impact the sewer system.
Should a FSE not comply with the City of Aurora's Department of Public Service's requirement to clean their GI on a more frequent basis, the WWTP Official may issue the FSE a FOG Wastewater Discharge Permit which will specify the modified cleaning and servicing schedule and could include the assessment of surcharge penalties.
(3) Existing Food Service Establishments without a grease interceptor which have caused or contributed to grease-related blockage(s) in the sewer system, or which have sewer laterals connected to "hot spots", may be required to install an appropriately sized grease interceptor. Existing FSE's which have been determined to contribute significant FOG to the sewer system by the WWTP official - based on inspection or sampling - may be required to install an appropriately sized grease interceptor.
Should a FSE not comply with WWTP requirement to install a GI, the WWTP official may issue the FSE a FOG Wastewater Discharge Permit which will specify grease interceptor installation requirements and could include the assessment of surcharge penalties.
(4) Existing Food Service Establishments or Food Service Establishment that undergo remodeling or a change in operations as defined in this Chapter, shall be required to install a grease interceptor.
A Limited Food Preparation Establishment, as defined in this Chapter, may or may not be required to install a grease control device. The City of Aurora will make such determination on a case-by-case basis. (Ord. 2010-184. Passed 2-14-11.)