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(A) Installation requirements for new food service facilities. All proposed or newly remodeled food service facilities inside the city's wastewater service area shall be required to install an approved, properly operated and maintained grease interceptor.
(B) Phased implementation plan for existing food service facilities. All existing food service facilities inside the city's wastewater service area are expected to conduct their operations in such a manner that grease is captured on the user's premises and then properly disposed of. Existing food service facilities will typically be handled under the city's grease control program.
(1) The city will periodically inspect each food service facility annually or on an as-needed basis to assure that each facility is complying with the intent of the grease control program. The city's goal is to achieve compliance by all existing food service facilities by 1-1-2007.
(2) Through preventive maintenance records or emergency calls related to grease, the city will identify and target "grease problem areas" in the waste waster collection system. Food service facilities located upstream of these problem areas and discharge their waste water into the "problem" lines will be identified as potential contributors to the grease build-up. The city inspects the grease interceptors of all food service facilities in the vicinity of the problem area, making note of maintenance records, sizing and condition.
(3) Each food service facility in the vicinity of the problem area will be inspected. The facilities' grease control practices and the adequacy of their grease control interceptor/equipment will be assessed. Maintenance records will also be reviewed.
(4) Following the inspections, the city will send written notice to the inspected food service facilities, containing an educational brochure on grease in the sewer system, a summary of the policy requirements, and results of the inspection. The inspection will typically result in one of the following actions.
(a) Facilities equipped with an appropriate and adequately-sized grease interceptor who are meeting the intent of the grease control program through effective grease control practices will be commended for their compliance.
(b) Facilities may be required to develop and submit to the city a proposed plan designed to achieve compliance through improved housekeeping and increased maintenance and pumping on the existing grease interceptor/equipment.
(c) Facilities that are not successful in achieving compliance with the intent of the grease control program through improved housekeeping and increased maintenance and pumping on the existing grease interceptor/equipment will be required to install the necessary interceptor/equipment to bring the facility into compliance. An appropriate amount of time will be agreed upon between the city and the customer.
(C) Prohibited discharges. Black water shall not be discharged to the grease interceptor unless specifically approved, in writing, by the city.
(D) Floor drains. Only floor drains which discharge or have the potential to discharge grease shall be connected to a grease interceptor.
(E) Garbage grinders and dishwashers. The city recommends that solid food waste products be disposed of through normal solid waste/garbage disposal procedures. The use of garbage grinders which discharge to the sanitary sewer is discouraged within the city wastewater service area, but in the event that the device is used in a commercial or industrial facility, it must be connected to the grease interceptor. The use of a garbage grinder decreases the operational capacity of the grease interceptor and will require an increased pumping frequency to ensure continuous and effective operation. Commercial dishwasher connections must be connected to the grease interceptor. Food particles from garbage grinders take up storage capacity in the grease interceptor and will require that the interceptor be pumped more frequently. Dishwashers discharge hot water and soap, which can melt grease stored in an overburdened interceptor. Melted grease may then pass through the interceptor into the customer's service line and the public sewer system, where the grease hardens and causes line clogs.
(1) Although not recommended, existing food service facilities may allow any fixtures to remain connected to a grease interceptor, except fixtures which may discharge black water.
(2) Proposed and remodeled food service facilities may not connect janitor sinks or black water fixtures to a grease interceptor.
(1) Each grease trap and grease interceptor shall be installed and connected so that it is easily accessible for inspection, cleaning and removal of the intercepted grease at any time. A grease interceptor may not be installed in any part of a building unless approved in writing by the city.
(2) Location of grease interceptors shall meet the approval of the city. The best location is in an area outside of an outside wall, but upstream from the black water drain line(s).