1014.1 General.

Where it is determined by the Authority Having Jurisdiction that waste pretreatment is required, an approved type of grease

interceptor(s) shall comply with ASME A112.14.3, ASME A112.14.4, CSA B481, ANSI/CAN/IAPMO Z1001, PDI G-101, or PDI G-102, and sized in accordance with Sections 1014.2.1 and 1014.2.1.1 or Section 1014.3.6, shall be installed in accordance with the manufacturer’s installation instructions to receive the drainage from fixtures or equipment that produce grease-laden waste. Grease-laden waste fixtures shall include, but not be limited to, sinks and drains, such as floor drains, floor sinks, and other fixtures or equipment in serving establishments, such as restaurants, cafes, lunch counters, cafeterias, bars and clubs, hotels, hospitals, sanitariums, factory or school kitchens, or other establishments where grease is introduced into the drainage or sewage system in quantities that can effect line stoppage or hinder sewage treatment or private sewage disposal systems. A combination of hydromechanical, gravity grease interceptors and engineered systems shall be allowed to meet this code and other applicable requirements of the Authority Having Jurisdiction where space or existing physical constraints of existing buildings necessitate such installations. A grease interceptor shall not be required for individual dwelling units or private living quarters. Water closets, urinals, and other plumbing fixtures conveying human waste shall not drain into or through the grease interceptor.

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1014.1.2 Maintenance. Grease interceptors shall be maintained in efficient operating condition by periodic removal of the accumulated grease and latent material. No such collected grease shall be introduced into drainage piping or a public or private sewer. Where the Authority Having Jurisdiction determines that a grease interceptor is not being properly cleaned or maintained, the Authority Having Jurisdiction shall have the authority to mandate the installation of additional equipment or devices. The Authority Having Jurisdiction shall have the authority and to mandate a maintenance program for grease interceptors.

1014.1.3 Food waste disposers and dishwashers.

Unless specifically required or permitted by the Authority Having Jurisdiction, no No food waste disposer or dishwasher shall be connected to or discharge into a grease interceptor. Commercial food waste disposers shall be permitted to discharge directly into the building’s drainage system. Commercial Food Waste Disposal Units are prohibited.

Exception: Food waste disposers shall be permitted to discharge to grease interceptors that are designed to receive the discharge of food waste.

1014.1.4 Wastewater Discharge through Grease Interceptors. Wastewater Discharge through grease interceptors shall be by means of gravity only. Unless otherwise approved by the Authority Having Jurisdiction, mechanical pumping of wastewater through a grease interceptor shall not be allowed. Pumps and/or other mechanical pumping equipment to convey wastewater shall only be installed to convey wastewater after the wastewater has passed through the grease interceptor.

1014.1.5 Two-Way Lateral Cleanouts. Two-way Lateral cleanouts shall be installed on the inlet and outlet sides of grease interceptors for ease of maintenance and flushing of the lateral line(s).

1014.1.6 Acceptable Materials. Grease interceptors made of the following materials shall not be installed in the City: materials susceptible to corrosion in low pH environments, concrete, metal, and acid-resistant enamel or epoxy (A.R.E.) coatings. Examples of acceptable materials of construction include thermoplastic (low or high-density polyethylene) or similar non-corrosive materials.

1014.1.7 Sharing of Grease Interceptors Prohibited. Unless specifically required or permitted by the Authority Having Jurisdiction, a grease interceptor may be used by only one food facility. Sharing grease interceptors between multiple food facilities is prohibited.

(Ord. 5677 § 1 (part), 2025)