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3.6 Grease Removal System Sizing <br /> A. Trap-style grease removal systems shall be sized in accordance with the standards <br /> in the currently adopted Plumbing Code. <br /> B. The minimum size for an interceptor-style grease removal system shall be <br /> determined using the following table: <br /> Drainage Fixture Units 1 Nominal Interceptor Volume (gallons) <br /> 21 750 <br /> 35 1000 <br /> 90 1250 <br /> 172 1500 <br /> 216 2000 <br /> 307 2500 <br /> 342 3000 <br /> 428 4000 <br /> 576 5000 <br /> 724 6000 <br /> 880 7000 <br /> 1036 8000 <br /> >1036 8000 <br /> Note: <br /> Drainage Fixture Units (as defined in the currently adopted Plumbing Code) for installed <br /> equipment plumbed to kitchen drain lines connected to the Grease Removal <br /> System. <br /> C. In no case shall an interceptor smaller than 750 gallons be installed without prior <br /> approval of the Director. If a garbage disposal/garbage grinder/macerator or <br /> similar unit is installed, the minimum size is 1500 gallons to adequately retain the <br /> added settleable solids loading. <br /> D. The maximum size for an interceptor shall be 4000 gallons. If the calculated <br /> minimum size is larger than this, two interceptors of approximately equal size <br /> shall be installed in series. If the calculated minimum size is larger than 8000 <br /> gallons, two 4000-gallon interceptors shall be installed in series. <br /> 3.7 Flow Controls <br /> All trap-style grease removal systems shall have an internal or external flow control <br /> installed to ensure that wastewater flow through the trap does not exceed the <br /> i 8 <br /> 20 <br />