(A) Upon any new construction or renovation subsequent to July 1, 2005, all sewer users, including but not limited to all restaurants, cafeterias, hotels, motels, hospitals, nursing homes, schools, grocery stores, prisons, jails, churches, camps, caterers, bakery, butcher shops, and meat or food processors, who discharge fats, oils or greases shall install, maintain and properly operate a grease interceptor whose rated flow equals or exceeds 100 gallons or meets the rate of flow required by EPA 2 Procedure Formula, whichever is greater. If the EPA 2 Procedure Formula calculation requires a grease interceptor in a size greater than 2,000 gallons then multiple interceptors in a series shall be installed for each 2,000 gallons required or part thereof.
(B) All sewer users occupying and utilizing an existing structure, including but not limited to all restaurants, cafeterias, hotels, motels, hospitals, nursing homes, schools, grocery stores, prisons, jails, churches, camps, caterers, bakery, butcher shops, and meat or food processors, who discharge fats, oils or greases shall be required to install on or before January 1, 2006 a grease interceptor which meets or exceeds the requirements for new construction and renovation unless said user at said existing structure either (i) currently meets the requirements stated within paragraph (A) above or (ii) obtains a variance under § 51.017 herein and thereafter installs a grease trap(s) meeting the following trap requirements and also strictly complies with “Best Management Practices” hereinafter set forth within § 51.018:
(1) the minimum size of a grease trap installed on the same floor as the fixture shall have one-half of the liquid holding capacity of the fixture.
(2) A grease trap located on a floor beneath the fixture shall have 60% of the liquid holding capacity of the fixture. To determine the liquid holding capacity in gallons of a plumbing fixture, multiply the length by the width, by the height in inches, and divide by 231.
(3) The grease trap must have a flow restrictor which is fully operational and the grease trap must be fully functional and operating at all times.
(4) Where 2 or more sinks or receptacles are connected to a trap the liquid holding capacity shall be based on the combined volume of the fixture served.
(5) The fact that a grease trap or traps are currently installed at an existing establishment shall not excuse an establishment from meeting the requirements of paragraph (A) if no physical barrier or restraint prevents same.
(C) All cooking establishments subject of the provisions of this Ordinance, whether new construction or renovation or existing structures shall implement and strictly comply with the “Best Management Practices” hereinafter set forth.
(D) Grease interceptors or traps shall be constructed of durable, corrosion resistant materials and shall have watertight covers fastened in place.
(E) No grease interceptor or trap shall receive the discharge from a food waste grinder or disposal.
(F) No grease interceptor or trap shall receive the discharge from a dishwashing machine except as hereinafter provided. No dishwasher shall be discharged into any grease trap nor into any grease interceptor less than 100 gallons in size. In addition, no dishwasher shall be discharged into any grease interceptor 100 gallons or larger, except as may be provided by the State of Illinois Plumbing Code, provided, however, that not-withstanding any other language herein dishwasher may be discharged into any grease interceptor 100 gallons or larger if said grease interceptor shall be separate and apart from all other grease interceptors required by this Ordinance and shall serve and receive discharge only from the dishwasher and no other source. All new construction beginning on the effective date of this Ordinance shall be required to install and provide a separate grease interceptor as provided herein for all dishwashers and, in addition, any user having a dishwasher which experiences a grease or similar blockage or problem within its service line or within an adjoining sewer main shall be required to install and provide a separate grease interceptor as provided herein for all dishwashers.
(G) The flow rate of the interceptor or trap shall be sufficient to handle the maximum demand of the connected system.
(H) Each grease interceptor shall be so installed and connected that it shall be at all times easily accessible for inspection, cleaning and removal of the intercepted grease.
(I) Each interceptor or trap shall be designed and installed with proper venting so that it does not become air bound.
(J) An effluent sampling port shall be provided at the exit pipe for each interceptor so that the interceptor effluent can be sampled prior to combining with other untreated flows. Said sampling port shall be not less than 8” in diameter.
(K) Water-cooled grease interceptors or traps are prohibited.
(L) In areas where additional weight loads may exist the grease interceptor shall be designed to have adequate load bearing capacity.
(M) No water or wastewater in excess of 140° Fahrenheit shall be discharged into any grease trap or interceptor; no discharge effluent shall be greater than 85° Fahrenheit.
(N) No non-grease laden source shall be connected to any interceptor or trap or to any line intended for grease interceptor service.
(Prior Code, Art. 16A, § IIB)