(a) Grease Interceptors shall be installed by Users as required by the Village Administrator. Grease Interceptors shall be installed at the User’s expense, when such User operates a restaurant, school, deli, meat market, grocery store, bakery, entertainment club, catering faculty, church and fraternal organizations, or when deemed necessary by the Village Administrator for the proper handling of liquid wastes containing Grease or any other substance deemed harmful to the sewer system.
(b) All Grease Interceptors shall be of a type, design, and capacity approved by the Village Administrator and shall be readily and easily accessible for User cleaning and Village inspection. The sizing of grease traps will be based on the number of meals served in a single day, (EPA 1 Procedure)1 or the number of seats (EPA 2 Procedure)2 or other methods approved by the Village Administrator. All such Grease Interceptors shall be serviced and emptied of accumulated waste content as required in order to maintain minimum design capability or effective volume of the Grease Interceptor, but not less often than once every other month or more often, as determined by the Village Administrator. Inside interceptors shall be cleaned a minimum of once every fourteen days. Users who are required to, based on solids, pass water through a Grease Interceptor shall:
(1) Provide for a minimum hydraulic retention time of twenty-four (24) minutes at actual peak flow or 12 minutes at the calculated theoretical peak flow rate as predicted by the Uniform Plumbing Code fixture criteria, between the influent and effluent baffles with twenty (20) percent of the total volume of the Grease Interceptor being allowed for sludge to settle and accumulate, identified hereafter as a “sludge pocket”.
(2) Remove any accumulated Grease cap and sludge pocket as required, but at intervals of not longer than every other month at the Users expense. Grease Interceptors shall be kept free of inorganic solid materials such as grit, rocks, gravel, sand, eating utensils, cigarettes, shells, towels, rags, etc., which could settle into this pocket and thereby reduce the effective volume of the Grease Interceptor.
(3) Accept the following conditions: If any skimmed or pumped wastes or other materials removed from Grease Interceptor are treated in any fashion onsite and reintroduced back into the Grease Interceptor as an activity of and after said onsite treatment, the User shall be responsible for the attainment of established Grease numerical limit consistent with and contained in (C1) on all discharges of wastewater from said Grease Interceptor into the Village of LaGrange sanitary sewer collection and treatment system.
(4) Operate the Grease Interceptor in a manner so as to maintain said device such that attainment to the grease limit is consistently achieved. “Consistent” shall mean any wastewater sample taken from said Grease Interceptor shall be subject to terms of numercial limit attainment described in (C1). If legitimate space constraints (as determined by the Village Administrator) exist that prohibit the sewer user from installing a Grease Interceptor, a Conditional Use Permit Application requesting variance to said ordinance may be submitted.
(5) Understand and agree that: the use of biological additives as a Grease degradation agent is conditionally permissible, upon approval by the Village Administrator. Any establishment using this method of Grease abatement shall maintain the trap or interceptor in such a manner that attainment of the Grease wastewater discharge limit, as measured from the trap’s outlet, is consistently achieved.
(6) Understand and agree that: The use of automatic Grease removal systems is conditionally permissible, upon prior written approval by the Village Administrator, the Building Inspector of the Village of LaGrange and the Lorain County Department of Health. Any establishment using this equipment shall operate the system in such a manner that attainment of the Grease wastewater discharge limit, as measured from the unit’s outlet, is consistently achieved.
(7) Understand and agree that: The Village Administrator reserves the right to make determinations of Grease Interceptor adequacy and need, based on review of all relevant information regarding Grease Interceptor performance, facility site and building plan review and to require repairs to, or modification or replacement of such traps.
(c) Users shall maintain and provide a written record of trap maintenance to the Village Administrator immediately after pumping. All records so maintained shall be kept by the User for a period of not less than three (3) years from the date of its making.
(d) No non-grease-laden sources are allowed to be connected to sewer lines intended for Grease Interceptor Service.
(e) Should an obstruction of a Village Sewer main(s) occur that causes a sewer overflow to the extent that an impact on the environment is realized and that said overflow or failure of the sanitary sewer collection system to convey sewage can be attributed in part or in whole to an accumulation of Grease in the Village’s sewer main(s), the Village of LaGrange will take appropriate enforcement actions, against the generator or contributor of such grease including but not limited to injunction and/or an action for damages caused by such overflow.
(f) Access manholes shall be provided over each chamber and sanitary tee. The access manholes shall extend at least to finished grade and be designed and maintained to prevent water flow or infiltration. The manholes shall also have readily removable covers to facilitate inspection, Grease removal, and wastewater sampling activities.
(Ord. 2004-2051. Passed 9-23-04.)
1 EPA 1 Procedure Formula (# of meals X (4.5) X kitchen loading - KL = trap volume (gal)
Kitchen Loading KL
Food Grinder & Dishwasher 2.50
Without Food Grinder 2.00
Without Dishwasher 1.50
Without Food Grinder & DW 1.00
Example: 200 meals/day facility with food grinder and dishwasher, 200x(4.5)x 2.5=2250 gal interceptor.
2 EPA 2 Procedure Formula (#of seats)X(storage factor-SF)X ½ ½ # of hours open = trap volume (gal)
Storage Factor SF
0-8 hours/day 1
8-16 hours/day 2
16-24 hours/day 3
Example: 50 seat restaurant open 12 hours/day (50)x(2)X ½ (12) = 600 gal interceptor - 750 gal min.