(A) A grease trap or grease interceptor meeting the specifications in accordance with the State Uniform Plumbing Code and the District shall be installed in all food handling establishments. These establishments shall include restaurants, cafés, lunch counters, cafeterias, bars, clubs, hotels, hospitals, sanitariums, factories, churches, retirement homes, school kitchens or any other establishment where fats, oils or grease (FOG) may be introduced into the sanitary sewer, except that the traps or retainers shall not be required for private living quarters or dwelling units. In locations where grease traps or interceptors are required, at no time shall the fats, oils or grease, whether emulsified or not, be discharged at a concentration greater than 100 mg/l nor may the discharge contain substances which may solidify or become viscous at temperatures between 32°F and 150°F.
(B) Traps and interceptors must be located so as to provide easy access for routine inspection, cleaning, repair and maintenance. All traps and interceptors shall be maintained by any person owning or controlling the property upon which a grease trap or interceptor is installed. The trap or interceptor shall be in continuously efficient operation at all times.
(C) The owner or operator of the trap or interceptor shall perform system maintenance as required to maintain minimum design capability or effective volume. This maintenance shall include the emptying of accumulated waste content. The owner or operator shall develop and carry out this maintenance at a minimum of every six months. This maintenance shall occur at a frequency shorter than every six months if it is needed to maintain minimum design capability or effective volume. Users shall:
(1) Provide a minimum hydraulic retention time in accordance with engineering guidelines, District standards and plumbing code;
(2) Remove accumulated sludge, grease and organic material as required;
(3) Remove inorganic solid materials such as grit, rocks, gravel, sand, eating utensils, cigarettes, towels, rags and the like, which could settle and thereby reduce the effective volume of the device;
(4) Inspect grease traps or interceptors no less than once every month; and
(5) Maintenance and inspection records shall be kept and posted at the facility. These records shall be maintained for three years and must be available for inspection on the premises.
(D) The District shall have the right to inspect the grease traps and interceptors along with the maintenance and inspection records of any facility who operates or maintains such devices. These inspections may be done at regular intervals or anytime as deemed necessary by the Director.
(E) If the flow into an existing grease trap or interceptor is more than the design capacity of the device, the owner or operator shall install a device that has sufficient capacity according to State Uniform Plumbing Code and District guidelines. It shall be the responsibility of the owner or operator to use an adequately sized device at all times.
(Prior Code, § 50.48)