(A) Whenever deemed necessary, the City Manager may require industrial users to restrict their discharge during peak flow periods, designate that certain wastewater be discharged only into specific sewers, relocate and/or consolidate points of discharge, separate sewage waste streams from industrial wastestreams, and such other conditions as may be necessary to protect the POTW and determine the industrial user’s compliance with the requirements of this chapter.
(B) Each person discharging into the POTW greater than 100,000 gallons per day shall install and maintain, on his property and at his expense, a suitable storage and flow control facility to ensure equalization of flow over a 24-hour period.
(C) Clarifiers shall be provided when, in the opinion of the City Manager, they are necessary for the proper handling of wastewater containing excessive amounts of petroleum oil, non-biodegradable cutting oil, products of mineral oil origin or sand; except that such clarifiers shall not be required for residential users. All clarifiers shall be of type and capacity approved by the City Manager and shall be so located to be easily accessible for cleaning and inspection. Such clarifiers shall be inspected, cleaned, and repaired regularly, as needed, by the owner at his sole expense.
(D) Industrial users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter.
(E) At no time shall any reading on a properly calibrated combustible gas detector at the point of discharge into the POTW, or at any point in the POTW, be more than 20% of the lower explosive limit (LEL) of the meter.
(F) Grease interceptors shall be provided when, in the opinion of the City Manager, they are necessary for the proper handling of wastewater containing excessive amounts of fats, oils and grease that may cause or contribute to lateral or sanitary sewer overflows; except that such grease interceptors shall not be required for residential users. All grease interceptors shall be of type and capacity approved by the City Manager and shall be so located to be easily accessible for cleaning and inspection. Grease interceptors shall be installed in accordance with the provisions of this chapter. Such grease interceptors shall be inspected, cleaned, and repaired regularly, as needed, by the owner at his sole expense.
(1) Users that are required to have a grease interceptor may be required to connect the following fixtures to the grease interceptor, if they are present:
(a) Pot sinks or similar devices, including all compartments of a three compartment sink;
(b) Pre-rinse sinks or similar devices;
(c) Prep sinks or similar devices;
(d) Soup kettles or similar devices;
(e) Wok stations or similar devices;
(f) Drains in areas where floor mats are washed;
(g) Any other fixtures or drains that have a reasonable potential to allow fats, oils and grease to be discharged to the POTW.
(2) Users with food waste disposal units shall connect the unit to a grease interceptor with a minimum capacity of 1,000 gallons or remove the unit.
(3) Users with dishwashers and mop sinks shall connect them directly to the POTW or to a grease interceptor with a minimum capacity of 750 gallons.
(4) Accumulated grease and sediment shall be removed as necessary to prevent lateral or sanitary sewer overflows. At a minimum, single-chamber grease interceptors shall be cleaned in accordance with the manufacturer’s specifications, or when the combined depth of sediment and grease equals or exceeds 25% of the total depth of the sediment, water, and grease. Multiple-chamber grease interceptors shall be cleaned in accordance with the manufacturer’s specifications, or when the combined depth of sediment and grease in the final chamber equals or exceeds 25% of the total depth of the sediment, water, and grease in that chamber.
(5) Grease interceptors shall be kept free of non-food waste including, but not limited to grit, rocks, gravel, eating utensils, cigarettes, trash, towels, and rags.
(6) The addition of chemicals, enzymes, emulsifiers, live bacteria or other grease cutters or additives used for purposes of grease reduction in the grease interceptor is prohibited.
(7) If the City Manager determines that a grease interceptor is not being adequately maintained, a correction notice may be issued requiring the deficiency be corrected within seven, 14, or 30 days. Maintenance programs, including BMPs and defined cleaning frequencies, may be mandated. Users that fail to adhere to a maintenance program may be required to install additional pretreatment devices.
(‘63 Code, § 5-5.302) (Ord. 571-C.S., passed 6-2-94; Am. Ord. 775-C.S., passed 12-20-11) Penalty, see § 50.999