(A) Whenever deemed necessary, the Superintendent may require 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 wastestreams from industrial wastestreams, and such other conditions as may be necessary to protect the POTW and determine the user's compliance with the requirements of this chapter.
(B) The Superintendent may require any person discharging into the POTW to install and maintain, on their property and at their expense, a suitable storage and flow-control facility to ensure equalization of flow.
(C) Fats, oil, grease, and sand interceptors shall be provided when, in the opinion of the Superintendent, they are necessary for the proper handling of wastewater containing excessive amounts of grease and oil, or sand; except that such interceptors shall not be required for residential users.
(1) All interception units shall be of type and capacity approved by the Superintendent and shall be so located to be easily accessible for cleaning and inspection.
(2) The owner shall be responsible for the proper removal and disposal, by appropriate means of the collected material removed from the fats, oil, grease, and sand interceptors and traps.
(3) The owner shall ensure the interceptors and traps are inspected when pumped to ensure that all fittings and fixtures inside the interceptors are in good condition and functioning properly. The depth of grease inside the tank shall be measured and recorded in a maintenance log during every inspection along with any deficiencies, and the identity of the inspector.
(4) The owner shall determine the frequency at which its fat, oils, grease, and sand interceptor(s) shall be pumped according to the following criteria:
(a) The interceptor shall be cleaned by a subsurface sewage disposal cleaner whenever 25% of the operating depth of the interceptor is occupied by fats, oils, grease, sand and settled solids, or a minimum of once every three months, whichever is more frequent. Cleaning of interceptors shall include the complete removal of all contents, including floating materials, wastewater and settled sludge. Decanting back into the interceptor shall not be permitted. Interceptor cleaning shall include scraping excessive solids form the wall, floors, baffles and all piping.
(b) If the owner can provide data to the Superintendent demonstrating that less frequent cleaning of interceptor will not result in a grease level in excess of 25% of the operating depth of the interceptor, the Superintendent may allow less frequent cleaning. The owner shall provide data including pumping receipts for four consecutive cleanings of the interceptor, complete with a report from the grease trap/interceptor cleaner indicating the grease level at each cleaning, and the interceptor maintenance log.
(c) A maintenance log shall be maintained on the premises, and shall include the following information: date of all activities, volume pumped, grease depth, grease trap/interceptor cleaner's name, location of the waste disposal, means of disposal for all material removed from the interceptor and name of the individual recording the information. The maintenance log and grease trap/interceptor cleaner's receipts shall be made available to the Superintendent for inspection on demand. Interceptor cleaning and inspection records shall be maintained on file a minimum of five years.
(5) Such interceptors shall be maintained continuously in satisfactory and effective operation by the user at their expense.
(D) Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter.
(Ord. 2008-1, passed 1-21-08)