(A) FSE shall ensure that interceptor(s) are pumped out by a grease waste hauler, removing all water, floatable oil, settled solids and any other visible signs of grease anywhere within the grease interceptor, at a frequency adequate for the proper function of the interceptor and at a minimum of every three months. Any other pumping schedule that is less frequent shall be subject to written approval by the POTW Director.
(B) The cleaning frequency of a grease trap shall be adequate for the proper function of the trap and at a minimum of every one month. Any other pumping schedule that is less frequent shall be subject to written approval by the POTW Director. The trap must have surface grease and oil removed, settled solids removed, all sides scraped, removable parts removed and cleaned, inspected for damage and corrosion, and properly reassembled.
(1) If a grease waste hauler pumps the trap, then all contents must be removed as described in divisions (A) through (H) of this section; except that, it must be done at the frequency indicated in this division (B).
(2) When cleaned by FSE personnel (i.e., surface grease and settled solids have been removed), water in trap may remain in the unit or may be flushed to the sewer. FSE shall be responsible for appropriate disposal of the removed substances. Removed substances shall not be reintroduced to the sewer collection system.
(C) To ensure proper function, grease interceptor/trap shall be cleaned whenever the combined thickness of the floating greases and settled solids is equal to or greater than 25% of the total liquid depth in the interceptor/trap.
(D) No FSE shall allow a grease waste hauler to skim the waste in an interceptor/trap. Both sides of the interceptor/trap shall be cleaned to the bottom at all times as indicated above. Washdown water shall be pumped out as well.
(E) Reintroduction of wastewater (e.g., decanting) removed from a grease interceptor/trap is prohibited, whether it has been treated by the grease waste hauler or not, except as noted in division (B)(2) above.
(F) It is recommended that the FSE be witness to interceptor/trap cleaning.
(G) FSEs shall not use any chemical and/or biological product to remove grease from the grease removal device. (These products move grease into the sewer collection system and defeat the purpose of having interceptor/traps in the first place.)
(H) All needed repairs shall be completed within 30 days of discovery, unless otherwise instructed by the town.
(Ord. passed 6-21-2011; Am. Ord. passed 12-13-2012)