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17 <br /> <br />D. Any FSE or NFD undertaking a Substantial Remodel, as defined herein (Sec. <br />1.3.BG.), will be considered new construction for the purposes of this ordinance. <br />3.2 Existing Users <br /> <br />A. Any existing FSE without a functional GRS shall be required to install one. The <br />type of GRS required will be determined by the Director, taking into account cost, <br />available space and gradient, whether the user is in a grease impact area, and any <br />other pertinent information. Unless otherwise approved by the Director, all kitchen <br />drains and any other drains that may carry grease-laden waste shall be connected to <br />this GRS (except the dishwasher if a hydromechanical trap-style GRS is installed.) <br />If a hydromechanical trap-style GRS is installed, the kitchen may not have a <br />garbage disposal/garbage grinder/macerator or similar unit installed. <br />B. Any existing NFD without a functional GRS may be required to install one. The <br />type of GRS required will be determined by the Director, taking into account cost, <br />available space and gradient, whether the user is in a grease impact area, and any <br />other pertinent information. Unless otherwise approved by the Director, all kitchen <br />drains and any other drains that may carry grease-laden waste shall be connected to <br />this GRS (except the dishwasher if a hydromechanical trap-style GRS is installed.) <br />If a hydromechanical trap-style GRS is installed, the kitchen may not have a <br />garbage disposal/garbage grinder/macerator or similar unit installed. <br />3.3 Grease Removal System Maintenance <br /> <br />A. All grease removal systems shall be maintained to ensure proper operation. At a <br />minimum, interceptor-style GRSs shall be cleaned at least once every 90 days and <br />hydromechanical trap-style GRSs cleaned at least once per week. These required <br />frequencies may be extended with the approval of the Director. Grease Removal <br />Systems must be thoroughly cleaned whenever the combined thickness of the <br />floating greases and settled solids is equal to, or greater than, 25% of the total liquid <br />depth in the GRS. <br />B. When cleaned, an interceptor-style GRS must be completely pumped out, all solids <br />removed, solidified grease scraped or washed from the interior and the structure <br />and all internal plumbing inspected for damage and corrosion. The GRS shall be <br />refilled with water prior to being placed back into operation. If repairs are required, <br />they shall be performed within 7 days, or within the shortest practicable time frame <br />depending on repairs required, and as approved by the Director or designee. <br />C. Hydromechanical trap-style GRSs may be maintained by the FSE or NFD. When <br />cleaned, the trap must have surface grease and oil removed, settled solids removed, <br />all sides scraped, removable parts removed and cleaned, be inspected for damage <br />and corrosion, and be properly reassembled. If the GRS is equal to or greater than <br />25% full, it must be thoroughly cleaned as noted in 3.3.A. If repairs are required,