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(5) The FSE(s) shall install grease interceptors within one hundred eighty (180) <br />days after receipt of official notice to install the interceptor unless the FSE obtains a <br />conditional waiver as discussed below. <br />(d) Conditional waiver of interceptor requirement. The FOG control program <br />manager may provide a written waiver of the requirement to install a grease interceptor, <br />listing the conditions upon which the waiver is granted, upon a finding of one or more of <br />the following conditions set forth in subsections (1), (2), and (3) below: <br />(1) The FSE can substantively demonstrate that it employs an alternative <br />pretreatment technology that is equivalent to or better than a grease interceptor in <br />controlling its FOG discharge. <br />(2) There is no potential for FOG from the FSEs to cause or contribute to SSOs. <br />(3) The FSE discharges of FOG are negligible and do not cause a significant <br />impact to the sewer system. <br />(4) The FSE may use or may be required to install grease traps in lieu of <br />installation of a grease interceptor when: <br />(A) Installation of an interceptor cannot physically be accomplished; <br />(B) There is not adequate slope for gravity flow between kitchen plumbing <br />fixtures and the grease interceptor and/or between the grease interceptor and the private <br />collection lines or the public sewer; and <br />(C) No alternative pretreatment can be installed. Sizing and installation of <br />grease traps shall conform to the current edition of the California Plumbing Code. Grease <br />traps shall be maintained in efficient operating conditions by periodic removal of their full <br />content, including sewage, FOG, floating materials, sludge, and solids. The maintenance <br />frequency for all FSEs with grease traps is specified in FOG Control Program Rules and <br />Regulations. <br />(e) Revocation of waiver. The program manager may revoke a waiver upon a <br />determination of one or more of the following: <br />(1) Quantity of FOG discharge, as measured or as indicated by the size of <br />FSEs based on seating capacity, number of meals served, menu, water usage, amount <br />of on-site consumption of prepared food, and other conditions, has changed since the <br />granting of the waiver such that the FSE is contributing to FOG discharges. <br />(2) Adequacy of implementation and compliance with BMPs. <br />(3) Change in sewer size, grade, and condition based on visual information. <br />Ordinance No. NS -XXX <br />Page 45 of 56 <br />11 A-47 <br />