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(3) SSOs; or <br />(4) The FSE is not implementing or complying with BMPs as listed in the rules <br />and regulations. <br />(5) The FSE(s) shall install grease interceptors within one hundred eighty <br />(180) days after receipt of official notice to install the interceptor unless the FSE obtains <br />a 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 <br />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 <br />private 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. <br />Grease traps shall be maintained in efficient operating conditions by periodic removal of <br />their full content, including sewage, FOG, floating materials, sludge, and solids. The <br />maintenance frequency for all FSEs with grease traps is specified in FOG Control <br />Program Rules and 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 />Ordinance No. NS -2921 <br />Page 46 of 57 <br />