1. Requirements. A variance from the grease interceptor requirements may be allowed if it is shown that an alternative pretreatment technology is equally effective in controlling the FOG discharge or, if an FSE demonstrates that it is impossible or impracticable to install a grease interceptor. In determining whether or not to grant a variance, the pretreatment coordinator may consider the following:
A. Whether or not there is adequate space for installation and/or maintenance of a grease interceptor. The FSE must demonstrate that the installation of a grease interceptor is not feasible or advisable.
B. Whether or not the FSE can justify and demonstrate that an alternative pretreatment technology is equivalent or better than a grease interceptor in controlling its FOG discharge.
C. Any request for a variance involving an extension to an installation deadline must be made in writing to the pretreatment coordinator. The written request must include the reasons for the FSE's failure or inability to comply with the compliance date as set forth, the additional time needed to complete the remaining work, and the steps to be taken to avoid future delays.
2. Upon a determination by the pretreatment coordinator that there are sufficient reasons to justify a variance or waiver, the FSE will be relieved to the extent expressly provided for in the variance. A variance shall contain terms and conditions that serve as basis for its issuance. A variance may be revoked at any time if any of the terms and conditions for its issuance are not satisfied or if the conditions upon which the variance was based change to the extent that the justification for the waiver no longer exists. The variance shall be valid so long as the FSE remains in compliance with the terms and conditions specified in the variance.
3. For class one FSEs where the installation of grease interceptors is not feasible and no equivalent alternative pretreatment can be installed, a variance from the requirement of a grease interceptor may be granted along with the imposition of a surcharge based on the increased costs due to accelerated cleaning frequency of the collection system and additional treatment of these wastes. Additional requirements may be imposed to mitigate the discharge of FOG into the sewer system, including the installation and servicing of grease traps.