In the event there are any inequities that arise because of the nature of certain business, commercial accommodations or units under this article, the director shall have the authority to establish any variances in applying this article to alleviate such inequities. Any requirements for pretreatment to bring materials discharged to a sewer to a condition where they may be handled by the sewage system of the city, shall not be cause for a reduction of the rates and charges outlined herein. (Ord. 2006-02 (part), 2006: Prior code § 4291)