The City reserves the right to enter into special agreements with users setting out special terms under which they may discharge to the POTW. No statement contained in this chapter shall be construed as prohibiting any special agreement or arrangement between the City and any persons or organization whereby an industrial waste of unusual strength or character may be admitted to the wastewater collection and treatment system either before or after pretreatment, provided that there is no impairment of the functioning of the wastewater treatment system by reason of the admission of such wastes, and no extra costs are incurred by the City without recompense by said person or organization. In no case will a special agreement waive compliance with a categorical pretreatment standard or federal pretreatment requirement. However, the user may request a net gross adjustment to a categorical standard in accordance with 40 CFR 403.15. They may also request a variance from the categorical pretreatment standard from the approval authority in accordance with 40 CFR 403.13. (Ord. 543, 5-5-2009; amd. Ord. 2021-621, 9-2-2021)