(A) The Board is authorized to establish local limits, by ordinance, order, in wastewater discharge permits, in other control documents, or in other notice to the user, pursuant to 40 CFR 403.5(c). The local limits allocation for a given pollutant shall not exceed the most recent calculated maximum allowable industrial loading for that pollutant. Local limits may be allocated to any user whose discharge exceeds or has the potential to exceed the most recent calculated domestic background concentrations.
(B) Local limits apply at the point where the wastewater is discharged to the POTW or as specified in the SIU wastewater discharge permit or other control document. All concentrations for metallic substances are for total metal unless indicated otherwise. The Board may impose mass or concentration-based limitations.
(C) The Board may develop Best Management Practices (BMPs) for any SIU or other user, as needed, to implement this chapter. BMPs may be implemented through a wastewater discharge permit, other control document, order, or other notice to the user. BMPs are pretreatment standards and enforceable under this chapter.
(Ord. 9-2016, passed 6-7-2016)