(A) Federal pretreatment standards promulgated by the U.S. Environmental Protection Agency (EPA) pursuant to the Act shall be met by all users which are subject to the standards in any instance where they are more stringent than the limitations in this subchapter unless the city has applied for, and obtained from, the MPCA approval to modify the specific limits in the federal pretreatment standards. When requested, an application for modification of the federal pretreatment standards will be considered for submittal when the city's wastewater system achieves consistent removal of the pollutants.
(B) State requirements and limitations on discharges shall be met by all users which are subject to the standards in any instance in which they are more stringent than federal requirements and limitations or those in this subchapter.
(C) (1) The city reserves the right to establishment by ordinance more stringent limitations or requirements on discharges to the wastewater disposal system if deemed necessary to comply with the objectives presented herein.
(2) The user shall be notified of any proposed changes at least 90 days before establishment of a change in this subchapter.
(D) No user shall increase the use of process water or, in any way, attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained herein, contained in the federal pretreatment standards, or contained in any state requirements.
(E) (1) Each user shall provide protection from accidental discharge of prohibited materials or other substances regulated by this subchapter. Where necessary, facilities to prevent accidental discharge of prohibited materials shall be provided and maintained at the owner or user's own cost and expense.
(2) Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the Engineer for review, and shall be approved by the Engineer before construction of the facilities. Review and approval of the plans and operating procedures shall not relieve the industrial user from the responsibility to modify the user's facility as necessary to meet the requirements of this subchapter.
(`86 Code, § 3.30)