If a discharger has the potential to introduce pollutants into the City's storm water drainage system or is exceeding EPA Parameter Benchmark Values, the City may require the installation of appropriate storm water treatment equipment or devices. These devices shall reduce pollutant constituents to the degree of reduction attainable through the application of the best management practices to the maximum extent practicable. Any required treatment equipment or devices shall be provided, operated, and maintained at the expense of the discharger. Detailed plans showing the treatment device and operating procedures shall be submitted to the City for review, and shall be acceptable to the City before construction or installation of the equipment. The review and approval of such plans and operating procedures will in no way relieve the discharger from the responsibility of modifying the facility as necessary to treat storm water runoff or prevent the introduction of storm water pollutants to comply with this chapter.