(A) The City Engineer will adopt and maintain stormwater treatment standards to implement and interpret the provisions of this title. The 2012 edition of the Mid-America Regional Council and American Public Works Association Manual of Best Management Practices for Stormwater Quality (MARC BMP Manual), and all appendices, is the basis of these stormwater treatment standards. The stormwater treatment standards will include any additional technical guidance or exceptions to the MARC BMP Manual which have been adopted by the City Engineer. The additional guidance or exceptions may include, but not be limited to, modified BMPs, design criteria, construction specifications, or standard details. Copies of all adopted standards will be available in the City’s Public Works Department.

(B) Minimum Control Requirements. All stormwater treatment facilities must be designed to provide pollutant removal that satisfies the level of service and value rating calculations set forth in the stormwater treatment standards and other requirements established by City-approved watershed management plans or studies.

(C) Nonstructural Stormwater Practices. Nonstructural stormwater treatment practices are encouraged to minimize the reliance on structural practices. Applicants wishing to obtain credit for using nonstructural practices must ensure that these practices are documented and will remain unaltered by subsequent property owners by locating the facility in a conservation easement, separate tract dedicated for stormwater treatment facilities or similar instrument as approved by the City Engineer. (Ord. 22-52 § 13, 2022; Ord. 16-13 § 7, 2016; Ord. 09-25 § 2, 2009.)