A. A storm water management concept plan shall be required with all permit applications and will include sufficient information to evaluate the environmental characteristics of the project site, the potential impacts of all proposed development of the site, both present and future, on the water resources, and the effectiveness and acceptability of the measures proposed for managing storm water generated at the project site. This plan shall be prepared in accordance with a checklist provided by the city engineer.

B. For development or redevelopment occurring on a previously developed site, an applicant shall be required to include within the plan measures for controlling existing storm water runoff discharges from the site. [Code 2000 § 9-3a-12].