(A) As set forth in § 154.036 of this chapter, runoff calculations shall be required for both the pre- development and post-development conditions of the site.
(B) The following design storms shall be used when calculating runoff.
(1) The pre-development site runoff rate shall be calculated for the two-year, ten-year, 25-year and 100-year storm frequency. The entire acreage contributing to the runoff shall be included in the calculations.
(2) The post-development site runoff rate shall be calculated for the two-year, ten-year, 25-year and 100-year storm frequency. The entire acreage contributing to the runoff shall be included in the calculations.
(Ord. 012-118, passed 10-8-2012)