(a) For areas not covered by a release rate map from an approved Act 167, Storm Water Management Plan: post-development discharge rates shall not exceed the predevelopment discharge rates for the one-, two-, five-, ten-, 25-, 50- and 100-year, 24-hour, storm events. If it is shown that the peak rates of discharge indicated by the post-development analysis are less than or equal to the peak rates of discharge indicated by the pre-development analysis for one-, two-, five-, ten-, 25-, 50- and 100-year, 24-hour storms, then the requirements of this section have been met. Otherwise, the applicant shall provide additional controls as necessary to satisfy the peak rate of discharge requirement.
(b) For areas covered by a release rate map from an approved Act 167 Storm water Management Plan: for the one-, two-, five-, ten-, 25-, 50- and 100-year, 24-hour storm events, the post-development peak discharge rates will follow the applicable approved release rate maps. For any areas not shown on the release rate maps, the post-development discharge rates shall not exceed the predevelopment discharge rates.
(Ord. 6211, approved 4-15-2012; Ord. 6481, approved 3-14-2024)