In the selection of a drainage plan for a development, the applicant shall choose a strategy which strives to minimize the increase in runoff volumes and rates from the site. The applicant shall observe the following hierarchy in developing a drainage plan:
(A) Minimization of impervious surfaces on the property;
(B) Flow attenuation by use of open vegetated swales and retention of natural depressions, or construction of new ones, in conjunction with retention of existing natural stream channels;
(C) Infiltration of stormwater runoff on-site;
(D) Stormwater retention structures;
(E) Stormwater detention structures;
(F) Storm sewers.
At all times the applicant shall keep in mind ground water quality and public safety and convenience in the selection of drainage plan elements.
(Ord. 05-2528, passed 7-26-05)