The drainage facility shall:
(1) Be capable of accommodating a 25-year rainfall intensity without endangering the public safety and health, or causing significant damage to property;
(2) Be durable;
(3) Be easily maintained;
(4) Be safe to persons and vehicles;
(5) Retard sedimentation;
(6) Retard erosion.
(7) Where necessary, or required by the Board, provide retention/detention storage volume sufficient to accommodate a 100-year storm with a 3-year release rate;
(8) Where necessary, or required by the Board, provide retention/detention outlets designed to allow for no increase in runoff rate. (Ord. No. 92-4, § 23, 2-10-92)