Any such improvements must be approved prior to the issuance of a permit by the village engineer on the basis of inspection of plans and on site inspection by the village. The village engineer shall approve those applications which, in his judgment, will result in a drainage flow at least as large as that handled by the existing unobstructed storm ditch at each particular site. Any improvement which is substantially identical to the proposed drainage facility plan attached to the ordinance codified herein, marked as exhibit B and by reference made a part hereof, will be presumed to be adequate, subject to on site inspections and approval of the plans by the village engineer. (Ord. 75-10, 3-24-1975)