(A) A drainage plan must be submitted to and approved, in writing, by the Building Inspector prior to the construction of any residence or driveway. All drainage plans must show the lot address, elevations of the lot corners and house first level corners relative to the centerline of the street in the front of the house. Lot drainage must also be indicated on this plan. All drainage must be directed away from the slab at a slope of four inches in ten feet where possible. All foundations must be a minimum of 12 inches above the 100-year flood plain. All lot drainage shall not be harmful, destructive or a nuisance to the adjacent lots. Driveways shall permit the free flow of water in road ditches.
(B) Where possible all drainage shall flow to the street. In some cases gutters may be required on structures, in which case the downspouts and underground drain conduits must be installed so as to direct the flow of runoff toward the streets. Requirements for gutters will be determined at the time of plan approval. Any and all culverts or conduits installed in street ditches shall be of a minimum diameter of 18 inches, must extend the entire width of the driveway or be at least ten feet in length, and must be kept clean. All culverts must end in a concrete headwall with driveway curbs and inlet/outlet flow detectors.
(Ord. 2015-3, passed 5-7-2015)