The sloping grade from any building shall cause the surface water run-off to flow away from such building. The sloping grade shall have a fall of at least six inches in the first ten feet to twenty-five feet from the building grade as established and/or approved by the Township Engineer, thereafter there shall be a sloping grade of at least one percent (i.e. a rate of one foot per 100 feet) and no more than a seven percent slope. The foregoing minimum requirements shall be subject to modification, and slope requirements otherwise shall be determined by existing elevation at the sidelots, including, if necessary, "stepping" the brick ledge of the proposed building to match existing side-lot elevations. In all cases the ultimate determination of drainage, slope and grade pursuant to the foregoing shall be established by the Township Engineer. Unless otherwise established by the Township Engineer, the outside grade shall be not less than twelve inches above the highest elevation of the public sidewalk adjoining the site and not less than eighteen inches above the highest elevation of the top of the curb for adjoining streets (or its center line if no curb exists). Unless otherwise established by the Township Engineer, the outside grade shall not be more than twenty-four inches above the highest elevation of the public sidewalk adjoining the site and no more than six inches above the outside grade for any existing principal structure on any adjoining lots.
(Ord. 290-A-1. Passed 7-26-93; Ord. 319. Passed 12-22-97.)