(A) All lots shall be graded to carry surface water to an approved watercourse or storm sewer. Preliminary lot grading shall be completed at the time of street and utility installation to prevent water ponding on undeveloped lots.
(B) Finished ground elevation at building foundation for all structures shall be a minimum of one foot above grade at the sidewalk or front lot line and shall be shown on the site grading plan for each lot. Retaining walls shall be constructed on side or rear lot lines where the grade vanes across lot lines by one foot or more within three feet of side lot line. No foundation for any occupied structure shall be placed at an elevation lower than a 100-year flood reoccurrence elevation.
(C) A grading and drainage plan shall be submitted, showing all existing and proposed storm sewers, manholes, catch basins, watercourses, culverts, and other underground structures within the tract and immediately adjacent thereto, with pipe sizes and grades or waterway openings indicated thereon. Existing and proposed topographic contours to one foot shall be indicated thereon. The plan shall show the method to be used for adequate detention and disposal of all storm sewer water, including drainage outlets, and shall include a typical lot cross section drawn perpendicular to the street indicating lot grading and such other data as may be required by the village’s engineering representative. Rear yard drainage improvements will be required to be provided in the form of yard drain inlets and/or perforated tile installed by the developer. Such plan shall be drawn at a scale not less than 50 feet to the inch.
(Ord. 1235, passed 7-16-2002)