Improvement plans shall be prepared on sheets not to exceed 24 inches by 36 inches and shall contain the following information:
(A) Title page, which shall include a vicinity map;
(B) North arrow and scale;
(C) Title block showing name and address of the subdivider and engineering firm, as well as the licensed professional engineer’s seal;
(D) One or more benchmarks, in or near the subdivision, to which the subdivision is referenced;
(E) List of the standards and specifications followed, citing volume, section page or other references;
(F) Grading plans showing finished grades;
(G) Plans and profiles shall be drawn at a scale not less than one inch equals 100 feet horizontal; and one inch equals ten feet vertical. All dimensions shall be to the nearest one hundredth of a foot and angles to the nearest second;
(H) Plans, profiles and cross section of streets showing right-of-way and surface widths, elevation, paving details, grades, names, curb and gutter, catch basins, sidewalks and any other improvements to be constructed or placed within the street right-of-way;
(I) Plan of any water supply system, serving more that one property, showing location, pipe sizes, pump stations (size, capacity and type), hydrant and valve location. If a private water supply system, serving more than one property, is proposed, then all information required either by the Illinois Environmental Protection Agency for supplies with ten or more connections or by the County Health Department for supplies with less than ten connections shall be submitted with the improvements plans;
(J) Plan of any sewage disposal system serving more than one property, showing pipe locations, sizes, force mains, invert elevations, slope, manhole locations, lift stations (size, capacity and type) and points of discharge. If area is subject to flooding or inundation, any additional provisions shall be shown (such as, anchoring, special pipe, ground water information, and the like). If a private sewage system is proposed that serves more than one property, then all information required by the Illinois Environmental Protection Agency or local health agency shall be submitted with the Improvement Plans (such as, treatment proposed, size, type, capacity, locations, outfall points, and the like);
(K) Plan of drainage systems, including watershed outlines with drainage computations, retention basins showing drainage areas, locations of storm sewers, corrugated metal pipe type culverts (sizes and type), drainage channels, swales, indicating slopes, pipe sizes, invert elevations, underground drains, outlet locations and velocity reduction techniques; and
(L) Clearances from all applicable federal and state agencies, such as, Corp of Engineers, Environmental Protection Agency and the like.
(Ord. 0-2005.4, passed 11-8-2005)