(A) Prior to initial acceptance of the improvements, the developer or owner shall provide three sets of as-built plans, showing any and all changes from the approved subdivision plat or development plan, to the Director of Public Works and Engineering or authorized designee for review and approval. The as-built plans shall be signed and sealed by a Professional Engineer or Professional Land Surveyor, registered in Illinois.
(B) The approved final engineering drawings shall be used as a basis for the as-built plans. Additionally, the as-built plans shall include an overall utility plan at a scale of one inch equals 100 feet.
(C) As-built plans shall illustrate the horizontal and vertical location of all water mains, sanitary sewers and storm sewers, as well as fire hydrants, valve vaults, manholes, inlets, catch basins and other appurtenances. As-built grading plans shall illustrate surveyed elevation contours for all stormwater storage basins, including normal water level (NWL and high water level (HWL) contours, a stage-storage-discharge table, and all requirements detailed in § 153.50.135(H). All elevations shall be on the NAVD88 datum and the local benchmarks shall be clearly shown and labeled.
(D) After approval by the Director of Public Works and Engineering or authorized designee, the owner or developer shall provide an electronic copy of the as-built plans, containing the computer coordinates for property lines, rights-of-way, water mains, sanitary sewers, storm sewers and other appurtenances in the proposed subdivision or development plan for use in the City of Lockport computer assisted design (CAD) system. The files shall be in AutoCAD drawing format (preferred) or Adobe pdf format (small developments).
(Ord. 18-008, passed 2-7-18; Am. Ord. 21-021, passed 8-18-21)