This subchapter shall apply to all projects whether the stormwater management system or portions thereof will be dedicated to the city or retained privately. After completion of construction of the project and before the release of required performance assurances referenced in § 52B.086, 3 sets of professionally prepared and certified ‘as-built’ plans (record drawings) shall be submitted to the City Building Commissioner for review. The Building Commissioner will deliver 1 copy to the MS4 Coordinator. These as-built plans/record drawings must be prepared and certified by the dngineer of record, i.e., the company/engineer who originally prepared the construction plans. Additionally, a digital copy of the ‘as-built’ plans (record drawings) as well as finalized digital versions of all analyses, models, manuals, and reports that are consistent with the as-built conditions is required in a format acceptable to the city. These plans shall include all pertinent data relevant to the completed storm drainage system and stormwater management facilities, and shall include:
(A) Pipe size and pipe material.
(B) Invert elevations.
(C) Top rim elevations.
(D) Elevation of the emergency overflow (spillway) for ponds.
(E) Grades along the emergency flood routing path(s).
(F) Pipe structure lengths.
(G) BMP types, dimensions, and boundaries/easements.
(H) “As-planted” plans for BMPs, as applicable.
(I) Data and calculations showing detention basin storage volume.
(J) Data and calculations showing BMP treatment capacity.
(K) Certified statement on plans stating the completed storm drainage system and stormwater management facilities substantially comply with construction plans and the stormwater management permit as approved by the city. (See certificate in the Stormwater Technical Standards Manual.)
(L) Visual recordings (via closed circuit television) of such infrastructure, including all subsurface drains, shall be required following the completion of installation of the stormwater management system and submittal of as-builts before release of maintenance bonds. These visual recordings will be paid for by the developer.
(Ord. 10-2024, passed 7-8-2024)