§ 92-17. As-built certification.

An as-built certification for stormwater BMPs must be provided to the city prior to final approval of the development. The certification should include the following:

(1)

A plan view of all detention basins, retention basins, and/or sediment forebays detailing the proposed and final as-built elevation contours. Sufficient spot elevations should be provided on each side of the basin, the bottom of the basin, and along the emergency spillway(s).

(2)

Detention basin, retention basin, and/or sediment forebay calculations along with corresponding volumes associated with the as-built elevations. The proposed volume and final as-built volume should be indicated.

(3)

Final as-built invert elevations for all inlet pipes and all associated outlet structure elevations, riser pipe hole sizes, and number of holes should be included. Invert elevations of the final outlet pipe to the receiving water and elevation of the final overflow structure should also be provided.

(4)

The side slopes of all stormwater basins should be identified and must meet minimum safety requirements.

(5)

The certification should be signed and sealed by a registered professional engineer.

(Ord. No. 2017-17 , 11-6-17)