In order to gain an understanding of the drainage requirements for a specific project, a developer may submit preliminary drainage plans and calculations, certified by a licensed professional engineer or a licensed land surveyor registered in the state for review by the city. A preliminary drainage approval must be obtained prior to preliminary plat approval for subdivisions. The direction provided by the city during a review is based on preliminary data and shall not be construed as an approval or binding on either party. The following is a general listing of minimum data requirements for the review of preliminary drainage plans:
(A) Two complete sets of plans;
(B) Drainage narrative;
(C) Watershed boundaries with USGS contours or best information possible;
(D) Existing and proposed regulated drains;
(E) Drainage calculations to support narrative:
(1) Existing and proposed run-off;
(2) Existing and proposed curve number;
(3) Existing and proposed time of concentration; and
(4) Upstream and downstream restrictions.
(F) Letter of intent for obtaining any needed consents, off-site easements or right-of-way;
(G) Topographic map of the project with layout; and
(H) Possible advance payment of the city’s professional fees incurred or to be incurred for the review of the plans.
(Ord. 06-15, passed 11-13-2006; Ord. 2015-01, passed 1-26-2015)