Upon approval of the preliminary drainage plans by the town, final drainage plans shall be submitted to the town. The final plans shall provide or be accompanied by calculations, maps and/or other descriptive material showing the following:
(A) The extent and area of each watershed tributary to the drainage facilities in the development.
(B) The street storm sewers and other storm drains to be built, the basis of their design, outfall and outlet locations and elevations, the receiving stream or channel and its high water elevation, and the functioning of the drains during high water conditions.
(C) The parts of the proposed street system where pavements are planned to be depressed sufficiently to convey or temporarily store overflow from storm sewers and over the curb runoff resulting from the heavier rainstorms and the outlets for such overflow.
(D) Existing streams and floodplains to be maintained, and new channels to be constructed, their locations, cross sections and profiles.
(E) Proposed culverts and bridges to be built, their materials, elevations, waterway openings and basis of their design.
(F) Existing detention basins and ponds to be maintained, enlarged, or otherwise altered and new basins or ponds to be built and the basis of their design.
(G) The location and percentage of impervious surfaces existing and expected to be constructed when the development is completed.
(H) The slope, type and size of all storm sewers and other waterways.
(I) For all detention basins, a plot or tabulation of storage volumes with corresponding water surface elevations and a plot or tabulation of the basin outflow rates for those water surface elevations.
(Ord. 1999-05, passed 6-8-99)