Any development or redevelopment subject to the provisions of this chapter shall submit a drainage plan for review by the town in conjunction with application for a zoning permit or feasibility permit. The town shall review the drainage plan for compliance with the provisions of this chapter, The drainage plan shall be prepared and bear the seal of a licensed professional engineer, and include the following:
(A) Topographic map of the total drainage area that includes the project site. The topographic map shall have a scale not smaller than one inch = 50 feet, and include the following:
(1) Contours at two-foot intervals;
(2) Property lines;
(3) Projects construction elements (structures, parking lots, driveways, and other impervious surfaces);
(4) Existing perennial and intermittent streams; wetlands; and springs; and
(5) Existing man-made stormwater facilities.
(B) Engineering drawings depicting design and details of proposed piping, drainage structures, retention/detention structures, and channels connecting to a network of man-made or natural drainage features.
(C) Specifications of piping, drainage structures, permanent erosion control measures, and retention/detention structures.
(D) Computations to support the design and specifications.
(Ord. passed 5-5-2015)