Pre-development and post-development calculations of the stormwater runoff. The analysis shall include impacts from the quantity of runoff as well as the quality of the runoff.

The site design, drainage collection, and drainage treatment systems shall be designed in accordance with the requirements and guidance set forth in the Connecticut Stormwater Quality Manual, as may be amended, published by the Connecticut Department of Energy and Environmental Protection, as well as the requirements of Town stormwater ordinances.

In addition to best management practices currently available, and in the absence of specific design criteria which may not be identified in these documents or other requirements of the Town, the applicant shall, at a minimum, design the stormwater collection system to retain the first 1.3 inches of runoff from impervious areas on site, and provide a zero increase in the peak rate of runoff from the site for the twenty-five-year storm, with an evaluation of the impacts from a fifty- and 100-year storm. After the evaluation is complete, if a larger design storm is warranted as determined in consultation with the Town Engineer, the applicant shall design the drainage for no net increase in the peak runoff rates generated from the 100-year storm.

The stormwater management plan shall identify specific data for the site improvements as follows:

The stormwater management plans shall specify the post construction operations and maintenance of structural stormwater best management practices incorporated into the site design.