This manual was developed for the Long Island Sound Futures Fund project Improving Water Quality through Green Infrastructure in Quanaduck Cove and Long Island Sound (CT), aimed at implementing Stormwater Management Green Infrastructure Best Management Practices. The goal of the project was to mitigate the impact of stormwater runoff on water quality and the environment within Stonington Harbor and Long Island Sound from the Condo Complex. This guidance manual is intended for use by community associations within the Long Island Sound watershed.