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This project involves intensively retrofitting a small neighborhood and alleys in highly urbanized areas of Baltimore City to reduce and treat stormwater runoff through the use of street bumpouts (bioretention), permeable pavement alleyways, rain barrels, downspout disconnection, and other green infrastructure projects. The neighborhood project will focus on a small 1-2 square block neighborhood area and will address stormwater runoff from a small area of dense urban development. The main objective of this project is to have this focused retrofit area serve as a model to be replicated throughout additional neighborhoods and community centers in the City. Up to four bumpout designs and four alleyways (up to 50,000 square feet) will be constructed as part of this project. While the focus of the project will be within the Butchers Hill neighborhood, at least two alley retrofits will be constructed outside the neighborhood in priority watersheds to encourage transferability of these designs to other areas throughout the City. The alleys to be retrofit will be selected from a City list of alleyways are in need of re-paving and are located in priority watersheds. The alley retrofit concept is based on the implementation of a successful and large scale program in Chicago. As a result of these alley and neighborhood retrofits, this project is anticipated to remove 36 lbs of Nitrogen, 10 lbs of P, and 1.3 tons of sediment.
In addition to streetscape improvements and architectural guidelines, the Butchers Hill Master Plan also addresses green initiatives.
