Lot E Staircase and Water Quality Improvement

Lot E Staircase and Water Quality Improvement

Project Team
McCormick Taylor; Centennial Contractors Enterprises, INC; Howard County
Project Description

This project provided a unique solution to the urban infrastructure challenge of treating stormwater on a steep slope, while also increasing pedestrian safety in Historic Ellicott City. The project involved a two-tiered bioretention treatment train where water enters into a flume and is carried beneath the stairway into the first bioretention cell which, when full, flows over into a rock channel via a weir waterfall and into the second bioretention cell. A tree box filter next to the second bioretention cell catches water off of Lot E and an additional bioretention downhill from the flume entrance catches water not captured by the flume’s inlet. Densely planted native species uptake nutrients in the runoff while providing year round aesthetic value and habitat improvement.
To read a complete project narrative and view more photos, please visit the project folder in our Google Drive.

Best Ultra-Urban Project

This category recognizes the best application of green infrastructure (GI) practices that are built in highly urban areas to reduce flooding and pollutant delivery (more than 75% site impervious cover). Some examples include: green streets, walls, roofs or parking lots, rainwater harvesting systems, urban forestry practices, and permeable hardscapes.

Gallery

Attachment

project-narrative
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