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
Download Now

Related Award Category

Summit Terrace Green Neighborhood
2021
2nd Place

Summit Terrace Green Neighborhood

The Summit Terrace Green Neighborhood is a lower-cost yet highly effective project that succeeds in treating a large amount of stormwater while also creating...
Read More
Taking a School By Storm
2019
Honorable Mention

Taking a School By Storm

This schoolyard retrofit project — featuring rooftop disconnections, permeable pavement and a rain garden — receives an honorable mention for its outstanding use of...
Read More
University of Maryland-Baltimore Health Sciences Facility III
2021
3rd Place

University of Maryland-Baltimore Health Sciences Facility III

The UMD Health Sciences Facility III Project stood out for its ability to overcome significant and challenging site constraints to effectively and creatively manage...
Read More