Implementation of Low Impact Development (LID) in the District of Columbia: Lessons Learned

• Published in: Proceedings of the 2008 International Low Impact Conference Vol. 333; pp. 1 - 11
• Main Author: Caldwell, Walter K
• Format: Conference Proceeding Book Chapter
• Language: English
• Published: 01-01-2009
• Subjects: best practices; Conferences; Hydraulics; Q1; reinforced concrete; Storms; Urban areas; water quality; Water treatment; Water wells
• ISBN: 0784410097; 9780784410097
• DOI: 10.1061/41009(333)38

The District of Columbia storm water management established in 1988 now require mitigation of water run off where construction and or 5000 sq/ of earth disturbance occurs. As in many in the Mid-Atlantic seeking to meet requirements the Clean Water Act (CWA), and the Water Quality in 1987 to the CWA, the District of Columbia employing Storm Water Best Management Practices for the treatment of storm water run-off. BMPs typically been .end of pipe. proprietary devices, vaults, modified manholes or filtering practices water quality treatment and even larger under vaults, reinforced concrete, and metal or plastic for storm water quantity control. While the was a pioneer in the use of underground sand for the treatment of storm water in ultra urban and continues to approve and install these as well as other subterranean vault and manhole the city is turning to Low Impact Development practices which have began to gain more in the development community. This paper publicly financed and implemented LID projects in District of Columbia and will discuss the types problems that have occurred and the .lessons Biomass mortality, aesthetics and function, as as hydraulics and maintenance are blamed for most Two LID retrofits are included in the case study analysis focusing on a bioretention cell cost and monitoring data), as well as a retrofit of various types of pervious pavers.