Urban Stormwater Retrofits
Over the last two decades, the Chesapeake Bay states have pioneered new techniques for finding, designing and delivering retrofits to remove pollutants, improve stream health and maintain natural hydrology in developed watersheds. Several important regulatory drivers are likely to increase the amount of future stormwater retrofit implementation across the Chesapeake Bay watershed. Some communities need to install retrofits to meet pollutant reduction targets under recently issued municipal stormwater permits or meet local TMDLs. In addition, each of the seven Bay states are considering greater use of urban stormwater retrofits as part of an overall strategy to meet nutrient and sediment load reduction targets for existing urban development under the Chesapeake Bay TMDL.
In the Fall of 2011, an Expert Panel was convened to review all of the available science on the pollutant removal performance and runoff reduction capability of BMPs that can be used to derive methods or protocols to derive nutrient and sediment removal rates for individual retrofits. On October 9, 2012 the final recommendations were approved by the Water Quality Goal Implementation Team! The recommendations with or without appendices can be found below. Great job to the panelists!!
Also, don’t forget to check out our newly developed Urban Stormwater Retrofits “Fact Sheet” which breaks down the practice and the expert panel recommendations into delicious bite-size pieces …yum, yum, enjoy!
Urban Stormwater Retrofits Final Report(s)
The following training resources have been created for explaining the panel recommendations – enjoy!