BMP Performance and Cost‐Benefit Analysis: Capitol Region Watershed District Arlington Pascal Project 2007‐2010

There has been a recent shift in watershed management approaches and concepts such as green infrastructure, innovative stormwater best management practices (BMPs), and low impact development (LID) have become increasingly more prevalent; particularly in the development/re-development of urban watersheds for stormwater quality improvements. The importance of staying current on new and innovative stormwater management approaches, given the urbanized nature of the District and limitations of traditional stormwater management practices, was identified in the Capitol Region Watershed District's (CRWD) 2010 Watershed Management Plan (CRWD, 2010a). Urban stormwater management is the primary focus for improving the quality of CRWD's water resources; with efforts focused on investigating new stormwater management techniques and approaches including green infrastructure practices such as rain gardens, pervious pavement, green roofs, and integrated tree trenches. Opportunities for BMP retrofits, which incorporate those innovative concepts, are being explored and incorporated in to CRWD projects.