Vegetated bioretention is one of the most cost effective stormwater treatment systems when the area of drainage is incorporated into a cost accounting. “On par with most subsurface systems.” Even though bioretention cells are expensive to maintain on an individual basis, they are comparable to subsurface systems when the drain field is taken into consideration. By contrast, green roofs are the most expensive features to maintain because they typically only manage direct rainfall onto the roof.—from CH2M’s Andrew Potts, Brian Marengo and Dan Wible presented at WEFTEC 2015 as published in Water Environment Federation’s Stormwater (http://stormwater.wef.org/2015/12/real-cost-green-infrastructure/).
The article included before and after photos of green infrastructure at Lancaster Brewing saying that the green infrastructure stormwater project “improved traffic and pedestrian safety” and “enhanced a local business…” What wasn’t mentioned is that there were problems with the original installation resulting in poor performance. North Creek Nursery’s Claudia West was called in as one of the team members to troubleshoot. She redesigned planting plans. The photo shown here was taken June 2015, the first season after replanting.