Targeted Street Sweeping to Remove Nutrients from Stormwater
This project demonstrated, for the first time, that targeted street sweeping can remove large amounts of phosphorus (P) from streets. It is especially useful where tree canopies extend partially over streets and during the late spring and fall, when there is a lot of vegetative debris falling into streets. We developed a street sweeping planning tool - an Excel spreadsheet to enable public works departments to estimate the effect of various sweeping scenarios on removal of dry solids, nitrogen, and P. The tool (free upon request) also estimates total cost for each scenario. Cost efficiency is one major potential benefit compared to structural BMPs. Several cities have started planning to implement enhanced sweeping and a few have started implementation.
Lawrence Baker, Paula Kalinosky, Sarah Hobbie, Ross Bintner, and Chris Buyarski