1. Denitrifying Woodchip Bioreactor Performance in the Pacific Northwest

Runoff and tile drainage from agricultural activity is known to be a significant contributor of nitrogen pollution to surface waters.  Denitrifying woodchip bioreactors, also known as Permeable Reactive Barriers (PBR) have been studied as a possible edge-of-field technology for reducing nitrogen concentrations in agricultural runoff.  These units have been studied mostly in the US Midwest and mostly for irrigated crop systems.  Little work has been done in alternative climate regimes... E.M. Weisshaar