Bioretention tree wells with integrated trash capture provide stormwater collection and treatment where space is limited and pedestrian access needs to be maintained. Stormwater enters through the trash capture inlet where debris is removed before biotreatment soil media in the bioretention area filter out pollutants. Stormwater not used by the tree percolates into the ground or enters the storm drain system through a perforated underdrain. This system was developed by the City of Fremont and is included as a standard detail for construction.