The document summarizes a study that monitored the flow control and water quality performance of a residential low impact development (LID) project in Washington state. Key findings from the monitoring include: 1) The project met forested duration standards for flow control in areas with bioretention, 2) Total and dissolved metals levels at the point of compliance were very low, 3) Modeling showed the project would continue to meet standards if the lined bioretention area was included. The study demonstrated the LID applications were effective at flow control and water quality treatment.