Public Works and Government Services Canada (PWGSC) initiated this study to add to the pool of information on Best Management Practices (BMPs) and Low Impact Development (LID) methods. In June 2003, PWGSC partnered with Kerr Wood Leidal Associates Ltd. to conduct a year long monitoring project on the Vancouver Public Library green roof. The purpose of this project is to assess the performance of the green roof during the rainy and dry seasons (saturated and non-saturated conditions). Data on air and runoff water temperature, soil moisture, relative humidity, rainfall, wind speed and direction, gust speed and solar radiation are being collected. With this information a computer model can be developed to assist in prredicting stormwater impacts for various soil depths and climatic regions of the Pacific Northwest.
Vancouver public library green roof monitoring project - Case Study