DEP is conducting a comprehensive green infrastructure benefit and cost evaluation. By directly monitoring different types of green infrastructure as well as using data from literature review, DEP is working to identify and quantify non-stormwater benefits. Some of the benefits DEP is working to identify and quantify are:
- Carbon sequestration
- Urban heat island mitigation
- Reduced energy demand in buildings
- Improved habitat and ecosystem services
- Improved air quality
- Community revitalization
- Flood mitigation
- Improved urban agriculture opportunities
- Green jobs
The study will also identify and quantify the life-cycle environmental costs and economic costs of the green infrastructure projects being studied. These benefits and costs will be added to a database to support comparisons and evaluations of green infrastructure used throughout the city.
Nine different green infrastructure projects are currently being monitored: right-of-way bioswales, green roof, blue roof, a bioretention area, a constructed wetland, and porous pavements. The study will be completed in 2014.