Presenters: Christopher Behr, HDR Engineering Inc., and Franco Montalto, Drexel University
Session 16: Examining the Cost of Green

Low Impact Development Rapid Assessment (LIDRA) Version 2.0—a free Web-based planning model developed at Drexel University — is useful for quantifying uncertainty related to green infrastructure performance, costs, demand, and benefits. LIDRA provides a stormwater control’s overall cost-effectiveness by coupling a life-cycle cost analysis with a performance analysis. Users can vary green infrastructure adoption rates and compare its use on various land and street types while utilizing costs from national data sets. The resulting information can improve informed decision-making, and due to its rapid assessments, LIDRA is also useful for comparing alternatives during the public participation process.