Monday 8:00 AM
Wet Weather 
[Presentation PDF]

Room: Emerald

Grey vs. Green Infrastructure Evaluation: What is the Most Cost Effective Solution?

Green infrastructure can provide a host of environmental and public development benefits. Unfortunately, green infrastructure solutions, to stormwater and combined sewer overflow (CSO) management issues, can come at a higher capital and life cycle cost when compared to the traditional grey alternatives. Some public utilities base their decisions on the lowest cost option, while others, in an effort to support sustainable solutions, have adopted green standards that require the use of green BMPs on all stormwater and CSO projects. Neither of these approaches truly evaluates all the benefits of both grey and green solutions and neither provides the needed data and guidance to select the most cost effective solution. As part of the City of Fort Wayne (Indiana) Combined Sewer Overflow (CSO) Long-Term Control Plan (LTCP) program, a tool was developed to aid planners in comparing grey infrastructure and green infrastructure alternatives. The City of Fort Wayne's Green Infrastructure Scorecard uses a triple bottom line approach to evaluate, compile, and compare economic, social, and environmental impacts of multiple project alternatives. The scorecard not only provides a consistent evaluation process but also provides the justification and documentation to support each planning decision. This paper presents the background for the development of the scorecard, details on how it was developed and tailored for the City of Fort Wayne, overview of the specific metrics included in the scorecard, how the scorecard is used in the planning process, and project specific examples.

Moderator:  Dan Small


Aaron Hutton - Arcadis U.S., Inc.

Aaron Hutton is a 2003 Purdue University graduate and a Professional Engineer with Malcolm Pirnie, the water division of Arcadis-US.  He works in the Fort Wayne Indiana office and over the last two and half years has been heavily involved with the City of Fort Wayne’s Long Term Control Program Management.  As part of this program, Aaron has completed several wet weather planning level engineering reports, including reviewing traditional partial separation, alternative green infrastructure, asset management, and community development solutions.  In addition to wet weather planning, Aaron also manages design teams, completes design reviews, and works to standardize and update contract documents, specifications, and project manuals.  Prior to working for Malcolm Pirnie, Aaron worked for a water and waste water engineering and construction firm and has experience in the areas of construction planning, engineering, and management.  Aaron is happy to be a part of WATERCON 2012 and is excited to share his experience, as well as learn from the other talented presenters.