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As the City of Chattanooga continues to grow and develop, impervious surfaces such as parking lots, rooftops, and roadways increase the amount of stormwater runoff during rainfall events, altering the natural hydrologic regime. Without a properly designed and implemented stormwater management program, increased stormwater runoff may lead to stream channel erosion, increased levels of pollutants entering the City’s streams and rivers, increased flooding potential, and decreased groundwater recharge. Retrofitting your site with green infrastructure not only can improve the benefit to human health, fish and wildlife habitat, and recreational opportunities, but can give you a payback in stormwater fees in the long run.” City of Chattanooga Resource Rain

In this presentation we will explore a case study in retrofitting for green infrastructure at the Four Squares Office complex owned by the Raines Group and address these topics:

• Why should you consider retrofitting your property with green infrastructure? 
• Why did Bill Raines almost “pull the plug” on the wetland?
• Cost benefit analysis for retrofitting.  Which types of green infrastructure provide the best payback?
• What are the maintenance considerations?
• How do you keep the lines of communication open with your regulators?
• What would change for new projects with Resource Rain?