Beyond Runoff Reduction – Thorough Green Infrastructure Design

Presentation: PowerPoint

Author(s): Zach Sample, PE Stormwater Product Manager XP Solutions

Abstract: While the Runoff Reduction method is a quick and simple approach to Stormwater Control design, it should only be used as a starting point as the conventional application of the Runoff Reduction method precipitates two primary issues – coarseness of the facility designs and cumbersome to vet, review and adequately approve systems. By focusing on more rigorous treatment train analysis, yet still remaining approachable and quick to assess, in addition to providing clearly reviewable and auditable system details, we can extend the applicability of the Runoff Reduction method while achieving more appropriate system planning. A case study will exhibit how this design scheme allows us to demonstrate, in a quantifiable way, an effective treatment train approach to flow and pollution control. Further, it will show an immediate reduction in design waste by demonstrating the realistic connectivity of these treatment trains and how these can influence site planning and design. As a result of this clear visualization scheme, we are able to mitigate urban runoff and protect the water quality of the receiving waters in a way that is affordable now and in the future.