This article presents the results of a study proving the effectiveness of using trees in bioswales. A bioswale integrating an engineered soil and trees was installed in a parking lot to evaluate its ability to reduce storm runoff, pollutant loading, and support tree growth. Storm runoff, pollutant loading, and tree growth were measured. The bioswale reduced runoff by 88.8% and total pollutant loading by 95.4%. The engineered soil provided a better aeration and drainage for tree growth than did the control’s compacted urban soil. The superior performance of the bioswale demonstrated its potential use for large-scale application in parking lots and roadsides to reduce runoff and support tree growth.
Within the Lake Macatawa watershed, The Macatawa Area Coordinating Council (MACC) and TetraTech completed a green infrastructure assessment of five partner agencies within four localities using the EPA’s Water Quality Scorecard. This assessment identifies obstacles to MACC green implementation goals by evaluating local codes, policies and procedures. This report describes the assessment process and presents key findings from the reviews of the five partner agencies’ plans, policies and codes with a summary of the action items that the partners could implement.
This online interactive climate simulation toolkit is a system dynamics simulation that tracks the stocks of green and grey infrastructure based on a user’s decisions about allocation of investment. The user can also set different rainfall regimes and modify the assumptions about the effectiveness of different types of green infrastructure at capturing and retaining water to help answer “what if” questions about investing in green infrastructure. A range of benefits beyond stormwater management are tracked and reported, including economic, social and environmental performance outputs.
Provides stormwater managers and site designers with a common understanding of LID goals, objectives, specifications for individual practices, and flow reduction and water quality treatment credits that are applicable to the Puget Sounds region.
A streamlined factsheet describing the uses, design options and benefits of linear stormwater tree pit. These stormwater tree pits are similar to traditional street tree pit design, but are modified so the pit accepts and treats stormwater runoff and provides an improved planting environment for the tree.
This report addresses the fact that the impacts of stormwater pollution and the need to provide stormwater prevention, management, and treatment all create costs for communities and their residents. But provides data and case studies that show these costs can often be offset or reduced by making different choices about how we build communities and infrastructure. By incorporating trees and “green infrastructure” practices in efforts to control stormwater runoff, communities and property developers can reduce energy costs, diminish the impacts of flooding, improve public health, and reduce overall infrastructure costs.
This Guidebook introduces city planners and policy makers to Green Streets, advocates for Green Streets implementation in Holyoke, and serve as a preliminary set of design guidelines to transform Holyoke’s streets into more ecologically, socially, and economically positive spaces. The Guidebook includes a Toolbox with recommended Green Street strategies related to green infrastructure, complete streets, and placemaking.
This report develops a range of green infrastructure scenarios consistent with the constraints of a recently remediated brownfield that can be implemented within the framework of a 15- to 20-year development master plan. There are collections and descriptions of key findings during the exploration of this topic that can be applied to the Zidell site and other redevelopment projects of similar character. The conceptual design scenarios apply green infrastructure solutions that capitalize on infiltration and innovation for the remediated brownfield site with the goal of exceeding existing regulatory requirements for stormwater management and providing creative solutions with multiple community benefits.
This EPA website provides green infrastructure guidance relating to construction, operation and maintenance, and common design challenges. It features links to various stormwater design manuals created by states, counties, municipalities, and nonprofits across the United States and Canada. Many modeling design tools are also available through this website to assist with compliance in local stormwater regulations and/or meeting voluntary performance standards. A large portion of this website focuses on lessons learned from past municipal projects and identifies some of the most common design and implementation challenges. Various site characteristic challenges and implementation scenarios are presented with summarized recommendations and links to supporting material.
The EPA website is designed to assist municipalities in growing green infrastructure throughout the built environment. The website features a Municipal Handbook provides local governments step-by-step material on growing green infrastructure in their communities, with chapters on funding options, retrofit policies, green streets, rainwater harvesting policies, and incentive mechanisms. The website also contains a series of EPA policy guide publications for Smart Growth and water resources protection that can be used by municipalities looking to innovate their policies concerning green infrastructure. Finally a policy tool kit features communication and program evaluation tools that are designed to help local governments effectively promote green infrastructure.