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      THE UNIVERSITY OF DELAWARE RAIN GARDEN: ENVIRONMENTAL MITIGATION OF A BUILDING FOOTPRINT

      1 , 2

      Journal of Green Building

      College Publishing

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          INTRODUCTION

          Green technology best management practices such as rain gardens are often used to retrofit and mitigate the footprints of buildings and impervious cover in watersheds. Rain gardens are a recent technology created to help remedy water abuses. A rain garden promotes the environmental benefits of storm water mitigation, water conservation, groundwater recharge, and reduced waterbody pollution. This research documents the process of implementing a rain garden from initiation through completion on the campus of the University of Delaware in the White Clay Creek National Wild and Scenic River watershed. The design considered the surrounding drainage area, infiltration rates, and plant selection. Through this project the researcher sought to create a demonstration that could inspire the public to create rain gardens. Initial goals of the research included preventing standing water from remaining in the garden after a four-day period, avoiding amendments to the native soil, and foregoing the removal of excavated soil from the rain garden depression off the site. In addition, no plant species were to be planted within the rain garden depression that were not native to within a five-hundred mile radius of Newark, Delaware. From this research, recommendations were generated for those wishing to install a rain garden. These include establishing initial goals, involving stakeholders, considering alternative overflow outlets, and inspecting soils to at least a 6-foot (1.83 m) depth. Further recommendations include stabilizing the contributing drainage area; utilizing aged, triple shredded hardwood mulch; and considering berms for use in capturing runoff and regulating outflows. In addition to mitigating the impacts of stormwater runoff from the buildings and parking lots in the watershed, the rain garden also serves as an outdoor education and research laboratory on campus.

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          Most cited references 14

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          “Water quality improvement through bioretention: Lead

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              “Rain gardens.” [Electronic version]

               K. Cozetto (2001)
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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1552-6100
                1943-4618
                1943-4618
                Winter 2007
                : 2
                : 1
                : 53-67
                Author notes

                1.Fellow in the University of Delaware Longwood Graduate Program. Masters Degree in Public Horticulture, Newark, DE 19716. lorax7073@ 123456yahoo.com .

                2.Project Director and Professor of Water Resources Engineering with the University of Delaware Institute for Public Administration – Water Resources Agency and the Department of Civil and Environmental Engineering, respectively, DGS Annex Building, Academy Street, Newark, DE 19716. 302-831-4929. jerryk@ 123456udel.edu .

                Article
                jgb.2.1.53
                10.3992/jgb.2.1.53
                ©2007 by College Publishing. All rights reserved.

                Volumes 1-7 of JOGB are open access and do not require permission for use, though proper citation should be given. To view the licenses, visit https://creativecommons.org/licenses/by-nc/4.0/

                Page count
                Pages: 15
                Product
                Categories
                INDUSTRY CORNER

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