Retrofitting Residential Streets with Stormwater Control Measures over Sandy Soils for Water Quality Improvement at the Catchment Scale

Autor:	Ryan J. Winston, Jonathan L. Page, Dave B. Mayes, William F. Hunt, Christy A. Perrin
Rok vydání:	2015
Předmět:	Hydrology Environmental Engineering Watershed Stormwater Environmental engineering Bioretention Impervious surface Environmental Chemistry Environmental science Water quality Low-impact development Surface runoff General Environmental Science Civil and Structural Engineering Urban runoff
Zdroj:	Journal of Environmental Engineering. 141
ISSN:	1943-7870 0733-9372
DOI:	10.1061/(asce)ee.1943-7870.0000898
Popis:	Impervious cover (IC) has been shown to increase runoff volumes, peak discharges, and pollutant loads to streams, which can lead to degraded water quality and biological integrity. Stormwater control measures (SCMs) have been developed to mitigate the hydrologic and water quality impacts of urban areas and IC. This paired watershed study evaluated the impacts of multiple SCM retrofits on water quality at a catchment scale in a 0.53 ha urban residential drainage area. In February 2012, an in-street bioretention cell (BRC) retrofit, four permeable pavement parking stalls, and a tree filter device were installed to treat residential street runoff in Wilmington, North Carolina. In the retrofitted catchment, 94% of the directly connected impervious area (DCIA) and 91% of the total drainage area were retrofitted for water quality treatment. Underlying soils in the study area were sand. After the SCM retrofits were constructed, concentrations of total Kjeldahl nitrogen (TKN), total phosphorous (TP), tota...
Databáze:	OpenAIRE
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