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RISAsphalt Parking Lot Runoff Nutrient Characterization for Eight Sites in North Carolina, USA
Publisher: American Society of Civil Engineers
Abstract: The objectives of this study were to characterize asphalt parking lot runoff quality and determine factors influencing nutrient concentrations and loads. Event mean concentrations (EMCs) and loads were measured from eight ...
Maintenance versus Maturation: Constructed Storm-Water Wetland’s Fifth-Year Water Quality and Hydrologic Assessment
Publisher: American Society of Civil Engineers
Abstract: Constructed storm-water wetlands (CSWs) have become popular storm water control measures (SCMs) in low-lying coastal environments, offering a hybrid between larger detention practices (wet ponds) and newer green infrastructure ...
Are Bioretention Cells Being Installed Per Design Standards in North Carolina? A Field Study
Publisher: American Society of Civil Engineers
Abstract: Forty-three bioretention cells (BRCs) throughout North Carolina were assessed for maintenance needs, soil media composition, and as-built surface storage volume to determine whether BRCs are typically constructed per their ...
Impacts of Construction Activity on Bioretention Performance
Publisher: American Society of Civil Engineers
Abstract: Bioretention cells are incorporated as part of low impact development (LID) because of their ability to release influent runoff as exfiltration to the soil or evapotranspiration to the atmosphere. However, little care is ...
Bioretention Impact on Runoff Temperature in Trout Sensitive Waters
Publisher: American Society of Civil Engineers
Abstract: A study was conducted in western North Carolina, along the southeastern extent of the U.S. trout populations, to examine the effect of bioretention areas on runoff temperature. Four bioretention areas were monitored during ...
Evaluating Four Storm-Water Performance Metrics with a North Carolina Coastal Plain Storm-Water Wetland
Publisher: American Society of Civil Engineers
Abstract: Storm-water best management practices (BMPs) are typically assessed using the performance metric of pollutant concentration removal efficiencies. However, debate exists whether this is the most appropriate metric to use. ...
Effect of Storm-Water Wetlands and Wet Ponds on Runoff Temperature in Trout Sensitive Waters
Publisher: American Society of Civil Engineers
Abstract: With increasing development in areas of trout sensitive waters, the effect of urban storm-water runoff temperature on the aquatic ecosystem has become a concern. A study was conducted in western North Carolina, along the ...
Impacts of Media Depth on Effluent Water Quality and Hydrologic Performance of Undersized Bioretention Cells
Publisher: American Society of Civil Engineers
Abstract: Fill media and excavation volume are the main costs in constructing bioretention cells, but the importance and impact of media depth in these systems is relatively unknown. Two sets of loamy-sand-filled bioretention cells ...
Hydrologic Modeling of Distributed Stormwater Control Measure Retrofit and Examination of Impact of Subcatchment Discretization in PCSWMM
Publisher: ASCE
Abstract: Modifications made to the landscape during urbanization can lead to increased stormwater runoff volumes and peak flows. Low-impact development (LID) techniques and green stormwater infrastructure are implemented to minimize ...
Monitoring the Water Quality Benefits of a Triangular Swale Treating a Highway Runoff
Publisher: ASCE
Abstract: Swales are among the most commonly used stormwater control measures (SCMs) worldwide. In 2009, the North Carolina DOT constructed a grassed swale in Knightdale, North Carolina, in the right-of-way of Interstate 540 near ...