Nutrient and Escherichia coli Attentuation in a Constructed Stormwater Wetland in the North Carolina Coastal Plain

Humphrey, Charles; Chaplinski, Nicholas; O’Driscoll, Michael A.; Kelley, Timothy; Richards, Stephanie E.

doi:10.5539/enrr.v4n3p12

Cited by 9 publications

(11 citation statements)

References 24 publications

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“…The City of Greenville has acquired grant funds and low-interest loans to install stormwater control measures including a regenerative stormwater conveyance, bio-retention cells, and stormwater wetlands in the watershed. These practices should help improve water quality by treating and reducing urban runoff (Humphrey et al, 2014). Pet waste collection stations are also suggested to reduce pet contributions of E. coli to shallow groundwater and surface waters.…”

Section: Resultsmentioning

confidence: 99%

Environmental Health Threats Associated with Drainage from a Coastal Urban Watershed

Humphrey¹,

Blackmon²,

Kelley³

et al. 2018

ENRR

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The project goal was to determine if stormwater runoff and the legacy effects of leaking underground storage tanks (UST) posed an environmental health threat along an urban stream, Town Creek (TC). Baseflow and stormflow samples were collected from TC between March and October 2016 for physical and chemical characterization and E. coli analyses. Groundwater seeps and wells near the banks of TC were also sampled for E. coli and benzene analyses. Stormflow concentrations of E. coli were significantly (p < 0.05) elevated relative to preceding baseflow and groundwater concentrations. Overall, 80% of stormflow samples and 45% of baseflow samples exceeded the US EPA recommended standards for E. coli in recreational waters. Benzene was detected in all water samples analyzed and 50% of samples collected from a seep on the western bank of TC exceeded the maximum contaminant level. Concentrations of benzene emitted to air from contaminated soil exceeded short term exposure standards 75% of times sampled. Results suggest the drainage from TC may be a threat to environmental health. Implementation of stormwater control measures is suggested to reduce the delivery of runoff and E. coli to TC. Remediation of groundwater contaminated by leaking underground storage tanks is also suggested.

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Section: Resultsmentioning

confidence: 99%

Environmental Health Threats Associated with Drainage from a Coastal Urban Watershed

Humphrey¹,

Blackmon²,

Kelley³

et al. 2018

ENRR

Self Cite

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“…Constructed stormwater wetlands have been successfully adopted for treating runoff from a variety of catchments, including: residential communities, industrial/commercial areas, roadways, institutional campuses, apartment complexes, parking lots, stormwater retention ponds, and even to treat combined sewer discharge (Al-Rubaei et al 2016;Ávila et al 2013;Forgione 2015;Humphrey et al 2014;Lynch et al 2015;Mangangka et al 2015b). CSWs can treat a variety of stormwater pollutants, but studies have shown they preform exceptionally well at removing nutrient pollutants (Al-Rubaei et al 2016;Ávila et al 2013;Chang et al 2012;Humphrey et al 2014;Lucas et al 2015;Lucas and Babatunde 2017;Schmitt et al 2015).…”

Section: Constructed Stormwater Wetlandsmentioning

confidence: 99%

Integrated planning framework for urban stormwater management: one water approach

Hager

Mian

et al. 2021

Sustainable and Resilient Infrastructure

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All model development and validation was conducted by Mr. Hager under the supervision of Drs. Rehan Sadiq and Kasun Hewage.A manuscript titled "Performance of low impact development best management practices: a critical review" has been published in the journal Environmental Reviews. That paper was comprised of parts of Chapter 2 of this thesis. The paper was written by James Hager under the supervision of Drs. Rehan Sadiq and Kasun Hewage. Dr. Guangji Hu was also an author on this paper due to his contributions during the paper writing process, including help with paper layout and technical reviews.

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“…Similar to detention basins and other GI systems, wetlands are installed to reduce the delivery of pollutants to surface waters, and their performance is commonly reported as being variable due to the site-specific nature of influential factors [29,30].…”

Section: Introductionmentioning

confidence: 99%

“…Humphrey et al, 2014 studied the stormwater water-quality improvement in a constructed wetland in North Carolina. Results showed that high pollutant reduction efficiency is due to the relatively large size of the wetland area and below-average rainfall that likely contributed to improving the water-quality performance [30].…”

Section: Introductionmentioning

confidence: 99%

Water Quality Improvement and Pollutant Removal by Two Regional Detention Facilities with Constructed Wetlands in South Texas

Guerrero¹,

Mahmoud

Alam

et al. 2020

Sustainability

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Stormwater runoff introduces several pollutants to the receiving water bodies that may cause degradation of the water quality. Stormwater management systems such as detention facilities and wetland can improve the water quality by removing various pollutants associated with the runoff. The objective of this research project is to determine the performance and efficiency of two major regional detention facilities (RDFs) with different designs and structures in reducing pollutants based on various storm events in McAllen, Texas. The two sites are the McAuliffe RDF and the Morris RDF; each site was incorporated with a constructed wetland with a different design and structure to enhance the pollutant removal process. The McAuliffe RDF reduced the concentration and load of many stormwater constituents in comparison to the Morris RDF. The observed concentrations and pollutant loads of suspended solids were much lower in the runoff of the inlet compared to the outlet for both sites. The McAuliffe RDF showed better concentration and load reduction for nutrients, such as nitrogen and phosphorus, of different species. However, both sites did not show a significant improvement of organic material. In addition, the indicator bacteria concentration represented a fluctuation between the inlet and outlet at each site.

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Nutrient and Escherichia coli Attentuation in a Constructed Stormwater Wetland in the North Carolina Coastal Plain

Cited by 9 publications

References 24 publications

Environmental Health Threats Associated with Drainage from a Coastal Urban Watershed

Environmental Health Threats Associated with Drainage from a Coastal Urban Watershed

Integrated planning framework for urban stormwater management: one water approach

Water Quality Improvement and Pollutant Removal by Two Regional Detention Facilities with Constructed Wetlands in South Texas

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