Chemistry of stormwater runoff from a large green roof in Syracuse, NY

Alexander Johnson, Cliff Ian Davidson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A green roof can provide a wide variety of ecological benefits in urban environments such as reducing the amount of stormwater runoff. In addition, the growth medium may filter contaminated rainwater, providing runoff that is cleaner than the incoming rain. However, the growth medium might contribute other contaminants, thereby increasing the concentration relative to the rainwater. Thus, field experiments are needed to determine which contaminants are filtered out and which are leached from the growth medium during large rainstorms. It is also possible that some contaminants deposited from the atmosphere are picked up by the runoff. To investigate these issues, we determined the chemistry of stormwater runoff from two adjacent rooftops: A 1.5 acre extensive green roof on the Onondaga County Convention Center and a similarly sized gray roof on the war memorial sports arena, both located in downtown Syracuse, New York. We assumed that the same atmospheric contaminants depositing on the green roof are also depositing on the gray roof. This allowed us to compare concentrations of chemical species in the rain, green roof runoff, and gray roof runoff to determine which contaminants are contributed by the rain, by leaching from the growth medium, and by atmospheric deposition. Results from storms sampled in 2014, 2015, and 2016 suggest that sulfate and copper are leached from the growth medium while lead is filtered. Additional experiments will be conducted to better understand the leaching potential of the green roof.

Original languageEnglish (US)
Title of host publicationInternational Conference on Sustainable Infrastructure 2017
Subtitle of host publicationMethodology - Proceedings of the International Conference on Sustainable Infrastructure 2017
PublisherAmerican Society of Civil Engineers (ASCE)
Pages45-52
Number of pages8
ISBN (Electronic)9780784481196
DOIs
StatePublished - Jan 1 2017
Event2017 International Conference on Sustainable Infrastructure: Methodology, ICSI 2017 - New York, United States
Duration: Oct 26 2017Oct 28 2017

Other

Other2017 International Conference on Sustainable Infrastructure: Methodology, ICSI 2017
CountryUnited States
CityNew York
Period10/26/1710/28/17

Fingerprint

Runoff
Roofs
Impurities
Rain
Leaching
Sports
Lead
Experiments
Copper

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Management of Technology and Innovation
  • Safety, Risk, Reliability and Quality
  • Renewable Energy, Sustainability and the Environment

Cite this

Johnson, A., & Davidson, C. I. (2017). Chemistry of stormwater runoff from a large green roof in Syracuse, NY. In International Conference on Sustainable Infrastructure 2017: Methodology - Proceedings of the International Conference on Sustainable Infrastructure 2017 (pp. 45-52). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784481196.005

Chemistry of stormwater runoff from a large green roof in Syracuse, NY. / Johnson, Alexander; Davidson, Cliff Ian.

International Conference on Sustainable Infrastructure 2017: Methodology - Proceedings of the International Conference on Sustainable Infrastructure 2017. American Society of Civil Engineers (ASCE), 2017. p. 45-52.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Johnson, A & Davidson, CI 2017, Chemistry of stormwater runoff from a large green roof in Syracuse, NY. in International Conference on Sustainable Infrastructure 2017: Methodology - Proceedings of the International Conference on Sustainable Infrastructure 2017. American Society of Civil Engineers (ASCE), pp. 45-52, 2017 International Conference on Sustainable Infrastructure: Methodology, ICSI 2017, New York, United States, 10/26/17. https://doi.org/10.1061/9780784481196.005
Johnson A, Davidson CI. Chemistry of stormwater runoff from a large green roof in Syracuse, NY. In International Conference on Sustainable Infrastructure 2017: Methodology - Proceedings of the International Conference on Sustainable Infrastructure 2017. American Society of Civil Engineers (ASCE). 2017. p. 45-52 https://doi.org/10.1061/9780784481196.005
Johnson, Alexander ; Davidson, Cliff Ian. / Chemistry of stormwater runoff from a large green roof in Syracuse, NY. International Conference on Sustainable Infrastructure 2017: Methodology - Proceedings of the International Conference on Sustainable Infrastructure 2017. American Society of Civil Engineers (ASCE), 2017. pp. 45-52
@inproceedings{bd489a2fd8484a4ebcdf170c9ed337a1,
title = "Chemistry of stormwater runoff from a large green roof in Syracuse, NY",
abstract = "A green roof can provide a wide variety of ecological benefits in urban environments such as reducing the amount of stormwater runoff. In addition, the growth medium may filter contaminated rainwater, providing runoff that is cleaner than the incoming rain. However, the growth medium might contribute other contaminants, thereby increasing the concentration relative to the rainwater. Thus, field experiments are needed to determine which contaminants are filtered out and which are leached from the growth medium during large rainstorms. It is also possible that some contaminants deposited from the atmosphere are picked up by the runoff. To investigate these issues, we determined the chemistry of stormwater runoff from two adjacent rooftops: A 1.5 acre extensive green roof on the Onondaga County Convention Center and a similarly sized gray roof on the war memorial sports arena, both located in downtown Syracuse, New York. We assumed that the same atmospheric contaminants depositing on the green roof are also depositing on the gray roof. This allowed us to compare concentrations of chemical species in the rain, green roof runoff, and gray roof runoff to determine which contaminants are contributed by the rain, by leaching from the growth medium, and by atmospheric deposition. Results from storms sampled in 2014, 2015, and 2016 suggest that sulfate and copper are leached from the growth medium while lead is filtered. Additional experiments will be conducted to better understand the leaching potential of the green roof.",
author = "Alexander Johnson and Davidson, {Cliff Ian}",
year = "2017",
month = "1",
day = "1",
doi = "10.1061/9780784481196.005",
language = "English (US)",
pages = "45--52",
booktitle = "International Conference on Sustainable Infrastructure 2017",
publisher = "American Society of Civil Engineers (ASCE)",
address = "United States",

}

TY - GEN

T1 - Chemistry of stormwater runoff from a large green roof in Syracuse, NY

AU - Johnson, Alexander

AU - Davidson, Cliff Ian

PY - 2017/1/1

Y1 - 2017/1/1

N2 - A green roof can provide a wide variety of ecological benefits in urban environments such as reducing the amount of stormwater runoff. In addition, the growth medium may filter contaminated rainwater, providing runoff that is cleaner than the incoming rain. However, the growth medium might contribute other contaminants, thereby increasing the concentration relative to the rainwater. Thus, field experiments are needed to determine which contaminants are filtered out and which are leached from the growth medium during large rainstorms. It is also possible that some contaminants deposited from the atmosphere are picked up by the runoff. To investigate these issues, we determined the chemistry of stormwater runoff from two adjacent rooftops: A 1.5 acre extensive green roof on the Onondaga County Convention Center and a similarly sized gray roof on the war memorial sports arena, both located in downtown Syracuse, New York. We assumed that the same atmospheric contaminants depositing on the green roof are also depositing on the gray roof. This allowed us to compare concentrations of chemical species in the rain, green roof runoff, and gray roof runoff to determine which contaminants are contributed by the rain, by leaching from the growth medium, and by atmospheric deposition. Results from storms sampled in 2014, 2015, and 2016 suggest that sulfate and copper are leached from the growth medium while lead is filtered. Additional experiments will be conducted to better understand the leaching potential of the green roof.

AB - A green roof can provide a wide variety of ecological benefits in urban environments such as reducing the amount of stormwater runoff. In addition, the growth medium may filter contaminated rainwater, providing runoff that is cleaner than the incoming rain. However, the growth medium might contribute other contaminants, thereby increasing the concentration relative to the rainwater. Thus, field experiments are needed to determine which contaminants are filtered out and which are leached from the growth medium during large rainstorms. It is also possible that some contaminants deposited from the atmosphere are picked up by the runoff. To investigate these issues, we determined the chemistry of stormwater runoff from two adjacent rooftops: A 1.5 acre extensive green roof on the Onondaga County Convention Center and a similarly sized gray roof on the war memorial sports arena, both located in downtown Syracuse, New York. We assumed that the same atmospheric contaminants depositing on the green roof are also depositing on the gray roof. This allowed us to compare concentrations of chemical species in the rain, green roof runoff, and gray roof runoff to determine which contaminants are contributed by the rain, by leaching from the growth medium, and by atmospheric deposition. Results from storms sampled in 2014, 2015, and 2016 suggest that sulfate and copper are leached from the growth medium while lead is filtered. Additional experiments will be conducted to better understand the leaching potential of the green roof.

UR - http://www.scopus.com/inward/record.url?scp=85035219907&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85035219907&partnerID=8YFLogxK

U2 - 10.1061/9780784481196.005

DO - 10.1061/9780784481196.005

M3 - Conference contribution

SP - 45

EP - 52

BT - International Conference on Sustainable Infrastructure 2017

PB - American Society of Civil Engineers (ASCE)

ER -