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Description: New GHG Methodology to Estimate/Quantify Sewer Methane
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Description: New GHG Methodology to Estimate/Quantify Sewer Methane
New GHG Methodology to Estimate/Quantify Sewer Methane

New GHG Methodology to Estimate/Quantify Sewer Methane

New GHG Methodology to Estimate/Quantify Sewer Methane

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Description: New GHG Methodology to Estimate/Quantify Sewer Methane
New GHG Methodology to Estimate/Quantify Sewer Methane
Abstract
Introduction. the Intergovernmental Panel on Climate Change (IPCC) has identified that wastewater in closed, underground sewers in the developed world are not a significant methane (CH4) source (IPCC 2006). Other greenhouse gas (GHG) protocols have followed IPCC’s lead and have ignored sewer CH4. This simplification has been contradicted by research (Guisasola, 2008; Foley, 2009; Guisasola, 2009; Gutierrez, 2009; van Voorthuizen, 2011; Willis, 2012; and Liu, 2014) where significant CH4 emissions have been repeatedly detected from both pressure mains and gravity sewers.The Water Research Foundation’s (WRF, formerly WE&RF and WERF) Conveyance Asset Prediction System (CAPS) project (WERF Project #U5R12) developed a methodology for estimating collection-system methane (CH4) on a sewershed-wide basis. The method uses hydraulic-model output at average flows, actual sewage temperatures and actual flow rates as input.A Knowledge Development Forum (a workshop that is not for CEU credit) entitled “Sewer-Methane GHG-Methodology Standardization” will be held on Saturday at WEFTEC-2018 in New Orleans. The forum objective is to drive toward WEF-industry consensus on a new greenhouse gas (GHG) accounting methodology for adoption by ICLEI, the California Air Resource Board (CARB), IPCC, and other protocols. This paper summarizes the method and provides specific guidance on its use for estimating sewer-CH4 generation.
Introduction. the Intergovernmental Panel on Climate Change (IPCC) has identified that wastewater in closed, underground sewers in the developed world are not a significant methane (CH4) source (IPCC 2006). Other greenhouse gas (GHG) protocols have followed IPCC’s lead and have ignored sewer CH4. This simplification has been contradicted...
Author(s)
John WillisBill BrowerWalter GrafSudhir MurthyChris PeotPusker RegmiKeshab SharmaZhiguo Yuan
SourceProceedings of the Water Environment Federation
SubjectEmissions & Modeling
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Mar, 2018
ISSN1938-6478
SICI1938-6478(20180101)2018:2L.562;1-
DOI10.2175/193864718822846562
Volume / Issue2018 / 2
Content sourceOdors and Air Pollutants Conference
First / last page(s)562 - 569
Copyright2018
Word count207
Subject keywordsGreenhouse Gas (GHG)Collection SystemMethaneGHG Accounting

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Description: New GHG Methodology to Estimate/Quantify Sewer Methane
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Description: New GHG Methodology to Estimate/Quantify Sewer Methane
New GHG Methodology to Estimate/Quantify Sewer Methane
Abstract
Introduction. the Intergovernmental Panel on Climate Change (IPCC) has identified that wastewater in closed, underground sewers in the developed world are not a significant methane (CH4) source (IPCC 2006). Other greenhouse gas (GHG) protocols have followed IPCC’s lead and have ignored sewer CH4. This simplification has been contradicted by research (Guisasola, 2008; Foley, 2009; Guisasola, 2009; Gutierrez, 2009; van Voorthuizen, 2011; Willis, 2012; and Liu, 2014) where significant CH4 emissions have been repeatedly detected from both pressure mains and gravity sewers.The Water Research Foundation’s (WRF, formerly WE&RF and WERF) Conveyance Asset Prediction System (CAPS) project (WERF Project #U5R12) developed a methodology for estimating collection-system methane (CH4) on a sewershed-wide basis. The method uses hydraulic-model output at average flows, actual sewage temperatures and actual flow rates as input.A Knowledge Development Forum (a workshop that is not for CEU credit) entitled “Sewer-Methane GHG-Methodology Standardization” will be held on Saturday at WEFTEC-2018 in New Orleans. The forum objective is to drive toward WEF-industry consensus on a new greenhouse gas (GHG) accounting methodology for adoption by ICLEI, the California Air Resource Board (CARB), IPCC, and other protocols. This paper summarizes the method and provides specific guidance on its use for estimating sewer-CH4 generation.
Introduction. the Intergovernmental Panel on Climate Change (IPCC) has identified that wastewater in closed, underground sewers in the developed world are not a significant methane (CH4) source (IPCC 2006). Other greenhouse gas (GHG) protocols have followed IPCC’s lead and have ignored sewer CH4. This simplification has been contradicted...
Author(s)
John WillisBill BrowerWalter GrafSudhir MurthyChris PeotPusker RegmiKeshab SharmaZhiguo Yuan
SourceProceedings of the Water Environment Federation
SubjectEmissions & Modeling
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Mar, 2018
ISSN1938-6478
SICI1938-6478(20180101)2018:2L.562;1-
DOI10.2175/193864718822846562
Volume / Issue2018 / 2
Content sourceOdors and Air Pollutants Conference
First / last page(s)562 - 569
Copyright2018
Word count207
Subject keywordsGreenhouse Gas (GHG)Collection SystemMethaneGHG Accounting

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John Willis# Bill Brower# Walter Graf# Sudhir Murthy# Chris Peot# Pusker Regmi# Keshab Sharma# Zhiguo Yuan. New GHG Methodology to Estimate/Quantify Sewer Methane. Alexandria, VA 22314-1994, USA: Water Environment Federation, 2019. Web. 18 Oct. 2025. <https://www.accesswater.org?id=-299713CITANCHOR>.
John Willis# Bill Brower# Walter Graf# Sudhir Murthy# Chris Peot# Pusker Regmi# Keshab Sharma# Zhiguo Yuan. New GHG Methodology to Estimate/Quantify Sewer Methane. Alexandria, VA 22314-1994, USA: Water Environment Federation, 2019. Accessed October 18, 2025. https://www.accesswater.org/?id=-299713CITANCHOR.
John Willis# Bill Brower# Walter Graf# Sudhir Murthy# Chris Peot# Pusker Regmi# Keshab Sharma# Zhiguo Yuan
New GHG Methodology to Estimate/Quantify Sewer Methane
Access Water
Water Environment Federation
January 18, 2019
October 18, 2025
https://www.accesswater.org/?id=-299713CITANCHOR