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The Significance of Scope 3 GHG Emissions in Construction Projects in Korea: Using EIA and LCA

by 1 and 2,*
1
Leo Engineering Firm, 42 Jangmi-ro, Bundang-gu, Seongnam-si 13496, Korea
2
SMaRT-Eco Consulting Firm, 630 Gaepo-ro, Gangnam-gu, Seoul 06338, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Chris Swanston
Climate 2021, 9(2), 33; https://doi.org/10.3390/cli9020033
Received: 21 December 2020 / Revised: 26 January 2021 / Accepted: 17 February 2021 / Published: 18 February 2021
(This article belongs to the Special Issue Greenhouse Gas Emissions from Natural and Artificial Systems)
In Korea, a greenhouse gas (GHG) environmental impact assessment (EIA) has been conducting since 2012, which sets the evaluation procedures and methods for GHG items during the EIA. However, the current EIA on GHG emissions can support wrong decision-making because the evaluation does not consider Scope 3 GHG emissions. Accordingly, this study proposed the life cycle EIA (LCEIA) method to identify changes in GHG emissions that need to be managed by considering Scope 3 GHG emissions in construction projects. The LCEIA method incorporates life cycle CO2 (LCCO2) including Scope 1, Scope, and Scope 3 GHG emissions using the concept of life cycle assessment (LCA) into the scoping step of the EIA process. The case study was conducted using existing EIA on GHG emission and LCEIA methodology for a development project in Gwangyang City. Scenario 1 is defined as an approach that calculates GHG emissions using the existing EIA method, and scenario 2 is also defined as a process using the LCEIA method. Results reveal that Scenario 2, including Scope 3 GHG emissions, had 46.4−51.2% more GHG emissions than Scenario 1. Sensitivity analysis for electricity and liquefied natural gas (LNG) density was also performed. Although the change in the carbon emission factor of electricity had a slightly sensitive effect on the research results, the LNG density was found to be less sensitive. This study believes the importance of switching to an EIA reflecting life cycle carbon dioxide (LCCO2) to calculate the exact amount of GHG emissions for construction work. View Full-Text
Keywords: environmental impact assessment; life cycle assessment; Scope 3 GHG emissions; construction project; climate change environmental impact assessment; life cycle assessment; Scope 3 GHG emissions; construction project; climate change
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MDPI and ACS Style

Kim, K.-T.; Kim, I. The Significance of Scope 3 GHG Emissions in Construction Projects in Korea: Using EIA and LCA. Climate 2021, 9, 33. https://doi.org/10.3390/cli9020033

AMA Style

Kim K-T, Kim I. The Significance of Scope 3 GHG Emissions in Construction Projects in Korea: Using EIA and LCA. Climate. 2021; 9(2):33. https://doi.org/10.3390/cli9020033

Chicago/Turabian Style

Kim, Kyeong-Tae; Kim, Ik. 2021. "The Significance of Scope 3 GHG Emissions in Construction Projects in Korea: Using EIA and LCA" Climate 9, no. 2: 33. https://doi.org/10.3390/cli9020033

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