Table 1. Estimation conditions based on survey and emission factors used by life cycle stage

Emission stage	Category 1	Category 2	Estimation condition	Quantity	Emission factor	Source
Upstream	Material production	Food & beverage containers	Disposable paper water cups	3.52kg (4,040 units)	1.444959kgCO2eq/kg	Ecoinvent 3.12
		Printed paper materials	General printed paper materials (All items)	120.63kg (28,451 units)	2.851040kgCO2eq/kg	Ecoinvent 3.12
		Printed banners	General synthetic resin banners	23.27kg	3.316230kgCO2eq/kg	Ecoinvent 3.12
	Energy use	Rehearsal	Diesel vehicle power generator	3,000kWh	0.706050kgCO2eq/kWh	Public sector GHG target management guidelines and generator standard [11]
Core	Energy use	Main event	Diesel vehicle power generator	10,200kWh	0.706050kgCO2eq/kWh
		Staff	Internal combustion engine based vehicle (diesel)	188 people	0.248500kgCO2eq/km	Korea Environment Institute [12]
	Transportation	Metropolitan area attendees	Round trip travel	3,994 people	2.363560kgCO2eq/person	Korea Environment Institute [12] and National modal share standard
		Non-metropolitan attendees	Round trip travel	1,006 people	16.269237kgCO2eq/person
	Accommodation	Attendee room accommodation	Hotel stay for long-distance attendees	55 room.night	55.8kgCO2eq/room.night	UK Department of Environment, Foods and Rural Affairs [10]
Downstream	Waste Treatment	Food & beverage containers	Paper cup incineration	3.52kg	0.7204kgCO2eq/kg	Korea Environmental Industry & Technology Institute (KEITI)[13]
		Printed paper materials	General waste paper landfill and incineration	120.63kg	1.041kgCO2eq/kg	Korea Environmental Industry & Technology Institute (KEITI)[13]
		Printed banners	Waste synthetic resin incineration (Mixed)	23.27kg	2.212570kgCO2eq/kg	Korea Environmental Industry & Technology Institute (KEITI)[13]