SOURCE

Source of Water Quality Impact during Construction Phase

	Construction runoff containing high loading of suspended solids (SS) and contaminants from runoff and erosion from site surfaces, earth working areas and stockpiles demolition of existing infrastructures for the existing SENT Landfill tunnel excavation for the twin draining tunnel
	Wastewater generated from construction activities
	Sewage generated from the workforce

Source of Water Quality Impact during Operation/Restoration Phase

	Uncontrolled discharge of leachate from the active tipping area into surface water
	Sub-surface off-site migration of leachate into groundwater and marine water due to potential pin holes and defecte seams in the liner
	Discharge of improper treated effluent leachate from the LTP
	Wastewater generated from workforce

Source of Water Quality Impact during Aftercare phase

Uncontrolled discharge of leachate from the active tipping area into surface water