Expansion of Hong Kong International Airport into a Three-Runway System

General Impact Monitoring	DCM Impact Monitoring		Post-construction Monitoring
		Early Regular DCM Monitoring
		Regular DCM Monitoring

Note:

1.	Regular DCM Water Quality Monitoring commenced on 2 November 2017.
2.	Station SR2 is a control station during flood tide.
3.	For details, please refer to the Water Quality Baseline Monitoring Report.
4.	Due to completion of DCM works, the regular DCM monitoring was ceased on 24 June 2021.
5.	Regular DCM monitoring was subsequently resumed on 11 January 2022 as DCM works restarted.
6.	Based on the construction programme with seawall completion, 6 impact stations, namely IM3, IM4, IM5, IM6, IM8 & IM9, were terminated in accordance with Table 5-2 of the Updated EM&A Manual, starting from 25 January 2022. With the removal of enhanced silt curtain, 5 impact monitoring stations namely IM1, IM7, IM10, IM11 & IM12, were relocated back to their original locations and the location for IM2 was slightly adjusted starting from 25 January 2022.
7.	Due to the completion of all marine-based DCM works within April 2022, Regular DCM Monitoring was ceased at all monitoring stations starting from 28 April 2022.