8.1
Summary of exceedance is provided in Appendix L.
8.2
No Action/Limit Level exceedance was recorded for air quality (24-hr
TSP) and construction noise.
8.3
For 1-hour TSP monitoring, no Limit Level exceedance was recorded. Two
Action Level exceedance was recorded at AMS1 on 17 January 2018.
8.4
According to the investigation, the exceedances are considered not due
to the Contract due to the following reasons:
1)
No observable dust source from construction activity was observed;
2)
High Air Quality Health Index (AQHI) according to EPD (AQHI recorded at
EPD’s Air Quality Monitoring Station in Tung Chung during the 1-hr TSP
monitoring (8:32-14:20) on 17 January 2018 at AMS1 was ranged from (6 to 10+).
The AQHI was recorded with increasing scale from moderate to serious during the
monitoring period which was the dominating factor to the high TSP result;
3)
Dismantling and retrieving metal casing supports of the temporary
platform with insignificant air quality impacts were conducted at P69-70 which
is the nearest site to the monitoring station (AMS1) under Contract No.
HY/2011/09 on 17 January 2018 during the monitoring period (8:32-14:20), and no
exceedance for the 1st 1-hr TSP (08:32-09:32) was recorded.
8.5
All water quality monitoring was conducted as scheduled in the reporting
month. There is one Action Level and no Limit Level exceedances were recorded for
suspended solids. No Action/Limit Level exceedance for dissolved oxygen and
turbidity were recorded.
8.6
According to the investigation, the exceedances are considered not due
to the Contract due to the following reasons:
1)
No pollution discharge from construction activity was observed;
2)
The exceeded results were similar or within the ranges baseline
monitoring results;
3)
Sediment plume due to natural fluctuation of shallow water was observed;
4)
Localized sediment plume due to the rough water condition was observed.
Summary of Environmental Complaint
8.7
No environmental related complaints were received in the reporting month.
The Complaint Log is attached in Appendix
P.
8.8
There was one prosecution or notification of summons received since the Contract
commencement. Summary of successful prosecution as attached in Appendix Q.