In accordance with the
approved EM&A Manuals, 24-hour Total Suspended Particulates (TSP) level and
Leq (30min) at the designated monitoring stations is required.
Impact 24-hour TSP monitoring should be carried out at least once every 6 days.
In case of complaints, 1-hour TSP monitoring should be carried out at least 3
times per 6 days when the highest dust impacts are likely to occur. Leq (30min) monitoring is conducted for at least once a
week during the construction phase between 0700 and 1900 on normal weekdays.
The Action and Limit Levels of the air quality monitoring and noise monitoring
are given in Appendix C.
2.2.1
According to the EM&A Manual, three
monitoring locations for air quality monitoring and noise monitoring, namely
KTD1, KTD2 and KER1, are covered by this Contract within the South Apron Area
of Former Kai Tak Airport. The other two air quality
monitoring locations and two noise monitoring locations which are identified in
Cha Kwo Ling area, are farther than 500m and 300m
away from the site boundary respectively and thus not covered by this Contract.
The monitoring works in Cha Kwo Ling area are covered
by other Contract(s) respectively.
2.2.2
According to the approved alternative baseline
air quality and noise monitoring locations (EPD reference: EP2/K19/A/21 Pt.5),
the original monitoring locations (KTD1, KTD2 and KER1) are proposed to be
replaced by alternative monitoring locations (KTD1a, KTD2a and KER1a).
2.2.3
According to the approved relocation of
monitoring location KER1a (EPD reference: () in EP2/K19/A/21 Pt.5), the
monitoring location KER1a are proposed to be relocated by alternative
monitoring locations KER1b.
2.2.4
According to the approved relocation of
monitoring location KTD2a (EPD reference: () in EP2/K19/A/21 Pt.6), the
monitoring location KTD2a are proposed to be relocated by alternative
monitoring locations KTD2b.
2.2.5
According to the approved relocation of monitoring
location KTD2b (EPD reference: () in EP2/K19/A/21 pt.7), the monitoring
location KTD2b are proposed to be relocated by alternative monitoring location
KTD2c for air quality monitoring.
2.2.6
The most updated locations are summarized in Table 2.1
and shown in Figure
2.
2.3.1
No Action and Limit Level exceedance for 24-hr TSP was recorded in the
reporting period at all monitoring stations.
2.3.2 No Action / Limit Level exceedance for construction noise was recorded in
the reporting period at all monitoring stations.
2.3.3 No raining and wind with speed over 5 m/s was observed during noise
monitoring according to the onsite observation.
2.3.4 During the reporting period, at KTD1a, project related construction
activities and road traffic along Shing Fung Road and
Shing Cheong Road were observed in the surroundings.
At KTD2b / KTD2c, road traffic along the Kwun Tong
By-pass and non-project related construction activities at the nearby
construction site was observed. At KER1b, project related construction activities,
road traffic along Cheung Yip Street and non-project related construction
activities at the nearby construction site was observed. Major noise sources
including noise emission from plant & PME and some other construction
activities, travel of vehicles, loading and unloading of C&D waste were
observed in the site. The above factors may affect the monitoring results.
2.3.5 Graphical presentation of the monitoring data in the reporting period is
presented in Appendix D.
2.4
Comparison of Monitoring Results with EIA
Predictions
2.4.1 The monitoring data was compared with the EIA predictions as summarized
in Table 2.2
and Table
2.3.
2.4.3 The 24-hour TSP monitoring result of KTD1a on
15 April 2020 exceeded the prediction in the approved EIA report. No project
related dust source was observed during the site monitoring. The discrepancy
between the 24-hour TSP concentration and EIA Prediction in KTD1a is considered
due to dust source from the non-project related construction activities near
the monitoring station and the road traffic along Shing
Fung Road.
2.4.4 The noise monitoring results in the reporting
months did not exceed the Maximum Predicted Mitigated Construction Noise Level in
the approved Environmental Impact Assessment (EIA) Report and no Action / Limit
Level exceedance was recorded in the reporting period.