2.
SUMMARY OF
EM&A REQUIREMENTS AND MONITORING RESULTS
2.1.1
The Quarterly EM&A
programme was undertaken in accordance with the EM&A Manual. It should be
noted that the air quality, noise, water quality and ecology monitoring works
are covered by this contract.
Air
quality Monitoring
2.1.2
1-hour Total
Suspended Particulates (TSP) levels should be measured at the designated air
quality monitoring stations to ensure that any deteriorating air quality could
be readily detected and timely action shall be
undertaken to rectify such situation. Impact 1-hour TSP monitoring was
conducted for at least three times every 6 days when the highest dust impact
occurs.
Noise
Monitoring
2.1.3
Leq (30min) monitoring
is conducted at least once a week when there are Project-related construction
activities being undertaken within a radius of 300 m from the monitoring
stations. The monitoring is conducted during the construction phase between
0700 and 1900 on normal weekdays at the designated monitoring locations.
Water quality Monitoring
2.1.4
Turbidity (in NTU),
pH, DO (in mg/L and % of saturation), Temperature (in °C), Salinity (in ppt) and Suspended Solids are conducted for three days per week at mid-flood
and mid-ebb with sampling and measurement at the designated monitoring
stations.
Ecology
Monitoring
2.1.5
Ardeid night roost
monitoring was conducted once a month in areas within 100 m from the Project
boundary to monitor the effectiveness of proposed mitigation measures and
detect any unpredicted indirect ecological impacts arising from the Project.
2.1.6
Ecological
monitoring of birds was conducted monthly during the quarter at point count
sites and transect routes along the wetland habitats in Fung Lok Wai and Nam
Sang Wai as well as along Shan Pui River and Kam Tin
River within 500 m from the Project boundary.
2.2.1
The air quality and
noise monitoring are summarized in Table 2.1. The locations of the air quality and noise monitoring stations shown in
Figure 2 and Figure 3, respectively.
2.2.2
The coordinates of water
quality monitoring locations are summarized in Table 2.2. The locations of the water quality monitoring stations shown in Figure 4.
2.3.1
Graphical
presentation of the monitoring data in the reporting period is presented in Appendix D.
Air
quality Monitoring
2.3.2
1-hour TSP impact
monitoring at AM1 and AM2 were carried out in the reporting period, the
monitoring results are reported in the monthly EM&A Report prepared for
this Contract.
2.3.3
No Action and Limit
Level exceedance was recorded for air quality monitoring in the reporting period.
Noise
Monitoring
2.3.4
Construction noise
monitoring were carried out in the reporting period, the monitoring results for
CM1, CM2 and CM3 are reported in the monthly EM&A Reports prepared for this
Contract.
2.3.5
No Action and Limit
Level exceedance was recorded for construction noise monitoring in the
reporting period.
2.3.6
No raining and wind
with speed over 5 m/s was observed during noise monitoring according to the
onsite observation.
2.3.7
During the noise
monitoring period, at CM2, road traffic from the squatter house at the west of
Yuen Long STW was observed, at CM3, road traffic from the Nam Sang Wai Road was
observed. No effect that arose from the other special phenomena and work
progress of the concerned site for CM1 was noted during the current monitoring period.
Water quality Monitoring
2.3.8
Water quality
monitoring were carried out in the reporting period, the monitoring results for
M1, M2 and M3 are reported in the monthly EM&A Reports prepared for this
Contract.
2.3.9
During the
reporting period, no Action and Limit Level exceedance was recorded for
Dissolved Oxygen, Turbidity, and Suspended Solids. Number of water quality exceedance
recorded in the reporting period at each impact stations is summarized in Table 2.3.
2.3.10
Typhoon Signal No.
8 was hoisted on 9 October 2021. Due to safety concerns, the water quality monitoring
on 9 October 2021 has been cancelled. Typhoon Signal No. 3 was hoisted on 12 October
2021. Due to safety concerns, the water quality monitoring on 12 October 2021
has been cancelled.
Ecology
Monitoring
2.3.11
Ardeid night roost
monitoring and ecological bird monitoring were carried out in the reporting
period. The monitoring results are reported in the monthly EM&A Reports
prepared for this Contract.
2.3.12
Results of the
ardeid night roost monitoring showed that the two confirmed ardeid night roosts
(ANR 1 and ANR 2) during the pre-construction survey, were still observed to be
active from October 2021 to December 2021. No Action / Limit Level exceedance
at NMS1 and NMS2 was recorded during the reporting period.
2.3.13
Results of the
ecological bird monitoring recorded no exceedance in Action /
Limit Level during the
reporting period.
2.4.1
The Action and
Limit Levels for air quality, noise, water quality and ecology monitoring have
been set and are presented in Appendix C.
2.5.1
The event and
action plans for air quality, noise, water quality and ecology monitoring are
presented in Appendix E.
2.6.1
The Contractor had
implemented environmental mitigation measures and requirements as stated in the
EIA Report, the EP and EM&A Manual. The implementation status of the
environmental mitigation measures during the reporting period is summarized in Appendix G.