2.
EM&A
REQUIREMENTS
2.1
Summary of
EM&A Requirements
2.1.1
The EM&A programme was undertaken in accordance
with the Updated EM&A Manual for HKBCF (Version 1.0). It should be noted
that the air quality and noise monitoring works for the Contract are covered by
Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao-Bridge HKBCF – Passenger Clearance
Building” and Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong
Link Road – Section between Scenic Hill and HKBCF”. The ET of the Contract or
another ET of the HZMB project is required to conduct impact air quality
monitoring at AMS2, AMS3B, AMS6 and AMS7B (According to the revised Contract
Specific EM&A Manual (Rev. 9), the monitoring results for AMS2 and AMS3B
will be reported in the monthly EM&A Reports prepared for Contract Nos.
HY/2013/03 start from February 2018. The implementation of environmental
monitoring for air quality, noise, water quality and marine ecology (dolphin
monitoring) have been conducting by the ET for Contract No. HY/2013/01 of which
the air quality monitoring station (AMS7) have been re-located to the
alternative air quality monitoring station (AMS7B) since 06 February 2018), and
noise monitoring at NMS2 and NMS3B, water quality monitoring at the locations
shown in Figure 3 and ecological
monitoring as shown in Figure 4 as
part of EM&A programme if these monitoring stations are no longer covered
under Contract Nos. HY/2013/01 and HY/2011/03. However, this is subject to
ENPO’s final decision on which ET should carry out the monitoring work at these
stations.
The ET of the Contract or
another ET of the HZMB project is required to conduct impact ecological monitoring at 24 transects as part of EM&A programme if these
transects are no longer covered under Contract No. HY/2013/01. The impact ecological
monitoring should adopt line-transect vessel survey
method. The survey follows pre-set and fixed transect lines in the two areas
defined by AFCD as: Northeast Lantau survey area
and Northwest Lantau survey area. The co-ordinates for the
transect lines and layout map are shown as in Figure 4.
2.1.2
A summary of air and noise monitoring locations are
presented in Table 2.1. The location
of air quality and noise monitoring stations are shown as in Figure 1 and Figure 2, respectively.
Table 2.1 Air Quality and Noise Monitoring Locations
|
Environmental Monitoring |
Identification No. |
Location Description |
|
Air Quality |
AMS2(1)
(4) |
Tung Chung
Development Pier |
|
AMS3B(1)
(4) |
Site
Boundary of Site Office Area at Work Area WA2 |
|
|
AMS6(1) |
Dragonair/CNAC (Group) Building (A80) |
|
|
AMS7(1) (5) |
Hong Kong SkyCity Marriott Hotel |
|
|
AMS7B(1) (5) |
3RS Site
Offices |
|
|
Noise |
NMS2(2) |
|
|
NMS3B(2) (3) |
Site Boundary of Site Office Area at WA2 |
Remarks:
(1)
The ET of this Contract should conduct impact air
quality monitoring at the AMS listed in the table as part of EM&A programme
according to latest notification from ENPO when the monitoring station(s)
is/are no longer covered by another ET of the HZMB project.
(2)
The ET of this Contract should conduct impact noise
monitoring at the NMS listed in the table as part of EM&A programme
according to the latest notification from ENPO when the monitoring station(s)
is/are no longer covered by another ET of the HZMB project.
(3)
The Action and Limit Levels for schools will be
applied for this alternative monitoring location.
(4)
According to the revised Contract Specific EM&A
Manual (Rev. 9), the monitoring results for AMS2 and AMS3B will be reported in
the monthly EM&A Reports prepared for Contract Nos. HY/2013/03 start from
Feb 2018.
(5)
Air quality monitoring station (AMS7) have been
re-located to the alternative air quality monitoring station (AMS7B) since 06
Feb 2018
2.1.3
The water monitoring works for the Contract are
covered by Contract No. HY/2013/01 “Hong Kong-Zhuhai-Macao-Bridge HKBCF –
Passenger Clearance Building”. The water quality monitoring station (SR3, SR10A
and SR10B(N)) had been slightly re-located since 22
December 2017. A summary of water quality monitoring stations are presented in Table 2.2. The location of water
quality monitoring stations are shown as in Figure 3.
................................................................... Table
2.2 Water Quality Monitoring Stations
|
Station |
Description |
East |
North |
|
IS5 |
Impact
Station (Close to HKBCF construction site) |
811579 |
817106 |
|
IS(Mf)6 |
Impact
Station (Close to HKBCF construction site) |
812101 |
817873 |
|
IS7 |
Impact Station (Close to HKBCF construction site) |
812244 |
818777 |
|
IS8 |
Impact Station
(Close to HKBCF construction site) |
814251 |
818412 |
|
IS(Mf)9 |
Impact
Station (Close to HKBCF construction site) |
813273 |
818850 |
|
IS10(N) |
Impact Station (Close to HKBCF construction site) |
812942 |
820881 |
|
IS(Mf)11 |
Impact
Station (Close to HKBCF construction site) |
813562 |
820716 |
|
IS(Mf)16 |
Impact
Station (Close to HKBCF construction site) |
814328 |
819497 |
|
IS17 |
Impact
Station (Close to HKBCF construction site) |
814539 |
820391 |
|
SR3 |
Sensitive
receivers (San Tau SSSI) |
810525 |
816456 |
|
SR3(N) |
Sensitive
receivers (San Tau SSSI) |
810689 |
816591 |
|
SR4(N) |
Sensitive
receivers (Tai Ho) |
814705 |
817859 |
|
SR5(N) |
Control Station |
812569 |
821475 |
|
SR6 |
Sensitive receivers (Sha Chau and Lung
Kwu Chau Marine Park) |
805837 |
821818 |
|
SR7 |
Sensitive
receivers (Tai Mo Do) |
814293 |
821431 |
|
SR10A |
Sensitive
receivers (Ma Wan FCZ) 1 |
823741 |
823495 |
|
SR10A(N) (1) |
Sensitive
receivers (Ma Wan FCZ) 1 |
823644 |
823484 |
|
SR10B(N) |
Sensitive
receivers (Ma Wan FCZ) 2 |
823683 |
823187 |
|
SR10B(N2) (1) |
Sensitive
receivers (Ma Wan FCZ) 2 |
823689 |
823159 |
|
CS(Mf)3(N) |
Control Station |
808814 |
822355 |
|
CS(Mf)5 |
Control
Station |
817990 |
821129 |
|
CS4 |
Control
Station |
810025 |
824004 |
|
CS6 |
Control
Station |
817028 |
823992 |
|
CSA(2] |
Control
Station |
818103 |
823064 |
Note:
(1) Additional
monitoring station for Ma Wan FCZ
(2) Additional control monitoring station
for Ma Wan FCZ
Remarks:
The ET of the Contract should conduct impact
water quality monitoring at the WQMs listed in the table as part of EM&A
programme according to latest notification from ENPO if water quality
monitoring is no longer covered by another ET of the HZMB project. The ET of
the Contract shall communicate and share the monitoring data to the ET(s) of
the other contracts if the water quality monitoring station(s) is/are as part
of EM&A programme. SR3(N),
SR10A(N) and SR10B(N2) are alternative WQM Stations.
2.2
Monitoring
Requirements
2.2.1
The monitoring requirements, monitoring equipment,
monitoring parameters, frequency and duration, monitoring methodology,
monitoring schedule, meteorological information are detailed in the monthly
EM&A Reports prepared by
Contract No. HY/2013/01.
2.3
Action and
Limit Levels
2.3.1
The
Action and Limit Levels for 1-hr TSP and 24-hr TSP are provided in Table 2.3 and Table 2.4 respectively.
Table 2.3
Action and Limit Levels for 1-hour TSP
|
Monitoring Station |
Action Level (µg/m³) |
Limit Level (µg/m³) |
|
AMS2 |
374 |
500 |
|
AMS3B |
368 |
|
|
AMS6 |
360 |
|
|
AMS7 |
370 |
|
|
AMS7B |
370 |
Table 2.4 Action and Limit Levels for 24-hour TSP
|
Monitoring Station |
Action Level (µg/m³) |
Limit Level (µg/m³) |
|
AMS2 |
176 |
260 |
|
AMS3B |
167 |
|
|
AMS6 |
173 |
|
|
AMS7 |
183 |
|
|
AMS7B |
183 |
2.3.2
The Action and Limit Levels for construction noise
are defined in Table 2.5.
Table 2.5
Action and Limit Level for Construction Noise
|
Monitoring Station |
Action Level |
Limit Level |
|
For the Time Period 0700-1900 hrs. on |
||
|
NMS2 |
When one documented complaint is received |
75.0 dB (A) Leq (30 min.) |
|
NMS3B |
70.0 dB (A) Leq (30 min.)* |
|
Notes:
If works are to be carried
out during restricted hours, the conditions stipulated in the construction
noise permit issued by the Noise Control Authority have to be followed.
*
Reduce to 70 dB(A) for schools and 65 dB(A) during
school examination period.
2.3.3
The Action and Limit Levels for Water Quality are
provided in Table 2.6.
Table 2.6 Action and Limit
Levels for Water Quality
|
Parameters |
Action |
Limit |
|
DO in mg/L (Surface, Middle & Bottom) |
Surface and Middle 5.0 Bottom 4.7 |
Surface and Middle = 4.2 (except 5
mg/L for FCZ) Bottom = 3.6 |
|
SS in mg/L (depth-averaged) at all monitoring stations and control stations |
23.5 and 120% of upstream control
station's SS at the same tide of the same day* |
34.4 and 130% of upstream control
station's SS at the same tide of the same day and 10mg/L for WSD Seawater
intakes* |
|
Turbidity in NTU (depth averaged) |
27.5 and 120% of upstream control
station's turbidity at the same tide of the same day* |
47.0 and 130% of upstream control
station's turbidity at the same tide of the same day* |
* Remarks: Reference
is made to EPD approval of adjustment of water quality assessment criteria
issued and became effective on 18 February 2013.
Notes:
1.
”depth-averaged"
is calculated by taking the arithmetic means of reading of all three depths.
2.
For
DO, non-compliance of the water quality limits occurs when monitoring result is
lower than the limits.
3.
For
turbidity, SS, non-compliance of the water quality limits occurs when
monitoring result is higher than the limits.
4.
All
the figures given in the table are used for reference only and the EPD may
amend the figures whenever it is considered as necessary.
5.
The
1%-ile of baseline data for dissolved oxygen (surface
and middle) and dissolved oxygen (bottom) are 4.2mg/L and 3.6mg/L respectively.
2.3.4
The
Action and Limit Levels for Ecological Monitoring are provided in Table 2.7 and Table 2.8.
Table
2.7 Action and Limit Levels for Ecological Monitoring - Approach to Define
Action Level (AL) and Limit Level (LL)
|
|
North
Lantau Social Cluster |
|
|
NEL |
NWL |
|
|
Action Level |
(STG < 70%
of baseline) & (ANI < 70%
of baseline) |
(STG < 70%
of baseline) & (ANI < 70%
of baseline) |
|
Limit Level |
[(STG <
40% of baseline) & (ANI < 40% of baseline)] AND [ (STG <
40% of baseline) & (ANI < 40% of baseline)] |
|
For North Lantau Social Cluster, action level
will be trigger if either NEL or NWL fall below the criteria; limit level will
be triggered if both NEL and NWL fall below the criteria.
Table
2.8 Derived Value of Action Level (AL) and Limit Level (LL) for Ecological
Monitoring
|
|
North
Lantau Social Cluster |
|
|
NEL |
NWL |
|
|
Action Level |
(STG < 4.2) & (ANI < 15.5 ) |
(STG
< 6.9) & (ANI < 31.3) |
|
Limit Level |
[(STG < 2.4) & (ANI <8.9)]
AND [ (STG < 3.9) & (ANI < 17.9)] |
|
The ET of this Contract should conduct impact
ecological monitoring as part of EM&A programme according to latest
notification from ENPO when the monitoring transect(s) is/are no longer covered
by another ET of the HZMB project.
2.3.5
If exceedance(s)
at these transect(s) is/are recorded by the ET of the Contract or referred by
the other ET under the HZMB project to the Contract, the ET of the Contract
will carry out an investigation and findings will be reported in the quarterly
EM&A Report.
2.4
Event and
Action Plans
2.4.1
The event and action plans are provided in Appendix D.
2.5
Mitigation
Measures
2.5.1
Environmental mitigation measures for the contract
were recommended in the approved EIA Report. Appendix E lists the recommended mitigation measures and the
implementation status.