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/2010/02 “Hong
Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works” (from September 2015 to
August 2017), HY/2013/01 “Hong Kong-Zhuhai-Macao-Bridge HKBCF – Passenger Clearance
Building” (from September 2017 to September 2018), Contract No. HY/2013/04
“Hong Kong-Zhuhai-Macao Bridge HKBCF - Infrastructure Works Stage II (Southern
Portion)” (from October 2018 to January 2019) and Contract No. HY/2011/03 “Hong
Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and
HKBCF” (from September 2015 to January 2019). The ET of the Contract or another
ET of the HZMB project is required to conduct impact air quality monitoring at
AMS2, AMS3C, AMS6 and AMS7B, and noise monitoring at NMS2 and NMS3C, 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/2013/04 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.
2.1.2 The
following tables state the specific
air quality and noise monitoring stations at which the responsibilities for
implementation of the corresponding environmental monitoring were undertaken by
which Environmental Teams during specific periods between September 2015 and
January 2019.
Table 2A Air
Quality Monitoring
|
Contract No.
(Environmental Teams responsible for implementation of the corresponding
environmental monitoring) |
Air Quality
Monitoring Station and Monitoring Period |
||||||
|
AMS2 |
AMS3B |
AMS3C# |
AMS6 |
AMS7 |
AMS7A |
AMS7B |
|
|
HY/2010/02 |
N/A |
N/A |
N/A |
N/A |
From Jan 2016 to Aug 2017 |
From Sep 2015 to Dec 2015 |
N/A |
|
HY/2013/01 |
From Sep 2017 to Sep 2018 |
From Sep 2017 to Aug 2018 |
N/A |
N/A |
From Sep 2017 to Jan 2018 |
N/A |
From Feb 2018 to Sep 2018 |
|
HY/2013/04 |
From Oct 2018 to Jan 2019 |
N/A |
From Aug 2018 to Jan 2019 |
N/A |
N/A |
N/A |
From Oct 2018 to Jan 2019 |
|
HY/2011/03 |
N/A |
N/A |
N/A |
From Sep 2015 to Jan 2019 |
N/A |
N/A |
N/A |
# The monitoring data for AMS3C and NMS3C recorded between 20
Aug 2018 and 30 Sep 2018 were reported in the relevant EM&A reports
prepared under Contract No. HY/2013/01 though the implementation
of air quality and noise monitoring at such monitoring stations was undertaken by the ET for Contract No. HY/2013/04
Table 2B Noise
Monitoring
|
Contract No.
(Environmental Teams responsible for implementation of the corresponding
environmental monitoring) |
Noise Monitoring
Station and Monitoring Period |
||
|
NMS2 |
NMS3B |
NMS3C# |
|
|
HY/2010/02 |
From Sep 2015 to Aug 2017 |
From Sep 2015 to Aug 2017 |
N/A |
|
HY/2013/01 |
From Sep 2017 to Sep 2018 |
From Sep 2017 to Aug 2018 |
N/A |
|
HY/2013/04 |
From Oct 2018 to Jan 2019 |
N/A |
From Aug 2018 to Jan 2019 |
# The monitoring data for AMS3C and NMS3C recorded between 20
Aug 2018 and 30 Sep 2018 were reported in the relevant EM&A reports
prepared under Contract No. HY/2013/01 though the
implementation of air quality and noise monitoring at such monitoring stations was undertaken by the ET for Contract No. HY/2013/04
2.1.3 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/2013/04. 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 Agriculture, Fisheries
and Conservation Department (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.
2.1.4 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 (from Feb 2018) |
|
AMS3B (1) (4) ^ |
Site Boundary of Site Office Area at Work Area WA2 (from Feb 2018 to
Aug 2018 |
|
|
AMS3C (1) (4) (6) |
Ying Tung Estate Market Rooftop (from Aug 2018) |
|
|
AMS6 (1) |
Dragonair/CNAC (Group) Building (A80) |
|
|
AMS7 (1) # |
Hong Kong SkyCity Marriott Hotel (from Jan
2016 to Jan 2018) |
|
|
AMS7A (1) # |
Chu Kong Air-Sea Union Transportation Co. Ltd. (until Dec 2015) |
|
|
AMS7B (1) (5) |
3RS Site Offices (from Feb 2018) |
|
|
Noise |
NMS2 (2) |
Seaview Crescent |
|
NMS3B (2) (3) ^ |
Site Boundary of Site Office Area at WA2 (until Aug 2018) |
|
|
NMS3C (2) (3) (7) |
Ying Tung Estate Refuse Collection Point (from Aug 2018) |
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 Limit Level 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.
(6) Air quality monitoring station (AMS3B) have been re-located to the
alternative air quality monitoring station (AMS3C) since 20 Aug 2018.
(7) Noise monitoring station (NMS3B) have been re-located to the alternative
noise monitoring station (NMS3C) since 20 Aug 2018.
# The relocation of air monitoring station AMS7A (Chu Kong
Air-Sea Union Transportation Co. Ltd.) back to the original location AMS7 (Hong
Kong SkyCity Marriott Hotel) was approved by EPD. The
relocation was completed in 30 Dec 2015 and the air monitoring at AMS7 was
started from Jan 2016.
^ 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 noise monitoring station (NMS3B) and
the meteorological station have been slightly re-located to AECOM PRE's Office
without re-branding since 01 Sept 2017 as shown below:
2.1.5 The
water monitoring works for the Contract (marine
works were conducted as silt curtain was installed on 11 May 2017 for Contract
No. HY/2013/03 and therefore, water quality impact monitoring result is
reported from May 2017) are covered by Contract No. HY/2010/02 “Hong Kong-Zhuhai-Macao
Bridge HKBCF – Reclamation Works” (from May 2017 to August 2017), Contract No. HY/2013/01
“Hong Kong-Zhuhai-Macao-Bridge HKBCF – Passenger Clearance Building” (from
September 2017 to September 2018), and Contract No. HY/2013/04 “Hong
Kong-Zhuhai-Macao Bridge HKBCF - Infrastructure Works Stage II (Southern
Portion)” (from October 2018 to January 2019). 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(N) |
Sensitive receivers (San Tau SSSI) |
810689 |
816591 |
|
SR4(N) |
Sensitive receivers (Tai Ho) |
814705 |
817859 |
|
SR5(N) |
Sensitive receivers (Artificial Reef in NE Airport) |
812569 |
821475 |
|
SR6 |
Sensitive receivers (Sha Chau and Lung Kwu
Chau Marine Park) |
805837 |
821818 |
|
SR7 |
Sensitive receivers (Tai Mo Do) |
814293 |
821431 |
|
SR10A(N)(1) |
Sensitive receivers (Ma Wan FCZ) 1 |
823644 |
823484 |
|
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.
2.1.6 Changes
on the EM&A programme were justified and verified by the ET Leader for
Contract No. HY/2010/02 and the IEC respectively on 24 March 2017, and it was
approved by EPD on 12 May 2017. The changes to the EM&A programme for the
HKBCF project effective from 15 May 2017 are shown in the following:
Water
Quality Monitoring
Current
and Alternative WQM Stations
|
WQM Station |
Description |
East |
North |
|
CS(Mf)3 |
Control Station |
809989 |
821117 |
|
CS(Mf)3(N) |
Control Station |
808814 |
822355 |
|
SR5 |
Sensitive receiver (Artificial Reef in NE Airport) |
811489 |
820455 |
|
SR5(N) |
Sensitive receiver (Artificial Reef in NE Airport) |
812569 |
821475 |
|
IS10 |
Impact Station (Close to HKBCF construction site) |
812577 |
820670 |
|
IS10(N) |
Impact Station (Close to HKBCF construction site) |
812942 |
820881 |
Remarks:
CS(Mf)3(N), SR5(N) and IS10(N) are alternative WQM
Stations.
The
locations of current and alternative WQM stations are shown in Figure 3.
Dolphin
Monitoring
Co-ordinates
of Vessel-based Transect Lines (changes are underlined):
|
Line
No. |
Easting |
Northing |
|
|
2 |
Start Point |
805476 |
820800 |
|
2 |
End Point |
805476 |
826654 |
|
3 |
Start Point |
806464 |
821150 |
|
3 |
End Point |
806464 |
822911 |
|
4 |
Start Point |
807518 |
821500 |
|
4 |
End Point |
807518 |
829230 |
|
5 |
Start Point |
808504 |
821850 |
|
5 |
End Point |
808504 |
828602 |
|
6 |
Start Point |
809490 |
822150 |
|
6 |
End Point |
809490 |
825352 |
|
7 |
Start Point |
810499 |
822000 |
|
7 |
End Point |
810499 |
824613 |
|
24 |
Start Point |
805476 |
815900 |
|
24 |
End Point |
805476 |
819100 |
Remarks:
Line No. 24 is a new vessel-based transect line for dolphin monitoring
2.1.7 The
original co-ordinates for the transect lines and layout map before the changes
of the EM&A programme are shown in Figure
4 and the new co-ordinates for the transect lines and layout map after the
changes of the EM&A programme with effect from 15 May 2017 are shown in Figure 4.
2.1.8 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 water quality monitoring stations
(SR3, SR10A and SR10B(N)) have been slightly
re-located since 22 December 2017 as shown below:
|
WQM Station |
Description |
East |
North |
|
SR3 |
Sensitive receivers (San Tau SSSI) |
810525 |
816456 |
|
SR3(N) |
Sensitive receivers (San Tau SSSI) |
810689 |
816591 |
|
SR10A |
Sensitive receivers (Ma Wan FCZ) 1 |
823741 |
823495 |
|
SR10A(N) |
Sensitive receivers (Ma Wan FCZ) 1 |
823644 |
823484 |
|
SR10B(N) |
Sensitive receivers (Ma Wan FCZ) 2 |
823683 |
823187 |
|
SR10B(N2) |
Sensitive receivers (Ma Wan FCZ) 2 |
823689 |
823159 |
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/2010/02 (from September 2015 to
August 2017), Contract No. HY/2013/01
(from September 2017 to September 2018), Contract
No. HY/2013/04 (from October 2018 to January 2019) and Contract No. HY/2011/03
(from September 2015 to January 2019).
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 |
|
|
AMS3C |
368 |
|
|
AMS6 |
360 |
|
|
AMS7 |
370 |
|
|
AMS7A |
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 |
|
|
AMS3C |
167 |
|
|
AMS6 |
173 |
|
|
AMS7 |
183 |
|
|
AMS7A |
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 Normal Weekdays |
||
|
NMS2 |
When one
documented complaint is received |
75.0 dB (A) Leq (30 min.) |
|
NMS3B |
70.0 dB (A) Leq (30 min.)* |
|
|
NMS3C |
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 monthly
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.