Contract
No. HY/2011/03
Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road
Section between Scenic Hill and Hong Kong Boundary Crossing Facilities
Quarterly EM&A Report No.
11 (Mar 2015 to May 2015)
Revision 1
Main Contractor Designer
Contents
Executive Summary
1.4 Construction
Works Undertaken During the Reporting Period
2.1 Summary
of EM&A Requirements
3....... Environmental
Monitoring and Audit
3.1 Implementation of Environmental Measures
3.2 Air Quality Monitoring Results
3.4 Water Quality
Monitoring Results
3.5 Dolphin Monitoring Results
3.6 Mudflat Monitoring Results
3.7 Solid and Liquid Waste Management Status
3.8 Environmental Licenses and Permits
4....... Environmental Complaint and Non-compliance
4.2 Summary of Environmental Complaint,
Notification of Summons and Successful Prosecution
5....... Comments,
Recommendations and Conclusion
Figures
Figure
1.1 Location
of the Site
Figure
2.1 Environmental
Monitoring Stations
Figure
2.2 Transect
Line Layout in Northwest and Northeast Lantau Survey Areas
Appendices
Appendix
A Environmental
Management Structure
Appendix
B Construction
Programme
Appendix
C Location
of Works Areas
Appendix
D Event
and Action Plan
Appendix
E Implementation
Schedule of Environmental Mitigation Measures
Appendix
F Site
Audit Findings and Corrective Actions
Appendix
G Air Quality Monitoring Data and
Graphical Plots
Appendix
H Noise Monitoring Data and Graphical
Plots
Appendix
I Water Quality Monitoring Data and
Graphical Plots
Appendix
J Dolphin
Monitoring Results
Appendix
L Summary
of Environmental Licenses and Permits
Executive Summary
The Hong Kong-Zhuhai-Macao Bridge (HZMB) Hong
Kong Link Road (HKLR) serves to connect the HZMB Main Bridge at the Hong Kong
Special Administrative Region (HKSAR) Boundary and the HZMB Hong Kong Boundary
Crossing Facilities (HKBCF) located at the north eastern waters of the Hong
Kong International Airport (HKIA).
The HKLR project has been separated into two
contracts. They are Contract No.
HY/2011/03 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road-Section between
Scenic Hill and Hong Kong Boundary Crossing Facilities (hereafter referred to
as the Contract) and Contract No. HY/2011/09 Hong Kong-Zhuhai-Macao Bridge Hong
Kong Link Road-Section between HKSAR Boundary and Scenic Hill.
China State Construction Engineering (Hong Kong)
Ltd. was awarded by Highways Department as the Contractor to undertake the
construction works of Contract No. HY/2011/03. The main works of the Contract include land
tunnel at Scenic Hill, tunnel underneath Airport Road and Airport Express Line,
reclamation and tunnel to the east coast of the Airport Island, at-grade road
connecting to the HKBCF and highway works of the HKBCF within the Airport
Island and in the vicinity of the HKLR reclamation. The Contract is part of the HKLR Project
and HKBCF Project, these projects are considered to be ¡§Designated Projects¡¨,
under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap
499) and EIA Reports (Register No. AEIAR-144/2009 and AEIAR-145/2009) were
prepared for the Project. The
current Environmental Permit (EP) EP-352/2009/D for HKLR and EP-353/2009/H for
HKBCF were issued on 22 December 2014 and 19 January 2015, respectively. These
documents are available through the EIA Ordinance Register. The construction
phase of Contract was commenced on 17 October 2012.
BMT Asia Pacific Limited has been appointed by
the Contractor to implement the Environmental Monitoring & Audit (EM&A)
programme for the Contract in accordance with the Updated EM&A Manual for
HKLR (Version 1.0) and will be providing environmental team services to the
Contract.
This is the eleventh Quarterly EM&A report
for the Contract which summarizes the monitoring results and audit findings of
the EM&A programme during the reporting period from 1 March 2015 to 31 May 2015.
Environmental
Monitoring and Audit Progress
The EM&A programme
were undertaken in accordance with the Updated EM&A Manual for HKLR
(Version 1.0). A summary of the
monitoring activities during this reporting period is presented as below:
Monitoring Activity |
Monitoring Date |
|||
March 2015 |
April
2015 |
May 2015 |
||
Air
Quality |
1-hr TSP |
2, 6, 12,
18, 24 and 30 |
2, 8, 14, 20, 24 and 29 |
5, 11, 15, 21 and 27 |
24-hr TSP |
5, 11,
17, 23 and 27 |
1, 8, 13, 17, 23 and 28 |
AMS5: 4, 8, 14, 20 and 26 AMS6: 4, 12, 15, 20 and 26 |
|
Noise |
2, 12,
18, 24 and 30 |
8, 14, 20 and 29 |
5, 11, 21 and 27 |
|
Water
Quality |
2, 4, 6,
9, 11, 13, 16, 18, 20, 23, 25, 27 and 30 |
1, 3, 6, 8, 10, 13, 15, 17, 20, 22, 24, 27
and 29 |
1, 4, 6, 8, 11, 13, 15, 18, 20, 22, 25, 27
and 29 |
|
Chinese
White Dolphin |
4, 11, 17
and 26 |
8, 10, 17 and 22 |
4, 8, 14 and 18 |
|
Mudflat
Monitoring (Ecology) |
7, 8, 10,
20, 21 and 22 |
- |
- |
|
Mudflat
Monitoring (Sedimentation rate) |
20 |
- |
- |
|
Site Inspection |
4, 11, 18
and 27 |
1, 8, 15, 22 and 30 |
6, 13, 20 and 29 |
Due to change of tide
pattern and weather condition, mudflat monitoring (ecology) was rescheduled
from 24 March to 20 March 2015.
Due to malfunction of
HVS at AMS6 on 8 May 2015, the 24-hr TSP monitoring result obtained on 8 May
2015 was considered invalid. The 24-hr TSP monitoring was rescheduled from 8
May to 12 May 2015.
Due to power
interruption of HVS at station AMS6 on 14 May 2015, the 24-hr TSP monitoring at
station AMS6 was rescheduled from 14 May 2015 to 15 May 2015.
Due to change of
weather condition on 21 May 2015, the dolphin monitoring was rescheduled from
21 May 2015 to 18 May 2015.
Due to boat
availability issue, the dolphins monitoring was rescheduled from 9 March 2015
to 11 March 2015, from 23 March 2015 to 26 March 2015, from 14 April 2015 to 10
April 2015 and from 11 May 2015 to 8 May 2015.
Breaches
of Action and Limit Levels
A summary of environmental exceedances for this
reporting period is as follows:
Environmental Monitoring |
Parameters |
Action Level (AL) |
Limit Level (LL) |
Air
Quality |
1-hr TSP |
1 |
1 |
24-hr TSP |
0 |
0 |
|
Noise |
Leq
(30 min) |
0 |
0 |
Water
Quality |
Suspended
solids level (SS) |
4 |
0 |
Turbidity
level |
0 |
0 |
|
Dissolved
oxygen level (DO) |
0 |
0 |
|
Dolphin
Monitoring |
Quarterly
Analysis (Mar to May 2015) |
0 |
1 |
The Environmental Team investigated all
exceedances and found that they were not project related.
All investigation reports for exceedances of the
Contract have been submitted to ENPO/IEC for comments and/or follow up to
identify whether the exceedances occurred related to other HZMB contracts.
Implementation of Mitigation Measures
Site inspections were carried out on a weekly
basis to monitor the implementation of proper environmental pollution control
and mitigation measures for the Project.
Potential environmental impacts due to the construction activities were
monitored and reviewed.
Complaint Log
There
were two environmental complaints received in relation to the environmental
impact during the reporting period.
A summary of environmental complaints for this
reporting period is as follows:
Environmental Complaint No. |
Date of Complaint Received |
Description of Environmental
Complaints |
COM-2015-066 |
8 April
2015 |
Air
Quality |
COM-2015-068 |
10 April
2015 |
Noise |
Notifications of Summons and Prosecutions
There were no notifications of summons or
prosecutions received during this reporting period.
Reporting Changes
This report has been developed in compliance
with the reporting requirements for the quarterly summary EM&A reports as
required by the Updated EM&A Manual for HKLR (Version 1.0).
The proposal for the change of Action Level and
Limit Level for suspended solid and turbidity was approved by EPD on 25 March
2013.
The revised Event and Action Plan for dolphin monitoring was approved by EPD on 6 May 2013.
The original monitoring station at IS(Mf)9
(Coordinate- East:813273, North 818850) was observed inside the perimeter silt
curtain of Contract HY/2010/02 on 1 July 2013, as such the original impact
water quality monitoring location at IS(Mf)9 was temporarily shifted outside
the silt curtain. As advised by the
Contractor of HY/2010/02 in August 2013, the perimeter silt curtain was shifted
to facilitate safe anchorage zone of construction barges/vessels until end of
2013 subject to construction progress.
Therefore, water quality monitoring station IS(Mf)9 was shifted to
813226E and 818708N since 1 July 2013.
According to the water quality monitoring team¡¦s observation on 24 March
2014, the original monitoring location of IS(Mf)9 was no longer enclosed by the
perimeter silt curtain of Contract HY/2010/02. Thus, the impact water quality
monitoring works at the original monitoring location of IS(Mf)9 has been
resumed since 24 March 2014.
Table 1.1 Construction
Activities during Reporting Period
Site Area |
Description of Activities |
Portion X |
Dismantling/trimming of temporary 40mm
stone platform for construction of seawall |
Portion X |
Filling works behind stone platform |
Portion X |
Temporary stone platform construction |
Portion X |
Sheet piling |
Portion X |
Excavation and lateral support works for Scenic Hill
Tunnel (Cut & Cover Tunnel) |
Portion X |
Sheet Piling Work for Scenic Hill Tunnel
(Cut & Cover Tunnel) |
Portion X |
Socket H-Pile for for Scenic Hill Tunnel
(Cut & Cover Tunnel) |
Portion X |
Construction of Seawall |
Portion X |
Loading and unloading of filling
materials |
Portion X |
Laying blinding layer for tunnel box
structure at Scenic Hill Tunnel (Cut & Cover Tunnel) |
Portion X |
Excavation works for HKBCF to Airport
Tunnel |
West Portal |
Pipe roofing installation and excavation
for Scenic Hill Tunnel |
West Portal |
Ventilation
Building Foundation Works |
West Portal |
Excavation for Scenic Hill Tunnel |
Kwo Lo Wan / Airport Road |
Works for diversion of Airport Road and
Kwo Lo Wan Road |
Airport Road |
Excavation works for HKBCF to
Airport Tunnel West (Cut & Cover Tunnel) |
Airport Road |
Mini-piling work for HKBCF to Airport Tunnel West (Cut &
Cover Tunnel) |
Airport Road |
Pipe Piling Cofferdam Works for HKBCF to Airport Tunnel West (Cut &
Cover Tunnel) |
Airport Road |
Excavation and
Lateral Support Works for HKBCF to Airport Tunnel West (Cut & Cover
Tunnel) |
Airport Express Line |
Pre-grouting and pipe piling works for
Airport Express Line access shafts |
Airport Express Line |
Canopy pipe drilling underneath Airport
Express Line |
Kwo Lo Wan/ Airport Road/ Airport Express Line |
Utilities detection |
Airport Road/ Airport Express Line/ East Coast Road |
Establishment of Site Access |
Kwo Lo Wan Road |
Excavation and lateral support works at
shaft 3 extension north shaft & south shaft |
Portion Y |
Utility culvert excavation |
Portion Y |
Highway
Operation and Maintenance Area Building
Foundation Works |
Table 2.1 Summary
of Impact EM&A Requirements
Environmental
Monitoring |
Description |
Monitoring
Station |
Frequencies |
Remarks
|
Air Quality |
1-hr TSP |
AMS 5 & AMS 6 |
At least 3 times every 6 days |
While the highest dust impact was expected. |
24-hr TSP |
At least once every 6 days |
-- |
||
Noise |
Leq (30mins), |
NMS5 |
At least once per week |
Daytime on normal weekdays
(0700-1900 hrs). |
Water Quality |
¡P Depth ¡P Temperature
¡P Salinity ¡P Dissolved
Oxygen (DO) ¡P Suspended
Solids (SS) ¡P DO
Saturation ¡P Turbidity
¡P pH |
¡P Impact
Stations: ¡P Control/Far
Field Stations: ¡P Sensitive
Receiver Stations: |
Three times per week
during mid-ebb and mid-flood tides (within ¡Ó 1.75 hour of the predicted time) |
3 (1 m below water surface,
mid-depth and 1 m above sea bed, except where the water depth is less than 6
m, in which case the mid-depth station may be omitted. Should the water depth be less than 3
m, only the mid-depth station will be monitored). |
Dolphin |
Line-transect
Methods |
Northeast Lantau survey
area and Northwest Lantau survey area |
Twice per month |
-- |
Mudflat |
Horseshoe crabs, seagrass beds, intertidal soft shore communities,
sedimentation rates and water quality |
San Tau and Tung Chung Bay |
Once every 3 months |
-- |
Table 2.2 Action
and Limit Levels for 1-hour TSP, 24-hour TSP and Noise
Environmental Monitoring |
Parameters |
Monitoring Station |
Action Level |
Limit Level |
Air
Quality |
1-hr TSP |
AMS 5 |
352 µg/m3 |
500 µg/m3 |
AMS 6 |
360 µg/m3 |
|||
24-hr TSP |
AMS 5 |
164 µg/m3 |
260 µg/m3 |
|
AMS 6 |
173 µg/m3 |
|||
Noise |
Leq
(30 min) |
NMS 5 |
When one documented complaint is received |
75 dB(A) |
Table 2.3 Action
and Limit Levels for Water Quality
Parameter
(unit) |
Water
Depth |
Action
Level |
Limit
Level |
Dissolved Oxygen (mg/L) |
Surface and Middle |
5.0 |
4.2 except 5 for Fish
Culture Zone |
Bottom |
4.7 |
3.6 |
|
Turbidity (NTU) |
Depth average |
27.5 or 120% of upstream
control station¡¦s turbidity at the same tide of the same day; The action level has been
amended to ¡§27.5 and 120% of upstream control station¡¦s turbidity at the same
tide of the same day¡¨ since 25 March 2013. |
47.0 or 130% of turbidity
at the upstream control station at the same tide of same day; The limit level has been
amended to ¡§47.0 and 130% of turbidity at the upstream control station at the
same tide of same day¡¨ since 25 March 2013. |
Suspended Solid (SS)
(mg/L) |
Depth average |
23.5 or 120% of upstream
control station¡¦s SS at the same tide of the same day; The action level has been
amended to ¡§23.5 and 120% of upstream control station¡¦s SS at the same tide of
the same day¡¨ since 25 March 2013. |
34.4 or 130% of SS at the
upstream control station at the same tide of same day and 10mg/L for Water
Services Department Seawater Intakes; The limit level has been
amended to ¡§34.4 and 130% of SS at the upstream control station at the same
tide of same day and 10mg/L for Water Services Department Seawater Intakes¡¨
since 25 March 2013 |
(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 limit occurs when monitoring result is
lower that the limit.
(3) For SS
& turbidity non-compliance of the water quality limits occur when
monitoring result is higher than the limits.
(4) The change
to the Action and limit Levels for Water Quality Monitoring for the EM&A
works was approved by EPD on 25 March 2013. Therefore, the amended Action and
Limit Levels are applied for the water monitoring results obtained on and after
25 March 2013.
Table 2.4 Action
and Limit Level for Dolphin Impact Monitoring
|
North
Lantau Social Cluster |
|
NEL |
NWL |
|
Action Level |
STG < 70% of baseline
& |
STG < 70% of baseline
& |
Limit Level |
STG < 40% of baseline
& |
Remarks:
(1)
STG means quarterly average encounter rate of
number of dolphin sightings.
(2)
ANI means quarterly average encounter rate of
total number of dolphins.
(3)
For North Lantau Social Cluster, AL will be
triggered if either NEL or NWL fall below the criteria; LL will be triggered if
both NEL and NWL fall below the criteria.
Table 2.5 Derived
Value of Action Level (AL) and Limit Level (LL)
|
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) |
Remarks:
(1)
STG means quarterly average encounter rate of
number of dolphin sightings.
(2)
ANI means quarterly average encounter rate of
total number of dolphins.
(3)
For North Lantau Social Cluster, AL will be
triggered if either NEL or NWL fall below the criteria; LL will be triggered if
both NEL and NWL fall below the criteria.
Table 3.1 Summary
of 1-hour TSP Monitoring Results During the Reporting Period
Reporting Period |
Monitoring Station |
Average (mg/m3) |
Range (mg/m3) |
Action Level (mg/m3) |
Limit Level (mg/m3) |
March 2015 |
AMS5 |
151 |
69 - 508 |
352 |
500 |
AMS6 |
115 |
65 - 173 |
360 |
||
April 2015 |
AMS5 |
99 |
67 - 176 |
352 |
|
AMS6 |
93 |
65 - 150 |
360 |
||
May 2015 |
AMS5 |
69 |
59 ¡V 83 |
352 |
|
AMS6 |
75 |
63 - 107 |
360 |
Table 3.2 Summary
of 24-hour TSP Monitoring Results During the Reporting Period
Reporting Period |
Monitoring Station |
Average (mg/m3) |
Range (mg/m3) |
Action Level (mg/m3) |
Limit Level (mg/m3) |
March 2015 |
AMS5 |
60 |
32 - 103 |
164 |
260 |
AMS6 |
75 |
42 - 112 |
173 |
||
April 2015 |
AMS5 |
48 |
31 - 101 |
164 |
|
AMS6 |
67 |
36 - 118 |
173 |
||
May 2015 |
AMS5 |
21 |
14 - 27 |
164 |
|
AMS6 |
43 |
22 - 64 |
173 |
Table 3.3 Summary
of Construction Noise Monitoring Results During the Reporting Period
Reporting period |
Monitoring
Station |
Average Leq
(30 mins), dB(A)* |
Range of Leq
(30 mins), dB(A)* |
Action Level |
Limit Level Leq
(30 mins), dB(A) |
March 2015 |
NMS5 |
59 |
57 - 60 |
When one documented complaint is received |
75 |
April 2015 |
61 |
58 - 63 |
|||
May 2015 |
63 |
56 ¡V 74 |
SPSE = ((S / E) x 100) /
SA%
DPSE = ((D / E) x 100) /
SA%
where S =
total number of on-effort sightings
D = total number of
dolphins from on-effort sightings
E = total number of units
of survey effort
SA% = percentage of sea
area
Table
3.4 Dolphin
Encounter Rates (Sightings Per 100 km of Survey Effort) During Reporting Period
(March to May 2015)
Survey Area |
Dolphin Monitoring |
Encounter rate (STG) |
Encounter rate (ANI) |
Primary Lines Only |
Primary Lines Only |
||
Northeast Lantau |
Set 1 (4 & |
0.00 |
0.00 |
Set 2 (17 & |
0.00 |
0.00 |
|
Set 3 (8 & |
0.00 |
0.00 |
|
Set 4 (17 & |
0.00 |
0.00 |
|
Set 5 (4 & 8 May
2015) |
0.00 |
0.00 |
|
Set 6 (14 & 18 May
2015) |
0.00 |
0.00 |
|
Northwest Lantau |
Set 1 (4 & |
1.42 |
9.93 |
Set 2 (17 & |
0.00 |
0.00 |
|
Set 3 (8 & |
1.40 |
4.20 |
|
Set 4 (17 & |
0.00 |
0.00 |
|
Set 5 (4 & 8 May
2015) |
0.00 |
0.00 |
|
Set 6 (14 & 18 May
2015) |
0.00 |
0.00 |
Survey Area |
Encounter rate (STG) |
Encounter rate (ANI) |
||
Reporting Period |
Baseline Monitoring Period |
Reporting Period |
Baseline Monitoring Period |
|
Northeast Lantau |
0.00 |
6.00 ¡Ó 5.05 |
0.00 |
22.19 ¡Ó 26.81 |
Northwest Lantau |
0.47 ¡Ó 0.73 |
9.85 ¡Ó 5.85 |
2.36 ¡Ó 4.07 |
44.66 ¡Ó 29.85 |
Notes:
1) The encounter rates deduced from the baseline monitoring period have been recalculated
based only on the survey effort and on-effort sighting data made along the
primary transect lines under favourable conditions.
2) ¡Ó denotes the standard deviation of the average
encounter rates.
Table
3.6 Comparison of Average
Dolphin Encounter Rates in Northeast Lantau Survey Area from All Quarters of
Impact Monitoring Period and Baseline Monitoring Period (Sep ¡V Nov 2011)
Monitoring Period |
Encounter rate (STG) |
Encounter rate (ANI) |
September-November 2011
(Baseline) |
6.00 ¡Ó 5.05 |
22.19 ¡Ó 26.81 |
December 2012-February
2013 (Impact) |
3.14 ¡Ó 3.21 |
6.33 ¡Ó 8.64 |
March-May
2013 (Impact) |
0.42 ¡Ó 1.03 |
0.42 ¡Ó 1.03 |
June-August
2013 (Impact) |
0.88 ¡Ó 1.36 |
3.91 ¡Ó 8.36 |
September-November
2013 (Impact) |
1.01 ¡Ó 1.59 |
3.77 ¡Ó 6.49 |
December 2013-February
2014 (Impact) |
0.45 ¡Ó 1.10 |
1.34 ¡Ó 3.29 |
March-May
2014 (Impact) |
0.00 |
0.00 |
June-August
2014 (Impact) |
0.42 ¡Ó 1.04 |
1.69 ¡Ó 4.15 |
September-November
2014 (Impact) |
0.00 |
0.00 |
December
2014-February 2015 (Impact) |
0.00 |
0.00 |
March-May
2015 (Impact) |
0.00 |
0.00 |
Notes:
1) The encounter rates deduced from the baseline monitoring period have been
recalculated based only on survey effort and on-effort sighting data made along
the primary transect lines under favourable conditions.
2) ¡Ó denotes the standard deviation of the average encounter rates.
Table 3.7 Comparison of Average Dolphin Encounter Rates in Northwest Lantau
Survey Area from All Quarters of Impact Monitoring Period and Baseline
Monitoring Period (Sep ¡V Nov 2011)
Monitoring Period |
Encounter
rate (STG)
(no. of on-effort
dolphin sightings per 100 km of survey effort) |
Encounter
rate (ANI)
(no. of dolphins from all on-effort sightings per 100 km of survey
effort) |
September-November 2011
(Baseline) |
9.85 ¡Ó 5.85 |
44.66 ¡Ó 29.85 |
December 2012-February
2013 (Impact) |
8.36 ¡Ó 5.03 |
35.90 ¡Ó 23.10 |
March-May
2013 (Impact) |
7.75 ¡Ó 3.96 |
24.23 ¡Ó 18.05 |
June-August
2013 (Impact) |
6.56 ¡Ó 3.68 |
27.00 ¡Ó 18.71 |
September-November
2013 (Impact) |
8.04 ¡Ó 1.10 |
32.48 ¡Ó 26.51 |
December 2013-February
2014 (Impact) |
8.21 ¡Ó 2.21 |
32.58 ¡Ó 11.21 |
March-May
2014 (Impact) |
6.51 ¡Ó 3.34 |
19.14 ¡Ó 7.19 |
June-August 2014 (Impact) |
4.74 ¡Ó 3.84 |
17.52 ¡Ó 15.12 |
September-November 2014 (Impact) |
5.10 ¡Ó 4.40 |
20.52 ¡Ó 15.10 |
December 2014-February
2015 (Impact) |
2.91 ¡Ó 2.69 |
11.27 ¡Ó 15.19 |
March-May
2015 (Impact) |
0.47 ¡Ó 0.73 |
2.36 ¡Ó 4.07 |
Notes:
1) The encounter rates deduced from the
baseline monitoring period have been recalculated based only on survey effort
and on-effort sighting data made along the primary transect lines under
favourable conditions.
2) ¡Ó denotes the standard deviation of the average encounter rates.
Table 3.8 Comparison
of Average Dolphin Group Sizes between Reporting Period (March to May 2015) and
Baseline Monitoring Period (Sep¡V Nov 2011)
Survey Area |
Average Dolphin Group Size |
|
Reporting Period |
Baseline Monitoring Period |
|
Overall |