1. This is
the 26th Environmental
Monitoring and Audit (EM&A) Report prepared by Cinotech
Consultants Limited for the “Agreement No. CE
59/2015 (EP) Environmental Team for Tseung Kwan O – Lam
Tin Tunnel – Design and Construction” (hereinafter called “the Project”). This report documents
the findings of EM&A Works conducted in December 2018.
2. During the reporting month, the following works contracts were
undertaken:
· Contract No. NE/2015/01 – Tseung Kwan O – Lam
Tin Tunnel – Main Tunnel and Associated Works;
· Contract No. NE/2015/02 – Tseung Kwan
O – Lam Tin Tunnel – Road P2 and Associated Works;
· Contract No. NE/2015/03 – Tseung
Kwan O – Lam Tin Tunnel – Northern Footbridge;
· Contract No. NE/2017/01 – Tseung
Kwan O – Lam Tin Tunnel –Tseung Kwan O Interchange
and Associated Works
· Contract No. NE/2017/02 – Tseung
Kwan O – Lam Tin Tunnel – Road P2/D4 and Associated Works.
· Contract
No. NE/2017/06 – Tseung Kwan O – Lam Tin Tunnel –
Traffic Control and Surveillance System(TCSS) and Associated Works
· Contract
No. NE/2017/07 – Cross Bay Link, Tseun Kwan O – Main
Bridge and Associated Works.
3.
Environmental
monitoring for the Project was performed in accordance with the EM&A Manual and the monitoring
results were checked
and reviewed. Site Inspections/Audits were conducted once per week. The
implementation of the environmental mitigation measures, Event Action Plans and
environmental complaint handling procedures were also checked.
4.
Summary
of the non-compliance (exceedance) in the reporting month for the Project is tabulated in Table I.
Table I Non-compliance (exceedance) Record for the
Project in the Reporting Month
Environmental
Monitoring |
No. of Non-compliance (Exceedance) |
No. of Non-compliance (Exceedance) due
to Construction Activities of this Project |
Action
Taken |
||
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
||
Air Quality |
0 |
0 |
0 |
0 |
N/A |
Noise |
9 |
13 |
9 |
1 |
Refer to
Appendix K & O |
Groundwater
Quality |
3 |
4 |
0 |
0 |
Refer to
Appendix K |
Marine
Water Quality |
23 |
170 |
0 |
0 |
Refer to
Appendix K |
Groundwater
Level Monitoring (Piezometer Monitoring) |
0 |
N/A1 |
0 |
N/A1 |
N/A |
Ecological
|
N/A |
N/A |
N/A |
N/A |
N/A |
Cultural
Heritage |
0 |
0 |
0 |
0 |
N/A |
Landfill
Gas |
0 |
0 |
0 |
0 |
N/A |
Note:(1) No Limit Level for Groundwater Level
Monitoring (Piezometer Monitoring).
Air Quality Monitoring
5. All 1-hour
TSP monitoring was conducted as scheduled in the reporting month. No
Action/Limit Level exceedance was recorded.
6. All 24-hour
TSP monitoring was conducted as scheduled in the reporting month. No
Action/Limit Level exceedance was recorded.
Construction
Noise Monitoring
7. All noise
monitoring was conducted as scheduled in the reporting month. Nine (9) Action Level
exceedances were recorded due to the documented complaints received in this
reporting month. Thirteen (13) Limit Level
exceedances were recorded in the reporting month.
Water Quality Monitoring
8. Groundwater quality monitoring was conducted as scheduled in the reporting
month. Three (3) action level and Four (4) Limit Level exceedances were recorded in the reporting month.
9. All
marine water monitoring was conducted as scheduled in the reporting month. Twenty-three (23) Action Level and one hundred and seventy (170) Limit
Level exceedance in marine water quality monitoring.
10. Construction phase daily piezometer
monitoring by the Contractor commenced in June 2018. It has switched to monthly
basis since 3 October 2018 as the construction activity was 120m away from the
piezometer gate. The daily piezometer monitoring has resumed on 19 November
2018, as the construction activity was within 50m. No Action Level exceedance
was recorded in the reporting month.
Ecological Monitoring
11. Post-translation coral monitoring survey
shall be conducted once every 3 months for a period of 12 months after
completion of coral translocation. The post-translocation coral monitoring
surveys were completed in November 2017.
Monitoring on Cultural Heritage
12. Monitoring of impacts on Cultural
Heritage at Cha Kwo
Ling Tin Hau Temple commenced
in April 2017. No Alert Alarm and Action (AAA) Level exceedance was recorded in
the reporting month.
Landscape and Visual Monitoring and
Audit
13. The implementation of landscape and visual
mitigation measures was checked during the environmental site inspections.
Recommended follow-up actions have been discharged by the Contractor. Details of the audit findings and
implementation status are presented in Section 10.
Landfill Gas Monitoring
14. Monitoring
of landfill gases commenced in December 2016 and were carried out by the Contractor at excavation location, Portion III. No
Limit Level exceedance was recorded.
Environmental Site Inspection
15. Joint weekly site inspections were conducted
by representatives of the Contractor, Engineer and Environmental Team. The
representative of the IEC joined the site inspection for NE/2015/01, NE/2015/02, NE/2015/03,
NE/2017/01 and NE/2017/02 on 5, 12, 19, 4 and
19 December 2018 respectively. Details of the audit findings and
implementation status are presented in Section
10.
Waste Management
16.
Wastes generated from this Project include inert construction and
demolition (C&D) materials, non-inert C&D materials and marine
sediments. Details of waste management
data is presented in Section 11 and Appendix P.
17. Summary of
key information in the reporting month is tabulated in Table II
Table II
Summary Table for Key Information in the Reporting Month
Event |
Event
Details |
Action
Taken |
Status |
|
Number |
Nature |
|||
Complaint received by Project Team / Complaint referred by EPD (December 2018) |
9 |
Noise
nuisance/ Construction
dust |
Under
investigation |
On-going
|
Complaint received by Project Team / Complaint referred by EPD (November 2018) |
12 |
Noise
nuisance/ Construction
dust |
Details
refer to App O |
On-going |
Complaint received by Project Team / Complaint referred by EPD (October 2018) |
13 |
Noise
nuisance |
Details
refer to App O |
Closed |
Notifications of any summons & prosecutions received |
0 |
--- |
N/A |
N/A |
18. Summary of
key construction work in the reporting month is tabulated in Table III.
Table III
Summary Table for Key Construction Work in the Reporting Month
Contract No. |
Project
Title |
Site
Activities (December
2018) |
|
NE/2015/01 |
Tseung Kwan O – Lam Tin Tunnel – Main Tunnel and
Associated Works |
Lam Tin Interchange |
1)
EHC2
U-Trough 2)
Site
Formation – Area 1G1, Area 1G2, Area 2 , Area 3, Area 4 and Area 5 |
Main Tunnel |
3)
Main
tunnel Excavation |
||
TKO Interchange |
4)
Haul
Road Construction, Site Formation and Slope Works 5)
Steel
Platform for Bridge Construction 6)
Cavern Excavation |
||
NE/2015/02 |
Tseung Kwan O – Lam Tin Tunnel – Road P2 and Associated
Works |
1) Backfilling works 2) Construction of U-trough structure 3) Pre-bore and sheetpile works for 2100 pipe at Portion IV and Portion VII 4) Pre-bore works for decked U-trough 5) Sheet pile works for decked U-trough 6) Drainage works at U-trough CH411-CH500 7) ELS works and construction of P2A RW 8) ELS works for 2100 pipe 9) Construction of desilting opening near retaining wall at P2A Bay 8 at Portion VIII 10) Installation of 2100 storm water pipe at Portion IV / VII 11) King post and de-watering system for proposed U-trough CH318.00 – CH363.50 at Portion V/VI 12) Construction of permanent fence at Ocean Shores 13) CCTV works at covered channel at Portion IV 14) Fabrication of ELS members for proposed ELS system at CH318.00 – CH363.50 15) Removal of damage temporary steel cofferdam 16) Surcharging at surcharge Area 1a 17) Reclamation works at Portion IX 18) Reinstatement of existing seawall at Portion VII 19) Pre-drilling
at P2 CH283 – CH305 |
|
NE/2015/03 |
Tseung Kwan O
– Lam Tin Tunnel – Northern Footbridge |
1) Construction of Main deck 2) Erection of scaffolding for Staircase 1 3) Installation of Lift Car 4) Plate Load Test for the temporary filled area |
|
NE/2017/01 |
Tseung Kwan O – Lam Tin
Tunnel – Tseung Kwan O Interchange and Associated
Works |
1) Repairing Works for Temporary Working Platform 2) Pre-drilling 3) Bored piling 4) Dismantling Works for Temporary Working Platform 5) Construction of Temporary Working Platform |
|
NE/2017/02 |
Tseung Kwan O – Lam Tin Tunnel – Road P2/D4 and
Associated Works |
1) Trial pit 2) Underground utilities detection 3) Temporary traffic arrangement setup 4) Piling Works 5) Construction of Temporary carriageway 6) Pre-bored Socket H-Pile 7) Modification of traffic island 8) Predrilling 9) Construction of Temporary cycle track 10) Construction of drainage and watermain |
19. The future
key environmental issues in the coming month include:
Table IV
Summary Table for Site
Activities in the next Reporting Period
Contract No. and Project Title |
Site
Activities (January 2019) |
Key environmental issues * |
|
NE/2015/01 - Tseung Kwan O – Lam Tin Tunnel – Main Tunnel and
Associated Works |
Lam Tin
Interchange |
1)
EHC2
U-Trough 2)
Site
Formation – Area 1G1, Area 1G2, Area 2, Area 3, Area 4 & Area 5 |
(A) / (B) / (C) / (D) /
(E) (G) |
Main
Tunnel |
3)
Main
Tunnel Excavation 4)
Main
Tunnel Lining Works |
(B) |
|
TKO
Interchange |
5)
Haul
Road Construction and Site Formation & Slope Works 6)
Cavern
Excavation 7)
Steel
Platform for Bridge Construction |
(A) / (C) / (D) / (E) / (F) / (I) |
|
NE/2015/02 - Tseung Kwan O – Lam Tin Tunnel – Road P2 and
Associated Works |
1) Backfilling works 2) Construction of U-trough structure 3) Pre-bore and sheetpile works for 2100 pipe at Portion IV and Portion VII 4) Pre-bore works for decked U-trough 5) Sheet pile works for decked U-trough 6) Drainage works at U-trough CH411-CH500 7) ELS works and construction of P2A RW 8) ELS works for 2100 pipe 9) Construction of desilting opening near retaining wall at P2A Bay 8 at Portion VIII 10) Installation of 2100 storm water pipe at Portion IV / VII 11) King post and de-watering system for proposed U-trough CH318.00 – CH363.50 at Portion V/VI 12) Construction of permanent fence at Ocean Shores 13) CCTV works at covered channel at Portion IV 14) Fabrication of ELS members for proposed ELS system at CH318.00 – CH363.50 15) Removal of damage temporary steel cofferdam 16) Surcharging at surcharge Area 1a 17) Reclamation works at Portion IX 18) Reinstatement of existing seawall at Portion VII 19) Pre-drilling
at P2 CH283 – CH305 |
(A) / (B) / (C) / (D) / (E) / (G) / (I) |
|
NE/2015/03
- Tseung Kwan O – Lam Tin Tunnel – Northern
Footbridge |
1) Construction of Main deck 2) Remove steel mould & scaffolding of
bridge deck |
(A) / (B) / (C) / (D) / (E) |
|
NE/2017/01 – Tseung Kwan O Interchange and
Associated Works |
1) Dismantling Works for Temporary Working Platform 2) Pre-drilling 3) Bored piling 4) Construction of Temporary Working Platform 5) Installation of Precast Pile Cap Shell Construction of Pile Cap Shell |
(A) / (B) / (E) / (F) / (G) |
|
NE/2017/02 –Tseung Kwan O - Lam Tin Tunnel -
Road P2/D4 and Associated Works |
1) Trial pit 2) Underground utilities detection 3) Temporary traffic arrangement setup 4) Piling Works 5) Construction of Temporary carriageway 6) Pre-bored Socket H-Pile 7) Modification of traffic island 8) Predrilling 9) Construction of Temporary cycle track 10) Construction of drainage and watermain |
(A) / (B) / (E) / (F) / (G) |
Note:
(A)
Watering
for dust generation from haul road, stockpiles of dusty materials, exposed site
area, excavation works and rock breaking activities;
(B)
Noisy
construction activity such as rock-breaking activities and piling works;
(C)
Runoff
from exposed slope or site area;
(D)
Wastewater
and runoff discharge from site;
(E)
Accumulation
of silt, mud and sand along U-channels and sedimentation tanks;
(F)
Set
up and implementation of temporary drainage system for the surface runoff;
(G)
Storage
of chemicals/fuel and chemical waste/waste oil on site;
(H)
Accumulation
and storage of general and construction waste on site; and
(I)
Marine water quality impact and
indirect impact to coral communities due to marine construction for TKO-LTT
reclamation.