EXECUTIVE SUMMARY

Introduction

1. This is the 17^th Quarterly 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 summary report presents the EM&A works performed in the period from November 2020 to January 2021.

2. During the reporting quarter, the following works contracts were undertaken within the site:

· 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/2017/07 – Cross Bay Link, Tseung Kwan O – Main Bridge and Associated Works

Environmental Monitoring 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 in the reporting quarter for the Project is tabulated in Table I. Details of the environmental monitoring results is presented in Section 3.

Table I Non-compliance (Exceedance) Record for the Project in the Reporting Quarter

Parameter	No. of Exceedance		No. of Exceedance due to Construction Activities of this Project		Action Taken
Parameter	Action Level	Limit Level	Action Level	Limit Level	Action Taken
November 2020
Air Quality	0	0	0	0	N/A
Noise	12	0	12	0	Refer to Appendix K & L
Marine Water Quality	31	111	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
December 2020
Air Quality	0	0	0	0	N/A
Noise	13	0	10	0	Refer to Appendix K & L
Marine Water Quality	41	123	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
January 2021
Air Quality	0	0	0	0	N/A
Noise	9	0	3	0	Refer to Appendix K & L
Marine Water Quality	21	85	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).

Key Information in the Reporting Quarter

5. Summary of key information in the reporting quarter is tabulated in Table II.

Table II Summary Table for Key Information in the Reporting Quarter

Event	Event Details		Action Taken	Status	Remark
Event	Number	Nature	Action Taken	Status	Remark
Complaint received by Project Team / Complaint referred by EPD (Nov 2020)	14	Air / Noise	Investigation Completed	Draft CIR submitted / Closed	Details refer to App L
Complaint received by Project Team / Complaint referred by EPD (Dec 2020)	13	Air / Noise / Operating Hours	Investigation Completed	Draft CIR submitted / Closed
Complaint received by Project Team / Complaint referred by EPD (Jan 2021)	13	Air / Noise	Investigation Completed / On-going	Draft CIR submitted / Closed / On-going
Reporting Changes	0	---	N/A	N/A	---
Notifications of any summons & prosecutions received (Nov 2020)	0	---	N/A	N/A	---
Notifications of any summons & prosecutions received (Dec 2020)	0	---	N/A	N/A	---
Notifications of any summons & prosecutions received (Jan 2021)	0	---	N/A	N/A	---

Remarks:

6. Environmental monitoring works for the Project are considered effective and is generating data to categorically identify the environmental impacts from the works and influencing factors in the vicinity of monitoring stations.

1. INTRODUCTION

Background

1.1 In 2002, Civil Engineering and Development Department (CEDD) commissioned an integrated planning and engineering study under Agreement No. CE 87/2001 (CE) “Further Development of Tseung Kwan O – Feasibility Study” (the “TKO Study”) to formulate a comprehensive plan for further development of TKO New Town. It recommended to further develop TKO to house a total population of 450,000 besides the district’s continuous commercial and industrial developments.

1.2 At present, the Tseung Kwan O Tunnel is the main connection between Tseung Kwan O (TKO) and other areas in the territory. To cope with the anticipated transport need, the TKO Study recommended the provision of Tseung Kwan O – Lam Tin Tunnel (TKO-LTT) (hereinafter referred to as “the Project”) and Cross Bay Link (CBL) to meet the long-term traffic demand between TKO and the external areas. The site layout plan for the Project is shown in Figure 1.

1.3 The Environmental Impact Assessment (EIA) Report for the TKO-LTT project was approved under the Environmental Impact Assessment Ordinance (EIAO) in July 2013. The corresponding Environmental Permit (EP) was issued in November 2013 (EP no.: EP-458/2013). Variations to the EP was applied and the latest EP (EP no.: EP-458/2013/C) was issued by the Director of Environmental Protection (DEP) in January 2017.

Project Organizations

1.4 Different parties with different levels of involvement in the project organization include:

· Project Proponent – Civil Engineering and Development Department (CEDD)

· The Engineer and the Engineer’s Representative (ER) – AECOM

· Environmental Team (ET) – Cinotech Consultants Limited (Cinotech)

· Independent Environmental Checker (IEC) – AnewR Consulting Limited (AnewR)

1.5 The key contacts of the Project are shown in Table 1.1.

Table 1.1 Key Project Contacts

Party	Role	Contact Person	Phone No.	Fax No.
CEDD	Project Proponent	Mr. LO Sai Pak, Sunny	2301 1384	2739 0076
AECOM	Engineer’s Representative	Mr. KY Chan	3922 9000	2759 1698
Cinotech	Environmental Team	Dr. HF Chan	2151 2088	3107 1388
Cinotech	Environmental Team	Mr. KS Lee	2151 2091	3107 1388
AnewR	Independent Environmental Checker	Mr. James Choi	2618 2836	3007 8648

Construction Activities undertaken during the Report Quarter

1.6 The major site activities undertaken in the reporting quarter are shown in Appendix M.

2. ENVIRONMENTAL MONITORING AND AUDIT REQUIREMENTS

Monitoring Parameters and Monitoring Locations

2.1 The EM&A Manual designates locations for environmental monitoring in terms of air quality, noise, groundwater quality, water quality, ecology, cultural heritage and landfill gas due to the Project. The Project area and monitoring locations are depicted in Figures 1 - 6. Appendix A gives details of monitoring requirements. Locations of the environmental sensitive receivers are shown in Figures 3.1, 3.2, 4.1, 5.1, 6.2 and 9.2.

Monitoring Methodology and Calibration Details

2.2 Monitoring works/equipment were conducted/calibrated regularly in accordance with the EM&A Manual. Copies of calibration certificates are attached in the appendices of the Monthly EM&A Reports.

Environmental Quality Performance Limits (Action and Limit Levels)

2.3 The environmental quality performance limits, i.e. Action and Limit Levels were derived from the baseline monitoring results. Should the measured environmental quality parameters exceed the Action/Limit Levels, the respective action plans would be implemented. The Action/Limit Levels for each environmental parameter are given in Appendix B.

2.4 Should the monitoring results of the environmental monitoring parameters at any designated monitoring stations indicate that the Action / Limit Levels are exceeded, the actions in accordance with the Event and Action Plans in Appendix N was carried out.

Implementation Status of Environmental Mitigation Measures

2.5 Relevant mitigation measures as recommended in the project EIA report have been stipulated in the EM&A Manual for implementation by the Contractor. The implementation status of environmental mitigation measures (EMIS) is given in Appendix I.

Site Audit Summary

2.6 During site inspections in the reporting period, no non-compliances was recorded. The observations and recommendations made during the reporting period are summarized in Appendix H.

Status of Waste Management

2.7 The amount of wastes generated by the activities of the Work Contracts within TKO-LTT during the reporting period is shown in Appendix J.

3. MONITORING RESULTS

Weather Conditions

3.1 The weather during monitoring sessions was summarized in Table 3.1.

Table 3.1 Summary of Weather Conditions in the Reporting Period

Reporting Month	General Weather Conditions
November 2020	Sunny, Cloudy and Rainy
December 2020	Sunny, Cloudy and Rainy
January 2021	Sunny, Cloudy and Rainy

3.2 The detail of weather conditions for each individual monitoring session was presented in the monthly EM&A report.

Air Quality

3.3 All 1-hour TSP monitoring was conducted as scheduled in the reporting quarter. No Action/Limit Level exceedance was recorded.

3.4 All 24-hour TSP monitoring was conducted as scheduled in the reporting quarter. No Action / Limit Level exceedance was recorded.

3.5 The graphical presentations of the air quality monitoring results are shown in Appendix C.

Construction Noise

November 2020

3.6 All noise monitoring was conducted as scheduled in the reporting month. Twelve (12) Action Level exceedances were recorded due to the documented complaints received in this reporting month. No Limit Level exceedances for night-time construction noise monitoring were recorded. No Limit Level exceedance for day time was recorded in the reporting month. The summary of documented complaints and the complaint investigation in reporting month are tabulated in Table 3.2.

Table 3.2 Summary of Documented Complaints in November 2020

Complaint No.	Complaint Details	Investigation Findings	Follow-up Action / Mitigation Measure
Lam Tin Side
478, 479, 480, 486, 487	Noise Nuisance near Lam Tin Interchange (Late September to Early November)	Complaint is considered as project-related and no non-compliance in CNMP had been recorded. Details shall be referred to CIR-C38	NIL
489	Dust and Noise Nuisance in Portion IVC	The complaint was found project-related. The contractor had adopted various noise mitigation measures such as rock splitting method and erection of semi-enclosure to further reduce the noise impact to its surrounding. The details shall be referred to CIR-C39.	The Contractor was constructing semi-enclosure to further reducing noise nuisance to the surrounding.
490, 491	Noise nuisance near Lam Tin Interchange (Restricted Hours)	The complaint is considered as project-related. The origin of noise nuisance was believed to be construction works at Tunnel S1 and S2. No non-compliance was found and the details shall be referred to CIR-N121.	The Contractor is reminded to strictly follow the conditions listed within the approved CNMP.
Tseung Kwan O Side
481, 484	Noise Nuisance from Excavation Works	The complaint is considered project-related as no other possible noise origin is know to emit such kind of noise at the surrounding. The complaint is considered project-related as no other possible noise origin is know to emit such kind of reduce noise level. The details shall be referred to CIR-N118	The Contractor had been reminded to applied lubricants and tighten the screws to alleviate the noise nuisance.
483	Low-frequency noise at night (Oct & Nov 2020)	The Contractor had followed the approved CNP. The complaint is considered The low-frequency noise was found coming from the water pumps that works 24/7 and other source may also project-related and shall be referred to CIR-N119	The Contractor is reminded to strictly follow the conditions listed within the approved CNMP.
485	Percussive noise nearby Park Central	The complaint is considered non-project-related as no PME that know to emit percussive noise was operating during the time of complaint. The details shall be referred to CIR-N120.	NIL
488	Dust emission from construction works	The complaint was found project-related. The details shall be referred to CIR-A19.	The Contractor is recommended to spray water more requently to suppress the dust nuisance.
492	Construction Noise Nuisance at Morning	Investigation result reveals that pre-boring and breaking works had been conducted at the time of complaint. The details shall be referred CIR-N122.	The Contractor is reminded to check the conditions of noise mitigation measures before starting the construction works.

December 2020

3.7 All noise monitoring was conducted as scheduled in the reporting month. Ten (10) Action Level exceedances were recorded due to the documented complaints received in this reporting month. No Limit Level exceedances for both day-time and night-time construction noise monitoring were recorded in the reporting month. The summary of documented complaints and the complaint investigations in reporting month are tabulated in Table 3.3. One (1) non-compliance was recorded within this month.

Table 3.3 Summary of Documented Complaints in December 2020

Complaint No.	Complaint Type	Investigation Findings	Follow-up Action / Mitigation Measure
Lam Tin Side
494, 496, 497	Noise Nuisance near Lam Tin Interchange (December 2020)	The complaint is considered as project-related and no non-compliance in CNMP had been recorded. The details shall be referred to CIR-C40	The contractor is reminded to ensure the effectiveness of noise mitigation measures by various measures including repairing damaged noise barrier.
Tseung Kwan O Side
493	Percussive noise nuisance at early morning	No PME(s) working under TKOLTT project at the time of complaint is known to emit percussive noise. The complaint is considered non-project-related and details shall be referred to CIR-N123	NIL
495	Night time mechanical noise nuisance	The complaint is considered as project-related as the noise nuisance originated from water pumps that working 24/7. No noncompliance was found. The details shall be referred to CIR-N124.	NIL
498	Low frequency noise & occasional piling noise nuisance during night time	The complaint is considered as project-related as the noise nuisance was coming from water pumps that working 24/7. No non-compliance was found. Details shall be referring to CIR-N125	NIL
499	Horning noise nuisance on Sunday	The complaint is considered as non-project-related as no barge was working under the TKOLTT project at the time of complaint. The details shall be referred to CIR-O6.	NIL
500, 501, 501B, 502, 503	Noise nuisance at nighttime on a weekday	The Contractor operated PME(s) at evening-/ night- time without an approved valid CNP. The complaint is considered as project related. The details shall be referred to CIR-N126.	The Contractor should submit a noise mitigation proposal to ET&IEC for ensuring similar events will not happen again.
501A	Noise nuisance at nighttime on a weekday	No direct evidence show that the Contractor operated barges at the time of complaint. Therefore the complaint was considered as non-project related. The details shall be referred to CIR-N126.	NIL

January 2021

3.8 All noise monitoring was conducted as scheduled in the reporting month. Three (3) Action Level exceedances were recorded due to the documented complaints received in this reporting month. No exceedances for daytime and night-time construction noise monitoring were. The summary of documented complaints and the complaint investigations in reporting month are tabulated in Table 3.4.

Table 3.4 Summary of Complaints Details in January 2021

Complaint No.	Complaint Type	Investigation Findings	Follow-up Action / Mitigation Measure
Lam Tin Side
504, 515	Suspected noise nuisance from the work site	The complaint was considered non-project-related as there was no PME working on site.	NIL
Tseung Kwan O Side
505, 509, 510	Noise nuisance at nighttime on a weekday	No clear judgement was made. Other than the construction site, other source for low-frequency noise was also identified. Details shall be referred to CIR-N128.	NIL
506	Noise nuisance at nighttime on a weekday	The Contractor operated PME(s) at evening- /night- time without an approved valid CNP.	The Contractor is required to hand in Contingency and Action Plan
507, 508, 512 & 513	Air quality impact due to open stockpile	The Complaint was found project-related. The dust origin was from the stockpile at Zone A of C3.	The Contractor had sprayed water regularly to suppress the dust emission and improvement had been observed over Jan 2021.
511 & 514	Continuous Noise Nuisance during Nighttime (Jan 2021)	The complaint is considered as project-related as barge was operating in during time of complaint. The details shall be referred to CIR-N128	The Contractor is reminded to strictly follow the approved CNP/CNMP.
516	Continuous Noise Nuisance during Nighttime (Jan 2021)	The complaint is considered as non-project-related as no PME was operating on the date of incident. The details shall be referred to CIR-N128.	NIL

3.9 The graphical presentations of the noise monitoring results are shown in Appendix D.

Water Quality

Exceedance Summary

November 2020

3.10 As for marine water quality monitoring, 31 and 111 action level and limit level exceedances in Monitoring Stations (M) were recorded.

December 2020

3.11 As for marine water quality monitoring, 41 and 123 action level and limit level exceedances in Monitoring Stations (M) were recorded.

January 2021

3.12 As for marine water quality monitoring, 21 and 85 action level and limit level exceedances in Monitoring Stations (M) were recorded.

Suspension of Groundwater Quality Monitoring

3.13 The groundwater monitoring was suspended since October 2019.

3.14 The monitoring results had been deemed non-representative of the impact from the project justified by two major factors: (1) influence on the monitoring results from non-project related factors, such as anthropogenic activities and natural phenomenon; and (2) large separation between the monitoring stations and works area. In addition, as no alternative locations for the groundwater quality monitoring were available, the groundwater quality monitoring has been suspended since January 2020 upon the agreement by EPD.

Observation and Exceedance Investigations

3.15 During this reporting quarter, no sand plume was observed during the water quality monitoring and site audits, therefore there is no direct evidence that the recent exceedances were due to reclamation activities of the Project. The Contractor is reminded to deploy silt curtain properly when the barge enters/exits the embayment area. If possible, the Contractor shall also move the barge during high tide to prevent stirring up the sediments on sea bed.

3.16 Exceedances of turbidity and suspended solid were recorded on from various monitoring stations non-specifically among all stations including the control stations. Investigations over November 2020 – January 2021 showed that the range of SS levels recorded in reporting period remained consistent with the records in recent months. Since we officially entered the wet season, all Contractors are reminded to clear the drainage, repair any broken pipes/drainage and ensure there is embankment surrounding the works area to prevent accidental muddy water spillage or surface runoff due to heavy downpours. Details of the exceedance investigation report can be found in Appendix K.

3.17 The graphical presentations of the marine water quality monitoring results are shown in Appendix F. Embayment measurement at W1 was completed in December 2019.

Daily Piezometer Monitoring

3.18 Construction phase daily piezometer monitoring was carried out in the whole period whenever tunnel construction activities were carried out within +/- 50m of the piezometer gate in plan. The monitoring had switched to monthly basis in 19 November 2018 as the construction activities were not within +/- 50m of the piezometer gate in plan. Since no construction had been conducted within +/- 50m of the piezometer gate in the reporting quarter, no piezometer monitoring was conducted in the reporting quarter.

Ecological Monitoring

3.19 Post-translocation 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 survey were completed in February 2017.

Monitoring on Cultural Heritage

3.20 Monitoring of vibration impacts at Cha Kwo Ling Tin Hau Temple commenced on 8 April 2017. No Alert Alarm and Action (AAA) Level exceedance was recorded in the reporting quarter.

Landscape and Visual Monitoring and Audit

3.21 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 Appendix H.

Landfill Gas Monitoring

3.22 Monitoring of landfill gases was commenced in March 2016 and were carried out by the Contractors at excavation location, Portion III in the reporting quarter. No Limit Level exceedance was recorded. The graphical presentations of the landfill gas monitoring results are shown in Appendix G.

Waste Management

3.23 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 Appendix I.

Influencing Factors on the Monitoring Results

3.24 During the reporting period, the major dust and noise source identified at the designated monitoring stations are as follows:

Table 3.5 Major Dust Sources during the Monitoring in the Reporting Period

Station	Major Dust Source
AM1 – Tin Hau Temple	Road Traffic at Cha Kwo Ling Road
AM2 – Sai Tso Wan Recreation Ground	N/A
AM3 – Yau Lai Estate Bik Lai House	Road Traffic near Eastern Cross Harbour Tunnel Toll Plaza
AM4 - Sitting-out Area at Cha Kwo Ling Village	Road Traffic at Cha Kwo Ling Road
AM4(A) - Cha Kwo Ling Public Cargo Working Area Administrative Office	Road Traffic at Cha Kwo Ling Road
AM5(A) - Tseung Kwan O DSD Desilting Compound	Vehicle Movement within the Desilting Compound
AM6(A) - Park Central, L1/F Open Space Area	Road Traffic at Po Yap Road

Table 3.6 Major Noise Sources during the Monitoring in the Reporting Period

Monitoring Stations	Locations	Major Noise Source
CM1	Nga Lai House, Yau Lai Estate Phase 1, Yau Tong	Road Traffic near Eastern Cross Harbour Tunnel Toll Plaza
CM2	Bik Lai House, Yau Lai Estate Phase 1, Yau Tong	Road Traffic near Eastern Cross Harbour Tunnel Toll Plaza
CM3	Block S, Yau Lai Estate Phase 5, Yau Tong	Road Traffic near Eastern Cross Harbour Tunnel Toll Plaza
CM4	Tin Hau Temple, Cha Kwo Ling	Road Traffic at Cha Kwo Ling Road
CM5	CCC Kei Faat Primary School, Yau Tong	Road Traffic at Yau Tong Road
CM6(A)	Site Boundary of Contract No. NE/2015/02 near Tower 1, Ocean Shores	Road Traffic at O King Road near Ocean Shores
CM7(A)	Site Boundary of Contract No. NE/2015/02 near Tower 7, Ocean Shores	Road Traffic at Tong Yin Street
CM8(A)	Park Central, L1/F Open Space Area	Road Traffic at Po Yap Road
CM9(A)	Rooftop of Capri Tower 10	Rooftop (12/F)

4. NON-COMPLIANCE (EXCEEDANCES) OF THE ENVIRONMENTAL QUALITY PERFORMANCE LIMITS (ACTION AND LIMIT LEVELS)

Summary of Exceedances

4.1 Environmental monitoring works were performed in the reporting period and all monitoring results were checked and reviewed. A summary of exceedances is attached in Appendix K.

Air Quality

4.2 No Action/Limit Level exceedance was recorded in the reporting quarter.

Construction Noise

4.3 Twenty-five (25) Action Level exceedances were recorded due to the documented complaints received in the reporting quarter. No Limit Level exceedances was recorded in monitoring stations for night time construction noise in the reporting quarter. No Limit Level exceedance was recorded for day time construction noise in the reporting quarter.

Water Quality

4.4 The groundwater monitoring was suspended since October 2019.

4.5 Ninety-three (93) Action Level exceedances and Three Hundred and Nineteen (319) Limit Level exceedances in Monitoring Stations (M) were recorded for marine water quality monitoring in the reporting quarter.

4.6 Ecological Monitoring

No action/limit level of mortality was exceeded in the monitoring survey conducted in the reporting quarter.

Monitoring on Cultural Heritage

4.7 No Alert Alarm and Action (AAA) Level exceedance was recorded in the reporting quarter.

Landscape and Visual

4.8 No non-compliance of the landscape and visual impact was recorded in the reporting quarter.

Landfill Gas

4.9 No Limit Level exceedance was recorded in the reporting quarter.

Review of the Reasons for and the Implications of Non-compliance

4.10 During site audits in the reporting quarter, no non-compliance was recorded. Recommendations made in each individual site audit session were attached in the Appendix H.

Summary of Environmental Complaints and Prosecutions

4.11 Thirty-nine (39) cases of environmental complaints on this Project were received in the reporting quarter. The details were attached in the Appendix L.

4.12 No environmental prosecution was received in the reporting quarter.

5. COMMENTS, CONCLUSIONS AND RECOMMENDATIONS

Effectiveness of Mitigation Measures

5.1 The mitigation measures recommended in the EIA report are considered effective in minimizing environmental impacts.

5.2 The Contractor has implemented the recommended mitigation measures except those mitigation measures not applicable at this stage.

5.3 Environmental monitoring works were performed in the reporting quarter and all monitoring results were checked and reviewed.

5.4 The summary record of non-compliance (exceedances) of Action/Limit Level for environmental monitoring in the reporting quarter has been presented in Table I above and in Appendix K.

5.5 Thirty-nine (39) cases of environmental complaints were received in the reporting quarter. The details were attached in the Appendix L.

5.6 No warning, notification of summon and environmental prosecution was received in the reporting quarter. The details were attached in the Appendix L.

Recommendations

5.7 Joint weekly site audits by the representatives of the Engineer, Contractor and the ET were conducted in the reporting quarter. The following recommendations was made to the Contractor for the coming reporting month:

Air Quality Impact

· To implement dust suppression measures such as water spray on all haul roads, stockpiles, dry surfaces, excavation and rock breaking works.

· To cover stockpile of dusty material by impervious material

· To properly display NRMM Label to Powered Mechanical Equipment on site

· To avoid smoke emission from Powered Mechanical Equipment on site

· To remove the dusty cement bags after use.

· To provide sand bag bunds to gullies at site access near the site office

· To provide top and three-side enclosure for grouting equipment on site

· To repair the gaps and the noise tarpaulin sheets to ensure the effectiveness of dust curtain.

Construction Noise

· Machines and plant (such as trucks) that may be in intermittent use should be shut down between works periods or should be throttled down to a minimum.

· To provide mitigation measures to PME as proposed in the approved NMP.

· To repair noise barrier of breaker on site.

· To provide proper acoustic material for enclosing the breaker head

Water Quality Impact

· To prevent any surface runoff discharge into any stream course or the waters in vicinity.

· To review and implement temporary drainage system.

· To ensure properly maintenance for de-silting facilities.

· To clear the silt and sediment in the sedimentation tanks or those accumulated in drainage.

· To provide bund to stockpile storage area on site to avoid leakage of surface runoff.

· To divert all the water generated from construction site to de-silting facilities with enough handling capacity before discharge.

· To provide and repair the silt curtain to fully enclose the site.

· To remove the dusty material to avoid mud/sand fall into the sea.

· To prevent silty water flow out of site during wheel washing

· To provide bunds or containment pit to prevent muddy water flow out of site.

· To remove the construction waste in U-channel.

· To set up proper drainage system within site.

· To cover or seal the gaps of covers of catchpit to prevent silt water or oil stain flow out of site.

· To remove the sand material deposited near the seafront.

· To provide sand bag bunds to gullies

· To cover exposed ground with tarpaulin and sandbag to avoid surface run-off

· Provide sufficient storage/diversion for storm water collected within the site during rainstorm, in order to avoid overflowing the water treatment tanks

Waste/Chemical Management

· To check for any accumulation of waste materials or rubbish on site.

· To avoid any discharge or accidental spillage of chemical waste or oil directly from the site.

· To avoid improper handling or storage of oil drum on site.

· To provide label to identify waste storage area within site.

· To remove oil stain mixed with muddy water within site.

· To provide drip tray to chemical containers

· To remove the construction material from drip tray and provide a plug for drip tray on site.

Landscape and Visual

· To remove the construction material near the tree and set up proper tree protection area

Permit/Licence

· To provide and display the Environmental Permit for the marine barge.

· To update the Environmental Permit displayed on crane barge.

Cultural Heritage

· To properly set up fenced-off buffer zone around Tin Hau Temple.