Environmental Issues	Monitoring Parameters	Action Level	Limit Level	Event & Action
Air Quality	1-Hour TSP	0	0	--	--
24-Hr TSP	0	0	--	--
Construction Noise	Leq_30minDaytime	0	0	--	--
Leq_15minEvening	0	5	Not project related	NA
Water Quality (Marine Water)	DO	0	0	--	--
Turbidity	0	0	--	--
SS	1	3	Not project related	NA

Table of Contents

2. Project Organization and Construction progress and Submission 5

2.1 Project Organization 5

2.2 Construction Progress 6

2.3 Summary of Environmental Submissions 7

3. Summary of Environmental Monitoring Programmes and Requirements 9

3.1 General 9

3.2 Monitoring Parameters 9

3.3 Monitoring Locations 9

3.4 Monitoring Frequency and Period 10

3.5 Monitoring Equipment 11

3.6 Monitoring Procedures 12

3.7 Determination of Action/Limit (A/L) Levels 15

3.8 Data Management and Data QA/QC Control 17

4. Air Quality Monitoring 18

4.1 General 18

4.2 Results of Air Quality Monitoring in the Reporting Month 18

5. Construction Noise Monitoring 19

5.1 General 19

5.2 Results of Noise Monitoring 19

6. Water Quality Monitoring 21

6.1 General 21

6.2 Results of Water quality Monitoring 21

7. Waste Management 26

7.1 General Waste Management 26

7.2 Records of Waste Quantities 26

8. Site Inspection 27

8.1 Requirements 27

8.2 Findings / Deficiencies During the Reporting Month 27

9. Landfill Gas Monitoring 29

9.1 General Requirement 30

9.2 Limit Levels and Event and Action Plan 30

9.3 Landfill Gas Monitoring 30

10. Environmental Complaint and Non-Compliance 32

10.1 Environmental Complaint, Summons and Prosecution 32

11. Implementation Status of Mitigation Measures 33

11.1 General Requirements 33

11.2 Tentative Construction Activities in the Coming Month 33

11.3 Impact Forecast 34

12. Conclusions and Recommendations 35

12.1 Conclusions 35

12.2 Recommendations 35

List of TABLES

Table 2-1 Documents Submission under Environmental Permit Requirement

Table 2-2 Status of Environmental Licenses and Permits of the Project Works (Contract 1)

Table 2-3 Status of Environmental Licenses and Permits of the Project Works (Contract 2)

Table 3-1 Summary of EM&A Requirements

Table 3-2 Designated Air Quality Monitoring Location recommended in EM&A Manual

Table 3-3 Designated Construction Noise Monitoring Location recommended in EM&A Manual

Table 3-4 Designated and interim alternative location for air quality and noise monitoring in the Reporting Period

Table 3-5 Location of Water Quality Monitoring Station

Table 3-6 Air Quality Monitoring Equipment

Table 3-7 Construction Noise Monitoring Equipment

Table 3-8 Water Monitoring Equipment

Table 3-9 Testing Method and Reporting Limit of the Chemical Analysis

Table 3-10 Action and Limit Levels for Air Quality

Table 3-11 Action and Limit Levels for Construction Noise

Table 3-12 Action and Limit Levels for Water Quality

Table 4-1 1-Hour and 24-Hour TSP Air Quality Impact Monitoring results

Table 5-1 Daytime Construction Noise Impact Monitoring results at CNMS-1

Table 5-2 Daytime Construction Noise Impact Monitoring results at CNMS-5

Table 5-3 Evening Construction Noise Impact Monitoring results at CNMS-1

Table 5-4 Evening Construction Noise Impact Monitoring results at CNMS-5

Table 6-1 Result Summary of Depth Average (Surface & Middle Layer) of DO (mg/L)

Table 6-2 Result Summary of Bottom Depth of DO (mg/L)

Table 6-3 Result Summary of Depth Average of Turbidity (NTU)

Table 6-4 Result Summary of Depth Average of Suspended Solid (mg/L)

Table 6-5 Result Summary of Depth Average of Temperature (°C)

Table 6-6 Result Summary of Depth Average of Salinity (ppt)

Table 6-7 Result Summary of Depth Average of pH

Table 6-8 Summary of Water Quality Exceedance

Table 7-1 Summary of Quantities of Inert C&D Materials

Table 7-2 Summary of Quantities of C&D Wastes

Table 8-1 Site Observations of Contract 1

Table 8-2 Site Observations of Contract 1

Table 9-1 Actions in the Event of Landfill Gas Being Detected in Excavations

Table 9-2 Summary of Landfill Gas Measurement Results

Table 10-1 Statistical Summary of Environmental Complaints

Table 10-2 Statistical Summary of Environmental Summons

Table 10-3 Statistical Summary of Environmental Prosecution

Table 11-1 Environmental Mitigation Measures in the Reporting Month

List of Appendices

Appendix A Project Layout Plan

Appendix B Project Organization Chart & Contact Details of Key Personnel

Appendix C 3-Month Rolling Construction Program

Appendix D Monitoring Location (Air Quality, Noise and Water Quality)

Appendix E Event and Action Plan

Appendix F Impact Monitoring Schedule of the Reporting Month and Coming Month

Appendix G Calibration Certificates of Equipment and the Accreditation Laboratory Certificate

Appendix H Database of Monitoring Results

Appendix I Graphical plots of Monitoring Results

Appendix J Meteorological Data

Appendix K Waste Flow Table

Appendix L Implementation Record of Water Mitigation Measures in the Reporting Month

Appendix M Implementation Schedule for Environmental Mitigation Measures (ISEMM)

1. Introduction

1.1 Project Background

1.1.1 Civil Engineering and Development Department (hereafter referred as “CEDD”) is the Project Proponent and the Permit Holder of the Project Cross Bay Link, Tseung Kwan O (hereinafter referred as “the Project”) which is a Designated Project to be implemented under Environmental Permit number EP-459/2013 (hereinafter referred as “the EP-459/2013” or “the EP”).

1.1.2 AUES was awarded the CEDD Contract Agreement No. EDO/04/2018 - Environmental Team for Cross Bay Link, Tseung Kwan O (hereinafter called “the Service Contract”). The Services under the Service Contract is to provide environmental monitoring and audit (EM&A) services for the Works Contracts pursuant to the requirement of Environmental Team (ET) under the Approved EM&A Manual to ensure that the environmental performance of the Works Contracts comply with the requirement specified in the EM&A Manual and EIA Report of Agreement No. CE 43/2008 (HY) Cross Bay Link, Tseung Kwan O - Investigation and other relevant statutory requirements.

1.1.3 To facilitate management, the proposed Works of Cross Bay Link, Tseung Kwan O (hereinafter called “the Project’) was divided into two Civil Engineering and Development Department (CEDD) Works contracts included Contract 1 (Contract No. NE/2017/07) and Contract 2 (Contract No. NE/2017/08). The details of each contract Works are summarized below and the delineation of each contract is shown in Appendix A.

Contract 1 (Contract No. NE/2017/07)

(i) 400m section of marine viaducts of steel deck sections including the Eternal Arch Bridge;

(ii) 600m section of marine viaducts of concrete deck sections;

(iii) An E&M Plantroom and associated building services; and

(iv) E&M provisions.

Contract 2 (Contract No. NE/2017/08)

(i) Elevated deck structures along Road D9;

(ii) A 210m section of cycle track and footpath ramp bridge;

(iii) A 630m section of noise semi-enclosure covering the entire length of Road D9, and;

(iv) Lift, staircase, modification of existing seawall along Road D9, landscaping and miscellaneous works.

1.1.4 The date for commencement of Contract 1 is 3^rd December 2018 while the date for commencement of Contract 2 is 17^th January 2019.

1.1.5 As part of the EM&A programme, baseline monitoring shall be undertaken before the Project construction work commencement to determine the ambient environmental condition. The baseline air quality, background noise and water quality monitoring has been carried out between 21^st September 2018 and 13^th November 2018 at the designated and interim locations. The baseline monitoring report under the EP-459/2013 has been compiled by the ET and verified by Independent Environmental Checker (hereinafter the “IEC’) prior submitted to EPD on 19^th November 2018 for endorsement.

1.1.6 This is the 12^th Monthly EM&A report presenting the monitoring results and inspection findings for the reporting period from 1^st to 30^th November 2019 (hereinafter ‘the Reporting Period’).

1.2 Report Structure

1.2.1 The Environmental Monitoring and Audit (EM&A) Monthly Report is structured into the following sections:-

*Section 1*	Introduction
*Section 2*	Project Organization and Construction Progress
*Section 3*	Summary of Impact Monitoring Requirements
*Section 4*	Air Quality Monitoring
*Section 5*	Construction Noise Monitoring
*Section 6*	Water Quality Monitoring
*Section 7*	Waste Management
*Section 8*	Site Inspections
*Section 9*	Landfill Gas Monitoring
*Section 10*	Environmental Complaints and Non-Compliance
*Section 11*	Implementation Status of Mitigation Measures
*Section 12*	Conclusions and Recommendations

2. Project Organization and Construction progress and Submission

2.1 Project Organization

2.1.1 The project organization is shown in Appendix B. The responsibilities of respective parties are:

The Project Consultant

2.1.2 The Project Consultant (hereinafter “the Consultant”) is responsible for overseeing the construction works and for ensuring that the works are undertaken by the Contractor in accordance with the specification and contract requirements. The duties and responsibilities of the Consultant with respect to EM&A are:

· Monitor the Contractors’ compliance with contract specifications, including the implementation and operation of the environmental mitigation measures and their effectiveness

· Monitor Contractors’, ET’s and IEC’s compliance with the requirements in the Environmental Permit (EP) and EM&A Manual

· Facilitate ET’s implementation of the EM&A programme

· Participate in joint site inspection by the ET and IEC

· Oversee the implementation of the agreed Event / Action Plan in the event of any exceedance

· Adhere to the procedures for carrying out complaint investigation

The Contractor(s) of Works Contract(s)

2.1.3 There will be one contractor for each individual works contract. The Contractor(s) should report to the Consultant. The duties and responsibilities of the Contractor are:

· Comply with the relevant contract conditions and specifications on environmental protection

· Participate in the site inspections by the ET and IEC, and undertake any corrective actions

· Provide information / advice to the ET regarding works programme and activities which may contribute to the generation of adverse environmental impacts

· Submit proposals on mitigation measures in case of exceedances of Action and Limit levels in accordance with the Event / Action Plans

· Implement measures to reduce impact where Action and Limit levels are exceeded

· Adhere to the procedures for carrying out complaint investigation

Environmental Team (ET)

2.1.4 ET shall not be in any way an associated body of the Contractor(s) and employed by the Permit Holder (i.e., CEDD) to conduct the EM&A programme. The ET should be managed by the ET Leader. The ET Leader shall be a person who has at least 7 years’ experience in EM&A and has relevant professional qualifications. Suitable qualified staff should be included in the ET, and resources for the implementation of the EM&A programme should be allocated in time under the Contract(s), to enable fulfillment of the Project’s EM&A requirements as specified in the EM&A Manual during construction of the Project. ET shall report to the Project Proponent and the duties shall include:

· Conduct baseline monitoring, impact monitoring and post-construction monitoring and the associated in-situ and laboratory tests to monitor various environmental parameters as required in the EM&A Manual and the EP

· Analyze the environmental monitoring and audit data, review the success of EM&A programme and the adequacy of mitigation measures implemented, confirm the validity of the EIA predictions and identify any adverse environmental impacts arising

· Carry out regular site inspection to investigate and audit the Contractors’ site practice, equipment/plant and work methodologies with respect to pollution control and environmental mitigation, and effect proactive action to pre-empt problems

· Monitor compliance with conditions in the EP, environmental protection, pollution prevention and control regulations and contract specifications

· Audit environmental conditions on site

· Report on the environmental monitoring and audit results to EPD, the Consultant, the IEC and Contractor(s) or their delegated representatives

· Recommend suitable mitigation measures to the Contractor in the case of exceedance of Action and Limit levels in accordance with the Event and Action Plans

· Liaise with the IEC on all environmental performance matters and timely submit all relevant EM&A proforma for approval by IEC

· Advise the Contractor(s) on environmental improvement, awareness, enhancement measures etc., on site

· Adhere to the procedures for carrying out complaint investigation

· Set up a dedicated web site where the project information, all environmental monitoring and audit data and reports described in Condition 5.2 of the EP, and all finalized submissions and plans required under the EP are to be placed for public inspection

· Upload the environmental monitoring results to the dedicated web site in accordance with requirements of the EP and EM&A Manual

· To carry out the Operational Phase Landfill Gas monitoring during effluent drainage system maintenance for one year

Independent Environmental Checker (IEC)

2.1.5 IEC will be employed for this Project. The Independent Environmental Checker (IEC) should not be in any way an associated body of the Contractor(s) or the ET for the Project. The IEC should be employed by the Permit Holder (i.e., CEDD) prior to the commencement of the construction of the Project. The IEC should have at least 7 years’ experience in EM&A and have relevant professional qualifications. The duty of IEC should be:

· Provide proactive advice to the Project Consultant and the Project Proponent on EM&A matters related to the project, independent from the management of construction works, but empowered to audit the environmental performance of construction

· Review and audit all aspects of the EM&A programme implemented by the ET

· Review and verify the monitoring data and all submissions in connection with the EP and EM&A Manual submitted by the ET

· Arrange and conduct regular, at least monthly site inspections of the works during construction phase, and ad hoc inspections if significant environmental problems are identified

· Check compliance with the agreed Event / Action Plan in the event of any exceedance

· Check compliance with the procedures for carrying out complaint investigation

· Check the effectiveness of corrective measures

· Feedback audit results to ET by signing off relevant EM&A proforma

· Check that the mitigation measures are effectively implemented

· Report the works conducted, the findings, recommendation and improvement of the site inspections, after reviewing ET’s and Contractor’s works, and advices to the Project Consultant and Project Proponent on a monthly basis

2.2 Construction Progress

2.2.1 3-month rolling construction program of the each Works Contract is enclosed in Appendix C; and the major construction activities undertaken in the Reporting Period is presented in below sub-sections.

Contract 1 (Contract No. NE/2017/07)

2.2.2 The major construction activities of Contract 1 undertaken in this Reporting Period are:-

Ÿ Piling works at Portion II

Ÿ Welding of steel bracket for precast shell installation at Portion II

Ÿ Fabrication of bottom deck panels, top deck panels and diaphragm panels at Portion II

Ÿ Precast shell fabrication at Portion II

Ÿ Structure works for E&M Building

Contract 2 (Contract No. NE/2017/08)

2.2.3 The major construction activities of Contract 2 undertaken in this Reporting Period are:-

Ÿ Bored-Piling Works (Portion VI & VII & III)

Ÿ Pre-bored Socket H-Pile (Portion VI)

Ÿ Pre-drilling Works (Portion VI)

Ÿ Excavation Work (Portion VI)

Ÿ Drainage Installation Work (Portion III)

Ÿ Sheet pile Work (Portion VI)

2.3 Summary of Environmental Submissions

2.3.1 The required documents list below shall be to submit to EPD for retention:

Table 2-1 Documents Submission under Environmental Permit Requirement

EP condition	Submission to EPD	Requirement	Situation
1.11	Commencement date of construction of the Project	no later than 1 month prior to the commencement of construction of the Project	Ÿ Contract 1 notified EPD on 19 Oct 2018 Ÿ Contract 2 notified EPD on 12 Dec 2018
2.3	The date of setting up the Community Liaison Group (CLG), the membership, the terms of reference and the contact details	At least 1 month before the commencement of construction of the Project	Ÿ CLG setting has submitted to EPD on 9 Oct 2018
2.4	Management Organization of Main Construction Companies	No later than 2 weeks before the commencement of construction of the Project	Ÿ Management Organization of Contract 1 was submitted to EPD on 2 October 2018 Ÿ Management Organization of Contract 2 was submitted to EPD on 12 December 2018
2.5	Waste Management Plan (WMP)	No later than 1 month before commencement of construction of the Project	Ÿ WMP of Contract 1 was submitted to EPD in 11 October 2018 Ÿ WMP of Contract 2 was submitted to EPD in 14 December 2018
2.6	Landscape Mitigation Plan (LSMP)	No later than 1 month before commencement of construction of the Project	Ÿ LSMP was submitted on 1 Nov 2018
2.7	Detailed Qualitative Landfill Gas Hazards Assessment (QLGHA)	No later than 1 month before commencement of construction of the Project	Ÿ QLGHA of the Project was submitted to EPD on 1 November 2018

2.3.2 Upon completed baseline monitoring, a Baseline Monitoring Report was verified by IEC on 19 November 2018 and submitted to EPD on that day for endorsement.

2.3.3 The notification of Project dedicated web site to EPD was made on 9 January 2019 (http://www.envcbltko.hk/).

2.3.4 Summary of the relevant permits, licenses, and/or notifications on environmental protection for the Project are presented in Table 2-2.

Table 2-2 Status of Environmental Licenses and Permits of the Project Works (Contract 1)

Item	Description	License/Permit Status
		Permit no./ Account no./ Ref. no.	Valid Period		Status
		Permit no./ Account no./ Ref. no.	From	To	Status
1	Notification pursuant to Air pollution Control (Construction Dust) Regulation	--	--	--	Notified on 11 July 2018
2	Chemical Waste Producer Registration	5213-839-C1232-19	28 Aug 2018	N/A	--
3	Water Pollution Control Ordinance - Discharge License	WT00032842-2018	1 Mar 2019	31 Mar 2024	Valid until 31 March 2024
3	Water Pollution Control Ordinance - Discharge License	WT00034178-2019	15 Jul 2019	31 Jul 2024	Valid until 31 July 2024
4	Billing Account for Disposal of Construction Waste	7031412	24 Jul 2018	N/A	--
4	Billing Account for Disposal of Construction Waste (through Vessel delivering)	7032666	07 Nov 2019	07 Feb 2020	Valid until 07 Feb 2020
5	Marine Dumping Permit	EP-MD-20-080	30 Oct 2019	29 Apr 2020	Valid until 29 Apr 2020
6	Construction Noise Permit	GW-RE0886-19	5 Nov 2019	29 Dec 2019	Valid until 29 Dec 2019

Remark: Evening marine work at Portion II for Contract 1 was scheduled from 4 – 7, 11 – 16, 18 – 23 and 25 - 30 November 2019

Table 2-3 Status of Environmental Licenses and Permits of the Project Works (Contract 2)

Item	Description	License/Permit Status
		Permit no./ Account no./ Ref. no.	Valid Period		Status
		Permit no./ Account no./ Ref. no.	From	To	Status
1	Notification pursuant to Air pollution Control (Construction Dust) Regulation	--	--	--	Notified on 31 October 2018
2	Chemical Waste Producer Registration	5213-839-B2500-04	22 Nov 2018	N/A	--
3	Water Pollution Control Ordinance - Discharge License	WT00034244-2019	8 Jul 2019	31 Jul 2024	Valid until 31 July 2024
4	Billing Account for Disposal of Construction Waste	7032702	8 Nov 2018	N/A	--
5	Marine Dumping Permit	EP/MD/20-073	24 Oct 2019	23 Apr 2020	Valid until 23 April 2020
6	Construction Noise Permit	GW-RE0927-19	14 Nov 2019	30 Apr 2020	Valid until 30 Apr 2020

Remark: No evening work and night work was carried out for Contract 2

3. Summary of Environmental Monitoring Programmes and Requirements

3.1 General

3.1.1 The Environmental Monitoring and Audit Programmes and requirements are set out in the Approved EM&A manual. Environmental issues such as air quality, construction noise and water quality were identified as the key issues during the construction phase of the Project. A summary of EM&A programmes and requirements are presented in the sub-sections below.

3.2 Monitoring Parameters

3.2.1 Monitoring parameters of air quality, noise and water quality are summarized in Table 3-1.

Table 3-1 Summary of EM&A Requirements

Environmental Issue	Parameters
Air Quality	Ÿ 1-hour TSP by Real-Time Portable Dust Meter; and Ÿ 24-hour TSP by High Volume Air Sampler
Noise	Ÿ Leq (30min) in six consecutive Leq(5 min) between 07:00-19:00 on normal weekdays Ÿ Supplementary information for data auditing, statistical results such as L₁₀ and L₉₀ shall also be obtained for reference.
Water Quality	Ÿ In-situ measurement – Dissolved Oxygen (DO) concentration (mg/L) & saturation (%), pH, Salinity (mg/L), Temperature (ºC) and Turbidity (NTU); and Ÿ Laboratory analysis – SS (mg/L)

3.3 Monitoring Locations

Air Quality and Construction Noise

3.3.1 According to the Approved EM&A Manual Section 5.4 and Section 6.3, three (3) representative air sensitive receivers (ASR) and four (4) representative noise sensitive receivers were designated as monitoring stations. The designated air quality and noise monitoring locations are listed in Table 3-2 and Table 3-3, and illustrated in Appendix D.

Table 3-2 Designated Air Quality Monitoring Location recommended in EM&A Manual

ID	Location in the EM&A Manual	Currently Situation
AM1	Tung Wah Group of Hospitals Aided Primary School & Secondary School	Not yet construct
AM2	Lohas Park Stage 2 (Planned Development in Area 86)	Under Construction
AM3	Lohas Park Stage 3 (Planned Development in Area 86)	Under Construction

Table 3-3 Designated Construction Noise Monitoring Location recommended by EM&A Manual

ID	Location	Currently Situation
CNMS-1	Lohas Park Stage 1(Planned Development in Area 86, Package 4) (Southeast facade)	Available for resident occupation in November 2019
CNMS-2	Lohas Park Stage 1 (Planned Development in Area 86, Package 6) (Southeast facade)	Under Construction
CNMS-3	Lohas Park Stage 3 (Planned Development in Area 86,Package 11) (West facade)	Under Construction
CNMS-4	Tung Wah Group of Hospitals Aided Primary School & Secondary School (Southwest facade)	Not yet construct

3.3.2 As observed and confirmed by ET and IEC during the joint site visit on 29^th August 2018, the designated air quality and noise monitoring locations are under construction or yet to construct. It is considered that these designated locations are not appropriate to perform air quality and noise monitoring. In this regard, alternative locations were proposed as interim arrangement to carry out air quality and noise monitoring before occupation of the designated monitoring location. A letter enclosed with the alternative location proposal and IEC verification (Our Ref: TCS00975/18/300/L0038) was sent to EPD on 19^th October 2018 and the proposal was agreed by EPD. Therefore, air quality and construction noise impact monitoring would be performed at the agreed alternative locations until the designated sensitive receivers occupied and granted the premises.

3.3.3 The designated and interim alternative monitoring location for impact air quality and noise monitoring in the Reporting Period are summarized in Table 3-4 and illustrated in Appendix D.

Table 3-4 Designated and interim alternative location for air quality and noise monitoring in the Reporting Period

Location ID	Monitoring Parameter	Location
AM4	1-Hour TSP Air Quality	Podium of Lohas Park Phase 2A (Le Prestige)
AM5	24-Hour TSP Air Quality	Boundary of Site Office near Junction of Wan Po Road and Wan O Road
CNMS-1	Noise (L_eq, L₁₀ & L₉₀)	Podium of Lohas Park Package 4
CNMS-5	Noise (L_eq, L₁₀ & L₉₀)	Podium of Lohas Park Phase 2A (Le Prestige)

Remark: Since 24-Hour TSP Air Quality monitoring is not granted at AM4 Lohas Park Phase 2A, the 24-Hour TSP monitoring was therefore proposed at AM5 which is located at the boundary of the project site office.

Water Quality

3.3.4 According to Table 7.1 of the approved EM&A Manual Section 7.4, two Control Stations (C3 & C4), six (6) sensitive receivers (CC1, CC2, CC3, CC4, CC13 & SWI1) and one (1) Gradient station (I1) are recommended to perform water quality monitoring. Details and coordinate of these water quality monitoring stations are described in Table 3-5 and the locations is shown in Appendix D.

Table 3-5 Location of Water Quality Monitoring Station

Station	Coordinates		Description
Station	Easting	Northing	Description
CC1	843201	816416	Sensitive Receiver – Coral Sites at Chiu Keng Wan
CC2	844076	817091	Sensitive Receiver – Coral Sites at Junk Bay
CC3	844606	817941	Sensitive Receiver – Coral Sites at Junk Island
CC4	845444	815595	Sensitive Receiver – Coral Sites at Fat Tong Chau West
CC13	844200	817495	Sensitive Receiver – Coral Sites at Junk Bay near Chiu Keng Wan
SWI1	845512	817442	Sensitive Receiver – Tseung Kwan O Salt Water Intake
C3	843821	816211	Control Station (Ebb Tide) – within Junk Bay
C4	844621	815770	Control Station (Flood Tide) – within Junk Bay
I1	844602	817675	Gradient Station – in between Lam Tin Tunnel (LTT) and CBL

3.4 Monitoring Frequency and Period

3.4.1 To according with the approved EM&A Manual, impact monitoring requirements are presented as follows.

Air Quality Monitoring

3.4.2 Air quality impact monitoring frequency is as follows:

Ÿ Once every 6 days of 24-hour TSP and 3 times of 1-hour TSP monitoring; during course of works throughout the construction period

Construction Noise Monitoring

3.4.3 Construction noise monitoring frequency is as follows:

Ÿ One set of Leq_(30min)measurements in a weekly basis between 07:00 and 19:00 hours on normal weekdays during course of works as throughout the construction period

Ÿ If construction works are extended to include works during the hours of 1900-0700, additional weekly impact monitoring shall be carried out during evening and night-time works. Applicable permits under the NCO shall be obtained by the Contractor.

Water Quality (Marine Water) Monitoring

3.4.4 Marine water impact monitoring frequency is as follows:

Ÿ Three days a week, at mid ebb and mid flood tides during course of pile excavation works for the bridge pier foundations underway. Moreover, the intervals between 2 consecutive sets of monitoring day shall not be less than 36 hours.

3.5 Monitoring Equipment

Air Quality Monitoring

3.5.1 The 24-hour and 1-hour TSP levels shall be measured by following the standard high volume sampling method as set out in the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B. If the ET proposes to use a direct reading dust meter to measure 1-hour TSP levels, it shall submit sufficient information to the IEC to prove that the instrument is capable of achieving a comparable results to the HVS. The instrument should be calibrated regularly, and the 1-hour sampling shall be determined on yearly basis by the HVS to check the validity and accuracy of the results measured by direct reading method. The filter paper of 24-hour TSP measurement shall be determined by HOKLAS accredited laboratory. The equipment used for air quality monitoring is listed in Table 3-6.

Table 3-6 Air Quality Monitoring Equipment

Equipment		Model
24-hour TSP	High Volume Air Sampler	TISCH High Volume Air Sampler, HVS Model TE-5170
24-hour TSP	Calibration Kit	TISCH Model TE-5025A (S/N: 438320)
1- hour TSP	Portable Dust Meter	Laser Dust Monitor Sibata LD-3B Laser Dust Monitor (S/N: 3Y6503)

Noise Monitoring

3.5.2 Sound level meter in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications shall be used for carrying out the noise monitoring. The sound level meter shall be checked using an acoustic calibrator. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in ms^-1. Noise equipment will be used for impact monitoring is listed in Table 3-7.

Table 3-7 Construction Noise Monitoring Equipment

Equipment	Model
Integrating Sound Level Meter	Rion NL-52 ( S/N:00464681)
Calibrator	Rion NC-74 (S/N:34657231)
Portable Wind Speed Indicator	Anemometer AZ Instrument 8908

Water Quality Monitoring

3.5.3 For water quality monitoring, the equipment should fulfill the requirement under the Approved EM&A Manual Section 7.2. The requirement is summarized below:

• Dissolved Oxygen and Temperature Measuring Equipment – The instrument should be a portable, weatherproof dissolved oxygen measuring instrument completed with cable, sensor, comprehensive operation manuals, and should be operable from a DC power source. It should be capable of measuring: dissolved oxygen levels in the range of 0-20 mg/L and 0-200% saturation; and a temperature of 0-45 degrees Celsius. It should have a membrane electrode with automatic temperature compensation complete with a cable of not less than 35 m in length. Sufficient stocks of spare electrodes and cable should be available for replacement where necessary.

• Turbidity Measurement Equipment – The instrument shall be a portable, weatherproof turbidity-measuring instrument complete with comprehensive operation manual. The equipment shall use a DC power source. It shall have a photoelectric sensor capable of measuring turbidity between 0-1000 NTU.

• Salinity Measurement Instrument – A portable salinometer capable of measuring salinity in the range of 0-40 ppt should be provided for measuring salinity of the water at each monitoring location.

• Water Depth Detector – A portable, battery-operated echo sounder should be used for the determination of water depth at each designated monitoring station. A detector affixed to the bottom of the works boat, if the same vessel is to be used throughout the monitoring programme, is preferred.

• Positioning Device – hand-held or boat-fixed type digital Global Positioning System (GPS) with way point bearing indication or other equipment instrument of similar accuracy, should be provided and used during water quality monitoring to ensure the monitoring vessel is at the correct location before taking measurements.

• Water Sampling Equipment – A water sampler, consisting of a transparent PVC or glass cylinder of not less than two liters, which can be effectively sealed with cups at both ends, should be used. The water sampler should have a positive latching system to keep it open and prevent premature closure until released by a messenger when the sampler is at the selected water depth.

3.5.4 Equipment used for water quality impact monitoring is listed in Table 3-8.

Table 3-8 Water Monitoring Equipment

Equipment	Model
A Digital Global Positioning System	GPS12 Garmin
Water Depth Detector	Eagle Sonar CUDA 300
Water Sampler	A 2-litre transparent PVC cylinder with latex cups at both ends
Thermometer & DO meter	YSI ProDSS Digital Sampling System Water Quality Meter (S/N: 15H102620/15H103928)
pH meter
Turbidimeter
Salinometer
Sample Container	High density polythene bottles (provided by laboratory)
Storage Container	‘Willow’ 33-litter plastic cool box with Ice pad

3.6 Monitoring Procedures

Air Quality

1-hour TSP

3.6.1 The 1-hour TSP monitor was a brand named “Sibata LD-3 Laser Dust monitor Particle Mass Profiler & Counter” which is a portable, battery-operated laser photometer. The 1-hour TSP meter provides a real time 1-hour TSP measurement based on 90^o light scattering. The 1-hour TSP monitor consists of the following:

(a.) A pump to draw sample aerosol through the optic chamber where TSP is measured;

(b.) A sheath air system to isolate the aerosol in the chamber to keep the optics clean for maximum reliability; and

(c.) A built-in data logger compatible with Windows based program to facilitate data collection, analysis and reporting.

24-hour TSP

3.6.2 The equipment used for 24-hour TSP measurement is TISCH, Model TE-5170 TSP High Volume Air Sampler, which complied with EPA Code of Federal Regulation, Appendix B to Part 50. The High Volume Air Sampler (HVS) consists of the following:

(a.) An anodized aluminum shelter;

(b.) A 8”x10” stainless steel filter holder;

(c.) A blower motor assembly;

(d.) A continuous flow/pressure recorder;

(e.) A motor speed-voltage control/elapsed time indicator;

(f.) A 7-day mechanical timer, and

(g.) A power supply of 220v/50 Hz

3.6.3 For HVS for 24-hour TSP monitoring, the HVS is mounted in a metallic cage with a top for protection and also it is sat on the existing ground or the roof of building. The flow rate of the HVS between 0.6m³/min and 1.7m³/min will be properly set in accordance with the manufacturer’s instruction to within the range recommended in EPA Code of Federal Regulation, Appendix B to Part 50. Glass Fiber Filter 8" x 10" of TE-653 will be used for 24-Hour TSP monitoring and would be supplied by laboratory. The general procedures of sampling are described as below:-

Ÿ A horizontal platform with appropriate support to secure the samples against gusty wind should be provided;

Ÿ No two samplers should be placed less than 2 meters apart;

Ÿ The distance between the sampler and an obstacle, such as building, must be at least twice the height that the obstacle protrudes above the sample;

Ÿ A minimum of 2 meters of separation from any supporting structure, measured horizontally is required;

Ÿ Before placing any filter media at the HVS, the power supply will be checked to ensure the sampler work properly;

Ÿ The filter paper will be set to align on the screen of HVS to ensure that the gasket formed an air tight seal on the outer edges of the filter. Then filter holder frame will be tightened to the filter hold with swing bolts. The holding pressure should be sufficient to avoid air leakage at the edge.

Ÿ The mechanical timer will be set for a sampling period of 24 hours (00:00 mid-night to 00:00 mid-night next day). Information will be recorded on the field data sheet, which would be included the sampling data, starting time, the weather condition at current and the filter paper ID with the initial weight;

Ÿ After sampling, the filter paper will be collected and transfer from the filter holder of the HVS to a sealed envelope and sent to a local HOKLAS accredited laboratory for quantifying.

3.6.4 All the sampled 24-hour TSP filters will be kept in normal air conditioned room conditions, i.e. 70% HR (Relative Humidity) and 25^oC, for six months prior to disposal.

3.6.5 The HVS used for 24-hour TSP monitoring will be calibrated in two months interval for in accordance with the manufacturer’s instruction using the NIST-certified standard calibrator (Tisch Calibration Kit Model TE-5025A) to establish a relationship between the follow recorder meter reading in cfm (cubic feet per minute) and the standard flow rate, Qstd, in m³/min. Motor brushes of HVS will be regularly replaced. The calibration certificates of the air quality monitoring equipment used for the impact monitoring and the HOKLAS accredited certificate of laboratory was provided in Appendix G.

Noise Monitoring

3.6.6 As referred to in the Technical Memorandum (TM) issued under the NCO, sound level meters in compliance with the International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1) specifications shall be used for carrying out the noise monitoring. Immediately prior to and following each noise measurement the accuracy of the sound level meter shall be checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Measurements may be accepted as valid only if the calibration levels from before and after the noise measurement agree to within 1.0 dB.

3.6.7 All noise measurements will be performed with the meter set to FAST response and on the A-weighted equivalent continuous sound pressure level (Leq). Leq₍_{30 min)} in six consecutive Leq_{(5 min)} measurements will be used as the monitoring parameter for the time period between 07:00-19:00 hours on weekdays throughout the construction period.

3.6.8 The sound level meter will be mounted on a tripod at a height of 1.2 m and placed at the assessment point and oriented such that the microphone is pointed to the site with the microphone facing perpendicular to the line of sight. The windshield will be fitted for all measurements. Where a measurement is to be carried out at a building, the assessment point would normally be at a position 1 m from the exterior of the building façade. Where a measurement is to be made for noise being received at a place other than a building, the assessment point would be at a position 1.2 m above the ground in a free-field situation, i.e. at least 3.5 m away from reflective surfaces such as adjacent buildings or walls.

3.6.9 Immediately prior to and following each noise measurement the accuracy of the sound level meter will be checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Measurements will be accepted as valid only if the calibration level from before and after the noise measurement agrees to within 1.0 dB.

3.6.10 Noise measurements will not be made in fog, rain, wind with a steady speed exceeding 5m/s or wind with gusts exceeding 10m/s. The wind speed will be checked with a portable wind speed meter capable of measuring the wind speed in m/s.

3.6.11 The sound level meter and calibrator are calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme at yearly basis. The calibration certificates of noise monitoring equipment used for the impact monitoring was provided in Appendix G.

Marine Water Quality

3.6.12 Marine water quality monitoring would be conducted at all designated locations in accordance with Table 7.1 of the approved EM&A Manual. The procedures of water sampling, in-situ measurement and chemical analysis are described as below:

Ÿ A Global Positioning System (GPS) will be used to ensure that the correct location was selected prior to sample collection. A portable, battery-operated echo sounder was used for the determination of water depth at each designated monitoring station.

Ÿ The marine water sampler will be lowered into the water body at a predetermined depth. The trigger system of the sampler is activated with a messenger and opening ends of the sampler are closed accordingly then the sample of water is collected.

Ÿ During the sampling, the sampling container will be rinsed to use a portion of the marine water sample before the water sample is transferred to the container. Upon sampling completion, the container will be sealed with a screw cap.

Ÿ Before the sampling process, general information such as the date and time of sampling, weather condition and tidal condition as well as the personnel responsible for the monitoring will be recorded on the monitoring field data sheet.

Ÿ In-situ measurement including water temperature, turbidity, dissolved oxygen, salinity, pH and water depth will be recorded at the identified monitoring station and depth. At each station, marine water samples will be collected at three depths: 1m below water surface, 1m above sea bottom and at mid-depth when the water depth exceeds 6m. Samples at 1m below water surface and 1m above sea bottom will be collected when the water depth is between 3m and 6m. And sample at mid-depth will be taken when the water depth is below 3m.

Ÿ For the in-situ measurement, two consecutive measurements of sampling depth, temperature, dissolved oxygen, salinity, turbidity and pH concentration will be measured at the sea. The YSI ProDSS Multifunctional Meter will be retrieved out of the water after the first measurement and then re-deployed for the second measurement. Where the difference in the value between the first and second readings of each set is more than 25% of the value of the first reading, the reading is discarded and further readings is taken.

Ÿ Marine water sample will be collected by using a water sampler. The high-density polythene bottles will be filled after the water sample collected from the sea. Before the water sample being fills into the sampling bottles, the sampling bottles will be pre-rinsed with the same water sample. The sampling bottles will then be packed in cool-boxes (cooled at 4^OC without being frozen), and delivered to HOKLAS accredited laboratory for the chemical analysis as followed APHA Standard Methods for the Examination of Water and Wastewater 19ed 2540D, unless otherwise specified.

3.6.13 Before each round of monitoring, the dissolved oxygen probe will be calibrated by wet bulb method; a zero check in distilled water will be performed with the turbidity and salinity probes. The turbidity probe also will be checked with a standard solution of known NTU and known value of the pH standard solution were used to check the accuracy of pH value before each monitoring day. Moreover, all in-situ measurement equipment used marine water monitoring will be calibrated at three months interval.

Laboratory Analysis

3.6.14 All water samples included the duplicate samples, was tested with chemical analysis as specified in the EM&A Manual by a HOKALS accredited laboratory - ALS Technichem (HK) Pty Ltd. The chemicals analysis method and reporting limit show Table 3-9.

Table 3-9 Testing Method and Reporting Limit of the Chemical Analysis

Parameter	ALS Method Code	In-house Method Reference ⁽¹⁾	Reporting Limit
Total Suspended Solids	EA025	APHA 2540D	1 mg/L

Note:

1. The exact method shall depend on the laboratory accredited method. APHA = Standard Methods for the Examination of Water and Wastewater by the American Public Health Association.

3.6.15 The determination works will start within 24 hours after collection of the water samples or within the holding time as advised by the laboratory.

Meteorological Information

3.6.16 The meteorological information including wind direction, wind speed, humidity and temperature etc. of impact monitoring is extracted from the closest Tseung Kwan O Hong Kong Observatory Station. Moreover, the data of rainfall and air pressure would be extracted from King’s Park Station.

3.6.17 For marine water quality monitoring, tidal information would be referred to tide gauge at Tai Miu Wan.

3.7 Determination of Action/Limit (A/L) Levels

3.7.1 The baseline results form the basis for determining the environmental acceptance criteria for the impact monitoring. A summary of the Action/Limit (A/L) Levels for air quality, construction noise and water quality are shown in Tables 3-10, 3-11 and 3-12 respectively.

Table 3-10 Action & Limit Levels of Air Quality (1-Hour & 24-Hr TSP)

Monitoring Station	Action Level (mg /m³)		Limit Level (mg/m³)
Monitoring Station	1-Hour TSP	24-Hr TSP	1-Hour TSP	24-Hr TSP
AM4	278	NA	500	NA
AM5	NA	190	NA	260
Note: 1-Hour & 24-Hr TSP of Action Level = (Average Baseline Results × 1.3 + Limit level)/2

Table 3-11 Action and Limit Levels for Construction Noise, dB(A)

Monitoring Location	Action Level	Limit Level
CNMS-5	Time Period: 0700-1900 hours on normal weekdays (Leq30min)
	When one or more documented complaints are received	75 dB(A)
	Time Period: 1900-2300 hours on all days (Leq15min)
	When one or more documented complaints are received	55 dB(A)
Remarks: 1. Construction noise monitoring will be resumed at the designated locations CNMS-1, CNMS-2, CNMS-3 and CNMS4 once they are available and permission are granted; 2. The designated locations CNMS-1, CNMS-2 and CNMS-3 are located at residential building which are still under construction, Limit Level of 75dB(A) will be adopted until they are occupied; 3. The designated location CNMS-4 is located at planned school and still not yet to construction. When the school occupied and operated, Limit Level of 70dB(A) should be adopted and should be reduced to 65dB(A) during examination period; and 4. If construction works are required during restricted hours, the conditions stipulated in the construction noise permit issued by the Noise Control Authority shall be followed.

Table 3-12 Action and Limit Levels for Water Quality

Monitoring Station	Depth Average of SS (mg/L)
Monitoring Station	Action Level			Limit Level
CC1	7.8	OR 120% of upstream control station at the same tide of the same day (Control Station C3 at Ebb tide and Control Station C4 at Flood tide), whichever is higher		9.3	OR 130% of upstream control station at the same tide of the same day (Control Station C3 at Ebb tide and Control Station C4 at Flood tide) , whichever is higher
CC2	9.0			9.2
CC3	8.2			9.0
CC4	13.8			15.4
CC13	8.9			10.3
SWI1	8 mg/L			10 mg/L

Monitoring Location	Dissolved Oxygen (mg/L)
	Depth Average of Surface and Mid-depth			Bottom
	Action Level		Limit Level	Action Level		Limit Level
CC1	5.8		5.7	5.3		5.2
CC2	5.8		5.7	5.3		5.1
CC3	5.5		5.4	4.9		4.7
CC4	5.7		5.7	5.5		5.4
CC13	5.6		5.5	5.3		5.2
SWI1	5.4		4.8	5.1		5.0

Monitoring Location	Depth Average of Turbidity (NTU)
Monitoring Location	Action Level			Limit Level
CC1	5.8	OR 120% of upstream control station at the same tide of the same day (Control Station C3 at Ebb tide and Control Station C4 at Flood tide) , whichever is higher		6.0	OR 130% of upstream control station at the same tide of the same day (Control Station C3 at Ebb tide and Control Station C4 at Flood tide) , whichever is higher
CC2	4.6			5.5
CC3	4.8			5.4
CC4	6.1			7.1
CC13	6.0			6.3
SWI1	6.1			7.1

3.7.2 Should non-compliance of the environmental quality criteria occurs, remedial actions will be triggered according to the Event and Action Plan which presented in Appendix E.

3.8 Data Management and Data QA/QC Control

3.8.1 All monitoring data will be handled by the ET’s in-house data recording and management system. The monitoring data recorded in the equipment will be downloaded directly from the equipment at the end of each monitoring day. The downloaded monitoring data will input into a computerized database properly maintained by the ET. The laboratory results will be input directly into the computerized database and checked by personnel other than those who input the data.

3.8.2 For monitoring parameters that require laboratory analysis, the local laboratory shall follow the QA/QC requirements as set out under the HOKLAS scheme for the relevant laboratory tests.

4. Air Quality Monitoring

4.1 General

4.1.1 In the Reporting Period, 1-Hour TSP and 24-Hr TSP of air quality monitoring were respectively performed at interim alternative monitoring locations AM4 and AM5. The air quality monitoring schedule is presented in Appendix F.

4.1.2 Valid calibration certificates of monitoring equipment are shown in Appendix G and the monitoring results are summarized in the following sub-sections

4.2 Results of Air Quality Monitoring in the Reporting Month

4.2.1 During the Reporting Period, 15 sessions of 1-hour TSP and 6 sessions of 24-hours TSP monitoring were carried out and the monitoring results are summarized in Table 4-1. The detailed 24-hour TSP monitoring data are presented in Appendix H and the relevant graphical plots are shown in Appendix I.

Table 4-1 1-Hour and 24-Hour TSP Air Quality Impact Monitoring Results

AM5		AM4
24-Hr TSP (mg/m³)		1-Hour TSP (mg/m³)
Date	Meas. Result	Date	Start Time	1^st Meas.	2^nd Meas.	3^rd Meas.
1-Nov-19	150	2-Nov-19	9:29	80	76	74
7-Nov-19	173	8-Nov-19	13:50	79	82	86
13-Nov-19	149	14-Nov-19	13:52	96	102	99
19-Nov-19	165	20-Nov-19	13:42	89	95	104
25-Nov-19	168	26-Nov-19	10:36	77	73	72
30-Nov-19	175	--	--	--	--	--
Average (Range)	163 (149 – 175)	Average (Range)		86 (72 – 104)

4.2.2 As shown in Table 4-1, all the 1-hour TSP and 24-hour TSP monitoring results were below the Action / Limit Levels. No Notification of Exceedance (NOE) was issued in this Reporting Period.

4.2.3 The meteorological data during impact monitoring period is summarized in Appendix J.

5. Construction Noise Monitoring

5.1 General

5.1.1 As notified on 7 November 2019 that the designated monitoring location CNMS-1 at Lohas Park Package 4 (NSR ID R6 in EIA) was available for resident occupation, construction noise monitoring at designated monitoring location CNMS-1 was commenced on 8 November 2019. The noise quality monitoring schedule is presented in Appendix F.

5.1.2 Valid calibration certificates of monitoring equipment is shown in Appendix G and the construction noise monitoring results are summarized in the following sub-sections

5.2 Results of Noise Monitoring

5.2.1 8 sessions of daytime construction noise monitoring were performed at both the designated monitoring location CNMS-1 and the interim alternative location CNMS-5 in the reporting period. The daytime noise monitoring results are summarized in Table 5-1 and Table 5-2. The detailed noise monitoring data are presented in Appendix H and the relevant graphical plots are shown in Appendix I.

Table 5-1 Daytime Construction Noise Impact Monitoring Results at CNMS-1

Date	Time of Starting	Time of Finishing	Measurement Result (dB(A))
Date	Time of Starting	Time of Finishing	L_eq30min	Façade Correction
8-Nov-19	15:13	15:43	65.1	NA
14-Nov-19	18:26	18:56	55.2	NA
20-Nov-19	14:38	15:08	66.5	NA
26-Nov-19	10:30	11:00	64.4	NA

Table 5-2 Daytime Construction Noise Impact Monitoring Results at CNMS-5

Date	Time of Starting	Time of Finishing	Measurement Result (dB(A))
Date	Time of Starting	Time of Finishing	L_eq30min	Façade Correction
8-Nov-19	14:34	15:04	63.7	NA
14-Nov-19	13:55	14:25	65.6	NA
20-Nov-19	13:44	14:14	66.8	NA
26-Nov-19	13:07	13:37	65.0	NA

5.2.2 As shown in Table 5-1 and Table 5-2, all the measured results were below 75dB(A) of the acceptance criteria. No adverse weather condition which may affect the monitoring result was encountered during the course of noise monitoring in the reporting period. Furthermore, no complaint on daytime construction noise was registered, indicating no exceedance of Action Level.

5.2.3 In the reporting period, evening marine work by Contractor of Contract 1 at Portion II was scheduled from 4 – 7, 11 – 16, 18 – 23 and 25 - 30 November 2019. Additional weekly evening construction noise monitoring were performed at both the designated monitoring location CNMS-1 and the interim alternative location CNMS-5 in the reporting period. The evening noise monitoring results at interim alternative location is summarized in Table 5-3 and Table 5-4. The detailed noise monitoring data are presented in Appendix H.

Table 5-3 Evening Construction Noise Impact Monitoring Results at CNMS-1

Date	Time of Starting	Time of Finishing	Measurement Result (dB(A))
Date	Time of Starting	Time of Finishing	L_eq15min	Façade Correction
14-Nov-19	19:04	19:19	52.9	NA
21-Nov-19	19:08	19:23	56.1	NA
27-Nov-19	19:10	19:15	54.3	NA

Table 5-4 Evening Construction Noise Impact Monitoring Results at CNMS-5

Date	Time of Starting	Time of Finishing	Measurement Result (dB(A))
Date	Time of Starting	Time of Finishing	L_eq15min	Façade Correction
6-Nov-19	19:38	19:53	62.9	NA
14-Nov-19	19:27	19:42	59.8	NA
21-Nov-19	19:34	19:49	61.4	NA
27-Nov-19	19:40	19:55	60.8	NA

5.2.4 According to Table 5-3 and Table 5-4, the measured results on 21 November 2019 for CNMS-1, 6, 14, 21 and 27 November 2019 for CNMS-5 were higher than 55dB(a) of the acceptance criteria, Therefore a total of six (6) limit level evening noise monitoring exceedances were recorded in the reporting period and investigations were undertaken by ET accordingly.

5.2.5 For the evening noise monitoring exceedances recorded on 6, 14, 21 and 27 November 2019 at CNMS-5, since the marine work at Junk Bay were ceased before the evening noise monitoring event, it was considered the exceedances recorded on 6, 14, 21 and 27 November 2019 at CNMS-5 were unlikely due to the Project.

5.2.6 For evening noise monitoring exceedances on 21 November 2019 at CNMS-1, investigation were undertaken by ET. Since only one group of powered mechanical equipment stated in the Construction Noise Permit (CNP) GW-RE0886-19 was used during the evening marine work, the monitoring result obtained were within the range of evening noise obtained from baseline monitoring and external noise source such as traffic noise was noted during the course of monitoring, it is considered that the evening noise monitoring exceedances recorded on 21 November 2019 at CNMS-1 was unlikely caused by the Project. Nevertheless, the Contractor was reminded to strictly follow the requirement stipulated in the applied CNP so as to minimise the noise impact to the surrounding noise sensitive receiver.

6. Water Quality Monitoring

6.1 General

6.1.1 The water quality monitoring schedule is presented in Appendix F and the monitoring results are summarized in the following sub-sections.

6.1.2 Valid calibration certificates of monitoring equipment and the laboratory accredited certificate is shown in Appendix G. The water quality monitoring results are summarized in the following sub-sections.

6.2 Results of Water quality Monitoring

6.2.1 In this Reporting Period, a total of 13 sampling days were performed for marine water monitoring at the nine designated locations. Monitoring results of 3 key parameters: dissolved oxygen (DO), turbidity and suspended solids are summarized in Tables 6-1 to 6-4.

Table 6-1 Results Summary of Depth Average (Surface & Middle Layer) of DO (mg/L)

Tidal	Sampling date	CC1	CC2	CC3	CC4	CC13	SWI1	C3	C4	I1
Mid-Ebb	1-Nov-19	6.4	6.3	6.3	6.2	6.3	6.3	6.4	6.4	6.3
	4-Nov-19	6.8	6.7	6.6	6.6	6.9	6.8	6.7	6.7	6.7
	6-Nov-19	6.9	6.9	6.4	6.8	6.8	6.2	6.7	6.8	6.6
	8-Nov-19	7.3	7.4	7.0	7.2	7.4	6.9	6.9	7.1	7.1
	11-Nov-19	8.2	8.1	8.4	7.8	8.0	8.6	7.5	7.4	8.0
	14-Nov-19	7.2	7.5	8.0	7.6	7.7	7.4	7.2	7.9	7.5
	16-Nov-19	7.3	7.1	7.3	7.2	7.3	7.6	7.4	7.3	7.2
	18/11/2019	7.2	7.5	7.3	7.2	7.5	7.4	7.4	7.2	7.6
	20-Nov-19	6.8	6.6	6.5	6.5	6.6	6.2	6.6	6.7	6.5
	22-Nov-19	6.8	6.8	6.2	6.7	6.6	6.2	6.4	6.4	6.4
	25-Nov-19	6.7	6.6	6.6	6.6	6.7	6.1	6.2	6.2	6.6
	27-Nov-19	6.6	6.4	6.4	6.5	6.5	6.4	6.4	6.7	6.3
	29-Nov-19	6.8	6.7	6.6	6.6	6.8	6.6	6.8	6.8	6.6
Mid-Flood	1-Nov-19	6.5	6.3	6.3	6.3	6.3	6.4	6.4	6.3	6.3
	4-Nov-19	6.9	6.8	6.6	6.7	6.8	6.7	6.7	6.8	6.6
	6-Nov-19	7.0	6.9	6.6	7.2	6.9	6.6	6.8	6.8	6.6
	8-Nov-19	7.5	7.6	7.0	7.5	7.5	7.5	7.1	7.2	7.1
	11-Nov-19	8.6	8.2	8.8	8.1	8.6	8.7	7.5	7.5	7.9
	14-Nov-19	7.5	7.4	8.0	7.4	7.9	7.3	7.1	8.0	7.8
	16-Nov-19	7.4	7.4	7.4	7.2	7.3	7.3	7.5	7.3	7.4
	18/11/2019	7.4	7.3	7.2	7.1	7.3	7.3	7.2	7.1	7.4
	20-Nov-19	6.8	6.6	6.5	6.6	6.5	6.3	6.4	6.6	6.5
	22-Nov-19	6.7	6.9	6.5	6.7	6.7	6.5	6.7	6.4	6.5
	25-Nov-19	6.6	6.6	6.6	6.5	6.6	6.1	6.1	6.2	6.5
	27-Nov-19	6.6	6.6	6.4	6.7	6.6	6.7	6.5	6.4	6.4
	29-Nov-19	6.8	6.6	6.5	6.7	6.7	6.7	6.8	6.8	6.6

Table 6-2 Results Summary of Bottom Depth of DO (mg/L)

Tidal	Sampling date	CC1	CC2	CC3	CC4	CC13	SWI1	C3	C4	I1
Mid-Ebb	1-Nov-19	6.3	6.2	6.2	NA	6.2	6.2	6.3	6.4	6.1
	4-Nov-19	6.7	6.4	6.5	NA	6.7	6.6	6.5	6.6	6.4
	6-Nov-19	6.9	6.8	6.4	NA	6.9	6.1	6.6	6.7	6.6
	8-Nov-19	7.2	7.0	6.7	NA	7.4	7.1	6.9	7.1	7.0
	11-Nov-19	7.3	7.1	7.0	NA	7.7	8.5	7.2	7.2	7.1
	14-Nov-19	6.9	7.0	7.5	NA	7.1	7.4	7.2	7.0	7.0
	16-Nov-19	7.1	6.8	6.5	NA	7.2	7.6	7.2	7.1	6.6
	18/11/2019	7.0	6.7	7.0	NA	6.7	7.4	7.1	7.0	6.6
	20-Nov-19	6.7	6.5	6.3	NA	6.6	6.2	6.3	6.4	6.3
	22-Nov-19	6.8	6.4	6.2	NA	6.6	5.8	6.4	6.3	6.4
	25-Nov-19	6.6	6.2	5.5	NA	6.5	6.0	6.1	6.2	6.3
	27-Nov-19	6.6	6.4	6.1	NA	6.4	6.6	6.3	6.6	6.3
	29-Nov-19	6.7	6.6	6.0	NA	6.6	6.6	6.7	6.7	6.3
Mid-Flood	1-Nov-19	6.4	6.0	6.1	NA	6.1	6.2	6.3	6.3	6.1
	4-Nov-19	6.6	6.5	6.5	NA	6.4	6.6	6.6	6.6	6.3
	6-Nov-19	7.0	6.9	6.4	NA	7.0	6.5	6.7	6.7	6.7
	8-Nov-19	7.4	7.0	6.9	NA	7.4	7.1	6.9	7.1	7.1
	11-Nov-19	7.4	7.5	7.5	NA	8.6	8.9	6.9	7.3	7.0
	14-Nov-19	7.0	7.0	7.1	NA	7.3	7.4	7.1	7.2	7.0
	16-Nov-19	7.2	7.1	6.5	NA	7.1	7.3	7.2	7.1	6.4
	18/11/2019	7.3	7.3	6.0	NA	7.3	7.4	6.9	6.9	6.5
	20-Nov-19	6.6	6.5	6.1	NA	6.5	5.9	6.3	6.4	6.3
	22-Nov-19	6.7	6.4	6.3	NA	6.6	6.2	6.5	6.3	6.5
	25-Nov-19	6.5	6.5	5.4	NA	6.5	5.9	6.1	6.1	6.3
	27-Nov-19	6.5	6.5	5.6	NA	6.6	6.2	6.3	6.4	6.4
	29-Nov-19	6.7	6.4	6.3	NA	6.5	6.7	6.6	6.7	6.3

Remark: No Dissolved Oxygen (Bottom) monitoring data available for CC4 due to the water depth measured at CC4 during the monitoring days were less than 3 meters.

Italic and bold value indicated Action Level exceedance

Underlined and bold value indicated Limit Level exceedance

Table 6-3 Results Summary of Depth Average of Turbidity (NTU)

Tidal	Sampling date	CC1	CC2	CC3	CC4	CC13	SWI1	C3	C4	I1
Mid-Ebb	1-Nov-19	1.6	2.3	1.3	2.5	2.1	1.8	2.0	1.8	1.8
	4-Nov-19	1.2	2.0	1.4	1.0	1.4	1.9	1.5	1.3	1.9
	6-Nov-19	0.7	1.0	1.5	1.0	1.1	1.9	1.2	0.8	1.6
	8-Nov-19	0.6	0.9	1.3	1.0	0.5	1.9	1.4	0.6	1.5
	11-Nov-19	1.2	1.4	1.0	1.9	1.2	0.9	1.4	1.5	1.4
	14-Nov-19	2.0	1.8	0.8	1.1	1.2	1.5	1.1	1.7	2.5
	16-Nov-19	2.2	3.0	1.5	1.2	1.0	1.1	1.4	2.0	2.1
	18/11/2019	1.1	1.8	1.6	1.6	1.3	0.9	0.9	2.1	0.8
	20-Nov-19	0.9	1.3	2.1	2.2	1.3	3.0	3.1	1.6	2.3
	22-Nov-19	1.2	1.6	1.9	1.5	2.0	1.7	1.7	1.5	2.8
	25-Nov-19	1.1	1.5	1.7	2.2	1.1	2.0	1.8	2.1	1.6
	27-Nov-19	1.6	2.1	1.9	2.9	1.8	1.5	2.5	1.7	3.0
	29-Nov-19	2.3	2.5	2.8	2.8	2.3	2.6	2.1	2.0	3.1
Mid-Flood	1-Nov-19	1.6	1.9	1.4	1.4	1.8	1.7	1.8	1.6	1.6
	4-Nov-19	1.3	1.8	1.6	1.1	1.7	1.8	1.5	1.3	2.2
	6-Nov-19	0.8	1.0	1.3	0.9	0.7	1.7	1.4	0.8	1.4
	8-Nov-19	0.6	1.0	1.3	1.2	0.7	1.6	0.8	0.7	1.2
	11-Nov-19	0.9	1.3	1.2	1.2	0.8	0.8	1.2	1.6	1.5
	14-Nov-19	1.3	1.7	1.1	2.2	1.1	1.3	1.5	1.4	2.0
	16-Nov-19	1.1	1.6	1.3	1.2	1.3	1.2	1.1	1.6	2.1
	18/11/2019	0.7	0.7	1.5	2.2	0.7	0.4	1.4	1.4	1.2
	20-Nov-19	1.3	1.5	2.7	1.1	1.4	3.5	3.0	2.5	2.2
	22-Nov-19	1.2	2.7	2.1	1.8	1.4	1.5	2.9	1.7	2.0
	25-Nov-19	1.1	1.1	2.1	1.8	1.1	2.9	2.0	2.5	2.6
	27-Nov-19	1.8	1.8	2.3	1.8	1.7	2.4	2.7	2.3	2.1
	29-Nov-19	1.9	2.7	2.4	2.9	2.0	2.5	2.5	2.0	3.1

Table 6-4 Results Summary of Depth Average of Suspended Solids (mg/L)

Tidal	Sampling date	CC1	CC2	CC3	CC4	CC13	SWI1	C3	C4	I1
Mid-Ebb	1-Nov-19	3.1	3.6	2.3	1.8	3.2	3.3	2.9	2.9	2.2
	4-Nov-19	3.2	3.7	1.3	2.2	3.2	3.4	2.4	2.6	3.1
	6-Nov-19	3.5	3.0	3.3	3.0	3.0	7.5	2.8	2.9	3.7
	8-Nov-19	3.4	3.3	4.6	3.1	3.5	7.3	6.8	4.4	3.3
	11-Nov-19	4.2	3.8	2.5	4.5	3.2	3.6	4.3	4.8	6.4
	14-Nov-19	6.0	6.3	5.6	4.8	3.1	5.1	3.5	3.4	3.2
	16-Nov-19	5.0	8.8	6.9	4.3	12.3	7.3	6.5	8.5	7.3
	18/11/2019	4.6	6.4	4.3	3.9	4.9	4.1	4.5	5.7	5.0
	20-Nov-19	5.5	5.5	4.8	6.2	5.8	12.8	5.5	4.9	7.5
	22-Nov-19	2.9	2.2	2.2	3.9	1.7	2.8	2.9	2.2	2.3
	25-Nov-19	2.6	3.4	2.2	4.5	3.3	5.8	3.2	2.7	2.3
	27-Nov-19	2.9	2.6	2.4	4.1	4.2	2.9	4.5	2.6	3.8
	29-Nov-19	6.1	5.7	6.0	11.7	3.5	7.9	4.6	3.9	5.3
Mid-Flood	1-Nov-19	2.9	3.3	2.9	1.7	2.5	2.3	3.8	3.3	3.5
	4-Nov-19	2.8	2.8	1.0	1.7	2.9	3.8	2.0	1.7	2.9
	6-Nov-19	2.4	2.5	2.4	1.7	2.5	4.2	1.6	3.2	4.7
	8-Nov-19	1.8	2.5	3.6	3.2	1.0	1.7	1.2	2.0	2.9
	11-Nov-19	3.4	3.2	4.1	3.9	3.5	4.6	4.1	4.4	3.5
	14-Nov-19	3.3	5.7	4.2	6.5	4.8	5.0	5.1	3.3	4.2
	16-Nov-19	4.1	4.5	*8.6*	4.6	5.7	4.7	6.5	5.9	6.2
	18/11/2019	7.7	8.0	4.5	4.4	7.2	7.9	5.0	3.6	5.8
	20-Nov-19	5.9	7.7	8.4	6.7	5.4	11.5	5.7	7.5	5.9
	22-Nov-19	2.3	2.1	1.8	2.9	2.7	3.0	2.7	2.6	2.4
	25-Nov-19	3.0	2.8	1.5	6.9	2.6	6.6	3.6	3.0	2.9
	27-Nov-19	3.3	2.8	2.0	3.9	4.6	3.8	3.7	4.8	2.3
	29-Nov-19	4.9	4.4	4.6	3.4	4.4	6.2	8.8	7.8	6.7

Remark: Italic and bold value indicated Action Level exceedance

Underlined and bold value indicated Limit Level exceedance

Table 6-5 Results Summary of Depth Average of Temperature (°C)

Tidal	Sampling date	CC1	CC2	CC3	CC4	CC13	SWI1	C3	C4	I1
Mid-Ebb	1-Nov-19	25.6	25.6	25.8	25.6	25.6	25.7	25.6	25.6	25.6
	4-Nov-19	25.4	25.5	25.6	25.6	25.4	25.5	25.4	25.3	25.4
	6-Nov-19	25.0	25.0	25.2	25.1	25.0	25.1	25.1	25.1	25.0
	8-Nov-19	24.8	24.7	24.8	24.7	24.7	24.7	24.7	24.7	24.8
	11-Nov-19	24.5	24.3	24.4	24.4	24.4	24.6	24.3	24.3	24.4
	14-Nov-19	23.8	23.9	24.0	24.0	23.8	24.0	23.8	23.9	23.9
	16-Nov-19	23.7	23.7	23.7	23.8	23.8	23.9	23.7	23.6	23.7
	18/11/2019	23.8	24.0	24.2	24.1	24.0	24.2	23.9	23.9	24.2
	20-Nov-19	23.6	23.4	23.5	23.5	23.4	23.4	23.4	23.4	23.4
	22-Nov-19	23.4	23.3	23.5	23.5	23.4	23.6	23.2	23.3	23.3
	25-Nov-19	23.6	23.4	23.5	23.5	23.5	23.3	23.3	23.3	23.5
	27-Nov-19	23.1	23.0	23.1	22.9	23.0	23.1	22.9	23.0	23.0
	29-Nov-19	22.5	22.5	22.5	22.6	22.7	22.6	22.5	22.5	22.6
Mid-Flood	1-Nov-19	25.7	25.6	25.6	25.7	25.6	25.7	25.6	25.6	25.6
	4-Nov-19	25.5	25.4	25.7	25.6	25.4	25.5	25.4	25.3	25.4
	6-Nov-19	25.1	25.1	25.1	25.3	25.1	25.2	25.1	25.1	25.2
	8-Nov-19	24.8	24.7	24.8	24.9	24.8	24.8	24.7	24.7	24.8
	11-Nov-19	24.7	24.4	24.4	24.4	24.6	24.5	24.3	24.4	24.4
	14-Nov-19	23.8	23.8	24.0	23.9	23.9	24.0	23.8	23.9	23.9
	16-Nov-19	23.8	23.8	23.8	23.8	23.7	23.9	23.7	23.7	23.8
	18/11/2019	24.0	23.9	24.1	24.2	24.0	24.2	23.8	23.7	24.0
	20-Nov-19	23.5	23.4	23.4	23.5	23.4	23.4	23.4	23.4	23.4
	22-Nov-19	23.4	23.4	23.5	23.4	23.4	23.6	23.3	23.3	23.4
	25-Nov-19	23.5	23.4	23.5	23.3	23.4	23.3	23.3	23.2	23.4
	27-Nov-19	23.2	23.0	23.1	23.0	23.1	23.1	23.0	23.0	23.2
	29-Nov-19	22.5	22.5	22.5	22.6	22.6	22.6	22.5	22.5	22.5

Table 6-6 Results Summary of Depth Average of Salinity (ppt)

Tidal	Sampling date	CC1	CC2	CC3	CC4	CC13	SWI1	C3	C4	I1
Mid-Ebb	1-Nov-19	35.0	34.9	34.8	34.9	34.8	34.8	35.0	35.0	34.7
	4-Nov-19	35.0	35.1	35.0	34.9	35.0	35.1	35.0	35.1	35.0
	6-Nov-19	35.1	35.1	34.9	35.2	35.1	35.1	35.1	35.1	35.0
	8-Nov-19	35.2	35.2	35.1	35.2	35.1	35.1	35.1	35.1	35.1
	11-Nov-19	35.2	35.2	35.1	35.2	35.1	35.2	35.2	35.2	35.1
	14-Nov-19	35.3	35.2	35.1	35.1	35.1	35.2	35.2	35.2	35.1
	16-Nov-19	35.2	35.2	35.1	35.1	35.2	35.1	35.3	35.3	35.2
	18/11/2019	35.2	35.1	35.1	35.1	35.1	35.0	35.1	35.2	35.1
	20-Nov-19	35.3	35.3	35.3	35.3	35.3	35.4	35.4	35.4	35.3
	22-Nov-19	35.4	35.5	35.4	35.3	35.4	35.4	35.4	35.3	35.4
	25-Nov-19	35.3	35.4	35.3	35.4	35.3	35.3	35.3	35.3	35.4
	27-Nov-19	35.4	35.4	35.3	35.4	35.4	35.3	35.4	35.4	35.4
	29-Nov-19	35.5	35.4	35.3	35.4	35.4	35.4	35.4	35.4	35.3
Mid-Flood	1-Nov-19	34.8	34.8	34.8	34.8	34.8	34.7	34.9	34.9	34.8
	4-Nov-19	35.0	35.0	35.0	34.9	35.0	35.0	35.0	35.1	35.0
	6-Nov-19	35.1	35.0	35.0	35.1	35.0	35.1	35.1	35.1	35.0
	8-Nov-19	35.2	35.1	35.1	35.2	35.1	35.1	35.1	35.1	35.1
	11-Nov-19	35.1	35.1	35.1	35.2	35.0	35.1	35.2	35.1	35.1
	14-Nov-19	35.3	35.2	35.1	35.1	35.1	35.1	35.2	35.2	35.1
	16-Nov-19	35.2	35.2	35.1	35.1	35.2	35.1	35.3	35.3	35.2
	18/11/2019	35.1	35.1	35.0	35.0	35.0	34.9	35.2	35.3	35.1
	20-Nov-19	35.3	35.3	35.3	35.3	35.3	35.4	35.4	35.4	35.3
	22-Nov-19	35.4	35.4	35.3	35.3	35.4	35.4	35.4	35.3	35.4
	25-Nov-19	35.3	35.3	35.4	35.4	35.3	35.4	35.3	35.4	35.4
	27-Nov-19	35.3	35.4	35.3	35.4	35.4	35.3	35.4	35.4	35.3
	29-Nov-19	35.4	35.4	35.3	35.4	35.4	35.4	35.4	35.4	35.3

Table 6-7 Results Summary of Depth Average of pH

Tidal	Sampling date	CC1	CC2	CC3	CC4	CC13	SWI1	C3	C4	I1
Mid-Ebb	1-Nov-19	8.22	8.22	8.21	8.24	8.21	8.23	8.22	8.23	8.21
	4-Nov-19	8.23	8.23	8.23	8.24	8.21	8.18	8.22	8.23	8.22
	6-Nov-19	8.26	8.27	8.23	8.26	8.26	8.24	8.25	8.26	8.25
	8-Nov-19	8.29	8.30	8.28	8.27	8.30	8.18	8.27	8.27	8.28
	11-Nov-19	8.32	8.33	8.30	8.30	8.33	8.35	8.28	8.27	8.32
	14-Nov-19	8.28	8.30	8.31	8.28	8.30	8.22	8.27	8.29	8.29
	16-Nov-19	8.28	8.28	8.27	8.30	8.28	8.34	8.29	8.28	8.27
	18/11/2019	8.25	8.27	8.25	8.19	8.26	8.09	8.24	8.21	8.27
	20-Nov-19	8.31	8.31	8.29	8.29	8.31	8.25	8.31	8.31	8.30
	22-Nov-19	8.31	8.31	8.27	8.29	8.30	8.20	8.28	8.28	8.29
	25-Nov-19	8.26	8.27	8.27	8.26	8.27	8.25	8.24	8.24	8.27
	27-Nov-19	8.26	8.26	8.25	8.36	8.28	8.17	8.28	8.29	8.25
	29-Nov-19	8.31	8.30	8.29	8.30	8.30	8.29	8.31	8.31	8.31
Mid-Flood	1-Nov-19	8.21	8.21	8.21	8.20	8.21	8.17	8.22	8.20	8.21
	4-Nov-19	8.25	8.24	8.23	8.25	8.25	8.23	8.24	8.24	8.24
	6-Nov-19	8.24	8.25	8.22	8.23	8.24	8.06	8.23	8.23	8.24
	8-Nov-19	8.31	8.31	8.28	8.30	8.30	8.19	8.29	8.29	8.29
	11-Nov-19	8.34	8.35	8.36	8.34	8.35	8.32	8.30	8.30	8.32
	14-Nov-19	8.28	8.30	8.30	8.29	8.31	8.26	8.28	8.31	8.31
	16-Nov-19	8.29	8.29	8.28	8.30	8.28	8.29	8.30	8.29	8.28
	18/11/2019	8.27	8.27	8.25	8.25	8.27	8.26	8.26	8.26	8.27
	20-Nov-19	8.31	8.30	8.29	8.30	8.30	8.30	8.30	8.31	8.29
	22-Nov-19	8.30	8.31	8.28	8.33	8.30	8.28	8.31	8.29	8.30
	25-Nov-19	8.25	8.27	8.26	8.27	8.27	8.26	8.23	8.24	8.26
	27-Nov-19	8.28	8.28	8.27	8.30	8.27	8.36	8.29	8.30	8.28
	29-Nov-19	8.30	8.30	8.28	8.31	8.30	8.16	8.30	8.34	8.29

6.2.2 The monitoring results including in-situ measurements and laboratory testing results are provided in Appendix H. The graphical plots are shown in Appendix I.

6.2.3 A summary of exceedances for the four parameters: dissolved oxygen (DO), turbidity and suspended solids (SS) are shown in Table 6-8.

Table 6-8 Summary of Water Quality Exceedance

Station	DO (Ave of Top & mid-depth)		DO (Bottom Depth)		Turbidity (Depth Ave)		SS (Depth Ave)		Total Exceedance for the Station
Station	AL	LL	AL	LL	AL	LL	AL	LL	AL	LL
CC1	0	0	0	0	0	0	0	0	0	0
CC2	0	0	0	0	0	0	0	0	0	0
CC3	0	0	0	0	0	0	1	0	1	0
CC4	0	0	NA	NA	0	0	0	0	0	0
CC13	0	0	0	0	0	0	0	1	0	1
SWI1	0	0	0	0	0	0	0	2	0	2
No of Exceedance	0	0	0	0	0	0	1	3	1	3

6.2.4 In this Reporting Period, one (1) Action Level and three (3) Limit Level exceedances of Suspended Solid were recorded.

6.2.5 Upon confirmation of the monitoring result, Notification of Exceedances (NOEs) have been issued to relevant parties. Investigation for the cause of exceedance was carried out by ET subsequently.

6.2.6 For SS exceedance recorded on 16 and 20 November 2019, investigation were undertaken by ET. Since silt curtains as water quality mitigation measure were properly implemented, no abnormal and turbid discharge made from the construction site was observed during the course of marine water sampling, it is considered that the exceedances of suspended solid recorded in this period were unlikely caused by the Project. Nevertheless, the Contractor was reminded to check the implementation of silt curtain regularly to ensure no seepage of muddy water into the marine water body.

7. Waste Management

7.1 General Waste Management

7.1.1 Waste management would be carried out by an on-site Environmental Officer or an Environmental Consultant from time to time.

7.2 Records of Waste Quantities

7.2.1 All types of waste arising from the construction work are classified into the following:

l Construction & Demolition (C&D) Material;

l Chemical Waste; and

l General Refuse

7.2.2 According to the information provided by Contractor of Contract 1 and Contract 2, waste disposal was made in the Reporting period are summarized in Tables 7-1 and 7-2.

Table 7-1 Summary of Quantities of Inert C&D Materials

Type of Waste	Contract 1		Contract 2
Type of Waste	Quantity	Disposal Location	Quantity	Disposal Location
Total C&D Materials (Inert) (‘000m³)	0.744	-	2.351	-
Reused in this Contract (Inert) (‘000m³)	0	-	0	-
Reused in other Projects (Inert) (‘000m³)	0	-	0	-
Disposal as Public Fill (Inert) (‘000m³)	0.744	TKO 137	2.351	TKO 137
Imported Fill (‘000m³)	0	-	0	-

Table 7-2 Summary of Quantities of C&D Wastes

Type of Waste	Contract 1		Contract 2
Type of Waste	Quantity	Disposal Location	Quantity	Disposal Location
Recycled Metal (‘000kg)	0	-	8.87	Collected by recycling company
Recycled Paper / Cardboard Packing (‘000kg)	0.092	Collected by paper recycling company	0	-
Recycled Plastic (‘000kg)	0	-	0	-
Chemical Wastes (‘000kg)	0	-	0	-
General Refuses (‘000m³)	0.075	NENT	0.004	NENT

7.2.3 The Monthly Summary Waste Flow Table of the Contracts 1 and Contract 2 are shown in Appendix K.

8. Site Inspection

8.1 Requirements

8.1.1 According to the approved EM&A Manual, the environmental site inspection shall be formulation by ET Leader. Weekly environmental site inspections should carry out to confirm the environmental performance.

8.2 Findings / Deficiencies During the Reporting Month

Contract 1

8.2.1 In this Reporting Month, weekly joint site inspection to evaluate site environmental performance for the Contract 1 was carried out by the Project Consultant, ET and the Contractor on 6, 13, 20 & 27 November 2019. Moreover, the Independent Environmental Checker (IEC) perform monthly site inspection was on 13 November 2019.

8.2.2 The findings / deficiencies of Contract 1 that observed during the weekly site inspection are listed in Table 8-1 and the site layout plan was provided in Appendix A.

Table 8-1 Site Observations of the Contract 1 (Contract No. NE/2017/07)

Date	Findings / Deficiencies	Follow-Up Status
31 October 2019	Observation: • Drip tray should be provided for chemical storage on-site. (Portion II – Derrick Barge) • Sediment cumulated beside the WepSep should be cleaned. (Portion II – Flat Top Barge) • Muddy water and oil stain spillage on the pilling platform should be cleaned to prevent overflow into the water body. (Portion II – Pilling Platform)	• The chemical containers were removed from site. (Rectified on 31 October 2019) • Sediment cumulated beside the WepSep was cleaned. (Rectified on 31 October 2019) • Muddy water and oil stain spillage on the pilling platform was cleaned to prevent overflow into the water body. (Rectified on 1 November 2019)
6 November 2019	Observation: Colourless NRMM label should be replaced. (Portion II – Generator in Derrick Barge)	• Colourless NRMM label was replaced. (Rectified on 7 November 2019)
13 November 2019	Observation: • Stagnant water cumulated inside the drip tray should be cleaned. (Portion II – Derrick Barge & Portion V) • Oil stain on the deck should be cleaned. (Portion II – Derrick Barge)	• Stagnant water cumulated inside the drip tray was cleaned. (Rectified on 14 November 2019) Oil stain on the deck was cleaned. (Rectified on 14 November 2019)
20 November 2019	Observation: • Loose materials cumulated near the barging point should be cleaned. (Works Area A) • Silt-curtain should be sealed properly. (Portion II – Pilling Platform)	• Loose material cumulated near the barging point was cleaned. (Rectified on 23 November 2019) • Silt-curtain was sealed properly. (Rectified on 23 November 2019)
27 November 2019	Observation: • Stock pile storage on-site should be covered to reduce dust impact. (Works Area A) • Drip tray should be provided for chemical storage on-site. (Portion II – Pre-casted Shell) • Improper color of the NRMM label should be replaced. (Portion II)	• Stockpile storage on-site was covered to reduce dust impact. (Rectified on 27 November 2019) • Chemical storage on-site was removed. (Rectified on 27 November 2019) • Improper color of the NRMM label was replaced. (Rectified on 27 November 2019)

Date

Findings / Deficiencies

Follow-Up Status

31 October 2019

Observation:

• Drip tray should be provided for chemical storage on-site. (Portion II – Derrick Barge)

• Sediment cumulated beside the WepSep should be cleaned. (Portion II – Flat Top Barge)

• Muddy water and oil stain spillage on the pilling platform should be cleaned to prevent overflow into the water body. (Portion II – Pilling Platform)

• The chemical containers were removed from site. (Rectified on 31 October 2019)

• Sediment cumulated beside the WepSep was cleaned. (Rectified on 31 October 2019)

• Muddy water and oil stain spillage on the pilling platform was cleaned to prevent overflow into the water body. (Rectified on 1 November 2019)

6 November 2019

Observation:

Colourless NRMM label should be replaced. (Portion II – Generator in Derrick Barge)

• Colourless NRMM label was replaced. (Rectified on 7 November 2019)

13 November 2019

Observation:

• Stagnant water cumulated inside the drip tray should be cleaned. (Portion II – Derrick Barge & Portion V)

• Oil stain on the deck should be cleaned. (Portion II – Derrick Barge)

• Stagnant water cumulated inside the drip tray was cleaned. (Rectified on 14 November 2019)

Oil stain on the deck was cleaned. (Rectified on 14 November 2019)

20 November 2019

Observation:

• Loose materials cumulated near the barging point should be cleaned. (Works Area A)

• Silt-curtain should be sealed properly. (Portion II – Pilling Platform)

• Loose material cumulated near the barging point was cleaned. (Rectified on 23 November 2019)

• Silt-curtain was sealed properly. (Rectified on 23 November 2019)

27 November 2019

Observation:

• Stock pile storage on-site should be covered to reduce dust impact. (Works Area A)

• Drip tray should be provided for chemical storage on-site. (Portion II – Pre-casted Shell)

• Improper color of the NRMM label should be replaced. (Portion II)

• Stockpile storage on-site was covered to reduce dust impact. (Rectified on 27 November 2019)

• Chemical storage on-site was removed. (Rectified on 27 November 2019)

• Improper color of the NRMM label was replaced. (Rectified on 27 November 2019)

Contract 2

8.2.3 In this Reporting Month, weekly joint site inspection to evaluate site environmental performance for the Contract 2 were carried out by the Project Consultant, ET and the Contractor on 2, 9, 16, 23 & 31 October 2019. Moreover, the Independent Environmental Checker (IEC) perform monthly site inspection was on 9 October 2019.

8.2.4 The findings / deficiencies of Contract 2 that observed during the weekly site inspection are listed in Table 8-2 and the site layout plan was provided in Appendix A.

Table 8-2 Site Observations of the Contract 2 (Contract No. NE/2017/08)

Date

Findings / Deficiencies

Follow-Up Status

31 October 2019

Observation:

• Stagnant water cumulated inside the drip tray should be cleaned. (Portion VI)

• Proper maintenance should be provided for the wheel washing and water spraying system to make sure the system is functional. (Portion VI)

• Sediment cumulated around the generator should be cleaned. (Portion VI)

• Water spraying should be covered at all exposed area to reduce dust impact. (Portion III)

• Stagnant water was removed. (Rectified on 4 November 2019)

• Water spraying system was maintained in good condition. (Rectified on 4 November 2019)

• Sediment cumulated around the generator was removed. (Rectified on 4 November 2019)

• Water spraying was provided to exposed area. (Rectified on 4 November 2019)

6 November 2019

Observation:

• Proper dust mitigation measure should be provided for excavation works to reduce dust impact. (Portion VI)

• Water spraying was provided to excavation works. (Rectified on 7 November 2019)

13 November 2019

Observation:

• Water spraying should be covered at all site haul road and exposed area to reduce dust impact. (Portion VI)

• Housekeeping should be improved. General refuse scattered on-site should be cleaned. (Portion VI)

• Proper dust mitigation measures should be provided for dusty stockpile storage on-site. (Portion VI)

• Stagnant water and mud cumulated inside the drip tray should be cleaned. (Portion VI)

• Temporary drainage system should be implemented properly to drain off the excess water accmulated on-site. (Portion VI)

• Water spraying was provided to exposed area to reduce dust impact. (Rectified on 18 November 2019)

• General refuse was removed from site. (Rectified on 18 November 2019)

• Stockpile was removed. (Rectified on 18 November 2019)

• Stagnant water cumulated inside drip tray was removed. (Rectified on 18 November 2019)

• Wastewater from PBSH was direct to the sedimentation tank for further treatment. (Rectified on 18 November 2019)

20 November 2019

Observation:

• Housekeeping should be improved. General refuse scattered on-site should be cleaned. (Portion VI)

• Stagnant water cumulated inside the drip tray should be cleaned. (Portion VI)

• General refuse were removed from site. (Rectified on 25 November 2019)

• Stagnant water inside drip tray was removed. (Rectified on 25 November 2019)

27 November 2019

Observation:

• C&D materials cummulated inside the temporary drainage should be cleaned. (Portion VI)

• C&D material cumulated inside the temporary drainage was removed. (Rectified on 29 November 2019)

8.3 Implementation Status of Surface Runoff Mitigation Measures During the Reporting Month

8.3.1 During the inspection of the reporting month, implementation of surface runoff mitigation measures were observed in both Contracts. The surface runoff mitigation measures observed during the weekly site inspection of Contract 1 and Contract 2 are summarized below and the photo recorded was provided in Appendix L.

Contract 1 (Contract No. NE/2017/07)

8.3.2 The surface runoff mitigation measures of Contract 1 implemented in this Reporting Period are:-

Ÿ Waste skip was provided to storage the concrete washing water during concreting work.

Ÿ Exposed area had been shotcrete to prevent the generation of muddy water.

Ÿ Silt-curtain had been provided to prevent muddy water overflow from the piling platform.

Contract 2 (Contract No. NE/2017/08)

8.3.3 The surface runoff mitigation measures of Contract 2 implemented in this Reporting Period are:-

Ÿ Exposed area had been covered to prevent generation of muddy surface run-off during rainstorm.

Ÿ Treatment facilities was installed at site to treat the site generated water prior discharge.

Ÿ Gap between the concrete block and the sea front was sealed up.

Ÿ Trench had been provided to divert the surface runoff to the de-silting facilities.

8.3.4 Overall, the surface runoff mitigation measures of Contract 1 and Contract 2 observed during the inspection of the reporting period are efficient.

9. Landfill Gas Monitoring

9.1 General Requirement

9.1.1 Pursuant to Section 13 of the Project’s EM&A Manual, landfill gas monitoring shall perform during excavation work within the 250m Consultation Zone of Tseung Kwan O Stage II & III Landfill. For landfill gas monitoring requirements, pre entry and routine measurement shall be undertaken in accordance with the Factories and Industrial Undertaking (Confined Spaces) Regulation.

9.1.2 According to Environmental Mitigation Implementation Schedule (EMIS) S14.7.6, portable monitoring equipment can be used to conduct landfill gas monitoring. Moreover, the frequency and areas to be monitored should be set down prior to commencement of the works either by the Safety Officer or by an appropriately qualified person.

9.2 Limit Levels and Event and Action Plan

9.2.1 In event of the trigger levels specified in Table 14.6 of the EIA report being exceeded, a person, such as the Safety Officer, shall be nominated, with deputies, to be responsible for dealing with any emergency which may occur due to LFG. In an emergency situation the nominated person, or his deputies, shall have the necessary authority and shall ensure that the confined space is evacuated and the necessary works implemented for reducing the concentrations of gas. The Limit levels and relevant Action Plans for landfill gas detected in utilities and any on-site areas following construction is listed in Table 9-1.

Table 9-1 Actions in the Event of Landfill Gas Being Detected in Excavations

Parameter	Limit Level	Actions
Methane	>10% LEL (i.e. >0.5% by volume)	Ÿ Post “No Smoking” signs Ÿ Prohibit hot works Ÿ Ventilate to restore methane to <10% LEL
Methane	>20% LEL (i.e. >1% by volume)	Ÿ Stop excavation works Ÿ Evacuate personnel/prohibit entry Ÿ Increase ventilation to restore methane to <10% LEL
Carbon dioxide	>0.5%	Ÿ Ventilate to restore carbon dioxide to <0.5%
Carbon dioxide	>1.5%	Ÿ Stop excavation works Ÿ Evacuate personnel/prohibit entry Ÿ Increase ventilation to restore carbon dioxide to <0.5%
Oxygen	<19%	Ventilation to restore oxygen >19%
Oxygen	<18%	Ÿ Stop excavation works Ÿ Evacuate personnel/prohibit entry Ÿ Increase ventilation to restore oxygen to >19%

9.2.2 In the event of the trigger levels specified in Table 9-1 being exceeded, the Safety Officer shall be responsible for dealing with any emergency which may occur due to landfill gas.

9.3 Landfill Gas Monitoring

9.3.1 In the Reporting Period, landfill gas monitoring was conducted at the zone Wan O Road which excavation work of Contract 2 was carried out. A Crowcon gas detector was used for the landfill gas monitoring and the valid calibration certificate is presented in Appendix G.

9.3.2 There were a total of 26 days monitoring were carried by the Safety Officer or an approved and qualified persons. The results of landfill gas measurement are summarized in Table 9-2. Moreover, database of monitoring result is attached in Appendix H.

Table 9-2 Summary of Landfill Gas Measurement Results

Landfill Gas Parameter	Action Level	Limit Level	Detectable at LMR
Landfill Gas Parameter	Action Level	Limit Level	Min	Max
Methane	>10% LEL (>0.5% v/v)	>20% LEL (>1% v/v)	0.1%	0.1%
Oxygen	<19%	<18%	20.8%	21.0%
Carbon Dioxide	>0.5%	>1.5%	0.1%	0.2%

9.3.3 The measurement results shown that slightly methane concentration was detected, oxygen concentration measured was over 19.0 % and Carbon Dioxide was between 0.1% and 0.2 %. No exceedance was triggered and therefore no corrective action was required accordingly.

10. Environmental Complaint and Non-Compliance

10.1 Environmental Complaint, Summons and Prosecution

10.1.1 In the Reporting Period, no environmental complaint, summons and prosecution under the EM&A Programme was lodged for the project. The statistical summary table of environmental complaint is presented in Tables 10-1, 10-2 and 10-3.

Table 10-1 Statistical Summary of Environmental Complaints

Reporting Period	Contract	Environmental Complaint Statistics
Reporting Period	Contract	Frequency	Cumulative	Complaint Nature
1 – 30 November 2019	1	0	1	NA
1 – 30 November 2019	2	0	0	NA

Table 10-2 Statistical Summary of Environmental Summons

Reporting Period	Contract	Environmental Summons Statistics
Reporting Period	Contract	Frequency	Cumulative	Summons Nature
1 – 30 November 2019	1	0	0	NA
1 – 30 November 2019	2	0	0	NA

Table 10-3 Statistical Summary of Environmental Prosecution

Reporting Period	Contract	Environmental Prosecution Statistics
Reporting Period	Contract	Frequency	Cumulative	Prosecution Nature
1 – 30 November 2019	1	0	0	NA
1 – 30 November 2019	2	0	0	NA

11. Implementation Status of Mitigation Measures

11.1 General Requirements

11.1.1 The environmental mitigation measures that recommended in the Implementation Schedule for Environmental Mitigation Measures (ISEMM) in the approved EM&A Manual covered the issues of dust, noise, water and waste and they are summarized presented in Appendix M.

11.1.2 The Contractors had been implementing the required environmental mitigation measures according to the Environmental Monitoring and Audit Manual subject to the site condition. Environmental mitigation measures generally implemented by the Contractors in this Reporting Month are summarized in Table 11-1 and photo record of water mitigation measure was provided in Appendix L.

Table 11-1 Environmental Mitigation Measures in the Reporting Month

Issues	Environmental Mitigation Measures
Construction Noise	· Regularly to maintain all plants, so only the good condition plants were used on-site ; · If possible, all mobile plants onsite operation has located far from NSRs; · When machines and plants (such as trucks) were not in using, it was switched off; · Wherever possible, plant was prevented oriented directly the nearby NSRs; · Provided quiet powered mechanical equipment to use onsite; · Weekly noise monitoring was conducted to ensure construction noise meet the criteria.
Air Quality	· Stockpile of dusty material was covered entirely with impervious sheeting or sprayed with water so as to maintain the entire surface wet; · The construction plants regularly maintained to avoid the emissions of black smoke; · The construction plants switched off when it not in use; · Water spraying on haul road and dry site area was provided regularly; · Where a vehicle leaving the works site is carrying a load of dusty materials, the load has covered entirely with clean impervious sheeting; and · Before any vehicle leaving the works site, wheel watering has been performed.
Water Quality	· Debris and refuse generated on-site collected daily; · Oils and fuels were stored in designated areas; · The chemical waste storage as sealed area provided; · Site hoarding with sealed foot were provided surrounding the boundary of working site to prevent wastewater or site surface water runoff get into public areas; and · Portable chemical toilets were provided on-site. A licensed contractor was regularly disposal and maintenance of these facilities. · Silt curtain was installed and maintained in accordance with EP condition
Waste and Chemical Management	· Excavated material reused on site as far as possible to minimize off-site disposal. · Scrap metals or abandoned equipment should be recycled if possible; · Waste arising kept to a minimum and be handled, transported and disposed of in a suitable manner; · Disposal of C&D wastes to any designated public filling facility and/or landfill followed a trip ticket system; and · Chemical waste handled in accordance with the Code of Practice on the Packaging, Handling and Storage of Chemical Wastes.
General	Ÿ The site is generally kept tidy and clean. Ÿ Mosquito control is performed to prevent mosquito breeding on site.

11.2 Tentative Construction Activities in the Coming Month

11.2.1 Tentative construction activities to be undertaken in December 2019 should be included:-

Contract 1

Ÿ Piling works at Portion II

Ÿ Welding of steel bracket for precast shell installation at Portion II

Ÿ Fabrication of bottom deck panels, top deck panels and diaphragm panels at Portion II

Ÿ Precast shell fabrication at Portion II

Contract 2

Ÿ Bored-Piling Works (Portion VI & VII & III)

Ÿ Pre-bored Socket H-Pile (Portion VI)

Ÿ Pre-drilling Works (Portion VI)

Ÿ Excavation Work (Portion VI)

Ÿ Sheet Pilling Work (Portion III)

Ÿ Drainage Installation Work (Portion III)

Ÿ Footing construction Work (Portion VI)

11.3 Impact Forecast

11.3.1 Potential environmental impacts arising from the works of the Contracts 1 and Contract 2 include:

· Construction waste

· Air quality

· Construction noise

· Water quality

11.3.2 Environmental mitigation measures will be properly implemented and maintained as per the Mitigation Implementation Schedule in Appendix L to ensure site environmental performance is acceptable.

12. Conclusions and Recommendations

12.1 Conclusions

12.1.1 This is the monthly EM&A report as presented the monitoring results and inspection findings for the reporting period from 1^st to 30^th November 2019.

12.1.2 In the Reporting Period, no daytime construction noise monitoring results that triggered the Limit Level was recorded and no noise complaint (which is an Action Level exceedance) was received by the Project Consultant, EPD and the Contractors. However, five (5) evening additional construction noise monitoring results triggered the Limit Level. Investigation was undertaken by ET and it was considered that the exceedances recorded are unlikely caused by the Project.

12.1.3 In this Reporting Period, no 1-Hour TSP or 24-Hr TSP air quality monitoring exceedance was recorded. No NOE or the associated corrective actions were therefore issued.

12.1.4 For water quality monitoring, one (1) Action Level and three (3) Limit Level exceedances were recorded for Suspended Solid in the reporting period. Investigations were carried out and it was considered that the exceedances recorded are unlikely caused by the Project.

12.1.5 No documented complaint, notification of summons or prosecution were received and recorded for the Project.

12.2 Recommendations

12.2.1 Due to the dry and windy season has begun in Hong Kong, the Contractors were reminded that all the works to undertaking must be fulfill environmental statutory requirement, especially construction dust come from working sites of the Project

12.2.2 In regards to the marine works, special attention should be paid on excavation works for the bridge pier foundations underway in which water quality mitigation measures such as erection of silt curtain should be properly implemented and maintained.




			Job No.: TCS00975/18

			CEDD Contract Agreement No. EDO/04/2018 - Environmental Team for Cross Bay Link, Tseung Kwan O

			Monthly Environmental Monitoring & Auditing Report of the Project – November 2019
			Prepared For
			Civil Engineering and Development Department (CEDD)

Version	Date	Remarks
1	9 December 2019	First Submission
2	12 December 2019	Amended against IEC’s comments
3	13 December 2019	Amended against IEC’s comments

Issues	Environmental Monitoring Parameters / Inspection		Sessions
Air Quality	1-Hour TSP		15
	24-Hr TSP		6
Construction Noise	Leq (30min) Daytime		8
	Leq (15min) Evening		7
Water Quality	Marine Water Sampling^{(Note 1)}		13
Inspection / Audit	Contract 1	ET Regular Environmental Site Inspection	4
		Joint site audit with Project Consultant and IEC	1
	Contract 2	ET Regular Environmental Site Inspection	4
		Joint site audit with Project Consultant and IEC	1