This document is issued for the party which commissioned it and for specific purposes connected with the above-captioned project only. It should not be relied upon by any other party or used for any other purpose. We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other parties. This document contains confidential information and proprietary intellectual property. It should not be shown to other parties without consent from us and from the party which commissioned it.
This report has been prepared solely for use by the party which commissioned it (the ‘Client’) in connection with the captioned project. It should not be used for any other purpose. No person other than the Client or any party who has expressly agreed terms of reliance with us (the ‘Recipient(s)’) may rely on the content, information or any views expressed in the report. We accept no duty of care, responsibility or liability to any other recipient of this document. This report is confidential and contains proprietary intellectual property. No representation, warranty or undertaking, express or implied, is made and no responsibility or liability is accepted by us to any party other than the Client or any Recipient(s), as to the accuracy or completeness of the information contained in this report. For the avoidance of doubt this report does not in any way purport to include any legal, insurance or financial advice or opinion. We disclaim all and any liability whether arising in tort or contract or otherwise which it might otherwise have to any party other than the Client or the Recipient(s), in respect of this report, or any information attributed to it. We accept no responsibility for any error or omission in the report which is due to an error or omission in data, information or statements supplied to us by other parties including the client (‘Data’). We have not independently verified such Data and have assumed it to be accurate, complete, reliable and current as of the date of such information. Forecasts presented in this document were prepared using Data and the report is dependent or based on Data. Inevitably, some of the assumptions used to develop the forecasts will not be realised and unanticipated events and circumstances may occur. Consequently Mott MacDonald does not guarantee or warrant the conclusions contained in the report as there are likely to be differences between the forecasts and the actual results and those differences may be material. While we consider that the information and opinions given in this report are sound all parties must rely on their own skill and judgement when making use of it. Under no circumstances may this report or any extract or summary thereof be used in connection with any public or private securities offering including any related memorandum or prospectus for any securities offering or stock exchange listing or announcement.

This document is issued for the party which commissioned it and for specific purposes connected with the above-captioned project only. It should not be relied upon by any other party or used for any other purpose.

We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other parties.

This document contains confidential information and proprietary intellectual property. It should not be shown to other parties without consent from us and from the party which commissioned it.

This report has been prepared solely for use by the party which commissioned it (the ‘Client’) in connection with the captioned project. It should not be used for any other purpose. No person other than the Client or any party who has expressly agreed terms of reliance with us (the ‘Recipient(s)’) may rely on the content, information or any views expressed in the report. We accept no duty of care, responsibility or liability to any other recipient of this document. This report is confidential and contains proprietary intellectual property.

No representation, warranty or undertaking, express or implied, is made and no responsibility or liability is accepted by us to any party other than the Client or any Recipient(s), as to the accuracy or completeness of the information contained in this report. For the avoidance of doubt this report does not in any way purport to include any legal, insurance or financial advice or opinion.

We disclaim all and any liability whether arising in tort or contract or otherwise which it might otherwise have to any party other than the Client or the Recipient(s), in respect of this report, or any information attributed to it.

We accept no responsibility for any error or omission in the report which is due to an error or omission in data, information or statements supplied to us by other parties including the client (‘Data’). We have not independently verified such Data and have assumed it to be accurate, complete, reliable and current as of the date of such information.

Forecasts presented in this document were prepared using Data and the report is dependent or based on Data. Inevitably, some of the assumptions used to develop the forecasts will not be realised and unanticipated events and circumstances may occur. Consequently Mott MacDonald does not guarantee or warrant the conclusions contained in the report as there are likely to be differences between the forecasts and the actual results and those differences may be material. While we consider that the information and opinions given in this report are sound all parties must rely on their own skill and judgement when making use of it.

Under no circumstances may this report or any extract or summary thereof be used in connection with any public or private securities offering including any related memorandum or prospectus for any securities offering or stock exchange listing or announcement.

Contents

Executive summary 1

1 Introduction 3

1.1 Basic Project Information 3

1.2 Project Organisation 3

1.3 Construction Programme 4

1.4 Construction Works undertaken during the Reporting Period 4

2 EM&A Requirements 5

2.1 Summary of EM&A Requirements 5

2.2 Monitoring Requirements 5

2.3 Action and Limit Levels 5

2.4 Event and Action Plans 6

2.5 Mitigation Measures 6

3 Environmental Monitoring and Audit 7

3.1 Air Quality Monitoring Results 7

3.2 Noise Monitoring Results 7

3.3 Implementation of Environmental Measures 7

3.4 Advice on the Solid and Liquid Waste Management Status 7

3.4.1 Disposal of Marine Sediment Extracted from Bored Piling Works 8

3.5 Environmental Licences and Permits 10

4 Summary of Exceedances, Complaints, Notification of Summons and Successful Prosecution 11

4.1 Summary of Exceedance of the Environmental Quality Performance Limit 11

4.2 Summary of Complaints, Notification of Summons and Successful Prosecution 11

5 Comments, Recommendations and Conclusions 13

5.1 Comments 13

5.2 Recommendations 13

5.3 Conclusions 14

Figures

Figure 1: Location of Air Quality Monitoring Stations

Figure 2: Location of Noise Monitoring Stations

Appendices

Appendix A. Location of Works Areas

Appendix B. Project Organization for Environmental Works

Appendix C. Construction Programme

Appendix D. Event and Action Plan

Appendix E. Implementation Schedule for Environmental Mitigation Measures (EMIS)

Appendix F. Site Audit Findings and Corrective Actions

Appendix G. Waste Flow Table

Appendix H. Environmental Licences and Permits

Appendix I. Statistics on Environmental Complaints, Notification of Summons and Successful Prosecutions

Tables

Table 1.1: Contact Information of Key Personnel 3

Table 2.1: Construction Dust and Noise Monitoring Locations 5

Table 2.2: Action and Limit Levels for 1-hour TSP 5

Table 2.3: Action and Limit Levels for 24-hour TSP 6

Table 2.4: Action and Limit Level for Construction Noise 6

Table 3.1: Summary of Marine Sediment disposed to Dumping Site via Contract No. HY/2013/03 9

Table 4.1: Summary of Environmental Complaints for the Reporting Month 11

Executive summary

This Quarterly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract No. HY/2013/04 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage II (Southern Portion)” (hereafter referred to as “the Contract”) for the Highways Department of Hong Kong Special Administrative Region (HKSAR). The Contract was awarded to China State Construction Engineering (Hong Kong) Limited (hereafter referred to as “the Contractor”) and Mott MacDonald Hong Kong Limited (MMHK) was appointed as the Environmental Team (ET) by the Contractor.

The Contract is part of the “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities” (HZMB HKBCF) Project which is a “Designated Project” under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap. 499) and for which an EIA Report (Register No. AEIAR-145/2009) was prepared and approved. The current Environmental Permit (EP) for HKBCF, namely No. EP-353/2009/K, was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Commencement of the Contract took place on 13 March 2015 and the construction works commenced on 13 July 2015.

Mott MacDonald Hong Kong Limited has been appointed by the Contractor to implement the Environmental Monitoring & Audit (EM&A) programme for the Contract in accordance with the Updated EM&A Manual for HKBCF (Version 1.0) and will be providing environmental team services for the Contract. This is the 6^th Quarterly EM&A Report for the Contract which summaries findings of the EM&A works during the reporting period from 1 October 2016 to 31 December 2016 (the “reporting period”).

Environmental Monitoring and Audit Progress

The EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKBCF (Version 1.0). It should be noted that the air quality and noise monitoring works for the Contract are covered by Contract No. HY/2010/02 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works” and Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and HKBCF”. The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS6 and AMS7 and noise monitoring at NMS2 and NMS3B as part of EM&A programme if these monitoring stations are no longer covered under Contract Nos. HY/2010/02 and HY/2011/03. However, this is subject to ENPO’s final decision on which ET should carry out the monitoring work at these stations.

The dates of site inspection during the reporting period are listed below:

● 4, 11, 18 and 24 October, 1, 8, 15, 21 and 29 November and 6, 13, 19 and 28 December 2016

Breaches of Action and Limit Levels

Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 is reported in the monthly EM&A report prepared by Contract No. HY/2011/03.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.

There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2010/02 during the reporting period.

Complaint Log

There were two complaints received in relation to the environmental impact during the reporting period.

Log No.	Environmental Complaint Ref. No.	Date of Complaint Receipt	Description
003	ENPO-C0102	10 November 2016	Water Quality
004	ENPO-C0107	14 December 2016	Noise

After investigation, it was concluded that the complaints were not related to Contract No. HY/2013/04.

Notifications of Summons and Successful Prosecutions

There were no notifications of summons or prosecutions received during this reporting period.

Reporting Changes

There was no reporting change during the reporting period.

1 Introduction

1.1 Basic Project Information

This is the 6^th Quarterly EM&A Report summarising the findings of EM&A activities conducted under the Contract from 1 October 2016 to 31 December 2016 (the “reporting period”).

1.2 Project Organisation

The organisation chart and lines of communication with respect to the on-site environmental management structure together with the contact information of the key personnel are shown in Appendix B. The key personnel contact names and numbers are summarized in Table 1.1.

Table 1.1: Contact Information of Key Personnel

Party	Position	Name	Telephone	Fax
Engineer or Engineer’s Representative (AECOM Asia Co. Ltd.)	Chief Resident Engineer	Alfred Cheng	3958 7471	3468 2076
Environmental Project Office / Independent Environmental Checker (Ramboll Environ Hong Kong Limited)	Environmental Project Office Leader	Y H Hui	3465 2888	3465 2899
	Independent Environmental Checker	Raymond Dai	3465 2888	3465 2899
	Environmental Site Supervisor	Ray Yan	5181 8165	3465 2899
Contractor (China State Construction Engineering (Hong Kong) Limited)	Site Agent	Eddie Tang	9863 7686	2459 4336
	Environmental Officer	Ricky Hon	9100 7509	2459 4336
Environmental Team (Mott MacDonald Hong Kong Limited)	Environmental Team Leader	Gary Chow	2828 5874	2827 1823
24-hour Complaint Hotline	-	-	5236 7111	-

1.3 Construction Programme

The Construction Works Programme of the Project is provided in Appendix C.

1.4 Construction Works undertaken during the Reporting Period

A summary of the construction activities undertaken during this reporting period is shown below:

● Pre-drilling: 13 no. completed

● Bored Pile: 62 no. completed

● Driven H Pile: 99 no. completed

● Box Culvert: 3 bays started

● Pile Cap: 18 no. completed

● Pier Column: 21 no. completed

● Pier Head: 18 no. completed

● Segment Erection: 3 completed

● Segment Delivery: 69 no. completed (marine-based)

● Generation of excavated marine sediment and transport to HKBCF Contract No. HY/2013/03 for disposal.

2 EM&A Requirements

2.1 Summary of EM&A Requirements

A summary of air and noise monitoring locations are presented in Table 2.1. The location of air quality and noise monitoring stations are shown as in Figure 1 and Figure 2, respectively.

Table 2.1: Construction Dust and Noise Monitoring Locations

Environmental Monitoring	Identification No.	Location Description
Air Quality	AMS6⁽¹⁾	Dragonair/CNAC (Group) Building
	AMS7⁽¹⁾	Hong Kong SkyCity Marriot Hotel
Noise	NMS2⁽²⁾	Seaview Crescent
	NMS3B^{(2) (3)}	Site Boundary of Site Office Area at Works Area WA2

Remarks: (1) The ET of this Contract should conduct impact air quality monitoring at the AMS listed in the table as part of EM&A programme according to latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.

(2) The ET of this Contract should conduct impact noise monitoring at the NMS listed in the table as part of EM&A programme according to the latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.

(3) The Action and Limit Levels for schools will be applied for this alternative monitoring location.

2.2 Monitoring Requirements

The monitoring requirements, monitoring equipment, monitoring parameters, frequency and duration, monitoring methodology, monitoring schedule, meteorological information are detailed in the monthly EM&A Reports prepared for Contract Nos. HY/2010/02 and HY/2011/03.

2.3 Action and Limit Levels

The Action and Limit Levels for 1-hr TSP and 24-hr TSP are provided in Table 2.2 and Table 2.3 respectively.

Table 2.2: Action and Limit Levels for 1-hour TSP

Monitoring Station	Action Level, mg/m³	Limit Level, mg/m³
AMS6 – Dragonair / SNAC (Group) Building (HKIA)	360	500
AMS7 – Hong Kong SkyCity Marriot Hotel	370	500

Table 2.3: Action and Limit Levels for 24-hour TSP

Monitoring Station	Action Level, mg/m³	Limit Level, mg/m³
AMS6 – Dragonair / SNAC (Group) Building (HKIA)	173	260
AMS7 – Hong Kong SkyCity Marriot Hotel	183	260

If exceedance(s) at these stations is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the monthly EM&A Report.

The Action and Limit Levels for construction noise are defined in Table 2.4.

Table 2.4: Action and Limit Level for Construction Noise

Parameter	Action Level	Limit Level
07:00 – 19:00 hours on normal weekdays	When one documented complaint is received	75 dB(A)*

Notes: If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the Noise Control Authority have to be followed.
* Reduce to 70 dB(A) for schools and 65 dB(A) during school examination period.

2.4 Event and Action Plans

The event and action plans for air quality and noise are provided in Appendix D.

2.5 Mitigation Measures

Environmental mitigation measures for the contract were recommended in the approved EIA Report. Appendix E lists the recommended mitigation measures and the implementation status.

3 Environmental Monitoring and Audit

3.1 Air Quality Monitoring Results

The monitoring results for AMS6 and AMS7 are reported in the monthly EM&A Reports (for October, November and December 2016) prepared for Contract Nos. HY/2011/03 and HY/2010/02 respectively.

Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 is reported in the monthly EM&A Reports (for October, November and December 2016) prepared by Contract No. HY/2011/03.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.

3.2 Noise Monitoring Results

The monitoring results for NMS2 and NMS3B are reported in the monthly EM&A Reports (for October, November and December 2016) prepared for Contract No. HY/2010/02.

No noise exceedances were recorded at stations NMS2 and NMS3B by the ET of Contract No. HY/2010/02 during the reporting period.

3.3 Implementation of Environmental Measures

In response to the site audit findings, the Contractor carried out corrective actions. Details of site audit findings and the corrective actions during the reporting period are presented in Appendix F.

A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix E. Most of the necessary mitigation measures were implemented properly.

Implementation status of the Regular Marine Travel Route Plan (RMTRP) was checked by ET. Training of marine travel route for marine vessel operator was given to relevant staff and relevant records were kept properly. Marine traffic records which indicated the number of trips data for crane barge, flat top barge and tug boat on the implementation of RMTRP from October 2016 to December 2016 were checked by ET. There was no contract-related marine traffic during October 2016. Marine traffic records of November 2016 were provided by Contractor to ER, ETL and IEC/ENPO for checking within the month of December 2016. The checking of marine traffic records of December 2016 will be reported in the next Quarterly EM&A Report. The implementation of marine traffic follows the Regular Marine Travel Route Plan with respect to ET’s checking on the marine traffic records for the reporting period.

3.4 Advice on the Solid and Liquid Waste Management Status

The Contractor registered as a chemical waste producer for the Contract. Sufficient numbers of receptacles were available for general refuse collection and sorting. As a practical means, the disposal operation is managed by a single HKBCF contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from this Contract.

There was no generation of excavated sediment for treatment during this reporting period. Any treatment of excavated marine sediment will be conducted using cement solidification / stabilization (Cement S/S) techniques and the treated sediment will be reused onsite for either backfilling or landscaping (e.g. berm material).

The summary of waste flow table is detailed in Appendix G.

The Contractor was reminded that chemical waste containers should be properly treated and stored temporarily in designated chemical waste storage area on site in accordance with the Code of Practice on the Packing, Labelling and Storage of Chemical Waste.

3.4.1 Disposal of Marine Sediment Extracted from Bored Piling Works

3.4.1.1 Background

After the acceptance of the review of the approved Sediment Quality Report (SQR) for this Project under EPD letter dated 19 August 2015, an approval to dispose the marine sediment extracted from bored piling for this Project was then approved under memo from Secretary, Marine Fill Committee of CEDD dated 20 August 2015 for the disposal of marine sediment extracted from bored piling works. The disposal sites allocated to this Project are the Mud Pit CMP2 of the Confined Marine Sediment Disposal Facility to the South of The Brothers (or at the East of Sha Chau). As advised by CEDD in the memo dated 19 February 2016, from 00:00 on 22 March 2016 onward, the disposal space at CMP2 of the South of The Brothers is closed and all disposal of contaminated sediment is to be carried out at CMP Vd to the East of Sha Chau (ESC).

As Contract No. HY/2013/01 has commenced treatment of the extracted marine sediment, treatment will continue and the treated marine sediment will be re-used within the HKBCF Island. On the other hand, Contract Nos. HY/2013/02, HY/2013/03 and HY/2013/04 have not commenced the treatment of extracted marine sediment. Therefore the marine sediment extracted from these three Contracts will be disposed to the allocated disposal sites directly without treatment. As a practical means, the disposal operation is managed by one contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from all three Contracts.

The SQR was further reviewed in mid-2016. EPD has no comment to extend the validity of the SQR to August 2017 under letter dated 18 August 2016.

Based on the actual piling operation, the estimated quantity of marine sediment to be extracted has been revised from 85,000 m³ to 126,000 m³(bulk volume). EPD has no comments on the request as in the letter dated 20 October 2016. The Secretary of Marine Fill Committee, CEDD approved the increasing quantity in the memo dated 10 November 2016.

During the course of reviewing the SQR, it was noted that the contamination level of the marine sediment extracted from the inner part of the HKBCF Island was not identified during the previous sampling and testing. As requested by EPD, sampling and testing are required. The Sediment Sampling and Testing Proposal (SSTP) for the inner area of the HKBCF Island was approved by EPD on 2 June 2016.

As in the agreed SSTP for the inner area of the HKBCF Island, samples were taken from the seventeen batches of stockpiled marine sediments and from five boreholes each in one of the five sampling grids. After conducting chemical tests on samples, six batches of stockpiled samples under Contract No. HY/2013/03 and all eight batches of stockpiled samples under Contract No. HY/20013/04 are classified as Category L sediment. The Secretary of Marine Fill Committee of CEDD allocated disposal sites under memo dated 24 October 2016 and dated 22 November 2016 for disposal of a total of 9,500 m³ in-situ volume of Category L sediment (using a bulk factor of 1.3). The Category L sediment was disposed in December 2016.

One sample from the batch of stockpiled marine sediment under Contract No. HY/2013/03 and samples from all five sampling grids had contamination levels exceeding the Lower Chemical Exceedance Levels (LCEL) and biological screenings were carried out. All samples passed the biological screenings and are classified as Category Mp sediment and to be disposed off site using Type II confined marine disposal method the same method used for marine sediment extracted from other part of the HKBCF Island.

3.4.1.2 Dumping Arrangements

The barge for disposal of marine sediment will morn at the temporary loading and unloading at the east shore of the HKBCF Island, which has been being used by reclamation contractor (Contract No. HY/2010/02) for reclamation activities. In terms of safety consideration, each dumping date will be allocated to one Contract. The quantity of marine sediment disposed on the date is from one Contract.

During dumping, each Contractor is responsible for transporting the marine sediment from his site area to the barge. The estimated quantity of marine sediment in each truck is confirmed by Resident Site Staff of each Contract. The trip tickets for transportation and disposal of marine sediment are collected and checked. Contract No. HY/2013/03 as the dumping permit holder is responsible for reporting to EPD the quantity disposed of as the condition stipulated in the dumping permit.

3.4.1.3 Reporting

Marine sediment extracted from bored piling in this Contract was disposed to allocated dumping site via Contract No. HY/2013/03 on 3, 4, 5, 11, 12, 13, 14, 17, 26 and 27 October and 3, 5, 6, 9, 10, 13, 14, 23, 24, 30 and 31 December 2016. The quantities disposed up to end of December 2016 are in following table (Table 3.1):

Table 3.1: Summary of Marine Sediment disposed to Dumping Site via Contract No. HY/2013/03

Month/Year	Quantity Disposed (m³)
Up to end September 2016	24,058
October 2016	5,286
November 2016	0
December 2016	2,538
Cat. L in December 2016	3,570
Total =	35,452

Note: All sediments are in Type II disposal method except Cat L (in Type I)

For monthly breakdown of these quantities, please refer to the waste flow table in Appendix G.

3.5 Environmental Licences and Permits

The valid environmental licences and permits during the reporting period are summarized in Appendix H.

4 Summary of Exceedances, Complaints, Notification of Summons and Successful Prosecution

4.1 Summary of Exceedance of the Environmental Quality Performance Limit

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.

There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2010/02 during the reporting period.

4.2 Summary of Complaints, Notification of Summons and Successful Prosecution

There were two complaints received in relation to the environmental impact during the reporting period. The summary of environmental complaints is presented in Table 4.1. The details of cumulative statistics of Environmental Complaints are provided in Appendix H.

Table 4.1: Summary of Environmental Complaints for the Reporting Month

Log No.	Environmental Complaint Ref. No.	Date of Complaint Receipt	Description
003	ENPO-C0102	10 November 2016	Water Quality
004	ENPO-C0107	14 December 2016	Noise

Environmental Complaint Ref. No. ENPO-C0102

The complaint was about muddy water being observed as a works barge “長盛308” was travelling east from the HZMB Scenic Hill site area to open waters opposite Tung Chung Ferry Pier on 7 November 2016. According to the complainant, the barge was carrying muddy water. A photo of the observation was also provided by the complainant.

As informed by the Contractor of HY/2013/04, no marine barges were operated and no marine works from HKBCF contract site were conducted under this contract on 7 November 2016.

Based on the investigation findings above, the complaint is considered invalid under HY/2013/04. Nevertheless, the Contractor is reminded to avoid vessels travelling in open waters during low tide, and more generally to implement all water quality mitigation measures identified in the EM&A Manual.

Environmental Complaint Ref. No. ENPO-C0107

The complaint was about hammering noise during night-time period from unidentified sources possibly from construction sites of HZMB. According to the complainant, in the preceding month hammering noise was heard during the early morning hours possibly from nearby construction sites. While the complainant was not sure about the exact source of this noise, he suspected that it was most likely from HZMB site works.

As informed by the Contractor of HY/2013/04, works conducted under Contract No. HY/2013/04 during restricted hours between mid-November and mid-December 2016 involved transport of concrete segments to HZMB HY/2013/04 site using tug boat and barge (marine-based) and crane and tractor with trailer (land-based). Such activity commenced after 1:30am in the morning. No hammering works were conducted by the Contract during restricted hours.

It was noted that the Contractor obtained valid Construction Noise Permits (CNP nos. GW-RS1064-16 and GW-RS1192-16) permitting the use of certain powered mechanical equipment (PME) during restricted hours including the period of mid-November to mid-December 2016. The abovementioned activity was permitted in these CNPs.

Based on the investigation findings above, the complaint is considered invalid under HY/2013/04. Nevertheless, the Contractor is reminded to observe all conditions stated in the relevant valid CNPs and implement all necessary noise mitigation measures identified in the EM&A Manual.

Notifications of Summons and Successful Prosecutions

Statistics on notifications of summons and successful prosecutions are summarized in Appendix I.

5 Comments, Recommendations and Conclusions

5.1 Comments

According to the environmental site inspections undertaken during the reporting period, the following recommendations were provided:

● The Contractor was reminded to clarify the intended use of the skip and remove any incompatible materials from it.

● The Contractor was reminded to provide drip tray for the container.

● The Contractor was reminded to ensure that all portions of haul road are provided with water spray.

● The Contractor was reminded to ensure that the NRMM label for a generator meets the regulatory requirements.

● The Contractor was reminded to collect and dispose of the general refuse properly.

● The Contractor was reminded to provide the necessary drip trays and/or bunded storage areas for oil drums.

● The Contractor should remove the suspected chemical container to avoid potential contamination of such runoff.

● The Contractor was reminded to turn on the pump to ensure that the stagnant water is sent to sedimentation tank or similar facility.

● The Contractor was reminded to improve the arrangement of the stockpile of used C&D construction materials.

● The Contractor was reminded to place all general refuse properly in the bin.

● The Contractor was reminded to ensure water spray is provided for haul roads behind a box culvert area and outside site office.

A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix E. Most of the necessary mitigation measures were implemented properly.

5.2 Recommendations

With implementation of the recommended environmental mitigation measures, the contract’s environmental impacts were considered environmentally acceptable. The weekly environmental site inspections ensured that all the environmental mitigation measures recommended were effectively implemented.

The recommended environmental mitigation measures, as included in the EM&A programme, effectively minimize the potential environmental impacts from the contract. Also, the EM&A programme effectively monitored the environmental impacts from the construction activities and ensure the proper implementation of mitigation measures. No particular recommendation was advised for the improvement of the programme.

5.3 Conclusions

Commencement of the Contract took place on 13 March 2015 and the construction works of the Contract commenced on 13 July 2015. This is the 6^th Quarterly EM&A Report summarising the findings of EM&A activities conducted under the Contract from 1 October 2016 to 31 December 2016.

Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A Reports (for October, November and December 2016) prepared by Contract No. HY/2011/03.

There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.

There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2010/02 during the reporting period.

Environmental site inspection was carried out on 4, 11, 18 and 24 October, 1, 8, 15, 21 and 29 November and 6, 13, 19 and 28 December 2016. Recommendations on remedial actions were given to the Contractors for the deficiencies identified during the site inspections.

There were two complaints received in relation to the environmental impact during the reporting period. After investigation, it was found that the complaints were not related to the Contract.

There were no notifications of summons or prosecutions received during the reporting period.