Job No.: TCS00694/13

 

 

 

 

 

 

 

 

 

Agreement No. CE 45/2008 (CE)

Liantang/Heung Yuen Wai

Boundary Control Point and Associated Works

 

 

 

 

 

 

 

 

 

Monthly Environmental Monitoring and Audit Report (No.37) ¡V August 2016

 

 

 

 

 

 

 

 

Prepared For

 

 

 

 

Civil Engineering and Development Department (CEDD)

 

 

 

 

 

 

 

 

 

 

 

Date

Reference No.

Prepared By

Certified By

12 September 2016

TCS00694/13/600/R0590v2

Nicola Hon

 (Environmental Consultant)

Tam Tak Wing

(Environmental Team Leader)

 

Version

Date

Remarks

1

8 September 2016

First Submission

2

12 September 2016

Amended according to the IEC¡¦s comments on 10 September 2016

 

 

 


 

 

 

 

executive summary

ES01            This is the 37th monthly EM&A report presenting the monitoring results and inspection findings for the reporting period from 1 to 31 August 2016 (hereinafter ¡¥the Reporting Period¡¦).

 

Environmental Monitoring and Audit Activities

ES02            To facilitate the project management and implementation, Liantang/Heung Yuen Wai Boundary Control Point and Associated Works of the Project is divided to seven CEDD contracts including Contract 2 (CV/2012/08), Contract 3 (CV/2012/09), Contract 4 (TCSS), Contract 5 (CV/2013/03), Contract 6 (CV/2013/08) and Contract 7 (NE/2014/03) and an ArshSD contract (Contract SS C505).

 

ES03            In the Reporting Period, the construction works under Liantang/Heung Yuen Wai Boundary Control Point and Associated Works of the Project currently included Contract 2, Contract 3, Contract 5, Contract 6, Contract 7 and Contract SS C505.  Environmental monitoring activities under the EM&A programme in the Reporting Period are summarized in the following table.

 

Environmental Aspect

Environmental Monitoring Parameters / Inspection

Reporting Period

Number of Monitoring Locations to undertake

Total Occasions  

Air Quality

1-hour TSP

9

147

24-hour TSP

9

49

Construction Noise

Leq(30min) Daytime

10

45

Water Quality

Water in-situ measurement and/or sampling

WM1 & WM1-C,

14 Scheduled & 0 extra

WM2A(a) & WM2A-Cx

14 Scheduled & 5 extra

WM2B & WM2B-C

14 Scheduled & 4 extra

WM3x &WM3-C

14 Scheduled & 0 extra

WM4, WM4-CA &WM4-CB

14 Scheduled & 0 extra

Joint Site Inspection / Audit

IEC, ET, the Contractor and RE joint site Environmental Inspection and Auditing

Contract 2

4

Contract 3

5

Contract 5

5

Contract 6

4

Contract 7

5

Contract SS C505

5

Note: Extra monitoring day was due to measurement results exceedance

 

Breach of Action and Limit (A/L) Levels

ES04            In the Reporting Period, no air quality exceedance and construction noise exceedance was registered for the Project.  For water quality monitoring, a total of thirty-two (32) Action/ Limit Level exceedances were recorded. The summary of exceedance in the Reporting Period is shown below.

 

Environmental Aspect

Monitoring Parameters

Action Level

Limit Level

Event & Action

NOE Issued

Investigation Result

Corrective Actions

Air Quality

1-hour TSP

0

0

0

--

--

24-hour TSP

0

0

0

--

--

Construction Noise

Leq(30min) Daytime

0

0

0

--

--

Water Quality

DO

0

0

0

--

--

Turbidity

2

10

12

The exceedances on 2, 3, 4, 10, 11 and 12 August  2016 were not project related.

Exceedances on 18, 19, 22, 23, 24 and 31 August 2016 are under investigation. 

It was reminded that the all the Contractor  shall implement water quality mitigation measures in accordance with ISEMM of the EM&A Manual requirements

SS

0

20

20

 

Environmental Complaint

ES05            In this Reporting Period, one (1) documented environmental complaint was received in respect of the wastewater issue related to Contract 6.  Upon receipt of the complaints, RE, IEC and ET with the relevant Contractors has immediately undertaken investigation. Follow up actions have been undertaking by the Contractor to resolve the deficiencies and investigation report conducted by ET had submitted to all relevant parties. 

 

Notification of Summons and Successful Prosecutions

ES06            No environmental summons or successful prosecutions were recorded in the Reporting Period.  

 

Reporting Change

ES07            No reporting changes were made in the Reporting Period.

 

Site Inspection

ES08            In this Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 2 has been carried out by the RE, IEC, ET and the Contractor on 5, 12, 19 and 26 August 2016.  No non-compliance was noted.

 

ES09            In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 3 has been carried out by the RE, IEC, ET and the Contractor on 1, 8, 15, 24 and 29 August 2016.  No non-compliance was noted.

 

ES10            In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 5 has been carried out by the RE, IEC, ET and the Contractor on 5, 9, 16, 23 and 30 August 2016.  No non-compliance was noted.

 

ES11            In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 6 has been carried out by the RE, IEC, ET and the Contractor on 4, 11, 18 and 25 August 2016.  No non-compliance was noted.

 

ES12            In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract SS C505 has been carried out by the RE, IEC, ET and the Contractor on 3, 9, 17, 24 and 31 August 2016.  No non-compliance was noted.

 

ES13            In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 7 has been carried out by the RE, IEC, ET and the Contractor on 5, 9, 16, 23 and 30 August 2016.  No non-compliance was noted.

 

Future Key Issues

ES14            As wet season has come, preventive measures for muddy water or other water pollutants from site surface flow to local stream such as Kong Yiu Channel, Ma Wat Channel, Ping Yuen River or public area would be the key issue.  The Contractors should paid special attention on water quality mitigation measures and fully implement according ISEMM of the EM&A Manual, in particular for working areas near Ma Wat Channel and Ping Yuen River.  Moreover, all effluent discharge shall be ensure to fulfill Technical Memorandum of Effluent Discharged into Drainage and Sewerage Systems, inland and Coastal Waters criteria or discharge permits stipulation.

 

ES15            Construction noise would be a key environmental issue during construction work of the Project.  Noise mitigation measures such as using quiet plants should be implemented in accordance with the EM&A requirement.

 

ES16            Since most of construction sites under the Project are located adjacent to villages, the Contractors should fully implement air quality mitigation measures to reduce construction dust emission.

 

 


Table of Contents

1     Introduction   1

1.1            Project Background   1

1.2            Report Structure  1

2     Project Organization and Construction progress  3

2.1            Construction Contract Packaging   3

2.2            Project Organization   5

2.3            Concurrent Projects  7

2.4            Construction Progress  7

2.5            Summary of Environmental Submissions  9

3     Summary of Impact Monitoring Requirements  14

3.1            General  14

3.2            Monitoring Parameters  14

3.3            Monitoring Locations  14

3.4            Monitoring Frequency and Period   16

3.5            Monitoring Equipment  17

3.6            Monitoring Methodology   19

3.7            Equipment Calibration   21

3.8            Derivation of Action/Limit (A/L) Levels  21

3.9            Data Management and Data QA/QC Control  22

4     Air Quality Monitoring   23

4.1            General  23

4.2            Air Quality Monitoring Results in Reporting Month   23

5     Construction Noise Monitoring   26

5.1            General  26

5.2            Noise Monitoring Results in Reporting Month   26

6     Water Quality Monitoring   27

6.1            General  27

6.2            Results of Water Quality Monitoring   27

7     Waste Management   31

7.1            General Waste Management  31

7.2            Records of Waste Quantities  31

8     Site Inspection   32

8.1            requirements  32

8.2            Findings / Deficiencies During the Reporting Month   32

9     Environmental Complaint and Non-Compliance   37

9.1            Environmental Complaint, Summons and Prosecution   37

10   Implementation Status of Mitigation Measures  41

10.1          General Requirements  41

10.2          Tentative Construction Activities in the Coming Month   41

10.3          Key Issues for the Coming Month   42

11   Conclusions and Recommendations  44

11.1          Conclusions  44

11.2          Recommendations  44

 


List of TABLES

Table 2-1        Status of Environmental Licenses and Permits of the Contracts

Table 3-1        Summary of EM&A Requirements

Table 3-2        Impact Monitoring Stations - Air Quality

Table 3-3        Impact Monitoring Stations - Construction Noise

Table 3-4        Impact Monitoring Stations - Water Quality

Table 3-5        Air Quality Monitoring Equipment

Table 3-6        Construction Noise Monitoring Equipment

Table 3-7        Water Quality Monitoring Equipment

Table 3-8        Action and Limit Levels for Air Quality Monitoring

Table 3-9        Action and Limit Levels for Construction Noise

Table 3-10      Action and Limit Levels for Water Quality

Table 4-1        Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM1a

Table 4-2        Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM2

Table 4-3        Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM3

Table 4-4        Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM4B

Table 4-5        Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM5a

Table 4-6        Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM6

Table 4-7        Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM7a

Table 4-8        Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM8

Table 4-9        Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM9b

Table 5-1        Summary of Construction Noise Monitoring Results (Contract 3 and 5)

Table 5-2        Summary of Construction Noise Monitoring Results (Contract 2 and 6)

Table 6-1        Summary of Water Quality Monitoring Results for Contract 2 and 3

Table 6-2        Summary of Water Quality Monitoring Results for Contract 5 and SS C505

Table 6-3        Summary of Water Quality Monitoring Results for Contract 6

Table 6-4        Summary of Water Quality Monitoring Results for Contract 2 and 6

Table 6-5        Breaches of Water Quality Monitoring Criteria in Reporting Period

Table 6-6        Summary of Water Quality Exceedance in the Reporting Period

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 for Contract 2

Table 8-2        Site Observations for Contract 3

Table 8-3        Site Observations for Contract 5

Table 8-4        Site Observations for Contract 6

Table 8-5        Site Observations for Contract SS C505

Table 8-6        Site Observations for Contract 7

Table 9-1        Statistical Summary of Environmental Complaints

Table 9-2        Statistical Summary of Environmental Summons

Table 9-3        Statistical Summary of Environmental Prosecution

Table 10-1      Environmental Mitigation Measures

 

List of Appendices

Appendix A    Layout Plan of the Project

Appendix B    Organization Chart

Appendix C    3-month rolling construction program

Appendix D    Designated Monitoring Locations as Recommended in the Approved EM&A Manual

Appendix E    Monitoring Locations for Impact Monitoring

Appendix F     Calibration Certificate of Monitoring Equipment and HOKLAS-accreditation Certificate of the Testing Laboratory

Appendix G    Event and Action Plan

Appendix H    Impact Monitoring Schedule

Appendix I     Database of Monitoring Result

Appendix J     Graphical Plots for Monitoring Result

Appendix K    Meteorological Data

Appendix L    Waste Flow Table

Appendix M   Implementation Schedule for Environmental Mitigation Measures

Appendix N    Investigation Report for Exceedance

 

 

 

 


1                    Introduction

1.1                       Project Background

1.1.1                 Civil Engineering and Development Department is the Project Proponent and the Permit Holder of Agreement No. CE 45/2008 (CE) Liantang / Heung Yuen Wai Boundary Control Point and Associated Works, which is a Designated Project to be implemented under Environmental Permit number EP-404/2011/C granted on 12 March 2015. 

 

1.1.2                 The Project consists of two main components: Construction of a Boundary Control Point (hereinafter referred as ¡§BCP¡¨); and Construction of a connecting road alignment.  Layout plan of the Project is shown in Appendix A.

 

1.1.3                 The proposed BCP is located at the boundary with Shenzhen near the existing Chuk Yuen Village, comprising a main passenger building with passenger and cargo processing facilities and the associated customs, transport and ancillary facilities.  The connecting road alignment consists of six main sections:

1)             Lin Ma Hang to Frontier Closed Area (FCA) Boundary ¡V this section comprises at-grade and viaducts and includes the improvement works at Lin Ma Hang Road;

2)             Ping Yeung to Wo Keng Shan ¡V this section stretches from the Frontier Closed Area Boundary to the tunnel portal at Cheung Shan and comprises at-grade and viaducts including an interchange at Ping Yeung;

3)             North Tunnel ¡V this section comprises the tunnel segment at Cheung Shan and includes a ventilation building at the portals on either end of the tunnel;

4)             Sha Tau Kok Road ¡V this section stretches from the tunnel portal at Wo Keng Shan to the tunnel portal south of Loi Tung and comprises at-grade and viaducts including an interchange at Sha Tau Kok and an administration building;

5)             South Tunnel ¡V this section comprises a tunnel segment that stretches from Loi Tung to Fanling and includes a ventilation building at the portals on either end of the tunnel as well as a ventilation building in the middle of the tunnel near Lau Shui Heung;

6)             Fanling ¡V this section comprises the at-grade, viaducts and interchange connection to the existing Fanling Highway.

 

1.1.4                 Action-United Environmental Services & Consulting has been commissioned as an Independent ET to implement the relevant EM&A program in accordance with the approved EM&A Manual, as well as the associated duties.  As part of the EM&A program, the baseline monitoring has carried out between 13 June 2013 and 12 July 2013 for all parameters including air quality, noise and water quality before construction work commencement.  The Baseline Monitoring Report summarized the key findings and the rationale behind determining a set of Action and Limit Levels (A/L Levels) from the baseline data.  Also, the Project baseline monitoring report which verified by the IEC has been submitted to EPD on 16 July 2013 for endorsement.  The major construction works of the Project was commenced on 16 August 2013 in accordance with the EP Section 5.3 stipulation.

 

1.1.5                 This is 37th monthly EM&A report presenting the monitoring results and inspection findings for reporting period from 1 to 31 August 2016.

 

1.2                       Report Structure

1.2.1                 The Monthly Environmental Monitoring and Audit (EM&A) 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     Environmental Complaints and Non-Compliance

Section 10   Implementation Status of Mitigation Measures

Section 11   Conclusions and Recommendations

 

 

 


2                             Project Organization and Construction progress

2.1                       Construction Contract Packaging

2.1.1                 To facilitate the project management and implementation, the Project would be divided by the following contracts:

¡P              Contract 2 (CV/2012/08)

¡P              Contract 3 (CV/2012/09)

¡P              Contract 4 (NE/2014/02)

¡P              Contract 5 (CV/2013/03)

¡P              Contract 6 (CV/2013/08)

¡P              Contract 7 (NE/2014/03)

¡P              ArchSD Contract No. SS C505

 

2.1.2                 The details of each contracts is summarized below and the delineation of each contracts is shown in Appendix A.

 

Contract 2 (CV/2012/08)

2.1.3                 Contract 2 has awarded in December 2013 and construction work was commenced on 19 May 2014.  Major Scope of Work of the Contract 2 is listed below:

¡P                construction of an approximately 5.2km long dual two-lane connecting road (with about 0.4km of at-grade road and 4.8km of tunnel) connecting the Fanling Interchange with the proposed Sha Tau Kok Interchange;

¡P                construction of a ventilation adit tunnel and the mid-ventilation building;

¡P                construction of the north and south portal buildings of the Lung Shan Tunnel and their associated slope works;

¡P                provision and installation of ventilation system, E&M works and building services works for Lung Shan tunnel and Cheung Shan tunnel and their portal buildings;

¡P                construction of Tunnel Administration Building adjacent to Wo Keng Shan Road and the associated E&M and building services works; and

¡P                construction of associated footpath, slopes, retaining structures, drainage, sewerage, waterworks, landscaping works and other ancillary works.

 

Contract 3 (CV/2012/09)

2.1.4                 Contract 3 was awarded in July 2013 and construction work was commenced on 5 November 2013.  Major Scope of Work of the Contract 3 is listed below:

¡P                construction of four link roads connecting the existing Fanling Highway and the south portal of the Lung Shan Tunnel;

¡P                realignment of the existing Tai Wo Service Road West and Tai Wo Service Road East;

¡P                widening of the existing Fanling Highway (HyD¡¦s entrustment works);

¡P                demolishing existing Kiu Tau vehicular bridge and Kiu Tau footbridge and reconstruction of the existing Kiu Tau Footbridge (HyD¡¦s entrustment works); and

¡P                construction of associated footpath, slopes, retaining structures, drainage, sewerage, waterworks, landscaping works and other ancillary works.

 

Contract 4 (NE/2014/02)

2.1.5                 Contract 4 has awarded in mid-April 2016. However, the major construction work still is not yet commenced.  The scope of work of the Contract 4 includes:

¡P             design, supply, delivery, installation, testing and commissioning of a traffic control and surveillance system for the connecting road linking up the Liantang / Heung Yuen Wai Boundary Control Point and the existing Fanling Highway.

 

Contract 5 (CV/2013/03)

2.1.6                 Contract 5 has awarded in April 2013 and construction work was commenced in August 2013.  Major Scope of Work of the Contract 5 is listed below:

¡P                site formation of about 23 hectares of land for the development of the BCP;

¡P                construction of an approximately 1.6 km long perimeter road at the BCP including a 175m long depressed road;

¡P                associated diversion/modification works at existing local roads and junctions including Lin Ma Hang Road;

¡P                construction of pedestrian subway linking the BCP to Lin Ma Hang Road;

¡P                provision of resite area with supporting infrastructure for reprovisioning of the affected village houses; and

¡P                construction of associated footpath, slopes, retaining structures, drainage, sewerage, waterworks, landscaping works and other ancillary works.

 

Contract 6 (CV/2013/08)

2.1.7                 Contract 6 has awarded in June 2015 and construction work was commenced on 23 October 2015.  Major Scope of Work of the Contract 6 would be included below:

Ÿ    construction of an approximately 4.6km long dual two-lane connecting road (with about 0.6km of at-grade road, 3.3km of viaduct and 0.7km of tunnel) connecting the BCP with the proposed Sha Tau Kok Road Interchange and the associated ventilation buildings;

Ÿ    associated diversion/modification works at access roads to the resite of Chuk Yuen Village;

Ÿ    provision of sewage collection, treatment and disposal facilities for the BCP and the resite of Chuk Yuen Village;

Ÿ    construction of a pedestrian subway linking the BCP to Lin Ma Hang Road;

Ÿ    provisioning of the affected facilities including Wo Keng Shan Road garden; and

Ÿ    construction of associated footpath, slopes, retaining structures, drainage, sewerage, waterworks, landscaping works and other ancillary works.

 

Contract 7 (NE/2014/03)

2.1.8                 Contract 7 has awarded in December 2015 and the construction works of Contract 7 was commenced on 15 February 2016.  Major Scope of Work of the Contract 7 would be included below:

Ÿ    construction of the Hong Kong Special Administrative Region (HKSAR) portion of four vehicular bridge

Ÿ    construction of one pedestrian bridge crossing Shenzhen (SZ) River (cross boundary bridges)

 

ArchSD Contract No. SS C505

2.1.9                 SS C505 has awarded in July 2015 and construction work was commenced on 1 September 2015.  Major Scope of Work of the SS C505 would be included below:

Ÿ    passenger-related facilities including processing kiosks and examination facilities for private cars and coaches, passenger clearance building and halls, the interior fitting works for the pedestrian bridge crossing Shenzhen River, etc.;

Ÿ    cargo processing facilities including kiosks for clearance of goods vehicles, customs inspection platforms, X-ray building, etc.;

Ÿ    accommodation for the facilities inside of the Government departments providing services in connection with the BCP;

Ÿ    transport-related facilities inside the BCP including road networks, public transport interchange, transport drop-off and pick-up areas, vehicle holding areas and associated road furniture etc;

Ÿ    a public carpark; and

Ÿ    other ancillary facilities such as sewerage and drainage, building services provisions and electronic systems, associated environmental mitigation measure and landscape works.

 

2.2                       Project Organization

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

 

Civil Engineering and Development Department (CEDD)

2.2.2                 CEDD is the Project Proponent and the Permit Holder of the EP of the development of the Project and will assume overall responsibility for the project. An Independent Environmental Checker (IEC) shall be employed by CEDD to audit the results of the EM&A works carried out by the ET.

 

Architectural Services Department (ArchSD)

2.2.3                 ArchSD acts as the works agent for Development Bureau (DEVB), for Contract SS C505 Liantang/ Heung Yuen Wai Boundary Control Point (BCP) ¡V BCP Buildings and Associated Facilities.

 

Environmental Protection Department (EPD)

2.2.4                 EPD is the statutory enforcement body for environmental protection matters in Hong Kong.

 

Ronald Lu & Partners (Hong Kong) Ltd (The Architect)

2.2.5                 Ronald Lu & Partners (Hong Kong) Ltd is appointed by ArchSD as an Architect for Contract SS C505 Liantang/ Heung Yuen Wai Boundary Control Point (BCP) ¡V BCP Buildings and Associated Facilities.  It responsible for overseeing the construction works of Contract SS C505 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 Architect with respect to EM&A are:

Ÿ    Monitor the Contractors¡¦ compliance with contract specifications, including the implementation and operation of the environmental mitigation measures and their effectiveness

Ÿ    Monitor Contractors¡¦ and ET¡¦s compliance with the requirements in the Environmental Permit (EP) and EM&A Manual

Ÿ    Facilitate ET¡¦s implementation of the EM&A programme

Ÿ    Participate in joint site inspection by the ET and IEC

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

Ÿ    Adhere to the procedures for carrying out complaint investigation

Ÿ    Liaison with DSD, Engineer/Engineer¡¦s Representative, ET, IEC and the Contractor of the ¡§Construction of the DSD¡¦s Regulation of Shenzhen River Stage 4 (RSR 4)¡¨ Project discussing regarding the cumulative impact issues.

 

Engineer or Engineers Representative (ER)

2.2.6                 The ER 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 ER with respect to EM&A are:

¡P           Monitor the Contractors¡¦ compliance with contract specifications, including the implementation and operation of the environmental mitigation measures and their effectiveness

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

¡P           Facilitate ET¡¦s implementation of the EM&A programme

¡P           Participate in joint site inspection by the ET and IEC

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

¡P           Adhere to the procedures for carrying out complaint investigation

¡P           Liaison with DSD, Engineer/Engineer¡¦s Representative, ET, IEC and the Contractor of the ¡§Construction of the DSD¡¦s Regulaiton of Shenzhen River Stage 4 (RSR 4)¡¨ Project discussing regarding the cumulative impact issues.

 

The Contractor(s)

2.2.7                 There will be one contractor for each individual works contract. Once the contractors are appointed, EPD, ET and IEC will be notified the details of the contractor.

2.2.8                 The Contractor for Contracts under CEDD should report to the ER. For ArchSD Contract, the Contractor should report to the Architect or Architect¡¦s Representative (AR). The duties and responsibilities of the Contractor are:

¡P           Comply with the relevant contract conditions and specifications on environmental protection

¡P           Employ an Environmental Team (ET) to undertake monitoring, laboratory analysis and reporting of EM &A Facilitate ET¡¦s monitoring and site inspection activities

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

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

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

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

¡P           Adhere to the procedures for carrying out complaint investigation

 

Environmental Team (ET)

2.2.9                 Once the ET is appointed, the EPD, CEDD, ER, Architect and IEC will be notified the details of the ET.

 

2.2.10             The ET shall not be in any way an associated body of the Contractor(s), and shall be employed by the Project Proponent/Contractor 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. Suitably 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.  The ET shall report to the Project Proponent and the duties shall include:

¡P           Monitor and audit various environmental parameters as required in this EM&A Manual

¡P           Analyse 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

¡P           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

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

¡P           Audit environmental conditions on site

¡P           Report on the environmental monitoring and audit results to EPD, the ER, the Architect, the lEC and Contractor or their delegated representatives

¡P           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

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

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

¡P           Adhere to the procedures for carrying out complaint investigation

¡P           Liaison with the client departments, Engineer/Engineer¡¦s Representative, ET, lEC and the Contractor(s) of the concurrent projects as listed under Section 2.3 below regarding the cumulative impact issues.

 

Independent Environmental Checker (IEC)

2.2.11             One IEC will be employed for this Project. Once the IEC is appointed, EPD, ER, the Architect and ET will be notified the details of the IEC.

 

2.2.12             The Independent Environmental Checker (IEC) should not be in any way an associated body of the Contractor 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 10 years¡¦ experience in EM&A and have relevant professional qualifications. The appointment of IEC should be subject to the approval of EPD. The IEC should:

¡P           Provide proactive advice to the ER 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

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

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

¡P           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

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

¡P           Check compliance with the procedures for carrying out complaint investigation

¡P           Check the effectiveness of corrective measures

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

¡P           Check that the mitigation measures are effectively implemented

¡P           Verify the log-book(s) mentioned in Condition 2.2 of the EP, notify the Director by fax, within one working day of receipt of notification from the ET Leader of each and every occurrence, change of circumstances or non-compliance with the EIA Report and/or the EP, which might affect the monitoring or control of adverse environmental impacts from the Project

¡P           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 ER and Project Proponent on a monthly basis

¡P           Liaison with the client departments, Engineer/Engineer¡¦s Representative, the Architect, ET, lEC and the Contractor of the concurrent projects as listed under Section 2.3 below regarding the cumulative impact issues.

 

2.3                       Concurrent Projects

2.3.1                 The concurrent construction works that may be carried out include, but not limited to, the following:

                                (a)            Regulation of Shenzhen River Stage IV;

                                (b)            Widening of Fanling Highway ¡V Tai Hang to Wo Hop Shek Interchange ¡V Contract No. HY/2012/06;

                                (c)            Construction of BCP facilities in Shenzhen.

 

2.4                       Construction Progress

2.4.1                 In the Reporting Period, the major construction activity conducted under the Project is located in Contracts 2, 3, 5, 6, 7 and SS C505 and they are summarized in below.  Moreover, 3-month rolling construction program for all the current contracts is enclosed in Appendix C. 

 

Contract 2 (CV/2012/08)

2.4.2                 The contract commenced in May 2014. In this Reporting Period, construction activities conducted are listed below:

Mid-Vent Portal

Ÿ    Tube excavation (NB + SB)

Ÿ    Adit invert slab, waterproofing and lining, post-excavation grouting

Ÿ    Ventilation building superstructure and backfilling

North Portal

Ÿ    Slope stabilization and retaining wall

Ÿ    Southbound Tunnel Boring Machine (TBM) excavation

Ÿ    Northbound bench excavation and tunnel enlargement

South Portal

Ÿ    Southbound and Northbound Drill and Blast (D&B) excavation

Ÿ    South ventilation building superstructure

Ÿ    Blast curtain inside the tunnel

Admin Building

Ÿ    Building superstructure

Contract 3 (CV/2012/09)

2.4.3                 The Contract commenced in November 2013.  In this Reporting Period, construction activities conducted are listed below:

Ÿ   Cable detection and trial trenches

Ÿ   Installation of Stone Cladding

Ÿ   Noise barrier construction

Ÿ   Pier / pier table construction

Ÿ   Pile cap works

Ÿ   Portal beam construction

Ÿ   Piling Works for Viaduct

Ÿ   Piling Works for Noise Barrier

Ÿ   Retaining Wall construction

Ÿ   Road works

Ÿ   Sewer works

Ÿ   Slope works

Ÿ   Utilities Duct Laying

Ÿ   Water Main Laying

Ÿ   Viaduct segment erection

 

Contract 4 (Contract number to be assigned)

2.4.4                 The Contract was awarded in mid-April 2016 and the major construction work has not yet commenced.

 

Contract 5 (CV/2013/03)

2.4.5                 The Contract awarded in April 2013 and commenced on August 2013.  As advised by the ER, the construction works under Contract 5 was substantially completed on 31 August 2016.  In this Reporting Period, construction activities conducted are listed below:

Ÿ   Bituminous laying at existing Lin Ma Hang (LMH) road

Ÿ   Brick laying at footpath at LMH road

Ÿ   Road works (kerb & bituminous laying) at existing LMH road

Ÿ   Installation of Underground Utility (additional) at proposed and existing LMH road

Ÿ   Irrigation system at existing LMH Road

 

Contract 6 (CV/2013/08)

2.4.6                 Contract 6 has awarded in June 2015 and construction work was commenced on 23 October 2015. In this Reporting Period, construction activities conducted are listed below:

Ÿ    Slope Works

Ÿ   Bored Piling

Ÿ   Pile Cap Construction

Ÿ   Bridge Pier Construction

Ÿ   Tunnel Excavation

Ÿ    Sewage Treatment Plant Construction

 

Contract 7 (NE/2014/03)

2.4.7                 Contract 7 has awarded in December 2015 and construction work was commenced on 15 February 2016.  In this Reporting Period, construction activities conducted are listed below:

Ÿ   Piling Works at Bridges A, C and E

Ÿ   Pile Caps Construction at Bridges B, C and D

 

Contract SS C505

2.4.8                 Contract SS C505 has awarded in July 2015 and construction work was commenced on 1 September 2015.  In this Reporting Period, construction activities conducted are listed below:

Ÿ   General Site Set-up

Ÿ   Building no.4, 5, 6, 9, 11 and 36 construction

Ÿ   Excavation waterproofing works for Building no. 4, 6 & 11

Ÿ   Pile cap construction for Building no.4,6&7

Ÿ   Tower crane operation and erection

Ÿ   Disassembly of crawler crane

Ÿ   Grouting and full core to completed bored piles

Ÿ   Bridge construction works including construction of bridge column, retaining wall, pile cap and pier

Ÿ   Underground drainage works

Ÿ   Prototype ¡§A¡¨ construction works

Ÿ   Mock up for south entrance double curve cladding

Ÿ   Formwork and falsework for PTB¡¦s slab construction

Ÿ   Construction PTB M/F flat slab

Ÿ   Steel beam works for maintenance platform for PTB

Ÿ   Pile cap construction for PTB, including excavation and backfilling works

Ÿ   Bridge deck construction for Bridges 1, 2 & 3

Ÿ   Footing construction

 

2.5                       Summary of Environmental Submissions

2.5.1                 In according to the EP, the required documents have submitted to EPD which listed in below:

Ÿ   Project Layout Plans of Contracts 2, 3, 5, 6, 7 and SS C505

Ÿ   Landscape Plan

Ÿ   Topsoil Management Plan

Ÿ   Environmental Monitoring and Audit Programme

Ÿ   Baseline Monitoring Report (TCS00690/13/600/R0030v3) for the Project

Ÿ   Waste Management Plan of the Contracts 2, 3, 5, 6, 7 and SS C505

Ÿ   Contamination Assessment Plan (CAP) and Contamination Assessment Report (CAR) for Po Kat Tsai, Loi Tung and the workshops in Fanling

Ÿ   Vegetation Survey Report

Ÿ   Woodland Compensation Plan

Ÿ   Habitat Creation Management Plan

Ÿ   Wetland Compensation Plan

 

2.5.2                 Summary of the relevant permits, licenses, and/or notifications on environmental protection for the Project of each contracts are presented in Table 2-1.

Table 2-1    Status of Environmental Licenses and Permits of the Contracts

Item

Description

License/Permit Status

Ref. no.

Effective Date

Expiry Date

Contract 2

1

Air pollution Control (Construction Dust) Regulation

Ref No.: 368864

31 Dec 2013

Till Contract ends

2

Chemical Waste Producer Registration

North Portal

Waste Producers Number: No.5213-652-D2523-01

25 Mar 2014

Till Contract ends

Mid-Vent Portal

Waste Producers Number: No.5213-634-D2524-01

25 Mar 2014

Till Contract ends

South Portal

Waste Producers Number: No.5213-634-D2526-01

9 Apr 2014

Till Contract ends

3

Water Pollution Control Ordinance - Discharge License

No.WT00018374-2014

8 Oct 2014

30 Sep 2019

No.: W5/1I389

28 Mar 2014

31 Mar 2019

No. WT00023063-2015

18 Dec 2015

31 Mar 2019

No.: W5/1I392

28 Mar 2014

31 Mar 2019

4

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Account No. 7019105

8 Jan 2014

Till Contract ends

5

Construction Noise Permit

GW-RN0077-16

07 Feb 2016

06 Aug 2016

GW-RN0199-16

24 Mar 2016

17 Sep 2016

GW-RN0332-16

09 May 2016

08 Aug 2016

GW-RN0359-16

20 May 2016

19 Aug 2016

GW-RN0378-16

30 May 2016

29 Aug 2016

GW-RN0451-16

24 Jun 2016

19 Sep 2016

GW-RN0457-16

22 Jun 2016

14 Dec 2016

GW-RN0435-16

27 Jun 2016

26 Dec 2016

GW-RN0519-16

1 Aug 2016

30 Oct 2016

GW-RN0543-16

18 Jul 2016

13 Jan 2017

GW-RN0582-16

09 Aug 2016

08 Nov 2016

GW-RN0590-16

09 Aug 2016

08 Nov 2016

GW-RN0579-16

11 Aug 2016

07 Jan 2017

GW-RN0604-16

11 Aug 2016

07 Jan 2017

6

Specified Process License

(Mortar Plant Operation)

L-3-251(1)

12-Apr-2016

11-Apr-2021

Contract 3

1

Air pollution Control (Construction Dust) Regulation

Ref. No: 362101

17 Jul 2013

Till Contract ends

2

Chemical Waste Producer Registration

Waste Producers Number: No.:5113-634-C3817-01

 

7 Oct 2013

Till Contract ends

3

Water Pollution Control Ordinance - Discharge License

No.:WT00016832 ¡V 2013

28 Aug 13

31 Aug 2018

4

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Account No. 7017914

2 Aug 13

Till Contract ends

5

 

 

Construction Noise Permit

GW-RN0064-16

16 Feb 2016

13 Aug 2016

GW-RN0098-16

1 Mar 2016

4 Sep 2016

GW-RN0113-16

25 Feb 2016

24 Aug 2016

GW-RN0139-16

2 Mar 2016

24 Aug 2016

GW-RN0140-16

2 Mar 2016

24 Aug 2016

GW-RN0158-16

8 Mar 2016

31 Aug 2016

GW-RN0170-16

11 Mar 2016

10 Sep 2016

GW-RN0218-16

6 Apr 2016

30 Sep 2016

GW-RN0233-16

11 Apr 2016

10 Oct 2016

GW-RN0305-16

5 May 2016

4 Aug 2016

GW-RN0307-16

10 May 2016

9 Sep 2016

GW-RN0308-16

10 May 2016

9 Sep 2016

GW-RN0309-16

30 Apr 2016

29 Oct 2016

GW-RN0414-16

18 Jun 2016

17 Dec 2016

GW-RN0419-16

21 Jun 2016

30 Sep 2016

GW-RN0421-16

21 Jun 2016

30 Sep 2016

GW-RN0434-16

22 Jun 2016

21 Dec 2016

GW-RN0446-16

24 June 2016

31 Aug 2016

GW-RN0509-16

16 Jul 2016

31 Aug 2016

GW-RN0514-16

16 Jul 2016

15 Oct 2016

GW-RN0525-16

20 Jul 2016

7 Jan 2017

GW-RN0541-16

5 Aug 2016

4 Nov 2016

GW-RN0549-16

30 Jul 2016

9 Jan 2017

GW-RN0557-16

8 Aug 2016

30 Sep 2016

GW-RN0561-16

16 Aug 2016

11 Feb 2017

GW-RN0580-16

25 Aug 2016

24 Feb 2017

GW-RN0581-16

25 Aug 2016

24 Feb 2017

GW-RN0596-16

17 Aug 2016

15 Feb 2017

GW-RN0606-16

27 Aug 2016

2 Oct 2016

GW-RN0619-16

22 Aug 2016

14 Feb 2017

Contract 5

1

Air pollution Control (Construction Dust) Regulation

Ref. No: 359338

 

13 May 2013

Till the end of Contract

2

Chemical Waste Producer Registration

Waste Producers Number No.: 5213-642-S3735-01

8 Jun 2013

Till the end of Contract

3

Water Pollution Control Ordinance - Discharge License

No.: W5/1G44/1

8 Jun 13

30 Jun 2018

4

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Account No. 7017351

29 Apr 13

Till the end of Contract

Contract 6

1

Air pollution Control (Construction Dust) Regulation

Ref. No: 390614

29 Jun 2015

Till the end of Contract

2

Chemical Waste Producer Registration

Waste Producers Number No.: 5213-652-C3969-01

31 Aug 2015

Till the end of Contract

3

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Account No. 7022707

9 Jul 2015

Till the end of Contract

4

Water Pollution Control Ordinance - Discharge License

No.:WT00024574-2016

31 May 2016

31 May 2021

No.:WT00024576-2016

31 May 2016

31 May 2021

No.:WT00024742-2016

14 June 2016

30 June 2021

No.:WT00024746-2016

14 June 2016

30 June 2021

Contract SS C505

1

Air pollution Control (Construction Dust) Regulation

Ref. No: 390974

13 Jul 2015

Till the end of Contract

2

Chemical Waste Producer Registration

Waste Producer No.: 5213-642-L1048-07

16 Sep 2015

Till the end of Contract

3

Water Pollution Control Ordinance - Discharge License

No.: WT00024865-2016

8 Jul 2016

30 Nov 2020

4

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Account No. 7022831

23 Jul 2015

Till the end of Contract

5

Construction Noise Permit

GW-RN0396-16

5 June 2016

4 Nov 2016

PP-RN0020-16

16 Jul 2016

14 Jan 2017

GW-RN0520-16

23 Jul 2016

22 Jan 2017

Contract 7

1

Air pollution Control (Construction Dust) Regulation

Ref. No: 397015

21 Dec 2015

Till the end of Contract

2

Chemical Waste Producer Registration

Waste Producer No.: 5214-641-K3202-01

24 Mar 2016

Till the end of Contract

3

Water Pollution Control Ordinance - Discharge License

No.: WT00024422-2016

10 May 2016

31 May 2021

4

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Account No. 7024129

21 Jan 2016

Till the end of Contract

5

Construction Noise Permit

GW-RN0538-16

23 Jul 2016

4 Nov 2016

                                  Contract 4

1

 

Air pollution Control (Construction Dust) Regulation

Form of Notification of Construction work has submitted to EPD in July 2016.

2

Chemical Waste Producer Registration

Application is under preparation

3

Water Pollution Control Ordinance - Discharge License

Application is under preparation

4

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Application is under preparation


3                             Summary of Impact Monitoring Requirements

3.1                       General

3.1.1                 The Environmental Monitoring and Audit 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.

 

3.1.2                 A summary of construction phase EM&A requirements are presented in the sub-sections below.

 

3.2                       Monitoring Parameters

3.2.1                 The EM&A program of construction phase monitoring shall cover the following environmental issues:

                     Air quality;

                     Construction noise; and

                     Water quality

 

3.2.2                 A summary of the monitoring parameters is presented 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 normal working days (Monday to Saturday) 07:00-19:00 except public holiday; and

Ÿ  3 sets of consecutive Leq(5min) on restricted hours i.e. 19:00 to 07:00 next day, and whole day of public holiday or Sunday

Ÿ  Supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.

Water Quality

In-situ Measurements

Ÿ  Dissolved Oxygen Concentration (mg/L);

Ÿ  Dissolved Oxygen Saturation (% );

Ÿ  Turbidity (NTU);

Ÿ  pH unit;

Ÿ  Water depth (m); and

Ÿ  Temperature (¢J).

Laboratory Analysis

Ÿ  Suspended Solids (mg/L)

 

3.3                       Monitoring Locations

3.3.1                 The designated monitoring locations as recommended in the EM&A Manual are shown in Appendix D.  As the access to some of the designated monitoring locations was questionable due to safety reason or denied by the landlords, alternative locations therefore have had proposed. The proposed alternative monitoring locations has updated in the revised EM&A Programme which verified by IEC and certified by ET Leader prior submitted to EPD on 10 July 2013.  Table 3-2, Table 3-3 and Table 3-4 are respectively listed the air quality, construction noise and water quality monitoring locations for the Project and a map showing these monitoring stations is presented in Appendix E.

Table 3-2        Impact Monitoring Stations - Air Quality

Station ID

Description

Works Area

Related to the Work Contract

AM1b^

Open area at Tsung Yuen Ha Village

BCP

SS C505

Contract 5

Contract 7

AM2

Village House near Lin Ma Hang Road

LMH to Frontier Closed Area

Contract 5

Contract 6

AM3

Ta Kwu Ling Fire Service Station of Ta Kwu Ling Village.

LMH to Frontier Closed Area

Contract 5

Contract 6

AM4b^

House no. 10B1 Nga Yiu Ha Village

LMH to Frontier Closed Area

Contract 6

AM5a^

Ping Yeung Village House

Ping Yeung to Wo Keng Shan

Contract 6

AM6

Wo Keng Shan Village House

Ping Yeung to Wo Keng Shan

Contract 6

AM7b@

Loi Tung Village House

Sha Tau Kok Road

Contract 2

Contract 6

AM8

Po Kat Tsai Village No. 4

Po Kat Tsai

Contract 2

AM9b#

Nam Wa Po Village House No. 80

Fanling

Contract 3

# Proposal for the change of air quality monitoring location from AM9a to AM9b was submitted to EPD on 4 Nov 2013 after verified by the IEC and it was approved by EPD (EPD¡¦s ref.: (15) in EP 2/N7/A/52 Pt.10 dated 8 Nov 2013).

* Proposal for the change of air quality monitoring location from AM1to AM1a was submitted to EPD on 24 March 2014 after verified by the IEC. It was approved by EPD (EPD¡¦s ref.: (6) in EP 2/N7/A/52 Pt.12 dated 9 Jun 2014).

@ Proposal for the change of air quality monitoring location from AM7a to AM7b was submitted to EPD on 4 June 2014 after verified by the IEC. It was approved by EPD (EPD¡¦s ref.: (7) in EP 2/N7/A/52 Pt.12 dated 9 Jun 2014).

^ Proposal for change of air quality monitoring locations was enclosed in the updated EM&A Programme which approval by EPD on 29 Mar 2016.

 

Table 3-3        Impact Monitoring Stations - Construction Noise

Station ID

Description

Works Area

Related to the Work Contract

NM1

Tsung Yuen Ha Village House No. 63

BCP

SS C505

Contract 5

Contract 7

NM2a#

Village House near Lin Ma Hang Road

Lin Ma Hang to Frontier Closed Area

Contract 5,

Contract 6

NM3

Ping Yeung Village House (facade facing northeast)

Ping Yeung to Wo Keng Shan

Contract 6

NM4

Wo Keng Shan Village House

Ping Yeung to Wo Keng Shan

Contract 6

NM5

Village House, Loi Tung

Sha Tau Kok Road

Contract 2,

Contract 6

NM6

Tai Tong Wu Village House 2

Sha Tau Kok Road

Contract 2,

Contract 6

NM7

Po Kat Tsai Village

Po Kat Tsai

Contract 2

NM8

Village House, Tong Hang

Fanling

Contract 2

Contract 3

NM9

Village House, Kiu Tau Village

Fanling

Contract 3

NM10

Nam Wa Po Village House No. 80

Fanling

Contract 3

# Proposal for the change of construction noise monitoring location from NM2 to NM2a was verified by the IEC on 6 May 2016 and was effective on 9 May 2016.

 


 

Table 3-4        Impact Monitoring Stations - Water Quality

Station ID

Description

Coordinates of Designated / Alternative Location

Nature of the location

Related to the Work Contract

Easting

Northing

WM1

Downstream of Kong Yiu Channel

833 679

845 421

Alternative location located at upstream 51m of the designated location

SS C505

Contract 5

Contract 6

WM1- Control

Upstream of Kong Yiu Channel

834 185

845 917

NA

SS C505

Contract 5

Contract 6

WM2A

Downstream of River Ganges

834 204

844 471

Alternative location located at upstream 81m of the designated location

Contract 6

WM2A(a)*

Downstream of River Ganges

834 191

844 474

Alternative location located at upstream 70m of the designated location

Contract 6

WM2A- Controlx#

Upstream of River Ganges

835 377

844 188

Alternative location located at upstream 160m of the designated location

Contract 6

WM2B

Downstream of River Ganges

835 433

843 397

NA

Contract 6

WM2B- Control

Upstream of River Ganges

835 835

843 351

Alternative location located at downstream 31m of the designated location

Contract 6

WM3x#

Downstream of River Indus

836 206

842 270

Alternative location located at downstream 180m of the designated location

Contract 2

Contract 6

WM3- Control

Upstream of River Indus

836 763

842 400

Alternative location located at downstream 26m of the designated location

Contract 2

Contract 6

WM4

Downstream of Ma Wat Channel

833 850

838 338

Alternative location located at upstream 11m of the designated location

Contract 2

Contract 3

WM4¡V Control A

Kau Lung Hang Stream

834 028

837 695

Alternative location located at downstream 28m of the designated location

Contract 2

Contract 3

WM4¡V Control B

Upstream of Ma Wat Channel

833760

837395

Alternative location located at upstream 15m of the designated location

Contract 2

Contract 3

Note: EPD has approved the revised EM&A Programme on 29th March 2016. If the measured water depth of the monitoring station is lower than 150 mm, alternative location (WM3x and WM2A-Controlx) based on the criteria were selected to perform water monitoring in accordance with the updated EM&A Programme (Rev. 05) (Section 4.1.4)

* Proposal for the change of water monitoring location from WM2A to WM2A(a) was verified by the IEC and it was approved by EPD. (EPD¡¦s ref. (10) in EP 2/N7/A/52 Pt.19)

 

3.4                       Monitoring Frequency and Period

The requirements of impact monitoring are stipulated in Sections 2.1.6, 3.1.5 and 4.1.6 of the approved EM&A Manual and presented as follows.

 

Air Quality Monitoring

3.4.1                 Frequency of impact air quality monitoring is as follows:

Ÿ   1-hour TSP

3 times every six days during course of works

Ÿ   24-hour TSP

Once every 6 days during course of works.

 

Noise Monitoring

3.4.2                 One set of Leq(30min) as 6 consecutive Leq(5min) between 0700-1900 hours on normal weekdays and once every week during course of works.  If construction work necessary to carry out at other time periods, i.e. restricted time period (19:00 to 07:00 the next morning and whole day on public holidays) (hereinafter referred as ¡§the restricted hours¡¨), 3 consecutive Leq(5min) measurement will depended CNP requirements to undertake.  Supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.

 

Water Quality Monitoring

3.4.3                 The water quality monitoring frequency shall be 3 days per week during course of works.  The interval between two sets of monitoring 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 approve.

 

3.5.2                 The filter paper of 24-hour TSP measurement shall be determined by HOKLAS accredited laboratory.

 

3.5.3                 All equipment to be used for air quality monitoring is listed in Table 3-5.

Table 3-5         Air Quality Monitoring Equipment

Equipment

Model

24-Hr TSP

High Volume Air Sampler

TISCH High Volume Air Sampler, HVS Model TE-5170*

Calibration Kit

TISCH Model TE-5025A*

1-Hour TSP

Portable Dust Meter

Sibata LD-3B Laser Dust monitor Particle Mass Profiler & Counter*

* Instrument was used in the Reporting Period and the calibration certificate could be referred in Appendix F.

 

Wind Data Monitoring Equipment

3.5.4                 According to the approved EM&A Manual, wind data monitoring equipment shall also be provided and set up for logging wind speed and wind direction near the dust monitoring locations.  The equipment installation location shall be proposed by the ET and agreed with the IEC.  For installation and operation of wind data monitoring equipment, the following points shall be observed:

1)          The wind sensors should be installed 10 m above ground so that they are clear of obstructions or turbulence caused by buildings.

2)          The wind data should be captured by a data logger. The data shall be downloaded for analysis at least once a month.

3)          The wind data monitoring equipment should be re-calibrated at least once every six months.

4)          Wind direction should be divided into 16 sectors of 22.5 degrees each.

 

3.5.5                 ET has liaised with the landlords of the successful granted HVS installation premises.  However, the owners rejected to provide premises for wind data monitoring equipment installation.

 

3.5.6                 Under this situation, the ET proposed alternative methods to obtain representative wind data.  Meteorological information as extracted from ¡§the Hong Kong Observatory Ta Kwu Ling Station¡¨ is alternative method to obtain representative wind data.  For Ta Kwu Ling Station, it is located nearby the Project site.  Moreover, this station is located at 15m above mean sea level while its anemometer is located at 13m above the existing ground which in compliance with the general setting up requirement.  Furthermore, this station also can be to provide the humidity, rainfall, and air pressure and temperature etc. meteorological information.  In Hong Kong of a lot development projects, weather information extracted from Hong Kong Observatory is common alternative method if weather station installation not allowed.

 

Noise Monitoring

3.5.7                 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 m/s.

 

3.5.8                 Noise monitoring equipment to be used for monitoring is listed in Table 3-6.

Table 3-6         Construction Noise Monitoring Equipment

Equipment

Model

Integrating Sound Level Meter

B&K Type 2238* or Rion NL-31 or Rion NL-52*

Calibrator

B&K Type 4231* or Cesva CB-5 or Rion NC-74*

Portable Wind Speed Indicator

Testo Anemometer

* Instrument was used in the Reporting Period and the calibration certificate could be referred in Appendix F.

 

3.5.9                 Sound level meters listed above comply with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications, as recommended in TM issued under the NCO.  The acoustic calibrator and sound level meter to be used in the impact monitoring will be calibrated yearly.

 

Water Quality Monitoring

3.5.10             DO and water temperature should be measured in-situ by a DO/temperature meter. The instrument should be portable and weatherproof using a DC power source. It should have a membrane electrode with automatic temperature compensation complete with a cable. The equipment should be capable of measuring:

                 a DO level in the range of 0-20 mg/l and 0-200% saturation; and

                 a temperature of between 0 and 45 degree Celsius.

 

3.5.11             A portable pH meter capable of measuring a range between 0.0 and 14.0 should be provided to measure pH under the specified conditions accordingly to the APHA Standard Methods.

 

3.5.12             The instrument should be portable and weatherproof using a DC power source. It should have a photoelectric sensor capable of measuring turbidity between 0-1000 NTU.

 

3.5.13             A portable, battery-operated echo sounder or tape measure will be used for the determination of water depth at each designated monitoring station as appropriate.

 

3.5.14             A water sampler e.g. Kahlsico Water Sampler, which is a transparent PVC cylinder with capacity not less than 2 litres, will be used for water sampling if water depth over than 0.5m.   For sampling from very shallow water depths e.g. <0.5 m, water sample collection will be directly from water surface below 100mm use sampling plastic bottle to avoid inclusion of bottom sediment or humus.  Moreover, Teflon/stainless steel bailer or self-made sampling buckets maybe used for water sampling.  The equipment used for sampling will be depended the sampling location and depth situations.

 

3.5.15             Water samples for laboratory measurement of SS will be collected in high density polythene bottles, packed in ice (cooled to 4 ºC without being frozen), and delivered to the laboratory in the same day as the samples were collected.

 

3.5.16             Analysis of suspended solids should be carried out in a HOKLAS or other accredited laboratory. Water samples of about 1L should be collected at the monitoring stations for carrying out the laboratory suspended solids determination.  The SS determination work should start within 24 hours after collection of the water samples. The SS analyses should follow the APHA Standard Methods 2540D with Limit of Reporting of 2 mg/L.

 

3.5.17             Water quality monitoring equipment used in the impact monitoring is listed in Table 3-7.  Suspended solids (SS) analysis is carried out by a local HOKLAS-accredited laboratory, namely ALS Technichem (HK) Pty Ltd.

Table 3-7         Water Quality Monitoring Equipment

Equipment

Model

Water Depth Detector

Eagle Sonar or tape measures

Water Sampler

A 2-litre transparent PVC cylinder with latex cups at both ends or teflon/stainless steel bailer or self-made sampling bucket

Thermometer & DO meter

YSI Professional Plus /YSI PRO20 Handheld Dissolved Oxygen Instrument / YSI 550A Multifunctional Meter*/ YSI Professional DSS

pH meter

YSI Professional Plus / AZ8685 pH pen-style meter*/ YSI 6820/ 650MDS/ YSI Professional DSS

Turbidimeter

Hach 2100Q*/ YSI 6820/ 650MDS/ YSI Professional DSS

Sample Container

High density polythene bottles (provided by laboratory)

Storage Container

¡¥Willow¡¦ 33-liter plastic cool box with Ice pad

* Instrument was used in the Reporting Period and the calibration certificate could be referred in Appendix F.

 

3.6                       Monitoring Methodology

1-hour TSP Monitoring

3.6.1                 The 1-hour TSP monitor was a brand named ¡§Sibata LD-3B 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 90o 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.

 

3.6.2                 The 1-hour TSP meter is used within the valid period as follow manufacturer¡¦s Operation and Service Manual.

 

24-hour TSP Monitoring

3.6.3                 The equipment used for 24-hour TSP measurement is Tisch Environmental, Inc. Model TE-5170 TSP high volume air sampling system, 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

 

3.6.4                 The HVS is operated and calibrated on a regular basis in accordance with the manufacturer¡¦s instruction using Tisch Calibration Kit Model TE-5025A.  Calibration would carry out in two month interval.

 

3.6.5                 24-hour TSP is collected by the ET on filters of HVS and quantified by a local HOKLAS accredited laboratory, ALS Technichem (HK) Pty Ltd (ALS), upon receipt of the samples.  The ET keep all the sampled 24-hour TSP filters in normal air conditioned room conditions, i.e. 70% RH (Relative Humidity) and 25oC, for six months prior to disposal.

 

Noise Monitoring

3.6.6                 Noise measurements were taken in terms of the A-weighted equivalent sound pressure level (Leq) measured in decibels dB(A). Supplementary statistical results (L10 and L90) were also obtained for reference.

 

3.6.7                 During the monitoring, all noise measurements would be performed with the meter set to FAST response and on the A-weighted equivalent continuous sound pressure level (Leq).  Leq(30min) in six consecutive Leq(5min) measurements will use as the monitoring parameter for the time period between 0700-1900 hours on weekdays; and also Leq(15min) in three consecutive Leq(5min) measurements would be used as monitoring parameter for other time periods (e.g. during restricted hours), if necessary.

 

3.6.8                 Prior of noise measurement, the accuracy of the sound level meter is checked using an acoustic calibrator generating a known sound pressure level at a known frequency.  The checking is performed before and after the noise measurement.

 

Water Quality

3.6.9                 Water quality monitoring is conducted at the designated or alternative locations. The sampling procedures with the in-situ monitoring are presented as below:

 

Sampling Procedure

3.6.10             A Digital Global Positioning System (GPS) is used to identify the designated monitoring stations prior to water sampling.  A portable, battery-operated echo sounder or tape measurement is used for the determination of water depth at each station.  At each station, water sample would be collected from 0.1m below water surface or the water surface to prevent the river bed sediment for stirring.

 

3.6.11             The sample container will be rinsed with a portion of the water sample.  The water sample then will be transferred to the high-density polythene bottles as provided by the laboratory, labeled with a unique sample number and sealed with a screw cap.

 

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

 

3.6.13             A ¡¥Willow¡¦ 33-liter plastic cool box packed with ice will be used to preserve the water samples prior to arrival at the laboratory for chemical determination.  The water temperature of the cool box is maintained at a temperature as close to 40C as possible without being frozen.  Samples collected are delivered to the laboratory upon collection.

 

In-situ Measurement

3.6.14             YSI PRO20 Handheld Dissolved Oxygen Instrument or YSI Professional DSS is used for water in-situ measures, which automates the measurements and data logging of temperature, dissolved oxygen and dissolved oxygen saturation. 

 

3.6.15             A portable AZ Model 8685 pH pen-style meter or YSI Professional DSS is used for in-situ pH measurement.  The pH meter is capable of measuring pH in the range of 0 ¡V 14 and readable to 0.1.

 

3.6.16             A portable Hach 2100Q Turbidimeter or YSI Professional DSS is used for in-situ turbidity measurement. The turbidity meter is capable of measuring turbidity in the range of 0 ¡V 1000 NTU. 

 

3.6.17             All in-situ measurement equipment are calibrated by HOKLAS accredited laboratory of three month interval.

 

Laboratory Analysis

3.6.18             All water samples analyzed Suspended Solids (SS) will be carried out by a local HOKLAS-accredited testing laboratory (ALS Technichem (HK) Pty Ltd HOKLAS registration no. 66).  SS determination using APHA Standard Methods 2540D as specified in the EM&A Manual will start within 48 hours of water sample receipt.

 

3.7                       Equipment Calibration

3.7.1                 Calibration of the HVS is performed upon installation and thereafter at bimonthly intervals in accordance with the manufacturer¡¦s instruction using the certified standard calibrator (TISCH Model TE-5025A).  Moreover, the Calibration Kit would be calibrated annually. The calibration data are properly documented and the records are maintained by ET for future reference.

 

3.7.2                 The 1-hour TSP meter was calibrated by the supplier prior to purchase.  Zero response of the equipment would be checked before and after each monitoring event.  Annually calibration with the High Volume Sampler (HVS) in same condition would be undertaken by the Laboratory.

 

3.7.3                 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.

 

3.7.4                 All water quality monitoring equipment would be calibrated by HOKLAS accredited laboratory of three month intervals.

 

3.7.5                 The calibration certificates of all monitoring equipment used for the impact monitoring program in the Reporting Period and the HOKLAS accredited certificate of laboratory are attached in Appendix F.   

 

3.8                       Derivation of Action/Limit (A/L) Levels

3.8.1                 The baseline results form the basis for determining the environmental acceptance criteria for the impact monitoring.  According to the approved Environmental Monitoring and Audit Manual, the air quality, construction noise and water quality criteria were set up, namely Action and Limit levels are listed in Tables 3-8, 3-9 and 3-10.

Table 3-8        Action and Limit Levels for Air Quality Monitoring

Monitoring Station

Action Level (mg /m3)

Limit Level (mg/m3)

1-hour TSP

24-hour TSP

1-hour TSP

24-hour TSP

AM1b

265

143

500

260

AM2

268

149

AM3

269

145

AM4b

267

148

AM5a

268

143

AM6

269

148

AM7b

275

156

AM8

269

144

AM9b

271

151

 

 

Table 3-9         Action and Limit Levels for Construction Noise

Monitoring Location

Action Level

Limit Level in dB(A)

Time Period: 0700-1900 hours on normal weekdays

NM1, NM2a, NM3, NM4, NM5, NM6, NM7, NM8, NM9, NM10

When one or more documented complaints are received

75 dB(A)Note 1 & Note 2

Note 1:  Acceptable Noise Levels for school should be reduced to 70 dB(A) and65 dB(A) during examination period

Note 2:  If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the NCA have to be followed.

 

Table 3-10       Action and Limit Levels for Water Quality

Parameter

Performance criteria

Monitoring Location

WM1

WM2A(a)

WM2B

WM3x

WM4

DO (mg/L)

Action Level

(*)4.23

(**)4.00

(*)4.74

(**)4.00

(*)4.14

Limit Level

(#)4.19

(**)4.00

(#)4.60

(**)4.00

(#)4.08

Turbidity (NTU)

Action Level

51.3

24.9

11.4

13.4

35.2

AND  120% of upstream control station of the same day

Limit Level

67.6

33.8

12.3

14.0

38.4

AND  130% of upstream control station of the same day

SS (mg/L)

Action Level

54.5

14.6

11.8

12.6

39.4

AND  120% of upstream control station of the same day

Limit Level

64.9

17.3

12.4

12.9

45.5

AND  130% of upstream control station of the same day

Remarks:

(*)      The Proposed Action Level of Dissolved Oxygen is adopted to be used 5%-ile of baseline data

(**)  The Proposed Action & Limit Level of Dissolved Oxygen is used 4mg/L

(#)     The Proposed Limit Level of Dissolved Oxygen is adopted to be used 1%-ile of baseline data

 

3.8.2                 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 G.

 

3.9                       Data Management and Data QA/QC Control

3.9.1                 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 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.

 

3.9.2                 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, construction works under the project have been commenced in Contracts 2, 3, 5, 6, 7 and Contract SS C505. Hence, air quality monitoring was performed at all designated locations.

 

4.1.2                 The air quality monitoring schedule is presented in Appendix H and the monitoring results are summarized in the following sub-sections.

 

4.2                       Air Quality Monitoring Results in Reporting Month

4.2.1                 In the Reporting Period, a total of 147 events of 1-hour TSP and 49 events 24-hours TSP monitoring were carried out and the monitoring results are summarized in Tables 4-1 to 4-9.   The detailed 24-hour TSP monitoring data are presented in Appendix I and the relevant graphical plots are shown in Appendix J.

Table 4-1         Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM1b

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

1-Aug-16

88

2-Aug-16

13:19

36

25

24

6-Aug-16

64

8-Aug-16

13:18

82

77

69

12-Aug-16

40

13-Aug-16

13:00

47

46

44

18-Aug-16

23

19-Aug-16

9:37

81

76

78

24-Aug-16

52

25-Aug-16

9:11

72

76

81

30-Aug-16

91

31-Aug-16

9:16

97

99

93

Average

(Range)

60

(23 ¡V 91)

Average

(Range)

67

(24 ¡V 99)

 

Table 4-2         Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM2

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

1-Aug-16

131

2-Aug-16

13:12

28

26

27

6-Aug-16

85

8-Aug-16

9:38

65

74

76

12-Aug-16

62

13-Aug-16

13:03

47

49

50

18-Aug-16

37

19-Aug-16

9:31

78

83

75

24-Aug-16

142

25-Aug-16

9:13

83

84

77

30-Aug-16

146

31-Aug-16

9:27

92

101

97

Average

(Range)

101

(37 ¡V 146)

Average

(Range)

67

(26 ¡V 101)

 

Table 4-3         Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM3

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

1-Aug-16

135

2-Aug-16

13:03

40

26

36

6-Aug-16

142

8-Aug-16

9:26

79

79

71

12-Aug-16

100

13-Aug-16

13:06

50

50

50

18-Aug-16

21

19-Aug-16

9:24

81

83

80

24-Aug-16

66

25-Aug-16

9:19

87

87

83

30-Aug-16

122

31-Aug-16

13:03

92

82

95

Average

(Range)

98

 (21 ¡V 142)

Average

(Range)

70

 (26 ¡V 95)

Table 4-4         Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM4b

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

3-Aug-16

20

4-Aug-16

9:23

43

43

38

9-Aug-16

59

10-Aug-16

9:19

38

47

38

15-Aug-16

29

16-Aug-16

9:21

57

72

72

20-Aug-16

45

22-Aug-16

10:17

58

59

50

26-Aug-16

53

27-Aug-16

9:27

82

84

80

Average

(Range)

41

(20 ¡V 59)

Average

(Range)

57

(38 ¡V 84)

 

Table 4-5         Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM5a

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

3-Aug-16

34

4-Aug-16

9:26

44

35

32

9-Aug-16

63

10-Aug-16

9:26

43

39

47

15-Aug-16

25

16-Aug-16

9:29

65

54

49

20-Aug-16

43

22-Aug-16

10:19

63

63

61

26-Aug-16

83

27-Aug-16

9:22

89

82

80

Average

(Range)

50

(25 ¡V 83)

Average

(Range)

56

(32 ¡V 89)

 

Table 4-6         Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM6

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

3-Aug-16

36

4-Aug-16

9:32

39

31

27

9-Aug-16

104

10-Aug-16

9:33

44

49

50

15-Aug-16

60

16-Aug-16

9:37

70

62

64

20-Aug-16

93

22-Aug-16

10:00

58

60

63

26-Aug-16

134

27-Aug-16

9:15

88

91

87

Average

(Range)

85

(36 ¡V 134)

Average

(Range)

59

(27 ¡V 91)

 

Table 4-7         Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM7b

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

3-Aug-16

32

4-Aug-16

9:34

111

107

131

9-Aug-16

75

10-Aug-16

9:39

53

43

44

15-Aug-16

38

16-Aug-16

9:09

99

79

74

20-Aug-16

45

22-Aug-16

12:51

83

87

60

26-Aug-16

61

27-Aug-16

9:21

122

116

134

Average

(Range)

50

(32 ¡V 75)

Average

(Range)

90

(43 ¡V 134)

Table 4-8         Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM8

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

3-Aug-16

20

4-Aug-16

13:06

99

94

104

9-Aug-16

35

10-Aug-16

13:03

53

48

52

15-Aug-16

22

16-Aug-16

13:06

51

46

72

20-Aug-16

34

22-Aug-16

9:11

67

55

72

26-Aug-16

61

27-Aug-16

13:06

122

118

132

Average

(Range)

34

(20 ¡V 61)

Average

(Range)

79

(46 -132)

 

Table 4-9         Summary of 24-hour and 1-hour TSP Monitoring Results ¡V AM9b

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

1-Aug-16

72

2-Aug-16

13:15

39

39

39

6-Aug-16

95

8-Aug-16

13:08

47

44

40

12-Aug-16

47

13-Aug-16

13:33

52

51

48

18-Aug-16

25

19-Aug-16

12:51

50

47

45

24-Aug-16

45

25-Aug-16

9:26

100

63

57

30-Aug-16

37

31-Aug-16

12:53

214

180

156

Average

(Range)

54

(25 ¡V 95)

Average

(Range)

73

(39 ¡V 214)

 

4.2.2                 As shown in Tables 4-1 to 4-9, 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 the impact monitoring days are summarized in Appendix K.

 


 

5                             Construction Noise Monitoring

5.1                       General

5.1.1                 In the Reporting Period, construction works under the project have been commenced in Contracts 2, 3, 5, 6, 7 and Contract SS C505 and noise monitoring was performed at all designated locations.

 

5.1.2                 The noise monitoring schedule is presented in Appendix H and the monitoring results are summarized in the following sub-sections.

 

5.2                       Noise Monitoring Results in Reporting Month

5.2.1                 In the Reporting Period, a total of 45 event noise measurements were carried out at the designated locations.  The sound level meter was set in 1m from the exterior of the building façade including noise monitoring locations NM1, NM3, NM4, NM5, NM6, NM7, NM8 and NM9.  Therefore, no façade correction (+3 dB(A)) is added according to acoustical principles and EPD guidelines.  However, free-field status were performed at NM2a and NM10 and façade correction (+3 dB(A)) has added according to the requirement in this month.  The noise monitoring results at the designated locations are summarized in Tables 5-1 and 5-2.  The detailed noise monitoring data are presented in Appendix I and the relevant graphical plots are shown in Appendix J.

Table 5-1         Summary of Construction Noise Monitoring Results

Construction Noise Level (Leq30min), dB(A)

Date

NM1

NM2a(*)

NM8

NM9

NM10(*)

2-Aug-16

54

68

57

61

62

8-Aug-16

53

71

59

62

61

19-Aug-16

57

70

58

63

61

25-Aug-16

62

73

55

61

64

31-Aug-16

55

72

57

65

64

Limit Level

75 dB(A)

Remarks

(*)    façade correction (+3 dB(A) is added according to acoustical principles and EPD guidelines

Table 5-2         Summary of Construction Noise Monitoring Results

Construction Noise Level (Leq30min), dB(A)

 

Date

NM3

NM4

NM5

NM6

NM7

 

4-Aug-16

61

62

55

55

65

 

10-Aug-16

58

60

59

56

61

 

16-Aug-16

57

58

55

61

63

 

22-Aug-16

61

63

51

59

58

 

Limit Level

75 dB(A)

 

 

54

 

5.2.2                 As shown in Tables 5-1 and 5-2, the noise level measured at all designated monitoring locations were below 75dB(A).  Furthermore, there was no noise complaints (Action Level exceedance) received by the RE, CEDD, Architect/AR/ and the Contractors in the Reporting Period.  Therefore, no Action or Limit Level exceedance was triggered and no corrective action was required.

 

 

 


 

6                             Water Quality Monitoring

6.1                       General

6.1.1                 In the Reporting Period, construction works under the project has been commenced in Contracts 2, 3, 5, 6, 7 and Contract SS C505 and water quality monitoring was performed at all designated locations.  The water quality monitoring schedule is presented in Appendix H.  The monitoring results are summarized in the following sub-sections.

 

6.2                       Results of Water Quality Monitoring

6.2.1                 In the Reporting Period, a total of fourteen (14) sampling days was scheduled to carry out for all designated locations with their control stations.  Since exceedances were recorded at WM2A(a) and WM2B, according to ¡§Event and Action Plan¡¨ stipulation, five (5) and four (4) additional water quality monitoring days were conducted for WM2A(a) and WM2B respectively and its control stations in the reporting period.

 

6.2.2                 The key monitoring parameters including Dissolved Oxygen, Turbidity and Suspended Solids are summarized in Tables 6-1 to 6-5.  Breaches of water quality monitoring criteria are shown in Table 6-6.  Detailed monitoring database including in-situ measurements and laboratory analysis data are shown in Appendix I and the relevant graphical plot are shown in Appendix J.

Table 6-1         Water Quality Monitoring Results Associated of Contracts 2 and 3

Date

Dissolved Oxygen

(mg/L)

Turbidity

(NTU)

Suspended Solids

(mg/L)

WM4

WM4-CA

WM4-CB

WM4

WM4-CA

WM4-CB

WM4

WM4-CA

WM4-CB

2-Aug-16

7.4

7.4

6.8

35.0

20.0

29.0

29.5

16.5

22.0

4-Aug-16

7.0

7.4

6.2

119.0

100.9

99.7

114.5

98.0

80.5

6-Aug-16

7.2

7.2

6.7

27.0

28.4

11.3

20.5

24.5

8.0

8-Aug-16

7.3

7.3

7.2

15.8

9.4

10.6

13.5

6.0

7.0

10-Aug-16

6.9

7.7

7.4

37.4

30.9

34.6

25.5

18.5

30.0

12-Aug-16

7.2

7.5

6.7

35.1

10.6

19.3

32.0

10.0

13.5

16-Aug-16

7.0

7.4

6.1

35.0

8.1

18.6

32.0

3.0

15.0

18-Aug-16

7.2

7.4

6.7

35.7

24.2

37.5

37.0

20.0

29.0

20-Aug-16

7.2

7.7

7.1

34.0

13.9

10.6

35.0

3.0

10.0

22-Aug-16

7.1

7.0

7.0

15.3

18.7

29.1

15.0

5.5

20.5

24-Aug-16

7.5

7.7

7.0

23.5

5.9

11.4

28.5

6.0

12.5

26-Aug-16

7.4

7.4

7.2

18.1

8.1

12.0

19.5

9.0

12.0

29-Aug-16

7.8

7.9

7.2

29.4

8.6

26.0

22.5

8.0

14.5

31-Aug-16

11.2

9.9

9.0

11.2

9.9

9.0

10.0

8.5

8.5

 

Table 6-2         Water Quality Monitoring Results Associated of Contracts 5, 6 and SS C505

Date

Dissolved Oxygen

(mg/L)

Turbidity

(NTU)

Suspended Solids

(mg/L)

WM1

WM1- Control

WM1

WM1- Control

WM1

WM1- Control

2-Aug-16

7.0

7.2

198.0

170.0

164.0

138.5

4-Aug-16

7.3

6.9

16.0

12.9

18.5

12.0

6-Aug-16

6.9

7.5

44.8

13.2

47.0

10.0

8-Aug-16

7.3

7.7

12.8

9.1

11.0

4.5

10-Aug-16

7.2

7.0

309.5

308.5

283.0

287.5

12-Aug-16

7.3

7.3

14.8

11.2

13.0

10.0

16-Aug-16

6.7

7.1

50.8

21.3

37.0

16.0

18-Aug-16

7.0

6.8

182.0

230.0

151.5

188.5

20-Aug-16

7.0

7.1

50.4

18.1

52.5

16.0

22-Aug-16

7.1

6.9

33.9

15.2

19.0

13.0

24-Aug-16

7.2

7.2

13.7

11.3

11.5

7.0

26-Aug-16

7.2

7.6

21.8

10.5

24.5

8.0

29-Aug-16

7.2

7.5

17.9

11.8

20.0

6.0

31-Aug-16

7.6

8.2

11.5

7.3

8.5

4.0

Table 6-3         Water Quality Monitoring Results Associated only Contract 6

Date

Dissolved Oxygen

(mg/L)

Turbidity

(NTU)

Suspended Solids

(mg/L)

WM2A(a)

WM2A- Cx

WM2B

WM2B- C

WM2A(a)

WM2A- Cx

WM2B

WM2B- C

WM2A(a)

WM2A- Cx

WM2B

WM2B- C

2-Aug-16

7.0

7.8

7.4

7.5

48.4

17.9

26.8

10.3

55.0

13.5

22.0

5.5

3-Aug-16#

--

--

--

--

203.5

4.0

10.4

3.8

170.0

<2

15.0

<2

4-Aug-16

7.1

7.6

7.9

6.8

24.7

4.1

11.1

3.3

23.5

2.5

21.5

<2

5-Aug-16#

--

--

--

--

24.6

5.3

--

--

14.0

4.0

--

--

6-Aug-16

6.6

7.4

7.6

6.5

24.4

7.0

11.1

3.7

13.5

2.0

10.0

<2

8-Aug-16

6.8

7.5

7.3

6.7

19.8

8.7

9.8

8.6

11.0

<2

5.0

<2

10-Aug-16

7.0

7.8

7.0

6.6

42.8

33.8

51.3

41.1

41.0

22.0

61.0

68.0

11-Aug-16#

--

--

--

--

21.1

8.6

11.3

3.1

34.0

12.0

11.0

2.0

12-Aug-16

7.2

7.4

7.1

6.6

22.5

10.3

11.4

7.6

33.5

13.5

9.5

8.0

16-Aug-16

7.4

7.4

7.5

6.6

24.5

6.8

10.3

3.8

14.0

3.0

9.0

2.0

18-Aug-16

7.2

7.4

7.4

6.0

357.5

26.7

>999

14.2

244.0

20.0

1375.0

2.0

19-Aug-16#

--

--

--

--

265.5

62.1

23.7

2.9

336.0

19.0

15.0

<2

20-Aug-16

6.8

7.5

7.0

6.5

547.5

6.6

10.4

3.5

335.5

4.5

11.0

<2

22-Aug-16

7.2

7.7

7.7

8.1

374.5

9.1

>999

3.7

248.0

8.0

1720.0

4.0

23-Aug-16#

--

--

--

--

24.7

5.0

8.1

3.6

35.0

9.0

15.0

<2

24-Aug-16

6.9

7.5

7.0

6.7

23.8

10.6

11.3

5.9

22.5

7.5

16.0

9.0

26-Aug-16

7.1

7.6

7.8

6.7

23.1

10.5

7.7

7.0

14.5

5.5

7.0

4.5

29-Aug-16

7.2

7.6

7.4

6.9

24.1

20.9

7.4

3.4

30.5

31.5

4.5

<2

31-Aug-16

7.4

7.9

8.1

6.7

24.7

15.8

6.9

2.1

25.0

9.5

7.0

<2

 

Remarks:

bold with underline indicated Limit Level exceedance

# Additional water quality monitoring at the exceeded location(s) due to two consecutive monitoring days indicated Limit Level exceedance.

 

Table 6-4         Water Quality Monitoring Results Associated Contracts 2 and 6

Date

Dissolved Oxygen

(mg/L)

Turbidity

(NTU)

Suspended Solids

(mg/L)

WM3x

WM3- Control

WM3x

WM3- Control

WM3x

WM3- Control

2-Aug-16

7.1

7.7

243.0

260.0

229.5

339.0

4-Aug-16

7.2

6.8

>999

>999

1470.0

1270.0

6-Aug-16

6.6

6.6

21.2

18.8

23.5

23.0

8-Aug-16

7.0

6.6

20.7

19.1

23.0

32.5

10-Aug-16

6.9

6.6

51.7

75.5

44.5

100.5

12-Aug-16

7.0

6.5

8.1

9.3

9.0

17.0

16-Aug-16

6.8

6.4

17.3

21.1

13.5

21.5

18-Aug-16

6.8

6.7

148.0

153.0

130.5

309.5

20-Aug-16

7.0

6.8

93.8

87.7

103.5

118.0

22-Aug-16

6.7

6.5

107.0

>999

104.0

13100.0

24-Aug-16

7.8

6.3

12.3

18.4

16.0

64.0

26-Aug-16

7.6

6.6

6.7

12.1

8.0

20.0

29-Aug-16

7.1

7.1

12.9

11.9

15.0

20.5

31-Aug-16

6.3

6.8

7.9

7.8

15.0

14.5

 

Table 6-5      Breaches of Water Quality Monitoring Criteria in Reporting Period

Location

Dissolved Oxygen

Turbidity

Suspended Solids

Total Exceedance

Action

Limit

Action

Limit

Action

Limit

Action

Limit

WM1

0

0

0

0

0

0

0

0

WM2A(a)

0

0

1

6

0

13

1

19

WM2B

0

0

1

4

0

7

1

11

WM3x

0

0

0

0

0

0

0

0

WM4

0

0

0

0

0

0

0

0

No of Exceedance

0

0

2

10

0

20

2

30

 

6.2.3                 In this Reporting Period, a total of thirty (30) Limit Level (LL) exceedances and two (2) Action Level (AL) exceedances, namely twelve (12) AL/LL exceedance of turbidity and twenty (20) LL exceedances of Suspended Solids were recorded for the Project and they are summarized in Table 6-5.

 

6.2.4                 NOE was issued to relevant parties upon confirmation of the monitoring result.  The cause of exceedance is summarized in Table 6-6 accordance to investigation findings and the detailed investigation reports for the exceedances are attached in Appendix N.

 

Table 6-6      Summary of Water Quality Exceedance in the Reporting Period

Date of Exceedance

Location

Exceeded Parameter

Cause of Water Quality Exceedance In Brief

2, 3 and 4 August 2016

WM2A(a)

(C6)

NTU &SS

Typhoon No.8 was hoisted on 2 August 2016 morning and heavy rain was recorded on 2 and 3 August 2016.  In order to identify the source of turbid water, the monitoring team subsequently inspected the alignment of the river course of Bridge D.  On 2 and 3 August 2016, it was observed that water releasing from the rubber dam after heavy rain and the rubber dam was not belong to C6. The water flow of the river became very vigorous and stirred up the loose sediment at the river bed.  It is concluded that the exceedances on 2 and 3 August 2016 were related to vigorous flow disturbing the sediment at the river when water releasing from the rubber dam.  For exceedances on 4 August 2016, it is considered the exceedances were related to the unknown source of turbid water seeping out from the river bed.

10, 11 and 12 August 2016

WM2A(a)

(C6)

NTU &SS

According to the Hong Kong Observatory, there was heavy rainstorm on 10 August 2016 and occasionally shower on 11 and 12 August 2016. In order to identify the source of turbid water, the monitoring team subsequently inspected the alignment of the river course of Bridge D.  On 10 August 2016, turbid water was observed throughout the stream course due to vigorous flow and stirred up of the sediment.  On 11 and 12 August, unknown source of turbid water seeping out from the river bed was observed.  In our investigation, it is considered that the exceedance was not likely caused by the Project.

2, 3 and 4 August 2016

WM2B

 (C6)

NTU &SS

Typhoon No.8 was hoisted on 2 August 2016 morning and heavy rain was recorded on 2 and 3 August 2016.  According to the site observations from the monitoring team on 2, 3 and 4 August 2016, the water flow in the channel was very vigorous due to heavy rain and it stirred up some silt and sediment at the river bed.  Moreover, there was trails of muddy water flowing from the adjacent road into the channel resulted from rain.  In our investigation, it is considered that the exceedances were due to the disturbance of silt and sediment during sampling and runoff from road and not likely caused by the Project.

10 August 2016

WM2B

(C6)

NTU &SS

According to the site observations from the monitoring team on 10 August 2016, the water flow in the channel as well as WM2B and WM2B-c was very vigorous due to heavy rain and turbid water was observed throughout the channel.  Moreover, there was trails of turbid water flowing from the adjacent road into the channel resulted from rain. In our investigation, it is considered that the exceedance was due rainstorm and runoff from road and not likely caused by the Project.

18, 19 and 22 August 2016

WM2B

(C6)

NTU &SS

To be reporting in next reporting month.

23 and 24  August 2016

WM2B

(C6)

NTU &SS

According to the site observations from the monitoring team on 23 and 24 August 2016, the water at WM2B was visually clear though some obvious silt and sediment was found at the river bed.  No abnormality was observed by the monitoring Team.  Since the sampling was conducted at shallow water (water depth <0.03m), it is considered that the exceedances were due to the disturbance of silt and sediment during sampling and not likely caused by the Project.

18, 19, 20, 22 August 2016

WM2A(a)

(C6)

NTU &SS

According to the HKO, there was rainstorm recorded on 18 to 22 August 2016.  Due to continuous rainfall, large amount of surface muddy runoff generated from the surrounding environment has been flowing into existing stream.  The muddy runoff resulted in slurry and mud accumulated in the river bed.  According to the photo recorded and monitoring data, the water quality at control station WM2A-C was also affected by the rainfall, particularly on 18 and 19 August 2016.  In our investigation, it is considered the exceedance was due to surface runoff and mud from the surrounding environmental under rainstorm and unlikely caused by the works under the project.

23, 24 and 31 August 2016

WM2A(a)

(C6)

NTU &SS

In our investigation, the water mitigation measures implemented on site was in order and there were no rain recorded on 23, 24 and 31 August 2016 and therefore muddy runoff from the site was not likely to occur.  It is considered the exceedances were due to natural variation and unlikely caused by the works under the project.

 

 


 

7                             Waste Management

7.1                       General Waste Management

7.1.1                 Waste management was carried out in accordance with the Waste Management Plan (WMP) for each contract.

 

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;

l General Refuse; and

l Excavated Soil.

 

7.2.2                 The quantities of waste for disposal in this Reporting Period are summarized in Tables 7-1 and 7-2 and the Monthly Summary Waste Flow Table is shown in Appendix L.  Whenever possible, materials were reused on-site as far as practicable.

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

Type of Waste

Contract 2

Contract 3

Contract 5

Contract 6

Contract 7

Contract SS C505

Total Quantity

Qty.

Disposal location

Qty.

Disposal location

Qty.

Disposal location

Qty.

Disposal location

Qty.

Disposal location

Qty.

Disposal location

C&D Materials (Inert)

(in '000m3)

88.4693

--

0.582

--

0

--

45.652

--

0.464

--

4.247

--

139.4143

Reused in this Contract (Inert)

(in '000 m3)

0.1268

--

0

--

0

--

6.653

--

0

--

4.182

--

10.9618

Reused in other Contracts/ Projects (Inert)

(in '000 m3)

27.0545

C6/ NENT# & other projects approved by the ER

0

--

0

--

5.933

C5 & other projects approved by the ER

0

--

0

--

32.9875

Disposal as Public Fill (Inert)

(in '000 m3)

61.2879

Tuen Mun 38

0.494

Tuen Mun 38

0

--

33.066

Tuen Mun 38

0.464

Tuen Mun 38

0.065

TKO 137

95.3769

Remark #: The C&D materials were delivered to NENT for reuse by laying cover of the landfilling area.

 

Table 7-2        Summary of Quantities of C&D Wastes for the Project

Type of Waste

Contract 2

Contract 3

Contract 5

Contract 6

Contract 7

Contract SS C505

Total

Quantity

Qty.

Disposal location

Qty.

Disposal location

Qty.

Disposal location

Qty.

Disposal location

Qty.

Disposal location

Qty.

Disposal location

Recycled Metal (¡¥000kg) #

23.0

-

0

-

0

--

0

--

0

--

242.37

Licensed collector

265.37

Recycled Paper / Cardboard Packing (¡¥000kg) #

0

-

0

-

0

--

0

--

0.03

--

0.36

--

0.39

Recycled Plastic (¡¥000kg) #

0

--

0.001

-

0

--

0

--

0.001

--

0.025

--

0.001#+0.026

Chemical Wastes (¡¥000kg) #

4.9280

Licensed collector

0

-

0

--

0

--

0

--

0

--

4.928

General Refuses (¡¥000m3)

0.1482

NENT

0.105

NENT

0.02

NENT

0.110

NENT

0

--

0.228

NENT

0.6112

Remark #: Unit of recycled metal, recycled paper/ cardboard packing, recycled plastic and chemical waste for Contract 3 was in (¡¥000m3).


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 2

8.2.1                 In the Reporting Period, joint site inspection for Contract 2 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 5, 12, 19 and 26 August 2016.  No non-compliance was noted.

 

8.2.2                 The findings / deficiencies of Contract 2 that observed during the weekly site inspection are listed in Table 8-1.

Table 8-1           Site Observations for Contract 2

Date

Findings / Deficiencies

Follow-Up Status

5 August 2016

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

12 August 2016

Ÿ  It was reminded that proper maintenance or replacement should be provided for the broken water to prevent accumulation of stagnant water.  Moreover, stagnant water should be removed after rainfall to prevent mosquito breeding.

Ÿ  Not required for reminder.

19 August 2016

Ÿ  It was reminded that stagnant water cumulated on site should be cleared to prevent mosquito breeding particularly after the rainstorm

Ÿ  Not required for reminder.

26 August 2016

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

 

Contract 3

8.2.3                 In the Reporting Period, joint site inspection for Contract 3 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 1, 8, 15, 24 and 29 August 2016.  No non-compliance was noted.

 

8.2.4                 The findings / deficiencies of Contract 3 that observed during the weekly site inspection are listed in Table 8-2.

Table 8-2           Site Observations for Contract 3

Date

Findings / Deficiencies

Follow-Up Status

1 August 2016

Ÿ  Stagnant water was observed at AC 1. The Contractor should remove the stagnant water to prevent mosquito breeding.

Ÿ  Stagnant water was removed.

8 August 2016

Ÿ  Broken water filled road barrier was observed at SA12A. The Contractor should replace the barrier to avoid accumulation of stagnant water.

Ÿ  The water filled road barrier was repaired.

 

 

Ÿ  Stagnant water was observed near SA12A. The Contractor should remove the stagnant water to prevent mosquito breeding.

Ÿ  Water pump was provided to remove the stagnant water.

15 August 2016

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

24 August 2016

Ÿ  Stagnant water was observed in two unused sedimentation tanks, the Contractor should remove the stagnant water to prevent mosquito breeding. (Tai Wo Service Road West)

Ÿ  Stagnant water was removed from the sedimentation tanks.

Ÿ  Stagnant water was observed near the sheetpile area, the Contractor should remove the stagnant water and backfill the affected area to prevent mosquito breeding. (Tai Wo Service Road West)

Ÿ  Stagnant water near sheet pile area was removed.

Ÿ  Chemical container without drip tray was observed, the Contractor should put it in the chemical storage area with drip tray underneath.

Ÿ  Chemical container was removed from site.

Ÿ  The Contractor was reminded to dispose of the waste on regular basis.  Moreover, on-site waste sorting should be implemented appropriately.

Ÿ  Not required for reminder.

29 August 2016

Ÿ  The Contractor was reminded to remove stagnant water on site regularly especially after rainy days.

Ÿ  Not required for reminder.

 

Contract 5

8.2.5                 In the Reporting Period, joint site inspection for Contract 5 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 5, 9, 16, 23 and 30 August 2016.  No non-compliance was noted.

 

8.2.6                 The findings / deficiencies of Contract 5 that observed during the weekly site inspection are listed in Table 8-3.

Table 8-3           Site Observations for Contract 5

Date

Findings / Deficiencies

Follow-Up Status

5 August 2016

Ÿ  The Contractor was reminded that mosquito control measures should be provided to prevent mosquito breeding.

Ÿ  Not required for reminder.

9 August 2016

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

16 August 2016

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

23 August 2016

Ÿ  It was reminded that the housekeeping should be improved and maintained.

Ÿ  Not required for reminder.

30 August 2016

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

 

Contract 6

8.2.7                 In the Reporting Period, joint site inspection for Contract 6 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 4, 11, 18 and 25 August 2016.  No non-compliance was noted.

 

8.2.8                 The findings / deficiencies of Contract 6 that observed during the weekly site inspection are listed in Table 8-4.

Table 8-4           Site Observations for Contract 6

Date

Findings / Deficiencies

Follow-Up Status

4 August 2016

Ÿ  Overflow of sedimentation tank in Ng Chow Road site exit was observed, the Contractor should further review the wastewater treatment facility.

Ÿ  Desilting of sedimentation tank has been carried out to ensure the tank is functional. The footpath is cleaned up and sandbag bund is maintained.

11 August 2016

Ÿ  Overflow of wheel washing bay was observed in Bridge Y, the Contractor should provide mitigation measures for the wheel washing bay and the system to avoid overflow and wheel washing water leakage.

Ÿ  Water overflowing from wheel washing bay has been diverted to wastewater treatment facility.

Ÿ  Stagnant water was found in damaged water-filled barriers and drip tray of generator in Bridge Y; and construction ground in Bridge D, mitigation measures should be provided to prevent mosquito breeding.

Ÿ  Damaged water-filled barrier has been removed; Stagnant water has been removed from drip tray; and uneven ground has been filled up to avoid ponding.

Ÿ  Exposed slope was observed in Bridge D, the Construction should be cover the slope to minimise dust generation and water run-off.

Ÿ  Exposed slope has been covered with impervious tarpaulin sheet.

Ÿ  It was reminded that proper vehicle washing facility should be provided in Bridge D site exit.

Ÿ  Not required for reminder.

18 August 2016

Ÿ  Vehicle without washing before leaving the site was observed in Ping Yuen Interchange. The Contractor should ensure all vehicles are washed off the mud from vehicle body and wheels before leaving site.

Ÿ  Vehicles have been instructed to wash their wheels properly before leaving the site.

25 August 2016

Ÿ  Dusty haul road was observed. Dust control measures or water spraying frequency should be increased for the haul road to reduce dust generation. (Bridge D)

Ÿ  Watering on haul road was provided to reduce dust generation. (Bridge D)

 

Contract SS C505

8.2.9                 In the Reporting Period, joint site inspection for Contract SS C505 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 3, 9, 17, 24 and 31 August 2016.  No non-compliance was noted.  

 

8.2.10             The findings / deficiencies of Contract SS C505 that observed during the weekly site inspection are listed in Table 8-5.

Table 8-5           Site Observations for Contract SS C505

Date

Findings / Deficiencies

Follow-Up Status

3 August 2016

Ÿ  Chemical container without drip tray was observed at PTB. The Contractor should place the container into drip tray to prevent land contamination.

Ÿ  Chemical container was placed into the drip at PTB

9 August 2016

Ÿ  Stagnant water cumulated inside the drip tray after rainstorm was observed. (Building 9 & PTB)

Ÿ  Stagnant water was removed.

Ÿ  Freestanding chemical container without drip tray was observed at PTB. Drip tray should be provided for all chemical storage on site.

Ÿ  The chemical container was removed.

Ÿ  It was reminded that mosquito control measures should be provided for the stagnant water accumulated on site to prevent mosquito breeding.

Ÿ  Not required for reminder.

17 August 2016

Ÿ  Water filled road barriers without cap was observed at Gate 1. The Contractor should provide cap for the barriers to prevent mosquito breeding.

Ÿ  Cap for the water filled road barriers was provided.

24 August 2016

Ÿ  Oil drums without drip tray were observed. Drip tray should be provided for all chemical storage on site. (Training Centre)

Ÿ  Oil drums were removed

Ÿ  Stagnant water cumulated inside the drip tray was observed after rainstorm. The Contractor should remove the water cumulated inside. (PTB)

Ÿ  Stagnant water was removed from the drip tray.

Ÿ  Stagnant water cumulated inside the lifting eyes of the concrete block was observed. The Contractor should filled the lifting eyes with sand to prevent stagnant water accumulation. (TC10)

Ÿ  The lifting eyes of the concrete block were filled with sand to avoid stagnant water accumulation.

31 August 2016

Ÿ  Stagnant water was observed near Bridge 2, Training Centre, Gate 2 and Building 9. The Contractor should remove the stagnant water to prevent mosquito breeding.

Ÿ  The stagnant water was removed.

 

Contract 7

8.2.11             In the Reporting Period, joint site inspection for Contract 7 to evaluate the site environmental performance has been carried out by the RE, IEC, ET and the Contractor on 5, 9, 16, 23 and 30 August 2016.  No non-compliance was noted.

 

8.2.12             The findings / deficiencies of Contract 7 that observed during the weekly site inspection are listed in Table 8-6.

 

Table 8-6           Site Observations for Contract 7

Date

Findings / Deficiencies

Follow-Up Status

5 August 2016

Ÿ  Stagnant water cumulated inside the lifting eyes of the concrete block was observed. Mosquito control measures should be provided to prevent mosquito breeding. (Bridge C)

Ÿ  The lifting eyes are filled up to prevent stagnant water.

9 August 2016

Ÿ  Free standing chemical containers were observed on site, the Contractor should provide drip tray for the chemical container. (Pile Cap B01)

Ÿ  The chemical containers are removed from site.

16 August 2016

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

23 August 2016

Ÿ  Smoke emission from an excavator was observed in the site area along the river, the Contractor should provide plant maintenance to avoid smoke emission.

Ÿ  Smoke emission from an excavator was observed in the site area along the river, the Contractor should provide plant maintenance to avoid smoke emission.

30 August 2016

Ÿ  Free standing chemical containers were found on site, the Contractor should provide drip tray for the chemical containers. (location: Bridge C)

Ÿ  The chemical containers were removed.

 

8.2.13             General housekeeping such as daily site tidiness and cleanliness should be maintained for all Contracts.  Furthermore, the Contractors were reminded to implement Waste Management Plan of the Project.

 

Other Contracts

8.2.14             Since the construction work of Contract 4 has not commenced, no site inspection was performed.


 

9                             Environmental Complaint and Non-Compliance

9.1                       Environmental Complaint, Summons and Prosecution

9.1.1                 In the Reporting Period, no summons and prosecution under the EM&A Programme was lodged for Contracts 2, 3, 5, 6, 7 and Contract SS C505.  However, one (1) documented environmental complaint was received in respect of the wastewater issue related to Contract 6.  The investigation reports were reviewed by IEC. The detail of the complaints and the investigation results are presented below.

 

Investigation Result for the Documented Complaints received by EPD on 22 July 2016 (Contract 2 & 6) (last Reporting Period)

 

9.1.2                 A complaint was received from EPD on 22 July 2016 related to mud and slurry discharged out of the construction sites near Sha Tau Kok Road ¡V Ma Mei Ha and Wo Keng Shan Road.  In addition to the complaint details described above, the complainant also mentioned that:-

(a)                he saw a worker washing a truck at the entrance of the construction site near Sha Tau Kok Road ¡V Ma Mei Ha and Wo Keng Shan Road and some mud or slurry was being washed to the ground outside the construction site.

(b)                he saw two trucks outside the construction site along Wo Keng Shan Road (which should be Contract 6's construction site) pouring water which carried mud from the trucks during rainy day.

(c)                 a staff from one of the construction sites told him that trucks working for Contract 2 and 6 shared the same entrance. However, he noted that some trucks working for the other Contractor did not pass the vehicle-washing basin before driving towards the entrance when leaving the site.

 

9.1.3                 The mentioned entrance (site exit) of the construction site near Sha Tau Kok Road ¡V Ma Mei Ha and Wo Keng Shan Road should be the North Portal of Contract 2 which maintained by DHK.  This entrance is shared by Contracts 2 and 6 as the complainant said in IR#1(c).  As advised by Contractor of C6 (CCKJV), there was an active works area (CR6) next to North Portal of C2 and main construction activities carried out were plants demobilization during 11-22 July 2016 and site clearance has been conducting after 23 July 2016 and throughout August 2016.  Since there were very limited vehicles getting in and out CR6, all vehicles under C6 would be preliminary washed by water spraying at CR6 site exit and then pass through the wheel washing facilities at North Portal of C2 for proper cleaning.  Upon this complaint, CCKJV has reminded the front line staffs to pay more attention on the wheel washing issue and ensure all vehicles were properly cleaned before leaving the site.  As recently advised by CCKJV, they will construct a new exit in Sha Tau Kok Road for CR6 and a wheel washing facilities would be properly implemented and maintained.  The construction for new exit is expected to be completed in end of September 2016.

 

9.1.4                 Site inspection was carried out by ET on 23 July 2016 at the concerned area including the proposed Sha Tau Kok interchange and site exit for the complaint investigation.  The observations during the site inspection are summarized below:

(a)            Wheel washing facilities were provided within the construction site of North Portal of C2.

(b)            After the vehicles were thoroughly washed, they will pass through a hard paved haul road and then reached the main site exit before leaving construction site.

(c)            A cut-off drain was provided at the exit to Sha Tau Kok Road ¡V Ma Mei Ha to divert possibly runoff and discharge from the construction area.

(d)            The main site exit was paved with concrete and clear of mud. As advised by DHK, manual water spraying was provided at the entrance of North Portal, it is not a wheel washing facilities but to clean and tidy the site entrance as needed.

(e)            No dusty materials were brought by vehicles from the site was observed.  The cleanliness condition of the site exit of North Portal within the site area was satisfactory. 

 

9.1.5                 In our investigation, no mud or dusty materials would be brought by the vehicles out of the construction site.  Therefore, it is considered that the suspected mud and slurry discharge from the works area out to Sha Tau Kok Road road ¡V Ma Mei Ha and Wo Keng Shan Road was unlikely due to the project.  However, to address the complainant¡¦s concern, DHK have immediately stopped the cleaning work at the site exit as described in IR#3(d), thus no possibly mud/ slurry could be washed to the ground on the Sha Tau Kok Road road ¡V Ma Mei Ha.

 

9.1.6                 Secondly, the complainant also mentioned that he saw two truck outside the construction site along Wo Keng Shan Road (which should be Contract 6's construction site) pouring water which carried mud from the trucks during rainy day.  In order to investigate this incident, inspection was carried out along Wo Keng Shan Road during rainy day on 4 August 2016.  It was observed that all the dump trucks leaving the sites of C6 were properly covered and no muddy water leaking come from the dump trucks.  Moreover, no trails of mud and muddy water were observed on the Wo Keng Shan Road as well as the site exits.  It is considered that the incident was unlikely due to the Project.  However, both contractors were reminded to pay special attention on this issue and ensure all dump trucks should be well covered and without water dripping before leaving the site.

 

9.1.7                 Finally, EPD noted that the road along Sha Tau Kok Road ¡V Ma Mei Ha and Wo Keng Shan Road was covered with mud during their recent inspection and the Contractors C2 and C6 were reminded to clean the concerned road as needed.  As advised by both contractors, road washing/ cleaning by water bowsers was provided along Wo Keng Shan Road to Sha Tau Kok Road in every normal working day (Mon-Sat), except for rainy day.  Moreover, road sweeping would be provided for the concerned roads twice a week.  To address the EPD¡¦s concern, the ET will keep closely inspection on the cleanliness situation on both roads during weekly site inspection.

 

Investigation Result for the Documented Complaints received by DSD on 25 August 2016 (Contract 6)

 

9.1.8                 An email was issued by DSD on 24 August 2016 to CEDD and copied to EPD attached with an inspection report stating that a lot of slurry was found from the stream besides Ping Yeung Village during their routine inspection on 19 August 2016.  The slurry was flushed down from the upstream and part of slurry was trapped by the nylon dam. Another inspection was conducted on 23 August 2016 to search for the source.  The concerned slurry was flushed away.  The Nylon Dam was loosed by the responsible department.  On the other hand, a farm owner at the upstream complained that the U-channel in his farm had always been choked with silt since the civil works started at the upstream.  200mm deep (approx.) silt/sediment was dipped at the U-channel.  It was suspected that the slurry and silt/ sediment were come from the construction site under Contract No. CV/2013/08. 

 

9.1.9                 Upon receipt of the complaint on 25 August 2016, joint site inspection for the complaint investigation was conducted by RE, IEC, ET and the Contractor of Contract 6 (CCKJV) at concerned area on 25 August 2016.  The observations during the site inspection are summarized below:

(f)          No slurry and muddy water was observed in the concerned Nylon Dam.

(g)         No muddy water and choked silt were observed at the U-channel of the concerned farm in Ping Yeung Village.  Moreover, it was noted that the ground levels of the concerned farm as well as the said U-channel was higher than the adjacent construction site.  It revealed that complaint choked silt at the U-channel of the farm was not likely come from the construction site.

(h)         Wastewater treatment facilites (2 nos. of AquaSed) at upstream of the Nylon dam were provided by Contract 6. According to the daily record of wastewater treatment systems provided by the Contractor of Contract 6, the wastewater discharge from the site was compliance with the Discharge Licences requirements.

(i)           To minimize the muddy runoff from the site, the Contractor has covered the exposed slopes as far as practicable.  Moreover, the edges of the slope top were bund up to minimize surface runoff.

 

9.1.10             According to the Hong Kong Observatory, there were rainstorm recorded on 9, 10, 11, 14, 15, 16, 17 and 18 August 2016.  Due to continuous rainfall, large amount of surface muddy runoff generated from the surrounding environment has been flowing into existing stream near Ping Yeung Village.  The muddy runoff resulted in slurry and mud accumulated in the river bed.

 

9.1.11             In our investigation, it is considered the slurry and mud observed within watercourse near Ping Yeung Village was due to surface runoff and mud from the surrounding environmental under rainstorm and unlikely caused by the works under the project.  Besides, the sediment/silt accumulated in the U-channel carrying water to nearby farm was also unlikely due to the project.  Nevertheless, CCKJV should continue fully implement the water pollution mitigation measures throughout the construction period.

 

Table 9-1           Statistical Summary of Environmental Complaints

Reporting Period

Contract No

Environmental Complaint Statistics

Frequency

Cumulative

Complaint Nature

19 May 2014 ¡V

31 July 2016

Contract 2

2

19

Ÿ  (8)Water Quality

Ÿ  (8) Dust

Ÿ  (3) Noise

06 Nov 2013 ¡V

31 July 2016

Contract 3

0

4

Ÿ  (1) Dust

Ÿ  (2) Water quality

Ÿ  (1) Noise

16 Aug 2013 ¡V

31 July 2016

Contract 5

0

4

Ÿ  (3) Dust

Ÿ  (1) Noise

16 Aug 2013 ¡V

31 July 2016

Contract 6

4

21

Ÿ  (15) Water Quality

Ÿ  (5) Dust

Ÿ  (1) Noise

15 Feb 2016 ¡V

31 July 2016

Contract 7

0

0

N/A

16 Aug 2013 ¡V

31 July 2016

SS C505

0

1

(1) Noise

1 ¡V 31 August 2016

Contract 2

0

19

Ÿ  (8)Water Quality

Ÿ  (8) Dust

Ÿ  (3) Noise

Contract 3

0

4

Ÿ  (1) Dust

Ÿ  (2) Water quality

Ÿ  (1) Noise

Contract 5

0

4

Ÿ  (3) Dust

Ÿ  (1) Noise

Contract 6

1

22

Ÿ  (16) Water Quality

Ÿ  (5) Dust

Ÿ  (1) Noise

Contract 7

0

0

N/A

SS C505

0

0

N/A

 

Table 9-2           Statistical Summary of Environmental Summons

Reporting Period

Contract No

Environmental Summons Statistics

Frequency

Cumulative

Complaint Nature

19 May 2014 ¡V

31 July 2016

Contract 2

0

0

NA

06 Nov 2013 ¡V

31 July 2016

Contract 3

0

0

NA

16 Aug 2013 ¡V

31 July 2016

Contract 5

0

0

NA

16 Aug 2013 ¡V

31 July 2016

Contract 6

0

0

NA

15 Feb 2016 ¡V

31 July 2016

Contract 7

0

0

NA

16 Aug 2013 ¡V

31 July 2016

SS C505

0

0

NA

1 ¡V 31 August 2016

Contract 2

0

0

NA

Contract 3

0

0

NA

Contract 5

0

0

NA

Contract 6

0

0

NA

Contract 7

0

0

NA

SS C505

0

0

NA

 

 

Table 9-3           Statistical Summary of Environmental Prosecution

Reporting Period

Contract No

Environmental Prosecution Statistics

Frequency

Cumulative

Complaint Nature

19 May 2014 ¡V

31 July 2016

Contract 2

0

0

NA

06 Nov 2013 ¡V

31 July 2016

Contract 3

0

0

NA

16 Aug 2013 ¡V

31 July 2016

Contract 5

0

0

NA

16 Aug 2013 ¡V

31 July 2016

Contract 6

0

0

NA

15 Feb 2016 ¡V

31 July 2016

Contract 7

0

0

NA

16 Aug 2013 ¡V

31 July 2016

SS C505

0

0

NA

1 ¡V 31 August 2016

Contract 2

0

0

NA

Contract 3

0

0

NA

Contract 5

0

0

NA

Contract 6

0

0

NA

Contract 7

0

0

NA

SS C505

0

0

NA

 

The Other Contracts

9.1.12             Since the construction works at the Contract 4 has not yet commenced, no environmental complaint, summons and prosecution under the EM&A Programme are registered in the Reporting Period.

 


10                         Implementation Status of Mitigation Measures

10.1                   General Requirements

10.1.1             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.

 

10.1.2             All contracts under the Project shall be implementing the required environmental mitigation measures according to the approved EM&A Manual as subject to the site condition.  Environmental mitigation measures generally implemented by Contracts 2, 3, 5, 6, 7 and Contract SS C505 in this Reporting Period are summarized in Table 10-1.  

 

Table 10-1         Environmental Mitigation Measures

Issues

Environmental Mitigation Measures

Water Quality

¡P       Wastewater to be treated by the wastewater treatment facilities i.e. sedimentation tank or similar facility before discharge.

Air Quality

¡P       Maintain damp / wet surface on access road

¡P       Low vehicular speed within the works areas.

¡P       All vehicles must use wheel washing facility before off site

¡P       Sprayed water during breaking works

¡P       A cleaning truck was regularly performed on the public road to prevent fugitive dust emission

Noise

¡P       Restrain operation time of plants from 07:00 to 19:00 on any working day except for Public Holiday and Sunday.

¡P       Keep good maintenance of plants

¡P       Place noisy plants away from residence or school

¡P       Provide noise barriers or hoarding to enclose the noisy plants or works

¡P       Shut down the plants when not in used.

Waste and Chemical Management

¡P       On-site sorting prior to disposal

¡P       Follow requirements and procedures of the ¡§Trip-ticket System¡¨

¡P       Predict required quantity of concrete accurately

¡P       Collect the unused fresh concrete at designated locations in the sites for subsequent disposal

General

¡P       The site was generally kept tidy and clean.

 

10.2                   Tentative Construction Activities in the Coming Month

10.2.1             As advised by the ER, the construction works under Contract 5 was substantially completed on 31 August 2016.  Construction activities for other Contracts in the coming month are listed below:

Contract 2

Mid-Vent Portal

Ÿ    Tube excavation (NB+SB)

Ÿ    Adit waterproofing, lining and post-excavation grouting

Ÿ    Ventilation building superstructure and backfilling

North Portal

Ÿ    Southbound TBM excavation

Ÿ    Northbound bench excavation and tunnel enlargement

Ÿ    Retaining walls and slope stabilization

South Portal

Ÿ    Southbound and Northbound D&B excavation

Ÿ    South ventilation building superstructure

Admin Building

Ÿ    Building superstructure

 

Contract 3

Ÿ   Cable detection and trial trenches

Ÿ   Demolition of the Existing Vehicular Bridge between Tai Wo Service West and Tai Wo Service Road East

Ÿ   Installation of Stone Cladding

Ÿ   Cap pier construction of Kiu Tau Footbridge

Ÿ   Noise barrier construction

Ÿ   Pier / Pier Table construction

Ÿ   Pile cap works

Ÿ   Portal beam construction

Ÿ   Piling works for viaduct

Ÿ   Piling works for noise barrier

Ÿ   Retaining Wall construction

Ÿ   Road works

Ÿ   Utilities duct laying

Ÿ   Viaduct segment erection

Ÿ   Water Main Laying

Contract 6

Ÿ   Slope Works

Ÿ   Bored Piling

Ÿ   Pile Cap Construction

Ÿ   Bridge Pier Construction

Ÿ   Sewage Treatment Plant Construction

Ÿ   Tunnel Works

Ÿ   Segment Installation

Contract 7

Ÿ   Piling Works at Bridge A,C and E

Ÿ   Pile caps construction at Bridge B,C and D

Ÿ   Column construction at Bridge C

Contract SS C505

Ÿ   General Site Set-up

Ÿ   Building no.4, 5, 6, 9, 11 and 36 construction

Ÿ   Excavation waterproofing works for Building no. 4, 6 & 11

Ÿ   Pile cap construction for Building no.4,6&7

Ÿ   Tower crane operation and erection

Ÿ   Disassembly of crawler crane

Ÿ   Grouting and full core to completed bored piles

Ÿ   Bridge construction works including construction of bridge column, retaining wall, pile cap and pier

Ÿ   Underground drainage works

Ÿ   Prototype ¡§A¡¨ construction works

Ÿ   Mock up for south entrance double curve cladding

Ÿ   Formwork and falsework for PTB¡¦s slab construction

Ÿ   Construction PTB M/F flat slab

Ÿ   Steel beam works for maintenance platform for PTB

Ÿ   Pile cap construction for PTB, including excavation and backfilling works

Ÿ   Bridge deck construction for Bridges 1, 2 & 3

Ÿ   Footing construction

 

10.3                   Key Issues for the Coming Month

10.3.1             Key issues to be considered in the coming month for Contracts 2, 3, 6, 7 and SS C505 include:

Ÿ    Implementation of control measures for rainstorm;

Ÿ    Regular clearance of stagnant water during wet season;

Ÿ    Implementation of dust suppression measures at all times;

Ÿ    Potential wastewater quality impact due to surface runoff;

Ÿ    Potential fugitive dust quality impact due from the dry/loose/exposure soil surface/dusty material;

Ÿ    Disposal of empty engine oil containers within site area;

Ÿ    Ensure dust suppression measures are implemented properly;

Ÿ    Sediment catch-pits and silt removal facilities should be regularly maintained;

Ÿ    Management of chemical wastes;

Ÿ    Discharge of site effluent to the nearby wetland, stockpiling or disposal of materials, and any dredging or construction area at this area are prohibited;

Ÿ    Follow-up of improvement on general waste management issues; and

Ÿ    Implementation of construction noise preventative control measures

 

10.3.2             Since the construction work of Contract 4 has not commenced, no environmental issue is presented.


11                         Conclusions and Recommendations

11.1                   Conclusions

11.1.1             This is the 37th monthly EM&A report presenting the monitoring results and inspection findings for the Reporting Period from 1 to 31 August 2016.

 

11.1.2             For air quality monitoring, no 1-hour and 24-hour TSP monitoring results triggered the Action or Limit Levels were recorded. No NOEs or the associated corrective actions were therefore issued.

 

11.1.3             No noise complaint (which is an Action Level exceedance) was received and no construction noise measurement results that exceeded the Limit Level were recorded in the Reporting Period. No NOEs or the associated corrective actions were therefore issued.

 

11.1.4             For water quality monitoring, thirty (30) Limit Level (LL) exceedances and two (2) Action Level (AL) exceedances, namely twelve (12) AL/LL exceedance of turbidity and twenty (20) LL exceedances of Suspended Solids were recorded for the Project.  Investigations for the cause of exceedances on 2, 3, 4, 10, 11 and 12 August have been conducted by ET and investigation results revealed that these exceedances were not project related. The IRs and the associated investigation reports were submitted to relevant parties.  Exceedances on 18, 19, 22, 23, 24 and 31 August 2016 are under investigation by ET.

 

11.1.5             No environmental summons or successful prosecutions were recorded in the Reporting Period. 

 

11.1.6             In this Reporting Period, one (1) documented environmental complaint was received in respect of the wastewater issue related to Contract 6.  Upon receipt of the complaints, RE, IEC and ET with the relevant Contractors has immediately undertaken investigation. Follow up actions have been undertaking by the Contractor to resolve the deficiencies and investigation report conducted by ET had submitted to all relevant parties. 

 

11.1.7             During the Reporting Period, weekly joint site inspection by the RE, IEC, ET with the relevant Main-contractor were carried out for Contracts 2, 3, 5, 6, 7 and SS C505 in accordance with the EM&A Manual stipulation.  No non-compliance observed during the site inspection. 

 

11.2                   Recommendations

11.2.1             As wet season has come, preventive measures for muddy water or other water pollutants from site surface flow to local stream such as Kong Yiu Channel, Ma Wat Channel, Ping Yuen River or public area would be the key issue.  The Contractors should paid special attention on water quality mitigation measures and fully implement according ISEMM of the EM&A Manual, in particular for working areas near Ma Wat Channel and Ping Yuen River.  Moreover, all effluent discharge shall be ensure to fulfill Technical Memorandum of Effluent Discharged into Drainage and Sewerage Systems, inland and Coastal Waters criteria or discharge permits stipulation.

 

11.2.2             Construction noise would be a key environmental issue during construction work of the Project.  Noise mitigation measures such as using quiet plants should be implemented in accordance with the EM&A requirement.

 

11.2.3             Since most of construction sites under the Project are located adjacent to villages, the Contractors should fully implement air quality mitigation measures to reduce construction dust emission.

 

11.2.4             Furthermore, daily cleaning and weekly tidiness shall be properly performed and maintained. In addition, mosquito control should be kept to prevent mosquito breeding on site.