Contract No. HY/2013/02

Hong Kong – Zhuhai – Macao Bridge

Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage I (Western Portion)

 

 

Summary of change and justification to previous submitted Contract Specific EM&A manual

 

Section

Description of change

Justification

Section 9

Adding Section 9

By change of construction arrangement, marine works is included.

9.1.1A

Removed unrelated content and revised.

No reclamation filling and dredging work

9.1.5A

Revised

No reclamation filling and dredging work

9.4.1 i

3 impact locations IS7, IS10 and IS(Mf) 11 are proposed for this contract,

Project EM&A manual have identified these impact Water quality monitoring stations. These monitoring stations are within 250m-500 m envelope of our construction site.

9.4.1 ii

7 (SR) impact stations SR3, SR4(N), SR5, SR6, SR7, SR10A, SR10B(N) are proposed for this contract,

Simply, as we are only part of BCF project, the (SR) stations should tally with the station at BCF reclamation HY/2010/02 Contract Specific EM&A manual.

9.4.1 iii

5 (CS) Control/far field stations CS(Mf)3, CS(Mf)5 CS4, CS6, CSA are proposed for this contract,

Same as above reason.

Table 9.2

Table 9.2 is revised according to 9.4.1., Remarks is added. And 9.4.2b for operation phase is removed

 

9.5.4

Not Applicable

 

9.6

Not Applicable

 

9.7.1A

Removed unrelated content and revised

No reclamation filling and dredging work

9.7.2-9.7.5

Not Applicable

 

9.9

Not Applicable

 

Section 10

Added Section 10

By change of construction arrangement, marine works is included.

10.2 – 10.3

Not Applicable

No reclamation filling and dredging work

10.2.8

Not Applicable

 

10.2.10A

Removed content related to Romer’s Tree Frog

No Romer’s Tree Frog habitats around the site area

10.2.11-10.2.13

Not Applicable

No Bored Piling

10.2.14A, 10.2.16A

Revised and adding detail of Tubular Steel Piling

By change of construction arrangement. Tubular Steel piling will be used.

 

 

10.2.14A, 10.2.16A

Revised and adding detail of Tubular Steel Piling

By change of construction arrangement. Tubular Steel piling will be used.

10.2.15

Not Applicable

 

10.2.17

Remove unrelated content and revised.

No reclamation filling and dredging work

10.2.25- 10.2.27

Not Applicable

 

10.3.2

Adding “Vessel base” and Replace “North and West” to “Northeast and North West” in 1st para. And “one year” change to two year” to last para.

Since the BCF dolphin monitoring is taken by HY/2010/02, the content is tally with the approved HY/2010/02 Contract Specific EM&A

10.3.3- 10.3.6

Not Applicable

No bored piling and Mudflat monitoring is required.

10.4.1

Removed West Lantau Survey area

Since the BCF dolphin monitoring is taken by HY/2010/02, the content is tally with the approved HY/2010/02 Contract Specific EM&A

10.4.2-10.4.5, 10.5.2-10.5.4

Not Applicable

No such monitoring is required in this contact.

10.6.2- 10.6.3

Not Applicable

No bored piling

10.6.4

Revised.

Since the BCF dolphin monitoring is taken by HY/2010/02, the content is tally with the approved HY/2010/02 Contract Specific EM&A

10.6.5

Not Applicable

No such monitoring is required in this contact.

10.7.1, 10.8

Revised.

Since the BCF dolphin monitoring is taken by HY/2010/02, the content is tally with the approved HY/2010/02 Contract Specific EM&A

 

 

 


 

REVISION HISTORY

REV

REV DATE

DESCRIPTION OF CHANGE

PREPARED BY

REVIEWED BY

APPROVED BY

1

4-Feb-15

First Submission

EO

PM

PM

2

15-Oct-15

By change of construction arrangement. Adding Section 9 and 10 and Fig.3,4

EO

PM

PM

3

25-Nov-15

Incorporated The IEC comments on 18 Nov and amended the text where necessary

EO

PM

PM

4

10-Dec-15

Incorporated The IEC comments on 9 Dec and amended the text where necessary

EO

PM

PM

 

 

 

 

 

 

 

 

 

Table of Contents

 

1....... INTRODUCTION.. 1

1.1.... Background.. 1

1.2.... Purposes of this Manual 1

2....... PROJECT DESCRIPTION.. 3

2.1.... Project Description.. 3

2.2.... Implementation Programme. 3

2.3.... Concurrent Projects During Construction Phase. 3

3....... PROJECT ORGANIZATION.. 5

3.1.... Project Organization.. 5

4....... ENVIRONMENTAL SUBMISSION.. 8

4.1.... Introduction.. 8

4.2.... Environmental Management Plan(EMP) 8

4.3.... Waste Management Plan(WMP) 8

4.4.... Construction Method Statement 9

5....... AIR QUALITY.. 10

5.1.... Air Quality Parameters. 10

5.2.... Monitoring Equipment 10

5.3.... Laboratory Measurement / Analysis. 12

5.4.... Monitoring Locations. 12

5.5.... Baseline Monitoring for Fugitive Dust 13

5.6.... Impact Monitoring for Fugitive Dust 14

5.7.... Action and Limit Levels. 14

5.8.... Event and Action Plan.. 15

5.9.... Mitigation Measures. 17

5.10... Reporting of Monitoring Data to ENPO.. 17

6....... Noise. 19

6.1.... Noise Quality Parameters. 19

6.2.... Monitoring Equipment 19

6.3.... Monitoring Locations. 19

6.4.... Baseline Monitoring for Construction Noise. 20

6.5.... Impact Monitoring for Construction Noise. 20

6.6.... Event  and Action Plan for Construction Noise. 21

6.7.... Mitigation Measures. 22

6.8.... Reporting of Monitoring Data to ENPO.. 23

7....... SEDIMENT QUALITY.. 24

7.1.... Summary. 24

8....... WASTE MANAGEMENT.. 25

8.1.... General 25

8.2.... Waste EM&A Requirements. 25

9....... WATER QUALITY.. 28

9.1 .... Water Quality Parameters. 28

9.2.... Monitoring Equipment 29

9.3.... Laboratory Measurement/Analysis. 31

9.4.... Monitoring Locations. 31

9.5.... Baseline Monitoring for Water Quality. 33

9.6.... Efficiency of Silt Curtain and Cage Curtain.. 34

9.7.... Impact Monitoring for Water Quality. 34

9.8.... Post-Monitoring for Water Quality. 35

9.9.... Impact Operational Phase Monitoring.. 35

9.10... Event and Action Plan.. 35

9.11... Mitigation Measures. 39

10..... ECOLOGY.. 40

10.1... Introduction.. 40

10.2... Ecological Mitigation Measures and Implementations. 40

10.3... Monitoring and Audit for Ecology. 42

10.4... Monitoring Location.. 43

10.5... Baseline Monitoring for Ecology. 43

10.6... Impact Monitoring for Ecology. 44

10.7... Post-construction Monitoring for Ecology. 46

10.8... Event and Action Plan.. 47

11..... FISHERIES.. 49

11.1... Summary. 49

12..... cultural heritage. 50

12.1... Summary. 50

13..... hazard to life. 51

13.1... Summary. 51

14..... landscape & Visual impact 52

14.1... Introduction.. 52

14.2... Monitoring Details. 52

14.3... Baseline Monitoring.. 55

15..... SITE ENVIRONMENTAL AUDIT.. 57

15.1... Site Inspection.. 57

15.2... Compliance with Legal and Contractual Requirements. 57

15.3... Environmental Complaints. 58

16..... reporting.. 60

16.1... General 60

16.2... Baseline Monitoring Report 60

16.3... Monthly EM&A Reports. 61

16.4... Quarterly EM&A Summary Reports. 65

16.5... Final EM&A Review Reports. 67

16.6... Data Keeping.. 69

16.7... Interim Notifications of Environmental Quality Limit Exceedances. 69

 

 


 

FIGURES

 

Figure 1           Location of Air Monitoring Stations

Figure 2           Location of Noise Monitoring Stations

Figure 3           Location of Water Quality Monitoring Stations

Figure 4           Dolphin Monitoring Line transect Layout

 

LIST OF TABLES

Table 5.1         Construction Dust Monitoring Locations

Table 5.2         Action and Limit Levels for Air Quality

Table 5.3         Event / Action Plan for Air Quality

Table 6.1          Proposed Airborne Construction Noise Monitoring Locations

Table 6.2         Action and Limit Levels for Construction Noise

Table 6.3         Event / Action Plan for Construction Noise Monitoring

Table 8.1          Waste Management Checklist

Table 9.1          Laboratory analysis for SS

Table 9.2         Water Quality Monitoring Stations (construction phases)

Table 9.3         Action and Limit Levels for Water Quality

Table 10.1       Summary of Dolphin Monitoring Equipment Requirements

Table10.2        Event / Action Plan for for Dolphin Monitoring

Table10.3(a)  Action and Limit Levels for Chinese White Dolphin Monitoring - Approach to Define Action Level (AL) and Limit Level (LL):

Table10.3(b) Derived Value of Action Level (AL) and Limit Level (LL) for Chinese White Dolphin Monitoring

Table 14.1       Monitoring Programme

Table 14.2       Mitigation Measures to be Monitored during Construction and Operation Phases

Table 14.3      Proposed Format for Preliminary Funding, Implementation, Management and

Maintenance Proposal

Table 14.4       Action Plan for Landscape and Visual Works

 

LIST OF APPENDICES

Appendix A     Site Area of the Contract

Appendix B     Construction Programme

Appendix C     Environmental Mitigations Implementation Schedule (EMIS)

Appendix D     Project Organization for Environmental Works

Appendix E      Sample Data Sheet for Monitoring

Appendix F      Sample Template for Interim Notification


 

1            INTRODUCTION

 

1.1         Background

1.1.1          Not applicable.

Hong Kong Link Road

1.1.2          Not applicable.

1.1.3          Not applicable.

1.1.4          Not applicable.

Hong Kong Boundary Crossing Facilities

1.15A     This Contract Specific Environmental Monitoring and Audit (EM&A) Manual is prepared for Contract HY/2013/02 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage I (Western Portion) (hereafter referred to as “the Contract”) for the Highways Department of Hong Kong Special Administrative Region (HKSAR). The Contract was awarded to China Harbour Engineering Company Limited (hereafter referred to as “the Contractor”)  and ETS-Testconsult Limited was appointed as the Independent Environmental Team (ET) by the Contractor.

1.16A      The Contract is part of Hong Kong – Zhuhai – Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) which is “Designated Projects”, under Schedule 2 of the Environmental Impact Assessment Ordinance (EIAO) (Cap 499).  An Environmental Impact Assessment (EIA) Report together with an EM&A Manual (hereafter referred to as approved EM&A Manual) (Register No. AEIAR-145/2009) was prepared for the Project and approved by Environmental Protection Department (EPD). These documents are available through the EIAO Register.

1.17A           This Contract Specific EM&A Manual is to outline the monitoring and audit programme to be undertaken during the course of the construction works and provide systematic procedures for monitoring, auditing and minimization of the environmental impacts associated with the constriction. The Site Area of the Contract is shown in Appendix A.

1.2         Purposes of this Manual

1.2.1       The purposes of the EM&A Manual are to:

l   Guide the set up of an EM&A programme to ensure compliance with the EIA recommendations;

l   Specify the requirements for monitoring equipment;

l   Propose environmental monitoring points, monitoring frequency etc.;

l   Propose Action/Limit Level; and

l   Propose Event/Action Plan.

l   Assess the effectiveness of the recommended mitigation measures.

1.2.2       This Manual outlines the monitoring and audit programme for the construction of the Contract and provide systematic procedures for monitoring, auditing and minimising environmental impacts.

1.2.3      Hong Kong environmental regulations and the Hong Kong Planning Standards and Guidelines (HKPSG) have served as environmental standards and guidelines in the preparation of this Manual.  In addition, this Contract Specific EM&A Manual has been prepared in accordance with the requirements stipulated in Annex 21 of the Technical Memorandum on the EIA Process (TM-EIAO).

1.2.4       This Manual contains of the following information:

l   Responsibilities of the Contractor, the Engineer or Engineer’s Representative (ER), Environmental Team (ET), and the Independent Environmental Checker (IEC) under the context of the EM&A;

l   Role of the Environmental Protection Office (ENPO);

l   Project organization for the EM&A works;

l   The basis for, and description of the broad approach underlying the EM&A programme;

l   Details of the methodologies to be adopted, including all laboratories and analytical procedures, and details on quality assurance and quality control programme;

l   The rationale on which the environmental monitoring data will be evaluated and interpreted;

l   Definition of Action and Limit levels;

l   Establishment of Event and Action plans;

l   Requirements for reviewing pollution sources and working procedures required in the event of non-compliance with the environmental criteria and complaints; and

l   Requirements for presentation of environmental monitoring and audit data and appropriate reporting procedures.

l   Requirements for reviewing the EIA predictions and the effectiveness of mitigations measures, environmental management system and the EM&A programme.

1.2.5       For the purpose of this manual, the ER shall refer to the Engineer as defined in the Construction Contract, in cases where the Engineer’s powers have been delegated to the ER, in accordance with the Construction Contract.  The ET Leader, who shall be responsible for and in charge of the ET, shall refer to the person delegated the role of executing the environmental monitoring and audit requirements.

 

2            PROJECT DESCRIPTION

2.1         Project Description

               Hong Kong Link Road

2.1.1       Not applicable.

               Hong Kong Boundary Crossing Facilities

2.1.2A     The proposed works under this Contract comprise the following:

               (i)    Construction of the viaducts and roads at the western portion of Hong Kong Boundary Crossing Facilities (HKBCF) mainly for connection with the Hong Kong – Zhuhai – Macao Bridge (HZMB), Hong Kong Link Road (HKLR), Hong Kong International Airport (HKIA) and the Tuen Mun-Chek Lap Kok Link (TM-CLKL);

               (ii)   Construction of the road modification at the SkyCity Interchange at Airport Island;

               (iii)  Construction of associated street lighting, street furniture, road marking, road signage, drainage, sewerage, fresh water and flushing water supply, irrigation, landscape, electrical and mechanical (E&M), utilities and services works;

               (iv)  Provisioning of civil engineering works and power supply installation for the Traffic Control and Surveillance System (TCSS); and

               (v)   Other works in accordance with the Contracts.

2.2         Implementation Programme

2.2.1A     The Construction of this contract will start in the 3rd quarter of 2014 and tentatively completed in the 4th quarter of 2017

2.2.2       Appendix B illustrates the tentative construction programme for the Contract. All the key construction activities are shown with the tentative dates for commencement and completion.

2.2.3       Detailed EIA assessments have been conducted and presented in the EIA report.  All necessary mitigation measures have been identified and recommended.  The Environmental Mitigation Implementation Schedule (EMIS) is given in Appendix C. It specifies the extent, locations, time frame and responsibilities for the implementation of the environmental mitigation measures identified.

2.3         Concurrent Projects During Construction Phase

2.3.1A     The advance works of Tuen Mun Check Lap Kok Link (TMCLKL), i.e. reclamation works of the southern landfall of the TMCLKL sub-sea tunnel commenced in late 2011. The southern connection of the TMCLKL was scheduled to complete in 2016 to tally with the commissioning of the HZMB, and to complete the northern connection in 2018.  The Construction of Hong Kong Link Road (HKLR) commenced in Year 2012 and is scheduled to complete in Year 2016.

2.3.2       The Main Bridge of the HZMB within the Guangdong water would also be concurrent with the construction of HKBCF and southern landfall of TMCLKL. The tentative commissioning date is also 2016.

2.3.3       Another concurrent project during the construction of HKBCF is the 72 ha reclamation for Lantau Logistics Park.  This has been considered as a concurrent project in the EIA.


 

3            PROJECT ORGANIZATION

3.1         Project Organization

3.1.1       The proposed project organization and lines of communication with respect to environmental protection works are shown in Appendix D.

3.1.2       The leader of the ET shall be an independent party from the Contractor and has relevant professional qualifications, or have sufficient relevant EM&A experience subject to approval of the Engineer’s Representative (ER) and EPD.

3.1.3.1    The Contractor

l   Employ an Environmental Team (ET) to undertake monitoring, laboratory analysis and reporting of environmental monitoring and audit;

l   Provide assistance to ET, IEC and ENPO in carrying out monitoring and auditing;

l   Provide site and works information upon the request of ET, IEC or ENPO within two working days of such request;

l   Participate in site inspections undertaken by the ET, as required, and undertake any corrections as instructed by the Engineer;

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

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

l   Adhere to the procedures for environmental complaint investigation as set out in Section 15.3 of this EM&A Manual.

l   Adhere to the agreed procedures for carrying out complaint investigation.

3.1.3.2    The Environmental Team (ET)

l   Set up all the required environmental monitoring stations;

l   Monitor various environmental parameters as required in the EM&A Manual;

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

l   To conduct environmental investigation and submit the ET Leader certified investigation report to the Contractor, IEC, ENPO and ER upon receive of environmental enquiry and/or complaint;

l   Carry out site inspection to investigate and audit the Contractors' site practice, equipment and work methodologies with respect to pollution control and environmental mitigation, and take proactive actions to pre-empt problems;

l   Audit and prepare audit reports on the environmental monitoring data and site environmental conditions

l   Report on the environmental monitoring and audit results to the IEC, ENPO, Contractor, the ER and EPD or its delegated representative;

l   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;

l   Undertake regular on-site audits/inspections and report to the Contractor, IEC, ENPO and the ER of any potential non-compliance; and

l   Follow up and close out non-compliance actions.

3.1.3.3    Engineer or Engineer’s Representative

l   Supervise the  Contractor’s activities and  ensure  that  the  requirements  in the EM&A Manual are fully complied with;

l   Inform the Contractor when action is required to reduce impacts in accordance with the Event and Action Plans;

l   Assists the IEC and ENPO to audit the results of the EM&A works carried out by the ET; and

l   Comply with the agreed Event and Action Plan in the event of any exceedance.

3.1.3.4    Independent Environmental Checker

l   Review the EM&A works performed by the ET (at not less than monthly intervals);

l   Audit the monitoring activities and results (at not less than monthly intervals);

l   Report the audit results to the ER and EPD in parallel;

l   Review the EM&A reports (monthly and quarterly summary reports) submitted by the ET;

l   Review the proposal on mitigation measures submitted by the Contractor in accordance with the Event and Action Plans;

l   Check the mitigation measures that have been recommended in the EIA and this Manual, and ensure they are properly implemented in a timely manner, when necessary; and

l   Report the findings of site inspections and other environmental performance reviews to ER and EPD.

3.1.3.5    Environmental Protection Office (ENPO)

              Notwithstanding the above, given that the TMCLKL, HKBCF and HKLR will be constructed concurrently, an ENPO or equivalent to oversee the cumulative construction projects in North Lantau area will be established by the Project Proponent. The responsibility of the ENPO would be similar to that of the IEC but should also include:

l   coordinate the monitoring and auditing works for all the on-going projects in the area in order to identify possible sources/causes of exceedances and recommend suitable remedial actions where appropriate;

l   review cumulative impacts including possible sources/causes of exceedance and recommending suitable remedial actions;

l   liaise with the mainland project teams for HZMB Main Section to identify and assess any cross-boundary cumulative impacts in order to establish suitable remedial actions where necessary; and

l   coordinate the assessment and response to complaints/enquires from locals, green groups, district councils or the public at large.

               The exact responsibilities and organization of the ENPO have been defined by the Project Proponent in accordance with the relevant Environmental Permits.

3.1.4       Sufficient and suitably qualified professional and technical staff shall be employed by the respective parties to ensure full compliance with their duties and responsibilities, as required under the EM&A programme for the duration of the Project.

3.1.5       The ET Leader shall have at least 7 years if experience in conducting EM&A for infrastructure projects.  His qualification shall be vetted by the ER and the IEC.


 

4            ENVIRONMENTAL SUBMISSION

4.1         Introduction

4.1.1       The Contractor shall prepare the Environmental Management Plan (including a Waste Management Plan), Construction Method Statement and obtain approval from ER, IEC and relevant authorities to encompass the recommended environmental protection / mitigation measures with respect to their latest construction methodology and programme. All environmental submission shall be certified by the ET leader before seeking the IEC’s verification.

4.2         Environmental Management Plan

4.2.1       A systematic Environmental Management Plan (EMP) shall be set up by the Contractor to ensure effective implementation of the mitigation measures, monitoring and remedial requirements presented in the EIA, EM&A and EMIS. The ER and the IEC will audit the implementation status against the EMP and advise the necessary remedial actions required. These remedial actions shall be enforced by the ER through contractual means.

4.2.2       The EMP will define in details how the Contractor (together with its sub-contractors) implements the recommended mitigation measures in order to achieve the environmental performance defined in the Hong Kong environmental legislation and the EIA documentation.

4.2.3       The review of on-site environmental performance shall be undertaken by ER and IEC through a systematic checklist and audit once the construction commences. The environmental performance review programme comprises a regular assessment on the effectiveness of the EMP. Reference should be made to Environment, Transport and Works Bureau Technical Circular (Works) No. 19/2005 “Environmental Management on Construction Sites” or its latest versions, and any other relevant Technical Circulars.

4.3         Waste Management Plan (WMP)

4.3.1       As part of the EMP, the Contractor shall include a WMP for the construction of the assignment and submit to the ET, IEC and EPD for approval.  Where waste generation is unavoidable, the opportunities for recycling or reusing should be maximised. If wastes cannot be recycled, recommendations for appropriate disposal routes should be provided in the WMP. A method statement for stockpiling and transportation of the excavated materials and other construction wastes should also be included in the WMP and approved before the commencement of construction.  All mitigation measures arising from the approved WMP shall be fully implemented.

4.3.2       For the purpose of enhancing the management of Construction and Demolition (C&D) materials including rock, and minimising its generation at source, construction would be undertaken in accordance with the Environment, Transport and Works Bureau Technical Circular (Works) No. 33/2002 - Management of Construction and Demolition Material Including Rock, or its latest versions. The management measures stipulated in the Technical Circular should be incorporated into the WMP.

 

4.4         Construction Method Statement

4.4.1      In case the Contractor would like to adopt alternative construction methods or implementation schedules, it is required to submit details of methodology and equipment to the ER for approval before the work commences.  Any changes in construction method shall be reflected in a revised EMP or the Contractor will be required to demonstrate the manner in which the existing EMP should accommodate the proposed changes. The Contractor may need to apply for a Further Environmental Permit (FEP) from EPD before commencement of any construction activities.


 

5            AIR QUALITY

5.1         Air Quality Parameters

5.1.1       Monitoring and audit of the Total Suspended Particulates (TSP) levels shall be carried out by the ET to ensure that any deteriorating air quality could be readily detected and timely action taken to rectify the situation.

5.1.2       1-hour and 24-hour TSP levels should be measured to indicate the impacts of construction dust on air quality. The 24-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. Upon approval of the IEC, 1-hour TSP levels can be measured by direct reading methods which are capable of producing comparable results as that by the high volume sampling method, to indicate short event impacts.

5.1.3       All relevant data including temperature, pressure, weather conditions, elapsed-time meter reading for the start and stop of the sampler, identification and weight of the filter paper, and any other local atmospheric factors affecting or affected by site conditions, etc., shall be recorded down in detail. A sample data sheet is shown in Appendix E.

5.2         Monitoring Equipment

5.2.1       High volume samplers (HVSs) complying with the following specifications shall be used for carrying out the 1-hour and 24-hour TSP monitoring:

a)        0.6 - 1.7 m3 per minute adjustable flow range;

b)        equipped with a timing / control device with +/- 5 minutes accuracy for 24 hours operation;

c)        installed with elapsed-time meter with +/- 2 minutes accuracy for 24 hours operation;

d)        capable of providing a minimum exposed area of 406 cm2;

e)        flow control accuracy: +/- 2.5% deviation over 24-hour sampling period;

f)         equipped with a shelter to protect the filter and sampler;

g)        incorporated with an electronic mass flow rate controller or other equivalent devices;

h)        equipped with a flow recorder for continuous monitoring;

i)          provided with a peaked roof inlet;

j)          incorporated with a manometer;

k)        able to hold and seal the filter paper to the sampler housing at horizontal position;

l)          easily changeable filter; and

m)       capable of operating continuously for a 24-hour period.

5.2.2       The ET is responsible for the provision, installation, operation, maintenance, dismantling of the monitoring equipment. They shall ensure that sufficient number of HVSs with an appropriate calibration kit is available for carrying out the baseline monitoring, regular impact monitoring and ad hoc monitoring. The HVSs shall be equipped with an electronic mass flow controller and be calibrated against a traceable standard at regular intervals. All the equipment, calibration kit, filter papers, etc., shall be clearly labelled.

5.2.3       Initial calibration of dust monitoring equipment shall be conducted upon installation and thereafter at bi-monthly intervals. The transfer standard shall be traceable to the internationally recognized primary standard and be calibrated annually. The ET shall provide  the relevant  calibration  data  and  laboratory  calibration  certificate  which should be  properly document for future reference by the IEC and other concerned parties. All the data should be converted into standard temperature and pressure condition.

5.2.4       The flow-rate of the sampler before and after the sampling exercise with the filter in position shall be verified to be constant and be recorded in the data sheet as mentioned in Appendix E.

5.2.5A     If the ET leader proposes alternative dust monitoring equipment / methodology (e.g. use a direct reading dust meter to measure 1-hour TSP levels) after the approval of this EM&A  manual, he shall seek approval from the IEC by submitting sufficient information to the  IEC indicating that the instrument is capable of achieving a comparable result to the HVS.. The instrument should also be calibrated regularly as specified by equipment’s manufacturer, in which calibration certificate shall be submitted to IEC for Approval. The 1-hour sampling shall also be determined periodically by the HVS to check the validity and accuracy of the results measured by direct reading method, and the checking result shall also submitted to the IEC for approval.

5.2.6       Wind data monitoring equipment shall also be provided and set up 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:

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

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

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

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

5.2.7       In exceptional situations, the ET may propose alternative methods to obtain representative wind data upon approval from the ER and agreement form the IEC.

5.3         Laboratory Measurement / Analysis

5.3.1       A clean laboratory with constant temperature and humidity control, and equipped with necessary measuring and conditioning instruments to handle the dust samples collected, shall be available for sample analysis, and equipment calibration and maintenance. The laboratory should be HOKLAS board accredited.

5.3.2       If a site laboratory is set up or a non-HOKLAS accredited laboratory is hired for carrying out the laboratory analysis, the laboratory equipment shall be approved by the ER and the measurement procedures shall be witnessed by the IEC. Any measurement performed by the laboratory shall be demonstrated to the satisfaction of the ER and IEC. IEC shall regularly audit to the measurement performed by the laboratory to ensure the accuracy of measurement results. The ET Leader shall provide the ER with one copy of the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B for his reference.

5.3.3       Filter paper of size 8" x 10" shall be labelled before sampling. It shall be a clean filter paper with no pinholes, and shall be conditioned in a humidity-controlled chamber for over 24-hours and be pre-weighed before use for the sampling.

5.3.4       After sampling, the filter paper loaded with dust shall be kept in a clean and tightly sealed plastic bag. The filter paper shall then be returned to the laboratory for reconditioning in the humidity-controlled chamber followed by accurate weighing by an electronic balance with readout down to 0.1 mg. The balance shall be regularly calibrated against a traceable standard.

5.3.5       All the collected samples shall be kept in a good condition for 6 months before disposal.

5.4         Monitoring Locations

5.4.1       Figure 1 shows the locations of the proposed dust monitoring station for the Contract. The status and locations of dust sensitive receivers may change after issuing this Manual. If such cases exist, the ET Leader shall propose updated monitoring locations and seek approval from ER and agreement from the IEC.

Table 5.1 Construction Dust Monitoring Locations

ID

Location Description

AMS 6(1)

Dragonair/CNAC (Group) Building

AMS 7A(1)

Chu Kong Air-Sea Union Transportation Co. Ltd

Remarks:

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

 

5.4.2       If alternative monitoring locations are proposed due to the situation mentioned in para 5.4.1, the proposed site should be selected based on the following principle:

a)        Situating at the site boundary or such locations close to the major dust emission source(s);

b)        Monitoring as close as possible to the sensitive receptor(s);

c)        Taking into account the prevailing meteorological conditions; and

d)        Assuring minimal disturbance to the occupants and working under a safe condition during monitoring.

5.4.3       The ET shall agree with the ER in consultation with the IEC on the position of the HVS for the installation of the monitoring equipment. When positioning the samplers, the following points shall be noted:

a)        a horizontal platform with appropriate support to secure the samplers against gusty wind should be provided;

b)        no two samplers should be placed less than 2 meters apart;

c)        the distance between the sampler and an obstacle, such as buildings, must be at least twice the height that the obstacle protrudes above the sampler;

d)        a minimum of 2 meters of separation from walls, parapets and penthouses is required for rooftop samplers;

e)        a minimum of 2 meters separation from any supporting structure, measured horizontally is required;

f)         no furnace or incinerator flue is nearby;

g)        airflow around the sampler is unrestricted;

h)        the sampler is more than 20 meters from the dripline;

i)          any wire fence and gate, to protect the sampler, should not cause any obstruction during monitoring;

`

 

j)          permission must be obtained to set up the samplers and to obtain access to the monitoring stations; and

k)        a secured supply of electricity is needed to operate the samplers.

5.4.4       The ENPO may, depending on site conditions and monitoring results, decide whether additional monitoring locations shall be included or any monitoring locations could be removed/ relocated during any stage of the construction phase.

5.5         Baseline Monitoring for Fugitive Dust

5.5.1       Baseline monitoring shall be carried out at all of the designated monitoring locations (see Table 5.1) for at least 14 consecutive days prior to the commissioning of major construction works to obtain daily 24-hour TSP samples. The selected baseline monitoring stations should reflect baseline conditions at the impact stations. One-hour sampling should also be done at least 3 times per day while the highest dust impact is expected.

5.5.2       During the baseline monitoring, there should not be any major construction or dust generation activities in the vicinity of the monitoring stations. Before commencing baseline monitoring, the ET shall inform the IEC of the baseline monitoring programme such that, if required, the ER can conduct on-site audit to ensure accuracy of the baseline monitoring results.

5.5.3       In case the baseline monitoring cannot be carried out at the designated monitoring locations, the ET Leader shall carry out the monitoring at alternative locations that can effectively represent the baseline conditions at the impact monitoring locations. The alternative baseline monitoring locations shall be approved by the ER and agreed with the IEC.

5.5.4       In exceptional cases, when insufficient baseline monitoring data or questionable results are obtained, the ET shall liaise with the IEC and EPD to agree on an appropriate set of data to be used as a baseline reference and submit to ER for approval.

5.5.5       Ambient conditions may vary seasonally and shall be reviewed once every three months. When the ambient conditions have changed and a repeat of the baseline monitoring is required to be carried out for obtaining the updated baseline levels, the monitoring should be at times when the Contractor's activities are not generating dust, at least in the proximity of the monitoring stations. Should change in ambient conditions be determined, the baseline levels and, in turn, the air quality criteria, should be revised. The revised baseline levels and air quality criteria should be agreed with the IEC and EPD.

5.5.6       It is noted that baseline monitoring was undertaken for the Project between September and November 2011 under Agreement CE No. 35/2011 (EP) Baseline Environmental monitoring for Hong Kong – Zhuhai – Macao Bridge Hong Kong Projects – Investigation prior to the construction of the Project.  The baseline monitoring results obtained under Agreement CE No. 35/2011(EP) will be adopted for this Contract.

5.6         Impact Monitoring for Fugitive Dust

5.6.1       The ET shall carry out impact monitoring during the entire construction period. For regular impact monitoring, the sampling frequency of at least once in every 6 days, shall be strictly observed at all the monitoring stations for 24-hour TSP monitoring. For 1-hour TSP monitoring, the sampling frequency of at least 3 times in every 6 days should be undertaken when the highest dust impact occurs. Before commencing impact monitoring, the ET shall inform the IEC of the impact monitoring programme such that the IEC can conduct on-site audit to ensure accuracy of the monitoring results.

5.6.2       The specific time to start and stop the 24-hour TSP monitoring shall be clearly defined for each location and be strictly followed by the ET.

5.6.3       In case of non-compliance with the air quality criteria, more frequent monitoring, as specified in the Action Plan in the following section, shall be conducted within the specified timeframe after the result is obtained. This additional monitoring shall be continued until the excessive dust emission or the deterioration in air quality is rectified, and agreed with the ER and the IEC.

5.7         Action and Limit Levels

5.7.1       The baseline monitoring results form the basis for determining the air quality criteria for the impact monitoring. The ET shall compare the impact monitoring results with air quality criteria set up for 24-hour TSP and 1-hour TSP. Table 5.2 shows the air quality criteria, namely Action and Limit levels to be used.

Table 5.2 Action and Limit Levels for Air Quality

Parameter

Action Level

Limit Level

24-hour TSP Level in µg/m3

For baseline level ≤ 200 µg/m3, Action level = (baseline level * 1.3 + Limit level)/2; For baseline level > 200 µg/m3, Action level = Limit Level

 

For Monitoring station AMS6 Action Level =(66.4*1.3+260)/2 = 173 µg/m3

 

For Monitoring station AMS7 Action Level =(82.3*1.3+260)/2 = 183 µg/m3

260 µg/m3

1-hour TSP Level in µg/m3

For baseline level ≤ 384 µg/m3, Action level = (baseline level * 1.3 + Limit level)/2;

 

For baseline level > 384 µg/m3, Action level = Limit Level

 

For Monitoring station AMS6 Action Level =(169.2*1.3+500)/2 = 360 µg/m3

 

For Monitoring station AMS7 Action Level =(184.2*1.3+500)/2 = 370 µg/m3

500 µg/m3

 

5.8         Event and Action Plan

5.8.1       Should non- compliance of the air quality criteria occur, actions in accordance with the Action Plan in Table 5.3 shall be carried out.

Table 5.3 Event/Action Plan for Air Quality

EVENT

ACTION

ET

IEC

ER

CONTRACTOR

ACTION LEVEL

1.     Exceedance for one sample

1.     Identify source, investigate the causes of  exceedance and propose remedial measures;

2.     Inform IEC and ER;

3.     Repeat measurement to confirm finding;

4.     Increase monitoring frequency to daily.

1.     Check monitoring data submitted by ET;

2.     Check Contractor’s working method.

1.     Notify Contractor.

1.     Rectify any

2.     unacceptable practice;

3.     Amend working methods if appropriate.

2.     Exceedance for two or more consecutive samples

1.     Identify source;

2.     Inform IEC and ER;

3.     Advise the ER on the effectiveness of the proposed remedial measures;

4.     Repeat measurement s to confirm findings;

5.     Increase monitoring frequency to daily;

6.     Discuss with IEC and Contractor on remedial actions required;

7.     If exceedance continues, arrange meeting with IEC and ER;

8.     If exceedance stops, cease additional monitoring.

1.     Check monitoring

data submitted by ET;

2.     Check Contractor’s working method;

3.     Discuss with ET and Contractor on possible remedial measures;

4.     Advise the ER on the effectiveness of the proposed remedial measures;

5.     Supervise Implementation of remedial measures.

1.        Confirm receipt of notification of  failure in writing;

2.     Notify Contractor;

3.     Ensure remedial measures properly implemented.

1.     Submit proposals for remedial to ER within 3 working days of notification;

2.     Implement the agreed proposals;

3.     Amend proposal if appropriate.

LIMIT LEVEL

1.       Exceedance for one sample

1.     Identify source, investigate the causes of exceedance and propose remedial measures;

2.     Inform ER,

Contractor and EPD;

3.     Repeat measurement to confirm finding;

4.     Increase

monitoring frequency to daily;

Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and ER informed of the results.

1.     Check monitoring data submitted by ET;

2.     Check Contractor’s working method;

3.     Discuss with ET and Contractor on possible remedial measures;

4.     Advise the ER on the effectiveness of the proposed remedial measures;

5.     Supervise implementation of remedial measures.

1.     Confirm receipt of notification of failure in writing;

2.     Notify Contractor;

3.     Ensure remedial measures properly implemented.

1.     Take immediate action to avoid further exceedance;

2.     Submit proposals for remedial actions to IEC within 3 working days of notification;

3.     Implement the agreed proposals;

4.     Amend proposal if appropriate.

 


 

EVENT

ACTION

ET

IEC

ER

CONTRACTOR

LIMIT LEVEL

2.     Exceedance for two or more consecutive samples

1.     Notify IEC, ER,

Contractor and EPD;

2.     Identify source;

3.     Repeat measurement to confirm findings;

4.     Increase monitoring frequency to daily;

5.     Carry out analysis of Contractor’s working procedures to determine possible mitigation to be implemented;

6.     Arrange meeting with IEC and ER to discuss the remedial actions to be taken;

7.     Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and ER informed of the results;

8.     If exceedance stops, cease additional monitoring.

1.      Discuss amongst ER, ET, and Contractor on the potential remedial actions;

2.     Review Contractor’s remedial actions whenever necessary to assure their effectiveness and advise the ER accordingly;

3.     Supervise the implementation of remedial measures.

1.    Confirm receipt of notification of failure in writing;

2.     Notify Contractor;

3.     In consultation with the IEC, agree with the Contractor on the remedial measures to be implemented;

4.     Ensure remedial measures properly implemented;

5.     If exceedance continues, consider what portion of the work is responsible and instruct the Contractor to stop that portion of work until the exceedance is abated.

1.     Take immediate action to avoid further exceedance;

2.     Submit proposals for remedial actions to IEC within 3 working days of notification;

3.     Implement the agreed proposals;

4.     Resubmit proposals if problem still not under control;

5.     Stop the relevant portion of works as determined by the ER until the exceedance is abated

 

 

5.9         Mitigation Measures

5.9.1       The approved EIA Report has recommended dust control measures including 8 times of watering per day. Good site practices such as road surface paving, dust enclosures, wheel wash facilities would be implemented to reduce the generation of dust.

5.9.2       All the proposed mitigation measures are summarized in the Environmental Mitigation Implementation Schedule (EMIS) in Appendix C.

5.10       Reporting of Monitoring Data to ENPO

5.10.1     The Assignment, which involves multiple construction contracts, would be constructed concurrently with other major infrastructures such as the HKLR and TM-CLKL. These interface projects will be overviewed by the ENPO. The ENPO will also oversee and coordinate the cumulative environmental issues arising from the concurrent projects.

5.10.2     To facilitate the ENPO to evaluate environmental impacts and investigate complaints, the ET Leaders shall provide the impact air quality monitoring results within one week after the monitoring event. If the 1-Hr TSP is measured by direct reading, the results shall be submitted to ENPO in the next working day. The ET Leader shall follow ENPO's requirements on the data submission format and procedure" as per the current ET's practice and enable rapid response by all concerned parties.


 

6            Noise

6.1         Noise Quality Parameters

6.1.1       Construction noise level shall be measured in terms of the A-weighted equivalent continuous sound pressure level (Leq). Leq, 30 mins shall be used as the monitoring parameter for the time period between 0700 and 1900 hours on normal weekdays. For all other time periods, Leq 5 min shall be employed for comparison with the Noise Control Ordinance (NCO) criteria.

6.1.2       As supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.

6.2         Monitoring Equipment

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

6.2.2       Noise measurements should be made in accordance with standard acoustical principles and practices in relation to weather conditions.

6.2.3       The ET is responsible for the provision, installation, operation, maintenance, dismantle of the monitoring equipment. He shall ensure that sufficient noise measuring equipment and associated instrumentation are available for carrying out the baseline monitoring, regular impact monitoring and ad hoc monitoring.  All the equipment and associated instrumentation shall be clearly labeled.

6.2.4       Due to rejection from Ho Yu College (NMS3) for setting up a noise monitoring station at their school, an alternative location at site boundary of the ER’s site office area at Works Area WA2 (NMS3B) is proposed. Same baseline and Action and Limit Levels for noise, as derived from the baseline monitoring data recorded at Ho Yu College, will be adopted for this alternative noise monitoring location.

6.3         Monitoring Locations

6.3.1       The location of construction noise monitoring stations for the Contract are presented in Table 6.1 and shown in Figure 2.

Table 6.1 Proposed Airborne Construction Noise Monitoring Locations

ID

Location Description

NMS2(1)

Seaview Crescent

NMS3B(1)(2)

Site Boundary of ER’s Site Office Area at Works Area WA2

Remarks:

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

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

 

6.3.2       The ET shall select the monitoring location from the above table based on the locations of the construction activities and seek approval from ER and agreement from the IEC and EPD to the proposal. The monitoring location should be chosen based on the following criteria:

l   at locations close to the major site activities which are likely to have noise impacts;

l   close to the most affected existing noise sensitive receivers; and

l   for monitoring locations located in the vicinity of the sensitive receivers, care should be taken to cause minimal disturbance to the occupants during monitoring.

6.3.3       The monitoring station shall normally be at a point 1 m from the exterior of the sensitive receiver building facade and be at a position 1.2 m above the ground.  If there is problem with access to the normal monitoring position, an alternative position may be chosen, and a correction to the measurements shall be made. For reference, a correction of +3 dB(A) shall be made to the free field measurements. The ET shall agree with the IEC on the monitoring position and the corrections adopted. Once the positions for the monitoring stations are chosen, the baseline monitoring and the impact monitoring shall be carried out at the same position.

6.3.4       The ENPO may, depending on site conditions and monitoring results, decide whether additional monitoring locations shall be included or any monitoring locations could be removed/ relocated during any stage of the construction phase.

6.4         Baseline Monitoring for Construction Noise

6.4.1       The ET shall carry out baseline monitoring prior to the commencement of the construction works. There shall not be any construction activities in the vicinity of the stations during the baseline monitoring. Continuous baseline noise monitoring for the A-weighted levels Leq, L10 and L90 shall be carried out daily for a period of at least two weeks in a sample period of 5 minutes or 30 minutes between 07:00 and 19:00, and 5 minutes between 19:00 and 07:00. A schedule on the baseline monitoring shall be submitted to the ER and IEC for approval before the monitoring starts.

6.4.2       In exceptional cases, when insufficient baseline monitoring data or questionable results are obtained, the ET shall liaise with the IEC and EPD to agree on an appropriate set of data to be used as a baseline reference and submit to the ER for approval.

6.4.3       It is noted that baseline monitoring was undertaken for the Project between September and November 2011 under Agreement CE No. 35/2011 (EP) Baseline Environmental monitoring for Hong Kong – Zhuhai – Macao Bridge Hong Kong Projects – Investigation prior to the construction of the Project.  The baseline monitoring results obtained under Agreement CE No. 35/2011(EP) will be adopted for this Contract.

6.5         Impact Monitoring for Construction Noise

6.5.1       During normal construction working hour (07:00-19:00 Monday to Saturday), monitoring of Leq, 30 minutes noise levels (as six consecutive Leq, 5 minutes readings) shall be carried out at the agreed monitoring locations once every week in accordance with the methodology in the TM.

6.5.2       If a school exists near the construction activity, noise monitoring shall be carried out at the monitoring stations for the schools during the school examination periods. The ET Leader shall liaise with the school’s personnel and the Examination Authority to ascertain the exact dates and times of all examination periods during the course of the contract. 

6.5.3       In case of non-compliance with the construction noise criteria, more frequent monitoring, as specified in the Action Plan, shall be carried out. This additional monitoring shall be continued until the recorded noise levels are rectified or proved to be irrelevant to the construction activities.

6.5.4       A schedule on the compliance monitoring shall be submitted to the ER and IEC for approval before the monitoring starts.

6.6         Event  and Action Plan for Construction Noise

6.6.1       The Action and Limit Levels for construction noise are defined in Table 6.2. Should non-compliance of the criteria occur, actions in accordance with the Action Plan in Table 6.3 shall be carried out.

Table 6.2 Action and Limit Levels for Construction Noise

Parameter

Action Level

Limit Level

07:00 – 19:00 hours on normal weekdays

When one documented complaint is received

75 dB(A)*

Note :

If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the Noise Control Authority have to be followed.

* Reduce to 70 dB(A) for schools and 65 dB(A) during school examination period.

 


 

Table 6.3 Event / Action Plan for Construction Noise Monitoring

 

EVENT

ACTION

ET

IEC

ER

CONTRACTOR

Action Level

1.     Notify IEC and Contractor;

2.     Identify source, investigate the causes of exceedance and propose remedial measures;

3.     Report the results of investigation to the IEC, ER and Contractor;

4.     Discuss with the Contractor and formulate remedial measures;

5.     5 Increase monitoring frequency to check mitigation effectiveness.

1.     Review the analysed results submitted by the ET;

2.     Review the proposed remedial measures by the Contractor and advise the ER accordingly;

3.     Supervise the implementation of remedial measures.

1.     Confirm receipt of notification of failure in writing;

2.     Notify Contractor;

3.     Require Contractor to propose remedial measures for the analysed noise problem;

4.     Ensure remedial measures are properly implemented.

1.     Submit noise mitigation proposals to IEC;

2.     Implement noise mitigation proposals.

Limit Level

1.     Inform IEC, ER, EPD

and Contractor;

2.     Identify source;

3.     Repeat measurements to confirm findings;

4.     Increase monitoring frequency;

5.     Carry out analysis of Contractor’s working procedures to determine possible mitigation to be implemented;

6.     Inform IEC, ER and EPD the causes and actions taken for the exceedances;

7.     Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and ER informed of the results;

8.     If exceedance stops, cease additional monitoring.

1.     Discuss amongst ER, ET, and Contractor on the potential remedial actions;

2.     Review Contractors remedial actions whenever necessary to assure their effectiveness and advise the ER accordingly;

3.     Supervise the implementation of remedial measures.

1.     Confirm receipt of notification of failure in writing;

2.     Notify Contractor;

3.     Require Contractor to propose remedial measures for the analysed noise problem;

4.     Ensure remedial measures properly implemented;

5.     If exceedance continues, consider what portion of the work is responsible and instruct the Contractor to stop that portion of work until the exceedance is abated.

1.     Take immediate action to avoid further exceedance;

2.     Submit proposals for remedial actions to IEC within 3 working days of notification;

3.     Implement the agreed proposals;

4.     Resubmit proposals if problem still not under control;