CONTENTS

1....... Introduction. 1

1.1        Background. 1

1.2        Purpose of the Updated Environmental Monitoring and Audit (EM&A) Manual 1

1.3        Project Background. 2

1.4        Project Components. 3

1.5        Objective of the EM&A. 3

1.6        Scope of the EM&A Programme. 4

1.7        Works Programme & Works Locations. 5

1.8        Organisation & Structure of the EM&A. 5

1.8.1        Roles & Responsibilities. 6

1.9        Structure of the Updated EM&A Manual 8

2....... Air Quality. 9

2.1        Construction Phase. 9

2.2        Operation Phase. 9

3....... Hazard to Life. 10

4....... Noise. 11

5....... Water Quality. 12

5.1        Introduction. 12

5.2        Sampling & Testing Methodology. 12

5.2.1        Water Quality Parameters. 12

5.2.2        Monitoring Equipment 13

5.2.3        Sampling / Testing Protocols. 14

5.2.4        Laboratory Measurement and Analysis. 14

5.2.5        Monitoring Locations. 16

5.3        Sampling Frequency. 18

5.3.1        Baseline Monitoring. 18

5.3.2        Efficiency of Silt Curtain System.. 18

5.3.3        Construction Phase. 19

5.3.4        Post-Construction Monitoring. 19

5.3.5        Monitoring for Hydrotesting for the Subsea Gas Pipelines. 19

5.3.6        First-year of LNG Terminal Operation. 19

5.3.7        Maintenance Dredging. 20

5.4        Sampling Depths & Replication. 20

5.5        Water Quality Compliance. 20

6....... Waste Management. 24

6.1        Introduction. 24

6.2        Waste Management Practices. 24

6.3        Methodology and Criteria. 25

7....... Ecology. 29

7.1        Introduction. 29

7.2        Marine Mammal Monitoring. 29

7.2.1        Vessel-based Line Transect Survey. 29

7.2.2        Passive Acoustic Monitoring. 32

7.3        Marine Mammal Exclusion Zone Monitoring. 33

7.4        Ecology Mitigation Measures. 33

8....... Fisheries. 34

9....... Visual. 35

10..... Cultural Heritage. 36

11..... Environmental Site Inspection. 37

11.1      Site Inspections. 37

11.2      Compliance with Legal & Contractual Requirements. 37

11.3      Environmental Complaints. 38

11.4      Log-Book. 38

12..... Reporting.. 40

12.1      General 40

12.2      Baseline Monitoring Report 40

12.3      Post-Construction Water Quality Monitoring Report 41

12.4      Post-Construction Marine Mammal Monitoring Report 41

12.5      Monthly EM&A Reports. 42

12.5.1      Contents of First Monthly EM&A Report 42

12.5.2      Contents of the Subsequent Monthly EM&A Reports. 44

12.6      Quarterly EM&A Summary Report 45

12.7      Annual/ Final EM&A Review Reports. 46

12.8      Water Quality Monitoring Report for the First Year of Operation of the LNG Terminal 47

12.9      Data Keeping. 48

12.10    Interim Notifications of Environmental Quality Limit Exceedances. 48

 

Annexes

Annex A         Implementation Schedule

Annex B         Proforma for Construction Phase EM&A Programme

 

List of Tables

Table 5.1        Parameters Measured in the Marine Water Quality Monitoring. 13

Table 5.2        Standard Methods and Corresponding Detection Limits of Marine Water Quality Monitoring. 15

Table 5.3        Location of Water Quality Monitoring Stations  16

Table 5.4        Location of Water Quality Monitoring Station for Hydrotesting for the Subsea Gas Pipelines and Operation Phase. 17

Table 5.5        Action and Limit Level for Water Quality. 20

Table 5.6        Event and Action Plan for Water Quality Monitoring  22

Table 6.1        Waste Management Checklist 27

Table 7.1        Event and Action Plan for Marine Mammal Monitoring  31

Table 7.2        Marine Mammal Exclusion Zone Requirements for Various Activities. 33

 


1.                 Introduction

1.1            Background

To support the increased use of natural gas in Hong Kong from 2020 onwards, Castle Peak Power Company Limited (CAPCO) and The Hongkong Electric Co., Ltd. (HK Electric) have identified that the development of an offshore liquefied natural gas (LNG) receiving terminal in Hong Kong using Floating Storage and Regasification Unit (FSRU) technology (the Project) presents a viable additional gas supply option that will provide energy security through access to competitive gas supplies from world markets.  The Project will involve the construction and operation of an offshore LNG import facility to be located in the southern waters of Hong Kong, a double berth jetty, and subsea pipelines that connect to the gas receiving stations (GRS) at the Black Point Power Station (BPPS) and the Lamma Power Station (LPS).

The Environmental Impact Assessment (EIA) Report for the Project was submitted to the Environmental Protection Department (EPD) of the HKSAR Government in May 2018. The EIA Report (EIAO Register No. AEIAR-218/2018) was approved by EPD and the associated Environmental Permit (EP) (EP-558/2018) was issued in October 2018.  

An application for Further Environmental Permits (FEP) was made on 24 December 2019 to demarcate the works between the different parties.  The following FEPs were issued on 17 January 2020 and the EP under EP-558/2018 was surrendered on 5 March 2020:

    the double berth jetty at LNG Terminal under the Hong Kong LNG Terminal Limited, joint venture between CAPCO and HK Electric (FEP-01/558/2018);

    the subsea gas pipeline for the BPPS and the associated GRS in the BPPS under CAPCO (FEP-03/558/2018); and

    the subsea gas pipeline for the LPS and the associated GRS in the LPS under HK Electric (FEP-02/558/2018). 

This Updated EM&A Manual shall be applicable to fulfilling Condition 2.5 of all three FEPs.

1.2            Purpose of the Updated Environmental Monitoring and Audit (EM&A) Manual

This updated Environmental Monitoring and Audit (EM&A) Manual (the Manual) incorporates the updates to the EM&A activities, including those required under Condition 2.5 of the three FEPs (FEP-01/558/2018, FEP-02/558/2018 and FEP-03/558/2018):

    Ecological monitoring on marine mammals (detailed in Section 7.2);

    Event/ Action Plan for the ecological monitoring (detailed in Section 7.2);

    Environmental monitoring for commissioning hydrotest for the subsea gas pipelines (detailed in Section 5.3.5); and

    Implementation Schedule for the recommended measures in the approved EIA Report (EIAO Register No. AEIAR-218/2018) (provided in Annex A).

The Manual is a supplementary document to the EIA Report of the Project and has been prepared in accordance with the EIA Study Brief (No. ESB-292/2016), the Technical Memorandum of the Environmental Impact Assessment Process (EIAO-TM) and the FEPs.  The purpose of the Manual is to provide information, guidance and instruction to personnel charged with environmental duties and those responsible for undertaking EM&A work during Project construction and operation.  It provides systematic procedures for monitoring and auditing the environmental performance of the Project.

This Manual contains the following information:

    Responsibilities of the Contractor(s) for Project construction, Environmental Team (ET), and the Independent Environmental Checker (IEC) with respect to the EM&A requirements during the course of the Project;

    Project organisation;

    Requirements with respect to the construction and operational programme schedule and the necessary EM&A programme to track the environmental impact;

    Details of the methodologies to be adopted including field, laboratory and analytical procedures, and details on quality assurance and quality control programme;

    Definition of Action and Limit levels;

    Establishment of Event and Action plans;

    Requirements for reviewing pollution sources and working procedures required in the event of exceedances of applicable environmental criteria and/or receipt of complaints;

    Requirements for presentation of EM&A data and appropriate reporting procedures; and

    Requirements for review of EIA predictions and the effectiveness of the mitigation measures/environmental management systems and the EM&A programme.

1.3            Project Background

CLP Power Hong Kong Limited (CLP) and HK Electric are both responsible for providing a safe, highly reliable and clean supply of electricity to Hong Kongs population at reasonable cost. 

CLP operates three power stations that supply electricity to the population in Kowloon, the New Territories and most of the outlying islands, namely the Castle Peak Power Station (CPPS), the BPPS and the Pennys Bay Power Station (PBPS) which are owned by the CAPCO, a joint venture between CLP and China Southern Power Grid International (HK) Co., Limited, of which CLP holds a 70% interest. 

HK Electric operates the LPS that supplies electricity to the population on Hong Kong and Lamma Island.

Hong Kong has no indigenous energy resources and all energy for Hong Kong needs to be imported.  Dependable fuel sources are critical to maintaining reliable power supply for the Hong Kong population, while providing environmental benefits.  The Hong Kong Special Administrative Region (HKSAR) Government plans to increase the percentage of natural gas used for power generation to around 50 per cent by 2020 to meet its pledged environmental targets. 

The Hong Kong Climate Action Plan 2030+ Report states that the HKSAR Government will work closely with CLP and HK Electric; to ensure they can secure adequate supplies of natural gas and put the required infrastructure in place in the coming decade to handle the larger quantities of natural gas that will be required to be imported into Hong Kong in order to meet these HKSAR Government emissions targets.

To support the HKSAR Government in the increased use of natural gas in Hong Kong to reduce carbon intensity from 2020 onwards, CLP and HK Electric have identified that the development of an offshore LNG receiving terminal in Hong Kong based on Floating Storage and Regasification Unit (FSRU) technology presents an additional gas supply option that will provide long-term energy security for Hong Kong, as well as access to competitive gas supplies from world markets.

The purpose of CLP and HK Electrics current proposal is to consider the development of an offshore LNG receiving terminal (LNG Terminal) in Hong Kong based on FSRU technology that is located in HKSAR waters to serve as a gas supply source to meet Hong Kongs future power generation fuel supply needs (hereinafter referred to as the Hong Kong Offshore LNG Terminal or the Project).  The Project will increase CLP and HK Electrics options regarding the sourcing of future gas supplies for Hong Kong, and provide the flexibility to directly access competitively priced gas from the global LNG market, including its associated spot market, therefore improving the Hong Kong LNG buyers future negotiating position, and diversity of gas supply sources.  The Project is planned to be a shared-use import facility that has the capability to receive and store LNG and then deliver regasified LNG (natural gas) by subsea pipeline to the BPPS and the LPS.

The implementation of this Project is therefore a critical step for ensuring a gas supply source is made available to meet Hong Kongs future power generation fuel supply needs and supporting air quality improvements and environmental performance in Hong Kong. 

1.4            Project Components

The Project is comprised of the following key components which are discussed in detail in Section 3 of the EIA Report:

    An offshore LNG receiving terminal (LNG Terminal) that comprises of the Jetty and the FSRU Vessel, under FEP-01/558/2018;

    Two subsea gas pipelines, namely:

o        The BPPS Pipeline, connecting the LNG Terminal with the GRS at the Black Point Power Station (BPPS), under FEP-03/558/2018; and

o        The LPS Pipeline, connecting the LNG Terminal with the GRS at the Lamma Power Station (LPS), under FEP-02/558/2018;

    The gas receiving station (GRS) facilities, namely:

o        The GRS located within the BPPS, under FEP-03/558/2018; and

o        The GRS located within the LPS, under FEP-02/558/2018.

The location of these components is shown in Figures 1.1 to 1.3

The following elements of the Project are classified as Designated Projects under the Environmental Impact Assessment Ordinance (EIAO) (Cap. 499):

    Construction of a storage, transfer and trans-shipment facility of liquefied natural gas with a storage capacity of not less than 200 tonnes (Item L.2 of Part I of Schedule 2 of EIAO) (under FEP-01/558/2018);

    Dredging operations for the construction and maintenance of the LNG Terminal Jetty (under FEP-01/558/2018), the construction of the BPPS Pipeline and the LPS Pipeline that exceeds 500,000m3 or are less than 500m from the nearest boundary of an existing or planned marine park (Item C.12 of Part I of Schedule 2 of EIAO) (under FEP-03/558/2018 and FEP-02/558/2018 respectively); and

    Construction of the subsea gas BPPS Pipeline and LPS Pipeline connecting the LNG Terminal with the GRS at the BPPS and the GRS at the LPS (Item H.2 of Part I of Schedule 2 of EIAO) (under FEP-03/558/2018 and FEP-02/558/2018 respectively).

1.5            Objective of the EM&A

The broad objective of this Manual is to define the procedures of the EM&A programme for monitoring the environmental performance of the Project during design, construction and operation.  The construction and operational impacts arising from the implementation of the Project are specified in the EIA Report.  The EIA Report also specifies mitigation measures and construction practices that may be needed to confirm compliance with the environmental criteria.  These mitigation measures and their implementation requirements are presented in the Implementation Schedule of Mitigation Measures (Annex A).

The main objectives of the EM&A programme are to:

    provide a database of environmental parameters against which to determine any short term or long term environmental impacts;

    provide an early indication should any of the environmental control measures or practices fail to achieve the acceptable standards;

    confirm that the mitigation recommendations of the EIA are included in the design of the Project;

    clarify and identify potential sources of pollution, impact and nuisance arising from the works for the responsible parties;

    confirm compliance with regulatory requirements, contract specifications and EIA study recommendations;

    confirm compliance of environmental designs during the design phase of the Project with the specifications stated in the EIA Report and the Environmental Permit (EP)/ Further Environmental Permits (FEPs);

    monitor performance of the mitigation measures and to assess their effectiveness;

    take remedial action if unexpected issues or unacceptable impacts arise;

    verify the environmental impacts predicted in the EIA; and

    audit environmental performance.

This EM&A Manual is a working document which will be reviewed periodically and updated if necessary during the course of implementing the project.

1.6            Scope of the EM&A Programme

The scope of this EM&A programme is to:

    establish baseline water quality levels at specified locations and implement monitoring requirements for water quality monitoring programme;

    implement monitoring requirements for marine mammal monitoring programme;

    implement inspection and audit requirements for waste management;

    liaise with, and provide environmental advice (as requested or when otherwise necessary) to construction site staff on the significance and implications of the environmental monitoring data;

    identify and resolve environmental issues and other functions as they may arise from the works;

    check and quantify the Contractor(s)s overall environmental performance, implementation of Event and Action Plans (EAPs), and remedial actions taken to mitigate adverse environmental effects as they may arise from the works;

    conduct regular reviews of monitored impact data as the basis for assessing compliance with the defined criteria and to verify that necessary mitigation measures are identified and implemented, and to undertake additional ad hoc monitoring and auditing as required by special circumstances;

    evaluate and interpret environmental monitoring data to provide an early indication should any of the environmental control measures or practices fail to achieve the acceptable standards, and to verify the environmental impacts predicted in the EIA;

    manage and liaise with other individuals or parties concerning other environmental issues deemed to be relevant to the construction process;

    conduct regular site inspections and audits of a formal or informal nature to assess:

(i)              the level of the Contractor(s)s general environmental awareness;

(ii)             the Contractor(s)s implementation of the recommendations in the EIA and their contractual obligations;

(iii)            the Contractor(s)s performance as measured by the EM&A;

(iv)           the need for specific mitigation measures to be implemented or the continued usage of those previously agreed;

(v)             to advise the site staff of any identified potential environmental issues; and

    produce monthly EM&A reports which summarise project monitoring and auditing data, with full interpretation illustrating the acceptability or otherwise of any environmental impacts and identification or assessment of the implementation status of agreed mitigation measures.

1.7            Works Programme & Works Locations

The preliminary construction programme is given in Figure 1.4.  The locations of works are shown in Figures 1.1 to 1.3.

Figure 1.4   Preliminary Construction Programme of the Project

 

 

 

1.8            Organisation & Structure of the EM&A

The EM&A will require the involvement of the Project Proponents (HKLTL / HK Electric / CAPCO, under the three FEPs), Environmental Team (ET), Independent Environmental Checker (IEC) and the Contractor(s).  The roles and responsibilities of the various parties involved in the EM&A process are further expanded in the following sections and in Figure 1.5.


 

Figure 1.5   Indicative Project Organisation Chart

 

 

The Project Proponents will appoint ET to conduct the site inspection and monitoring and, to provide specialist advice on the undertaking and implementation of environmental responsibilities.  The ET will be led and managed by the ET Leader (ETL).  The ETL will have relevant education, training, knowledge, experience and professional qualifications.  Suitably qualified staff will be included in the ET, and the ET should not be in any way an associated body of the Contractor(s) for Project construction.  For the purpose of this Manual, the ETL, who will be responsible for, and in charge of, the ET, is referred to as the person delegated the role of executing the EM&A requirements.

To maintain strict control of the EM&A process, the Project Proponents will appoint independent environmental consultants to act as IEC to verify and validate/ audit the environmental performance of the Project Proponents Contractor(s) for Project construction and effectiveness of ET.  The IEC will have previous relevant experience with checking and auditing similarly sized EM&A programmes and the IEC will be a recognised environmental professional.  Sufficient and suitably qualified professional and technical staff will be employed by the IEC, as required under the EM&A programme for the duration of the Project.

1.8.1       Roles & Responsibilities

The Project Proponents will:

    employ ET as described above;

    employ IEC as described above;

    supervise the Contractor(s) activities and confirm that the requirements in the EM&A Manual are fully complied with;

    inform the Contractor(s) when action is required to reduce impacts in accordance with the Event and Action Plans;

    adhere to the procedures for carrying out complaint investigation; and

    participate in joint site inspections undertaken by the ET and IEC.

The Contractor(s) for Project construction will:

    implement the EIA recommendations and requirements where applicable;

    provide assistance to the ET in carrying out monitoring and site inspections;

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

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

    implement the corrective actions instructed by the Project Proponents/ET/IEC;

    participate in the site inspections undertaken by the ET and the IEC, as required, and undertake any corrective actions instructed by the Project Proponents/ETL/IEC; and

    adhere to the procedures for carrying out complaint investigation.

The ET will:

    monitor various environmental parameters as required in this EM&A Manual;

    assess the EM&A data and review the success of the EM&A programme determining the adequacy of the mitigation measures implemented and the validity of the EIA predictions as well as identify any adverse environmental impacts before they arise;

    carry out regular site inspection to investigate the Contractor(s)s site practice, equipment and work methodologies with respect to pollution control and environmental mitigation, and effect proactive action to pre-empt issues;

    review the Contractor(s)s working programme and methodology, and comment as necessary;

    review and prepare reports on the environmental monitoring data and site environmental conditions;

    report on the environmental monitoring results and conditions to the IEC, Contractor(s), EPD and the Project Proponents;

    recommend suitable mitigation measures and/or review the proposals of mitigation measure from the Contractor(s) in the case of exceedance of Action and Limit levels in accordance with the Event and Action Plans; and

    adhere to the procedures for carrying out complaint investigation.

The IEC will:

    review and audit the implementation of the EM&A programme and the overall level of environmental performance being achieved;

    arrange and conduct regular independent site audits of the works;

    validate and confirm the accuracy of monitoring results, monitoring equipment, monitoring stations, monitoring procedures and locations of sensitive receivers;

    audit the EIA recommendations and requirements against the status of implementation of environmental protection measures on site;

    on an as needed basis, audit the Contractor(s)s construction methodology and agree the appropriate, reduced impact alternative in consultation with the Project Proponents, the ET and the Contractor(s);

    adhere to the procedures for carrying out complaint investigation;

    review the effectiveness of environmental mitigation measures and project environmental performance including the proposed corrective measures;

    review EM&A report submitted by the ETL and feedback audit results to ET by signing off relevant EM&A proformas; and

    report the findings of site audits and other environmental performance reviews to the Project Proponents, ET, EPD and the Contractor(s).

1.9            Structure of the Updated EM&A Manual

The remainder of the Manual is set out as follows:

    Section 2 sets out the EM&A requirements for air quality;

    Section 3 sets out the EM&A requirements for hazard to human life;

    Section 4 sets out the EM&A requirements for noise;

    Section 5 details the EM&A requirements for water quality baseline and impact monitoring, and lists relevant monitoring equipment, compliance and Event and Action Plans (EAPs);

    Section 6 details the EM&A requirements for waste management;

    Section 7 details the EM&A requirements for ecology;

    Section 8 details the EM&A requirements for fisheries;

    Section 9 sets out the EM&A requirements for visual;

    Section 10 sets out the EM&A requirements for cultural heritage;

    Section 11 describes the scope and frequency of site environmental inspection;

    Section 12 details the reporting requirements for the EM&A;

    Annex A contains the implementation schedule summarising all mitigation measures proposed in the EIA Report; and

    Annex B contains the proforma for the EM&A programme, including monitoring and complaint log sheets.


 

2.                 Air Quality

2.1            Construction Phase

The EIA Study concluded that no adverse fugitive dust impact is anticipated during the construction phase, and dust monitoring is considered not necessary.  However, it is recommended to conduct regular environmental site inspections, i.e. on a monthly basis, at the GRSs at the BPPS and the LPS to check the implementation of the dust control measures and good site practices as recommended in Section 4.10.1 of the EIA Report throughout the construction phase.

These measures are also summarised in the Implementation Schedule provided in Annex A.

2.2            Operation Phase

No adverse air quality impact is anticipated during the operation of the GRSs at the BPPS or the LPS.  Environmental monitoring and audit during the operation phase is not considered necessary.

3.                 Hazard to Life

This EIA Study concluded that no unacceptable risks are foreseen as a result of the construction and operation of the proposed Project with safety management measures and safety systems outlined in Section 5.3.3 and Annex 5B of the EIA Report in place to further manage and minimise the external hazards from construction and operational activities. 

For operation of the LNG Terminal, implementation of safety management measures and safety systems outlined in Section 5.3.3 and Annex 5B of the EIA Report is recommended, including conducting safety inspections and audits.

These safety measures are summarised in the Implementation Schedule provided in Annex A.


4.                 Noise

The EIA study of the Project concluded that no unacceptable impacts will be associated with the construction or operation of the Project.  Based on this, no construction or operational noise monitoring is considered necessary.  Nevertheless, regular site inspections and audits are recommended to be carried out during the construction phase in order to confirm that regulatory requirements are being met.


5.                 Water Quality

5.1            Introduction

A number of mitigation measures and standard site practice measures for marine and land-based construction activities have been recommended to reduce potential impacts to water quality sensitive receivers.  These measures are summarised in the Implementation Schedule provided in Annex A.

In accordance with the recommendations of the EIA, water quality EM&A is required during construction phase and operation phase.  The following sections provide details of the water quality monitoring to be undertaken by the ET to detect any deterioration of water quality and indirect impacts at water and ecological sensitive receivers.  The water quality monitoring programme will be carried out to allow any deteriorating water quality to be readily detected and timely action taken to rectify the situation.  The status and locations of water quality sensitive receivers and the marine works location may change after issuing this Manual.  If required, the ET in consultation with the IEC will propose updated monitoring locations and seek approval from EPD.

Water quality monitoring for the Project can be divided into the following stages:

    Marine water quality monitoring for dredging and jetting activities during construction phase of the BPPS Pipeline and the LPS Pipeline;

    Verification of efficiency of silt curtain systems;

    Marine water quality monitoring for hydrotesting for the subsea gas pipelines;

    Marine water quality monitoring at selected nearby location during the first year of operation of the LNG Terminal ([1]); and

    Marine water quality monitoring for maintenance dredging during operation phase of the LNG Terminal.

5.2            Sampling & Testing Methodology

5.2.1       Water Quality Parameters

The parameters that have been selected for measurement in situ and in the laboratory are those that were either determined in the EIA to be those with the highest potential to be affected by the construction works or are a standard check on water quality conditions.  Parameters to be measured in the construction phase and operation phase are listed in Table 5.1.

Table 5.1     Parameters Measured in the Marine Water Quality Monitoring

Parameters

Unit

Abbr.

Marine Water Quality Monitoring

Baseline

Construction Phase and Maintenance Dredging for Jetty

Hydrotesting for the Subsea Gas Pipelines

First-year Operation

In situ measurements

 

 

Dissolved oxygen

mg/L

DO

Dissolved oxygen saturation

%

DOS

Temperature

C

-

pH

-

-

Turbidity

NTU

-

 

Salinity

-

Total Residual Chlorine

mg/L

TRC

 

 

Laboratory measurements

 

 

Suspended Solids (SS)

mg/L

SS

 

Total Inorganic Nitrogen (TIN)

mg/L

TIN

 

 

 

5-day Biochemical Oxygen Demand (BOD5)

mg/L

BOD5

 

 

 

 

 

In addition to the water quality parameters, other relevant data will also be measured and recorded in Water Quality Monitoring Logs, including the location of the monitoring stations, water depth, time, weather conditions, sea conditions, tidal state, current direction and velocity, special phenomena and work activities undertaken around the monitoring and works area that may influence the monitoring results.  A sample data record sheet is shown in Annex B for reference.

5.2.2       Monitoring Equipment

For water quality monitoring, the following equipment will be used:

   Dissolved Oxygen and Temperature Measuring Equipment - The instrument will be a portable, weatherproof dissolved oxygen measuring instrument complete with cable, sensor, comprehensive operation manuals, and will be operable from a DC power source.  It will be capable of measuring: dissolved oxygen levels in the range of 0 - 20 mg L-1 and 0 - 200% saturation; and a temperature of 0 - 45 degrees Celsius.  It will have a membrane electrode with automatic temperature compensation complete with a cable of not less than 35m in length.  Sufficient stocks of spare electrodes and cables will be available for replacement where necessary. 

   Turbidity Measurement Equipment - The instrument will be a portable, weatherproof turbidity-measuring unit complete with cable, sensor and comprehensive operation manuals.  The equipment will be operated from a DC power source, it will have a photoelectric sensor capable of measuring turbidity between 0 - 1000NTU and will be complete with a cable with at least 35m in length. 

   pH Measurement Instrument - A portable pH meter capable of measuring a range between 0.0 and 14.0 will be provided for measuring pH.

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

   Water Depth Gauge A portable, battery-operated echo sounder will be used for the determination of water depth at each designated monitoring station.  This unit will preferably be affixed to the bottom of the work boat if the same vessel is to be used throughout the monitoring programme. 

   Current Velocity and Direction Acoustic Doppler Current Profilers (ADCP) will be used for measuring the current velocity and direction. 

   Positioning Device A hand-held or boat-fixed type differential Global Positioning System (dGPS) with way point bearing indication or other equivalent instrument of similar accuracy will be used to check that the monitoring vessel is at the correct location before taking measurements. 

   Water Sampling Equipment - A water sampler, consisting of a PVC or glass cylinder of not less than two litres, which can be effectively sealed with cups at both ends, will be used.  The water sampler will have a positive latching system to keep it open and prevent premature closure until released by a messenger when the sampler is at the selected water depth.  A rosette multibottle (each bottle with no less than two litres volume) array water sampler could be used for the monitoring.  With the use of this equipment, the sonde for measuring in situ water quality parameters could be attached together and the closure of each water sampler could be controlled remotely at the required sampling depth without the need to release messenger physically.  This could enhance safety of the water quality monitoring especially at offshore locations where the sea condition could be rough.

   Total Residual Chlorine - Total residual chlorine (TRC) shall be measured in situ using an approved test kit.  The ET proposed and the IEC approved to use a portable test kit which is capable of detecting total chlorine level between 0.001 - 0.500 mg/L or equivalent.  Calibration check set recommended by the test kit manufacturer will also be used to check the equipment as part of QA/QC procedures.

5.2.3       Sampling / Testing Protocols

In situ monitoring equipment for the measurement of temperature, dissolved oxygen, turbidity, pH and salinity will be checked, calibrated and certified by a laboratory accredited under the Hong Kong Laboratory Accreditation Scheme (HOKLAS) or any other international accreditation scheme before use, except the test kit for TRC will be checked against the calibration check set provided by the manufacturer before commencement of monitoring.  The in situ monitoring equipment for the measurement of temperature, dissolved oxygen, turbidity, pH and salinity will be subsequently re-calibrated every three months throughout the stages of the water quality monitoring.  Responses of sensors and electrodes will be checked with certified standard solutions before each use.  Wet bulb calibration for dissolved oxygen meter will be carried out before commencement of monitoring and after completion of all measurements each day.

On-site calibration of field equipment will follow the Guide to On-Site Test Methods for the Analysis of Waters, BS 1427: 2009.  Sufficient stocks of spare parts will be maintained for replacements when necessary.  Backup monitoring equipment will also be made available so that monitoring can proceed uninterrupted even when equipment is under maintenance, calibration etc.

5.2.4       Laboratory Measurement and Analysis

All laboratory work shall be carried out in a HOKLAS accredited laboratory.  Sufficient volume of each water sample shall be collected at the monitoring stations for carrying out the laboratory analyses.  Using chain of custody forms, collected water samples will be transferred to an HOKLAS accredited laboratory for immediate processing.  The determination work for SS, TIN and BOD5 shall start within 24 hours after collection of the water samples.  The laboratory measurements shall be provided to the client as soon as the results are available.  Analytical methodology and sample preservation of monitoring parameters will be based on the latest edition of Standard Methods for the Examination of Waste and Wastewater published by American Public Health Association (APHA), American Water Works Association (AWWA) and methods by USEPA, or suitable method in accordance with requirements of HOKLAS or another internationally accredited scheme.  The submitted information should include pre-treatment procedures, instrument use, Quality Assurance/Quality Control (QA/QC) details (such as blank, spike recovery, number of duplicate samples per-batch etc.), detection limits and accuracy.  The QA/QC details shall be in accordance with requirements of HOKLAS or another internationally accredited scheme.

Parameters for laboratory measurements, their standard methods and their detection limits are presented in Table 5.2.

Table 5.2     Standard Methods and Corresponding Detection Limits of Marine Water Quality Monitoring

Parameters

Standard Methods

Detection Limit

Reporting Limit

Baseline

Dissolved oxygen (mg L-1)

Instrumental, CTD

0.1

Temperature (C)

Instrumental, CTD

0.1

pH

Instrumental, CTD

0.1

Turbidity (NTU)

Instrumental, CTD

0.1

Salinity ()

Instrumental, CTD

0.1

SS (mg L-1)

APHA 2540E

1.0

TRC (mg L-1)

Test-kit *

0.001

*

Construction Phase and Maintenance Dredging

Dissolved oxygen (mg L-1)

Instrumental, CTD

0.1

Temperature (C)

Instrumental, CTD

0.1

pH

Instrumental, CTD

0.1

Turbidity (NTU)

Instrumental, CTD

0.1

Salinity ()

Instrumental, CTD

0.1

SS (mg L-1)

APHA 2540E

1.0

Hydrotesting for the Subsea Gas Pipelines

Dissolved oxygen (mg L-1)

Instrumental, CTD

0.1

Temperature (C)

Instrumental, CTD

0.1

pH

Instrumental, CTD

0.1

Turbidity (NTU)

Instrumental, CTD

0.1

Salinity ()

Instrumental, CTD

0.1

Operation Phase

Dissolved oxygen (mg L-1)

Instrumental, CTD

0.1

Temperature (C)

Instrumental, CTD

0.1

pH

Instrumental, CTD

0.1

Turbidity (NTU)

Instrumental, CTD

0.1

Salinity ()

Instrumental, CTD

0.1

SS (mg L-1)

APHA 2540E

1.0

TIN (mg L-1)

By calculation

(APHA 22ed 4500-NO2- B (FIA),

APHA 22ed 4500-NO3- I(FIA),

ASTM D3590-11 B (FIA))

0.02

BOD5 (mg L-1)

APHA 5210b

0.1

TRC (mg L-1)

Test-kit *

0.001 *

*Note: The testing methods, Quality Assurance/Quality Control (QA/QC) details, detection limits and accuracy shall be submitted by ET to IEC for agreement prior to the commencement of monitoring programme.  A portable test kit which is capable of detecting total chlorine level between 0.001 - 0.500 mg/L or equivalent.  Calibration check set recommended by the test kit manufacturer will also be used to check the equipment as part of QA/QC procedures.

5.2.5       Monitoring Locations

The water quality monitoring locations for baseline, construction, post-construction, and first-year operation phases are shown in Figure 5.1 and the locations for hydrotesting for the subsea gas pipelines is shown in Figure 5.2 and detailed in Table 5.3 and Table 5.4 below.  A schedule for water quality monitoring shall be prepared by the ET and approved by IEC and EPD prior to the commencement of the monitoring.

Table 5.3      Location of Water Quality Monitoring Stations

Station

Easting

Northing

Description

Baseline

Construction and Post-Construction

During construction at the pipeline shore approach at LPS (KP18.2-17.4), West Lamma Channel (KP14.5-17.4)

IM1

829453

806896

Impact Station for Coastline of South Lamma

IM2

828235

810347

Impact Station for Coastline of North Lamma

E1

827317

811510

Control Station for Ebb Tide

F1

827892

804243

Control Station for Flood Tide

During construction at the Double Berth Jetty to West Lamma Channel (KP0.0-14.5)

IM3

820683

805931

Impact Station for Coastline of South Cheung Chau

IM4

816997

805153

Impact Station for Coastline of South Shek Kwu Chau

IM5

814068

804100

Boundary of Proposed South Lantau Marine Park (MP)

IM6

814073

802029

Boundary of Proposed South Lantau MP

E2

813367

808213

Control Station for Ebb Tide

F2

822532

802161

Control Station for Flood Tide

F3

815032

801161

Control Station for Flood Tide

During construction at the Jetty Approach (KP0.0 5.0), South of Soko Islands (KP5.0 8.9), Southwest of Soko Islands (KP8.9 - 12.1)

IM6

814073

802029

Boundary of Proposed South Lantau MP

IM7

811652

802029

Boundary of Proposed South Lantau MP

IM8

810833

801430

Boundary of Proposed South Lantau MP

IM9

807101

801595

Boundary of Proposed South Lantau MP

E3

802686

804123

Control Station for Ebb Tide

F3

815032

801161

Control Station for Flood Tide

During construction at the Adamasta Channel (KP12.1 - 15.6), Southwest Lantau (KP15.6 - 21.3)

IM10

803145

806407

Boundary of Southwest Lantau MP

IM11A

801914

806510

Boundary of Southwest Lantau MP

IM12

801041

807024

Boundary of Southwest Lantau MP

IM13

800386

810750

Boundary of Southwest Lantau MP

IM14

801376

810750

Boundary of Southwest Lantau MP

E4

801571

811923

Control Station for Ebb Tide

F4

809058

806567

Control Station for Flood Tide

During construction at the West of Tai O to West of HKIA (KP21.3 31.5)

IM15

804820

821110

Boundary of Sha Chau and Lung Kwu Chau MP

E5

804634

822606

Control Station for Ebb Tide

F5

805185

816591

Control Station for Flood Tide

During construction at the West of HKIA to Lung Kwu Chau (KP31.5 37.5)

IM15

804820

821110

Boundary of Sha Chau and Lung Kwu Chau MP

IM17

804865

827855

Boundary of Sha Chau and Lung Kwu Chau MP

IM16A

805039

824343

Coral Colonies at Pak Chau

E6

805418

832113

Control Station for Ebb Tide

F5

805185

816591

Control Station for Flood Tide

During construction at the Lung Kwu Chau to Urmston Anchorage (37.5 - 41.1), Urmston Road (KP41.1 42.9)

IM17

804865

827855

Boundary of Sha Chau and Lung Kwu Chau MP

IM18

806220

827890

Boundary of Sha Chau and Lung Kwu Chau MP

IM19

807274

829250

Impact Station for Coastline of Lung Kwu Tan

E6

805418

832113

Control Station for Ebb Tide

F6

808812

824266

Control Station for Flood Tide

E5

804634

822606

Control Station for Flood Tide

During construction at the West of BPPS (KP42.9 - 44.9), Pipeline shore approach at BPPS (KP44.9 - 45.0)

IM19

807274

829250

Impact Station for Coastline of Lung Kwu Tan

IM20A

809445

831728

Impact Station for Coastline of Deep Bay

IM21A

808879

830900

Coral Colony at Artificial Seawall at BPPS

IM22A

808703

830717

Coral Colony at Artificial Seawall at BPPS

E7A

808313

833524

Control Station for Ebb Tide

F6

808812

824266

Control Station for Flood Tide

Note: 

(1)    TRC will be measured only at monitoring stations IM6, F3 and E2 during baseline monitoring for the purpose of comparing against the operation phase monitoring.

(2)    Alternative monitoring stations (E7A, IM11A, IM16A, IM20A, IM21A and IM22A) were proposed by the ET in consultation with the IEC and approved by EPD in accordance with the provision in Section 5.1 and Section 5.2.5 of the EM&A Manual.

 

Table 5.4      Location of Water Quality Monitoring Station for Hydrotesting for the Subsea Gas Pipelines and Operation Phase

Station

Easting

Northing

Description

Hydrotesting for the Subsea Gas Pipelines

Operation

Maintenance Dredging

First Year of LNG Terminal

During operation phase

 

 

IM6

814073

802029

Boundary of Proposed South Lantau MP

F3

815032

801161

Control Station for Flood Tide

(during Flood Tide)

E2

813367

808213

Control Station for Ebb Tide

(during Ebb Tide)

 

The status and locations of water quality sensitive receivers and the monitoring sites may change after issuing this Manual.  If such cases exist, the ET in consultation with the IEC will propose updated monitoring locations and seek approval from EPD.  The above exercise of reviewing the list of water quality monitoring stations should be conducted prior to each maintenance dredging.

When alternative monitoring locations are proposed, they shall be chosen based on the following criteria:

     at locations close to and preferably at the boundary of the site activities as indicated in the EIA Report, which are likely to have water quality impacts;

     close to the sensitive receptors which are directly or likely to be affected;

     for monitoring locations located in the vicinity of the sensitive receptors, care should be taken to cause minimal disturbance during monitoring; and

     control stations which are at locations representative of the project site in its undisturbed condition.

5.3            Sampling Frequency

5.3.1       Baseline Monitoring

Baseline conditions for water quality shall be established and agreed with the IEC and the EPD prior to the commencement of marine construction works for the BPPS Pipeline and the LPS Pipeline.  The purpose of the baseline monitoring is to establish ambient conditions prior to the commencement of the marine construction works and to demonstrate the suitability of the proposed control monitoring stations.  The baseline conditions shall normally be established by measuring the water quality parameters specified above.

The measurements shall be taken at all designated monitoring stations including control stations, at both mid-ebb and mid-flood tides for a minimum of three days per week for four weeks prior to the commencement of the marine construction works.  Measurements shall be taken at each station at any time.  The interval between two sets of monitoring shall not be less than 36 hours.

No construction activities of the Project shall be on-going in the vicinity of the stations during the baseline monitoring.  The ET shall be responsible for undertaking the baseline monitoring and shall consider if baseline monitoring needs to be extended or repeated to take into account the seasonal variations in water quality, and seek agreement with the IEC and EPD.  In exceptional cases when insufficient baseline monitoring data or questionable results are obtained, the ET shall seek agreement with the IEC and the EPD on an appropriate set of data to be used as baseline reference.

The baseline monitoring schedule shall be issued to the IEC and EPD at least 2 weeks before the first day of the monitoring event for agreement.  The baseline water quality conditions shall be established and agreed with EPD before commencement of marine construction works.  EPD shall also be notified immediately for any changes in schedule.

5.3.2       Efficiency of Silt Curtain System

Different silt curtain arrangements have been recommended for marine dredging and jetting works under this Project, including (1) single silt curtain at grab dredger (with silt removal efficiency of 75%), (2) silt curtain at jetting machine (with silt removal efficiency of 85%) and (3) double layer of silt curtains at sensitive receivers (with silt removal efficiency of 80%).  The ET shall conduct pilot tests to confirm the efficiency of the silt curtain system to be adopted to satisfy the requirements in the EIA Report.

At the early stage of marine dredging and jetting works, the ET shall prepare the methodology for such pilot test for determination of silt removal efficiency of different silt curtain systems required, for agreement with the IEC and the EPD.

Regardless of the measured efficiency of the silt curtain system, the Event and Action Plan shall only be based on the monitoring results at the proposed monitoring stations.

5.3.3       Construction Phase

During periods when there are pipeline dredging or jetting works, impact monitoring shall be undertaken at the monitoring stations as shown in Figure 5.2 and Table 5.3 three times a week.  Monitoring at each station would be undertaken at both mid-ebb and mid-flood tides.  The interval between two sets of monitoring would not be less than 36 hours.  The monitoring frequency would be increased in the case of exceedances of Action/Limit Levels if considered necessary by ET.  Monitoring frequency would be maintained as far as practicable. 

The monitoring location/position, time, water depth, water temperature, salinity, weather conditions, sea conditions, tidal state, special phenomena and work underway at the marine works site will be recorded.

5.3.4       Post-Construction Monitoring

Upon completion of all marine construction activities, a post-construction water quality monitoring exercise would be carried out for four weeks, in the same manner as the baseline monitoring, except TRC would not be measured during post-construction monitoring.

5.3.5       Monitoring for Hydrotesting for the Subsea Gas Pipelines

Based on the latest design of hydrotesting procedure for the two subsea gas pipelines, seawater added with corrosion inhibitor compound WFT9371 from Weatherford or equivalent, would be used for hydrotesting and the discharge concentration would be less than 10 mg/L.  As discussed in the EIA Report, the discharge of hydrotest water may result in DO depletion but toxicity-related water quality impact would not be expected from the discharge of hydrotest water.  The hydrotest water will be injected into the two subsea gas pipelines from the respective GRS facilities and discharged at the pipeline risers at the double berth jetty.

Measurement of water quality parameters as stated in Table 5.1 will be conducted before, during and after discharge of hydrotest water for the two subsea gas pipelines at the nearest sensitive receiver (i.e. IM6) and nearby control station(s) (i.e. E2 and / or F3 depending on the tidal state) (see Table 5.4 and Figure 5.2).  The details of sampling depths and replication are discussed in Section 5.4.  The monitoring location/position, time, water depth, water temperature, salinity, weather conditions, sea conditions, tidal state, special phenomena and work underway around the monitoring stations will be recorded.

The monitoring frequency is subject to further review upon receiving the detailed hydrotesting procedures and schedule from the Contractor(s).  The Action and Limit Levels and the Event and Action Plan for the hydrotesting of the subsea gas pipelines will also be developed by ET and agreed with IEC and EPD prior to commencement of the hydrotesting.

5.3.6       First-year of LNG Terminal Operation

Upon commencement of the LNG Terminals operation, an operation phase water quality monitoring exercise shall be carried out for one year, in the same manner as the baseline monitoring except at a frequency of once per week.  Monitoring shall be conducted at proposed locations stated in Table 5.4.  In case of non-compliance, suitable actions shall be undertaken to notify the plant operator for the non-compliance and identify the cause for the non-compliance.  Corrective and remedial actions shall be implemented to improve the effluent quality.  The non-compliance events and preventive measures shall be documented.  This discharge is subject to the control under WPCO.  Thus, a licence under WPCO should be obtained in due course.

5.3.7       Maintenance Dredging

In case maintenance dredging at the LNG Terminal is required, the same water quality monitoring exercise, including baseline monitoring (Section 5.3.1), impact monitoring (Section 5.3.3) and post-construction monitoring (Section 5.3.4) shall be conducted before, during and after the dredging works.  Monitoring shall be conducted at proposed locations stated in Table 5.4.

5.4            Sampling Depths & Replication

For baseline, construction phase, monitoring for hydrotesting for the subsea gas pipelines and operation phase monitoring, each applicable station will be sampled and measurements/ water samples will be taken at three depths, 1m below the sea surface, mid-depth and 1m above the seabed.  For stations that are less than 3m in depth, only the mid-depth sample shall be taken.  For stations that are less than 6m in depth, only the surface and bottom samples shall be taken.  For in situ measurements, duplicate readings shall be made at each water depth at each station.  Duplicate water samples shall be collected at each water depth at each station.

5.5            Water Quality Compliance

Water quality monitoring will be evaluated against Action and Limit Levels.  The key assessment parameters are dissolved oxygen (DO), temperature, suspended solids (SS), total inorganic nitrogen (TIN), biochemical oxygen demand (BOD5) and total residual chlorine (TRC), and thus Action and Limit Levels based on the assessment criteria are identified for these.  However, turbidity can also provide valuable instantaneous information on water quality and thus Action and Limit Levels are also recommended for this parameter to facilitate quick responsive action in the event of any apparent unacceptable deterioration attributable to the works.  The proposed Action and Limit Levels are shown in Table 5.5.

Action and Limit levels are used to determine whether operational modifications are necessary to mitigate impacts to water quality.  In the event that the levels are exceeded, appropriate actions in Event and Action Plan (Table 5.6) should be undertaken and a review of works will be carried out by the Contractor(s). 

Any noticeable change to water quality will be recorded in the monitoring reports and will be investigated and remedial actions will be undertaken to reduce impacts.  Particular attention will be paid to the Contractor(s)s implementation of the recommended mitigation measures.

Site audit will be conducted throughout the construction phase of the land and marine-based works to confirm the implementation of the water pollution control measures and good site practices as recommended in Annex A.

Table 5.5     Action and Limit Level for Water Quality

Parameter

Action Level

Limit Level

Construction Phase and Maintenance Dredging Marine Water Monitoring

DO in mg L-1 a

Surface and Middle

5th%-ile of baseline data for surface and middle layers

 

Bottom

5th%-ile of baseline data for bottom layer

 

Surface and Middle

4 mg L-1 or 1%ile of baseline for surface and middle layers

 

Bottom

2 mg L-1 or 1%ile of baseline for bottom layer

 

Turbidity in NTU

(Depth-averaged b) c

95th%-ile of baseline data, and

120% of the relevant control station's turbidity at the same tide of the same day

 

99th%-ile of baseline data, and

130% of the relevant control station's turbidity at the same tide of the same day

SS in mg L-1

(Depth-averaged b) c

95th%-ile of baseline data, and

120% of the relevant control station's SS at the same tide of the same day

 

99th%-ile of baseline data, and

130% of the relevant control station's SS at the same tide of the same day

First-year Operation Phase Marine Water Monitoring

DO in mg L-1 a

Surface and Middle

5th%-ile of baseline data for surface and middle layers

 

Bottom

5th%-ile of baseline data for bottom layer

 

Surface and Middle

4 mg L-1 or 1%ile of baseline for surface and middle layers

 

Bottom

2 mg L-1 or 1%ile of baseline for bottom layer

 

Water temperature in C

(Depth-averaged b) c

1.5 C of baseline data, and

1.5 C of the relevant control station's water temperature at the same tide of the same day

 

2.0 C of baseline data, and

2.0 C of the relevant control station's water temperature at the same tide of the same day

Turbidity in NTU

(Depth-averaged b) c

95th%-ile of baseline data d, and

120% of the relevant control station's turbidity at the same tide of the same day

 

99th%-ile of baseline data d, and

130% of the relevant control station's turbidity at the same tide of the same day

SS in mg L-1

(Depth-averaged b) c

95th%-ile of baseline data d, and

120% of the relevant control station's SS at the same tide of the same day

 

99th%-ile of baseline data d, and

130% of the relevant control station's SS at the same tide of the same day

TIN in mg L-1

(Depth-averaged b) c

95th%-ile of baseline data d, and

120% of the relevant control station's TIN at the same tide of the same day

 

99th%-ile of baseline data d, and

130% of the relevant control station's TIN at the same tide of the same day

BOD5 in mg L-1

(Depth-averaged b) c

95th%-ile of baseline data d, and

120% of the relevant control station's BOD5 at the same tide of the same day

 

99th%-ile of baseline data d, and

130% of the relevant control station's BOD5 at the same tide of the same day

TRC in mg L-1

(Depth-averaged b) c

0.02 mg L-1

0.02 mg L-1

Notes:

a.           For DO, non-compliance of the water quality limits occurs when monitoring result is lower than the limits.

b.           Depth-averaged is calculated by taking the arithmetic means of reading of all three depths.

c.           For water temperature, salinity, SS, turbidity, BOD5, TIN and TRC, non-compliance of the water quality limits occurs when monitoring result is higher than the limits.

d.           Baseline data from EPD Marine Water Quality Monitoring Station SM17 should be referred.  The proposed monitoring data shall be submitted to EPD for approval prior to the commencement of monitoring programme.


Table 5.6     Event and Action Plan for Water Quality Monitoring

Event

Action

ET

IEC

Contractor(s)

Project Proponents

Action Level being exceeded by one sampling day

1.      Repeat in-situ measurement to confirm findings;

2.      Check monitoring data, plant, equipment and Contractor(s)s working methods;      

3.      Identify source(s) of impact and record in notification of exceedance;

4.      Inform IEC, Contractor(s) and Project Proponents.

 

1.      Check monitoring data submitted by ET and Contractor(s)s working methods.

1.      Confirm receipt of notification of exceedance in writing;

2.      Check plant and equipment and rectify unacceptable practice.

1.      Confirm receipt of notification of exceedance in writing.

Action Level being exceeded by two or more consecutive sampling days

1.      Repeat in-situ measurement to confirm findings;

2.      Check monitoring data, plant, equipment and Contractor(s)s working methods;

3.      Identify source(s) of impact and record in notification of exceedance;

4.      Inform IEC, Contractor(s) and Project Proponents;

5.      Discuss with IEC and Contractor(s) on additional mitigation measures and ensure that they are implemented.

 

1.      Check monitoring data submitted by ET and Contractor(s)s working methods;

2.      Discuss with ET and Contractor(s) on additional mitigation measures and advise Project Proponents accordingly;

3.      Assess the effectiveness of the implemented mitigation measures.

 

1.      Confirm receipt of notification of exceedance in writing;

2.      Check plant and equipment and rectify unacceptable practice;

3.      Consider changes of working methods;

4.      Discuss with ET and IEC on additional mitigation measures and propose them to Project Proponents within 3 working days;

5.      Implement the agreed mitigation measures.

1.      Confirm receipt of notification of exceedance in writing;

2.      Discuss with the IEC on the proposed additional mitigation measures and agree on the mitigation measures to be implemented;

3.      Ensure additional mitigation measures are properly implemented.

Limit Level being exceeded by one sampling day

1.      Repeat in situ measurement to confirm findings;

2.      Check monitoring data, plant, equipment and Contractor(s)s working methods;

3.      Identify source(s) of impact and record in notification of exceedance;

4.      Inform IEC, Contractor(s), Project Proponents and EPD;

5.      Discuss with IEC and Contractor(s) on additional mitigation measures and ensure that they are implemented.

 

1.      Check monitoring data submitted by ET and Contractor(s)s working methods;

2.      Discuss with ET and Contractor(s) on additional mitigation measures and advise Project Proponents accordingly;

3.      Assess the effectiveness of the implemented mitigation measures.

 

1.      Confirm receipt of notification of exceedance in writing;

2.      Check plant and equipment and rectify unacceptable practice;

3.      Critically review the need to change working methods;

4.      Discuss with ET and IEC on additional mitigation measures and propose them to Project Proponents within 3 working days;

5.      Implement the agreed mitigation measures.

1.      Confirm receipt of notification of exceedance in writing;

2.      Discuss with the IEC on the proposed additional mitigation measures and agree on the mitigation measures to be implemented;

3.      Ensure additional mitigation measures are properly implemented;

4.      Request Contractor(s) to critically review the working methods.

 

 

Limit Level being exceeded by two or more consecutive sampling days

1.      Repeat in situ measurement to confirm findings;

2.      Check monitoring data, plant, equipment and Contractor(s)s working methods;

3.      Identify source(s) of impact and record in notification of exceedance;

4.      Inform IEC, Contractor(s), Project Proponents and EPD;

5.      Discuss with IEC and Contractor(s) on additional mitigation measures and ensure that they are implemented.

 

1.      Check monitoring data submitted by ET and Contractor(s)s working methods;

2.      Discuss with ET and Contractor(s) on additional mitigation measures and advise Project Proponents accordingly;

3.      Assess the effectiveness of the implemented mitigation measures.

1.      Confirm receipt of notification of exceedance in writing;

2.      Check plant and equipment and rectify unacceptable practice;

3.      Critically review the need to change working methods;

4.      Discuss with ET and IEC on additional mitigation measures and propose them to Project Proponents within 3 working days;

5.      Implement the agreed mitigation measures;

6.      As directed by Project Proponents, slow down or stop all or part of the marine construction works until no exceedance of Limit Level.

1.      Confirm receipt of notification of exceedance in writing;

2.      Discuss with the IEC on the proposed additional mitigation measures and agree on the mitigation measures to be implemented;

3.      Ensure additional mitigation measures are properly implemented;

4.      Request Contractor(s) to critically review the working methods;

5.      Consider and instruct, if necessary, the Contractor(s) to slow down or to stop all or part of the marine construction works until no exceedance of Limit Level.

 

 

 


6.                 Waste Management

6.1            Introduction

The construction of the Project is expected to generate the following types of waste during the construction phase:

    Dredged marine sediment;

    Construction & demolition (C&D) materials;

    Chemical waste; and

    General refuse.

Mitigation measures, where appropriate, have been recommended as part of the EIA to avoid or reduce potential adverse environmental impacts associated with handling, collection, transport and disposal of waste arising from the construction of the proposed Project.

Waste management will be the Contractor(s)s responsibility and wastes produced during the construction phase will be managed in accordance with appropriate waste management practices and EPDs regulations and requirements.

Auditing of waste management practices during regular site inspections on land-based work sites (at the GRSs at the BPPS and the LPS), and at marine-based work sites (on marine vessels and at the Jetty) will be conducted to determine if wastes are being managed in accordance with the approved procedures and the site Waste Management Plans.  The construction Contractor(s) will be responsible for the implementation of any mitigation measures to reduce waste or redress issues arising from the waste materials.

6.2            Waste Management Practices

The waste management practices and recommended mitigation measures will be incorporated into a Waste Management Plan (WMP) as stated in the Practice Notes for Authorised Persons, Registered Structural Engineers and Registered Geotechnical Engineers (PNAP) ADV-19 Construction and Demolition waste for the Project for managing the different types of wastes by the Contractors on site.  The WMP will become a part of the Environmental Management Plan (EMP).  The contractor is required to prepare the EMP and submit it to the Project Proponents for approval and then implement the EMP accordingly. 

The WMP shall describe the arrangements for avoidance, reuse, recovery and recycling, handling, collection, transport, the estimated rate of C&D materials generation and disposal, and the recommended mitigation measures on waste management as set out in Section 8.5 of the EIA Report.  The WMP shall indicate the disposal arrangements and locations of C&D materials and other wastes.

A Trip Ticket system will be included in the WMP.  Surplus excavated spoil and other wastes will not be disposed at any other designated disposal locations unless otherwise approved in writing by EPD, Secretary of Public Fill Committee and/or other authorities as appropriate.

The Implementation Schedule (Annex A) provides details on the appropriate mitigation measures for avoiding and preventing adverse environmental impacts associated with dredged marine sediment, C&D materials, chemical wastes, general refuse and sewage from the workforce; as well as industrial wastes from maintenance activities and material from maintenance dredging.  The WMP will be refined and updated as more detailed information is generated on the volume of dredged marine sediment and the agreed disposal arrangements.  Similarly, it will be regularly reviewed, and updated as appropriate, throughout the course of the construction works to confirm that it remains current with the latest detailed information and works practices.

The WMP will also outline the requirements for a waste audit program to verify that the measures outlined in the plan are effectively implemented and adhered too.

6.3            Methodology and Criteria

The construction Contractor(s) must confirm that the necessary disposal permits or licences are obtained from appropriate authorities in accordance with the various Ordinances.  In addition to the monthly joint inspections/ audits, each construction Contractor(s) will designate a member of staff as being responsible for routine inspections and audits of on-site waste management practices, with reference to the relevant legislation and guidelines as well as the recommendations given in the Implementation Schedule contained in Annex A of this Manual, and defined below:

(1)        General Legislation

    Waste Disposal Ordinance (WDO) (Cap 354);

    Waste Disposal (Chemical Waste) (General) Regulation (Cap 354C);

    Buildings Ordinance (Cap 123);

    Land (Miscellaneous Provisions) Ordinance (Cap 28);

    Public Health and Municipal Services Ordinance (Cap 132) Public Cleansing and Prevention of Nuisances Regulations;

    Dumping at Sea Ordinance (DASO) (Cap. 466); and

    Merchant Shipping (Prevention and Control of Pollution) Ordinance (Cap 413).

(2)        Other Relevant Guidelines

   Waste Disposal Plan for Hong Kong (December 1989), Planning, Environment and Lands Branch Government Secretariat, HKSAR Government;

   Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes (1992), EPD, HKSAR Government;

   Hong Kong Planning Standards and Guidelines Planning (2014), Planning Department, HKSAR Government;

   WBTC No. 2/93 - Public Dumps, Works Branch, HKSAR Government;

   WBTC No. 2/93B - Public Filling Facilities, Works Branch, HKSAR Government;

   WBTC No. 16/96 - Wet Soil in Public Dumps, Works Branch, HKSAR Government;

   Waste Reduction Framework Plan, 1998 to 2007, Planning, Environment and Lands Bureau, Government Secretariat, 5 November 1998;

   WBTC No. 4/98 and 4/98A - Use of Public Fill in Reclamation and Earth Filling Projects, Works Bureau, HK SAR Government;

   Project Administration Handbook for Civil Engineering Works, Section 3.3(i) of Chapter 2 and Section 4.13 of Chapter 4 - Incorporation of Information on Construction and Demolition Material Management in Public Works Subcommittee Papers, Hong Kong SAR Government;

   WBTC No. 12/2000 - Fill Management, Works Bureau, HKSAR Government;

   WBTC No. 19/2001 - Metallic Site Hoardings and Signboards; Works Bureau, HKSAR Government;

   Project Administration Handbook for Civil Engineering Works, Section 21.25 of Chapter 7 and Section 9.12 of Chapter 5 - Control of Site Crushers, HKSAR Government;

   WBTC No. 12/2002 - Specifications Facilitating the Use of Recycled Aggregates, Works Bureau, HKSAR Government;

   Project Administration Handbook for Civil Engineering Works, Section 4.1.3 of Chapter 4 - Management of Construction and Demolition Material Including Rock, HKSAR Government;

   ETWB TC(W) No. 19/2005 - Environmental Management on Construction Sites, Environment, Transport and Works Bureau, HKSAR Government; 

   DevB TC(W) No. 6/2010 - Trip Ticket System for Disposal of Construction & Demolition Materials, Development Bureau, HKSAR Government;

   Practice Notes for Authorised Persons, Registered Structural Engineers and Registered Geotechnical Engineers (PNAP) ADV-19 Construction and Demolition Waste; and

   PNAP ADV-21 Management Framework for Disposal of Dredged/ Excavated Sediment.

The Contractor(s)s waste management practices will be audited with reference to the checklist detailed in Table 6.1 below.

Details of the required mitigation measures are included in the Implementation Schedule of Annex A of this EM&A Manual.


Table 6.1  Waste Management Checklist

Activities

Timing

Checking Frequency

If non-compliance noted, Action Required

Necessary waste disposal permits or licences have been obtained.

Before the commencement of works

Once

The ET will inform the Contractor(s), IEC and Project Proponents.  The Contractor(s) will apply for the necessary permits/ licences prior to disposal of the waste.  The ET will verify that corrective action has been taken.

 

Dredged sediments are managed and disposed in accordance with PNAP ADV-21: Management Framework for Disposal of Dredged/ Excavated Sediment and Dumping at Sea Ordinance (DASO). 

Throughout the dredging works

Each Month

 

The ET will inform the Contractor(s), IEC and Project Proponents.  Project Proponents will instruct the Contractor(s) to manage and dispose the dredged materials properly.  The Contractor(s) will immediately suspend dredging until the dredging materials are properly managed and disposed.

 

Waste are collected by licensed waste hauliers and disposed of at licensed sites.

Throughout the works

Each Week

The ET will inform the Contractor(s), IEC and Project Proponents.  Project Proponents will instruct the Contractor(s) to comply.  The Contractor(s) will temporarily suspend waste collection of that particular waste until a licensed waste haulier is used.  Corrective action will be undertaken within 48 hours.

 

Records of quantities of wastes generated, recycled and disposed of and the disposal sites are properly kept.

 

Throughout the works

Each Month

The ET will inform the Contractor(s), IEC and Project Proponents.  The Contractor(s) will estimate the missing data based on previous records and the activities carried out.  The ET will review the results and forward to Project Proponents for approval.

 

Sufficient waste disposal points are provided.  Wastes are collected and removed from site in a timely manner.  General refuse is collected on a regular basis.

 

Throughout the works

Each Week

The ET will inform the Contractor(s), IEC and Project Proponents.  Project Proponents will instruct the Contractor(s) to remove waste accordingly.

Waste storage areas are properly cleaned and do not cause windblown litter and dust nuisance.  Appropriate measures to reduce windblown litter and dust nuisance of waste will be adopted, e.g. by either covering trucks or by transporting wastes in enclosed containers.

 

Throughout the works

Each Week

The ET will inform the Contractor(s), IEC and Project Proponents.  Project Proponents will instruct the Contractor(s) to clean the storage area and/or cover the waste.

Different types of waste are segregated in different containers or skip to enhance reuse and recycling of material and proper disposal of waste.

Throughout the works

Each Week

The ET will inform the Contractor(s), IEC and Project Proponents.  Project Proponents will instruct the Contractor(s) to provide separate skips/ containers.  The Contractor(s) will verify that the workers place the waste in the appropriate containers.

 

Chemical wastes are stored, handled and disposed of in accordance with the Code of Practice on the Packaging, Handling and Storage of Chemical Wastes, published by the EPD.  Chemical wastes are separated for special handling and appropriate treatment at the Chemical Waste Treatment Centre at Tsing Yi.

Throughout the works

Each Week

The ET will inform the Contractor(s), IEC and Project Proponents.  Project Proponents will instruct the Contractor(s) to rectify the issues immediately.  Warning will be given to the Contractor(s) if corrective actions are not taken within 24 hrs.

 

 

 

 

Note:  ET Environmental Team, IEC Independent Environmental Checker



7.                 Ecology

7.1            Introduction

The EIA indicates that construction phase impacts with recommended mitigation, and operation phase impacts are not expected to be unacceptable to terrestrial and marine ecological resources.  Appropriate mitigation measures are proposed in the EIA to control the environmental impacts to marine and terrestrial ecology to within acceptable levels. 

The following sections provide details of the measures to be undertaken by the ET to confirm that the measures recommended in the EIA are carried out.

7.2            Marine Mammal Monitoring

In order to determine the efficacy of the recommended mitigation measures and provide verification of impact prediction/ evaluation results, monitoring of marine mammal is recommended.  Monitoring shall cover a baseline period, the construction and post-construction monitoring.  The monitoring will be conducted using vessel-based line transect survey and passive acoustic monitoring (PAM) method.  All monitoring should be led by suitably qualified persons (degree in biology or equivalent).

Details on the vessel-based line transect survey and PAM survey are presented below.  The ET liaised with Agriculture, Fisheries and Conservation Department (AFCD) to finalise the marine mammal monitoring programme in June 2019 prior to the monitoring being undertaken.

7.2.1       Vessel-based Line Transect Survey

7.2.1.1  General Approach, Schedule and Survey Area

Vessel-based marine mammal survey by means of systematic line-transect boat survey will be undertaken to examine the distribution and encounter rate of Finless Porpoise in southern Lantau where a majority of Project construction works would take place.  Survey transects are proposed to cover three survey areas for line-transect boat surveys, namely Southwest Lantau, Southeast Lantau and Lamma are presented in Figure 7.1The methodology of the survey will be consistent and compatible with that adopted in the EIA baseline surveys as well as the long-term marine mammal monitoring programme conducted by AFCD since 1995 to allow potential comparisons and pooling data for analysis.

The transect boat survey will be conducted from a 15m inboard vessels (with an open upper deck above the pilothouse, providing a mostly unobstructed 180 view of the area ahead of the vessel), weather permitting (Beaufort 0-5, no heavy rain, and visibility > 1,200m).  The marine mammal observer (MMO) team will conduct searches and observations from the flying bridge area, 4-5m eye height above the water surface.  In order to ensure the quality of the data and allow consistency with the long-term AFCD database, and take consideration of the sea conditions of the monitoring site, a team of three qualified and trained MMOs will make up the survey team.

As the vessel transits the transect lines at a relatively constant speed of 13-15km hr-1, the primary MMO searches for marine mammals continuously through 7 X 50 marine binoculars.  A second MMO searches with unaided eye and fills out data sheets.  Both MMOs search ahead of the vessel, between 270 and 90 (in relation to the bow, which is defined as 0).  MMOs rotate positions approximately every 30 minutes.  There will be an additional MMO on the boat, who rotate into position to give observers a rest after each hour of search effort, thereby minimizing fatigue. 

Effort data collected during on-effort monitoring periods includes time and position for the start and end of search effort, vessel speed, sea state (Beaufort scale), visibility, and distance travelled in each series (a continuous period of search effort).  When marine mammals are sighted, the MMO fills out a sighting sheet (Annex B), and generally the team is taken off-effort and the vessel is diverted from its course to approach the marine mammal group for group size estimation, behavioural observations, and collection of identification photos.  The sighting sheet includes information on initial sighting angle and distance, position of initial sighting, sea state, group size and composition, and behaviour, such as response to the survey vessel and associations with vessels.  Position, distance travelled, and vessel speed are obtained from a hand-held Global Positioning System (GPS) unit.

All records of marine mammal sightings will be collated, compiled and integrated with Geographic Information System (GIS).  Positions of sightings together with group sizes, activities and calf occurrence will be plotted on figures for illustration of spatial and temporal patterns of porpoise distribution, if any.  The method for line transect analysis of porpoise encounter rate will follow the established approach for AFCD long-term marine mammal monitoring ([2]).  It should be noted that as Finless Porpoises are cryptic and difficult to identify as unique individuals with no useful natural markings, the potential of double counting cannot be eliminated and hence rendering any abundance or density estimation confounded with serious violation of assumption under the line-transect survey method; therefore such analysis is not proposed to be completed for Finless Porpoise, which is the same approach for the AFCD long-term marine mammal monitoring.

Vessel-based line transect marine mammal surveys are proposed to be conducted during the 6-month baseline monitoring, construction of the LNG Terminal and for a period of one year post-construction following the start of operation of the LNG Terminal.  Each transect line is proposed to be surveyed twice per month.

The final survey method, survey areas and duration of the survey have been agreed in consultation with a marine mammal expert with experience in vessel-based line transect surveys and the AFCD.

7.2.1.2  Determination of Action and Limit Levels

The EIA predicts that marine mammals would avoid the vicinity of the works areas during the construction period and would return to the areas upon cessation of the disturbance.  Consequently, there may be a decline of Finless Porpoise usage of some waters of the Southeast Lantau survey area where the LNG Terminal is located, while the animals are expected to move to the broader southern Lantau waters including the Southwest Lantau and Lamma survey areas and continue to use the broader areas to a similar degree.

To detect unacceptable/ unforeseen changes in Finless Porpoise distribution as construction work progresses, it is proposed to establish the Action Level and Limit Level for marine mammal monitoring using encounter rate calculated from the vessel-based line transect surveys from the three survey areas as a whole.  For each monthly reporting period, encounter rate from construction phase monitoring will be calculated using the last three months monitoring data, i.e. a running quarterly value, and compared with the encounter rate from baseline monitoring to check if the threshold values are triggered for remedial actions to be undertaken.  This approach would allow natural seasonal fluctuations in Finless Porpoise encounter rate to be accounted for, and allow porpoise data to be reviewed every month such as appropriate actions could be taken timely.

Details on the calculation of encounter rate and appropriate Action and Limit Levels will be agreed with the AFCD, subsequent to the completion of baseline monitoring and the submission of the Baseline Monitoring Report as stipulated in Condition 5.3 of the three FEPs.  An Event and Action Plan for marine mammal monitoring (Table 7.1) will also be developed and agreed with the AFCD in the Baseline Monitoring Report to describe the appropriate actions that need to be undertaken in the event that the Action and Limit Levels are exceeded, with a view to mitigating unacceptable/ unforeseen changes in Finless Porpoise distribution as a result of Project construction works.


Table 7.1     Event and Action Plan for Marine Mammal Monitoring

Event

Action

ET

IEC

Contractor(s)

Project Proponents

Action Level exceeded

1.      Check monitoring data and repeat data analysis to confirm findings;

2.      Review available AFCD data and relevant EM&A data to check if the exceedance is due to natural variation or works related;

3.      Identify potential source(s) of impact;

4.      Inform the IEC, Project Proponents and Contractor;

5.      Increase site inspection and audit frequency to ensure all the marine mammal protective and/or precautionary measures are properly implemented.

 

1.      Check monitoring data and analysis and investigation by ET;

2.      Conduct additional site inspection and audit with ET to ensure all the marine mammal protective and/or precautionary measures are properly implemented and advise Project Proponents the audit results and findings accordingly.

 

1.      Inform the Project Proponents and confirm notification of the non-compliance in writing;

2.      Conduct site inspection and audit with the ETL and IEC;

3.      Ensure all the marine mammal protective and/or precautionary measures are properly implemented.

1.      Discuss the need for increased site inspection and audit frequency proposed by ET with IEC and the Contractor;

2.      Check the audit results and findings from ET and IEC.

Limit Level exceeded

1.      Check monitoring data and repeat data analysis to confirm findings;

2.      Review available AFCD data and relevant EM&A data to check if the exceedance is due to natural variation or works related;

3.      Identify potential source(s) of impact;

4.      Inform the IEC, Project Proponents and Contractor;

5.      Increase site inspection and audit frequency to ensure all the marine mammal protective and/or precautionary measures are properly implemented;

6.      Review previous occurrence of non-compliance events to investigate if there is a longer term trend that needs attention;

7.      ET to discuss and confirm with Project Proponents, IEC and Contractor on the need for further mitigation measures (e.g. consider controlling and, if necessary suspending marine works associated with the suspected source of impact).

1.      Check monitoring data and analysis and investigation by ET;

2.      Conduct additional site inspection and audit with ET to ensure all the marine mammal protective and/or precautionary measures are properly implemented and advise Project Proponents the audit results and findings accordingly

3.      Discuss and confirm further mitigation measures with Project Proponents, ET and Contractor;

4.      Supervise / audit the implementation of further mitigation measures and advise Project Proponents the results and findings accordingly.

1.      Inform the Project Proponents and confirm notification of the non-compliance in writing;

2.      Conduct site inspection and audit with the ETL and IEC;

3.      Ensure all the marine mammal protective and/or precautionary measures are properly implemented;

4.      Discuss and confirm further mitigation measures with the ETL, IEC and Project Proponents;

5.      Carry out further measures when advised by ET and agreed by Project Proponents and IEC.

 

1.      Discuss the need for increased site inspection and audit frequency proposed by ET with IEC and the Contractor;

2.      Check the audit results and findings from ET and IEC;

3.      Discuss and confirm further mitigation measures with the ET, IEC and Contractor;

4.      Supervise the implementation of further mitigation measures.


7.2.2       Passive Acoustic Monitoring

7.2.2.1  General Approach, Schedule and Survey Area

Underwater PAM survey is a tool for detecting the high frequency clicks of marine mammals as these are easily-distinguished from sounds of other marine animals.  Recent experience includes specific C-POD (Cetacean-Porpoise Detector) devices that more accurately records vocalizations of finless porpoises plus all other echolocating toothed whales and dolphins.  The deployment of such devices would allow the activity of finless porpoises to be monitored both day and night over 24 hours in all weather conditions.  As such, C-PODs are proposed to be deployed as part of the EM&A for this Project to provide supplementary information on porpoise usage of southern Lantau waters.

As porpoise clicks are substantially above 100 kHz in frequency, it is noted that the detection distance is likely to be on the order of low 100s of meters from bottom-mounted C-PODs, initially, C-PODs are proposed to be deployed at five (5) locations (Figure 7.2) on the seabed within and in the vicinity of the LNG Terminal site in consideration of the followings:

    The locations are selected that can be deployed over the baseline, construction and post-construction periods of the Project;

    Avoid encroaching other nearby utilities and facilities (e.g. submarine cables, South Cheung Chau Sediment Disposal Facility);

    Avoid overlapping with existing C-POD deployment locations by others; and

    Dolphins Per Survey Effort (DPSE) / Sightings Per Survey Effort (SPSE) of finless porpoise in 2007-2017

C-PODs should be left in place during the 6-month baseline monitoring, construction of the LNG Terminal and for a period of one year post-construction following the start of operation of the LNG Terminal.  Such duration should allow for a robust record of marine mammal usage of the area to be obtained and allow for the inter-seasonal differences already known for finless porpoises.  The C-PODs deployed will need to be serviced every two to four months, subject to review on an as-needed basis, to download accumulated data and replace batteries.

The downloaded record from the C-PODs will be examined to identify vocalisation of finless porpoises.  Analysis shall be undertaken to obtain information on finless porpoises such as:

    Number of clicks: calculated per hour to detect diel patterns, and per day to determine activity level at a site;

    Detection positive minutes (DPM): indicates the total amount of minutes where at least one click train was detected within a one minute time period, to measure the duration the finless porpoises spent in an area;

    Duration of click trains: provides an indication of the average density of finless porpoises at a site; and

    Encounter rates: represents the number of porpoise echolocation click train (>5 clicks) encounters per hour of acoustic measurement with the C-POD.

Any spatial or temporal trends (especially the 24-hour activity patterns) in changes of the above parameter will be determined.

The final number, positioning and duration of the deployment of devices have been agreed in consultation with a marine mammal expert with experience in PAM / C-POD application and the AFCD.

7.2.2.2  Monitoring Results

Should finless porpoise detection numbers ([3]) be significantly different (taking into account naturally occurring alterations to distribution patterns such as due to seasonal change) between the baseline, construction and post construction monitoring, recommendations for further post-construction monitoring survey will be made.  Data should then be re-assessed and the need for any further monitoring established.  Prior to the commencement of monitoring, the monitoring methodology will be agreed with the AFCD.

7.3            Marine Mammal Exclusion Zone Monitoring

Marine mammal exclusion zones for various construction activities are listed in Table 7.2.

Table 7.2     Marine Mammal Exclusion Zone Requirements for Various Activities

Activity

Exclusion Zone

Requirement

Percussive Piling Works for construction of Jetty

500m

Before percussive piling commences, the exclusion zone must have been continuously clear of marine mammals for 30 minutes.  During percussive piling, if marine mammals are spotted within the exclusion zone, percussive piling works will cease and will not resume until the observer confirms that the zone has been continuously clear of marine mammals for a period of 30 minutes.

 

Marine dredging or jetting operations

250m

Before pipeline dredging or jetting commence, the exclusion zone must have been continuously clear of marine mammals for 30 minutes.  During pipeline dredging/ jetting, if marine mammals are spotted within the exclusion zone, pipeline dredging/ jetting works will cease and will not resume until the observer confirms that the zone has been continuously clear of marine mammals for a period of 30 minutes.

 

Note: If necessary, for night-time works, exclusion zone monitoring for FP by underwater acoustic means would be explored to supplement the exclusion zone monitoring by trained observers.  A site trial will be conducted to demonstrate its practicability/ effectiveness before actual implementation during the night-time works.

7.4            Ecology Mitigation Measures

Details of all the recommended mitigation measures for ecology are summarised in the Implementation Schedule provided in Annex A.

 


 

8.                 Fisheries

As no unacceptable impacts are anticipated to occur during the construction and operation of this Project, therefore, monitoring of fisheries resources during these project phases is not considered necessary.

Monitoring activities designed to detect and mitigate impacts to water quality during construction and operation phases are also expected to serve to protect against impacts to fisheries.  The details of the water quality monitoring programme are presented in this EM&A Manual (Section 5).

The recommended construction and operational phase mitigation measures are summarised in the Implementation Schedule provided in Annex A.


 

9.                 Visual

The VIA recommended a series of measures for the design, construction and operation phase to further enhance the visual impacts of the Project.  Details of all the recommended mitigation measures are summarised in the Implementation Schedule provided in Annex A.  No environmental monitoring is required.


 

10.             Cultural Heritage

As no impacts to marine archaeological resources are expected, no mitigation measures and environmental monitoring is required.


 

11.             Environmental Site Inspection

11.1        Site Inspections

Site inspections provide a direct means to assess and confirm that the Contractor(s)s environmental protection and pollution control measures are in compliance with the contract specifications.  The site inspection will be undertaken routinely by the ET throughout the construction phases of the Project to verify that appropriate environmental protection and pollution control mitigation measures are properly implemented in accordance with the EIA.  In addition, the ET will be responsible for defining the scope of the inspections, detailing any deficiencies that are identified, and reporting any necessary action or additional mitigation measures that were implemented as a result of the inspection. 

Regular site inspections will be carried out by the ET each month.  The IEC will also undertake regular site audit to assess the performance of the Contractor(s).  The areas of inspection will not be limited to the site area and should also include the environmental conditions outside the site which are likely to be affected, directly or indirectly, by the site activities.  The ET will make reference to the following information while conducting the inspections:

    the EIA and EM&A recommendations on environmental protection and pollution control mitigation measures;

    ongoing results of the EM&A programme;

    work progress and programme;

    individual works methodology proposals;

    the contract specifications on environmental protection;

    the relevant environmental protection and pollution control laws; and

    previous site inspection results.

The Contractor(s) will update the ET with relevant information on the construction works prior to carrying out the site inspections.  The site inspection results will be submitted to the IEC, Project Proponents and the Contractor(s) within 24 hours.  Should actions be necessary, the ET will follow up with recommendations on improvements to the environmental protection and pollution control works and will submit these recommendations in a timely manner to the IEC, Project Proponents and the Contractor(s).  They will also be presented, along with the remedial actions taken, in the monthly EM&A report.  The Contractor(s) will follow the procedures and time frame stipulated in the environmental site inspection for the implementation of mitigation proposal.  An action reporting system will be formulated and implemented to report on any remedial measures implemented subsequent to the site inspections.

Ad hoc site inspections will also be carried out by the ET and site audits by the IEC if significant environmental issues are identified.  Inspections and audits may also be required subsequent to receipt of an environmental complaint or as part of the investigation work as specified in the Action Plan for environmental monitoring and audit.

11.2        Compliance with Legal & Contractual Requirements

There are contractual environmental protection and pollution control requirements as well as environmental protection and pollution control laws in Hong Kong with which the construction activities will comply.

In order that the works are in compliance with the contractual requirements, the works method statements (where relevant to environmental measures) submitted by the Contractor(s) to the Project Proponents for approval should be sent to the ET for review.

The ET will also review the progress and programme of the works to check the regulatory compliance.

The Contractor(s) will regularly copy relevant documents to the ET so that the checking and auditing work can be carried out.  The relevant documents should at least include the updated Work Progress Reports, the updated Works Programme, the application letters for different licence/permits under the environmental protection laws and all valid licences/permits. The site diary will also be available for the ET inspection upon request.

After reviewing the document, the ET will advise the Project Proponents and the Contractor(s) of any non-compliance from the contractual and legislative requirements on environmental protection and pollution control for follow-up actions. 

Upon receipt of the advice, the Contractor(s) should undertake immediate action to remedy the situation.  The Project Proponents should follow up to ensure that appropriate action will be taken by the Contractor(s) in order to satisfy the environmental protection and pollution control requirements.

11.3        Environmental Complaints

The ET will undertake the following procedures (see Figure 11.1) upon receipt of a complaint:

(1)        log complaint and date of receipt into the complaint database and inform the IEC immediately;

(2)        investigate the complaint and discuss with the Contractor(s) and Project Proponents to determine its validity and to assess whether the source of the issue is due to works activities;

(3)        if a complaint is considered valid due to the works, the ET will identify mitigation measures in consultation with the Contractor(s), Project Proponents and IEC;

(4)        if mitigation measures are required, the ET will advise the Contractor(s) accordingly;

(5)        review the Contractor(s)'s response, with IEC and Project Proponents, on the identified mitigation measures and the updated situation;

(6)        undertake additional monitoring and audit to verify the situation if necessary and confirm that any valid reason for complaint does not recur;

(7)        if the complaint is referred by EPD, an interim report will be submitted to EPD on the status of the complaint investigation and follow-up action within the time frame assigned by EPD;

(8)        report the investigation results and the subsequent actions on the source of the complaint for responding to complainant.  If the source of complaint is EPD, the results should be reported within the time frame assigned by EPD; and

(9)        record the complaint, investigation, the subsequent actions and the results in the Monthly EM&A Reports.

During the complaint investigation work, the ET, Contractor(s) and Project Proponents should cooperate with the IEC in providing the necessary information and assistance for completion of the investigation.  If mitigation measures are identified in the investigation, the Contractor(s) will promptly carry out the mitigation measures.  Project Proponents should agree the proposed mitigation measures and the ET and IEC should check that the measures have been carried out by the Contractor(s).

11.4        Log-Book

The ETL will keep a contemporaneous log-book of each and every instance or circumstance or change of circumstances which may affect the EIA and every non-compliance from the recommendations of the EIA Report or the EP.  The ETL will notify the IEC within one working day of the occurrence of any such instance or circumstance or change of circumstance.  The ETLs log-book will be kept readily available for inspection by persons assisting in supervision of the implementation of the EIA Report recommendations (such as Project Proponents, IEC and Contractor(s)) and the FEPs or by EPD or his authorised officers.


 

12.             Reporting

12.1        General

Reports can be provided in an electronic medium upon agreeing the format with Project Proponents and EPD.  The monitoring data (baseline and impact) will also be made available through a dedicated internet website that would be agreed with relevant authority.

Types of reports that the ETL will prepare and submit include baseline monitoring report, post-construction water quality monitoring report, post-construction marine mammal monitoring report, monthly EM&A reports, quarterly EM&A summary reports, annual/ final EM&A review report, and water quality monitoring report for the first-year of operation of the LNG Terminal.  In accordance with Annex 21 of the EIAO-TM, a copy of the monthly, quarterly summary and annual/ final review EM&A reports will be made available to the Director of Environmental Protection.

12.2        Baseline Monitoring Report

In respect of the construction phase water quality and marine mammal EM&A works for the marine construction works, the ET will prepare and submit a Baseline Monitoring Report at least 2 weeks before commencement of construction of the Project for agreement on the Action/Limit Levels for water quality and marine mammal monitoring.  Copies of the Baseline Monitoring Report will be submitted to the following: the Contractor(s), the IEC, the Project Proponents, the EPD and the AFCD as appropriate.  The ET will liaise with the relevant parties on the exact number of copies required.

The Baseline Monitoring Report for the construction phase, covering both baseline water quality monitoring and baseline marine mammal monitoring, will include at least the following:

(1)        Up to half a page executive summary.

(2)        Brief project background information.

(3)        Drawings showing locations of the baseline monitoring stations.

(4)        Monitoring results (in both hard and electronic copies) together with the following information:

    monitoring methodology;

    name of laboratory and types of equipment used and calibration details;

    parameters monitored;

    monitoring locations (and depth);

    monitoring date, time, frequency and duration; and

    quality assurance (QA)/quality control (QC) results and detection limits.

(5)        Details on influencing factors, including:

    major activities, if any, being carried out on the site during the period;

    weather conditions during the period; and

    other factors which might affect the results.

(6)        Determination of the Action and Limit Levels for each monitoring parameter and statistical analysis of the baseline data, the analysis will conclude if there is any significant difference between control and impact stations for the parameters monitored.

(7)        Revisions for inclusion in the EM&A Manual.

(8)        Comments, recommendations and conclusions.

12.3        Post-Construction Water Quality Monitoring Report

The ET will prepare and submit a Post-Construction Water Quality Monitoring Report within six weeks following the completion of the post-construction water quality monitoring for the Project.  Copies of the Post-Construction Water Quality Monitoring Report will be submitted to the following: the Contractor(s), the IEC, the Project Proponents, the EPD and the AFCD as appropriate.  The ET will liaise with the relevant parties on the exact number of copies required.  

The Post-Construction Water Quality Monitoring Report will include at least the following:

(1)        Up to half a page executive summary.

(2)        Brief project background information.

(3)        Drawings showing locations of the monitoring stations.

(4)        Monitoring results (in both hard and electronic copies) together with the following information:

     monitoring methodology;

     name of laboratory and types of equipment used and calibration details;

     parameters monitored;

     monitoring locations (and depth);

     monitoring date, time, frequency and duration;

     environmental quality performance limits (Action and Limit levels);

     Event and Action Plans;

     environmental mitigation measures, as recommended in the Project EIA Report;

     environmental requirements in contract documents;

     graphical plots of trends of monitored parameters at key stations over the monitoring; and

     quality assurance (QA)/quality control (QC) results and detection limits.

(5)        Details on influencing factors, including:

     major activities, if any, being carried out on the site during the period;

     weather conditions during the period; and

     other factors which might affect the results.

(6)        Comments, recommendations and conclusions.

12.4        Post-Construction Marine Mammal Monitoring Report

The ET will prepare and submit a Post-Construction Marine Mammal Monitoring Report within two months following the completion of the post-construction marine mammal monitoring for the Project.  Copies of the Post-Construction Marine Mammal Monitoring Report will be submitted to the following: the Contractor(s), the IEC, the Project Proponents, the EPD and the AFCD as appropriate.  The ET will liaise with the relevant parties on the exact number of copies required.   

The Post-Construction Marine Mammal Monitoring Report will include at least the following:

(1)        Up to half a page executive summary.

(2)        Brief project background information.

(3)        Drawings showing the monitoring locations.

(4)        Monitoring results (in both hard and electronic copies) together with the following information:

     monitoring methodology;

     types of equipment used;

     parameters monitored;

     monitoring locations;

     monitoring date, time, frequency and duration;

     environmental quality performance limits (Action and Limit levels);

     Event and Action Plans;

     environmental mitigation measures, as recommended in the Project EIA Report;

     environmental requirements in contract documents; and

     graphical plots of trends of monitored parameters over the monitoring.

(5)        Details on influencing factors, including:

     major activities, if any, being carried out on the site during the period;

     weather conditions during the period; and

     other factors which might affect the results.

(6)        Comments, recommendations and conclusions.

12.5        Monthly EM&A Reports

The results and findings of the construction phase EM&A work required in this Manual will be recorded in the Monthly EM&A Reports prepared by the ETL.  The EM&A report will be prepared and submitted within 2 weeks of the end of each reporting month, with the first report due the month after construction commences.  Each monthly EM&A report will be submitted to the following parties: the Contractor(s), the IEC, the Project Proponents and the EPD, as well as to other relevant departments as required.  Before submission of the first EM&A Report, the ET will liaise with the parties on the exact number of copies and format of the reports in both hard copy and electronic medium.

The ETL will review the number and location of monitoring stations and parameters every six months, or on as needed basis, in order to cater for any changes in the surrounding environment and the nature of works in progress.

12.5.1   Contents of First Monthly EM&A Report

(1)        1-2 pages executive summary, comprising:

     breaches of AL levels;

     complaint log;

     notifications of any summons and successful prosecutions;

     reporting changes; and

     forecast of impact predictions.

(2)        Basic project information including a synopsis of the project organisation, programme and management structure, and a drawing of the Project area showing the environmentally sensitive receivers and the locations of monitoring and control stations, programme, management structure and the work undertaken during the month.

(3)        Environmental Status, comprising:

     works undertaken during the month (such as location of works, quantities of waste generated); and

     drawing showing the project area, any environmental sensitive receivers and the locations of the monitoring and control stations.

(4)        A brief summary of EM&A requirements including:

     monitoring parameters;

     environmental quality performance limits (Action and Limit levels);

     Event and Action Plans;

     environmental mitigation measures, as recommended in the Project EIA Report; and

     environmental requirements in contract documents.

(5)        Advice on the implementation of environmental protection, mitigation and pollution control measures as recommended in the Project EIA Report and summarised in the updated implementation schedule.

(6)        Monitoring results (in both hard and electronic copies) together with the following information:

     monitoring methodology;

     name of laboratory and equipment used and calibration details;

     parameters monitored;

     monitoring locations (and depth); and

     monitoring date, time, frequency, and duration;

(7)        Graphical plots of trends of monitored parameters for representative monitoring stations annotated against the following:

     major activities being carried out on site during the period;

     weather conditions during the period; and

     any other factors which might affect the monitoring results;

(8)        Advice on the solid and liquid waste management.

(9)        A summary of non-compliance (exceedances) of the environmental quality performance limits (Action and Limit levels).

(10)     A review of the reasons for and the implications of non-compliance including a review of pollution sources and working procedures.

(11)     A description of the actions taken in the event of non-compliance and deficiency reporting and any follow-up procedures related to earlier non-compliance.

(12)     A summary record of complaints received (written or verbal) for each media, including locations and nature of complaints, liaison and consultation undertaken, actions and follow-up procedures taken and summary of complaints.

(13)     A summary record of notifications of summons, successful prosecutions for breaches of environmental protection/pollution control legislation and actions to rectify such breaches.

(14)     A forecast of the works programme, impact predictions and monitoring schedule for the next one month.

(15)     Comments, recommendations and conclusions for the monitoring period.

12.5.2   Contents of the Subsequent Monthly EM&A Reports

(1)        Title page.

(2)        Executive summary (1-2 pages), including:

    reaches of Action and Limit levels;

    complaint log;

    notifications of any summons and successful prosecutions;

    reporting changes; and

    forecast of impact predictions.

(3)        Contents page.

(4)        Environmental status, comprising:

    drawing showing the Project area, any environmental sensitive receivers and the locations of the monitoring and control stations;

    summary of non-compliance with the environmental quality performance limits; and

    summary of complaints.

(5)        Environmental issues and actions, comprising:

    review issues carried forward and any follow-up procedures related to earlier non-compliance (complaints and deficiencies);

    description of the actions taken in the event of non-compliance and deficiency reporting;

    recommendations (should be specific and target the appropriate party for action); and

    implementation status of the mitigation measures and the corresponding effectiveness of the measures.

(6)        Appendices, including:

    action and limit levels;

    graphical plots of trends of monitored parameters at key stations over the past reporting month for representative monitoring stations annotated against the following: major activities being carried out on site during the period; weather conditions during the period; and any other factors which might affect the monitoring results;

    monitoring schedule for the present and next reporting period;

    cumulative complaints statistics; and

    details of complaints, outstanding issues and deficiencies.

12.6        Quarterly EM&A Summary Report

The ETL will submit Quarterly EM&A Summary Reports for the construction phase EM&A works only.  These reports should contain at least the following information:

(1)          Up to half a page executive summary.

(2)          Basic project information including a synopsis of the Project organisation, programme, contacts of key management, compliance with the FEPs condition (status of submission) and a synopsis of work undertaken during the quarter.

(3)          A brief summary of EM&A requirements including:

    monitoring parameters;

    environmental quality performance limits (Action and Limit levels); and

    environmental mitigation measures, as recommended in the Project EIA Report.

(4)          Advice on the implementation of environmental protection and pollution control/mitigation measures as recommended in the Project EIA Report and summarised in the updated implementation schedule.

(5)          Drawings showing the Project area, any environmental sensitive receivers and the locations of the monitoring and control stations.

(6)          Graphical plots of the trends of monitored parameters over the past four months (the last month of the previous quarter and the present quarter) for representative monitoring stations annotated against:

   the major activities being carried out on site during the period;

   weather conditions during the period; and

   any other factors which might affect the monitoring results.

(7)          Advice on the solid and liquid waste management.

(8)          A summary of non-compliance (exceedances) of the environmental quality performance limits (Action and Limit levels).

(9)          An Impact Prediction Review will be prepared to compare project predictions with actual impacts for the purpose of assessing the accuracy of predictions on the EIA study.  The review will focus on the comparison between the EIA study predictions with the EM&A monitoring results.  If any excessive variation was found, a summary of investigation and follow up procedure taken will be addressed accordingly. 

(10)       A brief review of the reasons for and the implications of non-compliance including review of pollution sources and working procedures.

(11)       A summary description of the actions taken in the event of non-compliance and any follow-up procedures related to earlier non-compliance.

(12)       A summarised record of complaints received (written or verbal) for each media, liaison and consultation undertaken, actions and follow-up procedures taken.

(13)       Comments (e.g. effectiveness and efficiency of the mitigation measures), recommendations (e.g. any improvement in the EM&A programme) and conclusions for the quarter.

(14)       Project Proponents' contacts for the public to make enquiries.

12.7        Annual/ Final EM&A Review Reports

An annual/ final EM&A report will be prepared by the ET at the end of each construction year during the course of the Project.  A final EM&A report will be prepared by the ET at the end of the construction phase of the Project.  The annual/ final EM&A reports will contain at least the following information:

(1)        Executive Summary (1-2 pages).

(2)        Drawings showing the project area, any environmental sensitive receivers and the locations of the monitoring and control stations.

(3)        Basic project information including a synopsis of the project organization, contacts for key management staff and a synopsis of work undertaken during the course of the project.

(4)        A brief summary of EM&A requirements including:

    environmental mitigation measures as recommended in the project EIA Report;

    environmental impact hypotheses tested;

    environmental quality performance limits (Action and Limit Levels);

    monitoring parameters; and

    Event and Action Plans.

(5)        A summary of the implementation status of environmental protection and pollution control/mitigation measures as recommended in the project EIA Report and summarised in the updated implementation schedule.

(6)        Graphical plots and the statistical analysis of the trends of monitored parameters over the course of the project including the post-project monitoring for monitoring stations annotated against the following:

    the major activities being carried out on site during the period;

    weather conditions during the period; and

    any other factors which might affect the monitoring results.

(7)           A summary of non-compliance (exceedances) of the environmental quality performance limits (Action and Limit levels).

(8)           A review of the reasons for and the implications of non-compliance including review of pollution sources and working procedures as appropriate.

(9)           A description of the actions taken in the event of non-compliance.

(10)        A summary record of complaints received (written or verbal) for each media, liaison and consultation undertaken, actions and follow-up procedures taken.

(11)        A summary record of notifications of summonses and successful prosecutions for breaches of the current environmental protection/pollution control legislations, locations and nature of the breaches investigation, follow-up actions taken and results.

(12)        A comparison of the EM&A data with the EIA predictions with annotations and explanations for any discrepancies, including a review of the validity of EIA predictions and identification of shortcomings in the EIA recommendations.

(13)        A review of the monitoring methodology adopted and with the benefit of hindsight, comment on its effectiveness, including cost effectiveness.

(14)        A review of the success of the EM&A programme, including a review of the effectiveness and efficiency of the mitigation measures, and recommendations for any improvements in the EM&A programme.

(15)        A clear cut statement on the environmental acceptability of the project with reference to specific impact hypotheses and a conclusion to state the return to ambient and/or the predicted scenario as the EIA findings.

12.8        Water Quality Monitoring Report for the First Year of Operation of the LNG Terminal

A water quality monitoring report will be prepared by the ET every quarter and at the end of the first year of operation for the LNG Terminal to include the results of weekly marine water quality monitoring exercise for the first-year of LNG Terminal Operation.  The report will contain at least the following information:

(1)        Executive Summary (1-2 pages).

(2)        Brief project background information.

(3)        Drawings showing the project area, any environmental sensitive receivers and the locations of the monitoring and control stations.

(4)        A brief summary of monitoring requirements including:

     monitoring methodology;

     name of laboratory and types of equipment used and calibration details;

     parameters monitored;

     monitoring locations (and depth);

     monitoring date, time, frequency and duration;

     environmental quality performance limits (Action and Limit Levels);

     Event and Action Plans; and

     quality assurance (QA)/quality control (QC) results and detection limits.

(5)        Graphical plots and the statistical analysis of the trends of monitored parameters over the course of the monitoring including the monitoring stations annotated against the following:

     the major activities being carried out on site during the period;

     weather conditions during the period; and

     any other factors which might affect the monitoring results.

(6)     A summary of non-compliance (exceedances) of the environmental quality performance limits (Action and Limit levels).

(7)     A review of the reasons for and the implications of non-compliance including review of pollution sources and working procedures as appropriate.

(8)     A description of the actions taken in the event of non-compliance.

(9)     A summary record of complaints received (written or verbal) for each media, liaison and consultation undertaken, actions and follow-up procedures taken.

(10)   A summary record of notifications of summonses and successful prosecutions for breaches of the current environmental protection/pollution control legislations, locations and nature of the breaches investigation, follow-up actions taken and results.

(11)   A comparison of the EM&A data with the EIA predictions with annotations and explanations for any discrepancies, including a review of the validity of EIA predictions and identification of shortcomings in the EIA recommendations.

(12)   A review of the monitoring methodology adopted and with the benefit of hindsight, comment on its effectiveness, including cost effectiveness;

(13)   A review of the success of the EM&A programme, including a review of the effectiveness and efficiency of the mitigation measures, and recommendations for any improvements in the EM&A programme;

(14)   A clear cut statement on the environmental acceptability of the Project Operation and a conclusion to state the return to the predicted scenario as the EIA findings; and

(15)   For reporting at the end of the first year of operation, a review of the need to extend the operational monitoring, or not.

12.9        Data Keeping

The site documents such as the monitoring field records, laboratory analysis records, site inspection forms, etc. are not required to be included in the EM&A Reports for submission.  However, the documents will be kept by the ETL and be ready for inspection upon request.  Relevant information will be clearly and systematically recorded in the documents.  The monitoring data will also be recorded in magnetic media, and the soft copy will be available upon request.  The documents and data will be kept for at least one year after the completion of the EM&A works for the construction and operation phases.

12.10     Interim Notifications of Environmental Quality Limit Exceedances

With reference to Event and Action Plans, when the environmental quality limits are exceeded, the ET will notify the Contractor(s), Project Proponents and EPD as appropriate within 24 hours of the identification of the exceedance.  The notification will be followed up with each party on the results of the investigation, proposed action and success of the action taken, with any necessary follow-up proposals.  A sample template for the interim notifications is shown in Annex B.


                                                                                     



([1])      The ETL and IEC shall review the operational and monitoring data by the end of the first year of monitoring and make recommendations on whether an extension is required and for how long the extension should be.  The extension may not be continuous if no major increase in operation load is expected in the subsequent year(s) of operation.

([2])      Samuel K.Y. Hung (2015) Monitoring of Marine Mammals in Hong Kong Waters (2014-15): Final Report (1 April 2014 to 31 March 2015). Submitted to the Agriculture, Fisheries and Conservation Department of the Hong Kong SAR Government Tender Re.: AFCD/SQ/177/13

([3])      Detections (in terms of DPM) by PAM are used as a proxy to evaluate the occurrence of marine mammals and expressed as DPM/day.