Job No.: TCS00694/13

 

 

 

 

 

 

 

 

 

Agreement No. CE 45/2008 (CE)

Liantang/ Heung Yuen Wai

Boundary Control Point and Associated Works

 

 

 

 

 

 

 

 

 

Monthly Environmental Monitoring and Audit Report (No.92) – March 2021

 

 

 

 

 

 

 

 

Prepared For

 

 

 

 

Civil Engineering and Development Department (CEDD)

 

 

 

 

 

 

 

 

 

 

 

Date

Reference No.

Prepared By

Certified By

13 April 2021

TCS00694/13/600/R2625v1

Nicola Hon

 (Environmental Consultant)

Tam Tak Wing

(Environmental Team Leader)

 

Version

Date

Remarks

 1

13 April 2021

First Submission

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

executive summary

ES01            This is the 92nd monthly Environmental Monitoring & Audit (EM&A) report presenting the monitoring results and inspection findings for the reporting period from 1 to 31 March 2021 (hereinafter ‘the Reporting Period’).

Environmental Monitoring and Audit Activities

ES02            To facilitate the project management and implementation, Liantang/Heung Yuen Wai Boundary Control Point and Associated Works of the Project is divided to six CEDD contracts including Contract 2 (CV/2012/08), Contract 3 (CV/2012/09), Contract 4 (NE/2014/02), Contract 5 (CV/2013/03), Contract 6 (CV/2013/08) and Contract 7 (NE/2014/03) and an ArshSD contract (Contract SS C505).

ES03            In the Reporting Period, environmental monitoring activities under the EM&A programme in the Reporting Period are summarized in the following table.

Environmental Aspect

Environmental Monitoring Parameters / Inspection

Reporting Period

Number of Monitoring Locations to undertake

Total Occasions 

Air Quality

1-hour TSP

7 (#)

114

24-hour TSP

7 (#)

39

Construction Noise

Leq(30min) Daytime

8 (~)

36

Water Quality

Water in-situ measurement and/or sampling

WM1 & WM1-C

14 Scheduled & 0 extra

WM2A(a) & WM2A-Cx

14 Scheduled & 0 extra

WM2B & WM2B-C

14 Scheduled & 0 extra (*)

WM3x &WM3-C

14 Scheduled & 0 extra (*)

WM4, WM4-CA &WM4-CB

14 Scheduled & 0 extra

Ecology

Woodland compensation

i)      General Health condition of planted species

ii)     Survival of planted species

9 Quadrats and transect

0

Wetland compensation

i)        Site inspection

Contract 6

5

Joint Site Inspection / Audit

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

Contract 3

5

Contract 6

5

Remark:

                          (*) Water sampling was unable to carry out at WM2B and WM2B-C in the Reporting Period due to shallow water. Besides, WM3-C was also unable to carry out in the Reporting Period due to shallow water.  (Water depth under 150mm).

                          (#) Number of air monitoring location changed to 7 since the partial termination proposal approved by EPD on 9 Jul 2020.

                          (~) Number of noise monitoring location changed to 8 since the partial termination proposal approved by EPD on 9 Jul 2020.

 

ES04            As the major construction work under Contract 3 and Contract 6 were substantially completed. In view of insignificant environmental impacts of the remaining outstanding construction works of Contracts 3 and 6, the revised “proposal for termination of the Construction Phase Environmental Monitoring & Audit (EM&A) Programme for the remaining Contract 3 and Contract 6 of the Project” which certified by ETL and verified by IEC, was submitted to Environmental Protection Department (EPD) on 5 February 2021. Revised termination proposal for Contract 3 was submitted to EPD on 9 April 2021 and revised termination proposal for Contract 6 was still under revised by ETL.

 

Action and Limit (A/L) Levels exceedance

ES05            In the Reporting Period, no exceedance was recorded for construction noise, air quality and water quality monitoring. The summary of exceedance in the Reporting Period is shown below.

Environmental Aspect

Monitoring Parameters

Action Level

Limit Level

Event & Action

NOE Issued

Investigation Result

Project related exceedance

Corrective Actions

Air Quality

1-hour TSP

0

0

0

--

--

--

24-hour TSP

0

0

0

--

--

--

Construction Noise

Leq(30min) Daytime

0

0

0

--

--

--

Water Quality

DO

0

0

0

--

--

--

Turbidity

0

0

0

--

--

SS

0

0

0

 

Environmental Complaint

ES06            No environmental complaint was recorded in the Reporting Period.

Notification of Summons and Successful Prosecutions

ES07            No environmental summons and prosecutions were recorded in the Reporting Period. 

Reporting Change

ES08            No reporting change was recorded in the Reporting period.

Site Inspection

ES09            In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 3 has been carried out by the RE, ET, IEC and the Contractor on 3, 12, 19, 25 and 31 March 2021.  No non-compliance was noted during the site inspection. 

ES10            In the Reporting Period, joint site inspection to evaluate the site environmental performance at Contract 6 has been carried out by the RE, ET, IEC and the Contractor on 3, 12, 19, 25 and 30 March 2021.  No non-compliance was noted during the site inspection. 

Future Key Issues

ES11            As wet season is approaching, preventive measures for muddy water or other water pollutants from site surface flow to local stream such as Kong Yiu Channel, Ma Wat Channel, Ping Yuen River, Kwan Tei River or public area should be properly maintained.  The Contractors should paid special attention on water quality mitigation measures and fully implement according ISEMM of the EM&A Manual.

ES12            In addition, all effluent discharge shall be ensure to fulfill Technical Memorandum of Effluent Discharged into Drainage and Sewerage Systems, inland and Coastal Waters criteria or discharge permits stipulation.

ES13            Construction noise would be a key environmental issue during construction work of the Project.  Noise mitigation measures such as using quiet plants should be implemented in accordance with the EM&A requirement.

 

 

 

 

Table of Contents

1     Introduction   1

1.1            Project Background   1

1.2            Report Structure  1

2     Project Organization and Construction progress  3

2.1            Construction Contract Packaging   3

2.2            Project Organization   5

2.3            Concurrent Projects  7

2.4            Construction Progress  7

2.5            Summary of Environmental Submissions  8

3     Summary of Impact Monitoring Requirements  10

3.1            General  10

3.2            Monitoring Parameters  10

3.3            Monitoring Locations  10

3.4            Monitoring Frequency and Period   12

3.5            Monitoring Equipment  13

3.6            Monitoring Methodology   15

3.7            Equipment Calibration   17

3.8            Derivation of Action/Limit (A/L) Levels  17

3.9            Data Management and Data QA/QC Control  18

4     Air Quality Monitoring   20

4.1            General  20

4.2            Air Quality Monitoring Results  20

5     Construction Noise Monitoring   23

5.1            General  23

5.2            Noise Monitoring Results  23

6     Water Quality Monitoring   24

6.1            General  24

6.2            Results of Water Quality Monitoring   24

7     Ecology Monitoring   26

7.1            Monitoring on Woodland Compensation   26

7.2            Monitoring on Wetland Compensation   26

8     Waste Management   27

8.1            General Waste Management  27

8.2            Records of Waste Quantities  27

9     Site Inspection   28

9.1            requirements  28

9.2            Findings / Deficiencies During the Reporting Month   28

10   Environmental Complaint and Non-Compliance   30

10.1          Environmental Complaint, Summons and Prosecutions  30

11   Implementation Status of Mitigation Measures  32

11.1          General Requirements  32

11.2          Tentative Construction Activities in the Coming Month   33

11.3          Key Issues for the Coming Month   33

12   Conclusions and Recommendations  34

12.1          Conclusions  34

12.2          Recommendations  34

 

List of TABLES

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

Table 3-1        Summary of EM&A Requirements

Table 3-2        Impact Monitoring Stations - Air Quality

Table 3-3        Impact Monitoring Stations - Construction Noise

Table 3-4        Impact Monitoring Stations - Water Quality

Table 3-5        Air Quality Monitoring Equipment

Table 3-6        Construction Noise Monitoring Equipment

Table 3-7        Water Quality Monitoring Equipment

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

Table 3-9        Action and Limit Levels for Construction Noise

Table 3-10      Action and Limit Levels for Water Quality

Table 4-1        Summary of 24-hour and 1-hour TSP Monitoring Results – AM2

Table 4-2        Summary of 24-hour and 1-hour TSP Monitoring Results – AM3

Table 4-3        Summary of 24-hour and 1-hour TSP Monitoring Results – AM4b

Table 4-4        Summary of 24-hour and 1-hour TSP Monitoring Results – AM5a

Table 4-5        Summary of 24-hour and 1-hour TSP Monitoring Results – AM6

Table 4-6        Summary of 24-hour and 1-hour TSP Monitoring Results – AM7b

Table 4-7        Summary of 24-hour and 1-hour TSP Monitoring Results – AM9b

Table 5-1        Summary of Construction Noise Monitoring Results

Table 5-2        Summary of Construction Noise Monitoring Results

Table 6-1        Water Quality Monitoring Results Associated Contracts 3

Table 6-2        Water Quality Monitoring Results Associated Contracts 6

Table 6-3        Water Quality Monitoring Results Associated Contract 6

Table 6-4        Water Quality Monitoring Results Associated Contracts 6

Table 6-5        Action and Limit (A/L) Levels Exceedance Recorded

Table 8-1        Summary of Quantities of Inert C&D Materials for the Project

Table 8-2        Summary of Quantities of C&D Wastes for the Project

Table 9-1        Site Observations for Contract 3

Table 9-2        Site Observations for Contract 6

Table 10-1      Statistical Summary of Environmental Complaints

Table 10-2      Statistical Summary of Environmental Summons

Table 10-3      Statistical Summary of Environmental Prosecutions

Table 11-1      Environmental Mitigation Measures

 

List of Appendices

Appendix A    Layout Plan of the Project

Appendix B    Organization Chart

Appendix C    3-month rolling construction program

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

Appendix E    Monitoring Locations for Impact Monitoring

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

Appendix G    Event and Action Plan

Appendix H    Impact Monitoring Schedule

Appendix I     Database of Monitoring Result

Appendix J     Graphical Plots for Monitoring Result

Appendix K    Meteorological Data

Appendix L    Waste Flow Table

Appendix M   Implementation Schedule for Environmental Mitigation Measures

Appendix N    Implementation Status of Mitigation Measures for Operation Phase

Appendix O    Implementation Status of water quality mitigation measures

 

 

1                    Introduction

1.1              Project Background

1.1.1                 Civil Engineering and Development Department is the Project Proponent and the Permit Holder of Agreement No. CE 45/2008 (CE) Liantang / Heung Yuen Wai Boundary Control Point and Associated Works, which is a Designated Project to be implemented under Environmental Permit number EP-404/2011/D granted on 20 January 2017.

 

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

 

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

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

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

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

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

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

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

 

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

 

1.1.5                 This is 92nd monthly EM&A report presenting the monitoring results and inspection findings for reporting period from 1 to 31 March 2021.

 

1.2              Report Structure

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

Section 1         Introduction

Section 2         Project Organization and Construction Progress

Section 3         Summary of Impact Monitoring Requirements

Section 4         Air Quality Monitoring

Section 5         Construction Noise Monitoring

Section 6         Water Quality Monitoring

Section 7         Ecology Monitoring

Section 8         Waste Management

Section 9         Site Inspections

Section 10       Environmental Complaints and Non-Compliance

Section 11       Implementation Status of Mitigation Measures

Section 12       Conclusions and Recommendations

 

 

 

2                    Project Organization and Construction progress

2.1              Construction Contract Packaging

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

·              Contract 2 (CV/2012/08)

·              Contract 3 (CV/2012/09)

·              Contract 4 (NE/2014/02)

·              Contract 5 (CV/2013/03)

·              Contract 6 (CV/2013/08)

·              Contract 7 (NE/2014/03)

·              ArchSD Contract No. SS C505

 

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

 

Contract 2 (CV/2012/08)

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

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

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

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

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

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

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

 

Contract 3 (CV/2012/09)

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

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

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

·                widening of the existing Fanling Highway (HyD’s entrustment works);

·                demolishing existing Kiu Tau vehicular bridge and Kiu Tau footbridge and reconstruction of the existing Kiu Tau Footbridge (HyD’s entrustment works); and

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

 

Contract 4 (NE/2014/02)

2.1.5                 Contract 4 has awarded in mid-April 2016 and construction work was commenced on 2 May 2017.  The scope of work of the Contract 4 includes:

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

 

 

 

 

Contract 5 (CV/2013/03)

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

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

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

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

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

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

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

 

Contract 6 (CV/2013/08)

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

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

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

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

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

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

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

 

Contract 7 (NE/2014/03)

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

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

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

 

ArchSD Contract No. SS C505

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

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

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

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

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

Ÿ    a public carpark; and

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

 

2.2              Project Organization

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

 

Civil Engineering and Development Department (CEDD)

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

 

Architectural Services Department (ArchSD)

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

 

Environmental Protection Department (EPD)

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

 

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

2.2.5                 Ronald Lu & Partners (Hong Kong) Ltd is appointed by ArchSD as an Architect for Contract SS C505 Liantang/ Heung Yuen Wai Boundary Control Point (BCP) – BCP Buildings and Associated Facilities.  It responsible for overseeing the construction works of Contract SS C505 and for ensuring that the works are undertaken by the Contractor in accordance with the specification and contract requirements. The duties and responsibilities of the Architect with respect to EM&A are:

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

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

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

Ÿ    Participate in joint site inspection by the ET and IEC

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

Ÿ    Adhere to the procedures for carrying out complaint investigation

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

 

Engineer or Engineers Representative (ER)

2.2.6                 The ER is responsible for overseeing the construction works and for ensuring that the works are undertaken by the Contractor in accordance with the specification and contract requirements. The duties and responsibilities of the ER with respect to EM&A are:

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

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

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

·           Participate in joint site inspection by the ET and IEC

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

·           Adhere to the procedures for carrying out complaint investigation

·           Liaison with DSD, Engineer/Engineer’s Representative, ET, IEC and the Contractor of the “Construction of the DSD’s Regulation of Shenzhen River Stage 4 (RSR 4)” Project discussing regarding the cumulative impact issues.

 

The Contractor(s)

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

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

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

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

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

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

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

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

·           Adhere to the procedures for carrying out complaint investigation

 

Environmental Team (ET)

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

 

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

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

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

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

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

·           Audit environmental conditions on site

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

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

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

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

·           Adhere to the procedures for carrying out complaint investigation

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

 

Independent Environmental Checker (IEC)

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

 

2.2.12             The Independent Environmental Checker (IEC) should not be in any way an associated body of the Contractor or the ET for the Project. The IEC should be employed by the Permit Holder (i.e., CEDD) prior to the commencement of the construction of the Project. The IEC should have at least 10 years’ experience in EM&A and have relevant professional qualifications. The appointment of IEC should be subject to the approval of EPD. The IEC should:

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

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

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

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

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

·           Check compliance with the procedures for carrying out complaint investigation

·           Check the effectiveness of corrective measures

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

·           Check that the mitigation measures are effectively implemented

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

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

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

 

2.3              Concurrent Projects

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

                                (a)            Regulation of Shenzhen River Stage IV;

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

                                (c)            Construction of BCP facilities in Shenzhen.

 

2.4              Construction Progress

2.4.1                 Following the partial commencement of the Project, apart from the construction work under Contract 3 and Contract 6, major construction work under Contract 2, Contract 4, Contract 7 and Contract SS C505 were substantially completed.  The construction progresses of the project and remaining works are summarized in below.  Moreover, 3-month rolling construction program for all the current contracts is enclosed in Appendix C. 

 

Contract 3 (CV/2012/09)

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

Ÿ   Laying of rising mains

 

Contract 6 (CV/2013/08)

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

Ÿ   Water Pipe Connection Work

Ÿ   Landscaping

Ÿ   Implementation of Wetland

 

2.5              Summary of Environmental Submissions

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

Ÿ   Project Layout Plans of Contracts 2, 3, 4, 5, 6, 7 and SS C505

Ÿ   Landscape Plan

Ÿ   Topsoil Management Plan

Ÿ   Environmental Monitoring and Audit Programme

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

Ÿ   Waste Management Plan of the Contracts 2, 3, 4, 5, 6, 7 and SS C505

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

Ÿ   Vegetation Survey Report

Ÿ   Woodland Compensation Plan

Ÿ   Habitat Creation and Management Plan

Ÿ   Wetland Compensation Plan

 

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

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

Item

Description

License/Permit Status

Ref. no.

Effective Date

Expiry Date

Contract 3

1

Air pollution Control (Construction Dust) Regulation

Ref. No: 362101

17 Jul 2013

Till Contract ends

2

Chemical Waste Producer Registration

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

 

7 Oct 2013

Till Contract ends

3

Water Pollution Control Ordinance - Discharge License

No.:WT00032188 – 2018

20 Sep 2018

31 Aug 2023

4

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Account No. 7017914

2 Aug 2013

Till Contract ends

Contract 6

1

Air pollution Control (Construction Dust) Regulation

Ref. No: 390614

29 Jun 2015

Till the end of Contract

2

Chemical Waste Producer Registration

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

31 Aug 2015

Till the end of Contract

3

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Account No. 7022707

9 Jul 2015

Till the end of Contract

4

Water Pollution Control Ordinance - Discharge License

No.:WT00024574-2016

31 May 2016

31 May 2021

No.:WT00024576-2016

31 May 2016

31 May 2021

No.:WT00024742-2016

14 June 2016

30 June 2021

No.:WT00024746-2016

14 June 2016

30 June 2021

3                    Summary of Impact Monitoring Requirements

3.1              General

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

 

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

 

3.2              Monitoring Parameters

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

•                     Air quality;

•                     Construction noise; and

•                     Water quality

 

3.2.2                 A summary of the monitoring parameters is presented in Table 3-1.

Table 3-1         Summary of EM&A Requirements

Environmental Issue

Parameters

Air Quality

Ÿ  1-hour TSP by Real-Time Portable Dust Meter; and

Ÿ  24-hour TSP by High Volume Air Sampler.

Noise

Ÿ  Leq(30min) in normal working days (Monday to Saturday) 07:00-19:00 except public holiday; and

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

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

Water Quality

In-situ Measurements

Ÿ  Dissolved Oxygen Concentration (mg/L);

Ÿ  Dissolved Oxygen Saturation (% );

Ÿ  Turbidity (NTU);

Ÿ  pH unit;

Ÿ  Water depth (m); and

Ÿ  Temperature (℃).

Laboratory Analysis

Ÿ  Suspended Solids (mg/L)

 

3.3              Monitoring Locations

3.3.1                 The designated monitoring locations as recommended in the EM&A Manual are shown in Appendix D.  As the access to some of the designated monitoring locations was questionable due to safety reason or denied by the landlords, alternative locations therefore have had proposed. The latest alternative monitoring locations has been updated in the revised EM&A Programme (Rev.7) which approved by EPD on 7 April 2017.  Besides, in view of Location AM1b was demolished and returned to the landlord on 27 April 2018, alterative location AM1c was proposed by ET and approved by EPD on 26 November 2018.  Table 3-2, Table 3-3 and Table 3-4 listed the air quality, construction noise and water quality monitoring locations for the Project and a map showing these monitoring stations is presented in Appendix E.

 

3.3.2                 Following the proposal for partial termination of the construction phase EM&A programme for Contract 2, 4, 7 and SSC505 approved by EPD on 9 July 2020.  The corresponding air quality monitoring stations including AM1c and AM8 were ceased after last monitoring carried out on 7 July 2020 and 10 July 2020 respectively.  Besides, the corresponding noise monitoring stations including NM1 and NM7 were ceased after last monitoring carried out on 7 July 2020 and 10 July 2020 respectively. 

Table 3-2        Impact Monitoring Stations - Air Quality

Station ID

Description

Works Area

Related to the Work Contract

AM1c (*)

($)

Open area of Tsung Yuen Ha Village No. 63

BCP

SS C505

Contract 7

AM2

Village House near Lin Ma Hang Road

LMH to Frontier Closed Area

Contract 6

AM3

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

LMH to Frontier Closed Area

Contract 6

AM4b^

House no. 10B1 Nga Yiu Ha Village

LMH to Frontier Closed Area

Contract 6

AM5a^

Ping Yeung Village House

Ping Yeung to Wo Keng Shan

Contract 6

AM6

Wo Keng Shan Village House

Ping Yeung to Wo Keng Shan

Contract 6

AM7b@

Loi Tung Village House

Sha Tau Kok Road

Contract 2

Contract 6

AM8 ($)

Po Kat Tsai Village No. 4

Po Kat Tsai

Contract 2

AM9b#

Nam Wa Po Village House No. 80

Fanling

Contract 3

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

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

^ Proposal for change of air quality monitoring locations was enclosed in the updated EM&A Programme which approval by EPD on 29 Mar 2016. Besides, Location AM1b was temporary suspended (24-hour TSP monitoring) since 27 April 2018 as the rented land was demolished and returned to the landlord.

* Revised proposal for alterative location AM1c was submitted to EPD on 31 October 2018 after verified by the IEC and it was approved by EPD (EPD’s ref.: ( ) in Ax (1) to EP 2/N7/A/52 Pt.26 dated 26 November 2018).

$ AM1c and AM8 were ceased after last monitoring carried out on 7 July 2020 and 10 July 2020 respectively according to Partial Termination Proposal approved by EPD on 9 July 2020.

 

Table 3-3        Impact Monitoring Stations - Construction Noise

Station ID

Description

Works Area

Related to the Work Contract

NM1 ($)

Tsung Yuen Ha Village House No. 63

BCP

SS C505

Contract 7

NM2a#

Village House near Lin Ma Hang Road

Lin Ma Hang to Frontier Closed Area

Contract 6

NM3

Ping Yeung Village House (facade facing northeast)

Ping Yeung to Wo Keng Shan

Contract 6

NM4

Wo Keng Shan Village House

Ping Yeung to Wo Keng Shan

Contract 6

NM5

Village House, Loi Tung

Sha Tau Kok Road

Contract 2,

Contract 6

NM6

Tai Tong Wu Village House 2

Sha Tau Kok Road

Contract 2,

Contract 6

NM7 ($)

Po Kat Tsai Village

Po Kat Tsai

Contract 2

NM8

Village House, Tong Hang

Fanling

Contract 2

Contract 3

NM9

Village House, Kiu Tau Village

Fanling

Contract 3

NM10

Nam Wa Po Village House No. 80

Fanling

Contract 3

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

$ NM1 and NM7 were ceased after last monitoring carried out on 7 July 2020 and 10 July 2020 respectively according to Partial Termination Proposal approved by EPD on 9 July 2020.

 

Table 3-4        Impact Monitoring Stations - Water Quality

Station ID

Description

Coordinates of Designated / Alternative Location

Nature of the location

Related to the Work Contract

Easting

Northing

WM1

Downstream of Kong Yiu Channel

833 679

845 421

Alternative location located at upstream 51m of the designated location

Contract 6

WM1- Control

Upstream of Kong Yiu Channel

834 185

845 917

NA

Contract 6

WM2A

Downstream of River Ganges

834 204

844 471

Alternative location located at upstream 81m of the designated location

Contract 6

WM2A(a)*

Downstream of River Ganges

834 191

844 474

Alternative location located at upstream 70m of the designated location

Contract 6

WM2A- Controlx#

Upstream of River Ganges

835 377

844 188

Alternative location located at upstream 160m of the designated location

Contract 6

WM2B

Downstream of River Ganges

835 433

843 397

NA

Contract 6

WM2B- Control

Upstream of River Ganges

835 835

843 351

Alternative location located at downstream 31m of the designated location

Contract 6

WM3x#

Downstream of River Indus

836 206

842 270

Alternative location located at downstream 180m of the designated location

Contract 6

WM3- Control

Upstream of River Indus

836 763

842 400

Alternative location located at downstream 26m of the designated location

Contract 6

WM4

Downstream of Ma Wat Channel

833 850

838 338

Alternative location located at upstream 11m of the designated location

Contract 3

WM4– Control A

Kau Lung Hang Stream

834 028

837 695

Alternative location located at downstream 28m of the designated location

Contract 3

WM4– Control B

Upstream of Ma Wat Channel

833760

837395

Alternative location located at upstream 15m of the designated location

Contract 3

Note: EPD has approved the revised EM&A Programme (Rev.7) which proposed that (1) if the measured water depth of the monitoring station is lower than 150 mm, alternative location based on the criteria were selected to perform water monitoring; and (2) If no suitable alternative location could be found within 15m far from the original location, the sampling at that location will be cancelled since sampling at too far from the designated location could not make a representative sample in accordance with the updated EM&A Programme (Rev. 07) (Section 4.1.4) (EPD ref.: ( ) in EP2/N7/A/52 Ax(1) Pt.20 dated 7 April 2017)

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

(#)  Proposal for the change of water quality monitoring location (WM3x and WM2A-Cx was included in the EM&A Programme Rev .05 which approved by EPD on 29 March 2016 (EPD ref.: (3) in EP2/N7/A/52 Ax(1) Pt.19)

 

3.4              Monitoring Frequency and Period

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

 

Air Quality Monitoring

3.4.1                 Frequency of impact air quality monitoring is as follows:

Ÿ   1-hour TSP

3 times every six days during course of works

Ÿ   24-hour TSP

Once every 6 days during course of works.

 

Noise Monitoring

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

 

Water Quality Monitoring

3.4.3                 The water quality monitoring frequency shall be 3 days per week during course of works.  The interval between two sets of monitoring shall not be less than 36 hours.

 

3.5              Monitoring Equipment

Air Quality Monitoring

3.5.1                 The 24-hour and 1-hour TSP levels shall be measured by following the standard high volume sampling method as set out in the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B.  If the ET proposes to use a direct reading dust meter to measure 1-hour TSP levels, it shall submit sufficient information to the IEC to approve.

 

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

 

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

Table 3-5         Air Quality Monitoring Equipment

Equipment

Model

24-Hr TSP

High Volume Air Sampler

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

Calibration Kit

TISCH Model TE-5025A*

1-Hour TSP

Portable Dust Meter

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

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

 

Wind Data Monitoring Equipment

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

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

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

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

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

 

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

 

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

 

Noise Monitoring

3.5.7                 Sound level meter in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications shall be used for carrying out the noise monitoring.  The sound level meter shall be checked using an acoustic calibrator.  The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m/s.

 

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

Table 3-6         Construction Noise Monitoring Equipment

Equipment

Model

Integrating Sound Level Meter

Rion NL-52*

Calibrator

Rion NC-74*

Portable Wind Speed Indicator

Testo Anemometer

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

 

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

 

Water Quality Monitoring

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

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

•                 a temperature of between 0 and 45 degree Celsius.

 

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

 

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

 

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

 

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

 

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

 

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

 

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

Table 3-7         Water Quality Monitoring Equipment

Equipment

Model

Water Depth Detector

Eagle Sonar or tape measures

Water Sampler

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

Thermometer & DO meter

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

pH meter

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

Turbidimeter

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

Sample Container

High density polythene bottles (provided by laboratory)

Storage Container

‘Willow’ 33-liter plastic cool box with Ice pad

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

 

3.6              Monitoring Methodology

1-hour TSP Monitoring

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

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

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

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

 

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

 

24-hour TSP Monitoring

3.6.3                 The equipment used for 24-hour TSP measurement is Tisch Environmental, Inc. Model TE-5170 TSP high volume air sampling system, which complied with EPA Code of Federal Regulation, Appendix B to Part 50. The High Volume Air Sampler (HVS) consists of the following:

(a.)         An anodized aluminum shelter;

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

(c.)         A blower motor assembly;    

(d.)        A continuous flow/pressure recorder;

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

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

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

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

 

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

 

Noise Monitoring

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

 

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

 

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

 

Water Quality

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

 

Sampling Procedure

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

 

3.6.11             If the water level of a monitoring station is too shallow when sampling, sediment would be disturbed which affecting the accuracy of water quality monitoring.  In order to avoid disturbing sediment, depth limits should be set up for the water sampling for the ease of reference.  When the measured water depth of the monitoring station (both control and impact stations) is lower than 150mm, water monitoring would not be to perform at that monitoring location.  Instead, the monitoring location will be moved to a temporary alternative location monitoring location based on the criteria below:-

(a)    the alternative location should be either upstream or downstream of the original location and at the same the river/drain channel

(b)   the alternative location should be within 15m far from the original location

(c)    if no suitable alternative location could be found within 15m far from the original location, the sampling at that location will be cancelled since sampling at too far from the designated location could not make a representative sample.

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

 

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

 

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

 

In-situ Measurement

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

 

3.6.16             AZ8685 pH pen-style meter is used for in-situ pH measurement.  The pH meter is capable of measuring pH in the range of 0 – 14 and readable to 0.1.

 

3.6.17             A portable Hach 2100Q Turbidimeter is used for in-situ turbidity measurement. The turbidity meter is capable of measuring turbidity in the range of 0 – 1000 NTU. 

 

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

 

Laboratory Analysis

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

 

3.7              Equipment Calibration

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

 

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

 

3.7.3                 The sound level meter and calibrator are calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme at yearly basis.

 

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

 

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

 

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

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

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

Monitoring Station

Action Level (mg /m3)

Limit Level (mg/m3)

1-hour TSP

24-hour TSP

1-hour TSP

24-hour TSP

AM1c ($)

265

143

500

260

AM2

268

149

AM3

269

145

AM4b

267

148

AM5a

268

143

AM6

269

148

AM7b

275

156

AM8 ($)

269

144

AM9b

271

151

$ AM1c and AM8 were ceased after last monitoring carried out on 7 July 2020 and 10 July 2020 respectively according to Partial Termination Proposal approved by EPD on 9 July 2020.

 

Table 3-9         Action and Limit Levels for Construction Noise

Monitoring Location

Action Level

Limit Level in dB(A)

Time Period: 0700-1900 hours on normal weekdays

NM1($), NM2a, NM3, NM4, NM5, NM6, NM7($), NM8, NM9, NM10

When one or more documented complaints are received

75 dB(A)Note 1 & Note 2

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

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

$ NM1 and NM7 were ceased after last monitoring carried out on 7 July 2020 and 10 July 2020 respectively according to Partial Termination Proposal approved by EPD on 9 July 2020.

 

 

Table 3-10       Action and Limit Levels for Water Quality

Parameter

Performance criteria

Monitoring Location

WM1

WM2A(a)

WM2B

WM3x

WM4

DO (mg/L)

Action Level

(*)4.23

(**)4.00

(*)4.74

(**)4.00

(*)4.14

Limit Level

(#)4.19

(**)4.00

(#)4.60

(**)4.00

(#)4.08

Turbidity (NTU)

Action Level

51.3

24.9

11.4

13.4

35.2

AND  120% of upstream control station of the same day

Limit Level

67.6

33.8

12.3

14.0

38.4

AND  130% of upstream control station of the same day

SS (mg/L)

Action Level

54.5

14.6

11.8

12.6

39.4

AND  120% of upstream control station of the same day

Limit Level

64.9

17.3

12.4

12.9

45.5

AND  130% of upstream control station of the same day

Remarks:

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

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

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

 

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

 

3.9              Data Management and Data QA/QC Control

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

 

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

4                    Air Quality Monitoring

4.1              General

4.1.1                 Proposal for partial termination of the construction phase EM&A programme for Contract 2, Contract 4, Contract 7 and Contract SS C505 was approved by EPD on 9 July 2020 (EPD’s ref.: ( ) in Ax (3) to EP 2/N7/A/52 Pt.17).  The corresponding air quality monitoring stations AM1c and AM8 ceased accordingly, while monitoring at other monitoring stations continued in the Reporting Period. 

 

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

 

4.2              Air Quality Monitoring Results

4.2.1                 In the Reporting Period, a total of 114 events of 1-hour TSP and 39 events 24-hours TSP monitoring were carried out and the monitoring results are summarized in Tables 4-1 to 4-7.  The detailed 24-hour TSP monitoring data are presented in Appendix I and the relevant graphical plots are shown in Appendix J.

 

Table 4-1         Summary of 24-hour and 1-hour TSP Monitoring Results – AM2

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

5-Mar-21

89

1-Mar-21

9:48

56

63

60

11-Mar-21

115

6-Mar-21

9:27

47

53

49

17-Mar-21

107

12-Mar-21

9:40

79

84

82

23-Mar-21

98

18-Mar-21

13:13

68

72

71

29-Mar-21

84

24-Mar-21

9:25

71

73

70

--

--

30-Mar-21

9:18

79

76

77

Average

(Range)

99

(84 – 115)

Average

(Range)

68

(47 – 84)

 

Table 4-2         Summary of 24-hour and 1-hour TSP Monitoring Results – AM3

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

5-Mar-21

77

1-Mar-21

9:39

63

66

59

11-Mar-21

72

6-Mar-21

9:19

44

50

47

17-Mar-21

75

12-Mar-21

9:35

76

82

78

23-Mar-21

136

18-Mar-21

13:07

73

71

75

29-Mar-21

67

24-Mar-21

9:20

70

77

74

--

--

30-Mar-21

9:30

80

76

78

Average

(Range)

85

(67 – 136)

Average

(Range)

69

 (44 – 82)

 

Table 4-3         Summary of 24-hour and 1-hour TSP Monitoring Results – AM4b

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

1-Mar-21

29

4-Mar-21

9:33

59

63

56

6-Mar-21

79

10-Mar-21

9:36

64

73

68

12-Mar-21

126

16-Mar-21

9:15

67

72

66

18-Mar-21

59

22-Mar-21

9:23

65

66

63

24-Mar-21

123

27-Mar-21

9:19

69

74

68

30-Mar-21

54

--

--

--

--

--

Average

(Range)

78

(29 – 126)

Average

(Range)

66

(56 – 74)

 

Table 4-4         Summary of 24-hour and 1-hour TSP Monitoring Results – AM5a

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

1-Mar-21

55

4-Mar-21

9:26

56

59

53

6-Mar-21

52

10-Mar-21

9:31

66

74

71

12-Mar-21

51

16-Mar-21

9:21

66

65

64

18-Mar-21

46

22-Mar-21

9:30

73

70

70

24-Mar-21

112

27-Mar-21

9:28

73

71

76

30-Mar-21

42

--

--

--

--

--

Average

(Range)

60

(42 – 112)

Average

(Range)

67

(53 – 76)

 

 

 

Table 4-5         Summary of 24-hour and 1-hour TSP Monitoring Results – AM6

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

1-Mar-21

58

4-Mar-21

13:15

60

63

67

6-Mar-21

60

10-Mar-21

9:21

70

77

72

12-Mar-21

122

16-Mar-21

9:32

68

66

63

18-Mar-21

98

22-Mar-21

9:40

69

70

67

24-Mar-21

48

27-Mar-21

12:50

73

71

67

30-Mar-21

97

--

--

--

--

--

Average

(Range)

81

(48 – 122)

Average

(Range)

68

 (60 – 77)

 

Table 4-6         Summary of 24-hour and 1-hour TSP Monitoring Results – AM7b

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

1-Mar-21

61

4-Mar-21

13:47

62

66

72

6-Mar-21

51

10-Mar-21

10:09

75

73

72

12-Mar-21

64

16-Mar-21

13:03

83

75

70

18-Mar-21

38

22-Mar-21

9:55

74

78

77

24-Mar-21

106

27-Mar-21

13:45

76

73

70

30-Mar-21

38

--

--

--

--

--

Average

(Range)

60

(38 – 106)

Average

(Range)

73

(62– 83)

 

Table 4-7         Summary of 24-hour and 1-hour TSP Monitoring Results – AM9b

Date

24-hour TSP (mg/m3)

1-hour TSP (mg/m3)

Date

Start Time

1st reading

2nd reading

3rd reading

5-Mar-21

72

1-Mar-21

10:28

75

73

72

11-Mar-21

46

6-Mar-21

9:13

60

65

73

17-Mar-21

30

12-Mar-21

11:21

77

70

72

23-Mar-21

124

18-Mar-21

9:17

74

65

70

29-Mar-21

32

24-Mar-21

10:48

68

75

74

--

--

30-Mar-21

13:10

76

79

74

Average

(Range)

61

(30 – 124)

Average

(Range)

72

(60 – 79)

 

4.2.2                 As shown in Tables 4-1 to 4-7, all the 1-hour and 24-hour TSP monitoring results were below the Action/Limit Levels.  No Notification of Exceedance (NOE) was issued in this Reporting Period. 

 

4.2.3                 The meteorological data during the impact monitoring days are summarized in Appendix K.

 

 

5                    Construction Noise Monitoring

5.1              General

5.1.1                 Proposal for partial termination of the construction phase EM&A programme for Contract 2, Contract 4, Contract 7 and Contract SS C505 was approved by EPD on 9 July 2020 (EPD’s ref.: ( ) in Ax (3) to EP 2/N7/A/52 Pt.17).  The corresponding noise quality monitoring stations NM1 and NM7 ceased accordingly, while monitoring at other monitoring stations in the Reporting Period. 

 

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

 

5.2              Noise Monitoring Results

5.2.1                 In the Reporting Period, a total of 36 events noise measurements were carried out at the designated locations.  The sound level meter was set in 1m from the exterior of the building façade including noise monitoring locations NM3, NM4, NM5, NM6, NM8 and NM9.  Therefore, no façade correction (+3 dB(A)) is added according to acoustical principles and EPD guidelines.  However, free-field status were performed at NM2a and NM10 and façade correction (+3 dB(A)) has added according to the requirement in this month.  The noise monitoring results at the designated locations are summarized in Tables 5-1 and 5-2.  The detailed noise monitoring data are presented in Appendix I and the relevant graphical plots are shown in Appendix J.

Table 5-1         Summary of Construction Noise Monitoring Results

Construction Noise Level (Leq30min), dB(A)

Date

NM2a(*)

NM8

NM9

NM10(*)

1-Mar-21

67

57

64

62

12-Mar-21

69

56

61

59

18-Mar-21

65

55

62

60

24-Mar-21

65

52

62

63

30-Mar-21

64

57

61

60

Limit Level

75 dB(A)

Remarks

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

 

Table 5-2        Summary of Construction Noise Monitoring Results

Construction Noise Level (Leq30min), dB(A)

 

Date

NM3

NM4

NM5

NM6

 

4-Mar-21

58

66

53

59

 

10-Mar-21

57

65

56

57

 

16-Mar-21

57

64

54

57

 

22-Mar-21

60

57

54

62

 

Limit Level

75 dB(A)

 

 

54

 

5.2.2                 As shown in Tables 5-1 and 5-2, no construction noise measurement results that exceeded the Limit Level were recorded.  Moreover, no valid noise complaint (which triggered Action Level exceedance) was recorded in the Reporting Period.

 

6                    Water Quality Monitoring

6.1              General

6.1.1                 Proposal for partial termination of the construction phase EM&A programme for Contract 2, Contract 4, Contract 7 and Contract SS C505 was approved by EPD on 9 July 2020 (EPD’s ref.: ( ) in Ax (3) to EP 2/N7/A/52 Pt.17). In the Reporting Period, construction works under the project has been undertaken in Contracts 3, and 6 and water quality monitoring was performed at all designated locations.  The water quality monitoring schedule is presented in Appendix H.  The monitoring results are summarized in the following sub-sections.

 

6.2              Results of Water Quality Monitoring

6.2.1                 In the Reporting Period, a total of fourteen (14) sampling days were scheduled to carry out for all designated locations with their control stations.

 

6.2.2                 The key monitoring parameters including Dissolved Oxygen, Turbidity and Suspended Solids are summarized in Tables 6-1 to 6-4.  Breaches of water quality monitoring criteria are shown in Table 6-5.  Detailed monitoring database including in-situ measurements and laboratory analysis data are shown in Appendix I and the relevant graphical plot are shown in Appendix J.

Table 6-1         Water Quality Monitoring Results Associated Contracts 3

Date

Dissolved Oxygen

(mg/L)

Turbidity

(NTU)

Suspended Solids

(mg/L)

WM4

WM4-CA

WM4-CB

WM4

WM4-CA

WM4-CB

WM4

WM4-CA

WM4-CB

1-Mar-21

6.2

6.2

7.2

4.7

2.1

15.1

7.0

<2

23.5

3-Mar-21

6.1

6.1

7.1

4.9

1.3

19.5

6.0

<2

21.5

5-Mar-21

5.2

6.2

5.5

6.2

5.8

9.9

7.0

<2

11.5

8-Mar-21

5.6

6.2

7.0

6.7

2.8

7.0

7.0

<2

9.0

10-Mar-21

7.2

7.5

9.0

3.1

0.5

6.0

6.0

<2

10.0

12-Mar-21

7.3

7.5

10.3

3.7

0.4

7.5

6.5

<2

14.0

15-Mar-21

7.6

7.5

10.8

2.9

0.5

5.1

5.0

<2

5.5

17-Mar-21

6.6

6.6

6.9

5.2

2.6

14.0

7.0

<2

11.5

19-Mar-21

6.5

6.5

6.9

5.7

2.3

14.5

6.0

<2

17.0

22-Mar-21

7.5

6.0

7.6

3.7

1.4

6.9

3.0

<2

9.0

24-Mar-21

6.3

6.2

7.2

6.8

2.4

7.6

8.0

<2

11.0

26-Mar-21

5.7

6.5

6.8

4.0

2.4

8.5

4.5

<2

10.0

29-Mar-21

7.1

7.4

9.8

10.4

0.4

6.8

24.5

<2

13.0

31-Mar-21

7.1

6.9

9.6

3.6

0.3

7.6

7.5

<2

15.0

 

 

 Table 6-2       Water Quality Monitoring Results Associated Contracts 6

Date

Dissolved Oxygen

(mg/L)

Turbidity

(NTU)

Suspended Solids

(mg/L)

WM1

WM1-C

WM1

WM1-C

WM1

WM1-C

1-Mar-21

10.0

7.6

30.1

15.2

35.5

11.5

3-Mar-21

10.3

7.9

29.3

14.4

27.5

12.0

5-Mar-21

7.5

5.3

11.4

12.4

10.0

9.5

8-Mar-21

4.5

4.6

122.0

132.0

89.0

107.0

10-Mar-21

6.0

4.9

45.9

62.7

58.5

82.0

12-Mar-21

5.9

4.7

49.3

55.0

64.5

66.0

15-Mar-21

6.9

6.2

29.0

47.3

36.5

68.0

17-Mar-21

6.5

4.8

29.2

47.9

25.0

35.0

19-Mar-21

7.3

4.9

29.5

42.5

44.5

60.0

22-Mar-21

6.3

5.3

32.9

63.0

31.5

63.0

24-Mar-21

8.7

5.9

17.5

34.5

13.0

35.0

26-Mar-21

11.0

5.4

18.0

33.0

14.0

31.0

29-Mar-21

12.7

5.6

12.9

33.0

30.5

41.5

31-Mar-21

9.4

5.3

23.3

25.8

36.5

36.0

 

Table 6-3         Water Quality Monitoring Results Associated Contract 6

Date

Dissolved Oxygen

(mg/L)

Turbidity

(NTU)

Suspended Solids

(mg/L)

WM2A(a)

WM2A- Cx

WM2B

WM2B- C

WM2A(a)

WM2A- Cx

WM2B

WM2B- C

WM2A(a)

WM2A- Cx

WM2B

WM2B- C

1-Mar-21

6.6

7.1

*

*

5.8

35.0

*

*

3.5

31.0

*

*

3-Mar-21

6.7

7.1

*

*

5.1

31.1

*

*

2.0

27.0

*

*

5-Mar-21

5.0

5.8

*

*

3.7

87.1

*

*

4.0

44.0

*

*

8-Mar-21

5.1

5.5

*

*

51.7

138.0

*

*

24.5

66.5

*

*

10-Mar-21

4.4

6.9

*

*

13.1

25.8

*

*

10.0

17.0

*

*

12-Mar-21

4.6

6.6

*

*

7.6

10.6

*

*

3.0

4.0

*

*

15-Mar-21

4.4

7.6

*

*

6.2

5.4

*

*

5.0

2.0

*

*

17-Mar-21

4.5

6.1

*

*

7.6

11.7

*

*

7.5

5.5

*

*

19-Mar-21

4.8

7.1

*

*

3.4

74.4

*

*

5.0

130.0

*

*

22-Mar-21

5.6

6.2

*

*

6.0

9.7

*

*

6.0

6.0

*

*

24-Mar-21

4.6

6.6

*

*

4.3

9.2

*

*

4.5

5.5

*

*

26-Mar-21

4.4

5.9

*

*

3.6

6.2

*

*

4.0

3.5

*

*

29-Mar-21

4.5

6.7

*

*

2.0

4.6

*

*

4.0

4.5

*

*

31-Mar-21

5.2

5.8

*

*

3.8

3.7

*

*

9.5

2.0

*

*

Remarks: * water sampling was unable to carry out at WM2B and WM2B-C due to shallow water (water depth under 150mm)

 

Table 6-4         Water Quality Monitoring Results Associated Contracts 6

Date

Dissolved Oxygen

(mg/L)

Turbidity

(NTU)

Suspended Solids

(mg/L)

WM3x

WM3-C

WM3x

WM3-C

WM3x

WM3-C

1-Mar-21

7.8

*

3.4

*

2.5

*

3-Mar-21

7.7

*

2.8

*

3.5

*

5-Mar-21

7.1

*

13.1

*

11.5

*

8-Mar-21

6.8

*

7.2

*

2.5

*

10-Mar-21

8.2

*

2.6

*

3.0

*

12-Mar-21

8.5

*

1.7

*

<2

*

15-Mar-21

8.9

*

1.9

*

<2

*

17-Mar-21

6.2

*

3.7

*

<2

*

19-Mar-21

8.9

*

1.7

*

<2

*

22-Mar-21

6.9

*

3.0

*

<2

*

24-Mar-21

7.1

*

3.8

*

<2

*

26-Mar-21

6.7

*

3.1

*

<2

*

29-Mar-21

9.3

*

1.2

*

<2

*

31-Mar-21

8.8

*

1.2

*

<2

*

Remarks: * water sampling was unable to carry out at WM3-C due to shallow water (water depth under 150mm)

Table 6-5      Action and Limit (A/L) Levels Exceedance Recorded

Location

Dissolved Oxygen

Turbidity

Suspended Solids

Total Exceedance

Project Related exceedance

AL

LL

AL

LL

AL

LL

AL

LL

AL

LL

WM1

0

0

0

0

0

0

0

0

0

0

WM2A(a)

0

0

0

0

0

0

0

0

0

0

WM2B

0

0

0

0

0

0

0

0

0

0

WM3x

0

0

0

0

0

0

0

0

0

0

WM4

0

0

0

0

0

0

0

0

0

0

No of Exceedance

0

0

0

0

0

0

0

0

0

0

 

6.2.3                 In this Reporting Period, no exceedance was recorded for water quality monitoring. No corrective measure was therefore required.


7                    Ecology Monitoring

7.1              Monitoring on Woodland Compensation

7.1.1                 According to the approved Woodland Compensation Plan (WCP), ecological monitoring for woodland compensation shall be conducted at bi-monthly interval for the first year and the monitoring frequency would be reduced to quarterly from the second year.  

 

7.1.2                 As Stage 2 of the enhancement planting work was undertaken in August 2019 has covered all of the 9 monitoring quadrats. The bi-monthly was conducted in the first year after Stage 2 of enhancement planting and the monitoring frequency would be reduce to quarterly from the second year.

 

7.1.3                 The quarterly ecological monitoring for period of December 2020 to February 2021 had carried out on 22 and 23 February 2021 by transects inspection and quadrat monitoring.  The quarterly Ecological Monitoring Report was verified by IEC on 19 March 2021 and it has been submitted as a stand-alone copy to supplement the EM&A Report on 19 March 2021.

 

7.2              Monitoring on Wetland Compensation

7.2.1                 According to the approved Habitat Creation and Management Plan (HCMP), the proposed Wetland Compensation Area (WCA) near the Ping Yeung Interchange adjacent to the section of Ping Yuen River was adopted.  Ecological monitoring at implementation and establishment periods of WCA will be conducted to cover the ecological attributes.  Implementation of the wetland will commence within the construction phase after completion of the construction works at Ping Yeung Section.  Monitoring on the WCA will be conducted in implementation and establishment stages.

 

7.2.2                 Site inspection for the construction of WCA was conducted by ET as part of the weekly inspection of Contract 6 on 3, 12, 19, 25 and 30 March 2021.  It was observed that landscaping was carried out in the WCA.  There was no non-compliance observed during the site inspection.  The forthcoming remaining activities would be landscaping in the WCA.  

 

7.2.3                 As discussed among CEDD, AECOM and Contractor of Contract 6 in the SSEMC in October 2020, establishment stage for the wetland was commenced on 1 October 2020 for one year after completion of construction of the wetland. 

 

7.2.4                 In the Reporting Period, wetland monitoring was conducted on 19&27 March 2021.  The monthly monitoring report for the WCA will be submitted as a stand-alone copy to supplement the EM&A Report after verified by IEC.

 

 

8                    Waste Management

8.1              General Waste Management

8.1.1                 Waste management was carried out in accordance with the Waste Management Plan (WMP) for contract 3 and 6.

 

8.2              Records of Waste Quantities

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

l Construction & Demolition (C&D) Material;

l Chemical Waste;

l General Refuse; and

l Excavated Soil.

 

8.2.2                 The quantities of waste for disposal in this Reporting Period are summarized in Tables 8-1 and 8-2 and the Monthly Summary Waste Flow Table is shown in Appendix L.  Whenever possible, materials were reused on-site as far as practicable.

Table 8-1         Summary of Quantities of Inert C&D Materials for the Project

Type of Waste

Contract 3

Contract 6

Total Qty.

Quantity

Disposal location

Quantity

Disposal location

C&D Materials (Inert)

(in '000m3)

0

--

0.018

--

0.018

Reused in this Contract (Inert)

(in '000 m3)

0

--

0

--

0

Reused in other Contracts/ Projects (Inert)

(in '000 m3)

0

--

0

--

0

Disposal as Public Fill (Inert)

(in '000 m3)

0

--

0.018

Tuen Mun 38

0.018

 

 

Table 8-2        Summary of Quantities of C&D Wastes for the Project

Type of Waste

Contract 3

Contract 6

Total Qty.

Quantity

Disposal location

Quantity

Disposal location

Recycled Metal (‘000kg) #

0

--

0

--

0

Recycled Paper / Cardboard Packing (‘000kg) #

0

--

0

--

0

Recycled Plastic (‘000kg) #

0

--

0

--

0

Chemical Wastes (‘000kg) #

0

--

0

--

0

General Refuses (‘000m3)

0

--

0.009

NENT

0.009

             Remark #: Unit of recycled metal, recycled paper/ cardboard packing and recycled plastic under Contract 3 was in (‘000m3) while the unit of chemical wastes for Contract 3 was in (‘m3).

 

9                    Site Inspection

9.1              requirements

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

 

9.1.2                 Proposal for partial termination of the construction phase EM&A programme for Contract 2, Contract 4, Contract 7 and Contract SS C505 was approved by EPD on 9 July 2020 (EPD’s ref.: ( ) in Ax (3) to EP 2/N7/A/52 Pt.17).  The ET’s site inspection and audit for corresponding Contract 2, 4, 7 and SS C505 were ceased after last site inspection undertaken on 10 July 2020.

 

9.2              Findings / Deficiencies During the Reporting Month

Contract 3

9.2.1                 In the Reporting Period, joint site inspection for Contract 3 to evaluate the site environmental performance has been carried out by the RE, ET, IEC and the Contractor on 3, 12, 19, 25 and 31 March 2021.  No non-compliance was noted.

 

9.2.2                 The findings / deficiencies of Contract 3 that observed during the weekly site inspection are listed in Table 9-1.

Table 9-1           Site Observations for Contract 3

Date

Findings / Deficiencies

Follow-Up Status

3 March 2021

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

12 March 2021

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

19 March 2021

Ÿ  The Contractor should cover the stockpile with impervious sheet to prevent dust impact.

Ÿ  The stockpile was covered with impervious sheet.

25 March 2021

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

31 March 2021

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

 

Contract 6

9.2.3                 In the Reporting Period, joint site inspection for Contract 6 to evaluate the site environmental performance has been carried out by the RE, ET, IEC and the Contractor on 3, 12, 19, 25 and 30 March 2021.  No non-compliance was noted.

 

9.2.4                 The findings / deficiencies of Contract 6 that observed during the weekly site inspection are listed in Table 9-2.

Table 9-2           Site Observations for Contract 6

Date

Findings / Deficiencies

Follow-Up Status

3 March 2021

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

12 March 2021

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

19 March 2021

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

25 March 2021

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

30 March 2021

Ÿ  No adverse environmental issue was observed.

Ÿ  NA

 

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

10                Environmental Complaint and Non-Compliance

10.1          Environmental Complaint, Summons and Prosecutions

10.1.1             In the Reporting Period, no environmental complaint was recorded.

 

10.1.2             No summons and prosecution under the EM&A Programme was lodged for all Contracts.

 

10.1.3             The statistical summary of environmental complaint is presented in Tables 10-1, 10-2 and 10-3.

Table 10-1         Statistical Summary of Environmental Complaints

Reporting Period

Contract No

Environmental Complaint Statistics

Project related complaint

Frequency

Cumulative

Complaint Nature

06 Nov 2013 –

28 February 2021

Contract 3

0

10

Ÿ (3) Dust

Ÿ (3) Water quality

Ÿ (2) Noise

Ÿ (2) site cleanliness (dust & water quality)

(1) site cleanliness (dust & water quality)

16 Aug 2013 –

28 February 2021

Contract 6

0

46

Ÿ (24) Water Quality

Ÿ (12) Dust

Ÿ (3) Noise

Ÿ (1) Nuisance

Ÿ (2) Noise and dust

Ÿ (3) Water quality and dust

Ÿ (1) Water quality and noise

(8) water quality

(3) dust

(1) nuisance

(1) water quality

and dust

(1) water quality

and noise

1 – 31 March 2021

Contract 3

0

10

Ÿ (3) Dust

Ÿ (3) Water quality

Ÿ (2) Noise

Ÿ (2) site cleanliness (dust & water quality)

NA

Contract 6

0

46

Ÿ (24) Water Quality

Ÿ (12) Dust

Ÿ (3) Noise

Ÿ (1) Nuisance

Ÿ (2) Noise and dust

Ÿ (3) Water quality and dust

Ÿ (1) Water quality and noise

NA

 

Table 10-2         Statistical Summary of Environmental Summons

Reporting Period

Contract No

Environmental Summons Statistics

Frequency

Cumulative

Complaint Nature

06 Nov 2013 –

28 February 2021

Contract 3

0

0

NA

16 Aug 2013 –

28 February 2021

Contract 6

0

0

NA

1 – 31 March 2021

Contract 3

0

0

NA

Contract 6

0

0

NA

 

Table 10-3         Statistical Summary of Environmental Prosecutions

Reporting Period

Contract No

Environmental Prosecutions Statistics

Frequency

Cumulative

Complaint Nature

06 Nov 2013 –

28 February 2021

Contract 3

0

0

NA

16 Aug 2013 –

28 February 2021

Contract 6

0

0

NA

1 – 31 March 2021

Contract 3

0

0

NA

Contract 6

0

0

NA

 

11                Implementation Status of Mitigation Measures

11.1          General Requirements

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

 

Implementation of Mitigation Measures during Construction Phase

 

11.1.2             All contracts under the Project shall be implementing the required environmental mitigation measures according to the approved EM&A Manual as subject to the site condition.  Environmental mitigation measures generally implemented by Contracts 3 and 6 in this Reporting Period are summarized in Table 11-1. 

 

Table 11-1         Environmental Mitigation Measures

Issues

Environmental Mitigation Measures

Water Quality

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

Air Quality

·       Maintain damp / wet surface on access road

·       Low vehicular speed within the works areas.

·       All vehicles must use wheel washing facility before off site

·       Sprayed water during breaking works

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

Noise

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

·       Keep good maintenance of plants

·       Place noisy plants away from residence or school

·       Provide noise barriers or hoarding to enclose the noisy plants or works

·       Shut down the plants when not in used.

Waste and Chemical Management

·       On-site sorting prior to disposal

·       Follow requirements and procedures of the “Trip-ticket System”

·       Predict required quantity of concrete accurately

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

General

·       The site was generally kept tidy and clean.

 

Implementation of Mitigation Measures during Operation Phase

 

11.1.3             The Heung Yuen Wai (HYW) Highway and connecting roads under the Project was opened on 26 May 2019. Since partial commencement of operation is the same as the commencement of operation for the entire project from EIAO perspective.  All relevant requirements as stipulated in the EP and the approved EIA report (including the EM&A Manual) for the commencement of operation of the Project shall be strictly complied with.

 

11.1.4             In general, the recommended mitigation measures for operation stage of HYW Highway and connecting roads under the Project have been implemented.  The implementation status of mitigation measures for operation phase in the Reporting Period are summarized in Appendix N. 

 

11.1.5             For more details about the implementation status of mitigation measures for operation phase with photo illustration, an Environmental Monitoring and Audit report on the implementation of the mitigation measures for operation stage of the Project will be disposed to EPD not later than three months after the commencement of operation of the Project under EP-404/2011/D condition 5.5. The abovementioned report was submitted to EPD on 23 August 2019.

 

11.1.6             As BCP was partially opened on 26 August 2020, a supplement operation phase EM&A report covering the operation of the BCP will be submitted to EPD in accordance with the EP-404/2011/D condition 5.5 separately.

 

11.1.7             Pursuant to EM&A Manual Section 10.2, the implementation of landscape mitigation measures during establishment period shall be audited by a qualified landscape architect.  Site inspection for establishment period was commenced in August 2019 and competed in July 2020 respectively.  The relevant checklists were included in the corresponding EM&A Reports.

 

11.2          Tentative Construction Activities in the Coming Month

11.2.1             The construction works under Contract 2, 4, 5 7 and SS C505 was substantially completed. Construction activities for other Contracts in the coming month are listed below:

Contract 3

Ÿ   Laying of rising mains

Contract 6

Ÿ   Water Pipe Connection Work

Ÿ   Landscaping

Ÿ   Landscaping works for the proposed Wetland

 

11.3          Key Issues for the Coming Month

11.3.1             Key issues to be considered in the coming month for Contracts 3 and 6 include:

Ÿ   Implementation of control measures for rainstorm;

Ÿ   Regular clearance of stagnant water during wet season;

Ÿ   Implementation of dust suppression measures at all times;

Ÿ   Potential wastewater quality impact due to surface runoff;

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

Ÿ   Disposal of empty engine oil containers within site area;

Ÿ   Ensure dust suppression measures are implemented properly;

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

Ÿ   Management of chemical wastes;

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

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

Ÿ   Implementation of construction noise preventative control measures

 

11.3.2             The Heung Yuen Wai (HYW) Highway and connecting roads under the Project was opened on 26 May 2019 and the BCP was partially opened on 26 August 2020.  All relevant requirements as stipulated in the EP and the approved EIA report (including the EM&A Manual) for the commencement of operation of the Project shall be strictly complied with. 

 

11.3.3             The contractors should pay special attention on water quality mitigation measures and fully implement according to the ISEMM of the EM&A Manual, in particular to prevent muddy water or other water pollutants from site surface overflow to public area should be properly maintained.  The statuses of implemented water quality mitigation measures for the project are shown in Appendix O.

 

12                Conclusions and Recommendations

12.1          Conclusions

12.1.1             This is the 92nd monthly EM&A report presenting the monitoring results and inspection findings for the Reporting Period from 1 to 31 March 2021.

 

12.1.2             For air quality monitoring, no 1-hour TSP and 24-hour TSP monitoring results triggered the Action /Limit Level was recorded in the Reporting Period.

 

12.1.3             In the Reporting Period, no construction noise measurement results that exceeded the Limit Level were recorded.  Moreover, no valid noise complaint (which triggered an Action Level) exceedance was recorded.

 

12.1.4             In the Reporting Period, no exceedance was recorded for water quality monitoring.

 

12.1.5             As the major construction work under Contract 3 and Contract 6 were substantially completed. In view of insignificant environmental impacts of the remaining outstanding construction works of Contracts 3 and 6, the revised “proposal for termination of the Construction Phase Environmental Monitoring & Audit Programme for the remaining Contract 3 and Contract 6 of the Project” which certified by ETL and verified by IEC, was submitted to EPD on 5 February 2021. Revised termination proposal for Contract 3 was submitted to EPD on 9 April 2021 and revised termination proposal for Contract 6 was still under revised by ETL.

 

12.1.6             Site inspection for the construction of WCA was conducted by ET as part of the weekly inspection of Contract 6 on 3, 12, 19, 25 and 30 March 2021.  It was observed that landscaping was carried out in the WCA.  There was no non-compliance observed during the site inspection.  The forthcoming remaining activities would be landscaping in the WCA.  

 

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

 

12.1.8             In this Reporting Period, no environmental complaints was received.  Moreover, no summons and prosecution under the EM&A Programme was lodged in the Reporting Period.

 

12.2          Recommendations

12.2.1             As wet season approaching, preventive measures for muddy water or other water pollutants from site surface flow to local stream such as Kong Yiu Channel, Ma Wat Channel, Ping Yuen River, Kwan Tei River or public area should be properly maintained.  The Contractors should paid special attention on water quality mitigation measures and fully implement according ISEMM of the EM&A Manual.

 

12.2.2             In addition, all effluent discharge shall be ensure to fulfill Technical Memorandum of Effluent Discharged into Drainage and Sewerage Systems, inland and Coastal Waters criteria or discharge permits stipulation.

 

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

 

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