Job No.: TCS00874/16

 

 

 

 

 

 

 

 

 

CEDD Contract No. CV/2012/05

Development of a Bathing Beach at Lung Mei, Tai Po

 

 

 

 

 

 

 

 

 

14th Quarterly Environmental Monitoring and Audit Summary Report (March 2021 – May 2021)

 

 

 

 

 

 

 

 

 

 

Prepared For

 

 

 

 

Welcome Construction CO., Ltd

 

 

 

 

 

 

 

 

 

 

Date

Reference No.

Prepared By

Certified By

29 June 2021

TCS00874/16/600/R0760v2

 

Nicola Hon

(Environmental Consultant)

T.W. Tam

(Environmental Team Leader)

 

 

Version

Date

Remarks

1

28 June 2021

First Submission

2

29 June 2021

Amended according to the IEC’s comments

 

 

 

 


 

 

 

 

 

 

 

executive summary

ES.01     Civil Engineering and Development Department (hereafter referred as “CEDD”) is the Project Proponent and the Permit Holder of Agreement No. CE 59/2005 (EP) Development of a Bathing Beach at Lung Mei, Tai Po (hereinafter referred as “the Project”), which is a Designated Project to be implemented under Environmental Permit number EP-388/2010 (hereinafter referred as “the EP-388/2010” or “the EP”).

 

ES.02     Action-United Environmental Services & Consulting (hereinafter referred as “AUES”) has been commissioned as the Environmental Team for the Project (hereinafter referred as “the ET”) to perform relevant Environmental Monitoring and Audit (EM&A) programme, including baseline and impact environmental monitoring in accordance with the EM&A Manual approved under the Environmental Impact Assessment Ordinance (EIAO).

 

ES.03     According to the Approved EM&A Manual [November 2007] (hereinafter referred as ‘the EM&A Manual’), air quality, construction noise and water quality monitoring should be required to be monitored for baseline and during the construction phase of the Project.  In January 2018, an updated EM&A Manual (AUES Ref.: TCS00874/16/300/L0085 dated 11 January 2018) was prepared to update of noise and air sensitive receivers and recent site condition for the EM&A programme and it was submitted and approved by EPD in January 2018.

 

ES.04     This is the 14th Quarterly EM&A report summarizing the monitoring results and inspection findings for the reporting period from 1st March 2021 to 31st May 2021 (hereinafter ‘the Reporting Period).  

 

Environmental Monitoring and Audit Activities

ES.05     In view of substantial completion of work and in consideration of the scale and nature of remaining works, it is considered that the potential environmental impacts associated with the remaining works for Project are negligible.   A proposal for suspension of air quality and noise monitoring was submitted to EPD on 28 April 2021 and the Proposal was approved by EPD on 17 May 2021.

 

ES.06     Upon approval by EPD, the air quality and noise monitoring under the Project was suspended on 17 May 2021.  Environmental monitoring activities under the EM&A program in the Reporting Period are summarized in the following table.

Issues

Environmental Monitoring Parameters / Inspection

Sessions Note 1

Air Quality

1-hour TSP

14

24-hour TSP

10 (#)

Construction Noise

LAeq(30min) Daytime

11

Inspection / Audit

ET Regular Bi-weekly Environmental Site Inspection

6

IEC Monthly Environmental Site Audit

3

Note: 1.) Total sessions are counted by monitoring days.

Remark: (#) There were 15 sessions of 24-hour TSP monitoring scheduled in the Reporting Period, however, 5 session at A7 and 10 sessions of A4 were failed due to the power issue.

 

Breach of Action and Limit (A/L) Levels

ES.07     No exceedance of air quality and construction noise monitoring were recorded in this Reporting Period.  The statistics of environmental exceedance, NOE issued and investigation of exceedance are summarized in the following table.

Environmental Issues

Monitoring Parameters

Exceedance

Event & Action

Action Level

Limit Level

Investigation

Corrective Actions

Air Quality

1-hour TSP

0

0

-

-

24-hour TSP

0

0

-

-

Construction Noise

LAeq(30min)

0

0

-

-

 

Notification of Environmental Complaint, Summons and Successful Prosecutions

ES.08     No environmental complaint, summons or successful prosecutions were received and recorded in this Reporting Period. 

 

Reporting Change

ES.09     No reporting change was made in this Reporting Period.

 

Future Key Issues

ES.10     In view of substantial completion of work and in consideration of the scale and nature of remaining works, it is considered that the potential environmental impacts associated with the remaining works for Project are negligible.  A proposal for suspension of air quality and noise monitoring was submitted to EPD on 28 April 2021 and the Proposal was approved by EPD on 17 May 2021.

 

ES.11     The remaining activities in May 2021 are E&M Works (installation of CCTV, Public announcement, fan, lighting system etc. at two lookout towers) and landscaping. The potential environmental impacts associated with the remaining works for Project are considered negligible.  However, the Contractor should provide dust and noise mitigation measures as applicable, in accordance with the EM&A requirement during the remaining construction phase.

 

 


Table of Contents

1.    Introduction   1

1.1            Project Background   1

1.2            Report Structure  2

2.    Project Organization and Construction Progress  3

2.1            Project Organization and Management Structure  3

2.2            Construction Progress  3

2.3            Summary of Environmental Submissions  3

3.    Summary of Impact Monitoring Requirements  5

3.1            General  5

3.2            Monitoring Parameters  5

3.3            Monitoring Locations  5

3.4            Monitoring Frequency and Period   6

3.5            Monitoring Instrument  6

3.6            Monitoring Procedures  7

3.7            Meteorological Information   9

3.8            Determination of Action/Limit (A/L) Levels  9

3.9            Data Management and Data QA/QC Control  10

4.    Air Quality Monitoring   11

4.1            General  11

4.2            Results of Air Quality Monitoring   11

5.    Construction Noise Monitoring   13

5.1            General  13

5.2            Results of Noise Monitoring   13

6.    Water Quality Monitoring   14

6.1            General  14

7.    Waste Management   15

7.1            General  15

7.2            Records of Waste Quantities  15

8.    Ecology   16

8.1            Ecology Monitoring (marine-based) 16

9.    Site Inspection   19

9.1            Requirements  19

9.2            Findings / Deficiencies During the Reporting Month   19

10.  Environmental Complaint and Non-Compliance   20

10.1          Environmental Complaint, Summons and Prosecution   20

10.2          Complaint Investigation   20

11.  Implementation Status of Mitigation Measures  21

11.1          General  21

11.2          Impact Forecast  21

12.  Conclusions and Recommentations  22

12.1          Conclusions  22

12.2          Recommendations  22

 


List of TABLES

Table 2-1        Major Construction Activities of the Works during the Reporting Period

Table 2-1        Status of Environmental Licenses and Permits

Table 2-2        Submission Status as under the EP Stipulation

Table 3-1        Summary of EM&A Impact Monitoring Requirements

Table 3-2        Location of Air Quality Monitoring

Table 3-3        Designated Noise Monitoring Station according to the EM&A Manual

Table 3-4        Noise Monitoring Stations of the EM&A Programme

Table 3-5        Air Quality Monitoring Equipment

Table 3-6        Construction Noise Monitoring Equipment

Table 3-7        Action and Limit Levels for Air Quality

Table 3-8        Action and Limit Levels for Construction Noise, dB(A)

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

Table 4-2        Summaries of Breaches of Air Quality A/L Levels

Table 5-1        Summary of Construction Noise Monitoring Results

Table 5-2        Summaries of Breaches of Construction Noise A/L Levels

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

Table 7-2        Summary of Quantities of C&D Wastes

Table 8-1        Summary of Submission for Seahorse Monitoring

Table 8-2        Summary of Submission for Marine Ecological Monitoring

Table 9-1        Summary of Site Observations

Table 10-1       Statistical Summary of Environmental Complaints

Table 10-2       Statistical Summary of Environmental Summons

Table 10-3       Statistical Summary of Environmental Prosecution

Table 11-1       Environmental Mitigation Measures in the Reporting Month

 

List of Appendices

Appendix A    Layout Plan of the Project

Appendix B     Organization structure and contact details

Appendix C    Monitoring Location

Appendix D    Event and Action Plan

Appendix E    Database of Monitoring Results

Appendix F    Graphical plots of Monitoring Results

Appendix G    Weather Information

Appendix H    Waste Flow Table

Appendix I     Implementation Schedule of Environmental Mitigation Measures

 

 

 


1.                           Introduction

1.1                       Project Background

1.1.1                 Civil Engineering and Development Department (hereafter referred as “CEDD”) is the Project Proponent and the Permit Holder of Agreement No. CE 59/2005 (EP) Development of a Bathing Beach at Lung Mei, Tai Po (hereinafter referred as “the Project”), which is a Designated Project to be implemented under Environmental Permit number EP-388/2010 (hereinafter referred as “the EP-388/2010” or “the EP”). 

 

1.1.2                 The major construction activities of the Project comprise construction of 200-metre long bathing beach with a groyne at each end, a shark prevention net; a public car park; retaining walls; and the associated roadworks, drainage and sewerage works.  Layout plan of the Project is shown in Appendix A.  Designated works of the Project under the EP shall include:

(i)            Construction of a 200m long beach with a groyne at each end of the beach which includes dredging and sandfilling works;

(ii)          Construction of one culvert at the eastern side of the beach and another small section of culvert and open drainage channel with gabion embankments at the western end, both to collect and divert surface runoff from upstream locations; and

(iii)        Construction of a beach building with associated beach building facilities, kiosk and a carpark and associated road improvement works adjoining the facility.

 

1.1.3                 CEDD is Site Resident Engineers (hereinafter referred as “SRE”) responsible for the Project management; Welcome Construction CO., Ltd is a Main Contractor (hereinafter referred as “the Main Contractor”) responsible to construction of the Project Works; and Action-United Environmental Services & Consulting (hereinafter referred as “AUES”) has been commissioned as an Independent Environmental Team (hereinafter referred as “the ET”) to implement the relevant EM&A program in accordance with the approved EM&A Manual, as well as the associated duties.  Moreover, Environmental Resources Management is Independent Environmental Checker (hereinafter referred as “IEC”) of the Project.

 

1.1.4                 As part of the EM&A program, baseline monitoring to determine the ambient environmental conditions including air quality, noise and water quality were undertaken between 7 June 2017 and 21 October 2017.  After completed baseline monitoring, Baseline Monitoring Report for Air Quality and Noise (AUES Ref.: TCS00874/16/600/R0022v3) and Baseline Monitoring Report for Water Quality (AUES Ref.: TCS00874/16/600/R0036v2) has been verified by IEC and submitted to EPD for endorsement.  These baseline monitoring reports has summarized the key findings of baseline condition and determined a set of Action and Limit Levels (A/L Levels) based on the baseline data.  The A/L Levels will serve as the yardsticks for assessing the acceptability of the environmental impact during construction phase of the Project Works impact monitoring.

 

1.1.5                 The construction phase of the Project commenced on 1st December 2017. Accordingly, the impact monitoring of the EM&A programme commenced on the same date.

 

1.1.6                 As advised by the Contractor and confirmed by CEDD, all marine dredging was completed in late October 2019 and all sand laying underwater has been substantially completed in late August 2020.  It is confirmed that no further filling operation in the site after sub-tidal profile survey check conducted on 31 August 2020 and CEDD have no adverse comment on it.  The standing type silt curtain installed as per Figure 3 of the Environmental Permit No. EP-388/2010 was removed and the shark prevention net was installed on 17 September 2020.  In view of completion of all the marine activities including dredging and sand laying underwater, the impact marine water quality monitoring for the Project was terminated on 31 August 2020 according to the updated EM&A Manual Section 5.1.5.  The notification of termination of impact marine water quality monitoring was issued to CEDD, IEC and EPD without adverse comment received. 

 

1.1.7                 In view of substantial completion of work and in consideration of the scale and nature of remaining works, it is considered that the potential environmental impacts associated with the remaining works for Project are negligible.   A proposal for suspension of air quality and noise monitoring was submitted to EPD on 28 April 2021 and the Proposal was approved by EPD on 17 May 2021.

 

1.1.8                 This is the 14th Quarterly EM&A report presenting the monitoring results and inspection findings for the reporting period from 1st March 2021 to 31st May 2021.

 

1.2                       Report Structure

1.2.1                 The Quarterly EM&A Report is structured into the following sections:-

Section 1         Introduction

Section 2         Project Organization and Construction progress

Section 3         Summary of Impact Monitoring Requirements

Section 4         Air Quality Monitoring

Section 5         Construction Noise Monitoring

Section 6         Water Quality Monitoring

Section 7         Waste Management

Section 8         Ecology

Section 9         Site Inspection

Section 10       Environmental Complaint and non-compliance

Section 11       Implementation Status of Mitigation Measures

Section 12       Conclusion and Recommendation

 

 

 


2.                           Project Organization and Construction Progress

2.1                       Project Organization and Management Structure

2.1.1                 Organization structure and contact details of relevant parties with respect to on-site environmental management are shown in Appendix B.

 

2.2                       Construction Progress

2.2.1                 The major construction activities undertaken in the Reporting Period are listed below:-

Table 2-1    Major Construction Activities of the Works during the Reporting Period

Month

Major Construction Activities

March 2021

·            E&M works;

·            Landscaping;

·            Lookout tower finishing works; and

·            Speed enforcement camera

April 2021

·            E&M works (installation of CCTV, public announcement, fan and lighting system etc.);

·            Landscaping;

·            Lookout tower finishing works; and

·            Speed enforcement camera

May 2021

·            E&M works (installation of CCTV, public announcement, fan and lighting system etc.); and

·            Landscaping

 

2.3                       Summary of Environmental Submissions

2.3.1                 Summary of currently relevant permits, licenses, and/or notifications on environmental protection for this Project in this Reporting Period is presented in Table 2-1.

Table 2-1    Status of Environmental Licenses and Permits

Item

Description

License/Permit Status

Permit no./Account no./ Ref. no.

From

To

1

Air pollution Control (Construction Dust) Regulation

Ref. Number: 418137

N/A

N/A

2

Chemical Waste Producer Registration

Waste Producers Number (WPN): PN5213-728-W3437-01

21 August 2017

End of Project

3

Water Pollution Control Ordinance

License No.: WT00028905-2017

24 October 2017

31 October 2022

4

Waste Disposal (Charges for Disposal of Construction Waste) Regulation

Billing Account for Disposal of Construction Waste: Account No. 7017686

3 July 2013

End of Project

 

2.3.2                 The submission status as under the EP requirement is presented in Table 2-2.

Table 2-2    Submission Status as under the EP Stipulation

Item

EP condition

Description

Status

1

2.3

Management Organization of the Main Construction Companies

The updated version was submitted in May 2018

2

2.4

Report for Capture and Relocation of Common Rat Snake

Approved by EPD on 15 Sep 2017 (EPD ref.: (15) in EP2/N5/C/46 Pt.6 dated 15 Sep 2017)

3

2.5

Landscape Plan

Re-submitted to EPD on 12 April 2021

4

3.12

Mangrove Seedling Planting Proposal

Approved by EPD on 22 April 2021 (EPD ref.: () in EP2/N5/C/46 Pt.9 dated 22 April 2021)

5

3.13

Detailed Landscape As-built Drawing(s)

Re-submitted to EPD on 7 May 2021

6

4.3

Baseline Monitoring Report for Air Quality and Noise (AUES Ref.: TCS00874/16/600/R0022v3)

Approved by EPD on 8 Jan 2018 (EPD ref.: (36) in EP2/N5/C/46 Pt.6 dated 8 Jan 2018)

7

Baseline Monitoring Report for Water Quality(AUES Ref.: TCS00874/16/600/R0036v2)

Approved by EPD on 10 Jan 2018 (EPD ref.: (37) in EP2/N5/C/46 Pt.6 dated 10 Jan 2018)

 


3.                           Summary of Impact Monitoring Requirements

3.1                       General

3.1.1                 The EM&A requirements are set out in the EM&A manual and environmental issues such as air quality, construction noise and water quality were identified as the key issues during the construction phase of the Project.  In view of completion of all the marine activities, the impact marine water quality monitoring for the Project was terminated on 31 August 2020 according to the updated EM&A Manual Section 5.1.5.  A summary of the EM&A requirements for air quality and noise monitoring are presented in the sub-sections below.

 

3.2                       Monitoring Parameters

3.2.1                 According to the Project EM&A Manual, the impact monitoring program covers the following environmental issues:

Ÿ   Air Quality;

Ÿ   Construction Noise

 

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

Table 3-1         Summary of EM&A Impact Monitoring Requirements

Environmental Issue

Parameters

Air Quality

Ÿ  1-hour TSP

Ÿ  24-hour TSP

Noise

Ÿ  Leq (30min) in six consecutive Leq(5 min) between 07:00-19:00 on normal weekdays

 

3.3                       Monitoring Locations

Air Quality

3.3.1                 There are air quality monitoring locations (A4 and A6) recommended in Section 3.1 of the EM&A Manual.  During liaison with the landlord of A6, he refused to provide access and location for installation of High Volume Air Sampler (HVAS).  Therefore, alternative location (A7) was proposed by ET in accordance with Section 3.4 of the EM&A Manual.  The proposed alternative locations are considered capable of effectively representing the baseline conditions at the impact monitoring locations.  The proposal (ref no.: TCS00874/16/300/L0016b) for alternative monitoring locations was verified by IEC and it has been submitted to EPD for approval on 8 May 2017.   The air quality monitoring locations are in Table 3-2 and illustrated in Appendix C.

Table 3-2        Location of Air Quality Monitoring

Station ID

Location

A4

No. 101 Lung Mei Tsuen

A7

Hong Kong Eco-Farm

 

Construction Noise

3.3.2                 According to Section 4.1 of the EM&A Manual, four designated noise sensitive receivers (N1, N2, N3 and N4) were recommended and they are listed in Table 3-3.

Table 3-3        Designated Noise Monitoring Station according to the EM&A Manual

NSR

Location

N1

Village house - No. 165A Lung Mei

N2*

Village house - No. 103 Lung Mei

N3

Village house - No. 70 Lo Tsz Tin

N4

Village house - No. 79 Lo Tsz Tin

Remarks: (*)           Noise monitoring should be conducted at N2a (i.e House No. 101 Lung Mei) if it is changed to residential use during construction phase.

 

3.3.3                 As confirmed on the first day of baseline monitoring, N2a (House no. 101 Lung Mei) has been changed to residential use.  Therefore, the noise monitoring is conducted at N2a and to replace N2.  Moreover, due to the lack of accessibility of noise monitoring at NSR N3 (Village house – No. 70 Lo Tsz Tin), alternative location was proposed to replace N3 to carry out the noise monitoring.  Having reviewed the surrounding condition, NSR N3a (Village house – No. 66C Lo Tsz Tin) was proposed with the rationales summarized in below.

1)         The distance between N3 and N3a is about 18 meter apart and N3a locates at close proximity of the project site and major site activities which are likely to have noise impacts;

2)         N3a is a village type residential house and it is a noise sensitive receiver (NSR);

3)         Accessibility for noise monitoring work at N3a is available; and

4)         Minimal disturbance would be only caused to the proposed monitoring location N3a.

 

3.3.4                 The proposal (ref no.: TCS00874/16/300/L0016b) for alternative monitoring locations was verified by IEC and it has been submitted to EPD for approval on 8 May 2017.  The noise monitoring stations under the EM&A programme are listed in Table 3-4 and illustrated in Appendix C.

Table 3-4        Noise Monitoring Stations of the EM&A Programme

Station ID

Address

N1

Village house No. 165A of Lung Mei

N2a

Village house No. 101 of Lung Mei

N3a

Village house No. 66C of Lo Tsz Tin

N4

Village house No. 79 of Lo Tsz Tin

 

 

3.4                       Monitoring Frequency and Period

3.4.1                 The frequency and the duration for impact monitoring are summarized below.

Air Quality Monitoring

Ÿ  Parameters:

1-hour TSP and 24-hour TSP

Ÿ  Frequency:

3 times every six days for 1-hour TSP and once every 6 days for 24-hour TSP

Ÿ  Duration:

Throughout the construction period

 

Noise Monitoring

Ÿ  Parameters:

LAeq(30min) and statistical results L10 & L90

Ÿ  Frequency:

Leq (30min) in 6 consecutive Leq(5min) for once a week during 07:00-19:00 on normal weekdays

Ÿ  Duration:

Throughout the construction period

 

3.5                       Monitoring Instrument

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 prove that the instrument is capable of achieving a comparable results to the HVS.  The instrument should be calibrated regularly, and the 1-hour sampling shall be determined on yearly basis by the HVS to check the validity and accuracy of the results measured by direct reading method. The filter paper of 24-hour TSP measurement shall be determined by HOKLAS accredited laboratory.

 

3.5.2                 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-Hour TSP

High Volume Air Sampler

TISCH High Volume Air Sampler, HVS Model TE-5170

Calibration Kit

TISCH Calibration Kit Mode TE-5025A

1-Hour TSP

Portable Dust Meter

Sibata LD-3B Laser Dust Meter

 

Noise Monitoring

3.5.3                 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 ms-1 for reference.

 

3.5.4                 Monitoring equipment to be used for construction noise measurement is listed in Table 3-6.

Table 3-6         Construction Noise Monitoring Equipment

Equipment

Model

Integrating Sound Level Meter

Rion NL-52

Acoustic Calibrator

Rion NC-73 / Rion NC-74 / Rion NC-75

Portable Wind Speed Indicator (#)

Anemometer AZ Instrument 8908

(#) Wind speed is reference data only and there is no calibration certificate for portable wind speed indicator.

 

 

3.6                       Monitoring Procedures

Air Quality

1-hour TSP

3.6.1                 Operation of the 1-hour TSP meter will follow manufacturer’s Operation and Service Manual.

 

3.6.2                 The 1-hour TSP monitor, brand named Sibata LD-3B Laser Dust Meter” is a portable, battery-operated laser photometer. The 1-hour TSP meter provides a real time 1-hour TSP measurement based on 900 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.

 

3.6.3                 The 1-hour TSP meter to be used will be within the valid period, calibrated by the manufacturer prior to purchasing. Zero response of the instrument will 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.

 

24-hour TSP

3.6.4                 The equipment used for 24-hour TSP measurement is the High Volume Sampler (hereinafter the “HVS”) brand named TISCH, Model TE-5170 TSP High Volume Air Sampler, which complied with EPA Code of Federal Regulation, Appendix B to Part 50. The 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

 

3.6.5                 For HVS for 24-hour TSP monitoring, the HVS is mounted in a metallic cage with a top for protection and also it is sat on the existing ground or the roof of building.  The flow rate of the HVS between 0.6m3/min and 1.7m3/min will be properly set in accordance with the manufacturer’s instruction to within the range recommended in EPA Code of Federal Regulation, Appendix B to Part 50.  Glass Fiber Filter 8" x 10" of TE-653 will be used for 24-Hour TSP monitoring and would be supplied by laboratory.  The general procedures of sampling are described as below:-

Ÿ   A horizontal platform with appropriate support to secure the samples against gusty wind should be provided;

Ÿ   No two samplers should be placed less than 2 meters apart;

Ÿ   The distance between the sampler and an obstacle, such as building, must be at least twice the height that the obstacle protrudes above the sample;

Ÿ   A minimum of 2 meters of separation from any supporting structure, measured horizontally is required;

Ÿ   Before placing any filter media at the HVS, the power supply will be checked to ensure the sampler work properly;

Ÿ   The filter paper will be set to align on the screen of HVS to ensure that the gasket formed an air tight seal on the outer edges of the filter.  Then filter holder frame will be tightened to the filter hold with swing bolts.  The holding pressure should be sufficient to avoid air leakage at the edge.

Ÿ   The mechanical timer will be set for a sampling period of 24 hours (00:00 mid-night to 00:00 mid-night next day).  Information will be recorded on the field data sheet, which would be included the sampling data, starting time, the weather condition at current and the filter paper ID with the initial weight;

Ÿ   After sampling, the filter paper will be collected and transfer from the filter holder of the HVS to a sealed envelope and sent to a local HOKLAS accredited laboratory for quantifying.

 

3.6.6                 All the sampled 24-hour TSP filters will be collected and put into the filter envelope provided by the laboratory.  The sample will be kept in normal air conditioned room conditions, i.e. 70% HR (Relative Humidity) and 25oC and delivery to the office within 48 hours and sent to laboratory for analysis.  The sampled filter will be kept in the laboratory for six months prior to disposal.

 

3.6.7                 The HVS used for 24-hour TSP monitoring will be calibrated before the commencement for sampling, and after in two months interval for 1 point checking of maintenance and six months interval for five points calibrate in accordance with the manufacturer’s instruction using the NIST-certified standard calibrator (TISCH Calibration Kit Model TE-5025A) to establish a relationship between the follow recorder meter reading in cfm (cubic feet per minute) and the standard flow rate, Qstd, in m3/min.  Motor brushes of HVS will be regularly replaced of about five hundred hours per time.

 

Construction Noise

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

 

3.6.9                 All noise measurements will be performed with the meter set to FAST response and on the A-weighted equivalent continuous sound pressure level (Leq).  Leq(30 min) in six consecutive Leq(5 min) measurements will be used as the monitoring parameter for the time period between 07:00-19:00 hours on weekdays.

 

3.6.10             The sound level meter will be mounted on a tripod at a height of 1.2 m and placed at the assessment point and oriented such that the microphone is pointed to the site with the microphone facing perpendicular to the line of sight. The windshield will be fitted for all measurements. Where a measurement is to be carried out at a building, the assessment point would normally be at a position 1 m from the exterior of the building façade. Where a measurement is to be made for noise being received at a place other than a building, the assessment point would be at a position 1.2 m above the ground in a free-field situation, i.e. at least 3.5 m away from reflective surfaces such as adjacent buildings or walls.

 

3.6.11             Immediately prior to and following each noise measurement the accuracy of the sound level meter will be checked using an acoustic calibrator generating a known sound pressure level at a known frequency.  Measurements will be accepted as valid only if the calibration level from before and after the noise measurement agrees to within 1.0 dB.

 

3.6.12             Noise measurements will not be made in fog, rain, wind with a steady speed exceeding 5m/s or wind with gusts exceeding 10m/s. The wind speed will be checked with a portable wind speed meter capable of measuring the wind speed in m/s.

 

3.6.13             Valid calibration certificates of monitoring equipment of air quality and construction noise are shown in respectively monthly EM&A Reports.

 

3.7                       Meteorological Information

3.7.1                 The meteorological information including wind direction, wind speed, humidity, rainfall, air pressure and temperature etc. during impact monitoring is extracted from the closest Hong Kong Observatory Station.  To obtain the most appropriate meteorological information where available, Air Temperature/Pressure and Relative Humidity will be extracted from Tai Po Station and wind speed and direction will be extracted from Tai Mei Tuk Station.

 

3.8                       Determination 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.  A summary of the Action/Limit (A/L) Levels for air quality, construction noise and water quality are shown in Table 3-7 and 3-8 respectively.

Table 3-7        Action and Limit Levels for Air Quality

Monitoring Station

Action Level (mg /m3)

Limit Level (mg/m3)

1-hour TSP

24-hour TSP

1-hour TSP

24-hour TSP

A4

275

142

500

260

A7

274

141

500

260

 

Table 3-8         Action and Limit Levels for Construction Noise, dB(A)

Time Period: 0700-1900 hours on normal weekdays

Monitoring

Location

Action Level

Limit Level Note 1 & Note 2

N1, N2a, N3a, and N4

When one documented complaint is received

75

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.

 

Event Action Plan

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 D.

 

3.9                       Data Management and Data QA/QC Control

3.9.1                 The impact monitoring data were handled by the ET’s in-house data recording and management system.

 

3.9.2                 The monitoring data recorded in the equipment were downloaded directly from the equipment at the end of each monitoring day.  The downloaded monitoring data were input into a computerized database properly maintained by the ET.  The laboratory results were input directly into the computerized database and checked by personnel other than those who input the data.

 

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

 

 

 


4.                           Air Quality Monitoring

4.1                       General

4.1.1                 In the Reporting Period, air quality monitoring was performed at the proposed monitoring locations A4 and A7.

 

4.2                       Results of Air Quality Monitoring

4.2.1                 There were 15 sessions of 24-hour TSP monitoring scheduled in the Reporting Period.  However, power supply for HVS at Location A4 was disconnected by the Contractor since 30 March 2021, thus 10 sessions of 24-hour TSP at A4 were unable to carry out in the Reporting Period.   Besides, power supply for HVS at Location A7 was disconnected by the Contractor on 30 March 2021 and reconnected on 9 April 2021, and interrupted again on 5 May 2021.  The incident of 24-hour TSP monitoring are summarized in below table.

Scheduled Monitoring Date

Status of 24-hr TSP Monitoring

A4

A7

30-Mar-21

Power failure

Power failure

1 Apr 2021

Power failure

Power failure

7 Apr 2021

Power failure

Make-up sample was conducted on 9 Apr 2021

13 Apr 2021

Power failure

On Schedule

19 Apr 2021

Power failure

On Schedule

24 Apr 2021

Power failure

On Schedule

29 Apr 2021

Power failure

On Schedule

5 May 2021

Power failure

Power failure

11 May 2021

Power failure

Power failure

17 May 2021

Power failure

Power failure

 

4.2.2                 Summary of air quality monitoring results during the Reporting Period are tabulated in Table 4-1.  The database of monitoring result throughout the Reporting Period is shown in Appendix E and the relevant graphical plots are shown in Appendix F. 

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

Monitoring Location

1-hour TSP (µg/m3)

24-hour TSP (µg/m3)

Max

Min

Mean

Max

Min

Mean

A4

93

54

71

56

12

30

Record Date

9-Mar-21

26-Apr-21

14 sessions

6-Mar-21

18-Mar-21

5 sessions

A7

93

61

72

137

16

53

Record Date

9-Mar-21

26-Apr-21

14 sessions

24-Apr-21

19-Apr-21

10 sessions

Remark: There were 15 sessions of 24-hour TSP monitoring scheduled in the Reporting Period, however, 5 session at A7 and 10 sessions of A4 were failed due to the power issue.

 

4.2.3                 Breaches of air quality A/L levels and statistical analysis of compliance for the air quality monitoring results are summarized in Table 4-2.

Table 4-2         Summaries of Breaches of Air Quality A/L Levels

Location

Exceedance

1-hour TSP

24- hour TSP

Total

A4

Action Level

0

0

0

Limit Level

0

0

0

A7

Action Level

0

0

0

Limit Level

0

0

0

 

4.2.4                 As shown in Tables 4-1 to 4-2, 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.

 

4.2.5                 The summary of weather conditions during the Reporting Period is presented in Appendix G.

 

4.2.6                 Some of the 24-hour TSP monitoring data of Location A4 and A7 were absent in the Reporting Period due to power issue.  Although the some events of 24-hour TSP monitoring were not able to carry out, the justification on whether the ability of the EM&A programme to detect air quality impacts can be maintained though monitoring was suspended is presented below.

(a)         All civil works under the Project were substantial completed in the Reporting Period and the impact source from the Project has been largely eliminated.  The potential air quality environmental impacts associated with the remaining works were considered negligible.  A proposal for suspension of air quality and noise monitoring was submitted to EPD on 28 April 2021 and the Proposal was approved by EPD on 17 May 2021.

(b)        The 1-hour TSP monitoring was measured in-situ during the construction phase and it is capable to readily detect any non-compliance of air quality.  During the Reporting Period, the 1-hour TSP monitoring results at Stations A4 and A7 are ranged from 54mg/m3 to 93mg/m3 which are far below the Action/ Limit Level, it is considered non-compliance of air quality of 24-hour TSP was unlikely to triggered.

(c)         April and May 2021 is typical wet season in Hong Kong and the weather becomes humid and hot.  It is considered that the dust impact is not significant when compare to dry season.  There were no non-compliance of air quality monitoring results recorded during the dry season in previous months, and it is believed that non-compliance of air quality of 24-hour TSP in April and May 2021 is not anticipated.

 

 


5.                           Construction Noise Monitoring

5.1                       General

5.1.1                 In the Reporting Period, construction noise quality was performed at the designated monitoring locations N1, N2a, N3a and N4.

 

5.2                       Results of Noise Monitoring

5.2.1                 In the Reporting Period, 11 sessions of noise monitoring conducted. Free-field status were performed at N1 and N3a and façade correction (+3dB(A)) has been added for the correction in according to the acoustical principles and EPD guidelines.  The noise monitoring results at the designated locations are summarized in Tables 5-1.  The database of monitoring result throughout the Reporting Period is shown in Appendix E and the relevant graphical plots are shown in Appendix F. 

Table 5-1         Summary of Construction Noise Monitoring Results

Monitoring Location

Leq, 30min (dB((A))

Max

Min

N1(*)

74

59

Record Date

15-Mar-21

14-Apr-21

12-May-21

N2a

74

56

Record Date

15-Mar-21

14-Apr-21

 

N3a(*)

67

51

Record Date

1-Apr-21

14-Apr-21

N4

66

53

Record Date

15-Mar-21

1-Apr-21

Remark:

(*) A façade correction of +3dB(A) has been added according to acoustical principles and EPD guidelines.

 

5.2.2                 Breaches of construction noise A/L levels and statistical analysis of compliance for construction noise monitoring results are summarized in Table 5-2.

Table 5-2         Summaries of Breaches of Construction Noise A/L Levels

Station

Limit Level

Action Level

Received Date

N1

0

0

N/A

N2a

0

N3a

0

N4

0

 

5.2.3                 In this Reporting Period, the noise level measured at all designated monitoring locations were below 75dB(A), also no construction noise complaint received.  Therefore, no Action and Limit Levels exceedance was triggered and no corrective action required.


6.                           Water Quality Monitoring

6.1                       General

6.1.1                 In view of completion of all the marine activities, the impact marine water quality monitoring for the Project was terminated on 31 August 2020 according to the updated EM&A Manual Section 5.1.5.  The notification of termination of impact marine water quality monitoring was issued to CEDD, IEC and EPD without adverse comment received.  Pursuant to updated EM&A Manual Section 5.1.6, post-project marine water quality monitoring was conducted in September 2020 and October 2020 for 4 weeks to fulfill the EM&A requirement and the results were presented in the monthly EM&A report (October 2020).

 

 

 


7.                           Waste Management

7.1                       General

7.1.1                 Waste management was carried out by an on-site Environmental Officer or an Environmental Supervisor from time to time. 

 

7.2                       Records of Waste Quantities

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

Ÿ   Construction & Demolition (C&D) Material;

Ÿ   Chemical Waste;

Ÿ   General Refuse; and

Ÿ   Excavated Soil.

 

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

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

Types of Waste

Quantity

Disposal Location

Mar 2021

Apr 2021

May 2021

Total C&D Materials (Inert) (‘000m3)

0.01

0

0

Tuen Mun Area 38

Reused in this Contract (Inert) (‘000m3)

0

0

0

NA

Reused in other Projects (Inert) (‘000m3)

0

0

0

NA

Disposal as Public Fill (Inert) (‘000m3)

0.01

0

0

Tuen Mun Area 38

Table 7-2         Summary of Quantities of C&D Wastes

Types of Waste

Quantity

Disposal Location

Mar 2021

Apr 2021

May 2021

Recycled Metal (‘000kg)

0

0

0

NA

Recycled Paper / Cardboard Packing (‘000kg)

0

0

0

NA

Recycled Plastic (‘000kg)

0

0

0

NA

Chemical Wastes (‘000kg)

0

0

0

NA

General Refuse (‘000m3)

0.005

0.0105

0

NENT

 

 


8.                           Ecology

8.1                       Ecology Monitoring (marine-based)

Seahorse Translocation Surveys

8.1.1                 The seahorse captured and translocation was conducted in the period of 17 to 20 January 2018.  Since the two tagged seahorses were not recorded at the Ting Kok East reception site during the first 7 days Post-translocation Seahorse Survey on 21 to 27 January 2018, Option 2 of monitoring programme was therefore adopted to perform the Post-translocation Seahorse Survey in accordance with the approved method statement (Seahorses Translocation Plan (Version 1, 11 January 2018) refers).  The Post-translocation Seahorse Survey should be performed in the first year for a period of one year after the completion of seahorse translocation.  The proposed survey time would be at least 28 man-hours (including 14 man-hours during daytime and 14 man-hours during nighttime for each survey). The survey frequency is listed below:

Ÿ   Daily for first week

Ÿ   three times per week for the second to fourth week

Ÿ   once a week for the second to fourth month

Ÿ   once a month for the fifth to twelve month

 

8.1.2                 The one year Post-translocation Seahorse Survey at Ting Kok East was completed in January 2019.  Post-construction will be undertaken at the installed shark net during the maintenance period of the Project.  A summary of submission regarding seahorse monitoring is shown in below Table 8-1.

Table 8-1         Summary of Submission for Seahorse Monitoring

EM&A Ref.

Submission

First Submission

Date

Latest Version Submission Date

Approval Status

S7.2.3.3

Seahorse Translocation Plan

19 Sep 2017

30 Nov 2017

Approved by EPD

S7.2.3.8

Pre-translocation Survey Report for Seahorse

1 Dec 2018

11 June 2020

Approved by EPD

S7.2.3.4

Seahorse Translocation Report

29 Jan 2018

11 June 2020

Approved by EPD

S7.2.3.9

Post-translocation monitoring report (all reports)

 

1st Week

29 Jan 2018

To be updated by the Contractor

The report was submitted to EPD on 23 June 2021

2nd Week

4 Feb 2018

3rd Week

27 Mar 2018

4th Week

27 Mar 2018

Second Month

27 Mar 2018

Third Month

27 Mar 2018

Fourth Month

25 May 2018

Fifth Month

28 August 2018

Sixth Month

28 August 2018

Seven Month

28 August 2018

Eighth Month

4 Oct 2018

14 July 2020

Ninth Month

19 Oct 2018

12 April 2021

Approved by EPD on 27 Apr 21

Tenth Month

18 Nov 2018

12 April 2021

Eleventh Month

21 Dec 2018

12 April 2021

Twelfth Month

15 Feb 2019

12 April 2021

S7.2.3.10

Post-construction monitoring report

To be submitted

To be submitted

Pending approval

 

Marine Ecological Monitoring

8.1.3                 In accordance to Section 7.2 of the updated EM & A manual, it is required to conducting marine ecological monitoring after marine fauna relocation at a six-monthly interval at (i) vicinity site near bathing beach at Lung Mei and (ii) The Reception Site of Ting Kok East until expiry of the Contract Maintenance Period.  

 

8.1.4                 The objectives of the marine ecological monitoring are to collect data for determining whether there is any impact on the marine ecological resources (i) in the vicinity of the Site due to the development of the bathing beach at Lung Mei, and (ii) at the Reception Site of Ting Kok East due to translocation of the target marine fauna.

 

Marine Fauna Translocation

8.1.5                 Target marine fauna, including fishes, starfish, sea urchins and sea cucumbers, shall be translocated from the intertidal area of the Site at Lung Mei to the intertidal area at the Reception Site of Ting Kok East before commencement of sand filling works or any other works that may cause disturbances to the existing marine ecology. The translocation works shall cover capturing, handling, holding, transporting and releasing of the captured target marine fauna.

 

8.1.6                 Baseline quantitative quadrat surveys were conducted at the vicinity site of Lung Mei beach and Ting Kok East in June 2017.  Moreover, fauna translocation was completed in January 2018. After the translocation, marine ecological monitoring was conducted at a six-monthly interval at vicinity site near bathing beach at Lung Mei and the