AUES Job No.: TCS00715/14

 

 

 

 

 

 

 

 

 

Tuen Mun - Chek Lap Kok Link

Contract No. HY/2013/12 ¡V

Northern Connection Toll Plaza and Associated Works

 

 

 

 

 

 

 

 

 

 

4th Annual Environmental Monitoring and Audit (EM&A) Review Report ¡V November 2017 to October 2018

 

 

 

 

 

 

 

 

 

 

Prepared For

CRBC and Kaden Joint Venture

 

 

 

 

 

 

 

 

 

 

 

 

 

Date

Reference No.

Prepared By

Certified By

23 May 2019

TCS00715/14/600/R0521v2

Ben Tam

(Environmental

Consultant)

T.W. Tam

(Environmental Team

Leader)

 

 


 

 

 

 

EXECUTIVE SUMMARY

ES01       In August 2014, CRBC-Kaden Joint Venture (hereafter ¡§CRBC-Kaden JV¡¨) has been awarded the Contract No. HY/2013/12 -Northern Connection Toll Plaza and Tunnel Section of the Tuen Mun ¡V Chek Lap Kok Link (hereinafter called ¡§the Contract¡¨) by the Highways Department (HyD).  The construction phase of the Contract was commenced on 23 October 2014.

 

ES02       Before the Contract commencement, the baseline air quality monitoring was carried out by the ET of HY/2012/08 from 16th to 31st October 2013.  A set of Action and Limit Levels (A/L Levels) of air quality performance criteria was proposed by ET of HY/2012/08 which has been verified by IEC and endorsed by EPD.  The Action and Limit Levels of the air quality adopted for the Contract is shown in Table ES-01.

Table ES-01    Action and Limit Levels of Air Quality Monitoring

Monitoring Station

24-hour TSP, (mg /m3)

1-hour TSP, (mg/m3)

Action Level

Limit Level

Action Level

Limit Level

ASR1

213

260

331

500

ASR5

238

260

340

500

AQMS1

213

260

335

500

ASR6

238

260

338

500

ASR10

214

260

337

500

 

ES03       In September 2013, baseline survey for Pitcher Plant has been conducted within the project area by a suitably qualified ecologist.  In mid-September 2014, Contract HY/2013/12 has also conducted a one-off survey to confirm the number of existing Pitcher Plant.  For cultural heritage, a condition survey for the grave was conducted on 23 September 2014.  The Baseline Monitoring Report for the Contract was submitted on 7 October 2014 for IEC¡¦s verification and 25 November 2014 for EPD¡¦s endorsement.

 

ES04       This is the 4th Annual EM&A Review Report for the ¡§Tuen Mun - Chek Lap Kok Link - Northern Connection Toll Plaza and Associated Works¡¨ under Environmental Permit No. EP-354/2009/D (hereinafter ¡¥¡¥the EP¡¦¡¦), covering the period from 1 November 2017 to 31 October 2018 (hereinafter ¡§Reporting Period¡¨).

 

Summary of EM&A activities for the Reporting Period

ES05       In the Reporting Period, the EM&A activities is summarized in Table ES-02.

Table ES-02     Summary EM&A Activities Undertaken in the Reporting Period

Environmental Aspect

Environmental Monitoring Parameters / Inspection

Sub-total Occasions

Total

1st Quarter

2nd Quarter

3rd Quarter

4th Quarter

Air Quality

1-hour TSP

465

420

465

450

1800

24-hour TSP

155

140

155

150

600

Cultural heritage inspection

Grave G1

13

12

14

13

52

Landfill Gas Monitoring

Oxygen; Methane & Carbon Dioxide

76 days

67 days

48 days

76 days

267 days

Landscape &Visual

Landscape & Visual Monitoring

13

13

13

13

52

Joint Site Inspection / Audit

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

13

12

14

13

52

 


 

Breach of Action and Limit (A/L) Levels

ES06       In according with the air quality measurement results by the ET of Contract HY/2012/08 total 29 Action Level and 2 Limit Level exceedances of 1-hour TSP were recorded; 2 Action Level and 3 Limit Level exceedance of 24-hour TSP was recorded in the Reporting Period.

 

ES07       For landfill gas monitoring, the concentration of all parameters were detected within the acceptable levels.  Moreover, no noise complaint was received in the Reporting Period.  Table ES-03 is summarized breach of environmental performance criteria.

Table ES-03    Action and Limit (A/L) Levels Breach Summarized in the Reporting Period

Environmental Aspect

Monitoring Parameters

Action Level

Limit Level

Event & Action

NOE Issued

Investigation

Corrective Actions

Air Quality

1-hour TSP

29

2

27

27

0

24-hour TSP

2

3

5

5

0

Landfill Gas Monitoring

Oxygen

0

0

0

0

0

Methane

0

0

0

0

0

Carbon Dioxide

0

0

0

0

0

 

Environmental Complaint

ES08       Only (1) environmental complaint was received in the first quarter of Reporting Period. The complaint received on 30 January 2018 regarding construction noise and light nuisance created at River Trade Terminal during mid-night. The complainant also complained dust issue at River Trade Terminal. The statistics of environmental complaint is listed in Table ES-04.

Table ES-04    Statistical Summary of Environmental Complaints

Reporting Period

Complaint Nature

Total Registered

Water Quality

Construction Dust

Construction Noise

Others

1 November 2017 ¡V 31 October 2018

NA

Ÿ 30 January 2018

Ÿ 30 January 2018

Ÿ 30 January 2018

1

 

ES09       Complaint investigation was conducted by the ET and the corresponding investigation report for the complaint was submitted to relevant parties.  Based on investigation results, the complaint was not project related.

 

Notification of Summons and Successful Prosecutions

ES10       No environmental summons or successful prosecutions were recorded in the Reporting Period.

 

Site Inspection

ES11       For past twelve months, total 52 occasions joint site inspection were carried out by the RE, IEC, ET and the Contractor.  For joint site inspections, no non-compliance was observed. However, 97 observations/reminders were recorded within the past twelve months.

 

ES12       During each occasion of site inspection, Pitcher Plants of ecology and grave of culture heritage were also to inspect and audit.

 

Future Key Issues

ES13       Construction dust emission would be a key environmental issue during construction work of the Contract at dry season.  Dust mitigation measures such as watering at least 12 times per day on all exposed soil within the Project site and associated work areas in Tuen Mun area throughout the construction period should be implemented in accordance with the EP requirement.

 

ES14       Muddy water or other water pollutants from sites surface flow to public area should be avoided.  Water quality mitigation measures to prevent surface runoff to impact public areas should be fully implemented.

 

 

 

 


Table of Contents

1     Introduction                                                                                                                       1

1.1            Contract Background                                                                                    1

1.2            Report Structure                                                                                                1

2     Contract Organization and Construction progress and Environmental Submissions                                                                                                                            2

2.1            Contract Organization                                                                                   2

2.2            Construction Progress                                                                                    2

2.3            Summary of Environmental Submissions                                                 2

3     Summary of Impact Monitoring Requirements Under the Contract  4

3.1            General                                                                                                                   4

3.2            Air Quality Monitoring Parameters                                                          4

3.3            Monitoring Location                                                                                        4

3.4            Monitoring Frequency                                                                                     4

3.5            Derivation of Action/Limit (A/L) Levels                                                      5

3.6            Other Environmental Aspects                                                                      6

4     Air Quality Monitoring                                                                                                 8

4.1            General                                                                                                                   8

4.2            Air Quality Monitoring Results in Reporting Period                         8

4.3            Summary of Action and Limit (A/L) Levels Exceedance (non-compliance)         8

4.4            Air Quality Exceedance Investigation                                                     9

5     Ecology Monitoring                                                                                                     10

5.1            General                                                                                                                 10

5.2            Pitcher Plants Inspection                                                                             10

6     CULTURAL HERITAGE                                                                                                          11

6.1            General                                                                                                                 11

6.2            Grave Inspection                                                                                               11

7     LandscAPe and Visual                                                                                                    12

7.1            General                                                                                                                 12

7.2            Landscape and Visual Inspection                                                              12

8     Landfill Gas Hazard Monitoring                                                                           13

8.1            General                                                                                                                 13

8.2            Landfill Gas Monitoring Result                                                                14

9     Waste Management                                                                                                         15

9.1            General Waste Management                                                                        15

9.2            Records of Waste Quantities                                                                       15

10   Inspection and Auditing                                                                                               16

10.1          Site Inspection                                                                                                    16

11   Environmental Complaint and Non-compliance                                           17

11.1          Environmental Complaint, Summons and Prosecution                   17

11.2          Summary record of all complaints, action and working procedures 17

12   Implementation Status of Mitigation Measures                                            19

12.1          General Requirements                                                                                   19

13   Conclusions and Recommendations                                                                     20

13.1          Conclusions                                                                                                        20

13.2          Recommendations                                                                                             20

 


 

List of TABLES

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

Table 3-1      Designated Air Quality Monitoring Stations under the Contract

Table 3-2      Enhanced TSP Monitoring Plan ¡V Construction Phase

Table 3-3      TSP Action and Limit Levels for Impact Air Quality Monitoring

Table 3-4      Actions in the Event of Landfill Gas being Detected in Excavation / Confined Area

Table 4-1      Summary of Air Quality Monitoring Exceedance

Table 8-1      Landfill Gas Monitoring Zone

Table 8-2      Summary of Landfill Gas Measurement Results in this Annual for TD1 & LMR

Table 9-1      Summary of Quantities of Inert C&D Materials

Table 9-2      Summary of Quantities of C&D Wastes

Table 10-1    Summary of Reminders/Observations of Site Inspection for the Annual

Table 11-1    Statistical Summary of Environmental Exceedance

Table 11-2    Statistical Summary of Environmental Complaints

Table 11-3    Statistical Summary of Environmental Summons

Table 11-4    Statistical Summary of Environmental Prosecution

Table 12-1    Environmental Mitigation Measures

 

 

 

List of Appendices

Appendix A  Project Layout Plan

Appendix B Layout Plan of the Contract

Appendix C  Organization of the Contract

Appendix D Master Construction Program

Appendix E  Monitoring Locations for the Contract

Appendix F  Event and Action Plan

Appendix G Graphical Plots

Appendix H Environmental Mitigation Measures Implementation Schedule (EMMIS)

 

 

 



1                             Introduction

1.1                       Contract Background

1.1.1                 CRBC-Kaden Joint Venture (hereafter ¡§CRBC-Kaden JV¡¨) is commissioned by the Highways Department (HyD) as the Main Contractor of the Contract No. HY/2013/12 ¡V Northern Connection Toll Plaza and Tunnel Section ((hereafter ¡§the Contract¡¨) and this Contract is part of the Tuen Mun ¡V Chek Lap Kok Link (TM-CLK Link Project).  TM-CLK Link Project is a Designated Project under the latest Environmental Permit number EP-354/2009/D issued on 13 March 2015.  The layout Plan of the Project and the Contract are showed in Appendix A and Appendix B respectively.

 

1.1.2                 The works of the Contract mainly include:-

a.              construction of an approximately 5.4 hectares toll plaza and an associated footbridge;

b.             construction of associated carriageways including approximately 0.74 kilometre land viaducts, and an approximately 230 metres vehicular underpass to connect the toll plaza and the roundabout at Lung Mun Road/Lung Fu Road;

c.              site formation for the construction of the toll plaza, including associated slope works and natural terrain hazard mitigation measures;

d.             modification and realignment of the existing Lung Mun Road and Lung Fu Road; and

e.              associated waterworks, drainage, sewerage and landscaping works, etc..

 

1.1.3                 AECOM Asia Company Limited as the Resident Engineer (RE) and Ramboll Hong Kong Limited as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO) were employed by the HyD.  For implementation of the environmental monitoring and audit (EM&A) programme under the Contract, CRBC-Kaden JV has appointed Action-United Environmental Services & Consulting (AUES) as the Environmental Team (ET) to responsible relevant environmental monitoring work.

 

1.1.4                 Construction phase of the Contract was commenced on 23 October 2014.  This is the Forth (4th) Annual EM&A Review Report to summarize the monitoring results and inspection findings with the Contractor performance from 1 November 2017 to 31 October 2018 (hereinafter ¡§Reporting Period¡¨) for the past twelve months.

 

1.2                       Report Structure

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

Section 1     Introduction

Section 2     Contract Organization and Construction Progress and Environmental Submissions

Section 3     Summary of Impact Monitoring Requirements under the Contract

Section 4     Air Quality Monitoring

Section 5     Ecology Monitoring

Section 6     Cultural Heritage

Section 7     Landscape and Visual

Section 8     Landfill gas hazard Monitoring

Section 9     Waste Management

Section 10   Inspection and Auditing

Section 11   Environmental Complaint and Non-Compliance

Section 12   Implementation Status of Mitigation Measures

Section 13   Conclusions and Recommendations


2                             Contract Organization and Construction progress and Environmental Submissions

2.1                       Contract Organization

2.1.1                 The Contract organization and contact details of key personnel are shown in Appendix C.

 

2.2                       Construction Progress

2.2.1                 In the Reporting Period, the major construction activity conducted under the Contract is summarized in below.  Moreover, the master construction program of the Contract is enclosed in Appendix D.

Ÿ   Instrumentation and Monitoring

Ÿ   Site Formation ¡V Earthwork on Slope D and E; surface drainage on slope C, D & E and Portion H

Ÿ   Toll Plaza Decking TD1, TD2

Ÿ   Toll Plaza Footbridge

Ÿ   Retaining Structure RW_A, RW_B, Bridg G2 and TP_G

Ÿ   Bridge G1,Bridge H1 by Form Traveller

Ÿ   Toll Collector Subway & Associated Works

Ÿ   Sewer Culvert at FC1 and FC2

Ÿ   Road and Drainage Works +11mPD, +19mPD, LMR central median and Portion H

Ÿ   Sewer culvert at FC1 and FC2

Ÿ   Construction of bus shelter

Ÿ   Toll Booth Canopy

Ÿ   Road pavement works at +19mPD platform

Ÿ   Vehicular Underpass ¡V Cable Trough construction and partition wall construction

Ÿ   Excavation and lateral Support of Construction of Retaining Wall TP_G

Ÿ   Parapet construction for Retaining Structure RW_A and Bridge G2

Ÿ   Temporary Traffic Arrangement at Lung Mun Road and Lung Fu Road

Ÿ   Backfilling Work of Existing Sewer Culvert between MH1 to MH8

Ÿ   Construction of Storage Area at Retaining Wall B

Ÿ   Retaining Structure TP_G at Portion H

Ÿ   Construction of Retaining Walls RW_E and HAS at Portion F

Ÿ   Construction of planter at Footbridge

Ÿ   Drainage works at Lung Mun Road

Ÿ   Laying Watermain at Portion G

Ÿ   E & M Works at Retaining Wall B

Ÿ   Pre-stressing of External Tendons at H1

Ÿ   Installation of VE panels at RW_B

 

2.3                       Summary of Environmental Submissions

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

Ÿ   Monitoring Plan on construction dust (submission refer to Contract HY/2012/08)

Ÿ   Landscape and Visual Plan (not yet endorsed by EPD)

Ÿ   Waste Management Plan (endorsed by the EPD on 16 March 2015)

Ÿ   Baseline Monitoring Report (not yet endorsed by EPD)


 

 

2.3.2                 Summary of the relevant permits, licenses, and/or notifications on environmental protection as obtained by the Contract in the past twelve months is presented in Table 2-1.

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

No.

Type of Permit/ License

Reference/

License No.

Date of Issue

Date of Expiry

1

Air pollution Control (Construction Dust) Regulation

377719

06-08-2014

N/A

2

Chemical Waste Producer Registration - Waste Producers Number

5117422C389301

03-09-2014

N/A

3

Water Pollution Control Ordinance -Variation of Effluent Discharge License

WT00023973-2016

25-10-2017

30-09-2019

4

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

7020460

01-08-2014

N/A

5

CNP for Multiple Task

GW-RW0230-17

08-05-2017

04-11-2017

GW-RW0605-17

25-11-2017

24-05-2018

GW-RW0154-18

25-05-2018

24-11-2018

6

CNP for Tunnel

GW-RW0243-17

23-05-2017

22-11-2017

GW-RW0567-17

26-10-2017

22-05-2018

GW-RW0140-18

23-05-2018

22-11-2018

7

CNP for falsework erection

GW-RW0205-17

25-04-2017

25-11-2017

GW-RW0563-17

26-10-2017

24-02-2018

GW-RW0066-18

26-02-2018

19-05-2018

8

CNP for Portion H Roundabout

GW-RW0242-17

22-05-2017

17-11-2017

GW-RW0568-17

26-10-2017

22-05-2018

GW-RW0155-18

25-05-2018

17-11-2018

9

CNP for Road Paving Works

GW-RW0211-17

25-04-2017

01-11-2017

GW-RW0561-17

26-10-2017

01-02-2018

GW-RW0044-18

01-02-2018

28-04-2018

10

CNP for Lung Mun Road

GW-RW0174-18

20-05-2018

12-08-2018

GW-RW0334-18

13-08-2018

17-11-2018

11

CNP for Lung Fu Road

GW-RW0135-18

02-05-2018

27-07-2018

GW-RW0289-18

30-07-2018

27-10-2018

GW-RW0436-18

29-10-2018

01-12-2018

                      Note: CNP is Control Noise Permit

 

 

 

 


3                             Summary of Impact Monitoring Requirements Under the Contract

3.1                       General

3.1.1                 In view of the construction works under the Contract, the major construction activities are land-based.  In accordance with the Project EM&A Manual requirements, environmental aspect monitoring should be conducted including air quality, ecological (Pitcher plant), cultural heritage and site inspections during construction period.  In addition, landscape and visual (L&V) monitoring, landfill gas monitoring and audit of the contractor¡¦s implementation of the construction noise and land-based water quality pollution control measures are also required for the Contract.

 

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

 

3.2                       Air Quality Monitoring Parameters

3.2.1                 The construction phase air quality monitoring shall cover the following parameters:

                     1-hour TSP; and

                     24-hour TSP

 

3.3                       Monitoring Location

3.3.1                 The air quality monitoring stations for impact monitoring are listed in Table 3.1 and illustrated in Appendix E.

Table 3-1      Designated Air Quality Monitoring Stations under the Contract

ID

Location

Air monitoring station Description

ASR1

Tuen Mun Fireboat Station

EM&A Manual

ASR5

Pillar Point Fire Station

EM&A Manual

AQMS1

Previous River Trade Golf

Enhanced TSP Level under EP condition 2.4

ASR6

Butterfly Beach Laundry

Enhanced TSP Level under EP condition 2.4

ASR10

Butterfly Beach Park

Enhanced TSP Level under EP condition 2.4

 

3.4                       Monitoring Frequency

General Requirement

3.4.1                 For regular impact monitoring, the sampling frequency of at least once in every six days shall be strictly observed at five of the designated monitoring stations for 24-hr TSP monitoring.  For 1-hr TSP monitoring, the sampling frequency of at least three times in every six days should be undertaken at five locations when the highest dust impact occurs.  The stations to be monitored should be selected based on the prevailing wind direction and their proximity to the active construction works.

 

Special Requirement

3.4.2                 As per Condition 2.4 of the EP of TM-CLKL, an enhanced monitoring plan on TSP level at Tuen Mun (¡§the Enhanced TSP Monitoring Plan¡¨) is required to be submitted to the DEP for approval at least 1 month before the commencement of construction of the Project.  Details of the Enhanced TSP Monitoring Plan under Contract No. HY/2012/08 could be found from the project website.  The air quality monitoring work under this Contract will follow the monitoring requirement of enhanced TSP monitoring under the project.

 

3.4.3                 The air quality monitoring requirements for the Contract is shown in Table 3-2.


 

Table 3-2      Enhanced TSP Monitoring Plan ¡V Construction Phase

Condition

Monitoring Parameter

Monitoring Location

Frequency

Monitoring Requirement

General

1-hour TSP

ASR1, ASR5, AQMS1, ASR6, ASR10

3 times per day every six days

Throughout the Northern Connection, toll plaza and tunnel buildings construction works

24-hour TSP

ASR1, ASR5, AQMS1, ASR6, ASR10

Daily every six days

Special

1-hour TSP

ASR1, ASR5, AQMS1, ASR6, ASR10

3 times per day every three days

Northern Connection

During excavation works for launching shaft, excavation work for Cut and Cover Tunnel and Cut and Cover Tunnel Construction

Toll Plaza

During excavation, slope works, construction of road and superstructures and wind erosion from open sites and stockpiling areas

Tunnel Buildings

During excavation, foundation works, construction of superstructures and wind erosion from open sites and stockpiling areas

24-hour TSP

ASR1, ASR5, AQMS1, ASR6, ASR10

Daily every three days

 

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

3.5.1                 The baseline monitoring results formed the basis for determining the air quality criteria for the impact monitoring. The ET shall compare the impact monitoring results with air quality criteria set up for 24-hour TSP and 1-hour TSP.  Based on results of the approved Baseline Monitoring Report of HyD Contract HY/2012/08, the proposed Action and Limit Levels are shown in Tables 3-3.

Table 3-3      TSP Action and Limit Levels for Impact Air Quality Monitoring

Air Quality Monitoring Stations

24-hour TSP (£gg/m3)

1-hour TSP (£gg/m3)

Action Level

Limit Level

Action Level

Limit Level

ASR1

213

260

331

500

ASR5

238

260

340

500

AQMS1

213

260

335

500

ASR6

238

260

338

500

ASR10

214

260

337

500

 

3.5.2                 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 F.


 

 

3.6                       Other Environmental Aspects

Noise

3.6.1                 The TM-CLKL EIA study concluded that no existing noise sensitive receiver (NSR) was identified within the Study Area at Tuen Mun.  Therefore, no planned NSR designated at the Project sites of Tuen Mun.  Based upon this, no noise monitoring is necessary for construction phase under the Contract.

 

3.6.2                 Regular site inspections and audits will be carried out during the construction phase in order to confirm compliance with the regulatory requirements and conformity of the Contractor with regard to noise control and contract conditions.

 

Water Quality

3.6.3                 No marine works will be undertaken under the Contract.  Based upon this, no water quality monitoring is necessary for construction phase.

 

Ecology

3.6.4                 Since the Works of the Contract would not generate marine ecological impact, no dolphin monitoring under the Contract was conducted.

 

3.6.5                 During construction phase, the ET will perform Pitcher Plants inspection at least once every week to report the growth condition (only undertaken at Establish period) and protection measures.

 

Landscape and Visual

3.6.6                 According to EIA recommendation, site inspection and audit shall be required to be undertaken in the operation stage. Measures to mitigate landscape and visual impacts during construction should be checked and monitored by a Registered Landscape Architect to ensure compliance with the intended aims of the mitigation measures in accordance with the EM&A Manual.

 

Cultural Heritage

3.6.7                 Grave G1 of heritage resources is situated near the proposed toll plaza in Tuen Mun.  Site inspections should be undertaken at least once per week throughout the construction period to ensure compliance with the intended aims of recommended mitigation measures.

 

Monitoring and Measurement of Landfill Gas

3.6.8                 During EIA study, landfill gas hazards are likely to be generated from the Pillar Point Valley (PPV) Landfill. Hence, regular landfill gas monitoring is recommended during construction of the proposed toll plaza.  Safety Officer or an approved and appropriated qualified person should be carried out the monitoring works to make sure the area free of landfill gas before any man enters in the area.


 

 

3.6.9                 Depending on the results of the measurements, actions required will vary and should be set down by the Safety Officer or other appropriately qualified person. As a minimum these should encompass those actions specified as follow:

Table 3-4      Actions in the Event of Landfill Gas being Detected in Excavation / Confined Area

Parameter

Measurement

Action

Oxygen

< 19%

- Ventilate to restore oxygen to > 19%

< 18%

- Stop work

- Evacuate personnel / prohibit entry

- Increase ventilation to restore to > 19%

Methane

> 10% LEL (> 0.5% v/v)

- Prohibit hot work

- Ventilate to restore methane to < 10% LEL

> 20% LEL (>1% v/v)

- Stop work

- Evacuate personnel / prohibit entry

- Increase ventilation to restore to < 10%

Carbon Dioxide

> 0.5%

- Ventilate to restore oxygen to < 0.5%

> 1.5%

- Stop work

- Evacuate personnel / prohibit entry

- Increase ventilation to restore to < 0.5%


 

4                             Air Quality Monitoring

4.1                       General

4.1.1                 According to the Updated EM&A Manual and the Enhanced Total Suspended Particulates (TSP) Monitoring Plan, the air quality impact monitoring was conducted at the five air quality monitoring stations during the Reporting Period by the ET of Contract HY/2012/08.  Sharing of impact air quality monitoring data between HY/2012/08 and HY/2013/12 is agreed by all relevant parties.  Therefore the Contract is not required to conduct its own dust monitoring exercise until the Contract HY/2012/08 is ended.

 

4.2                       Air Quality Monitoring Results in Reporting Period

4.2.1                 In the Reporting Period, total 1,800 of 1-hr TSP measurements and 600 events of 24-hours TSP monitoring at five proposed locations were carried out by the ET of Contract HY/2012/08.  Detailed air quality monitoring results and statistical analysis of the trends of air quality data during the Reporting Period can be referred to the Monthly EM&A Reports (from November 2017 to October 2018) and the Fifth Annual EM&A Review Report (November 2017 to October 2018) prepared by the ET of Contract HY/2012/08.

 

4.3                       Summary of Action and Limit (A/L) Levels Exceedance (non-compliance)

4.3.1                 According to the air quality monitoring result provided by Contract HY/2012/08, total 29 Action Level and 2 Limit Level exceedances of 1-hour TSP were recorded; 2 Action Level and 3 Limit Level exceedance of 24-hour TSP was recorded in the Reporting Period.  Notification on Exceedances (NOEs) were issued after receiving the monitoring result from the Contract HY/2012/08.  The summary of air quality exceedance is shown in Table 4-1.

Table 4-1      Summary of Air Quality Monitoring Exceedance

Date of Exceedance

Monitoring Station

Air Quality Parameter

Result

Exceed

2 November 2017

ASR5

1Hr TSP

351 µg/m3

Action Level

2 November 2017

ASR10

1Hr TSP

403 µg/m3

Action Level

2 November 2017

ASR10

1Hr TSP

816 µg/m3

Limit Level

11 November 2017

ASR5

1Hr TSP

389 µg/m3

Action Level

29 November 2017

ASR10

1Hr TSP

455 µg/m3

Action Level

8 December 2017

ASR5

1Hr TSP

353 µg/m3

Action Level

11 December 2017

ASR1

1Hr TSP

399 µg/m3

Action Level

11 December 2017

ASR1

1Hr TSP

443 µg/m3

Action Level

11 December 2017

ASR5

1Hr TSP

417 µg/m3

Action Level

20 December 2017

ASR1

1Hr TSP

357 µg/m3

Action Level

20 December 2017

ASR5

1Hr TSP

372 µg/m3

Action Level

26 December 2017

ASR1

1Hr TSP

407 µg/m3

Action Level

8 December 2017

ASR1

24Hr TSP

328 µg/m3

Limit Level

8 December 2017

ASR5

24Hr TSP

279 µg/m3

Limit Level

11 December 2017

ASR1

24Hr TSP

218 µg/m3

Action Level

17 December 2017

ASR5

24Hr TSP

265 µg/m3

Limit Level

29 December 2017

ASR10

24Hr TSP

250µg/m3

Action Level

13 January 2018

ASR5

1Hr TSP

345 µg/m3

Action Level

16 January 2018

ASR5

1Hr TSP

396 µg/m3

Action Level

16 January 2018

ASR5

1Hr TSP

384 µg/m3

Action Level

16 January 2018

ASR5

1Hr TSP

345 µg/m3

Action Level

22 January 2018

ASR5

1Hr TSP

363 µg/m3

Action Level

22 January 2018

ASR5

1Hr TSP

380 µg/m3

Action Level

3 February 2018

ASR1

1Hr TSP

392 µg/m3

Action Level

3 February 2018

ASR5

1Hr TSP

455 µg/m3

Action Level

2 March 2018

ASR1

1Hr TSP

460 µg/m3

Action Level

20 March 2018

ASR1

1Hr TSP

446 µg/m3

Action Level

13 April 2018

ASR5

1Hr TSP

389 µg/m3

Action Level

26 August 2018

ASR1

1Hr TSP

417 µg/m3

Action Level

29 August 2018

ASR1

1Hr TSP

403 µg/m3

Action Level

7 September 2018

ASR1

1Hr TSP

392 µg/m3

Action Level

28 September 2018

ASR1

1Hr TSP

584 µg/m3

Limit Level

28 September 2018

ASR1

1Hr TSP

417 µg/m3

Action Level

4 October 2018

ASR1

1Hr TSP

340 µg/m3

Action Level

10 October 2018

ASR1

1Hr TSP

451 µg/m3

Action Level

31 October 2018

ASR1

1Hr TSP

371 µg/m3

Action Level

 

4.4                       Air Quality Exceedance Investigation

4.4.1                 Investigation for the 1-hour and 24-hour TSP exceedance was undertaken upon received the monitoring results by the ET.

 

4.4.2                 For the exceednances in the reporting period, the investigation reports were submitted to all relevant parties and concluded that those exceedances are unlikely related to the Contract work and no corrective action was required accordingly. The detailed investigation reports and findings can be referred to the Monthly EM&A Reports of the contract.

 

 


4.5                        

5                             Ecology Monitoring

5.1                       General

5.1.1                 According to the EM&A Manual requirements, regularly inspection for Pitcher Plants at least once every week to report it growth and protection measure situation shall be conducted during construction period.

 

5.1.2                 Total 181 pitcher plants were transplanted to final receptor site and the rest of the Pitcher Plant individuals (certified dead by the specialist) were not transplanted and were treated as general refuse. All the transplantation of pitcher plant from the nursery site to final receptor site was completed on 10th September 2015.

 

5.2                       Pitcher Plants Inspection

5.2.1                 A total 52 occasions of inspection were carried out by the Contractor and ET during the Reporting Period.

 

5.2.2                 Establishment period for the pitcher plants was completed at the end of September 2016, the join site completion of Establishment period visit with AFCD was undertaken on 23 September 2016 and the final pitcher plants report was submitted to AFCD on early December 2016. Therefore after 23 September 2016, only the integrity of the protection fence was checked to fulfill the EIA requirement. During each inspection, the protection mitigation measures were checking at the final receptor area to make sure no site activities was undertaken inside the protection zone. Besides, no construction activities were observed to be carried out at the surrounding of the final receptor area.  The condition of chain link fence is good and no repair or maintenance is required.

 

5.2.3                 No matters the completion of establish period, the Contractor should properly maintain the fencing along the receptor area to avoid disturbance to the pitcher plants under the EIA requirement.

 

 


 

6                             CULTURAL HERITAGE

6.1                       General

6.1.1                 According to the EM&A Manual requirements, regular inspection for heritage resource Grave G1 shall be audited by the ET at least once every week to ensure recommended mitigation measures implemented during construction period.  The aim of the survey is prevention of any possible damage to the grave and to ensure that proposed mitigation measures are implemented. The broad scope of the audit will involve supervision of the following:

 

Ÿ   Non-contact effects of the engineering works, such as vibration from pneumatic drills which could cause damage, such as foundation or wall cracks and loosening of tiles or fixtures; and

Ÿ   Contact between the historic structures and equipment and materials associated with the engineering works.

 

6.1.2                 Specifically, the monitoring programme will entail the following tasks:

 

Ÿ   The extent of the agreed works areas should be regularly checked during the construction phase to ensure the buffer is being maintained; and

Ÿ   Ensure no stockpiling or equipment storage is affecting the structure.

 

6.1.3                 In the event of non-compliance the responsibilities of the relevant parties is detailed in the Event/ Action Plan in Appendix F.

 

6.2                       Grave Inspection

6.2.1                 In this Reporting Period, there are total 52 occasions to carry out the Grave G1 inspection.  During site inspection, buffer zone was observed between the working area and the Grave and no construction material or equipment was stored nearby the Grave.

 

6.2.2                 Since construction works very close to buffer zone of the Grave G1, cultural heritage mitigation measures and protection measures as provided by the Contractor, therefore has fully implemented in accordance with EM&A Manual requirements

 


 

7                             LandscAPe and Visual

7.1                       General

7.1.1                 According to EM&A Manual requirements, monitoring of Contractor¡¦s operations during construction period to report on Contractor¡¦s compliance should be carried out on weekly basis.  Measure to mitigate landscape and visual impact during construction should be checked and monitored by a Registered Landscape Architect to ensure compliance with the intended aims of the mitigation measures.  Moreover, the progress of the engineering works shall be regularly reviewed on site to identify the earliest practical opportunities for the landscape works to be undertaken.

 

7.2                       Landscape and Visual Inspection

7.2.1                 In this Reporting Period, Registered Landscape Architect with the Contractor had undertaken a total of 52 occasions of inspection.  

 

7.2.2                 During the Reporting Period, most of the landscape works such as planting was not yet commenced, but some transplanting works was commenced on 22 May 2017. Existing trees on boundary of the project area were properly protected and no damage of the existing trees were record in this Reporting Period. Felled trees during construction were collected by a licensed collector for recycling.  The detailed inspection checklists can be referred to relevant Monthly EM&A Reports of the Contract.

 

 

 

 


 

8                             Landfill Gas Hazard Monitoring

8.1                       General

8.1.1                 During EIA study, landfill gas hazards are likely to be generated from the Pillar Point Valley (PPV) Landfill. Hence, regular landfill gas monitoring is recommended during construction of the proposed toll plaza.

 

8.1.2                 During construction, a Safety Officer should be appointed to carry out the monitoring works. The monitoring frequency and areas to be monitored should be set down prior to commencement of ground-works either by the Safety Officer or an approved and appropriated qualified person. The routine monitoring should be carried out in all excavations, manholes, chambers, relocation of monitoring wells and any other confined spaces that may have been created. All measurements in excavations should be made with the extended monitoring tube located not more than 10 mm from the exposed ground surface. Monitoring should be performed properly to make sure that the area is free of landfill gas before any man enters in the area.

 

8.1.3                 For excavations deeper than 1m, measurements should be carried out:

Ÿ   at the ground surface before excavation commences;

Ÿ   immediately before any worker enters the excavation;

Ÿ   at the beginning of each working day for the entire period the excavation remains open; and

Ÿ   periodically through the working day whilst workers are in the excavation.

 

8.1.4                 For excavations between 300mm and 1m deep, measurements should be carried out:

Ÿ   directly after the excavation has been completed; and

Ÿ   periodically whilst the excavation remains open

 

8.1.5                 For excavations less than 300mm deep, monitoring may be omitted, at the discretion of the Safety Officer or other appropriately qualified person.

 

8.1.6                 To ensure the accuracy of the monitoring data, zeroing of the gas analyser shall be undertaken at the start of each day¡¦s monitoring.  As part of the QA/QC, calibration of the gas analyser shall be conducted at least once every two weeks according to the specification of the manufacturer¡¦s operation manual.

 

8.1.7                 The landfill consultation zone was divided into 6 monitoring zones. The landfill gas monitoring zones are summarized in Table 8-1 and the layout plan for the monitoring zone is illustrated in Appendix E.

Table 8-1      Landfill Gas Monitoring Zone

ID

Location

Excavation >300mm deep undertaken in this reporting period

TD1

TD1, Retaining Wall A, Grave G1 and Subway

Yes (Suspended between 7 June and 10 July 2018 & after 14 September 2018)

RW-B

Retaining Wall B

No

RW-F

Retaining Wall F

No

S&U

Slope and Underpass

No

BW

Bridge Works (G2, H1)

No

LMR

Lung Mun Road

Yes (Starting from 3 April 2018 & Suspended between 7 June and 10 July 2018)

 

 

8.2                       Landfill Gas Monitoring Result

8.2.1                 A BIOGAS 5000 gas analyser was used for the landfill gas monitoring. In the past twelve months, landfill gas monitoring was conducted at monitoring zone TD1 & LMR between November 2017 and October 2018. For the monitoring zone LMR, the excavation works was resumed on 3 April 2018, therefore the landfill gas monitoring at LMR was resumed after 3 April 2018. For the monitoring zone TD1, the excavation works was completed after 14 September 2018, therefore the landfill gas monitoring at TD1 was suspended after 14 September 2018. Moreover, during the period from 7 June to 10 July 2018, no excavation works was undertaken at both zones, therefore the landfill gas monitoring was temporary suspended.

 

8.2.2                 There were total 266 monitoring days carried out by the Safety Officer or an approved and qualified persons.  Landfill gas measurement results in the past twelve months are summarized in Table 8-2.  Moreover, graphical plot are attached in Appendix G.

Table 8-2      Summary of Landfill Gas Measurement Results in this Annual for TD1 & LMR

Para.

Action Level

Limit Level

In Period

Detectable at TD1

Detectable at LMR

Min

Max

Min

Max

Methane

>10% LEL (>0.5% v/v)

>20% LEL (>1% v/v)

Nov 2017 to Jan 2018

0.1%

0.1%

Nil*

Nil*

Feb 2018 to Apr 2018

0.1%

0.1%

0.1%

0.1%

May 2018 to Jul 2018

0.1%

0.1%

0.1%

0.1%

Aug 2018 to Oct 2018

0.1%

0.1%

0.1%

0.1%

Oxygen

<19%

<18%

Nov 2017 to Jan 2018

20.7%

21.1%

Nil*

Nil*

Feb 2018 to Apr 2018

20.8%

21.0%

20.8%

21.0%

May 2018 to Jul 2018

20.8%

21.1%

20.8%

21.0%

Aug 2018 to Oct 2018

20.8%

21.1%

20.8%

21.0%

Carbon Dioxide

>0.5%

>1.5%

Nov 2017 to Jan 2018

0.1%

0.2%

Nil*

Nil*

Feb 2018 to Apr 2018

0.1%

0.2%

0.1%

0.2%

May 2018 to Jul 2018

0.1%

0.2%

0.1%

0.2%

Aug 2018 to Oct 2018

0.1%

0.2%

0.1%

0.2%

Remark*: No monitoring was undertaken at this period

 

8.2.3                 The measurement results shown that slightly methane concentration was detected and all oxygen concentration was measured between 19.2% and 21.1% and Carbon Dioxide was between 0.1 % and 0.2 %.  No corrective action was required accordingly.

 


 

9                             Waste Management

9.1                       General Waste Management

9.1.1                 Waste management was carried out by an on-site Environmental Officer or an Environmental Supervisor from time to time. The effective management of waste arisings during the construction phase will be monitored through the site audit programme. The aims of the waste audit are:

l  to ensure the waste arising from the works are handled, stored, collected, transferred and disposed of in an environmentally acceptable manner; and

l  to encourage the reuse and recycling of material.

 

9.1.2                 In addition to the site inspections, the ET shall review the documentation procedures prepared by the Waste Coordinator once a week to ensure proper records are being maintained and procedures undertaken in accordance with the Waste Management Plan.

 

9.2                       Records of Waste Quantities

9.2.1                 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.

 

9.2.2                 In the past twelve months, total quantities of waste disposal are summarized in Tables 9-1 and 9-2.

Table 9-1      Summary of Quantities of Inert C&D Materials

Type of Waste

Quantity

Total

Disposal Location

Nov 2017 ¡V Jan 2018

Feb 2018 ¡V Apr 2018

May 2018 ¡V Jul 2018

Aug 2018 ¡V Oct 2018

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

1.344

0.413

0.331

0.113

2.201

-

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

2.899

1.272

0.516

0.083

4.770

    TM-CLKL C2 HY/2012/08

    Lam Tei Quarry

    Eco Park K.wah Recycle Facilities

    Lung Kwu Tan Tailor Recycled Aggregates

    Laintang BCP

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

5.237

11.139

5.601

7.524

29.501

Tuen Mum Area 38

 

Table 9-2      Summary of Quantities of C&D Wastes

Type of Waste

Quantity

Total

Disposal Location

Nov 2017 ¡V Jan 2018

Feb 2018 ¡V Apr 2018

May 2018 ¡V Jul 2018

Aug 2018 ¡V Oct 2018

Recycled Metal (`000kg)

0

0

0

0

0

-

Recycled Paper / Cardboard Packing (`000kg)

0

0

0

0

0

-

Recycled Plastic (`000kg)

0

0

0

0

0

-

Chemical Wastes (`000kg)

0

0.040

0

0.040

0.080

Licensed collector

General Refuses (`000m3)

1.543

0.493

0. 542

0.681

3.259

WENT

 

9.2.3                 Whenever possible, materials were reused on-site as far as practicable.

10                         Inspection and Auditing

10.1                   Site Inspection

10.1.1             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.

 

Findings / Deficiencies During Reporting Period

10.1.2             In the past twelve months, total 52 events of joint site inspection to evaluate site environmental performance has been carried out by the RE, ET and the Contractor.  Moreover, IEC or ENPO attended total 14 occasion¡¦s joint site inspection.  The quantity of reminders/observations is summarized in Table 10-1.

Table 10-1         Summary of Reminders/Observations of Site Inspection for the Annual

Reporting Period

Date of site inspection

Nos. of findings / reminders

Follow-Up Status

November 2017

7th, 14th, 21st and 28th November 2017

5

Completed

December 2017

5th, 12th, 21st and 27th December 2017

8

Completed

January 2018

2nd, 9th, 16th, 23rdand 30th January 2018

5

Completed

February 2018

6th, 13th, 20thand 27th February 2018

6

Completed

March 2018

6th, 13th, 20thand 27th March 2018

6

Completed

April 2018

3rd, 10th, 17thand 24th April 2018

8

Completed

May 2018

2nd, 8th, 15th, 23rd and 30th May 2018

8

Completed

June 2018

5th, 13th, 19th and 26th June 2018

9

Completed

July 2018

3rd, 11th, 17th, 24th and 31st July 2018

12

Completed

August 2018

7th, 14th, 21st and 28th August 2018

14

Completed

September 2018

4th, 11th, 18th and 26th September 2018

6

Completed

October 2018

2nd, 10th, 16th, 23rd and 30th October 2018

10

Completed

 

10.1.3             In the past twelve months, there are no non-compliance recorded, however, 97 observations/ reminders were recorded during the site inspections.  The minor deficiencies found in the weekly site inspections were in general rectified within the specified deadlines.  The environmental performance of the Project was therefore considered satisfactory.

 

 

 

 

 


11                         Environmental Complaint and Non-compliance

11.1                   Environmental Complaint, Summons and Prosecution

11.1.1             For the Contract, no summons and prosecution was received in the Reporting Period.  However, there are one environmental complaint and 36 exceedances of action / limit levels recorded during the Reporting Period.  The statistical summary table of environmental exceedance, complaint, summons and prosecution is presented in Tables 11-1, 11-2, 11-3 and 11-4.

Table 11-1    Statistical Summary of Environmental Exceedance

Reporting Period

Environmental Aspect

Exceedance Statistics

Action

Limit

1 November 2017 ¡V

31 October 2018

Air Quality

1-hour TSP

29

2

24-hour TSP

2

3

Landfill Gas

Methane

0

0

Oxygen

0

0

Carbon Dioxide

0

0

Table 11-2    Statistical Summary of Environmental Complaints

Reporting Period

Complaint Nature

Total Registered

Water Quality

Construction Dust

Construction Noise

Others

1 November 2017 ¡V

31 October 2018

NA

Ÿ  30 January 2018

Ÿ  30 January 2018

Ÿ 30 January 2018

1

 

Table 11-3    Statistical Summary of Environmental Summons

Reporting Period

Environmental Summons Statistics

Cumulative

Complaint Nature

Air

Noise

Water

1 November 2017 ¡V

31 October 2018

0

NA

NA

NA

 

Table 11-4    Statistical Summary of Environmental Prosecution

Reporting Period

Environmental Prosecution Statistics

Cumulative

Complaint Nature

Air

Noise

Water

1 November 2017 ¡V

31 October 2018

0

NA

NA

NA

 

11.2                   Summary record of all complaints, action and working procedures

11.2.1             During the complaint investigation work, the Contractor was co-operated with the ET in providing all the necessary information and assistance for completion of the investigation. Investigation reports for the complaints have completed by the ET and submitted to all relevant parties and they are summarized in below.

 

Complaint received on 30 January 2018:

A complaint was received from the EPD on 30 January 2018 to complaint that ¡§±ß¤W12ÂI©Î­â±á3ÂI¦Ü5ÂI¡AÂI¸Ñ¤ºªe½XÀYÁÙ¦³¤uµ{­n°µ¡A¤£¬O±ß¤W11ÂI«eÀ³¸Ó¤£¥iµo¥X¾¸­µ¶Ü¡H¦Ó¥B¥i¥HµL­­µo¥ú¡A¤w¸g¬O­â±á¤F¦³³o»Ý­n¶Ü? ¤w¸g¬O­â±á¤F¡A¬°¦ó¶}着Ëݦh¤j¥ú¿O¡H¦Ü©ó¦b¤éÀYÆ[¹î¡A¬°¦ó¤ºªe½XÀY¤Î´ä¯]¿D¤j¾ô¤uµ{¡A¤£¬OÀ³¸Ó§â¨F¥ÛÅx¤ôÁקKªÅ®ð¦Ã¬V¶Ü¡H¬°¦ó¨S¦³¨Ìµ{§ÇÅx¤ô¡A¥O¨F¹ÐÄƨì¤Ùªù½XÀY¡HÁÙ®e¤@²î²î¨F¥ÛÄÆ´­¡H¤Ùªù½XÀYªÅ®ð¦Ã¬V«ü¼Æ¬Æ°ª¡A³o´N¬O­ì¦].¡¨. After the investigation it was concluded that the complaint was project related, the improvement works for dust mitigation had been completed by contractor. The detailed investigation report can be referred to the Monthly EM&A Reports (January 2018) of the contract.

 

Inspection Checklist for Vulnerable to Contaminated Water Discharge

11.2.2             Following the complaint about discharge of milky water to Bufferfuly Beach on 2 September 2015, the Contractor proposed to carry out inspection of wastewater treatment facilities, concerned discharge points, drainage inlets and outlets daily during typhoon or wet season and once per week at dry season. 

 

11.2.3             In addition, specific inspections would also be conducted before and after adverse weather to ensure necessary remedial works would be carried out timely. Should incidental contaminated water discharge be found at the inlet of the associated drainage system, a specific inspection of the relevant drainage pipes would be conducted for traces of deposit, and follow up actions would be taken when necessary.

 

11.2.4             The inspection for vulnerable to contaminated water discharge was conducted by the Contractor daily during wet season (April to October 2018) and weekly during dry season (November 2017 to March 2018). As requested by the EPD, the associated inspection checklist should be presented in the respective Monthly EM&A Report.

 


 

12                         Implementation Status of Mitigation Measures

12.1                   General Requirements

12.1.1             The environmental mitigation measures that recommended in the Environmental Mitigation Measures Implementation Schedule (EMMIS) in the Project EM&A Manual covered the issues of Air Quality, Cultural Heritage, Ecology, Landfill Gas Hazard, Landscape & Visual, Noise, Water and Waste and they are presented in Appendix H.

 

12.1.2             In the past twelve months, environmental mitigation measures generally implemented by the Contract are listed in Table 12-1.

Table 12-1    Environmental Mitigation Measures

Issues

Environmental Mitigation Measures

Air Quality

¡P       Maintain damp / wet surface on access road

¡P       Keep slow speed in the sites

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

¡P       Sprayed water during rock breaking works

¡P       During transportation by truck, materials loaded lower than the side and tail boards, and covered before transport

¡P       Compacted all soil stockpiles

¡P       Part of the exposed slopes covered geotextile net

Cultural Heritage

¡P       Set a buffer zone between the working area and the Grave

¡P       All construction materials and equipment store far from the Grave

¡P       Inspection the Grave to ensure provision mitigation measures effective

Ecology

¡P       Wire fencing provided for temporary protect Pitcher Plants

¡P       Undertake weekly inspection of Pitcher Plants

Landfill Gas Hazard

¡P       Landfill Gas measurement undertake during trench excavation

Water Quality

¡P       Temporary drainage system provide for surface runoff prevent discharge to public area

¡P       Wastewater to be treated by sedimentation tank before discharge.

Noise

¡P       No operation of powered mechanical equipment is allowed during restricted hours from 19:00 to 07:00 on the following day and whole day during Sunday and public holiday without construction noise permit (CNP)

¡P       Keep good maintenance of plants

¡P       The noisy plants or works provide mobile noise barriers

¡P       Shut down the plants when not in use

Waste and Chemical Management

¡P       On-site sorting prior to disposal

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

¡P       Predict required quantity of concrete accurately

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

General

¡P       The site was generally kept tidy and clean.

 

 


13                         Conclusions and Recommendations

13.1                   Conclusions

13.1.1             This is 4rd Annual EM&A Review Report presenting the monitoring results and inspection findings for the Reporting Period from 1 November 2017 to 31 October 2018.

 

13.1.2             In the Reporting Period, total 29 Action Level and 2 Limit Level exceedances of 1-hour TSP were recorded; 2 Action Level and 3 Limit Level exceedance of 24-hour TSP was recorded.

 

13.1.3             Site inspection for landscape and visual was conducted on weekly basis by the Landscape Architect to ensure the compliance of the intended aims of the mitigation measures. Most of the landscape works such as planting was not yet commenced.

 

13.1.4             Landfill gas monitoring was conducted at TD1 & LMR between November 2017 and October 2018 while excavation works was undertaken in the consultation zone by the Safety Officer.  The monitoring results shown no exceedances were triggered.

 

13.1.5             No notifications of summons or successful prosecution were received during the Reporting Period.  However, one complaint about the air quality issue, noise issue and night-time light nuisance was received during the Reporting Period.  Investigations were conducted and the complaint was not project related.

 

13.1.6             Joint site inspection by the RE, ET and CRBC-Kaden JV was carried in accordance with the EM&A Manual.  Moreover, the IEC attended a total of 14 joint site inspections during the Reporting Period.  No non-compliance was recorded during the site inspection but total 97 observations/reminders were recorded in the past twelve months.  All the deficiencies were rectified before next site inspection date.  

 

13.1.7             A total 52 occasions of Pitcher Plant inspection were carried out by the Contractor and ET during the Reporting Period at the final receptor site.  Establishment period for the pitcher plants was completed at the end of September 2016, the join site completion of Establishment period visit with AFCD was undertaken on 23 September 2016 and the final pitcher plants report was submitted to AFCD on early December 2016. Therefore after 23 September 2016, only the integrity of the protection fence was checked to fulfil the EIA requirement. During each inspection, the protection mitigation measures were checking at the final receptor area to make sure no site activities was undertaken inside the protection zone. Besides, no construction activities were observed to be carried out at the surrounding of the final receptor area.  The condition of chain link fence is good and no repair or maintenance is required.

 

13.1.8             For cultural heritage in the past twelve months, the buffer zone between the working area and the Grave was observed and no construction material or equipment was stored nearby.

 

13.2                   Recommendations

13.2.1             The construction phase monitoring programme ensured that any environmental impact to the receivers would be readily detected and timely actions could be taken to rectify any non-compliance.  Assessment and analysis of monitoring results collected demonstrated the environmental acceptability of the Project.  The regular site inspection and waste audit ensured that all the mitigation measures on waste management were effectively implemented.

 

13.2.2             The EM&A programme effectively monitored the environmental impacts from the construction phase of the Project and no particular recommendation was advised for the improvement of the programme.

 

13.2.3             It is considered that the environmental acceptability of the Contract in the past twelve months was satisfactory and acceptable.