Agreement No. CE 20/2004(EP) North East New Territories (NENT) Landfill Extension

 

Monthly Environmental Monitoring and Audit Report (No. 4) – March 2023

2023-04-13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


ET Certification

IEC Verification

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contents

 

Executive Summary. 1

1.       Introduction. 3

2.       Project Information. 5

3.       Air Quality Monitoring. 11

4        Noise Monitoring. 21

5        Water Quality Monitoring. 25

6        Waste Management 34

7        Landfill Gas Monitoring. 35

8        Landscape and Visual 39

9        Cultural Heritage. 40

10      Ecological Monitoring. 41

11      Site Inspection and Audit 42

12      Environmental Non-conformance. 43

13      Implementation Status on Environmental Mitigation Measures. 44

14      Future Key Issues. 45

15      Conclusion. 46

 

Figure

Figure 1

Location of the Project Site

Figure 2

Impact Monitoring Locations

Appendix

Appendix A

Construction Programme

Appendix B

Project Organization Chart & Management Structure

Appendix C

Monitoring Schedule for Reporting Month & Next Month

Appendix D

Calibration Certificates

Appendix E

Monitoring Results

Appendix F

Graphical Presentations

Appendix G

Notification of Environmental Quality Limits Exceedance

Appendix H

Wind Data

Appendix I

Waste Flow Table

Appendix J

Joint Environmental Site Inspection Records

Appendix K

Environmental Mitigation Implementation Schedule (EMIS)

Appendix L

Appendix M

Appendix N

Construction Site Activities

Mitigation Measures of Cultural Landscape Features

Ecological monitoring record

Appendix O

Detail Status of FEP & EP Submission


Executive Summary

Aurecon Hong Kong Limited (Aurecon) was appointed to undertake the role of Environmental Team (ET) and carry out Environmental Monitoring and Audit for the North East New Territories (NENT) Landfill Extension.

 

The construction phase and EM&A programme of the Project commenced on 1 December 2022.

 

This 4th Monthly EM&A Report presents the EM&A works conducted from 1 to 31 March 2023 in accordance with the EM&A Manual.

Summary of Construction Works undertaken during Report Period

The major construction works undertaken during the reporting period include:

-             Material loading and unloading, site traffic

-             Permanent site office foundation works with pouring of concrete

-             Site clearance

-             Installation of permanent fencing

-             Site formation

-             Tree felling

Environmental Monitoring and Audit Progress

A summary of the monitoring activities in this reporting period is listed below:

Items

Times

Date

-      Air Quality Monitoring during normal weekdays at each monitoring station

6 times

2, 8, 14, 20, 25 & 31 March 2023

-      Additional 24-hr TSP Air Quality Monitoring during normal weekdays at AM1

4 times

1, 2, 3 & 4 March 2023

-      Additional 24-hr TSP Air Quality Monitoring during normal weekdays at AM3

5 times

1, 2, 3, 4 & 13 March 2023

-      Construction Noise Monitoring during normal weekdays at each monitoring station

5 times

2, 8, 14, 20 & 31 March 2023

-      Surface Water Quality Monitoring during normal weekdays at each monitoring station

1 time

2 March 2023

-      Landfill Gas Monitoring during normal weekdays for Construction Works

27 times

1 to 4, 6 to 11, 13 to 18, 20 to 25 & 27 to 31 March 2023

-      Post-translocation Monitoring during normal weekdays at recipient site

1 time

20 March 2023

-      Post-transplantation monitoring and audit during normal weekdays for transplanted plants and receptor sites

1 time

20 March 2023

-      Joint Environmental Site Inspection

4 times

6, 13, 20 & 27 March 2023

 

Environmental Exceedance

 

1-hr TSP Monitoring

 

No Action / Limit Level exceedance for 1-hr TSP impact monitoring at AM1, AM2 & AM3 was recorded during the period.

 

24-hr TSP Monitoring

 

2 Action Level & 2 Limit Level Exceedance for 24-hr TSP monitoring at AM1 was recorded during the reporting period. The exceedance was considered likely caused by external sources such as the high level of background air quality in Hong Kong during the monitoring period etc and not project related.

 

No Action / Limit Level exceedance for 24-hr TSP monitoring at AM2 was recorded during the period.

 

3 Action Level Exceedance & 2 Limit Level Exceedance for 24-hr TSP monitoring at AM3 were recorded during the reporting period. The exceedance was considered likely caused by external sources such as the high level of background air quality in Hong Kong during the monitoring period etc and not project related.

 

Noise, Surface Water Quality & Landfill Gas Monitoring

 

No exceedance of the Action and Limit Levels for was recorded at designated monitoring stations during the reporting period.

 

Environmental Non-conformance/Compliant/Summons and Prosecution

 

No non-compliance event and complaint were recorded during the reporting period.

 

No summons/prosecutions were received in this reporting period.

Reporting Change

There was no reporting change in the reporting period.

Future Key Issues

Works to be undertaken in the next month include:

-             Material loading and unloading, site traffic

-             Permanent site office foundation works with pouring of concrete

-             Site clearance

-             Installation of permanent fencing

-             Site formation

-             Tree felling

 

Potential environmental impacts arising from the above construction activities are mainly associated with air quality, construction noise, water quality, waste management, landfill gas monitoring, landscape and visual, cultural heritage and ecology.

1.                  Introduction

1.1.              Background

1.1.1.            The North East New Territories Landfill Extension (the NENTX Project) is located adjacent to the existing North East New Territories (NENT) Landfill at Ta Kwu Ling. The extension site is located in a valley covering mainly the existing NENT Landfill Stockpile and Borrow Area that was formed to the east of the existing landfill as part of the original site development of the landfill, and layout plan shown in Figure 1.

1.1.2.            The NENTX is a designated project. The Environmental Impact Assessment (EIA) Report (AEIAR-111/2007) and an Environmental Monitoring and Audit Manual were approved on 20 September 2007. The project is governed by an Environmental Permit (EP) (EP-292/2007) which was granted on 26 November 2007. A further of EP (FEP) was applied and the FEP (FEP-01/292/2007) was subsequently granted on 28 April 2022.

1.1.3.            In accordance with the requirements specified in Section 2.6 to 2.10 and Section 12.3 of the approved Environmental Monitoring and Audit (EM&A) Manual and Environmental Permit (EP and FEP) condition 3.3, Monthly EM&A report should be submitted to the Director of Environmental Protection (DEP), within 2 weeks after the end of the reporting month. The submissions shall be certified by the Environmental Team (ET) Leader and verified by the Independent Environmental Checker (IEC).

1.1.4.            The construction phase and EM&A programme of the Project commenced on 1 December 2022.

1.2.              Nature, Scale and Scope of the captioned Designated Project

1.2.1            The Nature, Scale and Scope of the captioned Designated Project is presented in Table 1-1.

Table 1-1      Nature, Scale and Scope of the captioned Designated Project

Item(s)

Content

Nature of Designated Project

Construction and operation of a landfill for waste as defined in the “Waste Disposal Ordinance” (Cap. 354)

Scale and Scope of Designated Project

The Project mainly consists of the followings: -

Construction and operation of a landfill extension of about 70 hectares with a target void space of at least 19 million cubic metres on the eastern side of the existing NENT Landfill, including the followings: -

   i.          Site formation and preparation;

  ii.          Installation of liner system;

iii.          Installation of leachate collection, treatment and disposal facilities;

iv.          Installation of gas collection, utilization and management facilities;

  v.          Utilities provisions and drainage diversion;

vi.          Landfilling operation;

vii.          Restoration and aftercare in subsequent stages; and

viii.          Measures to mitigate environmental impacts as well as environmental monitoring and auditing to be implemented.

1.3.              Purpose of this Report

1.3.1.            This is the 4th Monthly EM&A Report which summarises the impact monitoring results and audit findings for the EM&A programme during the reporting period from 01 to 31 March 2023.

1.4.              Structure of the Report

1.4.1.            The structure of the report is as follows:

Section 1 – Introduction

-       details the background, purpose and structure of the report.

Section 2 – Project Information

-       summarises background and scope of the Project, site description, project organization and contact details, construction programme, the construction works undertaken and the status of Environmental Permit(s)/License(s) during the reporting period.

Section 3 – Air Quality Monitoring

-       Construction Dust

Section 4 – Noise Monitoring

Section 5 – Water Quality Monitoring

-       Groundwater Monitoring

-       Surface Water Monitoring

Section 6 – Waste Management

Section 7 – Landfill Gas Monitoring

Section 8 – Landscape and Visual

Section 9 – Cultural Heritage

Section 10 – Ecological Monitoring

Section 11 – Site Inspection and Audit

Section 12 – Environmental Non-Conformance

Section 13 – Implementation Status on Environmental Mitigation Measures

Section 14 – Future Key Issues


2.                  Project Information

2.1.              Construction Activities

2.1.1.            A summary of the major construction activities undertaken in this reporting period is shown in Appendix L. Construction programme is illustrated in Appendix A. Detailed construction

2.2.              Project Organization & Management Structure

2.2.1.            The Project Organization Chart & Management Structure are shown in Appendix B. The key personnel contact information is summarized in Table 2-1.

Table 2-1       Contact Information of Key Personnel

Party

Name

Contact Number

Contractor

(Veolia Environmental Service Hong Kong Ltd.)

Mr. William Wan

2902 5296

Independent Environmental Checker (IEC)

(Meinhardt Infrastructure and Environment Ltd.)

Ms. Claudine Lee

2859 5409

Environmental Team Leader (ETL)

(Aurecon Hong Kong Limited)

Mr. Fredrick Leong

3664 6888

2.3.              Status of Submission required under the FEP & EP during reporting period

2.3.1.            The status of statutory environmental compliance with the EP conditions under the EIAO, submission status under the FEP & EP during reporting period are presented in Table 2-2. The detail status of statutory environmental compliance with the EP conditions under the EIAO, submission status under the FEP & EP for NENTX project are shown in Appendix O.


Table 2-2          Status of Submissions required under the FEP & EP during reporting period

FEP Condition

EP Condition

Submission / Measures

Status

2.1

2.3

Management Organization of Main Construction Companies

Submitted

2.2

2.4

Setting up of Community Liaison Group (CLG)

Community Liaison Group was set up.

2.3

2.5

Submission of EM&A Manual

Submitted

2.5

2.7

Submission of Vegetation Survey (Transplantation Proposal)

Submitted

2.6

2.8

Submission of translocation proposal

Submitted

2.7

2.9

Submission of Transplantation Report and Transplantation Monitoring

Submitted

 8th transplantation monitoring

(20 March 2023)

2.8

2.10

Submission of Translocation Report and Translocation Monitoring

Translocation was carried out and the report submitted.

8th translocation monitoring

(20 Mar 2023)

2.9

2.11

Submission of Detailed Landfill Gas Hazard Assessment Report

Submitted

2.10

2.12

Submission of Waste Management Plan

Submitted

3.2

3.2

Submission of Baseline Monitoring Report

Submitted

2.4.              Status of Environmental Approval Document

2.4.1.            A summary of the relevant valid permits, licences, and/or notifications on environmental protection for this Project since the granting of the EP is presented in Table 2-4.

Table 2-4   Summary of the relevant valid permits, licences, and/or notifications on environmental protection

Permit / Licenses / Notification

Reference

Expiry Date

Remark

Environmental Permit (EP)

EP-292/2007

Throughout the Contract

Permit granted on 26

November 2007

Further Environmental Permit (FEP)

FEP-210/2022

Throughout the Contract

Permit granted on 28

April 2022

Notification of Construction Works as required under Air Pollution Control (Construction Dust) Regulation

 479809

Throughout the Contract

Approved on 13 May 2022

Registration of Waste Producer under Waste Disposal Ordinance

7043692

Throughout the Contract

Approved on 13 April 2022

Registration as Chemical Waste Producer

 

5213-642-P1034-18

Throughout the Contract

Approved on 11 July 2022

Construction Noise

Permit

GW-RN0131-23

13 May 2023

Approved on 9 February 2023

(Cancelled with effect

from 23 March 2023)

Construction Noise

Permit

GW-RN0299-23

22 June 2023

Approved on 21 March 2023

Effluent Discharge License under Water Pollution Control Ordinance

WT00042301-2022

31 October 2027

Approved on 18 October 2022

Variation of Licence (Approved on 7 February 2023)

2.5.              Environmental Monitoring and Audit Progress

2.5.1.            A summary of the monitoring activities in this reporting period is presented in Table2-5.

Table 2-5     Summary of the Monitoring Activities in this reporting period

Items

Times

Date

-      Air Quality Monitoring during normal weekdays at each monitoring station

6 times

2, 8, 14, 20, 25 & 31 March 2023

-      Additional 24-hr TSP Air Quality Monitoring during normal weekdays at AM1

4 times

1, 2, 3 & 4 March 2023

-      Additional 24-hr TSP Air Quality Monitoring during normal weekdays at AM3

5 times

1 to 4 & 13 March 2023

-      Construction Noise Monitoring during normal weekdays at each monitoring station

5 times

2, 8, 14, 20 & 31 March 2023

-      Surface Water Quality Monitoring during normal weekdays at each monitoring station

1 time

2 March 2023

-      Landfill Gas Monitoring during normal weekdays for Construction Works

27 times

1 to 4, 6 to 11, 13 to 18, 20 to 25 & 27 to 31 March 2023

-      Post-translocation Monitoring during normal weekdays at recipient site

1 time

20 March 2023

-      Post-transplantation monitoring and audit during normal weekdays for transplanted plants and receptor sites

1 time

20 March 2023

-      Joint Environmental Site Inspection

4 times

6, 13, 20 & 27 March 2023

 

Air Quality

 

6 sets of 1-hr TSP & 24-hr TSP construction dust measurement were carried out at each monitoring stations during normal weekdays of the reporting period.

 

4 sets of additional 24-hr TSP construction dust measurement were carried out at AM1 from 1 to 4 March 2023.

 

5 sets of additional 24-hr TSP construction dust measurement were carried out at AM3 from 1 to 4, 13 March 2023.

 

No Action / Limit Level exceedance for 1-hr TSP impact monitoring at AM1, AM2 & AM3 was recorded during the period.

 

2 Action Level & 2 Limit Level Exceedance for 24-hr TSP monitoring at AM1 was recorded during the reporting period. The exceedance was considered likely caused by external sources such as the high level of background air quality in Hong Kong during the monitoring period etc and not project related.

 

No Action / Limit Level exceedance for 24-hr TSP monitoring at AM2 was recorded during the period.

 

3 Action Level Exceedance & 2 Limit Level Exceedance for 24-hr TSP monitoring at AM3 were recorded during the reporting period. The exceedance was considered likely caused by external sources such as the high level of background air quality in Hong Kong during the monitoring period etc and not project related.

 

Noise

 

5 sets of 30-minute construction noise measurement were carried out at each monitoring stations during normal weekdays of the reporting period. No exceedance of Action and Limit Levels of construction noise was recorded during the reporting period.

 

Groundwater

 

Site clearance of future landfilling area is in progress. The installation of groundwater monitoring boreholes will be installed after the site formation work of the landfilling area. The target commencement period of groundwater monitoring will be in 2026. No groundwater monitoring is required before the completion of site formation work of the landfilling area.

 

Surface Water Quality

 

1 set of surface water quality measurement were carried out at each monitoring stations during normal weekdays of the reporting period. No exceedance of Action and Limit Levels of surface water quality was recorded during the reporting period

 

Landfill Gas

 

27 sets of landfill gas measurement were carried out at a designated monitoring location during normal weekdays of the reporting period. No exceedance of Action and Limit Levels of landfill gas was recorded during the reporting period.

 

Landscape and Visual

 

All the specified and affected LCAs, LRs and VSRs have been monitored during the reporting period. No exceedance of Action and Limit Levels of landscape and visual was recorded during the reporting period.

 

Cultural Heritage

 

Implementation of the mitigation measures during construction phase of the Project has been monitored through the regular site inspection/audit.

 

Ecology

 

1 set of post-translocation monitoring at recipient site and 1 set of post-transplantation monitoring and audit for transplanted plants and receptor sites during normal weekdays of the reporting period were carried out. Implementation of the mitigation measures during construction phase of the Project has been monitored through the regular site inspection/audit.

 

Environmental Site Inspection

 

ET weekly environmental site inspections were carried out on 6, 13, 20 & 27 March 2023. A joint environmental site inspection was carried out by the representatives of the Employer's Representative (ER), the Contractor, IEC and the ET on 20 March 2023. The Contractor has generally implemented the mitigation measures as recommended.

3.              Air Quality Monitoring

3.1            Construction Dust

3.1.1        Monitoring Requirement

3.1.1.1      In accordance with the EM&A Manual, 1-hr & 24-hr Total Suspended Particulates (TSP) levels should be measured at the designated air quality monitoring stations in every 6 days to ensure that any deteriorating air quality could be readily detected, and timely action shall be undertaken to rectify such situation. For 1-hr TSP monitoring, the sampling frequency of at least three times in every six-days should be undertaken when the highest dust impact occurs. The specific time to start and stop the 24- hr TSP monitoring shall be clearly defined for each location.

3.1.2        Monitoring Parameters, Frequency and Location

3.1.2.1      According to the EM&A Manual, three monitoring stations namely AM(D)1, AM(D)2 and AM(D)3 are selected for the impact monitoring.

 

3.1.2.2      A baseline monitoring plan has been submitted to IEC and EPD on 31 May 2022 including the proposal with justification of change of monitoring locations. Due to limited access to the original monitoring locations at AM(D)1, AM(D)2 and AM(D)3, the adjusted stations at AM1, AM2 and AM3 were agreed with IEC prior to the baseline and impact monitoring. The locations of adjusted dust monitoring locations are shown in Figure 2.

 

3.1.2.3      The detailed monitoring schedule is shown in Appendix C. The locations of dust monitoring stations are shown in Table 3-1. The monitoring parameters, frequency and duration are shown in Table 3-2.

Table 3-1          Locations of Dust Monitoring Stations

Monitoring Station

Representative

for

Monitoring Parameters

AM1

Tung Lo Hang

1-hr and 24-hr TSP

AM2

Heung Yuen Wai

1-hr and 24-hr TSP

AM3

Wo Keng Shan Tsuen

1-hr and 24-hr TSP