Job No.: TCS01062/19

 

 

 

 

 

 

 

 

 

EPD Contract No. EP/SP/86/15

Organic Waste Treatment Facilities Phase 2

 

 

 

 

 

 

 

 

 

Monthly Environmental Monitoring and Audit Report (March 2023)

 

 

 

 

 

 

 

 

Prepared For

 

 

 

 

AJA Joint Venture

 

 

 

 

 

 

 

 

 

 

 

Date

Reference No.

Prepared By

Certified By

13 April 2023

TCS01062/19/600/R0304v2

My signature

Martin Li

(Environmental Consultant)

Tam Tak Wing

(Environmental Team Leader)

 

Version

Date

Remarks

1

12 April 2023

First Submission

2

13 April 2023

Amended as per ER’s and IEC’s comments

 

 

 

 

 

 


 

 

 

 

 

 

 

executive summary

ES01            Environmental Protection Department (hereinafter referred as “EPD”) is the Project Proponent for the Project “Organic Waste Treatment Facilities Phase 2” (hereinafter referred as “the Project”).  The Project is a Designated Project to be implemented under Environmental Permit No. EP-460/2013 (hereinafter referred as “the EP”). In accordance with the Works Contract requirements, the Contractor shall take over the responsibility of the EP.  Based on the requirement, Further Environmental Permit FEP-01/460/2013/A (hereinafter referred as “the FEP”) was applied by AJA Joint Venture (hereinafter referred as “AJAJV”).

ES02            Action-United Environmental Services & Consulting (hereinafter referred as “AUES”) was employed as Environmental Team (hereinafter referred as “ET”) to implement monitoring programmes and as well as the associated duties.

ES03            This is the monthly EM&A report presenting the environmental monitoring results and inspection findings for the reporting period from 1 to 31 March 2023 (hereinafter ‘the Reporting Period’).

Environmental Monitoring and Audit Activities

ES04            Environmental monitoring activities under the EM&A program in this Reporting Period are summarized in the following table.

Table ES-1    Summary of Environmental Monitoring Activities Undertaken in the Reporting Period

Issues

Environmental Monitoring Parameters / Inspection

Sessions

Construction Noise

Leq (30min) Daytime

20

Leq (5min) restricted hours 19:00-07:00 including public holidays and Sundays

32

Inspection / Audit

ET Regular Environmental Site Inspection

5

 

Breach of Action and Limit (A/L) Levels

ES05            No construction noise monitoring exceedance was recorded in this Reporting Period. The statistics of environmental exceedance and investigation of exceedance are summarized in the following table.

Table ES-2    Summary of Environmental Monitoring Parameter Exceedance in the Reporting Period

Environmental Issues

Monitoring Parameters

Action Level

Limit Level

Event & Action

Investigation Results

Corrective Actions

Construction Noise

Leq30min Daytime

0

0

NA

NA

Leq5min Restricted hour

0

0

NA

NA

 

Site Inspection

ES06            In the Reporting Period, weekly joint site inspections to evaluate the site environmental performance had been carried out by the representative of the Consultants, Independent Environmental Checker (IEC), ET and the Contractor on 1, 9, 15, 22 and 29 March 2023.  No non-compliance was recorded during the site inspections.


 

Environmental Complaint

ES07            No environmental complaint was recorded in this Reporting Period for the Project.  The statistics of environmental complaint are summarized in the following table.

Table ES-3    Summary of Environmental Complaint Records in the Reporting Period

Reporting Period

Environmental Complaint Statistics

Related with the Works Contract

Frequency

Cumulative

Complaint Nature

1 – 31 March 2023

0

7

NA

NA

 

Notification of Summons and Successful Prosecutions

ES08            No environmental summons or prosecutions was received in this Reporting Period for the Project.  The statistics of environmental summons or prosecutions are summarized in the following tables.

Table ES-4    Summary of Environmental Summons Records in the Reporting Period

Reporting Period

Environmental Summons Statistics

Related with the Works Contract

Frequency

Cumulative

Complaint Nature

1 – 31 March 2023

0

0

NA

NA

Table ES-5    Summary of Environmental Prosecutions Records in the Reporting Period

Reporting Period

Environmental Prosecution Statistics

Related with the Works Contract

Frequency

Cumulative

Complaint Nature

1 – 31 March 2023

0

0

NA

NA

 

Reporting Change

ES09            No reporting change was made in this Reporting Period.

 

Future Key Issues

ES10            Construction noise would be a key environmental issue during construction work of the Project.  Noise mitigation measures such as using quiet plants and noise barriers should be implemented in accordance with the EM&A requirement.

 

ES11            In addition, all effluent discharge from the construction site shall fulfill the discharge licence stipulation.


Table of Contents

1.    INTRODUCTION   1

1.1            Project Background   1

1.2            Report Structure  1

2.    PROJECT ORGANIZATION AND CONSTRUCTION PROGRESS  2

2.1            Project Organization and Construction Progress  2

2.2            Construction Progress  3

2.3            Summary of Environmental Submissions  4

3.    SUMMARY OF IMPACT MONITORING REQUIREMENTS  5

3.1            Monitoring Parameters  5

3.2            Monitoring Locations  5

3.3            Monitoring Frequency and Period   5

3.4            Monitoring Equipment  5

3.4.2         Equipment used for construction noise monitoring is listed in Table 3-3. 6

3.5            Monitoring Methodology   6

3.6            Action/Limit (A/L) Levels  6

3.7            Data Management and Data QA/QC Control  7

4.    CONSTRUCTION NOISE MONITORING   8

4.1            General  8

4.2            Results of Noise Monitoring   8

5.    WASTE MANAGEMENT   10

5.1            General Waste Management  10

5.2            Records of Waste Quantities  10

6.    Site Inspection   11

6.1            requirements  11

6.2            Findings / Deficiencies During the Reporting Period   11

7.    Environmental Complaint, Notifications of Summons and Successful Prosecutions  12

7.1            Environmental Complaint, Summons and Prosecution   12

8.    Environmental Mitigation Implementation Schedule   13

8.1            General Requirements  13

8.2            Tentative Construction Activities in the Coming Month   13

9.    Conclusions and Recommendations  14

9.1            Conclusions  14

9.2            Recommendations  14

 


List of TABLES

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

Table 3-1        Summary of EM&A Requirements

Table 3-2        Impact Monitoring Stations - Construction Noise

Table 3-3        Construction Noise Monitoring Equipment

Table 3-4        Action and Limit Levels for Construction Noise

Table 4-1        Daytime Construction Noise Impact Monitoring Results at N1

Table 4-2        Daytime Construction Noise Impact Monitoring Results at N2a

Table 4-3        Daytime Construction Noise Impact Monitoring Results at N3a

Table 4-4        Daytime Construction Noise Impact Monitoring Results at N4

Table 4-5       Additional Noise Impact Monitoring Results during Restricted Hours at N1

Table 4-6        Additional Noise Impact Monitoring Results during Restricted Hours at N2A

Table 4-7        Additional Noise Impact Monitoring Results during Restricted Hours at N3A

Table 4-8        Additional Noise Impact Monitoring Results during Restricted Hours at N4

Table 5-1        Summary of Quantities of Inert C&D Materials

Table 5-2        Summary of Quantities of C&D Wastes

Table 6-1        Site Observations during the Weekly Inspection

Table 7-1        Statistical Summary of Environmental Complaints

Table 7-2        Statistical Summary of Notification of Summons

Table 7-3        Statistical Summary of Successful Prosecution

Table 8-1       Environmental Mitigation Measures

 

List of Appendices

Appendix A    Layout Plan of the Project

Appendix B    Organization Chart

Appendix C    Monitoring Locations for Impact Monitoring

Appendix D   3-Month Rolling Construction Programme

Appendix E    Event and Action Plan

appendix F    Impact Monitoring Schedule of the Reporting Period and Coming Month

Appendix G   Calibration Certificates of Equipment

Appendix H   Database of Monitoring Results

Appendix I     Graphical Plots of Monitoring Results

Appendix J    Waste Flow Table

Appendix K    Environmental Mitigation Implementation Schedule

 

 


1.          INTRODUCTION

1.1  Project Background

1.1.1        Environmental Protection Department (hereinafter referred as “EPD”) is the Project Proponent for the Project “Organic Waste Treatment Facilities Phase 2” (hereinafter referred as “the Project”).  The Project is a Designated Project to be implemented under Environmental Permit No. FEP-460/2013 (hereinafter referred as “the EP”). The major construction work of the Project included:

(i)            Demolition and removal of the existing above ground structures of the Sha Ling Livestock Waste Composting Plant (SLCP);

(ii)          Construction of superstructure for an administration building and enclosed waste reception area;

(iii)        Installation of treatment facilities including waste pre-treatment equipment, digesters, biogas holding tanks, granulator/granulation building, wastewater treatment, air treatment systems; and

(iv)        Facilities for biogas processing, utilization and transmission;

 

1.1.2        AJA Joint Venture (hereinafter referred as “AJAJV”) has been awarded the EPD Contract No. EP/SP/86/15 “Organic Waste Treatment Facilities Phase 2”.  In accordance with the Works Contract requirements, AJAJV shall take over the responsibility of the EP.  Based on the requirement, Further Environmental Permit application was submitted by AJAJV to EPD on 10 September 2019 and granted on 2 October 2019.  A variation of Further Environmental Permit was granted on 14 September 2020. The Further Environmental Permit is named as FEP-01/460/2013/A (hereinafter referred as “the FEP”).

1.1.3        According to the approved Environmental Monitoring and Audit Manual (hereinafter referred as “the EM&A Manual”), AJAJV employed Action-United Environmental Services & Consulting (hereinafter referred as “AUES”) as Environmental Team (hereinafter referred as “ET”) to implement monitoring programme and as well as the associated duties.

1.1.4        According to the EM&A Manual, construction noise was identified as the only key environmental issue during the construction phase of the Project and it is required to carry out construction noise monitoring throughout the construction phase.  Furthermore, baseline noise monitoring as part of the EM&A programmes shall be conducted prior to the commencement of the construction works under the Project.  Thus, baseline noise monitoring was conducted by ET from 25 September 2019 to 8 October 2019. The baseline monitoring report compiled by the ET was verified by Independent Environmental Checker (hereinafter the “IEC’) and was submitted to EPD on 19th November 2019 for endorsement.

1.1.5        The Project works was commenced on 3rd December 2019.  This is the 40th EM&A monthly report presenting the construction noise monitoring results and site inspection findings from 1 to 31  March 2023 (hereinafter the “Reporting Period”).

1.2  Report Structure

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

Section 1          Introduction

Section 2          Project Organization and Construction Progress

Section 3          Summary of Impact Monitoring Requirements

Section 4          Construction Noise Monitoring

Section 5          Waste Management

Section 6          Site Inspections

Section 7          Environmental Complaints and Non-Compliance

Section 8          Implementation Status of Mitigation Measures

Section 9          Conclusions and Recommendations


2.       PROJECT ORGANIZATION AND CONSTRUCTION PROGRESS

2.1    Project Organization and Construction Progress

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

 

Engineer or Engineers Representative (ER)

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

·           to monitor the Contractor’s compliance with Contract Specifications, including the effective implementation and operation of the environmental mitigation measures;

·           to employ an Independent Environmental Checker (IEC) to audit the results of the EM&A works carried out by the Environmental Team (ET);

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

·           to facilitate ET’s implementation of the EM&A programme;

·           participate in joint site inspection by the ET and IEC;

·           to oversee the implementation of the agreed Event / Action Plan in the event of any exceedance; and,

·           to adhere to the procedures for carrying out complaint investigation.

 

The Contractor

2.1.3        The Contractor should report to the ER. The duties and responsibilities of the Contractor include:

·           to comply with the relevant contract conditions and specifications on environmental protection;

·           to employ an ET to undertake monitoring, laboratory analysis and reporting of EM&A;

·           to facilitate ET’s monitoring and site inspection activities;

·           to participate in the site inspections undertaken by the ET and IEC, and undertake any corrective actions;

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

·           to submit proposals on mitigation measures in case of exceedance of Action and Limit levels in accordance with the Event / Action Plans;

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

·           to adhere to the procedures for carrying out complaint investigation.

 

Environmental Team (ET)

2.1.4        The ET will be led and managed by the ET Leader.  ET Leader should have relevant professional qualifications in environmental control and possess at least 7 years of experience in EM&A. Suitably qualified staff should be included in the ET, and resources for the implementation of the EM&A programme should be allocated in the time under the Contract, to enable fulfilment of the Project’s EM&A requirements as specified in the EM&A Manual during construction of the Project. The ET should report to Project Proponent and the duties should include:

·           to monitor and audit various environmental parameters as required in this EM&A Manual;

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

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

·           to audit environmental conditions on site;

·           to report on the environmental monitoring and audit results to EPD, the ER, the IEC and Contractor or their delegated representatives;

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

·           to liaise with the IEC on all environmental performance matters, and ensure timely submission of all relevant EM&A pro forma for IEC’s approval;

·           to provide advice to the Contractor on environmental improvement, awareness and enhancement matters, etc on site;

·           to adhere to the procedures for carrying out complaint investigation;

·           to prepare reports on the environmental monitoring data and the site environmental conditions;

·           to submit the EM&A report to Director of Environmental Protection (DEP) timely;

·           to review proposals of mitigation measures from the Contractor in case of exceedance of Action and Limit levels, in accordance with Event and Action Plan; and,

·           to carry out site inspection to investigate and audit the Contractor’s site practice, equipment and work methodologies with respect to pollution control and mitigation measures.

 

Independent Environmental Checker (IEC)

2.1.5        The IEC is empowered to audit the environmental performance of construction, but is independent from the management of construction works.  As such, the IEC should not be in any way an associated body of the Contractor or the ET for the Project. The IEC should be a person who has relevant professional qualifications in environmental control and at least 7 years’ experience in EM&A and environmental management. The duties and responsibilities of the IEC are:

·           to provide proactive advice to the ER on EM&A matters related to the project;

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

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

·           to check compliance with the agreed Event / Action Plan in the event of any exceedance;

·           to check compliance with the procedures for carrying out complaint investigation;

·           to check the effectiveness of corrective measures;

·           to feedback audit results to the ET by signing off relevant EM&A pro forma;

·           to check that mitigation measures are effectively implemented;

·           to report the works conducted, and the findings, recommendations and improvements of the site inspections, after reviewing ET’s and Contractor’s works, to the ER on a monthly basis;

·           to verify the investigation result of the environmental complaint cases and the effectiveness of corrective measures;

·           to verify EM&A report that has been certified by ET leader; and,

·           to audit EIA recommendations and requirements against the status of implementation of environmental mitigation measures on site.

 

2.2     Construction Progress

2.2.1        3-month rolling construction program of the Project is enclosed in Appendix D; and the major construction activities undertaken in the Reporting Period is presented as below:

Ÿ   Granulation Building – Pre E&M installation ABWF at CHP Area

Ÿ   Reception Building – Skylight installation

Ÿ   AD Tanks – AD1 & AD3 Mass fill tank; AD 4 steel stair tower installation

Ÿ   Footbridge – ABWF Erecting bamboo scaffolding

Ÿ   Sitewide underground utilities work –at Portion 1, 2, 3, 4, 5, 6, 7

Ÿ   Master Meter Room – Structure construction

 

 

 

2.3    Summary of Environmental Submissions

2.3.1        Summary of the relevant permits, licenses, and/or notifications on environmental protection for the Project of contract 1 are presented in Tables 2-1.

 

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

Item

Description

License/Permit Status

Permit no./ account no./ Ref. no.

Valid Period

Status

From

To

1

Notification pursuant to Air pollution Control (Construction Dust) Regulation

Application No. 448863

9 Sep 2019

NA

Valid

2

Chemical Waste Producer Registration

Ref. No. 5211-641-A2957-01

9 Oct 2019

NA

Valid

3

Water Pollution Control Ordinance - Discharge License

Application No. 448913

--

--

Application made on 10 Sep 2019

4

Waste Disposal Regulation - Billing Account for Disposal of Construction Waste

Account No. 7035307

2 Oct 2019

NA

Valid

5

Further Environmental Permit

FEP-01/460/2013/A

14 Sep 2020

NA

Valid

6

 

Construction Noise Permit

GW-RN1254-22

6 Jan 2023

5 Apr 2023

Valid

7

Waste Water Discharge License

WT00035196-2019

20 Mar 2020

31 Mar 2025

Valid

 


3.      SUMMARY OF IMPACT MONITORING REQUIREMENTS

 

3.1    Monitoring Parameters

3.1.1        According to Environmental Monitoring and Audit requirements set out in the Approved EM&A manual, construction noise was identified as the only key environmental issues during the construction phase of the Project.

 

3.1.2        The construction noise monitoring requirement stated in the approved EM&A Manual is summarized in Table 3-1.

Table 3-1           Summary of EM&A Requirements

Environmental Issue

Parameters

Noise

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

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

Ÿ  Leq(5min) if construction works are extended to restricted hours 19:00-07:00 including public holidays and Sundays

 

3.2     Monitoring Locations

3.2.1        According to the EM&A Manual Section 4.2.3, four (4) designated noise sensitive receivers (NSR) were recommended as construction noise monitoring stations. Since two of the designated monitoring locations N2 and N3 were found not accessible, alternative monitoring locations N2a and N3a were therefore proposed for the noise monitoring and were approved by EPD on 1 June 2021.  Details of the locations for construction noise monitoring in the Reporting Period is listed in Table 3-2 and showed in Appendix C.

Table 3-2           Impact Monitoring Stations – Construction Noise

ID

Location

N1

Village House No. 308, Sha Ling

N2a

Village House No. 318, Sha Ling

N3a

Village House No. 261, Sha Ling

N4

Village House in Sha Ling

 

 

3.3      Monitoring Frequency and Period

3.3.1        Noise monitoring shall be conducted at the all available designated monitoring stations or alternative locations.  The monitoring frequency shall depend on scale of the construction activities.  According to EM&A manual, regular noise monitoring should be carried out once a week when noise generating activities are underway and the monitoring requirement is presented below:

Ÿ   one set of Leq(30min) measurements between 07:00 and 19:00 hours on normal weekdays

 

3.3.2        If construction works are extended to restricted hours 19:00-07:00 in normal working days (Monday to Saturday), and 00:00-24:00 during public holidays including Sunday, additional weekly impact monitoring should be carried out during the respective restricted hour periods. Leq(5min) measurements should be employed during the restricted hours.

 

3.4      Monitoring Equipment

3.4.1        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.

 

3.4.2        Equipment used for construction noise monitoring is listed in Table 3-3.

Table 3-3           Construction Noise Monitoring Equipment

Equipment

Model

Integrating Sound Level Meter

Rion NL-52

Calibrator

Rion NC-73

Portable Wind Speed Indicator

Anemometer AZ Instrument 8908 Wind Speed Indicator

 

3.5     Monitoring Methodology

3.5.1        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 throughout the construction period.

 

3.5.2        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.

 

3.5.3        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.

 

3.5.4        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.

 

3.5.5        The sound level meter and calibrator are calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme at yearly basis. Calibration certificates of all the noise monitoring equipment used for the impact monitoring program will be provided in each EM&A Monthly Report.

 

3.6     Action/Limit (A/L) Levels

3.6.1        Action and Limit levels for construction noise as stipulated in the approved Environmental Monitoring and Audit Manual are listed in Tables 3-4.

 

Table 3-4           Action and Limit Levels for Construction Noise

Monitoring Location

Action Level

Limit Level in dB(A)

Time Period:

0700-1900 hours on normal weekdays

N1

When one or more documented complaints are received

75 dB(A)

N2a

N3a

N4

Time Period:

19:00-07:00 in normal working days (Monday to Saturday), and 00:00-24:00 during public holidays including Sunday

N1

When one or more documented complaints are received

60 dB(A)

N2a

N3a

N4

Note:         If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the Noise Control Authority should be followed.

 

5.         

3.6.2        Should non-compliance of the environmental quality criteria occur, remedial actions will be triggered according to the Event and Action Plan presented in Appendix E.

 

3.7      Data Management and Data QA/QC Control

3.7.1   All monitoring data will be handled by the ET’s in-house data recording and management system.  The monitoring data recorded in the equipment will be downloaded directly from the equipment at the end of each monitoring day.  The downloaded monitoring data will be input into a computerized database properly maintained by the ET. 


4.          CONSTRUCTION NOISE MONITORING

4.1    General

4.1.1        In the Reporting Period, construction noise monitoring was performed at monitoring location N1, N2a, N3a and N4. Additional weekly noise monitoring during restricted hours were also performed due to construction works were carried out during public holiday including Sunday.  The noise monitoring schedule is presented in Appendix F.

 

4.1.2        Valid calibration certificates of monitoring equipment are shown in Appendix G and the construction noise monitoring results are summarized in the following sub-sections.

 

4.2  Results of Noise Monitoring

4.2.1     20 sessions of daytime construction noise monitoring and 32 sessions of additional weekly monitoring during restricted hours were performed at the agreed monitoring locations in the reporting period.  Since the noise measurement was made under free field condition, a façade correction of +3dB(A) was added according to acoustical principles and EPD guidelines. For the approved alternative monitoring locations N2a and N3a, an additional distance correction of +1 dB(A) and +3 dB(A) respectively were applied. The daytime noise monitoring results are summarized in Table 4-1 to Table 4-4 and the noise monitoring result during restricted hours are summarized in Table 4-5 to Table 4-8.  The detailed noise monitoring data are presented in Appendix H and the relevant graphical plots are shown in Appendix I.

Table 4-1           Daytime Construction Noise Impact Monitoring Results at N1

Date

Time of Starting

Time of Finishing

Measurement Result (dB(A))

Leq30min

1-Mar-23

9:19

9:49

65.1

7-Mar-23

9:30

10:00

61.8

13-Mar-23

13:16

13:46

61.3

24-Mar-23

9:17

9:47

61.8

30-Mar-23

9:15

9:45

63.4

Table 4-2           Daytime Construction Noise Impact Monitoring Results at N2a

Date

Time of Starting

Time of Finishing

Measurement Result (dB(A))

Leq30min

1-Mar-23

10:03

10:33

55.9

7-Mar-23

10:05

10:35

54.7

13-Mar-23

13:51

14:21

58.0

24-Mar-23

9:54

10:24

52.4

30-Mar-23

9:55

10:25

55.2

Table 4-3           Daytime Construction Noise Impact Monitoring Results at N3a

Date

Time of Starting

Time of Finishing

Measurement Result (dB(A))

Leq30min

1-Mar-23

11:29

11:59

66.7

7-Mar-23

11:18

11:48

68.1

13-Mar-23

15:16

15:46

72.6

24-Mar-23

14:07

14:37

69.2

30-Mar-23

11:15

11:45

70.6

Table 4-4         Daytime Construction Noise Impact Monitoring Results at N4

Date

Time of Starting

Time of Finishing

Measurement Result (dB(A))

Leq30min

1-Mar-23

10:46

11:16

61.4

7-Mar-23

10:40

11:10

64.3

13-Mar-23

14:28

14:58

65.6

24-Mar-23

13:24

13:54

64.1

30-Mar-23

10:35

11:05

64.0

Table 4-5           Additional Noise Impact Monitoring Results during Restricted Hours at N1

Date

Time of Starting

Time of Finishing

Measurement Result (dB(A))

Leq5min

3-Mar-23

20:26

20:31

49.7

5-Mar-23

9:48

9:53

49.2

9-Mar-23

20:01

20:06

51.0

12-Mar-23

9:57

10:02

57.4

17-Mar-23

20:17

20:22

47.0

19-Mar-23

9:58

10:03

55.8

23-Mar-23

19:53

19:58

58.9

27-Mar-23

19:31

19:36

58.9

Table 4-6           Additional Noise Impact Monitoring Results during Restricted Hours at N2a

Date

Time of Starting

Time of Finishing

Measurement Result (dB(A))

Leq5min

3-Mar-23

19:58

20:03

52.6

5-Mar-23

9:25

9:30

52.2

9-Mar-23

19:38

19:43

52.0

12-Mar-23

9:33

9:38

52.7

17-Mar-23

19:49

19:54

49.1

19-Mar-23

9:25