Table of Contents
Page No. | ||
EXECUTIVE SUMMARY | ||
Introduction | 5 | |
Environmental Monitoring and Audit Progress | 5 | |
Breaches of Action and Limit Levels | 5 | |
Construction Noise | 5 | |
Air Quality | 6 | |
Ecological Monitoring | 6 | |
Environmental Non-Compliance | 6 | |
Environmental Complaint | 6 | |
Notification of Summons and Successful Prosecutions | 6 | |
Reporting Changes | 6 | |
Future Key Issues | 6-7 | |
INTRODUCTION | ||
Purpose of the report | 8 | |
Structure of the report | 8 | |
2 | PROJECT INFORMATION | |
Background | 9 | |
Project Organization | 9-10 | |
Summary of Construction Works Undertaken During Reporting Month | 10 | |
Construction Programme | 10 | |
Status of Environmental Licences, Notifications and Permits | 10-11 | |
Summary of EM&A Requirement | 11 | |
Status of Compliance with Environmental Permits Conditions | 11-12 | |
3 | NOISE MONITORING | |
Monitoring Requirements | 13 | |
Monitoring Location | 13 | |
Monitoring Equipment | 13 | |
Monitoring Parameters, Frequency and Duration | 14 | |
Monitoring Methodology and QA/QC Procedures | 14-15 | |
Maintenance and Calibration | 15 | |
Results and Observations | 15-16 | |
Event and Action Plan | 16 | |
4 | AIR QUALITY MONITORING | |
Monitoring Requirements | 17 | |
Monitoring Location | 17 | |
Monitoring Equipment | 17-18 | |
Monitoring Parameters, Frequency and Duration | 18 | |
Monitoring Methodology and QA/QC Procedure | 18-19 | |
Results and Observations | 19-20 | |
Event and Action Plan | 20 | |
5 | LANDSCAPE AND VISUAL MONITORING | |
Monitoring Requirements | 21 | |
6 | ECOLOGICAL MONITORING | |
Monitoring of Flora Species of Conservation Interest | 22 | |
Post-Transplantation Monitoring and Maintenance Programme | 22-23 | |
Results and Observations | 23-24 | |
Precautionary Measure for Butterfly Species of Conservation Interest | 24 | |
Precautionary Measures to Minimize Indirect Disturbance on Ecology | 24 | |
7 | ENVIRONMENTAL SITE INSPECTION | |
Site Audits | 25-26 | |
Implementation Status of Environmental Mitigation Measures | 26 | |
Solid and Liquid Waste Management Status | 26 | |
8 | ENVIRONMENTAL NON-CONFORMANCE | |
Summary of Exceedances | 27 | |
Summary of Environmental Non-Compliance | 27 | |
Summary of Environmental Complaint | 27 | |
Summary of Environmental Summon and Successful Prosecution | 27 | |
9 | FUTURE KEY ISSUES | |
Key Issues in the Coming Three Months | 28-29 | |
Monitoring Schedule for the Next Month | 29 | |
10 | CONCLUSIONS AND RECOMMENDATIONS | |
Conclusions | 30 | |
Recommendations | 30-31 |
LIST OF TABLES
Table I Summary Table for EM&A Activities in the Reporting Month
Table II Summary Table for Events Recorded in the Reporting Month
Table 2.1 Key Contacts of the Project
Table 2.2 Status of Environmental Licences, Notifications and Permits (Contract No. SSK509)
Table 2.3 Summary Table for Status of Compliance / Required Submission
Table 3.1 Location for Noise Monitoring Stations
Table 3.2 Noise Monitoring Equipment
Table 3.3 Noise Monitoring Parameters, Duration and Frequency
Table 3.4 Summary Table of Noise Monitoring Results during the Reporting Month
Table 3.5 Observation at Noise Monitoring Stations
Table 4.1 Location for Air Quality Monitoring Locations
Table 4.2 Air Quality Monitoring Equipment
Table 4.3 Impact Dust Monitoring Parameters, Frequency and Duration
Table 4.4 Summary Table of 1-hour TSP Monitoring Results during the Reporting Month
Table 4.5 Observation at Dust Monitoring Stations
Table 7.1 Observations and Recommendations of Site Audit
LIST OF FIGURES
Figure 1 Site Layout Plan
Figure 2 Location of Air Quality Monitoring Stations
Figure 3 Location of Noise Monitoring Stations
LIST OF APPENDICES
Appendix A Construction Programme and Proactive Environmental Protection Proforma
Appendix B Action and Limit Levels
Appendix C Copies of Calibration Certificates
Appendix D Environmental Monitoring Schedules
Appendix E Air Quality Monitoring Results and Graphical Presentation
Appendix F Noise Monitoring Results and Graphical Presentation
Appendix G Weather Condition
Appendix H Ecological Monitoring Records
Appendix I Event Action Plans
Appendix J Summary of Exceedance
Appendix K Environmental Mitigation Implementation Schedule (EMIS)
Appendix L Waste Generation in the Reporting Month
Appendix M Complaint Log
Appendix N Summary of Successful Prosecution
Appendix O The potential seriousness of the forthcoming environmental impacts and the use of machineries
Appendix P A List of Machineries Used in Construction Site
Appendix Q Wastewater Discharge Layout Plan
EXECUTIVE SUMMARY
Introduction
E1. This document represents the 18th monthly report detailing the Environmental Monitoring and Audit (EM&A) activities for the Kong Nga Po Police Facilities Project, which operates under Environmental Permit No. FEP-01/510/2016. This report was prepared by Ka Shing Management Consultancy Ltd. (Ka Shing) under “Service Contract Quotation No. PMB202/8480/2022/A01/A Provision of Environmental Team consultancy for Design and Construction of Kong Nga Po Police Training Facilities” (hereinafter called the “Service Contract”). The report encapsulates the EM&A activities and findings carried out between the 1st and 30th of September 2024.
E2. On the 23rd of December 2022, a section of the construction site was transferred to the Architectural Services Department (ArchSD), which assumed responsibility for the building's construction. Furthermore, ArchSD has taken on the role of maintenance agent for the Hong Kong Police Force (HKPF) throughout the operational phase.
E3. In the month covered by this report, the Project of Police Facilities at Kong Nga Po, which operates under Environmental Permit No. FEP-01/510/2016, engaged in the following contractual work: Contract No. SSK509, which encompasses the design and construction of the Kong Nga Po Police Training Facilities.
Environmental Monitoring and Audit Progress
E4. A summary of the EM&A activities in this reporting month is listed in Table I below:
Table I Summary Table for EM&A Activities in the Reporting Month
EM&A Activities | Date |
Noise Monitoring | 02, 13, 19, 25, 30 September 2024 |
Air Quality Monitoring | 02, 07, 13, 19, 25, 30 September 2024 |
Environmental Site Inspection | 2, 10, 17, 25, 30 September 2024 |
Ecological Monitoring | 30 September 2024 |
Landscape & Visual Inspection | 2, 10, 17, 25, 30 September 2024 |
Breaches of Action and Limit Levels
E5. Summary of the environmental exceedances of the reporting month is tabulated in Table II.
Construction Noise
E6. During the reporting month, the planned noise monitoring for construction took place as scheduled, with no recorded incidents of the Action/Limit Levels being exceeded.
Air Quality
E7. Throughout the reporting period, all planned air quality monitoring associated with construction was executed, and there were no recorded instances where the Action/Limit Levels were surpassed.
Table II Summary Table for Events Recorded in the Reporting Month
Environmental Monitoring | Parameter | No. of Non-Project related Exceedances | No. of Exceedance related to the Construction Works of the Contract | Action Taken | ||
Action Level | Limit Level | Action Level | Limit Level | |||
Noise | Leq(30min) | 0 | 0 | 0 | 0 | N/A |
Air Quality | 1-hr TSP | 0 | 0 | 0 | 0 | N/A |
Ecological Monitoring
E8. The ecological monitoring slated for the reporting month was conducted according to schedule. Details of the findings from this ecological monitoring for the respective period are available in Appendix H.
Environmental Non-Compliance
E9. During the reporting month, no environmental compliance violations were documented.
Environmental Complaint
E10. No environmental complaints were recorded during the reporting period. In the event of any complaints, they would be documented in the Complaint Log found in Appendix M.
Notification of Summons and Successful Prosecutions
E11. Throughout the month covered in this report, there were no instances of receiving notifications regarding summons or confirmations of successful prosecutions.
Reporting Changes
E12. On the 23rd of December 2022, a section of the construction site was handed over to the Architectural Services Department (ArchSD). ArchSD has taken on the task of overseeing the construction activities for the building. This Monthly Environmental Monitoring and Audit (EM&A) Report offers a summary of the site operations and the status of the environmental safeguards being implemented under the contract with ArchSD.
Future Key Issues
E13. The major site activities for the coming three months include:
1. Open cut excavation
2. Removal of soil
3. Construction of footings
4. Construction of substructure and superstructure
5. Construction of footbridge
6. Backfilling
7. U.U. Lead in and Pipe Duct Connection
8. MIC installation
E14. The aforementioned construction activities could potentially lead to environmental impacts, with the primary concerns centered around construction dust, noise, water quality, and waste management. For detailed information, please refer to Appendix A regarding the anticipated major impacts from the construction works and corresponding recommended mitigation measures.
1 INTRODUCTION
1.1 The Architectural Services Department (ASD) has commissioned Ka Shing Management Consultancy Ltd. (Ka Shing) as the Environmental Team (ET) to conduct the Environmental Monitoring and Audit (EM&A) activities for the Kong Nga Po Police Facilities Project, as dictated by Environmental Permit No. FEP-01/510/2016.
1.2 The main construction activities for the Project began on the 3rd of July, 2020, and the primary location at Kong Nga Po was handed over to the Architectural Services Department (ASD) on the 23rd of December, 2022. The ASD has assumed control over the building construction tasks and will serve as the maintenance representative for the Hong Kong Police Force (HKPF) once the project is operational.
Purpose of the report
1.3 This document constitutes the 18th EM&A Report, offering a consolidated overview of the monitoring outcomes for impacts and the audit results from the EM&A program over the reporting interval spanning from the 1st to the30th September 2024.
Structure of the report
1.4 The structure of the report is as follows:
Section 1: Introduction
Section 2: Project Information
Section 3: Noise Monitoring
Section 4: Air Quality Monitoring
Section 5: Landscape and Visual Monitoring
Section 6: Ecological Monitoring
Section 7: Environmental Site Inspection.
Section 8: Environmental Non-conformance
Section 9: Future Key Issues
Section 10: Conclusions and Recommendations
2 PROJECT INFORMATION
Background
2.1 The Project mainly includes construction and operation of various police facilities. The police facilities include:
(i) a helipad;
(ii) two firing ranges; and
(iii) other facilities, associated infrastructure & utilities, etc.
2.2 The Project falls under the category of a Designated Project as defined by the Environmental Impact Assessment Ordinance (EIAO). In October 2016, an Environmental Impact Assessment (EIA) Report (Report No.: AEIAR-201/2016) was approved for the Project in accordance with the EIA Study Brief (No. ESB-276/2014) and the Technical Memorandum on Environmental Impact Assessment Process (EIAO-TM). The corresponding Environmental Permit (EP no.: FEP-01/510/2016) was issued by the Director of Environmental Protection (DEP).
2.3 As per the approved Environmental Monitoring and Audit (EM&A) Manual, a comprehensive air quality and noise monitoring program is recommended during the construction phases of the Project to assess and monitor potential dust and noise nuisances. Prior to the commencement of the Project's construction works, baseline air quality and noise monitoring were conducted by the previous Environmental Team (Wellab Limited) from 14th March, 2020, to 2nd April, 2020, to establish the pre-existing conditions at designated sensitive receivers.
2.4 Figure 1 displays the site layout plan for the Project.
Project Organization
2.5 Various stakeholders with varying degrees of participation are part of the Project's organizational structure under Environmental Permit number: FEP-01/510/2016, which includes:
Project Proponent – Architectural Services Department (ArchSD)
Contractor– China State JV
Environmental Team (ET) – Ka Shing Management Consultancy Ltd.
Independent Environmental Checker (IEC) – Acuity Sustainability Consulting Limited
2.6 Table 2.1 summarizes the contact information for key personnel associated with Quotation No. PMB202/8480/2022/A01/A and additional contacts linked with the ArchSD Contract No. SSK509.
Table 2.1 Key Contacts of the Project
Party | Role | Contact Person | Phone No. | Fax No. |
Architectural Services Department | Project Proponent | Mr. Vincent Kwok | 2867 3939 | 3542 5223 |
Contractor (China State JV) | Site Agent | Mr. Kelvin Chan | 6272 8828 | 2866 6325 |
Environmental Officer | Ms. Marian Kong | 6174 9735 | ||
Mr. LuLu Mar | 5998 8852 | |||
Ka Shing Management Consultancy Ltd. | ETL | Mr. W.H. Lee | 2618 2166 | 2120 7752 |
Acuity Sustainability Consulting Limited | IEC | Ir. Y.H. Law | 2698 6833 | 2698 9383 |
Summary of Construction Works Undertaken During Reporting Month
2.7 Significant site activities conducted on-site during the reporting month comprised:
1. Open cut excavation
2. Removal of soil
3. Construction of footings
4. Construction of substructure and superstructure
5. Construction of footbridge
6. Backfilling
7. U.U. Lead in and Pipe Duct Connection
Construction Programme
2.8 Appendix A contains a version of the Contractors' construction schedules. The primary site activities planned by the Contractor for the upcoming three months have been examined. In Appendix O, the expected environmental impacts' potential severity and the deployment of equipment have been evaluated. This appendix additionally provides the Contractor with recommendations and insights on alternative approaches aimed at raising environmental consciousness, refining practices on the construction site, and fostering environmental improvements.
2.9 Table 2.2 presents a consolidated overview of the pertinent environmental protection permits, licenses, and/or notifications associated with this Project.
Table 2.2 Status of Environmental Licences, Notifications and Permits
Permit / Licence No. | Valid Period | Status | |
From | To | ||
Further Environmental Permit (FEP) | |||
FEP-01/510/2016 | N/A | N/A | Valid |
Construction Noise Permit (CNP) | |||
GW-RN0839-24 | 30-07-2024 | 29-10-2024 | Valid |
Notification pursuant to Air Pollution Control (Construction Dust) Regulation | |||
EPD Ref no.: 487864 | N/A | N/A | N/A |
Billing Account for Construction Waste Disposal | |||
Account No. 7046289 | 18-01-2023 | N/A | Valid |
Registration of Chemical Waste Producer | |||
WPN5213-641-C4770-01 | 18-01-2023 | N/A | Valid |
Effluent Discharge Licence under Water Pollution Control Ordinance | |||
WT00043663-2023 | 21-04-2023 | 30-04-2028 | Valid |
Summary of EM&A Requirement
2.10 The Environmental Monitoring and Audit (EM&A) program includes the monitoring of construction noise, air quality, ecological conditions, and regular environmental site audits. The specific requirements for the EM&A program are outlined in the following sections:
l Environmental requirements in contract documents;
l Event / Action Plans;
l Environmental mitigation measures, as recommended in the Project EIA study final report;
l All monitoring parameters; and
l Action and Limit levels for all environmental parameters.
Status of Compliance with Environmental Permits Conditions
2.11 Table 2.3 provides a summary of the adherence to Environmental Permit (EP) No. FEP-01/510/2016 and the necessary submissions connected to this Project as stipulated by the EP.
Table 2.3 Summary Table for Status of Compliance / Required Submission under FEP No. FEP-01/510/2016
FEP Conditions | Submission | Submission Date | Approval Status |
1.12 | Commencement date of construction of the Project | 30/3/2023 | * |
2.7 | Proposal on the Reporting Mechanism and Curriculum Vitae of the IEC | 20/3/2023 | * |
2.10 | The date of setting up the Community Liaison Hotline and the contact details | 27/2/2023 | * |
2.11 | Management Organization of Main Construction Companies, at least an organization chart, names of responsible persons and their contact details | 10/3/2023 | * |
2.12 | Construction Works Schedule and Location Plans | 10/3/2023 | * |
2.13 | Layout plan for permeable pavings | 29/3/2023 Supplementary information submitted on 23/3/2024 | For approval |
2.14 | Landscape and visual mitigation plan | 26/6/2023 | For approval |
2.16 | Plan for perimeter walls/ boundary wall sat project site and sidewalls of firing range | Submitted on 10/7/2024 and comment from ET on 7/8/2024. R1 submitted on 29/8/2024 and comment from ET on 30/8/2024 | For approval |
2.19 | Submission of Helicopter Flight Plan | 1 month before commencement of operation of Helipad | Notification |
3.3 | Baseline Air Quality and Noise Monitoring Report | 30/3/2023 | Deposit |
4.2 | Internet address of a dedicated web site | 13/4/2023 | * |
Remarks: * Approval not required in FEP-01/510/2016
3 NOISE MONITORING
Monitoring Requirements
3.1 Following the EM&A Manual, monitoring of construction noise was performed by measuring the A-weighted equivalent continuous sound pressure level (Leq) to track noise generated by construction operations. Each monitoring station is scheduled for weekly noise assessments, with one set of readings to be taken from 0700 to 1900 hours on typical weekdays. The predefined Action/Limit Levels for the environmental monitoring activities are presented in Appendix B.
Monitoring Location
3.2 As per Section 3.2.3 of the EM&A Manual, impact noise monitoring took place at fourteen specified noise monitoring stations. Following the guidelines of the Project's Environmental Impact Assessment (EIA) report, noise monitoring stations situated within a 300-meter radius of the Project's boundary were taken into account. Consequently, six noise monitoring stations identified as relevant monitoring locations are depicted in Figure 3. The specific locations of these noise monitoring stations are detailed in Table 3.1.
Table 3.1 Location of Noise Monitoring Stations
Monitoring Station | Location of Measurement |
NM9 | Village House, Kong Nga Po |
NM10 | Village House, Kong Nga Po |
NM11 | Village House, Kong Nga Po |
NM12 | Village House, Kong Nga Po |
NM13 | Village House, Kong Nga Po |
NM14 | Village House, near Man Kam To Road |
Monitoring Equipment
3.3 Impact noise monitoring was carried out using Integrating Sound Level Meters. These meters, classified as Type 1, are capable of providing continuous readings of noise levels, including the equivalent continuous sound pressure level (Leq) and percentile sound pressure level (Lx), and they conform to the specifications of International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1). The noise monitoring equipment utilized is summarized in Table 3.2. The calibration certificates for these devices can be found in Appendix C.
Table 3.2 Noise Monitoring Equipment
Equipment | Model | Quantity |
Sound Level Meter | BSWA 308 | 1 |
Sound Calibrator | ST120 | 1 |
Monitoring Parameters, Frequency and Duration
3.4 Table 3.3 encapsulates the variables monitored, the frequency of monitoring, and the total time span of the noise monitoring activities. The schedule for noise monitoring can be located in Appendix D.
Table 3.3 Noise Monitoring Parameters, Duration and Frequency
Monitoring Stations | Parameter | Duration | Frequency | Measurement |
NM9 | L10(30 min.) dB(A)[2] | 0700-1900 hrs on normal weekdays | Once per week | Free field[1] |
NM10 | Free field[1] | |||
NM11 | Façade | |||
NM12 | Façade | |||
NM13 | Free field[1] | |||
NM14 | Free field[1] |
Remarks:
[1]: Correction of +3dB (A) for Free-field Measurement.
[2]: A-weighted equivalent continuous sound pressure level (Leq). It is the constant noise level which, under a given situation and time period, contains the same acoustic energy as the actual time-varying noise level.
L10 is the level exceeded for 10% of the time. For 10% of the time, the sound or noise has a sound pressure level above L10.
L90 is the level exceeded for 90% of the time. For 90% of the time, the noise level is above this level.
Monitoring Methodology and QA/QC Procedures
3.5 The procedures for noise monitoring were conducted in this manner:
- The sound level meter was mounted on a tripod, positioned 1 meter away from the outside of the noise-sensitive facade and at a height of 1.2 meters above ground level;
- To achieve free field measurement conditions, the meter was placed at a distance from any reflective surfaces, and the measured noise levels were then corrected by adding +3 dB(A);
- The battery's condition was examined to guarantee the proper operation of the meter;
- The settings for parameters like frequency weighting, time weighting, and measurement duration were established as detailed below:
-frequency weighting: A
-time weighting: Fast
-time measurement: Leq(30 min.) dB(A)
- Noise levels were measured as six consecutive Leq, 5-minute readings during the hours when restrictions did not apply (specifically, from 0700 to 1900 hrs on normal weekdays).
- Calibration of the meter was performed before and after each noise measurement session using a Calibrator set to 94.0 dB at 1000 Hz. Should there be a discrepancy greater than 1.0 dB in calibration levels pre- and post-measurement, the data would be deemed invalid. A repeat measurement would then be necessary following recalibration or repair of the equipment.
- Throughout the monitoring period, parameters such as Leq, L90, and L10 were documented. Observations regarding site conditions and noise origins were also noted on a standard recording form.
- Noise measurements were temporarily halted during instances of significant intrusive noise (for example, barking dogs or helicopter sounds), where feasible. An observation record for the measurement period was to be provided.
- Noise monitoring was suspended in conditions of fog, rain, or when wind speeds were consistently above 5 m/s, or during gusts surpassing 10 m/s. Wind speeds were verified using a portable anemometer capable of measuring speed in meters per second (m/s).
Maintenance and Calibration
3.6 Every three months, the microphone head of the sound level meter and the calibrator was gently wiped clean using a soft fabric.
3.7 Annually the sound level meter and calibrator underwent inspection and calibration.
3.8 Before and after conducting each noise measurement, the precision of the sound level meter
must be verified with an acoustic calibrator that produces a set sound pressure level at a specific frequency. Only when the pre- and post-measurement calibration levels are within a 1.0 dB range of each other will the measurements be considered valid.
Results and Observations
3.9 Table 3.4 provides a summary of the noise monitoring outcomes. For an in-depth account and visual depiction of the noise monitoring, refer to Appendix F. A summary of the meteorological data for the reporting period is compiled in Appendix G.
Table 3.4 Summary Table of Noise Monitoring Results during the Reporting Month
Monitoring Station | Average | Range | Baseline Level | Limit Level |
Leq (30 min) dB(A) | Leq (30 min) dB(A) | dB(A) | dB(A) | |
NM9[1] | 53.3 | 47.3 – 63.6 | 55.9 | 75 |
NM10[1] | 52.8 | 47.3 – 60.5 | 52.8 | |
NM11 | 51.0 | 44.0 – 68.4 | 46.4 | |
NM12 | 55.8 | 44.0 – 70.1 | 54.7 | |
NM13[1] | 54.5 | 46.7 – 63.6 | 61.3 | |
NM14[1] | 52.9 | 43.4 – 70.6 | 59.6 |
Remarks: [1]: Correction of +3dB (A) for Free-field Measurement.
3.10 Noise monitoring related to construction activities took place according to the planned schedule for the month reported. There were no instances where the Action/Limit Levels were surpassed. A summary of exceedance records for the reporting month can be found in Appendix J.
3.11 Based on observations made in the field, the primary sources of noise detected at the allocated noise monitoring stations during the reporting month are as outlined below:
Table 3.5 Observation at Noise Monitoring Stations
Monitoring Station | Major Noise Source |
NM9 | Loading & unloading, Road traffic, Excavation works |
NM10 | Loading & unloading, Road traffic, Excavation works |
NM11 | Road traffic |
NM12 | Loading & unloading, Road traffic |
NM13 | Loading & unloading, Road traffic |
NM14 | Dog barking, Road traffic |
Event and Action Plan
3.12 If any non-compliance with the criteria related to the project arises, measures will be taken following the procedures outlined in the Event Action Plan provided in Appendix I.
4 AIR QUALITY MONITORING
Monitoring Requirements
4.1 As per the EM&A Manual, 1-hour Total Suspended Particulates (TSP) monitoring was carried out to keep track of the air quality associated with the Works Contracts. The predetermined Action/Limit Levels for the air quality monitoring activities are detailed in Appendix B.
4.2 Monitoring for 1-hour Total Suspended Particulates (TSP) impacts was performed at a minimum of three times within each six-day period at a designated air quality monitoring station.
Monitoring Location
4.3 In line with Section 2.2.5 of the EM&A Manual, impact air quality monitoring took place at two specified monitoring stations for the Project, as depicted in Figure 2. The positions of the air quality monitoring stations are detailed in Table 4.1.
Table 4.1 Location for Air Quality Monitoring Stations
Monitoring Station | Location of Measurement |
AM1 | Village House, Kong Nga Po |
AM2 | Village House, Kong Nga Po |
Monitoring Equipment
4.4 Due to the denial by local villagers to set up a High-Volume Sampler (HVS) for 1-hour Total Suspended Particulates (TSP) monitoring at the chosen locations and the inability to secure an electricity supply for the HVS, direct-reading dust meters were utilized instead to conduct the 1-hour TSP monitoring. Direct-reading dust meters are widely accepted instruments for measuring 1-hour TSP levels and have been used in the same infrastructure project. The issue to use direct-reading dust meters was presented to the Independent Environmental Checker (IEC). The application of the direct-reading dust meter allows for immediate and straightforward results, facilitating timely EM&A reporting and the execution of the event and action plan. To ensure the validity and accuracy of the readings obtained by the direct-reading method, the HVS performed 1-hour sampling on a bi-monthly schedule.
4.5 Table 4.2 provides a summary of the apparatus employed in the impact air quality monitoring program. Copies of the calibration certificates for the equipment can be found in Appendix C.
Table 4.2 Air Quality Monitoring Equipment
Equipment | Model and Serial No. | Quantity | The valid period is until |
Dust Monitor | AEROCET-831 / D12641 | 1 | 19 October 2024 |
4.6 Weather data was sourced from the "Hong Kong Observatory - General Weather Conditions during the Monitoring Period (September 2024)" detailed in Appendix G, which was used as a substitute approach to acquire representative wind data.
4.7 During the monitoring days, the field staff also documented the prevailing weather conditions, such as whether it was sunny, cloudy, or rainy.
Monitoring Parameters, Frequency and Duration
4.8 Table 4.3 encapsulates the monitoring variables and the regularity of impact dust assessments conducted throughout the Works Contracts operations. The schedule for air quality observation for the month in question is presented in Appendix D.
Table 4.3 Impact Dust Monitoring Parameters, Frequency and Duration
Parameters | Frequency |
1-hr TSP | Three times/ 6 days |
Monitoring Methodology and QA/QC Procedure
1-hour TSP Air Quality Monitoring
Instrumentation
4.9 The air quality monitoring utilized a direct reading dust meter, as indicated in Table 4.2.
4.10 The procedures for operating the dust meter adhere to the guidelines set forth in the Manufacturer’s Instruction Manual, as described below:
-The 1-hour dust meter is placed at least 1.3 meters above ground.
-Press and hold the Power key momentarily to power on the unit and make sure that the battery level was not flash or in low level.
-Allow the instrument to stand for about 3 second to display the Sample Screen minutes.
-Press the START / STOP key to run the internal vacuum pump for 1 minute and ready to use.
-Use the select dial to select the PM range and press the START / STOP key to start a measurement.
-Finally, push the START/STOP key to stop the measuring after 3-hour sampling.
-Information such as sampling date, time, value and site condition were recorded during the monitoring period.
-All data were recorded in the data logger for further data processing.
Maintenance/Calibration
4.11 The dust meter required the following maintenance and calibration:
- The dust meter must be checked and calibrated against a High Volume Sampler (HVS) to validate the precision and accuracy of the readings obtained through the direct reading method. This calibration should be performed bi-monthly during all phases of the air quality monitoring.
- The correlation between the dust meter and HVS in measuring TSP was established by directly comparing the mass of dust particles collected on a filter paper by the HVS against the dust meter's reading. For accurate calibration, both the dust meter and the HVS should be turned on and off at the same location and at the same time.
- The correlation coefficient was verified to confirm the relationship between the readings from the dust meter and the HVS. This correlation factor was ascertained by comparing the outcomes from both the HVS and the dust meter.
- Prior to the initiation of dust monitoring, a check must be conducted to verify that all equipment is operational and has the necessary power supply. A zero count test was performed before and after each monitoring session to ensure accuracy.
Results and Observations
4.12 The outcomes of the 1-hour TSP monitoring are condensed in Table 4.4. For a comprehensive view, detailed results and graphical representations of the 1-hour TSP monitoring data can be found in Appendix E.
Table 4.4 Summary Table of 1-hour TSP Monitoring Results during the Reporting Month
Monitoring Station | Concentration | Action Level, μg/m3 | Limit Level, μg/m3 | |
(μg/m3) | ||||
Average | Range | |||
AM1 | 75 | 19 – 125 | 308 | 500 |
AM2 | 69 | 18 – 147 | 311 |
4.13 The 1-hour TSP monitoring took place according to the planned timetable for the reporting month, and there were no instances of exceeding the established Action/Limit Levels.
4.14 Based on field observations, the primary sources of dust at the specified air quality monitoring stations during the reporting month are listed in Table 4.5.
Table 4.5 Observation at Dust Monitoring Stations
Monitoring Station | Major Dust Source |
AM1 | Equipment operation and movement / road traffic, exposed site area, site vehicle |
AM2 | Road traffic, exposed site area, site vehicle / equipment operation and movement, vehicle / equipment operation and movement at warehouse nearby |
Event and Action Plan
4.15 In the event of a project-related violation of the criteria, measures will be taken as specified by the Event Action Plan detailed in Appendix I.
5 LANDSCAPE AND VISUAL MONITORING
Monitoring Requirements
5.1 The EIA Report recommends implementing strategies to mitigate impacts on landscape and visual resources throughout both the construction and operational phases of the Project.
5.2 The execution and upkeep of compensatory planting for landscaping are critical components of this process and must be monitored to confirm their complete fulfillment. It is essential to promptly address any potential clashes between the proposed landscaping efforts and other Project tasks or operational needs to ensure that the mitigation measures' objectives are not compromised. Furthermore, the enforcement of the mitigation measures advised by the EIA will be tracked continuously through the site audit program for the construction phase.
5.3 The Environmental Team (ET) carried out a fortnightly review of the execution of measures aimed at mitigating landscape and visual impacts as part of the weekly site audits. The findings and observations from these audit sessions are encapsulated in Table 7.1, while the status of implementation can be found detailed in Appendix K.
6 ECOLOGICAL MONITORING
Monitoring of Flora Species of Conservation Interest
6.1 In line with Section 8.3.2 of the EM&A Manual, a temporary protective barrier must be installed around the plant species of conservation significance identified in the detailed vegetation survey throughout the construction phase. This barrier should be well-maintained and regularly checked to ensure its effectiveness. Monthly checks of each plant species of conservation interest, as pinpointed in the detailed vegetation survey, are required during the construction phase to ensure that these species remain unaffected by the project's construction activities.
6.2 The monitoring aims to oversee the prompt execution of suitable environmental management practices and the application of mitigation measures concerning the preserved and relocated specimens of flora species of conservation interest. The correct setup and upkeep of the temporary protective fence surrounding these specimens were examined to assess its efficacy. The protective measures outlined in the approved transplantation proposal's implementation schedule were supervised.
6.3 As per the sanctioned detailed vegetation survey report and transplantation proposal, it was determined that 71 Brainea insignis specimens, 41 Spiranthes sinensis specimens, and 3 Aquilaria sinensis specimens should be relocated to the designated receiving site. Additionally, it was decided to preserve in situ 51 Keteleeria fortunei specimens, along with 26 small seedlings of Keteleeria fortunei and 7 small seedlings of Aquilaria sinensis, in the vicinity of Kong Nga Po Road near the Police Dog Unit and the Force Search Unit Training School.
Post-Transplantation Monitoring and Maintenance Programme
6.4 In line with the accepted transplantation proposal, the Contractor is mandated to carry out post-transplantation monitoring weekly for the first three months, and then monthly for the remainder of the 12-month establishment phase as well as the subsequent post-establishment phase, continuing until the construction phase of the Project concludes. This routine monitoring is critical for promptly identifying the growth condition of the transplanted species, any signs of construction work within or in the vicinity of the receptor site, and any changes in the environmental conditions of the receptor site.
6.5 For the initial year of acclimatization, it was advised to carry out maintenance activities to promote the robust growth of the transplanted species. Considering the state of the transplanted organisms following the 12-month establishment period, it was advised that maintenance activities continue through the Post-establishment Period until the completion of the Construction Phase. It was recommended to water the transplants daily for the first three months following the move, as well as throughout periods of drought, to maintain soil moisture. Additional maintenance tasks, such as mulching and weeding, should be performed as necessary.
Results and Observations
6.6 During the reporting month, the Contractor carried out monthly evaluations of the flora species of conservation interest on the 30th of September 2024. The enforcement of the protective measures detailed in the approved transplantation proposal was reviewed, along with the maintenance of the temporary protective fencing. Appendix H contains the photographic documentation and checklists from the monthly assessments. The health of the transplanted and retained species was generally observed to be average to poor. The Contractor was urged to keep a vigilant eye on the transplanted species and to implement the protective measures as specified in the approved transplantation proposal to safeguard these species. Furthermore, the Contractor was given the following directives:
1) To provide new identification tags for any Brainea insignis that were missing them;
2) To substitute any plant labels at the receptor site that had become illegible due to fading;
3) To refer to the soil improvement guidelines published by the Greening, Landscape and Tree Management Section (GLTMS) of the Development Bureau (2022) for application in the monitoring and upkeep of the transplanted plant species;
4) To set up shade nets;
5) To ensure the soil remains moist by adhering to the necessary daily watering schedule.
Transplanted Brainea insignis and Spiranthes sinensis
6.7 From May 21st to 27th, 2020, 71 Brainea insignis specimens and 41 Spiranthes sinensis specimens were relocated to the receptor site. The detailed account of the transplantation process was compiled in a Transplantation Report and forwarded to ET(Wellab), IEC(Acuity), and the Supervisor (AECOM) for their examination and documentation. Monitoring after transplantation took place weekly for the initial three months (from June to August 2020) and then monthly throughout the subsequent 12-month establishment period, as well as the post-establishment phase, culminating with the conclusion of the construction phase of the Project. The Contractor was responsible for tracking the health of the transplanted species and carried out maintenance measures such as watering, mulching, and weeding during the first year to nurture the transplanted species' healthy development. Monitoring of the transplanted Brainea insignis and Spiranthes sinensis took place on September 30th, 2024, within the reporting period, with the findings documented in Appendix H. Particular attention was given to the transplanted Brainea insignis specimens that were impacted by a bushfire on February 2nd, 2021, with their progress detailed in the post-transplantation monitoring records. The health of the preserved species was noted to be generally fair. The Contractor was advised to maintain vigilant monitoring of these species and to enforce the stipulated protective measures to ensure their continued preservation.
6.8 During the monthly checks, it was observed that there were no construction operations or storage of equipment taking place within the receptor site. The temporary protective barrier had been correctly installed and was being well-maintained to safeguard the transplanted species.
Precautionary Measure for Butterfly Species of Conservation Interest
6.9 As stipulated by FEP Condition 2.17, to reduce the impact on butterfly species of conservation concern, efforts shall be made to improve the new grassland habitats within the Project site. This enhancement shall be achieved by cultivating suitable plant species that serve as the larval food source for butterflies of conservation interest, like the Small Three-Ring, thereby supporting the well-being of these species.
6.10 The restoration of grassland zones within the Project must be completed prior to the initiation of the Project's operational phase. Information regarding the plant species to be used as larval food plants for butterflies, along with the design and execution details, will be subsequently provided under the building works contract of ArchSD.
Precautionary Measures to Minimize Indirect Disturbance on Ecology
6.11 As outlined in Section 9.7.3 of the EIA Report, implementing mitigation strategies for air, noise, water, waste, and landscaping can serve as preventative actions to avert and lessen any secondary effects of disturbance or pollution resulting from construction activities on the surrounding ecology and habitats outside the site. The Environmental Team (ET) conducted weekly site audits to oversee the prompt adoption of appropriate environmental management practices and the execution of mitigation measures at the Project site. The findings from these audits are consolidated in Section 7.3.
7 ENVIRONMENTAL SITE INSPECTION
Site Audits
7.1 The Environmental Team (ET) conducted site audits weekly to oversee the prompt adoption of appropriate environmental management practices and the execution of mitigation measures at the Contract site.
7.2 The Environmental Team (ET), along with representatives from the Client and the Contractor, conducted site audits on 2, 10, 17, 25, 30 September 2024 of the reported month in 2024.
7.3 In the site inspections conducted over the reporting period, there were no particular environmental concerns noted. It should be recognized that these observations pertain solely to the moments of inspection. The findings and advice from these audits are compiled in Table 7.1. The absence of identified environmental issues during the joint site inspections does not exempt the Contractor from their obligation to adhere strictly to all legal requirements, the Particular Specifications, and the Environmental Monitoring and Audit (EM&A) Manual.
Table 7.1 Observations of Weekly site Inspection and advice
Parameters | Date | Observations | Advice |
Waste Management Implications | 25-9-2024 | The observed storage of steel directly on the ground, rather than within designated containers, skips, or stockpiles, does not represent practices for promoting material reuse, recycling, or proper disposal | The storage of different types of waste in different containers or skips or stockpiles to enhance reuse or recycling of materials and their proper disposal. |
Landscape and Visual Impacts | 25-9-2024 | Using a tree both as an anchor and girdling it with rope can significantly compound the adverse impacts on heightened susceptibility to pests and diseases, and potential death. | An alternative is being considered and explored in reference to the Code of Practice for Metal Scaffolding Safety of the Labour Department |
Landscape and Visual Impacts | 25-9-2024 | The storage areas for materials compact the soil around tree | 1)DEVB TC(W) 7/2015 on “tree preservation” stipulates that the material storages are to be kept away from the Tree Protection Zone and vehicular/pedestrian access to avoid compaction of soil around trees; and/or 2) An alternative is being considered and explored in reference to Code of Practice for Bamboo Scaffolding Safety of the Labour Department |
Others | 25-9-2024 | Storing materials directly in plant areas may lead to several potential environmental and ecological impacts. | The materials are relocated and stored in areas that do not contain plants. |
Others | 25-9-2024 | Non-soil or muddy water has been observed flowing out from the construction site. | 1)The Wastewater Discharge Layout Plan is revised to incorporate the new discharge point; or 2)Sources of non-soil or muddy water are identified for the new design |
Implementation Status of Environmental Mitigation Measures
7.4 In accordance with the EIA Report and the Project's EM&A Manual, the outlined mitigation measures are recommended to be implemented throughout the construction phase. An overview of the Environmental Mitigation Implementation Schedule (EMIS) is available in Appendix K.
Solid and Liquid Waste Management Status
7.5 Pursuant to the EM&A Manual, waste management practices were reviewed in the weekly site audits to assess compliance with the Project's Waste Management Plan (WMP) and pertinent legal and contractual obligations. The auditing process encompassed the examination of waste handling, storage, transport, and disposal methods.
7.6 The Contractor has appointed Environmental Officers on-site to manage environmental aspects, implement pollution control strategies, maintain proper site conduct, and educate workers on waste management. Efforts to reduce waste production include actively using Construction and Demolition (C&D) materials. Excavated materials have been sorted and screened on-site to salvage any recyclables. Non-reactive C&D materials were utilized on-site for backfill and to construct the haul road surface. Furthermore, inert materials from excavation activities were repurposed as fill in other local projects. Excess inert C&D materials were sent to the Government’s public fill reception facilities (PFRFs) for use in other projects. To oversee the disposal of inert and non-inert C&D materials and prevent illegal dumping, a system is in place where all materials are weighed by a weighbridge before leaving the site, and the Trip Ticket System is rigorously enforced.
7.7 Contractor is encouraged to reduce waste production by recycling or reusing materials. It is imperative that all the mitigation strategies outlined in the EM&A Manual and the waste management plans be thoroughly executed. A summary of the progress in implementing waste management and reduction strategies is provided in Appendix K.
7.8 This Project produces inert Construction and Demolition (C&D) materials as well as non-inert C&D materials. The non-inert variety consists of general refuse and other waste materials that cannot be repurposed or recycled, necessitating disposal at assigned landfill locations. Data detailing the volume of waste resulting from the Project's construction activities over the reporting period can be found in Appendix L.
8 ENVIRONMENTAL NON-CONFORMANCE
Summary of Exceedances
8.1 During the reporting month, there were no instances where the air quality exceeded the established Action and Limit Levels.
8.2 There were no instances of construction noise surpassing the designated Action and Limit Levels in the reporting period.
8.3 If the monitoring data from any specific stations reveal that environmental parameters have surpassed the Action/Limit Levels, then the procedures outlined in the Event and Action Plans in Appendix I should be executed. A summary of any exceedance records for the reporting month can be found in Appendix J.
Summary of Environmental Non-Compliance
8.4 There were no records of environmental compliance breaches during the reported month.
Summary of Environmental Complaint
8.5 In the month under review, no complaints were registered. A log of all complaints accumulated since the start of the Project is compiled in Appendix M.
Summary of Environmental Summon and Successful Prosecution
8.6 Since the beginning of the Project, there have been no instances of successful environmental prosecution or receipt of summons. A comprehensive record of all environmental summonses and successful prosecutions since the Project's inception is documented in Appendix N.
9 FUTURE KEY ISSUES
Key Issues in the Coming Three Months
9.1 Appendix A contains the provisional construction schedules for the Project. Over the next three months, the principal construction tasks to be carried out will include:
1. Open cut excavation
2. Removal of soil
3. Construction of footings
4. Construction of substructure and superstructure
5. Construction of footbridge
6. Backfilling
7. U.U. Lead in and Pipe Duct Connection
8. MIC installation
9.2 Referring to the site layout plan found in Appendix A, which details the expected construction activities for the next three months, the primary environmental concerns related to these activities are likely to be construction dust, noise, water quality, waste management, landscape and visual aesthetics, and ecological impacts. The anticipated environmental effects have been factored into the mitigation strategies planned for the upcoming months.
9.3 The Contractor has advised mitigation measures for the next three months, which the Environmental Team (ET), Independent Environmental Checker (IEC), and the Client's Representative have reviewed through email correspondence during site audits. The Proactive Environmental Protection Proforma, which outlines the key site activities, potential environmental impacts, and advised mitigation strategies, has been examined and verified by the IEC and is displayed in Appendix A.
9.4 During construction and in periods of dry weather, dust can arise from work activities and uncovered site areas. To mitigate dust emissions that could affect nearby villages, the Contractor is advised to diligently apply air quality control measures as outlined in the layout plan in Appendix A, to the greatest extent possible. Moreover, the Contractor is reminded to adhere to the Project Implementation Schedule detailed in the approved EIA report/EM&A Manual, implementing suitable dust suppression tactics to curb emissions from intensive construction tasks such as ground excavation and earth moving. This includes managing all active work areas, bare site surfaces, and unpaved roads, especially under dry conditions, by covering 80% of stockpiled materials with impervious coverings and by moistening dusty substances with water just before loading and transfer activities. This ensures materials remain damp during handling in stockpile regions. Additionally, the Contractor must adhere to the prescribed dust control methods under the Air Pollution Control (Construction Dust) Regulation to prevent negative dust impacts from the Project's construction activities.
9.5 Furthermore, construction noise represents a significant environmental concern during the Project's development. It is important to implement noise reduction strategies, such as utilizing quiet machinery and installing noise barriers where relevant. The Contractor has been prompted to regularly inspect and upkeep the sound-dampening materials on noisy sections of plant and machinery, ensuring there are no openings in the noise barriers. They should also actively recognize any potential construction noise impacts to Noise Sensitive Receivers (NSRs) and introduce adequate mitigation measures when required. Additionally, residents in the nearby Kong Nga Po village should be informed in advance about any potentially noisy activities at the work site.
9.6 The Contractor is advised to uphold measures that protect water quality throughout the construction process. This includes constructing barriers such as dikes or embankments to prevent flooding around the perimeters of areas where soil is being moved or excavated. Provision should be made for temporary channels to direct runoff effectively into a designated watercourse via a trap designed to capture sediment from the site. These sediment/silt traps should also be integrated into the permanent drainage systems to improve the settling of particulates. It is essential to utilize effective silt removal systems to ensure that the effluent treated by the wastewater treatment plant complies with the standards specified in the WPCO licenses. The Wastewater Discharge Layout Plan, as shown in Appendix Q and provided by the Contractor, outlines the specific pathways through which wastewater is to be conveyed from its source to a treatment facility or point of discharge
Monitoring Schedule for the Next Month
9.7 Appendix D displays the provisional schedule for environmental monitoring activities planned for the upcoming month.
10 CONCLUSIONS AND RECOMMENDATIONS
Conclusions
10.1 This Monthly EM&A Report details the environmental monitoring and audit (EM&A) activities conducted in September 2024, following the guidelines set out in the EM&A Manual.
10.2 During the month in question, air quality monitoring did not register any instances of surpassing the Action/Limit Levels.
10.3 No instances of construction noise exceeding the established Action/Limit Levels were documented in the reporting month's monitoring records.
10.4 Site inspections focusing on environmental aspects took place on the 2, 10, 17, 25, 30 September 2024. Additionally, monitoring of landscape and visual impacts was performed on the 2, 10, 17, 25, 30 September 2024, and ecological monitoring was conducted on the 30 September 2024 by ET within the reporting month. The Contractor also conducted monitoring on 30 September 2024. There were no records of environmental non-compliance for the reporting month. It should be noted that the absence of any particular environmental issues during the joint site inspections does not exempt the Contractor from their obligation to adhere fully to all legal requirements, the specifications outlined in the contract, and the procedures in the EM&A Manual.
10.5 During the reporting month, there were no complaints lodged, nor were there any notices of summons or records of successful legal actions received.
10.6 The Environmental Team (ET) will persist in overseeing the Environmental Monitoring and Audit (EM&A) program. All environmental obligations are fulfilled, and the necessary mitigation measures are properly executed.
Recommendations
10.7 Based on the environmental audits conducted during the reporting month, the subsequent advice was put forward:
Air Quality Impact
l To enhance the dust suppression measures including watering for the dust generation works, exposed site area and haul road;
l To minimize the indirect impacts on air quality resulting from the operation of machineries on the construction site, one of the measures to be adopted is the use of biodiesel B100; and
l To regular check the valid NRMM labels are properly displayed on the regulated machines and non-road vehicles
Construction Noise
l To refer to the ISO 12001:1996 or other comprehensive practices and subsequently develop a thorough inspection and maintenance protocol for the plant and equipment, maintaining a focus on Noise Control; and
l To maintain temporary noise barriers for operations of noisy equipment near the noise sensitive receivers, if necessary.
Water Impact
l To maintain the cover for open stockpile of and exposed slope;
l To keep reviewing and updating temporary drainage system;
l To maintain the earth bunds or sand bag barriers on site to direct stormwater to silt removal facilities; and
l To divert the muddy water at the retention pond to the wetsep for treatment before discharging out.
Waste/Chemical Management
l To check for any accumulation of waste materials or rubbish on site; and
l To avoid improper handling, storage and dispose of oil drums or chemical containers on site.
Ecology
l To maintain soil moisture, daily watering is required;
l To install a shaded net;
l To refer to the Guidelines on Soil Improvement issued by the Greening, Landscape and Tree Management Section (GLTMS) of the Development Bureau (2022) for the effective monitoring and maintenance of transplanted flora species; and
l The wild plants that are growing in undesirable areas should be removed, as they compete with the cultivated flora species of conservation interest.
Landscape and Visual
l To remove the construction materials within the tree protection zone; and
l To keep the tree protection zone large enough to protect the tress.