EXECUTIVE SUMMARY
4. Summary of Complaints, Notification of Summons and Prosecutions19
7. Conclusion and Recommendations23
List of Appendices
A. Alignment and Works Area for the Contract No. HY/2014/20
B. Construction Programme
C. Project Organization Chart
D. Dust Event-Action Plan (EAP)
E. Noise Event-Action Plan (EAP)
F. Environmental Mitigation Implementation Schedule (EMIS)
G. Monitoring Schedules of the Reporting Month
H. Calibration Certificate (Air Monitoring)
I. Calibration Certificate (Noise)
J. The Certification of Laboratory with HOKLAS Accredited Analytical Tests
K. Location Plan of Noise and Air Quality Monitoring Station
L. Monitoring Data (Air Monitoring)
M. Monitoring Data (Noise)
N. Waste Flow Table
O. Statistics on Complaint, Notifications of Summons and Successful Prosecutions
P. Monitoring Schedule of the Coming Month
Executive Summary
A.1 Build King – SKEC Joint Venture (“Contractor”) commenced the construction works of Highway Department (HyD) Central Kowloon Route Contract No. HY/2014/20 – Section of Yau Ma Tei West (“The Project”) on 12 February 2019. This is the 17th monthly Environmental Monitoring and Audit (EM&A) report presenting the EM&A works carried out during the period from 1 July 2020 to 31 July 2020.
A.2 A summary of the construction works reported by Main Contractor for the Project during the reporting month is listed below.
|
Construction Activities undertaken |
|
· Pre-drilling Works at Portion 1B, 1D, 1E and 1F · Tree Felling at Portion 1B and 1E · Socket H-pile at Portion 1B, 1D, 1E, 1F and 1G · Removal of existing Steel Bridge at Portion 1B, 1E and 1G · Excavation and Lateral Support (ELS) and Excavation for Vent Adit Construction Ch 0-60 at Portion 9 · Pipe Pile at D-wall and Vent Adit (Ch-250~280) at Portion 1D, 1F and 10 · Guide Wall and D-Wall breaking works at Portion 1F · Reinforced Concrete(RC) works for Vent Adit at Ch 0-60 (partial only) at Portion 9 · Jacking Pit Construction of Sewerage System at Portion 1B · Watermain Installation at new pipe sleeve (pipe jacking) at Portion 1B · Remaining Watermain Installation at Portion 1B and 1D · Pile Cap and Pier Construction at Bridge G including Abutment G at Portion 1B · Pipe Cap and Pier Construction at Bridge B2/C2 (C2P1, C2P2 an B2P1) at Portion 1E |
A.3
A summary of regular construction noise and
construction dust monitoring activities in this reporting period is listed
below:
Regular construction noise monitoring during normal working hours
|
W-N1A, W-N18, W-N25A, W-P11 |
6 times |
Construction dust (24-hour TSP) monitoring
|
W-A1 |
6 times |
|
W-A6 |
7 times, 1 voided sample, 6 valid samples |
Construction dust (1-hour TSP) monitoring
|
W-A1,W-A6 |
18 times
|
A.4 Due to the technical problem for HVS equipment on 24 July 2020 at Man Cheong Building (W-A6), 24-hour TSP dust monitoring was suspended. Equipment inspection was conducted and the problem was fixed on 25 July 2020. Supplementary 24-hour TSP dust monitoring was conducted on the same day.
A.5 Scheduled monitoring for 1-hour TSP remained unaffected, only the schedule of 24-hour TSP was changed.
A.6 Bi-weekly inspection of the implementation of landscape and visual mitigation measures was conducted on 2, 16, 30 July 2020. Details of the audit findings and implementation status are presented in Section 5.
A.7 Joint weekly site inspections were conducted by representatives of the Contractor, Engineer and Contractor’s ET on 2, 9, 16, 23, 30 July 2020. One joint site inspection with IEC also undertaken on 16 July 2020. Details of the audit findings and implementation status are presented in Section 5.
A.8 Details of waste management are presented in Section 3.
A.9 No exceedance of the Action and Limit Levels of 24-hour TSP and 1-hour TSP and construction noise monitoring were recorded during the reporting period.
A.10 No compliant or non-compliance was reported in the reporting month.
A.11 No notification of summon or prosecution was received in this reporting period.
A.12 A summary of the construction activities provided by Main Contractor in the next reporting month is listed below:
|
Construction Activities to be undertaken |
|
· Tree Felling at Portion 1B, 1E · Socket H-Pile at Portion 1D along Hoi Wang Road · Removal of existing Steel Bridge at Portion 1B, 1E and 1G · RC works for Vent Adit at Ch 0~60 (partial only) at Portion 0 · Pipe Pile Installation at D-wall and Vent Adit (CH 250~280) at Portion 1D, 1F and 10 · Jacking Pit Construction of Sewerage System at Portion 1B · Remaining Watermain Installation at Portion 1B and 1D · Pier Construction at Bridge G including Abutment G at Portion 1B · Pier Construction at Bridge B2/C2 (C2P1, C2P2, B2P1) at Portion 1E |
1. Basic Project Information
1.1. Central Kowloon Route (CKR) is a 4.7 km long dual 3-lane trunk road in Central Kowloon linking Yau Ma Tei Interchange in West Kowloon with the road network on Kai Tak Development and Kowloon Bay in East Kowloon.
1.2. The Central Kowloon Route – Design and Construction Environmental Impact Assessment Report (Register No.: AEIAR-171/2013) was approved with conditions by the Environmental Protection Department (EPD) on 11 July 2013. An Environmental Permit (EP 457/2013) was issued on 9 August 2013. Variations of EP (VEP) was subsequently applied for and the latest EP (EP-457/2013/C) was issued by EPD on 16 January 2017.
1.3. The construction of the CKR had been divided into different sections. This Contract No. HY/2014/20 – Section of Yau Ma Tei West (YMTW) covers part of the construction activities located at Yau Ma Tei under the EP which includes:
- Section of Yau Ma Tei West
i. Construction of an approximately 250m long Depressed Road at the western tunnel portal of CKR;
l Diversion of a section of existing drainage box culvert of approximately 215m in length;
vii. Design and construction of the façade system of the Landscaped Deck;
viii. Design and construction of lifts at the Landscaped Deck;
The alignment and works area for the Contract No. HY/2014/20 - are shown in Appendix A.
1.4. A summary of the major construction activities undertaken in this reporting period is shown in Table 1.1. The construction programme is presented in Appendix B.
Table 1.1 Summary of the construction activities reported by Main Contractor during the Reporting Month.
|
Construction Activities undertaken |
|
· Pre-drilling Works at Portion 1B, 1D, 1E and 1F · Tree Felling at Portion 1B and 1E · Socket H-pile at Portion 1B, 1D, 1E, 1F and 1G · Removal of existing Steel Bridge at Portion 1B, 1E and 1G · ELS and Excavation for Vent Adit Construction Ch 0-60 at Portion 9 · Pipe Pile at D-wall and Vent Adit (Ch-250~280) at Portion 1D, 1F and 10 · Guide Wall and D-Wall breaking works at Portion 1F · RC works for Vent Adit at Ch 0-60 (partial only) at Portion 9 · Jacking Pit Construction of Sewerage System at Portion 1B · Watermain Installation at new pipe sleeve (pipe jacking) at Portion 1B · Remaining Watermain Installation at Portion 1B and 1D · Pile Cap and Pier Construction at Bridge G including Abutment G at Portion 1B · Pipe Cap and Pier Construction at Bridge B2/C2 (C2P1, C2P2 an B2P1) at Portion 1E |
1.5. The project organisational chart specifying management structure and contact details are shown in Appendix C.
Table 1.2 Summary of the Status of Valid Environmental Licence,
Notification, Permit and Documentations
|
Permit/ Licences/ Notification /Reference No. |
Valid Period |
Status |
Remark |
|
|
From |
To |
|||
|
Environmental Permit |
||||
|
EP-457/2013/C |
23 Apr 2019 |
End of Project |
Valid |
- |
|
Wastewater Discharge License |
||||
|
WT00033736-2019 |
31 May 2019 |
31 May 2024 |
Valid |
- |
|
Notification of Construction Works under the Air Pollution Control (Construction Dust) Regulation |
||||
|
438845 |
31 Oct 2018 |
End of Project |
Notified |
- |
|
Chemical Waste Producer Registration |
||||
|
WPN5212-229-B2527-02 |
31 Oct 2018 |
End of Project |
Valid |
- |
|
Billing Account for Disposal of Construction Waste |
||||
|
7032430 |
2 Nov 2018 |
End of Project |
Valid |
- |
|
Construction Noise Permit |
||||
|
GW-RE0151-20 |
16 Mar 2020 |
12 Sep 2020 |
Valid |
Construction Noise Permit for Overtime Lifting, Energy Supply, Dewatering, Bentonite Plant and others |
|
GW-RE0353-20 |
12 May 2020 |
11 Aug 2020 |
Valid |
Sign Gantry Modification Works at Yau Ma Tei Area |
|
GW-RE0379-20 |
17 May 2020 |
2 Aug 2020 |
Valid |
Detouring Scheme at Hoi Wang Road |
|
GW-RE0381-20 |
12 May 2020 |
31 Jul 2020 |
Valid |
Road Marking Works for J4 Modification |
|
GW-RE0390-20 |
14 May 2020 |
2 Aug 2020 |
Valid |
Contingency for the Detouring Scheme |
|
GW-RE0387-20 |
16 May 2020 |
6 Aug 2020 |
Valid |
Road Marking Modification near Cherry Street |
|
GW-RE0548-20 |
30 Jun 2020 |
23 Sep 2020 |
Valid |
Cross Road Ducting at Lai Cheung Road (2nd Resubmission) (TTA Drawing LAICR/027) |
|
GW-RE0545-20 |
5 Jul 2020 |
4 Oct 2020 |
Valid |
Hoi Wang Road Road-Marking Repainting Work (TTA Drawing HOIWR/085e) |
2.1. Environmental permit (EP) conditions under the EIAO, submission status under the EP and implementation status of mitigation measures had been reviewed and implemented on schedule. The status of required submissions under the EP (EP-457/2013/C) as of the reporting period for the Project are summarised in Table 2.1
Table 2.1 Summary of Status of Required Submission for EP-457/2013/C for the Project
|
EP Condition (EP-457/2013/C) |
Submission |
Submission date |
|
Notification of Commencement Date of Construction of the Project |
||
|
14 Jul 2020 |
2.2. Details of the major construction activities undertaken in this reporting period are shown in Table 2.2.
Table 2.2 Summary of the construction Activities Undertaken during the Reporting Month.
|
Constructionactivities undertaken |
Remarks on progress |
|
· Pre-drilling Works at Portion 1B, 1D, 1E and 1F |
· 96% completion |
|
· Tree Felling at Portion 1B and 1E |
· 95% completion |
|
· Socket H-pile at Portion 1B, 1D, 1E, 1F and 1G |
· 44% completion |
|
· Removal of existing Steel Bridge at Portion 1B, 1E and 1G |
· 15% completion |
|
· ELS and Excavation for Vent Adit Construction Ch 0-60 at Portion 9 |
· 91% completion |
|
· Pipe Pile at at D-wall and Vent Adit (Ch-250~280) at Portion 1D, 1F and 10 |
· 85% completion |
|
· Guide Wall and D-Wall breaking works at Portion 1F |
· 25% completion |
|
· RC works for Vent Adit at Ch 0-60 (partial only) at Portion 9 |
· 10% completion |
|
· Jacking Pit Construction of Sewerage System at Portion 1B |
· 60% completion |
|
· Watermain Installation at new pipe sleeve (pipe jacking) at Portion 1B |
· Completed |
|
· Remaining Watermain Installation at Portion 1B and 1D |
· 50% completion |
|
· Pile Cap and Pier Construction at Bridge G including Abutment G at Portion 1B |
· 60% completion |
|
· Pipe Cap and pier Construction at Bridge B2/C2 (C2P1, C2P2 an B2P1) at Portion 1E |
· 60% completion |
2.1. The drawing showing the the project layout and the location of the monitoring stations and environmental sensitive receivers are attached in Appendix A and Appendix K. Co-ordinates of the monitoring location and temporary alternative monitoring location are shown in Table 2.3.
Table 2.3 Summary of the location of the monitoring stations
|
Monitoring Location |
Location ID |
Latitude |
Longitude |
|
Yau Ma Tei Catholic Primary School (Hoi Wang Road) |
W-A1/ W-N1A |
||
|
Man Cheong Building |
W-A6 |
||
|
Hydan Place |
W-N18 |
||
|
Prosperous Garden Block 1 |
W-N25A |
||
|
The Coronation Tower 1 |
W-P11 |
Air Quality
3.1.1. The impact monitoring had been carried out in accordance with section 5.8 of the approved EM&A Manual to determine the 1-hour and 24-hour total suspended particulates (TSP) levels at the monitoring locations in the reporting month.
3.1.2. The sampling frequency of at least once in every 6 days, shall be strictly observed at the monitoring stations for 24-hour TSP monitoring. For 1-hour TSP monitoring, the sampling frequency of at least 3 times in every 6 days should be undertaken when the highest dust impact occurs.
3.1.3. General meteorological conditions (wind speed, direction and precipitation) and notes regarding any significant adjacent dust producing sources had also been recorded throughout the impact monitoring period.
Noise
3.1.4. Construction noise level shall be measured in terms of the A-weighted equivalent continuous sound pressure level (Leq). Leq (30min) shall be used as the monitoring parameter for the time period between 0700 and 1900 hours on normal weekdays.
3.1.5. For all other time periods, Leq (5min) shall be employed for comparison with the Noise Control Ordinance (NCO) criteria.
3.1.6. As supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.
Air Quality
3.2.1. 1-hour TSP levels and 24-hour TSP had been measured with direct reading dust meter and High Volume Samplers respectively. It has been demonstrated its capability in achieving comparable results with high volume sampling method as set out in the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50).
3.2.2. The 1-hour TSP meter was calibrated by the manufacturer prior to purchasing. Zero response of the instrument was checked before and after each monitoring event. Operation of the 1-hour TSP meter followed manufacturer’s Operation and Service Manual. The 24-hour TSP meter was calibrated against firmware 80570-8100-V1.0.4, annually. Operation of the 24-hour TSP meter followed manufacturer’s Operation and Service Manual. Valid calibration certificate of dust monitoring equipment is attached in Appendix H.
3.2.3. A summary of the equipment that was deployed for the 24- hour averaged monitoring is shown in Table 3.1. The TSP monitoring was conducted as per the schedule presented in Appendix G.
3.2.4. The equipment used for 1-hour TSP and 24-hour TSP measurement and calibration are summarised in Table 3.1
Table 3.1 Construction Dust Monitoring Equipment
|
Monitoring Parameter |
Monitoring Equipment |
Serial Number |
Date of Calibration |
|
1-hour TSP |
LD-5R Digital Dust Indicator |
992818 |
3 Sep 2019 |
|
1-hour TSP |
LD-5R Digital Dust Indicator |
851820 |
23 Aug 2019 |
|
24-hour TSP |
TE-5170X High Volume Sampler |
1049 |
2 Jul, 18 Jul 2020 |
|
TE-5170X High Volume Sampler |
1050 |
2 Jul, 18 Jul 2020 |
|
|
TE-5028A Calibration Kit |
3702 |
10 Oct 2019 |
Noise
3.2.5. Sound level meter in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications has been used for carrying out the noise monitoring. The sound level meter has been checked using an acoustic calibrator. The wind speed and other metrological data has been recorded from Hong Kong Observatory- King’s Park meteorological station, along with portable wind speed meter stand by as back up if malfunction occurred or data was not recorded from HKO.
3.2.6. An acoustic calibrator and sound level meter using for the monitoring is within the valid period and were calibrated per year. Valid calibration certificate of noise monitoring equipment is attached in Appendix I.
3.2.7. The details of equipment using for monitoring are listed in Table 3.2, as below:
Table 3.2 Monitoring Equipment Used in Monitoring
|
Monitoring Equipment |
Serial Number |
Date of Calibration |
|
Nti XL2 Sound Level Meter |
A2A-13663-E0 |
12 Sep 2019 |
|
Nti XL2 Sound Level Meter |
A2A-13548-E0 |
10 Jan 2020 |
|
Pulsar 105 Acoustic Calibrator |
63705 |
28 Sep 2019 |
3.3. Monitoring Methodology and QA/QC results
Air Quality
3.3.1. The 1-hour TSP monitor, portable dust meters (Sibata Digital Dust Indicator Model LD-5R) was used for the impact monitoring. The 1-hour TSP meters provides a real time 1-hour TSP measurement based on 90o light scattering. Three 1-hour TSP level were logged per every six days.
3.3.2. The 24-hour TSP monitor, High Volume Samplers (Tisch TE-5170X High Volume Air Sampler) were used for the impact monitoring. The 24-hour TSP monitoring consists of the following:
u The HVS was set at the monitoring location, with electricity supply connected and secured;
u HVS was calibrated before commencing the 1st measurement;
u The filter paper was weight and provided by HOKLAS lab (Acumen Laboratory and Testing Limited and ALS Technichem (HK) Pty Ltd) before and after the sampling. Certificate of HOKLAS accredited laboratory can be referred to Appendix J;
u The airflow over time during sampling process was recorded by the HVS.
3.3.3. HVSs was free- standing with no obstruction. The following criteria were considered in the installation of the HVS:
u Appropriate support to secure the samples against gusty wind needed to be provided the monitoring station;
u A minimum of 2m separation from walls, parapets and penthouses was required for rooftop samplers;
u No furnace or incinerator flues was nearby;
u Airflow around the sampler was unrestricted; and
u Permission could be obtained to set up the samplers and gain access to the monitoring station.
3.3.4. Preparation of Filter Papers
u Glass fiber filters were labelled and sufficient filters that were clean and without pinholes were selected;
u All filters were equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature was around 25℃ and not varied by more than ±3℃; the relative humidity (RH)was 40%; and
u Acumen Laboratory and Testing Limited and ALS Technichem (HK) Pty Limited, as HOKLAS accredited laboratory, implemented comprehensive quality assurance and quality control programmes on the filters.
u The power supply was checked to ensure that the HVS was working properly;
u The filter holder and area surrounding the filter were cleaned;
u The filter holder was removed by loosening the foul bolts and a new filter, with stamped number upward, on a supporting screen was aligned carefully;
u The filter was properly aligned on the screen so that the gasket formed an airtight seal on the outer edges of the filter;
u The swing bolts were fastened to hold the filter holder down to the frame. The pressure applied should be sufficient to avoid air leakage at the edges;
u The shelter lid was closed and secured with an aluminum strip;
u The HVS was warmed- up for about 5 minutes to establish run- temperature conditions;
u A new flow rate record sheet was inserted into the flow recorder;
u The flow rates of the HVS was checked and adjusted to between 1.22-1.37m³min³, which was within the range specified in the EM&A Manual (i.e. 0.6- 1.7 m³min³);
u The programmable timer was set for a sampling period of 24 hours ±hour, and the starting time, weather condition and filter number were recorded;
u The initial elapsed time was recorded;
u At the end of sampling, the sampled filter was removed carefully and folded in half so that only surfaces with collected particulate matter were in contact;
u The filter paper was placed in a clean plastic envelope and sealed; all monitoring information was recorded on a standard data sheet and
u The filters were sent to (Acumen Laboratory and Testing Ltd and ALS Technichem (HK) Pty Ltd) for analysis.
3.3.6. Maintenance and Calibration
u The HVS and their accessories were maintained in a good working condition. For example, motor brushes were replaced routinely and electrical wiring was checked to ensure a continuous power supply; and
u The flow rate of each HVS with mass flow controller was calibrated using an orifice calibrator, Initial calibrations of the dust monitoring equipment were conducted upon installation and prior to commissioning. Five- point calibration was carried out for HVS using TE-5025 Calibration Kit. HVS is calibrated bimonthly. The calibration records for the HVS is given in Appendix H.
u The wind speed has been recorded from Hong Kong Observatory- King’s Park meteorological station, along with portable wind speed meter stand by as back up if malfunction occurred or data was not recorded from HKO
Noise
3.3.8. All noise measurements by the meter were set to FAST response and on the A-weighted equivalent continuous sound pressure level (Leq) in decibels dB(A). LAeq(30mins) was used as the monitoring metric for the time period between 0700 –1900 hours on normal weekdays. The measured noise levels were logged every 5 minutes throughout the monitoring period.
3.3.9. Prior to the noise measurement, the accuracy of the sound level meter was checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Checking was conducted before and after the monitoring. The calibration level before and after the noise measurement is agreed to within 1.0 dB(A).
3.3.10. Noise measurements should not be made in presence of fog, rain, wind with a steady speed exceeding 5 ms-1 or wind with gusts exceeding 10 ms-1. The wind speed was checked with a portable wind speed meter capable of measuring with speeds in ms-1.
Air Quality
Table 3.3 Location of the Dust Monitoring Stations
|
Air Quality Monitoring Station |
Dust Monitoring |
|
W-A1 |
Yau Ma Tei Catholic Primary School (Hoi Wang Road) |
|
W-A6 |
Man Cheong Building |
Noise
Table 3.4 Noise Monitoring Stations
|
Noise Monitoring Station |
Identified Noise Monitoring Station |
Type of Measurement |
|
W-N1A |
Yau Ma Tei Catholic Primary School (Hoi Wang Road) |
Façade |
|
W-N18 |
Hydan Place |
Façade |
|
W-N25A |
Prosperous Garden Block 1 |
Façade |
|
W-P11 |
The Coronation Tower 1 |
Façade |
3.5. Monitoring date, time, frequency and duration
3.5.1. A summary of impact monitoring duration, sampling parameter and frequency is presented in Table 3.5.
Table 3.5: Summary of Impact Monitoring Programme
|
Impact Monitoring |
Duration |
Sampling Parameter |
Frequency |
|
Dust |
1-hour continuous measurement |
1-hour TSP |
3 times per six days |
|
Dust |
24-hour continuous sampling |
24-hour TSP |
Once per six days |
|
Noise |
30-minute continuous measurement |
Leq 30 min, L10 and L90 as reference. |
Once Leq 30 min from 0700 – 1900 per seven days |
Air Quality
3.6.1. According to our field observations, the major dust source identified at the designated air quality monitoring station in the reporting month are summarised in Table 3.6
Table 3.6 Observation at Dust Monitoring Station
|
Monitoring Station |
Major Dust Source |
|
W-A1 |
Nearby traffic |
|
W-A6 |
Nearby traffic |
3.6.2. 1- hour TSP dust monitoring for the reporting month was carried out on 2, 7, 13, 18, 24, 30 July 2020 at W-A1 and W-A6; 24-hour TSP dust monitoring on 2, 7, 13, 18, 24, 30 July 2020 at W-A1 and on 2, 7, 13, 18, 25, 30 July 2020 at W-A6.
3.6.3. Due to the technical problem for HVS equipment on 24 July 2020 at Man Cheong Building (W-A6), 24-hour TSP dust monitoring was suspended. Equipment inspection was conducted and the problem was fixed on 25 July 2020. Supplementary 24-hour TSP dust monitoring was conducted on the same day.
3.6.4. Scheduled monitoring for 1-hour TSP remained unaffected, only the schedule of 24-hour TSP was changed.
3.6.5. The results for 1-hour TSP and 24-hour TSP are summarized in Table 3.7 and Table 3.8. The measurement data and details of influencing factors such as weather conditions and site observation are presented in Appendix L.
Table 3.7 Summary of 1-hour TSP Monitoring Results
|
Monitoring Location |
Range(μg/m3) |
Action Level(μg/m3) |
Limit Level(μg/m3) |
|
W-A1 |
32-63 |
319 |
500 |
|
W-A6 |
31-73 |
306 |
500 |
Table 3.8 Summary of 24-hour TSP Monitoring Results
|
Monitoring Location |
Range(μg/m3) |
Action Level(μg/m3) |
Limit Level(μg/m3) |
|
W-A1 |
16-42 |
167 |
260 |
|
W-A6 |
18-45 |
166 |
260 |
Noise
3.6.6. According to our field observations, the major noise source identified at the designated noise monitoring station in the reporting month are summarised in Table 3.9:
Table 3.9 Observation at Noise Monitoring Stations
|
Monitoring Station |
Major Noise Source |
|
W-N1A |
Nearby traffic |
|
W-N18 |
Nearby traffic |
|
W-N25A |
Nearby traffic |
|
W-P11 |
Nearby traffic |
3.6.7. The construction noise impact monitoring for the reporting month was carried out on 2, 7, 13, 18, 24, 30 July 2020. The measurement data are shown in Appendix M and summarized in Tables 3.10:
Table 3.10 Summary of Noise Monitoring Results
|
Time Period |
Monitoring location |
Parameter |
Range, dB(A) |
|
|
||
|
Leq |
L10 |
L90 |
Action Level |
Limit Level# |
|||
|
Normal working hour from 0700- 1900 |
W-N1A |
Leq 30min |
58.5-63.3 |
59.6-65.3 |
57.0-60.0 |
When one documented complaint is received |
70dB(A) or 65 dB(A) during examination |
|
W-N18 |
68.5-71.9 |
70.5-73.5 |
66.4-69.6 |
75dB(A)# |
|||
|
W-N25A |
66.4-71.3 |
68.2-73.5 |
63.6-69.4 |
||||
|
W-P11 |
68.0-70.7 |
70.2-74.0 |
64.4-66.2 |
||||
|
Remarks: |
1. # If works are to be carried out during restricted hours, the conditions in the construction noise permit by the Noise Control Authority have to be followed. |
3.6.8. The waste generated from this Project includes inert C&D materials, and non-inert C&D materials. Non-inert C&D materials are made up of general refuse, vegetative wastes and recyclable wastes such as plastics and paper/cardboard packaging waste. Steel materials generated from the project are also grouped into non-inert C&D materials as the materials were not disposed of with other inert C&D materials. With reference to relevant handling records and trip tickets of this Project, the quantities of different types of waste generated in the reporting month are summarised in Table 3.11. Details of cumulative waste management data are presented as a waste flow table in Appendix N.
Table 3.11 Quantities of waste generated from the Project
|
Reporting period |
Quantity |
|||||
|
Inert C&D Materials (in ‘tonnes) |
Chemical Waste (in‘000 Kg) |
Non-inert C&D Materials |
||||
|
Others, e.g. General Refuse disposed at Landfill (in ‘tonnes) |
Recycled materials |
|||||
|
Paper/card board (in ‘000 Kg) |
Plastics (in ‘000 Kg) |
Metals (in ‘000 Kg ) |
||||
|
Jul-2020 |
13879.1 |
0.0 |
20.3 |
0.0 |
0.3 |
0.0 |
4. Summary of Complaints, Notification of Summons and Prosecutions
4.1. The Environmental Complaint Handling Procedure is shown in below Table 4.1:
Table 4.1 Environmental Complaint Handling Procedure
|
Complaint Received via Project Hotline |
Complaint Received via 1823 or from other government departments |
|||||
|
|
|
|
|
|||
|
Contractor notify ER, ET and IEC |
ER notify Contractor, ET and IEC |
|||||
|
|
|
|
|
|||
|
Contractor log complaint and date of receipt onto the complaint database. Contractor, ER and ET to conduct investigation of complaint |
||||||
|
|
|
|
|
|||
|
If complaint is considered not valid |
If complaint is found valid |
|||||
|
|
|
|
|
|||
|
ET or ER to reply the complainant if necessary |
Contractor to identify and implement remedial measures in consultation with the IEC, ET and ER. |
|||||
|
|
|
|
|
|||
|
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The ER, ET and IEC to review the effectiveness of the Contractor’s remedial measures and the updated situation; ET to undertake additional monitoring and audit to verify the situation if necessary, and oversee that circumstances leading to the complaint do not recur. ER to conduct further inspection as necessary. |
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If the complaint is referred by the EPD, the Contractor to prepare interim report on the status of the complaint investigation and follow-up actions stipulated above, including the details of the remedial measures and additional monitoring identified or already taken, for submission to EPD within the time frame assigned by the EPD |
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The ET to record the details of the complaint, results of the investigation, subsequent actions taken to address the complaint and updated situation including the effectiveness of the remedial measures, supported by regular and additional monitoring results in the monthly EM&A reports |
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4.2. Should non-compliance of the criteria occur, action in accordance with the Action Plan in Appendix D and Appendix E shall be carried out.
4.3. No exceedance of the Action and Limit Level of 1-hour TSP, 24-hour TSP and construction noise monitoring was recording during the reporting period.
4.4. No compliant or non-compliance was reported in the reporting month.
4.5. No notification of summons and prosecution was received in the reporting period.
4.6. Statistics on complaints, notifications of summons and successful prosecutions are summarized in Appendix O.
5.1. Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. In the reporting period, five (5) site inspections were carried out on 2, 9, 16, 23, 30 July 2020, along with bi-weekly inspection of the implementation of landscape and visual mitigation measures conducted on 2, 16, 30 July 2020.
5.2. One joint site inspection with IEC also undertaken on 16 July2020. Minor deficiency was observed during weekly site inspection. Key observations during the site inspections are summarized in Table 5.1.
Table 5.1 Site Observations
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Date |
Environmental Observations |
Follow-up Status |
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2 July 2020 |
1. Chemical containers were observed being stored without drip tray in Portion 1B. Drip tray has to be provided. |
1. Chemical drums were removed. |
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9 July 2020 |
1. Stockpile of cement was observed not being covered completely with impervious sheeting in Portion 1F. |
1. Bagged cement was covered by tarpaulin after use.
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16 July 2020 |
1. Colour of NRMM label for an excavator was observed being faded. A new one has to be provided. |
1. NRMM label was replaced. |
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23 July 2020 |
No major observation was found. |
- |
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30 July 2020 |
1. Colour of NRMM labels for excavators were observed being faded in Portion 1D and Portion 1B. Have to be replaced by new ones. |
1. NRMM labels were replaced. |
5.3. The Contractor had rectified all observation identified during environmental site inspections in the reporting period.
5.4. According to the EIA Study Report, Environmental Permit, contract documents and EM&A Manual, the mitigation measures detailed in the documents are implemented as much as practical during the reporting period. An updated Implementation Status of Environmental Mitigation Measures (EMIS) is provided in Appendix F.
6. Future Key Issues
6.1. Work to be undertaken in the next reporting month are:
· Tree Felling at Portion 1B, 1E
· Socket H-Pile at Portion 1D along Hoi Wang Road
· Removal of existing Steel Bridge at Portion 1B, 1E and 1G
· RC works for Vent Adit at Ch 0~60 (partial only) at Portion 0
· Pipe Pile Installation at D-wall and Vent Adit (CH 250~280) at Portion 1D, 1F and 10
· Jacking Pit Construction of Sewerage System at Portion 1B
· Remaining Watermain Installation at Portion 1B and 1D
· Pier Construction at Bridge G including Abutment G at Portion 1B
· Pier Construction at Bridge B2/C2 (C2P1, C2P2, B2P1) at Portion 1E
6.2. Potential environmental impacts arising from the above construction activities are mainly associated with dust, construction noise and waste management.
6.3. The tentative schedule of regular construction noise monitoring, 1-hour TSP and 24-hour TSP monitoring in the next reporting period is presented in Appendix P.
6.4. The construction programme for the Project for the next reporting month is presented in Appendix B.
7. Conclusion and Recommendations
7.1. This 18th monthly EM&A Report presents the EM&A works undertaken during the period from 1 July 2020 to 31 July 2020 in accordance with the EM&A Manual and the requirement under EP- 457/2013/C.
7.2. Air quality (including 1-hour TSP and 24-hour TSP) and noise impact monitoring were carried out in the reporting period. No exceedance of the Action and Limit Level was recorded for construction noise and air quality impact monitoring during the reporting month.
7.3. Due to the technical problem for HVS equipment on 24 July 2020 at Man Cheong Building (W-A6), 24-hour TSP dust monitoring was suspended. Equipment inspection was conducted and the problem was fixed on 25 July 2020. Supplementary 24-hour TSP dust monitoring was conducted on the same day.
7.4. Scheduled monitoring for 1-hour TSP remained unaffected, only the schedule of 24-hour TSP was changed.
7.5. Weekly environmental site inspections were conducted during the reporting period. Joint site inspection with IEC were carried out on 16 July 2020. Minor deficiency was observed during site inspection and was rectified within the specified deadlines. The environmental performance of the Project was therefore considered satisfactory.
7.6. No compliant or non-compliance was reported in the reporting month.
7.7. No notification of summons or prosecution was received in the reporting month.
7.8. The ET will keep track on the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures.
