Executive Summary

Introduction

A1. Penta-Ocean - Concentric Joint Venture (POCJV) is contracted to carry out the Mainlaying in Tseung Kwan O under Contract No. 13/WSD/16 (hereinafter known as “the Project”).

A2. In accordance with the Environmental Monitoring and Audit (EM&A) Manual for the Project, EM&A works should be carried out by Environmental Team (ET), Acuity Sustainability Consulting Limited (ASCL), during the construction phase of the Project.

A3. This is the 25^thMonthly EM&A Report, prepared by ASCL, for the Project summarizing the monitoring results and audit findings of the EM&A programme at and around Tseung Kwan O (TKO) during the reporting period from 1 August 2020 to 31 August 2020.

A4. The EM&A programme for this contract has covered environmental monitoring on construction noise level at selected NSRs and Contractor’s environmental performance auditing in the aspects of construction dust, construction noise, water quality, waste management, Landscape and Visual and Ecology.

Summary of Main Works Undertaken & Key Mitigation Measures Implemented

A5. Key works carried out in this reporting period for the Project included the followings:

Location	Works Conducted in the reporting month
Portion H of the Project Site	· Pipes had been laid from CH.CT0+07~CH.CT2+64. · Concreting work of the top slab and wall of DN900 HSV chamber at CH.CA4+30 was completed in August 2020. · Construction of washout chamber and DAV/IT combined chamber were completed.
Portion J of the Project Site	· Laying work of 30 degrees bend DN1200 MS pipe at CH.A6+53 was completed. · Backfilling and road reinstatement work of the bus lay-by and carriageway were completed at CHA12+45. · Sheetpiling work in pit A was completed. · Excavation to 9mBG and installation of 6th layer of waling and strut were completed at Pit C. · Pipes were laid between CH.FB1+98 to CH.FB3+27 and was in progress between CH.FB3+27 to CH.FB3+60 at Area A. · Trench excavation and Pipe mainlaying works were completed at CH.FC2+16 1^st work front at the cycle track. · Pipe mainlaying and reinstatement works were completed at CH.FC5+49 2^nd work front at the cycle track. · Pipes were laid between CH.FC13+26 and Ch.FC12+05 in Area B. Backfilling work and reinstatement of existing geotextile of these trenches were in-progress. · Excavation work for 1^st layer of struts and waling was in-progress at Pit O. · Excavation work for 2^nd layer of struts and waling was in-progress at Pit M. · Excavation work for 1^st layer of struts and waling was in-progress at Pit N. · The driving work of sheet piles at Pit P was in-progress.

Location

Works Conducted in the reporting month

Portion H of the Project Site

· Pipes had been laid from CH.CT0+07~CH.CT2+64.

· Concreting work of the top slab and wall of DN900 HSV chamber at CH.CA4+30 was completed in August 2020.

· Construction of washout chamber and DAV/IT combined chamber were completed.

Portion J of the Project Site

· Laying work of 30 degrees bend DN1200 MS pipe at CH.A6+53 was completed.

· Backfilling and road reinstatement work of the bus lay-by and carriageway were completed at CHA12+45.

· Sheetpiling work in pit A was completed.

· Excavation to 9mBG and installation of 6th layer of waling and strut were completed at Pit C.

· Pipes were laid between CH.FB1+98 to CH.FB3+27 and was in progress between CH.FB3+27 to CH.FB3+60 at Area A.

· Trench excavation and Pipe mainlaying works were completed at CH.FC2+16 1^st work front at the cycle track.

· Pipe mainlaying and reinstatement works were completed at CH.FC5+49 2^nd work front at the cycle track.

· Pipes were laid between CH.FC13+26 and Ch.FC12+05 in Area B. Backfilling work and reinstatement of existing geotextile of these trenches were in-progress.

· Excavation work for 1^st layer of struts and waling was in-progress at Pit O.

· Excavation work for 2^nd layer of struts and waling was in-progress at Pit M.

· Excavation work for 1^st layer of struts and waling was in-progress at Pit N.

· The driving work of sheet piles at Pit P was in-progress.

A6. The major environmental impacts brought by the above construction works include:

· Construction dust and noise generation saw cutting of concrete surface, mainlaying of pipes, sheet pilling, excavation works and installation works.

· Waste generation from the construction activities

A7. The key environmental mitigation measures implemented for the Project in this reporting period associated with the above construction works include:

· Dust suppression by regular wetting and water spraying for trial pits works and mainlaying of pipes and saw cutting of the concrete surfaces

· Reduction of noise from equipment and machinery on-site

· Sorting and storage of general refuse and construction waste

Summary of Exceedance & Investigation & Follow-up

A8. No noise monitoring was conducted in the reporting month due to the overly distant monitoring station from the works location. No project-related exceedance of the Action Level was recorded during the reporting period.

Complaint Handling and Prosecution

A9. No project-related environmental complaint was received during the reporting period.

A10. Neither notifications of summons nor prosecution was received for the Project.

Reporting Change

A11. There were no changes reported that may affect the on-going EM&A programme.

Summary of Upcoming Key Issues and Key Mitigation Measures

A12. Key works in September 2020 (the next reporting month) for the Project will include the followings:

Location	Works Conducting in the next reporting month
Portion H of the Project Site	· Construction of DN900 HSV chamber near SENTX (SENT Landfill Extension) Entrance including installation of DN150 by-pass pipe and casting of thrust block concrete will be continued in September 2020. · Preparation work for the construction of 137PitA, 137PitB and 137pitC near SENTX Entrance Gate will be continued. · Casting of tee thrust block concrete at washout chamber will be continued in September 2020. · Preparation work for the water pressure test of DN1200 MS pipe in Area 137 will be continued. · Pipe Mainlaying works will be continued at the proposed location of the desalination plant.
Portion J of the Project Site	· Continue 3 nos. of work fronts implemented as scheduled for the open-trench at CH.A2+14, CH. A6+53 to 12+14. · Pipe jacking at working Pit A, Pit B and Pit C will be continued at CH.A 13+70, CH.A 16+00 and CH.A 19+26. · Grouting work in Pit A at Wan Po Road will be commenced. · Grouting and following excavation works in Pit B at Wan Po Road will be continued. · Excavation work and installation of temporary shoring system (7^th layer of waling) in working Pit C in Wan Po Road will be continued. · Mainlaying work at Landfill Stage 1’s cycle track will be continued between CH.FC2+16 and CH.FC5+83. · Mainlaying works in Area A and B in Landfill Stage 1 will be continued. · Excavation and ELS installation work at Pit O near HK Velodrome will be continued. · Excavation and ELS installation work in Pit M will be continued. · Excavation and ELS installation work in Pit N will be continued. · Inspection pit excavation at STLA (Simplified Temporary Land Allocation) land near Pung Loi Road will be continued. · Sheet Pilling Works in Pit P near Po Shun Road will be continued.

Location

Works Conducting in the next reporting month

Portion H of the Project Site

· Construction of DN900 HSV chamber near SENTX (SENT Landfill Extension) Entrance including installation of DN150 by-pass pipe and casting of thrust block concrete will be continued in September 2020.

· Preparation work for the construction of 137PitA, 137PitB and 137pitC near SENTX Entrance Gate will be continued.

· Casting of tee thrust block concrete at washout chamber will be continued in September 2020.

· Preparation work for the water pressure test of DN1200 MS pipe in Area 137 will be continued.

· Pipe Mainlaying works will be continued at the proposed location of the desalination plant.

Portion J of the Project Site

· Continue 3 nos. of work fronts implemented as scheduled for the open-trench at CH.A2+14, CH. A6+53 to 12+14.

· Pipe jacking at working Pit A, Pit B and Pit C will be continued at CH.A 13+70, CH.A 16+00 and CH.A 19+26.

· Grouting work in Pit A at Wan Po Road will be commenced.

· Grouting and following excavation works in Pit B at Wan Po Road will be continued.

· Excavation work and installation of temporary shoring system (7^th layer of waling) in working Pit C in Wan Po Road will be continued.

· Mainlaying work at Landfill Stage 1’s cycle track will be continued between CH.FC2+16 and CH.FC5+83.

· Mainlaying works in Area A and B in Landfill Stage 1 will be continued.

· Excavation and ELS installation work at Pit O near HK Velodrome will be continued.

· Excavation and ELS installation work in Pit M will be continued.

· Excavation and ELS installation work in Pit N will be continued.

· Inspection pit excavation at STLA (Simplified Temporary Land Allocation) land near Pung Loi Road will be continued.

· Sheet Pilling Works in Pit P near Po Shun Road will be continued.

A13. The major environmental impacts brought by the above construction works will include:

· Construction dust and noise generation from inspection pit excavation works, pipes mainlaying, grouting, sheet pile driving and open-trench works

· Waste generation from construction activities

A14. The key environmental mitigation measures for the Project in the coming reporting period associated with the above construction works will include:

· Dust suppression by regular wetting and water spraying for inspection pit excavation works, pipes mainlaying, grouting, sheet pile driving and open-trench works

· Reduction of noise from equipment and machinery on-site

· Sorting and storage of general refuse and construction waste

Party	Position	Name	Telephone no.
Penta-Ocean -Concentric Joint Venture	Environmental Officer	Calvin Chik	9863 5630
Acuity Sustainability Consulting Limited	Environmental Team Leader	Jacky Leung	2698 6833
ANewR Consulting Limited	Independent Environmental Checker	James Choi	2618 2831

Location of works	Construction works undertaken	Remarks on progress
Portion H of the Project Site	· Pipes had been laid from CH.CT0+07~CH.CT2+64. · Concreting work of the top slab and wall of DN900 HSV chamber at CH.CA4+30 was completed in August 2020. · Construction of washout chamber and DAV/IT combined chamber were completed.	Completed
Portion J of the Project Site	· Laying work of 30 degrees bend DN1200 MS pipe at CH.A6+53 was completed. · Backfilling and road reinstatement work of the bus lay-by and carriageway were completed at CHA12+45. · Sheetpiling work in pit A was completed. · Excavation to 9mBG and installation of 6th layer of waling and strut were completed at Pit C. · Trench excavation and Pipe mainlaying works were completed at CH.FC2+16 1^st work front at the cycle track. · Pipe mainlaying and reinstatement works were completed at CH.FC5+49 2^nd work front at the cycle track.	Completed
· Pipes were laid between CH.FC13+26 and Ch.FC12+05 in Area B. Backfilling work and reinstatement of existing geotextile of these trenches were in-progress. · Pipes were laid between CH.FB1+98 to CH.FB3+27 and was in progress between CH.FB3+27 to CH.FB3+60 at Area A. · Pipes were laid between CH.FC13+26 and Ch.FC12+05 in Area B. Backfilling work and reinstatement of existing geotextile of these trenches were in-progress. · Excavation work for 1^st layer of struts and waling was in-progress at Pit O. · Excavation work for 2^nd layer of struts and waling was in-progress at Pit M. · Excavation work for 1^st layer of struts and waling was in-progress at Pit N. · The driving work of sheet piles at Pit P was in-progress.	In progress

1.5 Summary of Environmental Status

1.5.1 A summary of the valid permits, licences, and or notifications on environmental protection for this Project is presented in Table 1.3.

Table 1.3 Summary of the Status of Valid Environmental Licence, Notification, Permit and Documentations

Permit/ Licences/ Notification	Reference	Validity Period	Remarks
Variation of Environmental Permit	EP no.: EP-503/2015/A	Throughout the Contract	-
Notification of Construction Works under the Air Pollution Control (Construction Dust) Regulation (Form NA)	Ref no.: 423775	Throughout the Contract	-
Chemical Waste Producer Registration	WPN: 5213-839-P3287-01	Throughout the Contract	-
Billing Account for Disposal of Construction Waste	A/C no.: 7029491	Throughout the Contract	-
Water Discharge Licence	WT00032336-2018	Until 31 Dec 2023	-
Construction Noise Permit	GW-RE0563-20	Until 28 Sep 2020	-
Construction Noise Permit (Hong Kong Velodrome)	GW-RE0364-20	Until 17 Nov 2020	-

1.5.2 The status for all environmental aspects is presented Table 1.4.

Table 1.4 Summary of Status for Key Environmental Aspects under the EM&A Manual

Parameters	Status
Noise
Baseline Monitoring	The baseline noise monitoring result has been reported in Baseline Monitoring Report and submitted to EPD under VEP Condition 3.4.
Impact Monitoring	On-going
Waste Management
Mitigation Measures in Waste Monitoring Plan	On-going
Landfill Gas
Impact Monitoring	On-going
Environmental Audit
Site Inspection	On-going

1.5.3 Other than the EM&A works by ET, regular environmental management meetings were conducted in order to enhance environmental awareness and closely monitor the environmental performance of the contractors.

1.5.4 The EM&A programme has been implemented in accordance with the recommendations presented in the approved EIA Report and the EM&A Manual. A summary of implementation status of the environmental mitigation measures for the construction phase of the Project during the reporting period is provided in Appendix C.

2. Noise Monitoring

2.1 Monitoring Requirements

2.1.1 To ensure no adverse noise impact, noise monitoring is recommended to be carried out within 300m radius from the nearby noise sensitive receivers (NSRs), during construction phase. The NSRs selected as monitoring station are (i) NSR4 – Creative Secondary School, (ii) NSR24 – PLK Laws Foundation College, and (iii) NSR31 – School of Continuing and Professional Studies – CUHK respectively.

2.1.2 In accordance with the EM&A Manual, baseline noise level at the noise monitoring stations were established as presented in the Baseline Monitoring Report. Impact noise monitoring will be conducted once per week in the form of 30-minute measurements Leq, L10 and L90 levels recorded at each monitoring station between 0700 and 1900 on normal weekdays.

2.1.3 Referring to EM&A manual Section 4.1.2, the impact noise monitoring should be carried out at all the designated monitoring stations when there are project-related construction activities undertaken within a radius of 300m from the monitoring stations.

2.1.4 No impact monitoring for noise impact was conducted in the reporting month due to the overly distant monitoring station from the works location, where they were farther than 1 km from the closet monitoring station NSR4 to the works location.

2.2 Noise Monitoring Parameters, Time, Frequency

2.2.1 Impact noise monitoring will be conducted weekly in the reporting period between 0700-1900 on normal weekdays. No construction works were carried out during 1900-0700 in all days or any time on Sundays or general holidays during the reporting period.

2.2.2 Construction noise level measured in terms of the A-weighted equivalent continuous sound pressure level (LAeq). Leq_30min was used as the monitoring parameter for the time period between 0700 and 1900 on normal weekdays. Table 2.1 summarizes the monitoring parameters, frequency and duration of the impact noise monitoring. The monitoring schedule is provided in Appendix D.

Table 2.1 Noise Monitoring Parameters, Time, Frequency and Duration

Time

Frequency

Duration

Parameters

Daytime:

0700-1900

Once per week

Continuously in

L_{eq
5}_min/L_{eq 30min}(average of 6 consecutive L_{eq 5min})

L_eq, L₁₀ & L₉₀

2.3 Noise Monitoring Locations

2.3.1 The monitoring locations should normally be made at a point 1m from the exterior of the NSRs building façade and be at a position 1.2m above the ground. A correction of +3dB(A) should be made to the free-field measurements.

2.3.2 According to the environmental findings detailed in the EIA report and Baseline Monitoring Report, the designated locations for the construction noise monitoring are listed in Table 2.2 below.

Table 2.2 Noise Monitoring Location

NSR ID	Noise Sensitive Receivers	Monitoring Location	Position
NSR 4	Creative Secondary School	Roof Floor	1 m from facade
NSR 24	PLK Laws Foundation College	Pedestrian Road on Ground Floor	Free-field
NSR 31	School of Continuing and Professional Studies - CUHK	Roof Floor	1 m from facade

2.3.3 Three noise monitoring locations for impact monitoring at the nearby sensitive receivers are shown in Figure 2.1-2.3.

Figure 2.1 NSR4 Creative Secondary School

Figure 2.2 NSR24 PLK Laws Foundation College

Figure 2.3 NSR31 School of Continuing and Professional Studies - CUHK

2.4 Impact Monitoring Methodology

2.4.1 Integrated sound level meter shall be used for the noise monitoring. The meter shall be in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications. Immediately prior to and following each noise measurement the accuracy of the sound level meter shall be checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Measurements may be accepted as valid only if the calibration level before and after the noise measurements agree to within 1.0 dB(A). Calibration certificates of the instruments used are presented in Appendix E. Appendix E is intentionally left blank since no impact monitoring equipment was used in the reporting month.

2.4.2 Noise measurements shall not be made in the presence of fog, rain, wind with a steady speed exceeding 5 m/s or wind with gusts exceeding 10 m/s. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m/s.

Table 2.3 Impact Noise Monitoring Equipment

Equipment	Brand and Model	Detection Limit
Sound Level Meter	Nti XL2	30-130 dB(A)
Sound Level Meter Calibrator	Rion NC-74	Nil
Pocket Wind Meter Anemometer	Kestrel 1000 Wind Meter	Nil

2.5 Action and Limit Levels

2.5.1 The Action/Limit Levels are in line with the criteria of Practice Note for Professional Persons (ProPECC PN 2/93) “Noise from Construction Activities – Non-statutory Controls” and Technical Memorandum on Environmental Impact Assessment Process issued by HKSAR Environmental Protection Department [“EPD”] under the Environmental Impact Assessment Ordinance, Cap 499, S.16 are presented in Table 2.4.

Table 2.4 Action and Limit Levels for Noise

Time Period

Action

Limit (dB(A))

0700-1900 on normal weekdays

When one documented complaint is received from any one of the noise sensitive receivers

· 70 dB(A) for school and

· 65 dB(A) during examination period

Notes:

(a) Limits specified in the GW-TM and IND-TM for construction and operation noise, respectively.

2.5.2 If exceedances were found during noise monitoring, the actions in accordance with the Event and Action Plan shall be carried out according to Appendix F.

2.6 Monitoring Results and Observations

2.6.1 Referring to EM&A manual Section 4.1.2, no impact monitoring for noise impact was conducted in the reporting period.

2.6.2 Detailed monitoring results are presented in Appendix G. Appendix G is intentionally left blank since there is no impact monitoring for noise impact in the reporting month.

3. Waste management

3.1 The waste generated from this Project includes inert construction and demolition (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 3.1. Details of cumulative waste management data are presented as a waste flow table in Appendix H.

Table 3.1 Quantities of waste generated from the Project

Reporting period	Quantity
	Inert C&D Materials (in ‘000m3)	Chemical Waste (in ‘000kg)	Non-inert C&D Materials
			Others, e.g. General Refuse disposed at Landfill (in ‘000m3)	Recycled materials
				Paper/card board (in ‘000kg)	Plastics (in ‘000kg)	Metals (in ‘000kg)
August-20	1.272	0.000	0.000	0.048	0.000	0.000

4. Landfill gas monitoring

4.1 Monitoring Requirement

4.1.1 In accordance with Section 11 of the EM&A Manual, monitoring of landfill gas is required for construction works within the 250m Consultation Zone. Part of the desalination plant and the indicative area of natural slope mitigation works fall within the SENT Landfill Extension Consultation Zone; and part of the 1,200 mm diameter fresh water mains along Wan Po Road falls within the SENT Landfill and SENT Landfill Extension Consultation Zones, TKO Stage II/III Restored Landfill and TKO Stage I Restored Landfill Consultation Zones.

4.2 Monitoring Location

4.2.1 Monitoring of oxygen, methane, carbon dioxide and barometric pressure was performed for excavations at 1m depth or more within the consultation Zone. In this reporting period, 592 times of monitoring was recorded.

4.2.2 During construction of works within the consultation zones, excavations of 1m depth or more was monitored:

· At the ground surface before excavation commences;

· Immediately before any worker enters the excavation;

· At the beginning of each working day for the entire period the excavation remains open; and

· Periodically through the working day whilst workers are in the excavation.

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

· Directly after the excavation has been completed; and

· Periodically whilst the excavation remains open.

4.2.4 The area required to be monitored for landfill gas in the reporting period are shown in Figure 4.1 to Figure 4.14.

Figure 4.1 Monitoring Location - CH.A 6+70

Figure 4.2 Monitoring Location – CH.A 12+30 ~ 12+50

Figure 4.3 Monitoring Location – CH.A 13+50 ~ 14+00 (Pit A)

Figure 4.4 Monitoring Location – CH.A 15+50 ~16+50 (Jacking Pit B)

Figure 4.5 Monitoring Location – CH.A 19+15 ~19+50 (Pit C)

Figure 4.6a Monitoring Location – Mau Wu Tsai 1

Figure 4.6b Monitoring Location – Mau Wu Tsai 2

Figure 4.6c Monitoring Location – Mau Wu Tsai 3

Figure 4.7 Monitoring Location –CH.CA 0+00 to CH.CA 04+25 (CH.C 7+40 ~ 12+00)

Figure 4.8a Monitoring Location – Pit 137A (137 Pit A)

Figure 4.8b Monitoring Location – Pit 137B (137 Pit B)

Figure 4.8c Monitoring Location – Pit 137C (137 Pit C)

Figure 4.9 Monitoring Location – Jacking Pit F

Figure 4.10a Monitoring Location – Landfill Stage 1 (Area B01-B02)

Figure 4.10b Monitoring Location – Landfill Stage 1 (FC0+50-FC0+92)

Figure 4.10c Monitoring Location – Landfill Stage 1 (FC4+30-FC5+30)

Figure 4.11a Monitoring Location – Pit L-M-N, J1A, K

Figure 4.11b Monitoring Location – Pit N-O-P

Figure 4.11c Monitoring Location – Pit Q

Figure 4.12 Po Lam South Road

Figure 4.13 Monitoring Location – Area A02

Figure 4.14 Monitoring Location – WPR IP1

Figure 4.15a Monitoring Location - CH.CT 0+07 ~ 2+58

Figure 4.15b Monitoring Location - CH.CT 2+58 ~ 2+66

4.3 Monitoring Parameters

4.3.1 LFG monitoring was carried out to identify any migration between the landfill and the Project and to ensure the safety of the construction, operation and maintenance personnel working on-site, visitors and any other person within the Project area.

4.3.2 The following parameters were monitored:

· Methane.

· Oxygen.

· Carbon Dioxide.

· Barometric Pressure.

4.4 Action and Limit Level

4.4.1 Action and Limit Level are provided in Table 4.1.

Table 4.1 Action and Limit Level for Landfill Gas Monitoring Equipment

Parameters	Action Level	Limit Level
Oxygen (O2)	<19% O2	<19% O2
Methane (CH4)	>10% LEL	>80% LEL
Carbon Dioxide (CO2)	>0.5% CO2	>1.5% CO2

4.5 Monitoring Equipment

4.5.1 Landfill Gas monitoring was carried out using intrinsically-safe, portable multi-gas monitoring instruments. The gas monitoring equipment is:

· Comply with the Landfill Gas Hazard Assessment Guidance Note as intrinsically safe;

· Capable of continuous barometric pressure and gas pressure measurements;

· Normally operate in diffusion mode unless required for spot sampling, when it should be capable of operating by means of an aspirator or pump;

· Have low battery, fault and over range indication incorporated;

· Store monitoring data, and shall be capable of being down-loaded directly;

· Measure in the following ranges:

methane	4.5.2 0-100% Lower Explosion Limit (LEL) and 0-100% v/v;
oxygen	4.5.3 0-25% v/v;
carbon dioxide	0-100% v/v; and
barometric pressure	mBar (absolute)

· alarm (both audibly and visually) in the event that the concentrations of the following are exceeded:

methane	4.5.4 >10% LEL;
oxygen	4.5.5 >0.5% by volume; and
carbon dioxide	<19% by volume
barometric pressure	mBar (absolute)

4.5.2 Monitoring Equipment used in the reporting period are summarised in Table 4.2. The Landfill Gas monitoring equipment calibration certificate is presented in Appendix I.

Table 4.2 Landfill Gas Monitoring Equipment

Equipment	Brand and Model	Calibration Expiry Date
Portable Gas Detector	QRAE II	28 August 2020
Portable Gas Detector	QRAE III	27 July 2021

4.6 Monitoring Results

4.6.1 In the reporting period, construction works within the consultation zones, excavations of 1m depth or more was monitored. Landfill gas monitoring was carried out by the Registered Safety Officer by the Contractor at the excavation locations for 592 times. All the measured results were presented in Appendix J and within the Action and Limit Levels.

5. Summary of Monitoring Exceedance, Complaints, Notification of Summons and Prosecutions

5.1 The Environmental Complaint Handling Procedure is shown in below Figure 5.1:

complaint handling

Figure 5.1 Environmental Complaint Handling Procedure

5.2 No noise monitoring was conducted during the reporting period since there are no project-related construction activities undertaken within a radius of 300m from the monitoring locations.

5.3 No project-related exceedance of the Action Level was recorded during the reporting period.

5.4 No notification of summons and prosecution was received in the reporting period.

5.5 Statistics on complaints and regulatory compliance are summarized in Appendix K.

6. EM&A Site Inspection

6.1 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, site inspections were carried out on 6, 13, 20 and 24 at the site portions list in Table 6.1 below.

Table 6.1 Site Inspection Record

Date	Inspected Site Portion	Time
06 August 2020	Portion J	9:36am – 11:20am
13 August 2020	Portion J and H	9:15am – 12:30pm
20 August 2020	Portion J	9:35am – 12:00pm
24 August 2020	Portion J	9:18am – 11:30am

6.2 One joint site inspection with IEC was carried out on 24 August 2020.

6.3 Minor deficiencies were observed during weekly site inspection. Key observations during the site inspections are summarized in Table 6.2.

Table 6.2 Site Observations

Date	Environmental Observations	Follow-up Status
06 August 2020	1. Chemicals were not placed inside a drip tray at Pit C. 2. Dust suppression mitigations were not implemented at CHA6+64. 3. Gully was not protected by a geo-textile at CHA6+64. 4. Environmental permit was not observed at the vehicle entrance/exit at the Hong Kong Velodrome.	1. Chemicals were placed inside a drip tray. 2. Dusty materials were removed. 3. Gully was protected by a geo-textile at CHA6+64. 4. Environmental permit was added at the vehicle entrance/exit at the Hong Kong Velodrome.
13 August 2020	1. Chemicals were not placed inside a drip tray at Pit C. 2. Drainage system was not fully protected by a geo-textile at CHA6+64. 3. Construction boundaries were not protected fully by sandbags at Jacking Pit A. 4. Construction exit/entrance was not free from dusty materials at CHA12+50.	1. Chemicals were placed inside a drip tray. 2. Gully was fully protected by a geo-textile at CHA6+64. 3. Construction boundaries were protected fully by sandbags at Jacking Pit A. 4. Construction exit/entrance was free from dusty materials at CHA12+50.
20 August 2020	1. Chemicals were not placed inside the drip tray at Pit C and Landfill Stage 1 Area A. 2. Gully was not protected fully by sandbags and geo-textile at CHA6+64. 3. Construction exit/entrance was not free from dusty materials at CHA12+50. 4. Construction boundaries were not protected fully by sandbags at Pit A.	1. Chemicals were removed or placed inside the drip tray at Pit C and Landfill Stage 1 Area A. 2. Gully was protected fully by sandbags and geo-textile at CHA6+64. 3. Construction exit/entrance was cleaned at CHA12+50. 4. Construction boundaries were protected fully by sandbags at Pit A.
24 August 2020	1. The contractor was reminded to place an environmental permit at the site entrance/exit at Hong Kong Velodrome.	1. The environmental permit was placed at the site entrance/exit at Hong Kong Velodrome.

6.4 According to the EIA Study Report, Environmental Permit, contract documents and EM&A Manual, the mitigation measures detailed in the documents should be implemented as much as practical during the reporting period. An updated Implementation Status of Environmental Mitigation Measures (EMIS) is provided in Appendix C.

6.5 Site inspection proforma of the reporting period is provided in Appendix L.

7. Future Key Issues

7.1 Key works that will be anticipated in the next reporting period for the Project are shown in Table 7.1.

Table 7.1. Key works for the next reporting month

Location	Works Conducting in the next reporting month
Portion H of the Project Site	· Construction of DN900 HSV chamber near SENTX (SENT Landfill Extension) Entrance including installation of DN150 by-pass pipe and casting of thrust block concrete will be continued in September 2020. · Preparation work for the construction of 137PitA, 137PitB and 137pitC near SENTX Entrance Gate will be continued. · Casting of tee thrust block concrete at washout chamber will be continued in September 2020. · Preparation work for the water pressure test of DN1200 MS pipe in Area 137 will be continued. · Pipe Mainlaying works will be continued at the proposed location of the desalination plant.
Portion J of the Project Site	· Continue 3 nos. of work fronts implemented as scheduled for the open-trench at CH.A2+14, CH. A6+53 to 12+14. · Pipe jacking at working Pit A, Pit B and Pit C will be continued at CH.A 13+70, CH.A 16+00 and CH.A 19+26. · Grouting work in Pit A at Wan Po Road will be commenced. · Grouting and following excavation works in Pit B at Wan Po Road will be continued. · Excavation work and installation of temporary shoring system (7^th layer of waling) in working Pit C in Wan Po Road will be continued. · Mainlaying work at Landfill Stage 1’s cycle track will be continued between CH.FC2+16 and CH.FC5+83. · Mainlaying works in Area A and B in Landfill Stage 1 will be continued. · Excavation and ELS installation work at Pit O near HK Velodrome will be continued. · Excavation and ELS installation work in Pit M will be continued. · Excavation and ELS installation work in Pit N will be continued. · Inspection pit excavation at STLA (Simplified Temporary Land Allocation) land near Pung Loi Road will be continued. · Sheet Pilling Works in Pit P near Po Shun Road will be continued.