Environmental Team for Hung Shui Kiu/Ha Tsuen New Development Area Stage 1 Works

EXECUTIVE SUMMARY

This is the 1st Monthly Environment Monitoring and Audit (EM&A) Report for Hung Shui Kiu/ Ha Tsuen New Development Area Stage 1 Works Site Formation and Engineering Infrastructure (the Project). This report was prepared by Acuity Sustainability Consulting Limited under Service Contract No. WD/02/2021 Environmental Team for Hung Shui Kiu / Ha Tsuen New Development Area Stage 1 Works Site Formation and Engineering Infrastructure (hereinafter called the Service Contract). This report documents the findings of EM&A works during the reporting period from 5 to 31 December 2022.

The project construction was commenced on 5 December 2022 and the construction phase EM&A programme started on 6 December 2022.

Key Construction Works in the Reporting Period

A summary of construction activities undertaken during the reporting period is presented below:

· Construction of Box Culvert at Road D1

Environmental Monitoring and Audit Programme

The monthly EM&A programme was undertaken by the ET in accordance with the Updated EM&A Manual. A summary of the monitoring and audit activities during the reporting period is presented below:

Table I Summary of EM&A activities in the Reporting Period

EM&A Activities	Date
Water Quality Monitoring	6, 8, 10, 13, 15, 17, 20, 22, 24, 26, 28 and 30 Dec 2022
Weekly Environmental Site Inspection	9, 16, 23 and 28 Dec 2022

Breaches of Action and Limit Levels

Summary of the environmental exceedances of the reporting month is tabulated in Table II.

Table II Summary of Exceedance in the Reporting Period

Environmental Monitoring	Parameter	No. of non-project related exceedances		Total No. of non-project related exceedances	No. of exceedances related to the the project		Total No. of exceedance related to the project
Environmental Monitoring	Parameter	AL	LL	Total No. of non-project related exceedances	AL	LL	Total No. of exceedance related to the project
Water Quality	pH	0	0	0	0	0	0
	DO	14	14	28	0	0	0
	Turbidity	1	2	3	0	0	0
	SS	0	1	1	0	0	0

Water Quality

All water quality monitoring was conducted as scheduled in the reporting period. Fourteen (14) action level exceedances and fourteen (14) limit level exceedances for dissolved oxygen were recorded. One (1) action level exceedance and two (2) limit level exceedances for turbidity were recorded, and one (1) limit level exceedance for Suspended Solids was recorded. After investigation, all exceedances were considered non-project related.

Complaint Log

No environmental complaint was received in the reporting period.

Notification of Summons and Successful Prosecutions

No notification of summons or successful prosecutions was received in the reporting period.

Reporting Changes

There was no reporting change in the reporting period.

Future Key Issues

The major site activities for the coming months are summarized below:

· Construction of Box Culvert

· Diversion of watermains

1 Introduction Project Background

1.1. The HSK/HT NDA occupies an area of approximately 714 ha and is located in the north-western part of the New Territories, midway between Tuen Mun and Tin Shui Wai New Towns. It is bounded by Tin Ying Road/ Ping Ha Road/ Kiu Hung Road to the east, Castle Peak Road to the south, Kong Sham Western Highway (KSWH) to the west, and Tin Ha Road, Lau Fau Shan Road and hillslopes along Deep Bay Road to the north. In the wider context, the proposed Project is strategically located in close proximity to Shenzhen, particularly Shenzhen Bay Control Point, Qianhai, and Shekou and efficiently linked with the Greater Pearl River Delta (PRD) region. The KSWH and the possible highway connecting the Project area with the Tuen Mun - Chek Lap Kok Link, the Hong Kong International Airport, Kwai Tsing Container Terminals, and the Hong Kong-Zhuhai-Macao Bridge and its Boundary Crossing facilities. New strategic highway infrastructure connecting the Project area with the urban area will also be planned to address the long-term development needs of North West New Territories (NWNT). The proposed West Rail Hung Shui Kiu Station (HSK Station), with its alignment traversing the Project allows convenient and efficient access to and from the Project area.

1.2. The works under HSK/HT NDA Stage 1 works comprises the construction of interim section of new distributor road (Road D1) (hereinafter call the Project) that is a designated project (DP) (defined under item A1 in Schedule 2 of the Environmental Impact Assessment Ordinance) connecting the site for the first batch of multi-storey buildings (MSBs) at Sites 3-6, 3-7 and 3-8 to the existing Ha Tsuen Roundabout of KSWH.

1.3. The HSK/HT NDA Stage 1 works would be implemented under a fast track programme, involving various complex tasks for providing infrastructure and forming the five development sites to be conducted in parallel, so as to tie in with operation of the development MSBs or other land-efficient means and population intake of the village resite house in 2025 tentatively.

1.4. The scope of works covered by Public Works Programme (PWP) Item No. 7796CL comprise the followings:

(i) Site formation works for Site 2-18, Site 2-19, Site 3-6, Site 3-7 and Site 3-8;

(ii) Land decontamination works including ground investigation works for Site 2-18, Site 2-19, Site 3-6, Site 3-7 and Site 3-8 and other areas within the boundaries of the site;

(iii) Construction of a district distributor road connecting to the existing interchange underneath KSWH, construction of local roads, widening of a section of Fung Kong Tsuen Road and associated junction/ road improvements; and

(iv) Engineering infrastructure works comprising sewerage works (including a pumping station), drainage works (including a detention pond), waterworks and landscaping works.

1.5. Pursuant to the Environmental Impact Assessment Ordinance (EIAO), the Director of Environmental Protection Department (EPD) granted the Environmental Permits (Nos.: EP-526/2017, EP-527/2017, EP-528/2017, EP-529/2017, EP-530/2017 and EP-531/2017) to the CEDD for the Project. The HSK/HT NDA Stage 1 works comprise the interim section of Road D1 that is governed under Environmental Permit No. EP-528/2017. No other DPs are identified within the scope of HSK/HT NDA Stage 1 works.

1.6. Acuity Sustainability Consulting Limited (ASCL) is commissioned by Civil Engineering and Development Department (CEDD) to undertake the Environmental Team (ET) services as required and/or implied, both explicitly and implicitly, in the Environmental Permit (EP), Environmental Impact Assessment (EIA) Report (Register No. AEIAR-203/2016) and Environmental Monitoring and Audit (EM&A) Manual for the Project; and to carry out the EM&A programme in fulfillment of the EIA Reports, EM&A requirements under Service Contract No. WD/02/2021.

1.7. For construction phase of the Project, the construction has been commenced on 5 December 2022 and the construction phase EM&A programme was started on 6 December 2022.

1.8. This is the 1st Monthly EM&A Report summarizing the key findings of the construction phase EM&A programme from 6 December to 31 December 2022 (the reporting period) and is submitted to fulfill the requirements in Condition 3.4 of EP-528/2017 and Section 15.3 of the Updated EM&A Manual of the Project.

Project Organization

1.9. Different parties with different levels of involvement in the Project organization include:

· Project Proponent Civil Engineering and Development Department (CEDD)

· Supervisor / Engineers Representative (ER) Mott MacDonald Hong Kong Limited

· Contractor - China Geo-Engineering Corporation

· Environmental Team (ET) Acuity Sustainability Consulting Limited

· Independent Environmental Checker (IEC) Lam Environmental Services Limited

1.10. The key personnel contact names and numbers are summarized in Appendix B.

Construction Works Programme and Construction Works Area

1.11. The construction works commenced on 5 December 2022. The construction works programme and the construction works area of the Project are shown in Appendix A and Figure 1 respectively. A summary of construction activities undertaken during this reporting period is presented below:

· Construction of Box Culvert at Road D1

License, Notifications and Permits

1.12. A summary of the relevant permits, licences, and/or notifications on environmental protection for this Project is presented in Table 1.1.

Table 1.1 Status of Environmental License, Notifications and Permits

Permit / License No.	Valid Period		Status
Permit / License No.	From	To	Status
Environmental Permit
EP-528/2017	21/02/2017	N/A	Valid
Notification pursuant to Air Pollution Control (Construction Dust) Regulation
467008	29/04/2021	N/A	Valid
Billing Account for Disposal of Construction Waste
7040500	13/05/2021	N/A	Valid
Registration of Chemical Waste Producer
467007	29/04/2021	N/A	Valid
Effluent Discharge License under Water Pollution Control Ordinance
N/A	N/A	N/A	Under application
Construction Noise Permit (CNP)
N/A	N/A	N/A	N/A

Submission Status under Environmental Permit

1.13. The summary of submission status under Environmental Permit EP-528/2021 was presented in Appendix K.

2 Air Quality Monitoring Requirement

2.1. In accordance with the Updated EM&A Manual, the ET shall carry out impact monitoring during the construction phase of the Project. 1-hour Total Suspended Particulates (TSP) should be conducted at a frequency of at least three times in every six days when the highest dust impact occurs.

Monitoring Location

2.2. According to the Updated EM&A Manual, the designated locations for impact air quality monitoring are listed in Table 2.1 and their locations are shown in Figure 2.1.

Table 2.1 Summary of Proposed Air Quality Monitoring Location

Station(s)	EIA ID	Monitoring Location
AM23	P1032	Planned Port Back-up, Storage and Workshop (at Site 3-6)
AM24	P1501	Planned Port Back-up, Storage and Workshop (at Site 3-8)
AM25a	-	San Wai Sewage Treatment Plant near the Planned Port Back-up, Storage and Workshop (at Site 3-14)

2.3. In accordance with the Table A2.4 in Appendix A of the Updated EM&A Manual, impact air quality monitoring will be carried out at monitoring stations AM23, AM24 and AM25a after the occupation of the planned port back-up, storage and workshop.

2.4. As confirmed with ER, the planned port back-up, storages and workshops at Site 3-6, Site 3-8 and Site 3-14 are not constructed yet. Thus, the impact air quality monitoring will be carried out at AM23, AM24 and AM25a after the construction and occupation of these planned port back-up, storages and workshops. No air quality monitoring was carried out in this reporting month.

3 Water Quality Monitoring Requirement

3.1. In accordance with the Updated EM&A Manual, impact water quality monitoring should be carried out three days per week at all designated monitoring stations during the construction period. The interval between two sets of monitoring should not be less than 36 hours.

3.2. Replicate in-situ measurements of dissolved oxygen (DO), temperature, turbidity, pH, and suspended solids (SS) for each independent sampling event shall be collected to ensure a robust statistically interpretable database.

Monitoring Location

3.3. Impact water quality monitoring was conducted at 6 monitoring stations which is summarized in Table 3.1. The location of water quality monitoring stations is shown in Figure 3.1.

Table 3.1 Summary of Impact Water Quality Monitoring Stations

Station	Description	Easting	Northing
U1	Upstream Station	815936	834150
U2	Upstream Station	816240	834009
SW	Gradient station (Downstream of U1 and the construction site of Road D1)	816304	834321
HT	Gradient station (Downstream of U2 and the construction site of Road D1)	816866	834314
TKW1	Gradient station (Downstream of the construction site of Road D1)	816563	834686
TKW	Gradient station (Downstream of TKW1 and construction site of Road D1)	816594	834690

Remark: The original water quality monitoring station DB was surrounded by scrubs and vegetation and located along the steep slope of the hill to south-west of Fung Kong Tsuen. The watercourse runs towards the north of Road D1, but no downstream watercourse was identified. Thus, water quality monitoring station DB is not recommended for this Contract without upstream/ downstream monitoring locations identified. An updated water quality monitoring stations TKW and TKW1 were proposed by ET and approved by IEC and EPD.

Monitoring Parameter and Frequency

3.4. The parameters that have been selected for measurement in-situ and in the laboratory are those that are either determined in the EIA to be those that are likely be affected by the construction works or a standard check on water quality conditions. Parameters to be measured in the impact water quality monitoring are listed in Table 3.2.

Table 3.2 Parameters measured in the Impact Water Quality Monitoring

Parameters	Units	Abbreviations	Frequency
In-situ measurements			3 days per week
Dissolved oxygen	mg/L	DO
Dissolved oxygen saturation	%	DO%
Temperature	℃	-
pH	-	-
Turbidity	NTU	-
Laboratory measurements
Suspended Solids	mg/L	SS

3.5. Monitoring location and position, time, sampling depth, weather conditions and any special phenomena or work underway nearby was also be recorded.

Sampling Depths & Replication

3.6. During impact water quality monitoring, each station was sampled, and measurements / water samples was taken at three depths, 1 m below the water surface, mid-depth and 1 m above riverbed. If the water depth was less than 6 m, mid-depth might be omitted. If the water depth was less than 3 m, mid-depth sampling only. For in situ measurements, duplicate readings were made at each water depth at each station. Duplicate water samples were collected at each water depth at each station.

Monitoring Equipment

3.7. A multi-parameter meter (Model HORIBA U-53) was used to measure DO, turbidity, salinity, pH and temperature.

Dissolved Oxygen and Temperature Measuring Equipment

3.8. The instrument for measuring dissolved oxygen and temperature should be portable and weatherproof complete with cable, sensor, and use DC power source. The equipment was capable of measuring:

· A dissolved oxygen level in the range of 0 20 mg/L and 0 - 200% saturation; and

· The temperature within 0 - 45 ℃.

3.9. The equipment had a membrane electrode with automatic temperature compensation complete with a cable.

3.10. Sufficient stocks of spare electrodes and cables were available for replacement where necessary.

Turbidity Measurement Equipment

3.11. Turbidity was measured in situ by using the nephelometric method. The instrument was portable and weatherproof using a DC power source complete with cable, sensor and comprehensive operation manuals. The equipment was capable of measuring turbidity between 0 - 1000 NTU. The probe cable was not less than 25 m in length.

Water Depth Detector

3.12. A portable, battery-operated and handheld echo sounder was used for the determination of water depth at each designated monitoring station.

3.13. The instrument was consisting of a potentiometer, a glass electrode, a reference electrode and a temperature-compensating device. It was readable to 0.1 pH value in a range of 0 to 14. Standard buffer solutions of at least pH 7 and pH 10 were used for calibration of the instrument before and after use.

Sample Container and Storage

3.14. Following collection, water samples for laboratory analysis were stored in high density polyethylene bottles with appropriate preservatives added, packed in the ice (cooled to 4 ℃ without being frozen). The sample were delivered to Acumen Laboratory and Testing Limited (ACUMEN) (HOKLAS Registration No. 241) and analysed as soon as possible after collection of the water samples. Sufficient volume of samples was collected to achieve the detection limit.

Calibration of In Situ Instruments

3.15. The pH meter, DO meter and turbidimeter were checked and calibrated before use. DO meter and turbidimeter were certified before use and subsequently recalibrated at quarterly basis throughout all stage of water quality monitoring programme. Response of sensors and electrodes were checked with certified standard solutions before each use. Wet bulb calibration for a DO meter was carried out before measurement.

3.16. For the on-site calibration of field equipment (Multi-parameter Water Quality System), the BS 1427:2009, Guide to on-site test methods for analysis of waters was observed.

Back-up Equipment

3.17. Sufficient stocks of spare parts were maintained for replacements when necessary. Backup monitoring equipment was also be made available so that monitoring can proceed uninterrupted even when some equipment is under maintenance, calibration, etc.

3.18. Table 3.3 summarizes the equipment used in the water quality monitoring programme. Copies of the calibration certificates of multi-parameter water quality monitoring system are shown in Appendix E.

Table 3.3 Water Quality Monitoring Equipment

Equipment	Brand and Model Number	Quantity
Multi-parameter Water Quality System	HORIBA U-53	1

Monitoring Methodology

3.19. A multi-parameter meter (Model HORIBA U-53) was used to measure DO, turbidity, salinity, pH and temperature.

Operating/ Analytical Procedures

3.20. At each measurement, two consecutive measurements of DO concentration, DO saturation, salinity, turbidity, pH and temperature were taken. The probes were retrieved out of water after the first measurement and then re-deployed for the second measurement. Where the difference in the value between the first and second readings of each set was more than 25% of the value of the first reading, the reading was discarded, and further readings were taken.

Laboratory Analytical Methods

3.21. Duplicate samples from each independent sampling event are required for all parameters. Analysis of suspended solids were carried out by ACUMEN and comprehensive quality assurance and control procedures in place in order to ensure the quality and consistency of the results. The reporting limit and detection limit are provided in Table 3.4 and the detection limit for the in-situ measurement are shown in Table 3.5.

Table 3.4 Method for Laboratory Analysis for Water Samples

Determinant	Proposed Method	Limit of Reporting
Total Suspended Solid (SS)	APHA 2540 D	1.0 mg/L

Table 3.5 Detection Limits and Precision for Water Quality Parameters

Parameters	Detection limit	Accuracy	Precision
DO	0 20 mg/L	± 0.1 mg/L	25%
Temperature	0 45 ℃	± 0.1 ℃
pH	0 14	± 0.1
Turbidity	0 1000 NTU	± 2 NTU

QA/QC Requirements

Decontamination Procedures

3.22. Water sampling equipment used during the course of the monitoring process was decontaminated by manual washing and rinsed with distilled water after each sampling event. All of the disposable components/ accessories were discarded after sampling.

Sampling Management and Supervision

3.23. All sampling bottles were labelled with the sample ID numbers (including the sampling station), and sampling date. Water samples were dispatched to the testing laboratory for analysis as soon as possible. All the collected samples were stored in a cool box to keep the temperature less than 4 ℃ but without frozen. All water samples were handled under chain of custody protocols and relinquished to the laboratory representatives at locations specified by the laboratory.

Quality Control Measures for Sample Testing

3.24. Quality control of laboratory analysis of water samples was performed by ACUMEN for every batch of 20 samples:

· One method blank; and

· One set of QC sample

Event and Action Plan

3.25. Should any non-compliance of the criteria occur, action in accordance with the Event and Action Plan in Appendix H shall be followed. Investigation of the exceedances of environmental quality performance limits should be conducted, and the ET will immediately notify the IEC and EPD, as appropriate. The notification should be followed up with advice to the IEC and EPD on the results of the investigation, proposed actions and success of the action taken, with any necessary follow-up proposals.

Results and Observations

3.26. All water quality monitoring was conducted as scheduled in the reporting month. The water quality monitoring schedule for this reporting month is shown in Appendix D.

3.27. The monitoring results and graphical presentation of water quality monitoring at the monitoring stations are shown in Appendix F.

3.28. During the reporting month, fourteen (14) action level exceedances and fourteen (14) limit level exceedances for DO were recorded, and one (1) action level exceedance and two (2) limit level exceedances for turbidity were recorded, and one (1) limit level exceedance of SS during impact water quality monitoring were recorded. Summaries of exceedance records are shown in Table 3.6 and Table 3.7. Action and Limit Levels for impact water quality monitoring are presented in Table 3.8.

Table 3.6 Summary of Exceedance Records of Water Quality Monitoring

Date	Station	Parameter (Unit)	Depth-averaged Measured Value	Exceedance		Exceedances due to the Project
Date	Station	Parameter (Unit)	Depth-averaged Measured Value	AL	LL	Exceedances due to the Project
6/12	TKW1	DO (mg/L)	2.2		ü	N
	HT	DO (mg/L)	2.2	ü		N
	TKW	Turbidity (NTU)	26.5		ü	N
	SW	SS (mg/L)	13.5		ü	N
8/12	SW	Turbidity (NTU)	22.3	ü		N
10/12	TKW1	DO (mg/L)	2.4		ü	N
	TKW		2.4	ü		N
	SW		2.3		ü	N
	HT		2.3	ü		N
13/12	TKW	DO (mg/L)	2.2		ü	N
	SW		2.0		ü	N
	HT		2.1		ü	N
15/12	TKW1	DO (mg/L)	2.3		ü	N
	SW		3.6	ü		N
	HT		2.4	ü		N
	TKW	Turbidity (NTU)	25.1		ü	N
17/12	TKW1	DO (mg/L)	2.5		ü	N
	TKW		2.3		ü	N
	SW		3.6	ü		N
	HT		2.3	ü		N
20/12	TKW1	DO (mg/L)	2.7		ü	N
	TKW		2.5	ü		N
	SW		3.3		ü	N
	HT		2.3	ü		N
22/12	TKW1	DO (mg/L)	2.7		ü	N
	TKW		2.4	ü		N
	SW		3.6	ü		N
	HT		2.4	ü		N
24/12	TKW1	DO (mg/L)	2.2		ü	N
	SW		3.6	ü		N
	HT		2.4	ü		N

Table 3.7 Summary of Exceedance Records of Water Quality Monitoring

Parameter	No. of non-project related exceedances		Total No. of non-project related exceedances	No. of exceedance related to the Project		Total No. of exceedance related to the Project
Parameter	AL	LL	Total No. of non-project related exceedances	AL	LL	Total No. of exceedance related to the Project
pH	0	0	0	0	0	0
Dissolved Oxygen	14	14	28	0	0	0
Turbidity	1	2	3	0	0	0
Suspended Solids	0	1	1	0	0	0

Table 3.8 Derived Action and Limit Levels for Water Quality

Parameters	Action Levels	Limit Levels
SW
DO (mg/L)	3.7	3.5
Turbidity (NTU)	21.4	22.9
SS (mg/L)	9.7	9.9
pH	Less than 6.6 or greater than 8.4	Less than 6.5 or greater than 8.5
HT
DO (mg/L)	2.4	2.2
Turbidity (NTU)	32.3	32.6
SS (mg/L)	34.0	38.7
pH	Less than 6.6 or greater than 8.4	Less than 6.5 or greater than 8.5
TKW1
DO (mg/L)	2.8	2.8
Turbidity (NTU)	27.9	29.2
SS (mg/L)	16.0	18.4
pH	Less than 6.6 or greater than 8.4	Less than 6.5 or greater than 8.5
TKW
DO (mg/L)	2.5	2.4
Turbidity (NTU)	24.2	24.6
SS (mg/L)	19.8	21.6
pH	Less than 6.6 or greater than 8.4	Less than 6.5 or greater than 8.5

Notes:

(1) For DO, non-compliance of the water quality limit occurs when monitoring result is lower than the limit.

(2) For Turbidity and SS, non-compliance of the water quality limit occurs when monitoring result is higher than the limit.

(3) The Action Levels and Limit Levels for dissolved oxygen only apply to mid-depth.

3.29. After confirmation of exceedance of the water quality monitoring results, ET has sent the emails for Notification of Exceedance (NOE) to inform relevant parties (i.e., EPD, ER, IEC and Contractor) about the exceedances. After investigation, all action and limit level exceedances recorded during the reporting period were considered non-project related. Detail of the investigation results are presented in Appendix M.

Recommendations

3.30. In view of the non-project related exceedances of action and limit levels recorded frequently in December 2022, review of the water quality baseline condition was proposed to reflect the baseline condition during dry season and to reduce the number of false alarms. After site investigation, there is no evidence to indicate that the water quality monitored between 6 and 31 December 2022 was affected by the stie activities, and the water quality monitoring exceedances were caused by other composite factors including surface runoff and effluent discharges from the workshops, open storages, warehouses, private toilet(s) and residential dwellings along the catchment downstream of the site, as well as natural variation of upstream water quality.

3.31. It is proposed to adopt the water quality data collected in December 2022 as the baseline water quality during the dry season and to derive a supplementary Action/ Limit Levels for the dry season. (The Action/ Limit Levels derived from the water quality data collected in May 2022 would then be applied for wet season.) An updated Baseline Water Quality Monitoring Report would be submitted to IEC and EPD for approval.

3.32.

4 Waste Management

4.1. Waste generated from the Project include inert construction and demolition (C&D) materials and non-inert C&D wastes in the reporting period. The amount of waste generated by the construction works of the Project during the reporting period are shown in Appendix I.

4.2. Construction and demolition (C&D) materials sorting was carried out on site. Sufficient numbers of receptacles were provided for general refuse collection and sorting. Excavated inert C&D materials were reused to minimize the disposal of C&D waste to public fill.

4.3. The Contractor is advised to minimize the wastes generated through recycling or reusing. All applicable mitigation measures stipulated in the Updated EM&A Manual and waste management plans will be fully implemented.

4.4.

5 Environmental Site Inspection and Audit

5.1. Site inspections were carried out by ET on a weekly basis to monitor the implementation of proper environmental pollution control mitigation measures for the Project. During the reporting period, site inspections were carried out on 9, 16, 23 and 28 December 2022. Joint IEC site inspection was carried out on 28 December 2022.

5.2. Bi-weekly landscape and visual site audits were carried out by a Registered Landscape Architect (RLA) on 16 and 28 December 2022. No particular observation was recorded in this reporting period.

5.3. During site inspection in the reporting period, no non-conformance was identified. Key observations and reminders during the site inspection and landscape and visual site audit are described in Table 5.1.

Table 5.1 Summary of Site Inspections and Recommendations

Inspection Date	Key Observation / Reminders	Follow-up Action
9 Dec 2022	1. Fugitive dust was observed when a truck was moving on the haul road within the site. The Contractor had implemented water spraying on site and was reminded to enhance the measure over the haul road. 2. The Contractor was reminded to place a copy of relevant environmental permit at the site entrance.	1. Water spraying was provided on site to prevent dust generation. 2. Copies of environmental permit to be provided at the site entrance.
16 Dec 2022	1. It is understood that the application of effluent discharge licenses is still underway. No effluent discharge away from the site was observed during the inspection. The Contractor was reminded that no effluent is allowed to be discharged off-site before the issue of license.	1. No effluent will be discharged before the effluent discharge license is acquired.
23 Dec 2022	1. Drip tray should be provided for chemical storage and chemical containers shall be properly labelled. 2. Contractor was reminded to display Environmental Permit on site exit. 3. The Contractor was reminded to replace the faded NRMM Label. 4. The Contractor was reminded that no effluent is allowed to be discharged off-stie before the issue of license.	1. Drip tray was provided for chemical storage. 2. Copies of environmental permit to be provided at the site entrance. 3. NRMM Label was replaced. 4. No effluent will be discharged before acquired the effluent discharge license.
28 Dec 2022	1. At the construction site of Road D1, stagnant water within the drip tray of a generator should be properly removed.	1. Stagnant water in drip tray was removed.

Implementation Status of Environmental Mitigation Measures

5.4. According to the EIA Report, EP and the Updated EM&A Manual, the mitigation measures detailed in the documents are recommended to be implemented during the construction phase. A summary of the Project Implementation Schedule is provided in Appendix C.

6 Environmental Non-Conformance Summary of Exceedances

6.1. Fourteen (14) action level exceedances and fourteen (14) limit level exceedances for DO were recorded. One (1) action level exceedance and two (2) limit level exceedances for turbidity were recorded, and one (1) limit level exceedance for SS was recorded. After investigation, all exceedances were considered non-project related.

6.2. Should the monitoring results of the environmental monitoring parameters at any designated monitoring stations indicate that the Action / Limit Levels are exceeded, the actions in accordance with the Event and Action Plans in Appendix H would be carried out.

6.3. Bi-weekly landscape and visual site audits were carried out by a Registered Landscape Architect (RLA) on 16 and 28 December 2022. No particular observation was recorded in this reporting period.

6.4. Should the audit results indicate that the nonconformity occasion, the actions in accordance with the Event and Action Plans in Appendix H would be carried out.

Summary of Environmental Non-Compliance

6.5. No environmental non-compliance was recorded in the reporting period.

Summary of Environmental Complaint

6.6. No environmental complaint was received in the reporting period. The Cumulative Complaint Log is presented in Appendix J.

Summary of Environmental Summon and Successful Prosecution

6.7. There was no successful environmental prosecution or notification of summons received since the Project commencement. The Cumulative Log for environmental summon and successful prosecution is presented in Appendix J.

7 Future Key Issues

7.1. Works to be undertaken in the next reporting period are summarized in below:

· Construction of Box Culvert

· Diversion of watermains

7.2. Potential environmental impacts arising from the above construction activities are mainly associated with construction dust impact, noise impact, water quality impact and waste management.

Recommendation

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

Dust

· Regular watering to reduce dust emissions from exposed site surface;

· Stockpile of dusty materials shall be covered entirely by impervious sheeting;

· Provide vehicles washing facilities at all site exits to wash away any dusty materials from vehicle body;

· NRMM Labels should be displayed on the applicable equipment on site by the Contractor;

· Provision of water sprinklers along the haul road for dust suppression.

Noise

· Only well-maintained plant should be operated on-site, and plant should be maintained regularly during the construction programme;

· Quality Powered Mechanical Equipment (QPME) should be adopted as far as possible.

Water Quality

· No effluent discharge would be allowed before acquired the effluent discharge license.

Waste Management

· Provision of sufficient waste disposal points and regular collection of waste;

· Regular cleaning and maintenance programme for drainage system; and

· Chemical containers shall be stored with drip tray underneath.

Landscape and Visual

· Construction activities shall be carefully designed to minimize impact in existing retained trees.

7.4. The construction programme for the Project for next reporting period is presented in Appendix A.

8 Conclusions and Recommendations Conclusion

8.1. This Monthly EM&A Report presents the EM&A works during the reporting period from 6 to 31 December 2022 in accordance with the Updated EM&A Manual.

8.2. Fourteen (14) action level exceedances and fourteen (14) limit level exceedances for dissolved oxygen were recorded. One (1) action level exceedance and two (2) limit level exceedances for turbidity of impact water quality monitoring were recorded, and one (1) limit level exceedance for SS was recorded. After investigation, all exceedances were considered non-project related.

8.3. Environmental site inspections were conducted on 9, 16, 23 and 28 December 2022 by the ET in the reporting period.

8.4. No environmental complaint was received in the reporting period.

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

8.6. The ET will keep track on the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures.

8.7. No change of EM&A programme was made in this reporting period.

Comments/ Recommendations

8.8. The baseline water quality monitoring was conducted during a typical wet season in Hong Kong. During the dry season, however, the rainfall is less, and the stream flow would contain higher portion of expedient discharge from local village houses and contaminated runoff from brownfield sites/ open storage area. It is anticipated that the stream flow would contain higher content of turbidity and SS during the dry season. Thus, review of the water quality baseline condition would be required during the construction phase of the Project, particularly when the non-project related exceedances of Action and Limit Levels become frequent. The environmental performance criteria may need to be updated if it is evident that the baseline conditions have changed significantly.

8.9. As frequent non-project related exceedances of the water quality parameters were reported during the monitoring in December 2022, a supplementary set of Action/ Limit Levels of the water quality parameters would be proposed for the dry season due to change of the baseline water quality during the dry season.

Rev.	Description of Modification	Date
0.	First issue for comments	11/01/2023
1.	Revised according to IECs comments	14/01/2023
2.	Revised according to IECs comments	18/01/2023

Appendix A	Construction Programme
Appendix B	Project Organization Chart
Appendix C	Project Implementation Schedule (PIS)
Appendix D	Environmental Monitoring Schedule
Appendix E	Calibration Certification
Appendix F	Water Quality Monitoring Results and Graphical Presentation
Appendix G	Quality Control Report for Suspended Solids
Appendix H	Event and Action Plan
Appendix I	Waste Generation in the Reporting Month
Appendix J	Summary of Complaint, Notification of summons and Prosecution
Appendix K	Summary of Submission Status under Environmental Permit
Appendix L	Laboratory Report for Suspended Solids
Appendix M	Incident Report (s) for Water Quality Monitoring Exceedance

Table I	Summary of EM&A activities in the Reporting Period
Table II	Summary of Exceedance in the Reporting Period
Table 1.1	Status of Environmental License, Notifications and Permits
Table 2.1	Summary of Proposed Air Quality Monitoring Location
Table 3.1	Summary of Impact Water Quality Monitoring Stations
Table 3.2	Parameters measured in the Impact Water Quality Monitoring
Table 3.3	Water Quality Monitoring Equipment
Table 3.4	Method for Laboratory Analysis for Water Samples
Table 3.5	Detection Limits and Precision for Water Quality Determinates
Table 3.6	Summary of Exceedance Records of Water Quality Monitoring
Table 3.7	Summary of Exceedance Records of Water Quality Monitoring
Table 3.8	Derived Action and Limit Levels for Water Quality
Table 5.1	Summary of Site Inspections and Recommendations

Figure 2.1	Air Quality Monitoring Locations
Figure 3.1	Locations of Impact Water Quality Monitoring Stations