EXECUTIVE SUMMARY

Introduction

1. This is the 63^rd monthly Environmental Monitoring and Audit (EM&A) Report prepared by Cinotech Consultants Limited for the project ¡§Contract No. HY/2011/09 ¡V Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road ¡V Section between HKSAR Boundary and Scenic Hill¡¨ (hereinafter called the ¡§Contract¡¨). This report documents the findings of EM&A Works conducted in April 2018.

Environmental Monitoring and Audit Progress

2. A summary of the monitoring activities in this reporting month is listed in Table I below:

Table I Summary Table for Monitoring Activities in the Reporting Month

Parameter(s)	Date(s)
1-hr TSP Monitoring	6^th, 12^th, 18^th, 24^thand 30^th April 2018
24-hr TSP Monitoring	6^th, 12^th, 18^th, 24^thand 30^th April 2018
Noise Monitoring	4^th, 13^th, 19^th and 25^th April 2018
Water Quality Monitoring	2^nd, 4^th, 6^th, 10^th, 12^th, 14^th, 16^th, 18^th, 20^th, 23^rd, 26^th, 28^thand 30^thApril 2018
Dolphin Monitoring (Line-transect Vessel Surveys)	6^th and 13^th April 2018
Environmental Site Inspection	3^rd, 10^th, 17^th and 24^th March 2018

Breaches of Action and Limit Levels

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

Table II Summary Table for Events Recorded in the Reporting Month

Environmental Monitoring	Parameter	No. of Exceedance		Total No. of Exceedance	No. of Exceedance related to the Construction Activities of this Contract		Total No. of Exceedance related to the Construction Activities of this Contract
		Action Level	Limit Level		Action Level	Limit Level
Air Quality	1-hr TSP	0	0	0	0	0	0
	24-hr TSP	1	0	1	0	0	0
Noise	Leq(30min)	0	0	0	0	0	0
Water Quality	Dissolved Oxygen (DO) (Surface & Middle)	0	0	0	0	0	0
	Dissolved Oxygen (DO) (Bottom)	0	0	0	0	0	0
	Turbidity	0	0	0	0	0	0
	Suspended Solids (SS)	4	0	4	0	0	0

1-hour TSP Monitoring

4. All 1-hour TSP monitoring was conducted as scheduled in the reporting month. No Action/Limit Level exceedances were recorded.

24-hour TSP Monitoring

5. All 24-hour TSP monitoring was conducted as scheduled in the reporting month. There is one Action Level exceedance was recorded.

6. According to the investigation, the exceedances are considered not due to the Contract due to the following reasons:

1) No dust generation construction works was conducted at near the monitoring station during monitoring; and

2) No observable dust source from construction activity was observed.

Construction Noise

All construction noise monitoring was conducted as scheduled in the reporting month. No Action/Limit Level exceedance was recorded.

Water Quality

7. All water quality monitoring was conducted as scheduled in the reporting month. There are four Action Level and no Limit Level exceedances were recorded for suspended solids. No Action/Limit Level exceedance for dissolved oxygen and turbidity were recorded.

8. According to the investigation, the exceedances are considered not due to the Contract due to the following reasons:

1) No major marine construction activity was conducted;

2) No pollution discharge from construction activity was observed;

3) Sediment plume due to natural fluctuation of shallow water was observed; and

4) Dispersion of sediment plume to the monitoring stations from the area outside the site boundary (i.e. works area not under and related to HY/2011/09) was observed.

Complaint Log

9. No environmental complaint was received in the reporting month.

Notification of Summons and Successful Prosecutions

10. No notification of summons and successful prosecution was received in the reporting month.

Reporting Changes

11. This report has been developed in compliance with the reporting requirements for the subsequent monthly EM&A Report as required by the EM&A Manual for Hong Kong Link Road (EM&A Manual).

Future Key Issues

12. Major site activities for the coming reporting month will include:

Western Water

¡P Installation of cat ladders at pile cap walls;

¡P Dismantling NSS access platforms; and

¡P Installation of permanent maintenance platforms.

P68

¡P Construction of permanent rockfill platform

Portion A

¡P Construction of the sloping seawall; and

¡P Reinstatement of South Perimeter Road (P81 ¡V P83)