EXECUTIVE SUMMARY

Introduction

1. This is the 64^th 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 May 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	4^th, 10^th, 16^th, 21^st, 25^th and 31^st May 2018
24-hr TSP Monitoring	4^th, 10^th, 16^th, 21^st, 25^th and 31^st May 2018
Noise Monitoring	2^nd, 7^th, 17^th and 23^rd May 2018
Water Quality Monitoring	2^nd, 4^th, 8^th, 10^th, 12^th, 14^th, 16^th, 18^th, 22^nd, 24^th, 26^th, 28^thand 30^thMay 2018
Dolphin Monitoring (Line-transect Vessel Surveys)	2^nd and 14^th May 2018
Environmental Site Inspection	2^nd, 8^th, 15^th ,23^rd and 29^th May 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	0	0	0	0	0	0
Noise	Leq(30min)	0	0	0	0	0	0
Water Quality	Dissolved Oxygen (DO) (Surface & Middle)	4	0	4	0	0	0
	Dissolved Oxygen (DO) (Bottom)	24	3	27	0	0	0
	Turbidity	0	0	0	0	0	0
	Suspended Solids (SS)	1	2	3	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. No Action/Limit Level exceedances were recorded.

Construction Noise

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

Water Quality

6. All water quality monitoring was conducted as scheduled in the reporting month. There are twenty eight Action Level and three Limit Level exceedances were recorded for dissolved oxygen. There are one Action Level and two Limit Level exceedances were recorded for suspended solids. No Action/Limit Level exceedance for and turbidity was recorded

7. 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) Control Station value already exceeded/very close to the Baseline Action Levels;

4) Monitoring Station is situated at the upstream of the construction sites;

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

6) 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

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

Notification of Summons and Successful Prosecutions

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

Reporting Changes

10. 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

11. 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 Reinstatement of South Perimeter Road (P81 ¡V P83)