EXECUTIVE SUMMARY

Introduction

1. This is the 54^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 July 2017.

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	5^th, 11^th, 17^th, 21^st and 27^th July 2017
24-hr TSP Monitoring	5^th, 11^th, 17^th, 21^st and 27^th July 2017
Noise Monitoring	6^th, 12^th, 19^th, 24^thand 31^st July 2017
Water Quality Monitoring	3^rd, 5^th, 7^th, 10^th, 12^th, 14^th, 17^th, 19^th, 21^st, 24^th, 26^th, 28^th and 31^st July 2017
Dolphin Monitoring (Line-transect Vessel Surveys)	4^th and 13^th July 2017
Environmental Site Inspection	4^th, 11^th, 18^thand 25^th July 2017

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)	13	9	0	0	0	0
	Dissolved Oxygen (DO) (Bottom)	10	20	0	0	0	0
	Turbidity	0	0	0	0	0	0
	Suspended Solids (SS)	0	1	0	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 exceedance was recorded.

24-hour TSP Monitoring

5. All 24-hour TSP monitoring was conducted as scheduled in the reporting month. No Action/Limit Level exceedance was recorded.

Construction Noise

6. 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 twenty three Action Level and twenty nine Limit Level exceedances were recorded for dissolved oxygen. One Limit Level exceedance was recorded for suspended solids and no Action/Limit Level exceedance for turbidity was recorded.

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

1) No pollution discharge from construction activity was observed;

2) Control Station value already exceeded either the Baseline Action or Limit Levels.

3) Monitoring station is situated at the upstream of the construction sites;

4) Rough sea condition was recorded during the water quality monitoring. The low dissolved oxygen results are considered due to the stirring up of bottom sediments which cause the decomposition of organic matter by bacteria.

5) Sediment plume due to natural fluctuation of shallow water 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:

WA4

¡P Establishment for Asphalt Plant

Ancillary and Associated Facilities

¡P Sealing of deck openings and preparation deck surface for waterproofing

¡P Waterproofing and asphalt laying

¡P Watermain installation

¡P Installation of carrier drains

¡P Installation of precast parapet skins

¡P Construction of median and side barriers

¡P Construction of longitudinal stitching

¡P Erection of sign gantry

¡P Reinstatement of slope area and drainage works

¡P Reinstatement of sloping seawall

¡P CLK South Road realignment

¡P Laying of asphalt pavement

¡P Sealing of gantry crane loading opening

E&M Works

¡P E&M installation

¡P E&M ducting installation

¡P E&M works inside SHT building

¡P Street light cables and poles installation

¡P Cable hanger installation

¡P Construction of Load Centre

¡P Pillar box installation

¡P Installation for TCSS¡¦s CCTV high mast

¡P Installation for HKPF¡¦s high mast

¡P Installation for C&ED¡¦s high mast

Marine Viaduct (P0 to P80)

Deck Erection

¡P Segment erection

¡P Dismantling the remaining LF3

External Prestressing Tendon Installation

Internal Prestressing Grouting

Turnaround Facilities

¡P Steel fixing for longitudinal stitch between box girders

¡P Strands installation and stressing for extended platforms

¡P strands installation for stressing

¡P Casting of stitches between I-beams and box girder

¡P Strands installation for I-beams

¡P Assembly of Megashor tower for corner beams

¡P Erect 4 number of Corner Beams