EXECUTIVE SUMMARY

Introduction

1. This is the 57^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 October 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	2^nd, 7^th, 13^th, 19^th, 25^th and 31^st October 2017
24-hr TSP Monitoring	2^nd, 7^th, 13^th, 19^th, 25^th and 31^st October 2017
Noise Monitoring	4^th, 10^th, 20^th, 25^th and 31^st October 2017
Water Quality Monitoring	2^nd, 4^th, 6^th, 9^th, 11^th, 14^th, 16^th, 18^th, 20^th, 23^rd, 25^th, 27^th and 30^th October 2017
Dolphin Monitoring (Line-transect Vessel Surveys)	10^th and 24^th October 2017
Environmental Site Inspection	3^rd, 10^th, 17^th, 24^thand 31^stOctober 2017
Archaeological Site Inspection	12^th September 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)	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)	10	2	12	0	0	0

1-hour TSP Monitoring

4. All 1-hour TSP monitoring was conducted as scheduled in the reporting. 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 ten Action Level and two 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 pollution discharge from construction activity was observed;

2) The exceeded results were similar or within the ranges baseline monitoring results;

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

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

5) Localized sediment plume due to the rough water condition was observed;

6) Adverse water quality outside the site boundary was observed while no pollution source from this Contract was observed and no construction vessel for this Contract was travelling nearby. 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 also 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 Breaking off the concrete footings for reinstatement of slope underneath the deck

¡P Reinstatement of sloping seawall

¡P Installation of precast parapet facial panel

¡P Construction of median and side barriers

¡P Construction of longitudinal stitching

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

¡P Installation of fire main

¡P Erection of sign gantry

¡P Installation of stormwater drainage

¡P Site clearance / formation work to reinstatement of South Perimeter Road

¡P Fill slope and roadworks for Chek Lap Kok South Road realignment

¡P Installation of carrier drains

¡P Installation of watermain

¡P Laying of asphalt pavement

E&M Works

¡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 Optic fibre cable laying works

¡P LV and HV cable laying works

¡P Cable tray installation

Marine Viaduct (P0 to P80)

Deck Erection

¡P Dismantling works

¡P Stitching works

¡P Movement joints installation

External Prestressing Tendon Installation

Internal Prestressing Grouting

Turnaround Facilities

¡P Casting at top slab for longitudinal stich

¡P Petrol interceptor rebar fixing

¡P Erection of falsework and formwork

¡P Wingslab falsework erection

¡P Sling platform erection

¡P Grouting bearing plinth

¡P Load transfer on bearing

¡P Concrete stitching

¡P Erect 4 number of Corner Beams