EXECUTIVE SUMMARY

Introduction

1. This is the 26^th monthly Environmental Monitoring and Audit (EM&A) Report prepared by Cinotech Consultants Limited for the project “Contract No. HY/2011/09 – Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between HKSAR Boundary and Scenic Hill” (hereinafter called the “Contract”). This report documents the findings of EM&A Works conducted in March 2015.

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, 23^rd and 27^th March 2015
24-hr TSP Monitoring	5^th, 11^th, 17^th, 23^rd and 27^th March 2015
Noise Monitoring	6^th, 12^th, 18^th and 24^th March 2015
Water Quality Monitoring	2^nd, 4^th, 6^th, 9^th, 11^th, 13^th, 17^th, 19^th, 21^st, 23^rd, 25^th, 27^th and 31^st March 2015
Dolphin Monitoring (Line-transect Vessel Surveys)	19^th and 27^th March 2015
Additional Land-based Dolphin Behaviour and Movement Monitoring	9^th and 13^th March 2015
Environmental Site Inspection	3^rd, 10^th, 17^th, 23^rd and 31^st March 2015
Archaeological Site Inspection	17^th March 2015

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		No. of Exceedance related to the Construction Activities of this Contract
Environmental Monitoring	Parameter	Action Level	Limit Level	Action Level	Limit Level
Air Quality	1-hr TSP	0	0	0	0
Air Quality	24-hr TSP	0	0	0	0
Noise	L_eq_(30min)	0	0	0	0
Water Quality	Dissolved Oxygen (DO) (Surface & Middle)	0	0	0	0
	Dissolved Oxygen (DO) (Bottom)	0	0	0	0
	Turbidity	0	0	0	0
	Suspended Solids (SS)	6	5	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 six Action Level and five Limit Level exceedances for suspended solids were recorded. 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) Installation work at Pile Cap was carried at near the monitoring stations in which exceedances were recorded. Water quality impact due to this work is not anticipated;

2) No pollution discharge was observed from the site;

3) Sediment plume due to natural fluctuation of shallow water was observed but no vessels were observed near the plumes;

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; and

5) No site activity was carried at near the monitoring stations in which exceedances were recorded.

Complaint Log

9. No environmental complaints were 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

Ÿ Fabrication of rebar cages

Ÿ Fabrication of temporary piling platforms

WA7

Ÿ Fabrication of rebar cages

Ÿ Loading and Unloading of rebar materials

Marine Viaduct (P0 to P80)

Reverse Circulation Drill (RCD) Method:

Ÿ Piling works

Ÿ Mooring bits and silt curtain installation

Ÿ Installation of piling jackets

Ÿ Dismantling of piling jackets

Ÿ Pile excavation and casing installation

Ÿ Inter-face tests, full depth coring test and sonic test

Ÿ Grouting works

Kelly Method:

Ÿ Removal of piling platform and temporary pile extraction

Ÿ Inter-face tests, full depth coring

Ÿ test and sonic test

Ÿ Toe grouting works

Pile Cap Construction:

Ÿ Installation of precast cap shells

Ÿ Concreting

Ÿ Kingpost installation and associated steel welding works

Ÿ Concreting trimming

Works with Cofferdam:

Ÿ Installation of waling strut

Ÿ Installation of sheet pile

Ÿ Installation of temporary working platform

Ÿ Installation of shear pin

Ÿ Installation of bored pile casing

Ÿ Excavation works and casting of concrete plug

Ÿ Dewatering works and sealing works

Ÿ Additional welding

Column Construction:

Ÿ Lifting works

Ÿ Lift concreting

Ÿ Pier head works

Ÿ Pier head concreting

Ÿ Column insert installation, mobilization and temporary works

Deck Erection:

Ÿ Segment Unloading Frame (SUF)

Ÿ Winches test

Ÿ Assembly and erection of Lifting Frame 2

Ÿ Erection of segment on pier

Land Viaduct (P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)

Ÿ Pile construction

Ÿ Pouring of column

Ÿ Pre-bored for sheet pile for cofferdam construction

Ÿ Seawall block coring and breaking

Ÿ Formwork erection

Ÿ Blinding concrete for scaffolding works

Ÿ Dismantling of steel bracket system

Ÿ Erection of steel bracket system cross road steel portal beams erection and corresponding falsework erection

Ÿ Steel girders and cross beams erection