EXECUTIVE SUMMARY

Introduction

1.              This is the 29th 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 June 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

3rd, 9th, 15th, 19th, 25th and 30th June 2015

24-hr TSP Monitoring

3rd, 9th, 15th, 19th, 25th and 30th June 2015

Noise Monitoring

4th, 10th, 16th and 26th June 2015

Water Quality Monitoring

1st, 3rd, 5th, 8th, 10th, 12th, 15th, 17th, 19th, 22nd, 24th, 26th and 29th June 2015

Dolphin Monitoring (Line-transect Vessel Surveys)

9th and 18th June 2015

Additional Land-based Dolphin Behaviour and Movement Monitoring

3rd  and 11th June 2015

Environmental Site Inspection

4th, 9th, 16th, 23rd and 30th June 2015

Archaeological Site Inspection

23rd June 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

Action Level

Limit Level

Action Level

Limit Level

Air Quality

1-hr TSP

0

0

0

0

24-hr TSP

0

0

0

0

Noise

Leq(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)

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. No Action/Limit Level exceedance was recorded.

Complaint Log

 

8.              One 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:

WA4

Ÿ   Fabrication of lifting frames

Ÿ   Deliveries of frame structures

 

WA7

Ÿ   Fabrication of cofferdam frame structures

Ÿ   Maintenance of Reverse Circulation Drill (RCD)  equipment

 

Marine Viaduct (P0 to P80)

Ÿ   Inter-face coring tests

Ÿ   Full depth coring test

Ÿ   Sonic test

Ÿ   Grouting work

Ÿ   Casing installation

Ÿ   Installation of sheetpiles on cofferdam

Ÿ   RCD excavation

 

Pile Cap Construction:

Ÿ   Installation of precast cap shells

Ÿ   Concreting

Ÿ   Kingpost installation and associated steel welding works

Ÿ   Concreting trimming

Ÿ   Rock excavation

Ÿ   Steel Fixing works of pile cap

 

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

 

Precast Column Erection

Ÿ   Installation of base units and precast units

Ÿ   Stressing of vertical nailing tendons

 

Deck Erection

Ÿ   Setting up of equipment

Ÿ   Fabrication of Lifting Frames (LF)

Ÿ   Segment erection

 

Precast Segment

Ÿ   Segment casting

 

Land Viaduct (P81 to Abutment at Scenic Hill Tunnel (SHT))

Ÿ   Excavation works

Ÿ   ELS excavation

Ÿ   Pier head construction

Ÿ   Installation of steel bracket and girder system

Ÿ   Removal of formwork & falsework

Ÿ   Erection of soffit formwork was completed, formwork & falsework erection

Ÿ   Steel fixing

Ÿ   Nailing work and removal of formwork