EXECUTIVE SUMMARY

Introduction

1.              This is the 22nd 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 November 2014.

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, 7th, 13th, 19th and 25th November 2014.

24-hr TSP Monitoring

3rd, 7th, 13th, 19th and 25th November 2014.

Noise Monitoring

4th , 10th , 20th and 26th November 2014

Water Quality Monitoring

3rd, 5th, 7th, 10th, 12th, 15th, 17th, 19th , 21st, 24th, 26th and 28th November 2014

Dolphin Monitoring (Line-transect Vessel Surveys)

5th  and 17th November 2014

Additional Land-based Dolphin Behaviour and Movement Monitoring

10th  and 24th November 2014

Environmental Site Inspection

4th, 11th, 18th and 28th November 2014

Archaeological Site Inspection

(1)  N/A

             Remark:       (1)   No archaeological site inspection was conducted in the reporting month.


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)

2

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 two Action Level and no 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 as localized red tides have been sighted during water quality monitoring on 28 November 2014 in which exceedances were recorded.

Complaint Log

 

9.              Three 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   Installation of temporary piles, platforms permanent casing

Ÿ   Removal of piling platform and temporary pile extraction

Ÿ   Pile excavation

Ÿ   Inter-face tests, full depth coring 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   Lifting frame fabrication in Dongguan

Ÿ   Segment Unloading Frame (SUF) in Portion C

Ÿ   Assembly of Launching Gantry 2 at River Trade Terminal

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

Ÿ   Cross road steel portal beams erection and corresponding falsework erection

Ÿ   Steel girders and cross beams erection