EXECUTIVE SUMMARY

Introduction

1.              This is the 65th 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 June 2018.

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

6th, 12th, 15th, 21st and 27th June 2018

24-hr TSP Monitoring

6th, 12th, 15th, 21st and 27th June 2018

Noise Monitoring

1st, 7th, 13th, 22nd and 28th June 2018

Water Quality Monitoring

1st, 4th, 6th, 9th, 11th, 13th, 15th, 18th, 20th, 22nd, 25th, 27th and 29th June 2018

Dolphin Monitoring (Line-transect Vessel Surveys)

4th and 20th June 2018

Environmental Site Inspection

5th, 12th, 19th and 26th June 2018

Archaeological Site Inspection

19th June 2018


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)

3

0

3

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 exceedances were recorded.

 

24-hour TSP Monitoring

 

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

 

Construction Noise

 

All construction noise monitoring was conducted as scheduled in the reporting month. No Action/Limit Level exceedance was recorded.


Water Quality

 

6.              All water quality monitoring was conducted as scheduled in the reporting month. There are three Action Level exceedances were recorded for suspended solids. No Action/Limit Level exceedance for dissolved oxygen and turbidity were recorded

 

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

1)      No major marine construction activity was conducted;

2)      No pollution discharge from construction activity was observed; 

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

4)      Localized sediment plume due to the rough water condition was observed.

Complaint Log

 

8.              No 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:

Marine Portion

¡P             Installation of cat ladders at pile cap walls; and

¡P             Dismantling NSS access platforms

Land Portion

¡P             Reinstatement of South Perimeter Road