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TABLE OF CONTENTS

 

EXECUTIVE SUMMARY                                                                                                                               

1.           INTRODUCTION  2

2.           BASIC PROJECT INFORMATION  2

3.           EM&A REQUIREMENTS – ROUTINE IMPACT MONITORING   2

4.           EM&A REQUIREMENTS – 24-HR WATER QUALITY MONITORING   2

5.           ENVIRONMENTAL SITE INSPECTION AND AUDIT  2

6.           NON-COMPLIANCE, COMPLAINTS, NOTIFICATION OF SUMMONS AND PROSECUTION  2

7.           CONCLUSIONS  2


TABLES:

Table I         Summary of Water Quality Exceedances – Routine Impact Monitoring (In-situ)                               

Table II        Summary of Water Quality Exceedances – Routine Impact Monitoring (Laboratory Analysis)                   

Table III       Summary of the Exceedances Recorded in Reporting Period – 24-hr Monitoring                         

Table 2‑1     Key Personnel Contact of the Contract

Table 2‑2     Detail Dredging Quantity 

Table 3‑1     Monitoring Parameters and Frequency 

Table 3‑2     Water Quality Monitoring Parameters 

Table 3‑3     Summary of Water Quality Exceedance (In-situ Measurement)

Table 3‑4     Summary of Water Quality Exceedance (Laboratory Analysis)

Table 4‑1     24-hr Water Quality Monitoring Parameters 

Table 4‑2     Summary of Water Quality Exceedance (24-hr Monitoring)

Table 5‑1     Waste Quantities of Dredging Works 

Table 5‑2     Comparison of Quarterly Mean to Baseline Mean 

Table 5‑3     Summary of Statistical Analysis 

Table 61     Environmental Complaints Log                                                                                                    

Table 6‑2     Cumulative Statistics on Complaints                                                                                            

Table 6‑3     Cumulative Statistics on Successful Prosecutions                                                                        

FIGURES:

Figure 1           Project General Layout

Figure 2           Dredging Work Location during the Reporting Period

Figure 3           Locations of Water Quality Monitoring Stations

 

APPENDICES:

Appendix A

Project Organization Chart

Appendix B

Construction Programme

Appendix C

Action and Limit Levels

Appendix D

Graphical Presentation – Routine Impact Monitoring Results

Appendix E

Graphical Presentation – 24-hr Monitoring Results

Appendix F

Environmental Mitigation Implementation Schedule

Appendix G

Waste Generation in Reporting Period

Appendix H

Quarterly Assessment of Construction Impacts

           


EXECUTIVE SUMMARY

 

i.      This is the Tenth Quarterly Environmental Monitoring Audit (EM&A) Report – August 2016 – October 2016 for Contract No. CV/2013/04 – Dredging Works in Kwai Tsing and its Approach Channel (CE63/2008 – Providing Sufficient Water Depth for Kwai Tsing Container Basin and its Approach Channel). The dredging works commenced on 23 April 2014. This report presents the environmental monitoring and audit works conducted from 23 July 2016 to 22 October 2016.

 

ii.    Construction Activities for the Reporting Period

During this reporting period, the principal work activities included:

 

August 2016

September 2016

October 2016

Site Trial on Dredging works without Silt Curtain Deployment on Portion A (Zone 2C2 and Zone  4A) and Portion E (Zone 13B).

 

 

The construction work under this Contract has been temporarily suspended since 13 August 2016.  Works will tentatively be resumed in late 2016.  During this period, there is no dredging work under this project.

The construction work under this Contract has been temporarily suspended since 13 August 2016.  Works will tentatively be resumed in late 2016.  During this period, there is no dredging work under this project.

Note: Hotspot area was completed excepted hard materials and buffer zone was almost completed except known highspot and hard materials

 

iii.   Water Quality Monitoring

Routine impact water quality monitoring at 22 designated monitoring stations namely C1, C2, C3, G1, G2, G3, G4, G5, G6, SR1, SR2, SR3, SR4, SR5, SR6, SR7, SR8, SR9, SR10, SR11, SR12 and SR13 were conducted during the reporting period. Exceedances of DO (S&M), DO (B), TIN (in-situ & lab) and Suspended Solids were recorded at various monitoring stations, detail of exceedance are summarized in Table I and II. However, investigation indicated these exceedances were not related to the Project works.

 

 

 

Among the 22 monitoring stations, supplementary 24-hr water quality monitoring was also conducted at 7 of the stations, which are SR4, SR5, SR9, SR10, SR11, SR12 and SR13. No exceedance was recorded in the reporting month. Number of exceedances recorded in the reporting month at each impact station is summarized in Table III.


 

 

iv.   Waste Management

There was marine sediment, Type 1 (Open Sea Disposal) disposed to East Sha Chau CMP Va or South of Brothers CMP 2, Type 1 Open Sea Disposal (Dedicated Site) and Type 2 sediment (Confined Marine Disposal) disposed to East Sha Chau Contaminated Mud Pits CMP Vd. All the Type 3 (Cat. Hf) sediment dredging and disposal was completed on 18 May 2016. No inert or non-inert C&D material related to dredging works and a small amount of general refuse were disposed off site in the reporting period.

 

iii.   Non-Compliance, Complaints, Notifications of Summons and Successful Prosecutions

No complaint, notification of prosecutions or summons was received in the reporting period.

 

iv.   Site Inspections and Audit

The Environmental Team conducted 13 site inspections in the reporting period. No particular observation was recorded in the reporting month.

 

According to Contractor, no archaeological deposit was found during reporting period.

 

v.    Compliance with Specific EP conditions

Implementation of contractor’s mitigation for dredging work and the associated dredging records were checked. It was concluded that the dredging is conducted orderly in compliance with the EP requirements on site mitigation measures in general.

 

vi.   Construction Activities for the Coming Reporting Period

According to Contractor, the construction work under this Contract has been temporarily suspended since 13 August 2016.  Works will tentatively be resumed in late 2016.  During present reporting period, there was no dredging work under this project. Routine impact water quality monitoring was suspended according to Clause 2.1.6 of the EM&A Manual and the Proposal for Temporary Suspension of Water Quality Monitoring (0394_13_ED_0326F) which no objection was received from EPD. The temporary suspension of routine impact water quality monitoring was effective from 1 September 2016.

 

Future Key Issues include:

  • Regular inspection on silt curtain deployment
  • Implementation of EM&A Programme