TABLE OF CONTENTS

 

1.            INTRODUCTION  5

2.            BASIC PROJECT INFORMATION  7

3.            ROUTINE IMPACT WATER QUALITY MONITORING   11

4.            24-HR WATER QUALITY MONITORING   19

5.            ENVIRONMENTAL SITE INSPECTION AND AUDIT  23

6.            EXCEEDANCE OF THE ENVIRONMENTAL PARAMETERS  24

7.            NON-COMPLIANCE, COMPLAINTS, NOTIFICATION OF SUMMONS AND PROSECUTION  25

8.            CONCLUSIONS  26


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 Month – 24-hr Monitoring

Table 2.1   Key Personnel Contact of the Contract 7

Table 2.2   Status of Environmental Licenses, Notification and Permits  8

Table 3.1   Laboratory Measurement/Analysis Methods and Reporting Limits  10

Table 3.2   Water Quality Monitoring and Sampling Equipment 11

Table 3.3   Monitoring Parameters and Frequency  12

Table 3.4   Water Quality Monitoring Parameters  13

Table 3.5   Locations of Water Quality Monitoring Stations  14

Table 3.6   Summary of Water Quality Exceedance (In-situ Measurement) 15

Table 3.7   Summary of Water Quality Exceedance (Laboratory Analysis) 16

Table 4.1   24 Hours Water Quality Monitoring Equipment 19

Table 4.2   24-hr Water Quality Monitoring Parameters  20

Table 4.3   Location of Water Quality Monitoring Station  20

Table 4.4   Summary of Water Quality Exceedance (24-hr Monitoring)                                                   21

Table 5.1   Compliance with EP Conditions in the Reporting Month  22

Table 5.2   Waste Quantities of Dredging Works  23

Table 7.1   Environmental Complaints Log  25

Table 7.2   Cumulative Statistics on Complaints  25

Table 7.3   Cumulative Statistics on Successful Prosecutions  25

 

FIGURES:

Figure 1           Project General Layout

Figure 2           Locations of Water Quality Monitoring Stations

 

APPENDICES:

Appendix A

Project Organization Chart

Appendix B

Construction Programme

Appendix C

Action and Limit Levels

Appendix D

Copies of Calibration Certificates

Appendix E

Schedule of Water Quality Monitoring

Appendix F

Water Quality Monitoring Results and Graphical Presentation – Routine Impact Monitoring

Appendix G

Water Quality Monitoring Results and Graphical Presentation – 24-hr Monitoring

Appendix H

Event and Action Plans

Appendix I

Details of Notification of Exceedances

Appendix J

Environmental Mitigation Implementation Schedule

Appendix K

Waste Generation in Reporting Period

Appendix L

Weather Conditions for the Reporting Month

Appendix M

Proposal on Removal of Some Water Quality Monitoring Stations After Resumption of Marine Construction Works (Dredging Works and Marine Works of the Northern Part of Kwai Tsing Container Basin Only)

 

 

EXECUTIVE SUMMARY

i.      This is the Thirty Third Monthly Environmental Monitoring Audit (EM&A) Monthly Report – January 2017 for Contract No. CV/2013/04 – Dredging Works in Kwai Tsing and its Approach Channel (Agreement No. 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 December 2016 to 22 January 2017.

 

ii.    Construction Activities for the Reporting Period

During this reporting period, the principal work activities included:

·         Preparation Works of Dredging at Portion A / Zone 2B1 and 2B2 in EP

 

iii.   Water Quality Monitoring

Routine impact water quality monitoring at 21 designated monitoring stations namely C1, C2, C3, G1, G2, G3, G4, G5, G6, SR2, SR3, SR4, SR5, SR6, SR7, SR8, SR9, SR10, SR11, SR12, SR13 were conducted during the reporting period. Exceedances of TIN (in-situ & lab) and SS 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.

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

Station

Exceedance Level

DO (S&M)

DO (B)

Turbidity

NH3-N

UIA

TIN

Total

 

 

E

F

E

F

E

F

E

F

E

F

E

F

E

F

SR2

Action

0

0

0

0

0

0

0

0

0

0

-

-

0

0

Limit

0

0

0

0

0

0

0

0

0

0

-

-

0

0

SR3

Action

0

0

0

0

0

0

0

0

0

0

-

-

0

0

Limit

0

0

0

0

0

0

0

0

0

0

-

-

0

0

SR4

Action

0

0

0

0

0

0

0

0

0

0

-

-

0

0

Limit

0

0

0

0

0

0

0

0

0

0

-

-

0

0

SR5

Action

0

0

0

0

0

0

-

-

-

-

1

1

1

1

Limit

0

0

0

0

0

0

-

-

-

-

0

0

0

0

SR6

Action

0

0

0

0

0

0

-

-

-

-

-

-

0

0

Limit

0

0

0

0

0

0

-

-

-

-

-

-

0

0

SR7

Action

0

0

0

0

0

0

-

-

-

-

-

-

0

0

Limit

0

0

0

0

0

0

-

-

-

-

-

-

0

0

SR8

Action

0

0

0

0

0

0

-

-

-

-

-

-

0

0

Limit

0

0

0

0

0

0

-

-

-

-

-

-

0

0

SR9

Action

0

0

0

0

0

0

-

-

-

-

5

5

5

5

Limit

0

0

0

0

0

0

-

-

-

-

4

4

4

4

SR10

Action

0

0

0

0

0

0

-

-

-

-

4

5

4

5

Limit

0

0

0

0

0

0

-

-

-

-

1

0

1

0

SR11

Action

0

0

0

0

0

0

-

-

-

-

2

4

2

4

Limit

0

0

0

0

0

0

-

-

-

-

2

0

2

0

SR12

Action

0

0

0

0

0

0

0

0

0

0

-

-

0

0

Limit

0

0

0

0

0

0

0

0

0

0

-

-

0

0

SR13

Action

0

0

0

0

0

0

-

-

-

-

-

-

0

0

Limit

0

0

0

0

0

0

-

-

-

-

-

-

0

0

Total

Action

0

0

0

0

0

0

0

0

0

0

12

15

27

Limit

0

0

0

0

0

0

0

0

0

0

7

4

11


 

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

Station

Exceedance Level

Suspended Solids

BOD5

E. coli

NH3-N

UIA

Synthetic Detergent

 

TIN

Total

 

 

E

F

E

F

E

F

E

F

E

F

E

F

E

F

E

F

SR2

Action

0

0

-

-

-

-

0

0

0

0

-

-

-

-

0

0

Limit

0

0

-

-

-

-

0

0

0

0

-

-

-

-

0

0

SR3

Action

0

0

-

-

-

-

0

0

0

0

-

-

-

-

0

0

Limit

0

0

-

-

-

-

0

0

0

0

-

-

-

-

0

0

SR4

Action

0

0

0

0

0

0

0

0

0

0

0

0

-

-

0

0

Limit

3

3

0

0

0

0

0

0

0

0

0

0

-

-

3

3

SR5

Action

0

1

-

-

-

-

-

-

-

-

-

-

1

1

1

2

Limit

0

0

-

-

-

-

-

-

-

-

-

-

0

0

0

0

SR6

Action

3

2

-

-

-

-

-

-

-

-

-

-

-

-

3

2

Limit

0

0

-

-

-

-

-

-

-

-

-

-

-

-

0

0

SR7

Action

2

1

-

-

-

-

-

-

-

-

-

-

-

-

2

1

Limit

0

0

-

-

-

-

-

-

-

-

-

-

-

-

0

0

SR8

Action

1

0

-

-

-

-

-

-

-

-

-

-

-

-

1

0

Limit

0

0

-

-

-

-

-

-

-

-

-

-

-

-

0

0

SR9

Action

2

2

-

-

-

-

-

-

-

-

-

-

5

5

7

7

Limit

0

0

-

-

-

-

-

-

-

-

-

-

4

4

4

4

SR10

Action

1

1

-

-

-

-

-

-

-

-

-

-

4

5

5

6

Limit

0

0

-

-

-

-

-

-

-

-

-

-

1

0

1

0

SR11

Action

1

1

-

-

-

-

-

-

-

-

-

-

2

4

3

5

Limit

0

0

-

-

-

-

-

-

-

-

-

-

2

0

2

0

SR12

Action

0

0

0

0

0

0

0

0

0

0

0

0

-

-

0

0

Limit

1

2

0

0

0

0

0

0

0

0

0

0

-

-

1

2

SR13

Action

0

0

-

-

-

-

-

-

0

0

-

-

-

-

0

0

Limit

0

0

-

-

-

-

-

-

0

0

-

-

-

-

0

0

Total

Action

10

8

0

0

0

0

0

0

0

0

0

0

12

15

45

Limit

4

5

0

0

0

0

0

0

0

0

0

0

7

4

20

 

Among the 21 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.


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

Station

Exceedance Level

Turbidity

DO

NH3-N

Total

SR4

Action

0

0

0

0

Limit

0

0

0

0

SR5

Action

0

0

- 

0

Limit

0

0

- 

0

SR9

Action

0

0

- 

0

Limit

0

0

- 

0

SR10

Action

0

0

- 

0

Limit

0

0

- 

0

SR11

Action

0

0

- 

0

Limit

0

0

- 

0

SR12

Action

0

0

0

0

Limit

0

0

0

0

SR13

Action

0

0

- 

0

Limit

0

0

- 

0

Total

Action

0

0

0

0

Limit

0

0

0

0

 

iv.   Waste Management

No inert or non-inert C&D material related to dredging works was disposed and a small amount of general refuse were disposed off site in the reporting month.

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

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

vi.   Site Inspections and Audit

The Environmental Team conducted 4 site inspections in the reporting period. No particular observation was recorded in the reporting month.

vii.  Compliance with Specific EP conditions

Implementation of contractor’s mitigation for waste management and preparation works and other general site practice were checked. It was concluded that the project in compliance with the EP requirements on site mitigation measures in general.

 

viii.Construction Activities for the Coming Reporting Period

During the coming reporting period, the principal work activities included:

·         Preparation Works of Dredging at Portion A / Zone 2B1 and 2B2 in EP

·         Dredging at Portion A / Zone 2B1, 2B2 and  Zone 2C1 in EP

 

According to information provided by the Contractor, dredging works and marine works will only be carried out at area outside Berth KC5 and Tsing Yi Submarine Outfall at Subzones Z1A, Z2B1, Z2B2 and Z2C1 in future.  Refer to Section 2.1.4 and Section 2.1.10 of the EM&A Manual, routine water quality monitoring stations at SR6, SR7, SR8, SR9, SR10 and SR11 and 24 hour monitoring stations at SR9, SR10 and SR11 were proposed to be removed as according to the Proposal on Removal of Some Water Quality Monitoring Stations After Resumption of Marine Construction Works (Dredging Works and Marine Works of the Northern Part of Kwai Tsing Container Basin Only) (0394_13_ED_0332I) which no objection was received from EPD and relevant parties. The removal of the water quality monitoring at the mentioned stations will be effective from 23 January 2017. The proposal is shown in Appendix M.

Future Key Issues include:

·         Regular inspection on silt curtain deployment

·         Regular inspection on silt screen deployment

·         Implementation of EM&A Programme

·         Maintain dredging below allowable dredging rate in EP.

·         Cleaning of excess material from the decks and exposed fittings of barges and dredgers before the vessel is moved.

·         Barge loading shall be monitored to ensure material is not lost during transportation.

·         Conditions in dumping permit shall be followed strictly.