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  25

7.            NON-COMPLIANCE, COMPLAINTS, NOTIFICATION OF SUMMONS AND PROSECUTION  26

8.            CONCLUSIONS  27


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       Detailed Dredging Quantity  8

Table 2.3       Status of Environmental Licences, Notification and Permits  9

Table 3.1       Laboratory Measurement/Analysis Methods and Reporting Limits  11

Table 3.2       Water Quality Monitoring and Sampling Equipment 12

Table 3.3       Monitoring Parameters and Frequency  13

Table 3.4       Water Quality Monitoring Parameters  14

Table 3.5       Locations of Water Quality Monitoring Stations  14

Table 3.6       Summary of Water Quality Exceedance (In-situ Measurement) 16

Table 3.7       Summary of Water Quality Exceedance (Laboratory Analysis) 17

Table 4.1       24 Hours Water Quality Monitoring Equipment 20

Table 4.2       24-hr Water Quality Monitoring Parameters  21

Table 4.3       Location of Water Quality Monitoring Station  21

Table 4.4       Summary of Water Quality Exceedance (24-hr Monitoring) 22

Table 5.1       Compliance with EP Conditions in the Reporting Month  23

Table 5.2       Waste Quantities of Dredging Works  24

Table 7.1       Environmental Complaints Log  26

Table 7.2       Cumulative Statistics on Complaints  26

Table 7.3       Cumulative Statistics on Successful Prosecutions  26

 

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      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

           


EXECUTIVE SUMMARY

 

i.        This is the Fifteenth Monthly Environmental Monitoring Audit (EM&A) Monthly Report – July 2015 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 June 2015 to 22 July 2015.

 

ii.      Construction Activities for the Reporting Period

During this reporting period, the principal work activities included:

·         Dredging at Portion A / Zone 1B and Zone 2A1, 2A2, 2A3, 2C1 and 2C2 in EP

·         Dredging at Portion B / Zone 6A and 6B in EP

·         Dredging at Portion C / Zone 10 in EP

 

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, SR13 were conducted during the reporting period. Exceedances of DO (S&M), DO (B), 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

SR1

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

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

1

1

1

1

0

0

0

0

0

0

-

-

2

2

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

-

-

-

-

2

2

2

2

Limit

0

0

1

1

0

0

-

-

-

-

8

9

9

10

SR6

Action

0

0

1

0

0

0

-

-

-

-

-

-

1

0

Limit

0

1

0

1

0

0

-

-

-

-

-

-

0

2

SR7

Action

0

0

0

0

0

0

-

-

-

-

-

-

0

0

Limit

1

1

5

5

0

0

-

-

-

-

-

-

6

6

SR8

Action

0

0

0

0

0

0

-

-

-

-

-

-

0

0

Limit

1

1

1

1

0

0

-

-

-

-

-

-

2

2

SR9

Action

0

0

0

1

0

0

-

-

-

-

2

2

2

3

Limit

0

0

4

3

0

0

-

-

-

-

4

4

8

7

SR10

Action

0

0

0

0

0

0

-

-

-

-

5

5

5

5

Limit

0

0

4

4

0

0

-

-

-

-

1

1

5

5

SR11

Action

0

0

0

0

0

0

-

-

-

-

3

4

3

4

Limit

0

0

3

3

0

0

-

-

-

-

1

0

4

3

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

1

1

0

0

0

0

0

0

12

13

27

Limit

3

4

19

19

0

0

0

0

0

0

14

14

73

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

SR1

Action

0

0

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

-

-

0

0

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

0

0

0

0

0

0

0

0

0

0

0

0

-

-

0

0

SR5

Action

0

0

-

-

-

-

-

-

-

-

-

-

2

2

2

2

Limit

0

0

-

-

-

-

-

-

-

-

-

-

8

9

8

9

SR6

Action

0

0

-

-

-

-

-

-

-

-

-

-

-

-

0

0

Limit

0

0

-

-

-

-

-

-

-

-

-

-

-

-

0

0

SR7

Action

0

0

-

-

-

-

-

-

-

-

-

-

-

-

0

0

Limit

0

0

-

-

-

-

-

-

-

-

-

-

-

-

0

0

SR8

Action

0

0

-

-

-

-

-

-

-

-

-

-

-

-

0

0

Limit

0

0

-

-

-

-

-

-

-

-

-

-

-

-

0

0

SR9

Action

0

0

-

-

-

-

-

-

-

-

-

-

2

2

2

2

Limit

0

0

-

-

-

-

-

-

-

-

-

-

4

4

4

4

SR10

Action

0

0

-

-

-

-

-

-

-

-

-

-

5

5

5

5

Limit

0

0

-

-

-

-

-

-

-

-

-

-

1

1

1

1

SR11

Action

0

0

-

-

-

-

-

-

-

-

-

-

3

4

3

4

Limit

0

0

-

-

-

-

-

-

-

-

-

-

1

0

1

0

SR12

Action

0

0

0

0

0

0

0

0

0

0

0

0

-

-

0

0

Limit

0

1

0

0

0

0

0

0

0

0

0

0

-

-

0

1

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

0

0

12

13

25

Limit

0

1

0

0

0

0

0

0

0

0

0

0

14

14

29

 

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.

 

 

 

 


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

 

iii.    Waste Management

There was marine sediment (Type 1 – Open Sea Disposal and Type 2 – Confined Marine Disposal) disposed to East Sha Chau Pit IVc or Va and South of Brothers CMP1 or CMP2. 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 month.

 

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

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

 

v.       Site Inspections and Audit

The Environmental Team conducted 4 site inspections in the reporting period. The Contractor was reminded to keep the silt curtain in a good condition and to store the chemical/ mechanical fuel properly. Also general house keeping such as weeding shall be implemented in the two side of drainage area in Portion F.

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

 

vi.     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.

 

vii.   Construction Activities for the Coming Reporting Period

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

·         Dredging at Portion A / Zone 1B in EP

·         Dredging at Portion B / Zone 6A and 6B in EP

·         Dredging at Portion C / Zone 10 in EP

 

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.