TABLE OF CONTENTS

 

1.         INTRODUCTION   Error! Bookmark not defined.

2.         BASIC PROJECT INFORMATION   Error! Bookmark not defined.

3.         ROUTINE IMPACT WATER QUALITY MONITORING   Error! Bookmark not defined.

4.         24-HR WATER QUALITY MONITORING   Error! Bookmark not defined.

5.         ENVIRONMENTAL SITE INSPECTION AND AUDIT   Error! Bookmark not defined.

6.         EXCEEDANCE OF THE ENVIRONMENTAL PARAMETERS   Error! Bookmark not defined.

7.         COMPLAINTS, NOTIFICATION OF SUMMONS AND PROSECUTION   Error! Bookmark not defined.

8.         CONCLUSIONS   Error! Bookmark not defined.


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 Error! Bookmark not defined.

Table 2.2       Detail Dredging Quantity  Error! Bookmark not defined.

Table 2.3       Status of Environmental Licences, Notification and Permits  Error! Bookmark not defined.

Table 3.1       Laboratory Measurement/Analysis Methods and Reporting Limits  Error! Bookmark not defined.

Table 3.2       Water Quality Monitoring and Sampling Equipment Error! Bookmark not defined.

Table 3.3       Monitoring Parameters and Frequency  Error! Bookmark not defined.

Table 3.4       Water Quality Monitoring Parameters  Error! Bookmark not defined.

Table 3.5       Locations of Water Quality Monitoring Stations  Error! Bookmark not defined.

Table 3.6       Summary of Water Quality Exceedance (In-situ Measurement) Error! Bookmark not defined.

Table 3.7       Summary of Water Quality Exceedance (Laboratory Analysis) Error! Bookmark not defined.

Table 4.1       24 Hours Water Quality Monitoring Equipment Error! Bookmark not defined.

Table 4.2       24-hr Water Quality Monitoring Parameters  Error! Bookmark not defined.

Table 4.3       Location of Water Quality Monitoring Station  Error! Bookmark not defined.

Table 4.4       Summary of Water Quality Exceedance (24-hr Monitoring) Error! Bookmark not defined.

Table 5.1       Compliance with EP Conditions in the Reporting Month  Error! Bookmark not defined.

Table 5.2       Waste Quantities of Dredging Works  Error! Bookmark not defined.

Table 7.1       Environmental Complaints Log  Error! Bookmark not defined.

Table 7.2       Cumulative Statistics on Complaints  Error! Bookmark not defined.

Table 7.3       Cumulative Statistics on Successful Prosecutions  Error! Bookmark not defined.

 

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 and Red Tide Occurrences for the Reporting Month

Appendix M

Notification Procedure for Discovery of Archaeological Deposits

           


EXECUTIVE SUMMARY

 

i.      This is the Forth Monthly Environmental Monitoring Audit (EM&A) Monthly Report – August 2014 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 July 2014 to 22 August 2014.

 

ii.    Construction Activities for the Reporting Period

During this reporting period, the principal work activities included:

·         Dredging at Portion D / Zone 13A in EP

·         Dredging at Portion A / Zone 4A 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, Turbidity and TIN (in-situ & lab) 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

8

9

9

11

0

0

0

0

0

0

-

-

17

20

SR3

Action

0

0

0

0

0

0

0

0

0

0

-

-

0

0

Limit

8

8

10

10

0

0

0

0

0

0

-

-

18

18

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

-

-

-

-

0

0

0

0

Limit

8

8

8

8

0

0

-

-

-

-

12

11

28

27

SR6

Action

0

0

0

0

4

5

0

0

0

0

-

-

4

5

Limit

9

11

13

13

0

0

0

0

0

0

-

-

22

24

SR7

Action

1

0

0

0

3

4

0

0

0

0

-

-

4

4

Limit

10

11

12

13

0

0

0

0

0

0

-

-

22

24

SR8

Action

0

1

0

0

1

3

0

0

0

0

-

-

1

4

Limit

6

7

11

13

1

0

0

0

0

0

-

-

18

20

SR9

Action

0

0

0

0

2

2

-

-

-

-

1

6

3

8

Limit

4

6

11

13

0

0

-

-

-

-

4

2

19

21

SR10

Action

0

2

0

0

2

4

-

-

-

-

3

2

5

8

Limit

8

5

12

12

0

0

-

-

-

-

7

4

27

21

SR11

Action

0

0

0

0

0

0

-

-

-

-

5

1

5

1

Limit

5

5

13

13

0

0

-

-

-

-

2

5

20

23

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

1

0

0

0

0

-

-

-

-

-

-

0

1

Limit

11

11

13

13

0

0

-

-

-

-

-

-

24

24

Total

Action

1

4

0

0

12

18

0

0

0

0

9

9

53

Limit

77

81

112

119

1

0

0

0

0

0

25

22

437

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

1

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

-

-

-

-

0

0

0

0

-

-

0

1

0

1

Limit

0

0

-

-

-

-

0

0

0

0

-

-

13

12

13

12

SR6

Action

2

0

-

-

-

-

0

0

0

0

-

-

-

-

2

0

Limit

0

0

-

-

-

-

0

0

0

0

-

-

-

-

0

0

SR7

Action

0

1

-

-

-

-

0

0

0

0

-

-

-

-

0

1

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

-

-

3

3

3

3

Limit

0

0

-

-

-

-

0

0

0

0

-

-

0

0

0

0

SR10

Action

0

0

-

-

-

-

0

0

0

0

-

-

3

3

3

3

Limit

0

0

-

-

-

-

0

0

0

0

-

-

0

0

0

0

SR11

Action

0

0

-

-

-

-

0

0

0

0

-

-

0

0

0

0

Limit

0

0

-

-

-

-

0

0

0

0

-

-

-

-

0

0

SR12

Action

0

0

0

0

0

0

0

0

0

0

0

0

-

-

0

0

Limit

1

0

0

0

0

0

0

0

0

0

0

0

-

-

1

0

SR13

Action

0

0

-

-

-

-

0

0

0

0

-

-

-

-

0

0

Limit

0

0

-

-

-

-

0

0

0

0

-

-

-

-

0

0

Total

Action

2

1

0

0

0

0

0

0

0

0

0

0

6

7

16

Limit

2

0

0

0

0

0

0

0

0

0

0

0

13

12

27

 

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. Exceedances of DO and Turbidity were recorded at various monitoring stations, detail of exceedance are summarized in Table III. However, investigation indicated these exceedances were not related to the Project works.

 

 

 

 


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

30

13

-

43

Limit

0

750

-

750

SR9

Action

255

23

-

278

Limit

12

319

-

331

SR10

Action

109

38

-

147

Limit

16

561

-

577

SR11

Action

30

40

-

70

Limit

175

377

-

552

SR12

Action

0

0

0

0

Limit

29

0

0

29

SR13

Action

0

10

-

10

Limit

0

1230

-

1230

Total

Action

424

124

0

548

Limit

232

3237

0

3469

 

iii.   Waste Management

There was marine sediment (Type 1 – Open Sea 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.   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 5 site inspections in the reporting period. No particular observation related to the dredging work was found in the reporting month. The Contractor is reminded to maintain good dredging work practice, including steady transfer of grab bucket, extension of retention time above silt curtain cage, lowering of grab bucket into the hopper barge and close the grab bucket while back transferring to the silt curtain cage.

 

Pursuant to Condition 3.4 of the EP, the Contractor has arranged a monitoring brief, on 2nd July, for the dredging works staff about the possibility of locating archaeological objects according to the requirement set out in Section 8.1 of the EM&A Manual. Details of the brief, including presentation slides, marine archaeologist CV, and the attendance list for discovery of archaeological deposits were given in EM&A Report July 2014. The Notification Procedure for Discovery of Archaeological Deposits for the Project is provided in Appendix M.

 


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.

 

vii.  Construction Activities for the Coming Reporting Period

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

·         Dredging at Portion D / Zone 13A in EP

·         Dredging at Portion A/ Zone 4A 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.