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 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

Detail of Monitoring Brief for Locating Marine Archaeological Objects

       


EXECUTIVE SUMMARY

 

i.        This is the Third Monthly Environmental Monitoring Audit (EM&A) Monthly Report – July 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 June 2014 to 22 July 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 (Figure 1).

 

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

1

1

1

0

0

0

0

0

0

0

-

-

2

1

Limit

6

8

9

12

0

0

0

0

0

0

-

-

15

20

SR3

Action

1

0

1

1

0

0

0

0

0

0

-

-

2

1

Limit

6

7

10

12

0

0

0

0

0

0

-

-

16

19

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

1

0

0

0

0

0

-

-

-

-

0

0

1

0

Limit

3

4

10

11

0

0

-

-

-

-

12

13

25

28

SR6

Action

0

0

0

0

2

1

0

0

0

0

-

-

2

1

Limit

12

13

12

13

2

2

0

0

0

0

-

-

26

28

SR7

Action

0

1

0

0

1

4

0

0

0

0

-

-

1

5

Limit

9

12

12

13

0

0

0

0

0

0

-

-

21

25

SR8

Action

0

0

0

0

0

1

0

0

0

0

-

-

0

1

Limit

8

8

11

12

1

1

0

0

0

0

-

-

20

21

SR9

Action

0

1

0

0

1

2

-

-

-

-

5

6

6

9

Limit

5

5

12

11

0

0

-

-

-

-

4

4

21

20

SR10

Action

1

1

0

0

1

1

-

-

-

-

5

3

7

5

Limit

6

6

11

12

0

0

-

-

-

-

6

9

23

27

SR11

Action

0

0

0

0

1

2

-

-

-

-

6

5

7

7

Limit

6

8

10

10

0

0

-

-

-

-

2

3

18

21

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

1

0

0

0

0

0

-

-

-

-

-

-

1

0

Limit

9

12

12

13

0

0

-

-

-

-

-

-

21

25

Total

Action

5

4

2

1

6

11

0

0

0

0

16

14

59

Limit

70

83

109

119

3

3

0

0

0

0

24

29

440

 

 

 

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

-

-

-

-

0

0

0

0

-

-

0

0

0

0

Limit

0

0

-

-

-

-

0

0

0

0

-

-

12

13

12

13

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

-

-

4

3

4

3

Limit

0

0

-

-

-

-

0

0

0

0

-

-

2

2

2

2

SR10

Action

0

0

-

-

-

-

0

0

0

0

-

-

4

5

4

5

Limit

0

0

-

-

-

-

0

0

0

0

-

-

2

2

2

2

SR11

Action

0

0

-

-

-

-

0

0

0

0

-

-

1

1

1

1

Limit

0

0

-

-

-

-

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

0

0

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

0

0

9

9

18

Limit

0

0

0

0

0

0

0

0

0

0

0

0

16

17

33

 

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

2

0

2

SR5

Action

14

18

-

32

Limit

199

809

-

1008

SR9

Action

493

29

-

522

Limit

81

58

-

139

SR10

Action

342

33

-

375

Limit

43

404

-

447

SR11

Action

125

38

-

163

Limit

135

203

-

338

SR12

Action

0

0

0

0

Limit

3

0

0

3

SR13

Action

0

14

-

14

Limit

0

1084

-

1084

Total

Action

974

132

0

1106

Limit

461

2560

0

3021

 

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 4 site inspections in the reporting period. No particular observation related to the dredging work was found in the reporting month. A suspected leakage of silt curtain was reported on 2nd July, while during site inspection on 3rd July, no leakage was observed during operation. The Contractor reported that investigation revealed the suspected case is due to overflow of surface water from the silt curtain cage. Water quality monitoring showed no project-related exceedance during the period. The Contractor was reminded to monitor the condition of the silt curtain closely, and rectify if any leakage was found.

 

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 are given in Appendix M. According to the Contractor, plan for monitoring dredged spoil, notification procedure and the relevant records will be provided for agreement prior to the commencement of dredging at the location with identified archaeological potential.

 

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 (Figure 1)

 

 

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.