3.    ENVIRONMENTAL MONITORING AND AUDIT

 

3.1       Air Quality Monitoring Results

 

3.1.1    The monitoring results for AMS6 are reported in the monthly EM&A Reports prepared for Contract No. HY/2011/03 (from September 2015 to January 2019). The monitoring results for AMS2, AMS3B/AMS3C and AMS7/AMS7A/AMS7B are reported in the monthly EM&A Reports prepared for Contract No. HY/2010/02 (from September 2015 to August 2017), Contract No. HY/2013/01 (from September 2017 to September 2018), and Contract No. HY/2013/04 (from October 2018 to January 2019).

 

3.1.2    Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 is reported in the monthly EM&A Reports (from September 2015 to January 2019) prepared by Contract No. HY/2011/03.

 

3.1.3    There was one Action Level exceedance of 24-hr TSP level recorded at station AMS3B by the Environmental Team of Contract No. HY/2013/01 on 28 November 2017, one Action Level exceedance of 24-hr TSP level recorded at station AMS3B by the Environmental Team of Contract No. HY/2013/01 on 23 December 2017, and two Action Level exceedances of 24-hr TSP level recorded at station AMS2 and AMS3B by the Environmental Team of Contract No. HY/2013/01 on 17 January 2018 during the reporting period. After investigation, it was concluded that all exceedances were not relevant to Contract No. HY/2013/03.

 

3.1.4    There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded on other monitoring dates at station AMS2, AMS3B/AMS3C and AMS7/AMS7A/AMS7B by the Environmental Team of Contract No. HY/2010/02 (from September 2015 to August 2017), Contract No. HY/2013/01 (from September 2017 to September 2018), and Contract No. HY/2013/04 (from October 2018 to January 2019).

 

3.2       Noise Monitoring Results

 

3.2.1    The monitoring results for NMS2 and NMS3B/NMS3C are reported in the monthly EM&A Report prepared for Contract No. HY/2010/02 (from September 2015 to August 2017), Contract No. HY/2013/01 (from September 2017 to September 2018), and Contract No. HY/2013/04 (from October 2018 to January 2019).

 

3.2.2    No noise exceedances were recorded at station NMS2 and NMS3B/NMS3C by the ET of Contract No. HY/2010/02 (from September 2015 to August 2017), Contract No. HY/2013/01 (from September 2017 to September 2018), and Contract No. HY/2013/04 (from October 2018 to January 2019).

 

3.3       Water Quality Monitoring Results

 

3.3.1    The monitoring and investigation results for the monitoring stations shown in Table 2.2 were reported in the monthly EM&A Reports (marine works were conducted as silt curtain was installed on 11 May 2017 for Contract No. HY/2013/03 and therefore, water quality impact monitoring result is reported from May 2017) prepared for Contract No. HY/2010/02 (from May 2017 to August 2017), Contract No. HY/2013/01 (from September 2017 to September 2018), and Contract No. HY/2013/04 (from October 2018 to January 2019). There were Action and Limit Level exceedances recorded at different WQM stations recorded on 90 days. The following table summarized the number of exceedance on each sampling date:

 

            Table 3.1 Summary of Exceedance for Water Quality Monitoring

Sampling Date

No. of Exceedances

DO

Turbidity

SS

Action

Limit

Action

Limit

Action

Limit

12 Jul 2017

0

0

0

0

1

0

14 Jul 2017

0

0

0

0

1

0

Total: 2 Days

0

0

0

0

2

0

01 Sep 2017

8

0

0

0

0

0

06 Sep 2017

4

4

1

0

3

0

08 Sep 2017

24

4

4

0

2

1

11 Sep 2017

30

3

0

0

0

0

13 Sep 2017

13

3

0

0

0

0

15 Sep 2017

10

2

0

1

0

0

18 Sep 2017

8

2

0

0

1

0

20 Sep 2017

3

2

0

0

1

0

22 Sep 2017

17

4

0

0

0

0

25 Sep 2017

1

1

0

0

1

0

27 Sep 2017

6

1

0

0

0

0

29 Sep 2017

13

0

0

0

0

0

02 Oct 2017

3

1

0

0

0

0

04 Oct 2017

3

4

0

0

0

0

06 Oct 2017

1

2

0

0

0

0

09 Oct 2017

0

1

0

0

0

0

18 Oct 2017

0

0

0

0

1

0

20 Oct 2017

0

0

0

0

3

0

23 Oct 2017

0

0

0

0

1

0

03 Nov 2017

0

0

0

0

3

1

06 Nov 2017

0

0

0

0

5

0

08 Nov 2017

0

0

0

0

2

2

13 Nov 2017

0

0

0

0

1

0

15 Nov 2017

0

0

0

0

1

0

20 Nov 2017

0

0

0

0

1

0

22 Nov 2017

0

0

0

0

1

1

24 Nov 2017

0

0

0

0

1

0

Total: 27 Days

144

34

5

1

28

5

04 Dec 2017

0

0

0

0

3

0

06 Dec 2017

0

0

0

0

4

0

08 Dec 2017

0

0

0

0

4

0

11 Dec 2017

0

0

0

0

1

0

13 Dec 2017

0

0

0

0

1

0

20 Dec 2017

0

0

0

0

1

0

22 Dec 2017

0

0

0

0

2

0

31 Jan 2018

0

0

0

0

1

0

02 Feb 2018

0

0

0

0

2

0

Total: 9 Days

0

0

0

0

19

0

02 Mar 2018

0

0

0

0

1

0

16 Mar 2018

0

0

0

0

1

0

21 Mar 2018

0

0

0

0

1

0

30 Mar 2018

0

0

0

0

1

0

Total: 4 Days

0

0

0

0

4

0

02 Apr 2018

0

0

0

0

1

0

18 Apr 2018

0

0

0

0

2

0

20 Apr 2018

0

0

0

0

1

0

23 Apr 2018

0

0

0

0

1

0

13 May 2018

0

0

2

0

0

0

25 May 2018

1

0

0

0

0

0

28 May 2018

1

0

0

0

0

0

Total: 11 Days

2

0

2

0

9

0

01 Jun 2018

2

0

0

0

0

0

11 Jun 2018

1

0

0

0

0

0

13 Jun 2018

2

0

0

0

0

0

15 Jun 2018

4

0

0

0

0

0

25 Jun 2018

1

0

1

0

0

0

27 Jun 2018

5

0

0

0

0

0

29 Jun 2018

3

2

0

0

0

0

02 Jul 2018

6

0

0

0

0

0

04 Jul 2018

5

0

0

0

0

0

06 Jul 2018

8

5

0

0

0

0

09 Jul 2018

12

9

0

0

0

0

11 Jul 2018

2

0

1

0

0

0

13 Jul 2018

4

2

0

0

3

0

16 Jul 2018

2

2

0

0

2

0

27 Jul 2018

0

0

0

0

1

0

06 Aug 2018

12

4

0

0

0

0

08 Aug 2018

23

4

0

0

0

0

10 Aug 2018

3

2

0

0

4

0

13 Aug 2018

8

3

0

0

1

0

15 Aug 2018

2

1

1

0

0

0

17 Aug 2018

4

3

0

0

0

0

20 Aug 2018

22

2

0

0

0

0

22 Aug 2018

10

0

0

0

0

0

24 Aug 2018

3

0

0

0

1

0

27 Aug 2018

2

1

0

0

0

0

29 Aug 2018

4

1

0

0

0

0

31 Aug 2018

0

1

0

0

1

0

Total: 27 Days

150

42

3

0

13

0

03 Sep 2018

30

4

0

0

0

0

05 Sep 2018

21

5

0

0

0

0

07 Sep 2018

21

1

0

0

0

0

10 Sep 2018

48

12

0

0

1

0

12 Sep 2018

27

2

0

0

1

0

14 Sep 2018

6

4

0

0

0

0

28 Sep 2018

0

1

0

0

0

0

10 Oct 2018

0

0

0

0

1

0

24 Oct 2018

0

0

1

0

0

0

23 Nov 2018

0

0

0

0

3

0

26 Nov 2018

0

0

0

0

2

0

Total: 11 Days

153

29

1

0

8

0

07 Dec 2018

0

0

0

0

1

0

10 Dec 2018

0

0

0

0

1

0

12 Dec 2018

0

0

0

0

3

1

Total: 3 Days

0

0

0

0

5

1

 

3.3.2    After investigation, it was concluded that all exceedances were not relevant to Contract No. HY/2013/03.

 

3.3.3    There was no Action and Limit Level exceedance recorded on other monitoring dates at the monitoring stations shown at Table 2.2 by the Environmental Team of Contract No. HY/2010/02 (from May 2017 to August 2017), Contract No. HY/2013/01 (from September 2017 to September 2018), and Contract No. HY/2013/04 (from October 2018 to January 2019).

 

3.4       Ecology Monitoring Results

 

3.4.1    The dolphin survey results for all transects were reported in the monthly EM&A Reports (marine works were conducted as silt curtain was installed on 11 May 2017 for Contract No. HY/2013/03 and therefore, ecological monitoring result is reported from May 2017) prepared by Contract No. HY/2010/02 (from May 2017 to August 2017), Contract No. HY/2013/01 (from September 2017 to September 2018), and Contract No. HY/2013/04 (from October 2018 to January 2019).

 

3.4.2    Eight Limit Level exceedances were recorded for ecological monitoring at all transects by the Environmental Team of Contract No. HY/2010/02 (from May 2017 to August 2017), Contract No. HY/2013/01 (from September 2017 to September 2018) and Contract No. HY/2013/04 (from October 2018 to January 2019) during the reporting period. The following table summarized the number of exceedance during the reporting period:

 

Table 3.1A Summary of Exceedance for Dolphin Monitoring

Parameters

Action Level

Limit Level

Quarterly Analysis (Mar 2017 to May 2017)

0

1

Quarterly Analysis (Jun 2017 to Aug 2017)

0

1

Quarterly Analysis (Sep 2017 to Nov 2017)

0

1

Quarterly Analysis (Dec 2017 to Feb 2018)

0

1

Quarterly Analysis (Mar 2018 to May 2018)

0

1

Quarterly Analysis (Jun 2018 to Aug 2018)

0

1

Quarterly Analysis (Sep 2018 to Nov 2018)

0

1

Quarterly Analysis (Dec 2018 to Feb 2019)

0

1

 

3.4.3    There was no Action Level exceedance recorded on other monitoring dates for ecological monitoring at all transects by the Environmental Team of Contract No. HY/2010/02 (from May 2017 to August 2017), Contract No. HY/2013/01 (from September 2017 to September 2018) and Contract No. HY/2013/04 (from October 2018 to January 2019) during the reporting period.

 

3.5       Implementation of Environmental Measures

 

3.5.1    In response to the site audit findings, the Contractor carried out corrective actions. Details of site audit findings and the corrective actions during the reporting period are presented in monthly EM&A Reports (from September 2015 to January 2019) for Contract No. HY/2013/03 (includes the construction works of Contract No. HY/2013/06 within Contract No. HY/2013/03 works area).

 

3.5.2    A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix E. All necessary mitigation measures were implemented properly during the reporting period.

 

3.5.3    Implementation status of Regular Marine Travel Route Plan (RMTRP) was checked by ET. Training of marine travel route for marine vessels operator was given to relevant staff and relevant records were kept properly. Marine traffic records which indicated the number of trips data for pelican barge, hopper barge, tug boat, floating concrete batching plant and derrick lighter on the implementation of RMTRP were checked by ET. Marine traffic records and geographical plots of all the vessels tracks to demonstrate the conformance of the vessel to the proposed route were provided by Contractor to ER, ETL, IEC/ENPO for checking during the reporting period. The implementation of marine traffic follows the Regular Marine Travel Route Plan with respect to ET¡¦s checking on the marine traffic records for the reporting period. As confirmed by RSS, all surplus filling materials transported from Contract No. HY/2013/03 to other projects by marine vessels have been completed with the last batch delivered on 07 May 2018.

 

3.5.4    With respect to condition 3.26A of EP-353/2009/K approved by EPD on 11 April 2016, the numbers and operating periods of floating grout production facilities and floating concrete batching plants on-site to review on the compliance to this EP condition were checked during the reporting period.

 

3.5.5    Dolphin Watching Plan (DWP) was implemented as silt curtain was installed on 11 May 2017. Implementation status of DWP was checked by ET. Before the installation of silt curtain, ET conducted visual inspection of the presence of dolphins in the surrounding water. Besides, dolphin watching training was provided to the representatives of the Contractor during April 2017. The records of dolphin watching training, regular inspection of the silt curtains and visual inspection of waters surrounded by the silt curtain were provided to ER, ETL, IEC/ENPO for checking during the reporting period. The status of silt curtain was reviewed by ET and there was no change on the status of silt curtain during the reporting period. As all the works in Box Culvert B had been completed, the silt curtain was uninstalled. The Dolphin Watching Plan (DWP) is no longer applicable.

 

3.5.6    The landscape work of green roof for Contract No. HY/2013/03 was commenced on 07 November 2017. The landscape work of all areas at ground level for Contract No. HY/2013/03 was commenced at early February 2018. Detail commencement date of each building were shown in Table 3.2. The implementation of mitigation measures for landscape and visual resources recommended in the EIA Report were monitoring during the reporting period (until 24 October 2018). Landscape and visual mitigation measures in accordance with the EP, EIA and EM&A Manual were implemented by the Contractor. As all the sections under Contract No. HY/2013/03 (includes Contract No. HY/2013/06 within Contract No. HY/2013/03 works area) were handed over to the relevant authorities on 24 October 2018 and the site had been changed to a closed area, the implementation of mitigation measures for landscape and visual resources recommended in the EIA Report could not be monitored from 24 October 2018.

 

            Table 3.2 Commencement date of green roof for each building

Building No. of Green Roof

Commencement dates of planting for roof greening

037

07 Nov 2017

043

20 Dec 2017

041

27 Dec 2017

026

22 Jan 2018

039

22 Jan 2018

All areas at ground level

Early Feb 2018

031

08 Mar 2018

046

08 Mar 2018

 

3.6       Advice on the Solid and Liquid Waste Management Status

 

3.6.1    The Contractor of Contract No. HY/2013/03 registered as a chemical waste producer for the Contract. Sufficient numbers of receptacles were available for general refuse collection and sorting.

 

3.6.2    No extracted marine sediment was treated using cement solidification/stabilisation (Cement S/S) techniques under Contract No. HY/2013/03 during this reporting period. Marine sediment extracted from this Contract was disposed to the Marine Fill Committee (MFC) allocated disposal sites directly without treatment during the reporting period. As a practical mean, the disposal operation is managed by one contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from all three Contracts (Contract Nos. HY/2013/02, HY/2013/03 and HY/2013/04).

 

3.6.3    The barge for disposal of marine sediment was morn at the temporary loading and unloading at the east shore of the HKBCF Island, which has been being used by reclamation contractor (Contract No. HY/2010/02) for reclamation activities. In terms of safety consideration and to avoid mixing of sediment between contracts, each dumping date was allocated to one Contract. The quantity of marine sediment disposed on each date was from one Contract.

 

3.6.4    During dumping, Contractor of Contract No. HY/2013/03 is responsible for transporting the marine sediment from the site area of Contract No. HY/2013/03 to the barge. The estimated quantity of marine sediment in each truck is confirmed by Resident Site Staff of Contract Nos. HY/2013/02, HY/2013/03 and HY/2013/04. The trip tickets for transportation and disposal of marine sediment are collected and checked. Contract No. HY/2013/03 as the dumping permit holder is responsible for reporting to EPD the quantity disposed of as the condition stipulated in the dumping permit. The disposal site allocated to this Project are the Mud Pit CMP Va and the Mud Pit CMP2 of the Confined Marine Sediment Disposal Facility to the South of The Brothers, and Mud Pit CMP Vd of the Confined Marine Sediment Disposal Facility to the East of Sha Chau (ESC) during the reporting period.

 

3.6.5    Marine sediment extracted from bored piling from this Contract was disposed to allocated dumping site during the reporting period. As confirmed by RSS, all marine sediments extracted from HY/2013/02, HY/2013/03 and HY/2013/04 have been completed with the last batch disposal on 30 August 2017. The summary of marine sediment disposed during this reporting period is shown in the following table:

           

Table 3.3 Summary of Marine Sediment Disposed to Dumping Site

Month/Year

Quantity disposed (in¡¥000m3)

 

HY/2013/02

HY/2013/03

HY/2013/04

Total

Jan 2016

1.272

1.950

0.800

4.022

Feb 2016

2.816

2.328

0.704

5.848

Mar 2016

0.600

2.464

3.942

7.006

Apr 2016

5.128

5.602

5.028

15.758

May 2016

0.000

0.000

0.000

0.000

Jun 2016

1.200

4.584

1.578

7.362

Sub-Total

11.016

16.928

12.052

39.996

Jul 2016

0.728

10.728

3.690

15.146

Aug 2016

1.784

1.544

4.428

7.756

Sep 2016

2.328

6.816

3.888

13.032

Oct 2016

1.096

2.376

5.286

8.758

Nov 2016

0.000

0.000

0.000

0.000

Dec 2016

1.568

4.960

2.538

9.066

Cat L in Dec 2016

0.000

2.792

3.570

6.362

Sub-Total

18.520

46.144

35.452

100.116

Jan 2017

0.000

0.656

6.552

7.208

Feb 2017

0.088

0.264

1.380

1.732

Mar 2017

0.000

0.000

0.000

0.000

Apr 2017

0.624

1.288

0.000

1.912

May 2017

0.000

1.440

0.000

1.440

Jun 2017

1.432

0.000

0.000

1.432

Jul 2017

0.000

0.000

0.000

0.000

Aug 2017

0.000

0.248

0.000

0.248

Total

20.664

50.040

43.384

114.088

            Note: All sediments are in Type II disposal method except Cat L (in Type I)

 

3.6.6    The summary of waste flow table for Contract No. HY/2013/03 (includes Contract No. HY/2013/06 within Contract No. HY/2013/03 works area) is detailed in Appendix F.

 

3.6.7    Contract No. HY/2013/03 has been assigned to arrange for delivery of surplus filling materials from Contract No. HY/2013/03 to other projects, including Tuen Mun - Chek Lap Kok Link (TM- CLKL) project of HZMB, the Airport Authority Hong Kong¡¦s Three Runway (3RS) Project, Wan Chai Development Phase II project, Contract No. HY/2013/02 of HKBCF and Hong Kong Link Road (HKLR) project of HZMB. As confirmed by RSS, all surplus filling materials delivery to other projects have been completed with the last batch on 07 May 2018. The total transported quantity up to the last batch is 379.48358 (in¡¥000m³). The summary of surplus filling materials delivered to other projects up to the end of May 2018 is shown in Table 3.4.


Table 3.4 Summary of Surplus Filling Materials Delivered from Contract No. HY/2013/03 to other projects

Month/Year

Density (in tonnes/m3)

Quantity disposed (in ¡¥000m3)

To HY/2013/02

To TM-CLKL Project

To 3RS Project

To WDII Project

To HKLR Project

Total

May 2017

2.3

0

12.637

0

0

0

12.637

Jun 2017

2.63925

0

14.769

11.238

0

0

26.007

Jul 2017

1.9

0

4.406

34.875

10.048

0.760

50.089

Aug 2017

1.9

0.480

0

67.942

2.761

7.455

78.638

Sep 2017

1.9

5.544

0

62.770

0

4.648

72.962

Oct 2017

/

3.384

0

45.92809

0

0

49.31209

Nov 2017

/

5.412

0

5.507

0

0

10.919

Dec 2017

/

12.57173

0

0

0

0

12.57173

Jan 2018

/

10.228

0

0

0

0

10.228

Feb 2018

/

0

0

0

0

0

0

Mar 2018

/

0.45276

0

0

0

0

0.45276

Apr 2018

/

0

42.544

0

0

0

42.544

May 2018

/

0

13.123

0

0

0

13.123

Total

/

38.07249

87.479

228.26009

12.809

12.863

379.48358

                Remarks:

ž    The variation in density is due to different compositions of surplus filling materials

ž    There may be discrepancies in the total quantities with the quantities of inert C&D materials stated in Appendix F, due to rounding errors

ž    No density was given from October 2017 to May 2018 due to the direct volume figures as provided and confirmed by the RSS

 

3.6.8    Contractor of Contract No. HY/2013/03¡¦s site arrangement for disposal of bentonite slurry to Tseung Kwan O Area 137 Fill Bank was checked by ET and formal consent has been obtained from Tseung Kwan O Area 137 Fill Bank for receiving used bentonite slurry generated from Contract No. HY/2013/03.

 

3.7       Environmental Licences and Permits

 

3.7.1    The valid environmental licences and permits for Contract No. HY/2013/03 (includes Contract No. HY/2013/06 within Contract No. HY/2013/03 works area) during the reporting period are summarized in Appendix G. The Contractor of Contract No. HY/2013/06 was advised to register as a chemical waste producer when chemical waste is expected to generate for the foreseeable future from the operations (For Registration as Waste Producer Pursuant to Waste Disposal (Chemical Waste) (General) Regulation).