3. ENVIRONMENTAL MONITORING AND AUDIT
3.1 Air Quality Monitoring Results
3.1.1 The monitoring results for AMS6 and AMS7 are reported in the monthly EM&A Reports (for June 2017, July 2017 and August 2017) prepared for Contract Nos. HY/2011/03 and HY/2010/02 respectively.
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 (for June 2017, July 2017 and August 2017) prepared by Contract No. HY/2011/03.
3.1.3 There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.
3.2 Noise Monitoring Results
3.2.1 The monitoring results for NMS2 and NMS3B are reported in the monthly EM&A Reports (for June 2017, July 2017 and August 2017) prepared for Contract No. HY/2010/02.
3.2.2 No noise exceedances were recorded at stations NMS2 and NMS3B by the ET of Contract No. HY/2010/02 during the reporting period.
3.3 Water Quality Monitoring Results
3.3.1 The monitoring results for the monitoring stations shown in Table 2.2 were reported in the monthly EM&A Report (for June 2017, July 2017 and August 2017) prepared for Contract No. HY/2010/02. There were two Action Level exceedances of suspended solids recorded at station SR3 during mid-ebb tide on 12 July 2017 and station IS7 during mid-flood tide on 14 July 2017. After investigation, it was concluded that the two exceedances were not relevant to Contract No. HY/2013/03.
3.4 Ecology Monitoring Results
3.4.1 The dolphin survey results for all transects were reported in the monthly EM&A Reports (for June 2017, July 2017 and August 2017) prepared by Contract No. HY/2010/02. There was no Action and Limit Level exceedance recorded by the Environmental Team of Contract No. HY/2010/02 during the reporting period (June 2017 to August 2017).
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 Appendix F.
3.5.2 A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix E. All necessary mitigation measures at this stage of works were implemented properly.
3.5.3 Implementation status of Regular Marine Travel Route Plan (RMTRP) was checked by ET. In general, the Contractor has complied with the plan. A route to WDII was scheduled which approval is pending. The Contractor is revising RMTRP with the route to WDII according to the comments given by IEC. The Contractor has been reminded to follow EP condition 1.9 to ensure the compliance in the submission of updated RMTRP prior to implementation and update RMTRP as soon as possible. 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 from June 2017 to August 2017 were checked by ET. The marine traffic records and geographical plots of all the vessels tracks to demonstrate the conformance of the vessel to the proposed route in June 2017, July 2017 and August 2017 were provided by Contractor to ER, IEC/ENPO for checking within the month of July 2017, August 2017 and September 2017 respectively, except one route to WDII which was arranged by the contractor of WDII. ET would keep following up on the full marine travel route record and statistics of July 2017. 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.
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. Under Contract No. HY/2013/03, no floating concrete batching plant was operated on-site during the reporting period.
3.5.5 As silt curtain was installed since May 2017, Dolphin Watching Plan (DWP) should be implemented. The status of silt curtain was reviewed by ET and there was no change on the status of silt curtain during the reporting period. Implementation status of DWP was checked by ET. The records of dolphin watching training, regular inspection of the silt curtains and visual inspection of waters surrounded by the silt curtain in June, July and August 2017 would be provided to ER, ETL, IEC/ENPO for checking within the month of July, August and September 2017 respectively.
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. The marine sediment extracted from this Contract was disposed to the Marine Fill Committee (MFC) allocated disposal sites directly without treatment during this 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 Vd of the Confined Marine Sediment Disposal Facility to the East of Sha Chau (ESC) during this reporting period.
3.6.5 Marine sediment extracted from bored piling from this Contract was disposed to allocated dumping site during this 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 3.1 Summary of Marine Sediment Disposed to Dumping Site
|
Month/Year |
Quantity disposed (in‘000m3) |
|||
|
|
HY/2013/02 |
HY/2013/03 |
HY/2013/04 |
Total |
|
June 2017 |
1.432 |
0.000 |
0.000 |
1.432 |
|
July 2017 |
0.000 |
0.000 |
0.000 |
0.000 |
|
August 2017 |
0.000 |
0.248 |
0.000 |
0.248 |
|
Total |
1.432 |
0.248 |
0.000 |
1.680 |
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 G.
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. The estimated quantity of surplus filling materials is confirmed by Resident Site Staff of Contract No. HY/2013/03. The summary of surplus filling materials delivered to other projects up to the end of August 2017 is shown in Table 3.2.
Table 3.2 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 |
|
June 2017 |
2.63925 |
0 |
14.769 |
11.238 |
0 |
0 |
26.007 |
|
July 2017 |
/ |
0 |
4.651 |
38.207 |
10.606 |
0.760 |
54.224 |
|
August 2017 |
2.3 |
0.209 |
0 |
56.126 |
2.281 |
5.716 |
64.332 |
|
Total |
/ |
0.209 |
32.266 |
105.571 |
12.887 |
6.476 |
157.200 |
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 E and section 7.2.4, due to rounding errors
ž No density was given for July 2017 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 H. 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).