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 March 2017, April 2017 and May 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 March 2017, April 2017 and May 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 March 2017, April 2017 and May 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

3.3.3.. As silt curtain was installed on 11 May 2017 and therefore, monitoring result is reported from May 2017. The monitoring results for the monitoring stations shown in Table 2.2 were reported in the monthly EM&A Report (for May 2017) prepared for 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 May.

3.4 Ecology Monitoring Results

3.4.1 As silt curtain was installed on 11 May 2017 and therefore, monitoring result is reported from May 2017. The dolphin survey results for all transects were reported in the monthly EM&A Reports (for May 2017) prepared by Contract No. HY/2010/02. One limit level exceedance was recorded in the monitoring period (March 2017 to May 2017).

3.4.2 During this reporting period, silt curtain was installed by Contract No. HY/2013/03. After checking the Marine Travel Routes record provided by the Contractor, there were twenty-two and forty-four trips of barges recorded on April and May 2017 in the reporting period. All marine transportation recorded were restricted and followed the Regular Marine travel Route Plan. Training of marine travel route for marine vessels operator was given to relevant staff and all barges recorded during the reporting period were travelled in regular travel routes.

3.4.3 The exceedance is still under investigation by Contract No. HY/2010/02. The investigation report (including the causes of exceedance, action taken and recommendation for mitigation) for Action or Limit Level Non-compliance will be prepared by the ET of Contract No. HY/2010/02 and detailed in the quarterly EM&A Report prepared for Contract No. HY/2010/02. The implementation of Regular Marine Travel Route Plan for the above mentioned barges of marine transportation undertaken by Contract No. HY/2013/03 during the reporting period were checked by the ET. The Regular Marine Travel Route Plan were prepared and given to marine vessels operators to use in order to minimize the chance of vessel collision and the routes would not go through the dolphin hotspot in Brothers Islands.

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. 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 March 2017 to May 2017 were checked by ET. Marine traffic records of March 2017, April 2017 and May 2017 were provided by Contractor to ER, IEC/ENPO for checking within the month of April 2017, May 2017 and June 2017 respectively. 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, one floating concrete batching plant was operated on-site during March 2017 and no floating concrete batching plant was operated on-site during April and May 2017.

3.5.5 As silt curtain was installed on 11 May 2017, Dolphin Watching Plan (DWP) should be implemented. 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 in May 2017 would be provided to ER, ETL, IEC/ENPO for checking within the month of June 2017.

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. 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
March 2017	0	0	0	0
April 2017	0.624	1.288	0	1.912
May 2017	0	1.440	0	1.440
Total	0.624	2.728	0	3.352

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 Tuen Mun - Chek Lap Kok Link (TM-CLKL) project of HZMB by marine access from May 2017. 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 TM-CLKL project up to the end of May 2017 is shown in Table 3.2.

Table 3.2 Summary of Surplus Filling Materials Delivered to TM-CLKL Project

Month/Year	Quantity disposed (in ‘000m³)
Month/Year	HY/2013/03
May 2017	12.637
Total	12.637

Note:

The disposal quantity of surplus filling materials provided by Resident Site Staff is in tonnes (for Contract No. HY/2013/03: 29,065 tonnes). In order to convert the disposal quantity from tonnes to m³, a conversion factor is used and shown as follows:

Volume (in m³) = Mass (in tonnes) / 2.3 (in tonnes/ m³)

Where 2.3 (in tonnes/ m³) is the density of surplus filling materials provided by the Contractor

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).