7. ENVIRONMENTAL SITE INSPECTION AND AUDIT

7.1 Site Inspection

7.1.1 Site audits were carried out by ET on weekly basis to monitor the implementation of proper environmental management practices and mitigation measures in the Project site.

7.1.2 The joint site audits for Contract No. HY/2013/03 (includes Contract No. HY/2013/06 within Contract No. HY/2013/03 works area) were conducted on 3, 10, 18, 25 and 31 August 2017 by the representatives of Engineer, Contractor, ET and IEC (IEC for 25 August 2017).

7.1.3 Particular observations during the site inspection and corrective actions undertaken by the Contractor are described below:

For Contract No. HY/2013/03

27 July 2017

1. The Contractor was reminded to increase watering for dust suppression at Box Culvert B. Subsequently, watering was provided. The observation was closed on 3 August 2017.

2. The Contractor was reminded to provide a label for a NRMM found in Portion P. Subsequently, a label was provided to the NRMM found. The observation was closed on 3 August 2017.

3. The Contractor was reminded to remove stagnant water accumulated in Portion P. Subsequently, stagnant water was removed. The observation was closed on 3 August 2017.

3 August 2017

1. The Contractor was reminded to provide a label for a NRMM found near building 030. Subsequently, a label was provided to the NRMM found. The observation was closed on 10 August 2017.

2. The Contractor was reminded to remove general waste accumulated at Building 061. Subsequently, general waste was removed. The observation was closed on 10 August 2017.

10 August 2017

1. The Contractor was reminded to remove stagnant water accumulated at Building 049. Subsequently, stagnant water was removed. The observation was closed on 18 August 2017.

2. The Contractor was reminded to remove general waste accumulated at Building 037. Subsequently, general waste was removed. The observation was closed on 18 August 2017.

3. The Contractor was reminded to provide drip trays for chemical containers at Building 006. Subsequently, drip trays were provided. The observation was closed on 18 August 2017.

18 August 2017

1. The Contractor was reminded to remove general waste accumulated at Box Culvert B. Subsequently, general waste was removed. The observation was closed on 25 August 2017.

2. The Contractor was reminded to provide watering for dust suppression on site. Subsequently, watering was provided. The observation was closed on 25 August 2017.

25 August 2017

1. The Contractor was reminded to remove general waste accumulated at Building 049. Subsequently, general waste was removed. The observation was closed on 31 August 2017.

2. The Contractor was reminded to remove stagnant water accumulated at drip trays at Building 049. Subsequently, stagnant water was removed. The observation was closed on 31 August 2017.

3. The Contractor was reminded to provide a drip tray for the chemical container at Building 060. Subsequently, the chemical container was removed. The observation was closed on 31 August 2017.

4. The Contractor was reminded to provide watering for dusty material near Building 060 and 049. Subsequently, watering was provided. The observation was closed on 31 August 2017.

31 August 2017

1. The Contractor was reminded to remove or provide a drip tray for the chemical container in A6 Bridge. Follow-up actions for outstanding observation will be checked in the upcoming site inspections and reported in the coming reporting period.

For Contract No. HY/2013/06 within Contract No. HY/2013/03 works area

3 August 2017

1. Nil findings.

10 August 2017

1. Nil findings.

18 August 2017

1. Nil findings.

25 August 2017

1. Nil findings.

31 August 2017

1. Nil findings.

7.2 Advice on the Solid and Liquid Waste Management Status

7.2.1... 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.

7.2.2 The monthly 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) are detailed in Appendix E.

7.2.3 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 7.1.

Table 7.1 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)
Month/Year	Density (in tonnes/m³)	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

7.2.4 0.248 (in‘000m³) of excavated marine sediment (from Contract No. HY/2013/03), 67.927 (in‘000m³) of Inert C & D Wastes and 1.656 (in‘000m³) of Non-inert C & D Wastes were generated (from Contract No. HY/2013/03) in this reporting period. 64.331 (in‘000m³) of Inert C & D Wastes were reused in other projects and 3.596 (in‘000m³) of Inert C & D Wastes was disposed as public fill. No Inert C & D Wastes and 0.030 (in tonnes) of Non-inert C & D Wastes were generated (from Contract No. HY/2013/06 within Contract No. HY/2013/03 works area) in this reporting period. 0.030 (in tonnes) metals were generated and recycled (from Contract No. HY/2013/06 within Contract No. HY/2013/03 works area) in this reporting period.

7.2.5 The excavated marine mud from the land-based works was disposed of at the designated disposal sites within Hong Kong as allocated by the Marine Fill Committee. The Contractor of Contract No. HY/2013/03 shall ensure no spilling and overflowing of materials during loading / unloading / transportation is allowed.

7.2.6... The Contractor was reminded that chemical waste containers should be properly treated and stored temporarily in designated chemical waste storage area on site in accordance with the Code of Practice on the Packing, Labelling and Storage of Chemical Waste.

7.2.7... 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.

7.3 Environmental Licenses and Permits

7.3.1 The valid environmental licenses 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 F. 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).

7.4 Implementation Status of Environmental Mitigation Measures

7.4.1... In response to the site audit findings, the Contractor carried out corrective actions.

7.4.2... A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix G. All necessary mitigation measures at this stage of works were implemented properly.

7.4.3... 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. The marine traffic records and geographical plots of all the vessels tracks of July 2017 was provided to ER, ETL, IEC/ENPO for checking during August 2017, 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 marine traffic records and geographical plots of all the vessels tracks to demonstrate the conformance of the vessel to the proposed route in August 2017 would be provided to ER, ETL, IEC/ENPO for checking within the month of September 2017.

7.4.4... 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.

7.4.5... 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 August 2017 would be provided to ER, ETL, IEC/ENPO for checking within the month of September 2017.

7.5 Summary of Exceedance of the Environmental Quality Performance Limit

7.5.1 Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A report prepared by Contract No. HY/2011/03.

7.5.2 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.

7.5.3 There was no Action and Limit Level exceedance for noise recorded at station NMS2 and station NMS3B by the Environmental Team of Contract No. HY/2010/02 during the reporting period.

7.5.4 There was no Action and Limit Level exceedance for water quality recorded at the monitoring stations shown at Table 4.1 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.

7.5.5 Ecological monitoring results at all transects are reported in the EM&A report prepared by Contract No. HY/2010/02.

7.6...... Summary of Complaints, Notification of Summons and Successful Prosecution

7.6.1 There was one complaint received in relation to the environmental impact during the reporting period. The summary of environmental complaints is presented in Table 7.2. The details of cumulative statistics of Environmental Complaints are provided in Appendix H.

Table 7.2 Summary of Environmental Complaints for the Reporting Month

Log No.	Environmental Complaint Ref. No.	Date of Complaint Receipt	Description
011	ENPO-C0122	9 August 2017	Air pollution and water discharge

7.6.2 The complaint (ENPO-C0122) was received by EPD from a member of the public on 8 August 2017 and was referred by EPD to the ENPO. Then the ENPO forwarded the complaint by email to the ET (Materialab Consulants Ltd.) of the Contract No. HY/2013/03 on 9 August 2017.

Details of Complaint

One complaint was received by EPD on 8 August 2017, with the following information provided by EPD:

The complainant complained that there was uncovered stockpiles in the interface with Contract No. HY/2013/01 which belonged to HY/2013/03, resulting in a lot of dust spreading around affecting the health of workers. The complainant had reminded the subcontractor of HY/2013/03 to improve the situation of discharging underground water everywhere and uncovered stockpiles, but the situation did not improve.

Investigation of Complaint

Date Complaint Investigated by Environmental Team: 9 August 2017

Summary of Investigation

Site audit was conducted on 10 August 2017. The concerned location was visited. Watering was provided to the stockpiles in the interface with HY/2013/01. As confirmed by the contractor, stockpiles were sprayed with water regularly to maintain the entire surface wet and compacted and then were removed or backfilled as soon as possible where practicable. Due to airport height restriction, tarpaulin was not allowed to use for covering those stockpiles. Besides, ET did not find any discharge of underground water.

Investigation Results

The ET of Contract No. HY/2013/03 (including Contract No. HY/2013/06 within Contract No. HY/2013/03) concluded that the captioned complaint is not related to the construction activities of our contract. Nevertheless, ET has recommended the Contractor to remind workers to report dusty spots to contractor to ensure prompt response and necessary follow-up on dust suppression measures through the complaint hotline of HKBCF. The Contractor had also been reminded to comply with the requirements stipulated in the Environmental Mitigation Implementation Schedule (EMIS) of the EM&A Manual, in particular:

· Air Quality:

A2: Proper watering of exposed spoil should be undertaken throughout the construction phase:

Any excavated or stockpile of dusty material should be covered entirely by impervious sheeting or sprayed with water to maintain the entire surface wet and then removed or backfilled or reinstated where practicable within 24 hours of the excavation or unloading;

Any dusty materials remaining after a stockpile is removed should be wetted with water and cleared from the surface of roads;

A stockpile of dusty material should not be extend beyond the pedestrian barriers, fencing or traffic cones.

A3: The Contractor should undertake proper watering on all exposed spoil (with at least 8 times per day) throughout the construction phase.

· Water Quality (Construction Phase):

W2: General construction activities on land should also be governed by standard good working practice. Specific measures to be written into the works contracts should include:

Wastewater from temporary site facilities should be controlled to prevent direct discharge to surface or marine waters;

Storm drainage shall be directed to storm drains via adequately designed sand/silt removal facilities such as sand traps, silt traps and sediment basins. Channels, earth bunds or sand bag barriers should be provided on site to properly direct storm water to such silt removal facilities. Catchpits and perimeter channels should be constructed in advance of site formation works and earthworks;

Rainwater pumped out from trenches or foundation excavations should be discharged into storm drains via silt removal facilities;

Discharges of surface run-off into foul sewers must always be prevented in order not to unduly overload the foul sewerage system.

Follow up status (complaints)

During weekly site audit on 21 and 27 July, 3 and 10 August 2017, ET confirmed that the Contractor had provided workable and effective air and water quality mitigation measures on site.

Recommendations to the Contractor

The Contractor had been reminded to fully implement all air and water quality mitigation measures. ET has also recommended the Contractor to remind workers to report dusty spots to contractor to ensure prompt response and necessary follow-up on dust suppression measures through the complaint hotline of HKBCF.

Follow up Status (Overall)

ET has proposed recommendations to the Contractor, including reminding workers to report dusty spots to contractor to ensure prompt response and necessary follow-up on dust suppression measures through the complaint hotline of HKBCF, and reminded the Contractor on complying with the requirements stipulated in the Environmental Mitigation Implementation Schedule (EMIS) of the EM&A Manual to the Contractor. According to site audits conducted recently, ET confirmed and all mitigation measures stipulated in the EMIS had been implemented during site audit on 21 and 27 July, 3 and 10 August 2017, in particular to the following aspect:

· Air Quality:

A2: Proper watering of exposed spoil should be undertaken throughout the construction phase:

Any dusty materials remaining after a stockpile is removed should be wetted with water and cleared from the surface of roads;

A stockpile of dusty material should not be extend beyond the pedestrian barriers, fencing or traffic cones.

A3: The Contractor should undertake proper watering on all exposed spoil (with at least 8 times per day) throughout the construction phase.

· Water Quality (Construction Phase):

W2: General construction activities on land should also be governed by standard good working practice. Specific measures to be written into the works contracts should include:

Wastewater from temporary site facilities should be controlled to prevent direct discharge to surface or marine waters;

Rainwater pumped out from trenches or foundation excavations should be discharged into storm drains via silt removal facilities;

Discharges of surface run-off into foul sewers must always be prevented in order not to unduly overload the foul sewerage system.

7.6.3 There was no notification for summons or prosecutions received in relation to the environmental impact during this reporting period.

7.6.4 Statistics on environmental complaints, notifications of summons and successful prosecutions are provided in Appendix H.