EXECUTIVE SUMMARY

Introduction

1. This is the Final Environmental Monitoring and Audit (EM&A) Report prepared by Cinotech Consultants Limited for ¡§Contract No. HY/2011/09 ¡V Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road ¡V Section between HKSAR Boundary and Scenic Hill¡¨ (hereinafter called the ¡§Contract¡¨). This report documents the findings of Construction Phrase EM&A Works of the Contract.

2. The construction commencement of this Contract was on 22^nd February 2013.

3. As the Construction Phase EM&A Programme under HY/2011/09 have been terminated since 24^th October 2018 as per EPD¡¦s letter to SOR (EPD¡¦s ref.: ¡§( ) in AX(2) to EP771/E1/099¡¨ dated 30 November 2018), no impact monitoring (air quality, construction noise, water quality and dolphin) and weekly site audit was carried out starting from 24^th October 2018.

4. The Construction activities undertaken in the construction period were:

a) Viaduct Works (P0 ¡V P115):

¡P Bore Pilling

¡P Construction of Pile Cap

¡P Construction of Column

¡P SOP (Segment on pile)

¡P Segment Erection

¡P Concreting

¡P Grouting

¡P E&M Works

¡P Landscape Works

b) Land ¡V Portion A:

¡P Construction of Sloping Seawall

¡P Landscape Works

¡P Utilities Diversion

¡P Road Diversion

¡P Road Reinstatement

c) Land ¡V Portion C:

¡P Utilities Diversion

¡P Road Diversion

¡P Road Reinstatement

d) Works Area 3:

¡P Storage Area

e) Works Area 4:

¡P Storage Area

¡P Plant Fabrication

f) Works Area 7:

¡P Storage Area

¡P Plant Fabrication

Environmental Monitoring works

5. Environmental monitoring for the Contract was performed regularly as stipulated in the updated EM&A Manual and the monitoring results were checked and reviewed. Site Inspections/Audits were conducted once per week. The archeological site inspection were conducted every three months. The implementation of the environmental mitigation measures, Event Action Plans and environmental complaint handling procedures were also checked.

6. Summary of the non-compliance of the construction phrase of this Contract is tabulated in Table I.

Table I Summary Table for Non-compliance Recorded Due to the Contract

Environmental Monitoring	Parameter	No. of Exceedance		No. of Exceedance related to the Construction Activities of this Contract		Total No. of Exceedance related to the Construction Activities of this Contract
		Action Level	Limit Level	Action Level	Limit Level
Air Quality	1-hr TSP	2	1	0	0	0
	24-hr TSP	7	0	0	0	0
Noise	Leq(30min)	1	0	1	0	1
Water Quality	Dissolved Oxygen (DO) (Surface & Middle)	24	15	0	0	0
	Dissolved Oxygen (DO) (Bottom)	47	23	0	0	0
	Turbidity	47	120	0	0	0
	Suspended Solids (SS)	330	223	0	0	0
Underwater Noise	RMS sound pressure level re 1µPa	0	0	0	0	0
Dolphin Monitoring	Line-transect Vessel Surveys	3	1	0	0	0

1-hour TSP Monitoring

7. All 1-hour TSP monitoring was conducted as scheduled in the Contract.

8. No Action/Limit Level exceedances was recorded for 1-hour TSP monitoring due to the Contract throughout the whole Contract.

24-hour TSP Monitoring

9. All 24-hour TSP monitoring was conducted as scheduled in the Contract.

10. No Action/Limit Level exceedances was recorded for 24-hour TSP monitoring due to the Contract throughout the whole Contract.

Construction Noise

11. All construction noise monitoring was conducted as scheduled in the Contract.

12. 1 Action Level exceedance in construction noise was recorded for the complaints received throughout the construction period due to loading/unloading of metal plates and oxygen-acetylene set. The Contractor was required to implement noise mitigation measures to rectify the problem and was recommended to strengthen their site supervision and provide training for the workers regularly to increase awareness of their environmental responsibilities to minimize the noise impact to the nearby residents.

13. No Limit Level exceedance in construction noise was recorded due to the Contract throughout the whole Contract.

Water Quality

14. All water quality monitoring was conducted as scheduled in the Contract.

15. No Action/Limit Level exceedance for dissolved oxygen, turbidity and suspended solid was recorded due to the Contract throughout the whole Contract.

Dolphin

16. All dolphin-related monitoring was conducted as scheduled in the Contract. No Action/Limit Level exceedance for dolphin was recorded due to the Contract throughout the whole Contract.

Complaint Log

17. 24 environmental complaints were received since the commencement of the Contract. In addition, no case of complaint was logged since 5 May 2017. Details of the complaints are shown in Appendix E.

Notification of Summons and Successful Prosecutions

18. One successful prosecution was received by subcontractor throughout the whole Contract. Details of the successful prosecutions are shown in Appendix F.

Conclusion

19. The EM&A programme were found to be effective in monitoring impacts arising from the Contract. The findings of the environmental monitoring program suggest that no adverse impacts on sensitive receivers at the designated monitoring locations were brought about by the Contract.

20. In conclusion, the Contract was environmentally acceptable in terms of air quality, noise levels, water quality, dolphin, cultural heritage and landscape and visual.

21. Post-construction monitoring for water quality was carried out after the termination of Construction Phase EM&A Programme as per EPD¡¦s letter to SOR (EPD¡¦s ref.: ¡§( ) in AX(2) to EP771/E1/099¡¨ dated 30 November 2018) according to the updated EM&A Manual. Details of the Post-construction water quality monitoring is provided in the report as shown in Appendix H.

22. In addition, post-construction dolphin monitoring has also been started after completion of construction according to updated EM&A Manual, Section 10.7.1, and the corresponding reports will be submitted separately.