3.         MONITORING RESULTS

Weather Conditions

3.1              The weather during monitoring sessions was summarized in Table 3.1.

 

Table 3.1    Summary of Weather Conditions in the Reporting Period

Reporting Month

General Weather Conditions

February 2017

Sunny and Rainy

March 2017

Rainy and Cloudy

April 2017

Sunny and Rainy

 

3.2              The detail of weather conditions for each individual monitoring session was presented in monthly EM&A report.

Air Quality

3.3              All 1-hour TSP monitoring was conducted as scheduled in the reporting quarter. No Action/Limit Level exceedance was recorded.

 

February 2017

3.4              All 24-hour TSP monitoring was conducted as scheduled in the reporting month, except at Station AM4(A) – Cha Kwo Ling Public Cargo Working Area Administrative Office on 27 January and 1 February 2017 were cancelled due to power supply failure. The monitoring were re-scheduled to 2 and 3 February 2017 respectively. No Action/Limit Level exceedance was recorded.

 

March 2017

3.5              All 24-hour TSP monitoring was conducted as scheduled in the reporting month, except at Station AM4(A) – Cha Kwo Ling Public Cargo Working Area Administrative Office on 6 and 28 March 2017 were cancelled due to power supply failure. The monitoring were re-scheduled to 7 and 29 March 2017 respectively. No Action/Limit Level exceedance was recorded.

 

April 2017

3.6              All 24-hour TSP monitoring was conducted as scheduled in the reporting month. No Action/Limit Level exceedance was recorded.

 

3.7              The graphical presentations of the air quality monitoring results are shown in Appendix C.

Construction Noise

February 2017

3.8              All construction noise was conducted as scheduled in the reporting month. Two (2) Action Level exceedance on 9 and 13 February 2017 was recorded due to the documented complaints received from monitoring station in the reporting month. No Limit Level exceedance was recorded.

 

March 2017

3.9              All construction noise monitoring was conducted as scheduled in the reporting month. Two (2) Action Level exceedance on 8 and 13 March 2017 was recorded due to the documented complaints received from monitoring station in the reporting month. One non-Project related Limit Level exceedance was recorded.

 

April 2017

3.10          All construction noise monitoring was conducted as scheduled in the reporting month. No Action/Limit Level exceedance was recorded.

 

3.11          The graphical presentations of the noise monitoring results are shown in Appendix D.

Water Quality

3.12          Groundwater quality monitoring was conducted as scheduled in the reporting quarter. Three (3) Action Level Exceedance and Twenty-three (23) Limit Level exceedance was recorded. According to the information provided by the Contractor, no tunnel boring or tunnel construction works were carried out in both Lam Tin side and Tseung Kwan O side in the reporting quarter. The exceedance are considered to be non-Project related. The graphical presentations of the groundwater quality monitoring results are shown in Appendix E.

 

3.13          All marine water monitoring was conducted as scheduled in the reporting quarter. No Action/Limit Level exceedance was recorded. The graphical presentations of the marine water quality monitoring results are shown in Appendix F.

 

3.14          Construction phase daily piezometer monitoring was not carried out in this reporting period as there is no tunnel construction activities are carried out within +/- 50m of the piezometer gate in plan.

Ecological Monitoring

3.15          Post-translocation coral monitoring survey shall be conducted once every 3 months for a period of 12 months after completion of coral translocation. The 1st post-translocation coral monitoring survey was carried out on 6 March 2017. No action/limit level of mortality was exceeded in the monitoring survey conducted in March 2017. The 2nd post-translocation coral monitoring survey is scheduled in May 2017.

Monitoring on Cultural Heritage

3.16          Monitoring of vibration impacts at Cha Kwo Ling Tin Hau Temple commenced on 8 April 2017. No Alert Alarm and Action (AAA) Level exceedance was recorded in April 2017.

Landscape and Visual Monitoring and Audit

3.17          The implementation of landscape and visual mitigation measures was checked during the environmental site inspections. Recommended follow-up actions have been discharged by the Contractor.  Details of the audit findings and implementation status are presented in Appendix H.

Landfill Gas Monitoring

3.18          Monitoring of landfill gases commenced in December 2016 and were carried out by the Contractor at excavation location, Portion III in the reporting quarter. No Limit Level exceedance was recorded. The graphical presentations of the landfill gas monitoring results are shown in Appendix G.

Waste Management 

3.19          Wastes generated from this Project include inert construction and demolition (C&D) materials, non-inert C&D materials and marine sediments.  Details of waste management data is presented in Appendix I.

Influencing Factors on the Monitoring Results

3.20          During the reporting period, the major dust and noise source identified at the designated monitoring stations are as follows:

 

Station

Major Dust Source

AM1 – Tin Hau Temple

Road Traffic at Cha Kwo Ling Road

AM2 – Sai Tso Wan Recreation Ground

N/A

AM3 – Yau Lai Estate Bik Lai House

Road Traffic near Eastern Cross Harbour Tunnel Toll Plaza

AM4(1) - Sitting-out Area at Cha Kwo Ling Village

Road Traffic at Cha Kwo Ling Road

AM4(A)(2)(*) - Cha Kwo Ling Public Cargo Working
Area Administrative Office

Road Traffic at Cha Kwo Ling Road

AM5(A)(*) - Tseung Kwan O DSD Desilting
Compound

Vehicle Movement within the Desilting
Compound

AM6(A)(*) - Park Central, L1/F Open Space Area

Road Traffic at Po Yap Road

Table 3.2    Major Dust Sources during the Monitoring in the Reporting Period

Remarks:  (1) For 1-hour TSP monitoring; (2) For 24-hour TSP monitoring

(*) Air quality monitoring at designated station AM4(24-hr TSP), AM5 and AM6 was rejected by the premise owners. Therefore, baseline and impact air quality monitoring works were carried out at alternative air quality monitoring stations AM4(A) (24-hr TSP only), AM5(A) and AM6(A) respectively.

 

Table 3.3    Major Noise Sources during the Monitoring in the Reporting Period

Monitoring Stations

Locations

Major Noise Source

CM1

Nga Lai House, Yau Lai Estate Phase 1, Yau Tong

Road Traffic near Eastern Cross Harbour Tunnel Toll Plaza

CM2

Bik Lai House, Yau Lai Estate Phase 1, Yau Tong

CM3

Block S, Yau Lai Estate Phase 5, Yau  Tong

Road Traffic near Eastern Cross Harbour Tunnel Toll Plaza

CM4

Tin Hau Temple, Cha Kwo Ling

Road Traffic at Cha Kwo Ling Road

CM5

CCC Kei Faat Primary School, Yau Tong

Road Traffic at Yau Tong Road

CM6(A)(*)

Site Boundary of Contract No. NE/2015/02 near Tower 1, Ocean Shores

Road Traffic at O King Road near Ocean Shores

CM7(A)(*)

Site Boundary of Contract No. NE/2015/02 near Tower 7, Ocean Shores

Road Traffic at Tong Yin Street

CM8(A)(*)

Park Central, L1/F Open Space Area

Road Traffic at Po Yap Road