14.          CONCLUSIONS AND RECOMMENDATIONS

Conclusions

 

14.1          This is the 7th Environmental Monitoring and Audit (EM&A) Report which presents the EM&A works undertaken during the period in May 2017 in accordance with EM&A Manual and the requirement under EP.

 

Air Quality Monitoring

 

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

 

14.3          All 24-hour TSP monitoring was conducted as scheduled in the reporting month, except that monitoring at Station AM4(A) – Cha Kwo Ling Public Cargo Working Area Administrative Office on 8, 12 and 29 May 2017 were cancelled due to power supply failure. The monitoring were re-scheduled to 10, 22 May and 1 June 2017 respectively. No Action/Limit Level exceedance was recorded.   

 

Construction Noise Monitoring

 

14.4          All noise monitoring was conducted as scheduled in the reporting month. Nine Action Level exceedance was recorded due to the documented complaints received in the reporting month. According to the Event and Action Plan for Construction Noise, monitoring frequency at the concerned monitoring stations was increased to check mitigation effectiveness. No Limit Level exceedance was recorded.

Water Quality Monitoring

14.5          Groundwater monitoring was conducted as scheduled in the reporting month. 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 May 2017. Therefore, monitoring results obtained in the reporting month will be considered as reference for baseline condition.

 

14.6          All marine water quality monitoring was conducted as scheduled in the reporting month. No Action/Limit Level exceedance was recorded.

 

Ecological Monitoring

 

14.7          The 2nd post-translocation coral monitoring survey was carried out on 12 May 2017. No Action/Limit Level exceedance was recorded.

 

Monitoring on Cultural Heritage

 

14.8          No Alert Alarm and Action (AAA) Level exceedance of vibration monitoring on cultural heritage was recorded in the reporting month.

 

Landscape and Visual Monitoring and Audit

14.9          No non-compliance of the landscape and visual impact was recorded in the reporting month.

 

Landfill Gas Monitoring

 

14.10      Monitoring of landfill gases in the reporting month was carried out by the Contractor at excavation location, Portion III. No Limit Level exceedance was recorded.

 

Environmental Site Inspection

 

14.11      Joint weekly site inspections were conducted by representatives of the Contractor, Engineer and Environmental Team. During site inspections in the reporting month, no non-conformance was identified

 

Complaint, Prosecution and Notification of Summons

 

14.12      10 environmental complaints, no successful prosecution or notification of summons were received during the reporting period.

Recommendations

14.13      According to environmental audits performed in the reporting month, the following recommendations were made:

 

Air Quality Impact

·          To implement dust suppression measures such as water spray on all haul roads, stockpiles, dry surfaces and open slopes.

·          To cover stockpile of dusty material by impervious material.

 

Construction Noise

·          To provide noise mitigation measures (e.g. Temporary noise barrier or Full enclosure) to PME as proposed in the approved Noise Mitigation Plan.

·          To repair the gaps between the noise barriers.

 

Water Quality Impact

·          To provide and repair the silt curtain to fully enclose the site and prevent any gap between the silt curtains.

·          To review and implement temporary drainage system.

·          To clear the litter, debris, silt and sediment in drainage or catchpits.

·          To remove the sand or dusty material deposited near the seafront.

·          To provide bund or covers to gullies and stockpile storage area on site to avoid leakage of surface runoff.

·          To divert all the water generated from construction site to de-silting facilities with enough handling capacity before discharge.

 

Waste/Chemical Management

·          To remove construction waste regularly.

 

Landscape and Visual

·          To set up proper tree protection area.