5. COMMENTS, RECOMMENDATIONS AND CONCLUSIONS

5.1 Comments

5.1.1 According to the environmental site inspections undertaken during the reporting period, the following recommendations were provided:

For Contract No. HY/2013/03

1. CHEC was reminded to remove the stagnant water accumulated on site;

2. CHEC was reminded to remove the construction and general waste accumulated on site;

3. CHEC was reminded to put the chemicals to chemical store;

4. CHEC was reminded to provide vehicle washing facilities on site;

5. CHEC was reminded to provide drip tray for the chemical on site; and

6. CHEC was reminded to clean the U channel on site.

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

¡± No recommendation.

5.1.2 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.

5.2 Recommendations

5.2.1 With implementation of the recommended environmental mitigation measures, the contract¡¦s environmental impacts were considered environmentally acceptable. The weekly environmental site inspections ensured that all the environmental mitigation measures recommended were effectively implemented.

5.2.2 The recommended environmental mitigation measures, as included in the EM&A programme, effectively minimize the potential environmental impacts from the contract. Also, the EM&A programme effectively monitored the environmental impacts from the construction activities and ensure the proper implementation of mitigation measures. No particular recommendation was advised for the improvement of the programme.

5.3 Conclusions

5.3.1 Commencement of Contract No. HY/2013/03 took place on 10 April 2015 and the construction works of Contract No. HY/2013/03 commenced on 29 August 2015 (commencement of Contract No. HY/2013/06 took place on 14 August 2015 and the construction works of Contract No. HY/2013/06 commenced on 13 September 2016 within Contract No. HY/2013/03 works area). This is the 11th Quarterly EM&A Report summarising the findings of EM&A activities conducted under Contract No. HY/2013/03 from 01 March 2018 to 31 May 2018 (includes the findings of EM&A activities conducted under Contract No. HY/2013/06 within Contract No. HY/2013/03 works area from 01 March 2018 to 31 May 2018).

5.3.2 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 Reports (for March 2018, April 2018 and May 2018) prepared by Contract No. HY/2011/03.

5.3.3 There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS2, AMS3B and AMS7B by the Environmental Team of Contract No. HY/2013/01 during the reporting period.

5.3.4 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/2013/01 during the reporting period.

5.3.5 There were Action Level exceedances of suspended solids recorded on eight days, Dissolved Oxygen and Turbidity recorded on three days by the Environmental Team of Contract No. HY/2013/01 during reporting period. After investigation, it was concluded that all exceedances were not relevant to Contract No. HY/2013/03. There was no Action and Limit Level exceedance recorded on other monitoring dates at the monitoring stations shown as shown at Table 2.2 by the Environmental Team of Contract No. HY/2013/01 during the reporting period.

5.3.6 Ecological monitoring results at all transects are reported in the EM&A report prepared by Contract No. HY/2013/01.

5.3.7 Environmental site inspection was carried out on 01, 08, 16, 22 and 29 March 2018, 06, 12, 20 and 26 April 2018, 03, 10, 17, 25 and 31 May 2018 (includes Contract No. HY/2013/06 within Contract No. HY/2013/03 works area). Recommendations on remedial actions were given to the Contractors for the deficiencies identified during the site inspections.

5.3.8 There were no complaints received in relation to the environmental impact during the reporting period.

5.3.9 There were no notifications of summons or prosecutions received during the reporting period.