Comments on Mitigation Measures
Air Quality
6.1
The major dust sources were the dumping
activities, manual sorting of non-inert waste and dump track traffic inside the
temporary CWSF. The water sprinklers were repaired and the haul road was
sufficiently dampened.
6.2
The Contractor was advised to
operate mist spraying systems and automatic water sprinklers in the temporary
CWSF.
6.3
All vehicles should be washed before leaving the site egress
by provision, operation and maintenance of automatic wheel washing facilities.
Water Quality
6.4
Maintenance of the drainage system,
including the trapezoidal channels, is required.
6.5
Remove the stagnant water or provide
pesticide for the stagnant water in the desilting chambers.
Chemical and Waste Management
6.6
Remove waste materials from site regularly
to avoid accumulation.
6.7
Handle and store chemical waste
properly.
6.8
Provide and maintain sufficient drip trays for diesel drums,
chemical containers, chemical waste storage drums and diesel operated
generator.
6.9
Maintain good house keeping at works area.
Recommendations on EM&A
Programme
6.10
The impact air quality monitoring
programme confirmed that any air quality impact from the construction
activities would be readily detected and timely actions could be taken to
rectify any non-compliance.
6.11
The EM&A programme effectively
monitored the environmental impacts from the construction activities and no
particular recommendations were advised for the improvement of the programme.
6.12
Environmental monitoring of air quality (1-hr TSP and 24-hr
TSP) for the Project was performed from November 2007 to January 2008. There was
no
6.13
There were two environmental
complaints received by EPD on 5 and 15 November 2007 concerning serious dust
emissions from the haul roads and at the loading/ unloading areas of the
temporary CWSF at TKO 137. The ET was notified on 17 December 2007. Complaint
investigations were carried out on 20 and 27 December 2007 and recommendations
were provided to the Contractor. An investigation report was submitted to EPD
on 9 January 2008.
6.14
No prosecution or notification of summon was received in the
reporting period.