Comments on Mitigation Measures
Air Quality
6.1
The major dust sources were the dump
track traffic, dumping and sorting activities inside the temporary CWSF. The
Contractor was recommended to dampen the haul road and provide water spraying
to all dusty operations.
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 ensured 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
There were exceedances recorded in
the reporting quarter and the exceedances were considered related to the
Project. The Contractor was recommended to implement sufficient dust
suppression measures including frequent water dampening programme along the
haul roads and for dusty operations during dry weather and hard pave the areas
which considered to have potential dust impact.
6.12
Environmental monitoring of air quality (1-hr TSP and 24-hr
TSP) for the Project was performed from February 2007 to April 2007. There were
two limit level 24-hr TSP exceedances recorded in the reporting period.
6.13
No complaints, prosecutions or notifications of summons were
received in the reporting period.