10 RECOMMENDATIONS AND CONCLUSIONS
10.1.1
This Environmental Monitoring and Audit
(EM&A) report presents the EM&A works undertaken during the month from
10.1.2 A
total of 45 sets of measurements for
10.1.3 A
total of
10.1.4 A
total of
10.1.5 A
total of
10.1.6 A
total of
10.1.7 No
environmental related complaints were received during the reporting period.
10.1.8
No notifications of summons nor
prosecution were received for this Contract since the commencement of
construction.
10.1.9
The environmental monitoring results indicated
that the site activities undertaken by CHEC during the reporting period
complied with the relevant environmental requirements. Areas of Improvement / Site deficiencies were
identified by the ET and the IEC and the major issues identified on site were
related to the provision of covering for open stockpiles and maintenance of
temporary drainage system. Appropriate
immediate corrective measures have been implemented by CHEC in accordance with
the Deficiency and Action Reporting Procedures and they were found to be
acceptable.
10.2.1 According to the environmental audits undertaken during the reporting period, the following recommendations have been made:
10.2.2 Construction Dust
i. better watering coverage should be provided at haul road and exposed areas to ensure the soil surface is in moist conditions; and
ii. open stockpiles of dusty material and demolished debris should be covered properly by tarpaulin or spraying with water to keep surface moist.
10.2.3 Construction Noise
i. numbers / types of plant operating in the restricted hour should follow the condition of Construction Noise Permits;
ii. regular maintenance of machinery; and
iii. noisy equipment should be located away from nearby NSRs.
10.2.4 Water Quality
i. all construction wastewater and surface run-off should be diverted to appropriate water treatment facilities prior to discharge;
ii. de-silting facilities (sedimentation tanks/chemical treatment plants) should have adequate capacity for settling surface run-off;
iii. wheel washing facilities should be installed at all vehicular exits and used by all vehicles before leaving the construction site;
iv. surface run-off from the vehicular and plant servicing area should be diverted to the perimeter channels with petrol interceptor prior discharge to storm drainage system;
v. site hoarding / concrete barriers should be tightly sealed at the bottom to prevent seepage of surface run-off from the site;
vi. accumulation of water in drip trays and at chemical/fuel storage area should be avoided; and
vii. complete temporary drainage system on site in accordance with the approved Comprehensive Drainage Proposal.
10.2.5 Waste Management
i. oil / petrol contaminated soil should be collected and disposed of as chemical waste;
ii. all types of waste should be collected by licensed waste collectors; and
iii. good housekeeping should be implemented throughout the whole construction period.
10.2.6 Anti-mosquito breeding
i. pondings and uneven ground should be filled up and leveled;
ii. construction plants and other items which may retain water should be covered or treated in such a manner; and
iii.
all sedimentation
tanks, sump/soakaway pits and other receptacles which
may retain water should be sprayed with anti-mosquito repellent regularly.