Appendix
C - Implementation Schedule of Environmental Mitigation Measures (EMIS)
Air Quality – Schedule of Recommended Mitigation Measures
Impact |
Mitigation Measures |
Timing |
Implementation Status |
Air Quality during
construction |
Restricting
heights from which materials are dropped, as far as practicable to
minimize the fugitive dust arising from unloading/loading. |
During construction |
V |
All stockpiles of excavated materials or spoil of more than 50m3 shall be enclosed, covered or dampened during dry or windy conditions. |
V |
||
Effective water
sprays shall be used to control potential dust emission sources such as unpaved haul roads and active construction areas. |
V |
||
All spraying of materials and surfaces shall avoid excessive water
usage. |
V |
||
Vehicles that have the potential to create dust while transporting materials shall be
covered, with the cover properly
secured and extended over the edges of the
side and tail boards. |
V |
||
Materials shall be dampened, if necessary, before transportation. |
V |
||
Travelling speeds
shall be controlled to reduce traffic induced dust dispersion and re-suspension within the site from the
operating haul trucks. |
V |
||
Vehicle washing facilities shall be provided to minimize the quantity of material deposited on public roads. |
V |
Noise – Schedule of Recommended Mitigation Measures
Impact |
Mitigation Measures |
Timing |
Implementation Status |
Noise during
construction |
Only
well-maintained plant shall be operated on-site and plant shall be serviced
regularly during the construction works; |
During construction
phase |
V |
Machines and plant that may be in
intermittent use shall be shut down between work periods or shall be
throttled down to a minimum; |
V |
||
Plant known to emit noise strongly
in one direction, shall, where possible, be orientated to direct noise away
from nearby NSRs; |
V |
||
Mobile plant shall be sited as far away from NSRs as possible; |
V |
||
Material stockpiles and other
structures shall be effectively utilised, where practicable, to screen noise
from on-site construction activities; |
V |
||
Quieter Plant and Working Methods
shall be selected during planning the Construction Programme; |
V |
||
Temporary and movable noise barriers
shall be very effective in providing noise screening from a particular plant; |
V |
||
Number of Plant Operating On-site
Close to NSRs shall be reduced. |
V |
||
Various heights of temporary noise barriers
of as shown in Figures 2d and 2e – Layout of Noise Barriers of the
Environmental Permit |
Before
the construction phase |
V# |
|
Noise
during operation |
Various type of barriers of varying
heights as shown in Figures 4d, 4d(i), 4e and 4e(i) Layout of Noise Barriers
of the Environmental Permit |
Review
of required noise barrier layout during the design stage |
V* |
* Permanent noise barriers have been erected.
Water Quality – Schedule of Recommended Mitigation Measures
Impact |
Mitigation Measures |
Timing |
Implementation Status |
Water quality during construction |
All
wastewater generated on the Site shall be collected, removed from Site via a
suitable and properly designed temporary drainage system and disposed of at a
location and in a manner that will cause neither pollution nor nuisance. |
During construction |
V |
The
Contractor shall construct, maintain, remove and reinstate, as necessary,
temporary drainage works and take all other precautions necessary for the
avoidance of damage by flooding and silt washed down from the Works. He shall
also provide adequate precautions to ensure that no spoil or debris of any
kind is allowed to be pushed, washed down, fall or be deposited on land or on
the seabed adjacent to the site. |
V |
||
Around
any material storage, batching plants or other facilities where spillage may
occur, a bund with a capacity of 110% will be provided. |
V |
||
The
Contractor shall not permit any sewage, waste water or other effluent
containing sand, cement, silt or any other suspended or dissolved material to
flow from the Site onto any adjoining land or allow any solid waste to be deposited
anywhere within the Site or onto any adjoining land and shall have all such
materials removed from the Site. |
@ |
||
The
Contractor shall be responsible for temporary drainage, diverting or
conducting of open streams or drains intercepted by any works and for
reinstating these to their original courses on completion of the Works. |
V |
||
Any
proposed temporary diversions to stream courses or nullahs shall be submitted
to the Engineer for agreement one month prior to such diversion works being commenced.
Diversions shall be constructed to allow the water flow to discharge without
overflow, erosion or washout. The area through which the temporary diversion
runs is to be reinstated to its original condition when the temporary
diversion is no longer required. |
V |
||
The Contractor shall not discharge directly or indirectly (by runoff) or
cause or permit to be discharged into any public sewer, storm-water drain,
channel, stream-course or sea, any effluent or foul or contaminated water or
cooling water without the prior consent of the relevant Authority who may
require the Contractor to provide, operate and maintain at the Contractor's
own expense, within the premises or otherwise, suitable works for the
treatment and disposal of such effluent or foul or contaminated or cooling or
hot water. |
V |
||
If
any office, site canteen or toilet facilities is erected, foul water effluent
shall, subject to clause as stated in the last paragraph above, be directed
to a foul sewer or to a sewage treatment facilities either directly or
indirectly by means of pumping. |
V |
||
The Contractor shall at all times ensure that all existing stream
courses and drains within, and adjacent to the Site are kept safe and free
from any debris and any excavated materials arising from the Works. The
Contractor shall ensure that chemicals and concrete agitator washings are not
deposited in watercourses. |
V |
||
All
Contractor's Equipment shall be designed and maintained to minimise the risk
of silt and other contaminants being released into the water column or
deposited in other than designated locations |
V |
Waste – Schedule of Recommended Mitigation Measures
Impact |
Mitigation Measures |
Timing |
Implementation Status |
Waste
management during construction |
General Waste - Transport of wastes off
site as soon as possible. - Maintenance of accurate waste records. - Minimisation of waste generation for disposal (via reduction/recycling/re-use). - No on-site burning will be permitted. - Use of re-useable metal hoardings/signboards. |
During construction |
V |
Vegetation from
site clearance - Segregation of materials to facilitate disposal. - Mulching to reduce bulk and where possible
review opportunities for the possible beneficial use within landscaping
areas. |
V |
||
Demolition Wastes -
Segregation of
materials to
facilitate disposal. -
Appropriate stockpile management. |
V |
||
Excavated Materials -
Segregation
of materials to facilitate disposal / reuse. -
Appropriate
stockpile management. -
Re-use
of excavated material on or off site (where possible). -
Special
handling and disposal procedures in the event that contaminated materials are
excavated. |
V |
||
Construction Wastes - Segregation of materials to facilitate
recycling/reuse (within designated area in appropriate
containers/stockpiles). - Appropriate stockpile management. - Planning to reduce over ordering and waste
generation. - Recycling and re-use of materials where possible
(e.g. metal, wood from formwork) - For material which cannot be re-used/recycled,
collection should be carried out by an approved waste contractor for landfill
disposal. |
V |
||
Bentonite Slurries - Bentonite slurries should be reused as far as possible. - Disposal in accordance
with Practice Note
For Professional Persons ProPECC
PN 1/94. |
# |
||
Chemical Wastes - Storage within locked, covered and bunded area. - The
storage area shall not be located adjacent to sensitive receivers e.g. drains. - Minimise waste production and recycle oils/solvents
where possible. - A spill response procedure shall be in place and
absorption material available for minor spillages. - Use appropriate and labelled containers. - Educate site workers on site cleanliness/waste
management procedures. - If chemical wastes are to be generated, the
contractor must register with EPD as
a chemical waste producer. - The chemical wastes
shall be collected
by a licensed
chemical waste collector. |
V |
||
Municipal Wastes - Waste shall
be stored within
a temporary refuse
collection facility, in appropriate containers prior to collection
and disposal. - Regular, daily collections are required by an
approved waste collector. |
V |
Ecology – Schedule of Recommended Mitigation Measures
Impact |
Mitigation Measures |
Timing |
Implementation Status |
Ecology during
construction |
Accurate Delineation of Works Area - Boundaries of proposed works areas shall be clearly identified and separated from
external areas by a physical barrier to prevent encroachment of adjacent habitats. - Individual trees which fall within the works
areas but which work plans do not require removal are to be retained and
fenced off to maximize protection. |
During construction |
V |
Vegetation Clearance - No fires shall be lit within the works area for
the purpose of burning cleared vegetation. - The Contractor shall give consideration to mulching the cleared vegetation for recycling within the works area / adjacent land. |
V |
||
Dust generation There are a number of measures which shall be taken as specified in the Air Pollution Control (Construction Dust) Regulation on ‘Dust Control Requirements, including the following key measures to be applied during construction: - Vehicle washing facilities to be provided at every
discernible or designated vehicle exit point; - All temporary site access roads shall be sprayed
with water to suppress dust as necessary; - All dusty materials should be sprayed with water
immediately prior to any handling; and - All debris should be covered entirely by impervious
sheeting or stored in a sheltered debris collection area. |
V |
||
Surface Run-off In general, mitigation measures shall be in accordance with ProPECC PN1/94 on ‘Construction Site Drainage’. Key measures include: - Bund and cover stock piles to avoid run-off; - Channel any run-off through a system of oil,
grease and sediment / silt traps and reuse water on site where ever practical; - All vehicle maintenance to be undertaken within
a bunded area; and - Maximise vegetation retention on-site to maximise
absorption (minimise transport). |
V |
Landscape and Visual Impact – Schedule of Recommended Mitigation Measures
Impact |
Mitigation Measures |
Timing |
Responsibility |
|
Landscape &
Visual
during construction |
Preservation of
Existing Vegetation - Trees identified for retention within the
project limit would be protected during the works; - The tree transplanting and planting works shall
be implemented by approved Landscape
Contractors. |
During construction |
V |
|
Temporary Works Areas - Where feasible
the works areas would be screened using hoarding and existing vegetation would
be retained where possible to reduce the landscape and visual impacts arising
from the construction activity. The landscape of these works areas would be restored
following the completion of the construction phase. |
V |
|||
Hoarding - A hoarding would be erected where practicable in
the most visually sensitive locations to screen the temporary construction
works from the local VSRs. |
V |
|||
Top Soils - The works
will result in disturbance to extensive areas of topsoil. Topsoil worthy of
retention should be stockpiled for use following completion of the civil engineering
works. It should either be temporarily vegetated with hydroseeded grass or
turned over on a regular basis. |
||||
# |
||||
Protection of
Important Landscape Features - Important features such as temples, Island House
and kilns within the study area, although remote from the proposed works retained
and adequately protected. |
V |
Legend:
V = implemented;
x = not implemented;
@ = partially
implemented;
+ = recommended and
immediately implemented during the site inspection by the Contractor;
N/A = not applicable -
No such work was undertaken or no such material was used on site;
# = to be implemented.