Appendix C - Implementation Schedule of Environmental
Mitigation Measures (EMIS)
Air Quality - Schedule of
Recommended Mitigation Measures
Impact |
Mitigation
Measures |
Timing |
Implementation
Status |
|||||||||||
Nov
19 |
Dec
19 |
Jan
20 |
Feb
20 |
Mar
20 |
Apr
20 |
May
20 |
Jun
20 |
Jul
20 |
Aug
20 |
Sep
20 |
Oct
20 |
|||
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
@ |
@ |
@ |
@ |
@ |
@ |
V |
||
All spraying of
materials and surfaces shall avoid excessive water
usage. |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
||
Materials shall be
dampened, if necessary, before transportation. |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
||
Travelling speeds shall be controlled to reduce traffic induced dust dispersion and re-suspension within the site from the
operating haul trucks. |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
||
Vehicle washing facilities shall be provided to minimize the quantity of material
deposited on public roads. |
V |
V |
V |
V |
V |
V |
V |
V |
@ |
@ |
V |
V |
Noise - Schedule of Recommended Mitigation Measures
Impact |
Mitigation
Measures |
Timing |
Implementation
Status |
|||||||||||
Nov
19 |
Dec
19 |
Jan
20 |
Feb
20 |
Mar
20 |
Apr
20 |
May
20 |
Jun
20 |
Jul
20 |
Aug
20 |
Sep
20 |
Oct
20 |
|||
Noise during Construction |
Use of silenced plant or plant equipped with mufflers or dampers in substitute of ordinary plant. |
During construction |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
Reduce the number of equipment and their percentage on-time. |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
||
3.5 m and 5.5
m high temporary noise barrier at culvert construction work area
(Figure 2a of
the Environmental Permit). |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
||
3 m high temporary noise barrier along the northern edge of Bridge 12 at ground level (Figure 2b of the Environmental Permit). |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
||
2 m high temporary noise barrier along the northern edge of Bridge 12 at bridge level (Figure 2b of the Environmental Permit). |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
||
2.5 m high temporary noise barrier along Tai Wo Service Road
West (Figure 2c of
the Environmental Permit). |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
||
3.5m and 7m high temporary noise barrier along Tai Wo Services Road
West near Tai Hang (Figure 2c of the
Environmental Permit). |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
||
7 m high temporary noise barrier along Tai Wo Service Road West near Tai Wo Footbridge work area (Figure 2d of the Environmental Permit). |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
||
7 m high temporary noise barrier near Kiu Tau Footbridge work area (Figure 2d of the
Environmental Permit). |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
||
2.5 m high temporary noise barrier near
river diversion work area (Figure 2e
of the Environmental Permit). |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
V* |
||
Noise during Operation |
Various
type of barriers of varying heights as shown in Figures 4a to 4e – Layout of
Noise Barriers of the Environmental Permit |
Review
of required noise barrier layout during the design stage |
@ |
V |
V |
V |
V* |
V* |
V |
V* |
V* |
V* |
V* |
V* |
Water Quality - Schedule of Recommended Mitigation Measures
Impact |
Mitigation
Measures |
Timing |
Implementation
Status |
|||||||||||
Nov
19 |
Dec
19 |
Jan
20 |
Feb
20 |
Mar
20 |
Apr
20 |
May
20 |
Jun
20 |
Jul
20 |
Aug
20 |
Sep
20 |
Oct
20 |
|||
Water quality during Construction |
Demolition and reconstruction of bridges -
Prevent off-site migration through use of sheet piles. -
Minimise duration of works as far as practical. -
All sewer and drainage connections should be sealed to prevent debris, soil,
sand, etc, from entering public sewers/drains. -
Site
surface
runoff
should
be
settled
to
remove sand/silt
before
it is
discharged into the existing storm drains. |
During construction |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
Road Widening Works, Earthworks and Culvert Extension Works -
Wastewater generated from any concrete batching washdown of equipment or similar activities should be discharged
into foul sewers, after the removal of
settable solids, and pH adjustment as necessary. All sewage discharges
from the
study area
should meet the TM standards and approval from EPD through the
licensing process is
required. -
Sand traps, oil interceptors and other pollution prevention installations should be
provided, properly cleaned and maintained. -
Runoff
from
exposed working areas, unfinished slopes
and
from
unlined temporary channels should be directed to
stilling basins and/or silt traps before discharging to the
drainage outfalls. -
Regular inspections of stilling basins and/or silt
traps is required to
ensure that sediment is
not conveyed into the existing drainage system. -
Open stockpiles should be covered with a tarpaulin cover. -
During the wet season, any exposed top soils should be covered with a
tarpaulin, shotcreted or hydroseeded. -
Sand and silt from wash-water
from vehicle washing should be settled out before discharging into storm drains. -
Fuels should be stored in bunded areas such that spillage can be easily collected. |
V |
V |
V |
V |
@ |
@ |
V |
V |
V |
V |
V |
V |
Waste - Schedule of Recommended Mitigation Measures
Impact |
Mitigation
Measures |
Timing |
Implementation
Status |
|||||||||||
Nov
19 |
Dec
19 |
Jan
20 |
Feb
20 |
Mar
20 |
Apr
20 |
May
20 |
Jun
20 |
Jul
20 |
Aug
20 |
Sep
20 |
Oct
20 |
|||
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 |
@ |
V |
V |
V |
V |
V |
V |
V |
@ |
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
||
Demolition Wastes -
Segregation of materials to
facilitate disposal. -
Appropriate stockpile management. |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
@ |
@ |
V |
V |
@ |
@ |
V |
V |
@ |
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 |
V |
V |
V |
@ |
V |
V |
V |
V |
V |
Ecology - Schedule of Recommended Mitigation Measures
Impact |
Mitigation
Measures |
Timing |
Implementation
Status |
|||||||||||
Nov
19 |
Dec
19 |
Jan
20 |
Feb
20 |
Mar
20 |
Apr
20 |
May
20 |
Jun
20 |
Jul
20 |
Aug
20 |
Sep
20 |
Oct
20 |
|||
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. |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
Landscape and Visual Impact - Schedule of Recommended Mitigation
Measures
Impact |
Mitigation
Measures |
Timing |
Implementation
Status |
|||||||||||
Nov
19 |
Dec
19 |
Jan
20 |
Feb
20 |
Mar
20 |
Apr
20 |
May
20 |
Jun
20 |
Jul
20 |
Aug
20 |
Sep
20 |
Oct
20 |
|||
Landscape and 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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
V |
V |
V |
V |
V |
V |
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 |
V |
V |
V |
V |
V |
V |
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.