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 |
· Careful sitting of
construction activities which generate substantial amount of dust can
effectively reduce the overall impact. |
During
construction |
V |
· Use of regular
watering, with complete coverage if possible, to reduce dust
emissions from exposed site surfaces and unpaved roads and for
dusty construction areas and areas close to ASRs, particularly
during dry weather. |
V |
||
· Open stockpiles
shall be avoided. Side enclosure and covering of any aggregate or dusty material
storage piles to reduce emissions.
Where possible, prevent placing dusty material storage piles near
ASRs. Where this is not practicable owing to frequent usage, watering shall
be applied to aggregate fines. |
V |
||
· No free falling
construction debris should be allowed; debris should be let down by hoist or
enclosed tunnel to the ground. |
N/A |
||
· All dusty materials
should be sprayed with water prior to any loading, unloading or transfer
operation so as to maintain the dusty materials wet. |
V |
||
· Provision of wind
shield and dust extraction units or similar dust mitigation measures at the
loading points, and use of water sprinklers at the loading area where dust
generation is likely during the loading process of loose material,
particularly in dry seasons/ periods. |
V |
||
· Height from which
dusty materials are dropped should be controlled to a minimum practical
height to limit fugitive dust generation from unloading. |
N/A |
||
· Tarpaulin covering
of all dusty vehicle loads transported to, from and between site locations. |
V |
||
· Skip hoist for
material transport should be totally enclosed by impervious sheeting. |
V |
||
· Establishment and
use of vehicle wheel and body washing facilities at the exit points of the
site and public roads, combined with cleaning of public roads wherever
necessary and practical. |
V |
||
· The area where
vehicle washing takes place and the section of the road between the washing
facilities and the exit point should be paved with concrete, bituminous
materials or hardcores. |
V |
||
· Provision of not
less than 2.4m high hoarding from ground level along site boundary where
adjoins a road, streets or other accessible to the public except for a site
entrance or exit. |
V |
||
· Imposition of speed
controls for vehicles on site haul roads. Where feasible, routing of vehicles
and positioning of construction plants should be at a maximum possible
distances from sensitive receivers. |
V |
||
· Every stock of more
than 20 bags of cement or dry pulverised fuel ash (PFA) should be covered
entirely by impervious sheeting or placed in an area sheltered on the top and
the 3 sides. |
N/A |
||
· Instigation of an
environmental monitoring and auditing program to monitor the construction
process in order to enforce controls and modify method of work if dusty
conditions arise. |
V |
Noise - Schedule of Recommended Mitigation Measures
Impact |
Mitigation Measures |
Timing |
Implementation Status |
Construction
Noise during Construction |
· In order to reduce
the excessive noise impacts at the affected NSRs during normal daytime
working hours, the following mitigation measures shall be implemented:- -
adopting quiet powered mechanical equipment; -
scheduling of works; -
erect a 3m tall moveable noise barriers along the site
boundary; and -
noise enclosure. |
During
construction |
V |
· Only
well-maintained plant should be operated on-site and plant should be serviced
regularly. |
V |
||
· Silencers or
mufflers on construction equipment should be utilized and should be properly
maintained. |
V |
||
· Mobile plant, if
any, should be sited as far away from NSRs as possible. |
V |
||
· Machines and plant
(such as trucks) that may be in intermittent use should be shut down between
works periods or should be throttled down to a minimum. |
V |
||
· Plant known to emit
noise strongly in one direction should, wherever possible, be orientated so
that the noise is directed away from the nearby NSRs. |
V |
||
· Material stockpiles
and other structures should be effectively utilised, wherever practicable, in
screening noise from on-site construction activities. |
V |
||
· Use of acoustic
barriers as close to the source as possible. Equipment to be shielded: air
compressor, water pump, concrete pump, dumper, dump truck, generator, various
hand tools, saw, excavator, loader, truck mixer, mobile crane, vibrator and
breaker. |
During
examination periods of the school nearby |
V |
Water Quality - Schedule of Recommended Mitigation
Measures
Impact |
Mitigation
Measures |
Timing |
Implementation
Status |
Water
Quality during Construction |
Construction
works at or close to the seafront |
||
· Temporary storage
of construction materials (e.g. equipment, filling materials, chemicals and
fuel), chemical waste storage area and temporary stockpile of construction
and demolition materials should be located well away from the seawater front
and storm drainage during carrying out of the works. |
During
construction |
V |
|
· Stockpiling of
construction and demolition materials and dusty materials should be covered
and located away from the seawater front and storm drainage. |
V |
||
· Construction debris
and spoil should be covered up and/or disposed of as soon as possible to
avoid being washed into the nearby receiving waters. |
V |
||
Construction run-off and Drainage |
|||
The site practices
outlined in ProPECC PN 1/94 “Construction Site Drainage” shall be followed as
far as practicable in order to minimise surface runoff and the chance of
erosion, and also to retain and reduce any suspended solids prior to
discharge. These practices include,
inter alia, the following items:- |
During construction |
V |
|
· Provision of
perimeter channels to intercept storm-runoff from outside the site. These
shall be constructed in advance of site formation works and earthworks. |
|
||
· Vehicle and plant
servicing areas, vehicle wash bays and lubrication bays should as far as
possible be located within roofed areas. The drainage in these covered areas
should be connected to foul sewers via a petrol interceptor and/or oil/grease
separator. Oil leakage or spillage should be contained and cleaned up
immediately. Waste oil should be collected and stored for recycling or
disposal in accordance with the Waste Disposal Ordinance. |
V |
||
· Sand/silt removal
facilities such as sand traps, silt traps and sediment basins shall be
provided to remove sand/silt particles from runoff to meet the requirements
of the Technical Memorandum standard under the Water Pollution Control
Ordinance. The design of silt removal facilities should be based on the
guidelines provided in ProPECC PN 1/94.
All drainage facilities and erosion and sediment control structures
should be inspected monthly, regularly cleaned and maintained to ensure
proper and efficient operation at all times and particularly during
rainstorms. |
V |
||
· Careful programming
of the works to minimise the potential of soil erosion during the rainy
season. Other measures that need to be
implemented before, during, and after rainstorms are summarized in ProPECC PN
1/94. |
V |
||
· Exposed soil
surface shall be protected by paving as soon as possible to reduce the
potential of soil erosion. |
V |
||
· Open stockpiles of
construction materials on site shall be covered with tarpaulin or similar
fabric during rainstorm. |
V |
||
General Construction Activities |
|||
· Debris and rubbish
generated on-site shall be collected, handled and disposed of properly to
avoid entering the nearby nullah and stormwater drains. Stockpiles of cement
and other construction material should be kept covered when not being used. |
During
construction |
V |
|
Water
Quality during Construction |
· Oils and fuels
should only be used and stored in designated areas which have pollution
prevention facilities. All fuel tanks
and storage areas shall be provided with locks and be sited on sealed areas,
within bunds of a capacity equal to 110% of the storage capacity of the
largest tank. The bund should be drained of rainwater after a rain event. |
V |
|
Sewage Effluent |
|||
· Temporary sanitary
facilities, such as portable chemical toilets, shall be employed on-site. A
licensed contractor would be responsible for appropriate disposal and
maintenance of these facilities. |
During
construction |
V |
|
· Effluent discharged
from the construction site should comply with the standards stipulated in the
TM-DSS. |
V |
||
· Subject to the sampling
results of Contamination Assessment Plan of the site, any contaminated land
treatments are subjected to EPD’s requirements on handling, treatment and
disposal. Should effluent stream
and/or extracted ground water be discharged from the site, the discharge
shall comply with the WPCO and any EPD special requirements. |
N/A |
||
· Establishment of
baseline and impact monitoring program to establish the baseline water
quality condition and monitor the construction process in order to enforce
controls and modify method of work if any adverse impacts on the water
sensitive receivers are detected. |
V |
Waste Management- Schedule of Recommended Mitigation
Measures
Impact |
Mitigation
Measures |
Timing |
Implementation
Status |
Waste
Management during Construction |
Good
Site Practice |
||
· Nominate an
approved personnel, such as a site manager, to be responsible for good site
practices and effective arrangements for collection and disposal to an
appropriate facility of all wastes generated at the works area. Training of site personnel in proper waste
management and handling procedures shall be undertaken. |
During
construction |
V |
|
· Construction
materials should be planned and stocked carefully to minimise and avoid
unnecessary generation of waste. |
V |
||
· General refuse
shall be stored and collected separately from other construction and chemical
wastes. Provide on-site refuse
collection facilities and enclosed transfer facility for storage and
containment. |
V |
||
· Waste points should
be provided sufficiently and waste should be collected regularly. |
V |
||
· Appropriate
measures to minimise windblown litter and dust during transportation of waste
by either covering trucks or by transporting wastes in enclosed containers. |
V |
||
· Separate chemical
wastes for special handling and appropriate treatment at the Chemical Waste
Treatment Centre located at Tsing Yi.
Chemical waste shall be handled according to the Code of Practice on
the Packaging, Labelling and Storage of Chemical Wastes. |
V |
||
Waste
Management during Construction |
· Regular cleaning
and maintenance programme for drainage systems, sumps and oil interceptors. |
During
construction |
V |
· Develop procedures
such as a trip-ticket system to monitor the disposal of C&D material and
solid wastes at public filling areas and landfills, and to control
fly-tipping. |
V |
||
· A recording system
for the amount of wastes generated, recycled and disposed should be proposed. |
V |
||
Waste Reduction Measures |
|||
Good
management and control can prevent the generation of a significant amount of
waste. Waste reduction is best
achieved at the planning and design stage, as well as by ensuring the
implementation of good site practices.
Recommendations to achieve waste reduction include:- |
During
construction |
|
|
· Segregation and
storage of different types of waste in different containers, skips or
stockpiles to enhance reuse or recycling of materials and their proper
disposal. |
V |
||
· Encourage
collection of aluminum cans, PET bottles and paper by providing separate
labelled bins to enable these wastes to be segregated from other general
refuse generated by the work force. |
V |
||
· Any unused
chemicals or those with remaining functional capacity shall be recycled. |
V |
||
· Use of reusable
non-timber formwork to reduce the amount of C&D material. |
V |
||
· Prior to disposal
of C&D waste, it is recommended that wood, steel and other metals shall
be separated for re-use and / or recycling to minimise the quantity of waste
to be disposed of to landfill. |
V |
||
· Proper storage and
site practices to minimise the potential for damage or contamination of
construction materials. |
V |
||
· Plan and stock
construction materials carefully to minimise amount of waste generated and
avoid unnecessary generation of waste. |
V |
||
General Site Wastes |
|||
· Collection area for
construction site waste should be provided where waste can be stored prior to
removal from site. |
During
construction |
V |
|
· An enclosed and covered
area for the collection of the waste is recommended to reduce ‘wind blow’ of
light material. |
V |
||
· An open area used
for storage or loading/unloading of wastes should be bunded and all the
polluted surface run-off collected within this area should be diverted into
sewers. |
V |
||
· General refuse
should be stored in enclosed bins or compaction units separate from C&D
material. A reputable waste collector
should be employed by the contractor to remove general refuse from the site,
separately from C&D material. |
V |
||
Workforce Wastes |
|||
· Suitable collection
sites around site offices and canteen should be required. |
During
construction |
V |
|
· Waste should be
removed daily or as often as required. |
V |
||
Waste Management during Construction |
Chemical Waste |
||
· After use, chemical
waste (for example, cleaning fluids, solvents, lubrication oil and fuel) should
be handled according to the Code of Practice on the Package, Labelling and
Storage of Chemical Wastes. |
During
construction |
V |
|
· Waste should be
properly stored on site within suitably designed containers and should be
collected by approved licensed waste collectors for disposal at the Chemical
Waste Treatment Centre (CWTC) or other licensed facility in accordance with
the Waste Disposal Chemical Waste (General) Regulation. |
|
||
· Any service shop
and minor maintenance facilities should be located on hard standing within a
bunded area, and sumps and oil interceptors should be provided. |
During
construction |
N/A |
|
· Provision of
appropriate on-site temporary storage facility for any asbestos containing
materials (ACM) where necessary.
Storage facilities shall be designed in accordance with the Code of
Practice on the Packaging, Labelling and Storage of Chemical Wastes. |
V |
||
· Employ registered
contractors for removal of ACM off-site and disposal at a designated landfill
site. |
V |
||
Construction and Demolition Material |
|||
· The selective
demolition method is recommended to be employed to minimize the effort of
sorting mixed C&D materials. |
During
construction |
V |
|
· In order to
minimise the impact resulting from collection and transportation of C&D
material for off-site disposal, it is recommended that the public fill
material generated from demolition works shall be re-used on-site as far as
possible. |
V |
||
· A suitable area
should be designated to facilitate the sorting process and a temporary stockpiling
area will be required for the separated materials. Separate construction and
demolition material into C&D waste (non-inert material) and public fill
(inert material) for appropriate disposal.
Public fill disposed at a public filling area shall only consist of
earth, building debris, broken rock and concrete. The material shall be free from marine mud,
household refuse, plastic, metals, industrial and chemical waste, animal and
vegetable matter, and other material considered to be unsuitable by the
Filling Supervisor. Small quantities
of timber mixed with otherwise suitable material would be permitted. C&D waste, such as wood, glass,
plastic, steel and other metals, shall be reused or recycled and, as a last
resort, disposed to landfill. |
V |
Land Contamination -
Schedule of Recommended Mitigation Measures
Impact |
Mitigation
Measures |
Timing |
Implementation
Status |
Land Contamination (For inaccessible lots and lots which the
Permit Holder opt to re-assess in accordance with the Risk-Based Remediation
Goals (RBRGs) approach) |
· Further land
contamination assessments to be carried out for inaccessible lots, lots which
the Permit Holder opt to re-assess in accordance with the RBRGs approach, as
well as areas that required further sampling to ascertain contamination
extent. Supplementary CAP, CAR and RAPs to be submitted to EPD for
endorsement before commencement of remediation work. These reports shall
detail the further sampling & remediation works required. The development
construction work shall only commence after all the remediation work has been
completed. |
Inaccessible lots as described under para. 3.5 of
Appendix 7A of YTB-EIA
as well as areas that required further sampling to ascertain contamination
extent/ Upon availability of site access Supplementary CAP, CAR and
RAPs to be submitted to EPD for endorsement before commencement of the
remediation work. Development construction
work should only commence after all the remediation work has been completed. |
V (Two CAPs
(Yau Tong Bay - Decommissioning of Shipyard Sites Supplementary
CAP for Previous Inaccessible Lots (YTML 27, 44, 45-46, 54 and Underground
Oil Tank at YTML 6-11) & Yau Tong Bay - Decommissioning of Shipyard Sites
(CAP for YTML 1, 6-11, 15, 28, 29, 38 and 41-43)) have been submitted to EPD
and approved on 6 Jul 2011 and 30 Aug 2011 respectively. The
corresponding CARs and RAPs were submitted to EPD in June 2012 and were
subsequently approved in June 2013 after two rounds of comment.) |
Land Contamination (For inaccessible lots
and lots which the Permit Holder opt to re-assess in accordance with
the Risk-Based Remediation Goals (RBRGs) approach) |
· A method statement
detailing the following shall be submitted to EPD for endorsement:- -
Methodology, monitoring and verification procedures for
biopiling and solidification; -
Pilot test procedures for solidification process to
ascertain the concrete mix receipe and leachability of the product; -
The sample size for the verification soil test to be
conducted by IEA for spot check purpose; -
The notification system for notifying the Director the
satisfactory completion of the excavation and treatment of contaminated soil;
and -
Provision and operation requirements of equipment and
personnel decontamination facilities. |
All areas identified to require solidification of soil
as land remediation / The pilot test results and method statement shall be
submitted and endorsed at least one month prior to the full scale
solidification works. All soil identified and to be identified as
contaminated with TPH / The method statement shall be submitted and endorsed
at least one month prior to the commencement of the biopiling works. |
V (A
method statement for biopiling and solidification has been submitted to EPD
on 2 Oct 2013. The method statement is endorsed by EPD on 20 Dec 2013.) |
Land Contamination (For inaccessible lots
and lots which the Permit Holder opt to re-assess in accordance with
the Risk-Based Remediation Goals (RBRGs) approach) |
· A Soil Remediation
Report should be submitted to EPD to demonstrate that the remediation work
has been properly carried out. |
All areas identified to require soil and groundwater
remediation / The Remediation Report shall be submitted and endorsed prior to
the commencement of the development construction works. |
N/A |
· Inspections for
dioxin. Should there be signs of
incineration facilities, burn pits or facilities that utilises high
temperature burning, soil sampling for dioxin will be carried out. Details regarding such sampling shall be
approved by EPD. A detailed proposal
for dealing with dioxin contaminated material, if found, shall also be
submitted to EPD for approval. |
All the Yau Tong Bay marine lots inspection and testing
shall commence upon availability of site. |
V |
|
Land Contamination (For lots and facilities
assessed under EIA with approved CAP, CAR and RAP based on Dutch B levels
referenced to ProPECC PN3/94 – Contaminated Land Assessment and Remediation) |
· A pilot test shall
be conducted to ascertain the concrete mix receipe and leachability of the
product prior to a full scale solidification and a method statement detailing
the solidification procedure (including the sampling proposal for process
monitoring) shall be submitted to EPD for endorsement. |
All areas identified to require
solidification of soil as land remediation / The pilot test results and
method statement shall be submitted and endorsed prior to the full scale
solidification works. |
V (A
pilot test to ascertain the concrete mix recipe was conducted on 30 Dec 2013.
The method statement for solidification has been submitted to EPD on 2 Oct
2013 and subsequently endorsed by EPD on 20 Dec 2013.) |
Land Contamination (For lots and facilities
assessed under EIA with approved CAP, CAR and RAP based on Dutch B levels
referenced to ProPECC PN3/94 – Contaminated Land Assessment and Remediation) |
· A method statement
detailing the biopiling methodology, monitoring and verification procedures
shall be submitted to EPD for endorsement. |
All soil identified and to be identified as
contaminated with TPH / The method statement shall be submitted and endorsed
prior to the commencement of the biopiling works. |
V (The
method statement for biopiling has been submitted to EPD on 2 Oct 2013 and
subsequently endorsed by EPD on 20 Dec 2013.) |
· A Soil Remediation
Report should be submitted to EPD to demonstrate that the remediation work
has been properly carried out. |
All areas identified to require soil and groundwater
remediation / The Remediation Report shall be submitted and endorsed prior to
the commencement of the development construction works. |
N/A |
Landscape and Visual Impact - Schedule of Recommended
Mitigation Measures
Impact |
Mitigation Measures |
Timing |
Implementation Status |
Landscape
and Visual Impact during Construction |
· On-site mature
trees within the Project boundary shall be retained. Any mature tree shall
not be transplanted or fell unless permission has been given by the EPD. |
During
construction |
|
· During the
biopiling process, the biopiles shall be limited to a height of less than 3m. |
|
||
· Erection and
maintenance of decorative screen/colour hoarding around the site. |
V |
Legend: V = implemented;
X = not implemented;
@
= partially implemented;
N/A = not applicable - No
such work was undertaken or no such material was used on site.