Table 15.1            Project Implementation Schedule

 

EIA Ref.

EM&A Ref.

Recommended Mitigation Measures

Objectives of the Recommended Measure & Main Concern to Address

Who to implement the measure?

Location of the measure

When to implement the measure?

What requirements or standards for the measure to achieve?

A

 

Noise Impact

 

 

 

 

 

S 3.124

S 2.26

Good Site Practice:

§    Only well-maintained plant should be operated on-site and plant should be serviced regularly during the construction program

§    Silencers or mufflers on construction equipment should be utilized and should be properly maintained during the construction program

§    Mobile plant, if any, should be sited as far from NSRs as possible

§    Machines and plant (such as trucks) that may be in intermittent use should be shut down between work periods or should be throttled down to a minimum

§    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

§    Material stockpiles and other structures should be effectively utilised, wherever practicable, in screening noise from on-site construction activities.

To reduce construction noise impact

Contractor

Works area

Construction phase

EIAO-TM

NCO

S 3.125

S 2.27

Use of quieter plant  for the following tasks:

(a)     Funicular Railway

-          Site Clearance, Tunnel Excavation, Tunnel Portal Construction, Piling for Station and Station Construction

(b)     Entry Plaza

-          Site Clearance, Demolition, Ground Contamination Clean Up,  Realignment of Ocean Park Road, Drainage Diversion, Sewerage Diversion, Site Formation & Excavation, Piling Works and Superstructure Construction

(c)     Aqua City

-          Site Clearance, Demolition, Slopeworks, Site Formation & Excavation, Piling Works and Superstructure Construction

(d)     Whisker’s Harbour

-          Site Clearance, Demolition, Site Formation, Piling Works and Superstructure Construction

(e)     Back of House - Waterfront

-          Site Clearance, Demolition, Site Formation and Superstructure Construction

To reduce construction noise impacts

Contractor

Works area

Construction phase

EIAO-TM

NCO

S 3.126-S 3.128

S2.28-2.29

Use of movable noise barrier  for the following tasks:

(a)     Funicular Railway

-          Site clearance, tunnel excavation, tunnel portal construction, piling for station and station construction

(b)     Entry Plaza

-          Site clearance, demolition, ground contamination clean up,  realignment of Ocean Park Road, drainage diversion, sewerage diversion, site formation & excavation, piling works and superstructure construction

(c)     Aqua City

-          Site clearance, demolition, slopeworks, site formation & excavation, piling works and superstructure construction

(d)     Whisker’s Harbour

-          Site clearance, demolition, site formation, piling works and superstructure construction

(e)     Back of House - Waterfront

-     Site clearance, demolition, site formation and superstructure construction

To reduce construction noise impacts

Contractor

Works area

Construction phase

EIAO-TM

NCO

S 3.131-3.132

S2.30

Construction works to be undertaken close to the school NSRs should be rescheduled during the examination period.

The following construction activities should be avoided during examination period:

(a)     Entry Plaza

-          Demolition, realignment of Ocean Park Road, drainage diversion, sewerage diversion, site formation & excavation, piling works and superstructure construction

(b)     Aqua City

-  Demolition, slopeworks, piling works and superstructure construction

To reduce construction noise impacts

Contractor

Works area

Construction phase

EIAO-TM

NCO

S 3.134

S2.31

To minimise noise nuisance from blasting, the following mitigation measures should be implemented:

Ÿ         The Contractor shall establish a communication channel with the nearest NSRs to liaise on the blasting schedule and inform them of any scheduled blasting in advance.

Ÿ         Sufficient time shall be allowed for alerting all the potential sensitive receivers through established channel of communication prior to blasting.

Ÿ         Proper procedures shall be put in place to alert and minimise any startling effect on the staff working in Ocean Park.

To minimise noise nuisance from blasting

Contractor

-

Construction phase

-

S 3.136

S2.32

The following shall be considered as far as possible in the detailed design of fixed plant:

(a)     Choose quieter plant such as those which have been effectively silenced. 

(b)     Include noise levels specification when ordering new plant (including rides, E/M equipment and PA system).

(c)     Locate fixed plant away from any NSRs as far as practicable.

(d)     Locate fixed plant in plant rooms with thick walls or specially designed enclosure

(e)     Locate noisy machines in basement or a completely separate building

(f)       Develop and implement a regularly scheduled plant maintenance programme in order to maintain controlled level of noise.

To reduce fixed plant noise impact

Ocean Park

Whole Site

Design and operation phases

EIAO-TM

NCO

S 3.138

S2.34

The following factors shall be taken into account in the detailed design of the loudspeaker system as far as possible:

(a)     The system should comprise a cluster of small power loudspeaker instead of a few large-power loudspeakers.

(b)     The speakers should be distributed throughout the spectator area rather than being clustered at one end of the stage or directly pointing to NSRs, and should be placed closer to audience.

(c)     Directional speakers should be used and oriented to point towards the audience and away from the nearby NSRs. 

(d)     The system so provided should comply with relevant statutory noise criteria and at the same time the entire system will provide sufficient direct sound when considering the intelligibility of a sound system.

(e)     Upon completion of system installation, sound tests to be witnessed by independent qualified professionals of IEC shall be conducted to demonstrate the loudspeaker system will satisfy the acoustic design requirements mentioned above.

 

To reduce entertainment noise impacts

Ocean Park

Whole Site

Design and operation phases

EIAO-TM

NCO

S 3.141

S2.37

Implement the following good management practices during rehearsals and shows:

 

(a)    Conduct noise monitoring during rehearsals and shows

(b)    Set up a complaint hotline

(c)    Distribute advance notice to nearby NSRs

To reduce entertainment noise impacts

Ocean Park

Whole Site

Design and operation phases

EIAO-TM

NCO

S 3.140

S2.36

Conduct a review study of fixed noise source impact based on detailed design available in later stage.  The study should include a review of audio levels required for meeting both the operational need for the lagoon night show and statutory noise control requirements.

To ensure fixed noise source impact would be acceptable

Ocean Park

-

Detailed design stage

EIAO-TM

NCO

S 3.142

S2.38

As a fall back option, should non-compliance of EIAO-TM noise limit at NSRs be identified for the lagoon night show, interim measures such as turning down/off music volume would be implemented before long-term measures such as redesigning show with no music/lower music volume are in place.

To ensure fixed noise source impact would be acceptable

Ocean Park

-

Operation phase

EIAO-TM

NCO

B

 

Landscape and Visual Impacts

 

 

 

 

 

Table 4.8

S3.9

Due consideration on existing surrounding vegetation during construction:

(a)     set up temporary tree nurseries

(b)     designate ‘no-intrusion zones’

(c)     hill fire prevention

(d)     dust and erosion control for exposed soil

(e)     well planned irrigation networks through Establishment Period

(f)       quarterly report on existing trees to be retained or transplanted, with photographic record

 

To minimize landscape impact

 Ocean Park

Whole Site

Construction Phase

EIAO-TM

Table 4.8

S3.10

Appearance and view considerations:

(a)     careful choice between ‘impermeable’ and ‘permeable’ hoardings
(b)     control over the appearance of construction workers, construction plants/ machines
(c)     proper screening and careful alignment of the temporary barging point and conveyor system
(d)     careful selection of security floodlights to avoid light pollution

To minimize visual impact

Ocean Park

Whole Site

Construction Phase

EIAO-TM

Table 4.8

S3.12

Inspection/ supervision by qualified resident site staff.

To minimize landscape and visual impacts

Ocean Park

Whole Site

Construction Phase

EIAO-TM

Table 4.8

S3.13

Ensure provision of compensatory planting at a min 1:1 ratio.
 
For those proposed trees felling / compensation / transplantation outside OP’s lot boundary, the details of proposal should be subject to Lands Department’s approval on tree felling application at the detailed design stage.

To minimize landscape and visual impacts

Ocean Park

Whole Site

Operation Phase

EIAO-TM

ETWBC 14/2002

Table 4.8

S3.15

1-year establishment period to ensure high quality and good maintenance of soft landscape works.

To minimize landscape impact

Contractor

Whole Site

Operation Phase

EIAO-TM

Table 4.8

S3.14

Minimize disturbance to existing roadside trees outside the new Park boundary.
 
 

To minimize landscape and visual impact

Ocean Park and  Highways Department / Leisure and Cultural Services Department

Whole Site

Operation Phase

EIAO-TM

Table 4.8

S3.7

Good soft landscape design:

(a)     provision of large-size plants to ensure ‘instant’ greening effect once operation commences
(b)     maximum use of native woodland mix species wherever thematic planting not required
(c)     use of hardy plants in consideration for the sun, altitude, wind direction, proximity to sea and microclimate factors
(d)     incorporate existing vegetation to the permanent design
(e)     provision of sufficient soil depth for on-structure planting
(f)       use of fast-growing tree species to counterbalance landform change visually
(g)     Appearance and greening for non-thematic elements to attain a visual balance for the overall site.
 

To minimize landscape and visual impacts

Ocean Park

Whole Site

Design Phase

EIAO-TM

Table 4.8

S3.8

Good hard landscape/ architectural design:

(a)     consideration of adjacent neighbor for common boundary fence wall

(b)     consideration of design input for the retaining wall

(c)     lighting design supported by carefully calculated photometric distribution to reduce light pollution
(d)     selection of correct lights to match functional and thematic intention

(e)     avoidance of glare of large building forms and outdoor hard paved areas

To minimize visual impact

Ocean Park

Whole Site

Design Phase

EIAO-TM

Table 4.8

S 4.56

3.9

A competent person, trained in theory and practice of outdoor lighting and illumination requirements and lighting systems will be employed to design the overall lighting strategy to avoid night-time glare

To ensure there will be no unacceptable night-time glare impact.

Ocean Park

Whole site

Design phase

EIAO-TM

C

 

Ecological Impact

 

 

 

 

 

S 5.133

S4.7

The design of conveyor belt system and the location of tunnel has been considered to avoid impact to potential nest sites in the tall shrubland habitat at Tai Shue Wan Area where possible.

To avoid impact to impact potential nest sites in the tall shrubland habitat at Tai Shue Wan

Ocean Park

Potential nest sites in the tall shrubland habitat at Tai Shue Wan

Design Phase

 

S 5.133

S4.7

The site clearance works before excavation in the Headland Area shall commence before the breeding season of Black Kite (from October to May) and there shall not be any direct impact on nesting activities.

To avoid impact to any nesting Black Kite in the excavation site

Contractor

Tall Shrubland in the excavation site of the Headland Area

Construction Phase

 

S 5.134

S4.7

Existing man-made freshwater ponds, one located in Tai Shue Wan and another one in Lowland Area would be preserved to avoid disturbance of the roosting site of birds such as Black crowned Pond Heron.

To avoid disturbance of the roosting site of birds

Ocean Park

Existing man-made freshwater ponds, one located in Tai Shue Wan and another one in Lowland Area

Design Phase

 

S 5.135

S4.7

The design of construction works have been considered to minimise impacts to the more valuable areas such as the existing shrubland habitat.

The proposed funicular train at the Headland area would be in tunnel to minimise impacts to natural terrain.

To minimize impacts to the more valuable areas

Ocean Park

Whole site

Design Phase

 

S 5.136

S 4.7, S4.10

All excavation works carried out close to water bodies shall be carefully controlled to avoid runoff entering watercourses, especially during periods of heavy rain. 

Site runoff shall be directed towards regularly cleaned and maintained silt traps and where appropriate, oil/grease separators to minimise risk of sedimentation and pollution. 

Suitable size / capacity silt traps and oil/grease interceptors shall be used.

Coral monitoring shall be implemented

 

To minimise sedimentation/ water quality impacts in order to minimise disturbance to  freshwater habitats and marine ecological sensitive receivers (coral communities)

 

Contractor

Whole site

Construction Phase

ProPECC Note PN 1/94

S 5.137

S 4.7

Noise mitigation measures including the use of quiet excavation methods, quiet construction plant and temporary noise barriers shall be implemented.

To minimise disturbance to habitats adjacent to the works areas.

 

Contractor

Whole site

Construction Phase

 

S 5.138

S 4.7

Vegetation survey and subsequent transplantation of locally uncommon or restricted species (i.e. Long Tentacle Orchid, Sword-leaved Orchid, Green-flowered Rattlesnake-Plantain, Cycad-fern Balloon Flower and Chinese Lily) shall be carried out to determine the feasibility and suitability of individual plants for transplantation.

Receptor sites shall be identified.

Transplantation shall be supervised by a suitably qualified botanist/ horticulturist.

A detailed transplantation methodology shall be formulated during the detailed design stage based on the information collected during the detailed vegetation survey.

To protect plant species of conservation interest

 

Contractor and qualified botanist/ horticulturist/ ecologist

 

Tall and low shrubland habitat affected by proposed works

Construction Phase

 

S 5.139

S4.7

Equipment or stockpile shall only be in designated works areas wherever practicable.

Access routes shall be selected as far as practicable on existing disturbed land.

To minimise disturbance to habitats.

Contractor

Whole site

Construction Phase

 

S 5.139

S 4.7

Construction activities shall be restricted to designated works areas.

To minimise disturbance to natural habitats outside works area.

Contractor

Whole site

Construction Phase

 

S 5.139

S 4.7

The works areas shall be reinstated immediately after completion of works.

To minimise disturbance to habitats.

Contractor

Whole site

Construction Phase

 

S 5.139

S 4.7

Waste skips shall be provided to collect general refuse and construction wastes.

The wastes shall be disposed of timely and properly off-site.

To minimise disturbance to habitats.

Contractor

Whole site

Construction Phase

 

S5.139

S4.7

Drainage arrangements shall include sediment traps to collect and control construction run-off

 

To minimise disturbance to habitats.

Contractor

Whole site

Construction Phase

 

S 5.139

S4.7

Open burning on works sites is illegal, and shall be strictly enforced.

To prevent accidental hill-fires.

Contractor

Whole site

Construction Phase

 

S 5.139

S4.7

Landscaping works on newly formed land will as far as possible make use of native plant species.

To enhance ecological value of landscaped areas.

Contractor

Whole site

Construction Phase

 

S 5.140

S4.7

Trees located within the works areas shall be preserved as far as practicable. 

A tree survey shall be conducted to identify any mature trees affected by the proposed works. If tree felling is unavoidable, feasibility of tree transplantation shall be explored and compensatory planting shall be provided on at least a 1:1 ratio.

To protect plant species of conservation interest

 

Contractor and qualified botanist/ horticulturist

 

Whole site

Construction Phase

 

S 5.141

S4.7

The loss of 4.8ha tall shrubland habitat will be compensated by planting native tall shrubs to enhance the ecological value of an existing low shrubland area with relatively low species diversity located to the north of Nam Long Shan Road close to the affected area.  The identified area for compensation is approximately 6ha as shown in Figure 5.4.

 

To mitigate loss of tall shrubland habitat

Contractor and qualified botanist/ horticulturist

 

Whole site

Construction Phase or Pre-construction Phase

 

D

 

Waste Management Implications

 

 

 

 

 

S6.31

S5.4

Good site practices:

§     Nomination of an approved person, such as a site manager, to be responsible for good site practices, arrangements for collection and effective disposal to an appropriate facility, of all wastes generated at the site

§     Training of site personnel in proper waste management and chemical handling procedures

§     Provision of sufficient waste disposal points and regular collection of waste

§     Appropriate measures to minimise windblown litter and dust during transportation of waste by either covering trucks or by transporting wastes in enclosed containers

§     Regular cleaning and maintenance programme for drainage systems, sumps and oil interceptors.

To reduce waste management impacts

Contractor

Works area

Construction phase

 

S6.32

S5.5

Waste reduction measures:

§     Sort C&D waste from demolition and decommissioning of the existing facilities to recover recyclable portions such as metals

§     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

§     Encourage collection of aluminium cans by providing separate labelled bins to enable this waste to be segregated from other general refuse generated by the work force

§     Proper storage and site practices to minimise the potential for damage or contamination of construction materials

§     Plan and stock construction materials carefully to minimise amount of waste generated and avoid unnecessary generation of waste.

 

To achieve waste reduction

Contractor

Works area

Construction phase

 

S6.34 -S6.35

S5.7-5.8

General refuse:

§     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.  Preferably an enclosed and covered area should be provided to reduce the occurrence of 'wind blown' light material. 

§     In order to minimise impacts resulting from collection and transportation of C&D material for off-site disposal, the excavated materials arising from site formation and tunnel construction should be reused on-site as backfilling material and for landscaping works as far as practicable.  In addition, volcanic rock generated from the tunnelling works should be subject to beneficial re-use. Other mitigation requirements are listed below:

o    A Waste Management Plan should be prepared

o    A recording system for the amount of wastes generated, recycled and disposed (including the disposal sites) should be used.

o    In order to monitor the disposal of C&D and solid wastes at public filling facilities and landfills, and to control fly-tipping, a trip-ticket system (e.g. ETWB TCW No. 31/2004) should be included.

To minimize environmental impacts during the handling, transportation and disposal of general refuse

Contractor

Works area

Construction phase

ETWB TCW No.19/2005

ETWB TCW No.31/2004

 

 

 

 

 

 

 

 

 

 

ETWBTC(W) No.19/2005.

S6.36

S5.9

Chemical waste:

Contractor would be required to register with the EPD as a chemical waste producer and to follow the guidelines stated in the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes.  

Good quality containers compatible with the chemical wastes should be used, and incompatible chemicals should be stored separately.  Appropriate labels should be securely attached on each chemical waste container indicating the corresponding chemical characteristics of the waste, such as explosive, flammable, oxidizing, irritant, toxic, harmful, corrosive, etc. 

The Contractor shall use a licensed collector to transport and dispose of the chemical wastes, either to the approved Chemical Waste Treatment Centre, or another licensed facility, in accordance with the Waste Disposal (Chemical Waste) (General) Regulation

 

To minimize environmental impacts during the handling, transportation and disposal of chemical refuse

Contractor

Works area

Construction phase

Waste Disposal (Chemical Waste) (General) Regulation

E

 

Land Contamination

 

 

 

 

 

S 7.40 -  S 7.42

S 7.44

S 7.49

 

S6.4-6.5

The excavated soil contaminated with TPH should be disposal of at landfill following the recommendation in the RAP.

A further study, Toxicity Characteristic Leaching Procedure (TCLP) testing, should be conducted to determine the leachability (hence the toxic risk) of the soil with elevated level of metals following the recommendation in the RAP.

As a conservative approach, treatment by cement solidification/ stabilisation should be conducted following the procedure in the RAP.

 

To clean up any identified contaminated land where the ground will be disturbed by the proposed works.

Exiting site user at Citybus Depot (CBD) /Project Proponent

 

CBD Site

Prior to the commencement of site clearance and construction works

 

Guidance Notes for Investigation and Remediation of Contaminated Sites of Petrol Filling Stations, Boatyards, and Car Repair/Dismantling Workshops” published by EPD, HKSAR

EPD ProPECC Note No. 3/94

Universal Treatment Standard by USEPA for TCLP Test

Remediation Action Plan attached in the EIA.

S 7.25 -  S 7.26

S7.57, S7.72, S7.75

 

S6.6-6.8

A Contamination Assessment Plan (CAP) detailing the sampling location and the sampling & testing schedule should be submitted for EPD’s approval.  

Site investigation works should be carried out at Hong Kong School of Motoring (HKSM) site in accordance with the CAP.

A Contamination Assessment Report (CAR) should be compiled after completing the SI works following the requirements in the CAP. 

The CAR should compare the findings with relevant standards and provide interpretation of the laboratory analysis.

If land contamination is confirmed, a Remediation Action Plan (RAP) should be drawn up to formulate necessary remedial measures. The subsequent CAR and RAP should be endorsed by EPD before implementation of any remedial works.

If the soil is contaminated with heavy metals or organic contaminants, the recommendation for handling such contaminated soil in the EIA should be followed. i.e. by biopiling (if TPH exceedance found in the SI) and/or cement solidification/stabilisation (if heavy metals exceedance found in the SI).

Remediation treatment could be carried out at either Tai Shue Wan or the open space 100m away from the existing Nam Long Shan Road rest garden sites, or at both sites in an unlikely event that large volume of contaminated soil is identified.

In the case that the heavy metal contaminated soil volume is small, treatment by CS/S could be conducted in the HKSM site.

The soil treated by biopiling or CS/S should be finally re-used on-site as backfill materials.

 

To clean up any identified contaminated land where the ground will be disturbed by the proposed works.

HKSM Site: Existing site user or other responsible parties (under Scenario A)

N.B. Details of the Scenario descriptions are referred to EIA Sections 7.24 – 7.25 & 7.61 -7.66.

HKSM Site

 

Prior to the commencement of site clearance and construction works (under Scenario A).

 

Guidance Notes for Investigation and Remediation of Contaminated Sites of Petrol Filling Stations, Boatyards, and Car Repair/Dismantling Workshops” published by EPD, HKSAR

EPD ProPECC Note No. 3/94

Dutch “B” standard for soil remediation

 

S7.62 to S7.64.

S6.9-6.10

The whole HKSM site would initially be fenced off and the suspected contaminated area would be fully demarcated and isolated.

Site investigation (SI) works would be carried out at the HKSM site in accordance with the CAP.

Once the SI results are available, the potential contaminated area could be identified and the fenced-off area could be adjusted to isolate only the area of contamination. No work would be undertaken within the fenced off area.

The design of the new entry plaza and access road would be modified so as to accommodate this fenced off area in its layout and to limit access to, as well as circulation around it.

 

 

To identify and isolate the potentially contaminated area to ensure there would be no risk to the general public

 

Project Proponent (under Scenario B)

N.B. Details of the Scenario descriptions are referred to EIA Sections 7.24 – 7.25 & 7.61 -7.66.

Hong Kong School of Motoring

Prior to the commencement of site clearance and construction works (under Scenario B).

Guidance Notes for Investigation and Remediation of Contaminated Sites of Petrol Filling Stations, Boatyards, and Car Repair/Dismantling Workshops” published by EPD, HKSAR

EPD ProPECC Note No. 3/94

S 7.76

S6.11

Mitigation measures for handling of the contaminated materials:

·     Construction workers' potential contact with contaminated materials should be minimised by using bulk earth-moving excavator equipment;

·     Exposure to any contaminated materials should be minimised by wearing appropriate clothing and personal protective equipment such as gloves and masks (when interacting directly with suspected contaminated material), providing adequate hygiene and washing facilities and preventing smoking and eating during such activities;

·     Stockpiling of contaminated excavated materials on site should be avoided as far as possible;

·     The use of contaminated soil for landscaping should be prohibited unless there is proper treatment of soil;

·     Vehicles containing any excavated materials should be suitably covered to limit potential dust emissions or contaminated wastewater run-off, and truck bodies and tailgates should be sealed to prevent any discharge during transport or during wet conditions;

·     Only licensed waste haulers should be used to collect and transport any contaminated material to an appropriate disposal site and procedures should be developed to ensure that illegal disposal of waste does not occur;

·     Speed control for the trucks carrying contaminated materials should be enforced.

·     The necessary waste disposal permits should be obtained, as required, from the appropriate authorities, in accordance with the Waste Disposal Ordinance (Cap 354), Waste Disposal (Chemical Waste) (General) Regulation (Cap 35), as required;

·     Records of the quantities of wastes generated and disposed of should be maintained; and

·     In accordance with good construction practice, silt traps should be used to reduce the impact to drainage caused by suspended solids arising from disturbed ground, or any construction materials such as cement and gravel. Wastewater, surface runoff or extracted groundwater should be disposed of in accordance with the WPCO.

To minimise the potentially adverse effects on the health and safety of construction workers and the impacts arising from the disposal of potentially contaminated materials.

The Contractor

Within the HKSM/CBD Sites/Remediation Site

During the site investigation and excavation of contaminated soil (if any).

Waste Disposal Ordinance

Waste Disposal (Chemical Waste) (General) Regulation

Water Pollution Control Ordinance

S 7.78

S6.12

If biopiling and cement solidification/stabilisation processes are carried out, the following mitigation measures shall be implemented:

Air Quality Impact

 

§           Biopile should be covered by tarpaulin or low permeable sheet to avoid dust emission;

§           Vented air from biopile should be connected to blower and carbon adsorption system for treatment before release to the atmosphere. Exhaust air from the blower and carbon adsorption system should be monitored regularly

§           The materials which may generate airborne dust emissions e.g. untreated contaminated soil  should be adequately wetted prior to and during the loading, unloading and handling operations

 

Noise Impact

 

§         Silencers should be installed at biopile blower to minimise noise impact;

§         Quiet plant shall be used for biopile treatment such as generator, blower, etc.

 

Water Quality Impact

 

§         Impermeable liners should be placed at the bottom of biopile and leachate collection sump should be constructed along the perimeter of biopile to minimise contaminated run-off.  The leachate should be recycled back to the biopile or trucked away to Chemical Wastes Treatment Centre for disposal;

§         Mixing of contaminated soils and cement/water/other additive(s) should be undertaken at a solidification plant to minimise the potential for leaching;

§         Run-off from the solidification/stabilisation area should be prevented by constructing a concrete bund along the perimeter;

 

Waste Management

 

§         The loading, unloading, handling, transfer and storage of cement should be carried out in an enclosed system;

§         The contaminated soils should be transported by roll-off trucks (containerisation).  This provides the most effective way to control the handling of contaminated soil and minimise the chance of spillage/ leakage during transportation.

§         Mixing process and other associated material handling activities should be properly scheduled to minimise potential noise impact.

 

Visual Impact

 

§         Temporary hoarding should be provided around the treatment area in order to minimize the visual impact.

 

To reduce the potentially adverse effects on the health and safety of construction workers and the environment during remediation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Contractor

Remediation site

During soil treatment

Waste Disposal Ordinance

Waste Disposal (Chemical Waste) (General) Regulation

Water Pollution Control Ordinance

Air Pollution Control(Construction Dust) Regulation

Noise Control Ordinance

Occupational Safety & Health Ordinance; Guidelines on Occupational Exposure


 

EIA Ref.

EM&A Ref.

Recommended Mitigation Measures

Objectives of the Recommended Measure & Main Concern to Address

Who to implement the measure?

Location of the measure

When to implement the measure?

What requirements or standards for the measure to achieve?

F

 

Air Quality Impact

 

 

 

 

 

S8.42

S7.23

Mitigation measures stipulated in the Air Pollution Control (Construction Dust) Regulation and good site practices including but not limited to the following shall be implemented:

§    Use of regular watering, with complete coverage, to reduce dust emissions from exposed site surfaces and unpaved roads, particularly during dry weather.

§    Use of frequent watering for particularly dusty construction areas, temporary stockpiles and areas close to ASRs.

§    Side enclosure and covering of any aggregate or dusty material storage piles to reduce emissions.  Where this is not practicable owing to frequent usage, watering shall be applied to aggregate fines.

§    Open stockpiles shall be avoided or covered.  Where possible, prevent placing dusty material storage piles near ASRs.

§    Restricting heights from which materials are dropped, as far as practicable to minimise the fugitive dust arising from unloading/ loading.

§    Tarpaulin covering of all dusty vehicle loads transported to, from and between site locations.

§    Use of vehicle wheel and body washing facilities at the exit points of the site.

§    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.

§    Imposition of speed controls for vehicles on unpaved site roads.  Ten kilometers per hour is the recommended limit.

§    Dusty activities should be re-scheduled if high-wind conditions are encountered.

§    Where possible, routing of vehicles and positioning of construction plant should be at the maximum possible distance from ASRs.

§    Implementation 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.

To ensure compliance with the guideline level and AQO.

The Contractor

Construction Site

Construction phase

EIAO-TM

APCO

S8.43

S7.24

Drilling & blasting activities:

§         Watering on the exposed area after blasting

§         Use of vacuum extraction drilling methods

§         Carefully sequenced blasting

§         Firing of explosive shall be carried out in the morning prior to opening of the Park.

To reduce the emissions from drilling & blasting activities

The Contractor

Construction Site

Construction phase

EIAO-TM

S8.44

S7.25

Temporary crusher:

§         Water sprays on the crusher.

§         Fabric filters installed for the crushing plant.

§         When transferring materials from crusher to the conveyors, chutes or dust curtains would be used for controlling dust.

To reduce dust emission from crusher plant

The Contractor

Construction Site

Construction phase

EIAO-TM

S.8.45

S7.26

Barging point and conveyor belt system:

§         The conveyors would be placed within a totally enclosed structure (see Figure 3.5 and 3.6).

§         Profiled steel cladding would be provided at two sides of loading point.

§         Dust suppression sprays would be installed and operated in strategic locations at the feeding inlet and outlet.

§         The transfer points would be placed within a totally enclosed structure, e.g. enclosed chute.  All transfer points to and from conveyors would be enclosed.  Flexible curtain shall be hung on the enclosed chute to prevent dust emission when excavated materials/ rocks are loaded into the barge.

 

To reduce the dust emissions from barging point and conveyor belt system

The Contractor

Construction Site

Construction phase

EIAO-TM

S8.46

S7.27

Suitable buffer zone from major construction activity shall be provided as far as possible.

The works areas shall be fenced off with hoarding.  The height of hoarding should not be less than 2.4 m from ground level

To prevent construction dust impacts affecting the visitors in the Park

The Contractor

Construction Sites

Construction phase

EIAO-TM

G

 

Water Quality Impact

 

 

 

 

 

S9.44

S8.3

Construction Site Run-off and Drainage:

·     Before commencing any site formation work, all sewer and drainage connections should be sealed to prevent debris, soil, sand etc. from entering public sewers/drains.

·     Temporary ditches should be provided to facilitate run-off discharge into appropriate watercourses, via appropriately sized/ designed silt retention pond or similar structure.  No site run-off should enter artificial ponds.  Cut-off ditches should be provided for all major site clearance/ excavation works where soils would be exposed so that instances of uncontrolled run-off from exposed areas would be minimized.  As well as channels, earth/ concrete bunds and/ or sand bags, as appropriate, should be deployed to direct surface run-off towards channels.  Catchpits and perimeter channels should be constructed in advance of relevant site formation works.

·     Boundaries of earthworks should be marked and surrounded by dykes or embankments for flood protection, as necessary. 

·     Sand/silt removal facilities such as sand/silt traps and sediment basins should 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 and maintained to ensure proper and efficient operation at all times and particularly during rainstorms. 

·     Silt removal facilities, channels and manholes should be maintained and the deposited silt and grit should be regularly removed, at the onset of and after each rainstorm to ensure that these facilities are functioning properly at all times.

·     exposed soil surfaces should be covered,

·     Water pumped out from foundation excavations should be discharged into silt removal facilities.

·     If excavation cannot be avoided during rainy seasons, temporarily exposed slope/soil surfaces should be covered by a tarpaulin or other means, as far as practicable, and temporary access roads should be protected by crushed stone or gravel, as excavation proceeds. Interceptiong channels should be provided (e.g. along the crest/ edge of the excavation) to prevent storm runoff from washing across exposed soil surfaces.  Arrangements should always be inplace to ensure that adequate surface protection measures can be safely carried out well before the arrival of a rainstorm..  Other measures that need to be implemented before, during and after rainstorms are summarized in ProPECC PN 1/94.

·     Exposed soil areas should be minimized to reduce potential for increased siltation and contamination of runoff.

·     Earthwork final surfaces should be well compacted and subsequent permanent work or surface protection should be immediately performed.  Appropriate intercepting channels should be provided where necessary.  Rainwater pumped out from trenches or excavations should be directed to silt removal facilities before discharge.

·     Open stockpiles of construction materials or construction wastes on-site of more than 50m3 should be covered with tarpaulin or similar fabric during rainstorms

 

To minimize water quality impacts

Contractor

Works area

Construction phase

ProPECC PN 1/94 Construction Site Drainage

 

 

 

 

 

 

 

Technical Memorandum standard under the Water Pollution Control Ordinance

 

 

 

 

 

 

 

 

 

9.45

8.4

·     Locate the construction phase discharge point at the outlet of the existing 1000 mm diameter storm water pipe at Tai Shue Wan (see Figure 5.3).

·     Sand/ silt removal facilities with enhanced performance shall be employed for treatment of runoff from the major excavation at the Summit.  The performance of these facilities would be enhanced with the use of flocculants to improve the coagulation and sedimentation process for the treatment of wastewater.

·     To minimize the water quality impact during rainy seasons, a silt curtain system shall be used to enclose the construction phase discharge point at Tai Shue Wan.

·     The contractor shall set out and agree with EPD the specific measures, and any additional measures, in a site run-off management plan, before commencement of construction activities during the wet season.

 

To minimize water quality impacts

Contractor

Tai Shue Wan near the existing Middle  Kingdom

Major excavation areas at the Summit

 

 

 

At the proposed construction phase discharge point at Tai Shue Wan

Not applicable

Construction phase

Technical Memorandum standard under the Water Pollution Control Ordinance

 

S9.45-S9.46

S8.3

General Construction Activities:

·     Debris and refuse generated on-site should be collected, handled and disposed of properly to avoid entering any nearby water bodies and public drainage system.  Stockpiles of cement and other construction materials should be kept covered when not being used.

·     Oils and fuels should only be used and stored in designated areas which have pollution prevention facilities.  To prevent spillage of fuels and solvents to nearby water bodies and public drains, all fuel tanks and storage areas should 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.

To minimize water quality impacts

Contractor

Works area

Construction phase

 

S9.47

 

Sewage from Construction Workforce:

·     Temporary sanitary facilities, such as portable chemical toilets, should be employed on-site where necessary to handle sewage from the workforce.  A licensed contractor would be responsible for appropriate disposal of waste matter and maintenance of these facilities.

 

To minimize water quality impacts

Contractor

Works area

Construction phase

Water Pollution Control Ordinance

9.48

S8.4

§     Ozone should be the primary disinfectant used in the marine life pools and aquariums.  Chlorine should only be used as a back-up.  When chlorine is used in pool water subject to discharge direct to sea, the discharge shall be less than 6,000 m3/ day and the total residual chlorine level in the effluent shall be monitored to ensure the concentration is maintained at less than 1 mg/L

§     Mechanical cleaning of pools shall be used to reduce the need to drain the pools for manual cleaning

§     Filter backwash water shall be discharged only to foul sewer after passing through an effluent holding tank.

§     Sludge accumulating in effluent holding tanks shall be pumped out and removed from site by a licensed contractor

§     Discharges to public sewer or to the sea shall comply with the requirements of the relevant effluent discharge license

§     There shall be no discharge of sewage or cooling water to sea

To reduce potential operational phase water quality impact

Ocean Park

Whole site

Operational phase

Water Pollution Control Ordinance

9.49

S8.5

Control of non-point source discharges:

§     Where possible, surface run-off shall be collected into artificial ponds at the Park, to be re-used for irrigation water on landscaped areas

§     Potentially toxic chemicals including pesticides should not be applied during heavy rainfall, or if heavy rainfall were to be forecast imminently

§     Surface run-off shall not be discharged direct to sea but shall pass through trenches or catch pits containing loose soil or other porous media to act as a delay to the “first-flush” run-off and to provide a certain amount of additional adsorption capacity

§     Environmental friendly fertilisers and pesticides should be selected where available in the market, either consisting of natural products and/ or having a rapid degradation half life of three days or less

§     chemicals should be selected that have a low toxicity to non-target animals

 

To reduce potential water quality impact

Ocean Park

Whole site

Operational phase

Water Pollution Control Ordinance

H

 

Sewerage and Sewage Implications

 

 

 

 

 

S10.43, S10.44-S10.45 S10.46 S10.52

S9.3-9.4

Upgrading of the sewers is proposed for the redevelopment project.

To reduce impact to the existing sewer

Government

Relevant sections of the existing sewers (outside Ocean Park boundary)

Design and Construction phase

DSD Sewerage Manual

I

 

Cultural Heritage Impact

 

 

 

 

 

S 11.54

S10.3

Conduct archaeological investigation at the HKSM and Citybus Depot sites.

Identifying of presence or absence of archaeological deposits

Qualified archaeologist

Hong Kong school of Motoring and  Citybus Depot

Prior to construction phase 

AMO

S11.106

S10.4

Removing of pavement and artificial layers in areas identified for Archaeological Investigation

Facilitating archaeological investigation

Contractor

Identified areas of archaeological investigation at Hong Kong school of motoring and bus depot

Prior to archaeological investigation

AMO

S11.106

S10.4

Fence off any test pits for archaeological investigation

Ensuring public safety through fencing of the site.

contractor

Identified areas of archaeological investigation at Hong Kong school of motoring and bus depot

During Archaeological investigation

AMO

S11.10311.108

S10.5

If any works are planned within one metre of the grave, a one metre buffer zone should be provided around the grave, demarcated by a temporary fence.

 

Protect the grave from damage during construction works

Contractor

Lowland of Ocean Park

 

Construction phase

EIAO-TM

J

 

Hazard to Life

 

 

 

 

 

12.15

S11.3

The blasting activities shall be inspected and audited at practical intervals to ensure that the assumptions and recommendations from the Quantitative Risk Assessment (QRA) study and the safeguards and recommendations from the systematic hazard identification are consistently implemented in accordance with the intent of the hazard to life assessment.

To ensure risk would be within acceptable levels

Ocean Park / Contractor

Works area

Construction phase

EIAO-TM