13                IMPLEMENTATION SCHEDULE OF THE PROPOSED MITIGATION MEASURESIMPLEMENTATION SCHEDULE OF THE PROPOSED MITIGATION MEASURES

Table 13.13.1       Implementation Schedule for Construction Dust Control

EIA Ref #

Environmental Protection Measures / Mitigation Measures

Location / Timing

Implementation Agent

Implementation Stages*Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

S3.8.4

Sai Kung River

 

·          Twice daily watering of the work site with active operations (material handling and haul roads) when the weather and the work site are dry. 

 

Ho Chung Channel and Pak Kong River

 

·          Twice daily watering of the work site with active operations (material handling) when the weather and the work site are dry.

 

·          Extensive watering of the haul roads (at least every two hours daily) to keep the haul roads in wet condition.

 

 

Work site/ During construction period

Contractor

 

Ö

 

Air Pollution Control (Construction Dust) Regulation

S3.8.6

Dust mitigation measures stipulated in the Air Pollution Control (Construction Dust) Regulation shall be incorporated to control dust emission.  Notice shall be given to the authority prior to commencement of works.

 

Work site/ During construction period

Contractor

 

Ö

 

Air Pollution Control (Construction Dust) Regulation

S3.8.7

The speed of haul road traffic should be limited to 10 kph..

Work site/ During construction period

Contractor

 

Ö

 

Air Pollution Control (Construction Dust) Regulation

S3.8.8

To minimise odour nuisance at nearby ASRs, the following odour control measures are recommended:

 

 

·          any odorous dredged material should be placed remote from air sensitive receivers;

·          any odorous permitted stockpiled material should be removed within two days of work to reduce the amount of time available for decomposition; and

·          any odorous permitted stockpiled material should be covered with plastic tarpaulin sheets..

 

Work site/ During construction period

Contractor

 

Ö

 

Air Pollution Control (Construction Dust) Regulation

# All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and / or accepted public comment to the proposed project.

* Des - Design, C - Construction, and O – Operation, and Dec - Decommissioning

 


Table 113.3.2       Implementation Schedule for Construction Noise Control

EIA Ref #

Environmental Protection Measures / Mitigation Measures

Location / Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

S 4.8.1-S4.8.3

Use of quiet PME

Work site / During the construction period

Contractor

 

Ö

 

ProPECC PN2/93 and Noise Control Ordinance

S 4.8.4-S4.8.10

Use of movable noise barriers and temporary noise barrier

Work site / During the construction period

Contractor

 

Ö

 

ProPECC PN2/93 and Noise Control Ordinance

S 4.8.11

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 utilised 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; and

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

Work site / During the construction period

Contractor

 

Ö

 

ProPECC PN2/93 and Noise Control Ordinance

S4.10.1

Environmental Monitoring and Audit (EM&A) programme is recommended to be implemented during the construction stage.

Work site / During the construction period

Contractor

 

Ö

 

-

# All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and / or accepted public comment to the proposed project.

* Des - Design, C - Construction and, O – Operationn, and Dec - Decommissioning
Table 13.13.3       Implementation Schedule for Water Quality Control

EIA Ref #

Environmental Protection Measures / Mitigation Measures

Location / Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

S5.8.2 –S5.8.3

Channel Excavation Works

·          The excavation works for the earth channel construction would be carried out along sections of the three streams. Wet excavation should be reduced as much as possible. Due to the characteristics of narrow width and small water flow of the original channel, theE excavation to can be carried out in dry condition (even in wet season) by diverting the stream flow from upstream by a temporary drainage channel or narrowing the river/stream with a temporary earth bund or barrier. This could effectively isolate the excavating section from the stream water.   Containment measures such as bunds and barriers should be used within the river/stream to prevent water from entering the excavation area. The temporary drainage channel would be backfilled when the construction works are completed or the temporary diversion is no longer required.  Although flooding of the proposed contaminant section seldom occurs during the dry season, the excavation would consider to temporarily stop when flood water enter the containment causing leakage of runoffs to stream water.

·          To further minimise the leakage and loss of sediments during excavation, tTightly sealed closed grab excavators should be employed in river sections where material to be handled is wet. Where material is dry and in non-river sections, conventional excavations can be used.

 

Work site / During the construction period

Contractor

 

Ö

 

-

S5.8.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Construction Runoff 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 a silt retention pond.

·             

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

·          Sand/silt removal facilities such as sand traps, 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 WPCO. 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.

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

·          Careful programming of the works to minimise surface excavations for the drainage improvement works during the wet season.  If excavation of soil cannot be avoided during the wet season, exposed slope surfaces should be covered by a tarpaulin or other means. Other measures that need to be implemented before, during, and after rainstorms are summarised in ProPECC PN 1/94.

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

·          Earthwork final surfaces should be well compacted and subsequent permanent work should be immediately performed.

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

Open stockpiles of construction materials or construction wastes on-site should be covered with tarpaulin or similar fabric during rainstorms.

 

Work site / During the construction period

Contractor

 

Ö

 

ProPECC PN 1/94; WPCO

 

S5.8.6-S5.8.7

 

 

 

 

 

General Construction Activities

·          Debris and refuse generated on-site should be collected, handled and disposed of properly to avoid entering the adjacent watercourses. 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 the river/streams, 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.

·           

 

Work site / During the construction period

Contractor

 

Ö

 

ProPECC PN 1/94; WPCO

S5.8.8

 

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 and maintenance of these facilities.

 

Work site / During the construction period

Contractor

 

Ö

 

WPCO

 

 

S5.8.10-

S5.8.12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Accidental Spillage of Chemicals on Site

 

 

·           

·          In case of the occurrence of accidental spillage of chemicals, it is required to take immediate actions to control the release of chemicals into the nearby water bodies. It is recommended that the contractor of the project should develop an emergency plan to deal with accidental spillage of chemicals in the construction site.

·          Good site practices would avoid the accidents to occur. Areas for chemical storage should be securely locked and kept as far from the drainage systems or stream courses as possible. The storage area should have an impermeable floor and bunding of capacity to accommodate 110% of the volume of the largest container or 20% by volume of the chemical waste stored in that area, whichever is the greatest, to minimise the impacts from any potential accidents.

·          Disposal of chemical wastes should be carried out in compliance with the Waste Disposal Ordinance. The Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes published under the Waste Disposal Ordinance details the requirements to deal with chemical wastes. General requirements are given as follows:

 

o         Suitable containers should be used to hold the chemical wastes to avoid leakage or spillage during storage, handling and transport;

o         Chemical waster containers should be suitably labelled to notify and warn the personnel who are handling the wastes to avoid accidents;

o         Storage area should be selected at a safe location on site and adequate space should be allocated to the storage area.


 

 

Work site / During the construction period

 

 

 

 

 

 

 

 

Ö

 

 

 

 

 

 

 

 

 

 

 

 

-WPCO

S5.10.1

·          Water quality monitoring requirements and regular audit during construction phase should be carried out.

Drainage channel / During the operation period

Contractor

 

Ö

 

-

# All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and/or accepted public comment to the proposed project.

* Des - Design, C - Construction and, O – Operationn, and Dec - Decommissioning

Table 13.13.4       Implementation Schedule for Waste Management Implications

EIA Ref #

Environmental Protection Measures/Mitigation Measures

Location/ Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

S6.5.2 – S6.5.3

Good Site Practices and Waste Reduction Measures

 

Good site practices during the construction activities include:

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

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

·         Provision of sufficient waste disposal points and regular collection for disposal.

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

·         Separation of chemical wastes for special handling and appropriate treatment at the Chemical Waste Treatment Facility. 

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

·         A recording system for the amount of wastes generated, recycled and disposed (including the disposal sites) shall be proposed.

·         A Waste Management Plan shall be prepared and submitted to the Engineer for approval. One may make reference to ETWB TCW No. 15/2003 for details.

·         In order to monitor the disposal of C&D materials at landfills and public filling areas, and to control fly tipping, a trip-ticket system shall be included as one of the contractual requirements. One may make reference to ETWB TCW No. 321/20042 for details..

 

 

 

Work site / During the construction period

Contractor

 

Ö

 

Waste Disposal Ordinance (Cap.54),

WBTC No.21/2002, ETWB TCW No. 15/2003, ETWB TCW No. 31/2004

S6.5.9S6.5.11

Excavated Riverbed Material

Use of water-tight trucks for the transportation of excavated riverbed material to the designated barging point for disposal at the designated public filling area, or transported directly to the public filling area.  General Refuse

General refuse shall be stored in enclosed bins or compaction units separate from C&D material.  A reputable waste collector shall be employed by the contractor to remove general refuse from the site, separately from C&D material.  An enclosed and covered area is preferred to reduce the occurrence of 'wind blown' light material.

Work site / During the construction period Work site / During the construction period

Contractor Contractor

 

ÖÖ

 

WDOPublic Health and Municipal Services Ordinance (Cap. 132)

S6.5.11

General Refuse

General refuse shall be stored in enclosed bins or compaction units separate from C&D material.  A reputable waste collector shall be employed by the contractor to remove general refuse from the site, separately from C&D material.  An enclosed and covered area is preferred to reduce the occurrence of 'wind blown' light material.

Work site / During the construction period

Contractor

 

Ö

 

Public Health and Municipal Services Ordinance (Cap. 132)

S6.5.10

Chemical Waste

If chemical wastes are produced at the construction site, the Contractor shall register with the EPD as a Chemical Waste Producer and 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 shall be used, and incompatible chemicals shall be stored separately.  Appropriate labels shall be securely attached on each chemical waste container indicating the corresponding chemical characteristics of the chemical waste, such as explosives, flammable, oxidizing, irritant, toxic, harmful, corrosive, etc.  The Contractor shall use a licensed collector to transport and dispose of the chemical wastes generated at the Chemical Waste Treatment Centre at Tsing Yi, or other licencedlicensed facility, in accordance with the Waste Disposal (Chemical Waste) (General) Regulation.

Work site / During the construction period

Contractor

 

Ö

 

Waste Disposal (Chemical Waste) (General) Regulation

# All recommendations and requirements resulted during the course of EIA Process, including ACE and / or accepted public comment to the proposed project.

·          Des - Design, C - Construction, and O - Operation and Dec – Decommissioning

 


Table 13.13.5       Implementation Schedule for Land Contamination

EIA Ref #

Environmental Protection Measures / Mitigation Measures

Location / Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

S.7.7.2 –

S.7.7.3

Land Contamination Assessment

Due to the possibility of land-use changes and variable future site conditions caused by different factors such as weather and business operation,A a full site inspection is required by the future Environmental Team  immediately after the site was resumed should be undertaken to review the validity of the preliminary CAP and define the exact sampling locations and sampling parameters for further site investigation. The inspection should be undertaken immediately after the site was resumed for this project.

 

An updated CAP shall then be prepared after the site inspection in accordance with EPD’s “Guidance Notes for Investigation and Remediation of Contaminated Sites of Petrol Filling Stations, Boatyards, and Car Repair/Dismantling Workshops” and submitted to EPD for approvalendorsed by EPD  prior to commencement of the site investigation.

Upon receipt of EPD’s approval on the updated CAP, the actual site investigation for land contamination impact assessment shall be conducted according to the approved CAPly before any construction work started at the identified contaminated sites. Soil and groundwater samples shall be collected and tested as described in the approved CAP to provide site-specific information for the assessment. 

A Contamination Assessment Report (CAR) shall be compiled to document the findings and shall include interpretation of laboratory testing results in accordance with the ProPECC Note No. 3/94 and comparison of the findings with relevant standards, such as the Dutch guidelines or other international practices as appropriate.

 

 

If land contamination is confirmed, a Remediation Action Plan (RAP) shall be drawn up to formulate necessary remedial measures and potential water quality impact to the river shall be also addressed if necessary in the remediation measures. The subsequent CAR and RAP shall be endorsed by EPD before implementation of any remedial technology.

The contaminated sites should be remediated before commencement of any construction work at the concerned sites which may disturb the ground. The duration of remediation should be taken into account by the Project Proponent or the Contractor as part of the construction programme.

 

Identified areas which require specific contamination investigation /After land resumption and during construction period

Contractor

 

Ö

 

ProPECC PN3/94 and Guidance Notes for Investigation and Remediation of Contaminated Sites of: Petrol Filling Stations, Boatyards, and Car Repair / Dismantling Workshops. 

 

S.7.9.1

Mitigation Measures during Construction Stage

Mitigation measures for handling of the the identified areas contaminated materials are recommended 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. These measures include:

 

·          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;

 

·          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.

 

Contaminated sites identified in the CAR / During construction period

Contractor

 

Ö

 

Waste Disposal Ordinance, Waste Disposal (Chemical Waste) (General) Regulation.

# All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and / or accepted public comment to the proposed project.

* Des - Design, C - Construction and, O – Operation, and Dec - Decommissioning


Table 13.13.6       Implementation Schedule for Ecological Requirements

 

EIA Ref #

Environmental Protection Measures / Mitigation Measures

Location / Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

S8.7.2 &

S8.7.5 S8.7.1-S8.7.5 & S8.8.13

·         For the Sai Kung River, the base of the improved channel should be lined with natural substrates (e.g., gravel, cobbles and boulders). Substrates found in the existing river section should be used to line the new channel. Substrates lining the improved channel should be arranged to re-create the existing riffle-pool sequence found in the river. Pits would be provided in the gabion to allow planting of herbaceous riparian vegetation.

 

·         For the Ho Chung River, newly widened sections of riverbed should be lined with natural substrates (e.g., cobbles and boulders), with the size and arrangement of these substrates selected to complement adjacent areas of the existing riverbed. The substrates should be sourced as far as practicable from materials excavated during the river widening. Pits should be provided in the gabion to allow planting of herbaceous riparian vegetation.

·For the Sai Kung River, the base of the improved channel should be lined with natural substrates (e.g., gravel, cobbles and boulders). To re-create existing conditions as closely as possible, substrates found in the existing river section should be used to line the new channel. Substrates lining the improved channel should be arranged to re-create the existing riffle-pool sequence found in the river. The banks of the improved channel should be lined with rock-filled gabion to improve stability. Pits would be provided in the gabion to allow planting of herbaceous riparian vegetation.

 

·For the Ho Chung River, newly widened sections of riverbed should be lined with natural substrates (e.g., cobbles and boulders), with the size and arrangement of these substrates selected to complement adjacent areas of the existing riverbed. The substrates should be sourced as far as practicable from materials excavated during the river widening. The majority of the southern bank of the widened channel should be lined with rock-filled gabion. Pits should be provided in the gabion to allow planting of herbaceous riparian vegetation.

 

Work site / During planning & design stage, and construction stageWork site / During planning & design stage, and construction stage

ContractorContractor

ÖÖ

ÖÖ

 

-

-

 

S8.7.10 & S8.8.5S8.8.5

·         At the Sai Kung and Ho Chung Rivers the following measures would be implemented:

 

·         Drainage improvement works would be limited to downstream sections of the existing rivers.

 

·         Within the proposed works areas, drainage improvement works would be conducted in sections (approximately 250m in length) along only one bank of the river at a time. Excavation works would be restricted to an enclosed dry section of the river, with containment measures such as bunds and barriers used within the river to minimise the impacts upon the downstream water body. Using this approach to construction works, only localised areas of the river would be subject to disturbance at any one time, and flow would be maintained within the rivers.

 

·         The excavation works for channels should be carried out in the dry condition, with construction carried out by land-based plant. Excavation works should be restricted to an enclosed dry section of the river, with containment measures such as bunds and barriers used within the river to minimise the impacts upon the downstream water body. Site runoff should be directed towards regularly cleaned and maintained silt traps and oil/grease separators to minimise the risk of sedimentation and pollution of river water. The silt and oil/grease separators should be appropriately designed for the local drainage and ground conditions. To minimise leakage and loss of sediments during excavation in narrow channels, tightly sealed closed grab excavators should be deployed where material to be handled is wet.

·The excavation works for channels should be carried out in the dry season, with construction carried out by land-based plant. Excavation works should be restricted to an enclosed dry section of the river, with containment measures such as bunds and barriers used within the river to minimise the impacts upon the downstream water body. Site runoff should be directed towards regularly cleaned and maintained silt traps and oil/grease separators to minimise the risk of sedimentation and pollution of river water. The silt and oil/grease separators should be appropriately designed for the local drainage and ground conditions. To minimise leakage and loss of sediments during excavation in narrow channels, tightly sealed closed grab excavators should be deployed where material to be handled is wet.

 

Work site/during construction phaseWork site/during construction phase

ContractorContractor

 

ÖÖ

 

-

-

 

S8.8.6

·         Noise mitigation measures including the use of quiet construction plant and temporary noise barriers (Section 4 of the EIA report refers) should be implemented to minimise disturbance to habitats adjacent to the works areas. In particular, measures such as noise barriers should be used to minimise disturbance to the bat roost identified close to the Pak Kong works area.

Pak Kong/during construction phase

Contractor

 

Ö

 

-

 

S8.8.7

·         Two small trees and six seedlings of the rare tree species Ehretia acuminata recorded on the southern bank of the existing Ho Chung River to be transplanted to another area within the Ho Chung site boundary before the commencement of construction phase activities. The exact location for transplantation would be confirmed during the design stage. Fencing would be erected around the transplanted trees/seedlings to minimise potential construction phase disturbance.

·The drainage improvement works would directly and unavoidably affect t approximately .It is therefore recommended that the trees and seedlings are

 

Ho Chung works site/before construction phase

Contractor

 

Ö

 

-

 

S8.8.9

·         Seeds from the existing Ehritia acuminata trees should be collected and propagated. The seeds should be collected from mature fruits (the fruiting period of E. acuminata is from May to September) prior to transplantation, and germinated in containers under suitable conditions. Following germination and growth, the seedlings should be planted at suitable locations within the Ho Chung Works Area (to be determined during the detailed design stage). The survival of newly planted seedlings should be monitored. Seed collection, propagation, planting and monitoring of E. acuminata should be undertaken by a suitably qualified botanist/horticulturalist appointed by the Project Proponent. A detailed methodology for these works should be formulated during the detailed design stage of the Project, in consultation with AFCD.

·Seeds from the existing Ehritia acuminata trees should be collected and propagated. The seeds should be collected from mature fruits (the fruiting period of E. acuminata is from May to September) prior to transplantation, and germinated in containers under suitable conditions. Following germination and growth, the seedlings should be planted at suitable locations within the Ho Chung Works Area (to be determined during the detailed design stage). The survival of newly planted seedlings should be monitored. Seed collection, propagation, planting and monitoring of E. acuminata should be undertaken by a suitably qualified botanist/horticulturalist appointed by the Project Proponent. A detailed methodology for these works should be formulated during the detailed design stage of the Project, in consultation with AFCD.

· 

 

 

Ho Chung works site/before construction phase

Contractor

 

Ö

 

-

 

S8.8.14

·         The improved Ho Chung River is expected to provide a suitable habitat for fish communities previously recorded from the river. To further increase the value of the River for fish communities, it is recommended thatS small  fish ladders are to be constructed over the weirs along the river channel. Existing weirs within the river currently impede the movement of fish between upstream and downstream sections of the river. The fish ladders would facilitate movement past these obstacles, extending the range of fish communities in both upstream and downstream areas. The detailed design of the ladders would be submitted to AFCD for comment and approval before finalisation.

 

Work site / During planning & design stage, and construction stage

Contractor

Ö

Ö

 

-

S8.8.15-

S8.8.16

·         Extensive planting of trees and other vegetation along the banks of the newly created channels would be implemented. These plantings would include:

 

·         Standard or heavy standard trees would be planted along the banks of newly created channels. Compensatory tree planting would be implemented on at least a 1:1 ratio. 

 

·         Further planting of woodland tree and shrub seedlings would be implemented within areas adjacent to the newly constructed channels.

 

·         Compensatory planting should make use of native plant species with flowers/fruits attractive to wildlife.

 

Works site/during construction phase

Contractor

 

Ö

 

-

 

S8.10.1

·         The proper implementation of ecological mitigation measures should be audited. Details are provided in the EM&A Manual.

Works site/during construction phase

Contractor/ET

Ö

Ö

 

-

S8.10.2-

S8.10.3

·         A specific monitoring programme of channels constructed to replace Sai Kung and Ho Chung Rivers is recommended. The programme should provide data on the re-establishment of aquatic/riparian communities in the channels, and allow an assessment of the relative success of mitigation measures to be made. Baseline data should be collected 2-3 months before the commencement of the construction phase, with monitoring conducted 3 times a year during the construction phase, and 3 times a year for 3 years after the completion of works. Data collected should include abiotic (e.g., water quality, sediment characteristics) and biotic (e.g., avifauna, macroinvertebrate and fish populations, aquatic, emergent and riparian vegetation) parameters. Reports on the findings of each monitoring trip should be submitted to AFCD for review/discussion. A final report summarising the results of monitoring over 3 years should be prepared to serve as a reference for future projects of this kind. Monitoring should be conducted by a suitably qualified ecologist(s) appointed by the Project Proponent

·          

·         AIf specific monitoring programme of channels constructed to replace Sai Kung and Ho Chung Rivers is recommended. Details are provided in the EM&A Manual.

the post-construction phase monitoring demonstrates that re-colonisation is unsuccessful the following contingency plan should be implemented

·         Contingency plan should be implemented if the post-construction phase monitoring demonstrates that re-colonisation is unsuccessful. Details are provided in the EM&A Manual.

 

-Baseline data collected prior to the construction phase should be compared with post-construction phase data. Any substantial differences in habitat characteristics (e.g., water quality, aquatic/emergent vegetation) should be noted.

 

-The potential cause of differences between pre- and post-construction phase habitat characteristics (e.g., changes in water depth, sediment characteristics) should be identified.

 

-Measures to further rehabilitate the habitat characteristics of river channels should be implemented (e.g., minor re-profiling of riverbed, planting of emergent/aquatic vegetation, increasing heterogeneity of substratum).

 

-Further monitoring of abiotic and biotic parameters should be conducted to determine the relative success of the contingency habitat rehabilitation measures.

 

Works site/before and during construction phase, operation phase

Contractor /Ecologist appointed by Project Proponent (DSD)

Ö

Ö

Ö

-

S8.10.4

·         Following transplantation of the two Ehretia acuminata trees and approximately six seedlings, and the planting of seedlings germinated from seeds collected from the two trees, Rregular monitoring of the trees and seedlings covering the 12-month period following transplantation and planting should be conducted to check on the health and condition of the plantsd. Monitoring should cover the 12-month period following transplantation and planting, and be conducted at least twice a month for the first four months after transplantation/planting, and once a month for the remaining eight months. Monitoring should be conducted by a suitably qualified botanist/horticulturalist appointed by the Project Proponent. Details are provided in the EM&A Manual.

 

Ho Chung works site/before and during construction phase

botanist/ horticulturalist appointed by the Project Proponent (DSD)

Ö

Ö

 

-

# All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and / or accepted public comment to the proposed project.

*Des - Design, C - Construction and , O –  Operation, and Dec – Decommissioning


Table 13.13.7       Implementation Schedule for Landscape and Visual Mitigation Measures

 

EIA Ref #

Environmental Protection Measures / Mitigation Measures

Location / Timing

Implementation/ Maintenance Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

Fig A9.12A

LMM 1 - Gabions with Pits to Plant Riparian Vegetation

·          During detailed design, there should be co-ordination between the designers to ensure that pits are allowed in gabions with sufficient soil for the planting of riparian vegetation. 

 

Works site/during construction phase

12 months establishment period: Contractor

Operation: DSD

 

Ö

Ö

DSD Particular Specification

WBTC 2/2004

Fig A9.12A

LMM 2 - Rip Rap and Riffles Treatment to Channel Base

·          The channel base should be covered in rip-rap which is considered to be more aesthetically appropriate than fair-faced concrete. Riffles with different water depths should be created incorporating aquatic plants.

 

Works site/during construction phase

12 months establishment period: Contractor

Operation: DSD

 

Ö

Ö

DSD Particular Specification

Fig A9.12A

LMM 3 - Surface Treatment of Flood Walls and Retaining Walls

·          At the design stage, there should be comprehensive planning by the designers to ensure that the appearance of flood walls incorporate aesthetic treatments which is considered to be aesthetically appropriate than fair-faced concrete.

 

Works site/before and during construction phase

12 months establishment period: Contractor

Operation: DSD

 

Ö

Ö

DSD Particular Specification

Fig A9.12B

LMM 4 – Compensatory Planting along Drainage Channel

·          At the detailed design stage, tree and shrub planting should be included by the designer using amenity species along footpath areas or woodland seedling tree and shrub on slopes.

 

Works site/during construction phase

12 months establishment period: Contractor

Operation: DSD

 

Ö

Ö

WBTC  14/2002

WBTC 2/2004

Fig A9.12B

LMM 5 - New Roadside Tree Planting along Access Roads

·          Allowance should be made for planting of heavy standard size trees in the ratio of one tree planted every tree felled.

Works site/during construction phase

12 months establishment period: Contractor

Operation: DSD

 

Ö

Ö

WBTC  14/2002

WBTC 2/2004

Fig A9.12B

LMM 6 - Grass Concrete Slabs

·          Grass concrete slabs should be used in maintenance access over covered culverts and access ramps to produce a more pronounced greening effect.

 

Works site/during construction phase

12 months establishment period: Contractor

Operation: DSD

 

Ö

Ö

DSD Particular Specification

# All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and / or accepted public comment to the proposed project.

* Des - Design, C – Construction and O – Operation

 

 

 


[Input will be provided as soon as possible]
Table 13.13.8       Implementation Schedule for Cultural Heritage

 

EIA Ref #

Environmental Protection Measures / Mitigation Measures

Location / Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

S10.10.1

The Contractor should report to the Engineer, DSD and the AMO immediately for any discovery of the Antiquities or supposed antiquities during the course of the construction works.

Work site /during construction phase

Contractor

 

Ö

 

Antiquities and Monuments Ordinance-

S10.10.2

Mitigation Measures during Construction Stage

 

·         Higher earth god shrine:

Protective measures should be provided for the shrine if works are taken place in close proximity. The protective measures should consist of the following:

 

(1)   High visibility fencing at a distance of one meter around the 

shrine; and

 

        (2) Heavy duty plastic sheeting to be placed over the exterior          surfaces of the shrine for duration of ongoing works.

 

 

·         A pedestrian access path to the shrine should be maintained through out the construction period. As the shrine is located within the works area, for purposes of public safety, the path should be marked with a temporary fence and the access route clearly marked by signage.

·         The Che Kung Temple, Ho Chung: Vehicle parking is currently available in an open lot directly to the northwest of the temple. If the works area infringes on the parking area, alternative parking facilities should be made available.  Clear signage for directions to the temple should be provided from Hiram’s Highway.

 

 

 

·         Mature Trees along the banks of all three rivers: The felling of mature trees should be avoided. If it is unavoidable, any trees that are removed from the area should be replaced by trees of the same species.

Specified Resources / during construction phase

Contractor

 

Ö

 

-

# All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and / or accepted public comment to the proposed project.

* Des - Design, C - Construction and , O – Operation, and Dec – Decommissioning


Table 13.13.9       Implementation Schedule for Other EIA Requirements

 

EIA Ref #

Environmental Protection Measures / Mitigation Measures

Location / Timing

Implementation Agent

Implementation Stages*

Relevant Legislation and Guidelines

Des

C

O

-

Environmental Monitoring and Audit (EM&A)

·         Site inspection shall be carried out regularly by the Environmental Team (ET) to inspect construction activities to ensure that the recommended environmental protection and pollution control mitigation measures are properly implemented. Details of the requirements and procedures in conducting site inspections are given in the EM&A Manual.

·         On the receipt of any complaints, the Environmental Team Leader (including co-operation s required from other parties) shall promptly undertake investigation work and the necessary actions carried out as based on the results of the investigation. Details of the recommended complaints handling procedures and actions are given in the EM&A Manual.

Work Site/

During construction period

Contractor and ET

 

Ö

 

-

# All recommendations and requirements resulted during the course of EIA/EA Process, including ACE and / or accepted public comment to the proposed project.

* Des - Design, C - Construction and, O – Operation, and Dec - Decommissioning


Table 13.1  Implementation Schedule for Construction Dust Control  13-1

Table 13.2  Implementation Schedule for Construction Noise Control  13-3

Table 13.3  Implementation Schedule for Water Quality Control  13-4

Table 13.4  Implementation Schedule for Waste Management Implications  13-8

Table 13.5  Implementation Schedule for Land Contamination  13-12

Table 13.6  Implementation Schedule for Ecological Requirements  13-16

Table 13.7  Implementation Schedule for Landscape and Visual  13-22

Table 13.8  Implementation Schedule for Cultural Heritage  13-23

Table 13.9  Implementation Schedule for Other EIA Requirements  13-25

 

13  IMPLEMENTATION SCHEDULE OF THE PROPOSED MITIGATION MEASURES  13-1